CN205370973U - Scroll compressor and air conditioner - Google Patents
Scroll compressor and air conditioner Download PDFInfo
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- CN205370973U CN205370973U CN201620100103.XU CN201620100103U CN205370973U CN 205370973 U CN205370973 U CN 205370973U CN 201620100103 U CN201620100103 U CN 201620100103U CN 205370973 U CN205370973 U CN 205370973U
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- orbiting scroll
- movable orbiting
- screw compressor
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Abstract
The utility model relates to a scroll compressor and air conditioner, wherein scroll compressor is including moving whirlpool dish (2) and being used for supporting move support (7) of whirlpool dish (2), move whirlpool dish (2) and be equipped with the magnetic suspension structure between support (7), the magnetic suspension structure is used for producing to be made move the magnetic force of whirlpool dish (2) suspension. The utility model discloses a set up the suspension structure between whirlpool dish and the support moving for move the whirlpool dish and can obtain the magnetic force that suspends, can reduce effectively scroll compressor starting phase because of each chamber insufficient pressure, move the wearing and tearing that the whirlpool dish can not suspend fast and produce, at scroll compressor's normal operating in -process, the suspension magnetic force that moves the whirlpool dish can substitute the gas pressure of some fluctuations simultaneously to the feasible operation of moving the whirlpool dish can be more steady, reduces the wearing and tearing of moving between whirlpool dish and the support, and then reduce scroll compressor's consumption, improves scroll compressor's performance.
Description
Technical field
This utility model relates to Compressor Technology field, particularly relates to a kind of screw compressor and air-conditioner.
Background technology
Screw compressor operationally, owing to orbiter bears the effect of the axial gas power with angle of eccentricity change, thus floats vertically between fixed scroll and stake body.The existence of axial gas power, can not only cause the expansion of compression chamber axial gap, increases leakage, reduces volumetric efficiency, and also results in friction power loss and increase.
The method of balancing axial gas force the most frequently used at present is to adopt back pressure cavity structure, its principle is mainly: introduce in back pressure cavity by back pressure hole by the gas in intermediate compression chamber, under the combined effect of Pressure in Back-pressure Cavity and high pressure chest pressure so that movable orbiting scroll floats and gets up to operate.But in running, effect due to the fluctuation of each cavity pressure and movable orbiting scroll tilting moment, movable orbiting scroll operationally there will be unstable, cause that abrasion occur in movable orbiting scroll and support, performance and the noise of screw compressor are had significant impact by the abrasion of movable orbiting scroll and support, so the abrasion reducing movable orbiting scroll with support of must trying every possible means.
In prior art, some screw compressor arranges on support the buffer of projective table type, it is prevented that the abrasion of thrust bearing surface, reduce the friction loss of movable orbiting scroll and support；Also some arranges the thrust bearing part supporting axial force between support and movable orbiting scroll, it is prevented that the abrasion between support and movable orbiting scroll.But, these structures are very not desirable for the effect reducing abrasion.
Utility model content
The purpose of this utility model is to propose a kind of screw compressor and air-conditioner, is reduced as far as the abrasion between movable orbiting scroll and support.
For achieving the above object, this utility model provides a kind of screw compressor, including movable orbiting scroll with for supporting the support of described movable orbiting scroll, being provided with magnetic suspension structure between described movable orbiting scroll and described support, described magnetic suspension structure is for producing the magnetic force making described movable orbiting scroll suspend.
Further, described magnetic suspension structure includes the first magnet and the second magnet, and described first magnet is arranged at described movable orbiting scroll, and described second magnet is arranged at described support, and the magnetic pole of the same name of described first magnet and described second magnet is positioned opposite.
Further, the surface area relative with described first magnet of described second magnet is more than the surface area relative with described second magnet of described first magnet.
Further, described movable orbiting scroll is provided with the first groove towards the side of described support, and described first magnet is installed in described first groove；And/or described support is provided with the second groove towards the side of described movable orbiting scroll, described second magnet is installed in described second groove.
Further, described first magnet and described first groove are matched in clearance, and are fixed by screw or rivet；And/or described second magnet and described second groove are matched in clearance, and it is fixed by screw or rivet.
Further, it is provided with antimagnetizing layer in described first groove and/or described second groove.
Further, also include the cross slip-ring for preventing described movable orbiting scroll rotation, the side that described cross slip-ring is relative with described movable orbiting scroll is provided with two first projections, said two the first projection is separately mounted to be arranged in two the first grooves of described movable orbiting scroll, the side that described cross slip-ring is relative with described support is provided with two second projections, and said two the second projection is separately mounted to be arranged in two the second grooves of described support.
