CN109269139B - Heat pump system and control method thereof - Google Patents

Heat pump system and control method thereof Download PDF

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Publication number
CN109269139B
CN109269139B CN201811115711.8A CN201811115711A CN109269139B CN 109269139 B CN109269139 B CN 109269139B CN 201811115711 A CN201811115711 A CN 201811115711A CN 109269139 B CN109269139 B CN 109269139B
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China
Prior art keywords
way valve
heating
water
communicated
hot water
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CN201811115711.8A
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CN109269139A (en
Inventor
余凯
史帆
赵建球
袁明征
白国建
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means

Abstract

The invention provides a heat pump system and a control method thereof, wherein the heat pump system comprises a hot water heat exchanger, a water tank and a domestic hot water outlet, the hot water heat exchanger is arranged in a refrigerant circulation pipeline in series, and a direct hot water pipeline is also arranged between the hot water outlet and the domestic hot water outlet. According to the heat pump system and the control method thereof, the direct-heating hot water pipeline is arranged, when a user needs a large amount of hot water, the hot water after heat exchange of the hot water heat exchanger can be directly supplied to the user by using the direct-heating hot water pipeline, so that the requirement of the user is met, the water consumption requirement of the user can be automatically judged by arranging the flow meter, the communication state of the first three-way valve and the second three-way valve is controlled, so that the water consumption requirement of the user is met, the hot water consumption requirement is preferably met by switching the heating three-way valves, and the switching among the refrigeration, heating water and heating water of the heat pump system is realized by using the three-.

Description

Heat pump system and control method thereof
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to a heat pump system and a control method thereof.
Background
Heat pump technology is increasingly being used for producing domestic hot water and for heating. The domestic hot water preparation generally adopts a one-to-one system scheme, namely, an outdoor unit is connected with a water tank, and the system comprises the following components: a compressor for driving the heat pump system and providing power for the refrigerant flow; an air side heat exchanger, also an evaporator, for absorbing heat from the environment; a condenser for releasing heat absorbed in the environment into the water tank to heat the water in the tank. The same heat pump principle is also applied to heating, but in the existing two-in-one system of domestic hot water and heating, the heat exchange path of the refrigerant cannot be reasonably distributed, and then the heating, hot water and refrigeration requirements of users cannot be guaranteed.
Disclosure of Invention
In order to solve the technical problem that the heat exchange path of the refrigerant cannot be reasonably distributed, the heat pump system and the control method thereof are provided, and the heat exchange path of the refrigerant can be adjusted according to the actual requirement of a user.
The utility model provides a heat pump system, includes off-premises station and indoor set, the off-premises station with the indoor set intercommunication forms refrigerant circulation pipeline, still includes hot water heat exchanger, water tank and life hot water export, hot water heat exchanger establish ties set up in the refrigerant circulation pipeline, just hot water heat exchanger is provided with cold water inlet and hot water outlet, cold water inlet with hot water outlet all with the water tank intercommunication, just hot water outlet with still be provided with directly hot water pipeline between the life hot water outlet.
The water tank is vertically arranged, the water tank is sequentially provided with a water inlet, a cold water outlet, a hot water inlet and a water outlet from bottom to top, the water inlet is communicated with an external water source, the cold water outlet is communicated with the cold water inlet, the hot water inlet is communicated with the hot water outlet, and the water outlet is communicated with the domestic hot water outlet.
The heat pump system further comprises a first three-way valve, an inlet of the first three-way valve is communicated with the hot water outlet, a first outlet of the first three-way valve is communicated with the hot water inlet, and a second outlet of the first three-way valve is communicated with the domestic hot water outlet.
The heat pump system further comprises a second three-way valve, a first inlet of the second three-way valve is communicated with a second outlet of the first three-way valve, a second inlet of the second three-way valve is communicated with the water outlet, and an outlet of the second three-way valve is communicated with the domestic hot water outlet.
And a flow meter is arranged at the water inlet and controls the communication state of the first three-way valve and the second three-way valve.
The heat pump system includes a first water pump disposed between the cold water outlet and the cold water inlet.
The heat pump system further comprises a heating heat exchanger and a heating heat exchange pipeline, the heating heat exchanger is arranged in the refrigerant circulation pipeline in series, and the heating heat exchange pipeline exchanges heat with the refrigerant circulation pipeline in the heating heat exchanger.
The heat pump system further comprises a floor heating pipeline, and the floor heating pipeline is communicated with the heating heat exchanger to form the heating heat exchange pipeline.
The number of the floor heating pipelines is multiple, and all the floor heating pipelines are sequentially connected in series.
The heat pump system still includes the heating three-way valve, the entry and the first export of heating three-way valve all with the heating heat exchanger intercommunication forms the short circuit branch road, the second export of heating three-way valve with warm up the pipeline intercommunication, just the second export of heating three-way valve with during the entry intercommunication of heating three-way valve, warm up the pipeline and heat, the first export of heating three-way valve with during the entry intercommunication of heating three-way valve, warm up the pipeline and circulate and keep warm.
The heat pump system further comprises a second water pump, and the second water pump is arranged in the heating heat exchange pipeline.
The indoor units are arranged in a plurality of numbers, and all the indoor units are arranged on the outdoor unit in parallel.
The indoor unit comprises an indoor heat exchanger and an indoor throttling device, and the indoor throttling device is communicated with the outdoor unit through the indoor heat exchanger.
The outdoor unit comprises a compressor, a four-way valve, an evaporator, a throttling device, a first electromagnetic valve and a second electromagnetic valve, wherein the D end of the four-way valve is communicated with an exhaust port of the compressor, the S end of the four-way valve is communicated with an air suction port of the compressor, the evaporator, the throttling device, the first electromagnetic valve and the hot water heat exchanger are sequentially connected in series between the E end and the C end of the four-way valve, one end of the indoor unit is communicated with the middle position of the first electromagnetic valve and the evaporator through the second electromagnetic valve, and the other end of the indoor unit is communicated with an inlet of the compressor.
A control method of the heat pump system includes:
the single hot water making mode comprises: and the D end of the four-way valve is communicated with the C end, the first electromagnetic valve and the first water pump are opened, and the second electromagnetic valve and the second water pump are closed.
Further comprising in the hot water mode:
detecting a water consumption demand h0, and setting a preset water demand value h 1;
if h0 is equal to 0, the inlet of the first three-way valve communicates with the first outlet of the first three-way valve;
if the value of 0 < h0 is not less than h1, the inlet of the first three-way valve is communicated with the first outlet of the first three-way valve, and the second inlet of the second three-way valve is communicated with the outlet of the second three-way valve;
if h0 > h1, the inlet of the first three-way valve communicates with the second outlet of the first three-way valve and the first inlet of the second three-way valve communicates with the outlet of the second three-way valve.
The control method further comprises the following steps:
