• 专利附录
  • 专利说明
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    • 专利摘要:
    The present invention relates to a removable housing for removable connection to a mist generating device containing a heat exchanger, said removable housing containing a power supply and a reservoir of mist generating liquid. The power source is mainly of a chemical nature, such as a battery or a pyrotechnic device. The invention also relates to mist generating devices containing such a removable housing and the use of such housings and devices to generate mist.
    公开号:BE1021433B1
    申请号:E2013/0681
    申请日:2013-10-11
    公开日:2015-11-19
    发明作者:Alfons Vandoninck
    申请人:Bandit N.V.；
    IPC主号:
    专利说明:

    Spray generating device and associated removable housing
    The present invention relates to a removable housing for removably connecting a mist-generating device consisting of a heat exchanger, wherein said removable housing comprises a power source and a reservoir of mist-generating fluid. The food source in particular is of a chemical nature, such as a battery or pyrotechnic agent. The invention also relates to side-generating devices consisting of such a removable housing and the use of such housings and devices for generating mist.
    BACKGROUND OF THE INVENTION
    Spray generating devices are used in various fields. They are used in entertainment to create a specific mood or to improve the visual light effects. During the training of emergency services and soldiers, these devices are used to simulate fire. In addition, they are used in security systems to disorient intruders and hide valuables from them. Normally, a mist-generating device creates mist by flowing a mist-generating substance over a heat exchanger, upon which the mist-generating substance is converted into the vapor phase emitted from the outlet [end] of the heat exchanger. Depending on the atmosphere in which this vapor is emitted, the vapor may condense upon expansion into small liquid droplets hanging in the air like an aerosol, forming a mist.
    The "ejection spray" used herein by a mist-generating device, which generally refers to the process in which a mist-generating substance (hereinafter also called the mist-generating fluid or the mist-generating material), is driven by a heat exchanger, with the conversion of said mist-generating substance in the vapor phase emitted from the outlet [end] of said heat exchanger.
    The power for the general operation of the fog-generating device and for heating the heat exchanger is supplied via the socket (for stationary devices) and / or via a battery (e.g. for portable devices, as described in GB2324636). In the case of fog-generating devices for security applications, in the case of an unintended or intended power failure, a spare battery can power the fog-generating device. In general, the backup battery is a lead battery, usually of 12 V DC.
    In addition to the above, the inventors have demonstrated that a pyrotechnic agent can act as a power source to feed spray generating fluid to the heat exchanger. Example: the pyrotechnic agent may comprise an inflammatory agent and a reagent. Upon the ignition of the reagent, gas is generated which carries the spray generating fluid to the heat exchanger. It has been found that a pyrotechnic agent as described herein provides a much faster generation of mist compared to previous devices. This is especially important for fog-generating devices used for security.
    A professional fog-generating device for security purposes often includes a removable housing that consists of a reservoir in which the fog-generating fluid is stored. This prevents the mist-generating fluid from having to be topped up on site after every mist generation. By using a removable housing, a user can simply replace an empty housing with a new one and send the empty housing to the supplier for refilling. In practice, the removable housing for the mist-generating fluid will have to be replaced every three years, even if it has not been used for mist generation.
    One of the biggest drawbacks of the current fog-generating devices is the spare battery. Normally this battery is present in the housing of the mist generating device. The temperature inside the housing is easily 10 ° C higher than the ambient temperature. Moreover, the device is often mounted on the ceiling, where the ambient temperature is often above 30 ° C. Consequently, the spare battery is frequently exposed to temperatures above 40 ° C. At this temperature, the corrosive effects of the acid on the battery plates ensure that the battery life is considerably shorter. Depending on the circumstances, the annual replacement of the battery is often necessary to ensure that the replacement battery can supply power to the mist-generating device in the event of a power failure in the circuit.
    As a result of the above-mentioned problems with the battery, the other power sources that can be used to feed the mist-generating liquid to the heat exchanger, in particular pyrotechnical means, will generally also be power sources that can be used once. After discharge, the mist-generating fluid was ejected from the reservoir to the heat exchanger and almost all of the feed from the power source was used.
    In addition to the costs associated with replacing the power source (s) by a skilled technician, either annually or every time the device has generated mist, these replacements are subject to various other complications. Example: The technician does not connect the power source properly because he has inserted the battery with an incorrect polarity or has forgotten to connect one of the poles of the power source, which could cause the device to fail. Other common problems include the technician arriving on site without a new or appropriate power source. Further complications are inherent to manipulations of security means, such as the deployment of emergency services, bypassing the tamper detection system, etc.
    It has been found that the fog generating device and the removable housing of the present invention provide a solution to the above problems. In particular, the removable housing makes easy maintenance of the device possible, because both the power source (s) and the mist-generating fluid can be exchanged simultaneously without any problems.
    SUMMARY OF THE INVENTION
    The present invention relates to a removable housing for removably connecting a mist-generating device consisting of a heat exchanger, wherein said removable housing comprises a power source and a reservoir of mist-generating fluid.
    In a specific embodiment, the present invention is directed to a mist-generating device consisting of a flow circuit, a heat exchanger, means for feeding a mist-generating fluid to said heat exchanger, and a removable housing consisting of a battery and mist-generating fluid. In addition, the present invention provides a removable housing for use in a fog-generating device consisting of a battery and a fog-generating fluid.
    In another embodiment, a removable housing according to the invention is provided, wherein said power supply is a pyrotechnic means, specifically for supplying the spray generating fluid from the reservoir to the heat exchanger.
    In a still further embodiment, a removable housing according to the invention is provided, wherein said removable housing consists of a power source for the general operation of the mist-generating device, a power source for feeding mist-generating fluid to the heat exchanger, and a reservoir of mist-generating fluid. This version consists of the power source for general operation (usually a battery) and the power source for the supply of mist-generating fluid (usually a pyrotechnic agent). Finally, in a further embodiment, the removable housing consists of a battery, a pyrotechnical means and a reservoir with spray-generating fluid.
    BRIEF SUMMARY OF THE DRAWINGS
    With specific reference to the illustrations, it is emphasized that the details shown are by way of example only and for the purposes of illustrative discussion of only the various embodiments of the present invention. They are shown to provide what is believed to be the most useful and easy description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show the structural details of the invention in more detail than is necessary for a fundamental understanding of the invention. The descriptions included with the drawings show those skilled in the art how the various forms of the invention can be embodied in practice.
    Fig. 1: Schematic drawing of a mist-generating device according to the present invention.
    Fig. 2: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    Fig. 3: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    Fig. 4: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    Fig. 5: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    Fig. 6: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    Fig. 7: Cross section of a removable housing according to the present invention, consisting of a pyrotechnic agent as a power source.
    DETAILED DESCRIPTION OF THE INVENTION
    It has been found that the problems associated with the mist-generating devices from before can be solved by generating a mist-generating device that consists of a removable housing consisting of a power source and mist-generating fluid. In this way, as previously described, the present invention relates to a removable housing for removably connecting a mist-generating device consisting of a heat exchanger, wherein said removable housing comprises a power source and a reservoir of mist-generating fluid. In particular, said power supply may provide energy to carry said spray generating fluid from said reservoir to the heat exchanger of the spray generating device and / or may be used for at least one or more elements of the spray generating device, such as general operation, heating the heat exchanger or driving said mist-generating fluid from the reservoir to the heat exchanger (e.g. via a pump).
    Example: the said power source may be a battery that can be used for the complete drive of the said device, e.g. for the general operation of the device, the heating of the heat exchanger and the driving of said mist-generating liquid from the reservoir to the heat exchanger (e.g. via a pump). A second example: said power source may be a battery that can heat up the heat exchanger and supply power for general operation, while a separate power source, preferably contained in the removable housing, may be used to drive the mist-generating fluid to the heat exchanger (e.g. a pyrotechnic agent). A third, non-limiting example: the removable housing may contain a power source that supplies power only for driving the mist-generating fluid from the reservoir to the heat exchanger. In this example, the current required for the further elements of the mist-generating device, such as the general operation and heating of the heat exchanger, can be supplied via a socket or via a battery that is not present in the removable housing. Therefore, in certain embodiments, the said power source may be a battery and / or pyrotechnic agent. In a further embodiment, the said power source is a battery. In another embodiment, the said power source is a pyrotechnic agent. In a still further embodiment, the power source is a battery and a pyrotechnic means.
    As previously described, the present invention also provides a removable housing for removably connecting a mist generating device consisting of a power circuit, a heat exchanger, means for feeding a mist generating fluid to said heat exchanger and a removable housing consisting of a battery and spray generating fluid. In particular, a removable housing for removably connecting to a mist-generating device in which said battery can at least partially supply said device. Viewed in more detail, said battery can heat said heat exchanger and / or provide power for the overall operation of said device. This battery can preferably power the said device.
    In another specific embodiment, the power supply present is connected to the power circuit of the fog-generating device. To that extent, the removable housing may further consist of a power connection. In a specific embodiment, the said power connection is a battery connection for connecting the battery to the power circuit of the mist-generating device. In another specific embodiment, this power connection is an ignition connection for connecting the ignition of the pyrotechnical means to the power circuit of the mist-generating device. In another specific embodiment, the said power connection is both a battery and an ignition connection for connecting both a battery and a pyrotechnic means to the power circuit of the fog-generating device.
    In a specific embodiment, the power connection is constructed in such a way that the power source is always connected to the power circuit with the correct polarity. In another specific embodiment, the removable housing is constructed so that its placement within the fog-generating device prevents the battery from being connected with an incorrect polarity. Connection with the correct polarity is especially important if the power source in the removable housing is a rechargeable battery. Example: the removable housing and the connection of the mist-generating device in which the removable housing is to be placed can be asymmetrical. It is also an object of the present invention to provide a fog generating device as previously described herein, comprising further fixation means for removably connecting the removable housing to said fog generating device. These fixation means mean that the removable housing is firmly placed in the mist-generating device after installation. All known fixation means can be used, including one or more screws, belts and clamping doors. For example, clamping doors can be hinged and / or fixed with one or more screws.
    In another specific embodiment, the removable housing of the present invention includes fluid connection capabilities to allow a fluid connection between the reservoir in the removable housing with the spray generating fluid and the heat exchanger. The liquid connection possibilities can occur in different forms in different application situations. Such a connection can for instance consist of a pipe in the form of a tube or a hollow needle, an opening or a gap in a membrane. The pipe can be positioned in such a way that no noticeable flow can occur with gravity alone. In this way a controlled delivery of the spray generating fluid can be achieved. The conduit may, for example, consist of a small opening or a tubular section with a small hole so that surface tension of the liquid stops flow. Alternatively, or in addition, the conduit may consist of two-way valves positioned so as to prevent fluid flow unless the pressure differential exceeds a certain value. In particular, the liquid connection possibilities provide a liquid-tight connection through which the spray-generating liquid can be passed from the removable housing to the heat exchanger.
    In addition to the power source in the removable housing that can at least partially power the device and / or provide the energy required to drive the mist-generating fluid to the heat exchanger, the mist-generating device of the present invention may consist of (additional means for feeding a mist-generating fluid to the heat exchanger. Non-limiting examples of means for feeding a spray-generating fluid to the heat exchanger include a pump or propellant gas. In a specific embodiment, the removable housing of the present invention comprises the means for driving a mist-generating fluid to the heat exchanger. Viewed even more in detail, the present invention provides a fog-generating device as previously described herein, a power circuit, a heat exchanger, and a removable housing. This removable housing consists of a battery, a mist-generating fluid and means for feeding said mist-generating fluid to said heat exchanger. And in particular a removable housing consisting of a battery, a mist-generating liquid and propellant gas. One or more valves may be present in the removable housing to prevent ejection of the spray generating fluid. In a specific embodiment, the spray generating device of the present invention consists of a valve adapted to control the flow rate of the spray generating fluid, as described, for example, in EP1985963 A1. In another specific embodiment, the means for driving a mist-generating fluid to the heat exchanger are in the mist-generating device, but not in the removable housing. Example: The spray generating device of the present invention may consist of a pump that is not placed in the removable housing. In this embodiment, the spray generating device of the invention consists of a hydraulic connection to transfer the energy from the pump to the spray generating fluid. In this way, the spray generating fluid is fed from the removable housing to the heat exchanger. A second example: the power source in the removable housing is a pyrotechnic device that supplies the energy required to drive the mist-generating fluid to the heat exchanger. This example shows that no additional means (such as a pump or a pressure vessel) are needed to feed the liquid to the heat exchanger. Therefore, in a specific embodiment, said removable housing consists of a battery and a reservoir with a mist-generating liquid, said reservoir containing a sufficient amount of propellant gas to expel the liquid from the reservoir. In another specific embodiment, said removable housing consists of a pyrotechnic means and a reservoir with mist-generating liquid, the reservoir containing no propellant.
