• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for cooling and moistening the air of an enclosure, the device (1) comprising a fogging head (2) for expelling a nebulizing liquid and a chamber (3). ) decontamination supplied with nebulizing liquid, characterized in that the decontamination chamber (3) is delimited by a wall (5) which is in contact with the head (2) of nebulization, so as to leave no space for stagnation of the liquid between the decontamination chamber (3) and the nebulization head (2).
    公开号:FR3030020A1
    申请号:FR1462394
    申请日:2014-12-15
    公开日:2016-06-17
    发明作者:Yvan Lechat
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] This invention relates to a device for cooling and humidifying the air of an enclosure. A cooling and humidification device provides, on the one hand, an optimal humidity level in an enclosure and, on the other hand, an improvement in the cooling of the air, for example in addition to an air conditioner. For this purpose, the device nebulizes water in the enclosure. The nebulizing water is expelled, usually by a misting head. The microdrops of water thus emitted evaporate almost instantaneously by causing a lowering of the temperature in the chamber due to the latent heat of vaporization absorbed. Such a device is particularly suitable for cooling and humidifying a passenger compartment of a motor vehicle. Subsequently, the enclosure is considered to be a vehicle interior. Often, the water used as nebulizing liquid comes from a conduit or a reservoir in which can accumulate germs, such as bacteria. However, the microdrops of water expelled by the nebulization device can carry these germs and they can easily be inhaled by the occupants of the cabin. Therefore, it is important to be able to decontaminate the nebulization water before being expelled into the passenger compartment. This decontamination can be accomplished, for example, by exposing the nebulizing liquid to a high temperature over a period of time. However, there is a risk that all the nebulized liquid is not decontaminated. This may be the case in particular when the already decontaminated liquid is stagnant in a conduit or a reservoir downstream of the decontamination site and upstream of the nebulizing head during a period of stopping of the device, during which the decontaminated liquid 30 previously can be contaminated again by the proliferation of germs in this conduit or reservoir. When the device restarts, this contaminated liquid can then be nebulized. 3030020 2 It is therefore necessary to have a device for cooling and humidifying the air of an enclosure ensuring the decontamination of all the expelled nebulization liquid during the entire operating period of the device.
    [0002] To meet this objective, the invention firstly relates to a device for cooling and moistening the air of an enclosure, the device comprising a nebulizing head for expelling a nebulizing liquid and a decontamination chamber fed with nebulizing liquid preferably by at least one inlet duct. The decontamination chamber is delimited by a wall which is at least partially in contact with the nebulizing head, so as to leave no stagnation space of the liquid between the decontamination chamber and the nebulizing head. This means that the chamber and the head are in direct contact. Indeed, the decontamination chamber and the nebulizing head form a solidarity assembly, these two elements being arranged side by side without space between them. In this way, the nebulizing liquid is nebulized directly after being decontaminated in the decontamination chamber. There is no distance to go through the liquid between decontamination and nebulization. Thus, during a restart of the device, the liquid having stagnated in the chamber, directly upstream of the nebulizing head, is decontaminated before being nebulized. The risk of the nebulization of undecontaminated liquid is entirely eliminated, all the nebulized liquid being decontaminated. According to one embodiment of the invention, the enclosure is the passenger compartment of a motor vehicle. The nebulizing liquid can thus be a condensate of a heat exchanger such as an evaporator of an air conditioning system of the motor vehicle. Thanks to the device according to the invention, the occupants of the vehicle can then benefit from optimal humidification of the air in the passenger compartment. In addition, for occupants of the seats at the rear of the vehicle, where the air conditioning system is generally less effective in ventilating chilled air, cooling is greatly improved.
