CN109269139A - heat pump system and control method thereof - Google Patents
heat pump system and control method thereof Download PDFInfo
- Publication number
- CN109269139A CN109269139A CN201811115711.8A CN201811115711A CN109269139A CN 109269139 A CN109269139 A CN 109269139A CN 201811115711 A CN201811115711 A CN 201811115711A CN 109269139 A CN109269139 A CN 109269139A
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- water
- heating
- outlet
- pump system
- hot water
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- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 245
- 238000010438 heat treatment Methods 0.000 claims abstract description 121
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 6
- 210000004899 c-terminal region Anatomy 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000008236 heating water Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
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
Technical field
The present invention relates to technical field of heat exchange equipment, especially a kind of heat pump system and its control method.
Background technique
Current heat pump techniques are increasingly used for producing domestic hot-water and in heating.It is general to produce domestic hot-water
Using the system schema of one-to-one, i.e. an outdoor unit connects a water tank, the composition of the set system are as follows: a compressor is made
For heat pump system driving and for refrigerant flowing power is provided；One air-side heat exchanger, and be evaporator, for absorbing environment
In heat；One condenser, the water heating for the heat being absorbed into the environment to be discharged into water tank, in feed-tank.
Same heat pump principle is also applied in heating, but existing by domestic hot-water and heating two-in-one system, can not be reasonable
Refrigerant heat exchange approach is distributed, and then not can guarantee heating, hot water and the refrigeration demand of user.
Summary of the invention
In order to solve can not reasonable distribution refrigerant heat exchange approach the technical issues of, and provide one kind can according to user reality
Demand adjusts the heat pump system and its control method of refrigerant heat exchange approach.
A kind of heat pump system, including outdoor unit and indoor unit, the outdoor unit is connected to the indoor unit to be formed refrigerant and follows
Endless tube road further includes hot water heat exchanger, water tank and domestic hot-water outlet, and the hot water heat exchanger is arranged in series to follow in the refrigerant
In endless tube road, and the hot water heat exchanger is provided with cold water inlet and hot water outlet, the cold water inlet and the hot water outlet
It is connected to the water tank, and is additionally provided with directly-heated hot water line between the hot water outlet and domestic hot-water outlet.
The water tank is vertically arranged, and the water tank is disposed with water inlet, cooling water outlet, hot water inlet from the bottom to top
And water outlet, the water inlet are connected to external water source, the cooling water outlet is connected to the cold water inlet, the hot water inlet
It is connected to the hot water outlet, the water outlet and domestic hot-water's outlet.
The heat pump system further includes the first triple valve, and the entrance of first triple valve is connected to the hot water outlet,
The first outlet of first triple valve is connected to the hot water inlet, the second outlet and the life of first triple valve
Hot water outlet connection.
The heat pump system further includes the second triple valve, the first entrance of second triple valve and first triple valve
Second outlet connection, the second entrance of second triple valve is connected to the water outlet, and second triple valve out
Mouth and domestic hot-water's outlet.
The water inlet is provided with flowmeter, and the flowmeter controls first triple valve and second triple valve
Connected state.
The heat pump system includes the first water pump, and first water pump is set to the cooling water outlet and the cold water inlet
Between.
The heat pump system further includes heating heat exchanger and heating heat-exchange pipeline, and the heating heat exchanger is arranged in series in institute
It states in medium circulation pipeline, and the heating heat-exchange pipeline exchanges heat in the heating heat exchanger with medium circulation pipeline.
The heat pump system further includes ground heating pipe, and the ground heating pipe is connected to form described adopt with the heating heat exchanger
Warm heat exchanging pipe.
The quantity of the ground heating pipe is multiple, and all ground heating pipes are sequentially connected in series setting.
The heat pump system further includes heating three-way valve, and the entrance and first outlet of the heating three-way valve are adopted with described
Warm heat exchanger is connected to form short circuit branch, and the second outlet of the heating three-way valve is connected to the ground heating pipe, and described
When the second outlet of heating three-way valve is connected to the entrance of the heating three-way valve, the ground heating pipe is heated, described
When the first outlet of heating three-way valve is connected to the entrance of the heating three-way valve, the ground heating pipe carries out circulation heat preservation.
