CN101210561A - Dual-rotor rotary compressor - Google Patents

Dual-rotor rotary compressor Download PDF

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Publication number
CN101210561A
CN101210561A CNA2006101307489A CN200610130748A CN101210561A CN 101210561 A CN101210561 A CN 101210561A CN A2006101307489 A CNA2006101307489 A CN A2006101307489A CN 200610130748 A CN200610130748 A CN 200610130748A CN 101210561 A CN101210561 A CN 101210561A
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CN
China
Prior art keywords
cylinder
refrigerant
lower cylinder
bearing
rotor
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Pending
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CNA2006101307489A
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Chinese (zh)
Inventor
王海龙
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LG Electronics Tianjin Appliances Co Ltd
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LG Electronics Tianjin Appliances Co Ltd
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Application filed by LG Electronics Tianjin Appliances Co Ltd filed Critical LG Electronics Tianjin Appliances Co Ltd
Priority to CNA2006101307489A priority Critical patent/CN101210561A/en
Publication of CN101210561A publication Critical patent/CN101210561A/en
Pending legal-status Critical Current

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Abstract

Disclosed is a double-rotor rotary compressor which comprises a closed container, an electric machinery part and a compressing machinery part. A cooling medium outlet on a lower cylinder of the compressing machinery part is composed of a radial vent hole which extends outward along the radial direction from an upper end of an inner circumferential wall thereof, a vent groove which protrudes inward from an upper end of the lower cylinder and an axial vent hole which perforates downward from a rear end of the vent groove and whose bottom end is communicated with the rear end of the radial vent hole. The double-rotor rotary compressor changes the exhaust mode of the lower cylinder from downward exhaust mode to upward exhaust mode, thus a vent on a lower bearing is unnecessary to be processed, and a lower muffler can be removed, thereby the amount of parts, processing procedures, leakage of cooling medium and production cost can be reduced, and refrigeration performance of the cooling medium can be improved. In addition, since the cooling medium discharged from the lower cylinder can be directly discharged upward, exhaust resistance is weak, and stroke is comparatively shorter, thereby performance of the compressor can be improved.

Description

A kind of double-rotor rotary compressor
Technical field
The present invention relates to a kind of double-rotor rotary compressor, particularly relate to and a kind ofly can reduce coolant leakage and exhaust resistance, therefore can improve the double-rotor rotary compressor of product performance.
Background technique
In general, compressor is a kind of machine of compressed fluid.This compressor is by the seal container with certain inner space, is installed in the seal container and can produces the electromechanical part of driving force and can utilize the driving force of electromechanical part and the compression mechanical portion of compressed fluid constitutes.Fig. 1 is the double-rotor rotary compressor longitudinal construction sectional view of prior art.Fig. 2 is compression mechanical portion partial structurtes sectional block diagram in the double-rotor rotary compressor shown in Fig. 1.Fig. 3 is compression mechanical portion longitudinal construction sectional view in the double-rotor rotary compressor shown in Fig. 1.As Fig. 1~shown in Figure 3, the seal container of the double-rotor rotary compressor of this prior art is provided with two refrigerant inlet openings 1 that link to each other with refrigerant inlet ductwork on the liquid container 20 by a side, 6, and loam cake 4 and lower cover 5 that the cylindrical housing 3, the center portion that fill lubricant oil, bottom is provided with coolant outlet port 2 constitute.The electromechanical part on seal container top mainly by be fixed on cylindrical housing 3 inwalls stator 7 and the center of stator 7 and can by and stator 7 between the rotor 8 that is rotated of electromagnetic action form.The compression mechanical portion that is positioned at the seal container bottom comprises mainly then and is arranged on upside that the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening 1 on the shell 3, and cavity one side upper end-face edge is formed with the upper cylinder 9 of upper cylinder refrigerant exit; Be arranged on the below of upper cylinder 9, the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening 6 on the shell 3, and cavity one side lower edge is formed with the lower cylinder 10 of lower cylinder refrigerant exit; Be installed in the upper-end surface of upper cylinder 9, and be formed with the upper bearing 11 of the upper bearing relief opening that is connected with upper cylinder refrigerant exit on the upper cylinder 9 on it; Be installed in the lower end surface of lower cylinder 10, and be formed with the lower bearing 12 of the lower bearing relief opening that is connected with lower cylinder refrigerant exit on the lower cylinder 10 on it; Be arranged between upper cylinder 9 and the lower cylinder 10, be used to separate the intermediate plate 40 of two compression chambers; Be installed in respectively on the lower end surface of the upper-end surface of upper bearing 11 and lower bearing 12, be used to eliminate the top baffler 41 and the bottom baffler 42 of the noise that when upper bearing relief opening and lower bearing relief opening are discharged refrigerant, produces; The center portion of running through rotor 8, top baffler 41, upper bearing 11, upper cylinder 9, intermediate plate 40, lower cylinder 10 and lower bearing 12, and the bottom standoff distance is formed with the 1st eccentric part 13 and the 2nd eccentric part 14 that the position differs 180 degree, can together rotate with rotor 8, thereby the rotating force that electromechanical part produces be passed to the bent axle 15 of compression mechanical portion; Be enclosed within the outside of the 1st eccentric part 13 and the 2nd eccentric part 14 on the bent axle 15 respectively, and can be respectively be rotated and roll ring the 16 and the 2nd with the 1st of compression refrigerant and roll ring 17 in the inside cavity of upper cylinder 9 and lower cylinder 10; In addition, a side standoff distance of upper bearing 11, upper cylinder 9, intermediate plate 40, lower cylinder 10 and lower bearing 12 vertically runs through and is formed with 2 exhaust passages 43.When this double-rotor rotary compressor moves, the rotor 8 at seal container central upper portion position will by and stator 7 between electromagnetic action carry out high speed rotating, drive simultaneously to run through the bent axle 15 at its center and to be enclosed within the 1st of bent axle 15 bottoms and roll ring the 13 and the 2nd and roll ring 14 and also together rotate, thereby will be from liquid container 20 and through refrigerant inlet opening 1,6 and the refrigerant that enters into upper cylinder 9 and lower cylinder 10 inside compress, refrigerant through upper cylinder 9 internal compression will drain into the upper inside of shell 3 from upper bearing relief opening on the upper bearing 11 and exhaust valve plate mounted thereto through top baffler 41 afterwards, and upwards flow to electromechanical part; And will upwards flow to electromechanical part through bottom baffler 42 and from 2 exhaust passages 43 from the exhaust valve plate mounted thereto of the lower bearing relief opening on the lower bearing 12 through the refrigerant of lower cylinder 10 internal compression, at last be expelled back into the circulatory system from the coolant outlet port 2 that is arranged in loam cake 4 center portions with the refrigerant of discharging from top baffler 41.But there is following point in the double-rotor rotary compressor of this prior art: because bottom baffler 42 utilizes process for stamping to make, therefore more or less there are some slits in the connection part between itself and the lower bearing 12, therefore the refrigerant that is discharged to bottom baffler 42 inside of the lower bearing relief opening from the lower bearing 12 has a small part flows into shells 3 by these slits bottom, the lubricant oil of shell 3 bottoms also can enter into the inside of bottom baffler 42 by this slit simultaneously, so not only can cause the decreased performance of compressor because of coolant leakage, and the long-pending oil of bottom baffler 42 inside also can increase exhaust resistance.In addition, as mentioned above, owing to the refrigerant after the compression in lower cylinder 10 needs through the exhaust passage 43 tops that are discharged to shell 3, so the path complications and the stroke of coolant discharging are longer, also can reduce the performance of compressor so undoubtedly.In addition, because the part refrigerant flows into the bottom of shell 3, will cause the oil header that the is installed in bent axle 15 lower ends oil suction difficulty that makes progress like this, thus the parts that cooperatively interact in electromechanical part and the compression mechanical portion will strengthen because of oil starvation cause wearing and tearing, thereby influence life-span of compressor.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide and a kind ofly can reduce coolant leakage and exhaust resistance, the quantity of parts reduces, thus the double-rotor rotary compressor that can improve product performance and increase the service life.
In order to achieve the above object, double-rotor rotary compressor provided by the invention comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is provided with two refrigerant inlet openings that link to each other with refrigerant inlet ductwork on the liquid container by a side, and the bottom fills the cylindrical housing of lubricant oil, loam cake and the lower cover that the center portion is provided with coolant outlet port constitutes; The electromechanical part on seal container top mainly by be fixed on the cylindrical housing inwall stator and the center of stator and can by and stator between the rotor that is rotated of electromagnetic action form; The compression mechanical portion that is positioned at the seal container bottom comprises mainly and is arranged on upside that the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening on the shell, and cavity one side upper end-face edge is formed with the upper cylinder of upper cylinder refrigerant exit; Be arranged on the below of upper cylinder, the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening on the shell, and cavity one side upper end is formed with the lower cylinder of lower cylinder refrigerant exit; Be installed in the upper-end surface of upper cylinder, and be formed with the upper bearing of the upper bearing relief opening that is connected with upper cylinder refrigerant exit on the upper cylinder on it; Be installed in the lower bearing on the lower cylinder lower end surface; Be arranged between upper cylinder and the lower cylinder, be used to separate the intermediate plate of two compression chambers; Be installed on the upper-end surface of upper bearing the top baffler of the noise that produces when being used to eliminate from upper bearing relief opening and exhaust passage discharge refrigerant; The center portion of running through rotor, top baffler, upper bearing, upper cylinder, intermediate plate, lower cylinder and lower bearing, and the bottom standoff distance is formed with the 1st eccentric part and the 2nd eccentric part that the position differs 180 degree, can together rotate with rotor, thereby the rotating force that electromechanical part produces be passed to the bent axle of compression mechanical portion; Be enclosed within the outside of the 1st eccentric part and the 2nd eccentric part on the bent axle respectively, and can be respectively be rotated and roll ring and the 2nd with the 1st of compression refrigerant and roll ring in the inside cavity of upper cylinder and lower cylinder; Lower cylinder refrigerant exit on the described lower cylinder is extended radially outward by the inner peripheral wall upper end portion from lower cylinder and the rod radial air vent that forms, caving inward from the upper-end surface of lower cylinder forms, and the air vent of exhaust valve plate is installed on it and connects the axial vent holes that formation and lower end be connected with the rear end of rod radial air vent from the rear end of air vent downwards and constitute.
Vertical running through of one side of described upper bearing, upper cylinder and intermediate plate is formed with the exhaust passage, and the upper end of exhaust passage is positioned at the inside of top baffler.
The front end of described air vent links to each other with the lower end of exhaust passage.
Double-rotor rotary compressor provided by the invention is to make its underpart cylinder into exhaust mode by original following exhaust mode, so not only need not on lower bearing, to process the lower bearing relief opening, but also can remove the bottom baffler, thereby can reduce parts quantity, manufacturing procedure, refrigerant leakage and reduce production costs, therefore can improve the refrigerating capacity of refrigerant.In addition, the discharge because the refrigerant of discharging from lower cylinder can directly make progress so exhaust resistance is little and stroke is shorter, so can improve the performance of compressor.In addition,, thereby can provide sufficient lubricating oil, can prolong the working life of compressor thus for electromechanical part and compression mechanical portion because the lubricant oil that is arranged in outer casing bottom not have the refrigerant of leakage, thereby can not cause oil header oil suction difficulty.
Description of drawings
Below in conjunction with the drawings and specific embodiments double-rotor rotary compressor provided by the invention is elaborated.The parts identical with prior art use identical symbol, and omit its explanation of carrying out.
Fig. 1 is the double-rotor rotary compressor longitudinal construction sectional view of prior art.
Fig. 2 is compression mechanical portion partial structurtes sectional block diagram in the double-rotor rotary compressor shown in Fig. 1.
Fig. 3 is compression mechanical portion longitudinal construction sectional view in the double-rotor rotary compressor shown in Fig. 1.
Fig. 4 is a compression mechanical portion partial structurtes sectional block diagram in the double-rotor rotary compressor of the present invention.
Fig. 5 is a compression mechanical portion longitudinal construction sectional view in the double-rotor rotary compressor of the present invention.
Fig. 6 is the compression mechanical portion middle and lower part bearing structure stereogram shown in Fig. 4.
Fig. 7 is the lower bearing partial structurtes amplification stereogram shown in Fig. 6.
Embodiment
As Fig. 4~Fig. 7 and shown in Figure 1, double-rotor rotary compressor provided by the invention comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is provided with two refrigerant inlet openings 1,6 that link to each other with refrigerant inlet ductwork on the liquid container 20 by a side, and loam cake 4 and lower cover 5 that the cylindrical housing 3, the center portion that fill lubricant oil, bottom is provided with coolant outlet port 2 constitute; The electromechanical part on seal container top mainly by be fixed on cylindrical housing 3 inwalls stator 7 and the center of stator 7 and can by and stator 7 between the rotor 8 that is rotated of electromagnetic action form; The compression mechanical portion that is positioned at the seal container bottom comprises mainly and is arranged on upside that the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening 1 on the shell 3, and cavity one side upper end-face edge is formed with the upper cylinder 9 of upper cylinder refrigerant exit; Be arranged on the below of upper cylinder 9, the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening 6 on the shell 3, and cavity one side upper end is formed with the lower cylinder 45 of lower cylinder refrigerant exit 44; Be installed in the upper-end surface of upper cylinder 9, and be formed with the upper bearing 11 of the upper bearing relief opening that is connected with upper cylinder refrigerant exit on the upper cylinder 9 on it; Be installed in the lower bearing 46 on lower cylinder 45 lower end surfaces; Be arranged between upper cylinder 9 and the lower cylinder 45, be used to separate the intermediate plate 40 of two compression chambers; Be installed on the upper-end surface of upper bearing 11 the top baffler 41 of the noise that produces when being used to eliminate from upper bearing relief opening and exhaust passage 43 discharge refrigerants; The center portion of running through rotor 8, top baffler 41, upper bearing 11, upper cylinder 9, intermediate plate 40, lower cylinder 45 and lower bearing 46, and the bottom standoff distance is formed with the 1st eccentric part 13 and the 2nd eccentric part 14 that the position differs 180 degree, can together rotate with rotor 8, thereby the rotating force that electromechanical part produces be passed to the bent axle 15 of compression mechanical portion; Be enclosed within the outside of the 1st eccentric part 13 and the 2nd eccentric part 14 on the bent axle 15 respectively, and can be respectively be rotated and roll ring the 16 and the 2nd with the 1st of compression refrigerant and roll ring 17 in the inside cavity of upper cylinder 9 and lower cylinder 45; Lower cylinder refrigerant exit 44 on the described lower cylinder 45 is extended radially outward by the inner peripheral wall upper end portion from lower cylinder 45 and the rod radial air vent 47 that forms, caving inward from the upper-end surface of lower cylinder 45 forms, and the air vent 48 of exhaust valve plate is installed on it and connects the axial vent holes 49 that formation and lower end be connected with the rear end of rod radial air vent 47 from the rear end of air vent 48 downwards and constitute.Vertical running through of one side of described upper bearing 11, upper cylinder 9 and intermediate plate 40 is formed with exhaust passage 50, and the upper end of exhaust passage 50 is positioned at the inside of top baffler 41.The front end of described air vent 48 links to each other with the lower end of exhaust passage 50.When double-rotor rotary compressor provided by the invention moves, the rotor 8 at seal container central upper portion position will by and stator 7 between electromagnetic action carry out high speed rotating, drive simultaneously to run through the bent axle 15 at its center and to be enclosed within the 1st of bent axle 15 bottoms and roll ring the 13 and the 2nd and roll ring 14 and also together rotate, thereby will be from liquid container 20 and through refrigerant inlet opening 1,6 and the refrigerant that enters into upper cylinder 9 and lower cylinder 45 inside compress, will drain into the inside of top baffler 41 from the upper bearing relief opening on the upper bearing 11 and exhaust valve plate mounted thereto through the refrigerant of upper cylinder 9 internal compression afterwards; And through the refrigerant of lower cylinder 45 internal compression will be from it lower cylinder refrigerant exit 44 and not shown exhaust valve plate mounted thereto through the exhaust passage 50 inside that upwards flow to top baffler 41, drain into the upper inside of shell 3 afterwards with the refrigerant of discharging from the upper bearing relief opening, and upwards flow to electromechanical part, at last from the coolant outlet port 2 that is arranged in loam cake 4 center portions and be expelled back into the circulatory system.Because adopting, lower cylinder 45 goes up exhaust mode, therefore need not on lower bearing 46, to process the lower bearing relief opening, nor with the bottom baffler is set, so the constituent elements of press part and manufacturing procedure reduce, and problems such as coolant leakage, bottom baffler inner product oil and exhaust resistance are big appear never again, therefore can improve the refrigerating capacity of refrigerant.In addition, because the refrigerant of discharging from lower cylinder 45 is directly upwards to discharge,, therefore can improve the performance of compressor so its stroke is shorter.

Claims (3)

1. a double-rotor rotary compressor comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is provided with two refrigerant inlet openings (1 that link to each other with refrigerant inlet ductwork on the liquid container (20) by a side, 6), and the bottom fill the cylindrical housing (3) of lubricant oil, loam cake (4) that the center portion is provided with coolant outlet port (2) and lower cover (5) and constitute; The electromechanical part that is positioned at seal container top mainly by be fixed on the stator (7) on cylindrical housing (3) inwall and be positioned at stator (7) the center and can by and stator (7) between the rotor (8) that is rotated of electromagnetic action form; The compression mechanical portion that is positioned at the seal container bottom comprises mainly and is arranged on upside that the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening (1) on the shell (3), and cavity one side upper end-face edge is formed with the upper cylinder (9) of upper cylinder refrigerant exit; Be arranged on the below of upper cylinder (9), the cylinder refrigerant inlet on it is connected with the refrigerant inlet opening (6) on the shell (3), and cavity one side upper end is formed with the lower cylinder (45) of lower cylinder refrigerant exit (44); Be installed in the upper-end surface of upper cylinder (9), and be formed with the upper bearing (11) of the upper bearing relief opening that is connected with upper cylinder refrigerant exit on the upper cylinder (9) on it; Be installed in the lower bearing (46) on lower cylinder (45) lower end surface; Be arranged between upper cylinder (9) and the lower cylinder (45), be used to separate the intermediate plate (40) of two compression chambers; Be installed on the upper-end surface of upper bearing (11) the top baffler (41) of the noise that produces when being used for eliminating from upper bearing relief opening and exhaust passage (43) discharge refrigerant; The center portion of running through rotor (8), top baffler (41), upper bearing (11), upper cylinder (9), intermediate plate (40), lower cylinder (45) and lower bearing (46), and the bottom standoff distance is formed with the 1st eccentric part (13) and the 2nd eccentric part (14) that the position differs 180 degree, can together rotate with rotor (8), thereby the rotating force that electromechanical part produces be passed to the bent axle (15) of compression mechanical portion; Be enclosed within the outside of last the 1st eccentric part of bent axle (15) (13) and the 2nd eccentric part (14) respectively, and can be respectively be rotated and roll ring (16) and the 2nd with the 1st of compression refrigerant and roll ring (17) in the inside cavity of upper cylinder (9) and lower cylinder (45); It is characterized in that: the lower cylinder refrigerant exit (44) on the described lower cylinder (45) is extended radially outward by the inner peripheral wall upper end portion from lower cylinder (45) and the rod radial air vent (47) that forms, caving inward from the upper-end surface of lower cylinder (45) forms, and the air vent (48) of exhaust valve plate is installed on it and connects the axial vent holes (49) that formation and lower end be connected with the rear end of rod radial air vent (47) from the rear end of air vent (48) downwards and constitute.
2. double-rotor rotary compressor according to claim 1, it is characterized in that: vertical running through of described upper bearing (11), upper cylinder (9) and a side of intermediate plate (40) is formed with exhaust passage (50), and the upper end of exhaust passage (50) is positioned at the inside of top baffler (41).
3. double-rotor rotary compressor according to claim 1 is characterized in that: the front end of described air vent (48) links to each other with the lower end of exhaust passage (50).
CNA2006101307489A 2006-12-30 2006-12-30 Dual-rotor rotary compressor Pending CN101210561A (en)

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Application Number Priority Date Filing Date Title
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CN101210561A true CN101210561A (en) 2008-07-02

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374166A (en) * 2010-08-23 2012-03-14 珠海格力节能环保制冷技术研究中心有限公司 Pump body with countersink grooves and bi-rotor two-stage enthalpy-increasing compressor having same
CN102588292A (en) * 2012-02-22 2012-07-18 瑞智(青岛)精密机电有限公司 Method for increasing performance of compressor by optimizing and matching exhaust valve plates and refrigerating machine oils
CN102606482A (en) * 2011-01-24 2012-07-25 乐金电子(天津)电器有限公司 Rotary compressor and exhaust structure of cylinder of rotary compressor
CN103967801A (en) * 2013-02-05 2014-08-06 珠海格力节能环保制冷技术研究中心有限公司 Compressor, pump body assembly and high-pressure cylinder of pump body assembly
CN104481885A (en) * 2014-12-02 2015-04-01 广东美芝制冷设备有限公司 Compressor
CN107795461A (en) * 2017-10-20 2018-03-13 珠海凌达压缩机有限公司 The exhaust structure and compressor of compressor
CN108443150A (en) * 2018-01-30 2018-08-24 天津大学 New-energy automobile integral electric two-spool compressor
CN110966203A (en) * 2019-11-18 2020-04-07 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

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102374166B (en) * 2010-08-23 2015-01-21 珠海格力节能环保制冷技术研究中心有限公司 Pump body with countersink grooves and bi-rotor two-stage enthalpy-increasing compressor having same
CN102374166A (en) * 2010-08-23 2012-03-14 珠海格力节能环保制冷技术研究中心有限公司 Pump body with countersink grooves and bi-rotor two-stage enthalpy-increasing compressor having same
CN102606482B (en) * 2011-01-24 2016-09-07 乐金电子(天津)电器有限公司 Rotary Compressor and the exhaust structure of cylinder thereof
CN102606482A (en) * 2011-01-24 2012-07-25 乐金电子(天津)电器有限公司 Rotary compressor and exhaust structure of cylinder of rotary compressor
CN102588292A (en) * 2012-02-22 2012-07-18 瑞智(青岛)精密机电有限公司 Method for increasing performance of compressor by optimizing and matching exhaust valve plates and refrigerating machine oils
CN102588292B (en) * 2012-02-22 2014-11-05 瑞智(青岛)精密机电有限公司 Method for increasing performance of compressor by optimizing and matching exhaust valve plates and refrigerating machine oils
CN103967801A (en) * 2013-02-05 2014-08-06 珠海格力节能环保制冷技术研究中心有限公司 Compressor, pump body assembly and high-pressure cylinder of pump body assembly
CN103967801B (en) * 2013-02-05 2016-08-03 珠海格力节能环保制冷技术研究中心有限公司 Compressor, pump assembly and high pressure cylinder thereof
CN104481885A (en) * 2014-12-02 2015-04-01 广东美芝制冷设备有限公司 Compressor
CN107795461A (en) * 2017-10-20 2018-03-13 珠海凌达压缩机有限公司 The exhaust structure and compressor of compressor
CN108443150A (en) * 2018-01-30 2018-08-24 天津大学 New-energy automobile integral electric two-spool compressor
CN108443150B (en) * 2018-01-30 2023-11-14 天津大学 Integrated electric double-rotor compressor for new energy automobile
CN110966203A (en) * 2019-11-18 2020-04-07 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

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