CN207762004U - Electrodynamic pump - Google Patents

Abstract

A kind of electrodynamic pump, including rotor assembly and pump shaft, rotor assembly is rotated around pump shaft, rotor assembly includes impeller, rotor and bearing, bearing includes first bearing, first bearing is arranged close to impeller, the first end of pump shaft is formed with planar portions and stage portion, first bearing includes inner peripheral surface, inner peripheral surface is arranged around the periphery of pump shaft, and first bearing is provided with relief portion, and relief portion enables to the inner peripheral surface of first bearing not contacted with stage portion, abrasion of the stage portion to first bearing is advantageously reduced in this way, is conducive to improve service life.

Description

Electrodynamic pump

【Technical field】

The utility model is related to a kind of fluid pumps, and in particular to a kind of electrodynamic pump.

【Background technology】

Automobile industry is grown rapidly, more reliable as automotive performance is towards safer, more stable, full-automatic intelligent and Environmental protection and energy saving direction is developed.Electrodynamic pump is largely applied in vehicular hot pipe reason system, and is well positioned to meet the requirement in market.

Electrodynamic pump includes pump shaft, rotor assembly, stator module and circuit board, and rotor assembly is turned by bearing around pump shaft It is dynamic, in this way when bearing and improper pump shaft fit structure, the abrasion of bearing can be led to, and then reduce the service life.

Therefore, it is necessary to be improved to existing technology, to solve the above technical problem.

【Utility model content】

The purpose of this utility model is to provide a kind of electrodynamic pumps, advantageously reduce abrasion, improve service life, and reduction is made an uproar Sound.

To achieve the above object, the utility model adopts the following technical solution：A kind of electrodynamic pump, including pump shaft, pump cover, every From set, rotor assembly and stator module, the rotor assembly and the stator module, the pump shaft packet is isolated in the separation sleeve First end and the second end are included, the first end is supported in the first support base being connect with the pump cover, the second end Portion is supported in the second support base being connect with the separation sleeve, and the rotor assembly can surround the pump shaft and rotate, described turn Sub-component includes impeller portion, rotor portions and bearing assembly, and the bearing assembly includes first bearing and second bearing, and described The relatively close impeller portion setting of one bearing, the relatively close rotor portions setting of second bearing, it is characterised in that：Institute The first end for stating pump shaft is formed with planar portions and stage portion, and the planar portions are from the pump the tip of the axis to the pump shaft ontology Extend, the part first end stretches into first support base, and the first bearing includes first end face, second end face, interior Circumferential surface and peripheral surface, the first bearing are sheathed on the periphery of the pump shaft, the first end face ratio by the inner peripheral surface The second end face is arranged close to the pump cover, and the first bearing further includes relief portion, and the relief portion enables to described First bearing is not contacted with the step surface of the stage portion.

Compared with prior art, the first bearing of the utility model is provided with relief portion, and relief portion can make first axle Hold the stage portion for avoiding pump shaft, reduce abrasion of the stage portion to the inner circumferential of first bearing, improve service life, avoid pump shaft and The interference of rotor assembly, while noise can also be reduced.

The relief portion includes bottom, and the upper end of the bottom is connect with the first end face, the lower end of the bottom with The inner peripheral surface connection, along the axial direction of the first bearing, from the first end face of the first bearing to the first bearing The distance at middle part, the bottom to the peripheral surface gradually increases, and the distance of the bottom to the second end face is less than described First end face to the second end face distance.

The relief portion includes side wall and bottom, and the side wall is arranged than the bottom close to the first end face, described Side wall is arranged in parallel with the inner peripheral surface, and the bottom intersects setting with the side wall and the inner peripheral surface, and the bottom is opposite It is arranged closer to the inner peripheral surface in the side wall, the distance of the side wall to the peripheral surface of the first bearing is less than in described Circumferential surface is to the distance of the peripheral surface of the first bearing, and the distance of the bottom to the second end face is less than the first end face To the distance of the second end face.

The first gasket is provided between the rotor assembly and first support base, first gasket is sheathed on described First end periphery limits first gasket by the stage portion and is moved to the rotor portions direction, and described first Gasket includes intercommunicating pore, and the shape of the intercommunicating pore is identical as the shape in the section of the first end of the pump shaft, and described first The periphery of gasket and the first end passes through the intercommunicating pore clearance fit.

The electrodynamic pump includes the first position of the rotor assembly, the first position refer to first support base and The first bearing is contacted with first gasket, and the bottom is located at the step surface of the stage portion or less or the bottom Portion is concordant with the step surface of the stage portion to be arranged.

The electrodynamic pump includes the first position of the rotor assembly, the first position refer to first support base and The first bearing is contacted with first gasket, and the bottom is located at the step surface of the stage portion or less or the bottom Portion is concordant with the step surface of the stage portion to be arranged；The electrodynamic pump further includes the second position of the rotor assembly, and described Two positions refer to that first support base is detached with the first gasket with the first bearing, and first pad support is in described The step surface of stage portion, the bottom are located at the step surface of the stage portion hereinafter, the first end face of the first bearing is located at Below the step surface of the stage portion.

The first bearing is being both provided with the relief portion at the first end face and the second end face, described The structure of second bearing is identical as the structure of the first bearing.

The bearing assembly includes axle sleeve, and the axle sleeve is made of metal material, and the axle sleeve is provided with axis hole, the pump Axis is arranged across the axis hole, and the first bearing and the second bearing are set in the axis hole, the first bearing First end face is higher by the end face setting of the axle sleeve, and the bottom is concordant with the end face of the axle sleeve to be arranged.

The impeller portion includes bushing, and the bushing is metalwork, the peripheral surface of the bushing inner peripheral surface and the axle sleeve The peripheral surface injection molding of tight fit, the impeller and the bushing is fixed.

The electrodynamic pump includes the second gasket, and second gasket is set to the second bearing of the rotor assembly and described Separation sleeve for fixing between the second support portion of the pump shaft, the rotor assembly can be in first gasket and described It is moved along the pump shaft between second gasket.

【Description of the drawings】

Fig. 1 is a kind of dimensional structure diagram of embodiment of the utility model electrodynamic pump；

Fig. 2 is an in running order cross section structure schematic diagram of electrodynamic pump shown in Fig. 1；

Fig. 3 is the cross section structure schematic diagram that electrodynamic pump shown in Fig. 1 remains static；

Fig. 4 is an embodiment structure schematic diagram of the pump shaft of electrodynamic pump shown in Fig. 2；

Fig. 5 is an embodiment structure schematic diagram of the rotor assembly of electrodynamic pump shown in Fig. 2；

Fig. 6 is a structural schematic diagram of first bearing in Fig. 2；

Fig. 7 is the close-up schematic view in the portions A in Fig. 2；

Fig. 8 is the close-up schematic view in the portions B in Fig. 3.

【Specific implementation mode】

The utility model is described in further detail in the following with reference to the drawings and specific embodiments：

Referring to Fig. 1, the working media that electrodynamic pump 100 manages system for automotive thermal tube provides mobilization dynamic, and working media is packet Include 50% glycol water or clear water.

In conjunction with referring to Fig. 1 and Fig. 2, electrodynamic pump 100 include pump cover 10, shell 20, end cap 30, pump shaft 40, connector assembly 50, Rotor assembly 60, stator module 70 and circuit board 80, pump cover 10 by screw or are bolted with shell 20 and end cap 30 And pump inner cavity is formed, electrodynamic pump 100 further includes separation sleeve 90, and separation sleeve 90 is divided into wet chamber 101 and dry chamber 102 by inner cavity is pumped, There can be working media to flow through in wet chamber 101, without working media in dry chamber 102, wherein rotor assembly 60 is set to wet chamber 101, Stator module 70 and circuit board 80 are set to dry chamber 102；Circuit board 80 passes through stator by the program or circuit control of setting The electric current of component 70, rotor assembly 60 include permanent magnet, effect of the permanent magnet in the excitation field generated by stator module 70 It is lower to move, and then rotor assembly 60 is driven to be rotated around pump shaft 40；Circuit board 80 is connected to external electricity by connector assembly 50 Source and/or control signal.

Referring to Fig. 4, pump shaft 40 includes first end 401 and the second end 402, and first end 401 is supported in and pump cover 10 The first integrally formed support base 111, the second end 402 are supported in second support base 112 integrally formed with separation sleeve 90, turn Sub-component 60 is sheathed on 40 periphery of pump shaft and is supported between first end 401 and the second end 402,111 He of the first support base It is provided with the first gasket 61 between rotor assembly 60, the second gasket is provided between the second support base 112 and rotor assembly 60 62, the first gasket 61 and the second gasket 62 are metalwork, advantageous to reduce the first support base and the second support base and rotor assembly Abrasion, improve the service life of product.

First end 401 is formed with planar portions 405 and stage portion 406, first end 401 of the planar portions 405 from pump shaft 40 First end 407 extend to 40 ontology of pump shaft, at least partly planar portions 405 of portion first end 401 stretch into the first support base 111 settings, the first support base 111 are formed with endoporus, and the section shape of endoporus and first end 401 is matched, the planar portions being arranged in this way 405 are conducive to limit rotation of the pump shaft 40 relative to the first support base 111；Stage portion 406 forms in the end of planar portions 405, Stage portion 406 includes step surface, and 111 a certain distance of the first support base of step surface distance in this way can be in stage portion 406 and the First gasket 61 is set between one support base 111, and the lower surface of the first gasket 61 is limited by stage portion 406, the first gasket 61 The first support base of upper surface distance 111 lower surface certain distance, such rotor assembly 60 start when, due to pressure difference Effect, rotor assembly 60 can push the first gasket 61 that can move certain distance to 10 direction of pump cover, be conducive to play buffering Effect improves life of product, reduces noise.The first gasket 61 includes intercommunicating pore 611 simultaneously, and the first gasket 61 passes through intercommunicating pore 611 are sheathed on first end 401, the shape similar set up of the shape of intercommunicating pore 611 and the section of first end 401, and such One gasket 61 will not be rotated relative to first end 401, reduced abrasion of first gasket 61 to the first support base 111, be conducive to Improve the service life of the first support base.

Referring to Fig. 5, rotor assembly 60 includes rotor portions 1, impeller portion 2 and sleeve assembly 3, sleeve assembly 3 include axle sleeve 31, First bearing 32, second bearing 33, axle sleeve 31 are metal material, and rotor portions 1 and impeller portion 2, which are fixed with the periphery of axle sleeve 31, to be connected It connects, first bearing 32 and second bearing 33 are fixedly connected with the inner circumferential of axle sleeve 31.

Impeller portion 2 includes upper cover plate 21, lower cover 22 and bushing 23, and bushing 23 is metal material, is embedding with bushing 23 Part is by the lower cover component that injection molding formation includes lower cover 22, upper cover plate 21 and the lower cover including bushing 23 and lower cover 22 Board group part is fixed by ultrasonic bonding, and the bushing 23 in impeller portion 1 is sheathed on the periphery of axle sleeve 31 and is fixedly connected, golden in this way Belong to part to connect with metalwork so that connection is relatively reliable.

Referring to Fig. 2, Fig. 3 and Fig. 5, sleeve assembly 3 includes axle sleeve 31, first bearing 32 and second bearing 33, impeller Portion 1 and rotor portions 2 are connected as an integral rotor component 60 by axle sleeve 31 and are arranged by first bearing 32 and second bearing 33 In 40 periphery of pump shaft and the rotation of pump shaft 40 can be surrounded.The inner peripheral surface at 31 both ends of axle sleeve has interior stage portion, 32 He of first bearing Second bearing 33 is limited in interior stage portion.

Referring to Fig. 5 and Fig. 6, first bearing 32 includes inner peripheral surface 321, peripheral surface 322, first end face 323 and second end face 324, the inner peripheral surface 321 of first bearing 32 is sheathed on the periphery of pump shaft 40, and the peripheral surface 322 of first bearing 32 is contacted with axle sleeve 31 Setting, first bearing 32 further includes relief portion 325, and when rotor assembly 60 axially moves along pump shaft 40, relief portion 325 is used In the stage portion 406 of evacuation pump shaft 40, scraping of the stage portion 406 to the inner peripheral surface 321 of first bearing 32 is prevented, reduces abrasion, The service life of first bearing is improved, while advantageously reducing the noise between pump shaft and rotor assembly.

