Air Conditioning System

Abstract

To adjust temperature and humidity, and efficiently operate a heat pump with a simple device configuration.SOLUTION: An air-conditioning system controls the flow direction of a medium by route switching means 7, the open state of a first expansion valve 5 and a second expansion valve 6, and the operation of a throttling state; separately controls latent heat and sensible heat of fluid heat-exchanged with a first heat exchanger 1, a second heat exchanger 2, and a third heat exchanger 3; regulates temperature and humidity; and operates a heat pump efficiently with a simple device configuration.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a heat exchanger (desiccant heat exchanger) that uses an adsorbent (desiccant), and an air conditioning system that uses a heat pump system to regulate temperature and humidity while also providing ventilation. [Background technology]

[0002] Conventionally, air conditioning systems using an adsorbent (desiccant) that adsorbs moisture from a fluid by contacting the fluid under cooling conditions and desorbs the adsorbed moisture by contacting the fluid under heating conditions have been known (for example, Patent Document 1).

[0003] By combining an air conditioning system using an adsorbent with a heat pump system that compresses the medium and circulates it through a heat exchanger, it is possible to build an air conditioning system that can optimally adjust humidity.In addition, by using a temperature control device to adjust the air temperature, it is possible to build an air conditioning system that can optimally adjust humidity during cooling and heating.

[0004] In a heat pump system, during cooling operation (e.g., in summer), the indoor air is dehumidified and cooled using the heat of evaporation of the refrigerant in the evaporator, and during heating operation (e.g., in winter), the indoor air is heated using the heat of condensation of the refrigerant in the condenser. During dehumidification operation, the evaporation temperature of the refrigerant must be set low, so the temperature of the air that flows through the evaporator becomes low, and the air must be heated to a specified temperature (e.g., 20 to 25 degrees). In addition, when humidifying with a heat pump system, a separate humidifying device is required.

[0005] In recent years, there has been growing interest in reducing indoor airborne particles, and attention has been focused on the importance of air exchange (ventilation). In reality, there is an increasing demand for ventilation even during cooling and heating operation, but the current situation is that ventilation reduces the cooling and heating effects. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-155941 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in consideration of the above situation, and aims to provide an air conditioning system that can regulate temperature and humidity, operate a heat pump efficiently with a simple equipment configuration, and regulate temperature and humidity while simultaneously providing ventilation. [Means for solving the problem]

[0008] In order to achieve the above object, the air conditioning device of the present invention according to claim 1 comprises a first heat exchanger in which a medium flows through a heat transfer tube and is arranged in a location to be air-conditioned, a second heat exchanger in which an adsorbent is applied to the outside of the heat transfer tube through which the medium flows, a first expansion valve provided in a path of the medium on one side of the second heat exchanger and whose operation is controlled between an open state and a throttled state, a second expansion valve provided in a path of the medium on the other side of the second heat exchanger and whose operation is controlled between an open state and a throttled state, compression means for compressing the medium, and path switching means for switching the supply of a compressed medium, which is the medium compressed by the compression means, to the first heat exchanger or the first expansion valve, wherein the second expansion valve is connected to one side of the first heat exchanger and the path switching means is connected to the other side of the first heat exchanger. and the path switching means is connected to the first expansion valve via a third heat exchanger, the second heat exchanger is housed in a casing, the casing is provided with an outside air inlet from the outside, a return air inlet from the part to be air-conditioned, an exhaust outlet to the outside, and a supply air outlet to the part to be air-conditioned, and at least one of an instruction for an operation mode, information on the humidity of the fluid to be blown to the part to be air-conditioned, information on the temperature of the fluid to be blown to the part to be air-conditioned, and information on the operation time of the operation mode is input, and a control means is provided for controlling the operation of the path switching means, the first expansion valve, the second expansion valve, and the open / closed state of the outside air inlet, the return air inlet, the exhaust outlet, and the supply air outlet based on the input information.

[0009] In the present invention according to claim 1, the compressed medium is supplied to the first heat exchanger or the third heat exchanger (first expansion valve) by the path switching means. When the compressed medium is supplied to the third heat exchanger (first expansion valve), the temperature of the medium in the second heat exchanger is controlled by the operation of the first expansion valve, and the second heat exchanger can be operated as an evaporator that evaporates the medium (in this case, moisture in the fluid can be adsorbed onto the adsorbent of the second heat exchanger: dehumidification), or as a condenser that condenses the medium (in this case, moisture adsorbed to the adsorbent of the second heat exchanger can be released: adsorbent regeneration). The temperature of the medium is lowered by operating the second expansion valve in a throttling state, and the first heat exchanger is operated as an evaporator (cooling).

[0010] When a compressed medium is supplied to the first heat exchanger, a high-temperature medium is sent to the first heat exchanger, which operates as a condenser (heating). Depending on the operation of the second expansion valve in the throttling state and the open state, the second heat exchanger can operate either as an evaporator that evaporates the medium (in this case, the moisture in the fluid can be adsorbed onto the adsorbent of the second heat exchanger: humidification), or as a condenser that condenses the medium (in this case, the moisture adsorbed on the adsorbent of the second heat exchanger can be released: humidification).

[0011] Therefore, by controlling the path switching means, the first heat exchanger adjusts the temperature for cooling and heating (control of sensible heat), and by controlling the operation of the first and second expansion valves, the second heat exchanger performs dehumidification and humidification (control of latent heat), making it possible to individually control the latent heat and sensible heat of the fluid undergoing heat exchange.This makes it possible to adjust the temperature and humidity, and to operate the heat pump efficiently with a simple equipment configuration.

[0012] Then, while operating the cooling, heating, dehumidification, and humidification functions with the temperature regulated, fluid is introduced into the inside of the casing (second heat exchanger) from either the outside air inlet or the return air inlet, and the fluid is discharged from the exhaust air outlet or the intake air outlet to the outside of the casing (outside, the part to be air-conditioned), and ventilation can be performed without using temperature regulation equipment through the second heat exchanger coated with an adsorbent.

