CN202789529U - Eccentric variable crankshaft and rotary compressor using same - Google Patents
Eccentric variable crankshaft and rotary compressor using same Download PDFInfo
- Publication number
- CN202789529U CN202789529U CN 201220320101 CN201220320101U CN202789529U CN 202789529 U CN202789529 U CN 202789529U CN 201220320101 CN201220320101 CN 201220320101 CN 201220320101 U CN201220320101 U CN 201220320101U CN 202789529 U CN202789529 U CN 202789529U
- Authority
- CN
- China
- Prior art keywords
- eccentric
- bent axle
- eccentric shaft
- opening
- shaft
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract 1
- 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
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method 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
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a variable bent axle of eccentricity, this bent axle comprises major axis section, eccentric circle section and minor axis section, eccentric circle section includes eccentric shaft and eccentric cover, eccentric shaft both sides parallel arrangement and with major axis section and minor axis section integrative coaxial processing shaping and set up in a side off-center, the eccentric hole has been seted up at the center of eccentric cover, eccentric cover cup joints on the eccentric shaft through the eccentric hole at center and can do radial direction displacement 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 utility model discloses still disclose a rotary compressor, the bent axle of this compressor uses the variable bent axle of eccentric volume.
Description
[technical field]
The utility model relates to the bent axle of compressor, relates in particular to the variable bent axle of a kind of offset and uses 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) are integrated, and the eccentric circle section a outside of bent axle puts roller, rotates in cylinder, 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, may cause stall when entering impurity in the cylinder body of cylinder; And the electric current that needs when starting is large, can occur vibrating larger phenomenon when low frequency turns round.
[model utility content]
It is a kind of easy to process reliable that the utility model provides, offset adaptivity variable, the high and low pressure chamber is progressively separated, load rises gradually, compressor operating is more stable, reduce simultaneously eccentric precision processing request, promote opposing impurity ability, have certain adaptivity and the variable bent axle of offset that can Effective Raise Crankshaft Machining efficient and use the rotary compressor of this bent axle.
In order to realize above-mentioned model utility purpose, the technical solution adopted in the utility model is:
The variable bent axle of a kind of offset, this bent axle is comprised of major axis section, eccentric circle section and minor axis section, described eccentric circle section comprises eccentric shaft and eccentric bushing, described eccentric shaft both sides be arranged in parallel and with described major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside, the center of described eccentric bushing offers eccentric opening, the eccentric opening of eccentric bushing by 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 described eccentric shaft eccentric end and eccentric bushing, described elastic component is so that the eccentric end conflict of eccentric bushing center eccentric opening opposite side inwall and eccentric shaft.
Described 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 for receiving eccentric shaft and eccentric bushing relative movement or the groove of impurity on the eccentricity end face of described eccentric shaft.
Described eccentric shaft offers the dovetail groove of being convenient to fixedly to hold described elastic component and increasing the eccentric bushing offset, offers the caulking groove that limits described 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.
Described elastic component is Compress 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 described 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 the eccentric oil duct of the straight line shape that connects major axis section, eccentric shaft and minor axis section and when bent axle rotates, can utilize centrifugal force pump oil on the axial direction of described bent axle radial disbalance part.
A kind of 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, electric machine assembly is comprised of stator, rotor and bent axle, compressor assembly is comprised 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 beneficial effects of the utility model are:
The utility model originally eccentric circle section of bent axle is divided into eccentric shaft and two parts of eccentric bushing, be equipped with the Compress Spring assembling between the two, eccentric bushing is socketed on the eccentric shaft by the eccentric opening at center, described eccentric shaft both sides be arranged in parallel and with described major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside, in the 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 is done the radial direction displacement, the active force that Compress Spring is produced is opposite with centrifugal force; Compress Spring by the design suitable elasticity, when compressor is higher than certain frequency of okperation, because there is original eccentricity distance in eccentric shaft, eccentric bushing is under centrifugal action, and radially outward movment progressively increases along with rotating speed increases offset, Compress Spring constantly shrinks, when Compress 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 eccentric bushing with the bent axle of the compressor of a series of different displacements, 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 Compress Spring, eccentric bushing can resilience, stall can not occur, improves Security.
Simultaneously, offer two grooves on the eccentricity end face of eccentric shaft, the gas or the impurity that arrange when being used for receiving 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, the low pressure area that the fan that utilizes the crankshaft back end direction to rotate with rotor forms, under differential pressure action, bent axle can utilize the centrifugal force pump oil of eccentric oil duct when rotating, refrigeration oil is sucted; Or the minor axis section of lengthening bent axle, oil guide piece 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 prior art;
Fig. 2 is the structural representation that bent axle has broken section in the utility model;
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 be among Fig. 4 eccentric bushing at the cross section amplification assumption diagram of centrifugal action lower compression during to limit position;
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 such as Fig. 2, this bent axle is comprised of major axis section 1, eccentric circle section 2 and minor axis section 3, described eccentric circle section 2 comprises eccentric shaft 4 and eccentric bushing 5, described eccentric shaft 4 both sides be arranged in parallel and shape and at one side eccentric setting, so that there is original eccentricity distance in eccentric shaft with described eccentric shaft 4 and described major axis section 2 and minor axis section 3 one are coaxial; Offer eccentric opening 50 at the center of eccentric bushing 5, the eccentric opening 50 of eccentric bushing 5 by the center be socketed on the eccentric shaft 4 and relatively eccentric shaft 4 do the radial direction displacement so that the offset of this bent axle is 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 Compress Spring (the following stated Compress Spring all refers to elastic component), and Compress Spring 6 is so 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, offer at eccentric shaft 4 and to be convenient to the dovetail groove 7 that fixedly holds Compress Spring 6 and increase eccentric bushing 5 offsets, offer the caulking groove 8 of restriction Compress Spring 6 on eccentric bushing 5 eccentric openings 50 inwalls of correspondence; Two inclined-planes mainly limit the displacement of Compress Spring 6 on the bent axle Vertical direction on the dovetail groove 7, caulking groove 8 main restriction Compress Spring 6 displacements in the horizontal direction on eccentric bushing 5 eccentric openings 50 inwalls.
As shown in figure 10, also offer two gases that arrange when being used for receiving eccentric shaft 4 with eccentric bushing 5 relative movement or the groove 9 of impurity on the end face of the eccentric end 40 of eccentric shaft 4; When in the pump housing hard impurity being arranged, because the existence of the end face upper groove 9 of Compress Spring 6 and eccentric end 40, gas or impurity when groove 9 can receive motion, eccentric bushing 5 can resiliences, so that compressor stall can not occur, improve the Security of work.
Such as 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; Axial direction in bent axle radial disbalance part offers the eccentric oil duct 10 of the straight line shape that connects major axis section 1, eccentric shaft 4 and minor axis section 3, can utilize the centrifugal force pump oil of eccentric oil duct 10 when bent axle rotates.
The above-mentioned variable bent axle of offset of the utility model 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, electric machine assembly is comprised of the variable bent axle of stator, rotor and offset, and compressor assembly is comprised of cylinder, upper bearing (metal) and lower bearing.
The utility model originally eccentric circle section of bent axle is divided into eccentric shaft 4 and 5 two parts of eccentric bushing, be equipped with Compress Spring 6 assemblings between the two, eccentric bushing 5 is socketed on the eccentric shaft 4 by the eccentric opening 50 at center, eccentric bushing 5 relatively eccentric shaft 4 is done the radial direction displacement, and the active force that Compress Spring 6 is produced is opposite with centrifugal force; Compress Spring 6 by the design suitable elasticity, when compressor is higher than certain frequency of okperation, because there is original eccentricity distance in eccentric shaft 4, eccentric bushing 5 is under centrifugal action, and radially outward movment progressively increases along with rotating speed increases offset, Compress Spring 6 constantly shrinks, when Compress 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, so that can be the same with eccentric bushing with the bent axle of the compressor of a series of different displacements, the raising versatility is convenient to mass production; During work, the low pressure area that the fan that utilizes the crankshaft back end direction to rotate with rotor forms, under differential pressure action, bent axle can utilize the centrifugal force pump oil of the eccentric oil duct 10 of straight line shape when rotating, and refrigeration oil is sucted; Or the minor axis section 3 of lengthening bent axle, oil guide piece 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 utility model, is not to limit practical range of the present utility model with this just, and the equivalence that all shapes according to the utility model, structure and principle are done changes, and all should be covered by in the protection domain of the present utility model.
Claims (8)
1. variable bent axle of offset, this bent axle is comprised of major axis section, eccentric circle section and minor axis section, it is characterized in that:
Described eccentric circle section comprises eccentric shaft and eccentric bushing, described eccentric shaft both sides be arranged in parallel and with described major axis section with minor axis section one is coaxial shapes and lateral deviation heart setting aside, the center of described eccentric bushing offers eccentric opening, the eccentric opening of eccentric bushing by 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 described eccentric shaft eccentric end and eccentric bushing, described elastic component is so that the eccentric end conflict of eccentric bushing center eccentric opening opposite side inwall and eccentric shaft.
2. the variable bent axle of a kind of offset according to claim 1 is characterized in that, described 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 for receiving eccentric shaft and eccentric bushing relative movement or the groove of impurity on the eccentricity end face of described eccentric shaft.
4. the variable bent axle of a kind of offset according to claim 1, it is characterized in that, described eccentric shaft offers the dovetail groove of being convenient to fixedly to hold described elastic component and increasing the eccentric bushing offset, offers the caulking groove that limits described 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 described elastic component is Compress 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 described 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 the eccentric oil duct of the straight line shape that connects major axis section, eccentric shaft and minor axis section and when bent axle rotates, can utilize centrifugal force pump oil on the axial direction of described bent axle radial disbalance part.
8. 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, electric machine assembly is comprised of stator, rotor and bent axle, compressor assembly is comprised of cylinder, upper bearing (metal) and lower bearing, it is characterized in that, the bent axle of this compressor uses the variable bent axle of the claims described offset of 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320101 CN202789529U (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 |
|---|---|---|---|
| CN 201220320101 CN202789529U (en) | 2012-07-03 | 2012-07-03 | Eccentric variable crankshaft and rotary compressor using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789529U true CN202789529U (en) | 2013-03-13 |
Family
ID=47816799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320101 Expired - Lifetime CN202789529U (en) | 2012-07-03 | 2012-07-03 | Eccentric variable crankshaft and rotary compressor using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797680A (en) * | 2012-07-03 | 2012-11-28 | 珠海格力电器股份有限公司 | Eccentric variable crankshaft and rotary compressor using same |
| CN105221428A (en) * | 2014-06-30 | 2016-01-06 | 珠海凌达压缩机有限公司 | Rotary compressor and crankshaft assembly thereof |
-
2012
- 2012-07-03 CN CN 201220320101 patent/CN202789529U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797680A (en) * | 2012-07-03 | 2012-11-28 | 珠海格力电器股份有限公司 | Eccentric variable crankshaft and rotary compressor using same |
| CN102797680B (en) * | 2012-07-03 | 2015-11-18 | 珠海格力电器股份有限公司 | Eccentric variable crankshaft and rotary compressor using same |
| CN105221428A (en) * | 2014-06-30 | 2016-01-06 | 珠海凌达压缩机有限公司 | Rotary compressor and crankshaft assembly thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102797680B (en) | Eccentric variable crankshaft and rotary compressor using same | |
| CN105570130A (en) | Compressor pump structure and compressor | |
| CN104963868A (en) | Rotary compressor and crankshaft thereof | |
| CN202789529U (en) | Eccentric variable crankshaft and rotary compressor using same | |
| CN202187919U (en) | Rotary type compressor | |
| CN204025042U (en) | Oil spout scroll air compressor | |
| CN205533217U (en) | Compressor pump body structure and compressor | |
| CN203516101U (en) | Scroll compressor | |
| CN103100518A (en) | Pneumatic vibrator provided with internally-arranged piston | |
| CN108194356B (en) | Pump body and compressor | |
| CN204118952U (en) | The syndeton of motor and shaft coupling | |
| CN206111557U (en) | Rotary compressor with novel pumping subassembly | |
| CN207363877U (en) | Compressor | |
| CN203742986U (en) | suction and exhaust structure of two-stage compressor | |
| CN201928109U (en) | Motor shell assembly of industrial fans | |
| CN218151432U (en) | Slider for compressor and have its pump body and compressor | |
| CN203292049U (en) | Pneumatic vibrator with built-in piston | |
| CN203009295U (en) | Scroll compressor | |
| CN201779020U (en) | Thrust structure of rotary compressor | |
| CN204200580U (en) | Compressor pump and there is its compressor | |
| CN205172957U (en) | There is not oily vortex air compressor | |
| CN205297928U (en) | Scroll compressor's balancing unit | |
| CN205544653U (en) | Compressor core damping structure and refrigerator compressor | |
| CN204783677U (en) | Rotary compressor and bent axle thereof | |
| CN205578490U (en) | crankshaft and rotary compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |