CN102797680A - Eccentric variable crankshaft and rotary compressor using same - Google Patents
Eccentric variable crankshaft and rotary compressor using same Download PDFInfo
- Publication number
- CN102797680A CN102797680A CN2012102290118A CN201210229011A CN102797680A CN 102797680 A CN102797680 A CN 102797680A CN 2012102290118 A CN2012102290118 A CN 2012102290118A CN 201210229011 A CN201210229011 A CN 201210229011A CN 102797680 A CN102797680 A CN 102797680A
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- eccentric
- bent axle
- eccentric shaft
- shaft
- opening
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- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The invention discloses an eccentric variable crankshaft, which consists of a long shaft section, an eccentric circle section and a short shaft section, wherein the eccentric circle section comprises an eccentric shaft and an eccentric sleeve, two sides of the eccentric shaft are arranged in parallel, and the eccentric shaft, the long shaft section and the short shaft section are integrally and coaxially processed and formed and are eccentrically arranged on one side, an eccentric hole is formed in the center of the eccentric sleeve, and the eccentric sleeve is sleeved on the eccentric shaft through the eccentric hole in the center and can radially displace relative to the eccentric shaft; and an elastic part in a compressed state is arranged between the corresponding end of the eccentric shaft and the inner wall of the eccentric hole of the eccentric sleeve, and the elastic part enables the inner wall of the other side of the eccentric hole of the eccentric sleeve to be abutted against the eccentric end of the eccentric shaft. The invention also discloses a rotary compressor, and the crankshaft of the compressor uses the crankshaft with variable eccentricity.
Description
[technical field]
The present invention relates to the bent axle of compressor, relate in particular to the variable bent axle of a kind of offset and use the rotary compressor of this bent axle.
[background technique]
Present rotary compressor, as shown in Figure 1, the eccentric circle section a of bent axle and long and short shaft part (b, c) they are one, the eccentric circle section a outside of bent axle puts roller, in cylinder, rotates, and separates the high and low pressure chamber, and compresses.The bent axle of this structure requires machining accuracy high, can not reprocess after eccentric circle section a machines; During use, possibly cause stall when getting into impurity in the cylinder body of cylinder; And the electric current that needs when starting is big, bigger phenomenon when low frequency turns round, can occur vibrating.
[summary of the invention]
It is a kind of easy to process reliable that the present invention provides; Offset adaptivity variable; The high and low pressure chamber is progressively separated; Load rises gradually, compressor operating is more stable, reduces eccentric precision processing request simultaneously, promote opposing impurity ability, have certain adaptivity and can effectively improve the variable bent axle of offset of bent axle work efficiency and use the rotary compressor of this bent axle.
In order to realize the foregoing invention purpose, the technological scheme that the present invention adopts is:
The variable bent axle of a kind of offset; This bent axle is made up of major axis section, eccentric circle section and minor axis section; Said eccentric circle section comprises eccentric shaft and eccentric bushing; Said eccentric shaft both sides laterally arrange and with said major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside, the center of said eccentric bushing offers eccentric opening, the eccentric opening of eccentric bushing through the center be socketed on the eccentric shaft and relatively eccentric shaft do the radial direction displacement; Be provided with the elastic component that is compressive state between the eccentric opening inwall of the corresponding end of said eccentric shaft eccentric end and eccentric bushing, said elastic component makes the eccentric end of eccentric bushing center eccentric opening opposite side inwall and eccentric shaft conflict.
Said eccentric shaft is square eccentric shaft, with the eccentric opening at the eccentric bushing center of eccentric shaft socket be square opening.
Offer at least one gas that arranges when being used to receive eccentric shaft and eccentric bushing relative movement or the groove of impurity on the eccentric end face of said eccentric shaft.
Said eccentric shaft offers the dovetail groove of being convenient to fixedly to hold said elastic component and increasing the eccentric bushing offset, offers the caulking groove that limits said elastic component on the corresponding eccentric bushing eccentric opening inwall; Two inclined-planes mainly limit the displacement of elastic component on the bent axle Vertical direction on the dovetail groove, and the caulking groove on the eccentric bushing eccentric opening inwall mainly limits elastic component displacement in the horizontal direction.
Said elastic component is a pressure spring.
The lower end at corresponding eccentric opening inwall caulking groove place offers and is convenient to the opening slot that elastic component is installed on the said eccentric bushing, also is provided with on the dovetail groove of corresponding eccentric shaft and is convenient to the opening end that elastic component is installed.
Offer on the axial direction of said bent axle radial disbalance part and connect major axis section, eccentric shaft and minor axis section and the oily eccentric oil duct of straight line shape of centrifugal force pump capable of using when bent axle rotates.
A kind of rotary compressor; This compressor comprises housing; That housing comprises is simplified, loam cake and lower cover, and electric machine assembly and compressor assembly are installed in housing, and electric machine assembly is made up of stator, rotor and bent axle; Compressor assembly is made up of cylinder, upper bearing (metal) and lower bearing, and the bent axle of this compressor uses the above-mentioned variable bent axle of offset.
The invention has the beneficial effects as follows:
The present invention's eccentric circle section of bent axle originally is divided into eccentric shaft and two parts of eccentric bushing; Be equipped with the pressure spring assembling between the two; Eccentric bushing is socketed on the eccentric shaft through the eccentric opening at center, and said eccentric shaft both sides laterally arrange and with said major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside, in the practical implementation; Eccentric shaft is square eccentric shaft; With the eccentric opening at the eccentric bushing center of eccentric shaft socket be square opening, so eccentric bushing relatively eccentric shaft do the radial direction displacement, active force and centrifugal force that pressure spring is produced are opposite; Through the pressure spring of design suitable elasticity, when compressor is higher than certain frequency of okperation, because there is the initial eccentricity distance in eccentric shaft; Eccentric bushing is under centrifugal action, and radially outward progressively increases along with rotating speed increases offset; Pressure spring constantly shrinks; When pressure spring was compressed to limit position, the offset of eccentric bushing was required displacement value on the bent axle, reaches normal operating condition.Compressor adopts the variable bent axle of offset, mainly contains following advantage:
A, can be the same with the bent axle of the compressor of a series of different displacements with eccentric bushing, improve versatility, be convenient to mass production;
B, compressor are when starting and be lower than the certain frequency running, and the high and low pressure chamber communicates, and the pump housing load of compressor is little, and inrush current is little, vibration is little;
C, to frequency-changeable compressor, need not to reach very low frequency and also can realize not shutting down low-power running;
When in d, the pump housing hard impurity being arranged, because the existence of pressure spring, eccentric bushing can resilience, stall can not occur, improves Security.
Simultaneously, offer two grooves on the eccentric end face of eccentric shaft, the gas or the impurity that arrange when being used to receive eccentric shaft and eccentric bushing relative movement.Offer the eccentric oil duct of the straight line shape that connects major axis section, eccentric shaft and minor axis section on the axial direction of bent axle radial disbalance part; During use; Utilize the low pressure area of bent axle tail end direction with the fan formation of rotor rotation; Under differential pressure action, the centrifugal force pump of eccentric oil duct capable of using oil when bent axle rotates, refrigeration oil is sucted; Or the minor axis section of lengthening bent axle, the Oil Guide sheet is installed within it, the centrifugal force pump oil of eccentric oil duct solves the oil suction problem when also utilizing bent axle to rotate.
[description of drawings]
Fig. 1 is the structural representation of bent axle in the existing technology;
Fig. 2 is the structural representation that bent axle has broken section among the present invention;
Fig. 3 is the cross section amplification assumption diagram of A-A among Fig. 2;
Fig. 4 is the cross section amplification assumption diagram of B-B among Fig. 2;
Fig. 5 is the cross section amplification assumption diagram of eccentric bushing when centrifugal action lower compression to limit position among Fig. 4;
Fig. 6 is the cross section amplification assumption diagram of eccentric bushing among Fig. 3;
Fig. 7 is the stereo amplification figure of facing of eccentric bushing;
Fig. 8 is the rear perspective enlarged view of eccentric bushing;
Fig. 9 is the main TV structure figure of major axis section, eccentric shaft and the minor axis section of one in the bent axle;
Figure 10 is the three-dimensional structure diagram of major axis section, eccentric shaft and the minor axis section of one in the bent axle;
Figure 11 is the main TV structure schematic representation of bent axle;
Figure 12 is the perspective view of bent axle.
[embodiment]
The variable bent axle of a kind of offset; Extremely shown in Figure 12 like Fig. 2; This bent axle is made up of major axis section 1, eccentric circle section 2 and minor axis section 3; Said eccentric circle section 2 comprises eccentric shaft 4 and eccentric bushing 5, and said eccentric shaft 4 both sides laterally arrange and shape and be provided with in one of which side off-centre with minor axis section 3 one are coaxial with said eccentric shaft 4 and said major axis section 2, make eccentric shaft have the initial eccentricity distance; Offer eccentric opening 50 at the center of eccentric bushing 5, the eccentric opening 50 of eccentric bushing 5 through the center be socketed on the eccentric shaft 4 and relatively eccentric shaft 4 do the radial direction displacement, make the offset of this bent axle according to the size variation of centrifugal force; Between eccentric opening 50 inwalls of the corresponding end 41 of eccentric shaft 4 eccentric end 40 and eccentric bushing 5, be provided with the elastic component 6 that is compressive state; Elastic component described in the enforcement is pressure spring (the following stated pressure spring all refers to elastic component), and pressure spring 6 makes that the eccentric end 40 of eccentric bushing 5 center eccentric openings, 50 opposite side inwalls and eccentric shaft 4 is inconsistent.
Continue as Fig. 2 to shown in Figure 12, on eccentric shaft 4, offer and be convenient to the dovetail groove 7 that fixedly holds pressure spring 6 and increase eccentric bushing 5 offsets, offer the caulking groove 8 of qualification pressure spring 6 on eccentric bushing 5 eccentric openings 50 inwalls of correspondence; Two inclined-planes mainly limit the displacement of pressure spring 6 on the bent axle Vertical direction on the dovetail groove 7, caulking groove 8 main qualification pressure spring 6 displacements in the horizontal direction on eccentric bushing 5 eccentric openings 50 inwalls.
Shown in figure 10, also offer two gases that arrange when being used to receive eccentric shaft 4 or the groove 9 of impurity on the end face of the eccentric end 40 of eccentric shaft 4 with eccentric bushing 5 relative movement; When in the pump housing hard impurity being arranged, because the existence of the end face upper groove 9 of pressure spring 6 and eccentric end 40, gas or impurity when groove 9 can receive motion, eccentric bushing 5 can resiliences, make compressor stall can not occur, improve the Security of work.
Like Fig. 2, Fig. 7 and shown in Figure 11, the lower end at corresponding eccentric opening 50 inwall caulking grooves 8 places offers and is convenient to the opening slot 51 that elastic component is installed on eccentric bushing 5, also is provided with on the dovetail groove 7 of corresponding eccentric shaft 4 and is convenient to the opening end 70 that elastic component is installed; On the axial direction of bent axle radial disbalance part, offer the eccentric oil duct 10 of the straight line shape that connects major axis section 1, eccentric shaft 4 and minor axis section 3, the centrifugal force pump of eccentric oil duct 10 capable of using oil when bent axle rotates.
The above-mentioned variable bent axle of offset of the present invention can be used for rotary compressor; This compressor comprises housing; That housing comprises is simplified, loam cake and lower cover; Electric machine assembly and compressor assembly are installed in housing, and electric machine assembly is made up of the variable bent axle of stator, rotor and offset, and compressor assembly is made up of cylinder, upper bearing (metal) and lower bearing.
The present invention's eccentric circle section of bent axle originally is divided into eccentric shaft 4 and 5 two parts of eccentric bushing; Be equipped with pressure spring 6 assemblings between the two; Eccentric bushing 5 is socketed on the eccentric shaft 4 through the eccentric opening 50 at center; Eccentric bushing 5 eccentric shaft 4 is relatively done the radial direction displacement, and active force and centrifugal force that pressure spring 6 is produced are opposite; Through the pressure spring 6 of design suitable elasticity, when compressor is higher than certain frequency of okperation, because there is the initial eccentricity distance in eccentric shaft 4; Eccentric bushing 5 is under centrifugal action, and radially outward progressively increases along with rotating speed increases offset; Pressure spring 6 constantly shrinks; When pressure spring 6 is compressed to limit position (as shown in Figure 5), the offset of eccentric bushing 5 is required displacement value on the bent axle, and compressor reaches normal operating condition.Compressor adopts the variable bent axle of offset of said structure, makes that the bent axle with the compressor of a series of different displacements can be the same with eccentric bushing, and the raising versatility is convenient to mass production; During work, utilize the low pressure area of bent axle tail end direction with the fan formation of rotor rotation, under differential pressure action, the centrifugal force pump oil of the eccentric oil duct 10 of straight line shape capable of using when bent axle rotates, refrigeration oil is sucted; Or the minor axis section 3 of lengthening bent axle, the Oil Guide sheet is installed within it, the centrifugal force pump oil of eccentric oil duct 10 solves the oil suction problem when also utilizing bent axle to rotate.
The above embodiment for preferred embodiment of the present invention, is not to limit practical range of the present invention with this just, and the equivalence that all shapes according to the present invention, structure and principle are done changes, and all should be covered by in protection scope of the present invention.
Claims (8)
1. variable bent axle of offset, this bent axle is made up of major axis section, eccentric circle section and minor axis section, it is characterized in that:
Said eccentric circle section comprises eccentric shaft and eccentric bushing; Said eccentric shaft both sides laterally arrange and with said major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside; The center of said eccentric bushing offers eccentric opening, the eccentric opening of eccentric bushing through the center be socketed on the eccentric shaft and relatively eccentric shaft do the radial direction displacement;
Be provided with the elastic component that is compressive state between the eccentric opening inwall of the corresponding end of said eccentric shaft eccentric end and eccentric bushing, said elastic component makes the eccentric end of eccentric bushing center eccentric opening opposite side inwall and eccentric shaft conflict.
2. the variable bent axle of a kind of offset according to claim 1 is characterized in that said eccentric shaft is square eccentric shaft, with the eccentric opening at the eccentric bushing center of eccentric shaft socket be square opening.
3. the variable bent axle of a kind of offset according to claim 1 is characterized in that, offers at least one gas that arranges when being used to receive eccentric shaft and eccentric bushing relative movement or the groove of impurity on the eccentric end face of said eccentric shaft.
4. the variable bent axle of a kind of offset according to claim 1; It is characterized in that; Said eccentric shaft offers the dovetail groove of being convenient to fixedly to hold said elastic component and increasing the eccentric bushing offset, offers the caulking groove that limits said elastic component on the corresponding eccentric bushing eccentric opening inwall.
5. according to claim 1 or the variable bent axle of 3 described a kind of offsets, it is characterized in that said elastic component is a pressure spring.
6. the variable bent axle of a kind of offset according to claim 1; It is characterized in that; The lower end at corresponding eccentric opening inwall caulking groove place offers and is convenient to the opening slot that elastic component is installed on the said eccentric bushing, also is provided with on the dovetail groove of corresponding eccentric shaft and is convenient to the opening end that elastic component is installed.
7. the variable bent axle of a kind of offset according to claim 1; It is characterized in that, offer on the axial direction of said bent axle radial disbalance part and connect major axis section, eccentric shaft and minor axis section and the oily eccentric oil duct of straight line shape of centrifugal force pump capable of using when bent axle rotates.
8. rotary compressor; This compressor comprises housing, and that housing comprises is simplified, loam cake and lower cover, and electric machine assembly and compressor assembly are installed in housing; Electric machine assembly is made up of stator, rotor and bent axle; Compressor assembly is made up of cylinder, upper bearing (metal) and lower bearing, it is characterized in that, the bent axle of this compressor uses aforesaid right to require 1 to 7 any variable bent axle of described offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210229011.8A CN102797680B (en) | 2012-07-03 | 2012-07-03 | Eccentric variable crankshaft and rotary compressor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210229011.8A CN102797680B (en) | 2012-07-03 | 2012-07-03 | Eccentric variable crankshaft and rotary compressor using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797680A true CN102797680A (en) | 2012-11-28 |
| CN102797680B CN102797680B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210229011.8A Active CN102797680B (en) | 2012-07-03 | 2012-07-03 | Eccentric variable crankshaft and rotary compressor using same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832402A (en) * | 2015-04-30 | 2015-08-12 | 珠海凌达压缩机有限公司 | Crankshaft and compressor with same |
| CN104863860A (en) * | 2015-06-01 | 2015-08-26 | 刘志庆 | Crankshaft on rotary compressor |
| CN104912910A (en) * | 2014-03-11 | 2015-09-16 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
| CN105402131A (en) * | 2015-12-18 | 2016-03-16 | 珠海凌达压缩机有限公司 | Air conditioner, compressor and bent axle thereof |
| CN106678017A (en) * | 2017-02-14 | 2017-05-17 | 安徽美芝制冷设备有限公司 | Reciprocating compressor and refrigerator with same |
| CN109058279A (en) * | 2018-11-01 | 2018-12-21 | 长沙多浦乐泵业科技有限公司 | A kind of eccentric wheel |
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|---|---|---|---|---|
| CN2074383U (en) * | 1990-07-07 | 1991-04-03 | 西安交通大学 | Rotary-piston compressor |
| JPH08303375A (en) * | 1995-05-11 | 1996-11-19 | Hitachi Ltd | Rotary compressor |
| CN2931908Y (en) * | 2006-06-07 | 2007-08-08 | 上海日立电器有限公司 | Band axle |
| CN101994699A (en) * | 2009-08-28 | 2011-03-30 | 乐金电子(天津)电器有限公司 | Elastic eccentric crank structure for compressor |
| CN201953659U (en) * | 2011-03-09 | 2011-08-31 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN202789529U (en) * | 2012-07-03 | 2013-03-13 | 珠海格力电器股份有限公司 | Eccentric variable crankshaft and rotary compressor using same |
-
2012
- 2012-07-03 CN CN201210229011.8A patent/CN102797680B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074383U (en) * | 1990-07-07 | 1991-04-03 | 西安交通大学 | Rotary-piston compressor |
| JPH08303375A (en) * | 1995-05-11 | 1996-11-19 | Hitachi Ltd | Rotary compressor |
| CN2931908Y (en) * | 2006-06-07 | 2007-08-08 | 上海日立电器有限公司 | Band axle |
| CN101994699A (en) * | 2009-08-28 | 2011-03-30 | 乐金电子(天津)电器有限公司 | Elastic eccentric crank structure for compressor |
| CN201953659U (en) * | 2011-03-09 | 2011-08-31 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN202789529U (en) * | 2012-07-03 | 2013-03-13 | 珠海格力电器股份有限公司 | Eccentric variable crankshaft and rotary compressor using same |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912910A (en) * | 2014-03-11 | 2015-09-16 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
| CN104912910B (en) * | 2014-03-11 | 2018-12-04 | 珠海格力电器股份有限公司 | Crankshaft and compressor |
| CN104832402A (en) * | 2015-04-30 | 2015-08-12 | 珠海凌达压缩机有限公司 | Crankshaft and compressor with same |
| CN104863860A (en) * | 2015-06-01 | 2015-08-26 | 刘志庆 | Crankshaft on rotary compressor |
| CN105402131A (en) * | 2015-12-18 | 2016-03-16 | 珠海凌达压缩机有限公司 | Air conditioner, compressor and bent axle thereof |
| CN105402131B (en) * | 2015-12-18 | 2023-11-24 | 珠海凌达压缩机有限公司 | Air conditioner, compressor and crankshaft thereof |
| CN106678017A (en) * | 2017-02-14 | 2017-05-17 | 安徽美芝制冷设备有限公司 | Reciprocating compressor and refrigerator with same |
| CN106678017B (en) * | 2017-02-14 | 2019-03-12 | 安徽美芝制冷设备有限公司 | Reciprocating compressor and refrigerator with it |
| CN109058279A (en) * | 2018-11-01 | 2018-12-21 | 长沙多浦乐泵业科技有限公司 | A kind of eccentric wheel |
| CN109058279B (en) * | 2018-11-01 | 2024-04-26 | 长沙多浦乐泵业科技有限公司 | Eccentric wheel |
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| Publication number | Publication date |
|---|---|
| CN102797680B (en) | 2015-11-18 |
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