    In a specific embodiment, the power source in the removable housing consists of or comprises a separate holder. This container can be placed inside or outside of the spray generating fluid reservoir. Example: the battery housing is a holder and this battery can be placed inside or outside the reservoir. Another example: the said food source is a pyrotechnic device in which the reagent is located in the said holder (hereinafter also referred to as the reagent holder). The reagent holder can be placed inside or outside the reservoir. In a preferred embodiment, the holder itself is removable from the removable housing. This ensures easy recycling of the removable housing. Example: The removable housing can be removed from the fog-generating device during maintenance and replaced with a new one. The old removable housing is sent to the manufacturer so that he can remove and replace the power source holder. The reservoir with the spray generating fluid can be refilled.
    The present invention specifically has a removable housing consisting of a chemical feed source and a reservoir of spray generating fluid. Examples of a chemical power source include a battery that supplies energy through (electro) chemical reactions and a pyrotechnic that supplies energy through combustion of a reagent.
    In a specific embodiment, the fog-generating device of the invention consists of means for connecting the power-generating circuit of the fog-generating device to an external power source. Any known power supply can be used as an external power supply, including, but not limited to, an electricity grid, an external battery and a solar energy system, generators or alternators. In this case, the external power source is used to power the fog-generating device under normal conditions. As described above, a fog generating device for security purposes should consist of an emergency power circuit to prevent interruptions in the security system. In a specific embodiment, a battery is provided as a power source in the removable housing and is connected to such an emergency power circuit. In such a case, this battery can supply power to the mist-generating device in the event of a power failure in the power circuit. Accordingly, it is also an object of the present invention to provide a fog-generating device consisting of a removable housing as previously described herein, wherein a power circuit is comprised of an emergency power circuit and wherein said power connection capabilities connect said battery to said emergency power circuit.
    In another specific embodiment, the battery of the removable housing of the invention is a rechargeable battery. Any rechargeable battery can be used, for example, a lead-acid battery, a nickel-cadmium battery (NiCd), a nickel-metal hydride (NiMH) battery, a lithium-ion (Li-ion) battery or a lithium-ion polymer (Li-ion polymer) )-battery. In a preferred embodiment, the said rechargeable battery is a battery from the group consisting of a nickel-cadmium battery (NiCd), a nickel-metal hydride (NiMH) battery, a lithium ion (Li-ion) battery or a lithium-ion polymer ( Li-ion polymer) battery. And in particular a nickel metal hydride (NiMH) battery, a lithium ion (Li ion) battery and a lithium ion polymer (Li ion polymer) battery.
    In comparison with the commonly used lead battery, rechargeable NiCd, NiMH, Li-ion and Li-ion polymer batteries are much more compact and are therefore preferred in the context of the present invention. In addition, it has been found that these batteries are more resistant to the high temperatures in the housing of a fog-generating device. High-quality batteries can easily withstand temperatures up to 60 ° C. The inventors of the present application have shown that by using such rechargeable batteries, a removable housing can be built for a fog-generating device, said housing being compact and having a long battery life (on average 5 years or longer). This offers considerable benefits. As previously described herein, the mist generating fluid must be replaced approximately every three years. In the fog-generating device of the present invention, this can be easily done by replacing the removable housing with a new one. In addition to replacing the mist generating fluid, this also replaces the rechargeable battery. The removable housing can be sent to the supplier to refill or replace the mist-generating liquid in the removable housing and to check whether the battery in the removable housing is still good or needs to be replaced. Consequently, the removable housing allows a technician or user to replace an old removable housing with an old battery and old fog generating fluid at the same time with a new housing with a new battery and new fog generating fluid.
    In a preferred embodiment, the rechargeable battery remains charged by the external power source. The present invention also provides a fog-generating device as previously described herein, further comprising: - charging means with which said rechargeable battery can be charged by said external power source and - a controller which controls said charging to ensure that said rechargeable battery remains charged.
    The charging means used can be selected based on the type of the rechargeable battery. A non-limiting example: trickle charging can be used to keep the rechargeable battery constantly charged. In addition, a so-called 'intelligent charger1 can be used that detects when the battery is fully charged. In a specific embodiment, the said controller comprises means for detecting the charging status of the battery. In another specific embodiment, said controller ensures that said rechargeable battery remains in a certain charged state, for example a charged state of 30 to 60% and specifically within a range of 40 to 50%. This ensures an extension of the service life of, for example, Li-ion batteries.
    In addition, the present invention provides a mist-generating device consisting of a heat exchanger and a removable housing as described herein. In another specific embodiment, the present invention provides a removable housing for use in a mist-generating device, consisting of a battery and a mist-generating fluid. In another specific embodiment, the said battery is a rechargeable battery as described above. In yet another specific embodiment, the removable housing of the invention includes battery connection capabilities to connect said battery to the power circuit within said fog generating device. In a further specific embodiment, the present invention provides a removable housing as previously described herein, further comprising liquid connection options to enable the supply of said mist-generating fluid to said mist-generating device. In a preferred embodiment, the spray generating fluid as previously described herein is a glycol-containing mixture. It is to be understood that the present invention also offers the use of a mist-generating device or an exchangeable housing according to the invention for generating mist. In particular for generating mist to protect against intruders and / or physical threats by persons.
    With earlier devices, a pump is often used to expel mist-generating fluid from a reservoir to a heat exchanger. However, in this case, the time required to convert all of the spray generating fluid to spray is dependent on the capacity of the pump, i.e., the ability to deliver a certain flow within a certain time at a certain pressure. Spray generating devices are often powered by standard voltage batteries, which means a further limitation on the capacity of such pumps. Moreover, high capacity liquid pumps would lead to high product prices. For this reason, the use of pumps to expel spray-generating liquids from the reservoir to the heat exchanger significantly reduces the spray emissions of the relevant spray-generating devices. WO2008132113 solves this problem by using a pressure vessel [compressed] as a spray generating fluid reservoir. If mist is to be generated, a normally closed valve (switch) between the pressure vessel and the connected heat exchanger is opened and the pressure within the vessel drives the mist-generating liquid from said vessel to the heat exchanger. This improves the capacity with which the mist can be ejected from the device.
    The capacity with which the mist can be generated is crucial when the device is used as a security device. Example: in the event of a burglary, the fog-generating device fills the room with mist within a few seconds. In that case, valuables are immediately hidden from the intruder's view and the latter tries to escape quickly by leaving the room. If the mist is generated too slowly, the thief can use the extra seconds to quickly take valuables with him before leaving the room. The speed at which mist is generated by the W02008132113 device depends on the pressure in the mist-generating fluid vessel. Although the pressure (P) and the volume (V) in the vessel are theoretically unlimited, their capacity is limited by the legal framework for devices containing pressure vessels. Above certain threshold values for pressure and P x V, legislation makes it impossible to build, transport, install and use such devices. In short: although W02008132113 offers a major improvement for fog-generating devices for security purposes, there is still a need for devices for faster fog generation, eg to fill a room with mist faster or fill larger rooms with mist during the same time frame.
