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    • 专利摘要:
    patent disclaimer: "mobile disinfection unit for disinfecting a particular installation or equipment and method of use of said unit". The present invention relates to a method for disinfecting a given installation or equipment and a mobile disinfecting unit for use in the method. The present invention relates to a method for disinfecting a given facility or equipment such as a space, apparatus, container or vehicle and a mobile disinfecting unit (1) for use in the method. The method comprises a treatment step arranged to add ozone and vapor / water droplets to the air of the facility or equipment, means (25) for continuously detecting the concentration of ozone in the facility or equipment, and a removal step arranged to remove the ozone. any contaminants in the facility or equipment when a predefined ozone concentration is reached and maintained for a specified period of time. 21897476v1 1/1 21897476v1
    公开号:BR112014018309B1
    申请号:R112014018309-0
    申请日:2013-01-25
    公开日:2019-06-25
    发明作者:Jan Arlemark
    申请人:O3 Technology Research & Development Ab；
    IPC主号:
    专利说明:

    Report of the Invention Patent for "MOBILE DISINFECTION UNIT FOR DISINFECTING A CERTAIN INSTALLATION OR EQUIPMENT AND METHOD OF USE OF THE DITA UNIT".
    The present invention relates to a method for disinfecting a particular plant or equipment as an environment, apparatus, container or vehicle, and a mobile disinfecting unit for use in the method.
    [002] It is well known that facilities of different types such as rooms, containers or vehicles may be infected or contaminated with different chemicals, spores or viruses. These infections or contaminants are harmful to health and quality of life. So far the technology is mainly based on manual cleaning, which is time consuming and costly and which additionally contains the risk of cross-contamination during the cleaning period.
    Several attempts have been made to address this problem, however at present there is no integrated system available for cleaning and disinfecting hospital rooms, where nanoparticles can also be removed to a high degree. Nanoparticles are present in all environments and are also susceptible to being formed of different gases in the air after being oxidized by ozone. Terpenes for example form nanoparticles when oxidized and many are carcinogenic. In addition, in hospitals and anesthesia many of the inhaled gases and their residues contain components harmful to health and the environment.
    UV light is used in hospitals to sterilize air but the method only removes very few specific types of pollution and furthermore does not create enough radiation to remove bacteria and spores within an acceptable time limit. Chemical treatment is risky for the staff and through mechanical filtration the pollution particles are only collected on a screen.
    Mechanical filtration equals a high pressure loss. The filter needs to be replaced and can become a source of bacterial contamination. In contrast, electrostatic filtration does not cause a large pressure drop and removes preexisting particles. Electrostatic filtering, however, does not act on gas-phase pollution.
    [006] Ozone in combination with moisture is known to have a rapid effect on spores, viruses and bacteria. Ozone is additionally one of the strongest oxidizing agents known to mankind. During ozone treatment several of the substances in the air are oxidized resulting in byproducts of nanoparticles directly able to penetrate the respiratory system, or have health or environmental effects.
    In order to remedy the above disadvantages, different modifications and variations of disinfection and sterilization methods have been proposed. Examples include the methods and apparatus of Steritrox Limited in patent application No. GB2468641 and in U.S. Patent No. 7,604,774. The sterilization method disclosed in patent application No. GB2468641 is for the sterilization, decontamination and / or sanitization of a cold environment, for example a food preparation area. The method describes the steps of measuring the temperature of a closed environment to be treated, calculating relative humidity, introducing moisture into the environment, introducing ozone into the humid environment, maintaining a pre-set concentration of ozone in the environment, and finally removing ozone from the environment. again after the desired degree of sterilization is obtained. In case the ozone removal takes too long, the ozone level can be reduced by introducing a hydrocarbon gas containing a carbon-carbon double bond in the environment. The sterilization method presented by Steritrox Limited in U.S. Patent No. 7,604,774 is very similar to patent No. GB2468641, however which comprises the step of introducing an aromatic hydrocarbon into the humidified environment after introducing ozone to preferably react with said ozone discharged to form hydroxyl radicals. Steritrox documents, therefore, do not allow the apparatus to collect the contaminants produced and to decompose the contaminants into a filter. Further, in U.S. Patent No. 7,604,774 the apparatus does not collect and decompose the residual ozone into a catalyst. In addition, it is not considered to remove toxic gaseous contaminants and particulates such as smoke and air dust.
    Patent No. WO 2008/014615 Al discloses a method of sterilizing a closed environment such as hotels, airplanes, cruise liners and hospitals, and a disinfection apparatus to be used in the method. The method of sterilization is, among others, intended for SARS, influenza virus, poliovirus and rhinovirus. The method comprises the steps of placing the disinfection apparatus in the closed environment, causing the apparatus to generate ozone in the closed environment to a predefined ozone concentration, rapidly increasing the humidity in the closed environment to a predefined level and guiding the air in the closed environment through a catalytic converter so that the concentration of ozone is reduced to a predetermined safe level, wherein at that stage the disinfection apparatus signals that the enclosed environment is safe to enter. The predefined ozone concentration is found to be between 15 to 40 ppm, or 20 to 30 ppm and can be depleted with a catalytic converter and for guiding ozone through a tray of manganese dioxide and activated carbon. The humidity in said closed environment can be increased to levels greater than 90% by the use of an ultrasonic humidifier. The disinfection apparatus may further comprise, for example, an ozone sensor and a first fan for guiding the ozonated air into the catalytic converter. In the meantime, WO 2008/014615 A1 only provides an inlet pipe, so that the intake of air to the apparatus takes place through the same inlet pipe during both the initial introduction of ozone into the environment and the reduction of final ozone. The processes can not be separated, which complicates the model of the apparatus and causes a greater wear of the apparatus. The patents No. 2,272,509 A and U.S. 2009/010801 A1 furthermore have air filters which comprise more than one cleaning medium, such as an ozone depletion unit, VOC filter and electrostatic filter. However, they do not provide an alternative model with respect to the inlet pipe, but, in addition, they only have one inlet pipe.
    Known methods for sterilizing / disinfecting a given facility in this way result in an incomplete and complicated process.
    It is a first aspect of the present invention to provide a disinfection method of the type mentioned in the opening paragraph which is simple to operate.
    It is a second aspect of the present invention to provide a disinfection method of the type mentioned in the opening paragraph which produces a complete disinfection of the plant or equipment.
    It is a third aspect of the present invention to provide a disinfection method of the type mentioned in the opening paragraph which is safe to use.
    It is a fourth aspect of the present invention to provide a disinfection method of the type mentioned in the opening paragraph which exhibits a rapid disinfection process.
    It is a fifth aspect of the present invention to provide a disinfection method of the type mentioned in the opening paragraph which has a relatively low energy consumption.
    It is a sixth aspect of the present invention to provide a mobile disinfection unit which facilitates the method in accordance with the present invention.
    It is a seventh aspect of the present invention to provide an alternative to the disinfection method mentioned in the opening paragraph.
    The novel and unique features by which these and other aspects are achieved in accordance with the invention consist in the fact that the method comprises a treatment step arranged to add ozone and droplets of water and / or vapor into the air of the installation or apparatus, means for continuously detecting the concentration of ozone in the plant or equipment and a withdrawal step arranged to remove residual ozone and any contaminant from the plant or equipment when a predefined ozone concentration is reached and maintained for a specific time interval .
    An enormous advantage of applying these two separate steps while simultaneously detecting the concentration of ozone in the plant or equipment is that the progress of the treatment step can be monitored by the means for detecting the concentration of ozone. The monitoring effect means that different parameters of the treatment step, for example ozone and water / vapor droplet concentrations, can be tracked and adjusted according to the progress thereof and that a predefined ozone concentration can be achieved and maintained for a specific time interval. The monitoring effect furthermore means that the treatment step can be controlled so as not to be interrupted prematurely before the contaminants have been completely removed. Having a removal step ensures that the residual ozone and any other additional contaminants will be completely removed from the plant or equipment after the treatment step and thus leave no product from the treatment process uncorrected.
    Within the context of the present invention, the term "contaminant" means any undesirable components present in the plant or equipment and will encompass both the final products and by-products present after the treatment step, as well as inorganic material such as carbon monoxide and cigarette smoke, organic compounds like pollen, as well as living organisms like viruses, spores and bacteria.
    Advantageously, the method further comprises means for continuously detecting an additional parameter in the plant or equipment, said parameter being selected from the temperature group, relative humidity, concentration of one or more contaminants, or a combination of said parameters. By having said means facilitates better control of the entire disinfection process, i.e. that the single steps in the disinfection process can be controlled and adjusted continuously and optionally automatically, depending on the parameter detected by the means.
    The means for detecting said additional parameter will depend on the relevant parameter, however such detection means are well known in the art.
    The treatment process may preferably comprise the individual steps of first circulating the air continuously in the plant or apparatus from a first inlet port to a first outlet port. Then the mixture of ozone and water / vapor droplets can advantageously be formed by the production of water and / or steam droplets and addition of water and / or steam droplets to the air stream, for example, to facilitate formation of hydroxyl radicals, followed by the production and mixing of the ozone molecules with droplets of water and / or vapor in the air stream. By forming the mixture in the air stream prior to expelling it to the plant or equipment, it helps ensure that a homogeneous mixture between the ozone and water droplets and / or steam has been formed. Optionally, to the mixture one can add negative ions or electric charge, before the mixture is released to the installation or equipment.
    In a preferred embodiment, the method comprises calculating the required treatment time. The treatment time may, for example, be dependent on the increase in ozone concentration. In one example the water / vapor droplet concentrations and the concentrations of ozone can be increased or decreased in order to meet the calculated treatment time, or alternatively the treatment time can be adjusted if the predefined ozone level can not be reached . In this way it is possible to ensure optimum disinfection conditions.
    After the elapsed treatment time, the production and release of water / vapor and ozone droplets to the plant or equipment is interrupted, thus finalizing the treatment process.
    It is preferred that any ventilation or other airflow between the plant to be disinfected and other facilities is closed before and during the execution of the method according to the invention, so as to ensure that the ozone used in the method according to the invention does not spread to other facilities.
    Advantageously, a relative humidity level (R.H.) above 50% at room temperature may be applied. High levels of relative humidity, R.H> 50%, help the particles to clump together and by having high levels of relative humidity in conjunction with ozone at a predefined level, rapid disinfection occurs. The moisture may, for example, be obtained simply by adding the ozone mixture and droplets of water and / or steam and if said moisture is not sufficient to be created with miniature spray nozzles (for example, foggers), or through high frequency stirrers or through the generation of heat and steam by the temperature. Humidity can be adjusted depending on the specific type of contaminant. If the contamination mainly comprises viruses, spores or bacteria, the moisture may preferably be 40%, 75-80% or 65%, respectively.
    The moisture present in the plant after completion of the method according to the invention may in a preferred embodiment be recovered through a dehumidifier and be reused in the method according to the invention. In a different embodiment, said moisture is simply left in the plant or equipment and can be removed by means of, for example, a ventilation system or climatic system already present in the plant or equipment.
    In principle any source of ozone may be used, provided that the ozone can be delivered or generated in the desired amounts and in a safe manner.
    In a preferred embodiment the ozone source may be an ozone generator such as, for example, a corona discharge generator. Electric corona discharge generators produce large amounts of ozone economically. Ozone can additionally be generated through the use of UV light although this is very inefficient and costly these days. However, if the technology advances to generate ozone through the use of UV or other methods, it can be incorporated into the present invention. Ozone can alternatively be produced by electrolysis.
    However, by such a reason a corona discharge ozone generator is the preferred method. The passage of an alternating high-voltage electric current through an air stream containing oxygen breaks down molecular oxygen into atomic oxygen. These oxygen atoms can react to form ozone. Commercial ozone generators are available in various shapes and sizes with various capacities to generate ozone. In a further preferred embodiment the ozone source may be an AB-03 technology ozone generator which is based on a technology in which oxygen or air is passed through a corona discharge tube or through parallel plates and a charge is maintained by a medium frequency AC voltage. The amount of ozone is made by a pulse train in combination with the voltage regulation. This unit will produce most of the ozone in the system / reactor. Ozone oxidizes all or almost all organic compounds such as unsaturated and aromatic hydrocarbons. However, many types of chemical compounds, such as saturated hydrocarbons and material entrapped in the liquid or solid phases of aerosols, may or may not react with ozone. Other air pollutants that may not react with ozone include carbon monoxide, pollen, and cigarette smoke.
    Ozone acts as a biological material of bi-oxy extermination, such as bacteria, molds and spores in the air or on surfaces. Ozone is a naturally occurring substance that cleans the air and removes odors from the air. Photochemical oxidation by O 3, OH and other species in the reaction region will mainly result in additional oxygen containing functional groups (eg, alcohols, carbonyls, acids, etc.) in organic pollution molecules. Each functional group will reduce the vapor pressure of the organic molecule, increasing its propensity to form aerosols.
    At high levels of relative humidity typically above 50% RH, ozone and water react, thus forming highly reactive ozone-based free radical intermediates, such as hydroxyl radicals, which in turn react with and neutralize pathogens carried by the air as well as pathogens on all surfaces. The presence of water vapor initially breaks down ozone into oxygen (O2) and an electronically excited oxygen atom (0 *), also called an oxygen radical. The excited oxygen radical can react with the organic material (moisture) in the air and form hydroxyl radicals 0 * + H20 = 2 -OH
    In addition, the excited oxygen moiety may react with a hydrocarbon or with an oxygen molecule to reform the ozone 0, + hv = 0, + 0 * 0 * + H20 = 2 x OH 0 * + RH = OH Where hv is a photon with a wavelength below 330 nm ΌΗ is a hydroxyl radical, RH is a hydrocarbon, M is a collision partner, usually N2 or O2 and 0 * is an excited oxygen molecule.
    The hydrocarbon radicals may react by addition or fragmentation to obtain aldehydes, ketones, acids, alcohols or other functionalized hydrocarbons.
    Thus, in the treatment zone, a part of the ozone will be broken down into oxygen gas and hydroxyl radicals. It will also be recognized by those skilled in the art that hydroxyl radicals may form peroxides, which may act as biocides. Therefore, these peroxides, together with the hydroxyl radicals, help in exterminating any living biological material that may enter or be present in the treatment zone. The hydrocarbons may react with hydroxyl radicals: CH3 + * OH * * CH3 + 02 + M = CH302 + M CH302 + NO = CH30 + NO2 CH30 + o2 = CH2O + HO2 NO is present in ambient air . Any type of hydrocarbon will make an oxo radical such as the above methoxy radical and this radical can donate one H to O 2 to form a stable aldehyde / ketone and -HO
    Another source of H0, will be: * H02 + * H02 = H2O2 + 0 Ozone in combination with moisture, which can form hydroxyl radicals and / or peroxides, destroys microorganisms that are not exterminated by ozone. Free radicals formed by the interaction of ozone with water in the treatment zone act as an oxidant on cell walls even before penetrating into microorganisms, where they oxidize essential components such as enzymes and proteins.
    [0041] Ozone reacts significantly with both water and oxygen. Water and air merely provide the medium in which ozone diffuses to react with organic molecules as to those outside the cell wall of pathogens such as bacteria, viruses, molds, or pollen. Ozone and water assist in the decomposition of several highly reactive free radicals, such as hydroxyl radicals. The treatment time can be calculated from the ozone curve accumulated in the air to ensure the required treatment time, defined as the time from which the ozone concentration has reached its preset value. It is possible, depending on the circumstances and the facility or equipment to be cleaned / disinfected, having a low ozone concentration for a long period of time or a high ozone concentration for a short period of time, the only requirement is that the concentration of ozone and the time that said concentration is present in the plant or equipment is fixed so that the contaminants are decomposed. For example, it may be mentioned that if the ozone concentration is 15 parts per million (ppm) the said concentration must be maintained in the plant or equipment for a period of 45 minutes to 1 hour for sufficient decomposition to occur.
    An important feature of the method of the invention is that an aerosol growth zone is supplied through water and ozone. The purpose of this step is to allow the particles to grow by removing pollution from the gas phase. The treatment time must thus be configured to ensure sufficient retention time for aerosol growth.
    One problem of traditional air purification is that odors and odors can not be removed even by ozone. However, due to the use and formation of -OH, other ozone-derived radicals or other sources, smells and odors can be removed.
    The required treatment time depends on several factors, including the type of contamination to which the apparatus is exposed during treatment, the source of ozone, the temperature, the volume of the space to be treated and the level of total impurities . If the organic content increases in the system, the generator can increase the concentration to be able to treat the air in the predicted time. The device will automatically set up for a longer treatment time if it finds that the default ozone level is difficult to reach. Based on the required flow rates in the system and the dimensions of the space / facility / equipment, the treatment time should typically be less than 30 minutes, preferably less than 20 minutes, most preferably less than 10 minutes.
    [0046] After the treatment process, the removal process can be initiated. The removal process may preferably comprise the individual steps of first continuously circulating the air in the plant or equipment from a second inlet port to a second outlet port. In order to remove residual ozone, the inlet air flow is exposed to a catalytic converter device which comprises one or more ozone removal catalysts. The catalytic converter device provides a means for removing residual ozone to thereby avoid the risk of exposing, for example, the staff to a hazardous ozone concentration when the staff enters the facility after the disinfection process is completed. completed.
    In order to ensure that the air in the plant or equipment is completely cleaned, the air may preferably also be exposed to a Volatile Organic Compound (VOC) filter composed of titanium dioxide irradiated with ultraviolet (UV) radiation to remove bacterial viruses and other contaminants that were not removed or decomposed after the ozone treatment in the treatment process. If any molecules, particles and droplets still remain after the VOC filter, they may be exposed to electrostatic plates, which provide the said molecules, particles and droplets remaining with an electric charge, which ensures removal in an electrostatic precipitator. Any remaining minor particles can be removed in an electrostatic filter, which comprises charged metal plates.
    A catalyst converter device for removal of residual ozone may be very important, since prolonged exposure to high concentrations of ozone can irritate the respiratory system and damage the lungs. The US Environmental Protection Agency (EPA) ranks an average of 8 hours of exposure to 85 to 105 parts per billion (ppb) as harmful to health for sensitive groups. Concentrations greater than this increase the risks. It is therefore preferable that the ozone concentration be reduced to an ozone concentration below these levels and at least below <0.1 ppm before the removal process is completed.
    The catalyst converter device may comprise one or more ozone removal catalysts known in the art. Ozone removal catalysts which may be used include manganese dioxide, aluminum-only catalysts, a carbon supported metal oxide, copper, chloride-coated carbon fibers, carbon-iron aerosol particles and metal catalysts. Carulite ® (an inorganic oxide) made by the Carus Chemical Company is another ozone removal catalyst. The catalyst may be supported by solids and any solid support may be used, preferably glass or silica. The catalyst may also comprise manganese dioxide-containing paint.
    The residual ozone removal catalyst preferably has a large surface area for contacting the air containing the residual ozone.
    Unstable and highly reactive intermediate free radicals obtained from ozone, for example hydroxyl radicals, form stable products which include water and carbon dioxide, which are not associated with health risks when present in the air in small concentrations. The decomposition of ozone into stable oxygen is accelerated by surfaces that act as substrates and / or reaction sites for the decomposition process.
    The remaining gas flow is passed through a VOC filter where the airflow preferably should be at a speed of or below 2 m / s.
    Air leaving the ozone decomposition can be subjected to a source (eg electrostatic plates) which provide the molecules, particles and droplets with an electric charge that allows the removal of the same with an electrostatic filter. In a preferred embodiment, the electric charge is a DC voltage. The charged molecules, particles and droplets will then be drawn to the opposite pole plate in the precipitator. It is preferred that the velocity of the air inlet is lowered to below 2 m / s, more preferred to below 1.5 m / s and even more preferred that the velocity is 1 m / s.
    It may be that loading the particles optimizes the capture of the aerosol particles because of the agglomeration of oppositely charged particles which increases the particle size and the presence of charge optimizes the particle growth thermodynamics. The heaviest combined particles can precipitate (fall) out of the air when two smaller particles agglomerate.
    [0055] Any electrostatic precipitator may be used in the present invention. An electrostatic precipitator is a particulate collection device, which removes particles from a gas that flows (such as air) through the use of force from an induced electrostatic charge. Electrostatic precipitators are highly efficient filtration devices that minimally impede gas flow and can efficiently remove fine particulate matter, such as smoke or dust from the air stream.
    Minor particles, which are not heavy enough to precipitate, are forced out through electrostatic filtration. The electrostatic filtering comprises charged positive and negative charge metal plates wherein the positive aerosol particles accelerate towards the negative plates and the negative aerosol particles accelerate towards the positive plates. The addition of moisture, ammonia and / or other agents to the incoming air increases the efficiency of catching pollution and pollution oxidation products through the mechanism of aerosol growth.
    The electrostatic precipitation time and filtration time is defined by the number of cycles required to remove> 95% of the particulates carried by the air. Said time depends on several factors which include the type of contamination and temperature, preferably the time does not exceed 30 minutes, more preferably the time is less than 5 minutes.
