CN100398831C - Cylinder fixing arrangement for double cylinder rotary type compressor - Google Patents
Cylinder fixing arrangement for double cylinder rotary type compressor Download PDFInfo
- Publication number
- CN100398831C CN100398831C CNB2003101178728A CN200310117872A CN100398831C CN 100398831 C CN100398831 C CN 100398831C CN B2003101178728 A CNB2003101178728 A CN B2003101178728A CN 200310117872 A CN200310117872 A CN 200310117872A CN 100398831 C CN100398831 C CN 100398831C
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- cylinder
- fixed groove
- lug boss
- compressor
- rotary compressor
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Abstract
The present invention discloses a cylinder fixing structure for a double-cylinder rotary compressor, which comprises an annular fixed groove and an annular fixed lug boss, wherein the annular fixed groove is formed on the circumferential surface of a middle shaft bearing plate, the annular fixed lug boss is arranged on the inner circumferential surface of a casing corresponding to the fixed groove of the middle shaft bearing plate, the shape of the fixed lug boss corresponds to that of the fixed groove, and the fixed lug boss is inserted in the fixed groove to form tight fit. The cylinder fixing structure has the advantages of simple structure and firm fixation, a cylinder assembly is fixed to the casing of the compressor by the middle shaft bearing plate, and the vibration and the noise of the compressor can be reduced.
Description
Technical field
The present invention relates to a kind of compressor, particularly relate to a kind of cylinder fixing structure of two-cylinder rotary compressor.
Background technique
Rotary compressor is widely used in various refrigerators and air conditioner, and its effect is the low pressure gaseous coolant that sucks through evaporator evaporation, it is compressed into the high-pressure gaseous refrigerant of rated pressure, then with the work system of high-pressure gaseous coolant discharging to refrigerant.The characteristics of rotary compressor be can be continuously to refrigerant suck, compression and discharging operation.
Rotary compressor can be divided into two types of single cylinder rotary compressor and two-cylinder rotary compressors.As its name suggests, single cylinder rotary compressor only contains a cylinder, and cylinder comprises: cylinder body, bent axle, roll ring, dividing plate, upper bearing (metal) plate and lower shaft board; Described bent axle is arranged on cylinder interior, and the two ends of bent axle are respectively by upper bearing (metal) plate and the supporting of lower shaft board; The described ring that rolls is arranged on the outer circumferential face of bent axle; Be formed with inlet hole and septalium on the described cylinder body, be provided with spring in the septalium; One end of described dividing plate is arranged on the spring upper end in the septalium, and the other end is pressed on the outer circumferential face that rolls ring; Described upper bearing (metal) plate, lower shaft board and cylinder body are formed a sealed hollow, and the upper bearing (metal) plate is provided with exhaust port; Described bent axle is connected with the arbor of drive motor.
After the compressor energising starts, drive motor begins rotation, driving bent axle rotates in cylinder with rolling to encircle simultaneously, dividing plate and roll ring cylinder inner cavity is divided into air aspiration cavity and compression chamber, in rotary course, the low pressure gaseous coolant is inhaled into from inlet hole, be compressed into the high-pressure gaseous refrigerant after, discharge from relief opening.
The shortcoming of above-mentioned single cylinder rotary compressor is: the fluctuation of eccentric mass that exists on the structure and compression moment, increase along with air displacement, its vibration is also significantly risen, therefore for air conditioner, especially big specification air conditioner, single cylinder rotary compressor can produce bigger vibration and noise when operation.
In order to overcome the shortcoming of above-mentioned single cylinder rotary compressor, two-cylinder rotary compressor has appearred in recent years, two-cylinder rotary compressor is basic identical with single cylinder rotary compressor on structural principle, the difference of the two only is: be provided with an axis board at the cylinder body middle part, the axis board is divided into upper and lower two cavitys with cylinder inner cavity, be respectively arranged with a cover bent axle in these two cavitys, roll ring and diaphragm structure, and the bending direction of upper and lower bent axle becomes 180 degree angles.The advantage of this two-cylinder rotary compressor is: the fluctuation of eccentric mass when overcoming compressor operating and compression moment greatly reduces vibration and noise.
Fig. 1 shows a kind of cylinder fixing structure of existing two-cylinder rotary compressor.As shown in Figure 1, the outer peripheral surface of upper bearing (metal) plate 011 is weldingly fixed on the inner peripheral surface of casing 022, does not have fixed relationship between axis board 040 and lower shaft board 055 and the casing 022.
The shortcoming of the cylinder fixing structure of above-mentioned existing two-cylinder rotary compressor is: because the quality of compresser cylinder is bigger, the entire cylinder assembly only depends on upper bearing (metal) plate 011 topmost to fix by welding, bigger vibration can take place in the cylinder assembly bottom in compressor operating, cause the welding part between the inner peripheral surface of the outer peripheral surface of upper bearing (metal) plate 011 and casing 022 to throw off, make compressor catastrophe failure occur.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above-mentioned two-cylinder rotary compressor, and a kind of cylinder fixing structure of two-cylinder rotary compressor of simple in structure, fixation is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the cylinder fixing structure of two-cylinder rotary compressor of the present invention comprises: the fixed groove that is formed with an annular on the outer peripheral surface of axis board, position corresponding to the fixed groove on the axis board on the inner peripheral surface of casing is provided with an annular fixing lug boss, the shape and the fixed groove of described fixing lug boss adapt, and fixing lug boss is inserted in the fixed groove and formed drive fit.
The invention has the beneficial effects as follows: simple in structure, fixation; By firm and hard existing the fixing of middle (center) bearing, can reduce the vibration and the noise of compressor between cylinder assembly and the compressor case.
Description of drawings
Fig. 1 is the schematic representation of the cylinder fixing structure of existing two-cylinder rotary compressor;
Fig. 2 is the schematic representation of the cylinder fixing structure of two-cylinder rotary compressor of the present invention.
Among the figure:
011: upper bearing (metal) plate 022: casing
033: cylinder body 044: the axis board
055: lower shaft board 066: fixing lug boss
077: fixed groove
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 2, the cylinder fixing structure of two-cylinder rotary compressor of the present invention comprises: the fixed groove 077 that is formed with an annular on the outer peripheral surface of axis board 044, position corresponding to the fixed groove on the axis board 044 077 on the inner peripheral surface of casing 022 is provided with an annular fixing lug boss 066, the shape of described fixing lug boss 066 and fixed groove 077 adapt, and fixing lug boss 066 is inserted in the fixed groove 077 and formed drive fit.
The cylinder fixing structure of two-cylinder rotary compressor of the present invention is to realize that by the fixing lug boss 066 on fixed groove on the axis board 044 077 and the casing 022 cylinder is fixing, and fixation between the two can not thrown off during compressor operating; And because the height of C.G. of fixed position and cylinder is identical substantially, so during compressor operating, the vibration of cylinder can reduce greatly, the vibration that causes because of vibration also reduces greatly.
Claims (1)
1. the cylinder fixing structure of a two-cylinder rotary compressor, it is characterized in that: the fixed groove (077) that is formed with an annular on the outer peripheral surface of axis board (044), position corresponding to the fixed groove (077) on the axis board (044) on the inner peripheral surface of casing (022) is provided with an annular fixing lug boss (066), the shape of described fixing lug boss (066) and fixed groove (077) adapt, fixing lug boss (066) is inserted in the fixed groove (077) and is formed drive fit, and the height of C.G. of its fixed position and cylinder is identical substantially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101178728A CN100398831C (en) | 2003-12-23 | 2003-12-23 | Cylinder fixing arrangement for double cylinder rotary type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101178728A CN100398831C (en) | 2003-12-23 | 2003-12-23 | Cylinder fixing arrangement for double cylinder rotary type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632315A CN1632315A (en) | 2005-06-29 |
| CN100398831C true CN100398831C (en) | 2008-07-02 |
Family
ID=34843756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101178728A Expired - Fee Related CN100398831C (en) | 2003-12-23 | 2003-12-23 | Cylinder fixing arrangement for double cylinder rotary type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100398831C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047861A (en) * | 2014-06-03 | 2014-09-17 | 广东美芝精密制造有限公司 | Rotary compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140806A (en) * | 1995-05-04 | 1997-01-22 | 运载器有限公司 | Twin cylinder rotary compressor |
| US6447274B1 (en) * | 1999-11-04 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Rotary compressor having a cylinder block of sintered metal |
| CN1451864A (en) * | 2002-04-16 | 2003-10-29 | 上海日立电器有限公司 | Double-cylinder rotary compressor eccentrically assembling method |
-
2003
- 2003-12-23 CN CNB2003101178728A patent/CN100398831C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1140806A (en) * | 1995-05-04 | 1997-01-22 | 运载器有限公司 | Twin cylinder rotary compressor |
| US6447274B1 (en) * | 1999-11-04 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Rotary compressor having a cylinder block of sintered metal |
| CN1451864A (en) * | 2002-04-16 | 2003-10-29 | 上海日立电器有限公司 | Double-cylinder rotary compressor eccentrically assembling method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047861A (en) * | 2014-06-03 | 2014-09-17 | 广东美芝精密制造有限公司 | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1632315A (en) | 2005-06-29 |
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| CF01 | Termination of patent right due to non-payment of annual fee |