JP2011133122A - Ground heat utilization heat pump system and water heat utilization heat pump system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce consumption of power from a commercial power source by a comparatively simple system utilizing inexpensive ground heat. <P>SOLUTION: This ground heat utilization heat pump unit system includes an in-ground heat exchange pipe 141, a heat pump unit 110, tank circulation circuits 145, 146 for delivering a heat medium in a heat medium tank 150 to the heat pump unit, a warm water tank 170, a warm water tank circuit 171 for circulating the heat medium from the heat pump unit to the warm water tank, and heating/cooling circulation circuits 161, 162 for taking out the heat medium from the heat medium tank, and delivering the same to a heat absorption/radiation panel, and the heat pump unit heats the heat medium by delivering the heat medium at a lower part of the heat medium tank to the heat pump unit, when the in-ground heat exchange pipe is connected to a heat radiation circuit pipe 121 of the heat pump unit, and a heat absorption circuit pipe 125 for heating the heat medium to the tank circulation circuit, and lowers a temperature of the heat medium by delivering the heat medium at an upper part of the heat medium tank to the heat pump unit, when the in-ground heat exchange pipe is connected to the heat absorption circuit pipe, and the heat radiation circuit pipe is connected to the tank circulation circuit. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention collects and compresses natural energy such as underground heat and moves it by compressing it, storing it as high temperature or low temperature, returning it to the original underground etc. when it is used for housing etc. The present invention relates to a heat pump system that can effectively perform energy saving measures and environmental coexistence.

  Today, emphasis is placed on global warming countermeasures, and next-generation energy-saving standards have been announced by the Ministry of Land, Infrastructure, Transport and Tourism. Various attempts have been made to reduce unnecessary consumption.

  In recent years, the III and IV areas of the next-generation energy conservation standards are often equipped with both cooling and heating facilities, and the annual consumption of living energy has increased, so a system that uses natural energy has been incorporated. There are more houses and houses.

  As for the use of natural energy, solar heat or underground heat is used as energy for air conditioning (for example, Patent Document 1), underground heat of several tens of meters or heat of domestic wastewater is recovered with a heat pump and solar heat is also used. There is a combination (for example, Patent Document 2) that replenishes living energy comprehensively in combination.

JP 2008-185323 A JP 2007-271178 A

  Although the systems using solar heat and geothermal heat as described above can reduce power consumption from commercial power sources, they are still insufficient, and systems using geothermal heat may become complicated. There are many demands for systems that use relatively simple and inexpensive geothermal heat.

  The ground heat utilization heat pump system according to the present invention is a pipe buried in the ground and through which a heat medium passes, a heat pump unit, and a heat medium in a heat medium tank to the heat pump unit. A tank circulation circuit for sending and circulating, a hot water tank for storing tap water, and a hot water tank circuit for circulating the heat medium heated at the heat pump unit back to the heat pump unit via the heat exchanger in the hot water tank And, the heat medium in the heat medium tank is taken out from the upper part of the heat medium tank and returned to the lower part of the heat medium tank through an absorption / radiation panel, or the heat medium in the heat medium tank is returned to the heat medium tank. An air-conditioning and circulation circuit that takes out from the lower part and returns to the upper part of the heat medium tank through the heat-absorbing and radiating panel, and connecting the underground heat exchange pipe to a heat-dissipating circuit pipe that radiates heat in the heat pump unit, When connecting an endothermic circuit pipe that receives heat from a high-temperature heat medium in the heat pump unit to the tank circulation circuit, the lower heat medium in the heat medium tank is sent to the heat pump unit and placed in the upper part of the heat medium tank. Returning the heat medium to warm the heat medium in the heat medium tank, connecting the underground heat exchange pipe to the heat absorption circuit pipe, and connecting the heat dissipation circuit pipe to the tank circulation circuit, A heat pump system using the underground heat is provided that includes a heat pump unit that sends the upper heat medium to the heat pump unit and returns the heat medium to the lower part of the heat medium tank to lower the temperature of the heat medium in the heat medium tank.

  And the front-end | tip part where the said underground heat exchange pipe in the said heat pump system is turned back is used as the underground heat utilization heat pump system embed | buried in the underground etc. of the depth of about 50 to 100 meters underground.

  Furthermore, the heat pump system includes a solar heat collector, and heats the tap water in the hot water tank with a heat medium heated by the solar heat collector, and can also heat the heat medium in the heat medium tank. Furthermore, a heat pump system using geothermal heat that can raise the temperature in the hot water tank to about 90 degrees Celsius by an auxiliary heater or the like may be used.

  The heat medium in the heat absorption pipe of the heat pump unit in the heat pump system is a geothermal heat pump system that is heated to a temperature of about 60 degrees Celsius.

  The heat pump system further includes a solar power generator, and may be a geothermal heat pump system that enables driving of the heat pump unit and a drive pump that circulates the heat medium by the power of the solar power generator. .

  The present invention also relates to a heat exchange pipe that is laid in a river or lake by changing the underground heat exchange pipe to a heat exchange pipe disposed in water such as a river, and a heat pump. Unit, a tank circulation circuit for circulating the heat medium in the heat medium tank to the heat pump unit, a hot water tank for storing tap water, and heat exchange in the hot water tank for the heat medium heated to the heat pump unit A hot water tank circuit that circulates back to the heat pump unit via a vessel, and takes out the heat medium in the heat medium tank from the upper part of the heat medium tank and returns it to the lower part of the heat medium tank through an absorption and radiation panel, Or a heating / cooling circulation circuit for taking out the heat medium in the heat medium tank from the lower part of the heat medium tank and returning it to the upper part of the heat medium tank through the heat absorbing / dissipating panel, and connecting the heat exchange pipe to the heat pump unit. When connecting a heat absorption circuit pipe that receives heat transfer from a high-temperature heat medium in the heat pump unit to the tank circulation circuit, the lower heat medium in the heat medium tank is connected to the heat dissipation circuit pipe that radiates heat in the heat pump unit. Send to the heat pump unit to return the heating medium to the top of the heating medium tank to warm the heating medium in the heating medium tank, connect the heat exchange pipe to the heat absorption circuit pipe, and connect the heat dissipation circuit pipe to the tank circulation circuit When using the water heat provided with a heat pump unit that sends the upper heat medium in the heat medium tank to the heat pump unit, returns the heat medium to the lower part of the heat medium tank, and lowers the heat medium in the heat medium tank It may be a heat pump system.

  The heat pump system using geothermal heat according to the present invention is installed in a house where energy conservation measures and environmental symbiosis have been applied, thereby recovering geothermal heat with a heat pump unit and placing a high-temperature heat medium in the upper part of the heat medium tank. Heating operation is possible by storing and sending the heat medium at the top of the heat medium tank to the heat absorbing and radiating panel as necessary, and heat is dissipated into the ground by the heat pump unit, and low temperature heat is generated in the lower part of the heat medium tank. Cooling operation is possible by storing the medium and sending the heat medium at the bottom of the heat medium tank to the heat absorbing / dissipating panel as necessary, and heating the tap water in the hot water tank to supply hot water necessary for daily life It can be performed.

  In this way, it is possible to use geothermal heat, which is natural energy, for energy consumption necessary for daily living as hot water and air conditioning, and to use it for daily energy consumption with a simple heat pump unit equipped with a hot water tank and a heat medium tank. It is possible to reduce the consumption of electricity from the commercial power source and to enable a comfortable life.Especially in the house that conforms to the standards of the next generation energy conservation standards of the Ministry of Land, Infrastructure, Transport and Tourism, the districts III and IV, It is possible to realize a comfortable life while reducing the power consumption.

  In addition, not only houses but also buildings such as sports facilities, indoor air conditioning temperature management in large enclosed spaces such as agricultural greenhouses, etc., it is possible to perform temperature adjustment with power saving.

  And by burying this underground heat exchange pipe in the underground at a depth of about 50 meters to 100 meters underground, the underground heat of relatively stable temperature of 16 degrees Celsius and 17 degrees Celsius is used as energy throughout the year. Can be used.

  Furthermore, if thermal energy such as solar heat from a solar heat collector is used, more natural energy can be used as a heat source for securing living warm water and heating.

  Moreover, if an auxiliary heater is provided in the hot water tank, hot water can be stored in the hot water tank without applying a large load to the heat pump unit, and the hot water can be used effectively by increasing the thermal efficiency of the system.

  The temperature of the heat medium heated by the heat pump unit can be set to about 60 degrees Celsius, or a solar heat collector or the like can be used, and hot water or heating at a temperature necessary for living without increasing the load on the heat pump unit. A heat source can be secured.

  Furthermore, if a solar power generator is provided, the power consumed from the commercial power source can be further reduced by using natural energy for driving the heat pump unit.

  In addition, a hydrothermal heat pump system that uses the heat of rivers and lakes instead of underground heat can easily and easily dispose the heat exchange pipe in the water without burying the heat exchange pipe deeply in the ground. The indoor air conditioning and hot water supply of facilities and houses can be easily and inexpensively performed according to the topography.

BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram of the air conditioning system of the geothermal heat pump system which concerns on this invention. The figure which shows the hot_water | molten_metal supply heating state of the geothermal heat utilization heat pump system which concerns on this invention. The figure which shows the heating state of the underground heat utilization heat pump system which concerns on this invention. The figure which shows the air_conditioning | cooling state of the underground heat utilization heat pump system which concerns on this invention. The figure which shows the other state of the air_conditioning | cooling state of the geothermal heat utilization heat pump system which concerns on this invention.

An embodiment of a heat pump system using ground heat according to the present invention is a pipe embedded in the ground, in which a heat transfer pipe 141 through which a heat medium passes, a heat pump unit 110, and heat in the heat medium tank 150 Tank circulation circuits 145 and 146 for sending and circulating the medium to the heat pump unit 110, a hot water tank 170 for storing tap water, and a heat medium heated to a high temperature by the heat pump unit 110 via a heat exchanger 172 in the hot water tank 170 The hot water tank circuit 171 to be circulated and the heat medium in the heat medium tank 150 is taken out from the upper part of the heat medium tank and returned to the lower part of the heat medium tank through the heat absorbing / dissipating panel 165, or the heat medium tank A heating / cooling circulation circuit 161, 162 for taking out the heat medium in 150 from the lower part of the heat medium tank and returning it to the upper part of the heat medium tank via the heat absorbing / dissipating panel 165, and connecting the underground heat exchange pipe 141 to the heat pump unit 110. Heat dissipation heat exchange in When connecting the heat absorption circuit pipe 125, which is connected to the heat circuit pipe 121 and performs heat exchange so as to receive heat transfer from the high-temperature heat medium in the heat pump unit 110, to the tank circulation circuits 145, 146, The lower heating medium is sent to the heat pump unit 110, the heating medium is returned to the upper part of the heating medium tank 150 to warm the heating medium in the heating medium tank 150, and the heating medium in the upper heating medium tank is absorbed by the cooling / heating circulation circuits 161 and 162. When the heat sink pipe 165 is connected, the underground heat exchange pipe 141 is connected to the heat absorption circuit pipe 125, and the heat dissipation circuit pipe 121 is connected to the tank circulation circuits 145 and 146, the upper heat medium in the heat medium tank 150 Is sent to the heat pump unit 110 to return the heat medium to the lower part of the heat medium tank 150 to lower the heat medium in the heat medium tank 150, and the heat medium in the lower part of the heat medium tank 150 Land with heat pump system to send to It is to heat Pump System.
The heat absorbing / dissipating panel 165 can be replaced by piping in the floor or floor slab.

  And, the ground heat exchange pipe 141 in the heat pump system is a geothermal heat utilization heat pump system in which the tip portion 142 folded back is a heat pump system embedded in the ground at a depth of about 50 meters to 100 meters underground, Further, the heat pump system includes a solar heat collector 180, and the tap water in the hot water tank 170 is heated by the heat medium heated by the solar heat collector 180, and the heat medium in the heat medium tank 150 is also used. The heat pump system uses geothermal heat that can be heated.

  In addition, the heat medium in the heat absorption circuit pipe 125 of the heat pump unit 110 in the heat pump system is heated to a temperature of about 60 degrees Celsius, and the house equipped with the heat pump system is in the III district in the next-generation energy saving standard of the Ministry of Land, Infrastructure, Transport and Tourism. It is preferable to have a house that meets the criteria of the IV district.

  In addition, it can also be set as the water-heat utilization heat pump system by replacing with a ground heat exchange pipe and setting it as the heat exchange pipe installed in the water of a river or a lake.

  As shown in FIG. 1, the heat pump system using geothermal heat as an embodiment of the present invention is applied to a house that is a heat-insulating house 100 having heat insulation and airtightness, and collects ground heat by a heat pump unit 110. Geothermal heat with heat pump unit 110 that stores hot water in the hot water tank 170, stores the heat medium heated or lowered by the heat pump unit 110 in the heat medium tank 150 for cooling and heating, and can also use solar heat Use heat pump system.

  The heat pump unit 110 includes a compression pump 116, an expansion valve 112, a condenser 114, and an evaporator 118. The evaporator 118 incorporates a heat exchanger of a heat radiation circuit pipe 121 including a first heat medium pump 123. The first circuit switching valve 131 is connected to the end of the heat dissipation circuit pipe 121 on the pump discharge side, and the second circuit switching valve 132 is connected to the end of the heat dissipation circuit pipe 121 on the pump suction side. In addition, a heat exchanger of an endothermic circuit pipe 125 having a second heat medium pump 127 is incorporated in the condenser 114, and an end portion on the pump discharge side of the endothermic circuit pipe 125 is connected via a hot water tank circuit switching valve 135. Thus, the third circuit switching valve 133 is connected to the end of the heat absorption circuit pipe 125 on the pump suction side, and the fourth circuit switching valve 134 is connected.

  The first circuit switching valve 131 to the fourth circuit switching valve 134 and the hot water tank circuit switching valve 135 are three-way valves.

  A ground heat exchange pipe 141 is connected to the first circuit switching valve 131 and the second circuit switching valve 132 connected to the end of the heat radiating circuit pipe 121, and the ground heat exchange pipe 141 is turned up. This is a pipe that embeds the front end 142 in the ground so that it is at a depth of 50 to 100 meters underground. A heat medium can be circulated in the pipe, and the first circuit switching valve 131 and the second When both ends of the underground heat exchange pipe 141 are connected to both ends of the heat dissipation circuit pipe 121 by the circuit switching valve 132, the heat medium in the pipe passes through the evaporator 118 of the heat pump unit 110 by the first heat medium pump 123, It circulates in the ground and returns to the evaporator 118.

  Therefore, the heat medium circulating in the pipe by the first heat medium pump 123 transfers the heat of the heat medium slightly warmed by the temperature in the ground to the heat medium circulating in the heat pump unit 110 in the evaporator 118. As a result, the temperature of the heat medium in the pipe with the lowered temperature is circulated so as to be sent to the underground heat exchange pipe 141 by the first heat medium pump 123.

  The third circuit switching valve 133 provided at the end of the heat absorption circuit pipe 125 on the pump discharge side is connected to a tank circulation circuit first pipe 145 that is a tank circulation circuit, and the heat absorption circuit pipe 125 is connected to the pump suction side. The fourth circuit switching valve 134 provided at the end is connected to a tank circulation circuit second pipe 146 as a tank circulation circuit, and the first cooling / heating switching valve 156 is connected to the other end of the tank circulation circuit first pipe 145. The second cooling / heating switching valve 157 is connected to the other end of the second tank circulation circuit pipe 146.

  The first cooling / heating switching valve 156 and the second cooling / heating switching valve 157 also use three-way valves, and are connected to the heat medium tank 150 so as to communicate with the inside of the heat medium tank 150 near the upper end of the heat medium tank 150. 151 is connected to the first cooling / heating switching valve 156 and the second cooling / heating switching valve 157, and is connected to the heat medium tank 150 so as to communicate with the inside of the heat medium tank 150 in the vicinity of the lower end of the heat medium tank 150. 152 is connected to the first cooling / heating switching valve 156 and the second cooling / heating switching valve 157.

  Therefore, by operating the first cooling / heating switching valve 156 and the second cooling / heating switching valve 157, which are three-way valves, the first pipe 145 for the tank circulation circuit is connected to the upper part of the heating medium tank 150 by the heating medium circulation connection upper pipe 151. The tank circulation circuit second pipe 146 is connected to the lower part of the heat medium tank 150 by the heat medium circulation connection lower pipe 152, and the tank circulation circuit first pipe 145 is heated by the heat medium circulation connection lower pipe 152. The connection is switched so that the second pipe 146 for the tank circulation circuit is connected to the upper part of the heat medium tank 150 by the heat medium circulation connection upper pipe 151 by connecting to the lower part of the tank 150 and the heat pump unit 110 and the heat medium by the tank circulation circuit. A tank 150 can be connected.

  The tank circulation circuit first pipe 145 is connected to the pump discharge side of the heat absorption circuit pipe 125 passing through the condenser 114 of the heat pump unit 110 via the third circuit switching valve 133 and the third circuit switching valve 133. Is connected to the first circuit switching valve 131, which is a three-way valve, by a first switching connection pipe 136 provided so as to branch from the first pipe 145 for tank circulation circuit. Then, a third circuit switching valve 133 in which the underground heat exchange pipe 141 is a three-way valve is provided by a third switching connection pipe 138 provided so as to branch from the underground heat exchange pipe 141 in the vicinity of the first circuit switching valve 131. Connected to.

  Further, the heat absorption circuit pipe 125 is connected to the second circuit switching valve 132 which is a three-way valve by a second switching connection pipe 137 provided to branch in the vicinity of the fourth circuit switching valve 134, and the evaporation of the heat pump unit 110. The heat radiation circuit pipe 121 is connected to the fourth circuit switching valve 134, which is a three-way valve, by a fourth switching connection pipe 139 provided so as to branch near the second circuit switching valve 132 of the heat radiation circuit pipe 121 passing through the condenser 118. The

  Therefore, by controlling the first circuit switching valve 131 to the fourth circuit switching valve 134, the tank circulation circuit first pipe 145 and the tank circulation circuit second pipe 146 which are tank circulation circuits are connected to the heat absorption circuit pipe 125. While switching from connection to connection to the heat dissipation circuit pipe 121, both ends of the underground heat exchange pipe 141 can be switched from connection to the heat dissipation circuit pipe 121 to connection to the heat absorption circuit pipe 125.

  Further, the piping of this heat pump system has a hot water tank circuit, and the hot water tank circuit pipe branches from the vicinity of the hot water tank circuit switching valve 135 and the fourth circuit switching valve 134 in the heat absorption circuit pipe 125. The hot water tank circuit pipe 171 is disposed so as to pass through the inside of the hot water tank 170, and the heat medium passing through the second heat medium pump 127 and the heat pump unit 110 is transferred to the hot water tank 170 by the hot water tank circuit pipe 171. It can be circulated inside.

  The hot water tank circuit pipe 171 is provided so as to dispose the heat exchanger 172 in the hot water tank 170, and the hot water tank 170 is filled with a heat medium passing through the heat pump unit 110 and the hot water tank circuit pipe 171. The tap water which is the tap water can be heated.

  In addition, a water supply pipe 174 is connected to the lower part of the hot water tank 170 so that tap water from the water inlet 173 can be injected into the hot water tank 170 from the lower part of the hot water tank 170 via the water valve 175. A hot water supply pipe 177 that is a hot water pipe is connected to the upper part of the hot water tank 170 so that the hot water in the upper part of the hot water tank 170 can be discharged from the hot water supply port 179.

  Further, a hot water preheating circuit 181 from the solar heat collector 180 is connected to the hot water tank 170, and the hot water preheating circuit 181 has a heat exchanger 183 inside the hot water tank 170 and is connected to the solar heat collector 180. The tap water in the hot water tank 170 is heated by the heated heat medium, and the heat medium whose temperature has been lowered by heating the tap water in the hot water tank 170 is transferred to the solar heat collector 180 by the hot water preheating pump 182. I try to return it.

  The heat pump system also has a heat medium preheating circuit 185 branched from the hot water preheating circuit 181 from the solar heat collector 180, and the heat medium heated by the solar heat collector 180 by the heat medium preheating circuit 185. Can be guided to the heat medium tank 150.

  The heat exchanger 187 provided in the heat medium preheating circuit 185 is disposed inside the heat medium tank 150, and the heat medium preheating circuit 185 is also provided with a heat medium preheating pump 186 and heated by the solar heat collector 180. The heat medium can be circulated back from the solar heat collector 180 to the solar heat collector 180 through the inside of the heat medium tank 150.

  Further, in this heat medium tank 150, an air conditioning connection upper pipe 153 communicating with the inside of the heat medium tank 150 is connected in the vicinity of the upper part of the heat medium tank 150, and an air conditioning connection lower pipe 154 communicating with the inside of the heat medium tank 150. Is connected to the vicinity of the lower part of the heating medium tank 150, and the other end of the cooling / heating connection upper pipe 153 is branched and connected to the third cooling / heating switching valve 158 and the fourth cooling / heating switching valve 159 which are three-way valves. The cooling / heating connection lower pipe 154 also branches at the other end and is connected to the third cooling / heating switching valve 158 and the fourth cooling / heating switching valve 159.

  The third cooling / heating switching valve 158 is connected to a cooling / heating circulation forward pipe 161 as a heating / cooling circulation circuit having a cooling / heating pump 163, and the fourth cooling / heating switching valve 159 is connected to a cooling / heating circulation return pipe 162 as a cooling / heating circulation circuit. And an air-absorbing / dissipating panel 165 provided with a thermo valve 166 as appropriate is disposed between the air-conditioning / circulation forward pipe 161 and the air-conditioning / circulation return pipe 162.

  The air conditioning pump 163 is linked with a temperature sensor and the like, and is controlled so that the air conditioning pump 163 is operated until the room temperature reaches a set temperature. The thermo valve 166 adjusts the heat radiation amount of the heat absorbing and radiating panel 165. Is to do. When the thermo valve 166 is opened, the heat medium in the heat medium tank 150 is sent to the heat absorbing / dissipating panel 165 by the cooling / heating pump 163, and the heat medium via the heat absorbing / dissipating panel 165 is transferred by the cooling / heating circulation return pipe 162 to the heat medium tank. The flow rate of the heat medium passing through the heat absorbing / dissipating panel 165 is controlled by the opening degree of the thermo valve 166.

  In the heat-insulated house 100 that can be used for underground heat equipped with the heat pump system having the heat medium pipe as described above, first, the first circuit switching valve 131, the second circuit switching valve 132, and the fourth circuit switching valve 134 are connected to the temperature. The aquarium circuit switching valve 135 is controlled, and as shown in FIG. 2, both ends of the underground heat exchange pipe 141 are connected to both ends of the heat radiation circuit pipe 121 by the first circuit switching valve 131 and the second circuit switching valve 132, The heat pump circuit 110 is started by connecting the heat absorption circuit pipe 125 and the hot water tank circuit pipe 171.

  This underground heat exchange pipe 141 has its tip embedded in the ground at 50 to 100 meters underground, and is constantly at a stable temperature of about 16 degrees Celsius throughout the year. Even when the temperature is about 1, the first heat medium pump 123 is sent into the underground heat exchange pipe 141 at a heat medium temperature of about 10 degrees Celsius, passes through the tip 142, and is heated to a temperature of about 12 degrees to 15 degrees Celsius. The heat medium is dissipated by heat exchange provided in the evaporator 118 of the heat pump unit 110 by the heat dissipating circuit pipe 121, and the heat of the heat medium in the heat dissipating circuit pipe 121 is converted into a heat medium circulating in the heat pump unit 110. The heat medium in the heat pump unit 110 that has been transferred to the evaporator 118 and received heat from the heat radiation circuit pipe 121 to about 12 to 15 degrees Celsius is pressurized and heated by the compression pump 116 to about 60 degrees Celsius. , Evaporator 118 Absorbed by ground heat the condenser 114 is absorbed by the heat exchanger to the heat medium of the heat absorbing circuit pipe 125 is capable of heating the heat medium of the heat absorbing circuit pipe 125 at about 60 degrees Celsius.

  At this time, the second heat medium pump 127 is driven by controlling the hot water tank circuit switching valve 135 so that the heat medium in the heat absorption circuit pipe 125 can be circulated only in the hot water tank circuit pipe 171. By sending the heat medium set to about 60 degrees Celsius by the unit 110 to the hot water tank 170, the hot water tank circuit pipe 171 performs heat exchange in the heat exchanger 172 to heat the tap water, and the tap water in the hot water tank 170 is changed to 60 The hot water is used as domestic hot water by discharging hot water from a hot water outlet 179 in the house as hot water of a moderate degree.

  As described above, the temperature of the heat medium heated by the heat absorption circuit pipe 125 is set to about 60 degrees Celsius, the tap water in the hot water tank 170 is set to about 60 degrees Celsius, and the heat from the solar heat collector 180 is further increased. When the auxiliary heater 176 is installed in the hot water tank 170, the tap water in the hot water tank 170 is drained by electric power from the solar power generator 190 or midnight power. In some cases, the water temperature is set to 90 degrees Celsius.

  By adjusting the heat pump unit 110 in this way, the hot water of about 60 degrees is supplied and combined with the use of solar heat or the like, so that the amount of energy required for driving the heat pump unit 110 is kept low and necessary for daily life. A hot water temperature of 90 degrees Celsius and a heat medium of about 60 degrees as a heat source necessary for heating can be secured.

  The hot water in the hot water tank 170 is replenished from the hot water outlet 173 to the bottom of the hot water tank 170 according to the amount used from the hot water supply port 179, and the hot water tank 170 is filled with hot water according to the tank capacity and purpose of use. It is to secure.

  When heating the hot water tank 170, as described above, the heating medium heated by the solar heat collector 180 and heated to 60 degrees Celsius or higher is also circulated through the hot water preheating circuit 181 by the hot water preheating pump 182. Can be sent to the hot water tank 170, used for heating the tap water in the hot water tank 170, and can be used by heating the tap water in the hot water tank 170 as appropriate using an auxiliary heater 176. .

  In this heat pump system using geothermal heat, the water temperature near the bottom of the hot water tank 170, the heat medium temperature of the solar heat collector 180, and the heat medium on the outlet side of the heat pump unit 110 of the heat absorption circuit pipe 125 and the heat radiation circuit pipe 121 are used. A temperature sensor that detects the temperature and the temperature of the heating medium near the inner bottom of the heating medium tank 150 is provided, so that the hot water temperature in the hot water tank 170 is always maintained at a desired set temperature. The heat pump unit 110 is driven while giving priority to the heating by the heat medium from the heat collector 180, and the geothermal heat is recovered so that the auxiliary heater 176 is energized as necessary to recover the heat in the hot water tank 170. Is heated to a predetermined temperature.

  When the water temperature in the hot water tank 170 reaches the set temperature and heating is required, the tank is operated by operating the hot water tank circuit switching valve 135 and the third circuit switching valve 133 and the fourth circuit switching valve 134. The first circulation circuit pipe 145 and the second tank circulation circuit pipe 146 are connected to the heat absorption circuit pipe 125 to which heat is transferred from the heat medium in the heat pump unit 110, and as shown in FIG. The first pipe 145 is connected to the heating medium circulation connection upper pipe 151 by the first cooling / heating switching valve 156, and the tank circulation circuit second pipe 146 is connected to the heating medium circulation connection lower pipe 152 by the second cooling / heating switching valve 157. It is.

  Furthermore, the cooling / heating connection upper pipe 153 is connected to the cooling / heating circulation forward pipe 161 by the third cooling / heating switching valve 158, and the cooling / heating connection lower pipe 154 is connected to the cooling / heating circulation return pipe 162 by the fourth cooling / heating switching valve 159.

  In the connection state of each pipe shown in FIG. 3, the heat medium that is about 40 to 60 degrees in the heat absorption circuit pipe 125 by driving the heat pump unit 110 is transferred to the heat medium via the heat medium circulation connection upper pipe 151. The heat pump unit 110 is driven so that the heat medium stored in the heat medium tank 150 is injected into the heat medium tank 150 from the upper part of the tank 150 and reaches the set temperature.

  When heating the heat medium in the heat medium tank 150 to a set temperature of about 40 degrees to 60 degrees or maintaining the set temperature, the heat medium temperature inside the solar heat collector 180 is changed in the heat medium tank 150. When the heat medium in the heat medium tank 150 has not reached the set temperature when the heat medium temperature is higher than the heat medium temperature of the solar heat collector 180, the solar heat collector 180 is prioritized over the driving of the heat pump unit 110 as shown in FIG. The heating medium preheating pump 186 is driven to circulate the heating medium heated by the solar heat collector 180 to the heating medium preheating circuit 185, and heat is transferred by heat exchange in the heating medium tank 150. Thus, when the temperature of the tap water stored in the hot water tank 170 reaches the set temperature, the temperature of the heat medium in the heat medium tank 150 is set to a predetermined temperature. When the water temperature in the hot water tank 170 drops below the set temperature while driving the heat pump unit 110, the heat medium is also appropriately transferred to the hot water tank 170. And to send to drive the heat pump unit 110, also intended to heat medium from solar heat collector 180 to drive the hot water preheating pump 182 to send the hot water tank 170 (see FIG. 3).

  Then, the thermo valve 166 of the necessary heat absorbing / dissipating panel 165 is opened in a state where the heat medium of 40 to 60 degrees is accumulated in the heat medium tank 150, and the room temperature sensor is linked to the opening of the thermo valve 166 for air conditioning. When the pump 163 is driven, the upper heat medium in the heat medium tank 150 is sent to the heat absorbing / dissipating panel 165 via the cooling / heating circulation outward pipe 161, and the heat absorbing / dissipating panel 165 dissipates heat and passes through the cooling / heating circulation return pipe 162. Returning to the lower part of the heat medium tank 150, the house can be warmed.

  The heat absorbing / dissipating panel 165 can also heat each room by piping on the floor or slab in the house and replacing the floor or wall with the heat absorbing / dissipating panel 165.

  When cooling is required, the first circuit switching valve 131 to the fourth circuit switching valve 134 are controlled to connect the underground heat exchange pipe 141 to the heat absorption circuit pipe 125, and the tank circulation circuit first pipe 145. The second pipe 146 is connected to the heat radiation circuit pipe 121, and the first cooling / heating switching valve 156 to the fourth cooling / heating switching valve 159 are controlled to connect the heating medium circulation connection upper pipe 151, the heating medium circulation connection lower pipe 152, and the cooling / heating connection. The connection of the upper pipe 153 and the cooling / heating connection lower pipe 154 is switched.

  That is, as shown in FIG. 4, the pump discharge side of the heat radiation circuit pipe 121 is connected to the tank circulation circuit first pipe 145 via the first switching connection pipe 136 by the first circuit switching valve 131 to switch the fourth circuit. The second pipe 146 for the tank circulation circuit is connected to the pump suction side of the heat radiating circuit pipe 121 through the fourth switching connection pipe 139 by the valve 134, and one end of the underground heat exchange pipe 141 is connected to the first pipe by the second circuit switching valve 132. The pump discharge side of the heat absorption circuit pipe 125 through the heat pump unit 110 is connected to the pump suction side of the heat absorption circuit pipe 125 through the second switching connection pipe 137 and the third circuit connection valve 133 through the third switching connection pipe 138. The circuit switching valve is controlled to be connected to the other end of the intermediate heat exchange pipe 141.

  As for the cooling / heating switching valve, the first cooling / heating switching valve 156 is used to circulate the heat medium circulation connection lower pipe 152 to the tank circulation circuit first pipe 145, and the second cooling / heating switching valve 157 is used to circulate the heating medium circulation connection upper pipe 151 to the tank. Connected to circuit second pipe 146, third cooling / heating switching valve 158 connects cooling / heating connection lower pipe 154 to cooling / heating circulation forward pipe 161, and fourth cooling / heating switching valve 159 connects cooling / heating connection upper pipe 153 to cooling / heating circulation return pipe 162 To do.

  Accordingly, the heat medium in the heat radiation circuit pipe 121 passing through the evaporator 118 of the heat pump unit 110 is used as a heat medium in a low temperature state of about 7 to 25 degrees Celsius and the first pipe 145 for the tank circulation circuit and the lower part of the heat medium circulation connection It is injected into the lower part of the heat medium tank 150 through the pipe 152, and this low temperature heat medium is sent to the heat absorbing / dissipating panel 165 as needed to perform the cooling operation, so that the heated heat medium is injected into the upper part of the heat medium tank 150. Further, the cooling and heating circulation forward pipe 161 and the return pipe 162 can be circulated to cool the house.

  Then, the heat medium that has finished cooling and returned to the heat medium tank 150 passes through the upper connection pipe 151 of the heat medium tank 150 and then passes through the second pipe 146 for the circulation circuit through the second cooling / heating switching valve 157 to the fourth circuit switching valve. It enters the pump suction side of the heat radiating circuit pipe 121 via 134 and the fourth switching connection pipe 139, and transfers heat to the heat medium in the heat pump unit 110 by the evaporator 118 of the heat pump unit 110 to about 7 to 25 degrees Celsius. Returning to the low temperature state, the heat medium in the heat pump unit 110 is heated by heat transfer, and then heated by the compression pump 116, and the condenser 114 performs heat exchange with the heat medium in the heat absorption circuit pipe 125 to thereby absorb the heat absorption circuit pipe 125. The heating medium is set to about 25 to 35 degrees, and this heating medium is sent to the underground heat exchange pipe 141 via the third switching connection pipe 138 via the hot water tank circuit switching valve 135 and the third circuit switching valve 133. To dissipate heat into the ground. .

  In this case, as shown in FIG. 5, first, a hot water supply operation is performed in which hot water of a predetermined temperature is stored in the hot water tank 170, and the heat in the heat absorption circuit pipe 125 of the heat pump unit 110 is used using the heat medium of the solar heat collector 180. When the water temperature in the hot water tank 170 is lower than the medium temperature, the heat absorption circuit pipe 125 of the heat pump unit 110 is connected to the hot water tank circuit pipe 171 so that the water in the hot water tank 170 is heated and the temperature of the heat medium tank 150 is low. After the temperature of the hot water tank 170 reaches the heat medium temperature of the endothermic circuit pipe 125, the second circuit switching valve 132 and the hot water tank circuit switching valve 135 are controlled as shown in FIG. The cooling circuit is operated by switching the connection circuit. At the same time, when the temperature of the solar heat collector 180 is higher than the temperature of the hot water tank 170, tap water in the hot water tank 170 is added by the heat medium from the solar heat collector 180. Warm up the electricity from the solar generator 190 to the auxiliary heater 176 as appropriate It is intended to raise the temperature of the hot water tank 170 up to 90 degrees in electric.

  When the hot water in the hot water tank 170 is heated by the heat medium from the solar heat collector 180 or the auxiliary heater 176, and the water temperature in the hot water tank 170 becomes higher than the heat medium temperature in the heat absorption circuit pipe 125. Alternatively, when the temperature of the heat medium in the endothermic circuit pipe 125 is maintained higher than the temperature of the heat medium, the hot water tank circuit pipe 171 is closed by the hot water tank circuit switching valve 135.

  In this way, the solar water collector 180 is used to heat the tap water in the hot water tank 170 and to store the high-temperature or low-temperature heat medium in the heat medium tank 150, and heating is given priority to the hot water supply operation. During the cooling operation, the heating medium heated by the solar heat collector 180 is sent only to the hot water tank 170 to use solar heat, and the auxiliary heater 176 is used using the power of the solar power generator 190. Heating of clean water by means of

  In addition, since the upper part of the heat medium tank 150 has a high temperature and the bottom part has two layers of low temperature, the low temperature heat medium flows into the heat medium tank 150 from the lower part of the heat medium tank 150, and the high temperature heat medium is heated. By flowing into the heat medium tank 150 from the upper part of the medium tank 150, cold heat is taken from the lower part of the heat medium tank 150 into the heat medium tank 150 and the heat is efficiently stored by storing it in the heat medium tank 150. It can be carried out.

  Therefore, a high-temperature heat medium sent from the heat pump unit 110 during heating is injected into the upper part of the heat medium tank 150 from the heat medium circulation connection upper pipe 151, and is radiated by the heat absorption / dissipation panel 165 via the air conditioning connection upper pipe 153. When the reduced heat medium is returned from the cooling / heating connection lower pipe 154 to the heat medium tank 150, it is possible to suppress the stirring of the heat medium in the heat medium tank 150, and during cooling, the heat pump unit 110 The low-temperature heat medium sent from the heat medium is connected to the lower part of the heat medium tank 150 from the heat medium circulation connection lower pipe 152, and the heat medium whose temperature has risen by absorbing heat with the heat absorption / dissipation panel 165 via the air conditioning connection lower pipe 154 is connected to the air conditioning When returning from the upper pipe 153 to the heat medium tank 150, stirring of the heat medium in the heat medium tank 150 can be suppressed.

  The geothermal heat pump system includes a solar power generator 190. When the weather is good, the operation of the heat pump unit 110 with the power generated by the solar power generator 190, the first heat medium pump 123 and the first heat pump In addition to the operation of the two heat medium pumps 127, the driving pumps such as the cooling / heating pump 163, the hot water preheating pump 182 and the heat medium preheating pump 186 are operated and used for the electric power of each lighting fixture in the house.

  In addition, the embodiment shown in the drawings is a heat pump system that uses a geothermal heat installed in an insulated house, but the heat pump system that uses a geothermal heat is not only installed in a house, It can be installed as indoor air conditioning equipment and hot water supply equipment in buildings such as greenhouses for agriculture and greenhouses for plant cultivation.

  In addition, heat exchange pipes, which are the underground heat exchange pipes of this geothermal heat pump system, are installed in rivers and lakes without being buried in the ground, and natural heat energy such as water is used instead of underground heat. By using the heat pump system using water heat, the installation can be facilitated depending on the terrain, and the indoor air conditioning and hot water supply of a house or building can be easily and inexpensively performed.

DESCRIPTION OF SYMBOLS 100 Thermal insulation house 110 Heat pump unit 112 Expansion valve 114 Condenser 116 Compression pump 118 Evaporator 121 Radiation circuit pipe 123 1st heat medium pump 125 Endothermic circuit pipe 127 2nd heat medium pump 131 1st circuit switching valve 132 2nd circuit switching valve 133 Third circuit switching valve 134 Fourth circuit switching valve 135 Hot water tank circuit switching valve 136 First switching connection pipe 137 Second switching connection pipe 138 Third switching connection pipe 139 Fourth switching connection pipe 141 Ground heat exchange pipe 142 Front end portion 145 Tank circulation circuit first pipe 146 Tank circulation circuit second pipe 150 Heat medium tank 151 Heat medium circulation connection upper pipe 152 Heat medium circulation connection lower pipe 153 Air conditioning connection upper pipe 154 Air conditioning connection lower pipe 56 1st cooling / heating switching valve 157 2nd cooling / heating switching valve 158 3rd cooling / heating switching valve 159 4th cooling / heating switching valve 161 Air-conditioning / circulation forward pipe 162 162 Air-conditioning / circulation return pipe 163 Air-conditioning / heating pump 165 Heat absorption / dissipation panel 166 Thermo valve 170 Hot water tank 171 Temperature Water tank circuit pipe 172 Heat exchanger 173 Water supply port 174 Water supply pipe 175 Water supply valve 176 Auxiliary heater 177 Hot water supply pipe 179 Hot water supply port 180 Solar heat collector 181 Hot water preheating circuit 182 Hot water preheating pump 183 Heat exchanger 185 Heat medium preheating circuit 186 Heat Medium preheat pump 187 Heat exchanger 190 Solar power generator

Claims (9)

A pipe buried in the ground and through which a heat medium passes, a heat pump unit, a tank circulation circuit for circulating the heat medium in the heat medium tank to the heat pump unit, and tap water A hot water tank to be stored, a hot water tank circuit that circulates the heat medium heated at the heat pump unit back to the heat pump unit via a heat exchanger in the hot water tank, and a heat medium in the heat medium tank Is taken out from the upper part of the heat medium tank and returned to the lower part of the heat medium tank through the heat absorption / radiation panel, or the heat medium in the heat medium tank is taken out from the lower part of the heat medium tank and the heat absorption tank through the heat absorption / radiation panel. An air-conditioning circuit that returns to the top of the heat transfer tank,
When the underground heat exchange pipe is connected to a heat dissipation circuit pipe that radiates heat in the heat pump unit, and the heat absorption circuit pipe that receives heat transfer from a high-temperature heat medium in the heat pump unit is connected to the tank circulation circuit, the heat The lower heat medium in the medium tank is sent to the heat pump unit, the heat medium is returned to the upper part of the heat medium tank to warm the heat medium in the heat medium tank, and the underground heat exchange pipe is connected to the heat absorption circuit pipe. When connecting the heat dissipation circuit pipe to the tank circulation circuit, the heat medium in the upper part of the heat medium tank is sent to the heat pump unit, the heat medium is returned to the lower part of the heat medium tank, and the heat medium in the heat medium tank A heat pump system using geothermal heat, comprising a heat pump unit that lowers the temperature.   2. The ground according to claim 1, wherein a tip end portion of the underground heat exchange pipe in the underground heat utilization heat pump system is buried in the ground at a depth of about 50 to 100 meters underground. Medium heat heat pump system.   The geothermal heat pump system further includes a solar heat collector, which heats the tap water in the hot water tank with the heat medium heated by the solar heat collector and also adds the heat medium in the heat medium tank. The heat pump system using geothermal heat according to claim 1 or 2, wherein the heat can be heated.   The geothermal heat pump system according to any one of claims 1 to 3, wherein the hot water tank in the geothermal heat pump system includes an auxiliary heater that can be energized.   The underground medium according to any one of claims 1 to 4, wherein the heat medium in the heat absorption pipe of the heat pump unit in the heat pump system using underground heat is heated to a temperature of about 60 degrees Celsius. Heat-use heat pump system.   The ground heat utilization heat pump system further includes a solar power generator, and enables driving of a drive pump that circulates the heat pump unit and the heat medium by electric power of the solar power generator. The heat pump system using geothermal heat according to claim 5. Pipes installed in rivers and lakes, heat exchange pipes for passing heat medium inside, heat pump units, tank circulation circuit for circulating the heat medium in the heat medium tank to the heat pump unit, and storing tap water A hot water tank, a hot water tank circuit that circulates the heat medium heated in the heat pump unit so as to return to the heat pump unit via a heat exchanger in the hot water tank, and a heat medium in the heat medium tank. Take out from the upper part of the heat medium tank and return to the lower part of the heat medium tank through the heat absorbing / dissipating panel, or take out the heat medium in the heat medium tank from the lower part of the heat medium tank and pass through the heat absorbing and radiating panel. A heating and cooling circuit that returns to the top of the tank,
When the heat exchange pipe is connected to a heat radiating circuit pipe that radiates heat in the heat pump unit, and a heat absorbing circuit pipe that receives heat transfer from a high-temperature heat medium in the heat pump unit is connected to the tank circulation circuit, the heat medium tank The heat medium in the lower part is sent to the heat pump unit, the heat medium is returned to the upper part of the heat medium tank to warm the heat medium in the heat medium tank, the heat exchange pipe is connected to the heat absorption circuit pipe, and the heat dissipation circuit When connecting the pipe to the tank circulation circuit, the heat medium in the upper part of the heat medium tank is sent to the heat pump unit, the heat medium is returned to the lower part of the heat medium tank, and the heat medium in the heat medium tank is lowered. A water-based heat pump system comprising a heat pump unit.   The water heat utilization heat pump system further includes a solar heat collector, which heats the tap water in the hot water tank with the heat medium heated by the solar heat collector and also heats the heat medium in the heat medium tank. The heat pump system using water heat according to claim 7, which is made possible.   The water heat-use heat pump system according to claim 7 or 8, wherein the heat medium in the heat absorption pipe of the heat pump unit in the water heat-use heat pump system is heated to a temperature of about 60 degrees Celsius.

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