JP4541289B2 - Hybrid heat pump system - Google Patents

Description

  The present invention relates to a heat pump system. Specifically, the present invention relates to a hybrid heat pump system that uses both a compression heat pump and an absorption heat pump.

  2. Description of the Related Art Conventionally, systems that perform air conditioning and hot water supply using a heat pump are known. Although various types of heat pumps are used, a compression heat pump is typically used.

  The compression heat pump includes a compressor that compresses the working fluid, a cooler that cools the compressed working fluid, an expander that expands the cooled working fluid, and a heater that heats the expanded working fluid. Yes. The working fluid is compressed with a compressor, cooled with a cooler, expanded with an expander, and heated with a heater to repeat the cycle.

  By using the above compression heat pump, for example, heat can be exchanged between indoor air and working fluid in a heater, and heat can be exchanged between outdoor air and working fluid in a cooler. In this case, the working fluid expanded by the expander has a lower temperature than the indoor air, and the working fluid is heated by heat exchange with the indoor air. The working fluid compressed by the compressor has a higher temperature than outdoor air, and the working fluid is cooled by heat exchange with the outdoor air.

  Also, unlike the above, the room can be heated by exchanging heat between the indoor air and the working fluid in the cooler and exchanging heat between the outdoor air and the working fluid in the heater. In this case, the working fluid expanded by the expander has a lower temperature than the outdoor air, and the working fluid is heated by heat exchange with the outdoor air. The working fluid compressed by the compressor has a higher temperature than outdoor air, and the working fluid is cooled by heat exchange with the outdoor air.

  The above-described compression heat pump uses a suitable working fluid, the working fluid condenses in the cooler to release condensation heat, and the working fluid evaporates in the heater to absorb the evaporation heat. By doing so, it becomes possible to realize heat transfer using the latent heat of the working fluid, and air conditioning with a large temperature difference from the outdoor air can be realized.

  The compression heat pump described above can achieve a high COP (Coefficient of Performance). However, in order to achieve air conditioning with a larger temperature difference from outdoor air, it is necessary to compress the working fluid to a higher pressure by the compressor. When the working fluid is compressed to a high pressure, the energy in the compressor increases and the COP of the compression heat pump decreases. In addition, a compressor that can withstand high pressure is large and expensive, and is not preferable for use at home or the like.

  In order to perform high-temperature heating and low-temperature cooling without reducing the COP of the compression heat pump, a technology that uses a compression heat pump and an absorption heat pump in combination has been developed.

  The absorption heat pump heats a solution diluted with a solvent to evaporate the solvent and separate it into a vaporized solvent and a concentrated solution, a condenser that condenses the separated vaporized solvent, and evaporates the condensed liquefied solvent. And an absorber for diluting the solution by absorbing the evaporated vaporized solvent into the concentrated solution. The solvent evaporates in the evaporator, is absorbed in the concentrated solution by the absorber, is evaporated and separated from the solution in the regenerator, and is condensed in the condenser. The solution is diluted by absorbing the solvent in the absorber and evaporating and concentrating the solvent in the regenerator.

  In the evaporator of the absorption heat pump, the heat of evaporation is absorbed when the liquefied solvent evaporates to become a vaporized solvent. For this reason, the working fluid can be cooled by circulating the working fluid such as water in the evaporator. When the cooled working fluid is used, it can be cooled by the cooling device.

  In the absorber of the absorption heat pump, the absorbed heat is released when the concentrated solution absorbs the vaporized solvent. For this reason, a working fluid can be heated by circulating working fluids, such as water, to an absorber. When the heated working fluid is used, it can be heated by the heating device.

  In the condenser of the absorption heat pump, condensation heat is released when the vaporized solvent condenses into a liquefied solvent. For this reason, the working fluid can be heated by circulating the working fluid such as water in the condenser. When the heated working fluid is used, it can be heated by the heating device.

  By using the cooling of the working fluid in the evaporator in the absorption heat pump described above and the heating of the working fluid in the condenser and absorber as a heat source for the cooler and the heater in the compressor heat pump, A system using an absorption heat pump can be realized.

  In the absorption heat pump, the liquefied solvent is evaporated at a low temperature in an evaporator, and the vaporized solvent is absorbed by the solution in the absorber to obtain a high-temperature solution. Therefore, by heating and evaporating the liquefied solvent with a compression heat pump, absorbing the vaporized solvent into the solution, and using the solution at a high temperature for heating and hot water supply, without applying a large load to the compression heat pump, Heating with a large temperature difference from the outside can be realized. In addition, by cooling the solution that has absorbed the vaporized solvent by the compression heat pump and cooling the working fluid using evaporation of the liquefied solvent, there is a large temperature difference from the outside without imposing a heavy load on the compression heat pump. Cooling can be realized.

A hybrid heat pump system using a compression heat pump and an absorption heat pump in combination as described above is described in Patent Document 1, for example. According to such a hybrid heat pump system, the load applied to the compressor can be reduced, high COP can be realized, and air conditioning with a large temperature difference from outdoor air can be realized.
JP-A-6-323686

  As in the technique of Patent Document 1, generally, in an absorption heat pump, regeneration, condensation, evaporation, and absorption of a solvent proceed simultaneously as a series of cycles. Accordingly, a general absorption heat pump includes a regenerator, a condenser, an evaporator, and an absorber as separate devices. In general, regenerators, condensers, evaporators, and absorbers use a container whose pressure is reduced to regenerate the solvent within the container in order to make the temperature range of the working fluid suitable for air conditioning and hot water supply. Condensation, evaporation, absorption.

  Such a configuration is an indispensable configuration when the above-described series of cycles proceeds simultaneously. However, a system having all of these configurations is large and is not suitable for use in homes or small stores.

In this regard, in the technique of Patent Document 1, the regenerator and the condenser are formed in the same decompression container so that the vaporized solvent moves from the regenerator to the condenser in the container, and the evaporator and the absorber are the same. As a configuration in which the vaporized solvent is formed in the decompression vessel and moves from the evaporator to the absorber in the vessel, the components of the absorption heat pump are made common to simplify the device configuration.
However, in the technique of Patent Document 1, a tank for storing a solution, a pipe for a solution that connects the tank and the regenerator, a pipe for a solution that connects the tank and the absorber, a tank that stores a liquefied solvent, and the tank and the condensation A pipe for the liquefied solvent that communicates the vessel and a pipe for the liquefied solvent that communicates the tank and the evaporator are required, and there is still room for improvement with regard to simplification of the apparatus configuration. There is a need for a compact system that can be realized with a simpler configuration.

  The present invention solves the above problems. The present invention provides a simple and compact system by sharing some components of an absorption heat pump in a system using both a compression heat pump and an absorption heat pump.

The present invention is embodied as a hybrid heat pump system. The hybrid heat pump system of the present invention includes a solution tank for storing a solution therein, a solvent tank for storing a liquefied solvent therein, an upper part of the solution tank and an upper part of the solvent tank, and a vaporized solvent flow through which the vaporized solvent passes. Heat exchange between the path, the solution stored in the solution tank and the heat medium, evaporates the solvent from the solution, and separates the solution into the vaporized solvent inside the solution tank, and flows into the solvent tank Heat exchange between the vaporized solvent and the heat medium, heat exchange between the heat exchanger for condensation that condenses the vaporized solvent inside the solvent tank to form a liquefied solvent, and the liquefied solvent stored in the solvent tank and the heat medium, Evaporation of the liquefied solvent and heat exchange between the evaporation heat exchanger that generates the vaporized solvent inside the solvent tank and the solution stored in the solution tank and the heat medium absorb the vaporized solvent into the solution inside the solution tank. Heat exchanger for absorption and compression means for compressing heat medium And expansion means for expanding the heat medium, and atmospheric heat exchanger for the heat medium to the air heat exchanger, and other compression means for compressing the heat medium, and the other expansion means for expanding the heat medium, the heat medium chamber An air heat exchanger that exchanges heat with air is provided. The hybrid heat pump system also includes a first circulation path for a heat medium that returns to the compression means through the compression means, the regeneration heat exchanger, the expansion means, and the condensation heat exchanger in order, the compression means, and the evaporation heat exchanger. The second circulation path of the heat medium returning to the compression means via the expansion means and the atmospheric heat exchanger in this order, and the flow path of the heat medium are switched to either the first circulation path or the second circulation path , The first heating circuit of the heat medium returning to the other compression means through the compression means, the air heat exchanger, the other expansion means, and the regeneration heat exchanger in order, and the other compression means, the air heat exchanger, the expansion And a switching means for switching to any one of the second heating circulation path of the heat medium returning to the other compression means via the atmospheric heat exchanger in order . The hybrid heat pump system can operate in either a regeneration operation in which the heat medium is circulated in the first circulation path or an absorption operation in which the heat medium is circulated in the second circulation path, and the heat medium is first heated during the absorption operation. Both the first heating operation for circulating in the circulation path and the second heating operation for circulating the heat medium in the second circulation path are possible .

  The regeneration operation of the above system will be described. In the regeneration operation, the heat medium that has been compressed by the compression means and has a high temperature is caused to flow into the regeneration heat exchanger, and heat exchange is performed with the solution in the solution tank. The solution is heated and the heat medium is cooled by heat exchange in the regeneration heat exchanger. The solvent evaporates from the heated solution, and a concentrated solution and a vaporized solvent are generated inside the solution tank. The cooled heat medium is expanded by the expansion means, becomes a low temperature, and flows into the condensation heat exchanger. The vaporized solvent generated inside the solution tank flows into the solvent layer via the vaporized solvent flow path. The vaporized solvent that has flowed into the solvent layer exchanges heat with the heat medium in the heat exchanger for condensation. By the heat exchange in the heat exchanger for condensation, the heat medium is heated, and the vaporized solvent is cooled and condensed. The heat medium heated by the heat exchanger for condensation returns to the compression means and is compressed again. The liquefied solvent condensed from the vaporized solvent by the heat exchanger for condensation is stored inside the solvent tank. The concentrated solution inside the solution tank is mixed with the solution stored in the solution tank. As a result, the solution inside the solution tank is concentrated, and the liquefied solvent is stored inside the solvent layer.

