CN102042227A - Birotor two-stage enthalpy-increasing compressor, air conditioner and heat pump water heater - Google Patents
Birotor two-stage enthalpy-increasing compressor, air conditioner and heat pump water heater Download PDFInfo
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- CN102042227A CN102042227A CN2009101798272A CN200910179827A CN102042227A CN 102042227 A CN102042227 A CN 102042227A CN 2009101798272 A CN2009101798272 A CN 2009101798272A CN 200910179827 A CN200910179827 A CN 200910179827A CN 102042227 A CN102042227 A CN 102042227A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 230000009467 reduction Effects 0.000 claims description 18
- 239000006200 vaporizer Substances 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000030279 gene silencing Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 15
- 238000004378 air conditioning Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005247 gettering Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention provides a double-rotor two-stage enthalpy-increasing compressor, which comprises: the device comprises an air suction pipe, a liquid separator, a shell air suction pipe, a lower flange, a lower cover plate, a compressor shell, an enthalpy increasing pipe, an enthalpy increasing capillary pipe, a low pressure cylinder, a lower roller, a middle plate, a high pressure cylinder, an upper roller, an upper flange, a crankshaft, a motor rotor, a motor stator and an exhaust pipe; the low-pressure cylinder and the lower roller therein are arranged on the lower flange; the lower cover plate is arranged at the bottom of the lower flange; the enthalpy increasing pipe is arranged in the lateral direction of the lower flange; and the silencing expansion cavity is arranged in the lower flange. The invention also provides an air conditioner and a heat pump water heater.
Description
Technical field
The present invention relates to refrigerating field, increase enthalpy compressor, air conditioner and heat pump water heater in particular to a kind of double rotor two-stage.
Background technique
HFC, HCFC refrigeration agent such as R22, R410A etc. under ultralow temperature since specific volume increase, the unit gettering quantity of compressor reduces, and causes the heating capacity of compressor to descend significantly, and because the reducing of the gettering quantity of refrigeration agent, specific discharge reduces, lubricated and cooling effect to the compressor inside pump housing and motor is not good, and the pressure ratio of the suction and discharge of compressor is also very big at low temperatures, and the delivery temperature of compressor is very high.
The inventor finds that there are the following problems at least in the prior art: the common duplex-cylinder rotary compressor under the above-mentioned condition increases enthalpy, must cause vibration of compressor bigger, causes the compressor performance instability, forms bigger leakage and frictional loss.
Summary of the invention
The present invention aims to provide a kind of double rotor two-stage and increases the enthalpy compressor, can solve that existing to increase the enthalpy vibration of compressor bigger, and unstable properties forms problems such as bigger leakage and frictional loss easily.
The invention provides a kind of double rotor two-stage and increase the enthalpy compressor, comprise: sucking pipe, liquor separator, housing sucking pipe, lower flange, lower cover plate, increase enthalpy pipe, low pressure (LP) cylinder, lower roller, intermediate plate, high-pressure cylinder, go up roller, upper flange, bent axle, rotor, motor stator, outlet pipe, compressor housing;
Low pressure (LP) cylinder and interior lower roller thereof are located on the lower flange; Lower cover plate is arranged on the lower flange bottom;
Increase the enthalpy pipe and be arranged on the lower flange side direction; Compressor also comprises the noise reduction expansion cavity, and the noise reduction expansion cavity is arranged in the lower flange.
Preferably, also be provided with suction port in the lower flange side direction, suction port is connected with the housing sucking pipe.
Preferably, increase the enthalpy pipe and be welded on the lower flange side direction.
Preferably, be provided with the interior bone that is communicated with suction port and low pressure (LP) cylinder in the lower flange.
Preferably, interior bone is an inclined hole.
Preferably, increase the enthalpy pipe and also comprise and increase the enthalpy capillary tube, increase the enthalpy capillary tube and be socketed on and increase in the enthalpy pipe.
Preferably, increase the enthalpy pipe and be welded on the lower flange side direction.
Preferably, the noise reduction expansion cavity comprises noise reduction expansion the branchs chamber that a plurality of sectional areas of interconnecting are different, the different noise reduction of a plurality of sectional areas expand the branch chamber be opened on the lower flange respectively with lower flange on a plurality of screw hole round platforms and the cavity that surrounds of lower flange crankshaft hole round platform.
Preferably, sucking pipe is connected with vaporizer, and outlet pipe is connected with condenser, increases the enthalpy capillary tube and is connected with flash vessel, and compressor is arranged in the air-conditioning refrigeration system, and compressor also comprises wiring terminal, and wiring terminal links to each other with the air-conditioning refrigeration system power supply.
The present invention also provides a kind of air conditioner, and it comprises the compressor of front, and sucking pipe is connected with the vaporizer of air conditioner, and outlet pipe is connected with the condenser of air conditioner, increases the enthalpy pipe and is communicated with the flash vessel of air conditioner.
The present invention also provides a kind of heat pump water heater, and it comprises the compressor of front, and sucking pipe is connected with the vaporizer of heat pump water heater, and outlet pipe is connected with the condenser of heat pump water heater, increases the enthalpy pipe and is communicated with the flash vessel of heat pump water heater.
Because lower flange adopts the noise reduction expansion cavity, and increase the enthalpy pipe and be arranged on the lower flange side direction,, improved the overall performance of compressor so reduced the noise of gas preferably.In addition,, reduced the various leakages and the mechanical friction loss of compressor preferably, improved the heating capacity of compressor because the suction port of compressor on lower flange, can make the thinner of low high cylinder height design.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the sectional structure that increases the enthalpy compressor according to the double rotor two-stage of the embodiment of the invention;
Fig. 2 has schematically shown the flow process that increases refrigerant in the enthalpy compressor according to the double rotor two-stage of the embodiment of the invention;
Fig. 3 has schematically shown the structure that increases the lower flange of enthalpy compressor according to the double rotor two-stage of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 to Fig. 3 has schematically shown the structure that increases the enthalpy compressor according to the double rotor two-stage of the embodiment of the invention.As shown in the figure, double rotor two-stage according to the embodiment of the invention increases enthalpy compressor 18, comprising: sucking pipe 1, liquor separator 2, housing sucking pipe 3, lower flange 4, lower cover plate 5, compressor housing 6, increase enthalpy pipe 7, increase enthalpy capillary tube 8, low pressure (LP) cylinder 9, lower roller 10, intermediate plate 11, high-pressure cylinder 12, go up roller 13, upper flange 14, bent axle 15, rotor 16, motor stator 17, outlet pipe 20.
Low pressure (LP) cylinder 9 and interior lower roller 10 thereof are located at lower flange 4 tops; Lower cover plate 5 is arranged on lower flange 4 bottoms.
Suction port 41 is arranged on lower flange 4 side direction, and suction port 41 is connected with housing sucking pipe 3; Noise reduction expansion cavity 43 is arranged in the lower flange 4; Increase enthalpy pipe 7, be arranged on lower flange 4 side direction,, and adopt, improve the efficient and the reliability of compressor from the lower flange air inlet so the two-stage of the embodiment of the invention increases the form that enthalpy compressor 18 does not adopt cylinder intake.The two-stage of the embodiment of the invention increases in the enthalpy compressor 18 and has replaced baffler with noise reduction expansion cavity 43, refrigerant enters noise reduction expansion cavity 43 by suction port 3, eliminate the noise by the different noise reduction expansion branch chamber 42,44,46,47,49 of sectional area successively, enter intermediate plate 11 by relief opening 48 at last, reduced the noise of gas preferably, improve the overall performance of compressor, and simplified the structure of compressor, simplified the installation of compressor inner member.Other structures that increase enthalpy compressor 18 about two-stage are same as the prior art substantially, and something in common repeats no more.
Preferably, increase enthalpy pipe 7 and be welded on lower flange 4 side direction.Like this, increasing enthalpy pipe 7 is provided with more stable.
Preferably, be provided with the interior bone 45 that is communicated with suction port 41 and low pressure (LP) cylinder 9 in the lower flange 4.Interior bone 45 can be inclined hole, on low pressure (LP) cylinder 9 (being lower cylinder), do not adopt the form of intermediate connection tube transmission refrigerant, but directly carry out the transmission of refrigerant by intermediate hole, simplified the structure of compressor, installation and the mismatch error and the consequent vibration of compressor inner member lacked in letter.
Preferably, sucking pipe 1 is connected with vaporizer 40, and outlet pipe 20 is connected with condenser, increases enthalpy capillary tube 8 and is connected with flash vessel 50.
In an embodiment of the present invention, also provide a kind of air conditioner, comprised the compressor 18 of front, sucking pipe 1 is connected with vaporizer 40, outlet pipe 20 is connected with condenser 30, increases enthalpy capillary tube 8 and is connected with flash vessel 50, and compressor 18 links to each other with the air-conditioning refrigeration system power supply by wiring terminal 19.
In an embodiment of the present invention, also provide a kind of heat pump water heater, comprised the compressor 18 of front, sucking pipe 1 is connected with vaporizer 40, outlet pipe 20 is connected with condenser, increases enthalpy capillary tube 8 and is connected with flash vessel 50, and compressor 18 links to each other with the air-conditioning refrigeration system power supply by wiring terminal 19.
The two-stage that specifically describes the embodiment of the invention below increases the concrete working procedure of enthalpy compressor 18.
As shown in Figure 1, compressor 18 links to each other with the air-conditioning refrigeration system power supply by wiring terminal 19, after the air-conditioning energising, induction machine stator 17 drives eccentric crankshaft 15 high speed rotating with rotor 16 by the electromagnetic induction effect, refrigerant enters liquor separator 2 enters duplex cylinder compressor 18 again from housing sucking pipe 3 lower flange 4 from sucking pipe 1 under action of pressure, refrigerant directly enters low pressure (LP) cylinder 9 by the interior bone 45 (inclined hole) of lower flange 4, after being pressed onto certain intermediate pressure, enter the intakeport of high-pressure cylinder 12 by the pore of intermediate plate 11, in high-pressure cylinder 12, refrigerant is discharged by outlet pipe 20 through last compression back.
Bent axle 15 has the eccentric circle of two 180 degree symmetries, and roller 13 and lower roller 10 are housed on the eccentric circle up and down.Two roller high speed rotating compress the refrigerant in the upper and lower air cylinders (being the high low pressure cylinder) respectively simultaneously, under suitable operating mode, refrigerant is pressed onto intermediate pressure and enters in intermediate plate 11 pores in low pressure (LP) cylinder 9, liquid refrigerant becomes to introduce behind the refrigerant of gaseous state and increases enthalpy capillary tube 8 and increase enthalpy pipe 7 from air-conditioning system flash vessel 50, enter in the compressor pump at last and compress, improved the heating capacity of compressor preferably.
Another embodiment's compressor as shown in Figure 2, the suction port of compressor 41 and increase enthalpy pipe 7 and all be opened on the lower flange 4, under suitable operating mode, refrigerant is simultaneously from housing sucking pipe 3 with increase 8 air inlets simultaneously of enthalpy capillary tube.The refrigerant of vaporizer enters lower flange 4 from housing sucking pipe 3 under the effect of pressure reduction, enter on the intermediate plate 11 by the inclined hole that is opened on the lower flange 4, enter upper cylinder 12 by the vent on the intermediate plate 11 again, after compression for the second time, relief opening from upper flange 14 is discharged, flash vessel carries out complete flash distillation gasification to the refrigerant that is not gasified totally in the fractional distilling tube in addition, enter lower flange by increasing enthalpy capillary tube 8 and increasing enthalpy pipe 7, this design principle and structure have improved the heating capacity of compressor greatly, simultaneously since the sucking pipe of compressor on lower flange, can make the thinner of upper and lower air cylinders height design, reduce the various leakages and the mechanical friction loss of compressor preferably, improved the heating capacity of compressor.
The two-stage of the embodiment of the invention increases the design principle of the lower flange 4 of enthalpy compressor 18 in conjunction with the expanssion type attenuator, refrigerant enters noise reduction expansion cavity 43 by suction port 3, divide chamber 42 by the different noise reduction expansion of sectional area successively, 44,46,47,49 eliminate the noise, enter intermediate plate 11 by relief opening 48 at last, expansion cavity adopts the design of big loculus, the variation of utilization expansion cavity sectional area, design in conjunction with big roundlet breadth, absorb the energy of air-flow, thereby elimination pneumatic noise, design is in lower flange 4, adopt the structure of changes of section, can absorb and consume the energy of the noise of 500-2500Hz gas, and adopt 5 sealings of rigidity lower cover, reduce the noise of gas preferably, will increase the structure of 7 designs of enthalpy pipe and lower flange 4 close-fittings simultaneously, compressor suction duct is designed on lower flange, thus the overall performance of raising compressor.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
The present invention can significantly improve heating capacity and the reliability of rotary compressor under ultralow temperature, has simplified the internal structure of compressor, and installation and the mismatch error and the consequent vibration of compressor inner member lacked in letter.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a double rotor two-stage increases enthalpy compressor (18), comprising:
Sucking pipe (1), liquor separator (2), housing sucking pipe (3), lower flange (4), lower cover plate (5), compressor housing (6), increase enthalpy pipe (7), low pressure (LP) cylinder (9), lower roller (10), intermediate plate (11), high-pressure cylinder (12), go up roller (13), upper flange (14), bent axle (15), rotor (16), motor stator (17), outlet pipe (20);
Described low pressure (LP) cylinder (9) and interior described lower roller (10) thereof are located at described lower flange (4) top;
Described lower cover plate (5) is arranged on described lower flange (4) bottom;
It is characterized in that,
The described enthalpy pipe (7) that increases is arranged on described lower flange (4) side direction; Described compressor (18) also comprises noise reduction expansion cavity (43), and described noise reduction expansion cavity (43) is arranged in the described lower flange (4).
2. compressor according to claim 1 (18) is characterized in that,
Also be provided with suction port (41) in described lower flange (4) side direction, described suction port (41) is connected with described housing sucking pipe (3).
3. compressor according to claim 2 (18) is characterized in that,
Be provided with the interior bone (45) that is communicated with described suction port (41) and described low pressure (LP) cylinder (9) in the described lower flange (4).
4. compressor according to claim 3 (18) is characterized in that,
Described interior bone (45) is an inclined hole.
5. compressor according to claim 1 (18) is characterized in that,
The described enthalpy pipe (7) that increases also comprises and increases enthalpy capillary tube (8), increases enthalpy capillary tube (8) and is socketed on described increasing in the enthalpy pipe (7).
6. compressor according to claim 1 (18) is characterized in that,
The described enthalpy pipe (7) that increases is welded on described lower flange (4) side direction.
7. compressor according to claim 1 (18) is characterized in that,
Described noise reduction expansion cavity (43) comprises noise reduction expansion the branchs chamber that a plurality of sectional areas of interconnecting are different, the different noise reduction of described a plurality of sectional areas expand the branch chamber be opened on the lower flange respectively with described lower flange on a plurality of screw hole round platforms and the cavity that surrounds of lower flange crankshaft hole round platform.
8. compressor according to claim 1 (18) is characterized in that,
Described sucking pipe (1) is connected with vaporizer (40), and described outlet pipe (20) is connected with condenser, and the described enthalpy pipe (7) that increases is connected with flash vessel (50);
Described compressor (18) is arranged in the refrigeration system, and described compressor (18) also comprises wiring terminal (19), and described wiring terminal (19) links to each other with described refrigeration system power supply.
9. air conditioner, it is characterized in that, comprise each described compressor (18) of claim 1 to 8, described sucking pipe (1) is connected with the vaporizer (40) of described air conditioner, described outlet pipe (20) is connected with the condenser of described air conditioner, and the described enthalpy pipe (7) that increases is communicated with the flash vessel (50) of described air conditioner.
10. heat pump water heater, it is characterized in that, comprise each described compressor (18) of claim 1 to 8, described sucking pipe (1) is connected with the vaporizer (40) of described heat pump water heater, described outlet pipe (20) is connected with the condenser of described heat pump water heater, and the described enthalpy pipe (7) that increases is communicated with the flash vessel (50) of described heat pump water heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910179827.2A CN102042227B (en) | 2009-10-13 | 2009-10-13 | Birotor two-stage enthalpy-increasing compressor, air conditioner and heat pump water heater |
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| CN200910179827.2A CN102042227B (en) | 2009-10-13 | 2009-10-13 | Birotor two-stage enthalpy-increasing compressor, air conditioner and heat pump water heater |
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| CN102042227B CN102042227B (en) | 2014-04-16 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966544A (en) * | 2011-08-31 | 2013-03-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage enthalpy-increasing compressor |
| CN103147986A (en) * | 2011-12-07 | 2013-06-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Twin-stage enthalpy-increasing compressor, and air-conditioner and heat-pump water heater with the twin-stage enthalpy-increasing compressor |
| CN103291624A (en) * | 2012-02-22 | 2013-09-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Single two-stage totally sealed refrigeration compressor with external mixing chamber |
| CN103362807A (en) * | 2012-04-10 | 2013-10-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, air conditioning system with same and heat-pump water heater system |
| CN103671121A (en) * | 2012-09-26 | 2014-03-26 | 珠海格力电器股份有限公司 | Enthalpy-increasing pipe of rotary compressor, fixing assembly, compressor and enthalpy-increasing method |
| CN105443385A (en) * | 2014-05-27 | 2016-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage enthalpy-increase compressor and air conditioner |
| CN106168214A (en) * | 2016-06-29 | 2016-11-30 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of cylinder that turns increases enthalpy piston compressor and has its air conditioning system |
| CN106351844A (en) * | 2015-07-23 | 2017-01-25 | 重庆凌达压缩机有限公司 | Horizontal compressor and air inlet flange assembly thereof |
| CN108730181A (en) * | 2018-05-18 | 2018-11-02 | 珠海凌达压缩机有限公司 | Pump body structure and compressor with same |
| CN114576170A (en) * | 2022-03-10 | 2022-06-03 | 珠海凌达压缩机有限公司 | Lower flange structure for compressor and compressor with lower flange structure |
| CN114811984A (en) * | 2022-04-29 | 2022-07-29 | 珠海格力电器股份有限公司 | Compressor and compressor air conditioning system |
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| CN102966544B (en) * | 2011-08-31 | 2015-11-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Dual-level enthalpy adding compressor |
| CN102966544A (en) * | 2011-08-31 | 2013-03-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage enthalpy-increasing compressor |
| CN103147986A (en) * | 2011-12-07 | 2013-06-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Twin-stage enthalpy-increasing compressor, and air-conditioner and heat-pump water heater with the twin-stage enthalpy-increasing compressor |
| CN103147986B (en) * | 2011-12-07 | 2015-09-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Dual-level enthalpy adding compressor and there is its air conditioner and heat pump water heater |
| CN103291624A (en) * | 2012-02-22 | 2013-09-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Single two-stage totally sealed refrigeration compressor with external mixing chamber |
| CN103291624B (en) * | 2012-02-22 | 2016-02-03 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of mixing chamber external type single twin-stage hermetically sealed compressor |
| CN103362807B (en) * | 2012-04-10 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, the air conditioning system with this compressor and heat pump water heater system |
| CN103362807A (en) * | 2012-04-10 | 2013-10-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, air conditioning system with same and heat-pump water heater system |
| CN103671121B (en) * | 2012-09-26 | 2015-12-16 | 珠海格力电器股份有限公司 | Enthalpy-increasing pipe of rotary compressor, fixing assembly, compressor and enthalpy-increasing method |
| CN103671121A (en) * | 2012-09-26 | 2014-03-26 | 珠海格力电器股份有限公司 | Enthalpy-increasing pipe of rotary compressor, fixing assembly, compressor and enthalpy-increasing method |
| CN105443385A (en) * | 2014-05-27 | 2016-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage enthalpy-increase compressor and air conditioner |
| CN106351844B (en) * | 2015-07-23 | 2018-10-19 | 重庆凌达压缩机有限公司 | Horizontal compressor and its inlet flange assembly |
| CN106351844A (en) * | 2015-07-23 | 2017-01-25 | 重庆凌达压缩机有限公司 | Horizontal compressor and air inlet flange assembly thereof |
| WO2018000819A1 (en) * | 2016-06-29 | 2018-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotating cylinder enthalpy-increasing piston compressor and air conditioning system provided with same |
| CN106168214A (en) * | 2016-06-29 | 2016-11-30 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of cylinder that turns increases enthalpy piston compressor and has its air conditioning system |
| US11067077B2 (en) | 2016-06-29 | 2021-07-20 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Rotating cylinder enthalpy-adding piston compressor and air conditioning system having same |
| CN108730181A (en) * | 2018-05-18 | 2018-11-02 | 珠海凌达压缩机有限公司 | Pump body structure and compressor with same |
| CN114576170A (en) * | 2022-03-10 | 2022-06-03 | 珠海凌达压缩机有限公司 | Lower flange structure for compressor and compressor with lower flange structure |
| CN114576170B (en) * | 2022-03-10 | 2023-09-05 | 珠海凌达压缩机有限公司 | Lower flange structure for compressor and compressor with lower flange structure |
| CN114811984A (en) * | 2022-04-29 | 2022-07-29 | 珠海格力电器股份有限公司 | Compressor and compressor air conditioning system |
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