Air Conditioning Equipment

Abstract

The air conditioning device includes a housing that forms the outer shell, a humidity adjustment unit that adjusts the humidity inside the housing, a light irradiation device that irradiates light onto an area whose humidity has been adjusted by the humidity adjustment unit, and a control device that controls the humidity adjustment unit to humidify the area and then controls the light irradiation device to irradiate light onto the area.

Description

[Technical field]

[0001] The present disclosure relates to an air conditioner having a function of sterilizing and inactivating microorganisms in the air. [Background technology]

[0002] In recent years, as houses have become more airtight, efforts have been made to reduce the energy required for air conditioning. However, as houses become more airtight, ventilation between the inside and outside of the house becomes insufficient, and condensation occurs inside the walls of the house, causing mold to grow. There have been several reported cases in which this has caused various adverse effects on residents. Since mold growth can cause allergies, measures are necessary. Here, ultraviolet rays with a wavelength of 200 nm to 350 nm act on the diffusion of bacterial protoplasm, inhibiting DNA replication and depriving bacteria of their ability to grow. In addition, ultraviolet rays have the function of destroying proteins and the like, which are substances that form cytoplasm or cell membranes, and killing bacteria or viruses. In recent years, air conditioners that inactivate bacteria, mold, viruses, and the like by irradiating ultraviolet rays have been put into practical use.

[0003] Patent Document 1 discloses a technology in which a wetting layer and a photocatalyst are provided near a heat exchanger, water is supplied to the wetting layer to humidify the room, and UV light is irradiated by a UV lamp to sterilize and inactivate the vicinity of the heat exchanger. Patent Document 2 discloses a technology in which a porous ceramic material is provided as a humidifying material, and UV light is irradiated by a UV lamp to humidify and sterilize and inactivate the air. Patent Document 3 discloses a technology in which UV light is irradiated into the air into which an aerosol has been sprayed to sterilize the air. Patent Document 4 discloses a technology in which a humidifier and an ozone generator are provided, and ozone is generated after the humidified humidity level is increased to remove bacteria and mold inside the indoor unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-255992 A [Patent Document 2] Patent Publication No. 2021-196065 [Patent Document 3] JP 2020-106182 A [Patent Document 4] JP 2008-111623 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the techniques disclosed in Patent Documents 1 to 3 use a UV lamp or LED light source that emits ultraviolet light as a light source having a sterilizing and inactivating effect to sterilize and inactivate the humidified part or the surrounding air, and although it can inactivate viruses and bacteria, it does not inactivate mold sufficiently. Also, the technique disclosed in Patent Document 4 uses ozone to inactivate viruses and bacteria, but does not inactivate mold sufficiently. Thus, the techniques disclosed in Patent Documents 1 to 4 require a large amount of light irradiation to inactivate mold.

[0006] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide an air conditioner that suppresses mold growth with a small amount of irradiation. [Means for solving the problem]

[0007] The air conditioning apparatus according to the present disclosure includes a housing that forms an outer shell, a humidity adjustment unit that adjusts the humidity inside the housing, a light irradiation device that irradiates light onto an area whose humidity has been adjusted by the humidity adjustment unit, and a control device that controls the humidity adjustment unit to humidify the area and then controls the light irradiation device to irradiate light onto the area. Effect of the Invention

[0008] According to the present disclosure, the control device controls the humidity adjustment unit to humidify the area, and then controls the light irradiation device to irradiate the area with light. By pre-humidifying the area in this way, the mycelium after germination of the spores is inactivated by irradiating it with light. Therefore, mold growth can be suppressed with a small amount of irradiation. [Brief description of the drawings]

[0009] [Figure 1] 1 is a circuit diagram showing an air conditioner according to a first embodiment. [Diagram 2] FIG. 1 is a side view showing an indoor unit according to embodiment 1. [Diagram 3] 4 is a flowchart showing the operation of the control device according to the first embodiment. [Figure 4] FIG. 2 is a diagram showing the growth cycle of mold in accordance with the first embodiment. [Diagram 5] 13 shows the results of an example of the air conditioning apparatus according to the first embodiment. [Figure 6] This is the result of a comparative example. [Figure 7] FIG. 11 is a side view showing an indoor unit according to embodiment 2. [Figure 8] 10 is a flowchart showing the operation of the control device according to the second embodiment. [Figure 9] FIG. 11 is a side view showing an indoor unit according to embodiment 3. [Figure 10] 11 is a flowchart showing the operation of the control device according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the air conditioning device of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the embodiment described below. Also, in the following drawings, including FIG. 1, the size relationship of each component may differ from the actual one. Also, in the following description, terms indicating directions are used as appropriate to facilitate understanding of the present disclosure, but these terms are for explaining the present disclosure and do not limit the present disclosure. Examples of terms indicating directions include "up", "down", "right", "left", "front" and "rear".

[0011] Embodiment 1 Fig. 1 is a circuit diagram showing an air conditioner 21 according to embodiment 1. The air conditioner 21 is a device that adjusts the air in an indoor space, and as shown in Fig. 1, is equipped with an outdoor unit 22 and an indoor unit 1. The outdoor unit 22 is equipped with, for example, a compressor 26, a flow path switching device 27, an outdoor heat exchanger 28, an outdoor blower 29, and an expansion section 30. The indoor unit 1 is equipped with, for example, a heat exchanger 31, a blower 7, and a control device 40.

[0012] The compressor 26, the flow switching device 27, the outdoor heat exchanger 28, the expansion section 30, and the heat exchanger 31 are connected by the refrigerant piping 25 to form the refrigerant circuit 24. The compressor 26 sucks in a refrigerant in a low-temperature and low-pressure state, compresses the sucked refrigerant, and discharges it as a refrigerant in a high-temperature and high-pressure state. The compressor 26 is, for example, a capacity-controllable inverter compressor. The flow switching device 27 switches the direction in which the refrigerant flows in the refrigerant circuit 24, and is, for example, a four-way valve. The outdoor heat exchanger 28 exchanges heat between, for example, outdoor air and the refrigerant. The outdoor heat exchanger 28 acts as a condenser during cooling operation and acts as an evaporator during heating operation. The expansion section 30 is a pressure reducing valve or an expansion valve that reduces the pressure of the refrigerant and expands it. The expansion section 30 is, for example, an electronic expansion valve whose opening is adjustable.

[0013] The heat exchanger 31 exchanges heat between, for example, indoor air and a refrigerant. The heat exchanger 31 acts as an evaporator during cooling operation and as a condenser during heating operation. The blower 7 is a device that sends indoor air to the heat exchanger 31.

[0014] It should be noted that the air conditioner 21 does not need to have the flow path switching device 27. In this case, the air conditioner 21 becomes a dedicated cooling machine or a dedicated heating machine.

[0015] (Indoor unit 1) 2 is a side view showing the indoor unit 1 according to embodiment 1. The indoor unit 1 has a housing 1a, a heat exchanger 31, a blower 7, an opening / closing unit 9, a filter 3, a light irradiation device 10, and a control device 40.

[0016] (Housing 1a) The housing 1a constitutes the outer shell of the indoor unit 1, and is provided with an inlet 2 and an outlet 8. The inlet 2 is an opening through which air is drawn, and is provided in the upper part of the housing 1a. The outlet 8 is an opening through which air is blown out, and is provided in the lower part of the housing 1a.

[0017] (heat exchanger 31) As described above, the heat exchanger 31 exchanges heat between the refrigerant and the indoor air. The heat exchanger 31 is divided into three parts, namely, a first heat exchanger 4, a second heat exchanger 5, and a third heat exchanger 6. The first heat exchanger 4, the second heat exchanger 5, and the third heat exchanger 6 are provided so as to surround the blower 7. The first heat exchanger 4, the second heat exchanger 5, and the third heat exchanger 6 are all of a fin tube type having, for example, a plurality of aluminum fins and a copper pipe that penetrates the plurality of fins in a serpentine shape.

[0018] (Blower 7) As described above, the blower 7 sends indoor air to the heat exchanger 31.

[0019] (Opening and closing part 9) The opening / closing unit 9 is a vane that opens and closes the air outlet 8 formed in the housing 1a. That is, the opening / closing unit 9 opens and closes the inside and outside of the housing 1a.

[0020] (Filter 3) The filter 3 purifies the air and captures bacteria, viruses, mold, airborne particles, and the like to prevent them from entering the housing 1a. The filter 3 has a structure in which polypropylene resin is formed into a mesh shape, for example. The filter 3 is provided so as to cover the suction port 2, and can be rolled up and moved.

[0021] (Light irradiation device 10) The light irradiation device 10 is provided below the filter 3 in the housing 1a. The light irradiation device 10 is, for example, an LED light source, and is arranged to irradiate light toward the filter 3 from below the filter 3. Here, the wavelength band of the light irradiation device 10 can be selected from 200 nm to 780 nm. In addition, considering the absorption characteristics of DNA of microorganisms including mold, it is preferable that the wavelength of the irradiated light is 200 nm to 280 nm, which is defined as UV-C. In this case, the efficiency of inactivating microorganisms including mold is the highest.

[0022] (Control device 40) The control device 40 controls the operation of the refrigeration cycle apparatus 100. Here, the hardware configuration of the control device 40 will be described. The control device 40 is composed of a processing circuit. The processing circuit is composed of dedicated hardware or a processor. The dedicated hardware is, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). The processor executes a program stored in the memory. The control device 40 has a memory (not shown). The memory is a non-volatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, or an EPROM (Erasable Programmable ROM), or a disk such as a magnetic disk, a flexible disk, or an optical disk.

[0023] The control device 40 controls the humidity adjustment unit to humidify the area 11, and then controls the light irradiation device 10 to irradiate the area 11 with light. Here, the area 11 refers to the area 11 whose humidity has been adjusted by the humidity adjustment unit. In the present embodiment 1, the humidity adjustment unit is the heat exchanger 31. The control device 40 humidifies the area 11 by heating or drying the water condensed in the heat exchanger 31. The heat exchanger 31, which is the humidity adjustment unit, adjusts the relative humidity of the area 11 to 70% or more. In addition, before controlling the humidity adjustment unit to humidify the area 11, the control device 40 controls the opening / closing unit 9 to block the inside and outside of the housing 1a. Furthermore, after controlling the light irradiation device 10 to irradiate the area 11 with light, the control device 40 controls the opening / closing unit 9 to open the inside and outside of the housing 1a and starts the blower 7.

[0024] (Operation mode, cooling operation) Next, the operation modes of the air conditioner 21 will be described. First, the cooling operation will be described. In the cooling operation, the refrigerant sucked into the compressor 26 is compressed by the compressor 26 and discharged in a high-temperature, high-pressure gas state. The high-temperature, high-pressure gas refrigerant discharged from the compressor 26 passes through the flow switching device 27 and flows into the outdoor heat exchanger 28 acting as a condenser, where it is heat-exchanged with outdoor air sent by the outdoor blower 29, condensing and liquefying. The condensed liquid refrigerant flows into the expansion section 30, where it is expanded and decompressed to become a low-temperature, low-pressure gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant flows into the heat exchanger 31 acting as an evaporator, where it is heat-exchanged with indoor air sent by the blower 7, evaporating and gasifying. At this time, the indoor air is cooled, and cooling is performed in the room. The evaporated refrigerant in a low-temperature, low-pressure gas state passes through the flow switching device 27 and is sucked into the compressor 26.

[0025] (Operation mode, heating operation) Next, the heating operation will be described. In the heating operation, the refrigerant sucked into the compressor 26 is compressed by the compressor 26 and discharged in a high-temperature, high-pressure gas state. The high-temperature, high-pressure gas state refrigerant discharged from the compressor 26 passes through the flow path switching device 27 and flows into the heat exchanger 31 acting as a condenser, where it exchanges heat with the indoor air sent by the blower 7, condenses and liquefies. At this time, the indoor air is warmed, and heating is performed in the room. The condensed liquid state refrigerant flows into the expansion section 30, where it expands and is decompressed to become a low-temperature, low-pressure gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant then flows into the exterior heat exchanger 28 acting as an evaporator, where it exchanges heat with the outdoor air sent by the exterior blower 29, evaporates and gasifies. The evaporated low-temperature, low-pressure gas state refrigerant passes through the flow path switching device 27 and is sucked into the compressor 26.

[0026] (Operation mode, fan operation) Next, the blowing operation will be described. In the blowing operation, only the blower 7 is operating, and the air sucked in from the suction port 2 is blown out from the air outlet 8 as it is.

[0027] (Operation mode, internal cleaning operation) Next, the inside cleaning operation will be described. In the inside cleaning operation, the area 11 inside the indoor unit 1 is humidified, and then light is irradiated from the light irradiating device 10 to the area 11. As a result, the inside of the indoor unit 1 is cleaned.

[0028] FIG. 3 is a flowchart showing the operation of the control device 40 according to the first embodiment. Next, the operation of the control device 40 will be described. As shown in FIG. 3, an air conditioning operation such as a cooling operation, a heating operation, or a fan operation is started (step S1). Thereafter, when the cooling operation, the heating operation, or the fan operation is stopped (step S2), an inside cleaning operation is started. In the inside cleaning operation, the opening / closing part 9 is opened and the indoor unit 1 is in an open state. In this state, the fan 7 operates and a water generating operation for cooling the heat exchanger 31 is performed (step S3). Specifically, an operation similar to the cooling operation is performed. By using the heat exchanger 31 as an evaporator, the air is cooled and condensation occurs in the heat exchanger 31.

[0029] When condensation occurs on the surface of the heat exchanger 31, the water generating operation is switched to the humidifying operation (step S4). At this time, the opening / closing part 9 is closed, and the blower 7 is kept operating, and the heat exchanger 31 is heated, thereby increasing the humidity inside the housing 1a. When the humidity reaches a certain value or more (step S5), the light irradiation device 10 irradiates the filter 3 with light (step S6). At this time, the filter 3 is wound up and moved, so that the entire filter 3 is irradiated with light. The irradiation amount is 5 mJ / cm2. 2After the humidity reaches 100%, the light irradiation from the light irradiation device 10 stops (step S7). Then, the opening / closing unit 9 is opened, the blower 7 is operated, and the humidity inside the indoor unit 1 decreases (step S8). If the opening / closing unit 9 is not opened and the humidity inside the indoor unit 1 does not decrease, the high-density state inside the indoor unit 1 will be maintained. This will cause mold spores remaining inside the indoor unit 1 to germinate, leading to mold growth. For this reason, step S8 is executed to suppress mold growth.

[0030] FIG. 4 is a diagram showing the growth cycle of mold according to the first embodiment. In FIG. 4, Aspergillus niger, which is said to be resistant to drying, is taken as an example of mold. After the mold grows and forms spores, it releases the spores into the air. It is known that the spores remain in a dormant state and are not inactivated even if they are placed for a long time in an environment where it is difficult for mold to grow. Here, the environment where it is difficult for mold to grow is, for example, a high temperature state of 40° C. or more, a dry state of relative humidity of 40% or less, or a low-nutrient state. When the spores determine that the surrounding environment is suitable for growth, they germinate and extend their hyphae. As the hyphae grow, the cycle of forming spores and scattering them is repeated. The temperature and humidity conditions required for germination vary depending on the type of mold, and are generally a temperature of 10° C. to 30° C. and a relative humidity of 80% or more. Incidentally, Aspergillus niger germinates at a relative humidity of 70% or more. That is, Aspergillus niger can be said to be resistant to drying as described above.

[0031] When Aspergillus niger spores were irradiated with 265 nm ultraviolet light to evaluate their inactivation performance, it was found that a UV dose of 400 mJ / cm was required to inactivate 99% of the spores. 2 Viruses or bacteria require approximately 5 mJ / cm 2 Since Aspergillus niger is inactivated by ultraviolet light, 80 times the amount of exposure to the virus or bacteria is required to inactivate it. However, it is also known that ultraviolet light can deteriorate plastic resins and have adverse effects on human eyes and skin. For this reason, it is not advisable to expose mold to excessive amounts of ultraviolet light, considering that ultraviolet light leaks into the surrounding area when it is exposed to ultraviolet light. EXAMPLES

[0032] Next, an experiment to evaluate whether mold can be inactivated with a small amount of irradiation in the present embodiment 1 will be described. In the experiment, it was found that mold growth can be suppressed not by inactivating mold spores, but by inactivating the hyphae after spores have germinated.

[0033] First, a concentrated solution of Aspergillus niger spores was prepared and mixed with a potato dextrose liquid medium to prepare a spore solution with a concentration of 106 spores / mL. The spore solution was uniformly applied to a polyethylene film and placed in place of the filter 3 of the air conditioning device 21 in FIG. 1. After that, the operation of the present embodiment 1 was performed once a day for 10 times, that is, for 10 consecutive days. At this time, the temperature near the film when irradiated with ultraviolet light was 23°C and the relative humidity was 90%. The film was taken out and the surface of the film was observed under a microscope to check whether the mold hyphae had extended at nine points, and it was examined whether the hyphae had extended. As a control experiment, a comparative example in which ultraviolet light was not irradiated by the light irradiation device 10 was also examined.

[0034] Fig. 5 shows the results of an example of the air conditioner 21 according to the first embodiment. Fig. 6 shows the results of a comparative example. As a result of the experiment, the amount of ultraviolet light irradiation per day was 5 mJ / cm 2 10 times, i.e., 10 days, cumulative amount 50mJ / cm 2 When UV light was applied to mold spores, no hyphae were observed at 9 observation points under the microscope, as shown in FIG. 5. In contrast, when UV light was not applied, hyphae were observed at all 9 observation points, as shown in FIG. 6. Aspergillus niger germinates and grows within 7 days in a high humidity environment at 25°C and in the presence of nutrients. From the results of this experiment, it can be interpreted that by applying UV light to mold spores under high humidity conditions, all spores germinate and transition to a hyphae state, but all hyphae are inactivated by the UV light. In the present embodiment 1, the daily dose of irradiation is set to 5 mJ / cm2. 2The example shows daily irradiation, but the daily irradiation dose is 10 mJ / cm 2 Alternatively, irradiation may be performed once every two days.

[0035] As described above, according to the first embodiment, the control device 40 controls the humidity adjustment unit to humidify the area 11, and then controls the light irradiation device 10 to irradiate the area 11 with light. That is, after the mycelium germinated from the mold spores grows, light is irradiated by the light irradiation device 10. In this way, by pre-humidifying the area 11, the mycelium after the spores germinate is inactivated by irradiating it with light. Therefore, mold growth can be suppressed with a small amount of irradiation.

[0036] Embodiment 2 7 is a side view showing an indoor unit 1 according to embodiment 2. This embodiment 2 differs from embodiment 1 in the installation position of the light irradiation device 10. In this embodiment 2, the parts common to embodiment 1 are given the same reference numerals and the description is omitted, and the differences from embodiment 1 will be mainly described.

[0037] As shown in Fig. 7, the heat exchanger 31, which is a humidity adjusting unit, and the light irradiation device 10 are provided adjacent to each other. In the present embodiment 2, the light irradiation device 10 does not irradiate light toward the direction of the filter 3 as the region 11, but irradiates light toward the inside of the blower 7 as the region 11. Here, the blower 7 is a cylindrical fan called a Line Flow Fan (registered trademark), and is made of a resin such as polypropylene that is not easily deteriorated by ultraviolet light. The inner wall of the blower 7 is a part where air moves at high speed, and mold spores or dirt are likely to adhere to the inner wall.

[0038] FIG. 8 is a flowchart showing the operation of the control device 40 according to the second embodiment. Next, the operation of the control device 40 will be described. As shown in FIG. 8, an air conditioning operation such as a cooling operation, a heating operation, or a fan operation is started (step S1). Thereafter, when the cooling operation, the heating operation, or the fan operation is stopped (step S2), an inside cleaning operation is started. In the inside cleaning operation, the opening / closing part 9 is opened and the indoor unit 1 is in an open state. In this state, the fan 7 operates and a water generating operation for cooling the heat exchanger 31 is performed (step S3). Specifically, an operation similar to the cooling operation is performed. By using the heat exchanger 31 as an evaporator, the air is cooled and condensation occurs in the heat exchanger 31.

[0039] When condensation occurs on the surface of the heat exchanger 31, the water generating operation is switched to the humidifying operation (step S4). At this time, the opening / closing part 9 is closed, the blower 7 is kept in operation, and the heat exchanger 31 is heated, thereby increasing the humidity inside the housing 1a. When the humidity reaches a certain value or more (step S5), the light irradiation device 10 irradiates the blower 7 with light (step S16). The irradiation amount is 5 mJ / cm2. 2 After the humidity reaches 100%, the light irradiation from the light irradiation device 10 stops (step S7). Then, the opening / closing unit 9 is opened, the blower 7 is operated, and the humidity inside the indoor unit 1 decreases (step S8). If the opening / closing unit 9 is not opened and the humidity inside the indoor unit 1 does not decrease, the high-density state inside the indoor unit 1 will be maintained. This will cause mold spores remaining inside the indoor unit 1 to germinate, leading to mold growth. For this reason, step S8 is executed to suppress mold growth.

[0040] According to the second embodiment, light is irradiated onto blower 7 by light irradiation device 10, so that the growth of mold inside blower 7 can be suppressed.

[0041] Embodiment 3 Fig. 9 is a side view showing an indoor unit 1 according to embodiment 3. This embodiment 3 differs from embodiment 1 in that the humidity adjustment section is a humidifier 12 rather than a heat exchanger 31. In this embodiment 2, parts in common with embodiment 1 are given the same reference numerals and description thereof is omitted, and the following description will focus on the differences from embodiment 1.

[0042] As shown in FIG. 9, the humidity adjustment unit is a humidifier 12, and is disposed between the second heat exchanger 5 and the third heat exchanger 6. The humidity adjustment unit is a nozzle-type humidifier that humidifies using a nozzle. The humidity adjustment unit may be, for example, an evaporative humidifier that humidifies by evaporating water, a heater-type humidifier that heats water, or an ultrasonic humidifier that humidifies water by misting it with ultrasonic waves. The water used for humidification may be supplied from the outside, or may be stored in a tank inside the indoor unit 1 and supplied as needed.

[0043] A drain pan 13 is provided below the heat exchanger 31. The drain pan 13 receives water that drops from the heat exchanger 31. The light irradiation device 10 irradiates light onto the portion of the drain pan 13 that receives water, which is the area 11. During cooling operation, the heat exchanger 31 acts as an evaporator, and water adheres to the heat exchanger 31. Therefore, water constantly flows through the drain pan 13 during cooling operation, making it easy for mold to grow.

