CN114087181A - Pump body subassembly, doublestage compressor and air conditioning system - Google Patents
Pump body subassembly, doublestage compressor and air conditioning system Download PDFInfo
- Publication number
- CN114087181A CN114087181A CN202111500729.1A CN202111500729A CN114087181A CN 114087181 A CN114087181 A CN 114087181A CN 202111500729 A CN202111500729 A CN 202111500729A CN 114087181 A CN114087181 A CN 114087181A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- eccentric part
- sheet groove
- pump body
- degrees
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The application provides a pump body subassembly, doublestage compressor and air conditioning system. The pump body assembly comprises a crankshaft, a first eccentric part and a second eccentric part; the first cylinder is sleeved on the first eccentric part, and a first slide sheet groove is formed in the first cylinder; the second cylinder is sleeved on the second eccentric part, and a second slide sheet groove is formed in the second cylinder; the included angle between the first eccentric part and the second eccentric part is 180 degrees, the included angle between the center lines of the first slide sheet groove and the second slide sheet groove is alpha, and alpha is more than or equal to 60 degrees and less than 120 degrees. This application improves the linking smoothness nature that first cylinder exhausts and the second cylinder is breathed in through the relative position angle of first cylinder of rational design and second cylinder, reduces the condition that middle chamber pressure pulsation and high-pressure stage breathed in the evacuation, and the promotion performance.
Description
Technical Field
The application belongs to the technical field of double-stage compressors, and particularly relates to a pump body assembly, a double-stage compressor and an air conditioning system.
Background
The pump body of the existing double-stage compressor comprises two sets of compression assemblies (the compression assemblies comprise parts such as an air cylinder, a sliding vane, a roller, a crankshaft and the like, and two closed working chambers are formed by an inner circle of the air cylinder, an outer circle of the roller and a head of the sliding vane, one cavity is an air suction chamber, the other cavity is a compression chamber), the low-pressure stage compression assembly compresses refrigerant from low-temperature low-pressure vapor to medium-temperature medium-pressure vapor, then the refrigerant is discharged to the middle chamber and mixed with gas in a flash evaporator in an air conditioning system, and the high-pressure stage compression assembly absorbs the medium-temperature medium-pressure vapor from the middle chamber and then compresses the compressed high-temperature high-pressure vapor to discharge the high-temperature high-pressure gas into the cavity of a compressor shell.
The working chamber (including the suction chamber and the compression chamber) is a crescent chamber, as shown in fig. 1, so that when the compression assembly rotates for one period of 360 °, the volume change rate of the suction/compression chamber of the low pressure stage and the volume change rate of the suction/compression chamber of the high pressure stage are different (the volume change rate refers to the change value of the volume of the suction/compression chamber per 1 ° rotation of the crankshaft/roller), and therefore, the following problems exist: when the low-pressure stage compression assembly reaches the maximum exhaust rate and the suction rate of the high-pressure stage compression assembly is not the maximum, pressure pulsation is generated in the middle cavity under the state, and pulsation loss is caused; in another state, when the high-pressure stage has the largest air suction rate and the low-pressure stage has a smaller exhaust rate, the high-pressure stage has insufficient air suction, so that the phenomenon of vacuumizing is generated, the power consumption is increased, and the performance of the compressor is not favorable.
Disclosure of Invention
Therefore, the application provides a pump body subassembly, double stage compressor and air conditioning system, can solve the unmatched problem of prior art low-pressure stage compression subassembly and high-pressure stage compression subassembly operation.
In order to solve the above problem, the present application provides a pump body assembly including:
a crankshaft including a first eccentric portion and a second eccentric portion;
the first cylinder is sleeved on the first eccentric part, and a first slide sheet groove is formed in the first cylinder;
the second cylinder is sleeved on the second eccentric part, and a second slide sheet groove is formed in the second cylinder;
the included angle between the first eccentric part and the second eccentric part is 180 degrees, the included angle between the center lines of the first slide sheet groove and the second slide sheet groove is alpha, and alpha is more than or equal to 60 degrees and less than 120 degrees.
Optionally, the included angle between the center lines of the first slide plate groove and the second slide plate groove is alpha, and the included angle satisfies 80 degrees ≦ alpha < 110 degrees.
A pump body assembly comprising:
a crankshaft including a first eccentric portion and a second eccentric portion;
the first cylinder is sleeved on the first eccentric part, and a first slide sheet groove is formed in the first cylinder;
the second cylinder is sleeved on the second eccentric part, and a second slide sheet groove is formed in the second cylinder;
the included angle between the first sliding sheet groove and the second sliding sheet groove is 0 degree, the included angle between the first eccentric part and the second eccentric part is beta, and the included angle is larger than or equal to 80 degrees and smaller than or equal to 140 degrees.
Optionally, the included angle between the first eccentric part and the second eccentric part is beta, and the included angle satisfies 80 DEG beta 110 deg.
According to another aspect of the present application, there is provided a two-stage compressor comprising a pump body assembly as described above.
Optionally, the dual stage compressor comprises a diaphragm disposed between the first cylinder and the second cylinder; an air flow channel is arranged on the partition plate, and an air outlet of the first air cylinder is conveyed to the second air cylinder through the air flow channel.
Optionally, the partition plate includes a first partition plate and a second partition plate, the first partition plate and the second partition plate are disposed in an abutting manner, and a medium-pressure cavity is formed between the first partition plate and the second partition plate; the air flow channel penetrates through the medium-pressure cavity.
According to a further aspect of the present application, there is provided an air conditioning system comprising a pump body assembly as described above or a dual stage compressor as described above.
Optionally, the air conditioning system further includes a flash evaporator, and the flash evaporator is communicated with the airflow channel and can supplement air and increase enthalpy to the airflow channel.
The application provides a pump body subassembly includes: a crankshaft including a first eccentric portion and a second eccentric portion; the first cylinder is sleeved on the first eccentric part, and a first slide sheet groove is formed in the first cylinder; the second cylinder is sleeved on the second eccentric part, and a second slide sheet groove is formed in the second cylinder; the included angle between the first eccentric part and the second eccentric part is 180 degrees, the included angle between the center lines of the first slide sheet groove and the second slide sheet groove is alpha, and alpha is more than or equal to 60 degrees and less than 120 degrees.
This application improves the linking smoothness nature that first cylinder exhausts and the second cylinder is breathed in through the relative position angle of first cylinder of rational design and second cylinder, reduces the condition that middle chamber pressure pulsation and high-pressure stage breathed in the evacuation, and the promotion performance.
Drawings
FIG. 1 is a schematic diagram of the operating principle of a two-stage compressor;
FIG. 2 is an axial cross-sectional structural view of a pump block assembly according to an embodiment of the present application;
FIG. 3 is a schematic transverse cross-sectional view of a pump block assembly according to an embodiment of the present application;
FIG. 4 is another schematic transverse cross-sectional view of a pump block assembly according to an embodiment of the present application;
fig. 5 is a diagram illustrating the performance enhancement of the dual-stage compressor according to the embodiment of the present application.
The reference numerals are represented as:
1. a first cylinder; 11. a first slide groove; 2. a second cylinder; 21. a second slide groove; 3. a partition plate; 4. a crankshaft; 41. a first eccentric portion; 42. a second eccentric portion.
Detailed Description
Referring collectively to fig. 1-5, according to an embodiment of the present application, a pump body assembly includes:
a crankshaft 4 including a first eccentric portion 41 and a second eccentric portion 42;
the first cylinder 1 is sleeved on the first eccentric part 41, and a first slide sheet groove 11 is formed in the first cylinder 1;
the second cylinder 2 is sleeved on the second eccentric part 42, and a second slide sheet groove 21 is formed in the second cylinder 2;
the included angle between the first eccentric part 41 and the second eccentric part 42 is 180 degrees, the included angle between the center lines of the first slide sheet groove 11 and the second slide sheet groove 21 is alpha, and alpha is more than or equal to 60 degrees and less than 120 degrees.
Preferably, the included angle between the central lines of the first slide sheet groove 11 and the second slide sheet groove 21 is alpha, and the included angle satisfies that alpha is greater than or equal to 80 degrees and less than 110 degrees.
The first cylinder 1 and the second cylinder 2 form a multi-stage pump body assembly, the first slide sheet groove 11 in the first cylinder 1 in the low-pressure stage compression assembly is used as a reference, the included angle alpha between the second slide sheet groove 21 in the second cylinder 2 of the high-pressure stage compression assembly and the included angle alpha is 60-120 degrees when the pump body assembly is seen from a top view, the second slide sheet groove 21 is arranged in the anticlockwise direction of the first slide sheet groove 11, at the moment, when the exhaust rate of the first cylinder 1 reaches the maximum, the suction rate of the second cylinder 2 is in a larger state, the phenomenon that the exhaust gas of the first cylinder 1 stays in a middle cavity to generate pressure pulsation loss can be effectively avoided, and the performance of the compressor is effectively improved. Meanwhile, in this state, when the suction rate of the second cylinder 2 is large, the exhaust rate of the first cylinder 1 is at a large level, so that the serious vacuum pumping phenomenon is avoided, and the power consumption is increased.
Furthermore, for a new performance evaluation standard of the compressor, five different sliding vane groove angles are designed for trial production and performance testing, and it is found that when an included angle α between the second sliding vane groove 21 of the second cylinder 2 and the second sliding vane groove 21 of the first cylinder 1 is 80 ° to 110 °, as shown in fig. 5, the performance of the compressor is greatly improved, and the improvement of high frequency is more significant.
A pump body assembly comprising:
a crankshaft 4 including a first eccentric portion 41 and a second eccentric portion 42;
the first cylinder 1 is sleeved on the first eccentric part 41, and a first slide sheet groove 11 is formed in the first cylinder 1;
the second cylinder 2 is sleeved on the second eccentric part 42, and a second slide sheet groove 21 is formed in the second cylinder 2;
the included angle between the first sliding sheet groove 11 and the second sliding sheet groove 21 is 0 degree, the included angle between the first eccentric part 41 and the second eccentric part 42 is beta, and the included angle is larger than or equal to 80 degrees and smaller than or equal to 140 degrees.
Preferably, the included angle between the first eccentric portion 41 and the second eccentric portion 42 is β, which satisfies 80 ° ≦ β ≦ 110 °.
Different from the angle difference for limiting the two sliding sheet grooves, the sliding sheet groove angle in the two cylinders is 0 degree, and when the included angle beta between the first eccentric part 41 and the second eccentric part 42 on the crankshaft 4 is 80-140 degrees, the air suction rate of the second cylinder 2 can be ensured to be in a larger state when the air discharge rate of the first cylinder 1 is larger, and simultaneously, the redundant power consumption brought by the vacuum pumping of the air suction cavity of the high-pressure stage compression assembly can be improved to a certain extent, and the performance of the compressor can be effectively improved.
According to another aspect of the present application, there is provided a two-stage compressor comprising a pump body assembly as described above.
In some embodiments, the two-stage compressor comprises a partition 3, said partition 3 being provided between said first cylinder 1 and said second cylinder 2; an air flow channel is arranged on the partition plate 3, and an exhaust port of the first air cylinder 1 is conveyed to the second air cylinder 2 through the air flow channel.
Preferably, the partition board 3 comprises a first partition board and a second partition board, the first partition board and the second partition board are arranged in an abutting mode, and a medium-pressure cavity is formed between the first partition board and the second partition board; the air flow channel penetrates through the medium-pressure cavity.
In the prior art, the first cylinder 1 generally adopts a double-row structure, specifically, exhaust ports are arranged on a lower flange and a lower partition plate 3, one part of exhaust gas after primary compression is directly exhausted to a middle cavity of a middle partition plate 3 from the exhaust port on the lower partition plate 3 and then is sucked by an upper cylinder, the other part of exhaust gas is exhausted to a middle cavity of the lower flange from the exhaust port on the lower flange and then enters the middle cavity of the lower partition plate 3 through a middle circulation channel on the lower partition plate 3, and then is sucked by the upper cylinder.
Therefore, to the problem that the low-pressure stage exhaust to the high-pressure stage suction circulation channel of the existing double-stage compressor is long and the flow loss is large, the first cylinder 1 is designed to be of a single exhaust structure, and the low-pressure stage exhaust cavity is arranged in the middle pressure cavity of the partition plate 3 of the high-low pressure stage eccentric part connecting section, so that the exhaust of the first stage is directly sucked away by the suction cavity of the high-pressure stage compression assembly, the flow loss of the low-pressure stage exhaust is effectively reduced, and the performance of the compressor is improved.
According to a further aspect of the present application, there is provided an air conditioning system comprising a pump body assembly as described above or a dual stage compressor as described above.
In some embodiments, the air conditioning system further comprises a flash evaporator, wherein the flash evaporator is communicated with the air flow channel and can supplement air and enthalpy into the air flow channel.
In the air-conditioning circulating system, gas in the flash evaporator is injected into the gas flow channel to play a role in supplementing gas and increasing enthalpy, so that the performance of the air-conditioning system with the two-stage compressor is improved.
It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (9)
1. A pump body assembly, comprising:
a crankshaft (4) comprising a first eccentric portion (41) and a second eccentric portion (42);
the first air cylinder (1) is sleeved on the first eccentric part (41), and a first slide sheet groove (11) is formed in the first air cylinder (1);
the second cylinder (2) is sleeved on the second eccentric part (42), and a second slide sheet groove (21) is formed in the second cylinder (2);
the included angle between the first eccentric part (41) and the second eccentric part (42) is 180 degrees, the included angle between the center lines of the first slide sheet groove (11) and the second slide sheet groove (21) is alpha, and alpha is more than or equal to 60 degrees and less than 120 degrees.
2. The pump body assembly according to claim 1, wherein the included angle of the center lines of the first vane groove (11) and the second vane groove (21) is α, and is satisfied such that 80 ° α < 110 °.
3. A pump body assembly, comprising:
a crankshaft (4) comprising a first eccentric portion (41) and a second eccentric portion (42);
the first air cylinder (1) is sleeved on the first eccentric part (41), and a first slide sheet groove (11) is formed in the first air cylinder (1);
the second cylinder (2) is sleeved on the second eccentric part (42), and a second slide sheet groove (21) is formed in the second cylinder (2);
the included angle between the first sliding sheet groove (11) and the second sliding sheet groove (21) is 0 degree, the included angle between the first eccentric part (41) and the second eccentric part (42) is beta, and the included angle is larger than or equal to 80 degrees and smaller than or equal to 140 degrees.
4. The pump body assembly according to claim 3, characterized in that the angle included between the first eccentric portion (41) and the second eccentric portion (42) is β, satisfying 80 ° ≦ β ≦ 110 °.
5. A two-stage compressor, characterized by comprising a pump body assembly according to any one of claims 1 to 4.
6. The two-stage compressor according to claim 5, characterized in that it comprises a partition (3), said partition (3) being provided between said first cylinder (1) and said second cylinder (2); an air flow channel is arranged on the partition plate (3), and an exhaust port of the first air cylinder (1) is conveyed to the second air cylinder (2) through the air flow channel.
7. The two-stage compressor according to claim 6, characterized in that the partition (3) comprises a first partition and a second partition, which are arranged in abutment and between which an intermediate pressure chamber is defined; the air flow channel penetrates through the medium-pressure cavity.
8. An air conditioning system comprising a pump body assembly according to any one of claims 1 to 4 or a two-stage compressor according to any one of claims 5 to 7.
9. The air conditioning system as claimed in claim 8, further comprising a flash evaporator connected to the air flow passage for supplying air and increasing enthalpy to the air flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111500729.1A CN114087181B (en) | 2021-12-09 | 2021-12-09 | Pump body assembly, two-stage compressor and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111500729.1A CN114087181B (en) | 2021-12-09 | 2021-12-09 | Pump body assembly, two-stage compressor and air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114087181A true CN114087181A (en) | 2022-02-25 |
| CN114087181B CN114087181B (en) | 2023-05-23 |
Family
ID=80307098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111500729.1A Active CN114087181B (en) | 2021-12-09 | 2021-12-09 | Pump body assembly, two-stage compressor and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114087181B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020159904A1 (en) * | 2000-03-15 | 2002-10-31 | Toshiyuki Ebara | Double-cylinder two-stage compression rotary compressor |
| JP2010156226A (en) * | 2008-12-26 | 2010-07-15 | Sanyo Electric Co Ltd | Rotary compressor |
| CN202250863U (en) * | 2011-06-30 | 2012-05-30 | 珠海格力电器股份有限公司 | Double-stage rotating compressor |
| CN104564675A (en) * | 2014-11-04 | 2015-04-29 | 广东美芝制冷设备有限公司 | Dual-cylinder rotation type compressor and refrigerator with same |
| CN104632624A (en) * | 2013-12-25 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-cylinder double-stage compressor |
| CN104632627A (en) * | 2014-07-28 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor pump body and compressor comprising same |
| CN104632623A (en) * | 2013-12-23 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage compressor |
| US20160305429A1 (en) * | 2013-12-05 | 2016-10-20 | Guangdong Meizhi Compressor Co., Ltd. | Rotary compressor and compression unit thereof, and air conditioner |
-
2021
- 2021-12-09 CN CN202111500729.1A patent/CN114087181B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020159904A1 (en) * | 2000-03-15 | 2002-10-31 | Toshiyuki Ebara | Double-cylinder two-stage compression rotary compressor |
| CN1380947A (en) * | 2000-03-15 | 2002-11-20 | 三洋电机株式会社 | 2-cylinder, 2-stage compression type rotary compressor |
| JP2010156226A (en) * | 2008-12-26 | 2010-07-15 | Sanyo Electric Co Ltd | Rotary compressor |
| CN202250863U (en) * | 2011-06-30 | 2012-05-30 | 珠海格力电器股份有限公司 | Double-stage rotating compressor |
| US20160305429A1 (en) * | 2013-12-05 | 2016-10-20 | Guangdong Meizhi Compressor Co., Ltd. | Rotary compressor and compression unit thereof, and air conditioner |
| CN104632623A (en) * | 2013-12-23 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage compressor |
| CN104632624A (en) * | 2013-12-25 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-cylinder double-stage compressor |
| CN104632627A (en) * | 2014-07-28 | 2015-05-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor pump body and compressor comprising same |
| CN104564675A (en) * | 2014-11-04 | 2015-04-29 | 广东美芝制冷设备有限公司 | Dual-cylinder rotation type compressor and refrigerator with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114087181B (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203272136U (en) | Single-cylinder multi-stage compressor | |
| WO2021103552A1 (en) | Compressor and refrigeration device | |
| CN110360111A (en) | Cylinder, pump assembly, compressor and air conditioner | |
| US20220136507A1 (en) | Compressor and air conditioning system | |
| CN202900660U (en) | Dual-rotor two-stage enthalpy increasing compressor, air conditioner and heat pump water heater | |
| CN103807175A (en) | Dual-rotor two-stage enthalpy increasing compressor, air conditioner and heat pump water heater | |
| CN114087181B (en) | Pump body assembly, two-stage compressor and air conditioning system | |
| CN112814900A (en) | Screw pump exhaust pressure stabilizing structure | |
| CN114151347B (en) | Cylinder, pump body structure, compressor and air conditioner | |
| CN105909498A (en) | Two-stage stroke type rotary compressor | |
| CN107228070A (en) | Compressor and the refrigeration system with it | |
| CN209510632U (en) | The Two-stage Compression list scroll compression water cooling pump housing | |
| CN110863987B (en) | Compressor and refrigeration equipment | |
| CN210397095U (en) | Compression assembly of compressor | |
| CN210033831U (en) | Pump body subassembly and compressor | |
| CN210564945U (en) | Novel refrigeration compressor | |
| CN112460022A (en) | Pump body assembly and fluid machine with same | |
| CN208311034U (en) | A kind of scroll compressor | |
| CN111005870A (en) | Double-pump-body assembly, compressor and air conditioning system | |
| CN111059056A (en) | Pump body assembly, rotary compressor and air conditioner | |
| CN2874070Y (en) | Double blade compressor with direct flow air suction valve | |
| CN211343353U (en) | Double-pump-body assembly, compressor and air conditioning system | |
| CN109555685A (en) | The Two-stage Compression list scroll compression water cooling pump housing | |
| CN2578564Y (en) | Duplex two-stage compressing oscillating piston compressor | |
| CN114370399B (en) | Pump body subassembly and doublestage compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |