KR20130048469A - Integrated heat pump system with boiler and air conditioner and its operating methodology for heat pump system - Google Patents

Integrated heat pump system with boiler and air conditioner and its operating methodology for heat pump system Download PDF

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KR20130048469A
KR20130048469A KR1020110113332A KR20110113332A KR20130048469A KR 20130048469 A KR20130048469 A KR 20130048469A KR 1020110113332 A KR1020110113332 A KR 1020110113332A KR 20110113332 A KR20110113332 A KR 20110113332A KR 20130048469 A KR20130048469 A KR 20130048469A
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heat
refrigerant
condenser
evaporator
compressor
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KR1020110113332A
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Korean (ko)
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KR101320189B1 (en
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유연동
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대성히트펌프 주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2519—On-off valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

Abstract

The present invention relates to a boiler and an air conditioner integrated heat pump system and a method of operating the heat pump. More specifically, in the heat pump system, the first compressor is introduced to discharge the first refrigerant of high temperature and high pressure, the first condenser and the first condenser into which the first refrigerant discharged from the first compressor is introduced And an outdoor unit including a four-way valve provided between the first compressor and a first evaporator through which the first refrigerant condensed in the first condenser flows, and an expansion valve provided between the first evaporator and the first condenser. A second line of the second evaporator into which the second refrigerant is introduced to evaporate the second refrigerant and a second compressor of the second refrigerant discharged from the second evaporator and a second high-temperature high pressure refrigerant discharged from the second compressor are separated from each other. An indoor unit including a second condenser configured to be absorbed into the storage water introduced into the storage unit and a heat storage tank storing the storage water discharged from the second condenser; And a fan coil unit in which the circulating water is introduced into the first condenser, exchanges heat with the first refrigerant, and is discharged, and then the heat exchanged circulating water is introduced to cool / heat the room. The present invention relates to a boiler and air conditioner integrated heat pump system having a circulation line flowing into the second refrigerant and flowing back into the first condenser to selectively perform heat storage, cooling, and heating.

Figure P1020110113332

Description

Integrated heat pump system with boiler and air conditioner and its operating methodology for heat pump system}

The present invention relates to a boiler and an air conditioner integrated heat pump system and a method of operating the heat pump. More particularly, the present invention relates to a heat pump system capable of simultaneously performing a boiler and an air conditioner, that is, a heat storage function and a heating and cooling function, and a method of operating the heat pump.

The heat pump system basically connects the discharge port of the compressor, the condenser, the decompression means, the evaporator body, and the suction part of the compressor in order with conduits, and condenses the high-temperature and high-pressure refrigerant gas compressed by the compressor in the condenser to exchange the heat of condensation with the fluid. To generate hot water or to heat indoor air to perform heating and the like. The high and high pressure refrigerant liquid condensed in the condenser is expanded by a decompression means to form a low temperature and low pressure refrigerant liquid, and then flows into the evaporator body and evaporates by a heat source. It becomes a low temperature, low pressure refrigerant gas, the low temperature, low pressure refrigerant gas evaporated from the evaporator body is repeated on the basis of the cycle sucked into the compressor.

Therefore, the heat pump system is operated by the cooling operation to cool the room, or by operating the heating operation to heat the room. Basically, when the heat pump system is operated in a cooling operation, heat is emitted from the outside by the evaporator installed outside through the compressor, and the inside of the condenser installed in the room is absorbed through the decompression means to vaporize the room while cooling the room. do. In addition, when the heating operation is performed, the refrigerant evaporated in the evaporator installed outside is compressed by the compressor, and the compressed high temperature and high pressure refrigerant is condensed in the condenser installed in the room to release heat to the room to heat it.

However, when the heat pump system is operated by heating, the hot water is generated by heating the heat storage tank or heating the room by the heat generated from the condenser. Therefore, there is a problem that it is difficult to simultaneously perform the function of the boiler and the heating and cooling functions. Therefore, a boiler and an air conditioner integrated heat pump system capable of more efficiently heating and cooling at the same time by one system were required.

The present invention has been made to solve the above problems, according to an embodiment of the present invention, the heat generated by the outdoor unit equipped with the first evaporator, the first compressor and the first condenser through the fan coil unit The present invention provides a boiler and an air conditioner integrated heat pump system and an operating method capable of producing hot water by heating a storage water stored in a heat storage tank by an indoor unit having a second evaporator, a second compressor, and a second condenser.

In addition, according to the operating method of the boiler and air conditioner integrated heat pump system of the present invention, the heat storage function can be performed simultaneously with the floor heating, the indoor heating only, the indoor cooling function, or the indoor cooling while performing the heat storage function. It is possible to provide a boiler and an air conditioner integrated heat pump system and a method of providing hot water without operating the outdoor unit and the indoor unit during the day.