    There is still an inherent risk with regard to previous fog-generating devices. Unlike fog-generating devices for entertainment, military use and training of emergency service personnel, fog-generating devices for security purposes should be able to remain inactive for a number of years without reducing the reliability of these devices. It is indeed very likely that a burglary or violent threat will only occur years after installation of the device (if this is already the case). It has been found that prior spray generating devices consisting of pumps become unreliable over time, probably due to clogging, corrosion and / or chemical resistance problems or other errors with these pumps if they are not used regularly. Although the pumpless variant of WO2008132113 already shows an improvement in this regard, it is not possible to completely rule out that the switch controlling the release of the spray-generating fluid from the preset pressure reservoir shows a micro leak or defects. Thus, there is a need for mist-generating devices that have reliable means to remain stable, even if they are not regularly used, to carry the mist-generating fluid from the reservoir to the heat exchanger. In particular, a mist-generating device without moving parts or pre-pressure control that could get stuck over time would be highly beneficial.
    In particular, it has been found that the interchangeable housings of the present invention in which the power source is a pyrotechnic agent solve the above problems and enable a much faster mist generation due to the high input pressure that can be generated at the heat exchanger. A detailed analysis has shown that previous devices with a pump usually deliver around 6 ml / s of mist-generating fluid to the heat exchanger at about 4-6 bar. Previous devices that use propellant gas to drive the liquid usually work at around 28 ml / s at around 12-15 bar. Remarkably, it has been shown that a mist-generating device of the present invention consisting of a removable housing with a pyrotechnic agent is easily capable of feeding 60-80 ml / s of liquid at about 300-400 bar to the heat exchanger.
    The "reagent" used herein generally refers to a chemical that in a chain reaction with an oxidizing agent is capable of converting the chemical energy present within said chemical into a generation of energetic gas. In principle, any chemical can be used that is converted into a gas in response to an oxidizing agent. In a preferred embodiment, said reagent comprises a fuel and an oxidizing agent. Even more specifically, said reagent is a rapidly conflagrating or deflagrating material. This relates to a material that is capable of rapidly emitting high energy through a subsonic combustion that spreads through thermal conduction in which hot-burning material heats and ignites the next layer of cold material. If the reagent comprises an oxidizing agent, no external oxidizing agent needs to be added. In this way, the mist generator of the present invention can be built as a closed system that requires no external input in addition to ignition energy. After ignition, a chain reaction is started in which the ignited reagent is burned / disintegrated to form gas. This combustion provides the energy required to ignite the remaining reagents in the area. In a specific embodiment, the reagent is an explosive material. A skilled person is capable of selecting any known conflagrating / deflagrating materials. In a preferred embodiment, the reagent is a so-called low or slow explosive. It has been found that these types of explosives emit sufficient gas at a sufficiently high speed.
    In a preferred embodiment, the reagent is a fast-confusing material, such as a nitrocellulose-based material. Non-limiting examples of suitable reagents are single-base propellant gases and their composites, such as solid rocket fuel (sugars, polymers (PBAN and carboxyl and hydroxyl)), specific carbohydrates, nitroguanidine, sodium azide (NaN) and metal powders and oxides (aluminum powder and iron oxide) catocene and ferrocene). Preferably, single base propellants and low toxicity or irritation are used, especially if the generated gas is emitted together with the mist from the mist generating device, e.g. propellants frequently used in airbags. This includes Low Vulnerability (LOVA) propellants (such as RDX, nitrocellulose, CAB and inert or energetic plasticizers) and FOX-based propellants. In addition, double-base propellant gases consisting of nitrocellulose and nitroglycerin and three-base propellant gases consisting of nitrocellulose, nitroguanidine and nitroglycerin or other liquid organic nitrate explosives may be used.
    The "ignition agent" or "ignition system" used herein generally refers to the element or elements that in combination provide the energy required to start the chain reaction for the conversion of the chemical energy within the reagent into a gas (generation of energetic gas). As further explained below, any inflammatory agent can be used and the skilled person is aware of which inflammatory agent is suitable for the reagent used. As non-limiting examples, metal oxidizing agents (zirconium-potassium perchlorate, boron-potassium perchlorate, ...), metal hydride oxidizing agents (zirconium hydride, potassium perchlorate, ...), intermetallic compounds (titanium-boron, nickel-aluminum, palladium-aluminum, ... ) are used. In a specific embodiment, an intermetallic compound is used, in particular palladium-coated aluminum, also known as Pyrofuze. The above types of ignition are particularly useful because they are stable and only require electric current for ignition. Other means of ignition can also be used, such as blowpipes, detonators and other systems based on shock wave and / or heat production. In general, an ignition system includes a portion that supplies energy to the reagent, an ignition switch, and an ignition source of energy. The fog-generating device of the present invention comprises a portion that carries energy from an energy source for ignition to the reagent. Although the ignition energy source and the ignition switch may be located outside the spray-generating device, it is preferable that they be located in the spray-generating device. A non-limiting example: the ignition energy source may include a capacitor that stores electrical energy. After an ignition switch has been turned on, energy can flow from the capacitor through the part that supplies energy to the reagent and so ignite the reagent and start the gas generation.
    In a specific embodiment, the fuel is not a hydrocarbon, such as diesel, gasoline or kerosene. In a further embodiment, the fuel is not a liquid fuel, but rather a solid fuel. As previously described herein, the reagent may comprise a fuel and an oxidizing agent. The fuel and the oxidizing agent can be part of the same molecule or it can be a mixture of the two (separate) components.
    Example: nitrocellulose consists of molecules with an oxidizing agent (nitrate ester groups) and a fuel (cellulose). Examples of oxidizing agents that can be added are 5-aminotetrazole nitrate, KNO 3, potassium oxides and ammonium perchlorate.
    Other additives can also be added. These can help improve (decrease / increase) the combustion rate, the heat produced and / or gas production. Examples are metals and their oxides, ferrocene and catocene and retarders (e.g. carbonates, nitrates and / or oxalates). The rate of gas production can moreover be manipulated by coating reagent particles with relatively inert materials. The thickness of the coating influences the amount of delay.
    The "mist-generating material" or "mist-generating substance" used herein generally refers to any material or combinations of materials that can be vaporized as they pass through a heat exchanger. After being emitted from the heat exchanger at atmospheric pressure and a normal ambient temperature and in addition coming into contact with the moisture and dust particles [in the open air], the vapor condenses in small liquid droplets hanging in the air like an aerosol, with the formation of a visible mist. In a preferred embodiment, the spray generating material is a gel or liquid. In particular a liquid and even more specifically a polyol-containing liquid or gel.
    It has been found that the energy of the gas generated by the ignition of the reagent can be used in various ways to feed the mist-generating material from the reservoir to the heat exchanger. In a specific example, the gas flows into the reservoir and thus expels the mist-generating material in this reservoir. In another example, the gas is used to drive a pump or turbine that carries the mist generating material from the reservoir to the heat exchanger. The generated gas can be hot, causing thermal damage to parts of the mist-generating material. For that reason, in a specific embodiment, the mist-generating device comprises cooling means (6) for cooling the gas before it comes into contact with the mist-generating material.
    In another preferred embodiment, the removable housing of the present invention comprises separating means to prevent contact between the generated gas and the spray generating fluid (8). As shown in Figure 4, the separation means can be moved. In such a case, the displacement of the separating means can lead to the emission of mist-generating material from the reservoir. In a specific embodiment, the generated gas can slide said separating means to move the spray generating fluid from the removable housing to the heat exchanger.
    In another embodiment, the said pyrotechnic means comprises a closed combustion space. This prevents unwanted contact of the spray generating material with the reagent and the ignition, for example due to movement during transport and installation of the device. Particularly when the mist-generating material is a liquid, initial seal of the combustion space, wetting of the reagent and the igniting agent is prevented. In addition, it has been determined by the inventors that combustion in an initially closed combustion space and / or housing with the reagent improves the efficiency of reagent combustion, probably as a result of the higher temperature and pressure in the space and / or housing during gas generation. The space is preferably closed with a pressure-sensitive seal (11) or (14). Only after a certain amount of gas has been produced and thus a certain pressure has been built up in the space, does the combustion space be opened up and the gas emitted. Such a pressure-sensitive seal can consist of a bursting plate that tears at high pressure or a pressure valve. In this embodiment, the pressure-sensitive seal cracks when gas is generated in the combustion chamber, whereby the seal at least partially disintegrates. As a result, the gas generated is ejected from the combustion space and can be used to feed the mist-generating material from the reservoir to the heat exchanger. In addition to a pressure-sensitive seal (as is known to the skilled person), other sealing means can also be used that disintegrate in gas generation. For example, seals that melt above a certain temperature (e.g., zinc-based seals), seals that dissolve in gas production (e.g., lithium-based seals), or combinations of the aforementioned agents. In a preferred embodiment the sealing means consist of impermeable material that prevents the penetration of moisture into the combustion space (10) with the reagent. Such non-permeable material can be, for example, a metallic or metallic coated material. In an alternative embodiment, such a sealing means consists of pressure and / or temperature activated / controlled valves.
    In a particular embodiment, the initial seal may be constructed such that it completely or partially disintegrates during gas generation. For example, as shown in Figure 2, the reagent (1) can be enclosed in a space (10) with a pressure and / or temperature sensitive seal (11). Upon ignition of the reagent and subsequent gas formation, the pressure and / or temperature in the space increases. Under the influence of said pressure and / or temperature, the pressure and / or temperature sensitive seal (11) disintegrates and the generated gas is ejected (4) to the reservoir (3) with the mist-generating material.
    More reagents than strictly necessary can be added to feed the spray generating fluid from the reservoir to the heat exchanger. Given that only small amounts of reagents as described herein are needed to generate large amounts of gas, the consequences of such an addition to the structure and the cost of the device are negligible. However, it has been found that the extra energy produced by the gas generation can be used for a number of additional benefits.
    The greater amount of energy from the emitted mist due to the extra generated gas can also be used to supply ambient air to the emitted mist. Therefore, in another embodiment, the mist generating device may consist of means such as a steam ejector to introduce ambient air into the generated mist. It has been shown that the entrained ambient air results in a better spread of the mist in the environment.
    Moreover, it has been found that the use of a higher amount of reagent than is necessary to carry the mist generating material from the reservoir to the heat exchanger is useful for purifying the heat exchanger after the mist generating material has been ejected. Excess gas generated in this way can be used directly or indirectly to purify the heat exchanger after the mist-generating material has been emitted. With direct use, the surplus gas can flow through the heat exchanger and carry non-emitted vapor from the heat exchanger to the ambient air. With indirect use, the surplus gas can be used to introduce ambient air into the heat exchanger in order to expel non-ejected vapor from the heat exchanger.
    In another aspect, the present invention provides a removable housing for a fog-generating device, consisting of a reagent as defined herein and a reservoir with a fog-generating material, wherein said removable housing further comprises ignition means or similar elements for transmitting an ignition signal of enable said mist generating device to said reagent. In other words, and as will become apparent from the detailed description below, such a "removable housing" or "cartridge" includes the consuming means that are used to feed mist-generating material from the reservoir to the heat exchanger.
    Furthermore, the present invention provides the use of a mist generating device as described herein or a removable housing as described herein for generating mist. In particular for protecting against burglars and intruders. In addition, the present invention provides a method for generating mist. This method: a) generates gas by igniting reagents; b) uses said gas to feed a mist-generating material from a reservoir to a heat exchanger and c) generates mist by heating said mist-generating material in said heat exchanger.
    As previously described herein, the container with the reagent and the igniting means may be located inside or outside the reservoir of mist-generating material. In a specific embodiment, the reagent and the ignition means are located in a container in the reservoir. Preferably, the igniting means come into contact with the reagent and drives the energy required to ignite the reagent. Other components needed to start the ignition, such as an ignition controller and an ignition power source, may be located outside the removable housing and even outside the fog generating device of the present invention (see Figure 1). Example: An external monitoring system can send an alarm signal to the fog-generating device, upon which a switch in the fog-generating device is driven which closes a circuit containing the ignition energy source (e.g. a capacitor or super-capacitor) and the ignition means, thereby igniting the reagent .
    Of course, several pyrotechnic devices can be used in parallel or in series, or via a one-way valve. For example, one pyrotechnic device can be used to generate gas to send a spray generating fluid to a heat exchanger, while another pyrotechnic device can be used for a different purpose, e.g., to flush the heat exchanger after a mist production. Two pyrotechnic devices can also be used, with the gas generated in both being used to send the mist generating material to the heat exchanger. Multiple pyrotechnic devices can also be connected to multiple reservoirs. In this example, the mist-generating material of these reservoirs can be used simultaneously or sequentially. The fog generating device of the invention can be constructed so that after emptying a first reservoir there is still fog generating material in a second reservoir that can be used to generate fog only after receiving an ignition signal. In this way, the mist-generating device can be used multiple times if the empty reservoirs are not immediately replaced. In a specific embodiment, each pyrotechnic device, if more than one is used, may be in a separately removable housing. In an alternative embodiment, the removable housing of the present invention may contain two or more pyrotechnic devices.