heating water and heating mode: and the D end of the four-way valve is communicated with the C end, the first electromagnetic valve, the first water pump and the second water pump are opened, the second electromagnetic valve is closed, and the inlet of the heating three-way valve is communicated with the second outlet of the heating three-way valve.
The heating water and heating mode also comprises:
detecting the water consumption requirement h 0;
if h0 increases, the inlet of the heating three-way valve communicates with the first outlet of the heating three-way valve.
The control method further comprises the following steps:
indoor set refrigeration mode: and the D end and the E end of the four-way valve are communicated, the second electromagnetic valve is opened, and the first electromagnetic valve, the first water pump and the second water pump are closed.
According to the heat pump system and the control method thereof, the direct-heating hot water pipeline is arranged, when a user needs a large amount of hot water, the hot water after heat exchange of the hot water heat exchanger can be directly supplied to the user by using the direct-heating hot water pipeline, so that the requirement of the user is met, the requirement of the user on the water consumption can be automatically judged by arranging the flowmeter, the communication state of the first three-way valve and the second three-way valve is controlled, so that the requirement of the user on the water consumption is met, the requirement of the water consumption is preferably met by switching of the heating three-way valves, meanwhile, the floor heating pipeline is circulated in a circulating mode, the comfort of the user is guaranteed to the maximum extent, and the switching among the refrigeration, the heating water and.
Drawings
Fig. 1 is a schematic structural diagram of a heat pump system according to an embodiment of the heat pump system and a control method thereof provided by the present invention;
fig. 2 is a schematic structural diagram of a hot water heat exchanger, a water tank and a domestic hot water outlet of an embodiment of a heat pump system and a control method thereof provided by the invention;
in the figure:
1. a hot water heat exchanger; 2. a water tank; 3. a domestic hot water outlet; 4. a first three-way valve; 5. a second three-way valve; 6. a flow meter; 7. a first water pump; 8. a heating heat exchanger; 9. a heating heat exchange pipeline; 10. a heating three-way valve; 11. a second water pump; 12. an indoor heat exchanger; 13. an indoor throttling device; 14. a compressor; 15. a four-way valve; 16. an evaporator; 17. a throttling device; 18. a first solenoid valve; 19. a second solenoid valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The heat pump system shown in fig. 1 and 2 comprises an outdoor unit and an indoor unit, wherein the outdoor unit is communicated with the indoor unit to form a refrigerant circulation pipeline, the heat pump system further comprises a hot water heat exchanger 1, a water tank 2 and a domestic hot water outlet 3, the hot water heat exchanger 1 is arranged in the refrigerant circulation pipeline in series, the hot water heat exchanger 1 is provided with a cold water inlet and a hot water outlet which are both communicated with the water tank 2, and a direct hot water pipeline is also arranged between the hot water outlet and the domestic hot water outlet 3, according to the hot water demand of the user, the port communicated with the domestic hot water outlet 3 is switched, when the hot water demand is low, the water tank 2 is used for supplying hot water, when the demand of the hot water is high, the hot water heat exchanger 1 is directly used for supplying the hot water, therefore, the requirement of a user is met to the maximum extent, and the high and low demand of hot water is set according to the actual requirement.
The water tank 2 is vertically arranged, the water tank 2 is sequentially provided with a water inlet, a cold water outlet, a hot water inlet and a water outlet from bottom to top, the water inlet is communicated with an external water source, the cold water outlet is communicated with the cold water inlet, the hot water inlet is communicated with the hot water outlet, and the water outlet is communicated with the domestic hot water outlet 3.
The heat pump system further comprises a first three-way valve 4, an inlet of the first three-way valve 4 is communicated with the hot water outlet, a first outlet of the first three-way valve 4 is communicated with the hot water inlet, a second outlet of the first three-way valve 4 is communicated with the domestic hot water outlet 3, when the inlet of the first three-way valve 4 is communicated with the first outlet of the first three-way valve 4, the hot water heat exchanger 1 heats water in the water tank 2, and when the inlet of the first three-way valve 4 is communicated with the second outlet of the first three-way valve 4, the hot water heat exchanger 1 directly supplies hot water to the domestic hot water outlet 3.
The heat pump system further comprises a second three-way valve 5, a first inlet of the second three-way valve 5 is communicated with a second outlet of the first three-way valve 4, a second inlet of the second three-way valve 5 is communicated with the water outlet, an outlet of the second three-way valve 5 is communicated with the domestic hot water outlet 3, when the first inlet of the second three-way valve 5 is communicated with the outlet of the second three-way valve 5, hot water is directly supplied to the domestic hot water outlet 3 through the hot water heat exchanger 1, and when the second inlet of the second three-way valve 5 is communicated with the outlet of the second three-way valve 5, hot water is supplied to the domestic hot water outlet 3 through the water tank 2.
The water inlet is provided with a flow meter 6, the flow meter 6 controls the communication state of the first three-way valve 4 and the second three-way valve 5, the flow meter 6 can detect the water inlet amount of the water tank 2 in real time, when the water inlet amount of the water tank 2 is increased, the water demand of a user is increased, and similarly, when the water inlet amount of the water tank 2 is unchanged, the water demand of the user is constant, and when the water inlet amount of the water tank 2 is decreased, the water demand of the user is decreased, therefore, the flow meter 6 can obtain the water demand of the user, and the communication state of the first three-way valve 4 and the second three-way valve 5 is controlled through the water demand, so that the requirements of the user are met to the maximum extent.
The heat pump system comprises a first water pump 7, the first water pump 7 is arranged between the cold water outlet and the cold water inlet, and the first water pump 7 is used for pumping water in the water tank 2 to the hot water heat exchanger 1 for heat exchange.
The heat pump system further comprises a heating heat exchanger 8 and a heating heat exchange pipeline 9, the heating heat exchanger 8 is arranged in the refrigerant circulation pipeline in series, and the heating heat exchange pipeline 9 exchanges heat with the refrigerant circulation pipeline in the heating heat exchanger 8.
The heat pump system further comprises a floor heating pipeline, and the floor heating pipeline is communicated with the heating heat exchanger 8 to form the heating heat exchange pipeline 9.
The number of the floor heating pipelines is multiple, and all the floor heating pipelines are sequentially connected in series.
The heat pump system further comprises a heating three-way valve 10, an inlet and a first outlet of the heating three-way valve 10 are communicated with the heating heat exchanger 8 to form a short-circuit branch, a second outlet of the heating three-way valve 10 is communicated with the floor heating pipeline, the floor heating pipeline heats when the second outlet of the heating three-way valve 10 is communicated with the inlet of the heating three-way valve 10, the floor heating pipeline circularly preserves heat when the first outlet of the heating three-way valve 10 is communicated with the inlet of the heating three-way valve 10, when the hot water demand of a user is increased or too large, the inlet of the heating three-way valve 10 is communicated with the first outlet of the heating three-way valve 10, the short-circuit branch is opened, all floor heating pipelines are in short circuit connection, so that the heat exchange demand of the hot water heat exchanger 1 is preferentially supplied, and when the hot water demand of the user is reduced, the short-circuit branch is, and recovering the heating of the ground heating pipeline.
The heat pump system further comprises a second water pump 11, the second water pump 11 is arranged in the heating heat exchange pipeline 9, and a heat exchange medium is driven to flow in the heating heat exchange pipeline 9 by the second water pump 11.
The indoor units are arranged in a plurality of numbers, and all the indoor units are arranged on the outdoor unit in parallel.
The indoor unit comprises an indoor heat exchanger 12 and an indoor throttling device 13, the indoor throttling device 13 is communicated with the outdoor unit through the indoor heat exchanger 12, and when the refrigerant flows into the indoor unit, the refrigerant flows into the indoor heat exchanger 12 for refrigeration after passing through the throttling effect of the indoor throttling device 13.
The outdoor unit comprises a compressor 14, a four-way valve 15, an evaporator 16, a throttling device 17, a first electromagnetic valve 18 and a second electromagnetic valve 19, wherein the D end of the four-way valve 15 is communicated with an exhaust port of the compressor 14, the S end of the four-way valve 15 is communicated with a suction port of the compressor 14, the evaporator 16, the throttling device 17, the first electromagnetic valve 18 and the hot water heat exchanger 1 are sequentially connected in series between the E end and the C end of the four-way valve 15, one end of the indoor unit is communicated with the middle position of the first electromagnetic valve 18 and the evaporator 16 through the second electromagnetic valve 19, the other end of the indoor unit is communicated with an inlet of the compressor 14, when the first electromagnetic valve 18 is opened and the second electromagnetic valve 19 is closed, a heat pump system heats a refrigerant without passing through the indoor unit, when the first electromagnetic valve 18 is closed and the second electromagnetic valve 19 is opened, the heat pump system performs refrigeration, and the refrigerant does not pass through the hot water heat exchanger 1 and/or the heating heat exchanger 8.
Preferably, the hot water heat exchanger 1 and/or the heating heat exchanger 8 are heat exchange sleeves.
A control method of the heat pump system includes:
the single hot water making mode comprises: the D end of the four-way valve 15 is communicated with the C end, the first electromagnetic valve 18 and the first water pump 7 are opened, the second electromagnetic valve 19 and the second water pump 11 are closed, and a refrigerant flows through the compressor 14, the hot water heat exchanger 1, the throttling device 17, the first electromagnetic valve 18 and the evaporator 16 in sequence and then flows back to the compressor 14.
Further comprising in the hot water mode:
detecting a water consumption demand h0, and setting a preset water demand value h 1;
if h0 is equal to 0, the inlet of the first three-way valve 4 is communicated with the first outlet of the first three-way valve 4, and the water temperature in the water tank 2 is kept at the set temperature by utilizing the heat exchange amount of the hot water heat exchanger 1;
if h0 is more than 0 and less than or equal to h1, the inlet of the first three-way valve 4 is communicated with the first outlet of the first three-way valve 4, the second inlet of the second three-way valve 5 is communicated with the outlet of the second three-way valve 5, water is supplied by the water tank 2, water entering the bottom of the water tank 2 is sent into the hot water heat exchanger 1 for heat exchange, and the water temperature supplied by the water tank 2 is ensured to meet the requirement;
if h0 > h1, the inlet of the first three-way valve 4 communicates with the second outlet of the first three-way valve 4, the first inlet of the second three-way valve 5 communicates with the outlet of the second three-way valve 5, and hot water is directly supplied by the hot water heat exchanger 1.
The control method further comprises the following steps:
heating water and heating mode: the D end of the four-way valve 15 is communicated with the C end, the first electromagnetic valve 18, the first water pump 7 and the second water pump 11 are opened, the second electromagnetic valve 19 is closed, the inlet of the heating three-way valve 10 is communicated with the second outlet of the heating three-way valve 10, and the refrigerant flows back to the compressor 14 after sequentially passing through the compressor 14, the heating heat exchanger 8, the throttling device 17, the first electromagnetic valve 18 and the evaporator 16.
The heating water and heating mode also comprises:
detecting the water consumption requirement h 0;
if h0 is increased, the inlet of the heating three-way valve 10 is communicated with the first outlet of the heating three-way valve 10, that is, when the hot water demand of the user is increased, all the heating heat exchange pipelines 9 are short-circuited, and the hot water demand of the user is preferentially met.
The control method further comprises the following steps:
indoor set refrigeration mode: the end D of the four-way valve 15 is communicated with the end E, the second electromagnetic valve 19 is opened, the first electromagnetic valve 18, the first water pump 7 and the second water pump 11 are closed, and a refrigerant flows through the compressor 14, the evaporator 16, the second electromagnetic valve 19 and the indoor heat exchanger 12 of the indoor throttling device 13 in sequence and then flows back to the compressor 14.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (14)

1. A heat pump system comprises an outdoor unit and an indoor unit, wherein the outdoor unit is communicated with the indoor unit to form a refrigerant circulation pipeline, and the heat pump system is characterized in that: the heat pump system also comprises a hot water heat exchanger (1), a water tank (2) and a domestic hot water outlet (3), wherein the hot water heat exchanger (1) is arranged in the refrigerant circulation pipeline in series, the hot water heat exchanger (1) is provided with a cold water inlet and a hot water outlet, the cold water inlet and the hot water outlet are both communicated with the water tank (2), a direct hot water pipeline is also arranged between the hot water outlet and the domestic hot water outlet (3), the heat pump system also comprises a first three-way valve (4), an inlet of the first three-way valve (4) is communicated with the hot water outlet, the water tank (2) is vertically arranged, the water tank (2) is sequentially provided with a water inlet, a cold water outlet, a hot water inlet and a water outlet from bottom to top, the water inlet is communicated with an external water source, the cold water outlet is communicated with the cold water inlet, and the hot water inlet is communicated with, the water outlet is communicated with the domestic hot water outlet (3), the first outlet of the first three-way valve (4) is communicated with the hot water inlet, the second outlet of the first three-way valve (4) is communicated with the domestic hot water outlet (3), the heat pump system further comprises a second three-way valve (5), the first inlet of the second three-way valve (5) is communicated with the second outlet of the first three-way valve (4), the second inlet of the second three-way valve (5) is communicated with the water outlet, the outlet of the second three-way valve (5) is communicated with the domestic hot water outlet (3), a flow meter (6) is arranged at the water inlet, the flow meter (6) controls the communication state of the first three-way valve (4) and the second three-way valve (5), the heat pump system further comprises a heating heat exchanger (8) and a heating heat exchange pipeline (9), the heating heat exchanger (8) is arranged in the refrigerant circulating pipeline in series, and the heating heat exchange pipeline (9) exchanges heat with the refrigerant circulating pipeline in the heating heat exchanger (8).
2. The heat pump system of claim 1, wherein: the heat pump system comprises a first water pump (7), the first water pump (7) being arranged between the cold water outlet and the cold water inlet.
3. The heat pump system of claim 2, wherein: the heat pump system further comprises a floor heating pipeline, and the floor heating pipeline is communicated with the heating heat exchanger (8) to form the heating heat exchange pipeline (9).
4. The heat pump system of claim 3, wherein: the number of the floor heating pipelines is multiple, and all the floor heating pipelines are sequentially connected in series.
5. The heat pump system of claim 3, wherein: the heat pump system still includes heating three-way valve (10), the entry and the first export of heating three-way valve (10) all with heating heat exchanger (8) intercommunication forms the short circuit branch road, the second export of heating three-way valve (10) with warm up the pipeline intercommunication, and the second export of heating three-way valve (10) with during the entry intercommunication of heating three-way valve (10), warm up the pipeline and heat, the first export of heating three-way valve (10) with during the entry intercommunication of heating three-way valve (10), warm up the pipeline and circulate and keep warm.
6. The heat pump system of claim 5, wherein: the heat pump system further comprises a second water pump (11), and the second water pump (11) is arranged in the heating heat exchange pipeline (9).
7. The heat pump system of claim 6, wherein: the indoor units are arranged in a plurality of numbers, and all the indoor units are arranged on the outdoor unit in parallel.
8. The heat pump system of claim 7, wherein: the indoor unit comprises an indoor heat exchanger (12) and an indoor throttling device (13), and the indoor throttling device (13) is communicated with the outdoor unit through the indoor heat exchanger (12).
9. The heat pump system of claim 7, wherein: the outdoor unit comprises a compressor (14), a four-way valve (15), an evaporator (16), a throttling device (17), a first electromagnetic valve (18) and a second electromagnetic valve (19), wherein the D end of the four-way valve (15) is communicated with an exhaust port of the compressor (14), the S end of the four-way valve (15) is communicated with an air suction port of the compressor (14), the evaporator (16), the throttling device (17), the first electromagnetic valve (18) and the hot water heat exchanger (1) are sequentially connected in series between the E end and the C end of the four-way valve (15), one end of the indoor unit is communicated with the middle positions of the first electromagnetic valve (18) and the evaporator (16) through the second electromagnetic valve (19), and the other end of the indoor unit is communicated with an inlet of the compressor (14).
10. A control method of the heat pump system according to claim 9, characterized in that: the method comprises the following steps:
the single hot water making mode comprises: and the D end and the C end of the four-way valve (15) are communicated, the first electromagnetic valve (18) and the first water pump (7) are opened, and the second electromagnetic valve (19) and the second water pump (11) are closed.
11. The control method according to claim 10, characterized in that: further comprising in the hot water mode:
detecting a water consumption demand h0, and setting a preset water demand value h 1;
if h0 is equal to 0, the inlet of the first three-way valve (4) is communicated with the first outlet of the first three-way valve (4);
if 0 < h0 ≤ h1, the inlet of the first three-way valve (4) is communicated with the first outlet of the first three-way valve (4), and the second inlet of the second three-way valve (5) is communicated with the outlet of the second three-way valve (5);
if h0 > h1, the inlet of the first three-way valve (4) communicates with the second outlet of the first three-way valve (4) and the first inlet of the second three-way valve (5) communicates with the outlet of the second three-way valve (5).
12. The control method according to claim 10, characterized in that: further comprising:
heating water and heating mode: the D end of the four-way valve (15) is communicated with the C end, the first electromagnetic valve (18), the first water pump (7) and the second water pump (11) are opened, the second electromagnetic valve (19) is closed, and the inlet of the heating three-way valve (10) is communicated with the second outlet of the heating three-way valve (10).
13. The control method according to claim 12, characterized in that: the heating water and heating mode also comprises:
detecting the water consumption requirement h 0;
if h0 is increased, the inlet of the heating three-way valve (10) communicates with the first outlet of the heating three-way valve (10).
14. The control method according to claim 10, characterized in that: further comprising:
indoor set refrigeration mode: and the D end and the E end of the four-way valve (15) are communicated, the second electromagnetic valve (19) is opened, and the first electromagnetic valve (18), the first water pump (7) and the second water pump (11) are closed.
CN201811115711.8A 2018-09-25 2018-09-25 Heat pump system and control method thereof Active CN109269139B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811115711.8A CN109269139B (en) 2018-09-25 2018-09-25 Heat pump system and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811115711.8A CN109269139B (en) 2018-09-25 2018-09-25 Heat pump system and control method thereof

Publications (2)

Publication Number Publication Date
CN109269139A CN109269139A (en) 2019-01-25
CN109269139B true CN109269139B (en) 2020-09-04

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202040977U (en) * 2011-04-26 2011-11-16 珠海格力电器股份有限公司 Water storage type heat pump water heater
JP2014202378A (en) * 2013-04-01 2014-10-27 リンナイ株式会社 Hot water storage water heater
CN106152507A (en) * 2016-07-21 2016-11-23 天津商业大学 A kind of Teat pump boiler blood circulation
CN206959334U (en) * 2017-07-20 2018-02-02 广州德能热源设备有限公司 Directly-heated type Hot water units
CN108019808A (en) * 2017-12-04 2018-05-11 珠海格力电器股份有限公司 Heat pump system and its control method
CN208983657U (en) * 2018-09-25 2019-06-14 珠海格力电器股份有限公司 Heat pump system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202040977U (en) * 2011-04-26 2011-11-16 珠海格力电器股份有限公司 Water storage type heat pump water heater
JP2014202378A (en) * 2013-04-01 2014-10-27 リンナイ株式会社 Hot water storage water heater
CN106152507A (en) * 2016-07-21 2016-11-23 天津商业大学 A kind of Teat pump boiler blood circulation
CN206959334U (en) * 2017-07-20 2018-02-02 广州德能热源设备有限公司 Directly-heated type Hot water units
CN108019808A (en) * 2017-12-04 2018-05-11 珠海格力电器股份有限公司 Heat pump system and its control method
CN208983657U (en) * 2018-09-25 2019-06-14 珠海格力电器股份有限公司 Heat pump system

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