CN109682104A - Coolant circulating system and air conditioner - Google Patents
Coolant circulating system and air conditioner Download PDFInfo
- Publication number
- CN109682104A CN109682104A CN201910111065.6A CN201910111065A CN109682104A CN 109682104 A CN109682104 A CN 109682104A CN 201910111065 A CN201910111065 A CN 201910111065A CN 109682104 A CN109682104 A CN 109682104A
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- Prior art keywords
- heat exchanger
- refrigerant
- centrifugal compressor
- circulating system
- coolant circulating
- Prior art date
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- 239000002826 coolant Substances 0.000 title claims abstract description 47
- 239000003507 refrigerant Substances 0.000 claims abstract description 71
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 22
- 230000008676 import Effects 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005119 centrifugation Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B31/00—Compressor 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- 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
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention relates to a kind of coolant circulating system and air conditioner, coolant circulating system includes: the first centrifugal compressor (1)；Second centrifugal compressor (2) is connected with first centrifugal compressor (1)；First Heat Exchanger (5)；It is connected to second centrifugal compressor (2), condenses heat release in it for compressed refrigerant；And second heat exchanger (13), it is connected to the First Heat Exchanger (5), is used for condensed refrigerant evaporation endothermic in it.Using the technical solution of the application, coolant circulating system includes concatenated first centrifugal compressor and the second centrifugal compressor, improves the refrigeration of air conditioner existing in the prior art or the problem that heating effect is bad.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of coolant circulating system and air conditioner.
Background technique
Lubricating oil can not needed using centrifugal compressor multi-online air-conditioning system, oil return line can be removed, simplified
Structure improves complete machine operational reliability.The disadvantage of centrifugal compressor is the pressure ratio (pressure at expulsion and pressure of inspiration(Pi) of compressor
The ratio between power) it is too low, cause air conditioner refrigerating/heating effect unobvious, meanwhile, the generally existing low-temperature heating of multi-line system declines
Subtract, compressor electric motor problem of temperature rise is also required to solve.Had using the multi-online air-conditioning system of the centrifugal compressor of single-stage following
Disadvantage:
The compressed pressure ratio of the refrigerant of the centrifugal compressor of single-stage is low, and centrifugal compressor single stage compress can reach pressure
Power ratio n≤4, pressure ratio is too small, and air conditioner refrigerating/heating effect is unobvious.
Air-conditioning system decays in the function of low-temperature heating.In low temperature environment, heat pump unit (including centrifugal compressor and be used for
The heat exchanger of refrigerant evaporation) heat exchanger in refrigerant evaporation pressure reduction, cause compressor air suction specific volume increase, refrigerant
Flow is reduced, and compressor dischargeable capacity is not fully utilized, and the heating capacity of unit is substantially decayed.
The motor temperature rise of centrifugal compressor is high.Motor temperature rise is larger in compressor operational process, if without cooling, no
It is only to consume function more, and delivery temperature is too high, and it is unfavorable to work components such as bearing of compressor, casings, and it is normal to influence compressor
Service life.
Summary of the invention
The present invention is intended to provide a kind of coolant circulating system and air conditioner, to improve air conditioner existing in the prior art
Refrigeration or the bad problem of heating effect.
According to an aspect of an embodiment of the present invention, the present invention provides a kind of coolant circulating systems, comprising:
First centrifugal compressor；
Second centrifugal compressor is connected with the first centrifugal compressor；
First Heat Exchanger；It is connected to the second centrifugal compressor, condenses heat release in it for compressed refrigerant；And
Second heat exchanger, is connected to First Heat Exchanger, is used for condensed refrigerant evaporation endothermic in it.
Optionally,
First centrifugal compressor includes first order centrifugal compressed portion and is used to compress after the compression of first order centrifugal compressed portion
Refrigerant second level centrifugal compressed portion；And/or
Second centrifugal compressor includes first order centrifugal compressed portion and is used to compress after the compression of first order centrifugal compressed portion
Refrigerant second level centrifugal compressed portion.
Optionally, coolant circulating system further includes for defeated cold to the first centrifugal compressor and/or the second centrifugal compressor
The cooling line of matchmaker.
Optionally,
The import of cooling line and the outlet of First Heat Exchanger；And/or
The outlet of cooling line is cold for conveying to the motor of the first centrifugal compressor and/or the second centrifugal compressor
Matchmaker.
Optionally, coolant circulating system further includes subcooler, and subcooler includes:
First import, the outlet with First Heat Exchanger, for introducing refrigerant to be subcooled；
First outlet, the inlet communication with the second heat exchanger, for exporting the refrigerant after being subcooled；And
Second outlet is connected to cooling line, for conveying and the refrigerant after the refrigerant heat exchange wait be subcooled to cooling line.
Optionally, subcooler further include:
Third heat exchanger is connected to the first import and first outlet；And
4th heat exchanger, is connected to second outlet, the refrigerant for circulating with First Heat Exchanger heat exchange.
Optionally, coolant circulating system further includes throttle part, and the import of throttle part is connected to First Heat Exchanger, throttling
The outlet of component is connected to the 4th heat exchanger.
Optionally, coolant circulating system further include:
First pipeline, for being connected to First Heat Exchanger and the second heat exchanger, and for First Heat Exchanger to be arranged on it；
Second pipeline, for being connected to the first pipeline and the 4th heat exchanger,
Wherein, the second piping connection is in the upstream or downstream of the First Heat Exchanger of the first pipeline.
Optionally, coolant circulating system further includes for that will drop for the first centrifugal compressor and/or the second centrifugal compressor
Refrigerant after temperature is delivered to the return line of the air entry of the first centrifugal compressor or the second centrifugal compressor.
Optionally, coolant circulating system further includes gas-liquid separator, and the import of gas-liquid separator is connected to return line, liquid
The outlet of pressure separator is connected to the air entry of the first centrifugal compressor or the second centrifugal compressor.
According to the another aspect of the application, a kind of air conditioner is provided, air conditioner includes above-mentioned coolant circulating system.
Optionally, air conditioner includes multiple indoor heat exchangers, and First Heat Exchanger or are equipped in each indoor heat exchanger
Two heat exchangers.
Using the technical solution of the application, coolant circulating system includes concatenated first centrifugal compressor and the second centrifugation pressure
Contracting machine improves the refrigeration of air conditioner existing in the prior art or the problem that heating effect is bad.
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 schematic illustration of the coolant circulating system of the 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.
Fig. 1 shows the schematic illustration of the coolant circulating system of the present embodiment.As shown in Figure 1, the refrigerant of the present embodiment
The circulatory system includes the first centrifugal compressor 1, for compressing by the second centrifugation pressure of the compressed refrigerant of the first centrifugal compressor 1
Contracting machine 2, the First Heat Exchanger 5 condensed in it for refrigerant and the second heat exchanger 13 evaporated in it for refrigerant.
The coolant circulating system of the present embodiment include the first centrifugal compressor 1 and with the first centrifugal compressor 1 concatenated the
Two centrifugal compressors 2 are compressed by the second centrifugal compressor 2 again by the compressed refrigerant of the first centrifugal compressor 1, therefore are improved
The too low problem of the ratio between the pressure at expulsion of single-stage radial compressor and pressure of inspiration(Pi).Also favorably improve air conditioner refrigeration or heating
The bad problem of effect.The heating capacity of air conditioner under cryogenic is also improved.
In some embodiments, the first centrifugal compressor 1 includes first order centrifugal compressed portion and is used to compress through the first order
The second level centrifugal compressed portion of the compressed refrigerant in centrifugal compressed portion.Wherein, the first centrifugal compressed portion includes for accelerating wait press
First impeller of the refrigerant of contracting and the first diffuser compressed in it for the refrigerant after accelerating.Wherein, the second centrifugal compressed
Portion includes for accelerating by the second impeller of the first compressed refrigerant in centrifugal compressed portion and for the refrigerant after accelerating in it
Second diffuser of compression.
In some embodiments, the second centrifugal compressor 2 includes first order centrifugal compressed portion and is used to compress through the first order
The second level centrifugal compressed portion of the compressed refrigerant in centrifugal compressed portion.Wherein, the first centrifugal compressed portion includes for accelerating wait press
First impeller of the refrigerant of contracting and the first diffuser compressed in it for the refrigerant after accelerating.Wherein, the second centrifugal compressed
Portion includes for accelerating by the second impeller of the first compressed refrigerant in centrifugal compressed portion and for the refrigerant after accelerating in it
Second diffuser of compression.