    [0058] This complete disinfection process continues until the safe values for normal use of the plant or equipment are achieved. The complete disinfection time may vary, but is preferably from 60 to 90 minutes. Time is calculated to be a safe time for complete disinfection.
    In a preferred embodiment of the invention, it may be an advantage to have a disinfecting unit movable to disinfect the plant or equipment, wherein the mobile disinfection unit comprises at least one first inlet pipe arranged for the intake of air to from the plant or equipment for the treatment step, at least one second inlet pipe arranged for the admission of air from the plant or equipment for the withdrawal step, at least one outlet pipe arranged to communicate with at least one first and / or second inlet pipe, a water tank in communication with at least one outlet pipe, means for producing ozone in communication with at least one outlet pipe, at least one sensor for detecting at least one parameter in the installation or equipment is selected from the group of ozone concentration, temperature, relative humidity, concentration of one or more a combination of said parameters, means for automatically controlling the operation of the mobile disinfection unit, and that said at least one second inlet pipe comprises a catalytic converter device arranged to decompose ozone, a VOC filter arranged to remove bacterial viruses and other contaminants and an electrostatic filter arranged to remove molecules, particles, droplets, smoke and dust.
    It is a considerable advantage if the mobile disinfection unit comprises a catalytic converter device arranged to decompose ozone, a VOC filter arranged to remove bacterial viruses and other contaminants and an electrostatic filter arranged to remove molecules, particles, droplets, smoke and dust. The electrostatic filter may preferably be combined with electrostatic plates to provide the remaining molecules, particles and droplets with an electrostatic charge and precipitator for removal of charged molecules, particles and droplets. The catalytic converter device is, as previously described, a preferred step for removal of residual ozone. The use ensures that ozone is removed to prevent hazardous concentrations of residual ozone from being left in the facility or equipment to cause damage to the staff. The VOC filter and the electrostatic plates, precipitator and filter are very useful for removing contaminants left intact by the treatment process. It is very preferred that such contaminants are also removed and not only the ozone, but also the staff who first enter the facility after the disinfection process is completed would otherwise be exposed to the contaminants at a relatively high concentration present before that the installation or equipment has been properly ventilated.
    It is advantageous if the mobile disinfecting unit comprises means for circulating air both from the at least first and the second inlet apertures to at least one outlet aperture. Preferably, said air circulation means is an air blower placed in the at least one outlet pipe as this provides a simple and economical unit. However, other air circulation means, as well as other locations of said air circulation means, are also contemplated within the scope of the present invention. Circulating the air in the plant or equipment of the at least one inlet pipe to the at least one outlet pipe also ensures that the exact ozone concentration can be continuously monitored by an ozone sensor, rather than just measuring the ozone concentration close to the mobile disinfection unit without circulating the air, which would give an imprecise value. The means for circulating the air to be cleaned also make it easier for the ozone and water / vapor droplets to be expelled with a high velocity into the plant or equipment, thereby reducing treatment time.
    The mobile disinfection unit may further comprise at least one valve arranged to control the communication between the at least one outlet tube and both the at least one first and the second inlet tube. The valve may facilitate that the treatment and withdrawal process be completely separated from one another and thus, for example, not risk decomposing a portion of the ozone during the treatment process. The valve can furthermore simplify the structure of the mobile disinfection unit, as less piping is required. In a simple and inexpensive embodiment, a motor valve is used, however, other valves for opening and closing the flow between the at least one first and second inlet pipe and that, at least one outlet pipe is also contemplated within the scope of the present invention.
    It is preferred that the water tank is arranged to provide droplets of water and / or steam to the at least one outlet pipe. As described above, water and / or steam droplets may be produced by, for example, heated water, miniature spray nozzles or by high frequency stirrers. Providing water in this way ensures that moisture is increased rapidly in the plant or equipment, which is relevant in that moisture is important for conglomeration and rapid disinfection. In addition, providing water / steam droplets to the at least one outlet pipe rather than liquid water facilitates faster mixing with the ozone prior to being expelled to the facility or equipment.
    The water tank may furthermore be arranged to operate both with tap water and with ionized water, depending on the type and level of contaminants and the source of water at disposal. The ionized water may have a high pH, preferably a pH of about 9 to 10. Tests have shown that ionized water with a high pH results in a faster and better decomposition of the contaminants. The mobile disinfection unit thus provides extra flexibility in terms of locations to be operated and in the case where tap water is used, it reduces costs.
    In one embodiment the mobile disinfection unit may comprise a condensing device (dehumidifier). Advantageously, the condensing device is installed in the at least one inlet pipe. Said condensing device may be arranged to condense remaining water and / or vapor droplets in the plant or equipment after the treatment and removal processes and to store said droplets of water and / or condensed vapor in the water tank. The water collected by said condensing device can thus be reused in a new disinfection process, which results in lower costs, simpler operation and faster use of the plant or equipment after the operation, as moisture has been removed during the disinfection process and thus do not have to be removed, for example by opening a window or restarting a vent for the plant or equipment after the disinfection process.
    It is advantageous that the means for controlling the operation of the mobile disinfection unit is a Programmable Logic Controller (PLC). The CLP gives the operator of the mobile disinfection unit the ability to perform the treatment and removal processes automatically in continuation. The mobile disinfection unit may thus be programmed to first perform the treatment step for the required time until a predefined ozone concentration has existed for a predefined time interval and then perform the removal step while the operator simply follows the disinfection process, for example, on a portable computer, safely off-site. However, other means for controlling the unit are also contemplated within the scope of the present invention.
    It is further advantageous that the at least one outlet pipe is arranged to communicate with the first or second inlet pipe in a three-way pipe system. Having at least one outlet tube arranged to communicate with both the first and second inlet tubes facilitates that the treatment process can be separated from the withdrawal process. In the treatment process the objective is to expel, for example, the ozone for the installation or equipment to react with the contaminants, and in the removal process the objective is to remove residual ozone and contaminants. By separating the inlet air stream into two separate tubes, the risk of accidentally removing, for example, ozone from the air stream prior to complete decomposition of the contaminants, is eliminated.
    In one embodiment, it may be an advantage if the mobile disinfection unit comprises two separate tube systems. That is, two tube systems characterized in that a first outlet tube is arranged to communicate with the first inlet tube and a second outlet tube is arranged to communicate with the second inlet tube. Thus, having two completely separate tube systems ensures a complete separation of the treatment process from the removal process. In addition, in case one of the pipe systems needs repairs, the other pipe system is thus not affected. In addition, having two separate tube systems facilitates that the characteristics used in the treatment process may be placed at a distance from the components used in the removal process. This could be an advantage if the mobile disinfection unit has to be used in an installation or equipment of dimensions requiring special dimensions of the mobile disinfection unit, special dimensions which can only be obtained by separating the components used in the treatment process of the components used in the removal process.
    Preferably, the catalytic converter device and the VOC filter both have a shape as a hive (hexagonal shape), as the shape as a hive reduces the total pressure drop. The lower pressure drop results in that the total energy consumption used by the mobile disinfection unit is reduced, thereby reducing operating expenses.
    In another embodiment, the mobile disinfection unit may be placed in a pipeline system connected to the plant or equipment to be disinfected. The mobile disinfection unit can thus disinfect both the plant or equipment and the pipeline system. The mobile disinfection unit may be placed at a central point in the pipeline system and the ozone produced and droplets of water and / or steam will then be transported through the pipeline system to the plant or equipment. After the treatment process is completed, the removal process will remove residual ozone and contaminants.
    The method of carrying out the present invention and the structure of the preferred mobile disinfecting unit for use in the method will be described in more detail below with reference to exemplary embodiments shown in the drawings, wherein, Figure 1 shows a perspective view of the preferred embodiment of the mobile disinfection unit with three side panels removed, Figure 2 shows a flowchart for performing the treatment process, and Figure 3 shows a flow chart for performing the removal process .
    In the figures the mobile disinfection unit is shown and described in a square format. However, it should be understood that other shapes, such as a sphere, multi-sided and triangular shapes are also intended within the scope of the present invention. Further, one skilled in the art will appreciate that the illustrated combination of the different parts of the mobile disinfection unit is not to be understood as complete and that the combination may be formed in many different ways.
    Figure 1 shows a perspective view of the preferred embodiment of the mobile disinfection unit 1. The mobile disinfection unit 1 has an outer structure with a square shape. The outer frame comprises a square frame 2 to support the different parts of the mobile disinfection unit 1. Said frame is preferably produced from metal or plastic and in the embodiment shown comprises six vertically extending rod members 3a, 3b, 3c, 3d, 3e, 3f (3f not shown) and two horizontally extending rod members 3a ', 3b', which support four horizontally extending upper rod members 4a, 4b, 4c, 4d, which together form a square and four lower horizontally extending leg members 5a, 5b, 5c, 5d, which also form a square. A first 6 and a second cable 7 can be positioned at the uppermost end of the rod members 3c and 3d to facilitate moving the mobile disinfection unit 1. The square frame 2 carries four side panels 8a, 8b, 8c, 8d, 8b, 8c, 8d have been removed for clarity) and a top panel 9. Said panels will ensure that the unit according to the invention appears as an enclosed integrated unit.
    Within the square frame 2 a three-way tube system is placed. The three-way pipe system is composed of a first 10 and a second inlet pipe 11 and an outlet pipe 12. The first inlet pipe 10 is arranged for the intake of air from the plant or equipment and has in one ends a first inlet aperture 13 which penetrates a side panel 8b to open the surrounding air. The second inlet pipe 11 is arranged to admit air to be cleaned from the plant or equipment and has a second inlet port 14 (not shown) for opening into the surrounding air. The outlet pipe 12 is connected either to the first 10 or to the second inlet pipe 11, through the use of a valve 31 (not shown), preferably a motor valve, placed at the intersection of tubes of the three-way tube system . The outlet pipe 12 has an outlet port 15 which penetrates the top panel 9 to open the surrounding air.
    In the outlet pipe 12 an air blower 16 is placed. The air blower 16 circulates the air from the vicinity or through the first inlet port 13 to the outlet port 15, or through the second inlet port 14 to the outlet port 15, depending on whether a treatment process or a process is executed.
    The loaded metal plates 17 may also be placed in the outlet pipe 12 to add negative ions or electric charge to the flow.
    A square box 18, mounted on the two horizontally extending rod members 3a ', 3b', comprises four side panels 19a, 19b, 19c, 19d (19b, 19c, 19d not shown), an upper panel 20 and a lower panel 21 (not shown). The square box 18 is divided into three parts. The first part comprises a water tank 22, which is connected to the outlet pipe 12, thereby providing droplets of water and / or steam to the air flowing in the outlet pipe 12. The second part comprises a means for producing ozone 23 The ozone producing means 23 is connected to the outlet pipe 12 in this manner capable of supplying ozone to the air flowing in the outlet pipe 12. In the third part of the square casing 18 a PLC 24 is installed to automatically control the process for example, the addition of water / vapor and ozone droplets to the air flow, depending on the ozone concentration and the removal process. The CLP can be monitored from a computer placed outside the facility or equipment.
