CN101713401A - Crank shaft and scroll compressor with same - Google Patents
Crank shaft and scroll compressor with same Download PDFInfo
- Publication number
- CN101713401A CN101713401A CN200810152036A CN200810152036A CN101713401A CN 101713401 A CN101713401 A CN 101713401A CN 200810152036 A CN200810152036 A CN 200810152036A CN 200810152036 A CN200810152036 A CN 200810152036A CN 101713401 A CN101713401 A CN 101713401A
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- bearing portion
- bent axle
- external diameter
- fixing part
- rotor fixing
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Abstract
The invention relates to a crank shaft and a scroll compressor with the same. In the invention, specifications among the outer diameters or the lengths, the eccentric magnitudes, and the like of a first bearing part, a second bearing part, a rotor fixing part, an eccentric part, and the like of the crank shaft are properly analyzed, and after the specifications are renewedly specified, the crank shaft is manufactured so as to improve the productbility and the durability of the crank shaft. Meanwhile, the productbility, the durability and the efficiency of the compressor adopting the crank shaft can also be improved.
Description
Technical field
The present invention relates to be used for rotatablely moving of drive motor be converted to compression mechanical part turning motion bent axle and be provided with the scroll compressor of this bent axle.
Background technique
In general, it is the 2nd motion of follower that bent axle is used for the 1st movement conversion of drive portion, particularly, and under the situation about in compressor, adopting, it will combine with the rotor of drive motor, and rotatablely moving of rotor be converted to the turning motion of compression mechanical part, for this reason, bent axle constitutes long rod shape, combine with at least more than one bearing components, and be supported to radial direction, therefore, bent axle can be divided into: the bearing portion that is incorporated into bearing components; Be pressed into rotor fixing part in rotor; The eccentric part that combines with compression mechanical part off-centre etc.Wherein, for the stable support bent axle, bearing portion is formed with the 1st bearing portion and the 2nd bearing portion respectively in the both sides up and down of rotor fixing part, according to the size of bearing portion and rotor fixing part and eccentric part and length etc., the efficient of compressor and producibility and reliability will be subjected to very big influence.
But, in the bent axle of prior art, make owing to failing the careful process time of considering bearing portion and rotor fixing part and eccentric part and assembly process or kinetic characteristic, to cause the producibility of bent axle to reduce, and, bent axle is being applied under the situation of compressor, will causing reducing the efficient and the reliability of compressor.
Summary of the invention
For the problem that exists in the bent axle that solves aforesaid prior art, the object of the present invention is to provide a kind of bent axle and be provided with the compressor of this bent axle, in the present invention, also stipulate again by the specification that accurate analysis is corresponding with each position of bent axle, the producibility and the reliability of bent axle can be improved, producibility and the reliability and the efficient of the compressor that adopts bent axle can be improved thus.
In order to reach the object of the invention, the bent axle among the present invention, it includes following several sections: the 1st bearing portion; The 2nd bearing portion that at intervals forms with the 1st bearing portion; The rotor fixing part that combines with the rotor of drive motor; For the rotating force with drive motor passes to compression mechanical part, have certain offset with respect to the axle center of the 1st bearing portion or rotor fixing part, and the eccentric part that prolong to form from the 1st bearing portion.Wherein, the external diameter of the 1st bearing portion will greater than 2 times of the offset of the external diameter of eccentric part and eccentric part and.
And for the attainment of one's purpose, according to the compressor among the present invention, it includes following several sections: seal container; Be installed on the drive motor of the inside of seal container; Be installed on a side of drive motor, for the power that receives drive motor and compression refrigerant and be provided with the compression mechanical part of a plurality of spools; Be installed on a plurality of bearing components of seal container; Be supported by bearing components, and be used for the transmission of power of drive motor is given the bent axle of compression mechanical part.Wherein, include in the bent axle: the 1st bearing portion; The 2nd bearing portion that at intervals forms with the 1st bearing portion; The rotor fixing part that combines with the rotor of drive motor; For the rotating force with drive motor passes to compression mechanical part, have certain offset with respect to the axle center of the 1st bearing portion or rotor fixing part, and the eccentric part that prolong to form from the 1st bearing portion.Wherein, the external diameter of the 1st bearing portion will greater than 2 times of the offset of the external diameter of eccentric part and eccentric part and.
Effect of the present invention: the bent axle in according to the present invention and be provided with the scroll compressor of this bent axle, to suitably stipulate the specification corresponding with each position of bent axle, thereby can improve the producibility and the reliability of bent axle, simultaneously, can improve producibility and the reliability and the efficient of the compressor that adopts bent axle.
Description of drawings
Fig. 1 is the stereogram of the bent axle among the present invention;
Fig. 2 is the sectional view of the bent axle among Fig. 1;
Fig. 3 is the sectional view that adopts the scroll compressor of the bent axle among Fig. 1.
The reference numeral explanation:
10: bent axle 10a: the machine oil stream
10b: 11: the 1 bearing portions of machine oil groove
12: the 2 bearing portions 13: rotor fixing part
14: 15: the 1 groove parts of eccentric part
Embodiment
Below, the embodiment in reference to the accompanying drawings is described in detail bent axle among the present invention and the compressor that is provided with this bent axle.
As shown in Figure 1, bent axle 10 among the present invention constitutes the pole shape with set length, and its inside axially connects and forms organic oil stream 10a, in addition, outer circumferential face at bent axle 10 is formed with spiral machine oil groove 10b, and machine oil groove 10b will be communicated with machine oil stream 10a.
As shown in Figures 1 and 2, include following several sections in the bent axle 10: the 1st bearing portion 11 that is formed at the first half; With the 1st bearing portion 11 at intervals, and be formed at the 2nd bearing portion 12 of Lower Half; Be formed at the position between the 1st bearing portion 11 and the 2nd bearing portion 12, and be incorporated into the rotor fixing part 13 of the rotor of drive motor (not shown); For the rotating force with drive motor passes to compression mechanical part (not shown), have certain offset with respect to the axle center of the 1st bearing portion 11 or rotor fixing part 13, and prolong the eccentric part 14 that forms from the 1st bearing portion 11.
As shown in Figure 2, the outer diameter D 1 of the 1st bearing portion 11 greater than 2 times of the offset ε of the outer diameter D 4 of eccentric part 14 and eccentric part 14 and, preferably make the outer diameter D 1 of the 1st bearing portion 11 be not more than the outer diameter D 4 of eccentric part 14 and eccentric part 14 2 times of offset ε and more than 1.2 times, this can prevent that peripheral velocity and mechanical loss on the bearing surface from increasing.
The outer diameter D 3 of rotor fixing part 13 will be less than the outer diameter D 1 of the 1st bearing portion 11, preferably make the outer diameter D 3 of rotor fixing part 13 constitute 70～85% size of the outer diameter D 1 of the 1st bearing portion 11, this will make the efficient of drive motor reduce to reach and minimize, and, can prevent the situation that bent axle 10 deforms in advance.
In addition, the outer diameter D 3 that makes rotor fixing part 13 has identical size with the outer diameter D 2 of the 2nd bearing portion 12 and forms, thus, and can be in rotor fixing part 13 with the rotor transition fit of drive motor, simultaneously, can disposablely carry out the grinding of rotor fixing part 13 and the 2nd bearing portion 12 is operated.
In addition, preferably, between rotor fixing part 13 and the 2nd bearing portion 12, be formed with the 1st groove part 15, the external diameter of the 1st groove part 15 will be less than the outer diameter D 2 of rotor fixing part 13 and the 2nd bearing portion 12, thereby can reduce the position of grinding, but, consider the reliability problem of bent axle 10, the outer diameter D 5 of the 1st groove part 15 preferably has the size more than 85% of the outer diameter D 3 of rotor fixing part 13.
In addition, make the length L 3 of rotor fixing part 13 constitute more than 2 times of length L 1 of the 1st bearing portion 11, thereby can carry out the operation that is pressed into of rotor easily.
As shown in Figure 1, preferably, between the 1st bearing portion 11 and eccentric part 14, be formed with the 2nd groove part 16, the external diameter of the 2nd groove part 16 will be less than the external diameter of eccentric part 14, thereby make form right angle between the 1st bearing portion 11 and the eccentric part 14, and, make the 2nd groove part 16 and eccentric part 14 have identical axle center, thereby can conveniently carry out machining operation, drawing symbol L2 is the length of the 2nd bearing portion.
In addition, as shown in Figure 3, adopt the scroll compressor of the bent axle among aforesaid the present invention, it includes following several sections: seal container 110; Be fixedly installed in a plurality of bearings 120,130 of the inside of seal container 110; Be fixedly installed in the drive motor 140 of the inside of seal container 110; Be used to receive the power of drive motor 140, and refrigerant is carried out compressor for compressing structure portion 150; Be incorporated into the position between the cycle spool 152 of the rotor 142 of drive motor 140 and compression mechanical part 150, and be used for rotatablely moving of drive motor 140 is converted to the bent axle 10 of the turning motion of cycle spool 152.
Wherein, one side of seal container 110 is connected with suction pipe 111, its opposite side is connected with discharge tube 112, suction pipe 111 is according to the kind of compressor, promptly, according to whether being low pressure type or high pressure type and will be communicated in the inner space of seal container 110, still be communicated in the suction side of compression mechanical part 150.
Between a plurality of bearings 120,130, drive motor 140 is set, and, the both sides of drive motor 140 are fixedly installed in the inner peripheral surface of seal container 110, wherein, the main bearing 120 that is installed on the upside of seal container 110 will support the 1st bearing portion 11 of bent axle 10, and the auxiliary bearing 130 that is installed on the downside of seal container 110 supports the 2nd bearing portion 12 of bent axles 10.
The length that is shorter in length than the 1st bearing portion 11 of main bearing 120 and forming is combined with equilibrium block 160 in the 1st bearing portion 11, equilibrium block 160 be used for the cycle spool 152 of attenuate compressor structure portion 150 eccentric in conjunction with and the vibration that produces.
Include in the compression mechanical part 150: be fixedly installed in the cycle spool 152 that main and fixing spool 151 together form continuous pressing chamber D.Fixedly be formed with spiral fixed plate 151a and cycle plate 152a respectively in spool 151 and the cycle spool 152, forming pressing chamber D thereby will be meshing with each other by fixed plate 151a and cycle plate 152a, drawing symbol 141 is stators.
Bent axle 10 is identical with the structure of aforesaid bent axle, so will save its specific description at this.
Below, will the action effect of the scroll compressor that comprises bent axle be described.
At first, in bent axle 10, the outer diameter D 1 of the 1st bearing portion 11 greater than 2 times of the offset ε of the outer diameter D 4 of eccentric part 14 and eccentric part 14 and form, thus, the offset of eccentric part 14 reduces corresponding, this can make bent axle 10 from the downside of main bearing 120 to upside, promptly, insert from drive motor 140 portions of lateral compression mechanism 150 sides, thus, can be behind bent axle 10 with the rotor transition fit, bent axle 10 is inserted in the main bearing 120, usually, under the situation of the offset ε of eccentric part 14 greater than the offset among the present invention, eccentric part 14 will be blocked by main bearing 120, thereby bent axle 10 can't be inserted to upside from downside, thus, need at first in conjunction with behind the bent axle 10 again in conjunction with rotor, thereby cause that required assembly process is corresponding to become complicated.Can solve the problem that exists as mentioned above by the present invention, but, under the excessive situation of the diameter D1 of the 1st bearing portion 11, as previously mentioned, to cause in the operation of compressor, it is big that the peripheral velocity of bearing surface excessively becomes, or the mechanical loss on the bearing surface increases, thereby reduce the efficient of compressor.Therefore, in the present invention, when the shape of bent axle is described as previously mentioned, define suitable outer diameter D 1 size of the 1st bearing portion 11 simultaneously.
In addition, under the excessive situation of the outer diameter D 3 of rotor fixing part 13, the magnetic circuit area of rotor will diminish relatively, thereby will reduce the efficient of drive motor 140.Simultaneously, under the too small situation of the outer diameter D 3 of rotor fixing part 13, when compressor is operated, bent axle 10 may deform.Therefore, will define the suitable diameter D3 size of the rotor fixing part 13 of bent axle 10 among the present invention as previously mentioned.
In addition, when rotor 142 is fixed in bent axle 10, under the situation of outer diameter D 2 greater than the outer diameter D 3 of rotor fixing part 13 of the 2nd bearing portion 12, can't transition fit rotor 142, thereby cause the corresponding increase of required assembly fee, simultaneously, under the situation of outer diameter D 2 less than the outer diameter D 3 of rotor fixing part 13 of the 2nd bearing portion 12, outer diameter D 3, D1, the D2 of the 11, the 2nd bearing portion 12 of rotor fixing part the 13, the 1st bearing portion will have nothing in common with each other, thereby will cause the grinding operation to become complicated, and corresponding increase operating cost.Therefore, in the present invention, process making rotor fixing part 13 and the 2nd bearing portion 12 have identical external diameter (D3=D2) size, simultaneously, between rotor fixing part 13 and the 2nd bearing portion 12, form the 1st less groove part 15 of outer diameter D 5, the difficult problem when thereby the cylindrical part that can solve same diameter when machining crankshafts 10 extends in the contingent processing, wherein, to equilibrium block 160 be had less than the big or small internal diameter of the outer diameter D 3 (D2) of rotor fixing part 13 or the 2nd bearing portion 12, and be incorporated into the 1st bearing portion 11, thereby can solve because the problem that the identical and contingent equilibrium block 160 of external diameter size of rotor fixing part 13 and the 2nd bearing portion 12 is difficult to assemble.
Claims (13)
1. a bent axle is characterized in that, includes following several sections: the 1st bearing portion; The 2nd bearing portion that at intervals forms with above-mentioned the 1st bearing portion; The rotor fixing part that combines with the rotor of drive motor; Axle center with respect to the 1st bearing portion or rotor fixing part has certain offset, and the eccentric part that prolong to form from the 1st bearing portion, wherein, the external diameter of the 1st bearing portion greater than 2 times of the offset of the external diameter of eccentric part and eccentric part and.
2. bent axle according to claim 1 is characterized in that: the external diameter of the 1st bearing portion be not more than the external diameter of eccentric part and offset 2 times and 1.2 times.
3. bent axle according to claim 1 is characterized in that: the external diameter of rotor fixing part will form less than the external diameter of the 1st bearing portion.
4. bent axle according to claim 3 is characterized in that: the external diameter of rotor fixing part will form with 70～85% size of the external diameter of the 1st bearing portion.
5. bent axle according to claim 1 is characterized in that: the external diameter of rotor fixing part will identical formation with the external diameter of the 2nd bearing portion.
6. bent axle according to claim 1 is characterized in that: be formed with groove part between rotor fixing part and the 2nd bearing portion, the external diameter of groove part is less than the external diameter of rotor fixing part or the 2nd bearing portion.
7. bent axle according to claim 6 is characterized in that: the external diameter of groove part has the size more than 85% of the external diameter of rotor fixing part.
8. bent axle according to claim 1 is characterized in that: the length of rotor fixing part is with the formation more than 2 times of the length of above-mentioned the 1st bearing portion.
9. bent axle according to claim 1 is characterized in that: be formed with groove part between the 1st bearing portion and eccentric part, the external diameter of groove part is less than the external diameter of eccentric part.
10. bent axle according to claim 9 is characterized in that: groove part will have the axle center identical with above-mentioned eccentric part and form.
11. a compressor, the present invention is characterized in that, includes following several sections: seal container; Be installed on the drive motor of the inside of seal container; Be installed on a side of drive motor, for the power that receives above-mentioned drive motor and compression refrigerant and be provided with the compression mechanical part of a plurality of spools; Be installed on a plurality of bearing components of above-mentioned seal container; Be supported by bearing components, and be used for the transmission of power of above-mentioned drive motor is given the bent axle of compression mechanical part, wherein, will comprise aforesaid right requirement 1 in the bent axle to claim 10.
12. compressor according to claim 11 is characterized in that: the bearing surface of bearing components that is used to support the 1st bearing portion of bent axle is shorter in length than the length of the 1st bearing portion.
13. compressor according to claim 12 is characterized in that: the 1st bearing portion at bent axle is combined with the equilibrium block that is used for attenuation vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810152036A CN101713401A (en) | 2008-10-07 | 2008-10-07 | Crank shaft and scroll compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810152036A CN101713401A (en) | 2008-10-07 | 2008-10-07 | Crank shaft and scroll compressor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101713401A true CN101713401A (en) | 2010-05-26 |
Family
ID=42417306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810152036A Pending CN101713401A (en) | 2008-10-07 | 2008-10-07 | Crank shaft and scroll compressor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101713401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279958A (en) * | 2017-02-15 | 2021-08-20 | 翰昂汽车零部件有限公司 | Scroll compressor having a discharge port |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082379A (en) * | 1996-09-06 | 1998-03-31 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| JP2002250285A (en) * | 2001-02-23 | 2002-09-06 | Fujitsu General Ltd | Scroll compressor |
| CN1517554A (en) * | 2003-01-21 | 2004-08-04 | ��ʿͨ�����ɷ�����˾ | Vortex compressor |
| CN1601126A (en) * | 2003-09-27 | 2005-03-30 | 乐金电子(天津)电器有限公司 | Crankshaft of rotary compressor |
| KR20050060335A (en) * | 2003-12-16 | 2005-06-22 | 엘지전자 주식회사 | The friction losses decreasing device of eccentric bush for scroll compressor |
| CN200993104Y (en) * | 2006-11-15 | 2007-12-19 | 刘万富 | Crankshaft for scroll compressor |
-
2008
- 2008-10-07 CN CN200810152036A patent/CN101713401A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082379A (en) * | 1996-09-06 | 1998-03-31 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| JP2002250285A (en) * | 2001-02-23 | 2002-09-06 | Fujitsu General Ltd | Scroll compressor |
| CN1517554A (en) * | 2003-01-21 | 2004-08-04 | ��ʿͨ�����ɷ�����˾ | Vortex compressor |
| CN1601126A (en) * | 2003-09-27 | 2005-03-30 | 乐金电子(天津)电器有限公司 | Crankshaft of rotary compressor |
| KR20050060335A (en) * | 2003-12-16 | 2005-06-22 | 엘지전자 주식회사 | The friction losses decreasing device of eccentric bush for scroll compressor |
| CN200993104Y (en) * | 2006-11-15 | 2007-12-19 | 刘万富 | Crankshaft for scroll compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279958A (en) * | 2017-02-15 | 2021-08-20 | 翰昂汽车零部件有限公司 | Scroll compressor having a discharge port |
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Application publication date: 20100526 |