CN106151055A - Electric drive pump - Google Patents
Electric drive pump Download PDFInfo
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- CN106151055A CN106151055A CN201510136752.5A CN201510136752A CN106151055A CN 106151055 A CN106151055 A CN 106151055A CN 201510136752 A CN201510136752 A CN 201510136752A CN 106151055 A CN106151055 A CN 106151055A
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- pump
- separation sleeve
- bonnet
- bearing
- pump housing
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Abstract
A kind of electric drive pump includes that pump cover, the pump housing, impeller, bonnet, pump shaft, motor part and ECU, pump cover and the pump housing fix formation for the impeller cavity accommodating impeller；The pump housing and bonnet are fixed and are formed the first receiving chamber accommodating motor part；Rotor and impeller all can rotate；Electric drive pump also includes a separation sleeve, and the first receiving chamber is divided into bore of stator and rotor chamber by separation sleeve, and bore of stator does not connects with impeller cavity, rotor chamber directly or indirectly connects with impeller cavity, bore of stator is arranged closer to pump shaft than rotor chamber, and stator is arranged in bore of stator, and rotor is arranged in rotor chamber；One end of separation sleeve is wholely set with the pump housing or bonnet, reduces parts, simultaneously ease of assembly.
Description
[technical field]
The present invention relates to a kind of centrifugal pump, be specifically related to a kind of electric drive pump.
[background technology]
In recent decades, automobile industry fast development, along with automotive performance is towards safer, more reliable,
More stable, full-automatic intelligent and environmental protection and energy saving direction are developed.Electric drive pump replaces tradition the most gradually
Mechanical pump, and applied in a large number in vehicle radiator blood circulation.Electric drive pump has to be done without electromagnetism
Disturb, high-efficiency environment friendly, the advantage such as stepless time adjustment, be well positioned to meet the requirement in market.
The stator module of electric drive pump and rotor assembly are completely isolated by separation sleeve, it is to avoid traditional electricity
The fluid leakage problems that machine formula brushless direct-current water pump exists；At present, in order to improve the dismounting of electric drive pump
Maintenance ensures the sealing of electric drive pump simultaneously, is provided with and organizes sealing ring more, makes electric drive pump in assembling
Time need to note the sealing of multiple sealing ring simultaneously, be unfavorable for install.
Therefore, it is necessary to existing technology is improved, to solve above technical problem.
[summary of the invention]
It is an object of the invention to provide a kind of simple in construction, it is simple to the electric drive pump dismounting and assembling.
For achieving the above object, the present invention adopts the following technical scheme that a kind of electric drive pump, including pump
Lid, the pump housing, impeller, bonnet, pump shaft, motor part and ECU, described pump cover is with described
The pump housing fixes formation for the impeller cavity accommodating described impeller；The described pump housing and the fixing formation of described bonnet
Accommodate the first receiving chamber of described motor part；Described motor section is divided and is included stator and rotor, described turn
Son drives described wheel rotation by pump shaft；Described electric drive pump also includes a separation sleeve, described isolation
Overlap and described first receiving chamber is divided into bore of stator and rotor chamber, the most described bore of stator of described rotor chamber
Near described pump shaft, described bore of stator does not connects with described impeller cavity, described rotor chamber and described impeller
Chamber directly or indirectly connects, and described stator is arranged in described bore of stator, and described rotor is arranged at institute
State in rotor chamber；Described ECU and described motor section divide cooperating, and described ECU controls
The operation of described motor part；One end of described separation sleeve integrally sets with the described pump housing or described bonnet
Putting, the free end of described separation sleeve is spacing by the pump housing or the bonnet not being wholely set with described separation sleeve
And form opposing seal chamber, prevent the working media in described rotor chamber from getting involved described bore of stator.
Described separation sleeve is metal material, and based on described separation sleeve, part forms described pump through injection
Body and the part joined integrally of separation sleeve, the described pump housing includes top and sidewall, and described separation sleeve is with described
Top is fixedly installed, and the medial surface at described top is formed with the clutch shaft bearing of pump shaft described in limited support
Clutch shaft bearing mounting seat；Clutch shaft bearing mounting seat includes first annular projection, described first annular projection
The outer peripheral face tight fit of medial surface and described clutch shaft bearing arrange.
The free end of described separation sleeve is fixed on the installation portion that described bonnet is arranged, and described bonnet includes
Surface and lower surface, the upper surface of described bonnet arranges oriented described first and accommodates the of chamber internal protrusion
Second ring is protruding and the 3rd annular protrusion, and it is recessed that described installation portion includes being formed between adjacent annular projection
Groove, the free end of described separation sleeve inserts described second annular protrusion outer peripheral face and described 3rd convex annular
Play inner peripheral surface to be formed in groove, and form opposing seal by extruding O-ring seal.
