Refrigeration cycle device

Abstract

In an adsorbent circulation circuit (30) in which an adsorbent that adsorbs and desorbs a refrigerant circulates, an adsorption flow path portion (32) that causes the adsorbent pressure-fed from an adsorbent pressure-feeding portion (31) to adsorb the refrigerant from an adsorption portion (22) has an adsorption-side transmission member (32a) that is in contact with the adsorption portion (22) for supplying the refrigerant to be adsorbed by the adsorbent and transmits the refrigerant but does not transmit the adsorbent, and a first heat medium flow path portion (42) through which a first heat medium heated by adsorption heat dissipated when the adsorbent adsorbs the refrigerant flows has an adsorption-side heat transfer member (42a) that is in contact with the adsorption flow path portion (32) and transfers the heat in the adsorption flow path portion (32) to the first heat medium.

Description

Refrigeration cycle device Cross-reference to related applications

[0001] This application is based on Japanese Patent Application No. 2024-228106 filed on December 25, 2024, the content of which is incorporated herein by reference.

[0002] This disclosure relates to a refrigeration cycle device.

[0003] Conventionally, Patent Document 1 discloses a so-called hybrid refrigeration cycle device that circulates a mixed refrigerant in which an adsorbent and a refrigerant are mixed.

[0004] In a hybrid refrigeration cycle device, the adsorbent functions as an adsorbent and the refrigerant functions as an adsorbate. Therefore, the heat of adsorption when the refrigerant is adsorbed by the adsorbent and the heat of desorption when the refrigerant is desorbed from the adsorbent can be utilized.

[0005] In a hybrid refrigeration cycle device, the pressure of the refrigerant on the high-pressure side can be reduced compared to a normal vapor compression refrigeration cycle device in which the adsorbent is not mixed with the refrigerant, thereby improving the operating efficiency of the cycle.

[0006] International Publication No. 2024 / 004971

[0007] In a normal vapor compression refrigeration cycle device that is not hybrid, boiling heat transfer and condensation heat transfer occur inside the heat exchanger, so the heat transfer rate inside the heat exchanger becomes high, and thus high performance and efficiency are exhibited.

[0008] However, in the hybrid refrigeration cycle device in Patent Document 1, the state of the refrigerant during the cycle is basically in the gas phase. Therefore, the heat transfer rate inside the heat exchanger becomes low and the theoretical potential of performance and efficiency cannot be exploited.

[0009] Moreover, since the adsorbent and the refrigerant are mixed inside the heat exchanger, the refrigerant intervenes in the heat transfer when utilizing the heat of adsorption and the heat of desorption. Therefore, the thermal resistance becomes large and the theoretical potential of performance and efficiency cannot be exploited.

[0010] In view of the above points, this disclosure aims to improve performance and efficiency in a hybrid refrigeration cycle system by improving heat transfer.

[0011] A refrigeration cycle apparatus according to a first aspect of the present disclosure comprises an adsorbent circulation circuit, an adsorption section, a desorption section, a compression section, a first heat transfer medium flow path section, and a second heat transfer medium flow path section.

[0012] The adsorbent circulation circuit consists of an adsorbent that circulates to adsorb and desorb refrigerant. The adsorption section is supplied with refrigerant to be adsorbed by the adsorbent. The desorption section receives refrigerant desorbed from the adsorbent. The compression section draws in refrigerant from the desorption section, compresses it, and discharges it back to the adsorption section. The first heat transfer medium passage section carries a first heat transfer medium that is heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant. The second heat transfer medium passage section carries a second heat transfer medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant.

[0013] The adsorbent circulation circuit includes an adsorbent pumping section, an adsorption flow path section, an adsorbent depressurization section, and a desorption flow path section. The adsorbent pumping section draws in and pumps the adsorbent. The adsorption flow path section allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorption section. The adsorbent depressurization section depressurizes the adsorbent that has flowed out of the adsorption flow path section. The desorption flow path section desorbs the refrigerant from the adsorbent that has been depressurized in the adsorbent depressurization section, allowing the adsorbent to be drawn into the adsorbent pumping section and the refrigerant to flow out into the desorption section.

[0014] The adsorption channel section has an adsorption-side permeable member. The adsorption-side permeable member is in contact with the adsorption section and has an adsorption-side permeable member that allows the refrigerant to pass through but not the adsorbent. The first heat transfer medium channel section has an adsorption-side heat transfer member. The adsorption-side heat transfer member is in contact with the adsorption channel section and has an adsorption-side heat transfer member that transfers the heat from the adsorption channel section to the first heat transfer medium.

[0015] According to this, in the adsorbent circulation circuit, the adsorbent can be circulated with minimal mixing with the refrigerant. Therefore, in the adsorption flow path of the adsorbent circulation circuit, the heat of adsorption generated when the adsorbent adsorbs the refrigerant can be transferred to the first heat transfer medium in the first heat transfer medium flow path with minimal involvement of the refrigerant. Consequently, the thermal resistance when utilizing the heat of adsorption can be reduced and heat transfer efficiency can be improved, thereby improving performance and efficiency.

[0016] A refrigeration cycle apparatus according to a second aspect of the present disclosure comprises an adsorbent circulation circuit, an adsorption section, a desorption section, a compression section, a first heat transfer medium flow path section, and a second heat transfer medium flow path section.

[0017] The adsorbent circulation circuit consists of an adsorbent that circulates to adsorb and desorb refrigerant. The adsorption section is supplied with refrigerant to be adsorbed by the adsorbent. The desorption section receives refrigerant desorbed from the adsorbent. The compression section draws in refrigerant from the desorption section, compresses it, and discharges it back to the adsorption section. The first heat transfer medium passage section carries a first heat transfer medium that is heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant. The second heat transfer medium passage section carries a second heat transfer medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant.

[0018] The adsorbent circulation circuit comprises an adsorbent pumping section, an adsorption flow path section, an adsorbent depressurization section, and a desorption flow path section. In the adsorbent circulation circuit, the adsorbent pumping section sucks in and pumps the adsorbent. The adsorption flow path section allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorbent section. The adsorbent depressurization section depressurizes the adsorbent that has flowed out of the adsorption flow path section. The desorption flow path section desorbs the refrigerant from the adsorbent that has been depressurized in the adsorbent depressurization section, allowing the adsorbent to be sucked into the adsorbent pumping section and the refrigerant to flow out to the desorption section.

[0019] The desorption channel section has a desorption-side permeable member. The desorption-side permeable member is in contact with the desorption section and allows the refrigerant to pass through but not the adsorbent. The second heat transfer medium channel section has a desorption-side heat transfer member. The desorption-side heat transfer member is in contact with the desorption channel section and transfers heat from the second heat transfer medium to the desorption channel section.

[0020] According to this, the adsorbent can be circulated in the adsorbent circulation circuit with minimal mixing with the refrigerant. Therefore, in the desorption channel section of the adsorbent circulation circuit, the heat of adsorption required when the adsorbent desorbs the refrigerant can be transferred from the second heat transfer medium in the second heat transfer medium channel section with minimal involvement of the refrigerant. Consequently, the thermal resistance when utilizing the heat of desorption can be reduced and heat transfer efficiency can be improved, leading to improved performance and efficiency.

[0021] The above-mentioned and other purposes, features and advantages of this disclosure will become clearer from the following detailed description with reference to the attached drawings. This is a schematic overall diagram of the refrigeration cycle apparatus of the first embodiment. This is a cross-sectional view taken along line II-II in Figure 1. This is a partially enlarged view of Figure 2. This is a partially enlarged view showing the inside of the adsorbent of the second embodiment. This is a schematic overall diagram of the refrigeration cycle apparatus of the third embodiment. This is a schematic overall diagram of the refrigeration cycle apparatus of the fourth embodiment. This is a schematic overall diagram of the refrigeration cycle apparatus of the fifth embodiment. This is a graph illustrating the method for determining the length of the adsorption channel in the fifth embodiment. This is a graph illustrating the method for determining the length of the desorption channel in the fifth embodiment.

[0022] Several embodiments for carrying out this disclosure are described below with reference to the drawings. In each embodiment, parts corresponding to matters described in a prior embodiment may be denoted by the same reference numerals, and redundant descriptions may be omitted. If only a part of the configuration is described in each embodiment, other parts of the configuration can be applied to other embodiments described in advance. Not only can parts that are explicitly shown to be combinable in each embodiment be combined, but embodiments can also be partially combined even if not explicitly shown, as long as there is no particular impediment to the combination.

[0023] (First Embodiment) A first embodiment of the refrigeration cycle device according to the present disclosure will be described with reference to Figures 1, 2, and 3. In this embodiment, the refrigeration cycle device 10 shown in the overall configuration diagram of Figure 1 is applied to an air conditioning system. The air conditioning system is a device that cools and heats the air blown into a room, which is the space to be air-conditioned. The refrigerant of the refrigeration cycle device 10 is, for example, carbon dioxide (i.e., R744).

[0024] The refrigeration cycle device 10 includes a compressor 21, an adsorbent 22, a desorbent 24, an adsorbent circulation circuit 30, a hot water circuit 40, a chilled water circuit 50, and a control device 60.

[0025] The compressor 21 is a compression unit that inhales, compresses, and discharges refrigerant. The compressor 21 is an electric compressor that rotates a fixed-capacity compression mechanism with a fixed discharge capacity using an electric motor. As the compression mechanism, a rotary type compression mechanism, a scroll type compression mechanism, etc., can be used. The rotational speed of the compressor 21 (i.e., the refrigerant discharge capacity) is controlled by a control signal output from the control device 60.

[0026] The refrigerant inlet side of the adsorber 22 is connected to the discharge port of the compressor 21. The adsorber 22 is a pressure vessel into which the high-pressure refrigerant discharged from the compressor 21 flows. The adsorber 22 is an adsorption unit that supplies the refrigerant to be adsorbed by the adsorbent in the adsorbent circulation circuit 30.

[0027] A desorption unit 24 is connected to the intake port of the compressor 21. The desorption unit 24 is a desorption section into which refrigerant desorbed from the adsorbents in the adsorbent circulation circuit 30 flows. The refrigerant in the desorption unit 24 is drawn into the compressor 21.

[0028] The adsorbent circulation circuit 30 is a circuit through which an adsorbent capable of adsorbing and desorbing the refrigerant of the refrigeration cycle device 10 circulates. The adsorbent adsorbs the refrigerant under high pressure and desorbs (in other words, detaches) the refrigerant under low pressure. Furthermore, when adsorbing the refrigerant, the adsorbent releases the heat (i.e., internal energy) of the adsorbed refrigerant as heat of adsorption, and when desorbing the refrigerant, it absorbs the surrounding heat as heat of desorption.

[0029] More specifically, in this embodiment, a metal-organic framework (MOF) is used as the adsorbent. MOF is a porous material obtained by reacting metal ions with organic ligands. MOF is a polymeric structure that has countless openings inside due to the linkage between metal ions and organic ligands.

[0030] MOFs allow for optimization of the aperture diameter through the combination of metal ions and organic ligands. By adjusting the aperture diameter, MOFs can selectively adsorb target substances. In this embodiment, an MOF suitable for adsorbing carbon dioxide, a refrigerant, is employed. Specifically, MOF-5 or MOF-200 can be used.

[0031] The adsorbent does not dissolve in the refrigerant and circulates through the adsorbent circulation circuit 30 in a solid state, either as a powder or as particulate matter.

[0032] The adsorbent circulation circuit 30 includes an adsorbent pump 31, an adsorption flow path section 32, an adsorbent pressure reducer 33, and a desorption flow path section 34. The adsorbent pump 31 is an adsorbent pumping section that sucks in and pumps the adsorbent.

[0033] The adsorbent pump 31 pumps the adsorbent so that the flow direction of the adsorbent in the adsorption channel section 32 is generally opposite to the flow direction of the refrigerant in the adsorber 22, and the flow direction of the adsorbent in the desorption channel section 34 is generally opposite to the flow direction of the refrigerant in the desorption device 24. In other words, in both the adsorption channel section 32 and the desorption channel section 34, the flow of the adsorbent is generally in opposition to the flow of the refrigerant.

[0034] Specifically, the inflow and outflow directions of the adsorbent in the adsorption channel section 32 are opposite to the inflow direction of the refrigerant in the adsorbent 22, and the inflow and outflow directions of the adsorbent in the desorption channel section 34 are opposite to the outflow direction of the refrigerant in the desorption device 24.

[0035] The adsorption channel section 32 is a channel through which the adsorbent pumped from the adsorbent pump 31 flows, and is located inside the adsorbent 22. The adsorption channel section 32 is formed in a meandering shape inside the adsorbent 22. As a result, as shown in Figure 2, the adsorption channel section 32 is located in multiple places inside the adsorbent 22 when viewed in cross-section.

[0036] The adsorbent pressure reducer 33 is an adsorbent pressure reducer that reduces the pressure of the adsorbent that has flowed out of the adsorption channel 32. For example, the adsorbent pressure reducer 33 may be a low-pressure pump that pumps the adsorbent that has flowed out of the adsorption channel 32 at a low pressure, or it may be a throttling mechanism that restricts the flow rate of the adsorbent.

[0037] The desorption / desorption channel section 34 is a channel through which the adsorbent, depressurized by the adsorbent pressure reducer 33, flows, and is located inside the desorption unit 24. The internal configuration of the desorption unit 24 is the same as that of the adsorbent 22, so the internal configuration of the desorption unit 24 is indicated in parentheses in Figure 2 with reference numerals, and the illustration of the internal configuration of the desorption unit 24 is omitted. Similar to the adsorption channel section 32, the desorption / desorption channel section 34 is formed in a meandering shape inside the desorption unit 24, and is located in multiple places inside the desorption unit 24 when viewed in cross-section.

[0038] The hot water circuit 40 is a circuit through which hot water heated by the heat of adsorption released by the adsorbent is circulated. The hot water is a fluid that serves as the first heat transfer medium, and is, for example, a liquid containing at least ethylene glycol or dimethylpolysiloxane, an antifreeze liquid, a coolant, etc.

[0039] The hot water circuit 40 is a high-temperature utilization medium circulation circuit through which hot water, which is a high-temperature utilization medium, circulates, and includes a hot water pump 41, a hot water adsorbent heat exchange flow path section 42, a hot water utilization heat exchanger 43, and a hot water refrigerant heat exchange flow path section 44.

[0040] The hot water pump 41 is a first heat medium pumping unit that sucks and pumps hot water, which is the first heat medium. The hot water pump 41 pumps the hot water such that the flow direction of the hot water in the hot water adsorbent heat exchange channel section 42 is overall opposite to the flow direction of the adsorbent in the adsorption channel section 32. In other words, in the hot water adsorbent heat exchange channel section 42, the flow of the hot water is overall a countercurrent with respect to the flow of the adsorbent in the adsorption channel section 32.

[0041] The hot water adsorbent heat exchange channel section 42 is a channel through which the hot water in the hot water circuit 40 flows. The hot water adsorbent heat exchange channel section 42 is a first heat medium channel section through which the hot water, which is the first heat medium, flows. The hot water adsorbent heat exchange channel section 42 is disposed inside the adsorber 22. As shown in FIG. 2, the hot water adsorbent heat exchange channel section 42 is disposed inside the adsorption channel section 32.

[0042] The hot water utilization heat exchanger 43 is a heat radiating heat exchanger that radiates the hot water flowing out from the hot water adsorbent heat exchange channel section 42 to the heat dissipation object. In this example, since the refrigeration cycle device 10 is applied to an air conditioner, the heat dissipation object is the air blown into the room during the heating operation of the air conditioner, and is the outside air during the cooling operation of the air conditioner.

[0043] The hot water refrigerant heat exchange channel section 44 is a channel through which the hot water in the hot water circuit 40 flows. The hot water refrigerant heat exchange channel section 44 is a heat medium refrigerant heat exchange channel section in which the hot water, which is the first heat medium, flows in series with the hot water adsorbent heat exchange channel section 42. The hot water refrigerant heat exchange channel section 44 is disposed inside the adsorber 22 and outside the adsorption channel section 32. The hot water refrigerant heat exchange channel section 44 is a channel for directly heat exchanging the hot water with the refrigerant inside the adsorber 22.

[0044] The cold water circuit 50 is a circuit through which cold water that supplies desorption heat to the adsorbent circulates. The cold water is a fluid as the second heat medium, and is, for example, a liquid containing at least ethylene glycol or dimethylpolysiloxane, an antifreeze liquid, a coolant, or the like.

[0045] The cold water circuit 50 is a low-temperature utilization medium circulation circuit through which cold water, which is a low-temperature utilization medium, circulates, and includes a cold water pump 51, a cold water heat exchange channel section 52, and a cold water utilization heat exchanger 53.

[0046] The cold water pump 51 is a cold water pumping machine that sucks in and pumps cold water. The cold water pump 51 pumps cold water so that the flow direction of the cold water in the cold water heat exchange flow path section 52 is overall opposite to the flow direction of the adsorbent in the desorption flow path section 34. In other words, in the cold water heat exchange flow path section 52, the flow of the cold water is overall a countercurrent to the flow of the adsorbent in the desorption flow path section 34.

[0047] The cold water heat exchange flow path section 52 is a flow path through which the cold water pumped from the cold water pump 51 flows. The cold water heat exchange flow path section 52 is a second heat medium flow path section through which the cold water, which is the second heat medium, flows. The cold water heat exchange flow path section 52 is disposed inside the desorber 24. Similar to the warm water adsorbent heat exchange flow path section 42, the cold water heat exchange flow path section 52 is disposed inside the desorption flow path section 34.

[0048] The cold water utilization heat exchanger 53 is a heat absorption heat exchanger that causes the heat absorption object to absorb heat from the cold water flowing out of the cold water heat exchange flow path section 52. In this example, since the refrigeration cycle device 10 is applied to an air conditioner, the heat absorption object is the air blown into the room during the cooling operation of the air conditioner, and is the outside air during the heating operation of the air conditioner.

[0049] The detailed structure inside the adsorber 22 is shown in FIG. 3. The part of the adsorption flow path section 32 that constitutes the boundary with the internal space of the adsorber 22 is formed by the adsorption side permeation member 32a. The adsorption side permeation member 32a is a member through which the refrigerant can pass but the adsorbent cannot pass, for example, a metal tube or a ceramic tube in which a large number of pores are formed. The adsorption flow path section 32 is in contact with the internal space of the adsorber 22 through the adsorption side permeation member 32a.

[0050] The part of the warm water adsorbent heat exchange flow path section 42 that constitutes the boundary with the internal space of the adsorption flow path section 32 is formed by the adsorption side heat transfer member 42a. The adsorption side heat transfer member 42a is a tubular member formed of a material (for example, a metal such as aluminum) that cannot pass any of the refrigerant, the adsorbent, and the warm water, and can conduct heat between the adsorption flow path section 32 and the warm water adsorbent heat exchange flow path section 42. The warm water adsorbent heat exchange flow path section 42 is in contact with the internal space of the adsorption flow path section 32 through the adsorption side heat transfer member 42a.

[0051] The detailed internal structure of the detacher 24 is the same as the detailed internal structure of the suction cup 22 shown in Figure 3. Therefore, the reference numerals corresponding to the detailed internal structure of the detacher 24 are added in parentheses in Figure 3, and the illustration of the detailed internal structure of the detacher 24 is omitted.

[0052] The portion of the desorption / desorption channel 34 that forms the boundary with the internal space of the desorption device 24 is formed by a desorption-side permeable member 34a. Similar to the adsorption-side permeable member 32a, the desorption-side permeable member 34a is made of a porous material that allows refrigerant to pass through but not adsorbent material, and is, for example, a metal or ceramic tube with many pores. The desorption / desorption channel 34 is in contact with the internal space of the desorption device 24 via the desorption-side permeable member 34a.

[0053] The portion of the chilled water heat exchange channel 52 that forms the boundary with the internal space of the desorption channel 34 is formed by a desorption-side heat transfer member 52a. The desorption-side heat transfer member 52a, like the adsorption-side heat transfer member 42a, is a tubular member made of a material (for example, a metal such as aluminum) that does not allow the passage of refrigerant, adsorbent, or chilled water, but that does allow heat to be conducted between the desorption channel 34 and the chilled water heat exchange channel 52. The chilled water heat exchange channel 52 is in contact with the internal space of the desorption channel 34 via the desorption-side heat transfer member 52a.

[0054] Next, the electrical control unit of the air conditioning system of this embodiment will be described. The control device 60 has a well-known microcomputer including a CPU, ROM, and RAM, and peripheral circuits. The control device 60 performs various calculations and processes based on the control program stored in the ROM. Then, based on the calculation and processing results, the control device 60 controls the operation of various controlled devices connected to the output side.

[0055] Various control sensors are connected to the input side of the control device 60. The control sensors include an internal temperature sensor, an external temperature sensor, a discharge pressure sensor, a discharge temperature sensor, an intake pressure sensor, an intake temperature sensor, a hot water temperature sensor, a chilled water temperature sensor, and the like (not shown).

[0056] The indoor temperature sensor is an indoor temperature detection unit that detects the indoor air temperature (i.e., the indoor temperature). The outdoor temperature sensor is an outdoor temperature detection unit that detects the outdoor air temperature (i.e., the outdoor temperature).

[0057] The discharge pressure sensor is a discharge pressure detection unit that detects the discharge pressure, which is the pressure of the refrigerant discharged from the compressor 21. The discharge temperature sensor is a discharge temperature detection unit that detects the discharge temperature, which is the temperature of the refrigerant discharged from the compressor 21.

[0058] The intake pressure sensor is an intake pressure detection unit that detects the intake pressure, which is the pressure of the refrigerant drawn into the compressor 21. The intake temperature sensor is an intake temperature detection unit that detects the intake temperature, which is the temperature of the refrigerant drawn into the compressor 21.

[0059] The hot water temperature sensor is a high-temperature utilization medium temperature detection unit that detects the temperature of the hot water flowing out from the hot water adsorbent heat exchange channel section 42. The cold water temperature sensor is a high-temperature utilization medium temperature detection unit that detects the temperature of the cold water flowing out from the cold water heat exchange channel section 52.

[0060] An operation panel (not shown) is connected to the input side of the control device 60 by wire or wireless connection. The control device 60 receives operation signals from various operation switches provided on the operation panel. The various operation switches provided on the operation panel include an operation switch, a temperature setting switch, an airflow setting switch, and so on.

[0061] The control device 60 is an integrated unit that controls various controlled devices connected to the output side. Therefore, the configurations (hardware and software) that control the operation of each controlled device constitute the control unit that controls the operation of each controlled device. For example, within the control device 60, the configuration that controls the refrigerant discharge capacity of the compressor 21 constitutes the discharge capacity control unit, and the configuration that controls the amount of pressure reduction of the adsorbent pressure reducer 33 constitutes the adsorbent pressure reduction amount control unit.

[0062] Next, the operation of the air conditioning system in the above configuration will be described. When the operating switch of the air conditioning system is turned on, the control device 60 executes a control program. The control program reads the detection signals from the control sensor group and the operation signals from the control panel described above.

[0063] Then, based on the read detection signal and operation signal, the operation of various controlled devices such as the compressor 21 and the adsorbent pressure reducer 33 is controlled. Subsequently, until the termination condition of the control program is met, the control routine of reading the detection signal and operation signal and controlling the various controlled devices based on the detection signal and operation signal is repeated at predetermined control cycles.

[0064] In the refrigeration cycle device 10, when the control device 60 operates the compressor 21, the compressor 21 draws in the refrigerant from the decoupling unit 24, compresses it, and discharges it.

[0065] The high-pressure refrigerant discharged from the compressor 21 flows into the adsorbent 22. In the adsorbent circulation circuit 30, the adsorbent pumped from the adsorbent pump 31 flows into the adsorption flow path section 32 located inside the adsorbent 22. In the hot water circuit 40, the hot water pumped from the hot water pump 41 flows in series into the hot water-refrigerant heat exchange flow path section 44 and the hot water-adsorbent heat exchange flow path section 42 located inside the adsorbent 22.

[0066] The high-pressure refrigerant flowing into the adsorber 22 passes through the adsorption-side permeable member 32a and flows into the adsorption channel section 32, as shown by the thick solid arrow in Figure 3. In the adsorption channel section 32, the high-pressure refrigerant that has passed through the adsorption-side permeable member 32a is adsorbed onto the adsorbent. In other words, a pressure field necessary for the adsorbent to adsorb the refrigerant is formed inside the adsorber 22.

[0067] In the adsorption channel section 32, the adsorbent releases the internal energy it has stored when adsorbing the refrigerant as heat of adsorption. As shown by the thick dashed arrow in Figure 3, the heat of adsorption released by the adsorbent is transferred to the hot water flowing into the hot water adsorbent heat exchange channel section 42 via the adsorption-side heat transfer member 42a. As a result, the hot water flowing into the hot water adsorbent heat exchange channel section 42 is heated. In other words, the heat of adsorption released from the adsorbent is transferred to the hot water with as little involvement of the refrigerant as possible. The hot water heated in the hot water adsorbent heat exchange channel section 42 flows into the hot water utilization heat exchanger 43 and dissipates heat to the object to be heated.

[0068] A portion of the refrigerant flowing into the adsorbent 22 exchanges heat with the hot water flowing through the hot water-refrigerant heat exchange channel 44. As a result, the amount of heat equivalent to the compression work done by the compressor 21 is released from the refrigerant into the hot water flowing through the hot water-refrigerant heat exchange channel 44 without passing through the adsorbent.

[0069] The adsorbent material that flows out of the adsorption channel section 32 flows into the adsorbent pressure reducer 33 and is depressurized. At this time, a small amount of refrigerant may flow into the adsorbent pressure reducer 33 from the adsorption channel section 32 without being adsorbed by the adsorbent material and be depressurized. The adsorbent material that has been depressurized in the adsorbent pressure reducer 33 flows into the desorption channel section 34 located inside the desorption unit 24. Chilled water pumped from the chilled water pump 51 flows into the chilled water heat exchange channel section 52 located inside the desorption channel section 34.

[0070] As the pressure decreases, the refrigerant is desorbed from the adsorbent that flows into the desorption channel 34. At this time, the adsorbent absorbs the heat from the chilled water that flows into the chilled water heat exchange channel 52 as desorption heat via the desorption-side heat transfer member 52a. In other words, the desorption heat is transferred from the chilled water to the adsorbent with as little refrigerant as possible.

[0071] The refrigerant desorbed from the adsorbent in the desorption channel section 34 flows through the desorption-side permeable member 34a into the space outside the desorption channel section 34 within the desorption unit 24. The refrigerant that flows from the desorption channel section 34 through the desorption-side permeable member 34a into the space outside the desorption channel section 34 is drawn into the compressor 21 and compressed again. The adsorbent from which the refrigerant has been desorbed in the desorption channel section 34 is drawn into the adsorbent pump 31 and pumped again. The chilled water that has absorbed heat in the chilled water heat exchange channel section 52 flows into the chilled water heat exchanger 53 and absorbs heat from the object to be heated.

[0072] As described above, in this embodiment of the air conditioning system, heating can be performed by blowing air heated by the hot water heat exchanger 43 into the room, and cooling can be performed by blowing air cooled by the chilled water heat exchanger 53 into the room.

[0073] Furthermore, the refrigeration cycle device 10 of this embodiment is a hybrid type refrigeration cycle device that circulates the refrigerant while adsorbing and desorbing it onto an adsorbent. Therefore, the adsorbent 22 can dissipate the heat of adsorption generated when the adsorbent adsorbs the refrigerant into hot water, and the desorbent 24 can absorb the heat of desorption generated when the adsorbent desorbs the refrigerant from the cold water.

[0074] Therefore, according to the refrigeration cycle device 10 of this embodiment, the cycle pressure can be reduced compared to a conventional vapor compression type refrigeration cycle device that does not circulate the adsorbent, thus reducing the refrigerant pressure in the adsorbent 22 and the discharge refrigerant pressure. As a result, the operating efficiency of the cycle can be improved.

[0075] Furthermore, since the heat of adsorption released from the adsorbent is transferred to the hot water with minimal use of the refrigerant, the heat transfer efficiency of the heat of adsorption can be improved compared to the case where the heat of adsorption is transferred to the hot water via the refrigerant, and consequently, the performance of the refrigeration cycle device 10 can be improved.

[0076] Similarly, since the heat of desorption absorbed by the adsorbent is transferred from the chilled water with minimal use of the refrigerant, the heat transfer efficiency of the desorption heat can be improved compared to the case where the heat of desorption is transferred from the chilled water via the refrigerant, and consequently, the performance of the refrigeration cycle device 10 can be improved.

[0077] In particular, in this embodiment, since the hot water and chilled water are liquids that do not undergo a phase change under the normal operating conditions of the refrigeration cycle device 10, the thermal resistance can be significantly reduced compared to the case where a gaseous refrigerant is intervened in the heat transfer between the hot water or chilled water and the adsorbent.

[0078] In this embodiment, the refrigerant that flows into the adsorbent 22 flows into the adsorbent circulation circuit 30 and moves to the desorbent 24 while basically adsorbed on the adsorbent. In other words, in this embodiment, there is no refrigerant flow path that allows refrigerant that does not flow into the adsorbent circulation circuit 30 to flow to the desorbent 24. Therefore, the flow rate of refrigerant discharged by the compressor 21 can be kept to a minimum, thereby reducing the power consumption of the compressor 21. In addition, the configuration can be simplified and the size can be reduced.

[0079] In this embodiment, if the entire amount of refrigerant discharged from the compressor 21 is adsorbed onto the adsorbent in the adsorption channel section 32, the discharge flow rate of the compressor 21 can be kept to a minimum, thereby reducing the energy consumption of the compressor 21.

[0080] On the other hand, if a small amount of refrigerant flows from the adsorption channel 32 to the desorption channel 34 without being adsorbed by the adsorbent, the fluidity of the adsorbent can be increased compared to the case where only the adsorbent flows from the adsorption channel 32 to the desorption channel 34.

[0081] In this embodiment, the adsorption channel section 32 of the adsorbent circulation circuit 30 is in contact with the adsorbent 22 and has an adsorption-side permeable member 32a that allows refrigerant to pass through but not the adsorbent, and the hot water adsorbent heat exchange channel section 42 is in contact with the adsorption channel section 32 and has an adsorption-side heat transfer member 42a that transfers heat from the adsorption channel section 32 to the hot water.

[0082] According to this, the adsorbent circulation circuit 30 can circulate the adsorbent with minimal mixing with the refrigerant. Therefore, in the adsorption flow channel 32 of the adsorbent circulation circuit 30, the heat of adsorption generated when the adsorbent adsorbs the refrigerant can be transferred to the hot water in the hot water adsorbent heat exchange flow channel 42 with minimal involvement of the refrigerant. Consequently, the thermal resistance when utilizing the heat of adsorption can be reduced, thereby improving performance and efficiency.