    [0003] According to one embodiment, the decontamination chamber is a heating chamber. Advantageously, the external heating means is adapted to heat the nebulizing liquid in the decontamination chamber at a temperature of at least 80 ° C. At this temperature, most of the germs contained in the nebulizing liquid are removed. The nebulized liquid, for example in the passenger compartment of a motor vehicle, is then of sufficient sanitary quality not to contaminate the air in the enclosure. Preferably, the wall of the heating chamber is a heat conductive material, and the wall is heated by external heating means. The nebulizing liquid is heated to the desired temperature by the wall which distributes the heat emitted by the external heating means around the volume of the nebulizing liquid, which makes the heating more rapid and efficient. Also, in case of failure of the external heating means, it can be repaired or replaced easily. Advantageously, the external heating means comprises a PTC heating stone. For example, the wall of the heating chamber may be of a heat and electricity conductive material, and the PTC heating stone may be placed between a first electrode and the wall which serves as a second electrode. According to various embodiments of the invention, which can be taken together or separately: the PTC stone is placed on the wall of the chamber, the heat produced by the PTC stone being conducted by the wall of the chamber and thus transmitted the nebulizing liquid contained in the chamber; the PTC stone is supplied with electricity by two electrodes; the first electrode is placed directly on the CTP stone; the first electrode is electrically insulated from the second electrode by an insulating piece made of plastic material; 3030020 4 - the PTC stone, the first electrode and the insulating part are held in place on the wall of the heating chamber by the second electrode which surrounds the whole; the second electrode acts as a spring terminal for electrically contacting the wall of the chamber, the wall being both in contact with the PTC stone and the second electrode, the wall having the function of the second electrode for feeding the stone; CTP; the electrodes each comprise a tongue allowing the electrodes to be contacted with electrical wires; The first electrode is connected to + 12 V of the low voltage battery of the vehicle, and the second electrode is connected to ground. According to one embodiment, the external heating means comprises a resistive element. The resistive element may, for example, consist of a coil of heating conductor wound around the decontamination chamber. Such elements have a high mechanical strength and a long service life. Advantageously, the external heating means also comprises a nebulization liquid temperature sensor in the decontamination chamber, the sensor being connected to a control circuit 20 in order to keep the temperature of the nebulizing liquid above a predetermined value. . According to one embodiment, the nebulizing head is of piezoelectric type. This type of head is particularly economical in energy consumption, and its operating noise is very low.
    [0004] Preferably, the wall of the decontamination chamber is aluminum. Aluminum meets the requirement of weight reduction, which is particularly important, especially in the automotive field. Advantageously, the decontamination chamber is also connected to a discharge pipe of the nebulizing liquid. In the case where the nebulizing head is of the piezoelectric type, it is capable, by the rapid vibration of its membrane, of producing air bubbles in the nebulizing liquid. This liquid can then be removed from the decontamination chamber and replaced with liquid free of air.
    [0005] The subject of the invention is a system for cooling and humidifying the air of an enclosure, the system comprising a device according to the first subject of the invention and a reservoir of nebulizing fluid connected to said device by at least one arrival duct.
    [0006] The invention and the advantages it provides will be better understood from the following description of nonlimiting examples of implementation of the invention, with reference to the appended figures, in which: FIG. in perspective of a device for cooling and humidifying the air according to an embodiment of the invention, and FIG. 2 shows a side view, in section, of the device according to the embodiment of FIG. Subsequently, it is considered a device for cooling and humidifying the air for an automobile vehicle. The cabin of the vehicle is taken as an example for any other possible enclosure. Figure 1 shows a device for cooling and humidifying the air according to an embodiment of the invention in perspective. Figure 2 shows a sectional side view of this embodiment of the device. Subsequently, reference is made to both figures. The device 1 for cooling and humidifying the air comprises a fogging head 2 and a decontamination chamber 3. In the embodiment shown, the decontamination chamber 3 is a heating chamber 3. The heating chamber 3 is delimited by a substantially cylindrical wall 30. The wall 5 of the chamber 3 is made of a material which is both a thermal conductor and an electrical conductor. It is preferably metal, and more preferably aluminum. The heating chamber 3 contains a nebulizing liquid that can be expelled by the spray head 2. The nebulizing liquid is preferably water. According to the invention, the wall 5 of the decontamination chamber 3 is in contact with the nebulizing head 2. This means that the heating chamber 3 and the nebulizing head 2 form a solid assembly, the chamber 3 being directly attached to the nebulizing head 2. Thus, the nebulizing liquid in the chamber 3 is directly nebulized after being heated. Upstream of the nebulization, the liquid does not travel a distance during which it could be contaminated again after being decontaminated, especially in the case of a shutdown of the device. Thus, all the nebulized liquid is decontaminated.
    [0007] More particularly with reference to FIG. 2, the nebulizing head 2 comprises a reception zone 2a of the nebulizing liquid through which the nebulizing liquid enters the head 2. The head 2 also comprises a nebulization zone 2b from which the liquid is expelled. The heating chamber 3 is fixed to the fogging head 2 by means of two O-rings 14, 15. The O-rings 14, 15 are placed on the wall of the reception zone 2a, which is entirely inserted into the heating chamber 3. The wall 5 of the heating chamber 3 abuts on a shoulder 2c of the nebulizing head. O-rings 14, 15 are, for example, synthetic rubber. They seal between the heating chamber 25 3 and the spray head 2. The nebulizing head 2 is preferably of the piezoelectric type. In this type of nebulizer, a piezoelectric transducer (not shown) vibrates a perforated membrane 13. The perforated membrane 13 is at the end of the nebulization zone 2b of the head 2 and constitutes a barrier between the liquid and the air of the enclosure. As the nebulizing liquid is in contact with the vibrating membrane 13, the latter is expelled through the perforations towards the outside of the head 2. Microdroplets are then created. They have a diameter, for example, of about 5 - 10 amps. The vibration frequency of the membrane 13 is a few tens of kHz. The size of the microdroplets and the expulsion rate are adjustable according to the specificities of the enclosure concerned and the nature of the nebulizing liquid.
    [0008] In the embodiment shown in FIGS. 1 and 2, the heating chamber 3 is supplied with nebulizing liquid via an inlet duct (not shown). The inlet duct is connected to the heating chamber 3 by a first sleeve 11. The nebulizing liquid may come from a reservoir (not shown) provided for this purpose and independent of any other circuit or unit of the vehicle. Alternatively, the nebulizing liquid may also come from a heat exchanger such as an evaporator of an air conditioning system (not shown) of the vehicle in which water has condensed. The system for cooling and humidifying the air of an enclosure according to the invention comprises the device 1 according to the invention and a reservoir of nebulizing liquid connected to the device 1 by at least the inlet duct. Referring to Figures 1 and 2, the heating chamber 3 is heated by a stone 4 positive temperature coefficient (PTC) (called PTC stone thereafter) as an external heating means. The PTC stone 4 is placed on the wall 5 of the chamber 3. The heat produced by the CTP stone 4 is conducted by the wall 5 of the chamber 3 and thus transmitted to the nebulizing liquid contained in the chamber 3. The CTP stone 4 is supplied with electricity by two electrodes 6, 7. The first electrode 6 is placed directly on the CTP stone 4. The first electrode 6 is electrically insulated from the second electrode 7 by an insulating piece 8 made of plastic material. The PTC stone 4, the first electrode 6 and the insulating part 8 are held in place on the wall 5 of the heating chamber 3 by the second electrode 7 which surrounds the whole and holds the elements 4, 6, 8 in place. The second electrode 7 acts as a spring terminal for electrically contacting the wall 5 of the chamber 3, the wall 5 being both in contact with the PTC stone 4 and the second electrode 7. Thus, the wall 5 has the function of the second electrode for feeding the CTP stone 4. The electrodes 6, 7 3030020 8 each comprise a tongue 9, 10 allowing the electrodes 6, 7 to be contacted with electrical wires (not shown). For example, the first electrode 6 is connected to + 12 V of the low-voltage battery of the vehicle, and the second electrode 7 is connected to ground.
    [0009] Alternatively, the external heating means may comprise a resistive element (not shown). The resistive element may, for example, be constituted by a heating conductor wire wound around the heating chamber 3, the wall 5 of which is made of a material that conducts heat.
    [0010] Advantageously, the external heating means also comprises a temperature sensor (not shown). This is used to measure the temperature of the nebulizing liquid in the heating chamber 3. The temperature sensor is connected to a control circuit (not shown) to keep the temperature of the nebulizing liquid above predetermined value. Preferably, the predetermined value of the temperature of the nebulizing liquid in the heating chamber 3 is about 80 ° C. At this temperature, most of the germs in the nebulizing liquid are removed. In addition, the water does not undergo a change of phase, so that the water can evaporate once nebulized in the passenger compartment. Several types of cycles or heating loops are possible. For example, the liquid may be periodically heated to about 90 ° C under control of the control circuit. After stopping the heating, the liquid temperature lowers, and when it reaches about 80 ° C, the heating is turned on to heat the liquid to about 90 ° C, and so on. The nebulizing liquid is expelled hot. The microdroplets evaporate almost instantly. Thus, there is no risk of an unpleasant sensation or burning for occupants of the passenger compartment. The value of the latent heat absorbed during evaporation is large compared to the value of the thermal energy contained in the nebulized liquid.
    [0011] According to the embodiment shown in Figures 1 and 2, the heating chamber 3 is connected to a discharge duct (not shown) of the nebulizing liquid. The exhaust duct is connected to the heating chamber 3 by a second sleeve 12. When a piezoelectric nebulization head 2 is used, the rapid vibration of the membrane 13 of the head 2 can lead to the introduction of bubbles. air in the nebulizing liquid. The liquid containing the air bubbles can then be evacuated through the exhaust duct, and air-free liquid can be reintroduced into the heating chamber 3 through the supply duct. The efficiency of the nebulization 10 is thus increased. The device and system according to the present invention are also suitable for nebulizing other liquids than water for humidification and cooling. For example, it is conceivable to nebulise room perfumes or deodorants in enclosures such as the passenger compartment of a vehicle.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Device (1) for cooling and humidifying the air of an enclosure, the device (1) comprising a fogging head (2) for expelling a fogging liquid and a decontamination chamber (3) supplied with liquid from nebulization, characterized in that the decontamination chamber (3) is delimited by a wall (5) which is at least partially in contact with the nebulizing head (2), so as to leave no space for stagnation of the liquid between the decontamination chamber (3) and the nebulizing head (2).
    [0002]
    2. Device (1) according to claim 1, wherein the chamber (3) of decontamination is a heating chamber (3).
    [0003]
    3. Device (1) according to claim 2, wherein the wall (5) of the heating chamber (3) is made of a heat-conducting material, and the wall (5) is heated by means (4, 6, 7) external heating.
    [0004]
    4. Device (1) according to claim 3, wherein the means (4, 6, 7) for external heating comprises a heating stone (4) PTC effect.
    [0005]
    5. Device (1) according to claim 4, wherein the wall (5) of the heating chamber (3) is made of a material conducive to heat and electricity, the heating stone (4) PTC effect being placed between a first electrode (6) and the wall (5) which serves as a second electrode.
    [0006]
    6. Device (1) according to claim 3, wherein the external heating means comprises a resistive element.
    [0007]
    7. Device (1) according to one of claims 3 to 6, wherein the means (4, 6, 7) for external heating is adapted to heat the nebulizing liquid in the heating chamber (3) at a temperature of at least 80 ° C. 3030020 11
    [0008]
    8. Device (1) according to one of the preceding claims, wherein the head (2) of nebulization is piezoelectric type.
    [0009]
    9. Device (1) according to one of the preceding claims, wherein the wall (5) of the chamber (3) decontamination is aluminum. 5
    [0010]
    10.Dispositif (1) according to one of the preceding claims, wherein the decontamination chamber (3) is connected to a nebulization liquid discharge conduit.
    [0011]
    11.Dispositif (1) according to one of the preceding claims, wherein the nebulizing liquid is a condensate of a heat exchanger of a motor vehicle air conditioning system.
    [0012]
    12.A system for cooling and moistening the air of an enclosure, the system comprising a device (1) according to one of the preceding claims and a nebulization fluid reservoir connected to the device (1) by at least one arrival conduit. 15
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    同族专利:
    公开号 | 公开日
    FR3030020B1|2016-12-30|
    WO2016096272A1|2016-06-23|
    引用文献:
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    WO2012120219A1|2011-03-07|2012-09-13|Peugeot Citroen Automobiles Sa|Device for decontaminating a liquid, system for cooling air by vaporization equipped with such a device, cooling process, and associated automotive vehicle|
    FR3005721A1|2013-05-16|2014-11-21|Peugeot Citroen Automobiles Sa|AIR TREATMENT DEVICE WITH PIEZOELECTRIC ELEMENT WITH PERFORATED MEMBRANE FOR DELIVERING AIR WITH SMALL DROPS OF LIQUID|WO2018154105A1|2017-02-24|2018-08-30|Utilis|Decontamination device and method for military materiel|
    US11077221B2|2016-01-25|2021-08-03|S. C. Johnson & Son, Inc.|Volatile dispenser for use in volatile dispensing systems|
    US10994042B2|2016-01-25|2021-05-04|S. C. Johnson & Son, Inc.|Heated air freshener|
    US10940226B2|2016-03-01|2021-03-09|S. C. Johnson & Son, Inc.|Dispenser|
    US10850690B2|2018-01-17|2020-12-01|S. C. Johnson & Son, Inc.|Electronic devices for use in a vehicle and methods of operating the same|
    法律状态:
    2015-12-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-06-17| PLSC| Publication of the preliminary search report|Effective date: 20160617 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 3 |
    2018-01-02| PLFP| Fee payment|Year of fee payment: 4 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 6 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 7 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1462394A|FR3030020B1|2014-12-15|2014-12-15|DEVICE FOR REFRESHING AND HUMIDIFYING THE AIR|FR1462394A| FR3030020B1|2014-12-15|2014-12-15|DEVICE FOR REFRESHING AND HUMIDIFYING THE AIR|
    PCT/EP2015/076624| WO2016096272A1|2014-12-15|2015-11-13|Device for cooling and humidifying air|
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