The heat pump system further includes the second water pump, and second water pump is set in the heating heat-exchange pipeline.
The quantity of the indoor unit is multiple, and all indoor units are arranged in parallel on the outdoor unit.
The indoor unit includes indoor heat exchanger and indoor throttling set, and the indoor throttling set passes through the interior
Heat exchanger is connected to the outdoor unit.
The outdoor unit includes compressor, four-way valve, evaporator, throttling set, the first solenoid valve and second solenoid valve, institute
The end D for stating four-way valve is connected to the exhaust outlet of the compressor, and the end S of the four-way valve and the air entry of the compressor connect
It is logical, the setting described four that the evaporator, the throttling set, first solenoid valve and the hot water heat exchanger are sequentially connected in series
Between the end E of port valve and C-terminal, one end of the indoor unit passes through the second solenoid valve and first solenoid valve and the steaming
The middle position connection of device is sent out, the other end is connected to the entrance of the compressor.
A kind of control method of above-mentioned heat pump system, comprising:
Independent hot water model: the end D of the four-way valve is connected to C-terminal, and first solenoid valve and the first water pump are opened,
The second solenoid valve and second water pump are closed.
In the hot water model further include:
Urban water demand h0 is detected, and sets said preset amount of water requirements h1；
If h0=0, the entrance of first triple valve is connected to the first outlet of first triple valve；
If 0 < h0≤h1, the entrance of first triple valve is connected to the first outlet of first triple valve, described
The outlet of the second entrance of second triple valve and second triple valve；
If h0 > h1, the entrance of first triple valve are connected to the second outlet of first triple valve, described
The outlet of the first entrance of two triple valves and second triple valve.
The control method further include:
Water heating and heating heating mode: the end D of the four-way valve is connected to C-terminal, first solenoid valve, described first
Water pump and second water pump are opened, and the second solenoid valve is closed, the entrance of the heating three-way valve and the heating threeway
The second outlet of valve is connected to.
In water heating and heating heating mode further include:
Detect urban water demand h0；
If h0 increases, the entrance of the heating three-way valve is connected to the first outlet of the heating three-way valve.
The control method further include:
Indoor unit refrigeration mode: the end D of the four-way valve is connected to the end E, and the second solenoid valve is opened, first electricity
Magnet valve, first water pump and second water pump are closed.
Heat pump system provided by the invention and its control method, by the way that directly-heated hot water line is arranged, in user's wilderness demand
When hot water, it can be directly fed using the hot water after directly-heated hot water line exchanges heat hot water heat exchanger to user, to meet use
The demand at family can judge automatically the urban water demand of user, control the first triple valve and the second threeway by the way that flowmeter is arranged
The connected state of valve to meet the water demand of user, and using the switching of heating three-way valve, preferably satisfies amount of hot water
Demand makes ground heating pipe inner recirculation flow logical at the same time, guarantees the comfort of user to greatest extent, pass through three triple valves and two
A solenoid valve realizes the switching between refrigeration, water heating and the heating of heat pump system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the heat pump system of the embodiment of heat pump system provided by the invention and its control method；
Fig. 2 is hot water heat exchanger, water tank and the life of the embodiment of heat pump system provided by the invention and its control method
The structural schematic diagram of hot water exit；
In figure:
1, hot water heat exchanger；2, water tank；3, domestic hot-water exports；4, the first triple valve；5, the second triple valve；6, flow
Meter；7, the first water pump；8, heating heat exchanger；9, heating heat-exchange pipeline；10, heating three-way valve；11, the second water pump；12, interior is changed
Hot device；13, indoor throttling set；14, compressor；15, four-way valve；16, evaporator；17, throttling set；18, the first solenoid valve；
19, second solenoid valve.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
The present invention is further elaborated.It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, not
For limiting the present invention.