Coolant circulating system further includes reversal valve 4, and reversal valve 4 includes being connected to the exhaust outlet of the second centrifugal compressor 2
Import, the outlet being connected to the air entry of the first centrifugal compressor 1, the first working hole being connected to First Heat Exchanger 5 and with
Second working hole of two heat exchangers 13 connection.Reversal valve 4 has first state and the second state, in first state, import and the
The conducting of one working hole, the second working hole and outlet are connected；In the second state, import is connected with the second working hole, the first working hole
It is connected with outlet.Preferably, reversal valve 4 is system valve.
When reversal valve is in first state, coolant circulating system is in the first operating condition, and compressed refrigerant is through reversal valve 4
Import and the first working hole flow to First Heat Exchanger 5, and refrigerant is condensed after heat release in First Heat Exchanger 5 through first throttle component 6
The second heat exchanger 13 is flowed to, refrigerant is in the second heat exchanger 13 through the second working hole and outlet stream of reversal valve 4 after evaporation endothermic
To the air entry of the first centrifugal compressor 1.
When reversal valve is in the second state, coolant circulating system is in the second operating condition, and compressed refrigerant is through reversal valve 4
Import and the second working hole flow to the second heat exchanger 13, and refrigerant is condensed after heat release in the second heat exchanger 13 through first throttle component
6 flow to First Heat Exchanger 5, first working hole of the refrigerant in First Heat Exchanger 5 after evaporation endothermic through reversal valve 4 and outlet flow direction
The air entry of first centrifugal compressor 1.
Coolant circulating system further includes the gas-liquid separation being connected between the outlet of reversal valve 4 and the first centrifugal compressor 1
Device 14.
Coolant circulating system further includes including for the first centrifugal compressor 1 and/or the defeated refrigerant of the second centrifugal compressor 2
Cooling line 3.
The first pipeline 8 between 3 import of cooling line and First Heat Exchanger 5 and the second heat exchanger 13 is connected to, cooling line 3
Refrigerant of the outlet for being conveyed to the motor of the first centrifugal compressor 1 and/or the second centrifugal compressor 2.
Coolant circulating system further includes subcooler 7, and subcooler 7 includes the first import for being connected to First Heat Exchanger 5 and the
Third heat exchanger 9 between the first outlet of two heat exchangers 13 connection, the first import of connection and first outlet, for introducing and the
Second import of the refrigerant of three heat exchangers 9 heat exchange and for export the second outlet with the refrigerant after the heat exchange of third heat exchanger 9, the
Two outlets are connected to cooling line 3.
Subcooler 7 further includes the second heat exchanger 10 being connected between the second import and second outlet.Coolant circulating system
Further include the second throttle part 11, the import of the second throttle part 11 is connected to First Heat Exchanger 5, the outlet of throttle part 11 with
The connection of 4th heat exchanger 10.
Coolant circulating system further includes the second pipeline 15, for being connected to the second import and the first pipeline 8 of subcooler 7, the
Two throttle parts 11 are arranged in the second pipeline 15.
A part of the refrigerant of first pipeline 8 is introduced the 4th heat exchanger 10 by the second pipeline 15, due in the second pipeline 15
Equipped with throttle part 11, the refrigerant that the second pipeline 15 is introduced into evaporates in the 4th heat exchanger 10 after reducing pressure by regulating flow, to reduce by
The temperature of refrigerant in three heat exchangers 9, the refrigerant after evaporating in the 4th heat exchanger 10 are delivered to the first centrifugation pressure through cooling line 3
The inside of contracting machine 1 and the second centrifugal compressor 2 is the electric motor temperature reduction of the first centrifugal compressor 1 and the second centrifugal compressor.
Coolant circulating system further includes the first branch of the inner cavity and cooling line 3 for being connected to the first centrifugal compressor 1
With the second branch of inner cavity and cooling line 3 for being connected to the second centrifugal compressor 2.The first valve is equipped in the first branch.The
The second valve is equipped in two branches.Optionally, the first valve and/or the second valve are regulating valve, according to two specific feelings of compressor
Condition distributes refrigerant.
Coolant circulating system further include for will be the first centrifugal compressor and/or the second centrifugal compressor cooling after it is cold
Matchmaker is delivered to the return line of the air entry of the first centrifugal compressor 1.Optionally, return line is connected to gas-liquid separator 14.
Coolant circulating system includes multiple second heat exchangers 13 and is arranged correspondingly with the second heat exchanger 13 more
A third throttle part 12.
A kind of air conditioner is additionally provided according to the another aspect of the application, which includes above-mentioned refrigerant circulation system
System.
Air conditioner is multi-online air-conditioning system.Air conditioner includes multiple indoor units, and second is equipped in each indoor unit and is changed
Hot device 13.
When air conditioner is in refrigeration mode, enter the second centrifugal compressor 2 from the compressed refrigerant of the first centrifugal compressor 1
Further compression, according to actual needs, settable multiple concatenated centrifugal compressors.Repeatedly compression can effective adherence pressure ratio,
Obtain the gaseous coolant of high temperature and pressure.
The gaseous coolant of high temperature and pressure enters outdoor heat exchanger heat release, is condensed into liquid refrigerants.Liquid refrigerant stream is through being subcooled
It is divided into two-way when device, will wherein separates fraction refrigerant, exchanges heat after the second throttle part of electronics 11 with main road refrigerant,
One degree of supercooling is provided.
After branch refrigerant is subcooled to main road refrigerant, the motor part of centrifugal compressor is sprayed into, its cooling is given, enters gas later
Liquid/gas separator 12.Main road refrigerant enters the room machine after supercooling, through electric expansion valve reducing pressure by regulating flow, obtains the liquid of low-temp low-pressure
Refrigerant, heat exchanger evaporation endothermic, realizes refrigeration indoors.It is evaporated to after gaseous coolant by vapour point, by operative liquid refrigerant point
It separates out and, gaseous coolant enters compressor, forms circulation.
The heating mode of air conditioner need to switch four-way valve compared with refrigeration mode, enable refrigerant from compressor come out after, first pass through
Indoor heat exchanger heat release is crossed, then throttles and absorbs heat into outdoor heat exchanger, eventually passes back to compressor.Remaining function is identical as refrigeration.
Coolant circulating system of the invention uses multi-stage compression, and system compresses ratio can be improved and control in the reasonable scope,
Compressor volumetric efficiency is promoted, while improving complete machine capability.
Further, low-temperature refrigerant prevents motor temperature rise excessively high and damages, it is normal to improve compressor for cooling down motor
Service life.
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 (12)
1. a kind of coolant circulating system characterized by comprising
First centrifugal compressor (1)；
Second centrifugal compressor (2) is connected with first centrifugal compressor (1)；
First Heat Exchanger (5)；It is connected to second centrifugal compressor (2), condenses heat release in it for compressed refrigerant；
And
Second heat exchanger (13) is connected to the First Heat Exchanger (5), is used for condensed refrigerant evaporation endothermic in it.
2. coolant circulating system according to claim 1, which is characterized in that
First centrifugal compressor (1) includes first order centrifugal compressed portion and compresses for compressing through first order centrifugal compressed portion
The second level centrifugal compressed portion of refrigerant afterwards；And/or
Second centrifugal compressor (2) includes first order centrifugal compressed portion and compresses for compressing through first order centrifugal compressed portion
The second level centrifugal compressed portion of refrigerant afterwards.
3. coolant circulating system according to claim 1, which is characterized in that further include for first centrifugal compressed
The cooling line (3) of machine (1) and/or second centrifugal compressor (2) defeated refrigerant.
4. coolant circulating system according to claim 3, which is characterized in that
The import of the cooling line (3) and the outlet of the First Heat Exchanger (5)；And/or
The outlet of the cooling line (3) is for first centrifugal compressor (1) and/or second centrifugal compressor
(2) refrigerant of motor conveying.
5. coolant circulating system according to claim 3, which is characterized in that further include subcooler (7), the subcooler
(7) include:
First import, the outlet with the First Heat Exchanger (5), for introducing refrigerant to be subcooled；
First outlet, the inlet communication with second heat exchanger (13), for exporting the refrigerant after being subcooled；And
Second outlet is connected to the cooling line (3), is changed for conveying to the cooling line (3) with refrigerant to be subcooled
Refrigerant after heat.
6. coolant circulating system according to claim 5, which is characterized in that the subcooler (7) further include:
Third heat exchanger (9) is connected to first import and the first outlet；And
4th heat exchanger (10), is connected to the second outlet, the refrigerant for circulating with the First Heat Exchanger (9) heat exchange.
7. coolant circulating system according to claim 6, which is characterized in that further include throttle part (11), the throttling
The import of component (11) is connected to the First Heat Exchanger (5), the outlet of the throttle part (11) and the 4th heat exchanger
(10) it is connected to.
8. coolant circulating system according to claim 6, which is characterized in that further include:
First pipeline (8), for being connected to the First Heat Exchanger (5) and second heat exchanger (13), and for setting on it
Set the First Heat Exchanger (9)；
Second pipeline (15), for being connected to first pipeline (8) and the 4th heat exchanger (10),
Wherein, second pipeline (15) is connected to the upstream or downstream of the First Heat Exchanger (9) of first pipeline (8).
9. coolant circulating system according to claim 3, which is characterized in that further include for that will be the first centrifugal compressor
(1) and/or the refrigerant after second centrifugal compressor (2) cooling is delivered to the first centrifugal compressor (1) or the second centrifugation pressure
The return line of the air entry of contracting machine (2).
10. coolant circulating system according to claim 9, which is characterized in that further include gas-liquid separator (14), the gas
The import of liquid/gas separator (14) is connected to the return line, and the outlet of the hydraulic pressure separating device (14) and first centrifugation are pressed
The connection of the air entry of contracting machine (1) or the second centrifugal compressor (2).
11. a kind of air conditioner, which is characterized in that including coolant circulating system described in any one of claims 1 to 10.
12. coolant circulating system according to claim 11, which is characterized in that the air conditioner includes multiple indoor heat exchange
Device is equipped with First Heat Exchanger (5) or the second heat exchanger (13) in each indoor heat exchanger.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111065.6A CN109682104B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system and air conditioner |
| PCT/CN2019/092501 WO2020164215A1 (en) | 2019-02-12 | 2019-06-24 | Refrigerant circulation system and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111065.6A CN109682104B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109682104A true CN109682104A (en) | 2019-04-26 |
| CN109682104B CN109682104B (en) | 2024-06-07 |
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ID=66194390
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910111065.6A Active CN109682104B (en) | 2019-02-12 | 2019-02-12 | Refrigerant circulation system and air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109682104B (en) |
| WO (1) | WO2020164215A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164215A1 (en) * | 2019-02-12 | 2020-08-20 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296413A (en) * | 2014-09-24 | 2015-01-21 | 广东欧科空调制冷有限公司 | Variable frequency low-temperature strong heat air conditioner system |
| CN105865071A (en) * | 2015-01-22 | 2016-08-17 | Tcl空调器(中山)有限公司 | Air-conditioning system |
| CN106524558A (en) * | 2016-11-10 | 2017-03-22 | 青岛海尔中央空调有限公司 | Multi-split heat pump system based on three-stage centrifugal compressor |
| CN210070283U (en) * | 2019-02-12 | 2020-02-14 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4027932B2 (en) * | 2004-12-15 | 2007-12-26 | 三星電子株式会社 | Air conditioner |
| KR100865093B1 (en) * | 2007-07-23 | 2008-10-24 | 엘지전자 주식회사 | Air conditioning system |
| KR101155494B1 (en) * | 2009-11-18 | 2012-06-15 | 엘지전자 주식회사 | Heat pump |
| CN202902507U (en) * | 2012-07-09 | 2013-04-24 | 青岛海尔空调电子有限公司 | Heat pump air conditioner defrosting system |
| CN204757214U (en) * | 2015-06-02 | 2015-11-11 | 江苏海事职业技术学院 | Air conditioner |
| CN207422716U (en) * | 2017-10-31 | 2018-05-29 | 珠海格力电器股份有限公司 | Heat pump system and with its air conditioner |
| CN109237645B (en) * | 2018-11-07 | 2024-04-23 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN109682104B (en) * | 2019-02-12 | 2024-06-07 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner |
-
2019
- 2019-02-12 CN CN201910111065.6A patent/CN109682104B/en active Active
- 2019-06-24 WO PCT/CN2019/092501 patent/WO2020164215A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296413A (en) * | 2014-09-24 | 2015-01-21 | 广东欧科空调制冷有限公司 | Variable frequency low-temperature strong heat air conditioner system |
| CN105865071A (en) * | 2015-01-22 | 2016-08-17 | Tcl空调器(中山)有限公司 | Air-conditioning system |
| CN106524558A (en) * | 2016-11-10 | 2017-03-22 | 青岛海尔中央空调有限公司 | Multi-split heat pump system based on three-stage centrifugal compressor |
| CN210070283U (en) * | 2019-02-12 | 2020-02-14 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164215A1 (en) * | 2019-02-12 | 2020-08-20 | 珠海格力电器股份有限公司 | Refrigerant circulation system and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020164215A1 (en) | 2020-08-20 |
| CN109682104B (en) | 2024-06-07 |
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