CN2442002Y - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN2442002Y CN2442002Y CN 00249147 CN00249147U CN2442002Y CN 2442002 Y CN2442002 Y CN 2442002Y CN 00249147 CN00249147 CN 00249147 CN 00249147 U CN00249147 U CN 00249147U CN 2442002 Y CN2442002 Y CN 2442002Y
- Authority
- CN
- China
- Prior art keywords
- cylinder cap
- eccentric shaft
- oil groove
- cylinder head
- rotary compressor
- 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.)
- Expired - Lifetime
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a rotary compressor for air conditioners, which comprises a cylinder, an upper cylinder head, a lower cylinder head, an eccentric shaft, a rolling piston, and a vane. At least one oil groove is arranged on the anti-thrust face of the lower cylinder head; the inner end of the oil groove is from a shaft hole of the lower cylinder head, and the distance between the outer end and the center of the shaft hole is smaller than the difference of the radius of the piston and the eccentric distance of the eccentric shaft. Because the lubrication condition is improved, the utility model can well improve the lubrication condition between the lower cylinder head of a cylinder block and the eccentric shaft, reduces abrasion, and extends service life.
Description
The utility model relates to the refrigeration compressor field in the equipment such as air conditioner, refrigerator, specifically relates to a kind of rotary compressor with rolling piston.
Rotary compressor generally includes motor portion I and compressor section II, wherein compressor section comprises cylinder body 7, upper cylinder cover 2, following cylinder cap 5, eccentric shaft 1, rolling piston 6 and blade 4, eccentric shaft 1 drives rolling piston 6 to be close to the internal surface of cylindrical block 7 and to do eccentric rotation, and blade 4 is pushed by an inclined to one side dynamic component such as spring 3, and its end is close on the periphery of rolling piston 6, be divided into air-breathing the crescent shape cavity of cylinder 7 and exhaust two Room, as shown in Figure 1.When rolling piston 6 was done eccentric rotation along the internal surface of cylinder 7, the volume generating period variation of induction chamber and exhaust chamber was compressed the gas of suction.The characteristics of rotary compressor are the refrigerating efficiency height, and volume is little, and are in light weight.
In described rotary compressor, be generally boundary lubrication between upper and lower cylinder cap 2,5 and the eccentric shaft 1, and down the thrust surface of cylinder cap 5 is as weight bearing area, often reason wearing and tearing such as excessive or fuel feeding deficiency are particularly serious owing to pressure in the using process.Cylinder cap 5 under the cylinder body with smooth thrust surface that uses is unfavorable for the storage of lubricant oil and the foundation of oil film at present, easier generation thrust surface wearing and tearing under the unfavorable situation of compressor operation operating mode.
The purpose of this utility model is to propose a kind of rotary compressor, and the oil groove of increasing on the thrust surface of mat to cylinder cap under it improves lubricating between this time cylinder cap and eccentric shaft, improves the reliability of compressor, prolongs its working life.
A kind of idle call rotary compressor of the present utility model, comprise motor portion and compressor section, compressor section comprises cylinder, upper cylinder cover, following cylinder cap, eccentric shaft, rolling piston and blade, at least have an oil groove on the thrust surface of described cylinder cap down, the inner of described oil groove is from the axis hole place of following cylinder cap, and the distance at its outer end and axis hole center is poor less than piston radius and eccentric shaft throw of eccentric.
Advantage of the present utility model is: use the improved compressor of cylinder cap down that has that the utility model proposes, the lubrication state under can improving effectively between cylinder cap and the eccentric shaft reduces the abrasion between the parts, improves the reliability and the working life of equipment operation.Evidence: use the former two-spool compressor of cylinder cap down, through the continuous running in a week, the thrust surface heavy wear of following cylinder cap, and adopt the two-spool compressor that has the following cylinder cap of oil groove of the present utility model, after turning round continuously, the thrust surface of following cylinder cap does not have noticeable wear; In addition, the rotary compressor that uses former cylinder cap, HFC refrigeration agent down is through long-term running continuously, the thrust surface of following cylinder cap seriously wears away, and use the rotary compressor that on following cylinder cap thrust surface, is added with oil groove of the present utility model, behind long-term life-test, the thrust surface of following cylinder cap does not have obvious abrasion.
The utility model will be further described below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the structural representation of rotary compressor;
Fig. 2 is the projection position graph of a relation of each parts on following cylinder cap in the rotary compressor.
Rotary compressor of the present utility model, structure and existing rotary compressor are basic identical, just on the thrust surface 5A of former cylinder cap 5 down, have an oil groove at least, in the present embodiment, tie up to and have uniform three oil groove 51A, 51B, 51C on the thrust surface 5A, referring to Fig. 2, with the lubrication state between cylinder cap 5 thrust surface 5A under improving and the eccentric shaft 1.Consider fuel feeding and minimizing leakage as far as possible as far as possible, the inner of described oil groove 51 is from the axis hole place of following cylinder cap 5, its outer end and axis hole center O
1Distance L
1Eccentric distance e (e=O less than piston radius R and eccentric shaft 1
1O
2) poor.
Claims (1)
1. idle call rotary compressor, comprise motor portion and compressor section, compressor section comprises cylinder, upper cylinder cover, following cylinder cap, eccentric shaft, rolling piston and blade, it is characterized in that having an oil groove at least on the thrust surface of described down cylinder cap, the inner of described oil groove is from the axis hole place of cylinder cap down, and the distance at its outer end and axis hole center is poor less than piston radius and eccentric shaft throw of eccentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249147 CN2442002Y (en) | 2000-09-08 | 2000-09-08 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249147 CN2442002Y (en) | 2000-09-08 | 2000-09-08 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2442002Y true CN2442002Y (en) | 2001-08-08 |
Family
ID=33607637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249147 Expired - Lifetime CN2442002Y (en) | 2000-09-08 | 2000-09-08 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2442002Y (en) |
-
2000
- 2000-09-08 CN CN 00249147 patent/CN2442002Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100908 Granted publication date: 20010808 |