JP5611676B2 - Heat pump type water heater - Google Patents

Description

  The present invention relates to a heat pump type hot water supply apparatus using a heat pump apparatus, and more particularly to a heat pump type hot water supply apparatus that has high thermal efficiency and can use cold air generated during heating by the heat pump apparatus.

  A heat pump absorbs heat from a low-temperature heat source through a refrigerant and pumps this heat up to a high-temperature place. Conventionally, a heat pump has been used in air conditioners and water heaters. As a system using such a heat pump, various devices have been devised so far to save energy, for example, by effectively using late-night power (see, for example, Patent Document 1).

JP 2000-257975 A

  At present, there is an increasing demand for such energy saving, and not only improving the heat pump as in the conventional heat pump system to improve the energy utilization efficiency of the heat pump itself, but also the exhaust of the heat pump. For example, it is also desired to contribute to energy saving by increasing energy use efficiency as a whole of a building structure or the like.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the heat pump type hot water supply apparatus which can improve energy utilization efficiency as a whole and can aim at energy saving.

In order to solve such a problem, a heat pump hot water supply apparatus according to claim 1 connects a first heat exchanger, a compressor, a second heat exchanger, and an expansion valve with a pipe, and the pipe. A heat pump type hot water supply device using a heat pump device that circulates a refrigerant therein, installs the second heat exchanger in a hot water storage tank, and heats the water in the hot water storage tank to produce hot water, the first heat exchanger is installed in a hermetically sealed container, with an air compressor for supplying high pressure air to the container, said container, characterized Rukoto provided with cooling means for dissipating the internal gas It is said. As the cooling means, a heat exchanger and a cooling radiator are preferable.

The heat pump type hot water supply apparatus of the present invention configured as described above is the step of producing the warm water by taking the atmospheric heat by the heat pump apparatus, and installing the first heat exchanger for taking the atmospheric heat in the sealed container, Since this container is supplied with high-pressure air by an air compressor and the inside of the container is in a high temperature state, a refrigerant containing heat taken in by the first heat exchanger is compressed by the compressor to generate the second heat. By exchanging heat with the exchanger, the water in the hot water storage tank can be efficiently heated to warm water. Moreover, since the cold air discharged | emitted with a 1st heat exchanger at the time of hot water manufacture is stored in the airtight container, even when warm water manufacture takes a long time, since the stored cold air can be thermally radiated, it is stable. Hot water can be produced.

  As a preferred specific embodiment, the heat pump type hot water supply apparatus according to claim 2 is characterized in that the air compressor sucks air through an air filter. According to this structure, the air in the sealed container which accommodates the 1st heat exchanger can be cleaned, and heat exchange can be performed efficiently.

In the heat pump type hot water supply apparatus according to claim 3 of the present invention, the container is characterized by being covered with a thermal barrier coating. According to the configuration of this, the heat release of the air inside the insulation coated container is prevented.

  Furthermore, in another preferred embodiment of the present invention, in the heat pump hot water supply device according to claim 4, the container is connected to an air tank by piping, and the compressed air in the container is supplied to the air tank. The air tank includes an expansion valve that ejects compressed internal air. According to this configuration, it is possible to cool the interior of the room by storing the high-pressure cold air generated during the production of hot water in the air tank and ejecting the stored high-pressure cold air from the expansion valve to the room in the building.

  Moreover, the heat pump type hot water supply apparatus according to claim 5 of the present invention is characterized in that an opening / closing valve is provided in a pipe connecting the container and the air tank. According to this configuration, the supply of the high-pressure cold air into the air tank can be stopped by closing the on-off valve at a time when cooling is not necessary.

  Furthermore, the heat pump hot water supply apparatus according to claim 6 of the present invention is characterized in that the expansion valve has at least one of a deodorizing function, an aroma function, an ion releasing function, a humidifying function, and an oxygen releasing function. Yes. According to this configuration, when high-pressure cold air is jetted into a room or the like in a building to perform cooling, at least one of a deodorizing function, an aroma function, an ion releasing function, a humidifying function, and an oxygen releasing function can be performed. This can make the living space comfortable.

  In the heat pump type hot water supply apparatus of the present invention, since the heat pump apparatus for hot water supply is arranged outdoors, the cold air generated from the heat pump main body can be taken into the building and the temperature inside the building can be lowered. It is possible to assist the air conditioning by using the cold air discharged to the outside. Thereby, energy utilization efficiency can be enhanced as a whole, and energy saving can be achieved.

The principal part block diagram of one Embodiment of the heat pump type hot-water supply apparatus which concerns on this invention. The principal part block diagram of other embodiment of the heat pump type hot-water supply apparatus which concerns on this invention.

  Hereinafter, an embodiment of a heat pump type hot water supply apparatus according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a main part configuration diagram of a heat pump hot water supply apparatus using the heat pump apparatus according to the present embodiment.

  In FIG. 1, a heat pump hot water supply apparatus connects a first heat exchanger 1, a compressor 2, a second heat exchanger 3, and an expansion valve 4 with a pipe 5, and circulates a refrigerant in the pipe. A heat pump device A is used that installs the second heat exchanger 3 in the hot water storage tank 6 and heats the water in the hot water storage tank to produce hot water. The first heat exchanger 1 functions as an evaporator, and the second heat exchanger 3 functions as a condenser. In the heat pump apparatus A, the hot water storage tank 6 in which the second heat exchanger 3 is installed is installed in the building, and the first heat exchanger 1, the compressor 2, and the expansion valve 4 are installed outside the building.

  In the heat pump device A, a refrigerant is injected as a circulating fluid into the pipe 5, the injected refrigerant is compressed by the compressor 2 and conveyed to the second heat exchanger 3, and the water in the hot water storage tank 6 is heat-exchanged. Is heated to reach the expansion valve 4, expanded by the expansion valve, and returned to the first heat exchanger 1. In this cycle, heat is dissipated by the second heat exchanger 3 and heat is absorbed by the first heat exchanger 1. As the refrigerant, chlorofluorocarbon, carbon dioxide, or the like is used.

  The hot water storage tank 6 installed in the building is provided with a heat insulating coating, and heat dissipation of the hot water heated by the heat pump device A and stored therein is prevented. A hot water supply pipe 7 for supplying water to the hot water storage tank 6 is connected to the lower part of the hot water storage tank 6, and a hot water supply pipe 8 is connected to the upper part of the hot water storage tank 6. (Not shown). A second heat exchanger 3 for heating is installed at an intermediate position of the hot water storage tank 6. In addition, you may comprise the hot water supply piping 8 so that the hot water in the hot water storage tank 6 may be circulated like illustration. In this case, it is preferable to use a pump (not shown) that circulates hot water and to keep the hot water temperature constant using a reheating device (not shown).

  In the heat pump type hot water supply apparatus of the present embodiment, the first heat exchanger 1 is installed outdoors, and the first heat exchanger 1 is installed in a heat exchange tank 9 which is a container provided with a heat insulating coating. . The heat exchange tank 9 is a vessel having a circular cross section, the first heat exchanger 1 is installed at the upper part of the tank 9, and the first heat exchanger 1 is curved along an arc at the upper part of the heat exchange tank 9. It is formed in the shape. For this reason, the 1st heat exchanger 1 becomes a structure located in an upper high temperature part, when temperature distribution is formed in the heat exchange tank 9. FIG.

  A pipe 10 is connected to the heat exchange tank 9, and an air filter 11 is installed at the open end of the pipe 10. An air compressor 12 for sending compressed air into the tank 9 is installed at an intermediate portion of the pipe 10. Thereby, the air filtered by the air filter 11 is compressed in the heat exchange tank 9 by the air compressor 12, and high-temperature and high-pressure air is supplied into the heat exchange tank 9. As the air filter 11, an appropriate filter such as one having high filtration performance can be used.

  A third heat exchanger 13 is installed in the heat exchange tank 9 and is connected to a cooling radiator 14 installed outside the heat exchange tank 9 by a pipe 15. A refrigerant is injected into a pipe connecting the third heat exchanger 13 and the cooling radiator 14 and circulates. You may comprise so that the pump which circulates a refrigerant | coolant in the piping 15 may be installed. The pipe 15 is connected to an on-off valve 16 for preventing the refrigerant from circulating. The heat exchanger 13, the cooling radiator 14, and the pipe 15 constitute a preliminary cooling device as a cooling means.

  The heat exchange tank 9 is connected to an air tank 18 by a pipe 17. The air tank 18 is also provided with a heat insulating coating on the surface to prevent heat release from the air inside. An open / close valve 19 for preventing air flow between the heat exchange tank 9 and the air tank 18 is connected to the pipe 17, and compressed air from the heat exchange tank 9 is supplied into the air tank 18 by opening the open / close valve 19. It can be configured. When not releasing cool air to each room in a building such as a house described later, the on-off valve 19 is closed.

  A plurality of pipes 20, 20... Are connected from the air tank 18, open / close valves 21, 21... Are connected to the respective pipes, and expansion valves 22, 22. By opening the on-off valve 21, the compressed air in the air tank 18 can be discharged into the room. Each expansion valve is connected to a deodorizer 23 having a deodorizing function, an aroma apparatus 24 having an aroma function, a humidifier 25 having a humidifying function, and the like. In addition to the device having the above function, a device having an ion releasing function, a device having an oxygen releasing function, or the like can be connected to the expansion valve 22. The expansion valve 22 is installed for each room such as a house and a room such as a bedroom, and the compressed air in the air tank can be discharged to each room.

  The operation of the heat pump type hot water supply apparatus of the present embodiment configured as described above will be described below. When the heat pump device A is activated, the refrigerant is compressed by the compressor 2, circulates through the second heat exchanger 3, the expansion valve 4, and the first heat exchanger 1 through the pipe 5 and returns to the compressor 2. At this time, the first heat exchanger 1 absorbs heat from the air in the heat exchange tank 9, dissipates heat in the second heat exchanger 3, heats the water in the hot water storage tank 6, and expands in the expansion valve 4. Return to the first heat exchanger 1.

  In the heat pump hot water supply apparatus of the present embodiment, the air compressor 12 is activated and the air sucked from the air filter 11 is compressed and stored in the heat exchange tank 9 as high temperature and high pressure. The heat absorption in the heat exchanger 1 is performed efficiently. That is, not only the heat in the heat exchange tank 9 that has been compressed and high temperature is taken away by a heat pump, but also high-efficiency hot water is supplied, and high-temperature and low-temperature air is obtained in the heat exchange tank 9. Further, dust and the like are not clogged between the fins of the heat exchanger, and efficient heat exchange is possible. In this case, the compressor capacity of the air compressor 12 is preferably 0.8 to 1.4 MPa, and the pressure in the heat exchange tank 9 is set to about 0.6 MPa using a pressure reducing valve (not shown). It is preferable.

  The air in the heat exchange tank 9 is high-pressure and low-temperature as described above, and this high-pressure and low-temperature air is supplied to the air tank 18 through the pipe 17 and the opening / closing valve 19. The air in the air tank 18 is released from the expansion valve 22 through the pipe 20 and the opening / closing valve 21 as necessary, and cool air is supplied into the room to lower the room temperature, thereby obtaining a cooler effect. In addition, the expansion valve 22 is installed at a high place in the room, and the cooling effect can be enhanced by lowering the discharged cool air from above. Since the cool air released into the building is supplied through the air filter 11, dust and the like are not released into the room.

  In this way, the high-pressure cold air formed during hot water supply is stored in the air tank 18 and blown out from the cold air outlet of the expansion valve 22 to each room in the building through the duct (pipe 20). In addition, since it is used for cooling, energy utilization efficiency can be improved as a whole and energy can be saved.

  At this time, the deodorizer 23, the fragrance device 24, the humidifier 25 and the like attached to the expansion valve 22 can be operated and supplied into the room, and the living space can be made comfortable. Moreover, since the expansion valve 22 is installed for every room, it is not necessary to supply cold air to a room without a person and to operate various functions, such as a deodorizing function, and it can achieve energy saving. Furthermore, the refrigerator and the refrigerator compartment can be kept at a low temperature by using this high-pressure and low-temperature air. Moreover, cold water can be obtained by discharging the high-pressure and low-temperature air in the air tank 18 into the water.

  When it is not necessary to use the high-pressure and low-temperature air in the heat exchange tank 9 for cooling or the like, the on-off valve 19 of the pipe 20 to the air tank 18 is closed. If the heat pump device A continues to be operated with the on-off valve 19 closed, the air stored in the heat exchange tank 9 becomes even lower in temperature, so that it absorbs heat in the third heat exchanger 13 and is cooled through the pipe 15. 14 radiates heat. The heat radiation from the cooling radiator 14 can be controlled such that the air temperature in the heat exchange tank 9 is measured and activated when the measured value reaches a predetermined value. In addition, when cold air is unnecessary in winter, the cold air may be exhausted to the sky with a chimney so as not to adversely affect the neighborhood, or it may be discharged into the ground or rivers.

  Furthermore, high-pressure and low-temperature air in the air tank 18 can be used as power. For example, it can also be used as a power unit that supplies high-pressure air by piping and uses a piston or a turbine. That is, it can be used for dam waders, elevators, automatic doors, fans, washing machines, centralized vacuum cleaners, and the like.

  Thus, the heat pump type hot water supply apparatus of the present embodiment can be a cold air production type heat pump type hot water supply apparatus that obtains hot water supply and cold air by transferring heat from hot air to hot water. Therefore, hot water can be obtained with high efficiency while always cooling in a warm (for example, tropical) area. However, if there is no need for cold air, such as in areas with four seasons or in cold regions, it can be used in refrigerators or cold water, and the remaining cold air can be discharged.

  In the conventional outdoor heat pump, cold air is filled around the outdoor unit, causing heat pump efficiency degradation and cooling to the surroundings. However, in the present invention, the cold air is exhausted to a place with little influence such as the sky (chimney) or the back. Or by flowing it in the ground or river. Moreover, since the pre-cooling radiator 14 is provided as a separate cooling means in the heat exchange tank 9 so that cold air can be created even when the hot water is full, cold air and high-pressure air will not be interrupted.

  Next, another embodiment of the present invention will be described with reference to FIG. The embodiment shown in FIG. 2 is the same as the above-described embodiment from the heat pump device A to the air tank part, and differs in the configuration in which cold air is supplied from the air tank to each room in the building and injected. In addition, about the structure substantially equivalent to the said embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  In FIG. 2, a pipe 26 is connected to the air tank 18A, and a header 27 is connected to an end of the pipe. A plurality of pipes 20, 20... Are connected from the header 27, and expansion valves 22, 22. In this embodiment, when injecting cold air into each room, it is supplied through the header 27, so that the piping can be easily connected.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, although a hot water storage tank, a heat exchange tank, and an air tank are heat-insulated, it is preferable that the pipes connecting these tanks are also heat-insulated to prevent condensation and the like.

  Moreover, it is preferable that the heat pump hot water supply apparatus includes a control device that controls various valves and the like. When the hot water supply device is started, if the opening / closing valve 19 of the pipe 17 connecting the heat exchange tank 9 and the air tank 18 is closed, the air compressor 12 can quickly raise the temperature in the heat exchange tank 9. The hot water sound in the hot water storage tank 6 can be quickly raised. When the hot water supply becomes steady, the high pressure cold air in the heat exchange tank 9 naturally flows into the air tank 18 by opening the on-off valve 19. If the pressure in the heat exchange tank 9 is higher than the pressure in the air tank 18 and the efficiency is high, it is preferable to use a pressure reducing valve as the on-off valve.

  Although devices such as deodorizers, fragrance devices, ion emitters, humidifiers, and oxygen release devices have been shown as examples provided for expansion valves, these devices are attached to the piping that connects the air tank and expansion valve. When a functional substance, a functional gas, moisture, or the like is released and ejected from the expansion valve, the function may be performed. In addition, one expansion valve 22 is configured to have at least one function, such as a function that the deodorizer 23 and the humidifier 25 are combined to function in one expansion valve 22, and may be ejected to a living room or the like. Good.

  As an application example of the present invention, hot water supply and cold air can be manufactured using a heat pump type hot water supply apparatus, cold air can be used, and hot water supply is manufactured continuously and efficiently by attaching auxiliary cooling means. be able to.

  1: 1st heat exchanger, 2: compressor, 3: 2nd heat exchanger, 4: expansion valve, 5: piping, 6: hot water storage tank, 9: heat exchange tank (insulated container), 11 : Air filter, 12: Air compressor, 13: Third heat exchanger (cooling means), 14: Cooling radiator (cooling means), 15: Piping, 17: Piping, 18, 18A: Air tank, 19: On-off valve 20: piping, 21: on-off valve, 22: expansion valve, 23: deodorizer, 24: aroma, 25: humidifier, A: heat pump device

Claims (6)

A first heat exchanger, a compressor, a second heat exchanger, and an expansion valve are connected by piping, a refrigerant is circulated in the piping, and the second heat exchanger is installed in a hot water storage tank. A heat pump type hot water supply apparatus using a heat pump apparatus for producing hot water by heating water in the hot water storage tank,
The first heat exchanger is installed in a sealed container, and includes an air compressor that supplies high-pressure air to the container.
The container, the heat pump type hot water supply device according to claim Rukoto provided with cooling means for dissipating the gas inside.   The heat pump hot water supply apparatus according to claim 1, wherein the air compressor sucks air through an air filter. The container heat pump type hot water supply apparatus according to claim 1 or 2, characterized in that it is covered with a thermal barrier coating.   The said container is pipe-connected to an air tank, the compressed air in the container is supplied to the air tank, and the air tank includes an expansion valve that ejects the compressed internal air. The heat pump type hot water supply apparatus according to any one of 3 above.   The heat pump type hot water supply apparatus according to claim 4, wherein an on-off valve is installed in a pipe connecting the container and the air tank.   The heat pump hot water supply device according to claim 4 or 5, wherein the expansion valve has at least one of a deodorizing function, an aroma function, an ion releasing function, a humidifying function, and an oxygen releasing function.

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