[0013] This allows for temperature and humidity regulation, enables the heat pump to operate efficiently with a simple equipment configuration, and makes it possible to regulate temperature and humidity while simultaneously ventilating.

[0014] The air conditioning system of the present invention according to claim 2 is the air conditioning system of claim 1, further comprising an inlet switching means for connecting the outside air inlet section of the casing to the inlet flow hole or the return air inlet section to the inlet flow hole by sliding an inlet sliding plate having one inlet flow hole, and an outlet switching means for connecting the exhaust outlet section of the casing to the outlet flow hole or the supply air outlet section to the outlet flow hole by sliding an outlet sliding plate having one outlet flow hole, and the control means controls the sliding movement of the inlet sliding plate and the outlet sliding plate to control the open / closed states of the outside air inlet section, the return air inlet section, the exhaust outlet section, and the supply air outlet section.

[0015] In the present invention according to claim 2, the sliding movement of the inlet sliding plate is controlled to connect the inlet circulation holes to the outside air inlet or the return air inlet, thereby supplying outside air or return air into the casing, and the sliding movement of the outlet sliding plate is controlled to connect the outlet circulation holes to the exhaust outlet or the supply air outlet, thereby exhausting air to the outside or to the part to be air-conditioned. Therefore, the ventilation flow can be arbitrarily controlled according to the operation of cooling, heating, dehumidifying, or humidifying by the switching means (inlet switching means, outlet switching means) having a simple configuration.

[0016] Furthermore, the air conditioning system of the present invention according to claim 3 is characterized in that in the air conditioning system described in claim 2, the operating mode has a dehumidification / ventilation / cooling operating mode in which outside air is circulated from the outside air inlet to the second heat exchanger, which adsorbs moisture onto the adsorbent, and the outside air that has circulated through the second heat exchanger is circulated from the intake air outlet to the first heat exchanger, which serves as an evaporator.

[0017] In the present invention according to claim 3, the dehumidifying, ventilation and cooling operation modes can be used to perform dehumidifying, ventilation and cooling operations using the second heat exchanger coated with an adsorbent.

[0018] Furthermore, the air conditioning system of the present invention according to claim 4 is characterized in that, in the air conditioning system according to claim 2 or claim 3, it has a humidification / ventilation / heating operation mode in which outside air is circulated from the outside air inlet to the second heat exchanger, which desorbs moisture from the adsorbent, and the outside air that has circulated through the second heat exchanger is circulated from the supply air outlet to the first heat exchanger, which serves as a condenser.

[0019] In the present invention according to claim 4, the humidification, ventilation and heating operation modes can be performed using the second heat exchanger coated with an adsorbent.

[0020] Furthermore, the air conditioning system of the present invention according to claim 5 is the air conditioning system according to claim 4, characterized in that it is provided with a bypass path that bypasses the heat transfer tubes of the first heat exchanger, the second heat exchanger is an evaporator, the third heat exchanger is a condenser, and has a defrosting operation mode in which the medium is circulated through the bypass path without circulating through the heat transfer tubes of the first heat exchanger.

[0021] In the present invention according to claim 5, the flow of the medium is reversed during the heating operation mode, so that the second heat exchanger serves as an evaporator and the third heat exchanger serves as a condenser, and the medium passes through a bypass path to bypass the first heat exchanger (indoor heat exchanger). The adsorbent in the second heat exchanger adsorbs moisture, and the heat of adsorption generated at that time can be used to remove frost that has adhered to the third heat exchanger.

[0022] Furthermore, the air conditioning system of the present invention according to claim 6 is the air conditioning system according to claim 4 or claim 5, wherein the casing has a second exhaust outlet portion formed adjacent to the exhaust outlet portion, the outlet switching means slides the outlet slide plate so that the outlet flow hole and the second exhaust outlet portion are connected, the third heat exchanger has a frost suppression function to which fluid from the second exhaust outlet portion is sent, and the operating mode has a frost suppression operating mode in which return air from the return air inlet portion or outside air from the outside air inlet portion is circulated through the second heat exchanger, which adsorbs moisture to the adsorbent, and the return air that has circulated through the second heat exchanger is supplied to the frost suppression function from the second exhaust outlet portion.

[0023] In the present invention of claim 6, the outlet slide plate is operated to connect the outlet flow hole and the second exhaust outlet, and return air from the conditioned area or outside air from the outside air inlet is circulated through the second heat exchanger, which adsorbs moisture into an adsorbent, from the return air inlet.The return air that has circulated through the second heat exchanger or the outside air from the outside air inlet that has circulated through the second heat exchanger, i.e., dry air, is supplied from the second exhaust outlet to the frost formation suppression function of the third heat exchanger, thereby suppressing frost formation on the third heat exchanger.

[0024] As a frost suppression function, for example, a mechanism can be applied which is provided on the upper surface of the third heat exchanger and has one inlet through which fluid flows in from the second exhaust outlet, and multiple outlets which distribute the fluid flowing in from the inlet in the longitudinal direction of the third heat exchanger and blow it toward the third heat exchanger. [Effects of the Invention]

[0025] The air conditioning system of the present invention can regulate temperature and humidity, can efficiently operate a heat pump with a simple equipment configuration, and can regulate temperature and humidity while simultaneously providing ventilation. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is an overall external view of an air conditioning system according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] 1 is a conceptual configuration diagram of an air conditioning system according to an embodiment of the present invention. [Figure 4] FIG. 10 is an external view illustrating the inlet switching means. [Figure 5] 10A and 10B are explanatory diagrams illustrating the operation of the entrance slide plate. [Figure 6] FIG. 10 is an external view illustrating the outlet switching means. [Figure 7] FIG. 10 is an explanatory diagram of the operation of the exit slide plate. [Figure 8] FIG. 2 is an external view illustrating components of the frost control function. [Figure 9] FIG. 4 is a table illustrating the operation of each element in the operation mode. [Figure 10] This is a conceptual diagram of the dehumidification, ventilation, and cooling operation modes. [Figure 11] This is a conceptual diagram of the dehumidification and ventilation operation mode. [Figure 12] This is a conceptual diagram of the dehumidification and cooling operation mode. [Figure 13] FIG. 10 is a conceptual configuration diagram of a dehumidifying operation mode. [Figure 14] This is a conceptual diagram of the humidification, ventilation, and heating operation modes. [Figure 15] This is a conceptual diagram of the humidification and ventilation mode. [Figure 16] FIG. 1 is a conceptual diagram of the humidification and heating operation mode. [Figure 17] FIG. 10 is a conceptual configuration diagram of a humidification operation mode. [Figure 18] FIG. 10 is a conceptual configuration diagram of a defrosting operation mode. DETAILED DESCRIPTION OF THE INVENTION

[0027] The overall configuration of an air conditioning system according to one embodiment of the present invention will be described with reference to FIGS.

[0028] Figure 1 shows a schematic external view of the outdoor unit and indoor unit to explain the overall air conditioning system according to one embodiment of the present invention, Figure 2 shows a schematic plan view of the outdoor unit, Figure 3 shows the conceptual system configuration of the air conditioning system according to one embodiment of the present invention, Figure 4 shows an exploded oblique view of the casing to explain the inlet switching means, Figure 5 shows the operation of the inlet slide plate, Figure 6 shows an exploded oblique view of the casing to explain the outlet switching means, Figure 7 shows the operation of the outlet slide plate, and Figure 8 shows the external view to explain the equipment components of the frost control function.

[0029] The overall appearance of the air conditioning system will be described based on Figures 1 and 2.

[0030] As shown in the figure, the air conditioning system of the present invention comprises an indoor unit 11 having a first heat exchanger 1 through which a medium flows through a heat transfer tube, and an outdoor unit 12 having a second heat exchanger 2 in which an adsorbent is applied to the outside of the heat transfer tube through which the medium flows. The second heat exchanger 2 is housed in a casing 13. The outdoor unit 12 also comprises a third heat exchanger 3, an air fan 14, and a compressor 4 as a compression means for compressing the medium.

[0031] Refrigerant is sent between the first heat exchanger 1 of the indoor unit 11 and the second heat exchanger 2 and third heat exchanger 3 of the outdoor unit 12 via refrigerant piping 15. Air (return air, supply air) can be supplied between the indoor unit 11 (indoors) and the outdoor unit 12 via air piping 16. A suppression device 17, which is a member that implements a frost suppression function, is provided on the upper surface of the third heat exchanger 3.

[0032] The casing 13 of the second heat exchanger 2 is provided with an outside air inlet 21 (OA) that takes in outside air, and a return air inlet 22 (RA) that is connected to one of the air pipes 16. It also is provided with an exhaust outlet 23 (EA) that communicates with the outside (opens toward the space between the third heat exchanger 3 and the air fan 14), and a supply air outlet 24 (SA) to which the other of the air pipes 16 is connected. Furthermore, a second exhaust outlet 25 (EA2) is formed adjacent to the exhaust outlet 23, and the second exhaust outlet 25 (EA2) is connected to the inlet of the suppression device 17.

[0033] As will be described in detail later, the outside air inlet section 21 (OA) and the return air inlet section 22 (RA) are switched by an inlet switching means 27 that operates a single inlet slide plate 26. The exhaust air outlet section 23 (EA), the supply air outlet section 24 (SA), and the second exhaust air outlet section 25 (EA2) are switched by an outlet switching means 29 that operates a single outlet slide plate 28. Therefore, with a simple mechanism (without enlarging the mechanism), it is possible to control the opening and closing of two inlets and three outlets.

[0034] The configuration of the air conditioning system medium and air system will be explained based on Figure 3.

[0035] As shown in the figure, a first expansion valve 5 is provided in the path on one side of the second heat exchanger 2 (the path for the medium on the opposite side from the first heat exchanger 1), and the operation of the first expansion valve 5 is controlled to be in an open state (open) or a throttled state (throttled). Also, a second expansion valve 6 is provided in the path on the other side of the second heat exchanger 2 (the path for the medium on the first heat exchanger 1 side), and the operation of the second expansion valve 6 is controlled to be in an open state or a throttled state.

[0036] As described above, the compressor 4 is provided to compress a medium, and the supply of the medium (compressed medium) compressed by the compressor 4 is switched to either the first heat exchanger 1 or the side of the first expansion valve 5 (third heat exchanger 3) via the path switching means 7. The second expansion valve 6 is connected to one side of the first heat exchanger 1 (the path of the medium on the side of the second heat exchanger 2), and the path switching means 7 is connected to the other side of the first heat exchanger 1 (the path of the medium on the opposite side to the second heat exchanger 2). The third heat exchanger 3 is disposed between the path switching means 7 and the first expansion valve 5.

[0037] As will be described in detail later, the path switching means 7 is configured with a four-way valve having four ports: a port connected to the outlet side of the compressor 4, a port connected to the inlet side of the compressor 4, a port connected to the first heat exchanger 1, and a port connected to the third heat exchanger 3. By switching the four-way valve, a state is established in which the compressed medium on the outlet side of the compressor 4 is supplied to the third heat exchanger 3, and the medium from the first heat exchanger 1 is supplied to the inlet side of the compressor 4 (an operation mode using cooling). By switching the four-way valve, a state is established in which the compressed medium on the outlet side of the compressor 4 is supplied to the first heat exchanger 1, and the medium from the third heat exchanger 3 is supplied to the inlet side of the compressor 4 (an operation mode using heating).

[0038] For example, the first heat exchanger 1 (second heat exchanger 2) exchanges heat with return air from the room, which is the part to be air-conditioned, and the cooled fluid is sent into the room, resulting in a cooling state. Alternatively, the first heat exchanger 1 (second heat exchanger 2) exchanges heat with return air from the room, which is the part to be air-conditioned, and the heated fluid is sent into the room, resulting in a heating state. Alternatively, outside air is sent to the second heat exchanger 2, and moisture is adsorbed onto the adsorbent, or moisture is desorbed from the adsorbent.

[0039] The control of the operation of the first expansion valve 5 and the second expansion valve 6 in the throttling state and open state, and the control of the switching state of the path switching means 7 are controlled by commands from the control means 9. The control means 9 receives input of instruction information for the operation mode, information on the humidity of the fluid to be blown to the air-conditioned area (room), and information on the temperature of the fluid to be blown to the air-conditioned area (room). Information on the operation time of the operation mode (e.g., timer information) is also input. Based on the information input to the control means 9, the operation of the first expansion valve 5 and the second expansion valve 6 in the throttling state and open state is controlled, and the switching state of the path switching means 7 is also controlled.

[0040] In the figure, reference numeral 31 denotes an indoor bypass path serving as a bypass route through which the medium bypasses the first heat exchanger 1, 32 denotes an indoor bypass valve that opens and closes the flow path of the indoor bypass path 31, 33 denotes an outdoor bypass path through which the medium bypasses the third heat exchanger 3, and 34 denotes an outdoor bypass valve that opens and closes the flow path of the outdoor bypass path 33. The opening and closing operations of the indoor bypass valve 32 and the outdoor bypass valve 34 are controlled by the control means 9.

[0041] For example, cooling and heating are switched based on the instruction information for the operation mode, dehumidification and humidification are switched based on the humidity information of the fluid blown into the room, and dehumidification and humidification are switched based on the temperature information of the fluid blown into the room. Furthermore, the presence or absence of dehumidification is switched based on the information on the operation time of the operation mode (total operation time of dehumidification). Also, the inlet switching means 27 and the outlet switching means 29 are switched as necessary to ventilate the room or to perform an operation to remove frost from the third heat exchanger 3, which is the outdoor heat exchanger.

[0042] In the above air conditioning system, the compressed medium is supplied to the first heat exchanger 1 or the third heat exchanger 3 by the path switching means 7. Depending on the flow direction of the compressed medium and the operating conditions (open state, throttle state) of the first expansion valve 5 and the second expansion valve 6, the first heat exchanger 1 and the second heat exchanger 2 operate as a condenser or an evaporator.

[0043] Therefore, by controlling the path switching means 7, the first heat exchanger 1 adjusts the temperature for cooling and heating (controls the sensible heat), and the second heat exchanger 2 performs dehumidification and humidification (controls the latent heat), making it possible to individually control the latent heat and sensible heat of the fluid being heat exchanged. This makes it possible to adjust the temperature and humidity, and to operate the heat pump efficiently with a simple equipment configuration.

[0044] The above-mentioned operating modes include a cooling / dehumidification operating mode in which return air from the room is circulated through the first heat exchanger 1, which is used as an evaporator, and the second heat exchanger 2, which adsorbs moisture onto an adsorbent; a cooling operating mode in which return air from the room is circulated through the first heat exchanger 1, which is used as an evaporator; a heating / humidification operating mode in which return air from the room is circulated through the first heat exchanger 1, which is used as a condenser, and the second heat exchanger 2, which desorbs moisture from the adsorbent; and a heating operating mode in which return air from the room is circulated through the first heat exchanger 1, which is used as a condenser.

[0045] Furthermore, the unit has a dehumidification / ventilation / cooling operation mode for ventilating the room, i.e., it circulates outside air through the second heat exchanger 2, which adsorbs moisture onto an adsorbent, and then circulates the outside air that has circulated through the second heat exchanger 2 to the first heat exchanger 1, which serves as an evaporator.

[0046] The unit also has a humidification / ventilation / heating operation mode for ventilating the room, in which outside air is circulated through the second heat exchanger 2, which desorbs moisture from the adsorbent, and the outside air that has circulated through the second heat exchanger 2 is circulated through the first heat exchanger 1, which serves as a condenser.

[0047] The system also has a defrosting operation mode in which the medium is reversed during the heating operation mode, with the second heat exchanger 2 used as an evaporator and the third heat exchanger 3 used as a condenser, and the medium is circulated through the indoor bypass path 31 to bypass the heat transfer tube of the first heat exchanger 1. That is, during the heating operation mode, the system has a defrosting operation mode in which moisture is adsorbed from the return air or outside air that has circulated through the second heat exchanger 2, and the heat of adsorption is used to remove frost from the third heat exchanger 3.

[0048] In the cooling operation mode described above, outside air is circulated through the second heat exchanger 2, which desorbs moisture from the adsorbent, and the moisture is discharged as a gas to regenerate the adsorbent, thereby preventing water from accumulating in the second heat exchanger 2. In addition, in the heating operation mode, outside air is circulated through the second heat exchanger 2, which adsorbs moisture onto the adsorbent, and the moisture is adsorbed to replenish moisture for humidification.

[0049] The configuration of the inlet switching means 27 will be described with reference to FIGS.

[0050] As shown in Figure 4, an OA hole and an RA hole are formed in the fixed plate 13a of the casing 13 as inlet flow holes corresponding to an outside air inlet section 21 (OA) that takes in outside air and a return air inlet section 22 (RA) that is connected to one of the air pipes 16, and an inlet slide plate 26 is arranged between the outside air inlet section 21 (OA), the return air inlet section 22 (RA) and the fixed plate 13a.

[0051] A communication hole 26a is formed in the inlet slide plate 26, and the inlet slide plate 26 slides (slides) when driven by the inlet actuator 35. When driven by the inlet actuator 35, the inlet slide plate 26 is moved to a state where the outside air inlet section 21 (OA) communicates with the OA hole, as shown in Fig. 5(a). Also, as shown in Fig. 5(b), the inlet slide plate 26 is moved to a state where the return air inlet section 22 (RA) communicates with the RA hole (the operation of the open / close state is controlled).

[0052] As shown in Figure 6, the fixed plate 13b of the casing 13 has an EA hole, an SA hole, and an EA2 hole formed as outlet circulation holes corresponding to the exhaust outlet section 23 (EA) that communicates with the outside (opens toward the space between the third heat exchanger 3 and the air fan 14), the intake air outlet section 24 (SA) to which another air pipe 16 is connected, and the second exhaust outlet section 25 (EA2), and an outlet slide plate 28 is arranged between the exhaust outlet section 23 (EA), the intake air outlet section 24 (SA), the second exhaust outlet section 25 (EA2) and the fixed plate 13b.

[0053] A communication hole 28a is formed in the outlet slide plate 28, and the outlet slide plate 28 is slid (slid) by driving the outlet actuator 36 so that the exhaust outlet section 23 (EA) and the EA hole communicate with each other, as shown in Fig. 7(a). Also, as shown in Fig. 7(b), the outlet slide plate 28 is slid (slid) so that the supply outlet section 24 (SA) and the SA hole communicate with each other. Furthermore, as shown in Fig. 7(c), the outlet slide plate 28 is slid (slid) so that the second exhaust outlet section 25 (EA2) and the EA2 hole communicate with each other (the operation of the open / close state is controlled).

[0054] The suppression device 17 will be described with reference to Fig. 8. Fig. 8(a) is a perspective view of the suppression device 17, and Fig. 8(b) is a plan view of the suppression device 17.

[0055] As shown in the figure, the suppression device 17 disposed on the upper surface of the third heat exchanger 3 has a long gutter member 37, and multiple partitions 39 are formed in the longitudinal direction by partitions 38. One inlet hole 19 is formed in the gutter member 37, and the inlet hole 19 is connected to the second exhaust outlet 25 (EA2) (see FIG. 2, etc.) of the casing 13 (see FIG. 2, etc.) that houses the second heat exchanger 2 (see FIG. 2, etc.), and the exhaust fluid that has circulated through the second heat exchanger 2 (see FIG. 2, etc.) is sent therethrough.

[0056] Each of the many partitions 39 is provided with an outlet hole 20. The exhaust fluid sent to the inlet hole 19 is distributed to the partitions 39, and the exhaust fluid distributed to the many partitions 39 is supplied (blowed out) evenly from the outlet holes 20 to the front surface of the third heat exchanger 3 (see FIG. 1, etc.).

[0057] Furthermore, since the suppression device 17 is a device that evenly supplies exhaust fluid from the second exhaust outlet section 25 (EA2) (see Figure 2, etc.) to the front of the third heat exchanger 3 (see Figure 1, etc.), the placement position of the inlet hole 19, the condition of the partition section 39, etc. are not specific to the configuration shown in the figure, and various distribution mechanisms can be applied.

[0058] 9 to 18, specific conditions of the flow of the medium and air-conditioning fluid during operation with dehumidification and humidification in the above-mentioned air-conditioning system will be described.

[0059] The air conditioning system of this embodiment has a ventilation operation mode for ventilation only, a cooling and ventilation operation mode, a temperature control and ventilation operation mode (cooling, heating), a cooling operation mode for cooling only, a heating and ventilation operation mode, and a heating operation mode for heating only.

[0060] The air conditioning system of this embodiment has the following dehumidification and humidification operation modes: dehumidification-ventilation-cooling operation mode, dehumidification-ventilation operation mode, dehumidification-cooling operation mode, dehumidification operation mode, humidification-ventilation operation mode, humidification-heating operation mode, humidification operation mode, humidification operation mode, and defrosting operation mode, and in each operation mode, operation is performed by alternately repeating adsorption and desorption (during adsorption and desorption) of moisture on the adsorbent of the second heat exchanger 2. Furthermore, by operating the outlet slide plate 28 of the casing 13 that houses the second heat exchanger 2 and exhausting air from the second exhaust outlet portion 25, operation to suppress frost formation can be performed.

[0061] Figure 9 is a table explaining the operation of each element in the operation modes, Figure 10 shows the conceptual configuration of the dehumidification-ventilation-cooling operation mode, Figure 11 shows the conceptual configuration of the dehumidification-ventilation operation mode, Figure 12 shows the conceptual configuration of the dehumidification-cooling operation mode, Figure 13 shows the conceptual configuration of the dehumidification operation mode, Figure 14 shows the conceptual configuration of the humidification-ventilation-heating operation mode, Figure 15 shows the conceptual configuration of the humidification-ventilation operation mode, Figure 16 shows the conceptual configuration of the humidification-heating operation mode, Figure 17 shows the conceptual configuration of the humidification operation mode, and Figure 18 shows the conceptual configuration of the defrosting operation mode. Figures 10 to 17 (a) show the situation during adsorption, and (b) show the situation during desorption, while Figure 18 (a) shows the situation during ventilation and Figure 18 (b) shows the situation during non-ventilation.

[0062] As shown in each figure, the path switching means 7 is configured with a four-way valve 40 having four ports. That is, the four-way valve 40 of the path switching means 7 has four ports: a first port 41 connected to the outlet side (compressed medium discharge side) of the compressor 4, a second port 42 connected to the inlet side (medium inflow side) of the compressor 4, a third port 43 connected to the first heat exchanger 1, and a fourth port 44 connected to the third heat exchanger 3.

[0063] By switching the four-way valve, the first port 41 and the fourth port 44 are connected and the second port 42 and the third port 43 are connected, so that the compressed medium on the outlet side of the compressor 4 is supplied to the third heat exchanger 3 side and the medium from the first heat exchanger 1 is supplied to the inlet side of the compressor 4 (ON).

[0064] By switching the four-way valve, the first port 41 and the third port 43 are connected and the second port 42 and the fourth port 44 are connected, so that the compressed medium on the outlet side of the compressor 4 is supplied to the first heat exchanger 1 side and the medium from the third heat exchanger 3 (first expansion valve 5) is supplied to the inlet side of the compressor 4 (OFF). The dehumidification, ventilation and cooling operation modes will be explained based on Figures 9 and 10.

[0065] As shown in Figures 9 and 10(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is turned closed, and the outdoor bypass valve 34 is turned closed.

[0066] 10(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the first heat exchanger 1 operates as an evaporator. Outside air is then dehumidified and cooled through the second heat exchanger 2, sent to the first heat exchanger 1 inside the room, and supplied into the room.

[0067] As shown in Figures 9 and 10(b), during detachment, the path switching means 7 is set to the ON state, the second expansion valve 6 is set to the throttling state, the first expansion valve 5 is set to the open state, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the open state.

[0068] As shown in Figure 10(b), the compressed medium is sent clockwise in the figure, bypassing the third heat exchanger 3, the second heat exchanger 2 operating as a condenser, and the first heat exchanger 1 operating as an evaporator. Then, return air from the room passes through the second heat exchanger 2 to regenerate the adsorbent, and the humid air is exhausted outdoors.

[0069] In dehumidification, ventilation, and cooling operation mode, the room is cooled while the outside air is dehumidified and cooled before being supplied to the room. By dehumidifying and cooling the outside air before supplying it, it is possible to introduce outside air while improving indoor comfort, and ventilation can be performed without compromising comfort (while maintaining cooling).

[0070] The state of the dehumidification / ventilation operation mode will be explained based on Figs. 9 and 11.

[0071] As shown in Figures 9 and 11(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the outdoor air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is turned open, and the outdoor bypass valve 34 is turned closed.

[0072] As shown in Figure 11(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the outside air is dehumidified through the second heat exchanger 2 and sent to the first heat exchanger 1 inside the room to be supplied into the room.

[0073] As shown in Figures 9 and 11(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the open state, and the outdoor bypass valve 34 is set to the closed state.

[0074] 11(b), the compressed medium is sent counterclockwise in the figure, bypassing the first heat exchanger 1, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Outside air then passes through the second heat exchanger 2 to regenerate the adsorbent, and the humid air is exhausted outdoors.

[0075] In dehumidification and ventilation operation mode, the outside air can be dehumidified and supplied to the room without cooling the room. Because the room is not cooled, outside air can be introduced without cooling the room more than necessary, and ventilation can be performed while improving comfort (maintaining dehumidification).

[0076] The state of the dehumidifying / cooling operation mode will be described with reference to FIGS.

[0077] As shown in Figures 9 and 12(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is turned closed, and the outdoor bypass valve 34 is turned closed.

[0078] 12(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the first heat exchanger 1 operates as an evaporator. Return air from the room is dehumidified through the second heat exchanger 2, sent to the first heat exchanger 1 inside the room, cooled, and supplied into the room.

[0079] As shown in Figures 9 and 12(b), during detachment, the path switching means 7 is set to the ON state, the second expansion valve 6 is set to the throttling state, the first expansion valve 5 is set to the open state, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the open state.

[0080] 12(b), the compressed medium is sent clockwise in the figure, bypassing the third heat exchanger 3, the second heat exchanger 2 operating as a condenser, and the first heat exchanger 1 operating as an evaporator. Outside air then passes through the second heat exchanger 2 to regenerate the adsorbent, and the humid air is exhausted outdoors.

[0081] In dehumidification and cooling operation mode, the room is dehumidified and cooled without ventilation. Because ventilation is not performed, the room can be dehumidified and cooled quickly.

[0082] The state of the dehumidifying operation mode will be described with reference to FIGS.

[0083] As shown in Figures 9 and 13(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is turned open, and the outdoor bypass valve 34 is turned closed.

[0084] As shown in Figure 13(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the return air from the room is dehumidified through the second heat exchanger 2 and sent to the first heat exchanger 1 inside the room to be supplied into the room.

[0085] As shown in Figures 9 and 13(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the open state, and the outdoor bypass valve 34 is set to the closed state.

[0086] 13(b), the compressed medium is sent counterclockwise in the figure, bypassing the first heat exchanger 1, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Outside air then passes through the second heat exchanger 2 to regenerate the adsorbent, and the humid air is exhausted outdoors.

[0087] In dehumidification mode, the unit does not cool the room but instead dehumidifies the return air from the room and supplies it to the room. This prevents the room from being cooled more than necessary, improving comfort and energy efficiency.

[0088] The humidification, ventilation, and heating operation modes will be described with reference to Figures 9 and 14.

[0089] As shown in Figures 9 and 14(a), during adsorption, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the throttling state, the first expansion valve 5 is set to the open state, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the closed state.

[0090] As shown in Figure 14(a), the compressed medium is sent counterclockwise in the figure, and the first heat exchanger 1 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the third heat exchanger 3 operates as an evaporator. Then, the water vapor in the return air is adsorbed by the adsorbent in the second heat exchanger 2, and the return air from which the water vapor has been removed is exhausted to the outside.

[0091] As shown in Figures 9 and 14(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the outdoor air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the open state.

[0092] As shown in Figure 14(b), the compressed medium is sent counterclockwise in the figure, with the first heat exchanger 1 operating as a condenser, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Then, the water vapor from the adsorbent in the second heat exchanger 2 is desorbed into the outside air, and the humidified air is sent to the first heat exchanger 1, heated, and supplied into the room.

[0093] In humidification-ventilation-heating operation mode, the room is heated while the outside air is humidified and heated before being supplied to the room. By humidifying and heating the outside air before supplying it, it is possible to introduce outside air without compromising indoor comfort, and ventilation can be performed while improving comfort (while maintaining heating).

[0094] During adsorption in Fig. 14(a), by connecting the flow holes 28a of the outlet slide plate 28 to the second exhaust outlet section 25 (EA2) (see * at EA in Fig. 9), the outside air dehumidified by adsorption of water vapor by the adsorbent of the second heat exchanger 2 can be supplied to the suppression device 17. This makes it possible to suppress the formation of frost on the third heat exchanger 3 (outdoor heat exchanger) (frost suppression operation mode).

[0095] The state of the humidification / ventilation operation mode will be described with reference to Figs.

[0096] As shown in Figures 9 and 15(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is turned open, and the outdoor bypass valve 34 is turned closed.

[0097] As shown in Figure 15(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the water vapor in the return air is adsorbed by the adsorbent in the second heat exchanger 2, and the return air from which the water vapor has been removed is exhausted to the outside.

[0098] As shown in Figures 9 and 15(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the outdoor air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is set to the open state, and the outdoor bypass valve 34 is set to the closed state.

[0099] 15(b), the compressed medium is sent counterclockwise in the figure, bypassing the first heat exchanger 1, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Then, the water vapor from the adsorbent in the second heat exchanger 2 is desorbed into the outside air, and the humidified air is sent to the first heat exchanger 1 and supplied into the room.

[0100] In humidification and ventilation operation mode, the room is not heated, but the outside air is humidified and heated before being supplied to the room. Because the room is not heated, it is possible to introduce outside air without heating the room more than necessary, and ventilation can be performed while improving comfort (maintaining humidification).

[0101] The state of the humidifying and heating operation mode will be described with reference to FIGS.

[0102] As shown in Figures 9 and 16(a), during adsorption, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the throttling state, the first expansion valve 5 is set to the open state, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the closed state.

[0103] 16(a), the compressed medium is sent counterclockwise in the figure, the first heat exchanger 1 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the third heat exchanger 3 operates as an evaporator. Then, the water vapor in the outside air is adsorbed by the adsorbent in the second heat exchanger 2, and the air from which the water vapor has been removed is exhausted to the outside.

[0104] As shown in Figures 9 and 16(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is set to the closed state, and the outdoor bypass valve 34 is set to the closed state.

[0105] As shown in Figure 16(b), the compressed medium is sent counterclockwise in the figure, with the first heat exchanger 1 operating as a condenser, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Then, the water vapor from the adsorbent in the second heat exchanger 2 is desorbed into the return air, and the humidified return air is sent to the first heat exchanger 1, where it is heated and supplied into the room.

[0106] In humidification and heating operation mode, ventilation is not performed, and the return air is humidified and heated before being supplied to the room. Because ventilation is not performed, the room can be quickly humidified and heated.

[0107] During adsorption in Fig. 16(a), by connecting the flow holes 28a of the outlet slide plate 28 to the second exhaust outlet section 25 (EA2) (see * at EA in Fig. 9), the return air from which water vapor has been adsorbed by the adsorbent of the second heat exchanger 2 and dehumidified can be supplied to the suppression device 17. This makes it possible to suppress the formation of frost on the third heat exchanger 3 (outdoor heat exchanger) (frost suppression operation mode).

[0108] The state of the humidifying operation mode will be described with reference to FIGS.

[0109] As shown in Figures 9 and 17(a), during adsorption, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is turned open, and the outdoor bypass valve 34 is turned closed.

[0110] As shown in Figure 17(a), the compressed medium is sent in a clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the water vapor in the outside air is adsorbed by the adsorbent in the second heat exchanger 2, and the air from which the water vapor has been removed is exhausted to the outside.

[0111] As shown in Figures 9 and 17(b), during detachment, the path switching means 7 is set to the OFF state, the second expansion valve 6 is set to the open state, the first expansion valve 5 is set to the throttle state, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the supply air outlet section 24 (SA), the indoor bypass valve 32 is set to the open state, and the outdoor bypass valve 34 is set to the closed state.

[0112] As shown in Figure 17(b), the compressed medium is sent counterclockwise in the figure, bypassing the first heat exchanger 1, the second heat exchanger 2 operating as a condenser, and the third heat exchanger 3 operating as an evaporator. Then, the water vapor in the adsorbent in the second heat exchanger 2 is desorbed into the return air, and the humidified return air is sent to the first heat exchanger 1 and supplied into the room.

[0113] In humidification mode, the return air is humidified and supplied to the room, and only humidification is performed. Because ventilation is not performed, the room can be humidified quickly and the room is not heated more than necessary, which improves comfort and energy efficiency.

[0114] The state of the defrosting operation mode will be described with reference to FIGS.

[0115] As shown in Figures 9 and 18(a), during ventilation, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the return air inlet section 22 (RA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust air outlet section 23 (EA), the indoor bypass valve 32 is opened, and the outdoor bypass valve 34 is closed.

[0116] As shown in Figure 18(a), the compressed medium is sent in the clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the water vapor in the return air is adsorbed by the adsorbent in the second heat exchanger 2, and the return air is exhausted while providing heat to the second heat exchanger 2 used as an evaporator, and the third heat exchanger 3 operates as a condenser, and the frost that has adhered is removed by the heat of condensation of the refrigerant.

[0117] As shown in Figures 9 and 18(b), during non-ventilation, the path switching means 7 is turned on, the second expansion valve 6 is turned open, the first expansion valve 5 is turned throttled, the flow hole 26a of the inlet slide plate 26 is connected to the outside air inlet section 21 (OA), the flow hole 28a of the outlet slide plate 28 is connected to the exhaust outlet section 23 (EA), the indoor bypass valve 32 is opened, and the outdoor bypass valve 34 is closed.

[0118] 18(b), the compressed medium is sent in the clockwise direction in the figure, the third heat exchanger 3 operates as a condenser, the second heat exchanger 2 operates as an evaporator, and the medium bypasses the first heat exchanger 1. Then, the water vapor from the outside air is adsorbed by the adsorbent in the second heat exchanger 2, and heat is given to the second heat exchanger 2 used as an evaporator, and the outside air is exhausted, and the third heat exchanger 3 operates as a condenser, and the frost that has adhered is removed by the heat of condensation of the refrigerant.

[0119] In the defrosting operation mode, the adsorbent in the second heat exchanger 2 adsorbs moisture, and the heat of adsorption can be used to remove frost that has adhered to the outdoor heat exchanger. Furthermore, the moisture adsorbed by the adsorbent can be used for humidification, so no waste occurs.

[0120] In the air conditioning system described above, the dehumidifying / humidifying function of the second heat exchanger 2, whose heat transfer tubes are coated with an adsorbent, can be used to appropriately set the operation modes of dehumidifying cooling operation, humidifying heating operation, and defrosting operation depending on whether cooling, heating, or ventilation is performed. In each operation mode, operation can be performed by repeating adsorption and desorption.

[0121] Therefore, by applying the above-mentioned air conditioning system, it is possible to adjust the temperature and humidity, and the heat pump can be operated efficiently with a simple equipment configuration, making it possible to adjust the temperature and humidity while also providing ventilation. [Industrial Applicability]

[0122] The present invention can be used in the industrial field of heat exchangers (desiccant heat exchangers) that use adsorbents (desiccant) and air conditioning systems that use heat pump systems to regulate temperature and humidity while also providing ventilation. [Explanation of symbols]

[0123] 1 1st heat exchanger 2 Second heat exchanger 3 Third heat exchanger 4 Compressor 5. First expansion valve 6 Second expansion valve 7 Route switching method 9. Control Measures 11 Indoor unit 12 Outdoor unit 13 Casing 14 Air Fan 15 Refrigerant piping 16 Air piping 17 Suppression equipment 19 Entrance hole 20 blowhole 21 Outside air intake (OA) 22 Return air inlet (RA) 23 Exhaust outlet (EA) 24 Air intake outlet (SA) 25 Second exhaust outlet (EA2) 26 Entrance slide 27 Inlet switching means 28 Exit slide plate 29 Exit switching means 31 Indoor bypass road 32 Indoor bypass valve 33 Outdoor bypass 34 Outdoor bypass valve 35 Inlet Actuator 36 Outlet Actuator 37 Gutter parts 38 Dividers 39 Compartment 40 Four-way valve 41 Port 1 42 Second Port 43 Third Port 44 Port 4

Claims

1. a first heat exchanger in which a medium flows through a heat transfer tube and which is disposed in a location to be air-conditioned; a second heat exchanger in which an adsorbent is applied to the outside of a heat transfer tube through which a medium flows; a first expansion valve provided in a path of the medium on one side of the second heat exchanger and whose operation is controlled between an open state and a throttle state; a second expansion valve provided in a path of the medium on the other side of the second heat exchanger and whose operation is controlled between an open state and a throttle state; A compression means for compressing the medium; a path switching means for switching the supply of a compressed medium, which is a medium compressed by the compression means, to the first heat exchanger or the first expansion valve, The second expansion valve is connected to one side of the first heat exchanger, The path switching means is connected to the other side of the first heat exchanger, the path switching means is connected to the first expansion valve via a third heat exchanger, The second heat exchanger is housed in a casing; The casing is provided with an outside air inlet from the outside, a return air inlet from the air-conditioned area, an exhaust air outlet to the outside, and a supply air outlet to the air-conditioned area, and a control means for controlling the operation of the path switching means, the first expansion valve, the second expansion valve, and the open / closed states of the outside air inlet, the return air inlet, the exhaust air outlet, and the supply air outlet based on the input information. An air conditioning system characterized by:

2. 2. The air conditioning system according to claim 1, an inlet switching means for connecting the outside air inlet portion of the casing to the inlet flow hole or the return air inlet portion to the inlet flow hole by sliding an inlet slide plate having one inlet flow hole; an outlet switching means for connecting the exhaust outlet portion of the casing to the outlet flow hole or the intake outlet portion of the casing to the outlet flow hole by sliding an outlet slide plate having one outlet flow hole; The control means The sliding motion of the inlet slide plate and the outlet slide plate is controlled to control the open / closed states of the outside air inlet portion, the return air inlet portion, the exhaust air outlet portion, and the supply air outlet portion. An air conditioning system characterized by:

3. 3. The air conditioning system according to claim 2, The operation mode is The second heat exchanger is adapted to adsorb moisture to the adsorbent, and the second heat exchanger is adapted to adsorb moisture to the adsorbent. The ... An air conditioning system characterized by:

4. In the air conditioning system according to claim 2 or 3, The second heat exchanger desorbs moisture from the adsorbent, and the second heat exchanger is caused to circulate outside air from the outside air inlet, and the outside air that has circulated through the second heat exchanger is caused to circulate from the supply air outlet to the first heat exchanger serving as a condenser. An air conditioning system characterized by:

5. 5. The air conditioning system according to claim 4, a bypass passage for bypassing a heat transfer tube of the first heat exchanger, a defrosting operation mode in which the second heat exchanger is an evaporator, the third heat exchanger is a condenser, and the medium is caused to flow through the bypass path without flowing through a heat transfer tube of the first heat exchanger. An air conditioning system characterized by:

6. In the air conditioning system according to claim 4 or 5, The casing is formed with a second exhaust outlet portion adjacent to the exhaust outlet portion, the outlet switching means slides the outlet slide plate so that the outlet flow hole and the second exhaust outlet portion communicate with each other, The third heat exchanger has a frost suppression function to which a fluid from the second exhaust outlet portion is sent, The operation mode is The frost suppression operation mode includes a frost suppression operation mode in which return air from the return air inlet portion or outside air from the outside air inlet portion is circulated through the second heat exchanger that adsorbs moisture to the adsorbent, and the return air that has circulated through the second heat exchanger is supplied to the frost suppression function from the second exhaust outlet portion. An air conditioning system characterized by:

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