    As already described, separating agent may be present to avoid contact between the generated gas and the mist-generating material, for example if toxic or irritating gas is produced after ignition of the reagent. In this case, the separating means prevents the generated gas from coming into contact with the mist-generating material and, thus, being expelled together with the generated mist. In a specific embodiment, the separating means is movable. The separating means can in particular slide to move the spray generating fluid from the reservoir to the heat exchanger. For example, the separating means may be a movable sliding wall within the reservoir, such as a piston. When gas is generated on one side of this wall, the wall moves to expel the mist-generating material from the reservoir toward the heat exchanger. In another embodiment, the separating means can move elastically. For example, the mist generating material may be present in a compressible package, such as an elastic bag. The compressible / expandable package may be in a housing. When the generated gas enters the housing, the compressible package is compressed or expanded thereby expelling the spray-generated material. In another embodiment the separating means is provided with a pump. Energy from the gas generation can be used to drive said pump, which in turn directs the mist-generated material from the reservoir to the heat exchanger.
    In earlier mist-generating devices, it was common for as much gas as possible to be mixed with the mist-generating fluid before it enters the heat exchanger. For example, WO2003001140 describes in detail the advantages of an at least partially dissolving propellant in the mist generating fluid that is used to direct the fluid from the reservoir to the heat exchanger. When the gas is mixed in the spray generating liquid, it expands (as it were, exploding) in the heat exchanger, which ensures a better outflow of the spray. The inventors came to the surprising conclusion that if a pyrotechnic device is used to generate gas that sends the liquid to the heat exchanger, the outflow of mist is even better when the gas is rendered insoluble in the mist-generating fluid. In this regard, preference is given to embodiments in which the removable housing also comprises the separating means.
    An additional advantage is that the separating agent also helps to prevent the reagent from getting wet by the spray generating fluid during transport, handling and use. Thanks to the separating agent, the removable housing can be held in any direction so that the liquid comes into contact with the reagent and the ignition. E.g. when the removable housing, as shown in the images, is inverted compared to what is shown in the images, the fog-generating device continues to operate equally efficiently. The separating means allows the spray generating fluid to always remain in contact with the fluid connecting means toward the heat exchanger even when tilted. Thanks to the specific construction of the removable housing, the mist generating device can be placed in any direction. This provides much more freedom when placing the mist-generating device, since it is often crucial to direct the generated mist to valuables or the likely entry of intruders.
    In a preferred embodiment, the removable housing of the present invention consists of at least four compartments: The first compartment contains the reagent (1), the compartment occupies part of the reservoir of reagent. This compartment should not be enclosed, but optional reagent holding means (25) are available. The reagent retaining means prevent the reagent from being freely distributed in the rest of the housing, and in particular in the combustion chambers for ignition. These means also ensure that the reagent is slightly compressed so that there is good contact between all of the reagent material to ensure that the started chain reaction of the reagent is completed over the full mass of the reagent. This increases the combustion efficiency since more reagent is used in the reaction. • the second compartment is the combustion chamber (13), a free space in the initially sealed reservoir containing the reagent. The combustion chamber also increases efficiency and initial pressure build-up. • the third compartment is an expansion space (23) in which the generated gas can expand to set the separator in motion. The expansion space allows the reagent to burn completely and thus ensure better combustion efficiency. • the fourth compartment contains the spray generating fluid. This compartment is enclosed by at least a part of the reservoir walls and the separating agent.
    It has been found that all of the reagent in the housing of the present invention has been burned. Thus, after the reaction has taken place, the rest of the housing is clean and contains no residual reagent that can be ignited. The removable housing can thus be recycled or disposed of safely.
    As is evident from the above, in each embodiment, the energy released from the gas reagent is used to direct the spray generating material, in particular the spray generating fluid from a reservoir to a heat exchanger. Either the energy of the gas generation is used directly because it enters the reservoir and thereby expels the mist-generating material, or it is used indirectly, e.g. to drive a pump or turbine. In a preferred embodiment, said gas enters said reservoir to direct said mist generating material from said reservoir to said heat exchanger. As already described, the gas entering the reservoir may come into contact with the mist-generating material, or may be separated from the mist-generating material by the separating means. To avoid a possible negative effect of hot gas on the components of the mist-generating material (e.g., glycol), in a specific embodiment, the mist-generating device of the present invention contains coolant (6) to cool said gas before it is cooled with said mist generating material comes into contact. Any coolant can be used, eg a cooling tunnel that passes through the mist-generating material. The mist generating material around the cooling tunnel is heated while the gas passes through the cooled tunnel. The advantage of this is that the mist-generating material is preheated before it comes into contact with the heat exchanger, this requires less energy from the heat exchanger to turn the mist-generating material into vapor.
    In a preferred embodiment, the reservoir containing the mist-generating material is initially closed. This ensures that the mist-generating material in the reservoir is only released when necessary. The closing means (12) can be sealing means as described for the combustion chamber. In a specific embodiment, the closing means are pressure sensitive. If after a gas generation the pressure in the reservoir rises above a certain threshold, the closing means are opened and mist liquid flows to the heat exchanger. The opening of the closing means places the reservoir in fluid communication with the heat exchanger which leads to spray generating material being sent from the reservoir to the heat exchanger. Other closing means can of course also be used, e.g. a valve that can be opened mechanically. The closing means can be opened at the same time as the ignition, or only after a certain time or pressure or temperature, etc. In the event that said closing means are hindered, additional safety means (16) can be installed in the housing of the reservoir, which generates the mist. material is incorporated. In its simplest form and as explained in Figure 1, these additional safety means may consist of a pressure-sensitive seal such as a breaker plate or a safety valve.
    The fog-generating device according to the present invention will preferably be used for security applications; it must therefore be able to spray a very large amount of mist per second. Knowing that approximately 1 ml of the spray-generating fluid is sufficient to darken approximately 1 m3 and that approximately 1000 Joules are required to convert the spray-generating fluid to spray, the heat exchanger must be at least 25 kJ / s, and preferably 100 kJ / s , can deliver. Given the speed with which the liquid is converted into vapor [steam], one cannot rely solely on the thermal conductivity of the heat exchanger used. The heat exchanger to be used in the fog-generating device, according to the present invention, must therefore have a high heat capacity (C), such as for example by using steel (± 0.46 J / ° C per g) or copper, optionally in combination with a latent heat from a fusion accumulator; and a high heat transfer through a large contact area between the spray generating fluid and the heat exchanger. The latter can be realized, for example, by using the labyrinth design with stacked plates (17) as shown in Figure 1. Such labyrinth design not only ensures rapid heat transfer, but also creates a relatively large dynamic resistance. A pressure drop between input and output of 50 bar at a flow rate of 100 ml / s can therefore not be excluded. However, due to the high pressure generated in the reservoir with the mist-generating material caused by the gas conversion of the reagent, this pressure drop is not a problem for the mist-generating apparatus described here. The stacked plates, as shown in Figure 1, are welded together around a thick-walled central tube (19) that directs the mist-generating fluid to the top of the stack. The stack of plates is covered and connected to a base element (22) containing the inlet and outlet, by means of a cover element (21) with a central axis (20) in the middle of said supply tube (19). Said shaft not only increases the heat capacity, but also improves the heat transfer of the mist-generating material that rises in the narrow central tube (19).
    In yet another specific embodiment, the gas purifies the heat exchanger after the mist-generated material has been turned into mist. It has been found that purifying the heat exchanger prevents negative effects from residues of mist-generating material remaining in the heat exchanger. These residues that remain in the hot heat exchanger can lead to bad odor, corrosion and accumulation of dry matter. Mainly sufficient reagent is used to generate more gas that is strictly necessary to direct the mist generating material from the reservoir to the heat exchanger. After the spray generating material has been sent through the heat exchanger, the generated gas continues to flow through the heat exchanger so that it is purified. If the generated gas is used to drive a pump that sends the spray generating material to the heat exchanger, it can continue to drive said pump and, as a result, pump air through the heat exchanger and purify it.
    In another specific embodiment, the removable housing of the present invention includes pressure releasing or venting means. This is especially useful if the removable housing contains a pyrotechnic device for controlling spray generating fluid from the reservoir to the heat exchanger. Pressure releasing means are responsible for releasing gas from the removable housing so that the pressure within the removable housing is limited and comes closer to atmospheric pressure. Pressure releasing means ensure safer handling and recycling of the removable housings of the present invention. Pressure release means can be constructed so that they can be actuated automatically or manually. It is obvious that the removable housing of the present invention can contain both automatic and manual pressure release means. A pressure release means may, for example, be a valve that must be manually switched. In a specific embodiment, pressure releasing means are constructed in a manner such that the pressure in the removable housing is automatically released during or after the spray generating process. In another specific embodiment, the pressure is released when the removable housing is removed from the spray generating device. For example, the pressure release means includes a valve that opens automatically when the removable housing is disconnected from the spray generating device. In a preferred embodiment, the pressure releasing means are constructed in a manner such that the pressure in the housing is released when all spray generating fluid has been expelled from the reservoir. The present inventors found that, in addition to improved safety during handling and recycling, the pressure release means can be constructed in such a way that the gas released from the housing during the release process can be used to purify the heat exchanger . In this embodiment, after all the spray generating fluid has been expelled from the housing, the generated gas can be expelled from the housing to the heat exchanger, thereby purifying the heat exchanger. For example, as shown in Figure 7, the removable housing may include separating means that move through the generated gas to expel the liquid from the reservoir. The reservoir contains pressure release means which are present as a groove in the wall of the reservoir. When all of the liquid has been expelled from the reservoir, the separating means are located at the groove. Gas generated by the reagent is present at a high pressure and can escape through the groove from the housing. The pressure inside the housing is thereby lowered in the direction of atmospheric pressure. The escaped gas can enter the liquid connecting means towards the heat exchanger, the heat exchanger being purified, which leads to the advantages described above.
    The inventors found that, due to the limited volume of reagent required to generate the gas for the complete mist generation process, a removable housing for the mist generating device of the present invention can be easily built, that of a reagent and reservoir with spray generating fluid is provided. Such a removable housing with a pyrotechnic device can be constructed very small. Since the use of a pyrotechnic device eliminates the need for a pump or a large pressure vessel in the spray generating device, the removable housings of the present invention allow the construction of much smaller spray generating devices compared to the past. In addition, unlike various prior fog generating devices, the devices of the present invention that include a removable housing can be easily repaired so that they can be reused. After a mist-generating device has been used, only the insertion of a small removable housing of the invention is needed to get a functional mist-generating device. While in earlier devices a completely new fog-generating device had to be transported, only small cartridges have to be transported thanks to the present invention. In addition, a user can easily save spare removable cases in case a replacement is required. The connection-safe replacement, which is permitted by the removable housings of the present invention, ensures that a non-skilled user can replace the removable housing by himself. In previous devices, repairing an empty fog-generating device required replacing the entire device with the device having to be disconnected from the security system. This operation could only be performed by a trained technician.
    The invention provides a removable housing for a fog-generating device that contains a reagent and a reservoir with a fog-generating material, wherein said removable housing comprises means that allow the transfer of an ignition signal or ignition energy from said fog-generating device to said reagent. The skilled person is well aware of how to select means to allow transmission of an ignition signal / impact transporter or energy from said fog generating device to said reagent, depending on the reagent used and the structural requirements of the removable housing. In a specific embodiment, the removable housing includes at least a portion of the ignition and connection means to transmit a signal or ignition energy from the fog generating device to at least a portion of said ignition means. For example, the removable housing may include an ignition cable that contacts and ignites the reagent when an electrical current passes through it. The electrical connection means connect said ignition cable to the electrical supply system of the fog-generating device. The mist-generating device transfers electrical current or an electrical signal to the ignition cable or ignition means in the removable housing and starts gas generation. There are, of course, other possibilities for transmitting the ignition signal from the mist-generating device to the removable housing, such as means for transferring a shock produced by an element of the mist-generating device to the reagent, or means for providing the transfer of laser energy from a laser source in the fog-generating device to the reagent in the removable housing, etc.
    Examples of embodiments of such removable housings, including various embodiments of the present invention, are shown in Figures 2 to 7. Each of said images provides cross-sectional views of the removable housings for use in a fog-generating device according to the present invention.
    Figure 2 represents the aforementioned embodiment in which the removable housing contains a pyrotechnic device. The pyrotechic device is a container (10) containing the reagent and the igniting means (2). The container (10) is located inside the reservoir (3) with the spray-generating material (4) (in the example of the embodiment, this is a spray-generating fluid). Ignition of the reagent results in the conversion and formation of gas, with an increase in pressure within said housing. The top of said container contains a pressure-sensitive seal (11) (in the current example a breaker plate) which is opened at a given pressure (in the current example at a pressure of approximately 180 Bar). Upon opening, the gas in the mist-generating material is expelled with an accompanying pressure increase in the reservoir containing the mist-generating material. With the aid of the closing means (12) (such as a valve or pressure-sensitive seals) the release of the spray-generating material under pressure can be controlled. In a specific embodiment, these closing means consist of a pressure-sensitive seal, whereby the presence of moving elements that control the release of the spray-generating liquid from the reservoir is excluded. During the opening of said closing means, the gas generated from the reagent sends the mist-generating material from the reservoir to the heat exchanger to convert the mist-generating fluid to mist which the mist-generating device subsequently turns off.