Relief portion 325 includes side wall 326 and bottom 327, and side wall 326 is connect with the first end face 323 of first bearing 32, bottom Portion 327 connects side wall 326 and inner peripheral surface 321, and the distance of the peripheral surface 322 of side wall 326 to first bearing 32 is less than inner peripheral surface 321 To the distance of the peripheral surface 322 of first bearing 32, thickness of the such first bearing 32 at the side wall 326 of relief portion 325 is less than Thickness of the first bearing 32 at inner peripheral surface 321 so that first bearing 32 increases in the aperture of relief portion 325.

In the present embodiment, first bearing 32 includes two relief portion 325, is respectively arranged at the inner peripheral surface of first bearing 32 321 both ends, in this way, first bearing 32 is symmetrical structure, it is easy to process, material is saved, while when assemble rotor component 60, no It is simple for assembly process with the direction for distinguishing first bearing 32.

In the present embodiment, the structure of second bearing 33 is identical as the structure of first bearing 32, first bearing 32 and the second axis Same mold can be used by holding 33, can save cost.

Certainly, it may be inclined-plane that bottom 327, which can be plane, and the forming technology that inclined-plane is conducive to first bearing simplifies.

Certainly, relief portion 325 can also only include bottom 327, and the upper end of bottom 327 is connect with first end face 323, bottom 327 lower end is connect with inner peripheral surface 321, along the axial direction of first bearing 32, from the first end face 323 of first bearing 32 to first axle 32 first end face and the middle part of second end face are held, the distance of bottom 327 to peripheral surface 322 gradually increases, bottom 327 to the second The distance of end face 324 is less than first end face 323 to the distance of second end face 324.

Referring to Fig. 7, when rotor assembly 60 works, due to the effect of pressure difference, rotor assembly 60 is along pump shaft 40 to pump cover 10 directions move, and the distance of movement is limited by the first support base 111 and the first gasket 61, wherein the evacuation of first bearing 31 The bottom 327 in portion 325 is located at the step surface of stage portion 406 hereinafter, the bottom 327 of relief portion 325 can also be with stage portion certainly 406 step surface alignment setting, the relief portion 325 being arranged in this way avoid inner peripheral surface 321 of the stage portion 406 to first bearing 32 Scraping, be conducive to the service life for improving first bearing 32, while reducing pump shaft and the interference noise of first bearing.

Referring to Fig. 8, when rotor assembly 60 is static, due to the effect of gravity, rotor assembly 60 is contacted with the second gasket 62, The second end 402 of pump shaft is fixed with the injection molding of separation sleeve 90, and separation sleeve 90 is formed with the second support base 112, the second end 402 It is isolated 112 coating and injection moulding of the second support base that set 90 is formed to fix, the second gasket 62 is contacted with the second limit base 112, in turn Second limit base 112 limits the resting position of rotor assembly 60；When rotor assembly 60 is static, the first end face of first bearing 32 323 are located at the step surface of stage portion 406 or less.

The second end 402 of pump shaft 40 can also be supported in separation sleeve 90 by other means, including detachably support, only It wants that rotation of the pump shaft relative to separation sleeve can be limited.

It should be noted that：Above example is merely to illustrate the utility model and not limits described by the utility model Technical solution, although this specification has been carried out detailed description with reference to the above embodiments to the utility model, this Field it is to be appreciated by one skilled in the art that person of ordinary skill in the field still can modify to the utility model Or equivalent replacement, and the technical solution of all spirit and scope for not departing from the utility model and its improvement, it should all cover In the right of the utility model.

