CN110131166A - Novel variable-capacity compressor - Google Patents
Novel variable-capacity compressor Download PDFInfo
- Publication number
- CN110131166A CN110131166A CN201910541693.8A CN201910541693A CN110131166A CN 110131166 A CN110131166 A CN 110131166A CN 201910541693 A CN201910541693 A CN 201910541693A CN 110131166 A CN110131166 A CN 110131166A
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- pressure gas
- opening
- locking structure
- low
- cylinder
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- 238000004378 air conditioning Methods 0.000 claims abstract description 28
- 238000005192 partition Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000008141 laxative Substances 0.000 claims 1
- 230000002475 laxative effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Classifications
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- 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
-
- 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a novel variable-capacity compressor, which comprises an upper flange, an upper cylinder, a partition plate, a lower cylinder, a lower flange and a lower flange cover, wherein the upper flange is arranged on the upper cylinder; a lower sliding sheet is arranged in the lower cylinder; the variable-capacity mechanism is arranged on the lower flange and comprises a locking structure and a three-way reversing valve; low-pressure gas is introduced into the bottom of the locking structure, and the top of the locking structure can be communicated with the lower sliding sheet; when the three-way reversing valve introduces low-pressure gas to the top of the locking structure, the locking structure moves upwards to fix the lower sliding sheet; when the three-way reversing valve introduces high-pressure gas to the top of the locking structure, the locking structure moves downwards to unlock the lower sliding sheet. The three-way reversing valve is designed in the pump body assembly, the on-off of the three-way reversing valve is controlled by the air-conditioning system controller, the variable-volume switching of the compressor pump body is realized, a variable-volume control interface and a corresponding air-conditioning system pipeline do not need to be newly arranged, the air-conditioning system is greatly simplified, the variable-volume control liquid separator of the compressor and the connecting pipe of the air-conditioning system are saved, the cost of the compressor and the air-conditioning system is greatly reduced, and the resonance is reduced due to the optimization of the system pipeline, so that the noise value is reduced.
Description
Technical field
The invention mainly relates to compressor field, in particular to a kind of positive displacement compressor.
Background technique
By taking the duplex cylinder compressor of roller type as an example, upper cylinder and lower gas are typically provided in existing routine positive displacement compressor shell
Cylinder, upper and lower cylinder are respectively provided with air entry and exhaust outlet, and upper cylinder is as Chang Yunqi cylinder, and lower cylinder is as variable capacity cylinder.When
When lower cylinder unloads, compressor is switched to single cylinder mode, and instantly when cylinder load, compressor is switched to twin-tub mode.
Pin of the existing routine positive displacement compressor by being placed in lower flange pin hole passes through the slide plate in sliding vane groove
The gas of access different pressures forms pressure difference or balance pressure reaches pin to the locking and unlocking of slide plate.And this scheme is to rely on
Air-conditioning system introduction pipeline realizes the switching to compressor transfiguration, not only needs to become in the external control of compressor exterior design
The dispenser of appearance improves the cost of compressor, so that the pipeline of air-conditioning system is complicated, when compressor start operates
When, the resonance of air-conditioning system pipeline is easily caused, so that level of noise improves, and the increase of air-conditioning system pipeline (copper pipe), is also made
The cost for obtaining air-conditioning improves.
Summary of the invention
The technical problem to be solved in the present invention are as follows: the transfiguration switching of cylinder how is realized inside compressor.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of novel positive displacement compressor, including upper flange, upper cylinder, partition, lower cylinder, lower flange, lower flange lid；It is described
Lower slide plate is set in lower cylinder；It is characterized by also including displacement-variable device, the displacement-variable device is arranged on the lower flange,
Including locking structure and three-way diverter valve；The bottom of the locking structure is passed through low-pressure gas, and top can be connected to the lower slide plate；
When the three-way diverter valve introduces low-pressure gas to the top of the locking structure, the locking structure is transported upwards
The dynamic fixed lower slide plate；When the three-way diverter valve introduces high pressure gas to the top of the locking structure, the locking
Downward movement unlocks the lower slide plate.
Further, the three-way diverter valve includes the first opening, the second opening and third opening；First opening connects
Enter low-pressure gas, the second opening access high pressure gas, the third opening leads to the top of the locking structure.
Further, holding tank is set on the lower flange, and the three-way diverter valve is arranged in the holding tank.
Further, pressure hole laterally is opened up in the lower flange, the high pressure gas in compression case is led to described
Second opening.
Further, low pressure hole is opened up from the air entry of lower cylinder, low-pressure gas is introduced into first opening.
Further, fixed magnetic part and movable metallic is respectively set in the port of the first opening and the second opening
Part；When the movable metallic part no power, the movable metallic part is bonded with the fixed magnetic part, and the port is without gas
It is passed through；When the movable metallic part is powered, the movable metallic part is separated with the fixed magnetic part, and there is gas in the port
Pass through.
Further, the movable metallic part is piston plectrum or spring catch.
Further, the locking structure is pin and is arranged in the spring of the pin bottom, the pin and described
Spring is arranged in pin hole, and the pin hole is arranged in the lower flange；The sliding block is equipped with lock groove, the locking
Slot is connected at the top of the pin hole.
Further, setting low pressure gas port is covered in the lower flange and the lower flange, the low-pressure gas is logical
The one end in road is connected to the low pressure hole of the lower cylinder, and the low pressure gas port is connected to described first in the lower flange lid and opens
The bottom of mouth and the pin hole；Low-pressure gas introduces first by the low pressure gas port from the air entry of the lower cylinder
Opening and the pin hole bottom.
Further, the three-way diverter valve is connected to air conditioning system controller by solenoid valve control, the solenoid valve；Work as institute
When stating air conditioning system controller sending single cylinder instruction, solenoid valve instruction second opening is closed, and described first, which is open, beats
It opens, low-pressure gas enters the top of the pin hole；When the air conditioning system controller issues twin-tub instruction, the solenoid valve
Second opening is instructed to open, first opening is closed, and high pressure gas enters the top of the pin hole.
The invention has the benefit that
The present invention newly designs the positive displacement compressor for having three-way diverter valve, passes through the triplet commutation designed in pump assembly
Valve and completely new gas flow path change the switch of port valve by air conditioning system controller control three-dimensional, realize compressor pump itself
Transfiguration switching, no longer need to newly set transfiguration control interface and corresponding air-conditioning system pipeline, enormously simplify air-conditioning system, and
Also save compressor transfiguration control dispenser and air-conditioning system connecting tube, significantly reduce compressor and air-conditioning system at
This, also due to the optimization of system pipeline, reduces resonance, so that level of noise also decreases.
Detailed description of the invention
Fig. 1 is compressor inner structure schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of three-way diverter valve of the invention (including piston plectrum)；
Fig. 3 is the structural schematic diagram of three-way diverter valve of the invention (including spring catch)；
Wherein: 1, upper flange；2, upper cylinder；3, partition；4, lower cylinder；5, lower flange；6, lower flange lid；7, crankshaft；8-
1, lower slide plate；8-2；Lower roller；9, three-way diverter valve；9-1 first is open；9-2 second is open；9-3 third opening；9-4, electromagnetism
Valve；9-5 electrical control lines；9-6 fixed magnetic part；9-7, piston plectrum；9-8, spring catch；10, pin hole；11, pin；12, spring.
Specific embodiment
The method realized with reference to the accompanying drawings and detailed description to preferred mechanism of the invention and movement is done into one
The explanation of step.
A kind of novel transfiguration pressure texture, mainly include upper flange 1, upper cylinder 2, partition 3, lower cylinder 4, lower flange 5, under
Blind flange 6, crankshaft 7, lower slide plate 8-1, lower roller 8-2 and displacement-variable device.
Upper bearing (metal) of the upper flange 1 as entire pump assembly, connect with upper cylinder 2, to complete the pressure of upper cylinder 2
Contracting；Upper cylinder 2 is used as Chang Yunqi cylinder, is arranged on partition 3；Partition 3 is used as cavity type structure, its purpose is that increasing exhaust
Area reduces exhaust resistance；Lower cylinder 4 be used as compression square-cavity, be realize gas compression, capacity-variable structure (whether unloading) it is main
Original part is located under partition 3, on lower flange 5；Lower flange 5 is located under lower cylinder 4, mainly to accommodate cylinder compression
Gas, and the lower flange cover board 6 under lower flange 5 avoids high pressure gas direct then as the sealing element for sealing 5 cavity of lower flange
It is drained into oil sump；Base bearing of the crankshaft 7 as entire pump assembly is that pump housing fortune is realized in connection power resources (rotor)
The main component turned；Component of the lower roller 8-2 as compressed gas, after being assembled with crankshaft 7, always in the intracavitary progress of lower cylinder 4
Circular motion.
Displacement-variable device is arranged on lower flange, including locking structure and three-way diverter valve.
Lower cylinder 4 and lower flange 5 are tightly connected, and lower flange 5 and lower flange lid 6 are tightly connected；Lower cylinder 4 is provided with downslide
Lock groove is set on piece 8-1, lower slide plate 8-1, and lower slide plate 8-1 and lower roller 8-2 cooperate, and carry out gas compression；The axis of lower flange 5
Pin hole 10 is set up to side, the top of pin hole 10 is connected to the lock groove of lower slide plate 8-1, and bottom and lower flange lid 6 connect
It is logical；Locking structure is arranged in pin hole 10, including pin 11 and matched spring 12.Due at the top and bottom of pin hole
Mutually isolated, gas is not connected to, so up and down motion of the pin 11 in pin hole 10, is by the top and bottom of pin hole 10
Pressure balance or pressure difference realize.
When single cylinder mode, the gas pressure at 10 top of pin hole is equal to the gas pressure of bottom, pressure balance, in spring force
Under the action of, pin 11 stretches out pin hole 10 and enters lock groove, and lower slide plate 8-1 is fixed in sliding vane groove, and lower cylinder 4 is in and unloads
Load state.
When twin-tub mode, the gas pressure at 10 top of pin hole is greater than the sum of 12 power of gas pressure and spring of bottom, pressure
Power difference is formed, and pin 11 retracts in pin hole 10, and lower slide plate 8-1 unlock, lower cylinder 4 is in load condition and carries out compressed gas
Work.
One holding tank is set in jag in lower flange, a three-way diverter valve 9, three-way diverter valve 9 are set in holding tank
First opening 9-1 access low-pressure gas, second opening 9-2 access high pressure gas, third be open 9-3 connection pin hole 10 top
Portion.
Laterally opening up a pressure hole high pressure gas in compression case led to the second of three-way diverter valve 9 in lower flange
Be open 9-2, accesses high pressure gas for three-way diverter valve 9.
A low pressure hole is opened up from lower cylinder air entry, introduces low-pressure gas, and in corresponding lower flange 5, lower flange lid
Low pressure gas port is set on plate 6, the low pressure gas port on lower flange cover board bottom with pin hole and holding tank simultaneously
In three-way diverter valve 9 first opening 9-1 connection.I.e. the low-pressure gas of air entry is entered by the drainage of gas passage
In the slot of lower flange cover board 6, while low-pressure gas is introduced for three-way diverter valve 5 and 10 bottom of pin hole.
Three-way diverter valve 9 is by a solenoid valve control, since three-way diverter valve 9 is disposed upon the pump assembly of compressor inner cavity
Interior, matched electromagnetism part leads to hull outside, the electrical control lines 9-5 of electromagnetism part and air-conditioning system control by electrical control lines 9-5
Device connection processed, control of the solenoid valve 9-4 to three-way diverter valve 9 is controlled by air conditioning system controller.In three-way diverter valve 9
Fixed magnetic part 9-6 and piston plectrum 9-7 is respectively set in the port position of first opening 9-1 and the second opening 9-2, works as piston
When plectrum 9-7 no power, by magneticaction, piston plectrum 9-7 is bonded with fixed magnetic part 9-6, and no gas is passed through；Work as piston
When plectrum 9-7 is powered, piston plectrum 9-7 is separated with fixed magnetic part 9-6, has gas to pass through.Solenoid valve 9-4 receives air-conditioning system
After the signal feedback of controller, can the piston plectrum 9-7 of two ports be powered and be powered off respectively by electrical control lines 9-5,
To realize the combination or separate of piston plectrum 9-7 and fixed magnetic part 9-6, to also determine whether high-low pressure gas leads to
It crosses.
The piston plectrum 9-7 of above-mentioned three-way diverter valve can also change spring catch 9-8 into, and other parts are all the same.
The course of work:
In the initial state, three-way diverter valve 9 is to close in the state of initial；When compressor starts operating, threeway
The both ends of reversal valve 9 start to be passed through high and low pressure gas, when air conditioning system controller needs to switch transfiguration cylinder according to running frequency
When, electromagnetism 9-4 receives the signal of air conditioning system controller, is open the opening of 9-1 and second 9-2's to the first of three-way diverter valve 9
Issue electric signal in port:
1, air conditioning system controller instruction is single cylinder mode: closing the piston plectrum 9-7 of high pressure gas port, opens low pressure
The piston plectrum 9-7 of gas ports, low-pressure gas enter 10 top of pin hole, pin by the third opening 9-3 of three-way diverter valve 9
The pressure balance of 10 top and bottom of nail hole, lower slide plate 8-1 locking, the operation of 4 unloaded state of lower cylinder, i.e. compressor single cylinder；
2, air conditioning system controller instruction is twin-tub mode: closing the piston plectrum 9-7 of low-pressure gas port, opens high pressure
The piston plectrum 9-7 of gas ports, high pressure gas enter 10 top of pin hole, pressure by the third opening 9-3 of three-way diverter valve 9
Difference is established, lower slide plate 8-1 unlock, the operation of 4 load condition of lower cylinder, i.e. compressor parallel bars.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, but it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of novel positive displacement compressor, including upper flange, upper cylinder, partition, lower cylinder, lower flange, lower flange lid；Under described
Lower slide plate is set in cylinder；It is characterized by also including displacement-variable device, the displacement-variable device is arranged on the lower flange, packet
Include locking structure and three-way diverter valve；The bottom of the locking structure is passed through low-pressure gas, and top can be connected to the lower slide plate；
When the three-way diverter valve introduces low-pressure gas to the top of the locking structure, the locking structure moves upwards solid
The fixed lower slide plate；When the three-way diverter valve introduces high pressure gas to the top of the locking structure, the locking structure
Move downward the unlock lower slide plate.
2. novel positive displacement compressor according to claim 1, it is characterised in that: the three-way diverter valve is opened including first
Mouth, the second opening and third opening；The first opening access low-pressure gas, the second opening access high pressure gas are described
Third, which is open, leads to the top of the locking structure.
3. novel positive displacement compressor according to claim 2, it is characterised in that: holding tank, institute are arranged on the lower flange
Three-way diverter valve is stated to be arranged in the holding tank.
4. novel positive displacement compressor according to claim 2, it is characterised in that: laterally open up high pressure in the lower flange
High pressure gas in compression case is led to second opening by hole.
5. novel positive displacement compressor according to claim 3 or 4, it is characterised in that: opened up from the air entry of lower cylinder
Low-pressure gas is introduced first opening by low pressure hole.
6. novel positive displacement compressor according to claim 5, it is characterised in that: the end of the first opening and the second opening
Fixed magnetic part and movable metallic part is respectively set in mouth；When the movable metallic part no power, the movable metallic part with
The fixed magnetic part fitting, the port is passed through without gas；When the movable metallic part be powered when, the movable metallic part with
The fixed magnetic part separation, the port has gas to pass through.
7. novel positive displacement compressor according to claim 6, it is characterised in that: the movable metallic part be piston plectrum or
Person's spring catch.
8. novel positive displacement compressor according to claim 7, it is characterised in that: the locking structure is that pin and setting exist
The spring of the pin bottom, the pin and the spring are arranged in pin hole, and the pin hole is arranged in the laxative remedy
Lan Zhong；The sliding block is equipped with lock groove, and the lock groove is connected at the top of the pin hole.
9. novel positive displacement compressor according to claim 8, it is characterised in that: in the lower flange and the lower flange lid
Upper setting low pressure gas port, one end of the low pressure gas port are connected to the low pressure hole of the lower cylinder, the low-pressure gas
Channel is connected to the bottom of first opening and the pin hole in the lower flange lid；Low-pressure gas is from the lower cylinder
Air entry introduces the first opening and the pin hole bottom by the low pressure gas port.
10. novel positive displacement compressor according to claim 9, it is characterised in that: the three-way diverter valve is by solenoid valve control
System, the solenoid valve are connected to air conditioning system controller；When the air conditioning system controller issues single cylinder instruction, the solenoid valve
Second opening is instructed to close, first opening is opened, and low-pressure gas enters the top of the pin hole；When the air-conditioning
When system controller issues twin-tub instruction, solenoid valve instruction second opening is opened, and first opening is closed, high pressure
Gas enters the top of the pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910541693.8A CN110131166A (en) | 2019-06-20 | 2019-06-20 | Novel variable-capacity compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910541693.8A CN110131166A (en) | 2019-06-20 | 2019-06-20 | Novel variable-capacity compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110131166A true CN110131166A (en) | 2019-08-16 |
Family
ID=67578939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910541693.8A Pending CN110131166A (en) | 2019-06-20 | 2019-06-20 | Novel variable-capacity compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110131166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128905A1 (en) * | 2019-12-26 | 2021-07-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body assembly and variable capacity compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090125645A (en) * | 2008-06-02 | 2009-12-07 | 엘지전자 주식회사 | Variable capacity type rotary compressor |
| CN102132046A (en) * | 2008-08-29 | 2011-07-20 | 东芝开利株式会社 | Enclosed compressor, two-cylinder rotary compressor, and refrigerating cycle apparatus |
| CN103867441A (en) * | 2014-03-19 | 2014-06-18 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN106593869A (en) * | 2015-10-16 | 2017-04-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage variable-capacity compressor and air conditioning system provided with same |
| CN210265125U (en) * | 2019-06-20 | 2020-04-07 | 珠海凌达压缩机有限公司 | Novel variable-capacity compressor |
-
2019
- 2019-06-20 CN CN201910541693.8A patent/CN110131166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090125645A (en) * | 2008-06-02 | 2009-12-07 | 엘지전자 주식회사 | Variable capacity type rotary compressor |
| CN102132046A (en) * | 2008-08-29 | 2011-07-20 | 东芝开利株式会社 | Enclosed compressor, two-cylinder rotary compressor, and refrigerating cycle apparatus |
| CN103867441A (en) * | 2014-03-19 | 2014-06-18 | 安徽美芝精密制造有限公司 | Double-stage compressor |
| CN106593869A (en) * | 2015-10-16 | 2017-04-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage variable-capacity compressor and air conditioning system provided with same |
| CN210265125U (en) * | 2019-06-20 | 2020-04-07 | 珠海凌达压缩机有限公司 | Novel variable-capacity compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128905A1 (en) * | 2019-12-26 | 2021-07-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body assembly and variable capacity compressor |
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