    In Figure 3, the removable housing also consists of a combustion chamber (13). As already mentioned, the presence of such an initially sealed combustion chamber improves the efficiency of burning the reagent. Unlike the embodiment shown in Figure 2, the presence of the initially sealed combustion chamber prevents any interaction between the mist-generating material and the reagent. The latter can lead to an undesired and potentially dangerous reaction of products and should preferably be avoided. In the current example, the ignition of the reagent can lead to the conversion and generation of a gas that is initially entrapped in the combustion chamber and, due to a pressure increase, results in the opening of said chamber via a pressure-sensitive seal (14) (in the current example) is this a break plate). A further release of the gas in the reservoir and a possible release of the mist-generating material from the reservoir is analogous to the embodiment of Figure 2 above.
    As already mentioned, in order to avoid a possible negative effect of hot gas on the components of the mist-generating material (e.g., glycol), in a specific embodiment, the mist-generating device of the present invention contains refrigerant (6) to discharge said gas cooling before coming into contact with said mist-generating material. Figures 5 and 6 are examples of such coolants. In Figure 6, a cooling tunnel passes through the mist-generating material, with release of the cooled gas into the upper gas (15), which is generally found in a reservoir with side-generating fluid. To preserve the fog-generating material, such upper gas consists of a noble gas such as nitrogen or argon. In the alternative embodiment, shown in Figure 6, the generated gas is released into the spray-generated material instead.
    In each of the foregoing examples of the embodiments, the gas generated eventually comes into contact with the mist-generating material. As already mentioned and depending on the mist-generating material used, this is not always desirable. In certain circumstances, direct contact between the mist-generating material and the gas generated from the reagent should be avoided. In said example, the removable housing contains additional separation means (8) between the mist-generating material and the gas generated from the reagent, such as the movable wall, as shown in Figure 4 and Figure 7, which surround the combustion chamber in a liquid-tight manner. In other words, said wall acts as a piston in a shaft (in the present example, the reservoir with the generating fluid and the outer circumference of the combustion chamber) and directs the mist generating material from the reservoir to the heat exchanger. Therefore, in a specific embodiment, the separating means comprise additional sealing means (24a and 24b) to prevent leakage of liquid between said piston and shaft. Said sealing means can be any suitable stopping means, including a sealing gel, one or more sealing rings or a sealing piston head. Such sealing rings and sealing piston head can be made of any suitable material, including but not limited to plastic, metal or elastomer. As stated herein, in a particular embodiment, excess gas is generated and said excess gas can be used to purify the heat exchanger, directly or indirectly, and to discharge non-ejected vapor from the heat exchanger into the air. In order to activate said purification in the case of additional separation means (8) between the mist-generating material and the gas generated from the reagent, said separation means must contain optional pressure release means (18). As shown in Figure 5, said pressure release means may consist of a break plate or a break point in the movable wall. In another embodiment, the pressure release means (18) may be present in the form of a groove in the reservoir, as shown in Figure 7. When the separating means (8) have expelled all spray generating liquid from the reservoir, they are located at the groove so that excess gas can leave the reservoir and the coating enters the heat exchanger, thereby purifying said heat exchanger.
    The construction of a removable housing containing reagent and fog-generating material ensures that said auxiliary substances can be replaced in a single operation. The use of such a removable housing makes it unnecessary to replace the reagent and the fog-generating material separately. It is therefore obvious that the fog-generating device of the present invention may contain multiple removable housings, e.g. for redundancy or for additional fog generation.
    权利要求:
    Claims (15)
    [1]
    CONCLUSIONS
    A removable housing for removable connection to a spray generating device containing a heat exchanger, said removable housing comprising a power source and a reservoir of spray generating fluid.
    [2]
    The removable housing of claim 1, wherein said power supply may provide energy to direct said spray generating fluid from said reservoir to the heat exchanger of the spray generating device and / or to drive said spray generating device at least in part.
    [3]
    The removable housing of claim 1, wherein said power source is a chemical power source, such as a battery, a super capacitor and / or a pyrotechnic device.
    [4]
    4. The removable housing of claim 3, wherein said pyrotechnic device contains a reagent and igniting means and wherein the ignition of the reagent generates gas that directs the mist-generating fluid from the reservoir to the heat exchanger
    [5]
    5. The removable housing of claim 4, which contains additional separation means to avoid contact between the generated gas and the spray generating fluid.
    [6]
    The removable housing of claim 5, wherein the generated gas can move the separating means sliding, elastic or already expanding to direct the spray generating fluid from the removable housing to the heat exchanger.
    [7]
    7. The removable housing of claim 4, wherein said pyrotechnic device contains a sealed combustion chamber.
    [8]
    The removable housing of claim 7, wherein said combustion chamber is sealed with a pressure sensitive seal.
    [9]
    9. The removable housing of each of the previous claims, which contains additional pressure release means.
    [10]
    The removable housing of claim 9, wherein the pressure release means are constructed in a manner such that the pressure in the housing is released when all spray generating fluid has been expelled from the reservoir.
    [11]
    The removable housing of claim 10, wherein said pressure release means are constructed in a manner such that the generated gas can be expelled from the housing to the heat exchanger, thereby purifying the heat exchanger.
    [12]
    12. The removable housing of claim 3, wherein said battery is a rechargeable battery, such as a rechargeable battery selected from a lead-acid battery, nickel-cadmium battery (NiCd), nickel-metal hydride battery (NiMH), lithium-ion battery (Li-ion) lithium -ion polymer battery (Li-ion polymer).
    [13]
    13. A fog-generating device comprising a heat exchanger and a removable housing in accordance with any of the previous claims.
    [14]
    The fog-generating device of claim 13, wherein said power source in said removable housing is a super-capacitor and / or a rechargeable battery, said fog-generating device also comprises: - charging means for charging said super-capacitor and / or rechargeable battery by said external power supply, and - a controller that controls said charging means to ensure that said super capacitor and / or rechargeable battery is kept in a charged state.
    [15]
    Use of a fog-generating device in accordance with claim 13 or 14, or the removable housing in accordance with any of claims 1 to 12, for generating mist, in particular for generating mist to prevent intruders and / or or physical threat by protecting individuals.
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    同族专利:
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    EP2719432A1|2014-04-16|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL1039846|2012-10-11|
    NL1039846|2012-10-11|
    NL1039983|2012-12-31|
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