CN110375457A - Refrigerant circulation system, air conditioning system and control method of refrigerant circulation system - Google Patents
Refrigerant circulation system, air conditioning system and control method of refrigerant circulation system Download PDFInfo
- Publication number
- CN110375457A CN110375457A CN201910660186.6A CN201910660186A CN110375457A CN 110375457 A CN110375457 A CN 110375457A CN 201910660186 A CN201910660186 A CN 201910660186A CN 110375457 A CN110375457 A CN 110375457A
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- heat exchanger
- compressor
- coolant circulating
- refrigerant
- circulating system
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 114
- 238000004378 air conditioning Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002826 coolant Substances 0.000 claims description 64
- 239000007788 liquid Substances 0.000 claims description 38
- 230000008676 import Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000005012 migration Effects 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a refrigerant circulation system, an air conditioning system and a control method of the refrigerant circulation system, it is characterized by comprising a compressor (2), a first heat exchanger (8), a second heat exchanger (7) and a third heat exchanger (16), wherein the first heat exchanger (8), the second heat exchanger (7) and the third heat exchanger (16) can be selectively communicated with an air suction port or an air exhaust port of the compressor (2), the refrigerant circulating system is characterized in that the refrigerant circulating system forms a first refrigerant circulating loop and a second refrigerant circulating loop, the first refrigerant circulating loop comprises a first heat exchanger (8), a second heat exchanger (7) and a compressor (2), the second refrigerant circulating loop comprises a first heat exchanger (8), a third heat exchanger (16) and a compressor (2), and the refrigerant circulating system further comprises a first valve group (6) used for preventing the third heat exchanger (16) from sucking refrigerants when the first refrigerant circulating loop operates.
Description
Technical field
The present invention relates to field of refrigeration equipments, follow in particular to a kind of coolant circulating system, air-conditioning system and refrigerant
The control method of loop system.
Background technique
Water cooler have temperature fluctuation it is smaller, the high feature of comfort and be widely used, wherein recuperation of heat unit due to
Functional mode is more, and mode automatically controls conversion, and heat recovery mode improves using energy source, and unit efficiency height is more by some hotels
Like in equal places.
However due to recuperation of heat unit in order to meet multifunctional mode, tool has one in use process there are three heat exchanger
A heat exchanger is idle, can there are problems that refrigerant migration in operation, to cause refrigerant and shortage of oil when system long-play, draw
The system of rising is operating abnormally, or even damage compressor.
Summary of the invention
The present invention is intended to provide the control method of a kind of coolant circulating system, air-conditioning system and coolant circulating system, to change
It is apt to the problem of refrigerant existing in the prior art is migrated to idle heat exchanger.
According to an aspect of an embodiment of the present invention, the present invention provides a kind of coolant circulating system, coolant circulating systems
Including compressor, First Heat Exchanger, the second heat exchanger and third heat exchanger, First Heat Exchanger, the second heat exchanger and third heat exchange
Device may be selected to be connected to the air entry of compressor or exhaust outlet, so that coolant circulating system can form the first refrigerant circulation circuit
With the second refrigerant circulation circuit, the first refrigerant circulation circuit includes First Heat Exchanger, the second heat exchanger and compressor, the second refrigerant
Circulation loop includes First Heat Exchanger, third heat exchanger and compressor, and coolant circulating system further includes for following in the first refrigerant
Third heat exchanger is prevented to suck the first valve group of refrigerant when loop back path is run.
Optionally, coolant circulating system further include:
First four-way valve, the import being connected to including the exhaust outlet with compressor, the outlet being connected to the air entry of compressor,
The first working hole and the second working hole being connected to First Heat Exchanger；
Second four-way valve, the import being connected to including the second working hole with the first four-way valve, the air entry company with compressor
Logical outlet, the first working hole being connected to the second heat exchanger and the second working hole being connected to third heat exchanger；And
Wherein, the first valve group is arranged in the pipeline between the outlet of the second four-way valve and the air entry of compressor.
Optionally, coolant circulating system further includes the gas-liquid separator being connected to the air entry of compressor, the first valve group edge
Refrigerant flow direction is located between the outlet and gas-liquid separator of the second four-way valve.
Optionally, the first valve group includes:
First switch valve；And/or
First check valve, import including the outlet with the second four-way valve and the outlet being communicated with compressor.
Optionally, coolant circulating system further includes the second valve group, and the outlet and pressure of the first four-way valve is arranged in the second valve group
Between the air entry of contracting machine.
Optionally, coolant circulating system further includes the gas-liquid separator being connected to the air entry of compressor, the second valve group edge
Refrigerant flow direction is located between the outlet and gas-liquid separator of the first four-way valve.
Optionally, the second valve group includes:
Second switch valve；And/or
Second one-way valve, import including the outlet with the first four-way valve and the outlet being communicated with compressor.
Optionally, coolant circulating system further include:
Third refrigerant circulation circuit, including the second heat exchanger, third heat exchanger and compressor；And
Second valve group is configured to prevent First Heat Exchanger from introducing refrigerant when third refrigerant circulation circuit is run.
Optionally, the first valve group is configured to prevent the second heat exchanger from introducing refrigerant when the second refrigerant circulation circuit is run.
Optionally,
A condenser including air-conditioning system in First Heat Exchanger and third heat exchanger, another includes air-conditioning system
Evaporator；
Second heat exchanger is for hot water needed for heating user.
A kind of air-conditioning system is additionally provided according to another aspect of the present invention, and optionally, air-conditioning system includes above-mentioned
Coolant circulating system.
A kind of control method of above-mentioned coolant circulating system, control method are additionally provided according to another aspect of the present invention
Include:
The operating status of coolant circulating system is judged during coolant circulating system starting；
If the first refrigerant circulation circuit is in operating status, it is cold to prevent third heat exchanger from introducing to close the first valve group
Matchmaker.
Optionally,
If the second refrigerant circulation circuit is in operating status, the second heat exchanger is prevented to introduce refrigerant；
If the third refrigerant circulation circuit including compressor, the second heat exchanger and third heat exchanger is in operating status,
First Heat Exchanger is prevented to introduce refrigerant.
Optionally, coolant circulating system is restarted after coolant circulating system runs the predetermined time, so that compressor
After air entry aspirates the heat exchanger of off working state again, the heat exchanger is blocked again.
Using the technical solution of the application, the coolant circulating system further includes in first refrigerant circulation circuit
The first valve group of idle third heat exchanger sucking refrigerant is prevented when operation, so as to improve refrigerant existing in the prior art to
The problem of idle heat exchanger migrates.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 shows the structural schematic diagram of the coolant circulating system of the first embodiment of the present invention；
Fig. 2 shows the structural schematic diagrams of the coolant circulating system of the second embodiment of the present invention；And
Fig. 3 shows the structural schematic diagram of the coolant circulating system of the third embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 shows the structural schematic diagram of the coolant circulating system of the present embodiment.As shown in Figure 1, the refrigerant of the present embodiment
The circulatory system includes compressor 2, the first four-way valve 4, the second four-way valve 5, First Heat Exchanger 8, the second heat exchanger 7 and third heat exchange
Device 16.
First four-way valve 4 include the import d being connected to the exhaust outlet of compressor 2, be connected to the air entry of compressor 2 go out
Mouthful s, the first working hole e and the second working hole c being connected to the first import and export of First Heat Exchanger 8.
Second four-way valve 5 includes the import D being connected to the second working hole c of the first four-way valve 4, the air-breathing with compressor 2
Outlet S, the first working hole E that is connected to the first import and export of the second heat exchanger 7 of mouthful connection and with third heat exchanger 16 the
Second working hole C of one inlet and outlet connection.
Coolant circulating system further includes liquid storage device 17, and the second of the second import and export of First Heat Exchanger 8, the second heat exchanger 7
Inlet and outlet and the second import and export of third heat exchanger 16 are connected to liquid storage device 17.
Coolant circulating system further includes the first throttle portion in the pipeline being arranged between First Heat Exchanger 8 and liquid storage device 17
Part 9, the second throttle part 12 being arranged between the second heat exchanger 7 and liquid storage device 17 and setting are in third heat exchanger 16 and liquid storage
Third throttle part 14 between device 17.Wherein, the second throttle part 12 is capillary.
Solenoid valve 11 is additionally provided in pipeline between second heat exchanger 7 and liquid storage device 17.
Coolant circulating system further includes first bypass line in parallel with first throttle component 9, and the two of the first bypass line
End is connected to First Heat Exchanger 8 and liquid storage device 17 respectively, and check valve 10 is provided in the first bypass line.The import of check valve 10
End is connected to First Heat Exchanger 8, and the outlet end of check valve 10 is connected to liquid storage device 17.
Coolant circulating system further includes second bypass line in parallel with the second throttle part 12 and solenoid valve 11, by the of second
The both ends on siphunculus road are connected to the second heat exchanger 7 and liquid storage device 17 respectively, and check valve 13 is provided in the second bypass line.Unidirectionally
The input end of valve 13 is connected to the second heat exchanger 7, and the outlet end of check valve 13 is connected to liquid storage device 17.
Coolant circulating system further includes the third bypass line in parallel with third throttle part 14, and the two of third bypass line
End is connected to third heat exchanger 16 and liquid storage device 17 respectively, and check valve 15 is provided in third bypass line.Check valve 15 into
Mouth end is connected to third heat exchanger 16, and the outlet end of check valve 15 is connected to liquid storage device 17.
A condenser including air-conditioning system in First Heat Exchanger 8 and third heat exchanger 16, another includes air-conditioning
The evaporator of system；Second heat exchanger 7 is for hot water needed for heating user.
First Heat Exchanger 8 includes first shell and is arranged in first shell and exchanges heat for the first refrigerant of the refrigerant that circulates
Device (can be used as condenser, it is also possible to make evaporator), and the first refrigerant heat exchanger can be connected to compressor 2.It is also set in first shell
Set inlet and outlet.The inlet and outlet of first shell are for introducing the water with the heat exchange of the first refrigerant heat exchanger, with the first refrigerant
Water after heat exchanger heat exchange is discharged through water outlet.
Second heat exchanger 7 includes second shell and is arranged in second shell and exchanges heat for the second refrigerant of the refrigerant that circulates
Device, the second refrigerant heat exchanger can be connected to compressor 2.Inlet and outlet are set in second shell.The disengaging of second shell
Mouth is discharged with the water after the heat exchange of the second refrigerant heat exchanger through water outlet for introducing the water with the heat exchange of the second refrigerant heat exchanger, with
Provide a user hot water.
Coolant circulating system can be made to form three refrigerants by the valve position of the first four-way valve 4 of transformation and the second four-way valve 5 to follow
Loop back path.
First refrigerant circulation circuit includes compressor 2, First Heat Exchanger 8, liquid storage device 17 and the second heat exchanger 7.
Water in second heat exchanger 7 recycling First Heat Exchanger 8 when the first refrigerant circulation circuit operation of coolant circulating system
Heat.In the operation of the first refrigerant circulation circuit, the import d of the first four-way valve 4 and the second working hole c conducting, the first four-way valve 4
Outlet s and the first working hole e conducting, the import D of the second four-way valve 5 and the first working hole E conducting, the second four-way valve 5 go out
Mouth S and the second working hole C conducting.
Import d, first four-way valve second working hole c, two four of the compressed refrigerant of compressor 2 through the first four-way valve 4
The import D of port valve 5, the second four-way valve 5 the first working hole E enter the second heat exchanger 7 in the second refrigerant heat exchanger in heat
User's water, the refrigerant of the second refrigerant heat exchanger outflow of the second heat exchanger 7 flow to the in First Heat Exchanger 8 through liquid storage device 17
One refrigerant heat exchanger, and exchange heat with the water in the first shell of First Heat Exchanger 8, after exchanging heat with the water in First Heat Exchanger 8
First working hole e of the refrigerant through the first four-way valve 4 and export back the air entry that s returns to compressor 2.
Second refrigerant circulation circuit includes compressor 2, First Heat Exchanger 8, liquid storage device 17 and third heat exchanger 16.
Coolant system can be in two kinds of works of air conditioner refrigerating and heating when the second refrigerant circulation circuit operation of coolant circulating system
It is run under condition.
When first operating condition is run, the import d of the first four-way valve 4 and the second working hole c conducting, the outlet s of the first four-way valve 4
It is connected with the first working hole e, the import D of the second four-way valve 5 is connected with the second working hole C, the outlet S of the second four-way valve 5 and the
One working hole E conducting.Refrigerant is after compressor 2 compresses followed by the import d of the first four-way valve 4, the second work of the first four-way valve 4
Make mouth c, the import D of the second four-way valve 5, the second working hole C of the second four-way valve 5, third heat exchanger 16, liquid storage device 17, first
Heat exchanger 8, the first working hole e of the first four-way valve 4 and the first four-way valve 4 export s, eventually pass back to the air entry of compressor 2.Its
Middle refrigerant is condensed in third heat exchanger 16 and is evaporated in First Heat Exchanger 8.
When second operating condition is run, the import d of the first four-way valve 4 and the first working hole e conducting, the outlet s of the first four-way valve 4
It is connected with the second working hole c, the import D of the second four-way valve 5 is connected with the second working hole C, the outlet S of the second four-way valve 5 and the
One working hole E conducting.The compressed refrigerant of compressor 2 followed by the import d of the first four-way valve 4, the first four-way valve 4 first
Working hole e, First Heat Exchanger 8, liquid storage device 17, third heat exchanger 16, the second four-way valve 5 the second working hole C, the second four-way valve
5 import D, the second working hole c of the first four-way valve 4, the first four-way valve 14 outlet s, eventually pass back to the air entry of compressor.
Wherein, refrigerant is condensed in First Heat Exchanger 8 and is evaporated in third heat exchanger 16.
Third refrigerant circulation circuit includes compressor 2, the second heat exchanger 7, liquid storage device 17 and third heat exchanger 16.
Refrigerant heats the second heat exchanger 7 after compressor 2 compresses when the third refrigerant circulation circuit operation of coolant circulating system
In user's water.In the operation of third refrigerant circulation circuit, the import d of the first four-way valve 4 and the second working hole c conducting, the
The outlet s of one four-way valve 4 and the first working hole e conducting, the import D of the second four-way valve 5 and the first working hole E conducting, the two or four
The outlet S of port valve 5 and the second working hole C conducting.The compressed refrigerant of compressor 2 followed by the first four-way valve 4 import d,
Second working hole c of the first four-way valve 4, the import D of the second four-way valve 5, the first working hole E of the second four-way valve 5, the second heat exchange
Device 7, liquid storage device 17, third heat exchanger 16, the second working hole C of the second four-way valve 5, the second four-way valve 5 outlet S, finally return
To the air entry of compressor 2.
The present embodiment coolant circulating system further include be arranged in the second four-way valve 5 outlet S and compressor 1 air entry it
Between be provided with the first valve group 6 on pipeline.
First valve group 6 includes first switch valve 61 and the first check valve 62, and the first check valve 62 includes and the described 2nd 4
The import of the outlet S connection of port valve 5 and the outlet being connected to the compressor 2.Optionally, first switch valve 61 is solenoid valve.
Coolant circulating system further includes the gas-liquid separator 1 being connected to the air entry of the compressor 2,6 edge of the first valve group
Refrigerant flow direction is located between the outlet S and the gas-liquid separator 1 of second four-way valve 5.
Second valve group 3 includes second switch valve 31 and second one-way valve 32, second one-way valve 32, including with the described 1st
The import of the outlet s connection of port valve 4 and the outlet being connected to the compressor 2.Preferably, the second valve group 3 is along refrigerant flowing side
To between the outlet s and the gas-liquid separator 1 of first four-way valve 4.
When the operation of the first refrigerant circulation circuit (namely in the second heat exchanger 7 recycling First Heat Exchanger 8 when the heat of water),
First valve group 6 is closed to prevent refrigerant from migrating to third heat exchanger 16.
When the operation of the second refrigerant circulation circuit (namely when coolant circulating system operation air conditioner refrigerating or heating condition), the
One valve group 6 is closed to prevent refrigerant from migrating to the second heat exchanger 7
When the operation of third refrigerant circulation circuit (namely refrigerant heats the user in the second heat exchanger 7 after the compression of compressor 2
When with water), the second valve group 3 is closed to prevent refrigerant from migrating to First Heat Exchanger 8.
Another invention according to the present invention, the present embodiment additionally provide a kind of air-conditioning system, which includes above-mentioned
Coolant circulating system.
Another invention according to the present invention, the present embodiment additionally provide a kind of control method of coolant circulating system, control
Method includes:
The operating status of coolant circulating system is judged during coolant circulating system starting；
If first refrigerant circulation circuit is in operating status, first valve group 6 is closed to prevent the third
Heat exchanger 16 introduces refrigerant.
Preferably, if second refrigerant circulation circuit is in operating status, second heat exchanger 7 is prevented to introduce cold
Matchmaker；
If the third refrigerant circulation circuit including the compressor 2, the second heat exchanger 7 and third heat exchanger 16 is in operation
State then prevents the First Heat Exchanger 8 from introducing refrigerant.
Preferably, coolant circulating system is restarted after coolant circulating system runs the predetermined time, so that the compression
After the air entry of machine 2 aspirates the refrigerant in the heat exchanger of off working state again, the heat exchanger is blocked again.
In coolant circulating system operation, there can be high and low pressure side, and idle heat exchanger can be in normal pressure, have refrigerant
It is moved in idle heat exchanger by liquid storage device 17 or the leakage of gas-liquid separator 1, causes the refrigerant and oil missing in operating system.
For guarantee system operate normally, need in idle heat exchanger refrigerant and oil be recovered in normal operation system.
Specific implementation process: being arranged the first valve group 6 and the second valve group 3 in system principle, to reduce the migration of refrigerant in operation.Simultaneously
Increase drawing liquid control, control system is shut down after operating normally fixed T time, then by the judgement booting of system boot condition, at this time
Due to the booting vacuum of system, low pressure is formed in suction side in the short time, the refrigerant liquid of idle heat exchanger is driven to return
Stream.It is switched on after the T1 time, closes idle solenoid valve and (when such as heating water running, close the second valve group 3, when recuperation of heat is run, close
Close the first valve group 6), to guarantee that idle heat exchanger is independent, reduce refrigerant migration.
Embodiment two
Fig. 2 shows the structural schematic diagrams of the coolant circulating system of the present embodiment.As shown in Fig. 2, the refrigerant of the present embodiment
The difference of the circulatory system and embodiment one is:
First valve group 6 only includes first switch valve 61.Second valve group 3 only includes second switch valve 31.
Since the first valve group 6 and the second valve group 3 do not include check valve, idle heat exchanger and system are controlled by switch valve
Connection, while liquid oil return control is carried out back by the control of above-mentioned drawing liquid, realize that system operates normally.The substitution case study on implementation due to
There is no check valve, after refrigerant is revealed by solenoid valve, lacks the second weight refrigerant migration and hinder.
Embodiment three
Fig. 3 shows the structural schematic diagram of the coolant circulating system of the present embodiment.As shown in figure 3, the refrigerant of the present embodiment
The difference of the circulatory system and embodiment one is:
First valve group 6 only includes the first check valve 62.Second valve group 3 only includes second one-way valve 32.
Since the first valve group 6 and the second valve group 3 do not include switch valve, check valve is only set, pressure is passed through by check valve
Difference controls the connection of idle heat exchanger and system, carries out back liquid oil return control by the control of above-mentioned drawing liquid, realization system is normally transported
Row.The substitution case study on implementation is idle to change after extraneous variation of ambient temperature and system operational parameters variation due to not having solenoid valve
Hot device and low-pressure lateral pressure variation are uncertain, and refrigerant migration amount is uncontrollable.
The foregoing is merely exemplary embodiment of the present invention, are not intended to limit the invention, all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of coolant circulating system, which is characterized in that including compressor (2), First Heat Exchanger (8), the second heat exchanger (7) and
Third heat exchanger (16), the First Heat Exchanger (8), second heat exchanger (7) and the third heat exchanger (16) are optional
It selects and is connected to the air entry of the compressor (2) or exhaust outlet, so that the coolant circulating system can form the first refrigerant circulation
Circuit and the second refrigerant circulation circuit, first refrigerant circulation circuit include the First Heat Exchanger (8), second heat exchange
Device (7) and the compressor (2), second refrigerant circulation circuit include the First Heat Exchanger (8), the third heat exchanger
(16) and the compressor (2), the coolant circulating system further include for the resistance in first refrigerant circulation circuit operation
Only the first valve group (6) of third heat exchanger (16) the sucking refrigerant.
