CN203146275U - Crank shaft for frequency-changing refrigerator compressor - Google Patents
Crank shaft for frequency-changing refrigerator compressor Download PDFInfo
- Publication number
- CN203146275U CN203146275U CN 201320106389 CN201320106389U CN203146275U CN 203146275 U CN203146275 U CN 203146275U CN 201320106389 CN201320106389 CN 201320106389 CN 201320106389 U CN201320106389 U CN 201320106389U CN 203146275 U CN203146275 U CN 203146275U
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- CN
- China
- Prior art keywords
- crank shaft
- rotor
- bent axle
- shaft body
- step surface
- 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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Abstract
The utility model relates to a crank shaft for a frequency-changing refrigerator compressor and belongs to the technical field of refrigeration compressor fittings. The crank shaft for the frequency-changing refrigerator compressor consists of a crank shaft body, a step surface, a positioning plane and a screwed fixing hole, wherein the step surface and the positioning plane are formed on a main shaft on the upper part of the crank shaft body; and the screwed fixing hole is formed in the upper end part of the crank shaft body. The step surface and the positioning plane are formed on the main shaft of the crank shaft body, and smaller clearance fitting is adopted between the outline size of the crank shaft and an inner hole of a rotor, so that the rotor can be precisely positioned. The screwed fixing hole is formed in the tail part of the main shaft of the crank shaft body, and the rotor is compressed and fixed by a screw, so that the assembling process is simple. The crank shaft body is formed by casting gray pig iron or spheroidal graphite cast iron and mechanically machining the gray pig iron or spheroidal graphite cast iron, so that the production process is simple, and the problem that the rotor is easily demagnetized when the current crank shaft and the motor rotor are assembled by a hot shrinkage process is solved.
Description
Technical field
The utility model relates to a kind of bent axle for the frequency conversion refrigerator compressor, belongs to refrigeration compressor accessory technical field.
Background technique
Employed frequency-changeable compressor on the refrigerator is full-closed structure, and synchronous machine, bent axle and rotor adopt the drive fit structure.But existing rotor and the drive fit of bent axle adopt hot cover process to finish, and rotor is prone to demagnetization, in order to reach the technical requirements of rotor, magnetize will in subsequent handling rotor again, and equipment, technology is more complicated all; In order to solve the problem that rotor and bent axle hot cover process rotor are prone to demagnetization, also have and adopt cold-press process to finish rotor and bent axle, but this technology easily produces iron filings, causes the rate of rolling off the production line higher, and the overall performance of compressor is descended.
Summary of the invention
The purpose of this utility model is: a kind of problem that overcomes in above-mentioned rotor and the bent axle assembling is provided, employing is provided with plane of orientation and fixed hole at the main end of bent axle, adopt less clearance to cooperate between bent axle and rotor inner hole, the main shaft afterbody adopts screw that rotor is fixed, and assembly technology simply is used for the bent axle of frequency conversion refrigerator compressor.
The utility model is to realize above-mentioned purpose by following technical solution:
A kind of bent axle for the frequency conversion refrigerator compressor, it is made up of bent axle body, step surface, plane of orientation and screw thread fixed hole, it is characterized in that: be manufactured with a step surface and a plane of orientation on the bent axle upper part of body main shaft, the upper end portion of bent axle body is manufactured with a screw thread fixed hole.
The utility model compared with prior art has following beneficial effect:
1, the utility model arranges step surface and plane of orientation at the main shaft of bent axle body, adopts less clearance to cooperate between its boundary dimension and rotor inner hole, is beneficial to the accurate location of rotor.
2, the main shaft afterbody of bent axle body is provided with the screw thread fixed hole, adopts screw that rotor is fixed, and assembly technology is simple.
3, bent axle body of the present utility model adopts gray cast iron or spheroidal graphite cast iron casting, and through the machining moulding, production technology is simple.
Description of drawings:
Fig. 1 is a kind of plan view of the bent axle for the frequency conversion refrigerator compressor.
Fig. 2 is a kind of plan view of the bent axle for the frequency conversion refrigerator compressor.
Fig. 3 is a kind of stereogram of the bent axle for the frequency conversion refrigerator compressor.
Among the figure: 1, bent axle body, 2, step surface, 3, plane of orientation, 4, the screw thread fixed hole.
Embodiment:
The bent axle that should be used for the frequency conversion refrigerator compressor is made of bent axle body 1, step surface 2, plane of orientation 3 and screw thread fixed hole 4.Be manufactured with a step surface 2 and a plane of orientation 3 on the upper spindle of bent axle body 1, the upper end portion of bent axle body 1 is manufactured with a screw thread fixed hole 4.
In the time of should being used for the bent axle assembling of frequency conversion refrigerator compressor, driven by motor bent axle body 1, bent axle body 1 drives compressed refrigerant in the piston hole of piston at foundation mass through connecting rod, discharge compressor through the closed gas that produces High Temperature High Pressure of valve group inlet and outlet valve block, the overall noise of refrigerator is reduced, after the refrigeration system circulation, get back in the compressor then, form the compression cycle of refrigeration agent.Because the main shaft afterbody of bent axle body 1 is provided with screw thread fixed hole 4, adopt screw that rotor is fixed, assembly technology is simple.Adopt less clearance to cooperate between its boundary dimension and rotor inner hole, be beneficial to the accurate location of rotor.
The above is the embodiment of this model utility, above-mentioned not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field can make an amendment or is out of shape after having read this specification above-mentioned embodiment, and does not deviate from essence of the present utility model and scope.
Claims (1)
1. bent axle that is used for the frequency conversion refrigerator compressor, it is made up of bent axle body (1), step surface (2), plane of orientation (3) and screw thread fixed hole (4), it is characterized in that: be manufactured with a step surface (2) and a plane of orientation (3) on the upper spindle of bent axle body (1), the upper end portion of bent axle body (1) is manufactured with a screw thread fixed hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106389 CN203146275U (en) | 2013-03-08 | 2013-03-08 | Crank shaft for frequency-changing refrigerator compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106389 CN203146275U (en) | 2013-03-08 | 2013-03-08 | Crank shaft for frequency-changing refrigerator compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146275U true CN203146275U (en) | 2013-08-21 |
Family
ID=48973806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320106389 Expired - Lifetime CN203146275U (en) | 2013-03-08 | 2013-03-08 | Crank shaft for frequency-changing refrigerator compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146275U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050614A (en) * | 2016-08-01 | 2016-10-26 | 珠海凌达压缩机有限公司 | Compressor |
| CN106593876A (en) * | 2017-01-13 | 2017-04-26 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
| CN106895069A (en) * | 2015-12-18 | 2017-06-27 | 珠海凌达压缩机有限公司 | Bent axle and rotary compressor |
-
2013
- 2013-03-08 CN CN 201320106389 patent/CN203146275U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895069A (en) * | 2015-12-18 | 2017-06-27 | 珠海凌达压缩机有限公司 | Bent axle and rotary compressor |
| CN106050614A (en) * | 2016-08-01 | 2016-10-26 | 珠海凌达压缩机有限公司 | Compressor |
| CN106593876A (en) * | 2017-01-13 | 2017-04-26 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
| CN106593876B (en) * | 2017-01-13 | 2018-11-23 | 珠海格力电器股份有限公司 | A kind of crankshaft and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |