JP5451995B2 - Air conditioning equipment - Google Patents

Description

  The present invention relates to an air conditioning facility.

  Conventionally, various facilities have been proposed as a method for appropriately maintaining the temperature and humidity of the indoor space. For example, the inventor of the present application has filed a patent application for the air conditioning facility shown in FIG.

  The air conditioning facility 100 shown in FIG. 5 includes a total heat exchanger 101, a sensible heat exchanger 102, and a humidity control apparatus 103. Moreover, this air conditioning equipment 100 sends outdoor air in order of the total heat exchanger 101, the sensible heat exchanger 102, the humidity control apparatus 103, the sensible heat exchanger 102, the indoor space 104, and the total heat exchanger 102. A flow path 105 is provided. The total heat exchanger 101 is configured such that sensible heat and latent heat can be exchanged between the air guided from the outside and the air guided from the indoor space 104. In the sensible heat exchanger 102, The sensible heat can be exchanged between the outdoor air that has passed through the total heat exchanger 101 and the air that has passed through the humidity control apparatus 103 and whose humidity has been adjusted. The humidity control apparatus 103 is configured to dehumidify or humidify the air guided from the sensible heat exchanger 102. In order to dehumidify the air, by flowing cold water through the heat medium coil 106 provided in the humidity control device 103, the air passing through the outer surface of the heat medium coil 106 is cooled, and the moisture contained in the air is condensed. To do. In addition, air is humidified by applying water vapor to the air by the action of the humidifier 107 provided in the humidity control apparatus 103.

  With such a configuration, for example, during the dehumidifying operation in the summer, the sensible heat exchanger 102 has outdoor air that has passed through the total heat exchanger 101 and low-temperature air that has passed through the humidity control apparatus 103 and has been removed from moisture. Since sensible heat exchange is performed with the air, the humidity of the air supplied to the indoor space is kept low (dehumidified), and the temperature of the air is made efficient. It can be reheated well and the reheat load can be reduced. Furthermore, since the temperature of the air led to the humidity control apparatus 103 can be changed to a low state by the action of the sensible heat exchanger 102, the operating load of the heat medium coil 106 that functions as a cooling coil can be reduced. .

  Although the above-described air conditioning equipment has an excellent energy saving effect of reducing the air reheating load and reducing the operating load of the heat medium coil, further energy saving is demanded.

  The present invention has been made to solve such a demand, and an object thereof is to provide an air-conditioning facility having a high energy saving effect.

The above object of the present invention is an air conditioner for adjusting the air guided from the outside to air-condition the indoor space, and includes a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger. A refrigerating circuit that is connected to a pipe and in which refrigerant circulation is reversibly configured to perform a refrigeration cycle, a total heat exchanger that exchanges sensible heat and latent heat, a sensible heat exchanger that exchanges sensible heat, and the total heat exchange Outdoor air in the order of the heat exchanger, the sensible heat exchanger, the outer surface of the second heat exchanger, the sensible heat exchanger, the indoor space, the total heat exchanger, and the outer surface of the first heat exchanger And a spraying means for spraying the condensed water generated on the outer surface of the second heat exchanger to the outer surface of the first heat exchanger, and the total heat exchanger Is configured so that heat can be exchanged between the air guided from the outside and the air guided from the indoor space. Sensible heat exchanger, and air the derived from the total heat exchanger, after being led from該顕heat exchanger on the outer surface of the second heat exchanger, and the air that is recirculated to該顕heat exchanger The first heat exchanger and the second heat exchanger are configured such that air guided to an outer surface from the total heat exchanger and the sensible heat exchanger, and an internal This is achieved by an air-conditioning facility configured to be able to exchange heat with a refrigerant passing through.

The air conditioner further includes a humidifier capable of humidifying the air after passing through the outer surface of the second heat exchanger, and the condensed water generated on the outer surface of the first heat exchanger is It is preferable that a flow path leading to the humidifier is provided as a water supply source for the humidifier.

  Moreover, it is preferable that the said flow path is further provided with the 1st bypass flow path which guide | induces a part of air guide | induced from the said indoor space directly to the outer surface of a said 1st heat exchanger.

  Moreover, it is preferable that the said flow path is further provided with the 2nd bypass flow path which guide | induces a part of air which passed the outer surface of the said 2nd heat exchanger directly to the said indoor space.

  ADVANTAGE OF THE INVENTION According to this invention, the air conditioning equipment with a high energy saving effect can be provided.

  Hereinafter, the air conditioning equipment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram schematically showing a basic configuration of an air-conditioning equipment 1 according to an embodiment of the present invention.

  The air conditioning facility 1 according to the present embodiment is a facility that adjusts air guided from the outside to air-condition the indoor space 4, and includes a refrigeration circuit 2 and an air-conditioning circuit 3 as shown in FIG. Yes.

  In the refrigeration circuit 2, the compression means 21, the first heat exchanger 22, the liquid receiver 23, the expansion valve 24, and the second heat exchanger 25 are connected by piping, and the refrigerant circulates inside to perform a refrigeration cycle. It is configured as follows.

The compression means 21 includes a compressor 26 for pressurizing and circulating the refrigerant in the refrigeration circuit 2 and a four-way valve 27. The four-way valve 27 is a device for changing the direction in which the refrigerant circulating in the refrigeration circuit 2 flows. For example, as shown in FIG. 1, by switching the four-way valve 27, the high-pressure side 261 of the compressor 26 The refrigerant flowing through the refrigeration circuit 2 is connected to the compressor 26 and the first heat exchanger by connecting the first heat exchanger 22 with the pipe and connecting the low pressure side 262 of the compressor 26 and the second heat exchanger 25 with the pipe. 22, the liquid receiver 23, the expansion valve 24, and the second heat exchanger 25 can be configured to flow in this order. Further, as shown in FIG. 2, by switching the four-way valve 27, the high pressure side 261 of the compressor 26 and the second heat exchanger 25 are connected by piping, and the low pressure side 262 of the compressor 26 and the first heat exchanger are connected. 22, the refrigerant flowing through the refrigeration circuit 2 is configured to flow in the order of the compressor 26, the second heat exchanger 25, the expansion valve 24, the liquid receiver 23, and the first heat exchanger 22. be able to. In addition, when using the compressor 26 which can rotate forward / reversely like a Roots pump as the compressor 26, it is possible to abbreviate | omit the four-way valve 27. FIG.

  The first heat exchanger 22 and the second heat exchanger 25 are air-cooled heat exchangers, and are devices that exchange heat between a refrigerant passing through the inside and air passing through the outer surface. The first heat exchanger 22 is configured such that heat exchange can be performed between the air guided from the indoor space 4 and passing through the total heat exchanger 32 and the refrigerant circulating in the refrigeration circuit 2. . Further, the second heat exchanger 25 can exchange heat between the air guided from the outside and passing through the total heat exchanger 32 and the sensible heat exchanger 33 and the refrigerant circulating in the refrigeration circuit 2. It is configured to be able to. When the dehumidifying operation is performed by the air-conditioning equipment 1 in summer, the first heat exchanger 22 acts as a condenser that condenses the refrigerant flowing inside, and the second heat exchanger 25 evaporates the refrigerant flowing inside. It acts as an evaporator. In addition, when performing a humidifying operation in winter, the first heat exchanger 22 acts as an evaporator that evaporates the refrigerant flowing inside, and the second heat exchanger 25 is a condenser that condenses the refrigerant flowing inside. Acts as

  The expansion valve 24 is configured to reduce the refrigerant to low pressure and low temperature by throttle expansion, and uses various expansion valves such as a constant pressure expansion valve, a temperature automatic expansion valve, a manual expansion valve, a capillary tube, and a float expansion valve. be able to.

  The liquid receiver 23 is a device that stores a liquid refrigerant that circulates in the refrigeration circuit 2.

  The air conditioning circuit 3 includes an air flow path 31, a total heat exchanger 32, a sensible heat exchanger 33, and a humidifier 34. The air flow path 31 includes a total heat exchanger 32, a sensible heat exchanger 33, an outer surface of the second heat exchanger 25, a humidifier 34, a sensible heat exchanger 33, an indoor space 4, a total heat exchanger 32, and It is a flow path for flowing outdoor air in the order of the outer surface of the first heat exchanger 22. The air flow path 31 includes an outside air introduction flow path 31a, a sensible heat exchanger supply flow path 31b, a second heat exchanger supply flow path 31c, a humidifier supply flow path 31d, a sensible heat exchanger reflux flow path 31e, and room air. A supply passage 31f, an indoor air discharge passage 31g, a first heat exchanger supply passage 31h, and an exhaust passage 31i are provided.

  The outside air introduction channel 31 a is a channel for guiding outdoor air to the total heat exchanger 32. The sensible heat exchanger supply flow path 31 b is a flow path for guiding the air guided to the total heat exchanger 32 through the outside air introduction flow path 31 a to the sensible heat exchanger 33. The second heat exchanger supply channel 31 c is a channel that guides the air that has passed through the sensible heat exchanger 33 to the outer surface of the second heat exchanger 25. The humidifier supply channel 31 d is a channel for guiding the air that has passed through the outer surface of the second heat exchanger 25 to the humidifier 34. The sensible heat exchanger recirculation flow path 31 e is a flow path for recirculating the air that has passed through the humidifier 34 to the sensible heat exchanger 33. The indoor air supply flow path 31 f is a flow path that guides the air guided to the sensible heat exchanger 33 through the humidifier supply flow path 31 d to the indoor space 4. The indoor air discharge channel 31 g is a channel that guides the air in the indoor space 4 to the total heat exchanger 32. The first heat exchanger supply flow path 31 h is a flow path for guiding the air guided from the indoor space 4 to the total heat exchanger 32 to the outer surface of the first heat exchanger 22. The exhaust passage 31i is a passage for discharging the air after passing through the outer surface of the first heat exchanger 22 to the outside.

  The total heat exchanger 32 exchanges sensible heat and latent heat between the air guided through the outside air introduction flow path 31a and the air guided from the indoor space 4 through the indoor air discharge flow path 31g. It is a device to perform.

  The sensible heat exchanger 33 includes air guided from the total heat exchanger 32 via the sensible heat exchanger supply flow path 31b, and air guided from the humidifier 34 via the sensible heat exchanger reflux flow path 31e. Is a device that exchanges sensible heat between the two.

  The humidifier 34 is a device that evaporates water such as tap water to increase the humidity in the air, and can be exemplified by a vaporizing humidifier. The humidifier 34 is operated as necessary. For example, when humidification of air is unnecessary in summer and the like, the humidifier 34 is not operated and the humidifier 34 is operated via the humidifier supply channel 31d. The guided air passes through the humidifier 34 and is guided to the sensible heat exchanger reflux channel 31e.

  The operation of the air-conditioning equipment 1 configured as described above will be described separately for the dehumidifying operation mode in the summer and the humidifying operation mode in the winter, with reference to experimental data conducted by the inventors and the accompanying drawings.

  First, the dehumidifying operation mode in summer will be described. Table 1 shows experimental data during the dehumidifying operation, and the air temperature (° C.) and the wet bulb temperature (° C.) at each position of air passing through the air flow path 31 (positions a to i in FIG. 1). , Relative humidity (%), absolute humidity (kg / kg ′) and enthalpy (kcal / kg). Positions a to i in Table 1 correspond to positions a to i in FIG. During the dehumidifying operation, the humidifier 34 is not operated, so the air state in the position e column in Table 1 is the same as the air state in the position d column.

まず、冷凍回路２を中心に説明する。図１に示すように、四方弁２７を操作し、圧縮機２６の高圧側２６１と第１熱交換器２２とが接続するように、また、圧縮機２６の低圧側２６２と第２熱交換器２５とが接続するように配管接続する。このように構成された冷凍回路２において、圧縮機２６を作動させることによって冷媒を圧縮して高圧にすることで冷媒の温度を上昇させる。圧縮機２６の作動により高温高圧となった冷媒は、第１熱交換器２２において放熱することで、第１熱交換器２２の外表面を通過する空気と熱交換する。この熱交換により、第１熱交換器２２の内部を通過する冷媒の温度は低下する。また、第１熱交換器２２の外表面を通過する空気は加熱される。

First, the refrigeration circuit 2 will be mainly described. As shown in FIG. 1, the four-way valve 27 is operated so that the high pressure side 261 of the compressor 26 and the first heat exchanger 22 are connected, and the low pressure side 262 of the compressor 26 and the second heat exchanger 22 are connected. The pipe is connected so that 25 is connected. In the refrigeration circuit 2 configured as described above, the refrigerant is compressed to a high pressure by operating the compressor 26 to increase the temperature of the refrigerant. The refrigerant that has become high temperature and pressure due to the operation of the compressor 26 dissipates heat in the first heat exchanger 22, thereby exchanging heat with air passing through the outer surface of the first heat exchanger 22. By this heat exchange, the temperature of the refrigerant passing through the inside of the first heat exchanger 22 decreases. Further, the air passing through the outer surface of the first heat exchanger 22 is heated.

  The refrigerant that has dissipated heat by passing through the first heat exchanger 22 is guided to the expansion valve 24 via the liquid receiver 23. The refrigerant led to the expansion valve 24 is further lowered in temperature due to a sudden drop in pressure, and led to the second heat exchanger 25.

  The refrigerant guided to the second heat exchanger 25 exchanges heat with the air passing through the outer surface of the second heat exchanger 25, thereby receiving heat from the air and becoming saturated vapor to the compressor 26. The refrigeration circuit 2 is circulated so as to repeat the above steps again. Since the air passing through the outer surface of the second heat exchanger 25 is absorbed by the refrigerant passing through the inside of the second heat exchanger 25, the temperature of the air decreases. By passing through the outer surface of the second heat exchanger 25 as described above, the temperature of the air is lowered. As a result, moisture (water vapor) contained in the air condenses and becomes condensed water outside the second heat exchanger 25. Adhere to the surface.

  Next, the air conditioning circuit 3 will be mainly described. First, outdoor air is led to the total heat exchanger 32 by the outside air introduction channel 31a. This air performs total heat exchange with the air in the indoor space 4 guided to the total heat exchanger 32 through the indoor air discharge passage 31g. The air in the indoor space 4 guided by the indoor air discharge channel 31g is lower in both temperature and humidity than the air guided to the total heat exchanger 32 by the outside air introduction channel 31a (position a column, position g in Table 1). The high-temperature and high-humidity air guided by the outside air introduction flow path 31a becomes air with reduced temperature and humidity (see column b in Table 1).

  Next, the air whose temperature and humidity are reduced is led to the sensible heat exchanger 33, and sensible heat exchange is performed with the air led through the sensible heat exchanger reflux passage 31e. Since the air that has passed through the outer surface of the second heat exchanger 25 has a low temperature and low humidity as will be described later, only the temperature of the air guided from the total heat exchanger 32 is further lowered while maintaining the absolute humidity. In this state, it is led to the outer surface of the second heat exchanger 25 (see column position c in Table 1).

  In the second heat exchanger 25, heat is exchanged between the low-temperature refrigerant passing through the inside and the air passing through the outer surface. Since the air passing through the outer surface is cooled by this heat exchange, moisture (water vapor) contained in the air is condensed on the outer surface of the second heat exchanger 25 and removed. The air that has passed through the outer surface of the second heat exchanger 25 becomes air having a low temperature and a low absolute humidity (see column position d (position e) in Table 1).

The air that has passed through the second heat exchanger 25 is guided to the sensible heat exchanger 33 via the humidifier 34 and the sensible heat exchanger reflux passage 31e , and from the total heat exchanger 32 in this sensible heat exchanger 33. It is heated while maintaining the absolute humidity by sensible heat exchange with the introduced air, and is led to the indoor space 4 (see column position f in Table 1).

  The air guided to the indoor space 4 rises in both temperature and absolute humidity under the influence of heat and water vapor generated by a person living in the indoor space 4 and heat generated by a personal computer, audio equipment, etc. (Table 1). (See position g column).

  The air in the indoor space 4 is guided to the total heat exchanger 32 via the indoor air discharge flow path 31g, and performs total heat exchange with the outdoor air guided by the outdoor air introduction flow path 31a. Thereby, the air led from the indoor space 4 is in a state where both the temperature and the humidity are increased (see the position h column in Table 1).

  And the air which passed the total heat exchanger 32 is guide | induced to the outer surface of the 1st heat exchanger 22 via the 1st heat exchanger supply flow path 31h, and the refrigerant | coolant which passes the inside of the 1st heat exchanger 22 Exchange heat with Since the refrigerant passing through the inside of the first heat exchanger 22 has a high temperature and high pressure, the air guided to the outer surface of the first heat exchanger 22 is in a state in which the temperature is raised and discharged to the outside. (See column position i in Table 1).

  Next, the humidification operation mode in winter will be described. Table 2 shows experimental data during the humidifying operation, and positions a to i in Table 2 correspond to positions a to i in FIG.

まず、冷凍回路２を中心に説明する。図２に示すように、四方弁２７を操作し、圧縮機２６の高圧側２６１と第２熱交換器２５とが接続するように、また、圧縮機２６の低圧側２６２と第１熱交換器２２とが接続するように配管接続する。このように構成された冷凍回路２において、圧縮機２６を作動させることによって冷媒を圧縮して高圧にすることで冷媒の温度を上昇させる。圧縮機２６の作動により高温高圧となった冷媒は、第２熱交換器２５において放熱することで、第２熱交換器２５の外表面を通過する空気と熱交換する。この熱交換により、第２熱交換器２５の内部を通過する冷媒の温度は低下する。また、第２熱交換器２５の外表面を通過する空気は加熱される。

First, the refrigeration circuit 2 will be mainly described. As shown in FIG. 2, the four-way valve 27 is operated so that the high pressure side 261 of the compressor 26 and the second heat exchanger 25 are connected, and the low pressure side 262 of the compressor 26 and the first heat exchanger are connected. The pipe is connected so that 22 is connected. In the refrigeration circuit 2 configured as described above, the refrigerant is compressed to a high pressure by operating the compressor 26 to increase the temperature of the refrigerant. The refrigerant that has become high temperature and high pressure due to the operation of the compressor 26 radiates heat in the second heat exchanger 25, thereby exchanging heat with the air passing through the outer surface of the second heat exchanger 25. Due to this heat exchange, the temperature of the refrigerant passing through the inside of the second heat exchanger 25 decreases. Further, the air passing through the outer surface of the second heat exchanger 25 is heated.

  The refrigerant that has dissipated heat by passing through the second heat exchanger 25 is guided to the expansion valve 24. The temperature of the refrigerant guided to the expansion valve 24 is further lowered as the pressure decreases, and the refrigerant is guided to the first heat exchanger 22 via the liquid receiver 23.

  The refrigerant guided to the first heat exchanger 22 exchanges heat with the air passing through the outer surface of the first heat exchanger 22 to receive heat from the air and become saturated vapor to the compressor 26. The refrigeration circuit 2 is circulated so as to repeat the above steps again. Since the air that passes through the outer surface of the first heat exchanger 22 is absorbed by the refrigerant that passes through the inside of the first heat exchanger 22, the temperature of the air decreases.

  Next, the air conditioning circuit 3 will be mainly described. First, outdoor air is led to the total heat exchanger 32 by the outside air introduction channel 31a. This air performs total heat exchange with the air in the indoor space 4 guided to the total heat exchanger 32 through the indoor air discharge passage 31g. Since the temperature and absolute humidity of the indoor space 4 are higher than those of the outdoor air (refer to the position a column and the position g column in Table 2), the low-temperature and low-humidity air guided by the outdoor air introduction channel 31a is Both temperature and humidity can be increased (see position b column in Table 2).

  Next, the air whose temperature and absolute humidity have been increased is guided to the sensible heat exchanger 33, and sensible heat exchange is performed with the air guided through the sensible heat exchanger reflux passage 31e. Since the air that has passed through the outer surface of the second heat exchanger 25 has a high temperature as will be described later (see the position e column in Table 2), the air guided from the total heat exchanger 32 maintained absolute humidity. Only the temperature remains higher and is led to the outer surface of the second heat exchanger 25 (see the position c column in Table 2).

  In the second heat exchanger 25, heat exchange is performed between the high-temperature and high-pressure refrigerant passing through the inside and the air passing through the outer surface. By this heat exchange, the air passing through the outer surface is heated (see column position d in Table 2).

  The heated air is guided to the humidifier 34 via the humidifier supply channel 31d and receives the supply of water vapor, so that the absolute humidity of the air is increased (see column position e in Table 2). That is, the air that has passed through the outer surface of the second heat exchanger 25 and the humidifier 34 is in a high-temperature and high-humidity state (see position e column in Table 2). Thus, during the humidification operation, the air is preheated by the second heat exchanger 25 through which the high-temperature refrigerant passes through before the air passes through the humidifier 34, and thus passes through the humidifier 34. In this case, a large amount of water vapor can be contained in the air, and the air can be efficiently humidified.

  The hot and humid air that has passed through the humidifier 34 is guided to the sensible heat exchanger 33, and in this sensible heat exchanger 33, the absolute humidity is reduced by sensible heat exchange with the low temperature air guided from the total heat exchanger 32. It is cooled while being maintained and guided to the indoor space 4 (see the position f column in Table 2). The air supplied to the indoor space 4 is in a low temperature and high humidity state.

  The air guided to the indoor space 4 rises in both temperature and absolute humidity under the influence of heat and moisture (humidity) generated by a person living in the indoor space 4 and heat generated by a personal computer, audio equipment, and the like. (See position g column in Table 2).

  The air in the indoor space 4 is guided to the total heat exchanger 32 via the indoor air discharge flow path 31g, and performs total heat exchange with the outdoor air guided by the outdoor air introduction flow path 31a. Thereby, the air led from the indoor space 4 is in a state in which both the temperature and the absolute humidity are lowered (see the position h column in Table 2).

  And the air which passed the total heat exchanger 32 is guide | induced to the outer surface of the 1st heat exchanger 22 via the 1st heat exchanger supply flow path 31h, and the refrigerant | coolant which passes the inside of the 1st heat exchanger 22 Exchange heat with Since the refrigerant passing through the inside of the first heat exchanger 22 has a low temperature, the air guided to the outer surface of the first heat exchanger 22 is in a state where the temperature is lowered and is discharged to the outside (Table 2 position i column).

  According to the air conditioning equipment 1 according to the present embodiment, during the dehumidifying operation, the sensible heat exchanger 33 passes the outdoor air that has passed through the total heat exchanger 32 and the outer surface of the second heat exchanger 25. Since the sensible heat exchange is performed with the low-temperature air from which the moisture has been removed, the moisture contained in the air supplied to the indoor space 4 is maintained in a small state (dehumidified state) The temperature of the air can be efficiently reheated, and the reheat load can be reduced. Furthermore, since the temperature of the air led to the outer surface of the second heat exchanger 25 can be changed to a low state by the action of the sensible heat exchanger 33, the operation of the second heat exchanger 25 functioning as a cooling coil is performed. The load can be reduced.

  Further, during the humidifying operation, the temperature of the air can be efficiently lowered by the action of the sensible heat exchanger 33 while maintaining a high humidity in the air supplied to the indoor space 4. Furthermore, since the temperature of the air led to the outer surface of the second heat exchanger 25 can be heated using the thermal energy of the air that has passed through the outer surface of the second heat exchanger 25, the heating coil It is possible to efficiently reduce the operating load of the second heat exchanger 25 that functions as a high energy saving effect.

  In addition, the air-conditioning equipment 1 according to the present embodiment has a sensible heat between the outdoor air guided by the outdoor air introduction channel 31a and the air of the indoor space 4 guided by the indoor air discharge channel 31g. A total heat exchanger 32 for exchanging latent heat is provided. Thereby, the thermal energy of the air exhausted from the indoor space 4 to the outside is effectively used, and the temperature and humidity of the outdoor air are adjusted to a desired state and led to the sensible heat exchanger 33. Therefore, the operating load of the sensible heat exchanger 33 can be reduced. As a result, a significant energy saving effect can be obtained in both the dehumidifying operation and the humidifying operation, and the running cost of the air-conditioning equipment 1 can be further reduced.

  Moreover, according to the air conditioning equipment 1 according to the present embodiment, during the dehumidifying operation, the second heat exchanger is utilized by using the air that is led from the indoor space 4 to the total heat exchanger 32 and discharged to the outside. Since the first heat exchanger 22 is configured to lower the temperature of the refrigerant that dehumidifies the air guided to the indoor space 4 at 25, the refrigeration circuit 2 can be operated efficiently. As a result, the entire air conditioning facility 1 can be operated with high efficiency.

  Further, during the humidification operation, the air that has been led from the indoor space 4 to the total heat exchanger 32 and discharged to the outside is used to heat the air before being led to the indoor space 4 in the second heat exchanger 25. Since the first heat exchanger 22 is configured to raise the temperature of the refrigerant that performs the refrigeration circuit, it is possible to operate the refrigeration circuit 2 efficiently in the same manner as in the dehumidifying operation. It becomes possible to operate with high efficiency.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. For example, as shown in FIG. 3, there is provided spraying means 5 for spraying condensed water (drain water) generated on the outer surface of the second heat exchanger 25 on the outer surface of the first heat exchanger 22 during the dehumidifying operation. It can also be configured as follows. The spray means 5 includes a spray nozzle 51 that sprays drain water on the outer surface of the first heat exchanger 22, and a drain supply pipe 52 that guides drain water generated in the second heat exchanger 25 to the spray nozzle 51. I have. A pump (not shown) that pumps drain water is provided in the middle of the drain supply pipe 52. The drain water sprayed on the outer surface of the first heat exchanger 22 by the spraying means 5 undergoes heat exchange with the high-temperature refrigerant passing through the inside of the first heat exchanger 22 and evaporates. When drain water evaporates, the amount of latent heat of the drain water is taken away from the refrigerant, so that the temperature of the refrigerant passing through the first heat exchanger 22 can be further reduced. As a result, the refrigeration circuit 2 can be operated efficiently, and the efficiency of the entire air conditioning equipment 1 can be increased. In addition, as a result of the effective use of the drain water generated in the second heat exchanger 25, there is no need to provide a drain pipe for exhausting the drain water to the outside, and the efficiency of the installation work of the air conditioning equipment 1 is improved. It becomes possible.

  Further, for example, as shown in FIG. 4, a part of the air guided from the indoor space 4 to the total heat exchanger 32 is directly transferred to the outer surface of the first heat exchanger 22 without passing through the total heat exchanger 32. The first air flow path 31j that leads to the air flow path 31 may be provided in the air flow path 31. With such a configuration, the air whose temperature has been changed from the indoor space 4 to the total heat exchanger 32 can be mixed with air having a temperature different from the temperature of the air. By controlling the amount of air that passes through and is supplied to the outer surface of the first heat exchanger 22, the temperature of the air guided to the outer surface of the first heat exchanger 22 can be changed. As a result, the refrigerant passing through the inside of the first heat exchanger 22 can be adjusted to a desired temperature. For example, when the air conditioning equipment 1 is dehumidified, it is removed by the second heat exchanger 25. It becomes possible to appropriately change the amount of moisture in the air. In addition, when the air conditioning equipment 1 is humidified, the temperature after heating of the air heated by the second heat exchanger 25 can be changed, and the amount of water vapor given to the air by the humidifier 34 Can be adjusted as appropriate.

  For example, as shown in FIG. 4, a part of the air whose humidity is adjusted by the second heat exchanger 25 or the humidifier 34 is directly guided to the indoor space 4 without passing through the sensible heat exchanger 33. You may comprise so that the air flow path 31 may be equipped with the 2nd bypass flow path 31k. With such a configuration, the air whose temperature has changed after passing through the sensible heat exchanger 33 can be mixed with air having a temperature different from the temperature of the air. By controlling the amount of air supplied to the space 4, the indoor space 4 can be set to a desired temperature.

  Moreover, in the said embodiment, although the air conditioning equipment 1 is comprised so that the humidifier 34 may be provided, for example, when a humidification operation is not performed, the humidifier 34 is abbreviate | omitted and the air conditioning equipment. 1 can also be configured.

  Further, as shown in FIG. 6, in order to use the condensed water (drain water) generated on the outer surface of the first heat exchanger 22 during the humidifying operation as a water supply source of water that is vaporized by the humidifying device 34. It is also possible to provide a humidifying drain supply pipe 6 which is a flow path for leading drain water generated in the one heat exchanger 22 to the humidifying device 34. Note that a pump (not shown) that pumps drain water is provided in the middle of the humidifying drain supply pipe 6. In this way, by effectively using the drain water discharged from the first heat exchanger 22 during the humidifying operation, the humidifying device 34 does not need to receive water from the outside of the air conditioning facility 1. The harmony equipment 1 can be obtained.

It is a schematic structure figure showing an example of the air harmony equipment concerning one embodiment of the present invention. It is a schematic block diagram in the case of carrying out humidification operation of the air conditioning equipment shown in FIG. It is a schematic block diagram which shows the modification of the air conditioning equipment shown in FIG. It is a schematic block diagram which shows the other modification of the air conditioning equipment shown in FIG. It is a schematic block diagram which shows the conventional air conditioning equipment. It is a schematic block diagram which shows the further another modification of the air conditioning equipment shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning equipment 2 Refrigeration circuit 21 Compressor 22 First heat exchanger 23 Receiver 24 Expansion valve 25 Second heat exchanger 26 Compressor 27 Four-way valve 3 Air conditioning circuit 31 Air flow path 32 Total heat exchanger 33 Sensible heat Exchanger 34 Humidifier 4 Indoor space 5 Spraying means 51 Spray nozzle 52 Drain supply pipe 6 Humidification drain supply pipe

Claims (4)

It is an air conditioner that adjusts the air guided from the outside and air-conditions the indoor space,
A compressor, a first heat exchanger, an expansion valve, and a second heat exchanger that are connected to each other by piping so that refrigerant circulation is reversible, and a refrigeration circuit that performs a refrigeration cycle;
A total heat exchanger that exchanges sensible heat and latent heat;
A sensible heat exchanger that exchanges sensible heat;
The outer surface of the total heat exchanger, the sensible heat exchanger, the second heat exchanger, the sensible heat exchanger, the indoor space, the total heat exchanger, and the outer surface of the first heat exchanger A flow path for flowing outdoor air in order,
Spraying means for spraying condensed water generated on the outer surface of the second heat exchanger to the outer surface of the first heat exchanger;
The total heat exchanger is configured to be able to exchange heat between air guided from the outside and air guided from the indoor space,
The sensible heat exchanger includes air guided from the total heat exchanger, and air returned from the sensible heat exchanger to the outer surface of the second heat exchanger and then returned to the sensible heat exchanger. It is configured to be able to exchange heat with
The first heat exchanger and the second heat exchanger can exchange heat between the air guided to the outer surface from the total heat exchanger and the sensible heat exchanger , respectively, and the refrigerant passing through the inside. Constructed air conditioning equipment. A humidifier capable of humidifying the air after passing through the outer surface of the second heat exchanger;
The air conditioning equipment according to claim 1, further comprising a flow path that guides condensed water generated on an outer surface of the first heat exchanger to the humidifier as a water supply source of the humidifier.   The air conditioner according to claim 1 or 2, wherein the flow path further includes a first bypass flow path that directly guides part of the air guided from the indoor space to the outer surface of the first heat exchanger.   The air conditioner according to any one of claims 1 to 3, wherein the flow path further includes a second bypass flow path that directly guides part of the air that has passed through the outer surface of the second heat exchanger to the indoor space. .

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