KR20050080147A - Domestic thermohygrostat - Google Patents

Abstract

The present invention relates to a domestic thermo-hygrostat, comprising: an indoor unit having an evaporator, an evaporator side expansion valve, a reheat condenser and a humidifier, an outdoor unit having an outdoor heat exchanger, an outdoor heat exchanger side expansion valve, and an outdoor temperature sensor, and an indoor unit or an outdoor unit. A compressor, a heat exchanger, a controller, and a refrigerant path switching means, and the controller reads the outdoor temperature from the outdoor temperature sensor and opens and closes the refrigerant path switching means when the outdoor temperature is equal to or greater than a preset temperature. -> Liquid heat-> Outdoor heat exchanger side expansion valve-> Outdoor heat exchanger-> Liquid heat-> Compressor by forming a refrigerant circulation cycle consisting of a compressor to perform a heating operation using a reheat condenser and an outdoor heat exchanger, the control unit is the outdoor temperature When the outdoor temperature is read from the sensor and the outdoor temperature is less than the preset temperature, the refrigerant path switching means is opened and closed. It is characterized in that the heating operation using the reheat condenser and the evaporator is formed by forming a refrigerant circulation cycle consisting of the compressor-> reheat capacitor-> liquid heater-> evaporator-side expansion valve-> evaporator-> liquid heater-> compressor.

Description

Domestic thermo-hygrostat {DOMESTIC THERMOHYGROSTAT}

The present invention relates to a domestic thermo-hygrostat, and more particularly, to a domestic thermo-hygrostat provided with a reheat condenser in the indoor unit and a heat pump capable of heating operation using the reheat condenser and the outdoor heat exchanger of the outdoor unit.

Until now, the thermo-hygrostat is mainly installed in the room where the system or device which generates a lot of heat such as computer room, precision measurement room, engine laboratory, clean room of semiconductor factory, electromagnetic plate production room, etc. It has been used to stay within a certain range.

However, recently, due to the improvement of living standards, the improvement of the living environment, and the desire for healthy living, not only the cooling and dehumidification of the summer season using air conditioners, but also the humidification of indoor air using a humidifier and the Efforts have been made to maintain room temperature and humidity in a comfortable state for human activity such as heating.

Conventional thermo-hygrostats combine a control unit (also called a hot gas controller), components for cooling and heating, and components for dehumidification or humidification into a single system. If the humidity is out of the error range than the set temperature or the set humidity is detected, the control unit automatically performs the cooling, heating, dehumidification or humidification operation. While these features have been used for the normal operation of systems and devices installed in rooms, they can also be used to maintain the proper temperature and humidity for human activities at home.

However, there is a drawback that the power consumption is too much to use a conventional thermo-hygrostat as it is in the home. This is because the thermo-hygrostat needs not only cooling operation and dehumidification operation but also heating operation and humidification operation.

Conventionally, the heating operation of the thermo-hygrostat is performed by a method of circulating indoor air by a blower after operating the heat transfer heater. However, such electrothermal heater heating not only takes a long time to reach the set temperature, but also has a disadvantage in that a large amount of power is consumed due to poor heating efficiency.

In addition, conventional humidification has used a method of supplying water to a room through a blower by receiving water in a fan that is open upward and heating it with a heater such as an electrode. Therefore, a lot of power was consumed even in the humidification operation.

Recently, not only an expansion valve is provided in the evaporator of the indoor unit, but also an expansion valve is provided in the condenser of the outdoor unit. The heat pump system is used as a cooling and heating device for cooling by using a refrigerant circulation cycle that circulates the compressor and the evaporator-> condenser side expansion valve-> condenser-> compressor during heating operation.

The heat pump system can be used not only for air cooling (for refrigerant evaporation) but also for air heating (for refrigerant condensation) of the indoor unit. However, there was a problem in using the thermohygrostat for the following reasons.

That is, the place where the thermo-hygrostat is installed is mainly a room where heat-sensitive systems or devices are installed, such as a computer room, a precision measurement room, an engine laboratory, a clean room of a semiconductor factory, an electromagnetic plate production room, and these systems or devices have a certain range of temperature and humidity. If the temperature is too high, the operation should be switched to heating operation immediately. If the room temperature becomes too high, the operation should be switched to cooling operation immediately. The same operation should be carried out when the thermohygrostat is used at home. However, if the conventional heat pump system is applied to the thermo-hygrostat that performs this operation as it is, the evaporator of the indoor unit must be used for cooling and then immediately converted to heating, and conversely, for heating and then immediately for cooling. shall. This is because, when the cooling operation is performed, the indoor air is always supercooled, and when the heating operation is performed, the indoor air is always overheated and out of the set temperature range. However, using the same heat exchanger for refrigerant evaporation and immediately converting it to refrigerant condensation, or vice versa, for refrigerant evaporation and immediately for refrigerant evaporation significantly reduces thermal efficiency and responds to changes in room temperature. It makes the constant temperature function of thermo-hygrostat not to be possible by normal cooling or heating. Therefore, the heating in the thermo-hygrostat mainly used the electrothermal heater.

In addition to the above-described problems, the heat pump system also has the following fatal problems.

In the heating operation using the heat pump, the refrigerant circulates in the compressor-> indoor evaporator-> condenser side expansion valve-> outdoor condenser-> compressor, condensation occurs in the indoor unit evaporator, and evaporation occurs in the outdoor unit condenser. When the temperature around the outdoor unit's condenser drops below 10 ℃, the latent heat of evaporation required for the refrigerant to evaporate in the outdoor unit's condenser is insufficient, resulting in poor evaporation. In the evaporator of the indoor unit in which the condensation occurs, the specific volume of the suction refrigerant is increased to reduce the amount of heat generated for condensation, and thus the heating performance is gradually decreased. In fact, as a result of testing a commercially available heat pump, when the temperature around the outdoor unit drops below 10 ° C, the heating efficiency drops significantly, and when the temperature reaches -5 ° C to -10 ° C, the heat pump is not heated at all. In order to improve this point, Korean Patent Registration No. 10-496376 or Korean Laid-Open Patent Publication No. 2002-70944 have a device (secondary heat exchanger unit or calorie recovery device) which allows heat exchange between the output tube of the condenser and the output tube of the evaporator. While attempting to replenish the latent heat of evaporation, experimentally produced examples confirmed that the effects described in these specifications appeared only insignificant levels. Therefore, all of the combined heating and cooling systems employing the recent heat pumps have electric heaters therein for heating the cold weather separately from the heat pump system unlike the descriptions or the contents of these specifications.

The present invention devised to solve the above-described problems of the prior art, an object of the present invention is to provide a constant temperature and humidity home for the effective heating in the cold weather is impossible to heat by a heat pump without having a separate heat transfer heater.

Another object of the present invention is to provide a domestic thermo-hygrostat that can maintain a constant temperature at any time while switching the cooling operation and heating operation while using a heat pump.

Still another object of the present invention is to provide a constant temperature / humidity home that can improve the cooling efficiency and the heating efficiency by smoothly condensing and evaporating the refrigerant in the refrigerant purification cycle.

Still another object of the present invention is to provide a domestic thermo-hygrostat capable of heating and dehumidifying with low power consumption.

Still another object of the present invention is to provide a domestic thermo-hygrostat that can supply sterilized and deodorized air to the room.

The domestic thermo-hygrostat according to the present invention to achieve the above object is provided with an evaporator, an evaporator side expansion valve, a reheat condenser and a humidifier in the indoor unit, an outdoor heat exchanger, an outdoor heat exchanger side expansion valve and an outdoor temperature sensor. And an indoor unit or an outdoor unit including a compressor, a heat exchanger, a control unit, and a refrigerant path switching means, wherein the controller reads the outdoor temperature from the outdoor temperature sensor and opens and closes the refrigerant path switching means when the outdoor temperature is equal to or greater than a preset temperature. Compressor-> Reheat Capacitor-> Liquid Heater-> Outdoor Heat Exchanger Expansion Valve-> Outdoor Heat Exchanger-> Liquid Heater-> Compressor by forming a refrigerant circulation cycle consisting of the reheat condenser and the outdoor heat exchanger The controller reads the outdoor temperature from the outdoor temperature sensor and if the outdoor temperature is less than a preset temperature, Open and close the furnace switching means to form a refrigerant circulation cycle consisting of compressor-> reheat condenser-> liquid heater-> evaporator-side expansion valve-> evaporator-> liquidizer-> compressor. Characterized in that.

Hereinafter, with reference to the accompanying drawings will be described in detail the heat pump structure of the domestic thermo-hygrostat according to the present invention.

1 is a home constant temperature according to an embodiment of the present invention (in the case of using six bidirectional solenoid valves (hereinafter referred to as "bidirectional solenoid valves" simply "solenoid valves") and two check valves as a refrigerant path switching means) 2 is a block diagram showing a cooling operation mode of the humidifier, Figure 2 is a block diagram showing a heating operation mode of the domestic thermo-hygrostat shown in Figure 1, Figure 3 is a dehumidification mode or cold heating mode of the domestic thermo-hygrostat shown in Figure 1 It is a schematic diagram showing. In addition, Figure 4 is another embodiment of the present invention (one three-way solenoid valve (hereinafter referred to as "three-way solenoid valve" simply referred to as a three-way valve) as a refrigerant path switching means), four two-way solenoid valve and two check FIG. 5 is a block diagram showing a cooling operation mode of the home thermo-hygrostat according to the case of using a valve, and FIG. 5 is a block diagram showing a heating operation mode of the home thermo-hygrostat shown in FIG. 4, and FIG. This diagram shows the dehumidification operation mode of the thermo-hygrostat and the cold operation mode.

First, referring to FIGS. 2 and 3 or 5 and 6, a feature of the present invention includes two heat exchangers E and RC inside the indoor unit 100, one of which evaporates a refrigerant to provide air. It is used as an evaporator (E) for cooling, and the other one is used as a reheat condenser (RC) for condensing a refrigerant to heat air, and using a refrigerant path switching means to heat the heat pump during the reheat condenser ( RC) and the outdoor heat exchanger (HE) or the reheat condenser (RC) and the evaporator (E).

In the exemplary embodiment shown in FIGS. 1 to 3, the refrigerant path switching means is formed using six solenoid valves S1 to S6 and two check valves 112 and 213, but the refrigerant path switching means is limited thereto. As shown in FIGS. 4 to 6, the refrigerant path using one three-way valve 204, three bidirectional solenoid valves S4, S5, and S6, and two check valves 112 and 213 are illustrated. A switching means can also be configured. In FIG. 1 to FIG. 6, the solenoid valve filled with black is closed, and the solenoid valve otherwise is opened.

Although not shown in FIG. 1 to FIG. 6, the thermo-hygrostat has a control unit (also referred to as a hot gas controller) as described in the related art (solenoid valve, three-way valve, Compressor, cooling fan, blower, air cleaner, etc.). The control unit is usually provided in the indoor unit 100, but may be provided in the outdoor unit 200.

1 to 6, the domestic constant temperature and humidity chamber according to the present invention includes an evaporator (E), an evaporator side expansion valve (EV1), a reheat capacitor (RC), and a humidifier (104 to 108) in the indoor unit (100). The outdoor unit 200 includes an outdoor heat exchanger HE, an outdoor heat exchanger-side expansion valve EV2, and an outdoor temperature sensor 216. 1 to 6 exemplarily show a case in which the outdoor unit 200 includes a compressor CO, a liquid heater 211, and a refrigerant path switching means, these components may be provided in the indoor unit 100. It may be.

As described above, the characteristic of the domestic thermo-hygrostat according to the present invention lies in the configuration of a refrigerant circulation cycle for heating operation. That is, in the present invention, when the controller reads the outdoor temperature from the outdoor temperature sensor 216 and the outdoor temperature is equal to or greater than the preset temperature, as shown in FIG. 2 or 5, the compressor (CO)-> reheating capacitor (RC). )-> Liquid Heater (211)-> Expansion Heat Exchanger Side Expansion Valve (EV2)-> Outdoor Heat Exchanger (HE)-> Liquid Heater (211)-> Compressor (CO) When the heating operation is performed using the RC and the outdoor heat exchanger HE, and the controller reads the outdoor temperature from the outdoor temperature sensor and the outdoor temperature is less than a preset temperature, as shown in FIG. (CO)-> Reheat condenser (RC)-> Liquid heater (211)-> Evaporator side expansion valve (EV1)-> Evaporator (E)-> Liquidizer (211)-> Compressor (CO) Forming a cycle is characterized in that the heating operation using the reheat capacitor (RC) and the evaporator (E). The outdoor temperature set to determine whether to configure a heat pump using a reheat condenser (RC) and an outdoor heat exchanger (HE) or a heat pump using a reheat condenser (RC) and an evaporator (E) is normally used. It is preferable that the heat pump (heat pump using the reheating capacitor RC and the outdoor heat exchanger HE) is about 10 ° C, which is a temperature at which heating efficiency begins to be lost.

