CN114017286B - Crankshaft rotation supporting structure, compressor and temperature regulating equipment - Google Patents
Crankshaft rotation supporting structure, compressor and temperature regulating equipment Download PDFInfo
- Publication number
- CN114017286B CN114017286B CN202111175571.5A CN202111175571A CN114017286B CN 114017286 B CN114017286 B CN 114017286B CN 202111175571 A CN202111175571 A CN 202111175571A CN 114017286 B CN114017286 B CN 114017286B
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- Prior art keywords
- gasket
- crankshaft
- compressor
- cylinder seat
- hole
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The application discloses an embodiment of the application, which provides a crankshaft rotation supporting structure, a compressor and temperature regulating equipment, comprising: the cylinder seat is provided with a shaft hole and a cylinder hole; the crankshaft is provided with a main shaft part, a balance weight and an eccentric part, a shaft shoulder is arranged between the main shaft part and the balance weight, and the main shaft part of the crankshaft is arranged in the shaft hole; the gasket is assembled between the end part of the shaft hole of the cylinder seat and the shaft shoulder, the gasket is in contact fit with the cylinder seat and the shaft shoulder at two sides, and the surface of the gasket is provided with a wear-resistant coating. The gasket with the wear-resistant coating on the surface is adopted to realize the rotation support of the crankshaft on the cylinder seat, so that the structure is simple, the parts are few, the cost is low, the installation is convenient and reliable, the idle work of the compressor can be effectively reduced, and the coefficient of performance of the compressor is improved. Meanwhile, the gasket can be made of materials different from the cylinder seat and the crankshaft, the hardness is higher, and after the superhard coating is coated, the superhard coating is not easy to break and separate, so that long-term stable work is realized, and the technical problem that the wear-resistant coating at the position cannot be implemented is solved.
Description
Technical Field
The application is used in the field of compressors, and particularly relates to a crankshaft rotation supporting structure, a compressor and temperature regulating equipment.
Background
The domestic refrigerator compressor mainly adopts a reciprocating piston compressor, and the movement of the reciprocating piston compressor comprises a cylinder seat, a plane rolling bearing, a gasket, a crankshaft, a connecting rod, a piston pin, a piston and other parts. The plane rolling bearing usually comprises 12 bearing steel balls and a plastic retainer to form a part, and the part is assembled with a gasket up and down and then integrally assembled between the upper end of a cylinder seat shaft hole and a shaft shoulder of a crankshaft, so that the functions of reducing friction and improving COP (coefficient of performance) of the compressor are achieved. When the planar rolling bearing and the gasket are assembled, the parts are in loose fit with each other, so that the planar rolling bearing and the gasket are sometimes not assembled in place and clamped between the crankshaft and the cylinder block, and the compressor is disabled. Meanwhile, the material cost of the plane rolling bearing and the gasket is high, and the market competitiveness of the compressor is reduced.
In order to cancel the plane rolling bearing, friction is reduced, COP of the compressor is improved, and the compressor performs superhard coating treatment on the shaft shoulder of the crankshaft or the upper end surface of the shaft hole of the cylinder seat. But the crankshaft is made of ductile iron material and the cylinder block is made of gray iron material, the hardness of the materials is low, and after the superhard coating is coated, the superhard coating is easy to break and separate, so that long-term stable work cannot be realized.
Disclosure of Invention
The application aims to at least solve one of the technical problems in the prior art and provides a crankshaft rotation supporting structure, a compressor and temperature regulating equipment, which have the advantages of simple structure, few parts, low cost and convenient and reliable installation, and can effectively reduce the idle work of the compressor and improve the performance coefficient of the compressor.
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect, a crankshaft rotation support structure includes:
the cylinder seat is provided with a shaft hole and a cylinder hole;
the crankshaft is provided with a main shaft part, a balance weight and an eccentric part, a shaft shoulder is arranged between the main shaft part and the balance weight, and the main shaft part of the crankshaft is arranged in the shaft hole;
the gasket is assembled between the end part of the shaft hole of the cylinder seat and the shaft shoulder, the gasket is in contact fit with the cylinder seat and the shaft shoulder on two sides, and the surface of the gasket is provided with a wear-resistant coating.
With reference to the first aspect, in certain implementations of the first aspect, the wear-resistant coating is a tetrahedral amorphous carbon film formed on the surface of the gasket using a filtered cathodic vacuum arc coating technique.
With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, the gasket is made of 75Mn stainless steel.
With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, an annular flange is provided at an end portion of a shaft hole of the cylinder block, a skirt is provided at an edge of the gasket, the skirt extends along an axial direction, the gasket is buckled to the annular flange, and the skirt is matched with an outer peripheral surface of the annular flange.
With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, a fit clearance between the skirt and an outer peripheral surface of the annular flange is 0.05-0.90 mm, a main shaft portion of the crankshaft passes through a through hole of the gasket, and a fit clearance between an inner edge of the gasket and the main shaft portion is 1-3 mm.
With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the gasket forms a plurality of support fins through slots at a portion supported between the cylinder block and the shoulder, and the support fins are spaced apart along a circumferential direction of the through hole.
With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the support fin includes a main support fin and a plurality of auxiliary support fins, the main support fin is located on a side of the annular flange away from the cylinder hole, an included angle span α of the main support fin on a circumference is greater than or equal to 90 °, and a width a of the auxiliary support fin is greater than or equal to 2mm.
With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a gasket mounting groove is provided at a top of the annular flange, a groove depth of the gasket mounting groove is smaller than a thickness of the supporting wing, the gasket mounting groove includes a main mounting groove and an auxiliary mounting groove, the main supporting wing is embedded in the main mounting groove, and the auxiliary supporting wing is embedded in the auxiliary mounting groove.
In a second aspect, a compressor includes a crankshaft rotation support structure according to any implementation of the first aspect.
In a third aspect, a temperature regulating device comprises a compressor according to the second aspect.
One of the above technical solutions has at least one of the following advantages or beneficial effects: the gasket with the wear-resistant coating on the surface is adopted to realize the rotation support of the crankshaft on the cylinder seat, so that the structure is simple, the parts are few, the cost is low, the installation is convenient and reliable, the idle work of the compressor can be effectively reduced, and the coefficient of performance of the compressor is improved. Meanwhile, the gasket can be made of materials different from the cylinder seat and the crankshaft, the hardness is higher, and after the superhard coating is coated, the superhard coating is not easy to break and separate, so that long-term stable work is realized, and the technical problem that the wear-resistant coating at the position cannot be implemented is solved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of an embodiment of a crankshaft rotation support structure of the present application;
FIG. 2 is a schematic diagram of a crankshaft structure of the embodiment shown in FIG. 1;
FIG. 3 is a schematic view of the gasket construction of one embodiment shown in FIG. 1;
FIG. 4 is a schematic view of another embodiment of a crankshaft rotation support structure of the present application;
FIG. 5 is a schematic view of the gasket construction of one embodiment shown in FIG. 4;
FIG. 6 is a schematic view of the cylinder block structure of one embodiment shown in FIG. 4;
fig. 7 is a schematic view of the assembled cylinder block and gasket of the embodiment shown in fig. 4.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.
In the present application, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present application, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present application, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present application, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the application can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Wherein fig. 1, 6 and 7 show reference direction coordinate systems of embodiments of the present application, and the embodiments of the present application are described below with reference to the directions shown in fig. 1, 6 and 7.
Referring to fig. 1, an embodiment of the present application provides a crankshaft rotation support structure including a cylinder block 1, a crankshaft 2, and a gasket 3.
Specifically, referring to fig. 1 and 4, the cylinder block 1 is provided with a shaft hole 11 and a cylinder hole 12, the shaft hole 11 is used for being matched with the crankshaft 2, a piston 4 is arranged in the cylinder hole 12, and the piston 4 is further connected with the crankshaft 2 through a connecting rod 5 to form a crankshaft connecting rod mechanism. When the working machine works, the crankshaft 2 is driven by the motor, power is transmitted to the piston 4 through the connecting rod 5, and the piston 4 is driven to reciprocate in the cylinder hole 12, so that the compression of working media is continuously realized.
Referring to fig. 1 and 2, the crankshaft 2 is provided with a main shaft portion 21, a balance weight 22 and an eccentric portion 23, the main shaft portion 21 of the crankshaft 2 is mounted in the shaft hole 11, the crankshaft 2 is provided with a shaft shoulder 24 between the main shaft portion 21 and the balance weight 22, and the shaft shoulder 24 is used for being matched with the gasket 3 below to realize rotary support of the crankshaft 2 on the cylinder block 1.
Referring to fig. 1, a flat gasket or a special-shaped gasket is adopted as the gasket 3, the gasket 3 is assembled between the end part of the shaft hole 11 of the cylinder seat 1 and the shaft shoulder 24, the main shaft part 21 of the crankshaft 2 passes through the inner hole of the gasket 3, the gasket 3 is in contact fit with the cylinder seat 1 and the shaft shoulder 24 on two sides, a wear-resistant coating is arranged on the surface of the gasket 3, and the gasket 3 is arranged between the cylinder seat 1 and the crankshaft 2, so that friction can be reduced and COP of the compressor can be improved.
The embodiment of the application adopts the gasket 3 with the wear-resistant coating on the surface to realize the rotary support of the crankshaft 2 on the cylinder seat 1, has simple structure, less parts, low cost and convenient and reliable installation, can effectively reduce the idle work of the compressor and improve the coefficient of performance of the compressor. Meanwhile, the gasket 3 can be made of materials different from the cylinder seat 1 and the crankshaft 2, the hardness is higher, and after the superhard coating is coated, the superhard coating is not easy to crack and separate, so that long-term stable work is realized, and the technical problem that the wear-resistant coating at the position cannot be implemented is solved.
The wear-resistant coating can be arranged according to the needs, such as a nano ceramic wear-resistant coating, a KN17 high polymer ceramic wear-resistant coating, a JP8000 tungsten carbide wear-resistant coating and a nickel-chromium alloy coating.
In some embodiments, the wear-resistant coating adopts a tetrahedral amorphous carbon film formed on the surface of the gasket 3 by adopting a filtered cathode vacuum arc coating technology, and compared with other wear-resistant coatings, the tetrahedral amorphous carbon film has the characteristics of super-hard and wear-resistant, and has very low friction coefficient, so that the friction power between the crankshaft 2 and the gasket 3 can be reduced, and the COP of the compressor is further improved.
In some embodiments, the gasket 3 is made of a high-hardness material, such as 75Mn stainless steel, which has a higher hardness and can reduce the hardness difference from the tetrahedral amorphous carbon film, and after the superhard coating is coated, the superhard coating is less prone to break and separate, so that long-term stable operation is realized.
Referring to fig. 1, 3 and 6, in some embodiments, the end of the shaft bore 11 of the cylinder block 1 is provided with an annular flange 13, the edge of the gasket 3 is provided with a skirt 31, the skirt 31 extends axially, and the skirt 31 may be continuous or discontinuous. The gasket 3 is fastened to the annular flange 13, the bottom end surface of the gasket 3 abuts against the annular flange 13, and the skirt 31 engages with the outer peripheral surface of the annular flange 13. In this embodiment, the gasket 3 realizes the limit through the skirt 31, so that the gasket 3 can only contact with the upper end of the shaft hole 11 of the cylinder seat 1 in the radial direction, but cannot contact with the main shaft portion 21 of the crankshaft 2, and the relatively static gasket 3 is prevented from cutting the main shaft portion 21 of the crankshaft 2, so that the compressor fails.
Further, the fit clearance between the skirt 31 and the outer peripheral surface of the annular flange 13 is 0.05 to 0.90mm, and the fit clearance between the inner edge of the gasket 3 and the main shaft portion 21 is 1 to 3mm, with the main shaft portion 21 of the crankshaft 2 passing through the through hole of the gasket 3. The above-described parameter selection can reduce the difficulty of assembling the gasket 3 on the premise of ensuring that the gasket 3 does not cut the main shaft portion 21 of the crankshaft 2.
It will be appreciated that the gasket 3 may be implemented by providing a caulking groove on the cylinder block 1, which is matched with the gasket 3, in addition to the skirt 31.
Referring to fig. 4 and 5, in some embodiments, the gasket 3 is formed with a plurality of support tabs by grooving at portions supported between the cylinder block 1 and the shoulder 24, the support tabs being spaced apart along the circumferential direction of the through hole. The top ring of the gasket 3 is divided into a plurality of supporting surfaces through grooves, and because refrigerating machine oil with certain viscosity exists between the top plane of the gasket 3 and the shaft shoulder 24 of the crankshaft 2, when the crankshaft 2 rotates at a high speed, viscous resistance is generated by the refrigerating machine oil, so that the compressor does idle work, and COP is affected. Therefore, the application divides the annular plane at the top of the gasket 3, reserves a plurality of supporting surfaces, can greatly reduce the viscous resistance of the refrigerator oil, reduces the idle work of the compressor and improves the COP.
Further, referring to FIG. 5, the support tabs include a main support tab 32 and a plurality of auxiliary support tabs 33, the main support tab 32 being located on a side of the annular flange 13 remote from the cylinder bore 12, the main support tab 32 having an angular span α of 90 ° or more on the circumference, the auxiliary support tab 33 having a width A of 2mm or more. The above structural design is considered as follows: because the process of the greatest stress of the crankshaft 2 is when the piston 4 does compression work when the compressor works, the crankshaft 2 pushes the piston 4 to compress refrigerant to do work through the connecting rod 5. The crankshaft 2 receives the reaction force of the connecting rod 5, acts on the shoulder 24 on the side remote from the cylinder bore 12, and transmits to the washer 3 and the upper end of the shaft bore 11 of the cylinder block 1. Therefore, the washer 3 of the application is provided with the main supporting wing 32 which is positioned at one side far away from the cylinder hole 12, can better bear the reaction force of the connecting rod 5, reduce the contact pressure, reduce the stress of the super-hard coating at the top of the washer 3 and avoid the cracking and falling of the coating. In other directions, the gasket 3 is stressed very little, so that an auxiliary supporting surface is formed by adopting the auxiliary supporting fins 33 with a narrow width, a good supporting effect can be achieved, the coating cannot fall off, the resistance can be reduced, and the idle work of the compressor is reduced.
Further, referring to fig. 6 and 7, the top of the annular flange 13 is provided with a gasket mounting groove including a main mounting groove 14 and an auxiliary mounting groove 15, the main supporting tab 32 is embedded in the main mounting groove 14, the auxiliary supporting tab 33 is embedded in the auxiliary mounting groove 15, the gasket mounting groove corresponds to and is assembled with a plurality of supporting tabs of the gasket 3 one by one, and the assembled gasket 3 is limited in the possibility of rotational movement by the mounting groove, thereby preventing friction noise. Wherein, the groove depth of the gasket mounting groove is smaller than the thickness of the supporting wing piece so as to ensure that the top of the supporting wing piece embedded in the gasket mounting groove is exposed out of the annular flange 13 and ensure the rotating supporting function of the gasket.
Embodiments of the present application also provide a compressor including the crankshaft rotation support structure of any one of the above embodiments.
Embodiments of the present application also provide a temperature regulating apparatus including a compressor in any of the above embodiments, such as a refrigerator, an air conditioner, or the like.
In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present application is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (8)
1. A crankshaft rotation support structure, comprising:
the cylinder seat is provided with a shaft hole and a cylinder hole, and an annular flange is arranged at the end part of the shaft hole of the cylinder seat;
the crankshaft is provided with a main shaft part, a balance weight and an eccentric part, a shaft shoulder is arranged between the main shaft part and the balance weight, and the main shaft part of the crankshaft is arranged in the shaft hole;
the gasket is assembled between the end part of the shaft hole of the cylinder seat and the shaft shoulder, the gasket is in contact fit with the cylinder seat and the shaft shoulder on two sides, a wear-resistant plating layer is arranged on the surface of the gasket, a main shaft part of the crankshaft penetrates through a through hole of the gasket, the gasket forms a plurality of support fins through grooves at the part supported between the cylinder seat and the shaft shoulder, the support fins are distributed along the circumferential direction of the through hole at intervals, each support fin comprises a main support fin and a plurality of auxiliary support fins, the main support fins are positioned on one side, far away from the cylinder hole, of the annular flange, the included angle span alpha of the main support fins on the circumference is more than or equal to 90 degrees, and the width A of the auxiliary support fins is more than or equal to 2mm.
2. The crankshaft rotation support structure according to claim 1, wherein the wear-resistant coating is a tetrahedral amorphous carbon film formed on the surface of the gasket using a filtered cathodic vacuum arc coating technique.
3. The crankshaft rotation support structure according to claim 2, wherein the gasket is made of 75Mn stainless steel.
4. The crankshaft rotation support structure according to claim 1, wherein an edge of the washer is provided with a skirt extending in an axial direction, the washer being fastened to the annular flange, the skirt being fitted with an outer peripheral surface of the annular flange.
5. The crankshaft rotation support structure according to claim 4, wherein a fit clearance between the skirt and an outer peripheral surface of the annular flange is 0.05 to 0.90mm, and a fit clearance between an inner edge of the gasket and the main shaft portion is 1 to 3mm.
6. The crankshaft rotary support structure according to claim 1, wherein the annular flange top is provided with a gasket mounting groove having a groove depth smaller than the thickness of the support tab, the gasket mounting groove including a main mounting groove into which the main support tab is fitted and an auxiliary mounting groove into which the auxiliary support tab is fitted.
7. A compressor comprising the crankshaft rotation support structure of any one of claims 1 to 6.
8. A tempering apparatus comprising a compressor as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111175571.5A CN114017286B (en) | 2021-10-09 | 2021-10-09 | Crankshaft rotation supporting structure, compressor and temperature regulating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111175571.5A CN114017286B (en) | 2021-10-09 | 2021-10-09 | Crankshaft rotation supporting structure, compressor and temperature regulating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114017286A CN114017286A (en) | 2022-02-08 |
| CN114017286B true CN114017286B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111175571.5A Active CN114017286B (en) | 2021-10-09 | 2021-10-09 | Crankshaft rotation supporting structure, compressor and temperature regulating equipment |
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| CN (1) | CN114017286B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206738164U (en) * | 2017-05-31 | 2017-12-12 | 广东美芝制冷设备有限公司 | Air-conditioning, rotary compressor and its pumping installations |
| CN209976727U (en) * | 2019-06-14 | 2020-01-21 | 黄石东贝电器股份有限公司 | Self-stabilizing bearing system assembly for refrigeration compressor |
| CN110761977A (en) * | 2019-10-29 | 2020-02-07 | 东贝机电（江苏）有限公司 | Oil suspension type cylinder seat bearing structure |
| CN110809674A (en) * | 2017-05-18 | 2020-02-18 | Gkn汽车有限公司 | Molded differential gear washer with defined fluid flow path |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634870B2 (en) * | 2002-01-03 | 2003-10-21 | Tecumseh Products Company | Hermetic compressor having improved motor cooling |
| JP2005076567A (en) * | 2003-09-02 | 2005-03-24 | Toyota Industries Corp | Compressor |
-
2021
- 2021-10-09 CN CN202111175571.5A patent/CN114017286B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809674A (en) * | 2017-05-18 | 2020-02-18 | Gkn汽车有限公司 | Molded differential gear washer with defined fluid flow path |
| CN206738164U (en) * | 2017-05-31 | 2017-12-12 | 广东美芝制冷设备有限公司 | Air-conditioning, rotary compressor and its pumping installations |
| CN209976727U (en) * | 2019-06-14 | 2020-01-21 | 黄石东贝电器股份有限公司 | Self-stabilizing bearing system assembly for refrigeration compressor |
| CN110761977A (en) * | 2019-10-29 | 2020-02-07 | 东贝机电（江苏）有限公司 | Oil suspension type cylinder seat bearing structure |
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| CN114017286A (en) | 2022-02-08 |
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