CN2447567Y - Crankshaft with high-rigid connecting shaft for double-cylinder rotary compressor - Google Patents
Crankshaft with high-rigid connecting shaft for double-cylinder rotary compressor Download PDFInfo
- Publication number
- CN2447567Y CN2447567Y CN 00249769 CN00249769U CN2447567Y CN 2447567 Y CN2447567 Y CN 2447567Y CN 00249769 CN00249769 CN 00249769 CN 00249769 U CN00249769 U CN 00249769U CN 2447567 Y CN2447567 Y CN 2447567Y
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- CN
- China
- Prior art keywords
- connecting shaft
- rotary compressor
- shape
- crankshaft
- axle
- 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 relates to a crankshaft with a high-rigid connecting shaft for a double-cylinder rotary compressor, which comprises a main shaft neck penetrating through upper and lower cylinder heads of a pump body, upper and lower eccentric crank pins which are respectively provided adjacently with the main shaft neck, and a connecting shaft which is supported on a middle plate of the pump body and is used for connecting the two crank pins. The utility model is characterized in that the shape of the cross section of the connecting shaft is an eye shape or an oval shape the transverse shaft diameter of which is larger than the vertical shaft diameter. With the structure of the connecting shaft, the partial rigidity of the connecting shaft of the crankshaft is enhanced, the deformation of the connecting shaft is reduced when the crankshaft is subjected to large acting force, and the abnormal abrasion of the pump body part is avoided.
Description
The utility model relates to two-cylinder rotary compressor, specifically, relates to the bent axle of two-cylinder rotary compressor.
Air condition compressor bent axle in operation process will be subjected to the effect of gas force, inertial force and electromagnetic force usually, in above-mentioned power especially under the effect of the suffered great gas load of compression chamber exhaust moment bent axle, the coupling shaft that connects eccentric crank pin will occur bending and deformation, cause originally the plane of rotation at the piston of horizontal plane rotation to tilt, the edge that causes piston produces with the cylinder cap up and down of pump housing part and intermediate plate and weares and teares.Therefore, the rigidity that how to improve the coupling shaft of two traditional eccentric crank pins just becomes a major issue that needs to be resolved hurrily.
Therefore, the purpose of this utility model provides a kind of bent axle that is used for the eccentric crank pin coupling shaft with high rigidity of two-cylinder rotary compressor, to effectively reduce the bending deflection when the compressor operation process is subjected to huge gas load.
For achieving the above object, the bent axle that is used for the high rigidity eccentric crank pin of having of two-cylinder rotary compressor coupling shaft of the present utility model comprises: be located in main journal on the cylinder cap up and down of the pump housing, respectively with the eccentric up and down crank pin of the adjacent layout of described main journal and be bearing in the coupling shaft that is connected described two crank pins on the pump housing intermediate plate; Be characterized in that the shape of cross section of described coupling shaft is that lateral shaft is greater than vertical axle.Described shape of cross section is eye shape or ellipse.
Because the shape of the coupling shaft of bent axle is changed into the shape of lateral shaft greater than vertical axle by original circular cross section, as eye shape or ellipse, thereby improved the local stiffness of the coupling shaft of bent axle,, therefore avoided the inordinate wear of pump housing part to have reduced the bending deflection of coupling shaft.
Specify the bent axle of the two-cylinder rotary compressor of the utility model one preferred embodiment below with reference to accompanying drawings, so that clearlyer understand the purpose of this utility model, characteristics and advantage.
Fig. 1 is the schematic representation of crankshaft installed in the pump housing of the two-cylinder rotary compressor of the utility model one preferred embodiment;
Fig. 2 is the stereogram of Fig. 1 embodiment's bent axle;
Fig. 3 is the sectional view of being got along A-A line among Fig. 2.
Fig. 2 illustrates the bent axle that is used for the high rigidity eccentric crank pin of having of two-cylinder rotary compressor coupling shaft of the utility model one preferred embodiment.As illustrated in fig. 1 and 2, bent axle 10 of the present utility model comprises: be located in respectively the pump housing up and down the main journal 3 and 4 on the cylinder cap 1 and 2, respectively with the eccentric up and down crank pin 5 of the adjacent layout of described main journal and 6 and be bearing in the coupling shaft 8 that is connected described two crank pins 5,6 on the pump housing intermediate plate 7; Be characterized in, the cross section of coupling shaft be shaped as horizontal diameter of axle D greater than vertical diameter of axle d, promptly be a shape, as shown in Figure 3, perhaps shape such as ellipse, thus improve the rigidity of coupling shaft, be subjected to the bending deflection that produced behind the active force to reduce bent axle.As shown in Figure 1, when gas load F acts on the bent axle, because the coupling shaft rigidity is bigger, counter-bending deformation ability improves, therefore, plane of rotation at the piston 9 of horizontal plane rotation tilts to reduce greatly, thus the edge that reduces piston 9 and the pump housing cylinder cap up and down 1,2 partly and the wearing and tearing of 7 of intermediate plates.
The claimant is used for double-cylinder compressor with bent axle of the present utility model and tests through real-world operation.Test result shows, compares with the bent axle with circular cross section coupling shaft of same size, greatly reduces the distortion of coupling shaft, has avoided the heavy wear of piston end surface.
Claims (3)
- One kind be used for two-cylinder rotary compressor have a be rigidly connected bent axle of axle of height, it comprises: be located in main journal on the cylinder cap up and down of the pump housing, respectively with the eccentric crank pin up and down of the adjacent layout of described main journal and be bearing in the coupling shaft that is connected described two crank pins on the pump housing intermediate plate; It is characterized in that the shape of cross section of described coupling shaft is that its horizontal diameter of axle is greater than the vertical diameter of axle.
- 2. as claimed in claim 1 be used for two-cylinder rotary compressor have a be rigidly connected bent axle of axle of height, it is characterized in that the shape of cross section of described coupling shaft be shape.
- 3. as claimed in claim 1 be used for two-cylinder rotary compressor have height be rigidly connected the axle bent axle, it is characterized in that, the shape of cross section of described coupling shaft be the ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249769 CN2447567Y (en) | 2000-10-24 | 2000-10-24 | Crankshaft with high-rigid connecting shaft for double-cylinder rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249769 CN2447567Y (en) | 2000-10-24 | 2000-10-24 | Crankshaft with high-rigid connecting shaft for double-cylinder rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2447567Y true CN2447567Y (en) | 2001-09-12 |
Family
ID=33608137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249769 Expired - Lifetime CN2447567Y (en) | 2000-10-24 | 2000-10-24 | Crankshaft with high-rigid connecting shaft for double-cylinder rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2447567Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032328A (en) * | 2011-09-30 | 2013-04-10 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary type compressor |
| CN103089631A (en) * | 2011-10-31 | 2013-05-08 | 三菱电机株式会社 | Rotary compressor |
| CN105864046A (en) * | 2016-04-13 | 2016-08-17 | 广东美芝制冷设备有限公司 | Crankshaft for compressor and compressor with same |
| CN106286570A (en) * | 2016-09-27 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of bent axle and rotor-type compressor |
-
2000
- 2000-10-24 CN CN 00249769 patent/CN2447567Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032328A (en) * | 2011-09-30 | 2013-04-10 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary type compressor |
| CN103032328B (en) * | 2011-09-30 | 2016-02-17 | 广东美芝制冷设备有限公司 | The rotary compressor of multi cylinder |
| CN103089631A (en) * | 2011-10-31 | 2013-05-08 | 三菱电机株式会社 | Rotary compressor |
| CN103089631B (en) * | 2011-10-31 | 2015-09-30 | 三菱电机株式会社 | Rotary compressor |
| CN105864046A (en) * | 2016-04-13 | 2016-08-17 | 广东美芝制冷设备有限公司 | Crankshaft for compressor and compressor with same |
| CN105864046B (en) * | 2016-04-13 | 2019-03-08 | 广东美芝制冷设备有限公司 | Crankshaft for compressor and the compressor with it |
| CN106286570A (en) * | 2016-09-27 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of bent axle and rotor-type compressor |
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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: 20101024 Granted publication date: 20010912 |