The heat pump using the reheat condenser (RC) and the evaporator (E) is used for cold weather heating (heating when the set outdoor temperature is less than 10 ° C in the above example), which is used for the evaporator (E) and the reheat condenser (RC). If the endotherm or the heat dissipation area is the same, it is possible because the amount of heat per unit time of the latent heat of condensation emitted by the reheat condenser (RC) is 20% or more than that of the latent heat of evaporation absorbed by the evaporator in the closed refrigerant circulation cycle. Therefore, even if the reheating capacitor (RC) and the evaporator (E) are provided in both the indoor unit (100), if they are included in the closed refrigerant circulation cycle, heating using the latent heat of condensation of the reheating capacitor (RC) is possible. Since the refrigerant evaporation in the evaporator E disposed inside the 100 is very active, high temperature heating is possible as the latent heat of condensation is accumulated over time.

In the heating operation (heat pump mode) according to the embodiment shown in FIG. 2, the solenoid valves S2, S3 and S4 are opened and the solenoid valves S1, S5 and S6 are closed. Then, the refrigerant is a compressor CO, a muffler 202 installed to remove the noise of the compressor CO, a solenoid valve S2, and a reheat condenser installed inside the indoor unit 100 to generate condensation heat while the refrigerant is condensed. (RC), a check valve 112, a condenser liquid refrigerant and a heat exchanger 211 to exchange heat between the low-temperature low-pressure gas refrigerant evaporated in the outdoor heat exchanger (HE), and a receiver (LR) for storing the condensate refrigerant ), A filter drier 207 for filtering foreign matter from the liquid refrigerant, a sight glass for observing the flow of the liquid refrigerant from the outside, a solenoid valve S4, an expansion valve EV2, and a refrigerant evaporate. Heat exchange is performed between the outdoor heat exchanger (HE), which takes the latent heat of evaporation from the surrounding air and cools the surrounding air, the solenoid valve S3, the low-temperature low-pressure gas refrigerant, and the medium-temperature high-pressure liquid refrigerant condensed in the reheat condenser (RC). The column ( 211) and the strainer 212, which filters foreign matters of the gas refrigerant, are sequentially returned to the compressor CO, and the above circulation is repeated, by the heat of condensation in the reheating capacitor RC of the indoor unit 100. Perform heating At this time, if the frost or frost around the coil of the outdoor heat exchanger (HE) occurs, the pressure inside the outdoor heat exchanger (HE) increases due to the lack of latent heat of evaporation, and the heating efficiency drops sharply. To this end, a pipe 206 capable of directly injecting hot gas (high temperature and high pressure gas refrigerant) output from the compressor 211 into the outdoor heat exchanger HE is provided, and the pipe 206 has a gas refrigerant output stage of the compressor. And a hot gas bypass valve 203 that opens automatically when the pressure difference between the pressure of the expansion refrigerant input stage of the indoor heat exchanger (HE) falls below a predetermined pressure (for example, 3 K / cm 2), and the outdoor heat exchanger (HE). When freezing, hot gas (high temperature, high pressure gas refrigerant) is directly injected into the coil of the outdoor heat exchanger (HE) to enable thawing.

In the liquid heater 211, the refrigerant returning to the compressor CO is made in an overheated state, and the refrigerant condensed in the reheat capacitor RC is made in an overcooled state to improve the efficiency of the refrigerant circulation cycle.

In the heating operation (heat pump mode) according to the embodiment shown in FIG. 5, ports a and c of the three-way valve are opened, and port b is closed. In addition, solenoid valves S3 and S4 are opened, and solenoid valves S5 and S6 are closed. The refrigerant circulation structure of the embodiment shown in FIG. 5 is the same except that the refrigerant circulation structure of the embodiment shown in FIG. 2 and the ports a and port c of the three-way valve 204 open instead of the solenoid valve S2 of FIG. .

During the cold weather heating operation according to the embodiment shown in FIG. 3, the solenoid valves S2 and S5 are opened and the solenoid valves S1, S3, S4 and S6 are closed. Then, the refrigerant is a compressor CO, a muffler 202 installed to remove the noise of the compressor CO, a solenoid valve S2, and a reheat condenser installed inside the indoor unit 100 to generate condensation heat while the refrigerant is condensed. (RC), the check valve 112, the condenser liquid refrigerant and the liquid-heater 211 which heat-exchanges between the low-temperature low-pressure gas refrigerant evaporated by the evaporator E in the indoor unit 100, and the liquid solution which stores a condensate refrigerant | coolant Group LR, filter drier 207 for filtering foreign matter from liquid refrigerant, sight glass for observing the flow of liquid refrigerant from the outside, solenoid valve S5, expansion valve EV1, refrigerant Evaporator (E), which absorbs latent heat of vaporization and vaporizes into a low-temperature, low-pressure gas refrigerant, an evaporation pressure adjusting valve (113) for maintaining a constant evaporation pressure in the evaporator (E), a low-temperature low-pressure gas refrigerant, and Medium and high pressure liquid refrigerant condensed in reheating capacitor (RC) The heat exchanger 211 and the strainer 212 which filters foreign matters of the gas refrigerant are sequentially returned to the compressor CO, and the reheating capacitor of the indoor unit 100 is repeated. Heating by condensation heat in (RC) is carried out. As described above, when the endotherm or heat dissipation area of the evaporator E and the reheat condenser RC are the same, the reheat condenser RC is larger than the amount of heat per unit time of the latent heat of evaporation absorbed by the evaporator E in the closed refrigerant circulation cycle. Since the amount of heat per unit time of latent heat of condensation discharged by 20% or more is large, the evaporator E may be heated even if all of the reheat capacitors RC are provided in the indoor unit 100. At this time, if the frost or frost around the coil of the evaporator (E) occurs, the pressure inside the evaporator (E) increases due to the lack of latent heat of evaporation, and the heating efficiency drops sharply, in order to prevent this, the receiver Hot to open automatically when the pressure difference across the evaporator side expansion valve (EV1) falls below a certain pressure (for example, 3K / cm 2) so that the medium-temperature high-pressure liquid refrigerant output from the LR can be directly injected into the evaporator E. It is preferable to install the gas bypass valve 111 in parallel with the evaporator side expansion valve EV1.

In the cold weather heating operation (heat pump mode) according to the embodiment shown in FIG. 6, ports a and c of the three-way valve are opened, and port b is closed. In addition, solenoid valve S5 is opened and solenoid valves S3, S4, and S6 are closed. The refrigerant circulation structure of the embodiment shown in FIG. 6 is identical to that of the refrigerant circulation structure of the embodiment shown in FIG. 3 except that ports a and port c of the three-way valve 204 open instead of the solenoid valve S2 of FIG. 3. .

1 and 4, in the cooling operation, the solenoid valves S1, S5, and S6 are opened in the embodiment shown in FIG. 1, and the solenoid valves S3 and S4 are closed, or the ports a and ports of the three-way valve in FIG. 4. Open b and close port c. Compressor (CO)-> solenoid valve S1 or 3-way valve 204-> outdoor heat exchanger (HE)-> solenoid valve S6-> check valve (213)-> liquid heater ( 211)-> Hydraulic (LR)-> Filter drier (207)-> Sightgrass (208)-> Solenoid valve S5-> Evaporator side expansion valve (EV1)-> Evaporator (E)-> Evaporation pressure adjusting valve ( 113)-> strainer 212-> evaporator heater 211-> compressor (CO) to form a refrigerant circulation cycle. At this time, condensation takes place in the outdoor heat exchanger (HE) and cooling occurs while evaporation occurs in the evaporator (E). The description of the parts that perform the remaining ancillary functions is the same as in the above description of heating operation.

3 or 6, in the dehumidification operation, dehumidification is performed using the same refrigerant circulation cycle as in the cold weather heating operation. Moisture in the humid air sucked through the air inlet 114 of the indoor unit 100 is condensed while passing through the evaporator (E) and discharged to the drain 109, and reheated by the heat of condensation in the reheat condenser (RC) after the indoor unit 100 is discharged to the room through the air outlet 115 of the upper portion.

Among the components constituting the refrigerant circulation cycle in the above-described heating operation, cold weather operation, cooling operation or dehumidification operation, refrigerant path switching means (solenoid valves S1 to S6, three-way valve 204, check valves 112 and 213) and a compressor ( CO), reheat condenser (RC) and outdoor heat exchanger (HE), expansion valves (EV1, EV2), evaporator (E), and heat exchanger 211 are all essential components, but the remaining components, muffler 202, fluid Machine LR, evaporation pressure regulating valves 113 and 205, hot gas bypass valves 111 and 203, filter drier 207, sight glass 208 and strainer 212 are implemented by the practitioner of the present invention. Optional component that may be omitted as needed.

Humidification of the domestic thermo-hygrostat according to the present invention is a water hose 104 which is connected to a direct water or a pump, a free carbon filter 105 for purifying water passing through the water hose 104, and the water hose 104 An ultraviolet lamp tube 106 for sterilizing water passing through the nozzle, a nozzle 107 provided at the tip of the water hose 104 to spray water, and disposed below the nozzle 107 and the nozzle 107. It is preferably made by an evaporative humidifier consisting of an element 108 to allow the water to naturally evaporate by passing air while retaining the water injected from.

In addition, in order to sterilize and deodorize the air passing through the evaporator (E), the evaporative humidification element 108 and the reheat condenser (RC) in the indoor unit 100 and discharge it to the room, the reheat disposed in the indoor unit 100. An air cleaner 117 consisting of a long wave ultraviolet lamp and a short wave ultraviolet lamp provided between the photocatalyst coating grid and the two photocatalyst coating grids spaced apart between the condenser RC and the air outlet 115 of the indoor unit housing 101. It is preferable to have a. The long-wave ultraviolet lamp is an ultraviolet lamp that emits ultraviolet rays having a wavelength length of 315 nm to 400 nm for activating a photocatalyst, and the short-wave ultraviolet lamp has ultraviolet rays having a wavelength length of 100 nm to 280 nm for sterilizing bacteria, viruses, and fungi in the air passing through. It is an ultraviolet lamp that emits light. In addition, the photocatalyst coating grating is a photocatalyst coated aluminum lattice on the surface is activated by the ultraviolet rays irradiated from the long-wave UV lamp to sterilize and deodorize the air passing through.

In addition, in the indoor unit 100, a deodorant pack 116 made by accommodating cinnamic aldehyde (C ₉ H ₈ O), which is a material widely used as a deodorant and an air freshener, in a synthetic resin pack is provided to remove odor components in air components. It is desirable to help and release the fragrant air into the room.

According to the present invention having the above-described configuration, it is possible not only to provide heating and dehumidification with a small amount of electric power without providing a separate electric heater, but also to overcome the disadvantages of the conventional heat pump so that the heat pump can be effectively used in the thermo-hygrostat. And, there is an advantage that can supply the sterilized and deodorized air to the room.

1 is a block diagram showing a cooling operation mode of a domestic thermo-hygrostat according to an embodiment of the present invention.

Figure 2 is a block diagram showing a heating operation mode of the domestic thermo-hygrostat according to an embodiment of the present invention.

Figure 3 is a block diagram showing a dehumidification mode or cold heating mode of the domestic thermo-hygrostat according to an embodiment of the present invention.

Figure 4 is a block diagram showing a cooling operation mode of the domestic thermo-hygrostat according to another embodiment of the present invention.

Figure 5 is a block diagram showing a heating operation mode of the domestic thermo-hygrostat according to another embodiment of the present invention.

Figure 6 is a block diagram showing a dehumidification operation mode or cold heating operation mode of the domestic thermo-hygrostat according to an embodiment of the present invention.

