CN109026715B - Pump body and compressor with same - Google Patents

Pump body and compressor with same Download PDF

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Publication number
CN109026715B
CN109026715B CN201810956687.4A CN201810956687A CN109026715B CN 109026715 B CN109026715 B CN 109026715B CN 201810956687 A CN201810956687 A CN 201810956687A CN 109026715 B CN109026715 B CN 109026715B
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CN
China
Prior art keywords
flange
inner ring
face
pump body
lubrication structure
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.)
Active
Application number
CN201810956687.4A
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Chinese (zh)
Other versions
CN109026715A (en
Inventor
程晓桐
邓丽颖
吴飞
柳鹏
赵庆富
万鹏凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority to CN201810956687.4A priority Critical patent/CN109026715B/en
Priority to PCT/CN2018/120663 priority patent/WO2020037890A1/en
Publication of CN109026715A publication Critical patent/CN109026715A/en
Application granted granted Critical
Publication of CN109026715B publication Critical patent/CN109026715B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-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
    • F04C18/34Rotary-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
    • F04C18/344Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3446Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • F04C18/3447Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00

Abstract

The invention provides a pump body and a compressor with the same, wherein the pump body comprises: a first flange and a second flange; the bearing is provided with an inner ring, the inner ring is rotatably arranged between the first flange and the second flange, the first end face of the inner ring is abutted with the first flange, and the second end face of the inner ring is abutted with the second flange; the first lubricating structure is arranged between the inner ring and the first flange so as to form an oil film between the inner ring and the first flange; and/or a second lubricating structure is arranged between the inner ring and the second flange so as to form an oil film between the inner ring and the second flange. According to the technical scheme provided by the invention, the problem of large friction between the inner ring of the pump body and the flange in the prior art can be solved.

Description

Pump body and compressor with same
Technical Field
The invention relates to the technical field of compressors, in particular to a pump body and a compressor with the pump body.
Background
The compression cavity of the sliding vane compressor is separated from the inner wall of the cylinder by the sliding vane, so in the traditional sliding vane compressor, the relative speed between the head of the sliding vane and the inner wall surface of the cylinder is very high, thereby causing overlarge friction between the head of the sliding vane and the inner wall surface of the cylinder, affecting the power consumption and the performance, and the overlarge friction for a long time can generate abrasion to further affect the reliability of the whole compressor.
In order to reduce friction and improve reliability, there are schemes for optimizing and reforming a cylinder part of a conventional sliding vane compressor, namely, using a bearing to replace the original cylinder structure. As the inner ring of the rolling bearing can rotate, compared with a fixed cylinder, the relative speed between the sliding vane head and the inner ring of the bearing can be greatly reduced, and the friction between the sliding vane head and the inner ring of the bearing can be greatly reduced, thereby achieving the purposes of reducing friction and improving reliability.
However, this solution brings about a new friction pair, namely friction between the end face of the inner ring of the bearing and the flange. Friction is not obvious at low rotational speeds, and excessive friction may occur once the operating speed is increased, which may also cause increased power consumption or reliability problems, similar to the foregoing.
Disclosure of Invention
The invention provides a pump body and a compressor with the same, and aims to solve the problem that friction between an inner ring of the pump body and a flange is large in the prior art.
In order to solve the above-described problems, according to an aspect of the present invention, there is provided a pump body including: a first flange and a second flange; the bearing is provided with an inner ring, the inner ring is rotatably arranged between the first flange and the second flange, the first end face of the inner ring is abutted with the first flange, and the second end face of the inner ring is abutted with the second flange; the first lubricating structure is arranged between the inner ring and the first flange so as to form an oil film between the inner ring and the first flange; and/or a second lubricating structure is arranged between the inner ring and the second flange so as to form an oil film between the inner ring and the second flange.
Further, the first end face is an arc face, and the first lubrication structure includes the first end face.
Further, the portion of the first flange opposite to the first end face is a first contact face, the first contact face is an arc-shaped face to match the first end face, and the first lubrication structure further includes the first contact face.
Further, in a section through the axis of the inner ring, the first end face is convex toward the first flange, and the first contact face is concave away from the inner ring.
Further, in a section through the axis of the inner ring, the first end face is recessed in a direction away from the first flange, and the first contact face is projected in a direction toward the inner ring.
Further, the second end face is an arc face, and the second lubrication structure includes the second end face.
Further, the portion of the second flange opposite to the second end face is a second contact surface, the second contact surface is an arc-shaped surface to match the second end face, and the second lubrication structure further includes a second contact surface.
Further, in a section through the axis of the inner ring, the second end face is convex in a direction toward the second flange, and the second contact face is concave in a direction away from the inner ring.
Further, in a section through the axis of the inner ring, the second end face is recessed in a direction away from the second flange, and the second contact face is projected in a direction toward the inner ring.
According to another aspect of the present invention, there is provided a compressor comprising a pump body, the pump body being provided as described above.
By applying the technical scheme of the invention, the first lubricating structure is arranged between the inner ring and the first flange, so that after the lubricating oil is added, the inner ring can form a lubricating oil film between the inner ring and the first flange during rotation, thereby having good lubricating effect, reducing friction between the first end face and the first flange, and correspondingly, the second lubricating structure is arranged between the inner ring and the second flange, and reducing friction between the second end face and the second flange. Therefore, through the technical scheme of the invention, the friction between the inner ring and the flange can be reduced, so that the reliability of the pump body can be improved and the power consumption can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows an exploded view of a pump body provided in accordance with a first embodiment of the present invention;
FIG. 2 shows a cross-sectional view of the pump body of FIG. 1;
FIG. 3 shows a schematic structural view of the inner ring of FIG. 2;
fig. 4 shows a cross-sectional view of a pump body provided by a second embodiment of the present invention;
fig. 5 shows a cross-sectional view of a pump body provided by a third embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. a first flange; 20. a second flange; 30. a bearing; 31. an inner ring; 311. a first end face; 312. a second end face; 32. an outer ring; 40. a main shaft; 50. a sliding vane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, a first embodiment of the present invention provides a pump body including: a first flange 10 and a second flange 20; a bearing 30, the bearing 30 having an inner ring 31, the inner ring 31 being rotatably provided between the first flange 10 and the second flange 20, a first end surface 311 of the inner ring 31 being in contact with the first flange 10, and a second end surface 312 of the inner ring 31 being in contact with the second flange 20; wherein, a first lubrication structure is arranged between the inner ring 31 and the first flange 10 to form an oil film between the inner ring 31 and the first flange 10; and/or a second lubrication structure between the inner ring 31 and the second flange 20 to form an oil film between the inner ring 31 and the second flange 20.
In this embodiment, the bearing 30 further includes an outer ring 32, the outer ring 32 is fixedly connected to the first flange 10 and the second flange 20, and the inner ring 31 is rotatably disposed on the outer ring 32.
By applying the technical scheme of the embodiment, the first lubrication structure is arranged between the inner ring 31 and the first flange 10, so that after the lubricating oil is added, the inner ring 31 can form a lubricating oil film between the inner ring 31 and the first flange 10 during rotation, thereby having good lubrication effect, reducing friction between the first end face 311 and the first flange 10, and correspondingly, the second lubrication structure is arranged between the inner ring 31 and the second flange 20, so that friction between the second end face 312 and the second flange 20 can be reduced. Therefore, by the technical solution of the present embodiment, friction between the inner ring 31 and the flange can be reduced, so that reliability of the pump body can be improved and power consumption can be reduced.
In the present embodiment, the first lubrication structure may be provided as a groove opened on the first end surface 311 of the inner ring 31 or on the first flange 10, through which lubricating oil may be stored, thereby facilitating formation of a lubricating oil film between the inner ring 31 and the first flange 10. The first lubrication structure may be further configured as an arc structure, and the inner ring 31 is matched with the first flange 10 through the arc structure, so that the inner ring 31 is convenient to form dynamic pressure lubrication, that is, a lubrication film, between the inner ring 31 and the first flange 10 during rotation, thereby reducing wear.
Accordingly, the second lubrication structure may be provided as a groove opened on the second end surface 312 of the inner ring 31 or on the second flange 20, through which lubricating oil may be stored, thereby facilitating the formation of a lubricating oil film between the inner ring 31 and the second flange 20. The second lubrication structure may be further configured as an arc structure, where the inner ring 31 is matched with the second flange 20 through the arc structure, so that the inner ring 31 is convenient to form dynamic pressure lubrication, that is, a lubrication film, between the inner ring 31 and the second flange 20 during rotation, thereby reducing wear.
In this embodiment, the first end surface 311 is an arc surface, and the first lubrication structure includes the first end surface 311. By providing the first end surface 311 as an arcuate surface, a lubricating oil film is facilitated to be formed between the first end surface 311 of the inner ring 31 and the first flange 10, so that wear can be reduced.
As shown in fig. 2, a portion of the first flange 10 opposite to the first end surface 311 is a first contact surface, which is an arc-shaped surface to match the first end surface 311, and the first lubrication structure further includes the first contact surface. In this way, the arc-shaped first end face 311 is matched with the arc-shaped first contact face, so that a lubricating oil film is more easily formed between the first end face 311 and the first contact face when the inner ring 31 rotates, abrasion between the inner ring 31 and the first flange 10 can be reduced, and reliability of the pump body is improved.
As shown in fig. 2 and 3, in the present embodiment, in a section through the axis of the inner ring 31, the first end face 311 protrudes toward the first flange 10, and the first contact face is recessed away from the inner ring 31.
Of course, in a section through the axis of the inner ring 31, the first end face 311 may be recessed in a direction away from the first flange 10, and the first contact face may be projected in a direction toward the inner ring 31, and the abrasion reduction purpose may be achieved as well.
In this embodiment, the second end surface 312 is an arcuate surface, and the second lubrication structure includes the second end surface 312. By providing the second end surface 312 as an arc surface, a lubricating oil film is facilitated to be formed between the second end surface 312 of the inner ring 31 and the second flange 20, so that wear can be reduced.
In this embodiment, the portion of the second flange 20 opposite the second end surface 312 is a second contact surface, and the second contact surface is an arc surface to match the second end surface 312, and the second lubrication structure further includes a second contact surface. In this way, the arc-shaped second end surface 312 is matched with the arc-shaped second contact surface, so that a lubricating oil film is more easily formed between the second end surface 312 and the second contact surface when the inner ring 31 rotates, abrasion between the inner ring 31 and the second flange 20 can be reduced, and the reliability of the pump body is improved.
As shown in fig. 2 and 3, in a cross section through the axis of the inner ring 31, the second end face 312 protrudes toward the second flange 20, and the second contact face is recessed away from the inner ring 31.
Of course, in a section through the axis of the inner ring 31, the second end face 312 may be recessed in a direction away from the second flange 20, and the second contact face may be projected in a direction toward the inner ring 31, and the purpose of reducing wear may be achieved as well.
As shown in fig. 3, in the present embodiment, the inner ring 31 is a solid of revolution, and the height of the outer surface of the inner ring 31 is equal to the height of the inner surface of the inner ring 31 in the axial direction of the inner ring 31. This arrangement can facilitate the manufacture of the inner ring 31 and reduce the manufacturing cost.
As shown in fig. 1, the pump body further includes: a main shaft 40 rotatably penetrating the cavity of the inner ring 31; the sliding piece 50 is slidably disposed on the main shaft 40 to space the cavity between the main shaft 40 and the inner ring 31. In this way, the compression of the refrigerant can be achieved by the rotation of the spindle 40 in the cavity of the inner ring 31 and the action of the slide 50.
As shown in fig. 4, a pump body according to a second embodiment of the present invention is different from the first embodiment in that the first end surface 311 of the inner ring 31 is an arc surface, the first contact surface of the first flange 10 is an arc surface, the second end surface 312 of the inner ring 31 is a plane, and the second contact surface of the second flange is a plane.
As shown in fig. 5, a third embodiment of the present invention provides a pump body, unlike the first embodiment, the first end surface 311 of the inner ring 31 is a plane, the first contact surface of the first flange 10 is a plane, the second end surface 312 of the inner ring 31 is an arc surface, and the second contact surface of the second flange is an arc surface.
The fourth embodiment of the invention provides a compressor, which comprises a pump body, wherein the pump body is provided by the fourth embodiment. By applying the technical scheme of the embodiment, the first lubrication structure is arranged between the inner ring 31 and the first flange 10, so that after the lubricating oil is added, the inner ring 31 can form a lubricating oil film between the inner ring 31 and the first flange 10 during rotation, thereby having good lubrication effect, reducing friction between the first end face 311 and the first flange 10, and correspondingly, the second lubrication structure is arranged between the inner ring 31 and the second flange 20, so that friction between the second end face 312 and the second flange 20 can be reduced. Therefore, by the technical scheme of the embodiment, friction between the inner ring 31 and the flange can be reduced, so that reliability of the compressor can be improved, power consumption can be reduced, and service life can be prolonged.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

Claims (8)

1. A pump body, comprising:
a first flange (10) and a second flange (20);
a bearing (30), wherein the bearing (30) has an inner ring (31), the inner ring (31) is rotatably arranged between the first flange (10) and the second flange (20), a first end surface (311) of the inner ring (31) is abutted with the first flange (10), and a second end surface (312) of the inner ring (31) is abutted with the second flange (20);
wherein a first lubrication structure is provided between the inner ring (31) and the first flange (10) to form an oil film between the inner ring (31) and the first flange (10); and/or a second lubrication structure is provided between the inner ring (31) and the second flange (20) to form an oil film between the inner ring (31) and the second flange (20);
the first end surface (311) is an arc surface, and the first lubrication structure comprises the first end surface (311);
the part of the first flange (10) opposite to the first end face (311) is a first contact face, the first contact face is an arc-shaped face so as to be matched with the first end face (311), and the first lubrication structure further comprises the first contact face.
2. Pump body according to claim 1, characterized in that, in a section through the axis of the inner ring (31), the first end face (311) projects in the direction of the first flange (10), the first contact face being recessed away from the inner ring (31).
3. Pump body according to claim 1, characterized in that, in a section through the axis of the inner ring (31), the first end face (311) is recessed in a direction away from the first flange (10), the first contact face protruding in a direction towards the inner ring (31).
4. A pump body according to any one of claims 1 to 3, wherein the second end face (312) is an arcuate face, the second lubrication structure comprising the second end face (312).
5. The pump body of claim 4, wherein a portion of the second flange (20) opposite the second end face (312) is a second contact face that is arcuate to mate with the second end face (312), the second lubrication structure further comprising the second contact face.
6. Pump body according to claim 5, characterized in that, in a section through the axis of the inner ring (31), the second end face (312) projects in the direction of the second flange (20), the second contact face being recessed away from the inner ring (31).
7. Pump body according to claim 5, characterized in that, in a section through the axis of the inner ring (31), the second end face (312) is recessed in a direction away from the second flange (20), the second contact face protruding in a direction towards the inner ring (31).
8. A compressor comprising a pump body, characterized in that it is a pump body according to any one of claims 1 to 7.
CN201810956687.4A 2018-08-21 2018-08-21 Pump body and compressor with same Active CN109026715B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810956687.4A CN109026715B (en) 2018-08-21 2018-08-21 Pump body and compressor with same
PCT/CN2018/120663 WO2020037890A1 (en) 2018-08-21 2018-12-12 Pump body and compressor having same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810956687.4A CN109026715B (en) 2018-08-21 2018-08-21 Pump body and compressor with same

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CN109026715A CN109026715A (en) 2018-12-18
CN109026715B true CN109026715B (en) 2024-02-27

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WO (1) WO2020037890A1 (en)

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CN110552880A (en) * 2019-09-30 2019-12-10 郑州凌达压缩机有限公司 Pump body structure and compressor with same

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CN107524600A (en) * 2017-09-29 2017-12-29 珠海格力节能环保制冷技术研究中心有限公司 Pump assembly and there is its compressor
CN207349076U (en) * 2017-09-29 2018-05-11 珠海格力电器股份有限公司 Pump assembly, compressor and heat transmission equipment
CN208686585U (en) * 2018-08-21 2019-04-02 珠海格力节能环保制冷技术研究中心有限公司 The pump housing and compressor with it

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CN207349078U (en) * 2017-09-29 2018-05-11 珠海格力节能环保制冷技术研究中心有限公司 Pump assembly and there is its compressor
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US4463994A (en) * 1982-03-22 1984-08-07 United Technologies Corporation Split inner race bearing
CN201714669U (en) * 2010-05-28 2011-01-19 广东美芝制冷设备有限公司 Rotary compressor
CN104196724A (en) * 2014-09-01 2014-12-10 武汉凌达压缩机有限公司 Compressor and compressor pump body
CN107524600A (en) * 2017-09-29 2017-12-29 珠海格力节能环保制冷技术研究中心有限公司 Pump assembly and there is its compressor
CN207349076U (en) * 2017-09-29 2018-05-11 珠海格力电器股份有限公司 Pump assembly, compressor and heat transmission equipment
CN208686585U (en) * 2018-08-21 2019-04-02 珠海格力节能环保制冷技术研究中心有限公司 The pump housing and compressor with it

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CN109026715A (en) 2018-12-18
WO2020037890A1 (en) 2020-02-27

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