Heat pump system as depicted in figs. 1 and 2, including outdoor unit and indoor unit, the outdoor unit and the indoor unit connect
It is logical to form medium circulation pipeline, it further include hot water heat exchanger 1, water tank 2 and domestic hot-water outlet 3, the hot water heat exchanger 1 is connected
It is set in the medium circulation pipeline, and the hot water heat exchanger 1 is provided with cold water inlet and hot water outlet, the cold water enters
Mouth and the hot water outlet are connected to the water tank 2, and are also set up between the hot water outlet and domestic hot-water outlet 3
There is directly-heated hot water line, measured according to the hot water demand of user, switches the port being connected to domestic hot-water outlet 3, work as hot water demand
When measuring low, hot water supply is carried out using water tank 2, when hot water demand's amount is high, is directly supplied using hot water heat exchanger 1, from
And it meets the needs of users to greatest extent, wherein high and low the setting according to actual needs of hot water demand's amount.
The water tank 2 is vertically arranged, and the water tank 2 is disposed with water inlet, cooling water outlet, hot water from the bottom to top and enters
Mouth and water outlet, the water inlet are connected to external water source, and the cooling water outlet is connected to the cold water inlet, and the hot water enters
Mouth is connected to the hot water outlet, and the water outlet is connected to domestic hot-water outlet 3.
The heat pump system further includes the first triple valve 4, and the entrance and the hot water outlet of first triple valve 4 connect
Logical, the first outlet of first triple valve 4 is connected to the hot water inlet, the second outlet of first triple valve 4 and institute
3 connection of domestic hot-water outlet is stated, when the entrance of first triple valve 4 is connected to the first outlet of first triple valve 4,
Hot water heat exchanger 1 heats the water in water tank 2, when first triple valve 4 entrance and first triple valve 4 the
When two outlets, hot water heat exchanger 1 is directly to 3 supply hot water of domestic hot-water outlet.
The heat pump system further includes the second triple valve 5, the first entrance of second triple valve 5 and first threeway
The second outlet of valve 4 is connected to, and the second entrance of second triple valve 5 is connected to the water outlet, and second triple valve 5
Outlet and the domestic hot-water outlet 3 be connected to, first entrance and second triple valve 5 when second triple valve 5
When outlet, directly from hot water heat exchanger 1 to domestic hot-water outlet 3 supply hot water, when the second triple valve 5 second entrance with
It is that life hot water outlet 3 supplies hot water by water tank 2 when the outlet of second triple valve 5.
The water inlet is provided with flowmeter 6, and the flowmeter 6 controls first triple valve 4 and the described 2nd 3
The connected state of port valve 5, flowmeter 6 are capable of the amount of inlet water of real-time detection water tank 2, when the amount of inlet water of water tank 2 increases, then
Indicate that the water demand amount of user increases, in the same way when the inflow of water tank 2 is constant, then it represents that the water demand amount of user
It is constant, when the inflow of water tank 2 reduces, then it represents that the water demand amount of user reduces, and therefore, flowmeter 6 can obtain use
The water demand amount at family, and by the connected state of water demand amount control the first triple valve 4 and the second triple valve 5, thus most
Limits are met the needs of users.
The heat pump system includes the first water pump 7, and first water pump 7 is set to the cooling water outlet and the cold water enters
Between mouthful, the water in water tank 2 is pumped in hot water heat exchanger 1 using the first water pump 7 and is exchanged heat.
The heat pump system further includes heating heat exchanger 8 and heating heat-exchange pipeline 9, and the heating heat exchanger 8 is arranged in series
In the medium circulation pipeline, and the heating heat-exchange pipeline 9 carries out in the heating heat exchanger 8 with medium circulation pipeline
Heat exchange.
The heat pump system further includes ground heating pipe, and the ground heating pipe is connected to described in formation with the heating heat exchanger 8
Heating heat-exchange pipeline 9.
The quantity of the ground heating pipe is multiple, and all ground heating pipes are sequentially connected in series setting.
The heat pump system further includes heating three-way valve 10, and the entrance and first outlet of the heating three-way valve 10 are and institute
It states the connection of heating heat exchanger 8 and forms short circuit branch, the second outlet of the heating three-way valve 10 is connected to the ground heating pipe, and
When the second outlet of the heating three-way valve 10 is connected to the entrance of the heating three-way valve 10, the ground heating pipe system
Heat, when the first outlet of the heating three-way valve 10 is connected to the entrance of the heating three-way valve 10, the ground heating pipe into
Row circulation heat preservation, when the hot water demand of user, which measures, to be increased or is excessive, by the entrance of the heating three-way valve 10 and the heating
The first outlet of triple valve 10 is connected to, and is opened and is shorted branch, and then all ground heating pipes are shorted, so that preferentially supply hot water changes
The heat exchange demand of hot device 1 is then gradually opened when the hot water demand of user, which measures, to be reduced and is shorted branch, restore adopting for ground heating pipe
It is warm.
The heat pump system further includes the second water pump 11, and second water pump 11 is set in the heating heat-exchange pipeline 9,
It is flowed in the heating heat-exchange pipeline 9 using the second water pump 11 driving heat transferring medium.
The quantity of the indoor unit is multiple, and all indoor units are arranged in parallel on the outdoor unit.
The indoor unit includes indoor heat exchanger 12 and indoor throttling set 13, and the indoor throttling set 13 passes through institute
It states indoor heat exchanger 12 to be connected to the outdoor unit, refrigerant first passes through the throttling of indoor throttling set 13 when flowing into indoor unit
Freeze after effect flowing in indoor heat exchanger 12.
The outdoor unit includes compressor 14, four-way valve 15, evaporator 16, throttling set 17, the first solenoid valve 18 and
Two solenoid valves 19, the end D of the four-way valve 15 are connected to the exhaust outlet of the compressor 14, the end S of the four-way valve 15 and institute
State the air entry connection of compressor 14, the evaporator 16, the throttling set 17, first solenoid valve 18 and the hot water
Between the end E and C-terminal of the setting four-way valve 15 that heat exchanger 1 is sequentially connected in series, one end of the indoor unit passes through described second
Solenoid valve 19 is connected to the middle position of first solenoid valve 18 and the evaporator 16, the other end and the compressor 14
Entrance connection, when the first solenoid valve 18 is opened, and second solenoid valve 19 is closed, heat pump system is heated, and refrigerant is without room
Interior machine, when the first solenoid valve 18 is closed, and second solenoid valve 19 is opened, heat pump system freezes, and refrigerant is changed without superheated water
Hot device 1 and/or heating heat exchanger 8.
Preferably, the hot water heat exchanger 1 and/or heating heat exchanger 8 are heat exchange sleeve.
A kind of control method of above-mentioned heat pump system, comprising:
Independent hot water model: the end D of the four-way valve 15 is connected to C-terminal, first solenoid valve 18 and the first water pump 7
It opens, the second solenoid valve 19 and second water pump 11 are closed, and refrigerant successively passes through compressor 14, hot water heat exchanger 1, section
It is back in compressor 14 after stream device 17, the first solenoid valve 18, evaporator 16.
In the hot water model further include:
Urban water demand h0 is detected, and sets said preset amount of water requirements h1；
If h0=0, the entrance of first triple valve 4 is connected to the first outlet of first triple valve 4, utilizes heat
The heat exchange amount of water- to-water heat exchanger 1 keeps the water temperature in water tank 2 to be in set temperature；
If 0 < h0≤h1, the entrance of first triple valve 4 are connected to the first outlet of first triple valve 4, institute
The second entrance of the second triple valve 5 and the outlet of second triple valve 5 are stated, is supplied water using water tank 2, and will enter
The water of 2 bottom of water tank is sent to exchanging heat in hot water heat exchanger 1, and the water temperature for guaranteeing that water tank 2 supplies is met the requirements；
If h0 > h1, the entrance of first triple valve 4 is connected to the second outlet of first triple valve 4, described
The outlet of the first entrance of second triple valve 5 and second triple valve 5 directly feeds hot water using hot water heat exchanger 1.
The control method further include:
Water heating and heating heating mode: the end D of the four-way valve 15 is connected to C-terminal, first solenoid valve 18, described
First water pump 7 and second water pump 11 are opened, and the second solenoid valve 19 is closed, the entrance of the heating three-way valve 10 and institute
The second outlet connection of heating three-way valve 10 is stated, refrigerant successively passes through compressor 14, heating heat exchanger 8, throttling set 17, first
It is back in compressor 14 after solenoid valve 18, evaporator 16.
In water heating and heating heating mode further include:
Detect urban water demand h0；
If h0 increases, the entrance of the heating three-way valve 10 is connected to the first outlet of the heating three-way valve 10,
I.e. when user hot water demand, which measures, to increase, all heating heat-exchange pipelines 9 are shorted, user hot water demand is preferentially met.
The control method further include:
Indoor unit refrigeration mode: the end D of the four-way valve 15 is connected to the end E, and the second solenoid valve 19 is opened, and described the
One solenoid valve 18, first water pump 7 and second water pump 11 are closed, and refrigerant successively passes through compressor 14, evaporator 16, the
It is back in compressor 14 after two solenoid valves 19,13 indoor heat exchanger 12 of indoor throttling set.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (19)
1. a kind of heat pump system, including outdoor unit and indoor unit, the outdoor unit are connected to form refrigerant circulation with the indoor unit
Pipeline, it is characterised in that: it further include that hot water heat exchanger (1), water tank (2) and domestic hot-water export (3), the hot water heat exchanger
(1) it is arranged in series in the medium circulation pipeline, and the hot water heat exchanger (1) is provided with cold water inlet and hot water outlet,
The cold water inlet and the hot water outlet are connected to the water tank (2), and the hot water outlet and the domestic hot-water go out
Directly-heated hot water line is additionally provided between mouth (3).
2. heat pump system according to claim 1, it is characterised in that: the water tank (2) is vertically arranged, and the water tank
(2) it is disposed with water inlet, cooling water outlet, hot water inlet and water outlet from the bottom to top, the water inlet and external water source connect
Logical, the cooling water outlet is connected to the cold water inlet, and the hot water inlet is connected to the hot water outlet, the water outlet and
The domestic hot-water exports (3) connection.
3. heat pump system according to claim 2, it is characterised in that: the heat pump system further includes the first triple valve (4),
The entrance of first triple valve (4) is connected to the hot water outlet, the first outlet and the heat of first triple valve (4)
Water inlet connection, the second outlet of first triple valve (4) export (3) with the domestic hot-water and are connected to.
4. heat pump system according to claim 3, it is characterised in that: the heat pump system further includes the second triple valve (5),
The first entrance of second triple valve (5) is connected to the second outlet of first triple valve (4), second triple valve
(5) second entrance is connected to the water outlet, and the outlet of second triple valve (5) and the domestic hot-water export (3)
Connection.
5. heat pump system according to claim 4, it is characterised in that: the water inlet is provided with flowmeter (6), described
Flowmeter (6) controls the connected state of first triple valve (4) and second triple valve (5).
6. heat pump system according to claim 2, it is characterised in that: the heat pump system includes the first water pump (7), described
First water pump (7) is set between the cooling water outlet and the cold water inlet.
7. heat pump system according to claim 1, it is characterised in that: the heat pump system further includes heating heat exchanger (8)
With heating heat-exchange pipeline (9), the heating heat exchanger (8) is arranged in series in the medium circulation pipeline, and the heating is changed
Pipe line (9) exchanges heat in the heating heat exchanger (8) with medium circulation pipeline.
8. heat pump system according to claim 7, it is characterised in that: the heat pump system further includes ground heating pipe, described
Ground heating pipe is connected to form the heating heat-exchange pipeline (9) with the heating heat exchanger (8).
9. heat pump system according to claim 8, it is characterised in that: the quantity of the ground heating pipe is multiple, and all
The ground heating pipe is sequentially connected in series setting.
10. heat pump system according to claim 8, it is characterised in that: the heat pump system further includes heating three-way valve
(10), the entrance of the heating three-way valve (10) and first outlet are connected to formation with the heating heat exchanger (8) and are shorted branch,
The second outlet of the heating three-way valve (10) is connected to the ground heating pipe, and second in the heating three-way valve (10) goes out
When mouth is connected to the entrance of the heating three-way valve (10), the ground heating pipe is heated, in the heating three-way valve (10)
First outlet when being connected to the entrance of the heating three-way valve (10), the ground heating pipe carries out circulation heat preservation.
11. heat pump system according to claim 7, it is characterised in that: the heat pump system further includes the second water pump (11),
Second water pump (11) is set in the heating heat-exchange pipeline (9).
12. heat pump system according to claim 1, it is characterised in that: the quantity of the indoor unit is multiple, and all institutes
Indoor unit is stated to be arranged in parallel on the outdoor unit.
13. heat pump system according to claim 12, it is characterised in that: the indoor unit include indoor heat exchanger (12) and
Indoor throttling set (13), and the indoor throttling set (13) is connected by the indoor heat exchanger (12) and the outdoor unit
It is logical.
14. heat pump system according to claim 1, it is characterised in that: the outdoor unit includes compressor (14), four-way valve
(15), evaporator (16), throttling set (17), the first solenoid valve (18) and second solenoid valve (19), the D of the four-way valve (15)
End is connected to the exhaust outlet of the compressor (14), and the end S of the four-way valve (15) and the air entry of the compressor (14) connect
Logical, the evaporator (16), the throttling set (17), first solenoid valve (18) and the hot water heat exchanger (1) are successively
Between the end E and C-terminal of the concatenated setting four-way valve (15), one end of the indoor unit passes through the second solenoid valve (19)
It is connected to the middle position of first solenoid valve (18) and the evaporator (16), the other end enters with the compressor (14)
Mouth connection.
15. a kind of control method of heat pump system described in any one of claims 1 to 14, it is characterised in that: include:
Independent hot water model: the end D of the four-way valve (15) is connected to C-terminal, first solenoid valve (18) and the first water pump
(7) open, the second solenoid valve (19) and
Second water pump (11) is closed.
16. control method according to claim 15, it is characterised in that: in the hot water model further include:
Urban water demand h0 is detected, and sets said preset amount of water requirements h1；
If h0=0, the entrance of first triple valve (4) is connected to the first outlet of first triple valve (4)；
If 0 < h0≤h1, the entrance of first triple valve (4) are connected to the first outlet of first triple valve (4), institute
State the second entrance of the second triple valve (5) and the outlet of second triple valve (5)；
If h0 > h1, the entrance of first triple valve (4) is connected to the second outlet of first triple valve (4), described
The outlet of the first entrance of second triple valve (5) and second triple valve (5).
17. control method according to claim 15, it is characterised in that: further include:
Water heating and heating heating mode: the end D of the four-way valve (15) is connected to C-terminal, first solenoid valve (18), described
First water pump (7) and second water pump (11) are opened, and the second solenoid valve (19) is closed, the heating three-way valve (10)
Entrance is connected to the second outlet of the heating three-way valve (10).
18. control method according to claim 17, it is characterised in that: also wrapped in water heating and heating heating mode
It includes:
Detect urban water demand h0；
If h0 increases, the entrance of the heating three-way valve (10) is connected to the first outlet of the heating three-way valve (10).
19. control method according to claim 15, it is characterised in that: further include:
Indoor unit refrigeration mode: the end D of the four-way valve (15) is connected to the end E, and the second solenoid valve (19) is opened, and described the
One solenoid valve (18), first water pump (7) and second water pump (11) are closed.
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