2. coolant circulating system according to claim 1, which is characterized in that further include:
First four-way valve (4), including be connected to the exhaust outlet of the compressor (2) import (d), with the compressor (2)
The outlet (s) of air entry connection, the first working hole (e) and the second working hole (c) being connected to the First Heat Exchanger (8)；
Second four-way valve (5), including be connected to the second working hole (c) of first four-way valve (4) import (D), with it is described
The outlet (S) of the air entry connection of compressor (2), the first working hole (E) for being connected to second heat exchanger (7) and with it is described
The second working hole (C) of third heat exchanger (16) connection；And
Wherein, first valve group (6) is arranged in the outlet (S) of second four-way valve (5) and the air-breathing of the compressor (2)
In pipeline between mouthful.
3. coolant circulating system according to claim 2, which is characterized in that further include the air-breathing with the compressor (2)
The gas-liquid separator (1) of mouth connection, first valve group (6) are located at going out for second four-way valve (5) along refrigerant flow direction
Between mouth (S) and the gas-liquid separator (1).
4. coolant circulating system according to claim 2, which is characterized in that first valve group (6) includes:
First switch valve (61)；And/or
First check valve (62), including the import that is connected to the outlet (S) of second four-way valve (5) and with the compressor
(2) outlet being connected to.
5. coolant circulating system according to claim 2, which is characterized in that further include the second valve group (3), second valve
Group (3) is arranged between the outlet (s) of first four-way valve (4) and the air entry of the compressor (2).
6. coolant circulating system according to claim 5, which is characterized in that further include the air-breathing with the compressor (2)
The gas-liquid separator (1) of mouth connection, second valve group (3) are located at going out for first four-way valve (4) along refrigerant flow direction
Between mouth (s) and the gas-liquid separator (1).
7. coolant circulating system according to claim 5, which is characterized in that second valve group (3) includes:
Second switch valve (31)；And/or
Second one-way valve (32), including the import that is connected to the outlet (s) of first four-way valve (4) and with the compressor
(2) outlet being connected to.
8. coolant circulating system according to claim 1, which is characterized in that further include:
Third refrigerant circulation circuit, including second heat exchanger (7), third heat exchanger (16) and the compressor (2)；And
Second valve group (3) is configured to prevent the First Heat Exchanger (8) introducing cold when the third refrigerant circulation circuit is run
Matchmaker.
9. coolant circulating system according to claim 1, which is characterized in that first valve group (6) is configured to described
Second refrigerant circulation circuit prevents second heat exchanger (7) from introducing refrigerant when running.
10. coolant circulating system according to claim 1, which is characterized in that
A condenser including air-conditioning system in the First Heat Exchanger (8) and third heat exchanger (16), another includes
The evaporator of air-conditioning system；
Second heat exchanger (7) is for hot water needed for heating user.
11. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes cold described in any one of claims 1 to 10
Matchmaker's circulatory system.
12. a kind of control method of coolant circulating system described in any one of claims 1 to 10, which is characterized in that described
Control method includes:
The operating status of coolant circulating system is judged during coolant circulating system starting；
If first refrigerant circulation circuit is in operating status, first valve group (6) is closed to prevent the third from changing
Hot device (16) introduces refrigerant.
13. control method according to claim 12, which is characterized in that
If second refrigerant circulation circuit is in operating status, second heat exchanger (7) is prevented to introduce refrigerant；
If at the third refrigerant circulation circuit including the compressor (2), second heat exchanger (7) and third heat exchanger (16)
In operating status, then the First Heat Exchanger (8) is prevented to introduce refrigerant.
14. control method according to claim 13, which is characterized in that the weight after coolant circulating system runs the predetermined time
New starting coolant circulating system, so that after the air entry of the compressor (2) aspirates the heat exchanger of off working state again, again
Block the heat exchanger.
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