CN108999781A - Pump assembly and compressor - Google Patents
Pump assembly and compressor Download PDFInfo
- Publication number
- CN108999781A CN108999781A CN201810973462.XA CN201810973462A CN108999781A CN 108999781 A CN108999781 A CN 108999781A CN 201810973462 A CN201810973462 A CN 201810973462A CN 108999781 A CN108999781 A CN 108999781A
- Authority
- CN
- China
- Prior art keywords
- pump assembly
- air
- groove
- lower flange
- cylinder
- 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.)
- Pending
Links
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
- F04C18/356—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 outer 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
Abstract
The present invention provides a kind of pump assembly and compressors, pump assembly includes: the upper flange set gradually from top to bottom, cylinder and lower flange, there are two exhaust outlet and two sliding vane grooves for cylinder tool, slide plate is equipped in each sliding vane groove, first side of each sliding vane groove is equipped with an exhaust outlet, upper flange, which is equipped with, corresponds two gas vents being connected to two exhaust outlets, cylinder also has there are two air inlet, second side opposite with the first side of each sliding vane groove is equipped with an air inlet, two gas outlets that lower flange is equipped with air entry and is connected to air entry, two gas outlets are connected to two air inlet one-to-one correspondence, opening and closing structure is equipped at gas outlet, opening and closing structure closes the closed state of gas outlet when opening the opening state and non-air-breathing of gas outlet when having air-breathing.Technical solution of the present invention avoids air-breathing from flowing back, and promotes compressor efficiency, improves assembly efficiency, does not influence compression efficiency.
Description
Technical field
The present invention relates to Compressor Technology fields, and in particular to a kind of pump assembly and compressor.
Background technique
Currently, compressor is all single cylinder, twin-tub, three cylinders or varying capacity structure, operational process is independent cavity pressure
It is discharged after contracting, or is discharged after being recompressed into two-stage compression cavity.But by entering back into second level after cavity independent compression
This scheme of compression energy loss can occur in compression process, so that compressor horsepower is high, and transmit in gas
In the process, it is possible to leak or loss occur, reduce gas compression amount to a certain extent, make compressor efficiency by certain
It influences.
In view of the foregoing drawbacks, a kind of single-cylinder double-vane formula compressor is provided in the prior art, which includes cylinder,
It is set on cylinder there are two air entry, two exhaust outlets and two sliding vane grooves, slide plate is set in each sliding vane groove, two slide plates are by gas
The cavity of cylinder is separated into two independent operating rooms, air-breathing is carried out by respective air entry, upon compression by respective exhaust outlet
Exhaust.When two slide plate interval 180 degrees are arranged, when roller turns within the scope of certain angle, two slide plates and roller meeting
One operating room is separated into suction chamber and discharge chamber, at the same time, another operating room is known as being connected to air entry and exhaust outlet
Intermediate cavity.When turning to some angle, the volume of intermediate cavity is maximum, and another operating room carries out air-breathing, compression, exhaust at this time
Process causes air-breathing to flow back, air inflow since Suck and exhaust pressure difference will lead to the gas pressure in intermediate cavity greater than pressure of inspiration(Pi)
Decline, influences inspiratory flow, causes the loss of compressor compresses function to increase, reduce the efficiency of compressor.Air-breathing is returned in order to prevent
Stream, needs that inlet valve is arranged at air entry, inlet valve is installed on cylinder, cylinder is be easy to cause to have clearance, have portion gas not
It can compress, and then influence compression efficiency, also, be inconvenient to assemble when assembly inlet valve at air entry, assembly efficiency is low.
Summary of the invention
The main purpose of the present invention is to provide a kind of pump assembly and compressors, to solve in the prior art in cylinder
The problem of inlet valve influences compression efficiency and assembly efficiency is arranged in air entry.
To achieve the above object, the present invention provides a kind of pump assemblies, comprising: the upper method set gradually from top to bottom
Blue, cylinder and lower flange, cylinder tool are equipped with slide plate, each slide plate in each sliding vane groove there are two exhaust outlet and two sliding vane grooves
First side of slot is equipped with an exhaust outlet, and upper flange, which is equipped with, corresponds two gas vents being connected to, gas with two exhaust outlets
Cylinder also has there are two air inlet, and second side opposite with the first side of each sliding vane groove is equipped with an air inlet, sets on lower flange
Two gas outlets for having air entry and being connected to air entry, two gas outlets are connected to two air inlet one-to-one correspondence, gas outlet
Place is equipped with opening and closing structure, and opening and closing structure closes the pass of gas outlet when opening the opening state and non-air-breathing of gas outlet when having air-breathing
Closed state.
Further, opening and closing structure is elastic valve plate, and the first end of elastic valve plate is fixed on lower flange, elastic valve plate
Second end is free end and closes gas outlet.
Further, the surface towards cylinder of lower flange is equipped with installation groove, and elastic valve plate is mounted on installation groove
In.
Further, the first end of elastic valve plate is fixed on lower flange by fastener.
Further, there is the evacuation groove of evacuation fastener on the surface towards lower flange of cylinder.
Further, the surface of the separate cylinder of lower flange is equipped with groove, and pump assembly further includes the lid for blocking groove
Plate, groove are connected to air entry, two gas outlets.
Further, air entry radially extending along lower flange, and/or, gas outlet is along the axially extending of lower flange.
Further, air inlet is the air inlet groove being arranged on the surface towards lower flange of cylinder.
Further, the groove depth ecto-entad of air inlet groove is gradually increased, and/or, the opposite two sidewalls of air inlet groove
It is arranged in parallel.
The present invention also provides a kind of compressor, including pump assembly, pump assembly is above-mentioned pump assembly.
Technical solution of the present invention has the advantages that two that lower flange is equipped with air entry and is connected to air entry go out
Port, two gas outlets be connected tos with two air inlets one-to-one correspondence, and when air-breathing, opening and closing structure opening gas outlet, gas passes through suction
Port, gas outlet, air inlet enter in the cavity of cylinder, complete air-breathing；Not when air-breathing, i.e., air-breathing is completed, and opening and closing structure closes
Gas outlet is closed, at this point, the gas into cylinder can not back into lower flange, opening and closing structure makes gas can only be into cannot
Out, therefore no matter which angle roller operates in the cavity of cylinder to, or even in the volume maximum of intermediate cavity, suction and discharge are all
Make the gas pressure in intermediate cavity be higher than pressure of inspiration(Pi) in the same side, the intracorporal compression of each chamber can be completed, be not in
The problem of air-breathing flows back, even if gas pressure in intermediate cavity again in the high cavity that also cannot be introduced into lower flange, to avoid
Air-breathing reflux, reduces the loss of compressor, promotes the efficiency of compressor.The setting opening and closing structure at the gas outlet of lower flange, one
Aspect will not influence the structure of cylinder, and then will not influence compression efficiency, on the other hand convenient for assembly, improve assembly efficiency.It is logical
It crosses two slide plates and the cavity of cylinder is separated into two independent working cavities, distributed to the gas of air-breathing by an air entry
Two independent working cavities are compressed, and after compression, compressed gas is discharged two independent working cavities, are reduced
The energy loss of gas compression transmitting, can be obviously improved the efficiency of compressor.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 shows the decomposition diagram of the embodiment of pump assembly according to the present invention；
Fig. 2 shows the schematic cross-sectional views of the pump assembly of Fig. 1；
Fig. 3 shows the schematic top plan view of the upper flange of the pump assembly of Fig. 1；
Fig. 4 shows the stereoscopic schematic diagram of the cylinder of the pump assembly of Fig. 1；
Fig. 5 shows the elevational schematic view of the cylinder of Fig. 4；
Fig. 6 shows the elevational schematic view of the lower flange of the pump assembly of Fig. 1.
Wherein, the appended drawing reference in above-mentioned attached drawing are as follows:
10, upper flange；11, gas vent；20, cylinder；21, air inlet；22, exhaust outlet；23, sliding vane groove；24, it avoids recessed
Slot；30, lower flange；31, air entry；32, gas outlet；33, groove；50, cover board；60, elastic valve plate；70, screw.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figures 1 to 6, the pump assembly of the present embodiment includes: upper flange 10, the cylinder set gradually from top to bottom
20 and lower flange 30, the tool of cylinder 20 is equipped with slide plate in each sliding vane groove 23, each there are two exhaust outlet 22 and two sliding vane grooves 23
First side of sliding vane groove 23 is equipped with an exhaust outlet 22, and lower flange 30, which is equipped with, corresponds two be connected to two exhaust outlets 22
A gas vent 11, cylinder 20 also have there are two air inlet 21, and second side opposite with the first side of each sliding vane groove 23 is equipped with one
A air inlet 21, two gas outlets 32 that lower flange 30 is equipped with air entry 31 and is connected to air entry 31, two gas outlets 32
It is connected to two one-to-one correspondence of air inlet 21, opening and closing structure is equipped at gas outlet 32, opening and closing structure opens outlet when having air-breathing
The closed state of gas outlet 32 is closed when the opening state and non-air-breathing of mouth 32.