Claims (10)

1. a kind of electrodynamic pump, including pump shaft, pump cover, separation sleeve, rotor assembly and stator module, described in the separation sleeve isolation Rotor assembly and the stator module, the pump shaft include first end and the second end, and the first end is supported in and institute The first support base of pump cover connection is stated, the second end is supported in the second support base being connect with the separation sleeve, described turn Sub-component can surround the pump shaft and rotate, and the rotor assembly includes impeller portion, rotor portions and bearing assembly, the bearing Component includes first bearing and second bearing, the relatively close impeller portion setting of first bearing, the second bearing phase To being arranged close to the rotor portions, it is characterised in that：The first end of the pump shaft is formed with planar portions and stage portion, described flat Face extends from the pump the tip of the axis to the pump shaft ontology, and the part first end stretches into first support base, institute It includes first end face, second end face, inner peripheral surface and peripheral surface to state first bearing, and the first bearing passes through the inner circumferential surface cover Set on the periphery of the pump shaft, the first end face is arranged than the second end face close to the pump cover, and the first bearing is also Including relief portion, the relief portion enables to the first bearing not contacted with the step surface of the stage portion.

2. electrodynamic pump according to claim 1, it is characterised in that：The relief portion includes bottom, the upper end of the bottom with First end face connection, the lower end of the bottom are connect with the inner peripheral surface, along the axial direction of the first bearing, from described the To the middle part of the first bearing, the distance of the bottom to the peripheral surface gradually increases the first end face of one bearing, described The distance of bottom to the second end face is less than the first end face to the distance of the second end face.

3. electrodynamic pump according to claim 1, it is characterised in that：The relief portion includes side wall and bottom, the side wall ratio The bottom is arranged close to the first end face, and the side wall is arranged in parallel with the inner peripheral surface, the bottom and the side wall Intersect with the inner peripheral surface and be arranged, the bottom is arranged relative to the side wall closer to the inner peripheral surface, the side wall to institute The distance for stating the peripheral surface of first bearing is less than the inner peripheral surface to the distance of the peripheral surface of the first bearing, and the bottom is extremely The distance of the second end face is less than the first end face to the distance of the second end face.

4. electrodynamic pump according to claim 3, it is characterised in that：It is arranged between the rotor assembly and first support base There are the first gasket, first gasket to be sheathed on the first end periphery, first gasket is limited by the stage portion It is moved to the rotor portions direction, first gasket includes intercommunicating pore, the shape of the intercommunicating pore and the pump shaft The shape in the section of first end is identical, and first gasket is matched with the periphery of the first end by the interporal lacuna that is connected to It closes.

5. electrodynamic pump according to claim 4, it is characterised in that：The electrodynamic pump includes first of the rotor assembly It sets, the first position refers to that first support base and the first bearing are contacted with first gasket, the bottom Below the step surface of the stage portion or the bottom is concordant with the step surface of the stage portion is arranged.

6. electrodynamic pump according to claim 4, it is characterised in that：The electrodynamic pump includes first of the rotor assembly It sets, the first position refers to that first support base and the first bearing are contacted with first gasket, the bottom Below the step surface of the stage portion or the bottom is concordant with the step surface of the stage portion is arranged；The electrodynamic pump Further include the second position of the rotor assembly, the second position refer to first support base with the first bearing with First gasket detaches, and first pad support is located at the platform of the stage portion in the step surface of the stage portion, the bottom Terrace is hereinafter, the first end face of the first bearing is located at the step surface of the stage portion or less.

7. according to the electrodynamic pump of claim 5 or 6, it is characterised in that：The first bearing close to the first end face and The relief portion is both provided at the second end face, the structure of the second bearing is identical as the structure of the first bearing.

8. electrodynamic pump according to claim 7, it is characterised in that：The bearing assembly includes axle sleeve, and the axle sleeve is by metal Material is made, and the axle sleeve is provided with axis hole, and the pump shaft is arranged across the axis hole, the first bearing and second axis It holds and is set in the axis hole, the first end face of the first bearing is higher by the end face setting of the axle sleeve, the bottom and institute The end face for stating axle sleeve is concordantly arranged.

9. electrodynamic pump according to claim 8, it is characterised in that：The impeller portion includes bushing, and the bushing is metalwork, The peripheral surface injection molding of the peripheral surface tight fit of the bushing inner peripheral surface and the axle sleeve, the impeller and the bushing is fixed.

10. according to claim 4 or 5 or 6 electrodynamic pumps, it is characterised in that：The electrodynamic pump includes the second gasket, and described the Two gaskets are set to the second bearing of the rotor assembly and the second support portion for fixing the pump shaft of the separation sleeve Between, the rotor assembly can move between first gasket and second gasket along the pump shaft.