[0083] In this embodiment, the adsorption channel section 32 is interposed between the adsorbent 22 and the hot water adsorbent heat exchange channel section 42. This makes it possible to efficiently achieve both the adsorption of the refrigerant from the adsorbent 22 onto the adsorbent in the adsorption channel section 32 and the transfer of heat from the adsorbent 22 to the hot water in the hot water adsorbent heat exchange channel section 42.

[0084] In this embodiment, the hot water adsorbent heat exchange channel section 42 is located inside the adsorption channel section 32. This allows for efficient heat transfer from the adsorbent 22 to the hot water in the hot water adsorbent heat exchange channel section 42.

[0085] In this embodiment, the direction of refrigerant flow in the adsorbent 22 and the direction of adsorbent flow in the adsorption channel 32 are opposite to each other. This allows the refrigerant in the adsorbent 22 to be efficiently adsorbed onto the adsorbent in the adsorption channel 32.

[0086] In this embodiment, the direction of the adsorbent flow in the adsorption channel 32 and the direction of the hot water flow in the hot water adsorbent heat exchange channel 42 are opposite to each other. This allows for efficient heat transfer from the adsorbent 22 to the first heat medium in the hot water adsorbent heat exchange channel 42.

[0087] In this embodiment, in the hot water-refrigerant heat exchange channel section 44, hot water flows in series with the hot water-adsorbent heat exchange channel section 42, and the hot water exchanges heat with the refrigerant in the adsorbent 22. As a result, the amount of heat equivalent to the compression work done by the compressor 21 can be released from the refrigerant into the hot water flowing through the hot water-refrigerant heat exchange channel section 44 without going through the adsorbent.

[0088] In this embodiment, the desorption channel section 34 of the adsorbent circulation circuit 30 is in contact with the desorption device 24 and has a desorption-side permeable member 34a that allows refrigerant to pass through but not the adsorbent, and the chilled water heat exchange channel section 52 is in contact with the desorption channel section 34 and has a desorption-side heat transfer member 52a that transfers the heat of chilled water to the desorption channel section 34.

[0089] According to this, the adsorbent circulation circuit 30 can circulate the adsorbent with minimal mixing with the refrigerant. Therefore, in the desorption channel section 34 of the adsorbent circulation circuit 30, the heat of adsorption required when the adsorbent desorbs the refrigerant can be transferred from the chilled water in the chilled water heat exchange channel section 52 with minimal involvement of the refrigerant. Consequently, the thermal resistance when utilizing the heat of desorption can be reduced, thereby improving performance and efficiency.

[0090] In this embodiment, the desorption channel section 34 is interposed between the desorption unit 24 and the chilled water heat exchange channel section 52. This makes it possible to efficiently achieve both the transfer of desorption heat from the chilled water in the chilled water heat exchange channel section 52 to the desorption channel section 34 and the discharge of the refrigerant desorbed from the adsorbent in the desorption channel section 34 to the desorption unit 24.

[0091] In this embodiment, the chilled water heat exchange channel 52 is located inside the desorption channel 34. This allows for efficient heat transfer from the chilled water in the chilled water heat exchange channel 52 to the chilled water heat exchange channel 52.

[0092] In this embodiment, the direction of refrigerant flow in the desorption unit 24 and the direction of adsorbent flow in the desorption channel 34 are opposite to each other. This allows for efficient desorption of refrigerant from the adsorbent in the desorption channel 34.

[0093] In this embodiment, the direction of flow of the adsorbent in the desorption channel 34 and the direction of flow of the refrigerant in the chilled water heat exchange channel 52 are opposite to each other. This allows for efficient heat transfer of desorption heat from the chilled water in the chilled water heat exchange channel 52 to the chilled water heat exchange channel 52.

[0094] (Second Embodiment) In this embodiment, as shown in Figure 4, inside the adsorbent 22, a hot water side heat transfer fin 42b is provided on the adsorption side heat transfer member 42a inside the adsorption flow channel 32. Similarly inside the desorbent 24, as indicated by the reference numerals in parentheses in Figure 4, a cold water side heat transfer fin 52b is provided on the desorbing side heat transfer member 52a. The hot water side heat transfer fin 42b is the first heat transfer fin, and the cold water side heat transfer fin 52b is the second heat transfer fin.

[0095] The hot water side heat transfer fins 42b are heat exchange promoting members that increase the heat transfer area and promote heat exchange between the adsorbent and the hot water. The hot water side heat transfer fins 42b can further improve the heat transfer efficiency of the heat adsorption from the adsorbent to the hot water, thereby further improving the performance of the refrigeration cycle device 10.

[0096] The chilled water side heat transfer fin 52b, like the hot water side heat transfer fin 42b, is a heat exchange promoting member that increases the heat transfer area and promotes heat exchange between the adsorbent and chilled water. The chilled water side heat transfer fin 52b can further improve the heat transfer efficiency of desorption heat from chilled water to the adsorbent, thereby further improving the performance of the refrigeration cycle device 10.

[0097] In this embodiment, the adsorption-side heat transfer member 42a is provided with a hot water-side heat transfer fin 42b that increases the heat transfer area from the adsorption channel 32 to the hot water. This allows for efficient heat transfer from the adsorbent 22 to the hot water in the hot water adsorbent heat exchange channel 42.

[0098] In this embodiment, the desorption-side heat transfer member 52a is provided with chilled water-side heat transfer fins 52b that increase the heat transfer area from the desorption-side channel 34 to the chilled water heat exchange channel 52. This allows for efficient heat transfer of desorption heat from the chilled water in the chilled water heat exchange channel 52 to the chilled water heat exchange channel 52.

[0099] (Third Embodiment) In the first embodiment described above, inside the adsorbent 22 and inside the desorbent 24, the flow of the refrigerant and the flow of the adsorbent are in opposition to each other as a whole, the flow of the adsorbent and the flow of hot water are in opposition to each other as a whole, and the flow of the adsorbent and the flow of cold water are in opposition to each other as a whole.

[0100] In contrast, as shown in the embodiment in Figure 5, the flow of refrigerant and the flow of adsorbent may be in the same direction overall (so-called parallel flow) inside the adsorbent 22 and the desorbent 24, respectively, the flow of adsorbent and the flow of hot water may be in the same direction overall, and the flow of adsorbent and the flow of cold water may be in the same direction overall.

[0101] Specifically, the inflow and outflow directions of the adsorbent in the adsorption channel section 32 are the same as the inflow direction of the refrigerant in the adsorbent 22, and the inflow and outflow directions of the adsorbent in the desorption channel section 34 are the same as the outflow direction of the refrigerant in the desorption device 24.

[0102] (Fourth Embodiment) In the first embodiment described above, the refrigerant that flows into the adsorbent 22 flows into the adsorbent circulation circuit 30 and moves to the desorber 24 while basically adsorbed onto the adsorbent. In contrast, in this embodiment, as shown in Figure 6, a refrigerant flow path 25 is provided that allows the refrigerant that flows into the adsorbent 22 to flow to the desorber 24 without flowing into the adsorbent circulation circuit 30 and without being adsorbed onto the adsorbent. This forms a refrigerant circuit 20 through which the refrigerant circulates.

[0103] A refrigerant pressure reducer 23 is located in the refrigerant flow path 25. The refrigerant pressure reducer 23 is a refrigerant pressure reduction unit that reduces the pressure of the refrigerant that has flowed out of the adsorber 22. The refrigerant pressure reducer 23 is a flow rate adjustment unit that adjusts the flow rate of the refrigerant that flows into the desorption unit 24. The refrigerant inlet side of the desorption unit 24 is connected to the outlet of the refrigerant pressure reducer 23.

[0104] The refrigerant pressure reducer 23 has a valve body and a drive unit. The valve body changes the throttle opening. The drive unit displaces the valve body. An electric actuator such as a stepping motor or a brushless DC motor can be used as the drive unit. The operation of the refrigerant pressure reducer 23 is controlled by a control signal output from the control device 60.

[0105] According to this embodiment, it is possible to prevent a situation in the adsorbent 22 where there is insufficient refrigerant to adsorb onto the adsorbent, preventing the adsorbent from being unable to adsorb refrigerant. Therefore, the performance of the refrigeration cycle device 10 can be stably maintained.

[0106] (Fifth Embodiment) In this embodiment shown in Figure 7, the lengths of the adsorption channel section 32, the desorption channel section 34, the hot water adsorbent heat exchange channel section 42, and the chilled water heat exchange channel section 52 are relatively longer compared to the above embodiment. By making the length of the adsorption channel section 32 longer, sufficient time can be secured for the adsorbent to adsorb the refrigerant in the adsorption channel section 32.

[0107] In this example, multiple adsorption channel sections 32, desorption channel sections 34, hot water adsorbent heat exchange channel sections 42, and chilled water heat exchange channel sections 52 are provided in parallel.

[0108] The length of the adsorption channel section 32 in this embodiment will now be described. The adsorption channel section 32 is formed to a length such that the amount of adsorption that increases in the adsorption channel section 32 is 50% or more of the saturation adsorption amount. The amount of adsorption is the mass of refrigerant adsorbed on the adsorbent per unit mass of the adsorbent. The saturation adsorption amount is the amount of adsorption when the adsorption of refrigerant to the adsorbent is saturated.

[0109] The adsorption channel section 32 may be formed to a length such that the adsorption rate in the adsorption channel section 32 is less than or equal to the average adsorption rate. The adsorption rate is the rate at which the amount of adsorbed increases. The average adsorption rate is the average adsorption rate from when the amount of adsorbed increases from 0 to 99% of the saturation adsorption amount. In other words, the adsorption channel section 32 may be formed to a length such that the time the adsorbent flows through the adsorption channel section 32 is equal to or greater than the reference adsorption time Ta shown in the graph of Figure 8.

[0110] In Figure 8, the solid line representing the adsorption curve Ca1 shows the time change in the amount of adsorbed material during adsorption, the dashed-dotted line representing the average adsorption line La1 shows the time change in the hypothetical amount of adsorbed material corresponding to the average adsorption rate, and the double-dotted-dotted line representing the parallel adsorption line La2 is a straight line parallel to the average adsorption line La1 and tangent to the adsorption curve Ca1. The reference adsorption time Ta is the time when the adsorption curve Ca1 and the parallel adsorption line La2 are tangent to each other.

[0111] In this example, the desorption channel 34 is formed to the same length as the adsorption channel 32, but the desorption channel 34 may be formed to the following lengths. The desorption channel 34 may be formed to a length such that the amount of adsorption that decreases in the desorption channel 34 is 50% or more of the saturation adsorption amount.

[0112] The desorption channel section 34 may be formed to a length such that the desorption rate in the desorption channel section 34 is less than or equal to the average desorption rate. The desorption rate is the rate at which the amount of adsorbed material decreases. The average desorption rate is the average desorption rate until the amount of adsorbed material decreases from the saturated adsorption amount to 1% of the saturated adsorption amount. In other words, the desorption channel section 34 may be formed to a length such that the time the adsorbent material flows through the desorption channel section 34 is equal to or greater than the reference desorption time Td shown in the graph of Figure 9.

[0113] In Figure 9, the solid line desorption curve Cd1 shows the time change in the amount of adsorption during desorption, the dashed line average desorption line Ld1 shows the time change in the amount of adsorption corresponding to the average desorption rate, the dashed line parallel desorption line Ld2 is a line parallel to the average desorption line Ld1 and tangent to the desorption curve Cd1, and the reference desorption time Td is the time when the desorption curve Cd1 and the parallel desorption line Ld2 are tangent.

[0114] The length Lmof of the adsorption channel 32 may be set to satisfy the following formula F1: Lmof > (Gmof / Amof) × Tabs … (F1) In formula F1, Gmof is the flow rate of the adsorbent determined by the required capacity, Amof is the cross-sectional area of ​​the adsorption channel 32, and Tabs is the time required for the adsorption reaction.

[0115] As in this embodiment, the length of the adsorption channel 32 ensures sufficient time for the adsorbent to adsorb the refrigerant. Therefore, the adsorbent can be sufficiently adsorbed by the adsorbent channel 32 to a nearly saturated state, thereby fully utilizing the performance of the refrigeration cycle device 10 and minimizing the energy required to pump the adsorbent with the adsorbent pump 31. Consequently, the efficiency of the refrigeration cycle device 10 can be improved.

[0116] Furthermore, according to this embodiment, since both the adsorption channel 32 and the hot water adsorbent heat exchange channel 42 can be made longer, a sufficient heat transfer distance (in other words, heat transfer area) between the adsorbent and the hot water can be secured, and consequently, the heat of adsorption generated by the adsorbent can be reliably transferred to the hot water.

[0117] As in this embodiment, the elongated desorption channel 34 ensures sufficient time for the adsorbent to desorb the refrigerant. Therefore, almost all of the refrigerant can be desorbed from the adsorbent in the desorption channel 34, allowing the refrigeration cycle device 10 to perform to its full potential and minimizing the energy required to pump the adsorbent with the adsorbent pump 31. Consequently, the efficiency of the refrigeration cycle device 10 can be improved.

[0118] Furthermore, according to this embodiment, since both the desorption channel 34 and the chilled water heat exchange channel 52 can be made longer, a sufficient heat transfer distance (in other words, heat transfer area) between the adsorbent and the chilled water can be secured, and consequently, desorption heat can be reliably transferred from the chilled water to the adsorbent.

[0119] In this embodiment, the adsorption channel section 32 is formed to a length such that the amount of adsorption that increases in the adsorption channel section 32 is 50% or more of the saturation adsorption amount. This ensures that the necessary adsorption reaction time is secured for sufficient adsorption of the refrigerant from the adsorber 22 onto the adsorbent in the adsorption channel section 32.

[0120] The adsorption channel section 32 may be formed to a length such that the adsorption rate in the adsorption channel section 32 is less than or equal to the average adsorption rate. This ensures the necessary adsorption reaction time to sufficiently adsorb the refrigerant from the adsorber 22 onto the adsorbent in the adsorption channel section 32.

[0121] The desorption channel section 34 may be formed to a length such that the amount of adsorption that decreases in the desorption channel section 34 is 50% or more of the saturation adsorption amount. This ensures the adsorption reaction time necessary to sufficiently desorb the refrigerant from the adsorbent in the desorption channel section 34.

[0122] The desorption channel section 34 may be formed to a length such that the desorption speed in the desorption channel section 34 is less than or equal to the average desorption speed. This ensures the necessary adsorption reaction time to sufficiently desorb the refrigerant from the adsorbent in the desorption channel section 34.

[0123] This disclosure is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit of this disclosure, as follows.

[0124] In the above-described embodiment, the adsorption channel section 32 is located inside the adsorbent 22. However, the adsorption channel section 32 does not necessarily have to be located inside the adsorbent 22; it may be located adjacent to the adsorbent 22.

[0125] In the above-described embodiment, the hot water adsorbent heat exchange channel section 42 is located inside the adsorption channel section 32. However, the hot water adsorbent heat exchange channel section 42 does not necessarily have to be located inside the adsorption channel section 32; it may be located adjacent to the adsorption channel section 32.

[0126] In the above-described embodiment, the detachable channel section 34 is located inside the detachable device 24. However, the detachable channel section 34 does not necessarily have to be located inside the detachable device 24; it may be located adjacent to the detachable device 24.

[0127] In the above-described embodiment, the chilled water heat exchange channel section 52 is located inside the decompression channel section 34. However, the chilled water heat exchange channel section 52 does not necessarily have to be located inside the decompression channel section 34; it may be located adjacent to the decompression channel section 34.

[0128] In the embodiments described above, an example of applying the refrigeration cycle device 10 according to the present disclosure to an air conditioning system was explained, but the application of the refrigeration cycle device 10 according to the present disclosure is not limited thereto. For example, the refrigeration cycle device 10 according to the present disclosure may be applied to vehicle air conditioning systems, on-board battery temperature control devices, on-board equipment temperature control devices, refrigeration systems, refrigerators, heating systems, hot water supply systems, etc.

[0129] The configuration of the refrigeration cycle device 10 is not limited to the configuration disclosed in the above-described embodiments. In the above-described embodiments, an example in which a metal-organic structure is used as the adsorbent was described, but it is not limited to this. For example, zeolite, activated carbon, or hydrate may be used as the adsorbent.

[0130] In the above-described embodiment, carbon dioxide was used as the refrigerant for the refrigeration cycle device 10, but the invention is not limited to this. For example, R1234yf, R134a, R600a, R410A, R404A, R32, R407C, R290 (propane), ammonia, or a mixture thereof may be used as the refrigerant.

[0131] The operating mode of the refrigeration cycle device 10 is not limited to the operating mode disclosed in the above-described embodiments. In the above-described embodiments, the state of the discharged refrigerant discharged from the compressor 21 is not described, but the state of the discharged refrigerant changes depending on the type of refrigerant, the ambient temperature, etc. For example, the discharged refrigerant may be in a supercritical state where the pressure is above the critical pressure of the refrigerant, or it may be in a subcritical state where the pressure is below the critical pressure of the refrigerant.

[0132] In the fourth embodiment described above, the state of the mixed refrigerant discharged from the adsorber 22 is not described in detail, but the state of the refrigerant discharged from the adsorber 22 varies depending on the type of refrigerant, the ambient temperature, etc. For example, depending on the type of refrigerant, the ambient temperature, etc., the refrigerant discharged from the adsorber 22 may be in a supercritical state, or it may be in a subcritical state as a liquid-phase refrigerant, a gas-liquid two-phase refrigerant, or a gas-phase refrigerant.

[0133] The means disclosed in each of the above embodiments may be combined as appropriate to the extent that they are feasible. The features of the refrigeration cycle apparatus disclosed herein are as follows. (Item 1) The adsorbent circulation circuit (30) through which an adsorbent that adsorbs and desorbs a refrigerant circulates; an adsorption section (22) that supplies the refrigerant to be adsorbed onto the adsorbent; a desorption section (24) through which the refrigerant desorbed from the adsorbent flows; a compression section (21) that sucks in the refrigerant from the desorption section, compresses it, and discharges it to the adsorption section; a first heat medium flow path (42) through which a first heat medium heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant flows; a second heat medium flow path (52) through which a second heat medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant flows; the adsorbent circulation circuit comprises: an adsorbent pumping section (31) that sucks in and pumps the adsorbent; an adsorption flow path (32) that allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorption section; and an adsorbent depressurization section (33) that depressurizes the adsorbent that has flowed out of the adsorption flow path. (Item 2) The refrigeration cycle apparatus comprising: an adsorption channel section (34) that desorbs the refrigerant from the adsorbent which has been depressurized in the adsorption channel section, causes the adsorbent to be drawn into the adsorption pressure section, and causes the refrigerant to flow out to the desorption section, wherein the adsorption channel section has an adsorption-side permeable member (32a) that is in contact with the adsorption section and permeates the refrigerant but not the adsorbent, and the first heat medium channel section has an adsorption-side heat transfer member (42a) that is in contact with the adsorption channel section and transfers the heat from the adsorption channel section to the first heat medium.(Item 5) The refrigeration cycle apparatus according to any one of items 1 to 4, wherein the direction of flow of the adsorbent in the adsorption channel and the direction of flow of the first heat medium in the first heat medium channel are opposite to each other. (Item 6) The refrigeration cycle apparatus according to any one of items 1 to 5, wherein the adsorption-side heat transfer member is provided with a first heat transfer fin (42b) that increases the heat transfer area from the adsorption channel to the first heat medium. (Item 7) The refrigeration cycle apparatus according to any one of items 1 to 6, wherein the amount of adsorption of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, and the amount of adsorption when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, and the adsorption channel is formed to a length such that the increase in the amount of adsorption in the adsorption channel is 50% or more of the saturated adsorption amount. (Item 8) The refrigeration cycle apparatus according to any one of Items 1 to 7, wherein the adsorption amount of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, the adsorption amount when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, the rate at which the adsorption amount increases is defined as the adsorption rate, and the average adsorption rate is defined as the average adsorption rate from when the adsorption amount increases from 0 to 99% of the saturated adsorption amount, the adsorption flow path is formed to a length such that the adsorption rate in the adsorption flow path is less than or equal to the average adsorption rate. (Item 9) The refrigeration cycle apparatus according to Item 1, further comprising a heat medium refrigerant heat exchange flow path (44) in which the first heat medium flows in series with the first heat medium flow path and causes the first heat medium to exchange heat with the refrigerant in the adsorption section. (Item 10) The refrigeration cycle apparatus according to any one of items 1 to 9, wherein the desorption channel section has a desorption-side permeable member (34a) that is in contact with the desorption section and permeates the refrigerant but not the adsorbent, and the second heat transfer medium channel section has a desorption-side heat transfer member (52a) that is in contact with the desorption channel section and transfers the heat of the second heat transfer medium to the desorption channel section.(Item 11) The adsorbent circulation circuit (30) through which an adsorbent that adsorbs and desorbs a refrigerant circulates; an adsorption section (22) that supplies the refrigerant to be adsorbed onto the adsorbent; a desorption section (24) through which the refrigerant desorbed from the adsorbent flows; a compression section (21) that sucks in the refrigerant from the desorption section, compresses it, and discharges it to the adsorption section; a first heat medium flow path (42) through which a first heat medium heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant flows; a second heat medium flow path (52) through which a second heat medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant flows; the adsorbent circulation circuit comprises: an adsorbent pumping section (31) that sucks in and pumps the adsorbent; an adsorption flow path (32) that allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorption section; and an adsorbent depressurization section (33) that depressurizes the adsorbent that has flowed out of the adsorption flow path. A refrigeration cycle device comprising: a desorption channel section (34) that desorbs the refrigerant from the adsorbent which has been depressurized in the adsorbent depressurization section, causes the adsorbent to be drawn into the adsorbent pressure section, and causes the refrigerant to flow out to the desorption section, wherein the desorption channel section has a desorption-side permeable member (34a) that is in contact with the desorption section and permeates the refrigerant but not the adsorbent, and the second heat medium channel section has a desorption-side heat transfer member (52a) that is in contact with the desorption channel section and transmits the heat of the second heat medium to the desorption channel section. (Item 12) The refrigeration cycle device according to item 10 or 11, wherein the desorption channel section is interposed between the desorption section and the second heat medium channel section. (Item 13) The refrigeration cycle device according to any one of items 10 to 12, wherein the second heat medium channel section is located inside the desorption channel section. (Item 14) The refrigeration cycle apparatus according to any one of items 10 to 13, wherein the direction of the flow of the refrigerant in the desorption section and the direction of the flow of the adsorbent in the desorption channel section are opposite to each other. (Item 15) The refrigeration cycle apparatus according to any one of items 10 to 14, wherein the direction of the flow of the adsorbent in the desorption channel section and the direction of the flow of the second heat medium in the second heat medium channel section are opposite to each other.(Item 16) The refrigeration cycle apparatus according to any one of items 10 to 15, wherein the desorption-side heat transfer member is provided with a second heat transfer fin (52b) that increases the heat transfer area from the desorption-side channel to the second heat transfer medium channel. (Item 17) The refrigeration cycle apparatus according to any one of items 10 to 16, wherein the amount of adsorption of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, and the amount of adsorption when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, the desorption-side channel is formed to a length such that the amount of adsorption that decreases in the desorption-side channel is 50% or more of the saturated adsorption amount. (Item 18) The refrigeration cycle apparatus according to any one of items 10 to 17, wherein the amount of adsorption of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, the amount of adsorption when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, the rate at which the adsorption amount decreases is defined as the desorption rate, and the average desorption rate is defined as the average desorption rate until the adsorption amount decreases from the saturated adsorption amount to 1% of the saturated adsorption amount, the desorption channel is formed to a length such that the desorption rate in the desorption channel is less than or equal to the average desorption rate.

[0134] This disclosure is described in accordance with the embodiments, but it is understood that this disclosure is not limited to such embodiments or structures. This disclosure also includes various modifications and variations within the equivalence. In addition, various combinations and forms, as well as other combinations and forms that include only one, more, or fewer of those elements, fall within the scope and concept of this disclosure.

Claims

1. The adsorbent circulation circuit (30) through which an adsorbent that adsorbs and desorbs a refrigerant circulates; an adsorption section (22) that supplies the refrigerant to be adsorbed onto the adsorbent; a desorption section (24) through which the refrigerant desorbed from the adsorbent flows; a compression section (21) that sucks in the refrigerant from the desorption section, compresses it, and discharges it to the adsorption section; a first heat medium flow path (42) through which a first heat medium heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant flows; and a second heat medium flow path (52) through which a second heat medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant flows. The adsorbent circulation circuit comprises: an adsorbent pumping section (31) that sucks in and pumps the adsorbent; an adsorption flow path (32) that allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorption section; and an adsorbent depressurization section (33) that depressurizes the adsorbent that has flowed out of the adsorption flow path. A refrigeration cycle device comprising: a desorption channel section (34) that desorbs the refrigerant from the adsorbent, which has been depressurized in the adsorbent depressurization section, and causes the adsorbent to be drawn into the adsorbent pressure section and the refrigerant to flow out to the desorption section; the adsorption channel section has an adsorption-side permeable member (32a) that is in contact with the adsorption section and permeates the refrigerant but not the adsorbent; and the first heat transfer medium channel section has an adsorption-side heat transfer member (42a) that is in contact with the adsorption channel section and transfers the heat from the adsorption channel section to the first heat transfer medium.

2. The refrigeration cycle apparatus according to claim 1, wherein the adsorption channel is interposed between the adsorption channel and the first heat transfer medium channel.

3. The refrigeration cycle apparatus according to claim 1, wherein the first heat transfer medium flow channel is located inside the adsorption flow channel.

4. The refrigeration cycle apparatus according to claim 1, wherein the direction of the flow of the refrigerant in the adsorption section and the direction of the flow of the adsorbent in the adsorption flow channel section are opposite to each other.

5. The refrigeration cycle apparatus according to claim 1, wherein the direction of flow of the adsorbent in the adsorption channel and the direction of flow of the first heat medium in the first heat medium channel are opposite to each other.

6. The refrigeration cycle apparatus according to claim 1, wherein the adsorption-side heat transfer member is provided with a first heat transfer fin (42b) that increases the heat transfer area from the adsorption flow channel to the first heat transfer medium.

7. The refrigeration cycle apparatus according to claim 1, wherein the amount of adsorption of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, and the amount of adsorption when the adsorption of the refrigerant to the adsorbent is saturated is defined as the saturated adsorption amount, and the adsorption channel is formed to a length such that the amount of adsorption that increases in the adsorption channel is 50% or more of the saturated adsorption amount.

8. The refrigeration cycle apparatus according to claim 1, wherein the mass of the refrigerant adsorbed on the adsorbent per unit mass of the adsorbent is defined as the adsorption amount, the amount of adsorption when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, the rate at which the adsorption amount increases is defined as the adsorption rate, and the average adsorption rate is defined as the average adsorption rate from when the adsorption amount increases from 0 to 99% of the saturated adsorption amount, the adsorption channel is formed to a length such that the adsorption rate in the adsorption channel is less than or equal to the average adsorption rate.

9. The refrigeration cycle apparatus according to claim 1, further comprising a heat medium refrigerant heat exchange channel section (44) in which the first heat medium flows in series with the first heat medium channel section and the first heat medium exchanges heat with the refrigerant in the adsorption section.

10. The refrigeration cycle apparatus according to claim 1, wherein the desorption channel section has a desorption-side permeable member (34a) that is in contact with the desorption section and permeates the refrigerant but not the adsorbent, and the second heat transfer medium channel section has a desorption-side heat transfer member (52a) that is in contact with the desorption channel section and transfers the heat of the second heat transfer medium to the desorption channel section.

11. The adsorbent circulation circuit (30) through which an adsorbent that adsorbs and desorbs a refrigerant circulates; an adsorption section (22) that supplies the refrigerant to be adsorbed onto the adsorbent; a desorption section (24) through which the refrigerant desorbed from the adsorbent flows; a compression section (21) that sucks in the refrigerant from the desorption section, compresses it, and discharges it to the adsorption section; a first heat medium flow path (42) through which a first heat medium heated by the heat of adsorption released when the adsorbent adsorbs the refrigerant flows; a second heat medium flow path (52) through which a second heat medium that supplies the heat of adsorption absorbed when the adsorbent desorbs the refrigerant flows; the adsorbent circulation circuit comprises: an adsorbent pumping section (31) that sucks in and pumps the adsorbent; an adsorption flow path (32) that allows the adsorbent pumped from the adsorbent pumping section to adsorb the refrigerant from the adsorption section; and an adsorbent depressurization section (33) that depressurizes the adsorbent that has flowed out of the adsorption flow path. A refrigeration cycle device comprising: a desorption channel section (34) that desorbs the refrigerant from the adsorbent, which has been depressurized in the adsorbent depressurization section, and causes the adsorbent to be drawn into the adsorbent pressure section and the refrigerant to flow out to the desorption section, wherein the desorption channel section has a desorption-side permeable member (34a) that is in contact with the desorption section and permeates the refrigerant but not the adsorbent, and the second heat transfer medium channel section has a desorption-side heat transfer member (52a) that is in contact with the desorption channel section and transmits the heat of the second heat transfer medium to the desorption channel section.

12. The refrigeration cycle apparatus according to claim 10 or 11, wherein the detachable channel is interposed between the detachable channel and the second heat transfer medium channel.

13. The refrigeration cycle apparatus according to claim 10 or 11, wherein the second heat transfer medium flow channel is located inside the desorption flow channel.

14. The refrigeration cycle apparatus according to claim 10 or 11, wherein the direction of the refrigerant flow in the desorption section and the direction of the adsorbent flow in the desorption channel section are opposite to each other.

15. The refrigeration cycle apparatus according to claim 10 or 11, wherein the direction of flow of the adsorbent in the desorption channel and the direction of flow of the second heat medium in the second heat medium channel are opposite to each other.

16. The refrigeration cycle apparatus according to claim 10 or 11, wherein the detachable heat transfer member is provided with a second heat transfer fin (52b) that increases the heat transfer area from the detachable flow channel to the second heat transfer medium flow channel.

17. The refrigeration cycle apparatus according to claim 10 or 11, wherein the amount of adsorption of the refrigerant adsorbed on the adsorbent is defined as the mass per unit mass of the adsorbent, and the amount of adsorption when the adsorption of the refrigerant to the adsorbent is saturated is defined as the saturated adsorption amount, and the desorption channel is formed to a length such that the amount of adsorption that decreases in the desorption channel is 50% or more of the saturated adsorption amount.

18. The refrigeration cycle apparatus according to claim 10 or 11, wherein the mass of the refrigerant adsorbed on the adsorbent is defined as the adsorption amount per unit mass of the adsorbent, the adsorption amount when the adsorption of the refrigerant on the adsorbent is saturated is defined as the saturated adsorption amount, the rate at which the adsorption amount decreases is defined as the desorption rate, and the average desorption rate is defined as the average desorption rate until the adsorption amount decreases from the saturated adsorption amount to 1% of the saturated adsorption amount, the desorption channel is formed to a length such that the desorption rate in the desorption channel is less than or equal to the average desorption rate.

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