Refrigeration cycle device

Abstract

The refrigeration cycle device (1, 101, 201, 301, 401, 501) comprises a refrigerant circuit (11, 111, 211, 311, 411, 511) and an adsorbent material. The refrigerant circuit has compressors (31, 131, 231, 331, 431, 531) that compress a refrigerant, and configures a vapor compression type refrigeration cycle in which the refrigerant circulates. The adsorbent adsorbs and desorbs the refrigerant circulating in the refrigerant circuit. The adsorbent adsorbs and desorbs the refrigerant by a change in pressure of the refrigerant circulating in the refrigerant circuit.

Description

Technical Field

[0001] The present disclosure relates to a refrigeration cycle device. Background Art

[0002] Conventionally, a hybrid refrigeration system composed of a vapor compression refrigeration cycle and an adsorption refrigeration cycle is used. Patent document 1 (International Publication No. 2009 / 145278) discloses a hybrid refrigeration system, which alternately repeats the adsorption and desorption of the refrigerant by alternately cooling and heating a pair of adsorbers of the adsorption refrigeration cycle in order to reduce the mechanical workload of the compressor of the vapor compression refrigeration cycle. Summary of the invention Technical problem to be solved by the invention

[0003] Conventionally, there has been no hybrid refrigeration system that uses pressure changes of a refrigerant circulating in a vapor compression refrigeration cycle to control adsorption and desorption of a refrigerant in an adsorption refrigeration cycle. Technical solutions adopted to solve technical problems

[0004] The refrigeration cycle device of the first aspect includes a first unit and an adsorbent. The first unit constitutes a refrigeration cycle for circulating a refrigerant. The adsorbent adsorbs and desorbs the refrigerant circulating in the first unit. The adsorbent adsorbs and desorbs the refrigerant by the pressure change of the refrigerant circulating in the first unit.

[0005] Compared with a refrigeration cycle device without an adsorbent, the refrigeration cycle device of the first aspect has a lower operating pressure and can utilize the adsorption heat and desorption heat of the refrigerant. Therefore, the refrigeration cycle device of the first aspect can suppress costs and improve the efficiency of the refrigeration cycle.

[0006] The refrigeration cycle device of the second aspect includes a first unit and an adsorbent. The first unit has a compressor for compressing a refrigerant and constitutes a vapor compression refrigeration cycle for circulating the refrigerant. The adsorbent adsorbs and desorbs the refrigerant circulating in the first unit. The adsorbent adsorbs and desorbs the refrigerant by the pressure change of the refrigerant circulating in the first unit.

[0007] Compared with a refrigeration cycle device having a vapor compression refrigeration cycle without an adsorbent, the refrigeration cycle device of the second viewpoint has a lower operating pressure and can utilize the adsorption heat and desorption heat of the refrigerant. Therefore, the refrigeration cycle device of the second viewpoint can suppress costs and improve the efficiency of the refrigeration cycle.

[0008] The refrigeration cycle device of the third viewpoint is based on the refrigeration cycle device of the second viewpoint, and the first unit further has an expansion mechanism for decompressing the refrigerant, a high-pressure region, and a low-pressure region. The refrigerant flows in the high-pressure region after being compressed by the compressor and before being decompressed by the expansion mechanism. The refrigerant flows in the low-pressure region after being decompressed by the expansion mechanism and before being compressed by the compressor. The adsorbent adsorbs the refrigerant in the high-pressure region and desorbs the refrigerant in the low-pressure region.

[0009] The refrigeration cycle device of the fourth viewpoint is based on the refrigeration cycle device of the third viewpoint, and the refrigeration cycle device also includes: a first adsorber having an adsorbent material; a second adsorber having an adsorbent material; and a switching unit. The switching unit alternately switches between the first mode and the second mode. In the first mode, the switching unit introduces the refrigerant in the high-pressure region into the first adsorber so that the refrigerant is adsorbed on the adsorbent material of the first adsorber, and introduces the refrigerant in the low-pressure region into the second adsorber so that the refrigerant is desorbed from the adsorbent material of the second adsorber. In the second mode, the switching unit introduces the refrigerant in the low-pressure region into the first adsorber so that the refrigerant is desorbed from the adsorbent material of the first adsorber, and introduces the refrigerant in the high-pressure region into the second adsorber so that the refrigerant is adsorbed on the adsorbent material of the second adsorber.

[0010] A refrigeration cycle device according to a fifth aspect is the refrigeration cycle device according to the third aspect, wherein the adsorbent circulates together with the refrigerant in the first unit.

[0011] The refrigeration cycle device of the sixth aspect is based on the refrigeration cycle device of the fifth aspect, and further includes a separator, which separates the refrigerant circulating in the first unit from the adsorbent. After the adsorbent is separated from the refrigerant by the separator, it merges with the refrigerant compressed by the compressor or the refrigerant decompressed by the expansion mechanism.

[0012] The refrigeration cycle device of the seventh aspect is the refrigeration cycle device of the sixth aspect, and further includes a booster. The separator separates the refrigerant in the low-pressure region from the adsorbent. The booster boosts the pressure of the adsorbent separated from the refrigerant by the separator.

[0013] The refrigeration cycle device of the eighth aspect is the refrigeration cycle device of the sixth aspect or the seventh aspect, and further comprises a decompressor. The separator separates the refrigerant in the high-pressure region from the adsorbent. The decompressor decompresses the adsorbent separated from the refrigerant by the separator.

[0014] A refrigeration cycle device according to a ninth aspect is the refrigeration cycle device according to any one of the sixth to eighth aspects, wherein the separator separates the refrigerant and the adsorbent by centrifugal separation.

[0015] The refrigeration cycle device of the tenth viewpoint is based on the refrigeration cycle device of the third viewpoint, and the refrigeration cycle device also includes a second unit and a mixer. The second unit has a booster for boosting the pressure of the adsorbent material and a reducer for decompressing the adsorbent material. The second unit constitutes an adsorption refrigeration cycle for the adsorbent material to circulate. The mixer mixes the refrigerant flowing in the first unit with the adsorbent material flowing in the second unit. The adsorbent material adsorbs and desorbs the refrigerant in the mixer.

[0016] The refrigeration cycle device of the eleventh aspect is the refrigeration cycle device of the tenth aspect, wherein the mixer has a permeable member. The permeable member is a member through which the refrigerant can pass but the adsorbent cannot pass. The adsorbent adsorbs and desorbs the refrigerant that has passed through the permeable member in the mixer.

[0017] A refrigeration cycle device according to a twelfth aspect is the refrigeration cycle device according to any one of the first to eleventh aspects, wherein the adsorbent includes a metal-organic structure including metal ions and organic ligands.

[0018] A refrigeration cycle device according to a thirteenth aspect is the refrigeration cycle device according to any one of the first to twelfth aspects, wherein the refrigerant is selected from the group consisting of carbon dioxide, ammonia, and propane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a mixed cycle included in a refrigeration cycle device. Figure 2 This is a graph showing the relationship between the adsorption amount of the adsorbent and the pressure of the refrigerant. Figure 3 This is a graph showing the relationship between the adsorption amount of the adsorbent and the enthalpy of the refrigerant. Figure 4 It is a graph showing the relationship between the pressure of the refrigerant and the enthalpy of the refrigerant. Figure 5 It is a graph showing the isotherms of the refrigerant adsorbed on the adsorbent. Figure 6 It is a structural diagram of the refrigeration cycle device of the first embodiment. Figure 7 It is a structural diagram of the refrigeration cycle device of the second embodiment. Figure 8 It is a structural diagram of the refrigeration cycle device of the third embodiment. Fig. 9 It is a structural diagram of the refrigeration cycle device of the fourth embodiment. Fig.10 It is a structural diagram of the refrigeration cycle device of the fifth embodiment. Fig.11This is a structural diagram of a refrigeration cycle device according to modification A. DETAILED DESCRIPTION

[0020] (1) Overall structure The refrigeration cycle device 1 includes a hybrid cycle obtained by combining a vapor compression cycle and an adsorption cycle. The vapor compression cycle refers to a vapor compression type refrigeration cycle, which is a heat pump cycle that uses the transfer of latent heat generated when the refrigerant evaporates and condenses. The adsorption cycle refers to an adsorption type refrigeration cycle, which is a heat pump cycle that uses the transfer of latent heat generated when the refrigerant is adsorbed to an adsorption material and the refrigerant is desorbed from the adsorption material. The refrigeration cycle device 1 is, for example, an air conditioning device and a refrigeration device.

[0021] like Figure 1 As shown, the refrigeration cycle device 1 includes a refrigerant circuit 11 and an adsorption circuit 12. The refrigerant circuit 11 constitutes a vapor compression cycle in which a refrigerant circulates, and the adsorption circuit 12 constitutes an adsorption cycle in which an adsorbent material circulates.

[0022] The refrigeration cycle device 1 may have only one circuit, and this circuit has the function of at least one of the refrigerant circuit 11 and the adsorption circuit 12. In this case, the refrigeration cycle device 1 may have a circuit for circulating a mixture of a refrigerant and an adsorption material. In addition, the refrigeration cycle device 1 may have a circuit for circulating only a refrigerant and including a mechanism for bringing the circulating refrigerant into contact with the adsorption material. In this case, the adsorption material is not circulated.

[0023] The refrigeration cycle device 1 may also have two circuits consisting of a circuit having the function of the refrigerant circuit 11 and a circuit having the function of the adsorption circuit 12. In this case, the refrigeration cycle device 1 includes a mechanism for bringing the refrigerant circulating in the refrigerant circuit 11 into contact with the adsorption material circulating in the adsorption circuit 12. Figure 1 In the figure, for the sake of explanation, the refrigerant circuit 11 and the adsorption circuit 12 are respectively depicted as independent circuits.

[0024] The refrigeration cycle device 1 has an adsorption section 21 and a desorption section 22. The adsorption section 21 and the desorption section 22 together include a portion of the refrigerant circuit 11 and a portion of the adsorption circuit 12. In the adsorption section 21 and the desorption section 22, the refrigerant can freely flow between the refrigerant circuit 11 and the adsorption circuit 12. The adsorption material cannot flow between the refrigerant circuit 11 and the adsorption circuit 12. In the adsorption section 21, the refrigerant flowing from the refrigerant circuit 11 into the adsorption circuit 12 is adsorbed to the adsorption material flowing in the adsorption circuit 12. In the desorption section 22, the refrigerant desorbed from the adsorption material flowing in the adsorption circuit 12 flows from the adsorption circuit 12 into the refrigerant circuit 11.

[0025] The refrigerant circuit 11 includes a compressor 31 and an expansion mechanism 32. The compressor 31 compresses the refrigerant circulating in the refrigerant circuit 11. The expansion mechanism 32 decompresses the refrigerant circulating in the refrigerant circuit 11. The compressor 31 is, for example, a rotary compressor. The expansion mechanism 32 is, for example, an electronic expansion valve. In the refrigerant circuit 11, the refrigerant is compressed by the compressor 31, passes through the adsorption unit 21, is decompressed by the expansion mechanism 32, passes through the desorption unit 22, and is compressed again by the compressor 31.

[0026] The refrigerant circuit 11 has a high-pressure region and a low-pressure region. In the high-pressure region, the refrigerant flows after being compressed by the compressor 31 and before being decompressed by the expansion mechanism 32. In the low-pressure region, the refrigerant flows after being decompressed by the expansion mechanism 32 and before being compressed by the compressor 31. The high-pressure region corresponds to a part of the refrigerant circuit 11 included in the adsorption unit 21. The low-pressure region corresponds to a part of the refrigerant circuit 11 included in the desorption unit 22.

[0027] The refrigerant circulating in the refrigerant circuit 11 is carbon dioxide. Alternatively, the refrigerant may be ammonia or propane.

[0028] The adsorption circuit 12 has a booster 41 and a pressure reducer 42. The booster 41 boosts the pressure of the adsorbent material circulating in the adsorption circuit 12. The pressure reducer 42 reduces the pressure of the adsorbent material circulating in the adsorption circuit 12. The booster 41 is, for example, a powder pump. The pressure reducer 42 is, for example, a powder valve. In the adsorption circuit 12, the adsorbent material is pressurized by the booster 41, passes through the adsorption section 21, is depressurized by the pressure reducer 42, passes through the desorption section 22, and is again pressurized by the booster 41. Depending on the structure of the refrigeration cycle device 1, the adsorption circuit 12 may not have the booster 41 and the pressure reducer 42.

[0029] The adsorption circuit 12 may further include a heat exchanger 43. The heat exchanger 43 performs heat exchange between the upstream side of the booster 41 and the upstream side of the pressure reducer 42. The heat exchanger 43 supplies part of the heat of the adsorbent flowing between the adsorption section 21 and the pressure reducer 42 to the adsorbent flowing between the desorption section 22 and the booster 41.

[0030] The adsorbent material circulating in the adsorption loop 12 includes a metal-organic structure, which includes metal ions and organic ligands. Metal-organic structure (MOF: Metal-Organic Framework) refers to a porous material with a very large specific surface area obtained by the reaction of metal ions and organic ligands. In the metal-organic structure, a polymer structure with countless openings inside is obtained by connecting organic ligands to metal ions. The metal-organic structure can adjust the opening diameter and topological structure by selecting and combining metal ions and organic ligands respectively. The metal-organic structure can adjust the opening diameter by selecting and combining metal ions and organic ligands, so that the target substance can be selectively adsorbed. The metal-organic structure is used as a porous material with the function of selectively storing and separating molecules and ions. In this embodiment, the metal-organic structure is used as an adsorbent material for adsorbing and desorbing refrigerants. Metal-organic structures are, for example, MOF-5 and MOF-200. The adsorbent material is, for example, a powder of the metal-organic structure.

[0031] (2) Action The adsorbent material adsorbs and desorbs the refrigerant circulating in the refrigerant circuit 11. The adsorbent material adsorbs and desorbs the refrigerant by the pressure change of the refrigerant circulating in the refrigerant circuit 11. Specifically, the adsorbent material adsorbs the refrigerant at a high pressure and desorbs the refrigerant at a low pressure.

[0032] Assume that the high-pressure region of the refrigerant circuit 11 is filled with a refrigerant having a pressure of pH and a temperature of TH. Assume that the low-pressure region of the refrigerant circuit 11 is filled with a refrigerant having a pressure of pL and a temperature of TL. The pressure pH is higher than the pressure pL. The temperature TH is higher than the temperature TL. The adsorbent material adsorbs the refrigerant in the high-pressure region of the refrigerant circuit 11. The adsorbent material desorbs the refrigerant in the low-pressure region of the refrigerant circuit 11. In the adsorption section 21, the refrigerant flowing in the high-pressure region of the refrigerant circuit 11 flows into the adsorption circuit 12 and is adsorbed on the adsorbent material. In the desorption section 22, the refrigerant desorbed from the adsorbent material flowing in the adsorption circuit 12 flows into the low-pressure region of the refrigerant circuit 11.

[0033] Reference Figure 1 to Figure 4 , the operation of the heat pump cycle of the refrigeration cycle device 1 is described. Figure 1 to Figure 4 1 and 2 show a cycle of the refrigerant in the refrigerant circuit 11, that is, a→b→c→d→a, and a cycle of the adsorbent in the adsorption circuit 12, that is, a′→b′→c′→d′→a′. Figure 2 The graph shows changes in the adsorption amount and the pressure of the refrigerant adsorbed on the adsorption material in the heat pump cycle, wherein the adsorption amount is the mass of the refrigerant adsorbed on the adsorption material per unit mass. Figure 3The graph shows the adsorption amount of the adsorbent material and the change in enthalpy of the refrigerant adsorbed on the adsorbent material in the heat pump cycle. Figure 4 The graphs of φ show changes in the pressure of the refrigerant and the enthalpy of the refrigerant in the heat pump cycle. In the refrigeration cycle device 1 , it is assumed that heat can flow freely between the refrigerant circuit 11 and the adsorption circuit 12 .

[0034] In the refrigerant circuit 11, the refrigerant is compressed by the compressor 31 (a→b). In the adsorption circuit 12, the adsorbent material is pressurized by the booster 41 (a'→b'). As a result, the pressure of the refrigerant and the adsorbent material rises from pL to pH. In this process, a part of the heat Q1 generated by the adiabatic compression of the refrigerant is provided to the adsorbent material. In other words, the refrigerant is cooled while providing heat to the adsorbent material while being compressed. As a result, the temperature of the refrigerant and the adsorbent material rises from TL to TH.

[0035] Next, in the adsorption unit 21, the refrigerant gradually adsorbs onto the adsorption material while releasing heat Q2 (b'→c'). In this process, the adsorption amount of the adsorption material increases from mL to mH. As a result, in the adsorption unit 21, most of the refrigerant in the refrigerant circuit 11 is adsorbed onto the adsorption material in the adsorption circuit 12. Figure 1 In the adsorption section 21 , as indicated by hatched arrows in the adsorption section 21 , the refrigerant in the refrigerant circuit 11 moves to the adsorption circuit 12 and is adsorbed by the adsorption material.

[0036] Next, in the adsorption circuit 12, the adsorbent is depressurized by the decompressor 42 (c'→d'). As a result, the pressure of the adsorbent is reduced from pH to pL. In this process, the temperature of the adsorbent is reduced from TH to TL due to the isenthalpic expansion of the refrigerant desorbed from the adsorbent. In addition, due to the temperature difference between the refrigerant and the adsorbent, the depressurized adsorbent of the adsorption circuit 12 is cooled, and heat Q3 is provided to the refrigerant of the refrigerant circuit 11. In addition, through the heat exchanger 43, heat Q5 is provided from the adsorbent before being depressurized to the adsorbent before being pressurized.

[0037] Next, in the desorption section 22, the refrigerant gradually desorbs from the adsorbent material while absorbing heat Q4 (d'→a'). In this process, the adsorption amount of the adsorbent material decreases from mH to mL. As a result, most of the refrigerant adsorbed on the adsorbent material of the adsorption circuit 12 is desorbed and flows into the refrigerant circuit 11. Figure 1 In the desorption section 22 , as indicated by hatched arrows in the desorption section 22 , the refrigerant desorbed from the adsorbent in the desorption circuit 12 moves to the refrigerant circuit 11 .

[0038] like Figure 2As shown in the figure, in the adsorption process (b'→c') where the refrigerant is adsorbed to the adsorbent material, the pressure is pH, and the adsorption amount of the adsorbent material increases from mL to mH. In the desorption process (d'→a') where the refrigerant is desorbed from the adsorbent material, the pressure is pL, and the adsorption amount of the adsorbent material decreases from mH to mL. Figure 3 As shown, during the adsorption process, the enthalpy decreases by Δh1. During the desorption process, the enthalpy increases by Δh2. During the adsorption process, the heat Q2 released from the adsorption part 21 is proportional to Δh1. During the desorption process, the heat Q4 absorbed by the adsorption part 22 is proportional to Δh2.

[0039] Assume that the change in enthalpy caused by the heat exchange performed by the heat exchanger 43 is Δh3. Assume that the change in enthalpy caused by the heating of the adsorbent material during the pressure increase process (a'→b') of the adsorbent material is Δh4. Assume that the change in enthalpy caused by the cooling of the adsorbent material during the pressure reduction process (c'→d') of the adsorbent material is Δh5. Figure 4 As shown in the figure, the change in total enthalpy during the compression process (a→b) of the refrigerant is expressed as Δh4-Δh3. The change in total enthalpy during the decompression process (c'→d') of the adsorbent material is expressed as Δh5-Δh3. Figure 4 In FIG. 1 , the state change of the refrigerant during adiabatic compression is indicated by a dotted arrow, and the state change of the refrigerant during isenthalpic expansion is indicated by a single-dot chain arrow.

[0040] Figure 5 The isotherms of the refrigerant during adsorption and desorption are shown in the heat pump cycle suitable for the refrigeration cycle device 1. Figure 5 In the isotherm of temperature TH, a solid line is used to represent the isotherm of temperature TL, and a dashed line is used to represent the isotherm of temperature TL. In the adsorption process (b'→c'), when the refrigerant is adsorbed to the adsorbent material at a pressure of pH and a temperature of TH, it is preferred that the adsorption amount of the adsorbent material increases from mL to mH at a pressure between pL and pH on the isotherm of temperature TH. In the desorption process (d'→a'), when the refrigerant is desorbed from the adsorbent material at a pressure of pL and a temperature of TL, it is preferred that the adsorption amount of the adsorbent material decreases from mH to mL at a pressure between pL and pH on the isotherm of temperature TL.

[0041] (3) Detailed structure Reference Figure 6 to Figure 10 , for Figure 1 First to fifth embodiments of the specific structure of the refrigeration cycle apparatus 1 shown will be described.

[0042] (3-1) First Embodiment like Figure 6As shown, the refrigeration cycle device 101 of this embodiment has a first refrigerant circuit 111 for a primary refrigerant circulation and a second refrigerant circuit 112 for a secondary refrigerant circulation. Figure 6 In FIG. 1 , the first refrigerant circuit 111 is depicted with a thick line. The first refrigerant circuit 111 corresponds to Figure 1 The refrigeration cycle device 101 does not have a refrigerant circuit 11 equivalent to Figure 1 The adsorption circuit 12 is a circuit in which the adsorption material circulates. In the refrigeration cycle device 101, the adsorption material is provided in the first refrigerant circuit 111. The secondary refrigerant is, for example, water.

[0043] The first refrigerant circuit 111 includes a compressor 131, an expansion mechanism 132, a first adsorber 133, a second adsorber 134, and a switch 135. The compressor 131 corresponds to Figure 1 The compressor 31. The expansion mechanism 132 is equivalent to Figure 1 Expansion mechanism 32.

[0044] The first adsorber 133 has a first adsorbent 133 a therein. The primary refrigerant passing through the first adsorber 133 comes into contact with the first adsorbent 133 a. The first adsorbent 133 a is housed in a container formed of, for example, a metal mesh and fixed to the inside of the first adsorber 133 .

[0045] The second adsorber 134 has a second adsorbent 134 a therein. The primary refrigerant passing through the second adsorber 134 comes into contact with the second adsorbent 134 a. The second adsorbent 134 a is housed in a container formed of, for example, a metal mesh and fixed to the inside of the second adsorber 134 .

[0046] The switch unit 135 switches the flow direction of the primary refrigerant circulating in the first refrigerant circuit 111. The switch unit 135 is, for example, a four-way reversing valve. Figure 6 The solid line shows the first mode of flow direction with Figure 6 In the first mode, the discharge side of the compressor 131 is connected to the first adsorber 133, and the suction side of the compressor 131 is connected to the second adsorber 134. In the second mode, the discharge side of the compressor 131 is connected to the second adsorber 134, and the suction side of the compressor 131 is connected to the first adsorber 133.

[0047] The second refrigerant circuit 112 includes a first fluid pump 141 , a first heat exchanger 142 , a first fan 143 , a first tank 144 , a second fluid pump 151 , a second heat exchanger 152 , a second fan 153 , a second tank 154 , and four flow path changing sections 161 - 164 .

[0048] The first fluid pump 141 delivers the secondary refrigerant to the first heat exchanger 142. The first heat exchanger 142 performs heat exchange between the secondary refrigerant and the air. The first fan 143 delivers the air that has undergone heat exchange in the first heat exchanger 142 to a predetermined location. The first tank 144 has the first adsorber 133 inside, and performs heat exchange between the primary refrigerant and the secondary refrigerant.

[0049] The second fluid pump 151 delivers the secondary refrigerant to the second heat exchanger 152. The second heat exchanger 152 performs heat exchange between the secondary refrigerant and the air. The second fan 153 delivers the air that has undergone heat exchange in the second heat exchanger 152 to a predetermined location. The second tank 154 has the second adsorber 134 inside, and performs heat exchange between the primary refrigerant and the secondary refrigerant.

[0050] The flow path changing parts 161 to 164 switch the connection state of the second refrigerant circuit 112 to change the flow path through which the secondary refrigerant flows. The flow path changing parts 161 to 164 are, for example, three-way switching valves. Figure 6 The third mode of connection state shown by the solid line is Figure 6 The connection state shown by the dotted line switches between the fourth modes.

[0051] The second refrigerant circuit 112 has two circuits that are independent of each other in the third mode and the fourth mode. The two circuits of the second refrigerant circuit 112 are referred to as a first circulation circuit and a second circulation circuit. Figure 6 , the flow direction of the secondary refrigerant in the third mode is indicated by a solid line, and the flow direction of the secondary refrigerant in the fourth mode is indicated by a dotted line.

[0052] In the third mode, the first circulation loop is a loop connected by the first fluid pump 141, the first heat exchanger 142, the flow path changer 161, the first tank 144, and the flow path changer 162. In the third mode, the second circulation loop is a loop connected by the second fluid pump 151, the second heat exchanger 152, the flow path changer 163, the second tank 154, and the flow path changer 164.

[0053] In the fourth mode, the first circulation loop is a loop connected to the first fluid pump 141, the first heat exchanger 142, the flow path changer 161, the second tank 154, and the flow path changer 162. In the fourth mode, the second circulation loop is a loop connected to the second fluid pump 151, the second heat exchanger 152, the flow path changer 163, the first tank 144, and the flow path changer 164.

[0054] The case where the refrigeration cycle device 101 is an air conditioning device is described. The first heat exchanger 142 is an indoor heat exchanger, and the second heat exchanger 152 is an outdoor heat exchanger. When the refrigeration cycle device 101 is in heating operation, the secondary refrigerant that is heated by heat exchange with the primary refrigerant passes through the first heat exchanger 142. Therefore, the secondary refrigerant circulating in the first circulation loop having the first heat exchanger 142 needs to contact the adsorber having an adsorbent material for adsorbing the primary refrigerant in the first adsorber 133 and the second adsorber 134. The air that is heated by heat exchange with the secondary refrigerant in the first heat exchanger 142 is transported to a specified place by the first fan 143.

[0055] In the first mode, high-pressure primary refrigerant is introduced into the first adsorber 133 and adsorbed by the first adsorbent 133a. In the first mode, low-pressure primary refrigerant is introduced into the second adsorber 134 and desorbed from the second adsorbent 134a.

[0056] In the second mode, high-pressure primary refrigerant is introduced into the second adsorber 134 and adsorbed by the second adsorbent 134a. In the second mode, low-pressure primary refrigerant is introduced into the first adsorber 133 and desorbed from the first adsorbent 133a.

[0057] Therefore, in the first mode, it is necessary to switch to the third mode in which the secondary refrigerant passes through the first tank 144 having the first adsorber 133 and the first heat exchanger 142. In addition, in the second mode, it is necessary to switch to the fourth mode in which the secondary refrigerant passes through the second tank 154 having the second adsorber 134 and the first heat exchanger 142.

[0058] When the refrigeration cycle device 101 is operated in the first mode and the third mode, the adsorption amount of the first adsorbent material 133a of the first adsorber 133 reaches the maximum value mH, and it becomes difficult for the first adsorbent material 133a to adsorb the primary refrigerant. Thereafter, when switching from the first mode to the second mode, the primary refrigerant is adsorbed to the second adsorbent material 134a of the second adsorber 134, and the primary refrigerant is desorbed from the first adsorbent material 133a of the first adsorber 133. Therefore, after switching to the second mode, it is necessary to switch from the third mode to the fourth mode in which the secondary refrigerant passes through the second tank 154 having the second adsorber 134 and the first heat exchanger 142.

[0059] When the refrigeration cycle device 101 is operated in the second mode and the fourth mode, the adsorption amount of the second adsorbent material 134a of the second adsorber 134 reaches the maximum value mH, and it becomes difficult for the second adsorbent material 134a to adsorb the primary refrigerant. Thereafter, when switching from the second mode to the first mode, the primary refrigerant is adsorbed to the second adsorbent material 133a of the first adsorber 133, and the primary refrigerant is desorbed from the second adsorbent material 134a of the second adsorber 134. Therefore, after switching to the first mode, it is necessary to switch from the fourth mode to the third mode in which the secondary refrigerant passes through the first tank 144 having the first adsorber 133 and the first heat exchanger 142.

[0060] Therefore, by alternately switching between the first mode and the second mode, the primary refrigerant can be adsorbed to the adsorbent material in either the first adsorber 133 or the second adsorber 134, thereby always heating the primary refrigerant. In addition, by alternately switching between the third mode and the fourth mode corresponding to the switching between the first mode and the second mode, the secondary refrigerant heated by heat exchange with the primary refrigerant can always be supplied to the first heat exchanger 142.

[0061] (3-2) Second Embodiment like Figure 7 As shown, the refrigeration cycle device 201 of this embodiment has a refrigerant circuit 211 for circulating refrigerant. The refrigerant circuit 211 includes Figure 1 The refrigeration cycle device 201 has the functions of both the refrigerant circuit 11 and the adsorption circuit 12. The adsorption material circulates in the refrigerant circuit 211 together with the refrigerant. In other words, in the refrigeration cycle device 201, a mixture of the refrigerant and the adsorption material circulates in the refrigerant circuit 211.

[0062] The refrigerant circuit 211 includes a compressor 231, an expansion mechanism 232, a first heat exchanger 233, a second heat exchanger 234, a switching unit 235, a first fan 236, and a second fan 237. The compressor 231 includes Figure 1 The expansion mechanism 232 includes the functions of the compressor 31 and the booster 41. Figure 1 The functions of both the expansion mechanism 32 and the pressure reducer 42 are realized.

[0063] The switching unit 235 switches the flow direction of the mixture of the refrigerant and the adsorbent material circulating in the refrigerant circuit 211. The switching unit 235 is, for example, a four-way reversing valve. Figure 7 The solid line shows the first mode of flow direction with Figure 7In the first mode, the discharge side of the compressor 231 is connected to the first heat exchanger 233, and the suction side of the compressor 231 is connected to the second heat exchanger 234. In the second mode, the discharge side of the compressor 231 is connected to the second heat exchanger 234, and the suction side of the compressor 231 is connected to the first heat exchanger 233.

[0064] In the first heat exchanger 233, the high-pressure refrigerant is adsorbed to the adsorbent material in the first mode, and the low-pressure refrigerant is desorbed from the adsorbent material in the second mode. In the second heat exchanger 234, the low-pressure refrigerant is desorbed from the adsorbent material in the first mode, and the high-pressure refrigerant is adsorbed to the adsorbent material in the second mode. In the first heat exchanger 233 and the second heat exchanger 234, the refrigerant is adsorbed to the adsorbent material so that the refrigerant is heated, or the refrigerant is desorbed from the adsorbent material so that the refrigerant is cooled. As a result, heat exchange is performed between the heated or cooled refrigerant and the air in the first heat exchanger 233 and the second heat exchanger 234. The first fan 236 transports the air that has undergone superheat exchange in the first heat exchanger 233 to a predetermined location. The second fan 237 transports the air that has undergone superheat exchange in the second heat exchanger 234 to a predetermined location.

[0065] In this way, in the refrigeration cycle device 201, while the mixture of the refrigerant and the adsorbent material circulates in the refrigerant circuit 211, the refrigerant is heated or cooled, and the air after heat exchange with the refrigerant is transported to a specified place. The case where the refrigeration cycle device 201 is an air conditioning device is described. The first heat exchanger 233 is an indoor heat exchanger, and the second heat exchanger 234 is an outdoor heat exchanger. When the refrigeration cycle device 201 is in heating operation, by switching to the first mode, the refrigerant is adsorbed to the adsorbent material in the first heat exchanger 233, so that the refrigerant is heated. The air heated by heat exchange with the refrigerant is transported to a specified place by the first fan 236.

[0066] (3-3) Third Embodiment like Figure 8 As shown, the refrigeration cycle device 301 of this embodiment has a refrigerant circuit 311 for circulating refrigerant. The refrigerant circuit 311 includes Figure 1 The refrigeration cycle device 301 has the functions of both the refrigerant circuit 11 and the adsorption circuit 12. The adsorption material flows in a part of the refrigerant circuit 311 together with the refrigerant. In other words, in the refrigeration cycle device 301, a mixture of the refrigerant and the adsorption material circulates in the refrigerant circuit 311.

[0067] The refrigerant circuit 311 includes a compressor 331, an expansion mechanism 332, a first heat exchanger 333, a second heat exchanger 334, a switching unit 335, a first fan 336, a second fan 337, a booster 341, and a separator 351. The compressor 331 corresponds to Figure 1 The compressor 31. The booster 341 is equivalent to Figure 1 The booster 41. The expansion mechanism 332 includes Figure 1 The functions of both the expansion mechanism 32 and the pressure reducer 42 are realized.

[0068] The switch unit 335 switches the flow direction of the mixture of the refrigerant and the adsorbent material circulating in the refrigerant circuit 311. The switch unit 335 is, for example, a four-way reversing valve. Figure 8 The solid line shows the first mode of flow direction with Figure 8 In the first mode, the discharge sides of the compressor 331 and the booster 341 are connected to the first heat exchanger 333, and the suction sides of the compressor 331 and the booster 341 are connected to the second heat exchanger 334. In the second mode, the discharge sides of the compressor 331 and the booster 341 are connected to the second heat exchanger 334, and the suction sides of the compressor 331 and the booster 341 are connected to the first heat exchanger 333.

[0069] The separator 351 is provided between the suction sides of the compressor 331 and the booster 341 and the switch unit 335 .

[0070] The separator 351 separates the mixture of the refrigerant and the adsorbent material in the low-pressure region circulating in the refrigerant circuit 311 into the refrigerant and the adsorbent material. The separator 351 separates the refrigerant and the adsorbent material by, for example, centrifugal separation. The refrigerant separated by the separator 351 is compressed in the compressor 331. The adsorbent material separated by the separator 351 is pressurized in the booster 341. Figure 8 As shown, the adsorbent material boosted by the booster 341 merges with the refrigerant compressed in the compressor 331. After merging, the refrigerant and the adsorbent are sent to the switch 335. In this way, the refrigerant circuit 311 branches in the separator 351 and merges between the compressor 331 / booster 341 and the switch 335.

[0071] In the first heat exchanger 333, the high-pressure refrigerant is adsorbed to the adsorbent material in the first mode, and the low-pressure refrigerant is desorbed from the adsorbent material in the second mode. In the second heat exchanger 334, the low-pressure refrigerant is desorbed from the adsorbent material in the first mode, and the high-pressure refrigerant is adsorbed to the adsorbent material in the second mode. In the first heat exchanger 333 and the second heat exchanger 334, the refrigerant is adsorbed to the adsorbent material so that the refrigerant is heated, or the refrigerant is desorbed from the adsorbent material so that the refrigerant is cooled. As a result, heat is exchanged between the heated or cooled refrigerant and the air in the first heat exchanger 333 and the second heat exchanger 334. The first fan 336 transports the air that has undergone superheat exchange in the first heat exchanger 333 to a predetermined location. The second fan 337 transports the air that has undergone superheat exchange in the second heat exchanger 334 to a predetermined location.

[0072] In this way, in the refrigeration cycle device 301, while the mixture of the refrigerant and the adsorbent material circulates in the refrigerant circuit 311, the refrigerant is heated or cooled, and the air after heat exchange with the refrigerant is transported to a specified place. The case where the refrigeration cycle device 301 is an air conditioning device is described. The first heat exchanger 333 is an indoor heat exchanger, and the second heat exchanger 334 is an outdoor heat exchanger. When the refrigeration cycle device 301 is in heating operation, by switching to the first mode, the refrigerant is adsorbed to the adsorbent material in the first heat exchanger 333, so that the refrigerant is heated. The air heated by heat exchange with the refrigerant is transported to a specified place by the first fan 336.

[0073] (3-4) Fourth Embodiment like Fig. 9 As shown, the refrigeration cycle device 401 of this embodiment has a refrigerant circuit 411 for circulating refrigerant. The refrigerant circuit 411 includes Figure 1 The refrigeration cycle device 401 has the functions of both the refrigerant circuit 11 and the adsorption circuit 12. The adsorption material flows in a part of the refrigerant circuit 411 together with the refrigerant. In other words, in the refrigeration cycle device 401, a mixture of the refrigerant and the adsorption material circulates in the refrigerant circuit 411.

[0074] The refrigerant circuit 411 includes a compressor 431, an expansion mechanism 432, a first heat exchanger 433, a second heat exchanger 434, a switching unit 435, a first fan 436, a second fan 437, a booster 441, a decompressor 442, a first separator 451, and a second separator 452. The compressor 431 corresponds to Figure 1 The compressor 31. The booster 441 is equivalent to Figure 1 The booster 41. The expansion mechanism 432 is equivalent to Figure 1 The expansion mechanism 32. The pressure reducer 442 is equivalent to Figure 1The pressure reducer 42.

[0075] The switch 435 switches the flow direction of the mixture of the refrigerant and the adsorbent material circulating in the refrigerant circuit 411. The switch 435 is, for example, a four-way reversing valve. Fig. 9 The solid line shows the first mode of flow direction with Fig. 9 43. The flow direction shown by the dotted line is switched between the second mode. In the first mode, the discharge side of the compressor 431 and the booster 441 is connected to the first heat exchanger 433, and the suction side of the compressor 431 and the booster 441 is connected to the second heat exchanger 434. In the first mode, the suction side of the expansion mechanism 432 and the pressure reducer 442 is connected to the first heat exchanger 433, and the discharge side of the expansion mechanism 432 and the pressure reducer 442 is connected to the second heat exchanger 434. In the second mode, the discharge side of the compressor 431 and the booster 441 is connected to the second heat exchanger 434, and the suction side of the compressor 431 and the booster 441 is connected to the first heat exchanger 433. In the second mode, the suction side of the expansion mechanism 432 and the pressure reducer 442 is connected to the second heat exchanger 434, and the discharge side of the expansion mechanism 432 and the pressure reducer 442 is connected to the first heat exchanger 433.

[0076] The first separator 451 is provided between the suction side of the compressor 431 and the booster 441 and the switch 435. The second separator 452 is provided between the suction side of the expansion mechanism 432 and the decompressor 442 and the first heat exchanger 433 in the first mode.

[0077] The first separator 451 separates the mixture of the refrigerant and the adsorbent material in the low-pressure region circulating in the refrigerant circuit 411 into the refrigerant and the adsorbent material. The first separator 451 separates the refrigerant and the adsorbent material by, for example, centrifugal separation. The refrigerant separated by the first separator 451 is compressed in the compressor 431. The adsorbent material separated by the first separator 451 is pressurized by the booster 441. Fig. 9 As shown, the adsorbent material boosted by the booster 441 merges with the refrigerant compressed in the compressor 431. After merging, the refrigerant and the adsorbent are delivered to the switch 435. In this way, the refrigerant circuit 411 branches in the first separator 451 and merges between the compressor 431 / booster 441 and the switch 435.

[0078] In the first mode, the second separator 452 separates the mixture of the refrigerant and the adsorbent material in the high-pressure region circulating in the refrigerant circuit 411 into the refrigerant and the adsorbent material. The second separator 452 separates the refrigerant and the adsorbent material by, for example, centrifugal separation. The refrigerant separated by the second separator 452 is decompressed in the expansion mechanism 432. The adsorbent material separated by the second separator 452 is decompressed by the decompressor 442. Fig. 9 As shown, the adsorbent material after being decompressed by the decompressor 442 merges with the refrigerant after being decompressed in the expansion mechanism 432. After merging, the refrigerant and the adsorbent material are delivered to the second heat exchanger 434. In this way, in the first mode, the refrigerant circuit 411 is branched in the second separator 452 and merges between the expansion mechanism 432 / decompressor 442 and the second heat exchanger 434. In the second mode, the decompressor 442 is closed, and the mixture of the refrigerant and the adsorbent material is decompressed in the expansion mechanism 432, and then delivered to the first heat exchanger 433 through the second separator 452.

[0079] In the first heat exchanger 433, the high-pressure refrigerant is adsorbed to the adsorbent material in the first mode, and the low-pressure refrigerant is desorbed from the adsorbent material in the second mode. In the second heat exchanger 434, the low-pressure refrigerant is desorbed from the adsorbent material in the first mode, and the high-pressure refrigerant is adsorbed to the adsorbent material in the second mode. In the first heat exchanger 433 and the second heat exchanger 434, the refrigerant is adsorbed to the adsorbent material so that the refrigerant is heated, or the refrigerant is desorbed from the adsorbent material so that the refrigerant is cooled. As a result, heat is exchanged between the heated or cooled refrigerant and the air in the first heat exchanger 433 and the second heat exchanger 434. The first fan 436 transports the air that has undergone superheat exchange in the first heat exchanger 433 to a predetermined location. The second fan 437 transports the air that has undergone superheat exchange in the second heat exchanger 434 to a predetermined location.

[0080] In this way, in the refrigeration cycle device 401, while the mixture of the refrigerant and the adsorbent material circulates in the refrigerant circuit 411, the refrigerant is heated or cooled, and the air after heat exchange with the refrigerant is transported to a specified place. The case where the refrigeration cycle device 401 is an air conditioning device is described. The first heat exchanger 433 is an indoor heat exchanger, and the second heat exchanger 434 is an outdoor heat exchanger. When the refrigeration cycle device 401 is in heating operation, by switching to the first mode, the refrigerant is adsorbed to the adsorbent material in the first heat exchanger 433, so that the refrigerant is heated. The air heated by heat exchange with the refrigerant is transported to a specified place by the first fan 436.

[0081] (3-5) Fifth Embodiment like Fig.10As shown, the refrigeration cycle device 501 of this embodiment has a refrigerant circuit 511 for circulating refrigerant, an adsorption circuit 512 for circulating adsorption material, a pair of first mixing parts 513, a pair of second mixing parts 514, a first fan 515 and a second fan 516. The refrigerant circuit 511 is equivalent to Figure 1 The adsorption circuit 512 is equivalent to the refrigerant circuit 11. Figure 1 The adsorption circuit 12. Fig.10 In FIG. 5 , the adsorption circuit 512 is depicted with a thick line.

[0082] The refrigerant circuit 511 includes a compressor 531, an expansion mechanism 532, a first heat exchanger 533, a second heat exchanger 534, and a first switching unit 535. The compressor 531 corresponds to Figure 1 The compressor 31. The expansion mechanism 532 is equivalent to Figure 1 Expansion mechanism 32.

[0083] The first switching unit 535 switches the flow direction of the refrigerant circulating in the refrigerant circuit 511. The first switching unit 535 is, for example, a four-way reversing valve. Fig.10 The solid line shows the first mode of flow direction with Fig.10 In the first mode, the discharge side of the compressor 531 is connected to the first heat exchanger 533, and the suction side of the compressor 531 is connected to the second heat exchanger 534. In the second mode, the discharge side of the compressor 531 is connected to the second heat exchanger 534, and the suction side of the compressor 531 is connected to the first heat exchanger 533.

[0084] The adsorption circuit 512 includes a booster 541, a reducer 542, a third heat exchanger 543, a fourth heat exchanger 544, and a second switching unit 545. The booster 541 corresponds to Figure 1 The booster 41. The reducer 542 is equivalent to Figure 1 The pressure reducer 42.

[0085] The second switching unit 545 switches the flow direction of the adsorption material circulating in the adsorption circuit 512. The second switching unit 545 is, for example, a four-way reversing valve. Fig.10 The solid line shows the first mode of flow direction with Fig.10In the first mode, the discharge side of the booster 541 is connected to the third heat exchanger 543, and the suction side of the booster 541 is connected to the fourth heat exchanger 544. In the second mode, the discharge side of the booster 541 is connected to the fourth heat exchanger 544, and the suction side of the booster 541 is connected to the third heat exchanger 543. The second switching unit 545 switches between the first mode and the second mode in conjunction with the first switching unit 535.

[0086] The first mixing section 513 and the second mixing section 514 mix the refrigerant flowing in the refrigerant circuit 511 and the adsorbent flowing in the adsorption circuit 512. A pair of first mixing sections 513 are provided at the upstream side and the downstream side of the first heat exchanger 533 and the third heat exchanger 543. A pair of second mixing sections 514 are provided at the upstream side and the downstream side of the second heat exchanger 534 and the fourth heat exchanger 544.

[0087] The first mixing section 513 and the second mixing section 514, for example, have a permeable component through which the refrigerant can pass but the adsorbent material cannot pass. The permeable component is, for example, a gas permeable membrane. In this case, the interior of the first mixing section 513 and the second mixing section 514 is divided by the permeable component into a space that is a part of the refrigerant circuit 511 and a space that is a part of the adsorption circuit 512. In the first mixing section 513 and the second mixing section 514, the refrigerant flowing in the refrigerant circuit 511 passes through the permeable component and contacts the adsorbent material flowing in the adsorption circuit 512. On the other hand, in the first mixing section 513 and the second mixing section 514, the adsorbent material flowing in the adsorption circuit 512 cannot pass through the permeable component. As a result, in the first mixing section 513 and the second mixing section 514, the adsorbent material adsorbs and desorbs the refrigerant that has passed through the permeable component.

[0088] In the first mixing section 513, the high-pressure refrigerant is adsorbed to the adsorbent material in the first mode, and the low-pressure refrigerant is desorbed from the adsorbent material in the second mode. In the second mixing section 514, the low-pressure refrigerant is desorbed from the adsorbent material in the first mode, and the high-pressure refrigerant is adsorbed to the adsorbent material in the second mode. In the first mixing section 513 and the second mixing section 514, the refrigerant is adsorbed to the adsorbent material so that the refrigerant and the adsorbent material are heated, or the refrigerant is desorbed from the adsorbent material so that the refrigerant and the adsorbent material are cooled. As a result, heat exchange is performed between the heated or cooled refrigerant and the adsorbent material and the air in the first heat exchanger 533, the second heat exchanger 534, the third heat exchanger 543, and the fourth heat exchanger 544.

[0089] In the first mode, the first heat exchanger 533 performs heat exchange between the heated refrigerant and the air, and the third heat exchanger 543 performs heat exchange between the heated adsorbent and the air. In the first mode, the second heat exchanger 534 performs heat exchange between the cooled refrigerant and the air, and the fourth heat exchanger 544 performs heat exchange between the cooled adsorbent and the air.

[0090] In the second mode, the first heat exchanger 533 performs heat exchange between the cooled refrigerant and the air, and the third heat exchanger 543 performs heat exchange between the cooled adsorbent and the air. In the second mode, the second heat exchanger 534 performs heat exchange between the heated refrigerant and the air, and the fourth heat exchanger 544 performs heat exchange between the heated adsorbent and the air.

[0091] The first fan 515 sends the air that has undergone heat exchange in the first heat exchanger 533 and the third heat exchanger 543 to a predetermined location. The second fan 516 sends the air that has undergone heat exchange in the second heat exchanger 534 and the fourth heat exchanger 544 to a predetermined location.

[0092] The pair of first mixing units 513, the first fan 515, the first heat exchanger 533, and the third heat exchanger 543 are equivalent to Figure 1 The adsorption part 21 is equivalent to Figure 1 The pair of second mixing units 514, second fans 516, second heat exchangers 534 and fourth heat exchangers 544 in the first mode are equivalent to Figure 1 The desorption section 22 is equivalent to Figure 1 The adsorption portion 21.

[0093] In this way, in the refrigeration cycle device 501, in the process of the refrigerant circulating in the refrigerant circuit 511 and the adsorbent material circulating in the adsorption circuit 512, the refrigerant and the adsorbent material are heated or cooled, and the air after heat exchange with the refrigerant and the adsorbent material is transported to a specified place. The case where the refrigeration cycle device 501 is an air conditioning device is described. The first heat exchanger 533 and the third heat exchanger 543 are indoor heat exchangers, and the second heat exchanger 534 and the fourth heat exchanger 544 are outdoor heat exchangers. When the refrigeration cycle device 501 is in heating operation, by switching to the first mode, the refrigerant is adsorbed to the adsorbent material in the first mixing section 513, so that the refrigerant and the adsorbent material are heated. The air heated by heat exchange with the refrigerant and the adsorbent material is transported to a specified place by the first fan 515.

[0094] (4) Features Compared with the previous refrigeration cycle device having a vapor compression refrigeration cycle but not having an adsorbent material, the operating pressure of the refrigeration cycle device 1 is smaller. For example, when the refrigerant is carbon dioxide, the operating pressure of the previous refrigeration cycle device is about 10MPa, and the operating pressure of the refrigeration cycle device 1 is about 1.5MPa. The operating pressure is the pressure of the compressed refrigerant in the refrigeration cycle. The higher the operating pressure, the more mechanical workload of the compressor, and the higher the pressure resistance (design pressure) required by the components constituting the refrigerant circuit, such as the shell of the compressor. Therefore, the higher the operating pressure, the cost of electricity used to drive the compressor and the cost spent on the components constituting the system tend to be higher. Therefore, the refrigeration cycle device 1 can operate at an operating pressure lower than the operating pressure of the previous refrigeration cycle device, thereby reducing the manufacturing cost and the operating cost. In addition, the refrigeration cycle device 1 reduces the design pressure, so that the components such as the shell of the compressor can be made compact and the reliability of the system can be improved.

[0095] Furthermore, when the refrigeration cycle device 1 is an air conditioning device, the refrigeration cycle device 1 can increase the refrigeration and heating capacity by utilizing the adsorption heat and desorption heat of the refrigerant for refrigeration and heating. Therefore, the refrigeration cycle device 1 can improve the efficiency of the refrigeration cycle and reduce the operating cost compared with the conventional refrigeration cycle devices by controlling the adsorption heat and desorption heat of the refrigerant.

[0096] (5) Modification (5-1) Modification A In the refrigeration cycle device 401 of the fourth embodiment, the refrigerant circuit 411 has the first separator 451. However, the refrigerant circuit 411 may not have the first separator 451. In this case, Fig.11 As shown in FIG. 4 , the refrigerant circuit 411 includes a compressor 431 and does not include a booster 441. Similar to the compressor 231 of the second modification, the compressor 431 of this modification includes Figure 1 The functions of both the compressor 31 and the booster 41 are realized.

[0097] (5-2) Modification B The adsorbent used in the refrigeration cycle apparatuses 1, 101, 201, 301, 401, and 501 is a metal organic structure. However, a material other than a metal organic structure may be used as the adsorbent.

[0098] As mentioned above, although embodiment of this disclosure is described, it should be understood that various changes in form and details can be made without departing from the spirit and scope of this disclosure described in the claims. Explanation of symbols

[0099] 1. 101, 201, 301, 401, 501 refrigeration cycle devices; 11, 111, 211, 311, 411, 511 refrigerant circuit (first unit); 12, 512 adsorption circuit (second unit); 513, 514 mixer; 31, 131, 231, 331, 431, 531 compressors; 32, 132, 232, 332, 432, 532 expansion mechanism; 133 first adsorber; 134 second adsorber; 135 switching unit; 41, 341, 441, 541 boosters; 42, 442, 542 pressure reducers; 351, 451, 452 separators. Prior art literature Patent Literature

[0100] Patent Document 1: International Publication No. 2009 / 145278

Claims

1. A refrigeration cycle device, characterized in that: include: a first unit, the first unit constituting a refrigeration cycle for circulating a refrigerant; as well as an adsorbent material, the adsorbent material adsorbing and desorbing the refrigerant circulating in the first unit, The adsorbent material adsorbs and desorbs the refrigerant by changes in pressure of the refrigerant circulating in the first unit.

2. A refrigeration cycle device (1, 101, 201, 301, 401, 501), characterized in that: include: A first unit (11, 111, 211, 311, 411, 511) having a compressor (31, 131, 231, 331, 431, 531) for compressing a refrigerant and constituting a vapor compression refrigeration cycle for circulating the refrigerant; as well as an adsorbent material, the adsorbent material adsorbing and desorbing the refrigerant circulating in the first unit, The adsorbent material adsorbs and desorbs the refrigerant by changes in pressure of the refrigerant circulating in the first unit.

3. The refrigeration cycle device according to claim 2, characterized in that: The first unit also has: an expansion mechanism (32, 132, 232, 332, 432, 532) for decompressing the refrigerant; a high-pressure region through which flows the refrigerant after being compressed by the compressor and before being decompressed by the expansion mechanism; as well as a low-pressure region in which the refrigerant flows after being decompressed by the expansion mechanism and before being compressed by the compressor, The adsorbent material adsorbs the refrigerant in the high-pressure region and desorbs the refrigerant in the low-pressure region.

4. The refrigeration cycle device according to claim 3, characterized in that: Also includes: a first adsorber (133) having the adsorbent material; a second adsorber (134) having the adsorbent material; as well as a switching unit (135) for alternately switching between the first mode and the second mode, In the first mode, the switching unit introduces the refrigerant in the high-pressure region into the first adsorber so that the refrigerant is adsorbed on the adsorption material of the first adsorber, and introduces the refrigerant in the low-pressure region into the second adsorber so that the refrigerant is desorbed from the adsorption material of the second adsorber. In the second mode, the switching unit introduces the refrigerant in the low-pressure region into the first adsorber so that the refrigerant is desorbed from the adsorbent material of the first adsorber, and introduces the refrigerant in the high-pressure region into the second adsorber so that the refrigerant is adsorbed on the adsorbent material of the second adsorber.

5. The refrigeration cycle device according to claim 3, characterized in that: The adsorbent material circulates within the first unit together with the refrigerant.

6. The refrigeration cycle device according to claim 5, characterized in that: The refrigeration cycle device further includes a separator (351, 451, 452) for separating the refrigerant and the adsorbent material circulating in the first unit. After being separated from the refrigerant by the separator, the adsorbent merges with the refrigerant compressed by the compressor or the refrigerant decompressed by the expansion mechanism.

7. The refrigeration cycle device according to claim 6, characterized in that: The separator separates the refrigerant in the low-pressure region from the adsorbent material. The refrigeration cycle device further includes a booster (41, 341, 441) for boosting the pressure of the adsorption material separated from the refrigerant by the separator.

8. The refrigeration cycle device according to claim 6 or 7, characterized in that: The separator separates the refrigerant in the high pressure region from the adsorption material. The refrigeration cycle device further includes a decompressor (42, 442) that decompresses the adsorption material separated from the refrigerant by the separator.

9. The refrigeration cycle device according to any one of claims 6 to 8, characterized in that: The separator separates the refrigerant from the adsorption material by centrifugal separation.

10. The refrigeration cycle device according to claim 3, characterized in that: Also includes: a second unit (12, 512), the second unit having a pressure increaser (541) for increasing the pressure of the adsorbent material and a pressure reducer (542) for reducing the pressure of the adsorbent material, and constituting an adsorption refrigeration cycle for circulating the adsorbent material; and a mixer (513, 514) for mixing the refrigerant flowing in the first unit with the adsorbent flowing in the second unit, The adsorbent material adsorbs and desorbs the refrigerant in the mixer.

11. The refrigeration cycle device according to claim 10, characterized in that: The mixer has a permeable member through which the refrigerant can pass but through which the adsorbent cannot pass. The adsorbent material adsorbs and desorbs the refrigerant that has passed through the permeable member in the mixer.

12. The refrigeration cycle device according to any one of claims 1 to 11, characterized in that: The adsorption material includes a metal organic structure, and the metal organic structure includes metal ions and organic ligands.

13. The refrigeration cycle device according to any one of claims 1 to 12, characterized in that: The refrigerant is selected from the group consisting of carbon dioxide, ammonia and propane.

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