JP6089669B2 - Hot water system - Google Patents

Description

  The present invention relates to a hot water supply system.

  Conventional heat pump hot water supply systems use inexpensive late-night power to boil hot water at night, convert electrical energy into heat energy, and store energy as hot water in a hot water storage tank. However, since the hot water is boiled at night on the previous day, it is necessary to store more heat energy than necessary in the hot water storage tank, considering that the temperature drops before use on the day. Moreover, the cold exhaust heat exhausted by the heat pump when boiling hot water is discharged as it is.

  Thus, recently, a heat pump hot water supply system that includes a storage battery and that can store not only the electric energy as heat energy but also the electric energy as it is in the storage battery is used. In such a heat pump hot water supply system, electrical energy can be taken out from the storage battery when necessary, so there is no need to store unnecessary energy as heat energy, which not only reduces the amount of power used but also facilitates the reuse of stored energy. In addition, energy efficiency can be improved at the same time. For example, Patent Document 1 (Japanese Patent Laid-Open No. 2010-145072) describes an energy storage type heat pump water heater provided with a secondary battery as a power storage means.

  By the way, the current storage battery has a narrow operating temperature range, and the battery capacity deteriorates as the temperature rises. Therefore, maintaining a constant temperature is an important condition for extending the life of the storage battery. Therefore, for example, Patent Document 1 proposes that the hot water storage tank and the secondary battery are housed in the same space, thereby heating the secondary battery and adjusting the temperature.

  However, in the hot water supply system described in Patent Document 1, the secondary battery is not directly warmed by the heat of the hot water storage tank accommodated in the same space, but via the air heated by the heat of the hot water storage tank. And warmed up. That is, since air with a small amount of heat is interposed between the secondary battery and the hot water storage tank, the temperature adjustment effect of the secondary battery is poor. For this reason, in the system described in Patent Document 1, it is necessary to use a fan to convect the air.

  This invention is made | formed in view of the above-mentioned point, The subject of this invention provides the hot water supply system which can perform the temperature control of a storage battery effectively using the cold / heat which a hot water supply system produces | generates. There is.

The hot water supply system according to the first aspect includes a heat pump, a hot water storage tank , a storage battery , a first temperature adjustment unit, a first unheated water circuit, and a second temperature adjustment unit . The heat pump includes a compressor, a radiator, an expansion mechanism, and an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water storage tank is supplied with unheated water below, and stores hot water generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top. The storage battery stores at least the electric power used by the heat pump. The first temperature control unit is disposed so as to be in thermal contact with at least a part of the storage battery, and after the refrigerant circuit has passed through the radiator and before being sucked into the compressor, The temperature of the storage battery is adjusted using heat directly or indirectly. The first unheated water circuit is configured to circulate unheated water below the hot water storage tank. A 2nd temperature control part adjusts the temperature of a storage battery using the heat of the water which flows through a 1st unheated water circuit. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The first temperature control unit is configured to circulate a temperature control medium that performs heat exchange with the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor. An indirect temperature control circuit which is a circuit independent of the circuit is included.

  Here, the temperature control medium flowing through the indirect temperature control circuit may be the same water as the water flowing through the first unheated water circuit, or may be a heat medium other than water.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, the temperature of the storage battery is also adjusted by a first temperature adjustment unit installed so as to be in thermal contact with the storage battery. For this reason, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

  Further, in this hot water supply system, the first temperature adjusting unit for adjusting the temperature using the heat of the temperature adjusting medium flowing through the indirect temperature adjusting circuit, and the heat of unheated water flowing through the first unheated water circuit are used. By using both of the second temperature control units that perform temperature control, it becomes easy to expand the temperature control range of the storage battery.

  The hot water supply system according to the second aspect is the hot water supply system according to the first aspect, and the temperature adjustment medium is a heat medium other than water.

  In this hot water supply system, a heat medium different from unheated water flowing through the first unheated water circuit is used in an indirect temperature control circuit used for temperature control of the storage battery. This makes it possible to adjust the temperature of the storage battery using media having different heat capacities. For this reason, for example, it becomes possible to design so that the difference in the circulation amount between the indirect temperature control circuit and the first unheated water circuit becomes large, or to design the piping to have different inner diameters. It becomes possible to increase the degree of freedom.

A hot water supply system according to a third aspect includes a heat pump, a hot water storage tank , a storage battery , and a first temperature adjustment unit . The heat pump includes a compressor, a radiator, an expansion mechanism, and an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water storage tank is supplied with unheated water below, and stores hot water generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top. The storage battery stores at least the electric power used by the heat pump. The first temperature control unit is disposed so as to be in thermal contact with at least a part of the storage battery, and after the refrigerant circuit has passed through the radiator and before being sucked into the compressor, The temperature of the storage battery is adjusted using heat directly or indirectly. The upper part of the storage battery is in thermal contact with the lower part of the hot water storage tank. The lower part of the storage battery is in thermal contact with the first temperature control unit.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, the temperature of the storage battery is also adjusted by a first temperature adjustment unit installed so as to be in thermal contact with the storage battery. For this reason, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

  In this hot water supply system, the storage battery is sandwiched between the lower part of the hot water storage tank and the first temperature control unit. As a result, the storage battery has a larger heat transfer area not only in the upper part but also in the lower part, and it is easier to adjust the temperature.

A hot water supply system according to a fourth aspect includes a heat pump, a hot water storage tank , a storage battery , and a first temperature adjustment unit . The heat pump includes a compressor, a radiator, an expansion mechanism, and an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water storage tank is supplied with unheated water below, and stores hot water generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top. The storage battery stores at least the electric power used by the heat pump. The first temperature control unit is disposed so as to be in thermal contact with at least a part of the storage battery, and after the refrigerant circuit has passed through the radiator and before being sucked into the compressor, The temperature of the storage battery is adjusted using heat directly or indirectly. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The heat pump further includes an inverter. The switching element of the inverter is installed so as to be in thermal contact with the first temperature adjustment unit.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, the temperature of the storage battery is also adjusted by a first temperature adjustment unit installed so as to be in thermal contact with the storage battery. For this reason, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

  Further, in this hot water supply system, the first temperature adjustment unit can adjust the temperature of not only the storage battery but also the switching element of the inverter.

The hot water supply system according to the fifth aspect is the hot water supply system according to the fourth aspect , and the inverter is disposed below the first temperature adjustment unit.

  In this hot water supply system, the hot water storage tank, the storage battery, and the inverter can be arranged side by side in the vertical direction. For this reason, the installation space of a horizontal direction can be narrowed.

A hot water supply system according to a sixth aspect includes a heat pump, a hot water storage tank , a storage battery , a first temperature adjustment unit, and a converter . The heat pump includes a compressor, a radiator, an expansion mechanism, and an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water storage tank is supplied with unheated water below, and stores hot water generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top. The storage battery stores at least the electric power used by the heat pump. The first temperature control unit is disposed so as to be in thermal contact with at least a part of the storage battery, and after the refrigerant circuit has passed through the radiator and before being sucked into the compressor, The temperature of the storage battery is adjusted using heat directly or indirectly. The converter controls charging and discharging of the storage battery. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The switching element of the converter is installed so as to be in thermal contact with the first temperature adjustment unit.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, the temperature of the storage battery is also adjusted by a first temperature adjustment unit installed so as to be in thermal contact with the storage battery. For this reason, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

  Further, in this hot water supply system, the first temperature adjusting unit can adjust the temperature of not only the storage battery but also the switching element of the converter.

A hot water supply system according to a seventh aspect is the hot water supply system according to the sixth aspect , and the converter is disposed below the first temperature adjustment unit.

  In this hot water supply system, the hot water storage tank, the storage battery, and the converter can be arranged in the vertical direction. For this reason, the installation space of a horizontal direction can be narrowed.

The hot water supply system according to the eighth aspect includes a heat pump, a hot water storage tank , a storage battery , a second unheated water circuit, and a third temperature adjustment unit . The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. The second unheated water circuit is configured to circulate unheated water below the hot water storage tank. A 3rd temperature control part adjusts the temperature of a storage battery using the heat of the water which flows through a 2nd unheated water circuit. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, the temperature of the storage battery is adjusted by circulating unheated water in the lower part of the hot water storage tank between the parts for adjusting the temperature of the storage battery. For this reason, even if it is a case where a part of storage battery is not arrange | positioned so that the lower part of a hot water storage tank may be contacted, it is possible to adjust the temperature of a storage battery.

A hot water supply system according to a ninth aspect is the hot water supply system according to the eighth aspect , wherein the heat pump includes a compressor, a radiator, an expansion mechanism, an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water stored above the hot water storage tank is generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit. The refrigerant circuit has a direct temperature control circuit. The direct temperature control circuit is a circuit independent of the second unheated water circuit, and the heat of the storage battery and the heat is transferred so that the heat of the refrigerant after passing through the radiator and before being sucked into the compressor is transmitted to the storage battery. To adjust the temperature of the storage battery.

  In this hot water supply system, a direct temperature adjustment circuit that performs temperature adjustment using the heat of the refrigerant flowing through the refrigerant circuit, and a third temperature that performs temperature adjustment using the heat of unheated water flowing through the second unheated water circuit. By using both of the adjustment units, the temperature adjustment range of the storage battery can be easily expanded. Moreover, in the direct temperature control circuit, the refrigerant | coolant which is a heat medium different from the unheated water which flows through a 2nd unheated water circuit is circulating. This makes it possible to adjust the temperature of the storage battery using media having different heat capacities such as water and refrigerant. For this reason, for example, it is possible to design so that the difference in the circulation amount between the direct temperature control circuit and the second unheated water circuit is large, or to design the piping to have different inner diameters. It becomes possible to increase the degree of freedom.

The hot water supply system according to the tenth aspect is the hot water supply system according to the eighth aspect , and the third temperature adjustment unit is disposed below the hot water storage tank. The upper part of the storage battery is in thermal contact with the third temperature controller.

  In this hot water supply system, the storage battery is disposed below so that the upper part of the storage battery is in thermal contact with the third temperature adjustment unit. Here, the storage battery is an article that is heavier than the third temperature control unit, and the storage battery, which is such a heavy object, is arranged at a lower position, thereby improving the stability of the arrangement of other configurations. (Anchor effect is obtained).

A hot water supply system according to an eleventh aspect includes a heat pump, a hot water storage tank , a storage battery , a third unheated water circuit, and a fourth temperature adjustment unit . The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. The third unheated water circuit is configured to circulate unheated water below the hot water storage tank. A 4th temperature control part adjusts the temperature of a storage battery using the heat of the water which flows through a 3rd unheated water circuit. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The heat pump further includes an inverter. The switching element of the inverter is arranged so as to be in thermal contact with the lower part of the hot water storage tank and also in thermal contact with the upper part of the fourth temperature adjusting unit. The upper part of the storage battery is disposed so as to be in thermal contact with the lower part of the fourth temperature adjusting unit.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  In this hot water supply system, the switching element of the inverter is arranged below the lower part of the hot water storage tank and above the fourth temperature adjusting unit, so that temperature adjustment from both is possible. In addition, the storage battery, which is an article that is heavier than the fourth temperature control unit, can be arranged at a lower position to improve the stability of the arrangement of other components (anchor effect). Is obtained.)

A hot water supply system according to a twelfth aspect includes a heat pump, a hot water storage tank , a storage battery , a fourth unheated water circuit, a fifth temperature adjustment unit, and a converter . The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. The fourth unheated water circuit is configured to circulate unheated water below the hot water storage tank. A 5th temperature control part adjusts the temperature of a storage battery using the heat of the water which flows through a 4th unheated water circuit. The converter controls charging and discharging of the storage battery. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The switching element of the converter is arranged so as to be in thermal contact with the lower part of the hot water storage tank and also in thermal contact with the upper part of the fifth temperature adjusting unit. The upper part of the storage battery is disposed so as to be in thermal contact with the lower part of the fifth temperature adjustment unit.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Further, in this hot water supply system, the switching element of the converter is disposed below the lower portion of the hot water storage tank and above the fifth temperature adjusting unit, so that temperature adjustment from both is possible. In addition, the storage battery, which is an article that is heavier than the fifth temperature control unit, can be arranged at a lower position to improve the stability of the arrangement of other components (anchor effect). Is obtained.)

A hot water supply system according to a thirteenth aspect includes a heat pump, a hot water storage tank , a storage battery , and a solar power generation panel . The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. The solar power generation panel is installed so as to cover the hot water storage tank and the storage battery, and receives sunlight to generate power. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. The storage battery is charged with electric energy obtained by the photovoltaic power generation panel generating power.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, since the circumference | surroundings of a storage battery are covered with the solar power generation panel, it can prevent that it heats up when a storage battery is exposed to sunlight. Furthermore, the electric power generated by the solar power generation panel can be stored in the storage battery.

A hot water supply system according to a fourteenth aspect includes a heat pump, a hot water storage tank , a storage battery , and a solar power generation panel . The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. The solar power generation panel is installed so as to cover the hot water storage tank and the storage battery, and receives sunlight to generate power. At least a part of the storage battery is disposed so as to be in thermal contact with the lower part of the hot water storage tank. For driving the heat pump, electric energy obtained by the power generation by the photovoltaic power generation panel is used.

  In this hot water supply system, at least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank. Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. At least a part of the storage battery is in thermal contact with the lower part of the hot water storage tank. For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other via air, but are in direct thermal contact with each other, so that a blowing means such as a fan for generating air convection is provided. Even if it is not, temperature control of the storage battery can be performed efficiently.

  Moreover, in this hot water supply system, since the circumference | surroundings of a storage battery are covered with the solar power generation panel, it can prevent that it heats up when a storage battery is exposed to sunlight. Furthermore, the electric power generated by the solar power generation panel can be used for driving the heat pump.

A hot water supply system according to a fifteenth aspect includes a heat pump, a hot water storage tank, and a storage battery. The hot water storage tank is supplied with unheated water below and stores hot water heated by a heat pump at the top. The storage battery stores at least the electric power used by the heat pump. A storage battery via a heat conducting member in which at least a part of the storage battery is in direct contact with the lower part of the hot water storage tank or in direct contact with at least a part of the storage battery and the lower part of the hot water storage tank At least a portion of which is in indirect contact with the lower portion of the hot water storage tank.

In this hot water supply system, at least a part of the storage battery is arranged so as to be in contact with the lower part of the hot water storage tank directly or via a heat conducting member . Unheated water is supplied to the lower part of the hot water tank, and the lower part of the hot water tank is easily maintained at a low temperature. And at least one part of a storage battery is contacting the lower part of the hot water storage tank directly or through the heat conductive member . For this reason, it is possible to adjust the temperature of the storage battery to a temperature near the temperature of the lower part of the hot water storage tank. Here, the storage battery and the lower part of the hot water storage tank are not in contact with each other through air, but are in contact directly or through a heat conducting member, so that a fan or the like for causing convection of air is used. Even in the case where no blowing means is provided, the temperature of the storage battery can be adjusted efficiently.

Moreover, in this hot water supply system, the lower part of the hot water storage tank and the storage battery are in direct contact with each other or indirectly in contact with each other through a heat conducting member. Thereby, the heat transfer efficiency between the lower part of a hot water storage tank and a storage battery can be improved.

A hot water supply system according to a sixteenth aspect is the hot water supply system according to the fifteenth aspect , further comprising a first temperature adjustment unit. The heat pump includes a compressor, a radiator, an expansion mechanism, and an evaporator, and a refrigerant circuit in which the refrigerant circulates. The hot water stored above the hot water storage tank is generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit. The first temperature adjustment unit is disposed so as to be in thermal contact with at least a part of the storage battery. This 1st temperature control part adjusts the temperature of a storage battery directly or indirectly using the heat | fever of the refrigerant | coolant after passing a heat radiator in a refrigerant circuit and before being suck | inhaled by the compressor.

  In this hot water supply system, the temperature of the storage battery is also adjusted by the first temperature adjustment unit installed so as to be in thermal contact with the storage battery. For this reason, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

In the hot water supply system according to the first aspect , the temperature of the storage battery can be adjusted efficiently, the temperature of the storage battery can be easily adjusted to an appropriate temperature, and the temperature adjustment range of the storage battery can be easily expanded.

In the hot water supply system according to the second aspect, the temperature of the storage battery can be adjusted using media having different heat capacities.

In the hot water supply system according to the third aspect , the temperature of the storage battery can be adjusted efficiently, and the temperature of the storage battery can be further easily adjusted to an appropriate temperature .

In the hot water supply system according to the fourth aspect , the temperature of the storage battery can be adjusted efficiently, the temperature of the storage battery can be easily adjusted to an appropriate temperature, and the first temperature adjustment unit is not only a storage battery but also an inverter switching element. It is possible to adjust the temperature.

In the hot water supply system according to the fifth aspect , the horizontal installation space can be reduced.

In the hot water supply system according to the sixth aspect , the temperature of the storage battery can be adjusted efficiently, the temperature of the storage battery can be easily adjusted to an appropriate temperature, and the first temperature adjustment unit is not only a storage battery but also a switching element of a converter It is possible to adjust the temperature.

In the hot water supply system according to the seventh aspect , the horizontal installation space can be reduced.

In the hot water supply system according to the eighth aspect , the temperature of the storage battery can be adjusted efficiently, and the temperature of the storage battery can be adjusted even when a part of the storage battery is not placed in contact with the lower part of the hot water storage tank. It is possible to adjust.

In the hot water supply system according to the ninth aspect , the temperature adjustment range of the storage battery can be easily expanded, and the temperature of the storage battery can be adjusted using media having different heat capacities.

In the hot water supply system according to the tenth aspect , the stability of the arrangement can be improved.

In the hot water supply system according to the eleventh aspect , the temperature of the storage battery can be adjusted efficiently, the temperature of the switching element of the inverter can be easily adjusted, and the stability of the arrangement can be improved.

In the hot water supply system according to the twelfth aspect , the temperature of the storage battery can be adjusted efficiently, the temperature of the switching element of the converter can be easily adjusted, and the stability of the arrangement can be improved.

In the hot water supply system according to the thirteenth aspect , the temperature of the storage battery can be adjusted efficiently, and the electric power obtained by using the solar panel for preventing the storage battery from being heated by being exposed to sunlight. Can be stored in a storage battery.

In the hot water supply system according to the fourteenth aspect , the temperature of the storage battery can be adjusted efficiently, and the power obtained by using a solar panel for preventing the storage battery from being heated by being exposed to sunlight. Can be used to drive the heat pump.

  In the hot water supply system according to the fifteenth aspect, the temperature of the storage battery can be adjusted efficiently.

In the hot water supply system according to the sixteenth aspect, it is easy to adjust the temperature of the storage battery to an appropriate temperature.

1 is a schematic external view of a hot water supply system according to a first embodiment. It is a schematic block diagram of the hot water supply system which concerns on 1st Embodiment. It is a Mollier diagram of the refrigerant circuit concerning a 1st embodiment. It is a schematic block diagram of the hot water supply system which concerns on 2nd Embodiment. It is a Mollier diagram of the refrigerant circuit concerning a 2nd embodiment. It is a schematic block diagram of the hot water supply system which concerns on the modification 2A of 2nd Embodiment. It is a Mollier diagram of a refrigerant circuit concerning modification 2B of a 2nd embodiment. It is a schematic block diagram of the hot water supply system which concerns on the modification 2B of 2nd Embodiment. It is a Mollier diagram of a refrigerant circuit concerning modification 2B of a 2nd embodiment. It is a schematic block diagram of the hot water supply system which concerns on 3rd Embodiment. It is a Mollier diagram of the refrigerant circuit concerning a 3rd embodiment. It is a schematic block diagram of the hot water supply system which concerns on 4th Embodiment. It is the Mollier diagram of the refrigerant circuit which concerns on 4th Embodiment. It is a schematic block diagram of the hot water supply system which concerns on 5th Embodiment. It is the Mollier diagram of the refrigerant circuit which concerns on 5th Embodiment. It is a schematic block diagram of the hot water supply system which concerns on 6th Embodiment. It is a schematic block diagram of the hot water supply system which concerns on 7th Embodiment. It is a schematic block diagram of the hot water storage unit which concerns on 8th Embodiment. It is a schematic block diagram of the hot water storage unit which concerns on 9th Embodiment. It is a schematic block diagram of the hot water storage unit which concerns on other embodiment A. It is a schematic block diagram of the hot water storage unit which concerns on other Embodiment B. It is a schematic external view of the hot water supply system according to another embodiment C. It is a schematic external view of a part of a hot water supply system according to another embodiment F.

  Hereinafter, the hot water supply system of each embodiment will be described.

(1) 1st Embodiment The hot water supply system 100 which concerns on 1st Embodiment is demonstrated using drawing.

  FIG. 1 is a schematic external view of a hot water supply system 100 according to the first embodiment of the present invention. In FIG. 2, the schematic block diagram of the hot water supply system 100 is shown.

(2) Overall configuration The hot water supply system 100 is a hot water storage hot water supply system for storing hot water in advance or heating the hot water in the bathtub before use, and includes a heat pump unit 1, a hot water storage unit 3, and A temperature control circuit 40 is provided. In addition, the hot water supply system 100 includes a control unit (not shown) including a microcomputer that manages and controls the heat pump unit 1 and the hot water storage unit 3.

(3) Detailed configuration (3-1) Heat pump unit 1
The heat pump unit 1 functions as a heat source device for producing hot water, and uses electric power as a power source. The heat pump unit 1 includes a casing 1a, and the casing 1a includes a refrigerant circuit 20, in which a refrigerant circulates, a water heat exchanger 22, an air heat exchange fan 24F, and various sensors.

  The refrigerant circuit 20 functions as a heat pump, and mainly includes a compressor 21, a refrigerant pipe 22 r in the water heat exchanger 22, an expansion valve 23, an air heat exchanger 24, and a refrigerant pipe 25.

  The refrigerant pipe 25 connects the devices in the order of the discharge side of the compressor 21, the refrigerant pipe 22r in the water heat exchanger 22, the expansion valve 23, the air heat exchanger 24, and the suction side of the compressor 21, A refrigerant is circulated inside. Although not particularly limited, in the present embodiment, the carbon dioxide refrigerant is used so as to temporarily enter a supercritical state in the refrigeration cycle.

  Here, the compressor 21 sucks gaseous low-pressure refrigerant, compresses it to high pressure, and discharges it.

  The water heat exchanger 22 serves as a radiator that radiates heat of the refrigerant. The water heat exchanger 22 has a refrigerant pipe 22r and a water pipe 32w. The water heat exchanger 22 exchanges heat between the high-temperature refrigerant flowing through the refrigerant pipe 22r after being discharged by the compressor 21 of the heat pump unit 1 and the water flowing through the water pipe 32w when circulating through the hot water storage unit 3 described later. Let it be done. By the heat exchange in the water heat exchanger 22, the refrigerant passing through the refrigerant pipe 22r is cooled, and at the same time, the water passing through the water pipe 32w is heated to produce hot water (hot water). Here, the hot water is water in which city water supplied to the hot water storage tank 35 to be described later is heated and means water having a temperature at least 1 ° C. higher than the temperature of the city water.

  The expansion valve 23 reduces the pressure of the refrigerant when passing the refrigerant that has radiated heat through the refrigerant pipe 22 r of the water heat exchanger 22.

  The air heat exchanger 24 functions as an evaporator that heats and evaporates the refrigerant. In the air heat exchanger 24, heat exchange is performed between the refrigerant and the air. Air for heat exchange is supplied toward the air heat exchanger 24 by the air heat exchange fan 24F. The air heat exchanger fan 24F is controlled by the control unit.

(3-2) Hot water storage unit 3
The hot water storage unit 3 heats and stores the water supplied via the external water supply path 81 and the tank water supply path 82 from outside such as city water by the heat obtained from the heat pump unit 1, and stores the water supply path 83 for mixing while storing it. It is an apparatus for supplying warm water mixed through the bathroom. The hot water storage unit 3 includes a casing 3a, and the casing 3a mainly includes a hot water storage tank 35, a hot water storage circuit 30, a storage battery 71, an inverter 73, a converter 74, a switching element storage portion 72, and a temperature adjustment jacket 48. Etc.

(3-2-1) Hot water storage tank 35
The hot water storage tank 35 is a tank that stores hot water obtained by heat obtained from the heat pump unit 1 in advance.

  The hot water storage tank 35 is always filled with water and / or hot water, and a hot water temperature detection sensor 36 is provided for allowing the controller to grasp the amount of hot water. This hot water temperature detection sensor 36 includes a first hot water volume detection temperature sensor T1 to a sixth hot water volume detection temperature sensor T6. The first hot water amount detection temperature sensor T1 to the sixth hot water amount detection temperature sensor T6 are arranged at predetermined intervals in order from the lower side of the hot water storage tank 35 to the upper side.

  The temperature distribution of the hot water in the hot water storage tank 35 is such that the temperature decreases as the temperature decreases from the upper end to the lower end. This is because warm water having a low temperature sinks downward due to its large specific gravity, and warm water having a high temperature tends to increase due to its small specific gravity. At the lower end of the hot water storage tank 35, as will be described later, unheated water is introduced as city water, so the temperature is the lowest in the hot water storage tank 35.

  A tank water supply path 82 is connected to the vicinity of the lower end of the hot water storage tank 35. Water from the outside such as city water is supplied into the hot water storage tank 35 via the external water supply channel 81 and the tank water supply channel 82. A hot water discharge pipe 51 is connected near the upper end of the hot water storage tank 35. Hot water supplied via the hot water outlet 51 and water from the outside such as city water supplied via the mixing water supply channel 83 are mixed by the hot water mixing valve 84. The hot water thus mixed is supplied to the bathroom or the like via the hot water supply pipe 52.

  Although not shown, the hot water storage tank 35 is covered with a heat insulating material formed of foamed polystyrene, foamed polyethylene or the like, except for the lower end, so that the heat in the hot water storage tank 35 is difficult to escape. .

(3-2-2) Hot water storage circuit 30
The hot water storage circuit 30 is a circuit for transmitting heat obtained by the heat pump unit 1 to the water or hot water in the hot water storage tank 35, and is a boiling pipe 31, a water pipe 32 w in the water heat exchanger 22, and a boiling return. It has a pipe 33 and a boiling pump 34.

  The boiling forward pipe 31 connects the vicinity of the lower end portion of the hot water storage tank 35 and the upstream end portion of the water pipe 32 w in the water heat exchanger 22.

  The boiling return pipe 33 connects the downstream end of the water pipe 32 w in the water heat exchanger 22 and the vicinity of the upper end of the hot water storage tank 35.

  The boiling pump 34 is provided in the middle of the boiling forward pipe 31. In the hot water storage circuit 30, the boiling pump 34 is driven in response to a command from the control unit, whereby the water in the hot water storage tank 35 or the hot water present at the lower temperature is heated to the boiling pipe 31. The temperature is raised by passing through the water pipe 32 w in the water heat exchanger 22, and returned to the vicinity of the upper end of the hot water storage tank 35 via the boiling return pipe 33.

  As a result, the boundary between the hot water and the water in the hot water storage tank 35 moves from top to bottom, and the amount of hot water in the hot water storage tank 35 increases.

(3-2-3) Storage battery 71
The storage battery 71 is a battery that stores electricity used by the hot water supply system 100, and is installed under the hot water storage tank 35 in a state of being in thermal contact with the lower end of the hot water storage tank 35. The storage battery 71 is charged at night when the electricity rate is relatively inexpensive, and the charged electricity is used for the operation of the hot water supply system 100 during the day. The storage battery 71 is a lithium ion battery in this embodiment. The storage battery 71 has a built-in temperature sensor 71 a that detects the internal temperature of the storage battery 71. The control unit can grasp the detection value of the temperature sensor 71a.

  Here, the upper surface of the storage battery 71 is in thermal contact with the lower surface of the hot water storage tank 35. The state of being in thermal contact includes both the state of being in direct contact and the case of being in indirect contact with another member interposed therebetween (the same applies hereinafter). In the present embodiment, the lower end of the hot water storage tank 35 and the upper surface of the storage battery 71 are in direct contact.

  Current storage batteries have restrictions on the temperature range in which they can operate properly, and the battery capacity deteriorates as the temperature rises. Therefore, the conditions of the battery installation location are severe, and it is important to maintain a constant temperature in order to extend the service life. It becomes a condition.

  On the other hand, since water from city water is introduced near the lower end of the hot water storage tank 35, unheated water exists, and the temperature of city water is relatively stable throughout the year.

  Therefore, by arranging the storage battery 71 under the hot water storage tank 35 so as to be in thermal contact with the lower end of the hot water storage tank 35, the temperature of the storage battery 71 is maintained relatively stably throughout the year. It is possible.

(3-2-4) Temperature control jacket 48
The temperature adjustment jacket 48 is a device mainly for adjusting the temperature of the storage battery 71, and is installed under the storage battery 71 in a state of being in thermal contact with the lower end of the storage battery 71. A switching element storage portion 72 is installed under the temperature adjustment jacket 48, and the lower portion of the temperature adjustment jacket 48 and the upper portion of the switching element storage portion 72 are in thermal contact (in this embodiment, , Direct contact.) The temperature adjustment jacket 48 is made of a metal having high thermal conductivity such as aluminum. Therefore, the switching element 73 a of the inverter 73 and the switching element 74 a of the converter 74 housed in the storage battery 71 and the switching element housing portion 72 can be efficiently cooled by the cold heat of the temperature adjustment jacket 48.

(3-2-5) Inverter 73
The use of the inverter 73 is not particularly limited, but is used as an inverter that performs frequency control of the compressor 21 in the present embodiment. In the present embodiment, the inverter 73 is disposed below the hot water storage tank 35, the storage battery 71, and the temperature adjustment jacket 48, and has a heat radiating portion for releasing heat from the inverter 73.

(3-2-6) Converter 74
The application of the converter 74 is not particularly limited, but is used as a converter that controls charging and discharging of the storage battery 71 in the present embodiment. In the present embodiment, the converter 74 is disposed below the hot water storage tank 35, the storage battery 71, and the temperature adjustment jacket 48, and has a heat radiating portion for releasing heat from the converter 74.

(3-2-7) Switching element storage portion 72
The switching element storage unit 72 stores the switching element 73 a of the inverter 73 and the switching element 74 a of the converter 74 included in the heat pump unit 1. Note that the inside of the switching element storage portion 72 is made of a metal such as aluminum having high thermal conductivity, and is connected to the switching element 73a of the inverter 73 and the switching element 74a of the converter 74 stored in the switching element storage portion 72. On the other hand, the heat of the outside of the switching element storage part 72 is configured to be easily transmitted.

  The switching element 73a of the inverter 73 and the switching element 74a of the converter 74 are heated during operation. On the other hand, the lower part of the temperature control jacket 48 is in thermal contact with the switching element storage portion 72 that stores the switching elements 73a and 74a. Specifically, a portion on the heat dissipating part side of the switching element 73 a of the inverter 73 and a part on the heat dissipating part side of the switching element 74 a of the converter 74 are in contact with the lower part of the temperature adjustment jacket 48. For this reason, the temperature of the switching element 73a of the inverter 73 and the temperature of the switching element 74a of the converter 74 can be relaxed so that the degree of temperature change becomes small.

(3-3) Temperature control circuit 40
In the present embodiment, a part of the hot water storage circuit 30 described above is a temperature adjustment circuit 40. That is, a part of the hot water storage circuit 30 also serves as a temperature control circuit for the storage battery 71 and the switching element storage portion 72.

  Specifically, the boiling forward pipe 31 extends from the vicinity of the lower end portion of the hot water storage tank 35, passes through the inside of the temperature adjustment jacket 48, and reaches the upstream end portion of the water pipe 32 w in the water heat exchanger 22. It is connected to the. For this reason, the water existing in the lower part of the hot water storage tank 35 flows out from the lower part of the hot water storage tank 35 to the forward pipe 31. The boiling forward pipe 31 is connected to the water heat exchanger 22 after passing through the inside of the temperature control jacket 48. For this reason, the cold heat of the water that has passed through the inside of the temperature adjustment jacket 48 is transferred from below to the storage battery 71, and the temperature of the storage battery 71 can be adjusted. The heat of the water that has passed through the inside of the temperature control jacket 48 is not limited to cold. For example, even when the temperature falls below zero, as in the early morning of winter, the temperature of the water passing through the boiling forward pipe 31 does not fall below zero. The storage battery 71 can be warmed from below by heat, and the temperature of the storage battery 71 can be increased so as not to fall below the lower limit of the operating temperature range.

(4) Overall Operation Next, the operation of the hot water supply system 100 will be described.

  When the boiling pump 34 is driven in response to a command from the control unit, the water in the hot water storage tank 35 or the hot water present at a lower temperature flows out to the boiling forward pipe 31. The water flowing through the boiling forward pipe 31 passes through the temperature control jacket 48 and reaches the water heat exchanger 22. In the water heat exchanger 22, heat exchange is performed between the water flowing through the boiling forward pipe 31 and the high-temperature refrigerant of the heat pump unit 1. Thereby, water is heated and becomes warm water. The hot water returns to the vicinity of the upper end of the hot water storage tank 35 via the boiling return pipe 33.

  On the other hand, in the refrigerant circuit 20, as shown in the Mollier diagram of FIG. 3, the refrigerant (see point a in FIG. 3) sucked into the compressor 21 is compressed by the compressor 21 to become high temperature and high pressure (see FIG. 3). (Refer to point b), when flowing through the refrigerant pipe 25 and passing through the refrigerant pipe 22r in the water heat exchanger 22, heat is exchanged with the water flowing through the boiling forward pipe 31 to dissipate heat. (See point c in FIG. 3). The refrigerant after heat dissipation is decompressed by passing through the expansion valve 23, and becomes a low-temperature gas-liquid two-phase state (see point d in FIG. 3). The refrigerant in the gas-liquid two-phase state that has become low-temperature and low-pressure flows to the air heat exchanger 24 and evaporates by exchanging heat with the outside air in the air heat exchanger 24 (see point a in FIG. 3). The vaporized refrigerant is sucked into the compressor 21 and compressed again to become a high-temperature and high-pressure refrigerant, and the above cycle is repeated.

  When hot water is supplied from the hot water storage tank 35 to a bathroom or the like, the hot water existing in the vicinity of the upper end of the hot water storage tank 35 flows out from the hot water outlet pipe 51 connected in the vicinity of the upper end. Hot water supplied via the hot water outlet 51 and water from the outside such as city water supplied via the mixing water supply channel 83 are mixed by the hot water mixing valve 84. The hot water thus mixed is supplied to the bathroom or the like via the hot water supply pipe 52.

(5) Features of the first embodiment (5-1)
The storage battery 71 used in the hot water supply system 100 depends on the temperature environment of the place where the service life is installed, and has the property of extending the service life by maintaining the temperature within the operating temperature range. Yes.

  Here, in the hot water supply system 100 of the first embodiment, an arrangement configuration in which the upper part of the storage battery 71 is in thermal contact with the lower part of the hot water storage tank 35 is employed. And the temperature range of the water stored under the hot water storage tank 35 is maintained in substantially the same temperature range as the operating temperature range of the storage battery 71 throughout the year. For this reason, it is possible to extend the life of the storage battery 71 simply by adopting the above arrangement.

  For example, when the storage battery 71 is a lithium ion battery, the battery life can be extended at least twice compared to other conditions by suppressing the temperature rise by 10 ° C. at a discharge depth of 50%, and the temperature is 25 ° C. Keeping the battery back and forth can dramatically improve the battery life.

(5-2)
In the hot water supply system 100 of the first embodiment, the lower part of the storage battery 71 is disposed so as to be in thermal contact with the upper part of the temperature control jacket 48. In the temperature adjustment jacket 48, water having a stable temperature flows from below the hot water storage tank 35 toward the water heat exchanger 22, and the temperature of the storage battery 71 is adjusted by transferring heat to the storage battery 71 from below. For this reason, the storage battery 71 is sandwiched from above and below by the lower part of the hot water storage tank 35 on the upper side and the upper part of the temperature control jacket 48 on the lower side, and not only from the upper part but also from the lower part. The temperature can be adjusted.

(5-3)
In the hot water supply system 100 of the first embodiment, the switching element storage portion 72 in which the switching element 73 a of the inverter 73 and the switching element 74 a of the converter 74 are stored is in thermal contact with the lower part of the temperature adjustment jacket 48. Is arranged. As a result, a lower portion of the temperature adjustment jacket 48 that is not directly used for temperature adjustment of the storage battery 71 can be used for temperature adjustment of the switching element 73a of the inverter 73 and the switching element 74a of the converter 74. ing.

(5-4)
In the hot water supply system 100 of the first embodiment, the water flowing through the hot water storage circuit 30 passes through the inside of the temperature adjustment jacket 48 before flowing into the water pipe 32 w of the water heat exchanger 22. Here, when the city water temperature is low such as in winter, the water temperature can be raised by the heat of the storage battery 71 when passing through the inside of the temperature control jacket 48 before reaching the water pipe 32w of the water heat exchanger 22. The load on the refrigerant circuit 20 side required by the water heat exchanger 22 can be reduced.

(5-5)
In the hot water storage unit 3 of the hot water supply system 100, a storage battery 71, which is a relatively heavy object, is disposed below the hot water storage tank 35. This makes it possible to stabilize the arrangement (to obtain an anchor effect). (6) Second Embodiment A hot water supply system 200 according to a second embodiment will be described with reference to the drawings.

  In FIG. 4, the schematic block diagram of the hot water supply system 200 which concerns on 2nd Embodiment of this invention is shown.

(7) Overall Configuration The hot water supply system 200 includes the heat pump unit 201 including the refrigerant circuit 220, the hot water storage unit 203 including the hot water storage circuit 230, and the temperature adjustment circuit 240, as in the hot water supply system 100 according to the first embodiment described above. ing. Since the hot water supply system 200 has substantially the same configuration as the hot water supply system 100, the description of the portion having the same configuration as the hot water supply system 100 is omitted. Below, it demonstrates focusing on the part which has a different structure from the hot-water supply system 100. FIG.

(8) Detailed configuration (8-1) Heat pump unit 201
Unlike the heat pump unit 1 of the hot water supply system 100, the heat pump unit 201 does not include the water heat exchanger 22.

(8-2) Hot water storage unit 203
The hot water storage unit 203 includes a water heat exchanger 222 corresponding to the water heat exchanger 22 of the first embodiment. As a result, the hot water storage unit 203 houses the hot water storage tank 35, the storage battery 71, the temperature adjustment jacket 48, and the water heat exchanger 222 so as to be integrated.

