CN202284544U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN202284544U CN202284544U CN2011202749153U CN201120274915U CN202284544U CN 202284544 U CN202284544 U CN 202284544U CN 2011202749153 U CN2011202749153 U CN 2011202749153U CN 201120274915 U CN201120274915 U CN 201120274915U CN 202284544 U CN202284544 U CN 202284544U
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- steel pipe
- eccentric crankshaft
- rotor
- rotary compressor
- motor rotor
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Abstract
A rotary compressor comprises a motor component and a compression component, wherein the motor component and the compression component are arranged in a closed housing; the motor component is formed by assembling a motor rotor, a motor stator and a balancing weight; an eccentric crankshaft matched with the motor rotor is arranged on the motor rotor; a connecting piece is arranged between the motor rotor and the eccentric crankshaft, so as to form an auxiliary shaft; the connecting piece is a steel pipe; and the steel pipe is in interference fit with the cavity of the motor rotor, and is propped against the eccentric crankshaft. As the connecting piece is additionally arranged between the motor rotor and the eccentric crankshaft to form the auxiliary shaft, the limit on the processing length is improved effectively, the manufacturing technology is simplified, and the manufacturing cost is reduced; as the connecting piece is used for connecting the motor rotor with the auxiliary bearing, and serving a twofold supporting function to the compression component, the defective rate of electromagnetic clearance and the vibration of the compressor are reduced; and the rotary compressor further has the characteristics of simple and reasonable structure, simplicity in assembly, wide application range and long service life, and improves the qualification rate of products.
Description
Technical field
The utility model relates to a kind of compressor, particularly a kind of rotary compressor.
Background technique
Existing rotary compressor is generally cantilever beam structure, and rotor is supported by main bearing.In actual moving process, the swing of Off center axle appears in rotor easily in rotation process.Along with the increase of rotor height, and compressor is in the process of low-frequency operation, and the swing of electronic motor rotor causes that vibration is more obvious.Through above equilibrium block, setting up auxiliary bearing, compression assembly is played the dual support effect can effectively be addressed the above problem.But for some powerful rotary compressors; Because the length overall of eccentric crankshaft exceeds the conventional equipment manufacturing limit; Cause eccentric crankshaft can not be connected, can't realize the dual support effect, and rotor has only the part to be connected with eccentric crankshaft with auxiliary bearing.In actual moving process, the equilibrium block on the rotor can produce centrifugal force F1, between rotor and the motor stator because the existence of non-uniform gap, produce one with centrifugal force F1 electromagnet pull F2 in the same way, see Fig. 4.Because motor rotor core is generally the electromagnetic steel plate lamination and forms; Under centrifugal force F1 and the coefficient situation of electromagnet pull F2; Cause the terminal point of contact A of rotor and eccentric crankshaft distortion to occur; Cause the bump between rotor and the motor easily, and cause the electromagnetism gap bad with phenomenon such as vibration of compressor, cause compressor efficiency to descend.
Chinese patent document number CN101463818A discloses the cooperating structure of a kind of rotary compressor eccentric crankshaft and rotor on June 24th, 2009; Comprise eccentric crankshaft and the rotor that matches with eccentric crankshaft; Eccentric crankshaft is provided with the semicircular eccentric part of an outstanding eccentric crankshaft; This eccentric part is divided into major axis and minor axis with eccentric crankshaft, and the rotor center is provided with the endoporus that matches with eccentric crankshaft, it is characterized in that: on the side face of the major axis of eccentric crankshaft, be provided with several axial planes; The end of major axis is provided with screw thread; The endoporus of rotor is provided with several axial planes that are provided with on the side face with major axis and matches and place the endoporus of rotor, utilizes the screw thread of the end of nut and major axis to screw, and the major axis and the rotor of eccentric crankshaft is fixed together.It is said that it can solve the fixation problem of rotary compressor eccentric crankshaft and rotor, still, this structure has increased the difficulty of manufacturing, improves the cost of product indirectly.Therefore, be necessary to do further improvement and perfect.
The model utility content
The purpose of the utility model aims to provide a kind of simple and reasonable, with low cost, applied widely and be convenient to the rotary compressor of processing, to overcome deficiency of the prior art.
A kind of rotary compressor by this purpose design; Comprise the electric machine assembly and the compression assembly that are arranged in the closed shell; Electric machine assembly was formed by packaged joining of rotor, motor stator and balance; Rotor is provided with eccentric crankshaft with matching, and its structure characteristic is to be provided with link between said rotor and the eccentric crankshaft, forms an auxiliary axis; This link is a steel pipe, and the cavity of steel pipe and rotor is an interference fit, and leans with eccentric crankshaft.
Be provided with oil groove in the said steel pipe, this oil groove is shape in the shape of a spiral; Oil groove is connected with fuel feeding road on the eccentric crankshaft.
Said steel pipe is connected with auxiliary bearing on the compression assembly, and the inwall of the corresponding auxiliary bearing of steel pipe is provided with oil supply hole, and oil supply hole is connected with oil groove; Auxiliary bearing is arranged at the top of equilibrium block; The thickness t of steel pipe is greater than 2mm.
The other end of said eccentric crankshaft is connected with compression assembly; Compression assembly comprises rolling piston and the compression cylinder that links to each other with eccentric crankshaft; Compression cylinder is upper cylinder and lower cylinder, and the top of upper cylinder is provided with main bearing, and the bottom of lower cylinder is provided with supplementary bearing; Be provided with intermediate plate between upper cylinder and the lower cylinder.
The cooperation position of said eccentric crankshaft and main bearing is the main shaft section, and the internal diameter of this main shaft section is D; The internal diameter of steel pipe is d, and the inner diameter d of steel pipe is greater than the inside diameter D of main shaft section, and perhaps the inner diameter d of steel pipe equals the inside diameter D of main shaft section.
Have additional link between rotor of the utility model and the eccentric crankshaft, form an auxiliary axis, effectively improve the restriction on the eccentric crankshaft processing length, simplified manufacturing technique, and reduce manufacture cost; The length of link can be decided according to actual use condition, realizes that through link rotor is connected with auxiliary bearing, and compression assembly is played the dual support effect, reduces electromagnetism gap reject ratio, reduces vibration of compressor; It has simple and reasonable, as to assemble simple, applied widely and long service life characteristics, improves the up-to-standard rate of product simultaneously.
Description of drawings
Fig. 1 is first embodiment master's TV structure schematic representation of the utility model.
Fig. 2 is second embodiment master's TV structure schematic representation.
Fig. 3 is the 3rd embodiment master's TV structure schematic representation.
Fig. 4 is the eccentric crankshaft and the rotor assembling schematic representation of rotary compressor in the existing technology.
Among the figure: 1 is equilibrium block, and 2 is rotor, and 3 is motor stator, and 4 is eccentric crankshaft, and 5 is main bearing, and 6 is upper cylinder, and 7 is intermediate plate, and 8 is lower cylinder, and 9 is supplementary bearing, and 10 is steel pipe, and 10.1 is oil supply hole, and 10.2 is oil groove, and 11 is auxiliary bearing.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 1, this rotary compressor comprises the electric machine assembly and the compression assembly that are arranged in the closed shell, and electric machine assembly is assembled by rotor 2, motor stator 3 and equilibrium block 1, and rotor 2 is provided with eccentric crankshaft 4 with matching.The other end of eccentric crankshaft 4 is connected with compression assembly, and compression assembly is assembled by the rolling piston and the compression cylinder that link to each other with eccentric crankshaft 4, and compression cylinder is upper cylinder 6 and lower cylinder 8.The top of upper cylinder 6 is provided with main bearing 5, is provided with intermediate plate 7 and supplementary bearing 9 between upper cylinder 6 and the lower cylinder 8.Eccentric crankshaft 4 is the main shaft section with the cooperation position of main bearing 5.The internal diameter of this main shaft section is D; The internal diameter of steel pipe 10 is d, and the inner diameter d of steel pipe 10 is greater than the inside diameter D of main shaft section.
Be provided with link between rotor 2 and the eccentric crankshaft 4, form an auxiliary axis, this link is standard pipe fittings such as steel pipe 10, and the length of steel pipe 10 can be decided according to actual use condition.During assembling, earlier rotor 2 is carried out heat treated, be inserted in steel pipe 10 in the cavity of rotor 2, this moment, steel pipe 10 was an interference fit with the cavity of rotor 2, and leant with eccentric crankshaft 4.Increase on the basis of eccentric crankshaft length to satisfy, improve the structural rigidity of rotor 2, avoid the bump between rotor and the motor stator 3, reduce electromagnetism gap reject ratio, the minimizing vibration of compressor at needs not.This structure can make rotor 2 height further increase simultaneously, lets the working efficiency of motor stator 3 further promoted, thereby improves the compressor efficiency.
Second embodiment
Referring to Fig. 2; Said steel pipe 10 is connected with auxiliary bearing 11 on the compression assembly; Auxiliary bearing 11 is arranged at the top of equilibrium block 1; Realize that through steel pipe 10 rotor 2 is connected with auxiliary bearing 11, can reduce manufacture difficulty and manufacture cost, and compression assembly is played the dual support effect.Be provided with oil groove 10.2 in the steel pipe 10, this oil groove 10.2 is shape in the shape of a spiral, and oil groove 10.2 is connected with fuel feeding road on the eccentric crankshaft 4.The inwall of steel pipe 10 corresponding auxiliary bearings 11 is provided with oil supply hole 10.1, and oil supply hole 10.1 is connected with oil groove 10.2, plays lubrication to satisfy between steel pipe 10 and the auxiliary bearing 11 through lubricant oil.Other does not state part with first embodiment.
The 3rd embodiment
Referring to Fig. 3, the inner diameter d of steel pipe 10 equals the inside diameter D of main shaft section, and the thickness t of steel pipe 10 is more than the 2mm, to guarantee the intensity of steel pipe 10.Other does not state part with first embodiment.
Claims (6)
1. rotary compressor; Comprise the electric machine assembly and the compression assembly that are arranged in the closed shell; Electric machine assembly is assembled by rotor (2), motor stator (3) and equilibrium block (1); Rotor (2) is provided with eccentric crankshaft with matching (4), it is characterized in that being provided with link between said rotor (2) and the eccentric crankshaft (4), forms an auxiliary axis; This link is steel pipe (10), and steel pipe (10) is an interference fit with the cavity of rotor (2), and leans with eccentric crankshaft (4).
2. rotary compressor according to claim 1 is characterized in that being provided with oil groove (10.2) in the said steel pipe (10), and this oil groove (10.2) is shape in the shape of a spiral; Oil groove (10.2) is connected with fuel feeding road on the eccentric crankshaft (4).
3. rotary compressor according to claim 1 and 2; It is characterized in that said steel pipe (10) is connected with auxiliary bearing (11) on the compression assembly; The inwall of the corresponding auxiliary bearing of steel pipe (10) (11) is provided with oil supply hole (10.1), and oil supply hole (10.1) is connected with oil groove (10.2); Auxiliary bearing (11) is arranged at the top of equilibrium block (1).
4. rotary compressor according to claim 3, the thickness t that it is characterized in that said steel pipe (10) is greater than 2mm.
5. rotary compressor according to claim 4; The other end that it is characterized in that said eccentric crankshaft (4) is connected with compression assembly; Compression assembly comprises rolling piston and the compression cylinder that links to each other with eccentric crankshaft (4); Compression cylinder is upper cylinder (6) and lower cylinder (8), and the top of upper cylinder (6) is provided with main bearing (5), and the bottom of lower cylinder (8) is provided with supplementary bearing (9); Be provided with intermediate plate (7) between upper cylinder (6) and the lower cylinder (8).
6. rotary compressor according to claim 5 is characterized in that the said eccentric crankshaft (4) and the cooperation position of main bearing (5) are the main shaft section, and the internal diameter of this main shaft section is D; The internal diameter of steel pipe (10) is d, and the inner diameter d of steel pipe (10) is greater than the inside diameter D of main shaft section, and perhaps the inner diameter d of steel pipe (10) equals the inside diameter D of main shaft section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202749153U CN202284544U (en) | 2011-07-30 | 2011-07-30 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202749153U CN202284544U (en) | 2011-07-30 | 2011-07-30 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284544U true CN202284544U (en) | 2012-06-27 |
Family
ID=46296069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202749153U Expired - Fee Related CN202284544U (en) | 2011-07-30 | 2011-07-30 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083923A (en) * | 2017-06-14 | 2018-12-25 | 上海海立电器有限公司 | Crankshaft, rolling rotor-type micro-compressor and refrigeration system |
| CN110685911A (en) * | 2019-09-29 | 2020-01-14 | 安徽美芝精密制造有限公司 | Compressor and refrigeration equipment |
-
2011
- 2011-07-30 CN CN2011202749153U patent/CN202284544U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083923A (en) * | 2017-06-14 | 2018-12-25 | 上海海立电器有限公司 | Crankshaft, rolling rotor-type micro-compressor and refrigeration system |
| CN109083923B (en) * | 2017-06-14 | 2024-03-08 | 上海海立电器有限公司 | Crankshaft, rolling rotor type micro compressor and refrigerating system |
| CN110685911A (en) * | 2019-09-29 | 2020-01-14 | 安徽美芝精密制造有限公司 | Compressor and refrigeration equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20190730 |