Using the pump assembly of the present embodiment, lower flange 30 is equipped with air entry 31 and be connected to air entry 31 two out
Port 32, two gas outlets 32 be connected tos with two air inlets 21 one-to-one correspondence, when air-breathing, opening and closing structure opening gas outlet 32, and gas
Body is entered in the cavity of cylinder by air entry 31, gas outlet 32, air inlet 21, completes air-breathing；Not when air-breathing, i.e., air-breathing is complete
At, opening and closing structure closes gas outlet 32, at this point, the gas into cylinder 20 can not back into lower flange 30, opening and closing knot
Structure can only enter gas, therefore no matter roller operates in the cavity of cylinder to which angle, or even in intermediate cavity
Volume maximum when, suction and discharge all the same side make the gas pressure in intermediate cavity be higher than pressure of inspiration(Pi), can complete each
The intracorporal compression of chamber is not in the problem of air-breathing flows back, and also be cannot be introduced into down even if the gas pressure in intermediate cavity is high again
In the cavity of flange, so that air-breathing be avoided to flow back, the loss of compressor is reduced, promotes the efficiency of compressor.In going out for lower flange
Opening and closing structure is set at port, on the one hand will not influence the structure of cylinder, and then will not influence compression efficiency, it is on the other hand convenient
Assembly improves assembly efficiency.The cavity of cylinder is separated into two independent working cavities by two slide plates, by an air-breathing
The gas of air-breathing is distributed to two independent working cavities and compressed by mouth 31, after compression, two independent working cavities
Compressed gas is discharged, reduces the energy loss of gas compression transmitting, the efficiency of compressor can be obviously improved.
In the present embodiment, pump assembly is one stage of compression structure.Certainly, which is equally applicable to twin-stage or more
In grade pressure texture, it is not limited to fixed frequency, frequency conversion or displacement-variable device, generality, replicability are high.
In the present embodiment, as depicted in figs. 1 and 2, opening and closing structure is elastic valve plate 60, and the first end of elastic valve plate 60 is solid
It is scheduled on lower flange 30, the second end of elastic valve plate 60 is free end and closes gas outlet 32.When air-breathing, in the work of pressure of inspiration(Pi)
Under, the second end of elastic valve plate 60 is up pushed, gas outlet 32 is opened and carries out air-breathing, after the completion of air-breathing, in the cavity of cylinder
Under interior gas pressure effect, elastic valve plate 60 moves down closes gas outlet and is close to gas outlet.The structure of elastic valve plate 60
Simply, easy to use.
In the present embodiment, the surface towards cylinder 20 of lower flange 30 is equipped with installation groove, and elastic valve plate 60 is installed
In installation groove, installation groove facilitates installation elastic valve plate, and then guarantees the sealing performance between flange and cylinder.
In the present embodiment, the first end of elastic valve plate 60 is fixed on lower flange 30 by fastener, when assembly, first will
Elastic valve plate 60 is fixed on lower flange, then flange and cylinder are assembled, and convenient for assembly, improves assembly efficiency.Specifically,
Fastener is screw 70, and screw is easy to use, low in cost.
In the present embodiment, cylinder 20 towards the evacuation groove 24 on the surface of lower flange 30 with evacuation fastener,
The lower surface of the head of screw and cylinder that avoid screw interferes.
In the present embodiment, as shown in Figure 2 and Figure 6, the surface of the separate cylinder 20 of lower flange 30 is equipped with groove 33, pump
Body component further includes the cover board 50 for blocking groove 33, and groove 33 is connected to 31, two gas outlets 32 of air entry.Air entry 31 is used
In sucking gas, groove 33 can store the gas of sucking, gas outlet 32 by gas transport into cylinder, lower flange 30
After gas transport inlet casing 20, two independent cavitys, which synchronize, to be started to compress, through two gas vents by upper flange 10 after compression
Discharge, completes whole compression process.Groove 33 facilitates processing and manufacturing in technique, reduces difficulty of processing.Specifically, groove 33
Substantially in a ring, the lateral wall of groove includes the multiple arcs wall section and multiple planomural sections that curvature is different and bending direction is different,
The inner sidewall of groove is rounded.
In the present embodiment, as shown in Figure 1, the radially extending along lower flange 30 of air entry 31, manufacture easy to process, also just
It is connect in air intake duct.In the present embodiment, as shown in Fig. 2, gas outlet 32 facilitates processing along the axially extending of lower flange 30,
Reduce processing cost.
In the present embodiment, as shown in figure 4, air inlet 21 be arranged in cylinder 20 towards on the surface of lower flange 30
Air inlet groove, simple processing.Specifically, the opposite two sidewalls of air inlet groove are arranged in parallel.
In the present embodiment, the groove depth ecto-entad of air inlet groove is gradually increased, so that air inlet is more smooth.
In the present embodiment, the angle of the center line of two sliding vane grooves is 180 degree, and two working cavities are symmetrically set at this time
It sets.
As interchangeable embodiment, groove is arc groove.
As interchangeable embodiment, air entry and a gas outlet are connected to by the first air intake passage, air entry and
Another gas outlet is connected to by the second air intake passage.
The present invention also provides a kind of compressor, compressor includes pump assembly, and pump assembly is above-mentioned pump assembly.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
The cavity of cylinder is separated into two independent working cavities by two slide plates, a suction is set on lower flange
Port, groove and two gas outlets, an air entry suck after gas through two air inlets point on two gas outlets, cylinder
Two working cavities of dispensing are compressed, and are compressed latter two independent working cavity for compressed gas and are passed through respective exhaust
Mouth discharge, because the revolving speed of crankshaft is relatively high, the interval time of two working cavities is very short, it will be appreciated that for realization while air-breathing and together
When be vented, reduce gas compression processes in energy loss, lift gas decrement, so promoted compressor refrigerating capacity, can
It is obviously improved the efficiency and performance of compressor；And opening and closing structure is set at gas outlet, structure is simpler, and technique can be realized,
Avoid air-breathing from flowing back, improve assembly efficiency, also will not influence compression efficiency, can on the basis of miniaturization popularity.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of pump assembly, comprising: upper flange (10), cylinder (20) and the lower flange (30) set gradually from top to bottom, institute
Cylinder (20) tool is stated there are two exhaust outlet (22) and two sliding vane grooves (23), slide plate is equipped in each sliding vane groove (23), often
First side of a sliding vane groove (23) be equipped with an exhaust outlet (22), the upper flange (10) be equipped with described in two
Exhaust outlet (22) corresponds two gas vents (11) of connection,
It is characterized in that,
The cylinder (20) also has there are two air inlet (21), and opposite with first side the of each sliding vane groove (23)
Two sides are equipped with an air inlet (21),
Two gas outlets (32) that the lower flange (30) is equipped with air entry (31) and is connected to the air entry (31), two
The gas outlet (32) corresponds with two air inlets (21) and is connected to, and opening and closing structure is equipped at the gas outlet (32),
The opening and closing structure closes the gas outlet when opening the opening state and non-air-breathing of the gas outlet (32) when having air-breathing
(32) closed state.
2. pump assembly according to claim 1, which is characterized in that the opening and closing structure is elastic valve plate (60), described
The first end of elastic valve plate (60) is fixed on the lower flange (30), the second end of the elastic valve plate (60) be free end simultaneously
Close the gas outlet (32).
3. pump assembly according to claim 2, which is characterized in that the lower flange (30) towards the cylinder (20)
Surface be equipped with installation groove, the elastic valve plate (60) is mounted in the installation groove.
4. pump assembly according to claim 2, which is characterized in that the first end of the elastic valve plate (60) passes through fastening
Part is fixed on the lower flange (30).
5. pump assembly according to claim 4, which is characterized in that the cylinder (20) towards the lower flange (30)
Surface on there is the evacuation groove (24) for avoiding the fastener.
6. pump assembly according to claim 1, which is characterized in that separate the cylinder (20) of the lower flange (30)
Surface be equipped with groove (33), the pump assembly further includes the cover board (50) for blocking the groove (33), the groove
(33) it is connected to the air entry (31), two gas outlets (32).
7. pump assembly according to claim 6, which is characterized in that the air entry (31) is along the lower flange (30)
It radially extends, and/or, the gas outlet (32) is along the axially extending of the lower flange (30).
8. pump assembly according to claim 1, which is characterized in that the air inlet (21) is to be arranged in the cylinder
(20) the air inlet groove on the surface towards the lower flange (30).
9. pump assembly according to claim 8, which is characterized in that the groove depth ecto-entad of the air inlet groove gradually increases
Greatly, and/or, the opposite two sidewalls of the air inlet groove are arranged in parallel.
10. a kind of compressor, including pump assembly, which is characterized in that the pump assembly is any one of claims 1 to 9
The pump assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973462.XA CN108999781A (en) | 2018-08-24 | 2018-08-24 | Pump assembly and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973462.XA CN108999781A (en) | 2018-08-24 | 2018-08-24 | Pump assembly and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108999781A true CN108999781A (en) | 2018-12-14 |
Family
ID=64593880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810973462.XA Pending CN108999781A (en) | 2018-08-24 | 2018-08-24 | Pump assembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999781A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3568712A (en) * | 1969-04-01 | 1971-03-09 | Gen Electric | Suction valve for rotary compressor |
| CN102597523A (en) * | 2010-07-08 | 2012-07-18 | 松下电器产业株式会社 | Rotary compressor and refrigeration cycle device |
| CN104214099A (en) * | 2013-06-04 | 2014-12-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor compressor pump body structure and air conditioner |
| EP3059447A1 (en) * | 2013-09-30 | 2016-08-24 | Guangdong Meizhi Compressor Co., Ltd. | Refrigerant filling type rotary compressor |
| CN106837790A (en) * | 2017-01-05 | 2017-06-13 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotary compressor, refrigeration system and temperature equipment |
| CN208763897U (en) * | 2018-08-24 | 2019-04-19 | 珠海凌达压缩机有限公司 | Pump assembly and compressor |
-
2018
- 2018-08-24 CN CN201810973462.XA patent/CN108999781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3568712A (en) * | 1969-04-01 | 1971-03-09 | Gen Electric | Suction valve for rotary compressor |
| CN102597523A (en) * | 2010-07-08 | 2012-07-18 | 松下电器产业株式会社 | Rotary compressor and refrigeration cycle device |
| CN104214099A (en) * | 2013-06-04 | 2014-12-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor compressor pump body structure and air conditioner |
| EP3059447A1 (en) * | 2013-09-30 | 2016-08-24 | Guangdong Meizhi Compressor Co., Ltd. | Refrigerant filling type rotary compressor |
| CN106837790A (en) * | 2017-01-05 | 2017-06-13 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotary compressor, refrigeration system and temperature equipment |
| CN208763897U (en) * | 2018-08-24 | 2019-04-19 | 珠海凌达压缩机有限公司 | Pump assembly and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208763897U (en) | Pump assembly and compressor | |
| CN104728079B (en) | Compressor and its vent silencer | |
| WO2019024562A1 (en) | Compressor and refrigeration apparatus having same | |
| CN110360111A (en) | Cylinder, pump assembly, compressor and air conditioner | |
| KR101362790B1 (en) | Vacuum Pump and Vane-Rotor for Vacuum Pump | |
| EP1199473A3 (en) | Scroll fluid machine | |
| CN108999781A (en) | Pump assembly and compressor | |
| CN113638883A (en) | Pump body subassembly, compressor and air conditioner | |
| CN109058106A (en) | Pump assembly, compressor and two temperature air-conditioning system | |
| CN110905808A (en) | Pump body assembly, fluid machine and heat exchange equipment | |
| US6638042B1 (en) | Asymmetric porting for multi-rotor screw compressor | |
| US6390792B1 (en) | Venting passage for isolation block of scroll compressor and check valve for the same | |
| CN105909498A (en) | Two-stage stroke type rotary compressor | |
| CN212155150U (en) | Two-stage rotary compressor | |
| CN213540663U (en) | Miniature vacuum air pump | |
| CN108825502A (en) | A kind of twin-tub double-stage compressor and refrigeration system | |
| CN208734545U (en) | Pump assembly and rotary compressor with it | |
| WO2021128905A1 (en) | Pump body assembly and variable capacity compressor | |
| CN209469583U (en) | Compressor | |
| CN216278509U (en) | Compressor and air conditioner with same | |
| CN216518626U (en) | Pump body subassembly, compressor, air conditioner | |
| EP1293670A3 (en) | Compressor head with improved oil retention | |
| CN217354745U (en) | Rear suction rotary vane type automobile air conditioner compressor | |
| CN205401040U (en) | Minipump and combination formula minipump | |
| CN219197592U (en) | Miniature vacuum air pump |
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 |