CN108443115B - Compressor crankshaft and compressor for improving oil discharge - Google Patents
Compressor crankshaft and compressor for improving oil discharge Download PDFInfo
- Publication number
- CN108443115B CN108443115B CN201810429206.4A CN201810429206A CN108443115B CN 108443115 B CN108443115 B CN 108443115B CN 201810429206 A CN201810429206 A CN 201810429206A CN 108443115 B CN108443115 B CN 108443115B
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- CN
- China
- Prior art keywords
- oil
- shaft
- oil passage
- main shaft
- auxiliary shaft
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- 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.)
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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
- F04B39/0094—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
-
- 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
- F04B39/02—Lubrication
-
- 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
- F04B39/06—Cooling; Heating; Prevention of freezing
Abstract
The invention provides a compressor crankshaft for improving oil discharge and a compressor, wherein a main shaft, an eccentric shaft and an auxiliary shaft are sequentially connected, the main shaft and the auxiliary shaft are coaxially arranged, a main shaft oil passage axially arranged along the main shaft is arranged in the main shaft, an eccentric shaft oil passage axially arranged along the eccentric shaft is arranged in the eccentric shaft, an auxiliary shaft oil passage axially arranged along the auxiliary shaft is arranged in the auxiliary shaft, the main shaft oil passage, the eccentric shaft oil passage and the auxiliary shaft oil passage are communicated, a main shaft oil discharge hole communicated with the main shaft oil passage is formed in the side surface of the main shaft, an eccentric shaft oil discharge hole communicated with the eccentric shaft oil passage is formed in the side surface of the eccentric shaft, a first auxiliary shaft oil discharge hole communicated with the auxiliary shaft oil passage is formed in the side surface of the auxiliary shaft, a second auxiliary shaft oil discharge hole is formed in the tail end position of the auxiliary shaft oil passage, an oil throwing blind hole is formed in the top end of the auxiliary shaft, and the opening of the second auxiliary shaft oil discharge hole coincides with the opening part of the oil throwing blind hole. The invention has the beneficial effects that: the amount of refrigerant oil drawn from the suction muffler inlet is reduced to improve the oil discharge of the compressor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor crankshaft for improving oil discharge amount and a compressor.
Background
The refrigeration compressor is a core component of refrigeration equipment and is also a key point for the development of the left and right refrigeration industries. With the development of the home appliance industry, more requirements are put on the performance of the refrigeration compressor in the industry. The oil discharge amount of the compressor influences key parameters such as abrasion loss, heating value, cold quantity and the like of the refrigeration compressor. According to our experiments, the oil discharge amount is closely and indiscriminately related to the factors such as the piston structure, the cylinder seat structure, the crankshaft structure, the suction muffler structure, the optional gap, the refrigerator oil type and the like. The oil discharging and oil throwing at the end of the crankshaft is mainly used for lubricating each friction pair of the movement, taking away fragments of each friction pair and cooling the movement, the cylinder seat and the cylinder head on the cylinder seat. However, under the existing crankshaft structure, the phenomena of too high oil throwing height of the end of the crankshaft, too far oil throwing distance and the like can occur in the oil discharging process, so that refrigerating machine oil splashes, and the refrigerating machine oil is sucked from an inlet of the suction muffler, so that the oil discharging amount is too large, and further a series of problems of compressor cooling capacity reduction, refrigerating system blockage and the like are caused.
Disclosure of Invention
The invention aims to provide a compressor crankshaft and a compressor for improving oil discharge, which solve the technical problems that the oil discharge is too large, the cold of the compressor is reduced, and a refrigerating system is blocked due to the fact that refrigerating machine oil splashes and is sucked from an inlet of a suction muffler due to the fact that the oil throwing height of an end head of the compressor crankshaft is too high and the oil throwing distance is too long.
The invention provides a compressor crankshaft for improving oil discharge, which comprises a main shaft, an eccentric shaft and an auxiliary shaft which are sequentially connected, wherein the main shaft and the auxiliary shaft are coaxially arranged, a main shaft oil passage which is axially arranged along the main shaft is arranged in the main shaft, an eccentric shaft oil passage which is axially arranged along the eccentric shaft is arranged in the eccentric shaft, an auxiliary shaft oil passage which is axially arranged along the auxiliary shaft is arranged in the auxiliary shaft, the main shaft oil passage, the eccentric shaft oil passage and the auxiliary shaft oil passage are communicated, a main shaft oil discharge hole which is communicated with the main shaft oil passage is formed in the side surface of the main shaft, an eccentric shaft oil discharge hole which is communicated with the eccentric shaft oil passage is formed in the side surface of the eccentric shaft, a first auxiliary shaft oil discharge hole which is communicated with the auxiliary shaft oil passage is formed in the side surface of the auxiliary shaft, a second auxiliary shaft oil discharge hole is formed in the tail end position of the auxiliary shaft oil passage, an oil throwing blind hole is formed in the top end of the auxiliary shaft, and the opening of the second auxiliary shaft oil discharge hole coincides with the opening part of the oil throwing blind hole.
Further, the shape of the oil throwing blind hole is defined by a conical hole below and a cylindrical hole above, the vertex of the conical hole faces downwards, the bottom surface of the conical hole faces upwards, the conical hole and the cylindrical hole are coaxially arranged, the end surface of the cylindrical hole is identical to the bottom surface of the conical hole, and the opening of the cylindrical hole is partially overlapped with the opening of the second auxiliary shaft oil drain hole.
Further, the conical hole and the cylindrical hole are also coaxially arranged with the auxiliary shaft.
Further, the height of the cylindrical hole is 1mm, the diameter of the bottom surface of the conical hole is 10mm, and the conical hole is cut along the axis of the conical hole to form an opening angle of 120 degrees.
Further, a lubrication groove connected with the main shaft oil drain hole is formed in the side face of the main shaft.
Further, the lubricating oil grooves are spirally arranged along the axial direction of the main shaft.
Further, the main shaft oil passage is arranged coaxially with the main shaft, and the eccentric shaft oil passage is arranged coaxially with the auxiliary shaft oil passage and is deviated from the auxiliary shaft axis.
Further, the inner diameter of the eccentric shaft oil passage is the same as that of the auxiliary shaft oil passage, and the inner diameter of the eccentric shaft oil passage is smaller than that of the main shaft oil passage.
Further, the compressor crankshaft for improved oil drainage also includes a counterweight located on an opposite side of the eccentric shaft.
The invention also provides a compressor, comprising the compressor crankshaft for improving the oil discharge amount.
Compared with the prior art, the compressor crankshaft for improving the oil discharge amount and the compressor have the following characteristics and advantages:
the compressor crankshaft for improving the oil discharge quantity is arranged on the compressor, oil can be discharged through the crankshaft, oil can be thrown out from the end of the crankshaft to well lubricate each friction pair of the movement, and chips of each friction pair are taken away to well cool the movement, the cylinder seat and the cylinder head on the cylinder seat; on the basis of good lubrication and cooling, the end head of the crankshaft throws oil, the height and the distance of the oil throwing are moderate, the splashing of refrigerating machine oil is avoided, the quantity of the refrigerating machine oil sucked from an inlet of an air suction silencer is reduced, the oil discharge quantity of the compressor is improved, the reduction of the cold quantity of the compressor and the blockage of a refrigerating system are avoided, and the compressor is enabled to run stably and reliably.
The features and advantages of the present invention will become more apparent upon reading the detailed description of the invention in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a compressor crankshaft with improved oil drainage in accordance with an embodiment of the present invention;
FIG. 2 is a side view of a compressor crankshaft with improved oil discharge in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a compressor crankshaft with improved oil discharge in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a compressor crankshaft with improved oil drainage after assembling a movement according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a partial structure of a compressor according to an embodiment of the present invention;
the engine comprises a main shaft, a main shaft 11, a main shaft oil duct, a main shaft oil drain hole, a main shaft 13, a lubricating oil groove, 2, an eccentric shaft, a 21, an eccentric shaft oil duct, 22, an eccentric shaft oil drain hole, 3, a balance weight, 4, a counter shaft, 41, a counter shaft oil duct, 42, a first counter shaft oil drain hole, 43, a second counter shaft oil drain hole, 44, an oil throwing blind hole, 5, an outer bearing, 6, a cylinder head, 7, a cylinder seat, 8, an inlet of an air suction silencer, 9 and a lower casing.
Detailed Description
As shown in fig. 1 to 3, the present embodiment provides a compressor crankshaft for improving oil discharge, the crankshaft including a main shaft 1, an eccentric shaft 2, a balance weight 3 and a sub shaft 4, the main shaft 1, the eccentric shaft 2, the balance weight 3 and the sub shaft 4 being sequentially arranged from bottom to top and integrally formed. The main shaft 1 and the auxiliary shaft 2 are coaxially arranged, and the balance weight 3 is assembled on the opposite side of the eccentric shaft 2. The balance weight 3 is used for balancing unbalanced centrifugal inertia force and inertia moment of the crankshaft so as to reduce vibration amplitude and frequency of the crankshaft after high-speed rotation and enable the crankshaft to run more stably.
The main shaft 1 is internally provided with a main shaft oil duct 11, and the main shaft oil duct 11 is arranged along the axial direction of the main shaft 1. An eccentric shaft oil passage 21 is formed in the eccentric shaft 2, and the eccentric shaft oil passage 21 is arranged along the axial direction of the eccentric shaft 2. The auxiliary shaft 4 is internally provided with auxiliary shaft oil passages 41, and the auxiliary shaft oil passages 41 are arranged in the axial direction of the auxiliary shaft 4. The main shaft oil passage 11, the eccentric shaft oil passage 21, and the auxiliary shaft oil passage 41 communicate with each other. In the steady operation process of the compressor, under the action of centrifugal force, the refrigerating machine oil enters the main shaft oil duct 11 from the bottom of the compressor, and flows along the directions of the main shaft oil duct 11, the eccentric shaft oil duct 21 and the auxiliary shaft oil duct 41 in sequence.
In the present embodiment, the main shaft oil passage 11 is arranged coaxially with the main shaft 1 to avoid unbalanced centrifugal inertial force and moment of inertia of the main shaft 1. The eccentric shaft oil passage 21 is arranged coaxially with the auxiliary shaft oil passage 41, and the axes of the eccentric shaft oil passage 21 and the auxiliary shaft oil passage 41 are offset from the axis of the auxiliary shaft 4. The inner diameters of the eccentric shaft oil passage 21 and the auxiliary shaft oil passage 41 are the same, the inner diameter of the eccentric shaft oil passage 21 is smaller than the inner diameter of the main shaft oil passage 11, and refrigerating machine oil in the main shaft oil passage 11 can continuously fill the eccentric shaft oil passage 21 and the auxiliary shaft oil passage 41, so that the refrigerating machine oil in the eccentric shaft oil passage 21 and the auxiliary shaft oil passage 41 continuously flows outwards, and continuous lubrication and cooling are realized. In addition, the main shaft oil passage 11, the eccentric shaft oil passage 21 and the auxiliary shaft oil passage 41 are easy to machine and form, and the main shaft oil passage 11 can be formed by drilling from the lower end surface of the main shaft 1, and the auxiliary shaft oil passage 41 and the eccentric shaft oil passage 21 can be formed by drilling from the upper end surface of the auxiliary shaft 4.
The side of the main shaft 1 is provided with a main shaft oil drain hole 12, and the main shaft oil drain hole 12 is communicated with a main shaft oil duct 11. The side of the main shaft 1 is provided with a lubrication groove 13, the lubrication groove 13 is spirally arranged along the axial direction of the main shaft 1 to lubricate friction pairs on the main shaft 1 more uniformly, and one end of the lubrication groove 13 is connected with the main shaft oil drain hole 12. The spindle 1 is provided with the shaft hole of the cylinder seat 7, and the refrigerating machine oil flowing out of the lubricating oil groove 13 flows along the lubricating oil groove 13, so that a friction pair between the spindle 1 and the shaft hole of the cylinder seat 7 is lubricated, the friction pair is cooled, and fragments generated by friction are taken away.
An eccentric shaft oil drain hole 22 is formed in the side face of the eccentric shaft 2, and the eccentric shaft oil drain hole 22 is communicated with an eccentric shaft oil duct 21. The eccentric shaft 2 is provided with a large connecting rod head, and the refrigerating machine oil flowing out of the oil drain hole 22 of the eccentric shaft lubricates a friction pair between the eccentric shaft 2 and the large connecting rod head, so that the friction pair is cooled and fragments generated by friction are taken away.
A first auxiliary oil drain hole 42 is opened in the side surface of the auxiliary shaft 4, and the first auxiliary oil drain hole 42 communicates with the auxiliary shaft oil passage 41. The auxiliary shaft 4 is provided with an outer bearing 5, a friction pair between the auxiliary shaft 4 and the outer bearing 5 is lubricated from a first auxiliary shaft oil discharge hole 42, and the friction pair is cooled to take away fragments generated by friction.
A second sub-shaft oil drain hole 43 having a circular opening is formed in the tip end of the sub-shaft 4 at the end position of the sub-shaft oil passage 41. The top end of the auxiliary shaft 4 is provided with a blind oil throwing hole 44. The opening of the second auxiliary shaft oil drain hole 43 is partially overlapped with the opening of the oil slinger hole 44. During rotation of the crankshaft, the refrigerating machine oil enters the second auxiliary shaft oil drain hole 43 from the auxiliary shaft oil duct 41, enters the oil throwing blind hole 44 along the upper tangential plane of the second auxiliary shaft oil drain hole 43 in the second auxiliary shaft oil drain hole 43, and is thrown out from the middle part of the oil throwing blind hole 44. The refrigerator oil flows out from the second auxiliary shaft oil drain hole 43 and is thrown out through the oil throwing blind hole 44, so that the throwing out route can be optimized, the thrown refrigerator oil is sprayed to each friction pair, the temperature of each friction pair is reduced, fragments generated by friction are taken away, and the temperature of the movement is reduced. In this embodiment, the shape of the oil slinging blind hole 44 is defined by a conical hole below and a cylindrical hole above. The vertex of the conical hole faces downwards and the bottom face faces upwards, the conical hole and the cylindrical hole are coaxially arranged, and the conical hole and the cylindrical hole are coaxially arranged with the auxiliary shaft 4; the end face of the cylindrical hole is identical to the bottom face of the conical hole, and the opening of the cylindrical hole coincides with the opening portion of the second sub-shaft oil drain hole 43. By adopting the oil throwing blind hole 44 with the shape, the refrigerating machine oil thrown out by the oil throwing blind hole 44 has moderate oil throwing height and distance. More preferably, the height of the cylindrical hole is 1mm, the diameter of the bottom surface of the conical hole is 10mm, the conical hole is cut along the axis of the conical hole to form an opening angle of the conical hole to be 120 degrees, the height of the oil line is reduced, the spraying distance of the oil line is shortened, the oil line height of the refrigerating machine oil is prevented from being too high, the spraying distance is prevented from being too far, and the refrigerating machine oil is prevented from splashing and being sucked from the inlet 8 of the suction silencer.
As shown in fig. 4, the compressor crankshaft assembly core (the core mainly includes the parts directly assembled with the crankshaft in fig. 4) for improving the oil discharge amount of the present embodiment is assembled into the lower casing 9 in fig. 5 and the assembly of other parts such as the upper casing is continued to form the compressor. After the compressor crankshaft for improving the oil discharge amount is arranged on the compressor, the friction pairs of the machine core can be well lubricated through oil discharge of the crankshaft and oil throwing at the end of the crankshaft, chips of the friction pairs are taken away, and the machine core, the cylinder seat 7 and the cylinder head 6 on the cylinder seat are well cooled; on the basis of good lubrication and cooling, the oil throwing blind hole 44 at the end of the crankshaft throws oil, so that the oil throwing height and the distance are moderate, the splashing of refrigerating machine oil is avoided, the quantity of the refrigerating machine oil sucked from the inlet 8 of the suction muffler is reduced, the oil discharge quantity of the compressor is improved, the reduction of the cold quantity of the compressor and the blockage of a refrigerating system are avoided, and the compressor is enabled to run stably and reliably.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (8)
1. The utility model provides an improve compressor bent axle of oil removal volume which characterized in that: the device comprises a main shaft, an eccentric shaft and an auxiliary shaft which are sequentially connected, wherein the main shaft and the auxiliary shaft are coaxially arranged, a main shaft oil passage which is axially arranged along the main shaft is formed in the main shaft, an eccentric shaft oil passage which is axially arranged along the eccentric shaft is formed in the eccentric shaft, an auxiliary shaft oil passage which is axially arranged along the auxiliary shaft is formed in the auxiliary shaft, the main shaft oil passage, the eccentric shaft oil passage and the auxiliary shaft oil passage are communicated, a main shaft oil drain hole which is communicated with the main shaft oil passage is formed in the side surface of the main shaft, an eccentric shaft oil drain hole which is communicated with the eccentric shaft oil passage is formed in the side surface of the auxiliary shaft, a first auxiliary shaft oil drain hole which is communicated with the auxiliary shaft oil passage is formed in the side surface of the auxiliary shaft, a second auxiliary shaft oil drain hole is formed in the tail end position of the auxiliary shaft oil passage, an oil throwing blind hole is formed in the top end of the auxiliary shaft, and the opening of the second auxiliary shaft oil drain hole coincides with the opening part of the oil throwing blind hole;
the shape of the oil throwing blind hole is defined by a conical hole below and a cylindrical hole above, the vertex of the conical hole faces downwards, the bottom surface of the conical hole faces upwards, the conical hole and the cylindrical hole are coaxially arranged, the end surface of the cylindrical hole is identical to the bottom surface of the conical hole, and the opening of the cylindrical hole is overlapped with the opening part of the second auxiliary shaft oil drain hole;
the side of the main shaft is provided with a lubricating oil groove connected with the main shaft oil drain hole.
2. The improved oil discharge compressor crankshaft of claim 1 wherein: the conical hole and the cylindrical hole are also coaxially arranged with the auxiliary shaft.
3. The compressor crankshaft with improved oil discharge according to claim 1 or 2, characterized in that: the height of the cylindrical hole is 1mm, the diameter of the bottom surface of the conical hole is 10mm, and the conical hole is cut along the axis of the conical hole to form an opening angle of 120 degrees.
4. The improved oil discharge compressor crankshaft of claim 1 wherein: the lubricating oil grooves are spirally arranged along the axial direction of the main shaft.
5. The improved oil discharge compressor crankshaft of claim 1 wherein: the main shaft oil passage is arranged coaxially with the main shaft, and the eccentric shaft oil passage is arranged coaxially with the auxiliary shaft oil passage and is deviated from the auxiliary shaft axis.
6. The improved oil discharge compressor crankshaft as set forth in claim 5 wherein: the inner diameter of the eccentric shaft oil passage is the same as that of the auxiliary shaft oil passage, and the inner diameter of the eccentric shaft oil passage is smaller than that of the main shaft oil passage.
7. The improved oil discharge compressor crankshaft of claim 1 wherein: the compressor crankshaft for improved oil drainage also includes a counterweight located on the opposite side of the eccentric shaft.
8. A compressor comprising the compressor crankshaft of any one of claims 1 to 7 having improved oil discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429206.4A CN108443115B (en) | 2018-05-08 | 2018-05-08 | Compressor crankshaft and compressor for improving oil discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429206.4A CN108443115B (en) | 2018-05-08 | 2018-05-08 | Compressor crankshaft and compressor for improving oil discharge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443115A CN108443115A (en) | 2018-08-24 |
| CN108443115B true CN108443115B (en) | 2023-08-15 |
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ID=63202474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810429206.4A Active CN108443115B (en) | 2018-05-08 | 2018-05-08 | Compressor crankshaft and compressor for improving oil discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443115B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003293953A (en) * | 2002-04-04 | 2003-10-15 | Toshiba Kyaria Kk | Reciprocating hermetic motor compressor |
| CN201165958Y (en) * | 2007-12-20 | 2008-12-17 | 广州冷机股份有限公司 | Crankshaft structure of compressor for refrigeration |
| CN202718834U (en) * | 2012-06-13 | 2013-02-06 | 杭州钱江压缩机有限公司 | Crankshaft of compressor |
| CN203404045U (en) * | 2013-07-12 | 2014-01-22 | 安徽美芝制冷设备有限公司 | Crankshaft for large-size compressor |
| CN104819127A (en) * | 2015-05-12 | 2015-08-05 | 安徽美芝制冷设备有限公司 | Crankshaft for piston compressor and piston compressor with the same |
| CN208236602U (en) * | 2018-05-08 | 2018-12-14 | 青岛万宝压缩机有限公司 | Improve the compressor crank shaft and compressor of oil drain quantity |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3725208B2 (en) * | 1995-07-28 | 2005-12-07 | 松下冷機株式会社 | Hermetic compressor |
| DE602007004293D1 (en) * | 2006-11-13 | 2010-03-04 | Panasonic Corp | COMPRESSOR |
| CN201474913U (en) * | 2009-07-30 | 2010-05-19 | 徐洲 | Crankshaft structure of refrigerator compressor |
| CN105041610B (en) * | 2015-07-07 | 2017-11-07 | 安徽美芝制冷设备有限公司 | Bent axle, crankshaft group and piston compressor with it |
-
2018
- 2018-05-08 CN CN201810429206.4A patent/CN108443115B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003293953A (en) * | 2002-04-04 | 2003-10-15 | Toshiba Kyaria Kk | Reciprocating hermetic motor compressor |
| CN201165958Y (en) * | 2007-12-20 | 2008-12-17 | 广州冷机股份有限公司 | Crankshaft structure of compressor for refrigeration |
| CN202718834U (en) * | 2012-06-13 | 2013-02-06 | 杭州钱江压缩机有限公司 | Crankshaft of compressor |
| CN203404045U (en) * | 2013-07-12 | 2014-01-22 | 安徽美芝制冷设备有限公司 | Crankshaft for large-size compressor |
| CN104819127A (en) * | 2015-05-12 | 2015-08-05 | 安徽美芝制冷设备有限公司 | Crankshaft for piston compressor and piston compressor with the same |
| CN208236602U (en) * | 2018-05-08 | 2018-12-14 | 青岛万宝压缩机有限公司 | Improve the compressor crank shaft and compressor of oil drain quantity |
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| Publication number | Publication date |
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| CN108443115A (en) | 2018-08-24 |
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