Further, the line of described first magnet first groove described relative to two is arranged symmetrically with；And/or the line of described second magnet, second groove described relative to two is arranged symmetrically with.
Further, described first magnet and/or described second magnet be shaped as fan ring.
Further, also include the sealing ring for isolating described screw compressor mesohigh chamber and back pressure cavity, described sealing ring is arranged in the o-ring groove being arranged at described support, and described first groove does not communicate with described o-ring groove in the motor process of described movable orbiting scroll.
Further, also including controller, described first magnet and described second magnet is electric magnet, described controller can the startup of described screw compressor and/or properly functioning time control described first magnet and described second magnet obtains electric.
For achieving the above object, this utility model additionally provides a kind of air-conditioner, including above-mentioned screw compressor.
Based on technique scheme, this utility model by arranging suspension structure between movable orbiting scroll and support, make movable orbiting scroll can obtain suspension magnetic force, it is possible to be effectively reduced screw compressor startup stage because of each cavity pressure is not enough, movable orbiting scroll can not quickly suspend and produce abrasion；Simultaneously in the normal course of operation of screw compressor, the suspension magnetic force of movable orbiting scroll can Substitute For Partial fluctuation gas pressure, so that the operating of movable orbiting scroll can be more steady, reduce the abrasion between movable orbiting scroll and support, and then the power consumption of reduction screw compressor, improve the performance of screw compressor.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the part of the application, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of prior art mesoscale eddies compressor.
Fig. 2 is the structural representation of one embodiment of this utility model screw compressor.
Fig. 3 is the explosive view of movable orbiting scroll and support connection structure in one embodiment of this utility model screw compressor.
Fig. 4 is the upward view of movable orbiting scroll in one embodiment of this utility model screw compressor.
Fig. 5 is the top view of one embodiment medium-height trestle of this utility model screw compressor.
In figure: a1-fixed scroll, a2-movable orbiting scroll, a3-cross slip-ring, a4-support, a5-sealing ring, a6-bent axle, 1-fixed scroll, 2-movable orbiting scroll, 3-the first magnet, 4-cross slip-ring, 5-the second magnet, 6-sealing ring, 7-support, 8-bent axle, 9-the first groove, 10-the second groove.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it will be appreciated that, term " " center ", " transverse direction ", " longitudinal direction ", " front ", " afterwards ", " left side ", " right side ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that restriction to this utility model protection domain.
The structure of prior art mesoscale eddies compressor is as it is shown in figure 1, it is mainly made up of pump body portion and motor part, and pump body portion is made up of fixed scroll a1, movable orbiting scroll a2, cross slip-ring a3, support a4, sealing ring a5, bent axle a6 etc..The motor driven crankshafts a6 operating of screw compressor, crank throw on bent axle a6 drives movable orbiting scroll a2 to do the revolution translation without rotation under the effect of cross slip-ring a3, movable orbiting scroll a2 is in suspended state in running, and engage each other with fixed scroll a1, along with the rotation of bent axle a6 forms each compression chamber, thus completing the air-breathing of compressor, compression and aerofluxus.
It is that the power suffered by the movable orbiting scroll a2 back side is more than the power suffered by movable orbiting scroll a2 front (whirlpool increment) that movable orbiting scroll a2 is in the condition of suspended state.Power suffered by the movable orbiting scroll a2 back side mainly includes the pressure of back pressure cavity and pressure two parts of high pressure chest, pressure in back pressure cavity is to be introduced in back pressure cavity by the gas in compression chamber by offering back pressure hole on movable orbiting scroll a2, and the pressure of back pressure cavity and high pressure chest relies primarily on sealing ring a5 and isolates；Power suffered by movable orbiting scroll a2 front mainly includes the pressure two parts suffered by area beyond the pressure of each compression chamber and the compression chamber of movable orbiting scroll a2.
In the development process to screw compressor, inventor have found that the movable orbiting scroll of screw compressor and support have very serious polishing scratch, performance and the noise of screw compressor are had large effect by this.Inventor is through finding the labor of the operation principle of screw compressor and pressure fluctuation test: screw compressor occurs that the reason of serious polishing scratch mainly has following 2 points:
(1) screw compressor startup stage, owing to Suck and exhaust pressure can not quickly reach predetermined value, cause that movable orbiting scroll can not suspend so that movable orbiting scroll and support occur directly to contact, and all there will be polishing scratch in various degree on support and movable orbiting scroll；
(2) screw compressor is in the operation phase, all there is a degree of pressure oscillation in each compression chamber and back pressure cavity, the movable orbiting scroll of the place's of making suspended state can not smoothly operate, add the effect of movable orbiting scroll tilting moment simultaneously, the probability that movable orbiting scroll and support come in contact friction and collision is very big so that movable orbiting scroll produces polishing scratch with support.
Based on above analysis, the utility model proposes a kind of screw compressor, as shown in Figure 2, this screw compressor includes movable orbiting scroll 2 and for supporting the support 7 of described movable orbiting scroll 2, being provided with magnetic suspension structure between described movable orbiting scroll 2 and described support 7, described magnetic suspension structure is for producing the magnetic force making described movable orbiting scroll 2 suspend.
By arranging suspension structure between movable orbiting scroll 2 and support 7 so that movable orbiting scroll 2 can obtain suspension magnetic force, it is possible to be effectively reduced screw compressor startup stage because of each cavity pressure is not enough, movable orbiting scroll 2 can not quickly suspend and produce abrasion；Simultaneously in the normal course of operation of screw compressor, the suspension magnetic force of movable orbiting scroll 2 can Substitute For Partial fluctuation gas pressure, so that the operating of movable orbiting scroll 2 can be more steady, reduce the abrasion between movable orbiting scroll 2 and support 7, and then the power consumption of reduction screw compressor, improve the performance of screw compressor.
Compared with the screw compressor of prior art, the magnetic suspension structure of the screw compressor in above-described embodiment is provided previously by certain suspension magnetic force can to movable orbiting scroll 2, make screw compressor when starting, the back pressure of movable orbiting scroll 2 need not be very big, just can quickly be in quick condition, reduce and contact friction between movable orbiting scroll 2 and support 7；In screw compressor running, when movable orbiting scroll 2 is in suspended state, require that axial force reaches balance, after adopting this magnetic suspension structure, power suffered by movable orbiting scroll 2 back side is except the two-part gas force of high pressure chest and back pressure cavity having pressure oscillation, also include the suspension magnetic force of no pressure fluctuation, this suspension magnetic force can make up the impact of the pressure oscillation of high pressure chest and back pressure cavity, the operating making movable orbiting scroll 2 is more steady, reduce the abrasion between movable orbiting scroll 2 and support 7, improve screw compressor performance.
As shown in Figures 2 and 3, described magnetic suspension structure can include the first magnet 3 and the second magnet 5, described first magnet 3 is arranged at described movable orbiting scroll 2, and described second magnet 5 is arranged at described support 7, and the magnetic pole of the same name of described first magnet 3 and described second magnet 5 is positioned opposite.So, principle according to " different name is attracting; of the same name repel each other ", mutually exclusive magnetic force will be produced between first magnet 3 and the second magnet 5, this magnetic force can so that movable orbiting scroll 2 suspends in time, avoid screw compressor startup stage the not enough impact of each cavity pressure, reduce the abrasion between movable orbiting scroll 2 and support 7.
After screw compressor starts, the motor driven crankshafts 8 of screw compressor operates, crank throw on bent axle 8 drives movable orbiting scroll 2 to do the revolution translation without rotation intermeshing with fixed scroll 1 simultaneously, therefore the first magnet 3 being arranged at movable orbiting scroll 2 is also at kinestate, in order to ensure that the second magnet 5 can cover the scope of the first magnet 3 all the time, the surface area relative with described first magnet 3 surface area relative with described second magnet 5 more than described first magnet 3 of described second magnet 5 can be set, the coverage of the second magnet 5 is more than the plane at the movement locus place of the first magnet 3 in other words.
For how the first magnet 3 and the second magnet 5 being separately mounted on movable orbiting scroll 2 and support 7, it is possible to adopt the mode directly attached, the first magnet 3 and the second magnet 5 are placed directly against the back side of movable orbiting scroll 2 and the upper surface of support 7 respectively；Can also adopting the mode arranging groove, described movable orbiting scroll 2 is provided with the first groove 9 towards the side of described support 7, and described first magnet 3 is installed in described first groove 9；And/or described support 7 is provided with the second groove 10 towards the side of described movable orbiting scroll 2, described second magnet 5 is installed in described second groove 10.This mode can make the first magnet 3 and the second magnet 5 be separately positioned on movable orbiting scroll 2 and the inside of support 7, it is to avoid the contact surface between movable orbiting scroll 2 and support 7 produces gap, can avoid gas leakage in compressor.
Can be interference fit between described first magnet 3 and described first groove 9, it can also be matched in clearance, and be fixed by screw or rivet, the assembling mode of matched in clearance can avoid the substrate of movable orbiting scroll 2 deformation occur, and then affects the whirlpool tooth precision of movable orbiting scroll 2.
Similarly, can be interference fit between described second magnet 5 and described second groove 10, it is also possible to for matched in clearance, and be fixed by screw or rivet, the assembling mode of matched in clearance can avoid support 7 deformation occur, affects the welding precision of support and housing.
If the material of movable orbiting scroll 2 and support 7 is easily magnet magnetized, antimagnetizing layer can be provided with in described first groove 9 and/or described second groove 10, the antimagnetizing layer being arranged in the first groove 9 is possible to prevent movable orbiting scroll 2 to be magnetized, and the antimagnetizing layer being arranged in the second groove 10 is possible to prevent support 7 to be magnetized.Such as, it is possible to plastics rubber cushion etc. is first installed in the first groove 9 and/or the second groove 10 there is the material of antimagnetizing function, then the first magnet 3 and the second magnet 5 are installed in the groove with plastics rubber cushion, it is ensured that movable orbiting scroll 2 and support 7 will not be magnetized.
Screw compressor could be included for preventing the cross slip-ring 4 of described movable orbiting scroll 2 rotation, the side that described cross slip-ring 4 is relative with described movable orbiting scroll 4 is provided with two first projections, said two the first projection is separately mounted to be arranged in two the first grooves of described movable orbiting scroll 2, the side that described cross slip-ring 4 is relative with described support 7 is provided with two second projections, and said two the second projection is separately mounted to be arranged in two the second grooves of described support 7.
The concrete arrangement of the first magnet 3 and the second magnet 5 can have multiple, and such as the first magnet 3 can the line of first groove described relative to two be arranged symmetrically with；Described second magnet 5 can the line of second groove described relative to two be arranged symmetrically with, and the magnetic force ratio that movable orbiting scroll 2 is subject to so can be made more uniform.
The shape of the first magnet 3 and the second magnet 5 can also have multiple, such as, described first magnet 3 and/or described second magnet 5 be shaped as fan ring, as shown in Figure 3, first magnet 3 all includes size with the second magnet 5, shape is identical two pieces, certainly, the first magnet 3 and the second magnet can also include polylith, shape can also be more various, such as circular or square etc..
First groove 9 and arranging of the second groove 10 can correspondingly match with the version of the first magnet 3 and the second magnet 5 respectively, structure for the first magnet 3 as shown in Figure 3 and the second magnet 5, first arranging of groove 9 can be as shown in Figure 4, including the fan cannelure that two radians are identical, it is symmetrically distributed in the line both sides of two the first grooves of movable orbiting scroll 2；Second groove 10 as it is shown in figure 5, include two identical fan cannelures of radian, can be symmetrically distributed in the line both sides of two the second grooves of support 7.
As shown in Figure 2, screw compressor could be included for isolating the sealing ring 6 of described screw compressor mesohigh chamber and back pressure cavity, described sealing ring 6 is arranged in the o-ring groove being arranged at described support 7, described first groove 9 does not communicate with described o-ring groove in the motor process of described movable orbiting scroll 2, avoid the high pressure chest phenomenon to back pressure cavity gas leakage, increase the power consumption of compressor, reduce the performance of compressor.
Additionally, after screw compressor in this utility model embodiment adopts magnetic suspension structure, it is possible to not offering back pressure cavity structure, the suffered power at such movable orbiting scroll 2 back side is made up of the gas force of suspend magnetic force and high pressure chest, by controlling the size of magnetic force, the equally possible effect reaching to make movable orbiting scroll 2 suspend.
First magnet 3 and the second magnet 5 can be permanent magnet, it is also possible at least one is electric magnet.For ease of operation and raising control accuracy, screw compressor can also include controller, described first magnet 3 and described second magnet 5 are electric magnet, described controller can the startup of described screw compressor and/or properly functioning time control described first magnet 3 and described second magnet 5 electric.As such, it is possible to strengthen the control performance of screw compressor, the node to the first magnet 3 and the energising of the second magnet 5 and persistent period can also be controlled by controller, to adapt to the movable orbiting scroll 2 different needs in startup and operation phase.
Screw compressor in each embodiment of this utility model can apply in the equipment such as air-conditioner.
Explanation by the multiple embodiments to this utility model screw compressor and air-conditioner, it can be seen that this utility model screw compressor and air-conditioner embodiment can efficiently solve screw compressor startup stage make movable orbiting scroll quickly not suspend owing to movable orbiting scroll backside pressure is less problem, reduce the friction that contacts between movable orbiting scroll and support supporting surface, reduce abrasion；Can also solve in screw compressor operation process, owing to the gas pressure in each chamber fluctuates and the combined effect of movable orbiting scroll tilting moment and the problem that causes movable orbiting scroll and support to produce abrasion, it is to avoid the increase of screw compressor power consumption, the reduction of screw compressor performance and produce bigger noise etc..
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit；Although this utility model being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to detailed description of the invention of the present utility model or portion of techniques feature carries out equivalent replacement；Without deviating from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that this utility model is claimed.
Claims (12)
1. a screw compressor, it is characterized in that, including movable orbiting scroll (2) be used for supporting the support (7) of described movable orbiting scroll (2), being provided with magnetic suspension structure between described movable orbiting scroll (2) and described support (7), described magnetic suspension structure is used for the magnetic force that generation makes described movable orbiting scroll (2) suspend.
2. screw compressor according to claim 1, it is characterized in that, described magnetic suspension structure includes the first magnet (3) and the second magnet (5), described first magnet (3) is arranged at described movable orbiting scroll (2), described second magnet (5) is arranged at described support (7), and the magnetic pole of the same name of described first magnet (3) and described second magnet (5) is positioned opposite.
3. screw compressor according to claim 2, it is characterized in that, the surface area relative with described first magnet (3) of described second magnet (5) is more than the surface area relative with described second magnet (5) of described first magnet (3).
4. the screw compressor according to Claims 2 or 3, it is characterized in that, described movable orbiting scroll (2) is provided with the first groove (9) towards the side of described support (7), and described first magnet (3) is installed in described first groove (9)；And/or described support (7) is provided with the second groove (10) towards the side of described movable orbiting scroll (2), described second magnet (5) is installed in described second groove (10).
5. screw compressor according to claim 4, it is characterised in that described first magnet (3) and described first groove (9) are matched in clearance, and are fixed by screw or rivet；And/or described second magnet (5) and described second groove (10) are matched in clearance, and it is fixed by screw or rivet.
6. screw compressor according to claim 4, it is characterised in that be provided with antimagnetizing layer in described first groove (9) and/or described second groove (10).
7. screw compressor according to claim 2, it is characterized in that, also include the cross slip-ring (4) for preventing described movable orbiting scroll (2) rotation, the side that described cross slip-ring (4) is relative with described movable orbiting scroll (2) is provided with two first projections, said two the first projection is separately mounted to be arranged in two the first grooves of described movable orbiting scroll (2), the side that described cross slip-ring (4) is relative with described support (7) is provided with two second projections, said two the second projection is separately mounted to be arranged in two the second grooves of described support (7).
8. screw compressor according to claim 7, it is characterised in that the line of described first magnet (3) first groove described relative to two is arranged symmetrically with；And/or the line of described second magnet (5), second groove described relative to two is arranged symmetrically with.
9. screw compressor according to claim 8, it is characterised in that described first magnet (3) and/or described second magnet (5) be shaped as fan ring.
10. screw compressor according to claim 4, it is characterized in that, also include the sealing ring (6) for isolating described screw compressor mesohigh chamber and back pressure cavity, described sealing ring (6) is arranged in the o-ring groove being arranged at described support (7), and described first groove (9) does not communicate with described o-ring groove in the motor process of described movable orbiting scroll (2).
11. screw compressor according to claim 2, it is characterized in that, also include controller, described first magnet (3) and described second magnet (5) are electric magnet, described controller can the startup of described screw compressor and/or properly functioning time control described first magnet (3) and described second magnet (5) electric.
12. an air-conditioner, it is characterised in that include the screw compressor as described in any one of claim 1～11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620100103.XU CN205370973U (en) | 2016-02-01 | 2016-02-01 | Scroll compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620100103.XU CN205370973U (en) | 2016-02-01 | 2016-02-01 | Scroll compressor and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN205370973U true CN205370973U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620100103.XU Active CN205370973U (en) | 2016-02-01 | 2016-02-01 | Scroll compressor and air conditioner |
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| CN (1) | CN205370973U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485005A (en) * | 2016-02-01 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner |
| CN109113961A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113950A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113959A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113952A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
-
2016
- 2016-02-01 CN CN201620100103.XU patent/CN205370973U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485005A (en) * | 2016-02-01 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor and air conditioner |
| CN109113961A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113950A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113959A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113952A (en) * | 2017-06-26 | 2019-01-01 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
| CN109113959B (en) * | 2017-06-26 | 2021-02-23 | 比亚迪股份有限公司 | Electric oil pump assembly, steering system and lubricating system |
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