             Explanation of symbols on the main parts of the drawings

100: indoor unit 101: indoor unit housing

102: diaphragm 103: blower

104: water hose 105: free carbon filter

106: ultraviolet lamp tube 107: nozzle

108: element 109: drain

111: hot gas bypass valve 112: check valve

113: evaporation pressure adjustment valve 114: air intake

115: air outlet 116: deodorant pack

117: air cleaner 200: outdoor unit

201: outdoor unit housing 202: muffler

203: hot gas bypass valve 204: three-way valve

205: evaporation pressure adjusting valve 207: filter drier

208: sight glass 211: liquid heater

212: strainer 213: check valve

214, 215: cooling fan 216: outdoor temperature sensor

CO: Compressor HE: Outdoor Heat Exchanger

EV1, EV2: Expansion valve E: Evaporator

RC: Reheat condenser S1 ~ S6: Solenoid valve

LR: Receiver

Claims (5)

The indoor unit 100 includes an evaporator E, an evaporator side expansion valve EV1, a reheat capacitor RC, and a humidifier, and the outdoor unit 200 includes an outdoor heat exchanger HE, an outdoor heat exchanger side expansion valve EV1, and The outdoor temperature sensor 216 is provided, and the indoor unit 100 or the outdoor unit 200 includes a compressor (CO), a liquid heater (211), a control unit, and a refrigerant path switching means. The controller reads the outdoor temperature from the outdoor temperature sensor 216 and opens and closes the refrigerant path switching means when the outdoor temperature is higher than or equal to a preset temperature. The compressor (CO)-> reheat capacitor (RC)-> liquid heater (211). )-> Outdoor heat exchanger side expansion valve (EV2)-> Outdoor heat exchanger (HE)-> Liquid heat exchanger (211)-> Compressor (CO) by forming a refrigerant circulation cycle consisting of reheat capacitor (RC) and outdoor heat exchanger Heating operation using (HE), The control unit reads the outdoor temperature from the outdoor temperature sensor and opens and closes the refrigerant path switching means when the outdoor temperature is less than a preset temperature. The compressor (CO)-> reheat capacitor (RC)-> liquid heater (211)-> Evaporator side expansion valve (EV1)-> Evaporator (E)-> Liquidizer (211)-> Compressor (CO) by forming a refrigerant circulation cycle to operate the heating operation using the reheat capacitor (RC) and evaporator (E). Household thermo-hygrostat, characterized in that. The method of claim 1, The control unit opens and closes the refrigerant path switching means, and the compressor (CO)-> external heat exchanger (HE)-> liquid heater 211-> evaporator side expansion valve (EV1)-> evaporator (E)-> liquid heater (211)-> Cooling operation by forming refrigerant circulation cycle consisting of compressor (CO), compressor (CO)-> reheat condenser (RC)-> liquid heater (211)-> evaporator side expansion valve (EV1) -> Evaporator (E)-> Liquidizer (211)-> Compressor (CO) by forming a refrigerant circulation cycle characterized in that the constant temperature and humidity home. The method according to claim 1 or 2, The humidifier is a water hose 104 connected to a direct water or a pump, a precarbon filter 105 for purifying water passing through the water hose 104, and sterilizing water passing through the water hose 104. While holding the ultraviolet lamp tube 106, the nozzle 107 which is provided at the tip of the water hose 104 to spray water, and disposed below the nozzle 107 and the water sprayed from the nozzle 107 It is a domestic constant temperature and humidity humidifier, characterized in that the evaporative humidifier consisting of an element (108) to naturally evaporate the water by passing air. The method according to claim 1 or 2, Between the reheating capacitor (RC) disposed in the indoor unit and the air outlet 115 of the indoor unit housing 101 is composed of a long wave ultraviolet lamp and a short wave ultraviolet lamp provided between the two photocatalyst coating grid and the photocatalyst coating grid. The home constant temperature and humidity characterized in that it is provided with an air cleaner (117). The method according to claim 1 or 2, The indoor unit is provided with a deodorant pack (116) containing cinnamic aldehyde (C ₉ H ₈ O) in the synthetic resin pack to remove the odor component and to release the fragrance.