  The boiling forward pipe 231 is directly connected to the water heat exchanger 222 from the vicinity of the lower end of the hot water storage tank 35 without passing through the temperature adjustment jacket 48.

(8-3) Temperature control circuit 40a
In the present embodiment, a temperature adjustment circuit 40 a is provided as a part of the refrigerant circuit 220. The temperature adjustment circuit 40 a functions to adjust the temperature of the storage battery 71 and the switching element storage portion 72. In the refrigerant circuit 220, the refrigerant pipe 25 is connected to the discharge side of the compressor 21, the refrigerant pipe 22r in the water heat exchanger 222, the temperature adjustment jacket 48, the expansion valve 23, the air heat exchanger 24, the suction side of the compressor 21, The devices are connected in this order, and the refrigerant is circulated inside.

  In the refrigerant circuit 220, the refrigerant that has dissipated heat when passing through the refrigerant pipe 22 r of the water heat exchanger 222 exits the water heat exchanger 222 toward the temperature adjustment jacket 48 and passes through the temperature adjustment jacket 48. Thereby, the heat of the refrigerant is transmitted to the storage battery 71 and the switching element storage part 72 via the temperature adjustment jacket 48, and the temperatures of the storage battery 71 and the switching element storage part 72 are adjusted. The refrigerant that has passed through the inside of the temperature control jacket 48 flows toward the expansion valve 23.

(9) Overall Operation Next, the operation of the hot water supply system 200 will be described.

  When the boiling pump 34 is driven in response to a command from the control unit, the water in the hot water storage tank 35 or the hot water present at a lower temperature flows out to the boiling forward pipe 231. The water flowing in the boiling forward pipe 231 reaches the water heat exchanger 222. In the water heat exchanger 222, heat is exchanged between the water flowing in the boiling forward pipe 231 and the high-temperature refrigerant of the heat pump unit 201. Thereby, water is heated and becomes warm water. The hot water returns to the vicinity of the upper end of the hot water storage tank 35 via the boiling return pipe 33.

  On the other hand, in the refrigerant circuit 220, the refrigerant that has been compressed by the compressor 21 to a high temperature and high pressure flows through the refrigerant pipe 25, through the refrigerant pipe 22 r in the water heat exchanger 222, and through the boiling forward pipe 231. Heat is exchanged with water that has been discharged to dissipate heat. The refrigerant that has passed through the refrigerant pipe 22 r of the water heat exchanger 222 is sent into the temperature control jacket 48. The heat of the refrigerant that has passed through the inside of the temperature control jacket 48 is transferred to the storage battery 71 and the switching element storage portion 72. The refrigerant that has passed through the inside of the temperature control jacket 48 is depressurized when passing through the expansion valve 23, and becomes a low temperature gas-liquid two-phase state. The refrigerant in the gas-liquid two-phase state that has become low-temperature and low-pressure flows to the air heat exchanger 24, exchanges heat with the outside air in the air heat exchanger 24, and evaporates. The evaporated refrigerant is sucked into the compressor 21 and compressed again to become a high-temperature and high-pressure refrigerant. Thereafter, the above operation is repeated.

(10) Features of the Second Embodiment In the hot water supply system 200 of the second embodiment, the storage battery 71 is sandwiched from above and below by the hot water storage tank 35 and the temperature adjustment jacket 48 as in the first embodiment. The temperature of 71 can be adjusted.

  In the hot water supply system 200 according to the second embodiment, the temperature adjustment circuit 40 a is provided, so that the heat of the refrigerant from the outlet of the water heat exchanger 222 toward the air heat exchanger 24 is used to adjust the temperature of the storage battery 71. It can be used directly. Here, since the temperature adjustment jacket 48 can be passed using the refrigerant flow in the refrigerant circuit 220, a special pump or the like provided for the purpose of flowing the refrigerant through the temperature adjustment jacket 48 is necessary. No.

  In particular, in the refrigerant circuit 220 of the hot water supply system 200 of the second embodiment, unlike the first embodiment, the boiling forward pipe 231 does not pass through the inside of the temperature control jacket 48 and reaches the water pipe 32w of the water heat exchanger 222. It has been sent. For this reason, the temperature of the water passing through the inlet of the water pipe 32w of the water heat exchanger 222 is not affected by the heat of the storage battery 71 as compared to the case of the first embodiment. Thereby, since the temperature of the water flowing through the inlet of the water pipe 32w of the water heat exchanger 222 is a temperature not affected by the heat of the storage battery 71, the refrigerant flowing through the outlet of the refrigerant pipe 22r of the water heat exchanger 222 is The temperature is different from that in the first embodiment.

  For example, for the summer season, the operation of the refrigerant circuit 220 will be described with reference to the Mollier diagram of FIG. In the Mollier diagram, a cycle indicated by abcd indicates the behavior of the refrigerant in the case of the first embodiment, and a′-b is the behavior of the refrigerant in the case of the second embodiment. This is shown for comparison with the cycle indicated by -c'-d '. First, the refrigerant that has radiated heat through the refrigerant pipe 22r of the water heat exchanger 222 (see the point c in FIG. 5) receives heat from the storage battery 71 when passing through the inside of the temperature control jacket 48, and the temperature rises. (See point c ′ in FIG. 5). Then, the refrigerant that has passed through the inside of the temperature control jacket 48 is decompressed by the expansion valve 23 (see the point d 'in FIG. 5), and then flows into the air heat exchanger 24. The refrigerant flowing into the air heat exchanger 24 exchanges heat with the outside air and evaporates (see point a ′ in FIG. 5). Here, the refrigerant passing through the water heat exchanger 222 obtains heat from the storage battery 71 when passing through the temperature control jacket 48, whereby the evaporation load of the refrigerant in the air heat exchanger 24 can be reduced. . Thereby, evaporation pressure and evaporation temperature can be raised and COP can be improved. Since the boiling forward pipe 231 does not pass through the inside of the temperature control jacket 48, the temperature of the refrigerant flowing through the outlet of the refrigerant pipe 22r of the water heat exchanger 222 is the same as that of the water heat exchanger 22 of the first embodiment. Compared to the low temperature. However, since heat can be obtained in the storage battery 71, it is possible to improve COP as described above.

(11) Modification of the second embodiment (11-1) Modification 2A
In the second embodiment, the refrigerant from the water heat exchanger 222 toward the expansion valve 23 passes through the inside of the temperature adjustment jacket 48, and the water flowing through the boiling forward pipe 231 does not pass through the inside of the temperature adjustment jacket 48. The case has been described as an example.

  On the other hand, as shown in FIG. 6, for example, as shown in FIG. 6, the hot water supply system has a low temperature before the low temperature water existing in the hot water storage tank 35 reaches the water pipe 32 w of the water heat exchanger 222. The hot water supply system 200 </ b> A may further include a configuration similar to that of the temperature adjustment circuit 40 of the first embodiment so as to pass through the inside of the adjustment jacket 48.

  In the temperature adjustment jacket 48, the flow direction of the water flowing in the temperature adjustment circuit 40 in the boiling forward pipe 31 and the flow direction of the refrigerant flowing in the temperature adjustment circuit 40a in the refrigerant circuit 220 are opposite flows. It is configured to be a relationship.

  Carbon dioxide refrigerant is used in the refrigerant circuit 220 of the hot water supply system 200A. Since the temperature of the water entering the water heat exchanger 222 is leveled throughout the year, as a result, the temperature of the refrigerant exiting the water heat exchanger 222 is also leveled. As a result, the temperature of the temperature control jacket 48, that is, the temperature of the storage battery 71 can be leveled.

  For example, depending on the installation environment and use time, as shown in the Mollier diagram of FIG. 7, the refrigerant flowing out of the water heat exchanger 222 in the refrigerant circuit 220 passes through the inside of the temperature adjustment jacket 48. In addition to being heated by receiving heat from the storage battery 71, it may be heated by receiving heat from water flowing through the temperature control circuit 40a. In this case, it is possible to further reduce the evaporation load in the air heat exchanger 24 and improve the COP of the cycle. In the Mollier diagram of FIG. 7, the cycle indicated by abcd indicates the behavior of the refrigerant in the case of the first embodiment, and the refrigerant in the case of the modification 2A of the second embodiment. This is shown for comparison with the cycle indicated by the behavior a′-bc′-d ′.

  In addition, in the inside of the temperature adjustment jacket 48 of the modified example 2A, water flows in the temperature adjustment circuit 40 in the boiling forward pipe 31, and the refrigerant flows in the temperature adjustment circuit 40a in the refrigerant circuit 220. Two types of fluids (hybrids) can flow through the temperature control jacket 48. For this reason, since the temperature of the temperature adjustment jacket 48 can be adjusted using water and refrigerant having different heat capacities, the temperature of the temperature adjustment jacket 48 can be adjusted more finely. The temperature can be adjusted more finely.

(11-2) Modification 2B
The hot water supply system further includes, for example, a bypass circuit 29, a main circuit portion 28, a branch valve 28a, an expansion valve 28b, and a check valve 28c with respect to the configuration of the hot water supply system 200A of Modification 2A. A hot water supply system 200B as shown in FIG. 8 provided with the refrigerant circuit 220B may be used.

  In the refrigerant circuit 220B, a bypass circuit 29 that connects the upstream side and the downstream side of the temperature adjustment jacket 48 in the temperature adjustment circuit 40a is formed. A portion of the refrigerant circuit 220B on the side of the temperature adjustment jacket 48 that is bypassed by the bypass circuit 29 is referred to as a main circuit portion 28. Here, the branch valve 28a can be switched between a state in which the refrigerant that has passed through the refrigerant pipe 22r of the water heat exchanger 222 flows to the bypass circuit 29 side and a state to flow to the temperature adjustment jacket 48 side of the main circuit portion 28. Is provided. The expansion valve 28 b is provided in the main circuit portion 28 so that the flow rate of the refrigerant flowing from the branch valve 28 a toward the temperature adjustment jacket 48 can be adjusted. The check valve 28 c is provided in the main circuit portion 28 so as to allow only a flow in which the refrigerant that has passed through the temperature adjustment jacket 48 joins at the downstream end of the bypass circuit 29.

  Here, the expansion valve 28b is provided in the middle of the main circuit portion 28 toward the temperature adjustment jacket 48, and the flow rate and pressure of the refrigerant toward the temperature adjustment jacket 48 are adjusted. Therefore, the temperature of the refrigerant toward the temperature adjustment jacket 48 is adjusted. It has become possible to maintain a more stable temperature throughout the year.

  Further, since the water entering the water heat exchanger 222 is heated by passing through the temperature control jacket 48, the amount of heat required on the refrigerant side in order to raise the water temperature in the water heat exchanger 222 is reduced and consumed. Electric power can be kept low.

  When the branch valve 28a is in a switching state in which the refrigerant flows not to the bypass circuit 29 but to the temperature adjustment jacket 48 side, as shown in the Mollier diagram of FIG. 9, the expansion valve 23 is fully opened, and the expansion valve 28b. Thus, the low pressure of the refrigerant circuit 220 is controlled. Here, for example, in the summer, the refrigerant flowing through the temperature adjustment jacket 48 is warmed by the heat of the storage battery 71, so that the refrigerant evaporation load in the air heat exchanger 24 in the refrigerant circuit 220 can be reduced. As a result, the evaporation pressure and the evaporation temperature can be increased (see points a ′ and d ′ in the Mollier diagram of FIG. 9), and COP can be improved. In the Mollier diagram of FIG. 9, the cycle indicated by abcd indicates the behavior of the refrigerant in the case of the first embodiment, and the refrigerant in the case of the modification 2B of the second embodiment. This is shown for comparison with the cycle indicated by the behavior a′-bcd ′.

  In addition, when the branch valve 28a is in a switching state in which the refrigerant flows not to the bypass circuit 29 but to the temperature adjustment jacket 48 as described above, the pressure of the refrigerant flowing through the temperature adjustment jacket 48 is controlled to a low pressure by the expansion valve 28b. Thus, even when the hot water supply load is small, it is possible to operate while keeping the temperature of the storage battery 71 constant.

  In addition, in the temperature adjustment jacket 48 of the present modification 2B, water flows in the temperature adjustment circuit 40 in the boiling forward pipe 31, and the refrigerant passes through the temperature adjustment circuit 40a in the main circuit portion 28 of the refrigerant circuit 220B. Since it is flowing, two kinds of fluids (hybrids) can flow inside the temperature control jacket 48. For this reason, since the temperature of the temperature adjustment jacket 48 can be adjusted using water and refrigerant having different heat capacities, the temperature of the temperature adjustment jacket 48 can be adjusted more finely. The temperature can be adjusted more finely.

(12) Third Embodiment A hot water supply system 300 according to a third embodiment will be described with reference to the drawings.

  In FIG. 10, the schematic block diagram of the hot water supply system 300 which concerns on 3rd Embodiment of this invention is shown.

(13) Overall Configuration The hot water supply system 300 includes a heat pump unit 301 including a refrigerant circuit 320, a hot water storage unit 303 including a hot water storage circuit 330, and a temperature adjustment circuit 40b, as in the hot water supply system 100 according to the first embodiment of the present invention. I have. Since the hot water supply system 300 has substantially the same configuration as the hot water supply system 100, the description of the portion having the same configuration as the hot water supply system 100 is omitted. Below, the part which is different from the hot water supply system 100 is demonstrated.

(14) Detailed configuration (14-1) Heat pump unit 301
The heat pump unit 301 includes a high temperature side heat exchanger 26 and a low temperature side heat exchanger 27 included in a temperature adjustment circuit 40b described later.

  That is, in the refrigerant circuit 320, the refrigerant pipe 25 is connected to the discharge side of the compressor 21, the refrigerant pipe 22r in the water heat exchanger 22, the high temperature side heat exchanger 26, the expansion valve 23, the low temperature side heat exchanger 27, the air heat. Each device is connected in the order of the exchanger 24 and the suction side of the compressor 21, and the refrigerant is circulated therein.

(14-2) Temperature control circuit 40b
The temperature adjustment circuit 40 b is a circuit for mainly adjusting the temperatures of the storage battery 71 and the switching element storage portion 72. The heat medium circulating in the temperature control circuit 40b is not particularly limited, but is water in the present embodiment. The temperature control circuit 40b of this embodiment includes a pump 45, a downstream water pipe 41, a branch valve 46, a low temperature side water pipe 42, a high temperature side water pipe 43, a mixing valve 47, an upstream side water pipe 44, and a high temperature side heat exchanger. 26 and a low-temperature side heat exchanger 27.

  The downstream water pipe 41 connects the discharge side of the pump 45 and the branch valve 46, and flows the water discharged by the pump 45 to the branch valve 46. The water that has reached the branch valve 46 is branched by the branch valve 46 into a low temperature side water pipe 42 and a high temperature side water pipe 43. The low temperature side water pipe 42 extends to pass through the inside of the low temperature side heat exchanger 27 and is connected to the mixing valve 47. The high temperature side water pipe 43 extends so as to pass through the inside of the high temperature side heat exchanger 26 and is connected to the mixing valve 47.

  The high temperature side heat exchanger 26 exchanges heat between the refrigerant in the refrigerant circuit 320 that goes from the outlet of the water heat exchanger 22 to the expansion valve 23 and the water flowing through the high temperature side water pipe 43. On the other hand, the low temperature side heat exchanger 27 exchanges heat between the refrigerant in the refrigerant circuit 320 heading from the expansion valve 23 to the air heat exchanger 24 and the water flowing through the low temperature side water pipe 42. Therefore, the temperature of the water flowing through the low temperature side water pipe 42 exiting the low temperature side heat exchanger 27 is lower than that of the water flowing through the high temperature side water pipe 43 exiting the high temperature side heat exchanger 26.

  In the mixing valve 47, the water in the low temperature side water pipe 42 and the water in the high temperature side water pipe 43 are mixed. The mixed water passes through the inside of the temperature control jacket 48 via the upstream water pipe 44 and enters the suction side of the pump 45. The low temperature side water pipe 42 is provided with a temperature sensor 42T. The high temperature side water pipe 43 is provided with a temperature sensor 43T. The upstream water pipe 44 is provided with a temperature sensor 44T. The control unit acquires the temperature value of water from the temperature sensor 42T, the temperature sensor 43T, and the temperature sensor 44T, acquires the temperature value of the temperature sensor 71a of the storage battery 71, and mixes the valve 47 based on these values. By controlling the mixing ratio of the water from the low temperature side water pipe 42 and the water from the high temperature side water pipe 43, the temperature of the water flowing in the upstream side water pipe 44 toward the temperature adjustment jacket 48 is adjusted. It can be adjusted.

  In the temperature adjustment jacket 48, the heat of the water flowing through the upstream water pipe 44 is transferred to the storage battery 71 and the switching element storage portion 72 via the temperature adjustment jacket 48.

  Here, the heat of the refrigerant flowing from the outlet of the water heat exchanger 22 toward the expansion valve 23 and the heat of the refrigerant flowing from the expansion valve 23 toward the air heat exchanger 24 are used, so that the temperature adjustment circuit 40b can be used. The temperature of the water sent can be adjusted, and the temperature of the storage battery 71 can be adjusted. The amount of circulating water flowing through each of the low temperature side water pipe 42 and the high temperature side water pipe 43 is controlled by the mixing valve 47. Thereby, the temperature of the water sent to the temperature control jacket 48 can be adjusted so as to be maintained at an optimum temperature throughout the year.

(15) Overall operation The operation of generating hot water of the hot water supply system 300 is the same as that of the hot water supply system 200 of the second embodiment except that the arrangement of the water heat exchanger 22 is different. Hereinafter, the operation of the refrigerant circuit 320 will be described.

  In the refrigerant circuit 320, the refrigerant that has been compressed by the compressor 21 to a high temperature and high pressure flows through the refrigerant pipe 25, passes through the water heat exchanger 22, and exchanges heat with water that flows through the boiling forward pipe 31. And dissipate heat. The radiated refrigerant passes through the high temperature side heat exchanger 26 without being depressurized, exchanges heat with water flowing through the high temperature side water pipe 43 of the temperature adjustment circuit 40b, and further radiates heat. Thereafter, the refrigerant is decompressed by the expansion valve 23 and becomes a low temperature gas-liquid two-phase state. The gas-liquid two-phase refrigerant that has become low temperature and low pressure passes through the low temperature side heat exchanger 27 and exchanges heat with water flowing through the low temperature side water pipe 42 of the temperature control circuit 40b to obtain heat from the water and heat it. Is done. Thereafter, the refrigerant flows to the air heat exchanger 24 and evaporates by exchanging heat with the outside air sent to the air heat exchanger 24. The vaporized refrigerant is sucked into the compressor 21 and compressed. The compressed refrigerant becomes a high-temperature and high-pressure refrigerant and repeats the refrigeration cycle.

(16) Features of Third Embodiment In the third embodiment, the mixing ratio in the mixing valve 47 is adjusted, so that the refrigerant flowing from the outlet of the water heat exchanger 22 to the expansion valve 23 in the high temperature side heat exchanger 26 is adjusted. The mixing ratio of water that has become high temperature by using heat and water that has become low temperature by using the heat of the refrigerant from the expansion valve 23 toward the air heat exchanger 24 in the low temperature side heat exchanger 27 is adjusted, Temperature-adjusted water can be obtained. The temperature-adjusted water is sent to the temperature adjustment jacket 48 via the upstream water pipe 44, so that the temperature of the storage battery 71 can be adjusted. Thereby, it is possible to control the temperature of the cooling water to an optimum temperature throughout the year. In particular, in the temperature adjustment circuit 40b, it is possible to finely adjust the temperature of the storage battery 71 by using two different temperature portions of the refrigerant temperature of the high temperature side heat exchanger 26 and the refrigerant temperature of the low temperature side heat exchanger 27. It has become.

  Further, for example, regarding the installation environment and use period, particularly in the summer, the temperature of the water flowing through the downstream water pipe 41 of the temperature control circuit 40b that has passed through the temperature control jacket 48 and received heat from the storage battery 71 is high. When the temperature of the refrigerant flowing through the side heat exchanger 26 is lower than the temperature of the refrigerant flowing through the low-temperature side heat exchanger 27 and higher than the temperature of the refrigerant flowing through the low-temperature side heat exchanger 27, the refrigerant flowing through the refrigerant circuit 320 has the behavior shown in the Mollier diagram of FIG. be able to. That is, the refrigerant (see point c in FIG. 11) that has flowed out of the water heat exchanger 22 of the refrigerant circuit 320 is cooled by the water flowing through the high temperature side water pipe 43 when flowing through the high temperature side heat exchanger 26 (FIG. 11). (See point c ′). Thereafter, the refrigerant flowing out of the high temperature side heat exchanger 26 is depressurized by the expansion valve 23 (see point d ′ in FIG. 11) and heated by the water flowing through the low temperature side water pipe 42 when flowing through the low temperature side heat exchanger 27. (See point d ″ in FIG. 11). It should be noted that the flow rate ratio of the water flowing through the high temperature side water pipe 43 and the low temperature side water pipe 42 of the temperature adjustment circuit 40b is adjusted by the mixing valve 47, so that the refrigerant circuit 320 is supplied to the water heat exchanger 22 particularly in summer. When the inflow water temperature is high and the COP is lowered during hot water supply, the refrigerant is cooled by the water flowing through the high temperature side heat exchanger 26 (point c → point c ′ in FIG. 11), and the degree of supercooling is increased. COP can be improved. On the other hand, when the outside air temperature is low, such as in winter, and the evaporation temperature of the refrigerant in the air heat exchanger 24 is lowered, causing a decrease in COP during hot water supply, the refrigerant is heated by the water flowing through the low-temperature side heat exchanger 27. (Point d ′ → Point d ″ in FIG. 11) By using the exhaust heat of the storage battery 71, it is possible to reduce the evaporation load in the air heat exchanger 24 and improve COP. it can. In the Mollier diagram of FIG. 11, the cycle indicated by abcd indicates the behavior of the refrigerant in the case of the first embodiment, and is the behavior of the refrigerant in the case of the third embodiment. It is shown for comparison with the cycle indicated by '-b-c'-d'-d' '. The Mollier diagram is merely an example. In FIG. 11, d ″ need not be located on a line connecting c and d, and is not limited thereto.

(17) Fourth Embodiment A hot water supply system 400 according to a fourth embodiment will be described with reference to the drawings.

  In FIG. 12, the schematic block diagram of the hot water supply system 400 which concerns on 4th Embodiment of this invention is shown. The hot water supply system 400 is not particularly limited, but is preferably used in an area where the average value of water temperature (temperature of city water or well water) throughout the year is 15 ° C. or less.

(18) Overall Configuration A hot water supply system 400 includes a heat pump unit 401 including a refrigerant circuit 420, a hot water storage unit 403 including a hot water storage circuit 430, and a temperature adjustment circuit 40c, similar to the hot water supply system 300 according to the third embodiment of the present invention. I have. Since the hot water supply system 400 has substantially the same configuration as the hot water supply system 300, the description of the portion having the same configuration as the hot water supply system 300 is omitted, and the portion having the configuration different from the hot water supply system 300 is mainly described. Explained.

(19) Detailed configuration (19-1) Temperature control circuit 40c
The temperature adjustment circuit 40 c is a circuit for mainly adjusting the temperatures of the storage battery 71 and the switching element storage portion 72. The heat medium circulating in the temperature control circuit 40c is not particularly limited, but is water in the present embodiment. The temperature control circuit 40c of the present embodiment includes a pump 45, a water pipe 441, and a high temperature side heat exchanger 426.

  The water pipe 441 extends from the discharge side of the pump 45, passes through the inside of the high temperature side heat exchanger 426, passes through the inside of the temperature adjustment jacket 48, and is connected to the suction side of the pump 45. In the high temperature side heat exchanger 426, heat is exchanged between the refrigerant that flows from the outlet of the water heat exchanger 22 to the expansion valve 23 in the refrigerant circuit 420 and the water that flows through the water pipe 441 of the temperature adjustment circuit 40c.

  Here, the temperature of the storage battery 71 is adjusted through the water circulating in the temperature adjustment circuit 40c using the heat of the refrigerant from the outlet of the water heat exchanger 22 toward the expansion valve 23.

(20) Overall operation The operation of generating hot water of the hot water supply system 400 is the same as that of the hot water supply system 300 of the third embodiment, and a description thereof will be omitted. Hereinafter, the operation of the refrigerant circuit 420 will be described.

  In the refrigerant circuit 420, the refrigerant that has been compressed by the compressor 21 to a high temperature and high pressure flows through the refrigerant pipe 25 and flows through the boiling forward pipe 31 when passing through the interior of the water heat exchanger 22. Heat exchange with water to dissipate heat. The radiated refrigerant passes through the high temperature side heat exchanger 426 and exchanges heat with water flowing in the high temperature side heat exchanger 426 in the water piping 441 of the temperature adjustment circuit 40c. Thereafter, the refrigerant is decompressed by the expansion valve 23 and becomes a low temperature gas-liquid two-phase state. The refrigerant in the gas-liquid two-phase state that has become low temperature and low pressure flows to the air heat exchanger 24, exchanges heat with the outside air in the air heat exchanger 24, and evaporates. The vaporized refrigerant is sucked into the compressor 21 and compressed. The compressed refrigerant becomes a high-temperature and high-pressure refrigerant and repeats the refrigeration cycle.

(21) Features of the fourth embodiment In the fourth embodiment, the temperature of the water flowing through the temperature adjustment circuit 40c is changed using the heat of the refrigerant from the outlet of the water heat exchanger 22 toward the expansion valve 23, so that the storage battery 71 can be used for temperature control. Thereby, it is possible to adjust the temperature of the storage battery 71 by using the cold heat generated by the hot water supply system 400 more efficiently, and keep it at an appropriate temperature. Further, by using the exhaust heat of the storage battery 71 to heat the refrigerant from the outlet of the water heat exchanger 22 toward the expansion valve 23, the evaporation load in the air heat exchanger 24 can be reduced.

  For example, the water piping of the temperature adjustment circuit 40c in which the temperature of the refrigerant from the outlet of the water heat exchanger 22 toward the expansion valve 23 receives the heat from the storage battery 71 through the temperature adjustment jacket 48 in the installation environment and use period. When the temperature of the water flowing through 441 is lower, the refrigerant flowing through the refrigerant circuit 420 can behave as shown in the Mollier diagram of FIG. That is, the refrigerant flowing out of the water heat exchanger 22 of the refrigerant circuit 420 is heated by the water flowing through the water pipe 441 when flowing through the high temperature side heat exchanger 426 (see point c ′ in FIG. 13). Thereafter, the refrigerant that has flowed out of the high temperature side heat exchanger 426 is depressurized by the expansion valve 23 and then evaporates by exchanging heat with the outside air in the air heat exchanger 24. Here, the refrigerant sent to the air heat exchanger 24 is heated by the water flowing through the water pipe 441 of the temperature adjustment circuit 40c in the high temperature side heat exchanger 426. This makes it possible to reduce the evaporation load in the air heat exchanger 24 and improve COP (refer to the Mollier diagram in FIG. 13). Moreover, the exhaust heat of the storage battery 71 can be used through the water flowing through the water pipe 441 as the heat for heating the refrigerant sent to the air heat exchanger 24. In the Mollier diagram of FIG. 13, the cycle indicated by abcd indicates the behavior of the refrigerant in the case of the first embodiment, and is the behavior of the refrigerant in the case of the fourth embodiment. Shown for comparison with the cycle indicated by '-bc-c'-d'.

(22) Fifth Embodiment A hot water supply system 500 according to a fifth embodiment will be described with reference to the drawings.

  In FIG. 14, the schematic block diagram of the hot water supply system 500 which concerns on 5th Embodiment of this invention is shown. The hot water supply system 500 is not particularly limited, but is preferably used in an area where the average value of the water temperature (temperature of city water or well water) throughout the year is 25 ° C. or more.

(23) Overall Configuration A hot water supply system 500 includes a heat pump unit 501 including a refrigerant circuit 520, a hot water storage unit 503 including a hot water storage circuit 530, and a temperature adjustment circuit 40d, as in the hot water supply system 300 according to the third embodiment of the present invention. I have. Since the hot water supply system 500 has substantially the same configuration as that of the hot water supply system 300, the description of the portion having the same configuration as the hot water supply system 300 will be omitted, and the description will focus on the different portions.

(24) Detailed configuration (24-1) Temperature control circuit 40d
The temperature adjustment circuit 40d is a circuit mainly for adjusting the temperatures of the storage battery 71 and the switching element storage portion 72. The heat medium circulating in the temperature adjustment circuit 40d is not particularly limited, but is water in the present embodiment. The temperature adjustment circuit 40d of the present embodiment includes a pump 45, a water pipe 541, and a low temperature side heat exchanger 527.

  The water pipe 541 extends from the discharge side of the pump 45, passes through the inside of the low temperature side heat exchanger 527, passes through the inside of the temperature adjustment jacket 48, and is connected to the suction side of the pump 45. In the low temperature side heat exchanger 527, heat exchange is performed between the refrigerant that flows from the expansion valve 23 to the air heat exchanger 24 in the refrigerant circuit 520 and the water that flows through the water pipe 541 of the temperature adjustment circuit 40d.

  Here, the temperature of the storage battery 71 is adjusted through the water circulating in the temperature adjustment circuit 40d using the heat of the refrigerant from the expansion valve 23 toward the air heat exchanger 24.

(25) Overall operation The operation of generating hot water of the hot water supply system 500 is the same as that of the hot water supply system 300 of the third embodiment, and a description thereof will be omitted. Hereinafter, the operation of the refrigerant circuit 520 will be described.

  In the refrigerant circuit 520, the refrigerant that has been compressed by the compressor 21 to a high temperature and high pressure flows through the refrigerant pipe 25 and flows through the boiling forward pipe 31 when passing through the interior of the water heat exchanger 22. Heat exchange with water to dissipate heat. The radiated refrigerant is depressurized by the expansion valve 23 and becomes a low temperature gas-liquid two-phase state. The refrigerant in the gas-liquid two-phase state that has become low-temperature and low-pressure passes through the low-temperature side heat exchanger 527, and exchanges heat with water flowing inside the low-temperature side heat exchanger 527 in the water pipe 541 of the temperature adjustment circuit 40d. Thereafter, the refrigerant flows to the air heat exchanger 24, exchanges heat with the outside air in the air heat exchanger 24, and evaporates. The vaporized refrigerant is sucked into the compressor 21 and compressed. The compressed refrigerant becomes a high-temperature and high-pressure refrigerant and repeats the refrigeration cycle.

(26) Features of Fifth Embodiment In the fifth embodiment, the temperature of the water flowing through the temperature adjustment circuit 40d is changed using the heat of the refrigerant from the expansion valve 23 toward the air heat exchanger 24, and the storage battery 71 It can be used for temperature control. Thereby, it is possible to adjust the temperature of the storage battery 71 by using the cold heat generated by the hot water supply system 500 more efficiently, and keep it at an appropriate temperature. Further, by using the exhaust heat of the storage battery 71 to heat the refrigerant from the expansion valve 23 to the air heat exchanger 24, the evaporation load in the air heat exchanger 24 can be reduced.

  For example, in the installation environment or use period, the temperature of the refrigerant from the expansion valve 23 toward the air heat exchanger 24 passes through the temperature adjustment jacket 48 and the water piping 541 of the temperature adjustment circuit 40d that has received heat from the storage battery 71. When the temperature of the flowing water is lower, the refrigerant flowing through the refrigerant circuit 520 can behave as shown in the Mollier diagram of FIG. That is, the refrigerant flowing out of the water heat exchanger 22 of the refrigerant circuit 520 is heated by the water flowing through the water pipe 541 when flowing through the low temperature side heat exchanger 527 (see the point d ′ in FIG. 15). Thereafter, the refrigerant flowing out of the low temperature side heat exchanger 527 evaporates by exchanging heat with the outside air in the air heat exchanger 24. Here, the refrigerant sent to the air heat exchanger 24 is heated by the water flowing through the water pipe 541 of the temperature control circuit 40d in the low temperature side heat exchanger 527. This makes it possible to reduce the evaporation load in the air heat exchanger 24 and improve COP (see the Mollier diagram in FIG. 15). In addition, the exhaust heat of the storage battery 71 can be used through the water flowing through the water pipe 541 as the heat for heating the refrigerant sent to the air heat exchanger 24. In the Mollier diagram of FIG. 15, the cycle indicated by abcd indicates the behavior of the refrigerant in the first embodiment, and is the behavior of the refrigerant in the fifth embodiment. It is shown for comparison with the cycle indicated by “−bcd”.

(27) Sixth Embodiment A hot water supply system 600 according to a sixth embodiment will be described with reference to the drawings.

  In FIG. 16, the schematic block diagram of the hot water supply system 600 which concerns on 6th Embodiment of this invention is shown.

(28) Overall Configuration The hot water supply system 600 includes the heat pump unit 1 including the refrigerant circuit 20 and the hot water storage unit 603 including the hot water storage circuit 630, similarly to the hot water supply system 100 according to the first embodiment of the present invention. Since the hot water supply system 600 has substantially the same configuration as that of the hot water supply system 100, the description of the portion having the same configuration as that of the hot water supply system 100 will be omitted, and the description will focus on the different portions.

(29) Detailed configuration (29-1) Hot water storage circuit 630
The hot water storage circuit 630 is different from the hot water storage circuit 30 of the first embodiment. The boiling forward pipe 31 of the hot water storage circuit 630 extends from the lower side of the hot water storage tank 35 and is connected to the water pipe 32w of the hydrothermal exchanger 22 via the boiling pump 34, and the inside of the temperature control jacket 48 passes therethrough. Not done.

(29-2) Temperature control circuit 40e
The temperature adjustment circuit 40e is a circuit for mainly adjusting the temperatures of the storage battery 71 and the switching element storage portion 72. In the temperature control circuit 40e, water existing in the hot water storage tank 35 circulates as a heat medium. The temperature control circuit 40e of this embodiment includes a pump 634 and a water pipe 641.

  The water pipe 641 extends from the lower side of the hot water storage tank 35 and is connected so as to pass through the inside of the pump 634 and the temperature adjustment jacket 48 and return to a different part below the hot water storage tank 35.

  Here, the upper part of the storage battery 71 is not in direct contact with the lower surface of the hot water storage tank 35. The upper part of the temperature control jacket 48 is in direct contact with the lower part of the storage battery 71, and the lower part of the temperature control jacket 48 is in direct contact with the switching element storage part 72.

(30) Features of the Sixth Embodiment Unlike the hot water supply system 100, the hot water supply system 600 of the sixth embodiment is not in direct contact with the temperature adjustment jacket 48 and the hot water storage tank 35, but cold water below the hot water storage tank 35. Is circulated through the temperature adjustment circuit 40e to adjust the temperature of the temperature adjustment jacket 48, thereby adjusting the temperature of the storage battery 71.

(31) Seventh Embodiment A hot water supply system 700 according to a seventh embodiment will be described with reference to the drawings.

  In FIG. 17, the schematic block diagram of the hot water supply system 700 which concerns on 7th Embodiment of this invention is shown.

(32) Overall Configuration The hot water supply system 700 includes the heat pump unit 1 including the refrigerant circuit 20 and the hot water storage unit 703 including the hot water storage circuit 730, similarly to the hot water supply system 100 according to the first embodiment of the present invention. Since the hot water supply system 700 has substantially the same configuration as that of the hot water supply system 100, the description of the portion having the same configuration as the hot water supply system 100 will be omitted, and the description will focus on the different portions.

(33) Detailed configuration (33-1) Hot water storage circuit 730
The hot water storage circuit 730 is different from the hot water storage circuit 30 of the first embodiment. The boiling forward pipe 31 of the hot water storage circuit 730 extends from below the hot water storage tank 35 and is connected to the water pipe 32w of the hydrothermal exchanger 22 via the boiling pump 34, and the inside of the temperature control jacket 48 passes therethrough. Not done.

(33-2) Temperature control circuit 40f
The temperature adjustment circuit 40 f is a circuit for mainly adjusting the temperatures of the storage battery 71 and the switching element storage portion 72. Water existing in the hot water storage tank 35 circulates in the temperature adjustment circuit 40f as a heat medium. The temperature adjustment circuit 40f of this embodiment includes a pump 734 and a water pipe 741.

  The water pipe 741 extends from the lower side of the hot water storage tank 35 and is connected so as to pass through the inside of the pump 734 and the temperature control jacket 48 and return to a different part below the hot water storage tank 35.

Here, in the hot water supply system 700 of the present embodiment, the storage battery 71 is housed in the hot water storage unit 703, but unlike the hot water supply system 100 of the first embodiment, the storage battery 71 is located above the temperature control jacket 48. The upper part of the storage battery 71 is arranged so as to be in direct contact with the lower part of the temperature control jacket 48. Further, the switching element storage portion 72 is disposed so as to be in direct contact with the upper portion of the temperature adjustment jacket 48.

(34) Features of Seventh Embodiment A hot water supply system 700 of the seventh embodiment is different from the hot water supply system 100 in that the temperature adjustment jacket 48 and the hot water storage tank 35 are not in direct contact, but cold water below the hot water storage tank 35 is used. Is circulated through the temperature adjustment circuit 40f, thereby adjusting the temperature of the temperature adjustment jacket 48 and adjusting the temperature of the storage battery 71.

  Further, the switching element storage portion 72 is also arranged so as to be in direct contact with the lower portion of the hot water storage tank 35 and in direct contact with the upper portion of the temperature control jacket 48. The temperature of the part 72 can be adjusted.

  As described above, in the hot water supply system 700 according to the present embodiment, not only the temperature adjustment of both the storage battery 71 and the switching element storage unit 72 is possible, but the storage battery 71 is located below the hot water storage tank 35 at a temperature. It can be disposed below the adjustment jacket 48 and below the switching element storage portion 72. For this reason, by arranging the storage battery 71 heavier than the temperature control jacket 48 and the switching element storage portion 72 below, it is possible to stabilize the arrangement (to obtain an anchor effect).

(35) Eighth Embodiment A hot water supply system 800 according to an eighth embodiment will be described with reference to the drawings.

  In FIG. 18, the schematic block diagram of the hot water supply system 800 which concerns on 8th Embodiment of this invention is shown.

(36) Overall Configuration The hot water supply system 800 includes a heat pump unit 801 including the refrigerant circuit 820 similar to the hot water supply system 300 according to the third embodiment of the present invention, and a hot water storage unit 803 including the hot water storage circuit 830. Since the hot water supply system 800 has substantially the same configuration as the hot water supply system 300, the description of the portion having the same configuration as the hot water supply system 300 will be omitted, and the different portion will be mainly described.

(37) Detailed configuration (37-1) Hot water storage circuit 830
The hot water storage circuit 830 is different from the hot water storage circuit 330 of the third embodiment. The boiling forward pipe 31 of the hot water storage circuit 830 extends from below the hot water storage tank 35, passes through the inside of the temperature control jacket 48, and is connected to the water pipe 32 w of the water heat exchanger 22 via the boiling pump 34. ing. A part of the hot water storage circuit 830 of the eighth embodiment is a temperature adjustment circuit 40. That is, a part of the hot water storage circuit 830 is configured to pass through the inside of the temperature adjustment jacket 48, and thus also serves as a temperature adjustment circuit for the storage battery 71 and the switching element storage portion 72.

  The temperature adjustment circuit 40g is the same as the hot water supply system 300 according to the third embodiment described above. Although not particularly limited, in the present embodiment, water circulates inside the temperature control circuit 40g.

(38) Features of Eighth Embodiment In the hot water supply system 800 of the eighth embodiment, both the boiling forward pipe 31 and the temperature adjustment circuit 40g pass through the temperature adjustment jacket 48. For this reason, it is possible to adjust the temperature of the temperature adjustment jacket 48 using both the heat quantity of the water flowing through the boiling forward pipe 31 and the heat quantity of the water flowing through the temperature adjustment circuit 40g. For this reason, compared with the case where the tube and circuit which have passed through the inside of the temperature control jacket 48 are only the boiling forward pipe 31 and the case where only the temperature control circuit 40g is used, the temperature can be adjusted by two types of heat. Therefore, temperature adjustment can be performed more finely. Thus, since the temperature of the temperature control jacket 48 can be adjusted more finely, the temperature of the storage battery 71 can be adjusted more finely.

(39) Ninth Embodiment A hot water supply system 900 according to a ninth embodiment will be described with reference to the drawings.

  In FIG. 19, the schematic block diagram of the hot water supply system 900 which concerns on 9th Embodiment of this invention is shown.

(40) Overall configuration A hot water supply system 900 includes a heat pump unit 901 including a refrigerant circuit 920 similar to the hot water supply system 300 according to the third embodiment of the present invention, and a hot water storage unit 903 including a hot water storage circuit 930 and a temperature adjustment circuit 40e. I have. Since the hot water supply system 900 has substantially the same configuration as the hot water supply system 900, the description of the portion having the same configuration as the hot water supply system 900 will be omitted, and the description will focus on the different portions.

(41) Detailed configuration (41-1) Temperature control circuit 40h
The temperature adjustment circuit 40h is a circuit provided separately from the boiling forward pipe 31, and is mainly a circuit for adjusting the temperature of the storage battery 71 and the switching element storage portion 72, and includes a pump 934, water A pipe 941 is provided. In the temperature control circuit 40h, water existing in the hot water storage tank 35 circulates as a heat medium.

  The water pipe 941 extends from the lower side of the hot water storage tank 35 and is connected so as to pass through the inside of the pump 934 and the temperature adjustment jacket 48 and return to a different part below the hot water storage tank 35.

  The temperature adjustment circuit 40g is the same as the hot water supply system 300 according to the third embodiment described above. Although not particularly limited, in the present embodiment, water circulates inside the temperature control circuit 40g.

(42) Features of Ninth Embodiment In the hot water supply system 900 of the ninth embodiment, both the temperature adjustment circuit 40h and the temperature adjustment circuit 40g pass through the temperature adjustment jacket 48. For this reason, it is possible to adjust the temperature of the temperature adjustment jacket 48 using both the amount of heat of water flowing through the temperature adjustment circuit 40h and the amount of heat of water flowing through the temperature adjustment circuit 40g. For this reason, since the pipes and circuits passing through the inside of the temperature control jacket 48 can be adjusted with two types of heat, compared to the case of the temperature control circuit 40h alone or the temperature control circuit 40g alone. The temperature can be adjusted more finely. Thus, since the temperature of the temperature control jacket 48 can be adjusted more finely, the temperature of the storage battery 71 can be adjusted more finely.

(43) Other Embodiments Each of the above-described embodiments may be an embodiment obtained by being modified as described below.

(43-1) Other Embodiment A
In the first to sixth embodiments and the eighth and ninth embodiments, the case where the lower end of the hot water storage tank 35 and the upper portion of the storage battery 71 are in direct contact with each other has been described as an example.

  On the other hand, the thermal contact mode between the hot water storage tank 35 and the storage battery 71 is not particularly limited. For example, as shown in FIG. 20, a hot conductive member H is stored as a member having high thermal conductivity. By interposing between the tank 35 and the storage battery 71, the two may be indirectly contacted. The heat conducting member H can be a member made of an aluminum alloy having a high thermal conductivity, for example. The heat conduction member H has an upper end in direct contact with the lower end of the hot water storage tank 35, and a lower end in direct contact with the upper end of the storage battery 71.

  Thereby, since the heat of the lower part of the hot water storage tank 35 is efficiently transmitted to the storage battery 71 via the heat conducting member H, the temperature of the storage battery 71 can be easily adjusted.

  Moreover, when the shape of the lower end of the hot water storage tank 35 and the shape of the upper end of the storage battery 71 do not correspond to each other and a gap is generated as it is, by devising the shape of the heat conduction member H described above, The heat transfer rate can be improved. That is, the shape of the upper end of the heat conducting member H can be made to correspond to the shape of the lower end of the hot water storage tank 35, while the shape of the lower end of the heat conducting member H can be made to correspond to the shape of the upper end of the storage battery 71.

(43-2) Other embodiment B
In the other embodiment A described above, the heat conducting member H is interposed between the hot water storage tank 35 and the storage battery 71 and the both are indirectly contacted.

  However, the usage example of the heat conducting member H provided below the hot water storage tank 35 is not limited thereto.

  As shown in FIG. 21, for example, like the hot water supply system 700 of the seventh embodiment, the upper part of the storage battery 71 is arranged to directly contact the lower part of the temperature control jacket 48, and the temperature control jacket 48 Even when the lower part of the hot water storage tank 35 and the storage battery 71 are not in direct contact with the upper part, the switching element storage part 72 is disposed in direct contact with the upper part. In the other embodiment B, specifically, the heat conducting member H may be modified to be disposed between the hot water storage tank 35 and between the inverter 73 and the converter 74.

(43-3) Other Embodiment C
In the hot water supply system of each of the embodiments described above, as shown in FIG. 22, the photovoltaic power generation panel S may be attached to the outer surface of the casing 3 a of the hot water storage units 3 to 703.

  When the solar power generation panel S is provided in this way, the electricity generated by the solar power generation panel S receiving sunlight is generated as drive power for the heat pump unit and / or drive power for the hot water storage unit. It may be used as Further, when not used as driving power for the heat pump unit or driving power for the hot water storage unit, it may be used for charging the storage battery 71.

  Here, since the power generation by the solar power generation panel S is performed in the daytime when sunlight is irradiated, the process of charging the storage battery 71 with the electricity generated by the solar power generation panel S is also performed in the daytime. For this reason, the storage battery 71 tends to generate heat during the daytime when the above charging is performed and a current flows. On the other hand, the operation may be performed so that water and / or the refrigerant pass through the temperature adjustment jacket 48 during the time when the storage battery 71 is charged. For example, the compressor 21, the boiling pump 34, the pump 45, the pump 634, the pump 734, and the pump 934 may be driven to perform boiling in the time zone in which the storage battery 71 is charged. Here, the amount of water and / or refrigerant passing through the temperature adjustment jacket 48 at the time of boiling is not particularly limited as long as the temperature of the temperature adjustment jacket 48 can be maintained in a desired temperature range. A small passing amount may be used. The method for adjusting the amount of water and / or refrigerant passing through the temperature adjustment jacket 48 is not particularly limited, and can be performed, for example, by adjusting the valve opening or adjusting the output of the variable flow pump. The charging of the storage battery 71 may be grasped by detecting that the temperature of the storage battery 71 rises to a predetermined temperature or more, and the time during which the power generation by the solar power generation panel S is performed. You may grasp | ascertain by collecting the information of a sunlight irradiation time slot | zone by assuming that it is the same as a belt | band | zone. At this time, the electricity obtained by the power generation by the photovoltaic power generation panel S is used for the operation for passing water and / or refrigerant through the temperature control jacket 48 at the same time as the power generation, and the remaining power. You may make it use electricity for the electrical storage to the storage battery 71. FIG.

  When the solar power generation panel S is employed as described above, not only can the electric power be used as described above, but the solar power generation panel S is provided so as to cover the outer periphery of the hot water storage tank 35. Thus, the degree to which the thermal energy from sunlight is used to increase the temperature in the casing 3a can be suppressed and used as electrical energy generated by the photovoltaic power generation panel S. Thereby, it suppresses that the temperature inside casing 3a rises with sunlight, and it becomes easy to maintain the temperature of storage battery 71 in the suitable temperature range.

(43-4) Other Embodiment D
In the above embodiment, the case where the inverter 73 is used as an inverter that controls the frequency of the compressor 21 and the converter 74 is used as a converter that controls charging and discharging of the storage battery 71 has been described as an example.

  On the other hand, the use of the inverter 73 is not limited to the inverter that performs frequency control of the compressor. For example, in the hot water supply system in which power generation by the solar power generation panel S is performed as shown in the other embodiment C, In order to process the direct current obtained by the photovoltaic power generation panel S, an inverter 73 and a converter 74 may be used. In this case, although not particularly limited, for example, the voltage of the electric power obtained by the photovoltaic power generation panel S is adjusted by the converter 74, and the direct current is converted into the alternating current by the inverter 73 functioning as a power conditioner. May be. The use of electricity obtained by processing as described above is not particularly limited. For example, it may be used in a heat pump unit, a hot water storage unit, or used in other electrical equipment. Also good.

(43-5) Other embodiment E
In the eighth embodiment and the ninth embodiment, either the boiling forward pipe 31 or the temperature adjustment circuit 40h and the temperature adjustment circuit 40g pass through the temperature adjustment jacket 48, and the temperature adjustment circuit The case where water is circulating inside 40 g has been described as an example. That is, the case where all the fluids passing through the inside of the temperature control jacket 48 are common with water has been described as an example.

  On the other hand, the heat medium passing through the temperature control circuit 40g may be a fluid having a heat capacity different from that of water, and may be, for example, an aqueous solution of ethylene glycol, slurry ice, or a refrigerant. That is, the temperature adjustment jacket 48 may be in a hybrid form in which a plurality of different types of fluids such as water and a fluid other than water flow.

  Thus, by adopting the hybrid form, the temperature of the temperature adjustment jacket 48 can be adjusted more finely, and as a result, the temperature of the storage battery 71 can be adjusted more finely. Further, the temperature of the storage battery 71 can be adjusted more appropriately by appropriately selecting a medium that circulates through the temperature adjustment circuit 40g according to the environment in which the hot water supply system is installed.

(43-6) Other embodiment F
In the temperature control circuit 40e of the sixth embodiment, the temperature control circuit 40f of the seventh embodiment, and the temperature control circuit 40h of the ninth embodiment, the circuit is provided separately from the boiling forward pipe 31, An example in which water pipes 641, 741, 941 extending from below the hot water storage tank 35 and passing through the insides of the pumps 634, 734, 934 and the temperature control jacket 48 and returning to different parts below the hot water storage tank 35 are provided. And explained. That is, the connection positions of the upstream ends of the water pipes 641, 741, 941 and the hot water storage tank 35, and the connection positions of the downstream end and the hot water storage tank 35 are different positions and height positions below the hot water storage tank 35. In the above description, the case of the same level is taken as an example.

  On the other hand, as shown in FIG. 23, the connection position P1 between the upstream ends of the water pipes 641, 741, 941 and the hot water storage tank 35 and the connection position P2 between the downstream end and the hot water storage tank 35 are as follows. The positions may be different from each other at the lower position and the height position may be different.

  Specifically, the connection position P2 between the downstream ends of the water pipes 641, 741, 941 and the hot water storage tank 35 is higher than the connection position P1 between the upstream ends of the water pipes 641, 741, 941 and the hot water storage tank 35. Preferably, the position is 10-30% below the hot water storage tank 35. In this way, the position of the downstream end of the water pipes 641, 741, 941 is made higher than the upstream end, thereby returning the water whose temperature has risen through the temperature adjustment jacket 48 into the hot water storage tank 35. Can be increased. Thereby, it becomes possible to suppress the disturbance of the temperature distribution inside the hot water storage tank 35 to be small.

(43-7) Other embodiment G
In the eighth embodiment and the ninth embodiment, the temperature adjustment jacket 48, the high temperature side heat exchanger 26, and the low temperature side heat exchanger 27 through which a plurality of pipes constituting mutually independent flow paths pass are used. An example was given and explained.

  Here, the temperature control jacket 48, the high temperature side heat exchanger 26, and the low temperature side heat exchanger 27 are common in that a plurality of pipes constituting mutually independent flow paths pass through the inside. Therefore, structurally the same shape and dimensions may be employed. In this case, since it becomes possible to share components in the temperature adjustment jacket 48, the high temperature side heat exchanger 26, and the low temperature side heat exchanger 27, the cost can be reduced.

(43-8) Other embodiment H
The refrigerant flowing through the refrigerant circuit of each of the above embodiments is not particularly limited, and may be an HFC refrigerant such as R32 or R401A.

(43-9) Other Embodiment I
In each of the above embodiments, the case where a lithium ion battery is used as the storage battery 71 has been described as an example. However, the storage battery 71 is not limited to this, and may be another type of storage battery such as a nickel metal hydride battery.

(43-10) Other embodiment J
In each of the above embodiments, the embodiment has been described in which one of the storage battery 71 and the switching element storage portion 72 is sandwiched from above and below between the lower portion of the hot water storage tank 35 and the upper portion of the temperature adjustment jacket 48.

  On the other hand, both the storage battery 71 and the switching element storage part 72 can also be made into the embodiment arrange | positioned between both so that the lower part of the hot water storage tank 35 and the upper part of the temperature control jacket 48 may be contact | connected.

(43-11) Other embodiment K
In the said embodiment, although the drive timing of the pump 45 of 3rd-5th embodiment, the pump 634 of 6th Embodiment, and the pump 734 of 7th Embodiment was demonstrated without specifically limiting, For example, as the storage battery 71 When adopting a type that generates heat during charging, the control unit may perform control so that the pump is driven by grasping the charging time. In this case, damage to the storage battery 71 due to heat generation during charging of the storage battery 71 can be reduced.

(43-12) Other embodiment L
As long as there is no reason to inhibit each other, the above embodiments may be appropriately combined with each other as long as those skilled in the art can.

  The present invention is useful for a heat pump hot water supply system including a storage battery.

1, 201, 301, 401, 501, 601, 701, 801, 901 Heat pump unit 20, 220, 220B, 320, 420, 520, 620, 720, 820, 920 Refrigerant circuit (heat pump)
22 Water heat exchanger (radiator)
23 Expansion valve (expansion mechanism)
24 Air heat exchanger (evaporator)
30, 230 Hot water storage circuit (unheated water circuit, second unheated water circuit)
35 Hot water storage tank 40 Temperature control circuit (second temperature control unit, third temperature control unit)
40a Temperature control circuit (first temperature control unit, direct temperature control circuit)
40b, 40c Temperature control circuit (first temperature control unit)
40d Temperature control circuit (first temperature control unit, fourth temperature control unit, fifth temperature control unit)
40e Temperature control circuit (second temperature control unit, third temperature control unit)
40f Temperature control circuit (second temperature control unit, third temperature control unit)
40g Temperature control circuit (first temperature control unit, indirect temperature control circuit)
40h Temperature control circuit (second temperature control unit, third temperature control unit)
40j Temperature control circuit (second temperature control unit)
45 Pump 48 Temperature control jacket (first temperature control unit, second temperature control unit, third temperature control unit, fourth temperature control unit, fifth temperature control unit)
71 Storage Battery 71a Temperature Sensor 72 Switching Element Storage Unit 73 Inverter 73a Inverter Switching Element 74 Converter 74a Converter Switching Element 100, 200, 200A, 200B, 300, 400, 500, 600, 700, 800, 900 Hot Water Supply System 641 Water Piping (Second unheated water circuit)
741 Water piping (second unheated water circuit, third unheated water circuit, fourth unheated water circuit)
830 Hot water storage circuit (first unheated water circuit, second unheated water circuit)
941 Water piping (first unheated water circuit, second unheated water circuit)
H Heat conduction member S Solar panel

JP 2010-145072 A

Claims (16)

A heat pump ( 820, 920) including a compressor, a radiator, an expansion mechanism, an evaporator, and a refrigerant circuit in which the refrigerant circulates ;
A hot water storage tank (35) for storing hot water that is supplied with unheated water below and that stores hot water generated using heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top;
A storage battery (71) for storing at least the electric power used by the heat pump;
It is arranged so as to be in thermal contact with at least a part of the storage battery, and the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor is directly A first temperature adjusting unit (48, 40 g) that adjusts the temperature of the storage battery using the target or indirectly,
A first unheated water circuit (830, 941) configured to circulate unheated water below the hot water storage tank;
A second temperature adjusting unit (48, 40, 40h) for adjusting the temperature of the storage battery using heat of water flowing through the first unheated water circuit;
With
At least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank ,
The first temperature adjustment unit circulates a temperature adjustment medium that performs heat exchange with heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor, Having an indirect temperature control circuit (40 g) which is a circuit independent of the first unheated water circuit,
Hot water supply system (800, 900). The temperature control medium is a heat medium other than water.
The hot water supply system (800, 900) according to claim 1 . A heat pump (20, 220 , 220B, 320 , 420, 520 , 820 , 920) including a compressor, a radiator, an expansion mechanism, an evaporator, and a refrigerant circuit in which the refrigerant circulates ;
A hot water storage tank (35) for storing hot water that is supplied with unheated water below and that stores hot water generated using heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top;
A storage battery (71) for storing at least the electric power used by the heat pump;
It is arranged so as to be in thermal contact with at least a part of the storage battery, and the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor is directly A first temperature adjusting unit (48, 40a, 40b, 40c, 40d, 40g) that adjusts the temperature of the storage battery using the target or indirectly,
With
The upper part of the storage battery (71) is in thermal contact with the lower part of the hot water storage tank,
The lower part of the storage battery (71) is in thermal contact with the first temperature control part (48, 40a, 40b, 40c, 40d, 40g),
Hot water supply system (200, 200A, 200B, 300 , 400 , 500, 800 , 900). A heat pump (20, 220, 220B, 320, 420, 520, 620, 720, 820, 920) including a compressor, a radiator, an expansion mechanism, an evaporator, and a refrigerant circuit in which the refrigerant circulates ;
A hot water storage tank (35) for storing hot water that is supplied with unheated water below and that stores hot water generated using heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top;
A storage battery (71) for storing at least the electric power used by the heat pump;
It is arranged so as to be in thermal contact with at least a part of the storage battery, and the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor is directly A first temperature adjusting unit (48, 40a, 40b, 40c, 40d, 40g) that adjusts the temperature of the storage battery using the target or indirectly,
With
At least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank ,
The heat pump further includes an inverter (73),
The switching element (73a) of the inverter is installed so as to be in thermal contact with the first temperature control unit (48, 40a, 40b, 40c, 40d, 40g).
Hot water supply system (200, 200A, 200B, 300 , 400 , 500, 800 , 900). The inverter (73) is disposed below the first temperature control unit (48, 40a, 40b, 40c, 40d , 40g),
The hot water supply system according to claim 4 (200, 200A, 200B, 300 , 400 , 500, 800 , 900). A heat pump (20, 220, 220B, 320, 420, 520, 620, 720, 820, 920) including a compressor, a radiator, an expansion mechanism, an evaporator, and a refrigerant circuit in which the refrigerant circulates ;
A hot water storage tank (35) for storing hot water that is supplied with unheated water below and that stores hot water generated using heat of the refrigerant flowing through the radiator in the refrigerant circuit at the top;
A storage battery (71) for storing at least the electric power used by the heat pump;
It is arranged so as to be in thermal contact with at least a part of the storage battery, and the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor is directly A first temperature adjusting unit (48, 40a, 40b, 40c, 40d, 40g) that adjusts the temperature of the storage battery using the target or indirectly,
A converter (74) for controlling charging and discharging of the storage battery;
With
At least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank ,
The switching element (74a) of the converter is disposed so as to be in thermal contact with the first temperature control unit (48, 40a, 40b, 40c, 40d, 40g).
Hot water supply system (200, 200A, 200B, 300 , 400 , 500, 800 , 900). The converter (74) is disposed below the first temperature control unit (48, 40a, 40b, 40c, 40d , 40g),
The hot water supply system according to claim 6 (200, 200A, 200B, 300 , 400 , 500, 800 , 900). Heat pumps (20 , 220 , 220B, 620 , 720, 820 , 920),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
A second unheated water circuit (30, 230, 641, 741, 830, 941) configured to circulate unheated water below the hot water storage tank;
A third temperature adjustment unit (48, 40, 40e, 40f, 40h) for adjusting the temperature of the storage battery using heat of water flowing through the second unheated water circuit;
With
At least a part of the storage battery is disposed so as to be in thermal contact with a lower part of the hot water storage tank ,
Hot water supply system (100 , 200A, 200B, 600, 700, 800, 900). The heat pump has a refrigerant circuit in which a refrigerant circulates including a compressor, a radiator, an expansion mechanism, and an evaporator,
The hot water stored above the hot water storage tank is generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit,
The refrigerant circuit is an independent circuit from the second unheated water circuit, so that the heat of the refrigerant after passing through the radiator and before being sucked into the compressor is transmitted to the storage battery. A direct temperature adjustment circuit (40a) for adjusting the temperature of the storage battery in thermal contact with the battery;
The hot water supply system (200A, 200B) according to claim 8 . The third temperature adjusting unit (48, 40f) is disposed below the hot water storage tank,
The upper part of the storage battery is in thermal contact with the third temperature control unit,
The hot water supply system (700) according to claim 8 . A heat pump ( 720 ),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
A third unheated water circuit (741) configured to circulate unheated water below the hot water storage tank;
A fourth temperature adjusting unit (48, 40f) for adjusting the temperature of the storage battery using heat of water flowing through the third unheated water circuit;
With
At least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank ,
The heat pump further includes an inverter (73),
The switching element (73a) of the inverter is arranged so as to be in thermal contact with the lower part of the hot water storage tank and also with the upper part of the fourth temperature adjusting unit. ,
The upper part of the storage battery is disposed so as to be in thermal contact with the lower part of the fourth temperature control unit,
Hot water supply system ( 700 ). A heat pump ( 720 ),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
A fourth unheated water circuit (741) configured to circulate unheated water below the hot water storage tank;
A fifth temperature adjusting unit (48, 40f) for adjusting the temperature of the storage battery using heat of water flowing through the fourth unheated water circuit;
A converter (74) for controlling charging and discharging of the storage battery;
With
It is placed in thermal contact with at least part the lower part of the hot water storage tank of the storage battery,
The switching element (74a) of the converter is disposed so as to be in thermal contact with the lower part of the hot water storage tank and also with the upper part of the fifth temperature adjusting unit. ,
The upper part of the storage battery (71) is disposed so as to be in thermal contact with the lower part of the fifth temperature control unit,
Hot water supply system ( 700 ). Heat pumps (20, 220, 220B, 320, 420, 520, 620, 720, 820, 920),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
A solar power generation panel (S) that is installed so as to cover the hot water storage tank and the storage battery and receives sunlight to generate power;
With
At least a part of the storage battery is arranged so as to be in thermal contact with the lower part of the hot water storage tank ,
The storage battery is charged with electric energy obtained by the solar power generation panel generating power,
Hot water supply system (100, 200, 200A, 200B, 300, 400, 500, 600, 700, 800, 900). Heat pumps (20, 220, 220B, 320, 420, 520, 620, 720, 820, 920),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
A solar power generation panel (S) that is installed so as to cover the hot water storage tank and the storage battery and receives sunlight to generate power;
With
It is placed in thermal contact with at least part the lower part of the hot water storage tank of the storage battery,
For the driving of the heat pump, electrical energy obtained by generating power from the photovoltaic power generation panel is used.
Hot water supply system (100, 200, 200A, 200B, 300, 400, 500, 600, 700, 800, 900). Heat pumps (20, 220, 220B, 320, 420, 520, 620, 720, 820, 920),
A hot water storage tank (35) in which unheated water is supplied below and hot water heated by the heat pump is stored above,
A storage battery (71) for storing at least the electric power used by the heat pump;
With
A heat conducting member in which at least a part of the storage battery is in direct contact with the lower part of the hot water storage tank or in direct contact with at least a part of the storage battery and the lower part of the hot water storage tank Through which at least a part of the storage battery is indirectly in contact with the lower part of the hot water storage tank,
Hot water supply system (100, 200, 200A, 200B, 300, 400, 500, 600, 700, 800, 900). The heat pump has a refrigerant circuit in which a refrigerant circulates including a compressor, a radiator, an expansion mechanism, and an evaporator,
The hot water stored above the hot water storage tank is generated using the heat of the refrigerant flowing through the radiator in the refrigerant circuit,
It is arranged so as to be in thermal contact with at least a part of the storage battery, and the heat of the refrigerant after passing through the radiator in the refrigerant circuit and before being sucked into the compressor is directly A first temperature adjustment unit (48, 40a, 40b, 40c, 40d, 40g) that adjusts the temperature of the storage battery by using or indirectly.
The hot water supply system according to claim 15 (200, 200A, 200B, 300, 400, 500, 800, 900).

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