[go: up one dir, main page]

CN208793221U - Scroll compressor and air conditioning system comprising same - Google Patents

Scroll compressor and air conditioning system comprising same Download PDF

Info

Publication number
CN208793221U
CN208793221U CN201821544231.9U CN201821544231U CN208793221U CN 208793221 U CN208793221 U CN 208793221U CN 201821544231 U CN201821544231 U CN 201821544231U CN 208793221 U CN208793221 U CN 208793221U
Authority
CN
China
Prior art keywords
screw compressor
fluid
shell
compression
working fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821544231.9U
Other languages
Chinese (zh)
Inventor
杨春
束宏飞
曾荡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gulun Environmental Technology Suzhou Co ltd
Original Assignee
Emerson Climate Technologies Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emerson Climate Technologies Suzhou Co Ltd filed Critical Emerson Climate Technologies Suzhou Co Ltd
Priority to CN201821544231.9U priority Critical patent/CN208793221U/en
Application granted granted Critical
Publication of CN208793221U publication Critical patent/CN208793221U/en
Priority to PCT/CN2019/105866 priority patent/WO2020057452A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The utility model relates to a scroll compressor. This scroll compressor includes: a housing; the compression mechanism comprises a fixed scroll and a movable scroll, and a series of compression cavities for compressing working fluid are formed between the movable scroll and the fixed scroll; and a seal member provided between the stationary scroll and an inner wall of the housing so as to divide the housing of the scroll compressor into an upper portion and a lower portion, a space surrounded by the upper portion of the housing and the stationary scroll being sealed by the seal member to form a seal chamber as a flash tank integrated with the scroll compressor, the seal chamber being in fluid communication with the compression chamber. The utility model discloses still relate to the air conditioning system including this scroll compressor.

Description

Screw compressor and air-conditioning system including the screw compressor
Technical field
The utility model relates to a kind of screw compressor and including the air-conditioning system of the screw compressor.
Background technique
The content of this part provides only background information relevant to the utility model, may not constitute existing skill Art.
Screw compressor is a kind of compressor mechanical of positive displacement compression.In the operation process of screw compressor, motor Power is transferred to scroll component via rotary shaft to cause the relative rotation of scroll component, to realize the pressure to working fluid Contracting.Scroll component includes dynamic vortex part and determine vortex part.
Currently, air injection enthalpy-increasing compressor is widely used on scroll compressor.Air injection enthalpy-increasing compressor is using two-stage section Intermediate gas jet technique is flowed, gas-liquid separation is carried out using flash vessel, realizes enthalpy-increasing effect.Edge injection is compressed on side when it passes through mesolow Then combination cooling normally compresses when high pressure, improve compressor air-discharging amount, reaches the mesh that heating capacity is promoted under low temperature environment 's.Efficient subcooler also plays critical effect in the entire system, on the one hand to main circulation loop working fluid into Supercooling before row throttling, increases enthalpy difference;On the other hand, to subsidiary loop, (this road working fluid will be direct by importing in the middle part of compressor Participate in compression) in low-pressure low-temperature working fluid after electric expansion valve is depressured carry out preheating appropriate, to reach suitable Middle pressure is supplied to compressor and carries out second-compressed.When outdoor temperature is very low, the decline of outdoor unit heat-exchange capacity, compressor is just The return-air amount of normal gas returning port is reduced, and compressor horsepower reduces, and cannot play best effects.But pass through intermediate pressure return-air jet port Refrigerant gas is supplemented, to increase compressor air-discharging amount, the cycle operation Fluid Volume of heat exchanger indoor unit heating increases, and realizes Heating capacity increases.Therefore it is more applicable for cold district.
Air injection enthalpy-increasing system can significantly improve the refrigerating/heating amount and system energy efficiency of high pressure ratio operating condition, in heat pump sky Much application above has application to tune/hot pump in low temp heating (hot water)/cryogenic freezing etc..There are mainly two types of modes for system form at present: The economizer system and flash distillation can system of heat exchanger (such as plate heat exchanger or double pipe heat exchanger).Wherein, plate heat exchanger Control is simple, and range of operation is wide.But flash distillation can system has greater advantage relative to economizer system in cost: flash tank Only pressure vessel, and the cost of plate heat exchanger is much higher.Although flashing can system with the advantage in cost, flash distillation Tank and compressor are two components, and system connection needs pipeline, causes increased costs, while the pressure drop of pipeline is also to systematicness It can have a certain impact.
Therefore, it is necessary to a kind of simplified system connections to reduce cost, and can improve the screw compressor of screw compressor performance.
Utility model content
One of the utility model is designed to provide a kind of screw compressor, comprising: shell;Compression mechanism comprising Determine vortex part and dynamic vortex part form a series of compressions for being used for compression work fluid between dynamic vortex part and determine vortex part Chamber;And containment member, it is arranged between determine vortex part and the inner wall of shell, so that the shell of screw compressor is divided into Portion part and low portion, the space that the upper part and determine vortex part of shell are surrounded is sealed by containment member forms seal cavity As the flash tank integral with screw compressor, seal cavity and compression chamber are in fluid communication.
In one embodiment, working fluid forms liquid level in seal cavity, and is provided in seal cavity Injection pipe, the upper end of injection pipe are located at ullage, and the lower end of injection pipe attaches to determine vortex part and determines whirlpool via being set to Fluid channel in rotating part leads to compression chamber.
In one embodiment, containment member include be arranged in it is O-shaped between determine vortex part periphery and the inner wall of shell Circle.
In one embodiment, the working fluid in compression chamber through overcompression is from the vortex being set in determine vortex part Exhaust outlet is expelled to below containment member via the fluid channel being set in determine vortex part.
In one embodiment, it is formed with fluid circulation groove on the upper surface of determine vortex part, circulates in the fluid Exhaust cover board is provided on groove, exhaust cover board and fluid circulation groove form the fluid drainage channel of sealing, in compression chamber Working fluid through overcompression is expelled to below containment member via the fluid drainage channel.
In one embodiment, injection pipe is copper pipe.
In one embodiment, working fluid is below dynamic vortex part from the compression at the low portion that shell is arranged in The discharge of machine exhaust outlet.
In one embodiment, working fluid is directed into setting by the fluid channel being arranged in determine vortex part and exists Driving mechanism in screw compressor is cooled down.
In one embodiment, compressor air suction mouth is provided at the low portion of shell, compressor air suction mouth is worn The side wall for crossing shell leads to compression chamber.
In one embodiment, exhaust outlet of compressor is provided at the low portion of shell.
In one embodiment, flash tank entrance is provided at the upper part of shell.
In one embodiment, flash tank leakage fluid dram, flash tank leakage fluid dram ratio are provided at the upper part of shell Flash tank entrance is axial on the lower.
A kind of air-conditioning system including above-mentioned screw compressor, the air-conditioning system further include: evaporator, the entrance of evaporator The flash tank leakage fluid dram for the upper part that screw compressor is set is connected to via control valve, the outlet of evaporator, which is connected to, to be set It is placed in the compressor air suction mouth of the low portion of screw compressor, to will be discharged via flash tank leakage fluid dram from seal cavity Working fluid evaporates at evaporator, and working fluid is then introduced to the seal chamber of screw compressor via compressor air suction mouth; And condenser, the entrance of condenser are connected to the exhaust outlet of compressor that the low portion of screw compressor is arranged in, condenser Outlet the flash tank entrance of the upper part for being set to screw compressor is connected to via another control valve, thus will be from vortex Compressor is condensed at condenser via the working fluid that exhaust outlet of compressor is discharged, then by working fluid via flash distillation The seal cavity of tank entrance introducing screw compressor.
The utility model is simplified system connection type, is reduced by flash tank and the integrated design of compressor This, while having the effect of that injection line low pressure drop and compression mechanism are cooling, improve system effectiveness.
Detailed description of the invention
Hereinafter reference will be made to the drawings only describes the embodiments of the present invention by way of example, in the accompanying drawings, identical spy Sign or component the same reference numerals are used to designate and the drawings are not necessarily drawn to scale, and in the accompanying drawings:
Fig. 1 is the top view of screw compressor according to prior art;
Fig. 2 is the sectional view of the screw compressor according to prior art of the line A-A interception in Fig. 1;
Fig. 3 is the schematic diagram that the air-conditioning system of flash tank is separately provided according to prior art;
Fig. 4 is the top view according to the screw compressor of the utility model embodiment;
Fig. 5 is the partial cross section of the screw compressor according to the utility model embodiment of the line B-B interception in Fig. 4 Figure, shows the position of compressor air suction mouth and flash tank entrance and a kind of flow direction of working fluid;
Fig. 6 is the part of the screw compressor according to another embodiment of the utility model of the line B-B interception in Fig. 4 Sectional view shows another flow direction of working fluid;
Fig. 7 is the partial cross section of the screw compressor according to the utility model embodiment of the line C-C interception in Fig. 4 Figure, shows the attachment of injection pipe and determine vortex part;
Fig. 8 be according to the utility model embodiment include air-conditioning system with the integrated screw compressor of flash tank Schematic diagram;And
Fig. 9 is the determine vortex part of the screw compressor according to the utility model embodiment of the line B-B interception in Fig. 4 Another embodiment partial cross-sectional view.
Specific embodiment
Following description is substantially merely exemplary and is not intended to limitation the utility model, application and purposes.It should Understand, in all these attached drawings, similar appended drawing reference indicates identical or similar part and feature.Each attached drawing only shows The design and principle for illustrating to meaning property the embodiments of the present invention, might not show each implementation of the utility model The specific size and its ratio of mode may illustrate this by the way of exaggeration in the specific part in specific attached drawing or figure The correlative detail or structure of each embodiment of utility model.
Fig. 1 is the not top view with the integrated screw compressor 100 of flash tank according to prior art.Fig. 2 is along Fig. 1 In line A-A interception screw compressor according to prior art sectional view.Fig. 3 is that compressor 100 connects within air-conditioning systems Connect the schematic diagram of state.Screw compressor 100 includes shell 10 and the compression mechanism 20, the driving mechanism that are accommodated in shell 10 30 etc..Shell 10 includes main casing 11, top cover 12, the pedestal 13 of general cylindrical shape.Compression mechanism 20 is scroll component, including fixed Scroll 21 and dynamic vortex part 22.A series of compression chambers 23 are formed between determine vortex part 21 and dynamic vortex part 22.Compression mechanism 20 are supported on main bearing seat 50.For driving mechanism 30 for example including motor, motor includes stator 31 and rotor 32.Rotor 32 is set It sets in stator 31, and can be rotated relative to stator 31.Driving mechanism 30 drives compression mechanism 20 via rotary shaft 33.Rotation Shaft 33 is arranged in rotor 32, rotates with rotor 32.The upper end of rotary shaft 33 is via bearing 51 by main bearing seat 50 Bearing.
Referring to Fig. 2, compressor air suction mouth 41 is provided on top cover 12.The upper end of compressor air suction mouth 41 reaches compression Outside machine 100.The lower end of compressor air suction mouth 41 is attached to determine vortex part 21, and is in fluid communication with compression chamber 23.From steaming The gaseous working fluid for sending out device enters compression chamber 23 via compressor air suction mouth 41, through overcompression in compression chamber, via setting The vortex exhaust outlet 42 being placed in determine vortex part enters the chamber between determine vortex part 21 and top cover 12.Gaseous working fluid Determine vortex part 21, dynamic vortex part 22 and main bearing seat 50 are flowed down through along the inner wall of top cover 12 and main casing 11, via It is arranged in main casing 11 and is located at below main bearing seat 50, the discharge compression of exhaust outlet of compressor 44 of 30 top of driving mechanism Machine 100.
Referring to Fig. 3, is condensed, be transformed at condenser via the gaseous working fluid that exhaust outlet of compressor 44 is discharged Gaseous working fluid.Gaseous working fluid flows into flash tank from flash tank entrance 81 via control valve.The saturated liquid work of high pressure After entering in the flash tank for compare low pressure as fluid, since the unexpected reduction of pressure makes these saturated liquid working fluids become one Saturation gaseous working fluid and saturated liquid working fluid under partial container pressure.Saturated liquid work under lower pressure Fluid leaves from flash tank leakage fluid dram 82, enters evaporator via control valve, and gaseous state work is then flashed in evaporator Make fluid, subsequently departs from evaporator and enter compressor air suction mouth 41.Saturation gaseous working fluid under lower pressure is from flash tank Exhaust outlet 83 leaves, and enters compressor 100 via the spray enthalpy interface 43 for being set to 11 top of main casing.
Refer again to Fig. 2, spray enthalpy interface 43 passes through main casing 11 and attaches to determine vortex part 21, and is formed in determine vortex part 21 Fluid passage in fluid communication.The fluid channel leads to compression chamber 23.Saturation gaseous working fluid from flash tank is via spray Fluid channel in enthalpy interface 43 and determine vortex part 21 enters compression chamber 23, then enters via vortex exhaust outlet 42 and be located at determine vortex Chamber between part 21 and top cover 12.Gaseous working fluid is flowed down through along the inner wall of top cover 12 and main casing 11 determines whirlpool Rotating part 21, dynamic vortex part 22 and main bearing seat 50, then compressor 100 is discharged via exhaust outlet of compressor 44.
Fig. 4 is the top view according to the screw compressor of the utility model embodiment.Fig. 5, Fig. 6 are the B-B in Fig. 4 The partial cross-sectional view of the screw compressor according to the utility model embodiment of line interception.Fig. 7 is that the line C-C in Fig. 4 is cut The partial cross-sectional view of the screw compressor according to the utility model embodiment taken.Fig. 8 is according to the utility model embodiment party Formula includes schematic diagram with the air-conditioning system of the integrated screw compressor of flash tank.Fig. 9 is the line B-B interception in Fig. 4 The screw compressor according to the utility model embodiment determine vortex part another embodiment partial cross-sectional view.
Containment member is provided between the periphery of determine vortex part 21 and the inner wall of shell 10.Containment member includes O-ring 61.Containment member divides the shell 10 of screw compressor for upper part and low portion.The upper part of shell 10 and determine whirlpool The space that rotating part 21 surrounds is sealed by containment member forms the seal cavity of a constant volume as integral with screw compressor Flash tank.
The low portion of shell 10 is arranged in compressor air suction mouth 41, and compressor air suction mouth 41 passes through the side of shell 10 Wall and compression chamber 23 are in fluid communication.The gaseous working fluid for carrying out flash-pot enters compression chamber 23 via compressor air suction mouth 41. It is formed with fluid circulation groove on the upper surface of determine vortex part 21, is provided with exhaust cover board 71 on fluid circulation groove, It is vented cover board 71 and fluid circulation groove forms the fluid drainage channel of sealing, through the workflow of overcompression in compression chamber 23 Body is expelled to below containment member via the fluid drainage channel.Gaseous working fluid is along the stream being arranged in determine vortex part 21 Dynamic channel flows down through determine vortex part 21, dynamic vortex part 22 and main bearing seat 50 then along the inner wall of main casing 11, passes through The discharge pressure of exhaust outlet of compressor 44 by being arranged in main casing 11 and being located at below main bearing seat 50, above driving mechanism 30 Contracting machine 100.Screw compressor can be designed to be vented below dynamic vortex part.It alternatively, can be by determining whirlpool referring to Fig. 6 Rotation sealed passage directs air flow to driving mechanism 30 to cool down to it.
Alternatively, fluid drainage channel can also be provided only in determine vortex part 21 by drilling.Referring to Fig. 9, Fig. 9 It is another implementation of the determine vortex part of the screw compressor according to the utility model embodiment of the line B-B interception in Fig. 4 The partial cross-sectional view of mode.Vortex exhaust outlet 42 does not lead to outside determine vortex part 21 from compression chamber 23, and in compressor diameter Blind hole connection on direction, the blind hole lead to determine vortex via another blind hole for the longitudinal direction being arranged in determine vortex part 21 Outside part 21, fluid discharge outlet is formed on determine vortex part 21.The fluid discharge outlet is located at below containment member.
Referring to Fig. 8, is condensed, be transformed at condenser via the gaseous working fluid that exhaust outlet of compressor 44 is discharged Gaseous working fluid.Gaseous working fluid via control valve from be located at shell 10 upper part at one flash tank sudden strain of a muscle Steaming pot entrance 81 flows into above-mentioned seal cavity.After the saturated liquid working fluid of high pressure enters in the seal cavity for compare low pressure, Due to the unexpected saturation gaseous state work reduced under the container pressure for making these saturated liquid working fluids become a part of pressure Fluid and saturated liquid working fluid.Saturated liquid working fluid under lower pressure is from the upper part for being located at shell 10 The flash tank leakage fluid dram 82 of flash tank of one leave, enter evaporator via control valve, and then steam in evaporator Gaseous working fluid is sent out into, evaporator is subsequently departed from and enters compressor air suction mouth 41.Flash tank leakage fluid dram 82 is than flash tank entrance 81 axial directions are on the lower.
Saturated liquid working fluid in seal cavity can cool down determine vortex part 21.
Referring to Fig. 7, injection pipe 84 is provided in above-mentioned seal cavity.Injection pipe 84 can be made of a variety of materials, institute Material is stated preferably for example including copper, iron etc..The upper end of injection pipe 84 is located at working fluid ullage, and lower end, which attaches to, determines whirlpool Rotating part 21 and with the fluid passage in fluid communication that is arranged in determine vortex part 21.Saturation gaseous working fluid under lower pressure Working fluid ullage in figure enters compression via injection pipe 84 and the fluid channel being arranged in determine vortex part 21 In chamber 23, then enter the chamber for being located at determine vortex part 21 and being vented between cover board 71 via vortex exhaust outlet 42.Gaseous working stream Body flows down through determine vortex part along the flow channel being arranged in determine vortex part 21, then along the inner wall of main casing 11 21, dynamic vortex part 22 and main bearing seat 50, via setting in main casing 11 and below main bearing seat 50, driving mechanism Compressor 100 is discharged in the exhaust outlet of compressor 44 of 30 tops.Compressor can be designed to be vented under dynamic vortex, that is, working fluid It is discharged below dynamic vortex part 22 from the exhaust outlet of compressor 44 at the low portion that shell 10 is arranged in.Alternatively, referring to Fig. 6, working fluid pass through the fluid channel being arranged in determine vortex part 21 and are directed into the driving being arranged in screw compressor Mechanism 30 is cooled down.
Screw compressor can simplify system pipeline with flash tank integrated design and connect, and reduce application cost.Simplify pipe Road connection reduces system pipeline pressure drop, improves performance.Meanwhile compressor vortex mechanism is immersed in middle pressure low temperature working fluid In, the effect of similar isotherm compression is realized, compression horsepower is reduced.
Here, the illustrative embodiments of the utility model have already been described in detail, it should be understood that, this is practical new The specific embodiment that type is not limited to above-detailed and shows.In the spirit and scope without departing from the utility model In the case of, those skilled in the art can carry out various modifications and variant to the utility model.All these modifications and variant It both falls in the scope of the utility model.Moreover, all components described herein can be by structure equivalent in other technologies Part replaces.

Claims (12)

1. a kind of screw compressor characterized by comprising
Shell;
Compression mechanism, the compression mechanism includes determine vortex part and dynamic vortex part, in the dynamic vortex part and the determine vortex part Between formed be used for compression work fluid a series of compression chambers;And
Containment member, the containment member are arranged between the determine vortex part and the inner wall of the shell, thus by the whirlpool The shell of rotation compressor is divided into upper part and low portion, the upper part of the shell and the determine vortex part The space of encirclement is sealed by the containment member forms seal cavity as the flash tank integral with the screw compressor, institute It states seal cavity and the compression chamber is in fluid communication.
2. screw compressor according to claim 1, wherein the working fluid forms liquid in the seal cavity Face, and injection pipe is provided in the seal cavity, the upper end of the injection pipe is located at the ullage, the injection The lower end of pipe attaches to the determine vortex part and leads to the compression via the fluid channel being set in the determine vortex part Chamber.
3. screw compressor according to claim 1, wherein the containment member includes being arranged outside the determine vortex part All O-rings between the inner wall of the shell.
4. screw compressor according to claim 1, wherein working fluid in the compression chamber through overcompression is from setting The vortex exhaust outlet being placed in the determine vortex part is expelled to described close via the fluid channel being set in the determine vortex part It seals below component.
5. screw compressor according to claim 1, wherein be formed with fluid stream on the upper surface of the determine vortex part Thorough cut slot, is provided with exhaust cover board on fluid circulation groove, and the exhaust cover board forms close with fluid circulation groove The fluid drainage channel of envelope, the working fluid in the compression chamber through overcompression are expelled to described via the fluid drainage channel Below containment member.
6. screw compressor according to claim 1, wherein the working fluid is below the dynamic vortex part from setting Exhaust outlet of compressor discharge at the low portion of the shell.
7. screw compressor according to claim 1, wherein the working fluid is by being arranged in the determine vortex part Fluid channel be directed into the driving mechanism being arranged in the screw compressor and cooled down.
8. screw compressor according to claim 1, wherein be provided with compression at the low portion of the shell Machine air entry, the side wall that the compressor air suction mouth passes through the shell lead to the compression chamber.
9. screw compressor according to claim 8, wherein be provided with compression at the low portion of the shell Machine exhaust outlet.
10. screw compressor according to claim 9, wherein be provided with sudden strain of a muscle at the upper part of the shell Steaming pot entrance.
11. screw compressor according to claim 10, wherein be provided with sudden strain of a muscle at the upper part of the shell Steaming pot leakage fluid dram, the flash tank leakage fluid dram are more axial than the flash tank entrance on the lower.
12. a kind of air-conditioning system including screw compressor described according to claim 1 any one of -11, feature exist In the air-conditioning system further include:
Evaporator, the entrance of the evaporator are connected to the upper part that the screw compressor is arranged in via control valve Flash tank leakage fluid dram, the outlet of the evaporator is connected to the compression for being set to the low portion of the screw compressor Machine air entry, thus by the working fluid being discharged from the seal cavity via the flash tank leakage fluid dram at the evaporator Working fluid, is then introduced the seal chamber of the screw compressor by evaporation via the compressor air suction mouth;And
Condenser, the entrance of the condenser are connected to the compressor row that the low portion of the screw compressor is arranged in Port, the outlet of the condenser are connected to the upper part for being set to the screw compressor via another control valve Flash tank entrance, thus by the working fluid being discharged from the screw compressor via the exhaust outlet of compressor in the condensation It is condensed at device, working fluid is then introduced to the seal chamber of the screw compressor via the flash tank entrance Body.
CN201821544231.9U 2018-09-20 2018-09-20 Scroll compressor and air conditioning system comprising same Active CN208793221U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201821544231.9U CN208793221U (en) 2018-09-20 2018-09-20 Scroll compressor and air conditioning system comprising same
PCT/CN2019/105866 WO2020057452A1 (en) 2018-09-20 2019-09-16 Scroll compressor and air-conditioning system comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821544231.9U CN208793221U (en) 2018-09-20 2018-09-20 Scroll compressor and air conditioning system comprising same

Publications (1)

Publication Number Publication Date
CN208793221U true CN208793221U (en) 2019-04-26

Family

ID=66210355

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821544231.9U Active CN208793221U (en) 2018-09-20 2018-09-20 Scroll compressor and air conditioning system comprising same

Country Status (1)

Country Link
CN (1) CN208793221U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020057452A1 (en) * 2018-09-20 2020-03-26 艾默生环境优化技术(苏州)有限公司 Scroll compressor and air-conditioning system comprising same
CN110925193A (en) * 2018-09-20 2020-03-27 艾默生环境优化技术(苏州)有限公司 Scroll compressor and air conditioning system comprising same
WO2022041486A1 (en) * 2020-08-25 2022-03-03 艾默生环境优化技术(苏州)有限公司 Fixed scroll of scroll compressor and scroll compressor
US11396873B2 (en) 2019-12-27 2022-07-26 Danfoss (Tianjin) Ltd. Scroll compressor comprising a valve provided on a fixed scroll that opens at a certain pressure
EP4450895A4 (en) * 2021-12-14 2025-01-22 Gree Electric Appliances, Inc. of Zhuhai Multi-stage compressor and air-conditioning unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020057452A1 (en) * 2018-09-20 2020-03-26 艾默生环境优化技术(苏州)有限公司 Scroll compressor and air-conditioning system comprising same
CN110925193A (en) * 2018-09-20 2020-03-27 艾默生环境优化技术(苏州)有限公司 Scroll compressor and air conditioning system comprising same
US11396873B2 (en) 2019-12-27 2022-07-26 Danfoss (Tianjin) Ltd. Scroll compressor comprising a valve provided on a fixed scroll that opens at a certain pressure
WO2022041486A1 (en) * 2020-08-25 2022-03-03 艾默生环境优化技术(苏州)有限公司 Fixed scroll of scroll compressor and scroll compressor
EP4450895A4 (en) * 2021-12-14 2025-01-22 Gree Electric Appliances, Inc. of Zhuhai Multi-stage compressor and air-conditioning unit

Similar Documents

Publication Publication Date Title
CN208793221U (en) Scroll compressor and air conditioning system comprising same
CN101384865B (en) Refrigerating system
CN101427083B (en) freezer
US9207004B2 (en) Refrigeration cycle apparatus
KR100944147B1 (en) Scroll compressor with steam injection system
CN101427084B (en) Refrigeration device
JP2007285681A5 (en)
KR20120048039A (en) Heat pump device, two-stage compressor, and method of operating heat pump device
WO2002065028A2 (en) Combined refrigeration system with a liquid pre-cooling heat exchanger
JP4039024B2 (en) Refrigeration equipment
JP2014211291A (en) Refrigerant flow path switching valve
JP2004137979A (en) Expansion machine
CN106568225B (en) Compressor and refrigerating plant who has it
CN100460629C (en) expander
WO2015131313A1 (en) Two-stage rotary compressor and refrigerating circulation device having same
US20090007590A1 (en) Refrigeration System
US7802447B2 (en) Positive displacement expander
JPH02230995A (en) Compressor for heat pump and operating method thereof
CN112752934B (en) Multistage compression system
US7225635B2 (en) Refrigerant cycle apparatus
JP5599514B2 (en) Two-stage compressor and heat pump device
JP2010271030A (en) Refrigeration system
JP4427675B2 (en) Refrigeration cycle
CN102588289A (en) Hermetic type compressor
EP3492748B1 (en) Compressor as well as cooling-heating refrigeration device and cooling-only refrigeration device having same

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: No. 69 Suhong West Road, Industrial Park, Suzhou City, Jiangsu Province, 215101

Patentee after: Gulun Environmental Technology (Suzhou) Co.,Ltd.

Country or region after: China

Address before: 215021 No.69 Suhong West Road, Suzhou Industrial Park, Jiangsu Province

Patentee before: EMERSON CLIMATE TECHNOLOGIES (SUZHOU) Co.,Ltd.

Country or region before: China

CP03 Change of name, title or address