[0044] Fig. 10 is a flowchart showing the operation of the control device 40 according to the third embodiment. Next, the operation of the control device 40 will be described. As shown in Fig. 10, an air conditioning operation such as a cooling operation, a heating operation, or a fan operation is started (step S1). Thereafter, when the cooling operation, the heating operation, or the fan operation is stopped (step S2), an inside cleaning operation is started. In the inside cleaning operation, the opening / closing part 9 is closed and the indoor unit 1 is in a sealed state. In this state, a humidifying operation is performed (step S4).

[0045] The inside of the housing 1a is humidified, and the humidity inside the housing 1a increases. When the humidity reaches a certain value or more (step S5), the light irradiation device 10 irradiates the drain pan 13 with light (step S26). The irradiation amount is 5 mJ / cm 2 . 2 After the humidity reaches 100%, the light irradiation from the light irradiation device 10 stops (step S7). Then, the opening / closing unit 9 is opened, the blower 7 is operated, and the humidity inside the indoor unit 1 decreases (step S8). If the opening / closing unit 9 is not opened and the humidity inside the indoor unit 1 does not decrease, the high-density state inside the indoor unit 1 will be maintained. This will cause mold spores remaining inside the indoor unit 1 to germinate, leading to mold growth. For this reason, step S8 is executed to suppress mold growth.

[0046] According to the third embodiment, the light irradiation device 10 irradiates the drain pan 13 with light, so that the growth of mold in the drain pan 13 can be suppressed. [Explanation of symbols]

[0047] REFERENCE SIGNS LIST 1 indoor unit, 1a housing, 2 intake port, 3 filter, 4 first heat exchanger, 5 second heat exchanger, 6 third heat exchanger, 7 blower, 8 outlet, 9 opening / closing section, 10 light irradiation device, 11 area, 12 humidifier, 13 drain pan, 21 air conditioning device, 22 outdoor unit, 24 refrigerant circuit, 25 refrigerant piping, 26 compressor, 27 flow path switching device, 28 outdoor heat exchanger, 29 outdoor blower, 30 expansion section, 31 heat exchanger, 40 control device.

Claims

1. A housing constituting an outer shell; A humidity adjusting unit that adjusts the humidity inside the housing; a light irradiation device that irradiates light onto an area in which the humidity has been adjusted by the humidity adjustment unit; a control device that controls the humidity adjusting unit to humidify the area, and then controls the light irradiating device to irradiate the area with light; An air conditioning device comprising:

2. After the mycelium that germinates from the mold spores grows, light is irradiated by the light irradiation device.

2. The air conditioning apparatus according to claim 1.

3. The wavelength of the light irradiated by the light irradiation device is ultraviolet light having a wavelength of 200 nm to 280 nm.

3. An air conditioning apparatus according to claim 1 or 2.

4. The humidity adjusting unit and the light irradiating device are provided adjacent to each other.

3. An air conditioning apparatus according to claim 1 or 2.

5. The humidity adjusting unit is a heat exchanger.

3. An air conditioning apparatus according to claim 1 or 2.

6. The control device includes: Humidifying the area by heating or drying condensed water in the heat exchanger.

6. The air conditioning system according to claim 5.

7. The humidity adjustment unit is A nozzle-type humidifier, an evaporation-type humidifier, a heater-type humidifier, or an ultrasonic humidifier.

3. An air conditioning apparatus according to claim 1 or 2.

8. The humidity adjusting unit adjusts the relative humidity of the area to 70% or more.

3. An air conditioning apparatus according to claim 1 or 2.

9. An opening / closing unit that opens and closes the inside and outside of the housing, The control device includes: Before controlling the humidity adjusting unit to humidify the area, the opening and closing unit is controlled to isolate the inside and the outside of the housing.

3. An air conditioning apparatus according to claim 1 or 2.

10. Further comprising a blower for blowing air, The control device includes: After controlling the light irradiation device to irradiate the area with light, the opening / closing unit is controlled to open the inside and outside of the housing, and the blower is started.

10. The air conditioning apparatus according to claim 9.

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