    In position adjacent the second inlet aperture 14, a sensor 25 (not shown) for monitoring the ozone concentration is placed. Ozone monitoring is used to control the emission of moisture and ozone to the plant or equipment and to calculate the total time of treatment and disinfection.
    In relation to the second inlet pipe 11, first a catalytic converter device 26 is installed, arranged to remove residual ozone after the treatment process. Following the catalytic converter device 26, a VOC filter 27 removes bacterial viruses and other contaminants. The stream is now exposed to electrostatic plates 28, thereby providing molecules, particles and droplets with a remaining electric charge, the charged molecules, particles and droplets being removed in an electrostatic precipitator 29. Finally, the remaining minor particles are removed in an electrostatic filter 30, which comprises charged metal plates.
    Figure 2 shows a flow chart for performing the treatment process. After starting the treatment process, the means for circulating the air 16 is started and air flows from the first inlet pipe 10 to the outlet pipe 12. The means for circulating the air 16 is preferably executed during the process of complete treatment. Numerous steps performed in a continuous loop are now started. The steps are not necessarily initiated simultaneously, however preferably they are. The steps comprise the addition of water and / or vapor and ozone droplets to the outlet pipe 12. However, negative ions or an electric charge are added to the flow before being exhausted into the surrounding air. Throughout the treatment process a sensor 25 measures the concentration of ozone in the facility or equipment and thereby provides information to the CLP 24 to calculate disinfection and treatment time which can be monitored by the operator on a computer placed outside the facility or equipment. As long as the predetermined ozone concentration is not reached, the cycle continues. The pre-set ozone concentration may be 15 ppm in a preferred embodiment. When the predefined ozone concentration is obtained, the predefined ozone concentration should be maintained for a preset time, t, which in the present case is 45 minutes, i.e., when the ozone concentration is 15 ppm. In case the ozone concentration drops below the preset value before it is reached, the CLP 24 ensures that the ozone concentration rises again. After iteration of the steps described a number of times, the predefined ozone concentration has been maintained for time t and the treatment process is stopped unless the treatment time exceeds a predefined maximum treatment time. In this case, the treatment process is stopped before complete disinfection.
    Figure 3 shows a flow chart for performing the removal process. After starting the removal process, the means for circulating air 16, for example, an air blower 16, is started and changes the direction of air to flow from the second inlet pipe 11 to the outlet pipe 12. The medium to circulate the air 16 is performed during the entire removal process. As is the case for the treatment process, several steps performed in a continuous cycle are started. The steps comprise first exposing the air to be cleaned to a catalytic converter device 26 and thereby removing the residual ozone. After the catalytic converter device 26, a VOC filter 27 removes bacterial viruses and other contaminants. The remaining small molecules, particles, droplets and particles are removed by a combination of electrostatic plates 28, electrostatic precipitator 29 and electrostatic filter 30. Throughout the treatment process a sensor 25 measures the concentration of ozone in the plant or equipment and from that form provides information to CLP 24 to calculate disinfection time, which can be monitored by the operator on a computer placed outside the facility or equipment. While the ozone concentration is not below a preset lower value, the cycle continues. After the lower default value is reached the removal process is interrupted.
    The unit and method according to the invention has a simple and cheap design and can therefore be used equally well for both hospital or medical facilities and private facilities where known disinfection units are very problematic and complicated to use.
    Modifications and combinations of the above principles and models are provided within the scope of the present invention.
    权利要求:
    Claims (16)
    [1]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment, wherein the mobile disinfection unit (1) comprises at least one first inlet pipe arranged for the admission of air from the plant or equipment to a step at least one outlet pipe (12) arranged to communicate with or at least one first (10) of the at least one inlet pipe arranged for an air intake from the plant or equipment for the withdrawal step, or second inlet pipe (11). a water tank (22) in communication with the at least one outlet pipe (12), means for producing ozone (23) in communication with the at least one outlet pipe (12), optionally means for adding negative or (25) for detecting the concentration of ozone in the plant or equipment and optionally an additional parameter in the plant or equipment, wherein said additional parameter is selected from the group temperature, relative humidity, concentration (24) for controlling the operation of the mobile disinfection unit (1), said second inlet tube comprises a VOC filter (27) arranged to remove bacterial viruses and characterized in that said at least one second inlet pipe further comprises a catalytic converter device (26) arranged to decompose ozone, and an electrode filter (30) arranged to remove molecules, particles, droplets, smoke and dust.
    [2]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to claim 1, characterized in that the mobile disinfection unit (1) further comprises electrostatic plates (28) for supplying the molecules with particles and droplets remaining an electric charge and an electrostatic precipitator (29) to remove charged molecules, particles and droplets.
    [3]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 2, characterized in that the mobile disinfection unit (1) further comprises a means for circulating air ( 16) of at least one first (13) or second inlet port (14) to at least one outlet port (15).
    [4]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to claim 3, characterized in that said means for circulating air (16) is an air blower (16) placed in the hair less an outlet tube (12).
    [5]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 4, characterized in that the mobile disinfection unit (1) comprises at least one valve (31) disposed for controlling the communication between the at least one outlet pipe 12 and the first or second inlet pipe 11.
    [6]
    A mobile disinfection unit (1) for disinfecting a given plant or apparatus according to any one of claims 1 to 5, characterized in that the water tank (22) is arranged to provide water droplets and / or to the at least one outlet pipe (12).
    [7]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 6, characterized in that the water tank can operate on both tap water and ionized water.
    [8]
    Mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 7, characterized in that the means (24) for controlling the operation of the mobile disinfection unit (1) is a Programmable Logic Controller (CLP) (24).
    [9]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 8, characterized in that a relative humidity level above 50% at ambient temperature is applied.
    [10]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 9, characterized in that the at least one outlet pipe (12) is arranged to communicate with the first (10) or second inlet pipe (11) in a three-way pipe system.
    [11]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 10, characterized in that a first outlet pipe is arranged to communicate with the first inlet pipe ( 10) and a second outlet tube is arranged to communicate with the second inlet tube (11).
    [12]
    A mobile disinfection unit (1) for disinfecting a given plant or equipment according to any one of claims 1 to 11, characterized in that the catalytic converter device (26) and / or the VOC filter ( 27) is shaped like a hive.
    [13]
    A method of disinfecting a given plant or apparatus as a space, apparatus, container or vehicle by means of a mobile disinfection unit (1) as defined in any one of claims 1 to 12, characterized in that the method comprises a treatment step arranged to add ozone and water and / or vapor droplets to the air of the plant or equipment, continuously detecting the ozone concentration in the plant or equipment, a withdrawal step arranged to remove residual ozone and contaminants such as both end products and by-products present after the treatment step as well as inorganic material, such as carbon monoxide and cigarette smoke, organic compounds such as pollen, as well as living organisms such as viruses, spores and bacteria from the plant or equipment when the predefined ozone concentration was achieved and maintained for a specific time interval.
    [14]
    A method according to claim 13, characterized in that the method further comprises continuously detecting an additional parameter in the plant or equipment, said parameter being selected from the group of temperature, relative humidity, concentration of one or more contaminants, or a combination of said parameters.
    [15]
    A method according to claim 13 or 14, characterized in that the treatment process comprises: circulating the air (16) to flow from a first inlet opening (13) to an outlet opening (15), producing droplets of water and / or steam and adding droplets of water and / or steam to the air stream to facilitate the formation of hydroxyl radicals, producing and mixing ozone molecules with droplets of water and / or vapor in the air stream, optionally add negative ions or electric charge to the mixture, release the mixture to the plant or equipment, calculate the treatment and disinfection time, adjust both water / vapor droplet concentrations and ozone to meet the calculated treatment time, or adjust the treatment time if the predefined ozone level can not be reached in the calculated treatment time, interrupt the production and release of water / vapor and ozone droplets for u equipment after the treatment time has elapsed.
    [16]
    A method of disinfecting a given plant or apparatus according to claim 15, characterized in that it comprises the method of removing in a first circular step the air (16) to flow from a second inlet opening (14) to an outlet opening (15), in a second step exposing the inlet flow to a catalytic converter device (26) comprising one or more ozone removal catalysts for removal of residual ozone, in a third step exposing the flow to a volatile organic compound (VOC) filter (27) composed of titanium dioxide irradiated with ultraviolet (UV) radiation to remove bacterial viruses and other contaminants, in a fourth step exposing the flow to electrostatic plates (28) and to provide the remaining molecules, particles and droplets with an electric charge, in a fifth step exposing the flow to an electrostatic precipitator (29) for removal of the molecules, particles and charged droplets, in a sixth step exposing the flow to an electrostatic filter (30) comprising charged metal plates for removal of any remaining minor particles.
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    同族专利:
    公开号 | 公开日
    WO2013110782A1|2013-08-01|
    AP2014007817A0|2014-07-31|
    US20150017059A1|2015-01-15|
    JP2015509758A|2015-04-02|
    DK2806903T3|2018-03-19|
    JP6060245B2|2017-01-11|
    CA2861278A1|2013-08-01|
    EP2806903B1|2017-12-13|
    EP2620164A1|2013-07-31|
    AU2013213528A1|2014-08-07|
    AP3912A|2016-11-26|
    CN104114196A|2014-10-22|
    HK1204583A1|2015-11-27|
    CA2861278C|2021-01-12|
    IN2014DN06687A|2015-05-22|
    EA201491422A1|2014-11-28|
    JP2016120278A|2016-07-07|
    AU2013213528B2|2016-02-25|
    CN104114196B|2017-05-24|
    EA026778B1|2017-05-31|
    US9233182B2|2016-01-12|
    EP2806903A1|2014-12-03|
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    法律状态:
    2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-01-15| B06T| Formal requirements before examination|
    2019-04-09| B09A| Decision: intention to grant|
    2019-06-25| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/01/2013, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/01/2013, OBSERVADAS AS CONDICOES LEGAIS |
    优先权:
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    EP12152733.7A|EP2620164A1|2012-01-26|2012-01-26|A method for disinfecting a given facility or equipment and a mobile disinfection unit for use in the method|
    EP12152733.7|2012-01-26|
    PCT/EP2013/051493|WO2013110782A1|2012-01-26|2013-01-25|A mobile disinfection unit for disinfecting a given facility or equipment and a method of using said unit|
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