The absorption operation of the above system will be described. In the absorption operation, the heat medium which has been compressed by the compression means and has a high temperature is caused to flow into the evaporating heat exchanger to exchange heat with the liquefied solvent inside the solvent tank. By the heat exchange in the evaporation heat exchanger, the liquefied solvent is heated and the heat medium is cooled. The heated liquefied solvent evaporates to become a vaporized solvent, and flows into the solution tank via the vaporized solvent flow path. The cooled heat medium is expanded by the expansion means, becomes a low temperature, and flows into the atmospheric heat exchanger. The heat medium is heated by exchanging heat with the atmosphere using an atmospheric heat exchanger. The heated heat medium returns to the compression means and is compressed again. The vaporized solvent flowing into the solution tank is absorbed by the solution in the solution tank and dilutes the solution. The solution heated to high temperature by absorbing heat when absorbing the vaporized solvent is cooled by exchanging heat with a heat medium in an absorption heat exchanger and mixed with the solution stored in the solution tank. As a result, the solution inside the solution tank is diluted, and the liquefied solvent inside the solvent layer decreases.
In this absorption operation, the heat medium heated by the absorption heat exchanger can be used as a high-temperature heat source used for heating or hot water supply.

  The above system can switch between regeneration operation and absorption operation as necessary. For example, the regeneration operation is performed during a period in which no hot water supply or heating is performed. As a result, the solution in the solution tank is concentrated, and the liquefied solvent is stored in the solvent tank. Then, when performing air conditioning or heating, absorption operation is performed. Thereby, heating or hot water supply can be performed using the heat medium heated by the absorption heat exchanger as a high-temperature heat source. During the absorption operation, the liquefied solvent in the solvent tank decreases and the solvent in the solution tank is diluted.

  In the above system, the regeneration and condensation of the solvent proceeds in the regeneration operation without simultaneously proceeding with a series of absorption heat pump cycles such as the regeneration, condensation, evaporation and absorption of the solvent, and the evaporation and absorption of the solvent in the absorption operation. To advance. Since the regeneration operation and the absorption operation are performed separately in this way, it is not necessary to proceed with the regeneration and absorption of the solvent at the same time, and the regenerator and the absorber can be formed in the same solution tank. Further, it is not necessary to simultaneously proceed with condensation and evaporation of the solvent, and the evaporator and the absorber can be formed inside the same solvent tank.

By adopting such a configuration, a tank for storing a conventionally required solution, a pipe for a solution that communicates the tank and the regenerator, a pipe for a solution that communicates the tank and the absorber, a liquefied solvent The storage tank, the piping for the liquefied solvent that communicates the tank and the condenser, the piping for the liquefied solvent that communicates the tank and the evaporator, and the like become unnecessary. As a result, the apparatus configuration of the absorption heat pump can be simplified, and the system can be downsized.
In the above system, the first heating operation and the second heating operation can be performed. Accordingly, the first heating operation is performed in which the liquefied solvent in the solvent tank is evaporated using the heat absorbed from the atmosphere by the atmospheric heat exchanger and the room is heated with a high COP by using the absorbed heat generated in the solution tank. In addition, after the solvent in the solvent tank has been used up, the room heating can be continued by the second heating operation.

  The above system can be used as a heat source for heating, for example. The system further includes a heating device that heats indoor air by heat exchange with the heat medium, and a third circulation path of the heat medium that returns to the heating device through the heating device and the absorption heat exchanger in order, and absorbs the heat. Heating by the heating device can be performed by circulating the heat medium also in the third circulation path during operation.

  According to said system, high temperature heating can be performed with a heating apparatus using the heat which generate | occur | produces with the heat exchanger for absorption in absorption operation. In this case, a higher COP can be realized as compared with the case where only the compression heat pump is used.

  Or said system can also be utilized as a heat source of hot water supply, for example. The above system is a fourth heat medium that returns to the hot water supply heat exchanger through the hot water supply heat exchanger that heats water by heat exchange with the heat medium, the hot water supply heat exchanger, and the absorption heat exchanger. Hot water supply using a hot water supply heat exchanger can be performed by further providing a circulation path and circulating the heat medium in the fourth circulation path during the absorption operation.

  According to said system, hot water supply can be performed using the heat | fever which generate | occur | produces with an absorber in absorption driving | operation. Also in this case, a higher COP can be realized as compared with the case where only the compression heat pump is used.

  Various compressors can be used as the compression means used in the regeneration operation. For example, a gas engine driven compressor may be used. By using a compressor driven by a gas engine, it is possible to perform a regeneration operation using gas that is cheaper than electric power, and the running cost of the system can be suppressed.

  Alternatively, the compression means used in the regeneration operation may be an electric motor drive type compressor. In this case, the running cost of the system can be suppressed by adopting a configuration in which the regeneration operation is performed using the relatively inexpensive nighttime power.

  According to the hybrid heat pump system of the present invention, a compression heat pump and an absorption heat pump are used together, and a part of the components of the absorption heat pump can be shared to realize a simple and compact system. .

The main features of the embodiments described below are listed first.
(Embodiment 1) A fifth circulation path that returns to the compression means via the compression means, the heating device, the expansion valve, and the atmospheric heat exchanger is further provided, and can be operated even in a heating operation in which the heat medium is circulated in the fifth circulation path. is there.

(First embodiment)
A system 1000 embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 shows the configuration of a system 1000 according to this embodiment. The system 1000 includes an absorption heat pump 1002, a first compression heat pump 1004, a second compression heat pump 1006, an air conditioner 1008, a floor heating device 1010, a hot water tank 1012, and an auxiliary heating device 1014. .

  The absorption heat pump 1002 uses a lithium salt solution such as a lithium bromide aqueous solution as a working fluid. The absorption heat pump 1002 includes a solution tank 1016 for storing a solution therein and a solvent tank 1018 for storing a solvent therein. Each of the solution tank 1016 and the solvent tank 1018 is a container whose internal pressure is reduced, and the top of the solution tank 1016 and the top of the solvent tank 1018 communicate with each other via a vaporized solvent flow path 1020. An open / close valve 1022 is provided in the vaporization solvent flow path 1020. The on-off valve 1022 can communicate with the controller 1300 and opens and closes the vaporized solvent flow path 1020 according to an instruction from the controller 1300.

  Inside the solution tank 1016, an absorption heat exchanger 1036 is provided. The bottom of the solution tank 1016 communicates with one end of the solution tube 1028 in the regeneration heat exchanger 1026 via the first solution channel 1024. The regeneration heat exchanger 1026 includes a solution tube 1028 and a refrigerant tube 1030, and performs heat exchange between the solution flowing inside the solution tube 1028 and the first heat medium flowing inside the refrigerant tube 1030. One end of the second solution channel 1032 is connected to the other end of the solution tube 1028. The other end of the second solution channel 1032 is opened above the absorption heat exchanger 1036 inside the solution tank 1016. The first solution channel 1024 is provided with a pump 1034. The pump 1034 can communicate with the controller 1300 and is driven by an instruction from the controller 1300. When the pump 1034 is driven, the solution sucked from the bottom of the solution tank 1016 flows into the solution tube 1028 of the regeneration heat exchanger 1026 via the first solution channel 1024, and the solution flowing out from the solution tube 1028 is It flows into the solution tank 1016 via the second solution flow path 1032 and is sprayed to the absorption heat exchanger 1036 from above. The absorption heat exchanger 1036 is a heat transfer tube through which a refrigerant such as water (hereinafter referred to as a second heat medium) flows, and is between the second heat medium flowing inside and the solution sprayed on the outer surface. Perform heat exchange at.

  Inside the solvent tank 1018, a condensation heat exchanger 1038 and an evaporation heat exchanger 1040 are provided. The condensation heat exchanger 1038 is arranged at an upper position inside the solvent tank 1018, and the evaporation heat exchanger 1040 is arranged below inside the solvent tank 1018.

  The first compression heat pump 1004 uses a compressive fluid (hereinafter referred to as a first heat medium) such as Freon or carbon dioxide as a working fluid. The first compression heat pump 1004 includes a compressor 1042, an atmospheric heat exchanger 1044, and an expansion valve 1046. A blower 1048 is attached to the atmospheric heat exchanger 1044. The blower 1048 can communicate with the controller 1300 and is driven by an instruction from the controller 1300. The first compression heat pump 1004 includes four-way valves 1050, 1052, 1054, 1056, 1058, and 1062 that can communicate with the controller 1300, and a three-way valve 1064. Each of the four-way valves 1050, 1052, 1054, 1056, 1058, 1062 includes four ports A, B, C, and D. In response to an instruction from the controller 1300, the ports A and B communicate with each other. In addition, the mode is switched between a state in which the port C and the port D are communicated, and a state in which the port A and the port D are communicated and the port B and the port C are communicated. The three-way valve 1064 includes three ports a, b, and c. In response to an instruction from the controller 1300, the port a and the port b are connected and the port c is not connected, and the port a and the port c are connected. The state is switched between the states that do not communicate with the port b.

  The compressor 1042 compresses the first heat medium using a gas engine (not shown) as a power source. The compressor 1042 can communicate with the controller 1300 and is driven by an instruction from the controller 1300. The outlet of the first heat medium in the compressor 1042 is connected to the port C of the four-way valve 1052 via the flow path 1066. The port B of the four-way valve 1052 is connected to the port D of the four-way valve 1054 via the flow path 1068. Port A of the four-way valve 1054 is connected to one end of the refrigerant pipe 1030 of the regeneration heat exchanger 1026 via the flow path 1070. The other end of the refrigerant pipe 1030 is connected to the port C of the four-way valve 1058 via the flow path 1072. The port B of the four-way valve 1058 is connected to the port C of the four-way valve 1056 via the flow path 1074. The port D of the four-way valve 1056 is connected to one end of the atmospheric heat exchanger 1044 via the flow path 1076.

  The atmospheric heat exchanger 1044 is a heat transfer tube in which the first heat medium flows, and performs heat exchange between the first heat medium flowing in the interior and the atmosphere blown to the outer surface by the blower 1048. The other end of the atmospheric heat exchanger 1044 is connected to one inlet / outlet of the expansion valve 1046 via a flow path 1078. The expansion valve 1046 expands the compressed first heat medium. The other inlet / outlet of the expansion valve 1046 is connected to the B port of the four-way valve 1056 via the flow path 1080.

  The port A of the four-way valve 1056 is connected to the port D of the four-way valve 1062 via the flow path 1082. The port A of the four-way valve 1062 is connected to the port a of the three-way valve 1064 via the flow path 1084. The port b of the three-way valve 1064 is connected to one end of the heat exchanger for condensation 1038 via the flow path 1086. The heat exchanger for condensation 1038 is a heat transfer tube in which the first heat medium flows, and performs heat exchange between the first heat medium flowing in the interior and the vaporized solvent in contact with the outer surface. The other end of the heat exchanger for condensation 1038 is connected to the flow path coupling unit 1060 via the flow path 1088. The port c of the three-way valve 1064 is connected to the flow path coupling unit 1060 via the flow path 1090. The flow path coupling unit 1060 is connected to the port A of the four-way valve 1050 via the flow path 1092. The port B of the four-way valve 1050 is connected to the port D of the four-way valve 1052 via the flow path 1094. Port A of the four-way valve 1052 is connected to the inlet of the compressor 1042 via the flow path 1096.

  Similar to the first compression heat pump 1004, the second compression heat pump 1006 uses the first heat medium as a working fluid. The second compression heat pump 1006 includes a compressor 1100 and an expansion valve 1102. The second compression heat pump 1006 includes four-way valves 1104 and three-way valves 1106 and 1108 that can communicate with the controller 1300, respectively. The four-way valve 1104 includes four ports A, B, C, and D. In response to an instruction from the controller 1300, the port A and the port B communicate with each other, and the port C and the port D communicate with each other. The mode is switched between a state where the port A and the port D are communicated and the port B and the port C are communicated. Each of the three-way valves 1106 and 1108 includes three ports a, b, and c. In response to an instruction from the controller 1300, the port a and the port b are connected and the port c is not connected. The mode is switched between a state where the port c is communicated and the port b is not communicated.

  The compressor 1100 compresses the first heat medium using an electric motor (not shown) as a power source. The compressor 1100 can communicate with the controller 1300 and is driven by an instruction from the controller 1300. The outlet of the first heat medium in the compressor 1100 is connected to the port C of the four-way valve 1104 via the flow path 1110. The port D of the four-way valve 1104 is connected to the port a of the three-way valve 1106 via the flow path 1112. The port b of the three-way valve 1106 is connected to the port D of the four-way valve 1050 via the flow path 1114. The port C of the four-way valve 1050 is connected to one end of the evaporation heat exchanger 1040 via the flow path 1116. The evaporating heat exchanger 1040 is a heat transfer tube in which the first heat medium flows, and performs heat exchange between the first heat medium flowing in the interior and the solvent in contact with the outer surface. The other end of the evaporation heat exchanger 1040 is connected to the port C of the four-way valve 1062 via the flow path 1118. Port B of the four-way valve 1062 is connected to the flow path coupling portion 1122 via the flow path 1120.

  The port c of the three-way valve 1106 is connected to the port D of the four-way valve 1058 via the flow path 1124. The port A of the four-way valve 1058 is connected to the port C of the four-way valve 1054 via the flow path 1126. The port B of the four-way valve 1054 is connected to the flow path coupling portion 1122 via the flow path 1128. The flow path coupling portion 1122 is connected to the port a of the three-way valve 1108 via the flow path 1130.

  The port b of the three-way valve 1108 is connected to the flow path coupling portion 1134 via the flow path 1132. The port c of the three-way valve 1108 is connected to one inlet / outlet of the expansion valve 1102 via a flow path 1136. The expansion valve 1102 expands the compressed first heat medium. The other inlet / outlet of the expansion valve 1102 is connected to the flow path coupling portion 1134 via the flow path 1138. The flow path coupling unit 1134 is connected to one end of the air heat exchanger 1142 of the air conditioner 1008 via the flow path 1140.

  The air conditioner 1008 includes an air heat exchanger 1142 and a blower 1144. The blower 1144 can communicate with the controller 1300 and is driven in accordance with an instruction from the controller 1300. The air heat exchanger 1142 is a heat transfer tube in which the first heat medium flows, and performs heat exchange between the first heat medium flowing in the interior and air blown to the outer surface by the blower 1144. The air conditioner 1008 supplies the air cooled or heated by the air heat exchanger 1142 to the room to cool or heat the room. The other end of the air heat exchanger 1142 is connected to the port B of the four-way valve 1104 via the flow path 1146. Port A of the four-way valve 1104 is connected to the inlet of the compressor 1100 via a flow path 1148.

  One end of an absorption heat exchanger 1036 provided in the solution tank 1016 of the absorption heat pump 1002 is connected to one end of a refrigerant pipe 1204 in the heat exchanger 1202 via a flow path 1200. The heat exchanger 1202 includes a refrigerant pipe 1204 and a water pipe 1206, and performs heat exchange between the second heat medium that flows inside the refrigerant pipe 1204 and the water that flows inside the water pipe 1206. The other end of the refrigerant pipe 1204 is connected to the port a of the three-way valve 1210 via the flow path 1208. The three-way valve 1210 can communicate with the controller 1300. The three-way valve 1210 includes three ports a, b, and c. In response to an instruction from the controller 1300, the port a and the port b are connected and the port c is not connected, and the port a and the port c are connected. The state is switched between the states that do not communicate with the port b. The port b of the three-way valve 1210 is connected to one end of the refrigerant pipe 1214 of the floor heating device 1010 via the flow path 1212. The floor heating apparatus 1010 performs indoor floor heating using the heat of the refrigerant flowing inside the refrigerant pipe 1214. The other end of the refrigerant pipe 1214 is connected to the flow path coupling portion 1218 via the flow path 1216. The port c of the three-way valve 1210 is connected to the flow path coupling portion 1218 via the flow path 1220. The flow path coupling portion 1218 is connected to the other end of the absorption heat exchanger 1036 via the flow path 1222. A pump 1224 is provided in the flow path 1222. The pump 1224 can communicate with the controller 1300 and is driven in accordance with an instruction from the controller 1300.

  The hot water tank 1012 is a substantially cylindrical container that can store hot water therein. The bottom of the hot water tank 1012 is connected to one end of the water pipe 1206 of the heat exchanger 1202 via the flow path 1226. A pump 1228 is provided in the flow path 1226. The pump 1228 can communicate with the controller 1300 and is driven in accordance with an instruction from the controller 1300. The other end of the water pipe 1206 of the heat exchanger 1202 is connected to the top of the hot water tank 1012 via a flow path 1230. Tap water is supplied to the bottom of the hot water tank 1012 via a water pipe 1232. Hot water is supplied from the top of the hot water storage tank 1012 via the hot water supply passage 1234 and the auxiliary heating device 1014. A hot water supply passage 1234 extending from the top of the hot water storage tank 1012 is connected to a hot water supply pipe 1238 of the auxiliary heating device 1014. The auxiliary heating device 1014 heats the hot water flowing through the hot water supply pipe 1238 to the set temperature by the burner 1236. The burner 1236 can communicate with the controller 1300 and burns with a thermal power in accordance with an instruction from the controller 1300. The hot water heated to the set temperature by the auxiliary heating device 1014 is supplied from the hot water supply pipe 1238 to the hot water supply use location.

  The controller 1300 includes a CPU, a ROM, a RAM, an input port, an output port, and the like that are communicably connected to each other via a bus line. The CPU processes a control program stored in the ROM. Among the programs stored in the ROM, a program for controlling the system 1000 is included. The RAM temporarily stores various signals input to the controller 1300 and various data generated in the course of execution of processing by the CPU. Various sensor groups (not shown) such as a thermistor and a remote controller 1302 are connected to the input port. Information output from the various sensor groups and the remote controller 1302 is input to the input port. The CPU captures information input to the input port. The CPU executes various controls based on the input information. The output port includes an on-off valve 1022, compressors 1042, 1100, pumps 1034, 1224, 1226, blowers 1048, 1144, four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, three-way valves 1064, 1106, 1108. A burner 1236 and the like are connected. Various signals generated and output by the CPU are input to these components through an output port.

  The remote control 1302 can communicate with the controller 1300. The remote controller 1302 includes a plurality of operation switches, and the user of the system 1000 sets the type of operation of the system 1000, the temperature of the air conditioner, the hot water supply temperature, and the like in the remote controller 1302. The remote controller 1302 outputs the set type of operation of the system 1000, the temperature of the air conditioning, the hot water supply temperature, and the like to the controller 1300.

  Next, various processes executed by the controller 1300 will be described.

(1) Regeneration Operation When the regeneration operation is started, the controller 1300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, and the three-way valve 1064 as shown in FIG. Thus, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1068, the four-way valve 1054, the flow path 1070, the refrigerant pipe 1030 of the regeneration heat exchanger 1026, the flow path 1072, and the four-way. Valve 1058, channel 1074, four-way valve 1056, channel 1076, atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1082, four-way valve 1062, channel 1084, three-way The valve 1064, the flow path 1086, the heat exchanger for condensation 1038, the flow path 1088, the flow path coupling portion 1060, the flow path 1092, the four-way valve 1050, the flow path 1094, the four-way valve 1052, and the flow path 1096 are sequentially passed through the compressor. A circulation path back to 1042 is formed.

  The controller 1300 drives the compressor 1042. The controller 1300 drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the blower 1048.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the refrigerant pipe 1030 of the regeneration heat exchanger 1026. On the other hand, the solution in the solution tank 1016 is pumped out by the pump 1034 and flows into the solution tube 1028 of the regeneration heat exchanger 1026 via the first solution flow path 1024. In the heat exchanger for regeneration 1026, heat exchange is performed between the first heat medium flowing in the refrigerant tube 1030 and the solution flowing in the solution tube 1028, and the first heat medium is cooled and condensed, and the solution Is heated. The heated solution flows into the solution tank 1016 via the second solution channel 1032 and is separated into a vaporized solvent and a concentrated solution by flash evaporation. The vaporized solvent separated from the solution flows into the solvent tank 1018 having a vapor pressure lower than that in the solution tank 1016 through the vaporized solvent flow path 1020. The concentrated solution is dispersed in the solution tank 1016 and mixed with the solution below the solution tank 1016.

  In the regeneration heat exchanger 1026, the first heat medium in the refrigerant tube 1030 and the solution in the solution tube 1028 flow in directions opposite to each other. With such a configuration, a large amount of heat can be transferred between the first heat medium and the solution.

  The first heat medium cooled by the refrigerant pipe 1030 of the regeneration heat exchanger 1026 flows into the atmospheric heat exchanger 1044 and is further cooled by heat exchange with the atmosphere. The first heat medium cooled by the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the condensation heat exchanger 1038 of the solvent tank 1018.

  The vaporized solvent that has flowed from the solution tank 1016 into the solvent tank 1018 via the vaporized solvent flow path 1020 is formed on the surface of the condensation heat exchanger 1038 with a low-temperature first heat medium that flows inside the condensation heat exchanger 1038. Heat exchange between. The vaporized solvent is cooled and condensed, and condensation occurs on the surface of the heat exchanger for condensation 1038. The condensed liquefied solvent is dropped in the lower part of the solvent tank 1018 and stored in the solvent tank 1018. The first heat medium flowing inside the condensing heat exchanger 1038 is heated by the temperature difference from the vaporized solvent, and further heated by the condensation heat of the vaporized solvent generated on the surface of the condensing heat exchanger 1038 to evaporate. . The first heat medium evaporated in the heat exchanger for condensing 1038 returns to the compressor 1042.

  By the regeneration operation, the vaporized solvent is separated from the solution in the solution tank 1016, and the solution in the solution tank 1016 is concentrated. On the other hand, the amount of the liquefied solvent stored in the solvent tank 1018 increases. The difference between the latent heat of evaporation of the solvent generated by the regeneration heat exchanger 1026 and the latent heat of condensation of the solvent absorbed by the heat exchanger for condensation 1038 is released to the atmosphere by the atmospheric heat exchanger 1044 together with the energy given by the compressor 1042. .

  In the system 1000 of this embodiment, the solution is concentrated to about 60%. In such a case, the temperature of the first heat medium required for the evaporation heat exchanger 1040 is about 5 ° C., and the temperature of the first heat medium required for the regeneration heat exchanger 1026 is about 40 ° C. It is. This is a temperature range in which the first compression heat pump 1004 can be suitably operated without imposing an excessive load on the compressor 1042.

  In the system 1000 of this embodiment, the solvent is regenerated using a compressor 1042 driven by a gas engine. By using gas that is less expensive than electric power, the cost for regeneration can be reduced.

  Note that the compressor 1042 may be a compressor driven by an electric motor. In such a case, the solvent can be regenerated using midnight power with a low electricity bill by performing the regeneration operation described above at midnight. The running cost of the system can be reduced.

(2) Heating Operation When the heating operation is started, the controller 1300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 1116, the evaporation heat exchanger 1040, the flow path 1118, the four-way valve 1062, Channel 1082, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1074, four-way valve 1058, channel 1126, four-way valve 1054, flow A circulation path returning to the compressor 1042 is formed through the path 1068, the four-way valve 1052, and the flow path 1096 in this order. Further, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1146, the air heat exchanger 1142, the flow path 1140, the flow path coupling portion 1134, the flow path 1138, the expansion valve 1102, Channel 1136, three-way valve 1108, channel 1130, channel coupling portion 1122, channel 1128, four-way valve 1054, channel 1070, refrigerant pipe 1030 of regeneration heat exchanger 1026, channel 1072, four-way valve 1058, channel 1124, the three-way valve 1106, the flow path 1112, the four-way valve 1104, the flow path 1148, and the circulation path which returns to the compressor 1100 are formed in order.

  The controller 1300 drives the compressors 1042 and 1100. Further, the controller drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the fans 1048 and 1144.

  The controller 1300 switches the three-way valve 1210 and drives the pump 1224. As a result, the second heat medium flowing in the flow path 1222 becomes the heat exchanger for absorption 1036, the flow path 1200, the refrigerant pipe 1204 of the heat exchanger 1202, the flow path 1208, the three-way valve 1210, the flow path 1212, and the floor heating device. A circulation path returning to the flow path 1222 is formed through the refrigerant pipe 1214, the flow path 1216, and the flow path coupling portion 1218 in order, and the second heat medium circulates in the circulation path.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out of the compressor 1042 flows into the evaporation heat exchanger 1040 and exchanges heat with the liquefied solvent stored in the solvent tank 1018. By the heat exchange in the evaporating heat exchanger 1040, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044, and is heated and evaporated by heat exchange with the atmosphere. The first heat medium evaporated in the atmospheric heat exchanger 1044 returns to the compressor 1042.

  The vaporized solvent generated on the surface of the evaporation heat exchanger 1040 in the solvent tank 1018 flows into the solution tank 1016 having a vapor pressure lower than that in the solvent tank 1018 via the vaporized solvent flow path 1020.

  The solution in the solution tank 1016 is pumped from the bottom by the pump 1034 and flows into the solution tube 1028 of the regeneration heat exchanger 1026 via the first solution channel 1024. In the regeneration heat exchanger 1026, heat exchange is performed between the first heat medium flowing in the refrigerant tube 1030 and the solution flowing in the solution tube 1028. The first heat medium is heated by heat exchange, and the solution is cooled. The cooled solution flows into the solution tank 1016 via the second solution channel 1032 and is sprayed to the absorption heat exchanger 1036.

  The solution adhering to the surface of the absorption heat exchanger 1036 absorbs the vaporized solvent flowing from the solvent tank 1018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the second heat medium flowing inside the absorption heat exchanger 1036. The solution diluted by absorbing the vaporized solvent is stored in the bottom of the solution tank 1036.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the air heat exchanger 1142 of the air conditioner 1008 and exchanges heat with air blown to the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is heated to a high temperature and warms the room. By the heat exchange in the air heat exchanger 1142, the first heat medium is cooled and condensed. The first heat medium flowing out from the air heat exchanger 1142 flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the refrigerant pipe 1030 of the regeneration heat exchanger 1026. In the regeneration heat exchanger 1026, the first heat medium is heated and evaporated. The first heat medium evaporated in the regeneration heat exchanger 1026 returns to the compressor 1100.

  In the regeneration heat exchanger 1026, the first heat medium in the refrigerant tube 1030 and the solution in the solution tube 1028 flow in directions opposite to each other. With such a configuration, a large amount of heat can be transferred between the first heat medium and the solution.

  When the pump 1224 is driven, the second heat medium in the flow path 1222 flows into the absorption heat exchanger 1036. Due to the absorption heat of the solution generated on the surface of the absorption heat exchanger 1036, the second heat medium inside the absorption heat exchanger 1036 is heated to a high temperature. The second heat medium having reached a high temperature flows into the refrigerant pipe 1214 of the floor heating apparatus 1010 via the flow path 1200, the refrigerant pipe 1204 of the heat exchanger 1202, the flow path 1208, the three-way valve 1210, and the flow path 1212. . In the heating operation, since the pump 1228 is not driven, water does not flow inside the water pipe 1206 of the heat exchanger 1202. Therefore, heat exchange is not performed in the heat exchanger 1202, and the refrigerant pipe 1204 functions as a simple flow path. The second heat medium flowing into the refrigerant pipe 1214 of the floor heating device 1010 dissipates heat and warms the floor. The second heat medium that has radiated heat in floor heating device 1010 and has a low temperature returns to flow path 1222 via flow path 1216 and flow path coupling portion 1218.

  In the heating operation described above, the heat absorbed from the atmosphere by the atmospheric heat exchanger 1044 is used to evaporate the liquefied solvent in the solvent tank 1018, and the absorbed heat generated in the solution tank 1016 is absorbed by the air conditioner 1008 and the floor heating apparatus 1010. Use as a heat source. High temperature heating can be realized with a high COP.

(3) Hot-water supply operation When the hot-water supply operation is started, the controller 1300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, and 1062, as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 1116, the evaporation heat exchanger 1040, the flow path 1118, the four-way valve 1062, Channel 1082, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1074, four-way valve 1058, channel 1126, four-way valve 1054, flow A circulation path returning to the compressor 1042 is formed through the path 1068, the four-way valve 1052, and the flow path 1096 in this order.

  The controller 1300 drives the compressor 1042. Further, the controller drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the fans 1048 and 1144.

  The controller 1300 switches the three-way valve 1210. As a result, the second heat medium flowing in the flow path 1222 becomes the heat exchanger for absorption 1036, the flow path 1200, the refrigerant pipe 1204 in the heat exchanger 1202, the flow path 1208, the three-way valve 1210, the flow path 1220, the flow path. A circulation path returning to the flow path 1222 through the coupling portion 1218 is formed. The controller 1300 drives the pumps 1224 and 1228.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out of the compressor 1042 flows into the evaporation heat exchanger 1040 and exchanges heat with the liquefied solvent stored in the solvent tank 1018. By the heat exchange in the evaporating heat exchanger 1040, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044, and is heated and evaporated by heat exchange with the atmosphere. The first heat medium evaporated in the atmospheric heat exchanger 1044 returns to the compressor 1042.

The vaporized solvent generated on the surface of the evaporation heat exchanger 1040 in the solvent tank 1018 flows into the solution tank 1016 having a vapor pressure lower than that in the solvent tank 1018 through the vaporized solvent flow path 1020.
The solution in the solution tank 1016 is pumped from the bottom by the pump 1034 and passes through the first solution channel 1024, the solution tube 1028 of the regeneration heat exchanger 1026, and the second solution channel 1032. It spreads to the heat exchanger 1036 for absorption from the upper part. In the hot water supply operation, heat exchange in the regeneration heat exchanger 1026 is not performed.

  The solution adhering to the surface of the absorption heat exchanger 1036 absorbs the vaporized solvent flowing from the solvent tank 1018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the second heat medium flowing inside the absorption heat exchanger 1036. The solution diluted by absorbing the vaporized solvent is dropped onto the bottom of the solution tank 1036 and mixed with the solution in the solution tank 1036.

  When the pump 1224 is driven, the second heat medium in the flow path 1222 flows into the absorption heat exchanger 1036. In the absorption heat exchanger 1036, the second heat medium is heated to a high temperature. The second heat medium having reached a high temperature flows into the refrigerant pipe 1204 of the heat exchanger 1202 via the flow path 1200. In the heat exchanger 1202, heat exchange is performed between the second heat medium flowing in the refrigerant pipe 1204 and the water flowing in the water pipe 1206, the second heat medium is cooled, and the water is heated. The second heat medium cooled in the heat exchanger 1202 returns to the flow path 1222 via the flow path 1208, the three-way valve 1210, the flow path 1220, and the flow path coupling portion 1218.

  When the pump 1228 is driven, water drawn from the bottom of the hot water tank 1012 flows into the water pipe 1206 of the heat exchanger 1202 via the flow path 1226 and is heated by heat exchange with the second heat medium. The water heated in the heat exchanger 1202 flows into the top of the hot water storage tank 1012 via the flow path 1230.

  In the hot water supply operation of the system 1000 according to the present embodiment, in the heat exchanger 1202, the second heat medium in the refrigerant pipe 1204 and the water in the water pipe 1206 flow in directions facing each other. By setting it as such a structure, a big calorie | heat amount can be moved between a 2nd heat carrier and water.

  In the hot water supply operation described above, the solvent in the solvent tank 1018 is evaporated using heat absorbed from the atmosphere by the atmospheric heat exchanger 1044. The absorption heat of the solution in the solution tank 1016 is used for heating the water in the hot water storage tank 1012 through the second heat medium. In this way, hot water is stored in the upper part of the hot water tank 1012.

  The hot water stored in the upper part of the hot water storage tank 1012 is supplied to the hot water use location through the hot water supply passage 1234. When hot water is supplied to a hot water supply location, heating by the auxiliary heating device 1014 is performed as necessary. The hot water heated to the set temperature by the combustion of the burner 1236 of the auxiliary heating device 1014 can be supplied to the hot water supply use location.

(4) Cooling Operation When the cooling operation is started, the controller 1300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1064, 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 1092, the flow path coupling portion 1060, the flow path 1090, the three-way valve 1064, the flow path. 1084, four-way valve 1062, channel 1082, four-way valve 1056, channel 1076, atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1074, four-way valve 1058, channel 1072, a circulation path returning to the compressor 1042 is formed through the refrigerant pipe 1030 of the regeneration heat exchanger 1026, the flow path 1070, the four-way valve 1054, the flow path 1068, the four-way valve 1052, and the flow path 1096 in this order. Further, the first heat medium flowing out from the compressor 1100 includes a flow path 1110, a four-way valve 1104, a flow path 1112, a three-way valve 1106, a flow path 1114, a four-way valve 1050, a flow path 1116, an evaporation heat exchanger 1040, a flow path. 1118, four-way valve 1062, channel 1120, channel coupling unit 1122, channel 1130, three-way valve 1108, channel 1136, expansion valve 1102, channel 1138, channel coupling unit 1134, channel 1140, air conditioner 1008 A circulation path returning to the compressor 1100 is formed through the air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 in this order.

  The controller 1300 drives the compressor 1042 and the compressor 1100. Further, the controller drives the pump 1034 and opens the on-off valve 1022. Further, the controller 1300 drives the blower 1048 and the blower 1144.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out of the compressor 1100 flows into the evaporation heat exchanger 1040 and exchanges heat with the liquefied solvent stored in the solvent tank 1018. By the heat exchange in the evaporating heat exchanger 1040, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the air heat exchanger 1142 of the air conditioner 1008, and exchanges heat with air blown to the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is cooled to a low temperature, and the room is cooled. By heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated. The first heat medium flowing out from the air heat exchanger 1142 returns to the compressor 1100.

  The solution in the solution tank 1016 is pumped out by the pump 1034 and flows into the solution tube 1028 of the regeneration heat exchanger 1026 via the first solution flow path 1024. In the regeneration heat exchanger 1026, heat exchange is performed between the first heat medium flowing in the refrigerant tube 1030 and the solution flowing in the solution tube 1028, and the first heat medium is heated and evaporated, Is cooled. The cooled solution flows into the solution tank 1016 via the second solution channel 1032 and is sprayed to the absorption heat exchanger 1036.

  The solution adhering to the surface of the absorption heat exchanger 1036 absorbs the vaporized solvent flowing from the solvent tank 1018 via the vaporized solvent flow path 1020 and is diluted. Due to the heat of absorption generated at this time, the solution is heated to a high temperature. The diluted solution is dropped into the lower part of the solution tank 1036 and mixed with the solution in the solution tank 1036.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the atmospheric heat exchanger 1044, and is cooled and condensed by heat exchange with the atmosphere. The first heat medium condensed in the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the refrigerant pipe 1030 of the regeneration heat exchanger 1026 and is heated and evaporated by heat exchange with the solution flowing through the solution pipe 1028. The first heat medium evaporated in the regeneration heat exchanger 1026 returns to the compressor 1042.

  In the cooling operation, the liquefied solvent in the solvent tank 1018 is evaporated using the heat absorbed by the first heat medium by the cooling in the air conditioner 1008. Further, the absorption heat generated by the solution in the solution tank 1016 is released to the atmosphere in the atmospheric heat exchanger 1044.

(5) Cooling / hot-water supply operation The above-described (4) cooling operation can be performed in parallel with hot-water supply.
When the cooling / hot water supply operation is started, the controller 1300 switches the four-way valves 1050 and 1062 and the three-way valves 1106 and 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1112, the three-way valve 1106, the flow path 1114, the four-way valve 1050, the flow path 1116, the evaporation heat exchanger 1040, the flow. Channel 1118, four-way valve 1062, channel 1120, channel coupling unit 1122, channel 1130, three-way valve 1108, channel 1136, expansion valve 1102, channel 1138, channel coupling unit 1134, channel 1140, air conditioner 1008 A circulation path returning to the compressor 1100 is formed through the air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 in this order.

  The controller 1300 drives the compressor 1100. Further, the controller drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the blower 1144.

  The controller 1300 switches the three-way valve 1210. As a result, the second heat medium flowing in the flow path 1222 becomes the heat exchanger for absorption 1036, the flow path 1200, the refrigerant pipe 1204 in the heat exchanger 1202, the flow path 1208, the three-way valve 1210, the flow path 1220, the flow path. A circulation path returning to the flow path 1222 through the coupling portion 1218 is formed. The controller 1300 drives the pumps 1224 and 1228.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out of the compressor 1100 flows into the evaporation heat exchanger 1040 and exchanges heat with the liquefied solvent stored in the solvent tank 1018. By the heat exchange in the evaporating heat exchanger 1040, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the air heat exchanger 1142 and exchanges heat with air blown onto the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is cooled to a low temperature, and the room is cooled. By heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated. The first heat medium flowing out from the air heat exchanger 1142 returns to the compressor 1100.

  The solution in the solution tank 1016 is pumped out by the pump 1034, and sequentially passes through the first solution channel 1024, the solution tube 1028 of the regeneration heat exchanger 1026, and the second solution channel 1032 in order. It spreads to the heat exchanger 1036 for absorption from the upper part. In the cooling / hot water supply operation, heat exchange in the regeneration heat exchanger 1026 is not performed.

  The solution adhering to the surface of the absorption heat exchanger 1036 absorbs the vaporized solvent flowing from the solvent tank 1018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the second heat medium flowing inside the absorption heat exchanger 1036. The solution diluted by absorbing the vaporized solvent is dropped into the lower part of the solution tank 1016 and mixed with the solution in the solution tank 1016.

  When the pump 1224 is driven, the second heat medium in the flow path 1222 flows into the absorption heat exchanger 1036. In the absorption heat exchanger 1036, the second heat medium is heated to a high temperature. The second heat medium having reached a high temperature flows into the refrigerant pipe 1204 of the heat exchanger 1202 via the flow path 1200. In the heat exchanger 1202, heat exchange is performed between the second heat medium flowing in the refrigerant pipe 1204 and the water flowing in the water pipe 1206, the second heat medium is cooled, and the water is heated. The second heat medium cooled in the heat exchanger 1202 returns to the flow path 1222 via the flow path 1208, the three-way valve 1210, the flow path 1220, and the flow path coupling portion 1218.

  When the pump 1228 is driven, water drawn from the bottom of the hot water tank 1012 flows into the water pipe 1206 of the heat exchanger 1202 via the flow path 1226 and is heated by heat exchange with the second heat medium. The water heated in the heat exchanger 1202 flows into the top of the hot water storage tank 1012 via the flow path 1230.

  In the cooling / hot water supply operation of the system 1000 of the present embodiment, in the heat exchanger 1202, the second heat medium in the refrigerant pipe 1204 and the water in the water pipe 1206 flow in directions opposite to each other. By setting it as such a structure, a big calorie | heat amount can be moved between a 2nd heat carrier and water.

  In the cooling / hot water supply operation described above, the liquefied solvent in the solvent tank 1018 is evaporated using heat absorbed from the air by cooling in the air conditioner 1008. Absorption heat generated in the solution tank 1016 is used to heat water in the hot water storage tank 1012. Such operation is extremely efficient in using heat. Moreover, since the heat of absorption generated in the solution tank 1016 is used as a heat source, high-temperature hot water can be obtained.

(6) Heating operation (compression HP)
In the system 1000 of the present embodiment, even when the liquefied solvent in the solvent tank 1018 is used up and the solution in the solution tank 1016 cannot be diluted any more and the absorption heat pump 1002 cannot be used, Heating and cooling using the air conditioner 1008 can be performed using only the compression heat pump.

When the heating operation (compression HP) is started, the controller 1300 switches the four-way valves 1050, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1064, 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1146, the air heat exchanger 1142 of the air conditioner 1008, the flow path 1140, the flow path coupling portion 1134, the flow path 1132, Three-way valve 1108, channel 1130, channel coupling portion 1122, channel 1128, four-way valve 1054, channel 1126, four-way valve 1058, channel 1074, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, Atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1082, four-way valve 1062, channel 1084, three-way valve 1064, channel 1090, channel coupling unit 1060, channel 1092, four-way valve 1050, channel 1114, the three-way valve 1106, the flow path 1112, the four-way valve 1104, and the flow path 1148 are sequentially returned to the compressor 1100. Ring path is formed.
The controller 1300 drives the compressor 1100. The blower 1048 and the blower 1144 are driven.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the air heat exchanger 1142 and exchanges heat with the atmosphere blown to the surface of the air heat exchanger 1142 by the blower 1144. Due to the heat exchange in the air heat exchanger 1142, the first heat medium is cooled and condensed, and the air is heated to a high temperature. The air conditioner 1008 warms the room using high-temperature air. The first heat medium cooled in the air heat exchanger 1142 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044 and exchanges heat with the atmosphere blown to the surface of the atmospheric heat exchanger 1044 by the blower 1048. By the heat exchange in the atmospheric heat exchanger 1044, the first heat medium is heated and evaporated, and the atmosphere is cooled. The first heat medium heated by the atmospheric heat exchanger 1044 returns to the compressor 1100.

  In the heating operation (compression HP), air is heated by the air heat exchanger 1142 of the air conditioner 1008 using heat absorbed from the atmosphere by the atmospheric heat exchanger 1044. The room can be heated using the heated air.

  According to the system 1000 of the present embodiment, the heating operation can be continued even after the solvent in the solvent tank 1018 has been used up.

(7) Cooling operation (compression HP)
When the cooling operation (compression HP) is started, the controller 1300 switches the four-way valves 1050, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1064, 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1112, the three-way valve 1106, the flow path 1114, the four-way valve 1050, the flow path 1092, the flow path coupling portion 1060, and the flow path. 1090, three-way valve 1064, channel 1084, four-way valve 1062, channel 1082, four-way valve 1056, channel 1076, atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1074, four-way valve 1058, flow path 1126, four-way valve 1054, flow path 1128, flow path coupling part 1122, flow path 1130, three-way valve 1108, flow path 1132, flow path coupling part 1134, flow path 1140, air conditioner 1008 The air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 are sequentially returned to the compressor 1100. Road is formed.
The controller 1300 drives the compressor 1100. The blower 1048 and the blower 1144 are driven.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the atmospheric heat exchanger 1044 and exchanges heat with the atmosphere blown to the surface of the atmospheric heat exchanger 1044 by the blower 1048. By heat exchange in the atmospheric heat exchanger 1044, the first heat medium is cooled and condensed, and the atmosphere is heated. The first heat medium cooled in the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the air heat exchanger 1142 and exchanges heat with the air blown onto the surface of the air heat exchanger 1142 by the blower 1144. By the heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated, and the air is cooled. The air conditioner 1008 cools the room using the cooled air. The first heat medium heated by the air heat exchanger 1142 returns to the compressor 1100.

  In the cooling operation (compression HP), the heat absorbed by the air heat exchanger 1142 of the air conditioner 1008 is released to the atmosphere by the atmospheric heat exchanger 1044. The air cooled by the air heat exchanger 1142 can be used to cool the room.

  According to the system 1000 of the present embodiment, the cooling operation can be continued even after the solvent in the solvent tank 1018 has been used up.

  As described above, according to the system 1000 of this embodiment, the regeneration operation, the heating operation, the hot water supply can be performed by switching the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1064, 1106, 1108. Any one of operation, cooling operation, cooling / hot water supply operation, heating operation (compression HP), and cooling operation (compression HP) can be performed.

(Second embodiment)
The system 8000 of this embodiment will be described with reference to FIG. Constituent elements common to the system 1000 of the first embodiment are denoted by the same reference numerals and description thereof is omitted. The system 8000 includes an absorption heat pump 8002, a first compression heat pump 8004, a second compression heat pump 1006, an air conditioner 1008, a hot water tank 1012, and an auxiliary heating device 1014.

  The absorption heat pump 8002 uses a lithium salt solution such as an aqueous lithium bromide solution as a working fluid. The absorption heat pump 8002 includes a solution tank 8016 for storing a solution therein and a solvent tank 8018 for storing a solvent therein. Both the solution tank 8016 and the solvent tank 8018 are containers whose internal pressure is reduced, and the top of the solution tank 8016 and the top of the solvent tank 8018 communicate with each other via a vaporized solvent flow path 1020.

  Inside the solution tank 8016, a regeneration heat exchanger 8026 and an absorption heat exchanger 8036 are provided. The regeneration heat exchanger 8026 is a heat transfer tube through which the first heat medium flows, and performs heat exchange between the first heat medium flowing inside and the solution sprayed on the outer surface. The absorption heat exchanger 8036 is a heat transfer tube through which water flows, and performs heat exchange between the water flowing inside and the solution sprayed on the outer surface. The bottom of the solution tank 8016 is connected to the port a of the three-way valve 8032 via the first solution channel 8024. The three-way valve 8032 includes three ports a, b, and c, and can communicate with the controller 8300. The three-way valve 8032 switches between a state where the port a and the port b are communicated and the port c is not communicated, and a state where the port a and the port c are communicated and the port b is not communicated according to an instruction from the controller 8300. The The first solution channel 8024 is provided with a pump 1034.

  One end of the second solution channel 8030 is connected to the port b of the three-way valve 8032. The other end of the second solution channel 8030 is opened above the absorption heat exchanger 8036 inside the solution tank 8016. One end of a third solution channel 8028 is connected to the port c of the three-way valve 8032. The other end of the third solution channel 8028 is opened above the regeneration heat exchanger 8026 inside the solution tank 8016.

  An evaporation / condensation heat exchanger 8038 is provided inside the solvent tank 8018. The evaporating / condensing heat exchanger 8038 is a heat transfer tube through which the first heat medium flows, and exchanges heat between the first heat medium flowing inside and the solvent or vaporized solvent in contact with the outer surface. Do.

  The port A of the four-way valve 1054 is connected to one end of a regeneration heat exchanger 8026 via a flow path 8070. The other end of the regeneration heat exchanger 8026 is connected to a port C of the four-way valve 1058 via a flow path 8072.

  The port C of the four-way valve 1062 is connected to one end of an evaporation / condensation heat exchanger 8038 via a flow path 8118. The other end of the evaporation / condensation heat exchanger 8038 is connected to the port A of the four-way valve 1050 via a flow path 8088. Port A of the four-way valve 1062 is connected to a port C of the four-way valve 1050 via a flow path 8084.

  Tap water is supplied to the bottom of the hot water tank 1012 via a water pipe 1232. A hot water supply path 8234 extending from the top of the hot water tank 1012 is connected to the hot water supply pipe 1238 of the auxiliary heating device 1014.

  The bottom of the hot water tank 1012 is connected to one end of an absorption heat exchanger 8036 via a flow path 8226 branched from the water pipe 1232. A pump 1228 is provided in the flow path 8226. The other end of the absorption heat exchanger 8036 is connected to the top of the hot water tank 1012 via a flow path 8230 that joins the hot water supply path 8234.

  The system 8000 of this embodiment can perform the same operation as the system 1000 of the first embodiment. Hereinafter, various processes executed by the controller 8300 will be described.

(1) Regeneration Operation When the regeneration operation is started, the controller 8300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, and the three-way valve 8032 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1068, the four-way valve 1054, the flow path 8070, the regeneration heat exchanger 8026, the flow path 8072, the four-way valve 1058, the flow. Channel 1074, four-way valve 1056, channel 1076, atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1082, four-way valve 1062, channel 8118, heat for evaporation / condensation A circulation path returning to the compressor 1042 is formed through the exchanger 8038, the flow path 8088, the four-way valve 1050, the flow path 1094, the four-way valve 1052, and the flow path 1096 in this order. In addition, a flow path is formed from the bottom of the solution tank 8016 through the flow path 8024, the three-way valve 8032, and the flow path 8028 to open inside the solution tank 8016 and above the regeneration heat exchanger 8026.

  The controller 8300 drives the compressor 1042. The controller 8300 drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the blower 1048.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the regeneration heat exchanger 8026. On the other hand, the solution in the solution tank 8016 is pumped out by the pump 1034 and is sprayed from above in the solution tank 8016 to the heat exchanger for regeneration 8026 via the first solution flow path 8024. Heat exchange is performed between the solution sprayed on the surface of the regeneration heat exchanger 8026 and the first heat medium flowing in the regeneration heat exchanger 8026, and the first heat medium is cooled and condensed. The solution is heated. The heated solution is boiled and separated into a vaporized solvent and a concentrated solution. The vaporized solvent separated from the solution flows into the solvent tank 8018 having a vapor pressure lower than that in the solution tank 8016 via the vaporized solvent flow path 1020. The concentrated solution is dropped at the lower part of the solution tank 8016 and mixed with the solution in the solution tank 8016.

  The first heat medium cooled by the regeneration heat exchanger 8026 flows into the atmospheric heat exchanger 1044 and is further cooled by heat exchange with the atmosphere. The first heat medium cooled by the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the evaporation / condensation heat exchanger 8038 in the solvent tank 8018.

  The vaporized solvent that has flowed into the solvent tank 8018 from the solution tank 8016 via the vaporized solvent flow path 1020 is a low temperature first flowing in the evaporation / condensation heat exchanger 8038 on the surface of the evaporation / condensation heat exchanger 8038. Heat exchange with one heat medium. The vaporized solvent is cooled and condensed, and condensation occurs on the surface of the evaporation / condensation heat exchanger 8038. The condensed liquefied solvent is dropped at the bottom of the solvent tank 8018 and stored in the bottom of the solvent tank 8018. The first heat medium flowing inside the evaporation / condensation heat exchanger 8038 is heated by the temperature difference with the vaporized solvent, and further heated by the condensation heat of the vaporized solvent generated on the surface of the evaporation / condensation heat exchanger 8038. Evaporates. The first heat medium evaporated in the evaporation / condensation heat exchanger 8038 is returned to the compressor 1042.

  By the above regeneration operation, the vaporized solvent is separated from the solution in the solution tank 8016, and the solution in the solution tank 8016 is concentrated. On the other hand, the amount of the liquefied solvent stored in the solvent tank 8018 increases. The difference between the latent heat of evaporation of the solvent generated by the heat exchanger for regeneration 8026 and the latent heat of condensation of the solvent absorbed by the heat exchanger for evaporation / condensation 8038 is released to the atmosphere by the atmospheric heat exchanger 1044 together with the energy given by the compressor 1042. Is done.

(2) Heating Operation When the heating operation is started, the controller 8300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1106, 1108, 8032 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 8088, the evaporation / condensation heat exchanger 8038, the flow path 8118, and the four-way valve 1062. , Channel 1082, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1074, four-way valve 1058, channel 1126, four-way valve 1054 A circulation path that returns to the compressor 1042 is formed through the flow path 1068, the four-way valve 1052, and the flow path 1096 in this order. Further, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1146, the air heat exchanger 1142, the flow path 1140, the flow path coupling portion 1134, the flow path 1138, the expansion valve 1102, Channel 1136, three-way valve 1108, channel 1130, channel coupling part 1122, channel 1128, four-way valve 1054, channel 8070, regeneration heat exchanger 8026, channel 8072, four-way valve 1058, channel 1124, three-way valve A circulation path returning to the compressor 1100 is formed through the 1106, the flow path 1112, the four-way valve 1104, and the flow path 1148 in order. In addition, a flow path is formed from the bottom of the solution tank 8016 through the flow path 8024, the three-way valve 8032, and the flow path 8028 to open inside the solution tank 8016 and above the regeneration heat exchanger 8026.

  The controller 1300 drives the compressors 1042 and 1100. Further, the controller drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 1300 drives the fans 1048 and 1144.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the evaporation / condensation heat exchanger 8038 and exchanges heat with the liquefied solvent stored in the solvent tank 8018. By the heat exchange in the heat exchanger 8038 for evaporation / condensation, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044 and is heated and evaporated by heat exchange with the atmosphere. The first heat medium evaporated in the atmospheric heat exchanger 1044 returns to the compressor 1042.

  The vaporized solvent generated on the surface of the evaporation / condensation heat exchanger 8038 in the solvent tank 8018 flows into the solution tank 8016 having a vapor pressure lower than that in the solvent tank 8018 via the vaporized solvent flow path 1020.

  The solution in the solution tank 8016 is pumped from the bottom by the pump 1034 and sprayed from above into the regeneration heat exchanger 8026 in the solution tank 8016. The solution adhering to the surface of the regeneration heat exchanger 8026 absorbs the vaporized solvent flowing from the solvent tank 8018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the first heat medium flowing inside the regeneration heat exchanger 8026. The solution diluted by absorbing the vaporized solvent is dropped into the lower part of the solution tank 8016 and mixed with the solution in the solution tank 8016.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out of the compressor 1100 flows into the air heat exchanger 1142 of the air conditioner 1008 and exchanges heat with air blown to the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is heated to a high temperature and warms the room. By the heat exchange in the air heat exchanger 1142, the first heat medium is cooled and condensed. The first heat medium flowing out from the air heat exchanger 1142 flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the regeneration heat exchanger 8026. In the regeneration heat exchanger 8026, the first heat medium is heated and evaporated. The first heat medium evaporated in the regeneration heat exchanger 8026 returns to the compressor 1100.

  In the heating operation described above, the liquefied solvent in the solvent tank 8018 is evaporated using the heat absorbed from the atmosphere by the atmospheric heat exchanger 1044, and the absorbed heat generated in the solution tank 8016 is used as a heat source for the air conditioner 1008. High temperature heating can be realized with a high COP.

(3) Hot-water supply operation When the hot-water supply operation is started, the controller 8300 switches the four-way valve 1050, 1052, 1054, 1056, 1058, 1062, and the three-way valve 8032 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 8088, the evaporation / condensation heat exchanger 8038, the flow path 8118, and the four-way valve 1062. , Channel 1082, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1074, four-way valve 1058, channel 1126, four-way valve 1054 A circulation path that returns to the compressor 1042 is formed through the flow path 1068, the four-way valve 1052, and the flow path 1096 in this order. Further, a flow path is formed from the bottom of the solution tank 8016 through the flow path 8024, the three-way valve 8032, and the flow path 8030 to open inside the solution tank 8016 and above the absorption heat exchanger 8036.

  The controller 8300 drives the compressor 1042. The controller 8300 drives the pump 1034 and opens the on-off valve 1022. Furthermore, the controller 8300 drives the blower 1048. The controller 8300 drives the pump 1228.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the evaporation / condensation heat exchanger 8038 and exchanges heat with the liquefied solvent stored in the solvent tank 8018. By the heat exchange in the heat exchanger 8038 for evaporation / condensation, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044 and is heated and evaporated by heat exchange with the atmosphere. The first heat medium evaporated in the atmospheric heat exchanger 1044 returns to the compressor 1042.

  The vaporized solvent generated on the surface of the evaporation / condensation heat exchanger 8038 in the solvent tank 8018 flows into the solution tank 8016 having a vapor pressure lower than that in the solvent tank 8018 via the vaporized solvent flow path 1020.

  The solution in the solution tank 8016 is pumped from the bottom by the pump 1034, passes through the first solution channel 8024, the three-way valve 8032, and the second solution channel 8030, and absorbs heat from the top of the solution tank 8016. Spread to 8036.

  The solution adhering to the surface of the absorption heat exchanger 8036 absorbs the vaporized solvent flowing from the solvent tank 8018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the second heat medium flowing inside the absorption heat exchanger 8036. The solution diluted by absorbing the vaporized solvent is dropped onto the bottom of the solution tank 8016 and mixed with the solution inside the solution tank 8016.

  When the pump 1228 is driven, the water pumped from the bottom of the hot water tank 1012 flows into the absorption heat exchanger 8306 via the flow path 8226 and is heated. The water heated in the absorption heat exchanger 8036 flows into the top of the hot water tank 1012 through the flow path 8230.

  In the hot water supply operation described above, the solvent in the solvent tank 8018 is evaporated using heat absorbed from the atmosphere by the atmospheric heat exchanger 1044. The absorption heat of the solution in the solution tank 8016 is used to heat the water in the hot water tank 1012. In this way, hot water is stored in the upper part of the hot water tank 1012.

  In the system 8000 of the present embodiment, the water in the hot water storage tank 1012 is directly supplied to the absorption heat exchanger 8036 and heated. Since water is heated by directly utilizing the absorbed heat generated in the solution tank 8016, loss due to heat transfer can be reduced and heat utilization efficiency can be increased.

(4) Cooling Operation When the cooling operation is started, the controller 8300 switches the four-way valves 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1106, 1108, and 8032 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1042 flows into the flow path 1066, the four-way valve 1052, the flow path 1094, the four-way valve 1050, the flow path 8084, the four-way valve 1062, the flow path 1082, the four-way valve 1056, the flow path 1076, Atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1074, four-way valve 1058, channel 8072, regeneration heat exchanger 8026, channel 8070, four-way valve 1054, flow A circulation path returning to the compressor 1042 is formed through the path 1068, the four-way valve 1052, and the flow path 1096 in this order. Further, the first heat medium flowing out from the compressor 1100 includes a flow path 1110, a four-way valve 1104, a flow path 1112, a three-way valve 1106, a flow path 1114, a four-way valve 1050, a flow path 8088, an evaporation / condensation heat exchanger 8038, Channel 8118, four-way valve 1062, channel 1120, channel coupling unit 1122, channel 1130, three-way valve 1108, channel 1136, expansion valve 1102, channel 1138, channel coupling unit 1134, channel 1140, air conditioner A circulation path returning to the compressor 1100 is formed through the air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 in this order. In addition, a flow path is formed from the bottom of the solution tank 8016 through the flow path 8024, the three-way valve 8032, and the flow path 8028 to open inside the solution tank 8016 and above the regeneration heat exchanger 8026.

  The controller 8300 drives the compressor 1042 and the compressor 1100. The controller 8300 drives the pump 1034 and opens the on-off valve 1022. Further, the controller 8300 drives the blower 1048 and the blower 1144.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the evaporation / condensation heat exchanger 8038 and exchanges heat with the liquefied solvent stored in the solvent tank 8018. By the heat exchange in the heat exchanger 8038 for evaporation / condensation, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the air heat exchanger 1142 of the air conditioner 1008, and exchanges heat with air blown to the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is cooled to a low temperature, and the room is cooled. By heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated. The first heat medium flowing out from the air heat exchanger 1142 returns to the compressor 1100.

  The solution in the solution tank 8016 is pumped from the bottom by the pump 1034 and sprayed from above into the regeneration heat exchanger 8026 in the solution tank 8016. The solution adhering to the surface of the regeneration heat exchanger 8026 absorbs the vaporized solvent flowing from the solvent tank 8018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the first heat medium flowing inside the regeneration heat exchanger 8026. The solution diluted by absorbing the vaporized solvent is dropped into the lower part of the solution tank 8016 and mixed with the solution in the solution tank 8016.

  When the compressor 1042 is driven, the first heat medium is compressed by the compressor 1042 and becomes a high temperature and a high pressure. The first heat medium flowing out from the compressor 1042 flows into the atmospheric heat exchanger 1044, and is cooled and condensed by heat exchange with the atmosphere. The first heat medium condensed in the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the regeneration heat exchanger 8026 and is heated and evaporated. The first heat medium evaporated in the regeneration heat exchanger 8026 returns to the compressor 1042.

  In the above cooling operation, the liquefied solvent in the solvent tank 8018 is evaporated using the heat absorbed by the first heat medium by the cooling in the air conditioner 1008. Further, the absorption heat generated by the solution in the solution tank 8016 is released to the atmosphere in the atmospheric heat exchanger 1044.

(5) Cooling / hot-water supply operation The above-described (4) cooling operation can be performed in parallel with hot-water supply.
When the cooling / hot water supply operation is started, the controller 8300 switches the four-way valves 1050 and 1062 and the three-way valves 1106, 1108, and 8032 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1112, the three-way valve 1106, the flow path 1114, the four-way valve 1050, the flow path 8088, and the evaporation / condensation heat exchanger 8038. , Channel 8118, four-way valve 1062, channel 1120, channel coupling unit 1122, channel 1130, three-way valve 1108, channel 1136, expansion valve 1102, channel 1138, channel coupling unit 1134, channel 1140, air conditioning A circulation path returning to the compressor 1100 is formed through the air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 of the apparatus 1008 in this order. Further, a flow path is formed from the bottom of the solution tank 8016 through the flow path 8024, the three-way valve 8032, and the flow path 8030 to open inside the solution tank 8016 and above the absorption heat exchanger 8036.

  The controller 8300 drives the compressor 1100. The controller 8300 drives the pump 1034 and opens the on-off valve 1022. Further, the controller 8300 drives the blower 1144. Controller 8300 drives pump 1228.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the evaporation / condensation heat exchanger 8038 and exchanges heat with the liquefied solvent stored in the solvent tank 8018. By the heat exchange in the heat exchanger 8038 for evaporation / condensation, the liquefied solvent is heated and evaporated, and the first heat medium is cooled and condensed. The first heat medium cooled by heat exchange with the liquefied solvent flows into the expansion valve 1102 and expands. The first heat medium that has been expanded by the expansion valve 1102 to a low temperature flows into the air heat exchanger 1142 and exchanges heat with air blown onto the surface of the air heat exchanger 1142 by the blower 1144. By heat exchange in the air heat exchanger 1142, the air is cooled to a low temperature, and the room is cooled. By heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated. The first heat medium flowing out from the air heat exchanger 1142 returns to the compressor 1100.

  The solution in the solution tank 8016 is pumped out by the pump 1034 and sprayed to the absorption heat exchanger 8036 from above in the solution tank 8016. The solution adhering to the surface of the absorption heat exchanger 8036 absorbs the vaporized solvent flowing from the solvent tank 8018 via the vaporized solvent flow path 1020 and is diluted. The absorbed heat generated at this time is absorbed by the second heat medium flowing inside the absorption heat exchanger 8036. The solution diluted by absorbing the vaporized solvent is dropped onto the bottom of the solution tank 8016 and mixed with the solution in the solution tank 8016.

  When the pump 1228 is driven, the water pumped from the bottom of the hot water tank 1012 flows into the absorption heat exchanger 8036 via the flow path 8226 and is heated. The water heated in the absorption heat exchanger 8036 flows into the top of the hot water tank 1012 through the flow path 8230.

  In the cooling / hot water supply operation described above, the liquefied solvent in the solvent tank 8018 is evaporated using heat absorbed from the air by cooling in the air conditioner 1008. Absorption heat generated in the solution tank 8016 is used to heat water in the hot water storage tank 1012. Such operation is extremely efficient in using heat. Moreover, since the absorption heat generated in the solution tank 8016 is used as a heat source, high-temperature hot water can be obtained.

(6) Heating operation (compression HP)
In the system 8000 of the present embodiment, even when the liquefied solvent in the solvent tank 8018 is used up and the solution in the solution tank 8016 cannot be further diluted and the absorption heat pump 8002 cannot be used, Heating or cooling using the air conditioner 1008 can be performed using only a compression heat pump.

  When the heating operation (compression HP) is started, the controller 8300 switches the four-way valves 1050, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1146, the air heat exchanger 1142, the flow path 1140, the flow path coupling portion 1134, the flow path 1132, Three-way valve 1108, channel 1130, channel coupling portion 1122, channel 1128, four-way valve 1054, channel 1126, four-way valve 1058, channel 1074, four-way valve 1056, channel 1080, expansion valve 1046, channel 1078, Atmospheric heat exchanger 1044, channel 1076, four-way valve 1056, channel 1082, four-way valve 1062, channel 8084, four-way valve 1050, channel 1114, three-way valve 1106, channel 1112, four-way valve 1104, channel 1148 A circulation path that returns to the compressor 1100 is formed in order.

  The controller 1300 drives the compressor 1100. The blower 1048 and the blower 1144 are driven.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the air heat exchanger 1142 and exchanges heat with air blown to the surface of the air heat exchanger 1142 by the blower 1144. Due to the heat exchange in the air heat exchanger 1142, the first heat medium is cooled and condensed, and the air is heated to a high temperature. The air conditioner 1008 warms the room using high-temperature air. The first heat medium cooled in the air heat exchanger 1142 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the atmospheric heat exchanger 1044 and exchanges heat with the atmosphere blown to the surface of the atmospheric heat exchanger 1044 by the blower 1048. By the heat exchange in the atmospheric heat exchanger 1044, the first heat medium is heated and evaporated, and the atmosphere is cooled. The first heat medium heated by the atmospheric heat exchanger 1044 returns to the compressor 1100.

  In the heating operation (compression HP), air is heated by the air heat exchanger 1142 of the air conditioner 1008 using heat absorbed from the atmosphere by the atmospheric heat exchanger 1044. The room can be heated using the heated air.

  According to the system 8000 of the present embodiment, the heating operation can be continued even after the solvent in the solvent tank 8018 has been used up.

(7) Cooling operation (compression HP)
When the cooling operation (compression HP) is started, the controller 8300 switches the four-way valves 1050, 1054, 1056, 1058, 1062, 1104, and the three-way valves 1106, 1108 as shown in FIG. As a result, the first heat medium flowing out from the compressor 1100 flows into the flow path 1110, the four-way valve 1104, the flow path 1112, the three-way valve 1106, the flow path 1114, the four-way valve 1050, the flow path 8084, the four-way valve 1062, the flow path 1082, Four-way valve 1056, channel 1076, atmospheric heat exchanger 1044, channel 1078, expansion valve 1046, channel 1080, four-way valve 1056, channel 1074, four-way valve 1058, channel 1126, four-way valve 1054, channel 1128, The flow path coupling part 1122, the flow path 1130, the three-way valve 1108, the flow path 1132, the flow path coupling part 1134, the flow path 1140, the air heat exchanger 1142, the flow path 1146, the four-way valve 1104, and the flow path 1148 of the air conditioner 1008 A flow path that returns to the compressor 1100 is formed in order.

  The controller 8300 drives the compressor 1100. The blower 1048 and the blower 1144 are driven.

  When the compressor 1100 is driven, the first heat medium is compressed by the compressor 1100 and becomes high temperature and pressure. The first heat medium flowing out from the compressor 1100 flows into the atmospheric heat exchanger 1044 and exchanges heat with the atmosphere blown to the surface of the atmospheric heat exchanger 1044 by the blower 1048. By heat exchange in the atmospheric heat exchanger 1044, the first heat medium is cooled and condensed, and the atmosphere is heated. The first heat medium cooled in the atmospheric heat exchanger 1044 flows into the expansion valve 1046 and expands. The first heat medium that has been expanded by the expansion valve 1046 to a low temperature flows into the air heat exchanger 1142 and exchanges heat with the air blown onto the surface of the air heat exchanger 1142 by the blower 1144. By the heat exchange in the air heat exchanger 1142, the first heat medium is heated and evaporated, and the air is cooled. The air conditioner 1008 cools the room using the cooled air. The first heat medium heated by the air heat exchanger 1142 returns to the compressor 1100.

  In the cooling operation (compression HP), the heat absorbed by the air heat exchanger 1142 of the air conditioner 1008 is released to the atmosphere by the atmospheric heat exchanger 1044. The air cooled by the air heat exchanger 1142 can be used to cool the room.

  According to the system 1000 of the present embodiment, the cooling operation can be continued even after the solvent in the solvent tank 1018 has been used up.

  As described above, according to the system 8000 of this embodiment, the regeneration operation, the heating operation, the hot water supply operation, the four-way valve 1050, 1052, 1054, 1056, 1058, 1062, 1104, and the three-way valve 1106, 1108 are switched. Any of a cooling operation, a cooling / hot water supply operation, a heating operation (compression HP), and a cooling operation (compression HP) can be performed.

  In the system 8000 of the present embodiment, the heat exchanger for condensation 1038 and the heat exchanger for evaporation 1040, which are separate devices in the system 1000 of the first embodiment, are integrated to form a heat exchanger for evaporation / condensation 8038. Thus, the flow paths 1086 and 1090 and the three-way valve 1064 are not required, and a system with a simpler configuration is realized.

  According to the system 8000 of the present embodiment, the heating efficiency at the time of hot water supply can be improved by supplying the water in the hot water storage tank 1012 to the absorption heat exchanger 8036 and directly heating it.

Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
For example, in the above-described embodiment, the heat pump system using water as a refrigerant and a lithium bromide aqueous solution as an absorbent has been described. However, the present invention can be embodied as a heat pump system using ammonia as a refrigerant and water as an absorbent.
In addition, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

It is a figure which shows the state at the time of the reproduction | regeneration driving | operation of the system. (First embodiment) It is a figure which shows the state at the time of the heating operation of the system 1000. FIG. (First embodiment) It is a figure which shows the state at the time of the hot water supply driving | operation of the system. (First embodiment) It is a figure which shows the state at the time of air_conditionaing | cooling operation of the system 1000. FIG. (First embodiment) It is a figure which shows the state at the time of the air_conditioning | cooling / hot-water supply operation | movement of the system 1000. FIG. (First embodiment) It is a figure which shows the state at the time of heating operation (compression HP) of the system 1000. FIG. (First embodiment) It is a figure which shows the state at the time of the cooling operation (compression HP) of the system 1000. FIG. (First embodiment) It is a figure which shows the state at the time of the reproduction | regeneration driving | operation of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of heating operation of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of the hot water supply driving | operation of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of air_conditionaing | cooling operation of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of the air_conditioning | cooling and hot-water supply driving | operation of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of heating operation (compression HP) of the system 8000. FIG. (Second embodiment) It is a figure which shows the state at the time of air_conditionaing | cooling operation (compression HP) of the system 8000. FIG. (Second embodiment)

Explanation of symbols

1000: system 1002: absorption heat pump 1004: first compression heat pump 1006: second compression heat pump 1008: air conditioner 1010: floor heating device 1012: hot water tank 1014: auxiliary heating device 1016: solution tank 1018: solvent tank 1020: Vaporized solvent flow path 1022: On-off valve 1024: First solution flow path 1026: Regeneration heat exchanger 1028: Solution pipe 1030: Refrigerant pipe 1032: Second solution flow path 1034: Pump 1036: Absorption heat exchanger 1038: Condensation Heat exchanger 1040: Evaporation heat exchanger 1042: Compressor 1044: Atmospheric heat exchanger 1046: Expansion valve 1048: Blower 1050, 1052, 1054, 1056, 1058, 1062: Four-way valve 1060: Flow path coupling part 1064: Three-way Valves 1066, 1068, 1070, 1072, 10 4, 1076, 1078, 1080, 1082, 1084, 1086, 1088, 1090, 1092, 1094, 1096: flow path 1100: compressor 1102: expansion valve 1104: four-way valve 1106, 1108: three-way valve 1110, 1112, 1114, 1116, 1118, 1120, 1124, 1126, 1128, 1130, 1132, 1136, 1138, 1140, 1146, 1148: flow path 1122, 1134: flow path coupling part 1142: air heat exchanger 1144: blower 1200, 1208, 1212 , 1216, 1220, 1222: flow path 1202: heat exchanger 1204: refrigerant pipe 1206: water pipe 1210: three-way valve 1214: refrigerant pipe 1218: flow path coupling part 1224: pump 1226, 1230: flow path 1228: pump 1232: water Pipe 1234: Hot water supply path 1236: Burner 1238: Hot water supply pipe 1300: Controller 1302: Remote control 8000: System 8002: Absorption heat pump 8004: First compression heat pump 8016: Solution tank 8018: Solvent tank 8024: First solution flow path 8026: Heat exchanger for regeneration 8028: third solution channel 8030: second solution channel 8032: three-way valve 8036: heat exchanger for absorption 8038: heat exchanger for evaporation / condensation 8070, 8072, 8084, 8088, 8118: flow Channels 8226, 8230: Channel 8234: Hot water supply channel 8300: Controller

Claims (3)

A solution tank for storing the solution inside,
A solvent tank for storing the liquefied solvent inside,
A vaporized solvent flow path through which the vaporized solvent passes through the upper part of the solution tank and the upper part of the solvent tank;
A heat exchanger for regeneration that heat-exchanges the solution stored in the solution tank and the heat medium, evaporates the solvent from the solution, and separates the solution and the vaporized solvent inside the solution tank;
Heat exchange between the vaporized solvent flowing into the solvent tank and the heat medium, condensing the vaporized solvent inside the solvent tank to form a liquefied solvent, and a heat exchanger for condensation,
Heat exchange between the liquefied solvent stored in the solvent tank and the heat medium, evaporating the liquefied solvent, and generating a vaporized solvent inside the solvent tank; and
Heat exchange between the solution stored in the solution tank and the heat medium, and an absorption heat exchanger for absorbing the vaporized solvent in the solution inside the solution tank;
Compression means for compressing the heat medium;
Expansion means for expanding the heat medium;
An atmospheric heat exchanger that exchanges heat between the heat medium and the atmosphere;
Other compression means for compressing the heat medium;
Other expansion means for expanding the heat medium;
An air heat exchanger that exchanges heat between the heat medium and room air;
A first circulation path of a heat medium returning to the compression means via the compression means, the regeneration heat exchanger, the expansion means, and the condensation heat exchanger in order,
A second circulation path of the heat medium returning to the compression means through the compression means, the evaporating heat exchanger, the expansion means, and the atmospheric heat exchanger in order,
While switching the flow path of the heat medium to either the first circulation path or the second circulation path ,
A first heating circuit of the heat medium returning to the other compression means through the other compression means, the air heat exchanger, the other expansion means, and the regeneration heat exchanger in order,
A switching means for switching to any one of the second heating circulation path of the heat medium returning to the other compression means through the other compression means, the air heat exchanger, the expansion means, and the atmospheric heat exchanger in order, It can be operated in either the regeneration operation for circulating in the first circulation path or the absorption operation for circulating the heat medium in the second circulation path ,
A hybrid heat pump system capable of operating in either a first heating operation in which the heat medium is circulated in the first heating circuit during the absorption operation or a second heating operation in which the heat medium is circulated in the second circuit . A heating device for heating indoor air by heat exchange with a heat medium;
Further comprising a third circulation path for the heating medium returning to the heating device via the heating device and the absorption heat exchanger in order,
The hybrid heat pump system according to claim 1, wherein the heat medium is also circulated through the third circulation path during the absorption operation. A hot water supply heat exchanger that heats water by heat exchange with a heat medium;
Further comprising a fourth circulation path for the heat medium returning to the hot water supply heat exchanger via the hot water supply heat exchanger and the absorption heat exchanger in order,
The hybrid heat pump system according to claim 1, wherein the heat medium is also circulated in the fourth circulation path during the absorption operation.

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