In addition, according to an embodiment of the present invention, the plate-type heat exchanger for enthalpy addition is provided on the outdoor unit side to further improve efficiency by heat-exchanging the heat source of the second refrigerant remaining after the heat exchange with the stored water in the second condenser of the indoor unit. Provided is a boiler and air conditioner integrated heat pump system and method of operation.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

An object of the present invention is to provide a heat pump system comprising a first compressor for introducing a first refrigerant and discharging the first refrigerant having a high temperature and high pressure, and a first condenser and first for introducing the first refrigerant discharged from the first compressor. An outdoor unit including a four-way valve provided between the condenser and the first compressor and an expansion valve provided between the first evaporator and the first evaporator and the first condenser into which the first refrigerant condensed in the first condenser flows; A second line of the second evaporator into which the second refrigerant is introduced to evaporate the second refrigerant and a second compressor of the second refrigerant discharged from the second evaporator and a second high-temperature high pressure refrigerant discharged from the second compressor are separated from each other. An indoor unit including a second condenser configured to be absorbed into the storage water introduced into the storage unit and a heat storage tank storing the storage water discharged from the second condenser; And a fan coil unit in which the circulating water is introduced into the first condenser, exchanges heat with the first refrigerant, and is discharged, and then the heat exchanged circulating water is introduced to cool / heat the room. It can be achieved as a boiler and air conditioner integrated heat pump system having a circulation line which is introduced into the heat exchange with the second refrigerant and flows back into the first condenser to selectively perform the heat storage, cooling and heating.

It may further comprise a liquid separator provided between the inlet of the first compressor and the four-way valve.

The method may further include a heat source pump for pumping the circulating water discharged from the second evaporator to the first condenser side.

A first valve provided between the first condenser and the second evaporator to adjust a flow rate of the circulating water; And an inlet valve provided in the inlet of the fan coil unit and a discharge valve provided in the outlet of the fan coil unit to adjust the flow rate of the circulating water flowing into the fan coil unit.

A load pump for discharging the stored water of the heat storage tank to the outside; And a heat storage pump provided at the discharge part of the heat storage tank to pump the storage water of the heat storage tank to the second condenser side.

The second refrigerant passing through the heat storage tank and the heat exchanger and a portion of the first refrigerant discharged from the first condenser further comprises a plate heat exchanger for enthalpy addition, the first refrigerant passed through the plate heat exchanger for enthalpy addition flows into the first compressor The second refrigerant passing through the plate heat exchanger for enthalpy addition may be introduced into the second evaporator.

The first refrigerant may be R-410A, and the second refrigerant may be R-134a.

In another category, an object of the present invention is to provide a method of operating a heat pump system using a boiler and an air conditioner integrated heat pump system, wherein the first pump introduced into the first evaporator is operated when the heat pump system operates to perform a heat storage function. The refrigerant is evaporated, introduced into the first compressor through the four-way valve and the liquid separator, and the first refrigerant compressed and discharged from the first compressor is introduced into the first condenser to absorb the heat of the first refrigerant circulating water; Closing the inlet valve and the outlet valve of the fan coil unit and opening the first valve provided between the first condenser and the second evaporator of the indoor unit to absorb the heat of the circulating water in the second evaporator by the second refrigerant; Introducing a second refrigerant into the second compressor of the indoor unit to discharge the second refrigerant of high temperature and high pressure; Heating the stored water discharged from the heat storage tank by the second refrigerant flowing into the second condenser of the indoor unit; And the second refrigerant passing through the second condenser is introduced into the plate heat exchanger for enthalpy addition, heat exchanged with the first refrigerant, and then introduced into the second evaporator. Can be achieved as a method.

Another object of the present invention is a method of operating a heat pump system using a boiler and an air conditioner integrated heat pump system, in which the heat pump system is operated to perform an indoor heating operation, the second evaporator and the second compressor of the indoor unit. Without operating the first refrigerant flowing into the first evaporator of the outdoor unit is evaporated and flows into the first compressor through the four-way valve and the liquid separator; A first refrigerant discharged from the first compressor flows into the first condenser to absorb heat of the first refrigerant; Circulating water heated in the first condenser is introduced through the inlet valve of the fan coil unit to discharge heat to the room to heat it; And circulating water is discharged through the discharge valve of the fan coil unit and circulated by being introduced into the first condenser through the heat source pump and circulated.

Still another object of the present invention is a method of operating a heat pump system using a boiler and an air conditioner integrated heat pump system, wherein the heat pump system is operated to perform an indoor cooling operation. The first refrigerant passed through the liquid separator of the outdoor unit is introduced into the first compressor and discharged, and then flows into the first evaporator through the four-way valve to release heat to the outside, and the condensed first refrigerant is transferred to the first condenser. After the first condenser absorbs the heat of the circulating water and performs the cycle flowing through the four-way valve and the liquid separator again to the first compressor, the first evaporator of the outdoor unit condenses and the first condenser evaporates. Acting; Circulating water cooled by releasing heat from the first condenser and flowing through the inlet valve of the fan coil unit to absorb heat into the room to cool the room; And circulating water is discharged through the discharge valve of the fan coil unit and circulated by being introduced into the first condenser through the heat source pump and circulated.

Still another object of the present invention is to provide a method of operating a heat pump system using a boiler and an air conditioner integrated heat pump system, in which the heat pump system operates to perform indoor cooling and hot water operation. Without operating the first evaporator and the first condenser, the second refrigerant is introduced into the second evaporator of the indoor unit to absorb heat from the circulating water, and the second refrigerant compressed into the second compressor is compressed by the second compressor. 2 After passing through the condenser, the storage water discharged from the heat storage tank is heated, and then flows into the second evaporator to form a cycle, and the circulation water is introduced into the fan coil unit through the inlet valve to absorb the heat in the room and through the discharge valve. Flowing into the second evaporator and circulating through the heat source valve; Stopping the second evaporator and the second compressor of the indoor unit when the temperature of the stored water stored in the heat storage tank becomes higher than a specific temperature, and stopping the heat storage pump; The first refrigerant passing through the liquid separator of the outdoor unit flows into the first compressor and is discharged, flows into the first evaporator via a four-way valve to release heat to the outside, and the condensed first refrigerant flows into the first condenser. Absorbing the heat of the circulating water from the condenser and performing a cycle introduced through the four-way valve to the first compressor again through the liquid separator to perform the first evaporator condensation and the condenser evaporation; Circulating water cooled by releasing heat from the first condenser to be introduced through the inlet valve of the fan coil unit to absorb and cool the heat to the room; And circulating water is discharged through the discharge valve of the fan coil unit and circulated by being introduced into the first condenser through the heat source valve to circulate.

Accordingly, as described above, according to one embodiment of the present invention, the heat generated by the outdoor unit equipped with the first evaporator, the first compressor, and the first condenser heats the room through the fan coil unit and simultaneously the second evaporator, The indoor unit having a second compressor and a second condenser has an effect of heating hot water stored in the heat storage tank to produce hot water.

In addition, according to the operating method of the boiler and air conditioner integrated heat pump system of the present invention, the heat storage function can be performed simultaneously with the floor heating, the indoor heating only, the indoor cooling function, or the indoor cooling while performing the heat storage function. It is possible to provide hot water without operating the outdoor unit and the indoor unit during the day.

In addition, according to an embodiment of the present invention, the plate-type heat exchanger for enthalpy addition is provided on the outdoor unit side to further improve efficiency by heat-exchanging the heat source of the second refrigerant remaining after the heat exchange with the stored water in the second condenser of the indoor unit. Has an advantage.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, All fall within the scope of the appended claims.

1 is a block diagram of a boiler and an air conditioner integrated heat pump system in which an outdoor unit is operated by a heating operation according to an embodiment of the present invention;
2 is a block diagram of a boiler and an air conditioner integrated heat pump system in which an outdoor unit is operated in a cooling operation according to an embodiment of the present invention;
3 is a configuration diagram of a boiler and an air conditioner integrated heat pump system operated to perform a heat storage function according to a first embodiment of the present invention;
4 is a block diagram of a boiler and an air conditioner integrated heat pump system operated to perform indoor heating according to a second embodiment of the present invention;
5 is a configuration diagram of a boiler and an air conditioner integrated heat pump system operated to perform indoor cooling according to a third embodiment of the present invention;
6 is a block diagram of a boiler and an air conditioner integrated heat pump system operated to perform indoor cooling and heat storage functions according to a fourth embodiment of the present invention;
7 is a block diagram of a boiler and an air conditioner integrated heat pump system operated to perform a floor heating function according to a fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Hereinafter, the boiler and the air conditioner integrated heat pump system 10 according to an embodiment of the present invention will be described for the configuration. First, FIG. 1 illustrates a configuration diagram of a boiler and an air conditioner integrated heat pump system 10 in which an outdoor unit 100 according to an embodiment of the present invention is operated by heating operation. As shown in FIG. 1, the boiler and the air conditioner integrated heat pump system 10 according to an embodiment of the present invention includes an outdoor unit 100, a fan coil unit 200, an indoor unit 300, and a heat storage tank 400. It can be seen that it is configured.

As shown in FIG. 1, the outdoor unit 100 according to an embodiment of the present invention includes a first evaporator 110, a four-way valve 120, a liquid separator 130, a first compressor 140, and a first condenser. 150, an expansion valve 160, an outdoor unit filter 170, a second valve 180, a third valve 190, and a plate heat exchanger 340 for enthalpy addition may be included. The first refrigerant used in the outdoor unit 100 used R-410A in the specific embodiment. When the outdoor unit 100 performs the heating operation, the first refrigerant passing through the liquid separator 130 flows into the first compressor 140 to discharge the first refrigerant, which is a gas of high temperature and high pressure. In addition, the first refrigerant is introduced into the first condenser 150 through the four-way valve 120.

In the first condenser 150, heat exchange occurs between the circulating water introduced through the other line and the first refrigerant. That is, the heat of the first refrigerant of high temperature and high pressure is transferred to the circulating water so that the circulating water is heated. First by a first refrigerant in low-temperature high-pressure having passed through the condenser 150 is passed through the outdoor air filter 170 (during the heating operation the expansion valve 160 becomes closed.) And some through the second valve 180 of the 1 is introduced into the evaporator 110, the rest is introduced into the plate heat exchanger 340 for enthalpy addition through the third valve 190 .

The first refrigerant introduced into the first evaporator 110 through the second valve 180 is evaporated and discharged by a heat source (external air, wastewater, groundwater, etc.), and the discharged first refrigerant is a four-way valve 120. After passing through the liquid separator 130, the first compressor 140 is introduced again. On the other hand, for the enthalpy addition through the third valve 190 The first refrigerant introduced into the plate heat exchanger 340 exchanges heat with the second refrigerant used in the indoor unit 300 which will be described in detail after being introduced through a separate line . The first refrigerant heat-exchanged with the second refrigerant flows back into the first compressor 140 to complete the first refrigerant circulation line of the outdoor unit 100. That is, the core function of the outdoor unit 100 operated by heating operation is to heat the circulating water with the first refrigerant in the first condenser 150.

The circulating water heated by the first condenser 150 of the outdoor unit 100 is discharged from the first condenser 150 and passes through the fan coil unit 200 through the inlet valve 210 to discharge heat to the room. It is heated to, and is introduced into the second evaporator 310 of the indoor unit 300 through the discharge valve 220. Then, the heat source pump 250 is introduced into the first condenser 150 of the outdoor unit 100 to form a circulation line. The power of the circulating water is supplied by the heat source pump 250, and as described later, the inlet valve 210 and the discharge valve 220 are blocked according to the operation mode, and the first valve 230 is opened to open the outdoor unit ( 100 may be configured to generate heat to the second refrigerant in the second evaporator 310 of the indoor unit 300. In addition, the circulation water line may further include a replenishment tank 240 to store the circulation water. That is, the circulating water receives heat from the indoor unit 300 to perform a function of heating the room by the fan coil unit 200 or transferring heat to the second refrigerant of the indoor unit 300.

In addition, the indoor unit 300 uses the second refrigerant R134a in a specific embodiment, and the second refrigerant in the second evaporator 310 of the indoor unit 300 is supplied with heat from the circulating water to be evaporated. The evaporated second refrigerant flows into the second compressor 320 to discharge the second refrigerant, which is a gas of high temperature and high pressure. The second refrigerant of high temperature and high pressure passing through the second compressor 320 passes through the second condenser 330 to heat the storage water introduced into the second condenser 330 in a separate line. The second refrigerant cooled by the stored water is moved to the plate heat exchanger 340 for enthalpy addition installed in the outdoor unit 100 to exchange heat with the first refrigerant, and then to the second evaporator 310 through the indoor unit filter 350. Will flow into.

The storage water absorbing heat from the second refrigerant in the second condenser 330 is stored in the heat storage tank 400 or flows back into the second condenser 330 through the heat storage tank 400 by the heat storage pump 410. do. The storage water is circulated through the second condenser 330 to heat the storage water. Therefore, the stored water heated by the second condenser 330 supplies the hot water to the outside by the load pump 420.

2 is a block diagram of a boiler and an air conditioner integrated heat pump system 10 in which the outdoor unit 100 is operated in a cooling operation according to an embodiment of the present invention. As shown in FIG. 2, when the outdoor unit 100 is operated in a cooling operation, the configuration of the outdoor unit 100 is the same, but the first evaporator 110 performs condensation, and the first condenser 150 evaporates. Will be performed. When the outdoor unit 100 is operated in a cooling operation, the circulation line of the first refrigerant will be described. The first refrigerant having passed through the liquid separator 130 flows into the first compressor 140 so that the first refrigerant of the high temperature and high pressure gas is supplied. It will be discharged. Then, the first refrigerant of high temperature and high pressure is introduced into the first evaporator 110 via the four-way valve 120.

The first refrigerant introduced into the first evaporator 110 emits heat to the outside. It releases heat to the outside and condenses it. When cooling, the second valve 180 is closed, and a portion of the first refrigerant passing through the first evaporator 110 is introduced into the first condenser 150 through the outdoor unit filter 170. The remaining first refrigerant is added to the enthalpy via the third valve 190 After the heat exchange with the second refrigerant introduced through the other line via the plate heat exchanger 340 is introduced into the first compressor (140). In addition, the first refrigerant introduced into the first condenser 150 through the outdoor unit filter 170 absorbs heat from the circulating water in the first condenser 150 to evaporate (vaporize). That is, the circulating water is cooled. The first refrigerant passing through the first condenser 150 is introduced into the first compressor 140 again through the four-way valve 120 and the liquid separator 130. Therefore, the outdoor unit 100 operated in the cooling operation cools the circulating water in the first condenser 150. In addition, the cooled circulating water is discharged from the first condenser 150 to cool the room while passing through the fan coil unit 200 through the inlet valve 210, and the first of the indoor unit 300 through the discharge valve 220. It is introduced into the two evaporator 310.

Hereinafter, an operation method according to each operation mode of the boiler and air conditioner integrated heat pump system 10 described above will be described. First, Figure 3 shows a block diagram of a boiler and air conditioner integrated heat pump system 10 that is operated to perform the heat storage function according to the first embodiment of the present invention.

As shown in FIG. 3, the boiler and air conditioner integrated heat pump system 10 according to an embodiment of the present invention heats and operates the outdoor unit 100 in order to supply hot water by heating the storage water of the heat storage tank 400. , Indoor unit 300 is also to operate. However, the circulating water is operated so as not to flow into the fan coil unit 200. That is, the heat source pump 250 is operated in the circulation water line, and the first valve 230 is opened so that the circulation water is between the outdoor unit 100, the first condenser 150, and the second evaporator 310 of the indoor unit 300. By circulating the water, the inlet valve 210 and the discharge valve 220 are closed to operate the circulating water so as not to enter the fan coil unit 200. Accordingly, the circulation water absorbs the heat of the first refrigerant heated in the outdoor unit 100, and the second refrigerant is absorbed by the second evaporator 310 of the indoor unit 300.

In addition, since the indoor unit 300 is also operated in the first embodiment, the second refrigerant absorbing heat from the circulating water becomes a gas of high temperature and high pressure through the second compressor 320 of the indoor unit 300, and the second condenser. At 330, the heat of the second refrigerant is transferred to the storage water to heat the storage water. The storage water heated in this way is stored in the heat storage tank 400 and the storage water pump 410 is operated so that the storage water is continuously heated while receiving heat of the second refrigerant in the second condenser 330. In addition, the heated water can be supplied according to the user's needs through the load pump 420 of the heat storage tank 400 (that is, in the first embodiment, the first valve 230 = on, inlet valve) (210) and discharge valve 220 = off, heat source pump 250 = on, heat storage pump 410 = on, load pump 420 = operating according to user needs, outdoor unit (100) = heating operation, indoor unit (300) = on, fan coil unit 200 = off.).

4 is a block diagram of a boiler and an air conditioner integrated heat pump system 10 operated to perform indoor heating according to a second embodiment of the present invention. The second embodiment relates to a method of operating a boiler and an air conditioner integrated heat pump system 10 for performing only indoor heating without storing water in the heat storage tank 400 (not storing heat storage function).

As shown in FIG. 4, the outdoor unit 100 performs heating operation, and the indoor unit 300 is not operated (that is, the second evaporator 310 constituting the indoor unit 300, the second compressor 320, The second condenser 330 is not operated). Therefore, heat exchange between the second refrigerant circulating the outdoor unit 100 and the circulating water and heat exchange between the circulating water and the storage water do not occur in the second embodiment.

Since the outdoor unit 100 is heated, the first refrigerant of high pressure and high temperature, which has passed through the first evaporator 110, the liquid separator 130, and the first compressor 140, is condensed in the first condenser 150. Supply to the circulating water. In addition, since the heat source pump 250 is operated in the second embodiment, the circulating water is circulated between the first condenser 150 and the second evaporator 310 of the indoor unit 300 (however, the second evaporator 310). In the heat exchange between the circulating water and the second refrigerant is not generated), the circulating water is heated by absorbing the heat of the first refrigerant in the first condenser 150.

Then, the heated circulating water is introduced into the fan coil unit 200 through the inlet valve 210 to heat the room. The circulating water that supplies heat to the room is discharged through the discharge valve 220 to be supplied with heat by the first refrigerant in the first condenser 150 again (that is, in the second embodiment, the first valve 230). ) = off, inlet valve 210 and discharge valve 220 = on, heat source pump 250 = on, heat storage pump 410 = off, outdoor unit 100 = heating operation, indoor unit 300 = off, fan Coil unit 200 = on).

5 is a block diagram of a boiler and an air conditioner integrated heat pump system 10 which is operated to perform indoor cooling according to a third embodiment of the present invention. The third embodiment of the present invention is the same as the second embodiment described above except that the outdoor unit 100 performs the cooling operation. (Ie, the second evaporator 310, the second compressor 320, and the second condenser 330 constituting the indoor unit 300 are not operated). Therefore, heat exchange between the second refrigerant circulating the outdoor unit 100 and the circulating water and heat exchange between the circulating water and the storage water do not occur in the third embodiment.

That is, since the outdoor unit 100 performs the cooling operation, the first refrigerant of the high pressure and high temperature, which has passed through the liquid separator 130 and the first compressor 140, is condensed in the first evaporator 110, and the first condenser 150. At first, the first refrigerant absorbs the heat of the circulating water and evaporates. Therefore, the circulation water is cooled in the first condenser 150. In addition, since the heat source pump 250 is operated in the third embodiment, the circulating water is circulated between the first condenser 150 and the second evaporator 310 of the indoor unit 300 (however, the second evaporator 310). Heat exchange between the circulating water and the second refrigerant is not generated), and the circulating water is cooled while releasing heat from the first condenser 150 to the first refrigerant.

Then, the cooled circulation water is introduced into the fan coil unit 200 through the inlet valve 210 to cool the room. The circulating water cooling the room is discharged through the discharge valve 220 to discharge heat to the first refrigerant in the first condenser 150 again (that is, in the third embodiment, the first valve 230 = off). , Inlet valve 210 and discharge valve 220 = on, heat source pump 250 = on, heat storage pump 410 = off, outdoor unit 100 = cooling operation, indoor unit 300 = off, fan coil unit ( 200) = on).

6 is a block diagram of a boiler and an air conditioner integrated heat pump system 10 which is operated to perform indoor cooling and heat storage functions according to a fourth embodiment of the present invention. In the fourth embodiment of the present invention is divided into the initial operation step and the operation step after the heat storage completion. In the initial operation stage, the outdoor unit 100 is not operated (that is, the first evaporator 110, the first compressor 140, the first condenser 150, etc. constituting the outdoor unit 100 are not operated). The fan coil unit 200 and the indoor unit 300 are operated.

Since the outdoor unit 100 is not operated, heat exchange between the first refrigerant and the circulating water in the first condenser 150 does not occur, and the circulating water is formed by the heat source pump 250 and the first condenser 150 and the second evaporator. It will be cycled between (310). Then, the circulating water is introduced into the fan coil unit 200 through the inlet valve 210 to absorb the heat of the indoor air. In addition, the circulating water is introduced into the first evaporator 110 of the indoor unit 300 through the discharge valve 220, and the second refrigerant in the second evaporator 310 absorbs heat from the circulating water. The circulation water is circulated between the first condenser 150 and the second evaporator 310 to supply heat absorbed by the fan coil unit 200 to the second refrigerant from the second evaporator 310 of the indoor unit 300.

The second refrigerant discharged from the second evaporator 310 of the indoor unit 300 becomes a base of high temperature and high pressure through the second compressor 320, and the heat of the second refrigerant is stored in the second condenser 330. To be heated. The storage water stored in the heat storage tank 400 is heated by the operation of the indoor unit 300. In addition, the storage water is circulated by the heat storage pump 410 between the second condenser 330 and the heat storage tank 400, and the user operates the load pump 420 to discharge the storage water stored in the heat storage tank 400. (I.e., in the initial operation stage of the fourth embodiment, the first valve 230 = off, the inlet valve 210 and the discharge valve 220 = on, the heat source pump 250 = on, and the heat storage pump 410). ) = off, outdoor unit 100 = cooling operation, indoor unit 300 = off, fan coil unit 200 = on.).

After the initial operation step, the operation step is performed after the heat storage is completed. The heat storage function is mainly performed in the initial operation stage, and the cooling function is performed in the operation stage after the heat storage is completed. In the operation step after the heat storage is completed, unlike the initial operation step, the operation of the indoor unit 300 is stopped, and the outdoor unit 100 performs the cooling operation. Since the outdoor unit 100 performs the cooling operation, the first refrigerant of the high pressure and high temperature, which has passed through the liquid separator 130 and the first compressor 140, is condensed in the first evaporator 110, and the first condenser 150 is formed by the first condenser 150. 1 The refrigerant absorbs the heat of the circulating water and evaporates. Therefore, the circulation water is cooled in the first condenser 150. In addition, since the heat source pump 250 is operated in the operation step after the heat storage is completed, the circulation water is circulated between the first condenser 150 and the second evaporator 310 of the indoor unit 300 (however, the second evaporator 310). Heat exchange between the circulating water and the second refrigerant is not generated), and the circulating water is cooled while releasing heat from the first condenser 150 to the first refrigerant.

Then, the cooled circulation water is introduced into the fan coil unit 200 through the inlet valve 210 to cool the room. The circulating water cooling the room is discharged through the discharge valve 220 to release heat to the first refrigerant in the first condenser 150 again (that is, in the operation step after completion of the heat storage, the first valve 230 = off, inlet valve 210 and discharge valve 220 = on, heat source pump 250 = on, heat storage pump 410 = off, outdoor unit 100 = cooling operation, indoor unit 300 = off, fan coil unit (200) = on).

FIG. 7 is a block diagram of a boiler and an air conditioner integrated heat pump system 10 operated to perform a floor heating function according to a fifth embodiment of the present invention. In the fifth embodiment of the present invention, when the hot water is stored in the heat storage tank 400 by performing the heat storage function by the initial operation step of the first embodiment or the fourth embodiment, the indoor unit 300 and the outdoor unit 100 during the day By operating only the load pump 420 in the non-operation state, the floor may be heated with storage water or hot water may be used.

10: Boiler and air conditioner integrated heat pump system
100: outdoor unit
110: first evaporator
120: Four-way valve
130: liquid separator
140: first compressor
150: first condenser
160: expansion valve
170: outdoor air filter
180: second valve
190: third valve
200: fan coil unit
210: inlet valve
220: discharge valve
230: first valve
240: refill tank
250: heat source pump
300: indoor
310: second evaporator
320: second compressor
330: second condenser
340: plate heat exchanger for enthalpy addition
350: indoor filter
400: heat storage tank
410: heat storage pump
420: load pump

Claims (11)

In a heat pump system,
A first compressor into which the first refrigerant is introduced to discharge the first refrigerant of high temperature and high pressure, a first condenser into which the first refrigerant discharged from the first compressor is introduced, and between the first condenser and the first compressor An outdoor unit including a four-way valve and a first evaporator into which the first refrigerant condensed in the first condenser flows, and an expansion valve provided between the first evaporator and the first condenser;
The second evaporator for introducing the second refrigerant to evaporate the second refrigerant and the second compressor for compressing the second refrigerant discharged from the second evaporator and the heat of the high temperature and high pressure second refrigerant discharged from the second compressor are separate. An indoor unit including a second condenser configured to be absorbed into the storage water introduced into the line of the storage unit and a heat storage tank in which the storage water discharged from the second condenser is stored; And
And a fan coil unit in which the circulating water is introduced into the first condenser, exchanges heat with the first refrigerant, and is discharged, and then the heat exchanged circulating water is introduced to cool / heat the room. A boiler and air conditioner-integrated heat pump system having a circulation line which is introduced into a second evaporator and heat-exchanged with the second refrigerant and flows back into the first condenser, thereby selectively performing heat storage, cooling, and heating.
The method of claim 1,
The boiler and the air conditioner integrated heat pump system further comprises a liquid separator provided between the inlet of the first compressor and the four-way valve.
The method of claim 2,
And a heat source pump for pumping the circulated water discharged from the second evaporator to the first condenser side.
The method of claim 3, wherein
A first valve disposed between the first condenser and the second evaporator to adjust a flow rate of the circulating water; And
And further comprising an inlet valve provided in the inlet of the fan coil unit and a discharge valve provided in the outlet of the fan coil unit to control the flow rate of the circulating water flowing into the fan coil unit and Air conditioner integrated heat pump system.
5. The method of claim 4,
A load pump for discharging the stored storage water of the heat storage tank to the outside; And
And a heat storage pump provided in the discharge portion of the heat storage tank to pump the storage water of the heat storage tank to the second condenser side.
6. The method of claim 5,
The first refrigerant passing through the heat storage tank and the heat exchanger and the part of the first refrigerant discharged from the first condenser further comprises a plate heat exchanger for enthalpy addition, the first pass through the plate heat exchanger for enthalpy addition The refrigerant is introduced into the first compressor, the second refrigerant passing through the plate heat exchanger for enthalpy addition flows into the second evaporator, characterized in that the boiler and air conditioner integrated heat pump system.
The method of claim 1,
The first refrigerant is R-410A, the second refrigerant is R-134a, characterized in that the boiler and air conditioner integrated heat pump system.
In the heat pump system operating method using the boiler and air conditioner integrated heat pump system of claim 6,
When the heat pump system is operated to perform a heat storage function, the first refrigerant introduced into the first evaporator is evaporated, flows into the first compressor through the four-way valve and the liquid separator, and is compressed and discharged from the first compressor. A first refrigerant is introduced into the first condenser to absorb the heat of the first refrigerant to circulate water;
The inlet valve and the discharge valve of the fan coil unit are closed, and the second refrigerant absorbs heat of the circulating water from the second evaporator by opening a first valve provided between the first condenser and the second evaporator of the indoor unit. step;
The second refrigerant is introduced into a second compressor of an indoor unit to discharge the second refrigerant of high temperature and high pressure;
Heating the storage water in which the second refrigerant flows into the second condenser of the indoor unit and is discharged from the heat storage tank; And
The second refrigerant passing through the second condenser is introduced into the plate heat exchanger for enthalpy addition, the heat exchange with the first refrigerant and then flows back to the second evaporator, characterized in that the boiler and air conditioner integrated heat pump How the system works.
In the heat pump system operating method using the boiler and air conditioner integrated heat pump system of claim 6,
When the heat pump system is operated to perform the indoor heating operation,
Without operating the second evaporator and the second compressor of the indoor unit, the first refrigerant introduced into the first evaporator of the outdoor unit is evaporated and introduced into the first compressor via the four-way valve and the liquid separator;
The first refrigerant discharged from the first compressor flows into a first condenser to absorb circulating water from the heat of the first refrigerant;
Circulating water heated in the first condenser is introduced through an inlet valve of a fan coil unit to discharge heat to a room and heat the room; And
And the circulating water is discharged through the discharge valve of the fan coil unit and circulated by flowing into the first condenser through the heat source pump.
In the heat pump system operating method using the boiler and air conditioner integrated heat pump system of claim 6,
When the heat pump system is operated to perform an indoor cooling operation,
Without operating the second evaporator and the second compressor of the indoor unit, the first refrigerant passed through the liquid separator of the outdoor unit flows into the first compressor and is discharged, and then flows into the first evaporator through the four-way valve to release heat and condense The first refrigerant flows into the first condenser, absorbs heat of the circulating water from the first condenser, and then cycles through the four-way valve to the first compressor again through the liquid separator to perform the cycle of the outdoor unit. A first evaporator to condense and the first condenser to evaporate;
Circulating water cooled by releasing heat from a first condenser and flowing through the inlet valve of the fan coil unit to absorb heat into the room to cool the room; And
And the circulating water is discharged through the discharge valve of the fan coil unit and circulated by flowing into the first condenser through the heat source pump.
In the heat pump system operating method using the boiler and air conditioner integrated heat pump system of claim 6,
When the heat pump system is operated to perform indoor cooling and hot water operation,
Without operating the first compressor, the first evaporator, and the first condenser of the outdoor unit, the second refrigerant is introduced into the second evaporator of the indoor unit to absorb heat of the circulating water, and the second compressor is introduced into the second compressor. The second refrigerant compressed by the heat passes through the second condenser to heat the stored water discharged from the heat storage tank, and then flows into the second evaporator to form a cycle, and the circulating water flows into the fan coil unit through the inlet valve and is indoors. Absorbing heat and flowing into the second evaporator through the discharge valve and circulating through the heat source valve;
Stopping the second evaporator and the second compressor of the indoor unit and stopping the heat storage pump when the temperature of the stored water stored in the heat storage tank becomes higher than a specific temperature;
After the first refrigerant flowing through the liquid separator of the outdoor unit flows into the first compressor and is discharged, the first refrigerant flows into the first evaporator through a four-way valve to release heat to the outside, and the first refrigerant condensed flows into the first condenser. The first condenser absorbs the heat of the circulating water and then cycles through the four-way valve again through the liquid separator to the first compressor. The first evaporator of the outdoor unit condenses, and the condenser evaporates. Doing;
Circulating water cooled by dissipating heat from a first condenser and flowing through the inlet valve of the fan coil unit to absorb heat to cool the room; And
And the circulating water is discharged through the discharge valve of the fan coil unit and circulated by flowing into the first condenser through the heat source valve.
KR1020110113332A 2011-11-02 2011-11-02 Integrated heat pump system with boiler and air conditioner and its operating methodology for heat pump system KR101320189B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109210822A (en) * 2018-10-25 2019-01-15 重庆重通智远空调设备有限公司 A kind of compound energy heat pump unit and system
CN111811040A (en) * 2020-08-14 2020-10-23 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN113154514A (en) * 2021-05-19 2021-07-23 大连理工大学 Machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003087681A1 (en) 2002-03-29 2003-10-23 Daikin Industries, Ltd. Heat source unit of air conditioner and air conditioner
KR100540362B1 (en) * 2003-01-14 2006-01-10 문영치 Heating, cooling and hot water supply system with heat pump
KR100946381B1 (en) 2008-10-29 2010-03-09 이형문 Hybrid heat pump type cooling and heating apparatus
KR101139341B1 (en) * 2009-06-02 2012-04-26 현우산기주식회사 Heat pump apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109210822A (en) * 2018-10-25 2019-01-15 重庆重通智远空调设备有限公司 A kind of compound energy heat pump unit and system
CN111811040A (en) * 2020-08-14 2020-10-23 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN113154514A (en) * 2021-05-19 2021-07-23 大连理工大学 Machine-pump combined-drive enthalpy-increasing type air source heat pump user three-purpose machine for cooling, heating and water heating

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