CN107327339A - Water pump and the vehicle with it - Google Patents
Water pump and the vehicle with it Download PDFInfo
- Publication number
- CN107327339A CN107327339A CN201610284427.8A CN201610284427A CN107327339A CN 107327339 A CN107327339 A CN 107327339A CN 201610284427 A CN201610284427 A CN 201610284427A CN 107327339 A CN107327339 A CN 107327339A
- Authority
- CN
- China
- Prior art keywords
- water pump
- pump
- housing
- impeller
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/24—Hybrid vehicles
Abstract
The invention provides a kind of water pump and the vehicle with it, water pump includes：Holding tank is provided with housing, the housing；Pump shaft, the pump shaft be at least partially disposed in the housing and can around the pump shaft center axis thereof；Impeller, the impeller is arranged on outside the housing and relative with the receiving groove location, and the impeller is fixed with the pump shaft；Hydraulic drive mechanism, the hydraulic drive mechanism is connected with the impeller and is axially moveable to change the degree that the impeller extends into or out the holding tank by pump shaft described in hydraulic-driven.Hydraulic drive mechanism can change the degree that impeller stretched into or stretched out holding tank, so as to which water pump can adjust pump water, the pump water of water pump can match with engine operating condition, and then can improve the fuel efficiency of engine and improve discharge, can improve the performance of engine.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of water pump and the vehicle with the water pump.
Background technology
Engine water pump in correlation technique typically uses conventional mechanical formula water pump, and the pump water of mechanical water pump is according to engine
Full load mode cooling requirement and design, but engine be in cold start-up, warming-up and small load condition under, mechanical water pump pump
Water is more than engine cool demand, and the burning that can extend in engine warm-up time, and warming-up process is insufficient also to be caused
Burn soot, discharge the adverse consequences such as exceeded.
Cooling system is controlled using engine thermal management module more than some advanced engines, circulated by designing complicated coolant
Controlling organization and connecting line realize coolant regulation of the engine under different operating modes, but such a cooling system structure it is complicated and
Space hold is big, can greatly increase engine component quantity, causes engine weight increase, cost increase.
The content of the invention
In view of this, the present invention is directed to propose a kind of water pump, to solve the problem of water pump can not match engine operating condition.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of water pump, including：Holding tank is provided with housing, the housing；Pump shaft, the pump shaft is set at least in part
Put in the housing and can around the pump shaft center axis thereof；Impeller, the impeller be arranged on outside the housing and
Relative with the receiving groove location, the impeller is fixed with the pump shaft；Hydraulic drive mechanism, the hydraulic drive mechanism with
The impeller is connected and is axially moveable by pump shaft described in hydraulic-driven extends into or out the receiving to change the impeller
The degree of groove.
Further, the water pump also includes：Flexible restoring organ, the flexible restoring organ and the pump shaft resilient engagement
And for providing the elastic reset power opposite with hydraulic coupling to the pump shaft.
Further, the housing includes：Oil pocket, the one of the pump shaft are formed with enclosure body and end cap, the end cap
End is sealingly fitted in the oil pocket and relatively described oil pocket is axially movable.
Further, the hydraulic drive mechanism includes：Hydrostatic sensor, hydraulic control valve and hydraulic circuit, the hydraulic pressure are passed
Sensor is connected with the oil pocket and electrically connected with the hydraulic control valve, and the hydraulic control valve is examined according to the hydrostatic sensor
Hydraulic circuit described in the oil pocket oil pressure cntrol of survey passes in and out the oil mass of the oil pocket.
Further, the water pump also includes：Sliding block, the sliding block is set on the pump shaft, the flexible restoring organ
For spring, the spring housing is on the pump shaft and flexibly compresses the sliding block.
Further, the water pump also includes：Guide pad, the guide pad is fixed in the housing, and the guide pad has
The second spigot surface is provided with first spigot surface, the sliding block, first spigot surface coordinates with the second spigot surface face face.
Further, it is provided with the guide pad on axial projection, the inwall of the housing and is formed with axial notch, the axle
It is located to projection in the axial notch.
Further, it is provided with water pump shaft gear on the pump shaft；And the water pump also includes：Drive shaft, the driving
Axle shaft gear is provided with axle, the axle shaft gear is engaged with the water pump shaft gear, one end of the drive shaft is from described
Housing extends from inside to outside.
Further, the sliding block is located between the water pump shaft gear and the flexible restoring organ.
Relative to prior art, water pump of the present invention has the advantage that：
According to the water pump of the present invention, hydraulic drive mechanism can adjust impeller by driving pump shaft axial movement and stretch into or stretch
Go out the degree of holding tank, so as to adjust the pump water of water pump, and then the pump water and engine operating condition phase of water pump can make it that
Matching, can improve fuel efficiency and the waste gas discharge of engine, can improve the performance of engine.
Another object of the present invention is to propose a kind of vehicle.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of vehicle, including above-mentioned water pump.
The vehicle has the advantage that identical with above-mentioned water pump relative to prior art, will not be repeated here.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, illustrative examples of the invention and
It illustrates to be used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the explosive view of the water pump described in the embodiment of the present invention；
Fig. 2 is the end cap schematic diagram of the water pump described in the embodiment of the present invention；
Fig. 3 is the schematic diagram of the enclosure body of the water pump described in the embodiment of the present invention.
Description of reference numerals：
Water pump 100；
Housing 10；Holding tank 11；Enclosure body 12；End cap 13；Oil pocket 14；
Pump shaft 20；Sliding block 21；Second spigot surface 21a；Water pump shaft gear 22；
Impeller 30；Hydraulic control valve 41；Hydraulic circuit 42；Flexible restoring organ 50；
Guide pad 70；First spigot surface 71；Axial projection 72；
Drive shaft 80；Axle shaft gear 81；Belt pulley 90.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Describe the water pump 100 of the embodiment of the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments, the water pump 100 can answer
In the cooling system of vehicle.
Water pump 100 according to embodiments of the present invention can include：Housing 10, pump shaft 20, impeller 30 and hydraulic drive mechanism.
As shown in figure 3, being provided with holding tank 11 on housing 10, impeller 30 is arranged on outside housing 10, and impeller 30 is with accommodating
The position of groove 11 is relative, and such impeller 30 can be arranged in holding tank 11, wherein, alternatively, the depth of holding tank 11 can
With the thickness more than or equal to impeller 30.Thus, impeller 30 can be fully accommodated in holding tank 11 within a certain period of time,
Now the pump water of water pump 100 is zero.
Pump shaft 20 is at least partially disposed in housing 10, and water pump 100 can turn around the central axis of pump shaft 20
Dynamic, impeller 30 is fixed with pump shaft 20.Thus, pump shaft 20 can be rotated with impeller 30.Hydraulic drive mechanism and leaf
Wheel 30 is connected, and by hydraulic-driven pump shaft 20, (left and right directions i.e. shown in Fig. 1) is moved hydraulic drive mechanism vertically
Move to change the degree that impeller 30 extends into or out holding tank 11.Thus, hydraulic drive mechanism can change impeller 30 and stretch into
Or the degree of holding tank 11 is stretched out, such water pump 100 can be stretched into or stretched out according to the regulating working conditions impeller 30 of engine
The degree of holding tank 11, so that water pump 100 can adjust pump water to meet requirement of each operating mode of engine to coolant.
Stretching into or stretching out between the degree and engine operating condition of holding tank 11 for the impeller 30 of water pump 100 is described below in detail
Relation.Under engine cold-start, warming-up operating mode, impeller 30 is fully inserted into holding tank 11, and water pump 100 0 supplies water, from
And can ensure that engine is rapidly achieved best combustion temperature, improve burning and discharge；In small engine load and sub-load work
Under condition, the regulation impeller 30 of water pump 100 stretches out the degree of holding tank 11, and water pump 100 continuously adjusts pump with Different Work Condition of Engine
Water, control engine lifts fuel efficiency in the stable burning of optimum temperature point；And in full speed full load mode, impeller 30 is complete
Holding tank 11 is stretched out, the pump water of water pump 100 reaches maximum, now, the cooling effectiveness highest of engine, so as to suppress
Pinking, improves parts and is deformed by high heat load, it is ensured that product reliability.
According to a preferred embodiment of the present invention, as shown in figure 1, water pump 100 can also include：Flexible restoring organ 50,
Flexible restoring organ 50 and the resilient engagement of pump shaft 20, and flexible restoring organ 50 can be used for pump shaft 20 provide with
The opposite elastic reset power of hydraulic coupling.So, when hydraulic drive mechanism is stopped, flexible restoring organ 50 can drive
Pump shaft 20 is returned to initial position, and impeller 30 can be fully accommodated in holding tank 11, now, the pump water of water pump 100
Amount is zero.And when hydraulic drive mechanism is started working, the hydraulic coupling produced by hydraulic drive mechanism needs to overcome elastic force
To drive pump shaft 20 to move axially to cause impeller 30 to stretch out holding tank 11, so that the movement of pump shaft 20 is stable,
It can ensure that hydraulic drive mechanism drives the reliability of pump shaft 20, the functional reliability of water pump 100 can be improved.
According to the specific embodiment of the present invention, as shown in figure 1, housing 10 can include：Enclosure body 12 and end cap 13,
Oil pocket 14 is formed with end cap 13, one end of pump shaft 20 is sealingly fitted in oil pocket 14, and one end of pump shaft 20
It is axially movable with respect to oil pocket 14.Thus, hydraulic drive mechanism can be by controlling the fluid capacity in oil pocket 14 to adjust water
The axial movement state of pump shaft 20, so as to realize that regulation impeller 30 stretches into or stretched out the degree of holding tank 11, and then
The pump water of regulation water pump 100 can be realized.
Alternatively, with reference to shown in Fig. 1 and Fig. 2, hydraulic drive mechanism can include：Hydraulic control valve 41, hydraulic circuit 42
And hydrostatic sensor, hydrostatic sensor is connected with oil pocket 14, and hydrostatic sensor is electrically connected with hydraulic control valve 41, hydraulic pressure
The oil pocket oil pressure cntrol hydraulic circuit 42 that control valve 41 is detected according to hydrostatic sensor passes in and out the oil mass of oil pocket 14.Wherein liquid
Detection oil circuit is connected between pressure sensor and oil pocket 14.Hydrostatic sensor can detect the oil pressure in oil pocket 14, oil pocket in real time
Oil pressure in 13 can feed back the degree that impeller 30 stretches out holding tank 11, and such hydraulic control valve 41 may determine that now water
Whether the pump water of pump 100 meets the operating mode of engine, if not meeting engine operating condition, the control hydraulic pressure of hydraulic control valve 41
The fluid outflow oil pocket 14 that fluid in oil circuit 42 enters in oil pocket 14, or control hydraulic circuit 42, so as to adjust
The oil pressure of oil pocket 14, can adjust impeller 30 and stretch out the degree of holding tank 11, and then can cause the pump water of water pump 100
Meet engine operating condition.Thus, hydraulic drive mechanism can adjust the journey that impeller 30 stretches out holding tank 11 according to engine operating condition
Degree, so that the pump water of water pump 100 meets engine operating condition, and then can improve the efficiency of engine.
Preferably, as shown in figure 1, water pump 100 can also include：Sliding block 21, sliding block 21 is set on pump shaft 20, bullet
Property resetting-mechanism 20 can be spring, spring housing is on pump shaft 20 and flexibly compresses sliding block 21.Thus, spring can bullet
Property low pressure between sliding block 21 and enclosure body 12, when hydraulic drive mechanism is stopped, spring can pass through sliding block 21
Driving pump shaft 20 is moved to the left, so that impeller 30 is gradually stretched into holding tank 11, until impeller 30 is stretched completely
Enter holding tank 11.
According to the specific embodiment of the present invention, as shown in figure 1, water pump 100 can also include：Guide pad 70, guide pad
70 are fixed in housing 10, and guide pad 70 has is provided with the second spigot surface 21a on the first spigot surface 71, sliding block 21, the
One spigot surface 71 and the second spigot surface 21a faces face coordinate.Wherein, guide pad 70 can be cylinder, the first spigot surface 71
Can be arc, sliding block 21 is the cylinder with arc groove, and the second spigot surface 21a is the wall of arc groove, and first is oriented to
Face 71 can be with identical, so as to be easy to the second spigot surface 21a to coordinate in the first spigot surface with the second spigot surface 21a radian
On 71.Thus, by setting the first spigot surface 71 and the second spigot surface 21a, it can make it that slide plate axial movement is stable, from
And the axial movement stability of pump shaft 20 can be further improved, the functional reliability of water pump 100 can be improved.
Alternatively, as shown in figure 1, axial projection 72 can be provided with guide pad 70, axle is formed with the inwall of housing 10
To groove, axial projection 72 is located in axial notch.The cooperation of axial projection 72 and axial notch can effectively prevent guide pad
70 relative housings 10 are circumferentially rotated, and so as to better ensure that slide plate is moved axially, can better ensure that water pump 100
Functional reliability.
Alternatively, as shown in figure 1, water pump shaft gear 22 can be provided with pump shaft 20；Water pump 100 can also include：
Axle shaft gear 81 is provided with drive shaft 80, drive shaft 80, axle shaft gear 81 is engaged with water pump shaft gear 22, driven
Extend from inside to outside from housing 10 one end of axle 80.Water pump 100 can also include belt pulley 90, the external part of drive shaft 80
It can be fixed on belt pulley 90.So, under the drive of belt pulley 90, drive shaft 80 can pass through axle shaft gear 81
Engagement with water pump shaft gear 22 drives pump shaft 20 to rotate, so as to realize the rotation of impeller 30, it is possible to achieve water pump
100 pump water., wherein it is desired to explanation, the other end of drive shaft 80 can coordinate in guide pad 70, drive shaft 80
Block 70 can be oppositely oriented to rotate, such guide pad 70 can cause the Stability Analysis of Structures of water pump 100 and reliable.Alternatively, sliding block
21 are arranged between water pump shaft gear 22 and flexible restoring organ 50.
Water pump 100 according to embodiments of the present invention, hydraulic drive mechanism can be by driving the axial movement of pump shaft 20 to adjust leaf
Wheel 30 stretches into or stretched out the degree of holding tank 11, so as to adjust the pump water of water pump 100, and then can cause water pump
100 pump water matches with engine operating condition, can improve fuel efficiency and the waste gas discharge of engine, can improve engine
Performance.
Vehicle according to embodiments of the present invention, includes the water pump 100 of above-described embodiment, because the water pump 100 of above-described embodiment is wrapped
Hydraulic drive mechanism is included, so as to adjust the degree that impeller 30 stretched into or stretched out holding tank 11 by hydraulic drive mechanism,
The pump water of water pump 100 can be adjusted, and then the pump water of water pump 100 can be caused to match with engine operating condition, Ke Yigai
The fuel efficiency of kind engine and waste gas discharge, can improve the performance of engine.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all spiritual and originals in the present invention
Within then, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of water pump (100), it is characterised in that including：
Holding tank (11) is provided with housing (10), the housing (10)；
Pump shaft (20), the pump shaft (20) is at least partially disposed in the housing (10) and can be around the water pump
The center axis thereof of axle (20)；
Impeller (30), the impeller (30) be arranged on outside the housing (10) and with the holding tank (11) position phase
Right, the impeller (30) is fixed with the pump shaft (20)；
Hydraulic drive mechanism, the hydraulic drive mechanism is connected with the impeller (30) and by pump shaft described in hydraulic-driven (20)
It is axially moveable to change the degree that the impeller (30) extends into or out the holding tank (11).
2. water pump (100) according to claim 1, it is characterised in that also include：Flexible restoring organ (50), institute
Flexible restoring organ (50) is stated with the pump shaft (20) resilient engagement and for being provided and hydraulic pressure to the pump shaft (20)
The opposite elastic reset power of power.
3. water pump (100) according to claim 2, it is characterised in that the housing (10) includes：Enclosure body
(11) oil pocket (14) and end cap (13), is formed with the end cap (13), one end of the pump shaft (20) is hermetically
Coordinate in the oil pocket (14) and relatively described oil pocket (14) is axially movable.
4. water pump (100) according to claim 3, it is characterised in that the hydraulic drive mechanism includes：Hydraulic pressure control
Valve (41) processed, hydraulic circuit (42) and hydrostatic sensor, the hydrostatic sensor be connected with the oil pocket (14) and with institute
State hydraulic control valve (41) electrical connection, the oil pocket oil pressure that the hydraulic control valve (41) is detected according to the hydrostatic sensor
The hydraulic circuit (42) is controlled to pass in and out the oil mass of the oil pocket (14).
5. water pump (100) according to claim 4, it is characterised in that also include：Sliding block (21), the sliding block (21)
It is set on the pump shaft (20), the flexible restoring organ (50) is spring, and the spring housing is in the pump shaft (20)
Compress above and flexibly the sliding block (21).
6. water pump (100) according to claim 5, it is characterised in that also include：Guide pad (70), it is described to be oriented to
Block (70) is fixed in the housing (10), and the guide pad (70) has the first spigot surface (71), the sliding block (21)
On be provided with the second spigot surface (21a), first spigot surface (71) coordinates with the second spigot surface (21a) face face.
7. water pump (100) according to claim 6, it is characterised in that be provided with axial direction on the guide pad (70)
Axial notch is formed with raised (72), the inwall of the housing (10), the axial projection (72) is located at the axial direction
In groove.
8. water pump (100) according to claim 5, it is characterised in that be provided with water pump on the pump shaft (20)
Shaft gear (22)；And
The water pump (100) also includes：Axle shaft gear (81) is provided with drive shaft (80), the drive shaft (80),
The axle shaft gear (81) is engaged with the water pump shaft gear (22), and one end of the drive shaft (80) is from the housing
(10) extend from inside to outside.
9. water pump (100) according to claim 8, it is characterised in that the sliding block (21) is located at the pump shaft
Between gear (22) and the flexible restoring organ (50).
10. a kind of vehicle, it is characterised in that including the water pump (100) according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284427.8A CN107327339B (en) | 2016-04-28 | 2016-04-28 | Water pump and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284427.8A CN107327339B (en) | 2016-04-28 | 2016-04-28 | Water pump and vehicle with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107327339A true CN107327339A (en) | 2017-11-07 |
| CN107327339B CN107327339B (en) | 2020-01-07 |
Family
ID=60193344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610284427.8A Active CN107327339B (en) | 2016-04-28 | 2016-04-28 | Water pump and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107327339B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108399293A (en) * | 2018-02-11 | 2018-08-14 | 合肥市太泽透平技术有限公司 | A kind of circulation system design with one-dimensional algorithm slitless connection analyzes multifunctional platform |
Citations (7)
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|---|---|---|---|---|
| US5800120A (en) * | 1995-11-07 | 1998-09-01 | A. W. Chesterton Co. | Pump impeller with adjustable blades |
| US20100006044A1 (en) * | 2008-07-14 | 2010-01-14 | Honda Motor Co., Ltd. | Variable capacity water pump via electromagnetic control |
| KR101264576B1 (en) * | 2012-11-08 | 2013-05-14 | 지엠비코리아 주식회사 | Water pumber for cooling water of engine |
| CN103277343A (en) * | 2013-06-26 | 2013-09-04 | 长城汽车股份有限公司 | Water pump for vehicle internal combustion engine cooling system |
| CN103775812A (en) * | 2014-01-26 | 2014-05-07 | 浙江吉利控股集团有限公司 | Variable displacement rotor oil pump |
| CN103835991A (en) * | 2014-02-27 | 2014-06-04 | 长城汽车股份有限公司 | Water pump and vehicle provided with same |
| US20160040584A1 (en) * | 2014-08-05 | 2016-02-11 | Schaeffler Technologies AG & Co. KG | Electro-mechanical drive mechanism for an impeller shroud of a variable water pump |
-
2016
- 2016-04-28 CN CN201610284427.8A patent/CN107327339B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5800120A (en) * | 1995-11-07 | 1998-09-01 | A. W. Chesterton Co. | Pump impeller with adjustable blades |
| US20100006044A1 (en) * | 2008-07-14 | 2010-01-14 | Honda Motor Co., Ltd. | Variable capacity water pump via electromagnetic control |
| KR101264576B1 (en) * | 2012-11-08 | 2013-05-14 | 지엠비코리아 주식회사 | Water pumber for cooling water of engine |
| CN103277343A (en) * | 2013-06-26 | 2013-09-04 | 长城汽车股份有限公司 | Water pump for vehicle internal combustion engine cooling system |
| CN103775812A (en) * | 2014-01-26 | 2014-05-07 | 浙江吉利控股集团有限公司 | Variable displacement rotor oil pump |
| CN103835991A (en) * | 2014-02-27 | 2014-06-04 | 长城汽车股份有限公司 | Water pump and vehicle provided with same |
| US20160040584A1 (en) * | 2014-08-05 | 2016-02-11 | Schaeffler Technologies AG & Co. KG | Electro-mechanical drive mechanism for an impeller shroud of a variable water pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108399293A (en) * | 2018-02-11 | 2018-08-14 | 合肥市太泽透平技术有限公司 | A kind of circulation system design with one-dimensional algorithm slitless connection analyzes multifunctional platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107327339B (en) | 2020-01-07 |
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