Described electric drive pump includes for spacing or support clutch shaft bearing and second bearing of described pump shaft,
The upper surface of described bonnet is provided with the second bearing mounting base for accommodating described second bearing, described
Second bearing mounting base includes described second annular protrusion inner peripheral surface, described second annular protrusion inner peripheral surface
Arrange with the outer surface tight fit of described second bearing.
Described electric drive pump includes for spacing or support clutch shaft bearing and second bearing of described pump shaft；
Described separation sleeve is metal material, based on described separation sleeve part through injection formed described bonnet with
The part joined integrally of described separation sleeve, described separation sleeve is arranged at the upper surface of described bonnet, described after
Lid is formed with clutch shaft bearing mounting seat, and described clutch shaft bearing mounting seat is used for accommodating described clutch shaft bearing；
Described clutch shaft bearing mounting seat includes the first annular projection forming in the upper surface of described bonnet, described
The outer surface of clutch shaft bearing is arranged with the inner peripheral surface tight fit of described first annular projection.
The free end of described separation sleeve is fixed on the installation portion that the described pump housing is arranged, and the described pump housing includes top
Portion and sidewall, described installation portion is arranged at described top, and described top arranges oriented described first and accommodates
Second annular protrusion of intracavity portion protrusion and the 3rd annular protrusion, described mounting part includes adjacent ring
The groove formed between shape projection, the free end of described separation sleeve inserts described second annular protrusion periphery
Face and described 3rd annular protrusion inner peripheral surface are formed in groove, and are formed close by extruding O-ring seal
Envelope.
The inner surface at described top is provided with the second bearing mounting base of the second bearing for accommodating, institute
State the second bearing mounting base and include described second annular protrusion inner peripheral surface, described second annular protrusion inner circumferential
Face is arranged with the outer surface tight fit of described second bearing.
Described separation sleeve is plastic material, and described bonnet is plastic material, described separation sleeve with described after
Covering and form integrative-structure through once injection or quadric injection mould, the free end of described separation sleeve inserts described pump
In the groove that body is arranged, the fixed part arranged by the described pump housing is fixed.
The described pump housing arranges and accommodates, to described first, first annular projection and the second convex annular that chamber is protruded
Rising, described fixed part includes the groove between described first annular projection and described second annular protrusion,
The free end of described separation sleeve inserts in described groove, the bottom of described groove and described separation sleeve from
By being provided with between end and arranging the O-ring seal free end at described separation sleeve with described at connecting portion
Connecting portion between bottom portion of groove is formed and seals.
Described bonnet arranges clutch shaft bearing mounting seat, and the described pump housing is provided with the second bearing mounting base, institute
Stating clutch shaft bearing and be installed on described clutch shaft bearing mounting seat, described second bearing is installed on described second axle
Hold mounting seat, described clutch shaft bearing outer peripheral face and described clutch shaft bearing mounting seat tight fit, described second
Inside bearing outer peripheral face and described second bearing mounting base tight fit, described pump shaft and described clutch shaft bearing
The medial surface of face and described second bearing is respectively formed tight fit.
Compared with prior art, the present invention, can by being wholely set with bonnet or the pump housing by separation sleeve
To reduce the quantity of sealing ring, ensure the detachability of electric drive pump simultaneously, reduce maintenance cost, can
To extend the service life of pump.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the first embodiment of electric drive pump；
Fig. 2 is the perspective view of the pump housing of the electric drive pump shown in Fig. 1；
The cross-sectional schematic of the pump housing shown in Fig. 3 Fig. 2；
Fig. 4 is the cross-sectional schematic of the bonnet of the electric drive pump shown in Fig. 1；
Fig. 5 is the structural representation of the upper surface of the bonnet shown in Fig. 4；
Fig. 6 is the structural representation of the second embodiment of electric drive pump；
Fig. 7 is the pump housing sectional structure schematic diagram shown in Fig. 6；
Fig. 8 is the bonnet sectional structure schematic diagram shown in Fig. 6.
[detailed description of the invention]
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings:
Fig. 1 to Fig. 5 is the structural representation of the first embodiment of electric drive pump 100, electric drive
Pump 100 include pump cover 1, the pump housing 2, bonnet 3, end cap 4, separation sleeve 5, impeller 6, stator 71,
Rotor 72, pump shaft 8, ECU 9；Pump cover 1 and the pump housing 2 removably connect fixing and lead to
Cross sealing ring and form opposing seal structure at connecting portion, by the spiral shell such as bolt or screw in the present embodiment
Stricture of vagina mode connects；Pump cover 1 and the pump housing 2 fixing after form impeller cavity 10, impeller cavity 10 be provided with into
Mouth and outlet, in the present embodiment, impeller 6 is arranged at impeller cavity 10 inside, and impeller can also be main body position
Inside impeller cavity；The pump housing 2 is threaded by bolt etc. with bonnet 3 and is being connected by sealing ring
Position forms opposing seal structure, and the pump housing 2 is fixing with bonnet 3 forms the first receiving chamber 20, and first holds
Receive chamber 20 for accommodating stator 71 and rotor 72 etc.；First receiving chamber 20 is divided into by separation sleeve 5
The bore of stator 201 that do not connects with impeller cavity thus flow through without working media and working media can be had to flow through
Rotor chamber 202, stator 71 is arranged at bore of stator 201, and rotor 72 is arranged at rotor chamber 202；Pump
Axle 8 is by the pump housing 2 and bonnet 3 is spacing or supports, pump shaft 8 stretch into end impeller cavity 10 within and
Impeller 6 is fixedly installed, and the part that pump shaft 8 is positioned within rotor chamber 202 is fixedly installed with rotor 72,
Rotor 72 can rotate under the effect of the electromagnetic force of electric drive pump and drive pump shaft 8 to rotate, pump shaft 8
Impeller 6 rotates.Forming the second receiving chamber 30 between bonnet 3 and end cap 4, ECU 9 sets
It is placed in the second receiving chamber 30；ECU 9 includes the electric elements on circuit board and circuit board,
ECU 9 is connected with external circuit by lead-in wire, and ECU 9 is connected with stator 71 by lead-in wire.
In the present embodiment, the coupling part between pump cover 1 and the pump housing 2 arranges sealing ring, the pump housing 2 and bonnet
Coupling part between 3 arranges sealing ring, and the coupling part between bonnet 3 and end cap 4 arranges sealing
Circle, and between the free end of separation sleeve 5 and installed surface, it is provided with sealing ring, above-mentioned sealing ring is used for
Ensure the opposing seal of coupling part, naturally it is also possible to have other sealing means, such as weld, welding
Sealing strengthen；But welding manner relatively, the structure of the independent element in split-type structural more has
It is beneficial to detaching products maintenance.
As it is shown in figure 1, form impeller cavity 10 between pump cover 1 and the pump housing 2, electric drive pump 100 works
Time, impeller 6 can do centrifugal motion in impeller cavity 10 so that enters the working media of impeller cavity 10
Operating pressure increase, pump cover 1 is provided with the influent stream pipe 11 and outflow tube connected with impeller cavity 10
(not shown), influent stream pipe 11 and impeller cavity 10 are by inlet communication, outflow tube 12 and impeller
Outlet is passed through in chamber 10；When electric drive pump 100 works, working media enters leaf from influent stream pipe 11
Wheel chamber 10, impeller 6 does centrifugal motion under the drive of pump shaft 8, and working media is in the effect of impeller 6
Downforce is raised and is flowed out by outflow tube in exit.
As it is shown in figure 1, opposing seal forms the first receiving chamber 20, isolation between the pump housing 2 and bonnet 3
First receiving chamber 20 is divided into the rotor chamber 202 that working media can be had to circulate and is situated between without work by set 5
The bore of stator 201 that mass flow is crossed, rotor 72 is rotatablely arranged in rotor chamber 202, stator 71 phase
To being fixedly arranged in bore of stator 201, separation sleeve 5 one end is fixing with the pump housing 2 or bonnet 3 injection,
The free end of separation sleeve 5 is by bonnet 3 or the pump housing 2 is spacing and forms opposing seal structure at connecting portion.
As shown in Figures 2 and 3, in the first embodiment of electric drive pump 100, the pump housing 2 and every
It is integrated from set 5 structure is set, be wholely set to include being welded and fixed and link into an integrated entity or once or two
Secondary injection forms one etc.；Below being wholely set of the present embodiment pump housing 2 and separation sleeve 5 can use
One of which in three kinds of structures, the first structure: separation sleeve 5 selects metal material to make, the pump housing 2
Use plastic material, add man-hour, first process separation sleeve 5, with separation sleeve 5 as inserts, through note
The moulding one-tenth pump housing 2, separation sleeve 5 is fixedly installed by integrated through injection molding with the pump housing 2；The second structure:
Separation sleeve 5 is the identical plastic material that maybe can coordinate with the material of the pump housing 2, the pump housing 2 and separation sleeve
5 use disposable injection molded to be structure as a whole, or use quadric injection mould mode to be configured to one
Body structure.Separation sleeve 5 is fixedly installed by injection with the pump housing 2, the first structure due to use every
It is metal sheets from set, injection difficulty, the second structure, separation sleeve 5 can be reduced when injection
Use with the pump housing 2 the identical material injection that maybe can coordinate to be integrally formed structure, injection can be improved
The sealing of drip molding；In the third structure, separation sleeve 5 and the pump housing 2 all can use metal material,
Both are fixedly connected by welding.
Refer to Fig. 1, Fig. 2 and Fig. 3, the pump housing 2 is in hood-shaped, including top 21 and sidewall 22, top
Portion 21 and sidewall 22 surround the inner chamber of the pump housing 2；Stator 71 and rotor 72 can be arranged at the pump housing 2
Inner chamber；Top 21 is provided with the depressed area 211 of inside cavity direction, and depressed area 211 is from top 21
Outer surface cave in the inner chamber of the pump housing 2 and formed, depressed area 211 includes concave bottom 2111 and recessed
Falling into sidewall 2112, the central part of the concave bottom 2111 running through depressed area 211 is provided with centre bore
211a, pump shaft 8 passes centre bore 211a and stretches into impeller cavity 10 from rotor chamber 202 and connect with impeller 6
Connect；Wherein, the part matching part of impeller 6 and pump shaft 8, in depressed area 211 depressed part, so exists
On the premise of not increasing electric drive pump 100 whole height, it is possible to make impeller 6 and pump shaft 8 coordinates length
Degree increases, and improves the run stability of impeller 6；Recessed side walls 2112 is distributed in ladder, is possible to prevent
Impeller 6 and the pump housing 2 operationally produce interference.
The outside of sidewall 22 is provided with the first standing part 23 and the second standing part 24, and first fixes
Part 23 is connected by bolt or screw with pump cover 1, and the second standing part 24 passes through spiral shell with bonnet 3
Nail or bolt connect；The inner surface of sidewall 22 is provided with one or more than two for auxiliary to stator 71
Help spacing stopping means；Stopping means includes the projection formed from sidewall to the internal protrusion of the pump housing 2
Muscle 25, raised ribs 25 is arranged on the inner side of sidewall 22, the raised ribs 25 when raised ribs 25 is two
Symmetrical along sidewall 22 in the inner side of sidewall 22；When raised ribs 25 is more than three, raised ribs
25 in the inner side of sidewall 22 along the generally uniform distribution of circumference of sidewall 22, the present embodiment protrusions muscle 25
Being 3, adjacent protrusion muscle 25 is substantially in 120 degree of distributions；After stator 71 is installed on bore of stator 201,
The iron core of stator 71 can also be able to be formed in matched in clearance with raised ribs 25 in radial direction or circumferencial direction
Tight fit, can assist the rotation limiting stator 71, make the connection between stator 71 and the pump housing 2 more
Reliable fixing.
The inner surface at the top 21 of the pump housing 2 and separation sleeve 5 integrated injection molding, the inner surface at top 21 sets
Being equipped with the clutch shaft bearing mounting seat 811 of clutch shaft bearing 81 for supporting pump shaft 8, clutch shaft bearing is installed
Seat 811 include the inner surface being arranged at top 21 from the top 21 of the pump housing 2 to pump housing inner chamber convex shaped
First annular protruding 261 become, the outer surface of clutch shaft bearing 81 and the first annular inner side of protruding 261
Face tight fit is arranged, and the medial surface of clutch shaft bearing 81 is arranged with the outer surface tight fit of pump shaft 8.The pump housing
2 with the concrete mode of separation sleeve 5？
Refer to shown in Fig. 1 and Fig. 4, Fig. 5 simultaneously, bonnet 3 include upper and lower surface and
Sidewall, the upper surface of bonnet 3 is provided with the second installation portion 36 for spacing separation sleeve 5 free end
And for accommodating the second bearing mounting base 822 of the second bearing 82, the second bearing 82 is used for supporting
Pump shaft 8；The 3rd annular protrusion 361 that second installation portion 36 includes being arranged at bonnet 3 upper surface and
The second annular groove 363 formed between fourth annular protruding 362 and adjacent annular projection, second
Annular groove 363 includes installing sidewall and installing diapire, installs sidewall and includes the 3rd annular protrusion 361
Medial surface and the lateral surface of fourth annular projection 362, diapire is installed and is installing between sidewall；
The free end of separation sleeve 5 inserts in the second annular groove 363, the free end of separation sleeve 5 and the installation end
It is provided with sealing ring between wall, prevents the working media in rotor chamber 202 by separation sleeve 5 and bonnet
Connecting portion between 3 enters in bore of stator 201.Additionally can also set in the second annular groove 363
Put the stage portion for position limiting sealed circle, the most also can achieve the goal.
At the upper surface of bonnet 3, fourth annular projection 362 is provided with labyrinth type groove 362a, labyrinth
The regional connectivity that the medial surface of formula groove 362a and fourth annular projection 362 surrounds is arranged, fourth annular
Protruding 362 also include stage portion 362b, and the height of stage portion 362b is less than fourth annular projection 362
Height, the medial surface tight fit of the outer surface of the second bearing 82 and fourth annular projection 362 is arranged,
One end face of the second bearing 82 substantially contacts setting, the second bearing with the upper surface of stage portion 362b
The medial surface of 82 is arranged with the lateral surface tight fit of pump shaft 8.In the present embodiment, protruding in fourth annular
In the housing region that 362 medial surface surround, bonnet 3 is provided with a upper and lower surface running through bonnet 3
Central small hole 365.In the present embodiment, the peripheral part of the upper surface of bonnet 3 is additionally provided with edge protuberance
Ring 364, edge protuberance ring 364 is correspondingly arranged with the stopping means 25 on the pump housing, runs through the upper of bonnet
Lower surface, edge protuberance ring 364 is provided through the intercommunicating pore 364a of the upper and lower surface of bonnet.
It is the structural representation of the second embodiment of electric drive pump 100 as shown in Figure 6 to 8,
Compared with the first embodiment, differ primarily in that: bonnet 3 ' and separation sleeve 5 ' are structure as a whole,
Bonnet 3 ' and separation sleeve 5 ' can use the one in following three kinds of structures, the first structure: isolation
Set 5 ' employing metal materials are made, and bonnet 3 ' uses plastic material, first processes separation sleeve, then with
Separation sleeve 5 ' is inserts, forms bonnet 3 ' through injection, and separation sleeve 5 ' and bonnet 3 ' are by injection
Integrally it is fixedly installed；The second structure: separation sleeve 5 ' is identical plastics material with the material of bonnet 3 '
Material or the plastic material matched, bonnet 3 ' and separation sleeve 5 ' use disposable injection molded or employing
The form of quadric injection mould is made.Separation sleeve 5 ' is fixedly installed by injection with bonnet 3 ', the first knot
Structure is metal sheets due to the separation sleeve 5 ' used, and can reduce injection difficulty when injection, the
Two kinds of structures, separation sleeve 5 ' and bonnet 3 ' use the disposable injection molded of identical material, Ke Yiti
The sealing of high injection molded article；The third structure: separation sleeve 5 ' and bonnet 3 ' the most all use metal
Material also passes through to be welded and fixed.
Refer to Fig. 6, Fig. 7 and Fig. 8, the pump housing 2 ' is in hood-shaped, including top 21 and sidewall simultaneously
22, top 21 and sidewall 22 surround the inner chamber of the pump housing 2 '；Stator 71 and rotor 72 are arranged at pump
The inner chamber of body 2；The outside of sidewall 22 is provided with the first standing part 23 and the second standing part 24,
First standing part 23 is connected by bolt or screw with pump cover 1, the second standing part 24 and bonnet
3 are connected by screw or bolt；Top 21 is provided with the depressed area 211 of inside cavity direction, depressed area
211 outer surfaces from top 21 cave in the inner chamber of the pump housing 2 ' and are formed, and depressed area 211 includes recessed
Fall into bottom 2111 and recessed side walls 2112, run through the central part of the concave bottom 2111 of depressed area 211
Being provided with centre bore 211a, pump shaft 8 enters impeller cavity 10 through centre bore 211a from rotor chamber 202
And be connected with impeller 6；Wherein, impeller 6 and the part matching part of pump shaft 8 are in depressed area 211
Depressed part, so on the premise of not increasing electric drive pump 100 whole height, it is possible to make impeller 6 with
The length of fit of pump shaft 8 increases, and improves the run stability of impeller 6；Or under similar circumstances,
Reduce the overall height of electric drive pump；Recessed side walls 2112 is distributed in ladder, is possible to prevent impeller 6
Interference is operationally produced with the pump housing 2 '.
As shown in Figure 6 and Figure 7, the inner surface of the sidewall of the pump housing 2 ' is provided with more than two for right
The stopping means of stator 71 auxiliary stopper, stopping means includes from sidewall to the internal protrusion of the pump housing 2 '
The raised ribs 25 formed, raised ribs 25 is generally uniform along the circumference of sidewall 22 in the inner side of sidewall 22
Distribution, the present embodiment protrusions muscle 25 is 3, and adjacent protrusion muscle 25 is substantially in 120 degree of distributions；
After stator 71 is installed on bore of stator 201, the iron core of stator 71 is radially or circumferencial direction and raised ribs
25 form tight fit or matched in clearance, can assist the rotation limiting stator 71, make stator 71 and pump
Body 2 ' connects more reliable fixing；In the present embodiment, the inner surface at the top 21 of the pump housing 2 ' is provided with
For the first installation portion 26 of spacing separation sleeve 5 ' and for accommodating the first axle of clutch shaft bearing 81
Holding mounting seat 811, clutch shaft bearing 81 is for spacing or support pump shaft 8；First installation portion 26 includes setting
It is placed in first annular protruding 261 and second annular protrusion 262 and adjacent of the inner surface at top 21
The first annular groove 263 formed between annular protrusion, first annular groove 263 includes installing sidewall
With installation diapire, sidewall is installed and includes the first annular medial surface of protruding 261 and the second annular protrusion
The lateral surface of 262, installs diapire and is installing between sidewall；The free end of separation sleeve 5 ' inserts first
In annular groove 263, the free end of separation sleeve 5 ' is arranged with the connecting portion of first annular groove 263
There is sealing ring, prevent the working media in rotor chamber 202 by between separation sleeve 5 ' and the pump housing 2 '
Connecting portion enters in bore of stator 201；Additionally can also be provided for limit in first annular groove 263
The stage portion of position sealing ring, the most also can achieve the goal；Clutch shaft bearing mounting seat 811 includes
The medial surface of second ring projection 262, the outer surface of clutch shaft bearing 81 and the second annular protrusion 262 interior
Side tight fit is arranged, and the inner surface of clutch shaft bearing 81 is arranged with the outer surface secure fit of pump shaft 8.
As shown in Figure 6 and Figure 8, bonnet 3 ' includes upper and lower surface and sidewall, bonnet 3 '
Upper surface and separation sleeve 5 ' fixing through injection, including integrated injection molding with by being embedding with separation sleeve 5 '
The injection of part is fixed；Bonnet 3 ' is provided with the second bearing mounting base 822 for accommodating the second bearing 82,
Second bearing 82 is for spacing or support pump shaft 8；The 3rd annular protrusion 361 it is provided with on bonnet 3 ',
Second bearing mounting base 822 includes the medial surface of the 3rd annular protrusion 361, the appearance of the second bearing 82
Face is arranged with the medial surface tight fit of the 3rd annular protrusion 361, the inner surface of the second bearing 82 and pump shaft
The outer surface tight fit of 8 is arranged；The center that bonnet 3 is provided with a upper and lower surface running through bonnet 3 is little
Hole 365.
As shown in figures 1 to 6, in order to cool down ECU 9 further, electric drive pump 100 is arranged
Having the cooling duct 90 for working media circulation, producing heat when ECU 9 works can be cooled
In passage 90, the working media of flowing is taken away；Cooling duct 90 includes that the higher-pressure region with impeller cavity 10 is even
Logical first paragraph passage 91, the second segment passage 92, Yi Jineng connected with impeller cavity 10 relatively low-pressure area
Reach and the 3rd section of passage 93 of ECU 9 heat exchange；In electric drive pump 100 work process, due to
The pressure of cooling duct import more than the pressure of cooling duct outlet, due to cooling duct 90 entrance point and
The existence of the pressure reduction of the port of export makes working media can flow in cooling duct 90；Wherein in diagram
Single direction of arrow illustrate when electric drive pump 100 works, working media in cooling duct 90 may
The type of flow.
First paragraph passage 91 include running through the sidewall of the pump housing 2 the pump housing passage that formed of top and bottom
251, pump housing passage 251 at least more than one；Specifically, pump housing passage 251 is disposed through part
Or all reinforcements 25, the circulation path of the working media that pump housing passage 251 is formed is the most smooth
Linear type, to reduce the flow resistance of working media, it is simple to the flowing of working media；At least a part of which
One pump housing passage 251 is arranged at or part is disposed in proximity to of setting of outlet of impeller cavity 10
On reinforcement 25, such passage 251 can connect the obvious higher-pressure region of impeller cavity 10；The present embodiment
Middle pump body passage 251 includes three, and corresponding three reinforcements 25 are arranged respectively；Certainly reinforcement 25
Number can be able to be 6 more than pump housing passage 251 number, such as reinforcement 25, pump housing passage
The number of 251 is 3.
As it is shown in figure 1, second segment passage 92 includes the axial passage 801 being arranged on pump shaft 8, axle
Along the length direction of pump shaft 8 and 8 liang of ends formation of pump shaft, axial passage 801 is run through to passage 801
Connect with the low-pressure area of impeller cavity 10；The circulation path of the working media that axial passage 801 is formed is substantially
For smooth linear type, to reduce the flow resistance of working media, it is simple to the flowing of working media；Cold
But passage 90 can also include that second segment subaisle 921, second segment subaisle 921 include being arranged at pump
The opening 211c of the depressed area 211 of body 2, opening 211c connection impeller cavity 10 and rotor chamber 202,
The relatively close pump shaft of opening 211c 8 is arranged, the central axis of opening 211c and described pump shaft it
Between have certain distance, such opening 211c connects the pressure at position and can be slightly larger than with impeller cavity 10
The pressure of the exit site that pump shaft connects with impeller cavity 10；The circulation path of second segment subaisle 921 is
Relatively tortuous, add the flow resistance of working media, can make working media preferably and stator 71
Carry out heat exchange.In double-head arrow direction as shown in Figure 1 illustrates the second subaisle 921, work is situated between
A kind of flow direction of matter, i.e. flows to impeller cavity from the 3rd section of passage 93 by the second subaisle 921
10, at this moment, the actual internal area of first paragraph passage 91 is relatively big, and working media is by first paragraph passage
During 91 flowing, the resistances that are subject to are less so that enter the pressure of working media in the 3rd section of passage 93
The pressure at position is connected with impeller cavity 10 so that working media is secondary second more than opening 211c
Can flow according to direction shown in double-head arrow in passage 921；If working media is at first paragraph passage 91
By bigger flow resistance so that working media declines relatively big at the pressure of first paragraph passage 91, enters
And the pressure of the working media in the 3rd section of passage 93 connects with impeller cavity 10 less than opening 211c
During the pressure at position, the working media in the second subaisle 921 from impeller cavity 10 to the 3rd section of passage
93 flowings, the working media in the 3rd section of passage 93 flows into impeller cavity 10 by second segment passage 92.
As shown in figures 1 to 6, between bonnet 3 and dividing plate 50, opposing seal forms the 3rd section of passage
93, the 3rd section of passage 93 is connected by connectivity structure with first paragraph passage 91 and second segment passage 92
Arrange；The lower surface of bonnet 3 and the upper surface of dividing plate 50 contact setting, dividing plate with working media
The lower surface of 50 contacts setting with ECU 9, and dividing plate 50 is metal material, by ECU 9
The working media that the heat produced during work flows in being delivered to the 3rd section of passage 93 by dividing plate 50 is also
Taken away by the working media of flowing；For ensureing that the 3rd section of passage 93 forms the space of opposing seal, electricity
Beyond the go between sidewall by bonnet 3 or other the 3rd section of passage 93 arranged between road plate and stator
Place connect with the coil of stator 71.
It is convenient that the direction such as upper and lower in above example is intended merely to describe, and upper and lower is to not necessarily
Being the direction after electric drive pump 100 is installed, the use direction to electric drive pump does not produces and limits.
It should be understood that above example be merely to illustrate the present invention and and the unrestricted present invention retouched
The technical scheme stated, although this specification is detailed to present invention has been with reference to the above embodiments
Illustrate, but, it will be understood by those within the art that, person of ordinary skill in the field
Still the present invention can be modified or equivalent, and all without departing from the present invention spirit and
The technical scheme of scope and improvement thereof, all should contain in scope of the presently claimed invention.
Claims (10)
1. an electric drive pump, including pump cover, the pump housing, impeller, bonnet, pump shaft, motor part with
And ECU, described pump cover and the described pump housing fix formation for the impeller cavity accommodating described impeller；Institute
State the pump housing and described bonnet is fixed and formed the first receiving chamber accommodating described motor part；Described motor part
Including stator and rotor, described rotor drives described wheel rotation by pump shaft；It is characterized in that: described
Electric drive pump also includes a separation sleeve, and described separation sleeve accommodates described first chamber and is divided into bore of stator and turns
Sub-chamber, the most described bore of stator of described rotor chamber is near described pump shaft, described bore of stator and described impeller cavity
Not connecting, described rotor chamber directly or indirectly connects with described impeller cavity, and described stator is arranged at described
In bore of stator, described rotor is arranged in described rotor chamber；Described ECU distributes with described motor section
Closing work, described ECU controls the operation of described motor part；One end of described separation sleeve is with described
The pump housing or described bonnet are wholely set, and the free end of described separation sleeve is not by with described separation sleeve integrally
The pump housing or the bonnet that arrange are spacing and form opposing seal chamber, prevent the working media in described rotor chamber to be situated between
Enter described bore of stator.
Electric drive pump the most according to claim 1, it is characterised in that: described separation sleeve is metal
Material, based on described separation sleeve, part forms the joined integrally of the described pump housing and separation sleeve through injection
Part, the described pump housing includes that top and sidewall, described separation sleeve are fixedly installed with described top, described top
Medial surface be formed with the clutch shaft bearing mounting seat of clutch shaft bearing of pump shaft described in limited support；Clutch shaft bearing
Mounting seat includes first annular projection, outside the medial surface of described first annular projection is with described clutch shaft bearing
Side face tight fit is arranged.
Electric drive pump the most according to claim 2, it is characterised in that: the freedom of described separation sleeve
End is fixed on the installation portion that described bonnet is arranged, and described bonnet includes upper and lower surface, described bonnet
Upper surface the oriented described first the second annular protrusion and the 3rd convex annular accommodating chamber internal protrusion is set
Rising, described installation portion includes the groove formed between adjacent annular projection, and the free end of described separation sleeve is inserted
Enter described second annular protrusion outer peripheral face and described 3rd annular protrusion inner peripheral surface is formed in groove, and pass through
Extruding O-ring seal forms opposing seal.
Electric drive pump the most according to claim 3, it is characterised in that: described electric drive pump includes
For spacing or support clutch shaft bearing and second bearing of described pump shaft, the upper surface of described bonnet is provided with
For accommodating the second bearing mounting base of described second bearing, described second bearing mounting base includes described
The outer surface close-fitting of second ring projection inner peripheral surface, described second annular protrusion inner peripheral surface and described second bearing
Close and arrange.
Electric drive pump the most according to claim 1, it is characterised in that: described electric drive pump includes
For spacing or support clutch shaft bearing and second bearing of described pump shaft；Described separation sleeve is metal material,
Based on described separation sleeve, part forms the part joined integrally of described bonnet and described separation sleeve through injection,
Described separation sleeve is arranged at the upper surface of described bonnet, and described bonnet is formed with clutch shaft bearing mounting seat, institute
State clutch shaft bearing mounting seat for accommodating described clutch shaft bearing；Described clutch shaft bearing mounting seat includes forming in
The first annular projection of the upper surface of described bonnet, the outer surface of described clutch shaft bearing is first annular with described
Protruding inner peripheral surface tight fit is arranged.
Electric drive pump the most according to claim 5, it is characterised in that: the freedom of described separation sleeve
End is fixed on the installation portion that the described pump housing is arranged, and the described pump housing includes that top and sidewall, described installation portion set
Being placed in described top, described top arranges oriented described first and accommodates the second annular protrusion that intracavity portion protrudes
With the 3rd annular protrusion, described mounting part includes the groove formed between adjacent annular projection, described
The free end of separation sleeve inserts described second annular protrusion outer peripheral face and described 3rd annular protrusion inner peripheral surface
In formation groove, and form sealing by extruding O-ring seal.
Electric drive pump the most according to claim 6, it is characterised in that: the inner surface at described top
Being provided with the second bearing mounting base of the second bearing for accommodating, described second bearing mounting base includes institute
State the outer surface of the second annular protrusion inner peripheral surface, described second annular protrusion inner peripheral surface and described second bearing
Tight fit is arranged.
Electric drive pump the most according to claim 1, it is characterised in that: described separation sleeve is plastics
Material, described bonnet is plastic material, and described separation sleeve and described bonnet are through once injection or quadric injection mould
Forming integrative-structure, the free end of described separation sleeve inserts in the groove that the described pump housing is arranged, by described
The fixed part that the pump housing is arranged is fixed.
Electric drive pump the most according to claim 8, it is characterised in that: the described pump housing is arranged to institute
Stating first annular projection and the second annular protrusion that the first receiving chamber is protruded, described fixed part includes described the
Groove between one annular protrusion and described second annular protrusion, the free end of described separation sleeve inserts described
In groove, it is provided with between bottom and the free end of described separation sleeve of described groove and arranges at connecting portion
O-ring seal connecting portion between the free end and described bottom portion of groove of described separation sleeve is formed and seals.
Electric drive pump the most according to claim 8, it is characterised in that: described bonnet arranges first
Bearing mounting base, the described pump housing is provided with the second bearing mounting base, and described clutch shaft bearing is installed on described
One bearing mounting base, described second bearing is installed on described second bearing mounting base, outside described clutch shaft bearing
Side face and described clutch shaft bearing mounting seat tight fit, described second bearing outer peripheral face and described second bearing peace
Dress seat tight fit, described pump shaft is equal with the medial surface of described clutch shaft bearing medial surface and described second bearing
Form tight fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136752.5A CN106151055B (en) | 2015-03-26 | 2015-03-26 | Electric drive pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136752.5A CN106151055B (en) | 2015-03-26 | 2015-03-26 | Electric drive pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106151055A true CN106151055A (en) | 2016-11-23 |
| CN106151055B CN106151055B (en) | 2019-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510136752.5A Active CN106151055B (en) | 2015-03-26 | 2015-03-26 | Electric drive pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106151055B (en) |
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| CN107228074A (en) * | 2017-07-31 | 2017-10-03 | 广东威灵电机制造有限公司 | Electronic water pump |
| CN107246396A (en) * | 2017-07-31 | 2017-10-13 | 广东威灵电机制造有限公司 | Electronic water pump |
| CN107370290A (en) * | 2017-08-15 | 2017-11-21 | 华域汽车电动系统有限公司 | A kind of electric machine structure in injection molding type electronic water pump |
| CN109424555A (en) * | 2017-08-28 | 2019-03-05 | 马勒国际有限公司 | Fluid pump and method for assembling fluid pump |
| CN110067755A (en) * | 2018-01-24 | 2019-07-30 | 无锡盛邦电子有限公司 | A kind of novel electronic water pump |
| CN110529226A (en) * | 2019-08-27 | 2019-12-03 | 汉宇集团股份有限公司 | A kind of electronic water pump for automobile of internal liquid cooling |
| WO2023284743A1 (en) * | 2021-07-13 | 2023-01-19 | 浙江盾安人工环境股份有限公司 | Electronic water pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023284743A1 (en) * | 2021-07-13 | 2023-01-19 | 浙江盾安人工环境股份有限公司 | Electronic water pump |
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| Publication number | Publication date |
|---|---|
| CN106151055B (en) | 2019-06-07 |
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Effective date of registration: 20170405 Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 21 Avenue, No. 60 Applicant after: Zhejiang Sanhua Automobile Components Co., Ltd. Address before: 310018 289-2, Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Applicant before: Hangzhou Sanhua Institute Co., Ltd. |
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