CN202301023U - Coupling for vortex compressor and vortex compressor - Google Patents
Coupling for vortex compressor and vortex compressor Download PDFInfo
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- CN202301023U CN202301023U CN2011203820343U CN201120382034U CN202301023U CN 202301023 U CN202301023 U CN 202301023U CN 2011203820343 U CN2011203820343 U CN 2011203820343U CN 201120382034 U CN201120382034 U CN 201120382034U CN 202301023 U CN202301023 U CN 202301023U
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- shaft coupling
- scroll compressor
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- straight beam
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Abstract
The utility model provides a coupling for a vortex compressor. The coupling is characterized in that the coupling comprises a main body, the main body is provided with four separated straight beams and connecting pieces connected with two random adjacent straight beams. The four straight beams are two pairs of straight beams relatively parallel to each other, and each straight beam is provided with an outer smooth surface. Besides, the utility model further provides the vortex compressor using the coupling.
Description
Technical field
The utility model relates to the scroll compressor field, relates in particular to, and is used for the shaft coupling and the scroll compressor that uses this shaft coupling of scroll compressor.
Background technique
Usually, compressor is the potential that is converted into mechanical energy compressible fluid, can be divided into reciprocal compressor, scroll compressor (or scroll compressor), centrifugal compressor and vane compressor particularly.
Typically, the working principle of scroll compressor is through the basic circle center rotation of moving scroll around fixed scroll, and dwindles the volume by the formed gas compression of the joint chamber of said moving scroll and fixed scroll gradually, thereby reaches the purpose of pressurized gas.Wherein, moving scroll directly supports on the support that is fixed in the compressor housing.In addition; An end (upper end) that is used for driving the bent axle that said moving scroll rotates is connected to moving scroll through the center hole of support; The other end (lower end) directly supports on the following supporting frame that is fixed in the scroll compressor housing; Thereby when bent axle when rotating clockwise or counterclockwise, can carry out air-breathing accordingly, compression and bleeding.Wherein compressed gas is discharged into through escape cock in the hyperbaric chamber of scroll compressor, finally discharges through floss hole.
The moving scroll of scroll compressor and fixed scroll adopt Oldham's coupling to engage usually.The effect of this Oldham's coupling is to satisfy moving scroll is made minor radius around fixed scroll basic circle center plane rotation, and the rotation of anti-stop scroll.At present, the general type of Oldham's coupling comprises the key that the loop configuration from Oldham's coupling of two pairs of one-tenth cross distribution is given prominence to.First pair of key that is oppositely arranged is engaged in the groove of moving scroll, and second pair of key that is oppositely arranged is engaged in the groove of fixed scroll.
Yet above-mentioned Oldham's coupling because said key becomes the cross distribution setting, can receive the effect of torsional moment in the working procedure of scroll compressor, and then the Oldham's coupling torsional deflection that makes.Above-mentioned torsional deflection makes the area of contact of the friction surface between said key and moving scroll and the fixed scroll change, and then has caused bigger frictional loss.In addition,, in the working procedure of scroll compressor, possibly bump between the parts such as moving scroll and fixed scroll, finally cause producing noise owing to adopt the form of Oldham's coupling.Above-mentioned problem all possibly cause the reliability of scroll compressor to reduce, even breaks down or reprocess.
Therefore, necessaryly provide a kind of and have the shaft coupling that improves performance, and the scroll compressor that uses it.
The model utility content
The purpose of the utility model is intended to solve the problems referred to above of existing in the existing technology and at least one aspect of defective.
Correspondingly, one of purpose of the utility model provides and has the shaft coupling that is used for scroll compressor that improves performance.The shaft coupling that is used for scroll compressor comprises: main body; Said main body is provided with four isolated straight beams, with the link that is connected said any two adjacent straight beams, wherein; Said four straight beams are the straight beam that two pairs of opposing parallel are provided with, and said each straight beam has outer plat surface.
In one embodiment, said four straight beams prolongation dotted line of being configured to two adjacent straight beams becomes the unspecified angle in 0-180 ° the scope.
Preferably, the width of said each straight beam is configured to equal the radial width of said link, makes said straight beam and said link carry out smooth connection.
Particularly, the width of said each straight beam is configured to the radial width greater than said link, makes the part of said straight beam form the boss part on the said main body.
Additionally; Said scroll compressor comprises moving scroll and fixed scroll; Said moving scroll comprises first boss structure that cooperates with a pair of straight beam that relatively laterally arranges wherein, and said fixed scroll comprises and said second boss structure that another cooperates the straight beam that relatively laterally arranges.
In addition, said first boss structure and said second boss structure comprise the first outer plat surface and the second outer plat surface that the outer plat surface with said straight beam is slidingly matched respectively.
Preferably, the length of the said first outer plat surface and the second outer plat surface is greater than the length of said outer plat surface.
Further, the upper surface and/or the lower surface of the link of said main body are provided with circular-arc-shaped slot, and the upper surface of said each straight beam and/or lower surface are provided with straight slit.
In addition, said main body is that upper surface and lower surface all are eight side ring shape structures of plat surface, and said link is arc or sector structure.
Preferably, the separated ground of said straight beam and said link or be molded into integratedly on the said main body.
Particularly, said outer plat surface, the first outer plat surface and the second outer plat surface are provided with wearing layer.
Another purpose of the utility model provides the scroll compressor that uses above-mentioned shaft coupling.Said scroll compressor comprises: the scroll compressor housing; Support, said support are installed in the said scroll compressor housing; Fixed scroll, said fixed scroll are fixed in the said scroll compressor housing; Moving scroll, said moving scroll is supported on rotationally on the said support and with said fixed scroll and engages; Actuating mechanism, said actuating mechanism are fixed on the lower end of said scroll compressor and link to each other with said moving scroll and rotate to drive said moving scroll, wherein, engage said fixed scroll and moving scroll according to above-mentioned shaft coupling.
Compare with existing Oldham's coupling, four straight beams with flat outer surface that shaft coupling of the present invention is employed in the same plane have replaced four pin structures, and therefore shaft coupling of the present invention needn't bear warping force.Finally reduce frictional loss, caused improving the performance of scroll compressor.Because four straight beams all are in the same plane with link, therefore shaft coupling of the present invention is more prone to manufacturing, and has reduced cost of production.Shaft coupling of the present invention is compared with Oldham's coupling before, owing to eliminated warping force, firmer, cause having increased reliability, and greatly reduced rate of fault or repair rate.In addition, shaft coupling of the present invention is measured more easily, and has reduced fixed cost.
Description of drawings
These of the utility model and/or other aspects and advantage are from obviously with easily understanding below in conjunction with becoming the accompanying drawing description of preferred embodiments, wherein:
Fig. 1 is the sectional view according to an embodiment's of invention scroll compressor;
Fig. 2 a and 2b are respectively plane view and the perspective views that is used for the shaft coupling of Fig. 1;
Fig. 3 a is the assembled view that the shaft coupling of the moving scroll, fixed scroll and Fig. 2 a that are used for Fig. 1 and Fig. 2 b is assembled together;
Fig. 3 b is the sectional view of straight-line cutting of the mid point of two straight beams in Fig. 3 a;
Fig. 4 is the decomposition view of moving scroll, fixed scroll and shaft coupling among Fig. 3 a;
Fig. 5 is another decomposition view of moving scroll, fixed scroll and shaft coupling among Fig. 3 a;
Fig. 6 a and 6b are respectively the perspective view and the plane views of another shaft coupling that is used for the scroll compressor of Fig. 1;
Fig. 7 a is the assembled view that the shaft coupling among moving scroll, fixed scroll and Fig. 6 a and the 6b that is used for Fig. 1 is assembled together;
Fig. 7 b is the sectional view of straight-line cutting of the mid point of two straight beams in Fig. 7 a;
Fig. 8 is the decomposition view of moving scroll, fixed scroll and shaft coupling among Fig. 6 a;
Fig. 9 is another decomposition view of moving scroll, fixed scroll and shaft coupling among Fig. 6 a.
Embodiment
Pass through embodiment below, and combine accompanying drawing 1-9, do further bright specifically the technological scheme of the utility model.In specification, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to the utility model mode of execution is intended to the present general inventive concept of the utility model is made an explanation with reference to accompanying drawing, and is not to be understood that and is a kind of restriction to the utility model.
With reference to accompanying drawing the scroll compressor according to the embodiment of the utility model is described below.
As shown in Figure 1, it has demonstrated a kind of scroll compressor 100 of the present invention.This scroll compressor 100 comprises: scroll compressor housing 1; Support 2, this support 2 is fixed in the scroll compressor housing 1; Fixed scroll 3, it is fixed in the scroll compressor housing 1; Moving scroll 4, it is supported on the said support 2 rotationally and engages to form gas compression chamber 11 with said fixed scroll 3; Following supporting frame 5 is fixed on the lower end of said compressor housing 1; Actuating mechanism 7 is fixed on the lower end of scroll compressor 100, and it transmits its rotatory force through crank mechanism 71.The upper end of crank mechanism 71 links to each other with moving scroll 4 to fetch and drives said moving scroll 4 rotations, and its lower end is supported on down on the supporting frame 5; Escape cock 8 is used for discharging the gas of said gas compression chamber 11 and prevents that gas backstreaming is in said scroll compressor 100.
Moving scroll 4 is supported on the upper surface or supporting surface of support 2; Said scroll compressor housing 1 portion within it limits a confined space, and parts such as above-mentioned fixed scroll 3, moving scroll 4, support 2 are received into wherein.The vortex filament structure of fixed scroll 3 and the vortex filament structure of moving scroll 4 cooperatively interact and mesh or engage formation pressing chamber 11.Fixed scroll 3 is arranged on the top of moving scroll 4.Actuating mechanism 7 is one to comprise the motor of stator and rotor, and this motor drives moving scroll 4 through crank mechanism 71.
When scroll compressor 100 work; Suck gas from suction port 9; After actuating mechanism 7 (for example motor) starts; Moving scroll 4 is driven by crank mechanism 7 and by anti-rotation mechanism shaft coupling 6 (referring to Fig. 2 a and 2b) constraint, the revolution of doing minor radius around the basic circle center of fixed scroll 3 is reversed, and then in the gas compression chamber 11 that moving scroll 4 and fixed scroll 3 form, produces high pressure-temperature gas; This high pressure-temperature gas is along with the escape cock 8 that moves through of moving scroll 4 is discharged in the hyperbaric chamber 12, and use escape cock 8 to prevent the backflow of gas in the hyperbaric chamber 12 this moment; Gas in final this hyperbaric chamber 12 is discharged through relief opening 10.The circulation said process can constantly produce high temperature and high pressure gas in scroll compressor 100.
In the present invention, support 2 comprises stake body 21 and tray deck 22.In addition, stake body 21 is fixed in the said scroll compressor housing 1 with interference fit, and overlap joint is on the housing end face of said scroll compressor 100.Said tray deck 22 is fixed on the said stake body 21 with the mode of Spielpassung, and the chute of said tray deck 22 overlap joint is fixed said tray deck 22 thus and said tray deck 22 can not be rotated on said stake body 21.Said cross slip ring 23 has into two the relative raisings and the lower convexity of cross distribution, and said lower convexity is inserted in the chute on the tray deck 22, and said raising is inserted in the ear groove of said moving scroll 4.When said scroll compressor 100 was started working, said moving scroll 4 can be carried out the revolution translation of minor radius with respect to tray deck 22.
In the time of if desired (for example supporting disk 22 be used to support the Area of bearing of moving scroll 4 big inadequately); Radial bearing disk 24 can also be set to increase Area of bearing to moving scroll 4 between said moving scroll 4 and cross slip ring 23; This radial bearing disk 24 is fixed and is overlapped on said tray deck 22 with interference fit, and supports said moving scroll 4.
Seeing that vortex contraction principle, squeeze operation and other the accessory (although not illustrating) of scroll compressor 100 are well known to those of ordinary skill in the art.Therefore, be described in this and no longer be elaborated about scroll compressor 100 is integrally-built.
First embodiment
Referring to Fig. 2 a and Fig. 2 b, it shows the shaft coupling 6 that is used to engage moving scroll 4 and fixed scroll 3 according to of the present invention.This shaft coupling 6 comprises main body 61; Said main body 61 is provided with four isolated straight beams 62, with the link that is connected said any two adjacent straight beams 62 63, wherein; Said four straight beams 62 are the straight beam that two pairs of opposing parallel are provided with, and said each straight beam 62 has outer plat surface 621.
In one embodiment of the invention, shown in Fig. 2 a and 2b, the elongation line that said four straight beams 62 are configured to two adjacent straight beams is vertical each other.Two for example adjacent straight beams 62 are provided with at angle and two relative straight beams 62 are parallel to each other, and also can realize effect of the present invention or function when the virtual elongation line of said in other words four straight beams 62 constitutes rhombus.That is, as long as straight beam 62 is arranged to relative straight beam 62 and is parallel to each other in the present invention.Therefore, to intersect formed angle be unspecified angle in 0-180 ° to the elongation line of adjacent two straight beams 62 of the present invention.
In addition, the width of said each straight beam 62 is configured to equal the radial width of said link 63, makes said straight beam 62 to carry out smooth connection with link 63.
Referring to Fig. 3 a to Fig. 5; Said moving scroll 4 comprises two first boss structures 41 that cooperate with a pair of straight beam that relatively laterally arranges 62 wherein, and said fixed scroll 3 comprises and said two second boss structures 31 that another cooperates the straight beam 62 that relatively laterally arranges.Two the first outer plat surface 411 that are parallel to each other that said first boss structure 41 and said second boss structure 31 comprise respectively that four outer plat surface 621 with said straight beam 62 are slidingly matched and the second outer plat surface 311.
In order to improve the reliability of shaft coupling, the length of the said first outer plat surface 411 and the second outer plat surface 311 is greater than the length of said outer plat surface 621.
Refer again to Fig. 2 a and 2b; The upper surface and/or the lower surface of the link 63 of said main body 61 are provided with circular-arc-shaped slot 65; The upper surface of said each straight beam 62 and/or lower surface are provided with straight slit 66, are used to alleviate the weight of shaft coupling 6 and reduce production costs.Said main body 61 is that upper surface and lower surface all are eight side ring shape structures of plat surface, and said link 63 is arc or sector structure.
In the manufacture process of shaft coupling 6, said straight beam 62 is with said link 63 separated ground or be molded into integratedly on the said main body 61.In addition, in order to improve wear resistance, plat surface 621, the first outer plat surface 411 and the second outer plat surface 311 are provided with wearing layer outside.
Referring to Figure 4 and 5, fixed scroll 3 is provided with the first vortex filament structure 32, and corresponding earthquake scroll 4 is provided with the second vortex filament structure 42.The first vortex filament structure 32 and the second vortex filament structure 42 present spirality.When fixed scroll 3 and moving scroll 4 were assembled together, the first vortex filament structure 32 and the second vortex filament structure 42 were by off-centre and differ 180 ° of ground installations; When quiet and moving scroll 3 and 4 was meshed together, they cooperated with separately end plate and have formed a series of crescent shape enclosed space (that is, pressing chamber 11).
When scroll compressor 100 work; Fixed scroll 3 remains transfixion, and moving scroll 4 drives the eccentric revolution of do translation (promptly by crank mechanism 71 under the constraint of anti-rotation mechanism shaft coupling 6; Not rotation may also be referred to as the revolution into the basic circle center that centers on fixed scroll 3).In the present invention, moving scroll 4 is done the revolution translation with several millimeters the turning radius around the center of fixed scroll 3 (main shaft).The revolution translation of the one whole of moving scroll 4 is: referring to Fig. 3 a; At first moving scroll 4 through the first outer plat surface 411 with outside cooperating of plat surface 621 and with the motionless situation of shaft coupling 6 maintenance relative fixed under, the plat surface 311 upper left side slip in Fig. 3 a outside second of outer plat surface 621; Keeping under the motionless relatively situation of fixed scroll 3 and shaft coupling 6 afterwards, the first outer plat surface 411 of scroll 4 is slided along the left bottom of outer plat surface 621 in Fig. 3 a; Secondly, keep under the motionless situation of relative fixed at moving scroll 4 and shaft coupling 6, outer plat surface 621 plat surface 311 outside second slides to the lower right of Fig. 3 a; Finally, keeping under the motionless relatively situation of fixed scroll 3 and shaft coupling 6, the first outer plat surface 411 of scroll 4 is slided along the upper right of outer plat surface 621 in Fig. 3 a.The direction that is appreciated that the above-mentioned revolution translation that illustrates is counterclockwise to slide, and can certainly be arranged to as required slide along clockwise direction.
Gas refrigerant gets into the crescent-shaped space or the pressing chamber 11 of the outmost turns of fixed scroll 3 and moving scroll 4 from suction port 9; Revolution translation along with moving scroll 4; Gas refrigerant is pushed to central space gradually, and its volume constantly dwindles and pressure constantly raises, until (not shown with the central row pore; It is communicated with relief opening 10) communicate, final pressurized gas are discharged from scroll compressor 100.
Second embodiment
In a second embodiment; Except the setting of the straight beam 62 ' of shaft coupling 6 is different with the straight beam among first embodiment; The setting of moving scroll 4, fixed scroll 3 and shaft coupling 6 basically with first embodiment in identical; Therefore identical part no longer is described in detail, and identical parts have used identical reference mark.
With reference to figure 6a and 6b, the width of said each straight beam 62 ' is configured to the radial width greater than said link 63, makes the part of said straight beam 62 ' form the boss part 64 on the said main body 61.Each boss part 64 plat surface 621 outside its outermost end has.
Fig. 7 a and 7b show assembling condition schematic representation that moving scroll 4, fixed scroll 3 and shaft coupling 6 be assembled together respectively and along the sectional view of the mid point line cutting of shaft coupling 6.In addition, Fig. 8 and Fig. 9 show moving scroll 4, fixed scroll 3 and shaft coupling 6 respectively and observe the decomposition view that obtains from different directions.
Can know through above-mentioned description; Four straight beams 62 ' of the shaft coupling 6 in the second embodiment of the present invention also have four outer plat surface 621, therefore also can realize moving scroll 4 with the mode that is similar to first embodiment and turn round translation around the center of fixed scroll 3.Particularly; When using second embodiment's shaft coupling 6; The revolution translation of the one whole of moving scroll 4 is: referring to Fig. 7 a; At first moving scroll 4 through the first outer plat surface 411 with outside cooperating of plat surface 621 and with the motionless situation of shaft coupling 6 maintenance relative fixed under, the plat surface 311 upper right slip in Fig. 3 a outside second of outer plat surface 621; Keeping under the motionless relatively situation of fixed scroll 3 and shaft coupling 6 afterwards, the first outer plat surface 411 of scroll 4 is slided along the upper left side of outer plat surface 621 in Fig. 3 a; Secondly, keep under the motionless situation of relative fixed at moving scroll 4 and shaft coupling 6, outer plat surface 621 plat surface 311 outside second slides to the left bottom of Fig. 3 a; Finally, keeping under the motionless relatively situation of fixed scroll 3 and shaft coupling 6 afterwards, the first outer plat surface 411 of scroll 4 is slided along the lower right of outer plat surface 621 in Fig. 3 a.The direction that is appreciated that the above-mentioned revolution translation that illustrates is counterclockwise to slide, and can certainly be arranged to as required slide along clockwise direction.
Therefore existing Oldham's coupling has four carrier surface positions, will cause the Oldham's coupling distortion, and finally causes taking place parts such as fixed scroll and moving scroll and bump.Compare with existing Oldham's coupling, four straight beams with flat outer surface that shaft coupling of the present invention is employed in the same plane have replaced four pin structures, and therefore shaft coupling of the present invention needn't bear warping force.Finally reduce frictional loss, caused improving the performance of scroll compressor.Because four straight beams all are in the same plane with link, therefore shaft coupling of the present invention is more prone to manufacturing, and has reduced cost of production.Shaft coupling of the present invention is compared with Oldham's coupling before, owing to eliminated warping force, firmer, cause having increased reliability, and greatly reduced rate of fault or repair rate.In addition, shaft coupling of the present invention is measured more easily, and has reduced fixed cost.
Though some embodiments of this present general inventive concept are shown and explain; Those skilled in the art will appreciate that; Under the situation of principle that does not deviate from this present general inventive concept and spirit; Can make a change these embodiments, the scope of the utility model limits with claim and their equivalent.
Claims (12)
1. a shaft coupling that is used for scroll compressor is characterized in that, said shaft coupling comprises:
Main body, said main body are provided with four isolated straight beams, with the link that is connected said any two adjacent straight beams,
Wherein, said four straight beams are the straight beam that two pairs of opposing parallel are provided with, and said each straight beam has outer plat surface.
2. the shaft coupling that is used for scroll compressor according to claim 1 is characterized in that,
The prolongation dotted line that said four straight beams are configured to two adjacent straight beams becomes 0-180 ° the interior unspecified angle of scope.
3. the shaft coupling that is used for scroll compressor according to claim 1 and 2 is characterized in that,
The width of said each straight beam is configured to equal the radial width of said link, makes said straight beam and said link carry out smooth connection.
4. the shaft coupling that is used for scroll compressor according to claim 1 and 2 is characterized in that,
The width of said each straight beam is configured to the radial width greater than said link, makes the part of said straight beam form the boss part on the said main body.
5. the shaft coupling that is used for scroll compressor according to claim 1 is characterized in that,
Said scroll compressor comprises moving scroll and fixed scroll; Said moving scroll comprises first boss structure that cooperates with a pair of straight beam that relatively laterally arranges wherein, and said fixed scroll comprises and said second boss structure that another cooperates the straight beam that relatively laterally arranges.
6. the shaft coupling that is used for scroll compressor according to claim 5 is characterized in that,
Said first boss structure and said second boss structure comprise the first outer plat surface and the second outer plat surface that the outer plat surface with said straight beam is slidingly matched respectively.
7. the shaft coupling that is used for scroll compressor according to claim 6 is characterized in that,
The length of the said first outer plat surface and the second outer plat surface is greater than the length of said outer plat surface.
8. the shaft coupling that is used for scroll compressor according to claim 1 is characterized in that,
The upper surface and/or the lower surface of the link of said main body are provided with circular-arc-shaped slot, and the upper surface of said each straight beam and/or lower surface are provided with straight slit.
9. the shaft coupling that is used for scroll compressor according to claim 1 is characterized in that,
Said main body is that upper surface and lower surface all are eight side ring shape structures of plat surface, and said link is arc or sector structure.
10. the shaft coupling that is used for scroll compressor according to claim 1 is characterized in that,
The separated ground of said straight beam and said link or be molded into integratedly on the said main body.
11. the shaft coupling that is used for scroll compressor according to claim 6 is characterized in that,
Said outer plat surface, the first outer plat surface and the second outer plat surface are provided with wearing layer.
12. a scroll compressor is characterized in that, comprising:
The scroll compressor housing;
Support, said support are installed in the said scroll compressor housing;
Fixed scroll, said fixed scroll are fixed in the said scroll compressor housing;
Moving scroll, said moving scroll is supported on rotationally on the said support and with said fixed scroll and engages;
Actuating mechanism, said actuating mechanism are fixed on the lower end of said scroll compressor and link to each other with said moving scroll and rotate to drive said moving scroll,
Wherein, engage said fixed scroll and moving scroll according to each described shaft coupling among the claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203820343U CN202301023U (en) | 2011-09-30 | 2011-09-30 | Coupling for vortex compressor and vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203820343U CN202301023U (en) | 2011-09-30 | 2011-09-30 | Coupling for vortex compressor and vortex compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301023U true CN202301023U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203820343U Expired - Fee Related CN202301023U (en) | 2011-09-30 | 2011-09-30 | Coupling for vortex compressor and vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032317A (en) * | 2011-09-30 | 2013-04-10 | 丹佛斯（天津）有限公司 | Scroll compressor and coupling therefor |
-
2011
- 2011-09-30 CN CN2011203820343U patent/CN202301023U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032317A (en) * | 2011-09-30 | 2013-04-10 | 丹佛斯（天津）有限公司 | Scroll compressor and coupling therefor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20160930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |