CN105370584A - Electric pump - Google Patents
Electric pump Download PDFInfo
- Publication number
- CN105370584A CN105370584A CN201510496424.6A CN201510496424A CN105370584A CN 105370584 A CN105370584 A CN 105370584A CN 201510496424 A CN201510496424 A CN 201510496424A CN 105370584 A CN105370584 A CN 105370584A
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- Prior art keywords
- stator
- motor
- yoke
- accepting groove
- stator tooth
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an electric pump. The electric pump comprises a pump body, an impeller contained in the pump body and a motor for driving the impeller to rotate; the motor comprises a stator and a rotor, the rotor comprises a rotor yoke and a permanent magnet which are fixed to the impeller, and the stator comprises a stator yoke, a plurality of stator teeth arranged in the circumferential direction at intervals and a coil wound on the stator teeth; the stator yoke is provided with a containing groove corresponding to each stator tooth, clamping claws are arranged on the two sides of the tail end of the containing groove, and after each stator yoke is inserted into the corresponding containing groove of the stator yoke, the clamping claws on the two sides of the tail end of the containing groove deform towards the stator teeth so as to fix the stator teeth into the containing groove. The electric pump is short in axial size, simple in structure, convenient to assemble and low in machining cost.
Description
[technical field]
The present invention relates to a kind of motor-drive pump, particularly relate to a kind of motor-drive pump adopting disc type electric machine.
[background technique]
Traditional use in dishwasher motor-drive pump adopts direct current generator or the induction machine of radial clearance usually.But this type of motor axial dimension is long, efficiency is low, complex structure.
The present invention aims to provide the motor-drive pump that a kind of axial dimension is short, structure is simple, easy for installation.
[summary of the invention]
For this reason, motor-drive pump provided by the invention, comprise the pump housing, be contained in the impeller in the pump housing, drive the motor of described vane rotary, described motor comprises stators and rotators, described rotor comprises the rotor yoke and permanent magnet that are fixed to impeller, described stator comprises stator yoke, some circumferentially spaced stator tooths and the coil be wound on stator tooth, described stator yoke each stator tooth corresponding establishes accepting groove, claw is established in accepting groove end both sides, after each stator tooth inserts the corresponding accepting groove of stator yoke, the claw of accepting groove end both sides is out of shape towards stator tooth thus is fixed in accepting groove by stator tooth.
Preferably, described stator tooth is made up of soft-magnetic composite material, and described stator yoke is formed to stacking along motor shaft by silicon steel sheet.
Preferably, described stator also comprises the stator case be tightly connected with the pump housing, and described stator case comprises the supporting portion being positioned at central position and the cylinder portion being positioned at outside, and stator tooth and stator yoke are contained in the space between supporting portion and cylinder portion.
Preferably, described stator also comprises axis, and one end of described axis is fixed to the supporting portion of stator case, and the other end is connected to impeller by clutch shaft bearing.
Preferably, the corresponding clutch shaft bearing position indent of nearly rotor-end of the supporting portion of described stator case thus form host cavity, the second bearing is fixed in described host cavity, and the antifriction Performance Ratio clutch shaft bearing of described second bearing is good.
Preferably, the end face of the nearly stator terminal of described clutch shaft bearing establishes some grooves.
Implement the present invention, there is following beneficial effect: motor-drive pump axial dimension of the present invention is short, structure is simple, easy to assembly, processing cost is low.
Below in conjunction with drawings and Examples, the invention will be further described.
[accompanying drawing explanation]
Fig. 1 is the exploded perspective view of the motor-drive pump that one embodiment of the invention provides.
Fig. 2 be the motor-drive pump shown in Fig. 1 package assembly schematic diagram.
Fig. 3 is the sectional drawing of Fig. 2.
Fig. 4 is the schematic perspective view of the stator yoke of the motor-drive pump shown in Fig. 1, stator tooth and staor winding, and in figure, part stator tooth is removed to clearly illustrate the structure of stator yoke.
Figure 5 shows that the schematic perspective view of a stator tooth of Fig. 4.
Figure 6 shows that the schematic perspective view of the stator yoke of the motor-drive pump of another embodiment of the present invention, stator tooth and staor winding, in figure, part stator tooth is removed to clearly illustrate the structure of stator yoke.
Figure 7 shows that the schematic perspective view of a stator tooth of Fig. 6.
Figure 8 shows that the schematic perspective view of the bearing of one embodiment of the invention.
[embodiment]
Referring to figs. 1 to Fig. 3, the motor-drive pump 10 that one embodiment of the invention provides, comprises the pump housing 20, the impeller 30 be contained in the pump housing 20, the motor 40 that drives described impeller 30 to rotate.
The described pump housing 20 comprises entrance 22 and outlet 24, and in the present embodiment, described entrance 22 is arranged along the axis of impeller 30, and outlet 24 is arranged along the circumference of the pump housing 20.When motor 40 drives impeller 30 rotates, fluid will be pumped to from pump housing entrance 22 and pump from outlet 24.
Described motor 40 comprises stator 50 and rotor 60.Described stator 50 comprises housing 52, is fixed to the stator yoke 54 of housing 52, some along the circumferential spaced stator tooth 56 of stator yoke 54 and the coil 58 be wound on stator tooth 56 and the axis 59 being fixed to housing 52.Described housing 52 comprise be positioned at central position supporting portion 522, around stator yoke 54 and stator tooth 56 cylinder portion 524 and be connected the end 526 in supporting portion and cylinder portion 524.One end of described axis 59 is fixed in the center hole 523 of supporting portion 522, and the other end stretches out housing 52 and is connected to the wheel hub of impeller 30 by bearing 72 thus rotatably supports impeller 30.In the present embodiment, described cylinder portion 524 is cylindric, and understandably, described cylinder portion 524 can also be designed to other shapes as square tubular etc. as required.The nearly pump housing 20 end in described cylinder portion 524 stretches out formation one flange 526, flange 526 establishes fixed hole, nearly housing 52 end of the pump housing 20 also establishes flange 26, and on flange 26, corresponding fixed hole place establishes through hole, and fixed block is as being locked in the fixed hole of housing 52 after the through hole of screw 80 grade through the pump housing 20.Preferably, between the pump housing 20 and stator case 52, seal ring 82 can be set thus make both be formed and be tightly connected.
Described rotor 60 comprises rotor yoke 62 and permanent magnet 64.In the present embodiment, described impeller 30 establishes annular fixing part 32 near one end of motor stator, described rotor yoke 62 and permanent magnet 64 are fixed in the annular fixing part 32 of impeller 30, permanent magnet 64 is positioned at outside rotor yoke 62, permanent magnet 64 and stator tooth 56 axially relative to and both keep at a certain distance away vertically so that rotor can relative stator rotate.In the present embodiment, described motor is disc type electric machine, and described rotor yoke 62 and permanent magnet 64 are all annular, and described permanent magnet 64 polarizes vertically, circumferentially has some magnetic poles, and the polarity of adjacent pole is contrary.
Refer to Fig. 4 and Fig. 5, in the present embodiment, described stator yoke 54 is disc type, and each stator tooth 56 corresponding establishes accepting groove 542, and accepting groove 542 both sides are established towards the outstanding guide rail 544 of accepting groove 542, and accepting groove 542 both-side ends establishes claw 546.Guide groove 562 is established in the both sides at the position connected with stator yoke 54 of described stator tooth 56, by the cooperation of guide rail 544 and guide groove 562, after each stator tooth 56 inserts the corresponding accepting groove 542 of stator yoke 54 vertically, the claw 546 of accepting groove 542 end both sides is out of shape towards stator tooth thus is fixed in accepting groove 542 by stator tooth 56.Preferably, the degree of depth of stator tooth 56 upper rail 562 equals the thickness of stator yoke 54 substantially, and like this, after stator tooth 56 is fixed to stator yoke 54, the end of stator tooth 56 is concordant with the end face of stator yoke 54.Understandably, described guide rail 544 can exchange with the position of guide groove 562.The central authorities of stator yoke 54 establish positioning hole 548, establish some through holes 549 around positioning hole 548, and some fixed blocks 80 are if screw 80 is through the supporting portion 522 being fixed to stator case 52 after the through hole 549 of stator yoke 54.Formation one boss 525 is given prominence to towards stator yoke 54 by the central authorities of the supporting portion 522 of stator case 52, described boss 525 is contained in positioning hole 548, like this, by ensureing that the coaxality of the positioning hole 548 of stator yoke 54 and the center hole 523 of supporting portion 522 can ensure the coaxality between stator and rotor.
Preferably, the accepting groove 542 of described stator yoke 54 extends along motor radial direction, and the width of accepting groove 542 radially increases gradually.The axial cross section of described stator tooth 56 is T-shaped, comprise tooth root 566 and crown 568, the area of crown 568 is greater than tooth root 566, and crown 568 is close to the end 526 of stator case 52, one end away from crown 568 of heel 566 is fixed to stator yoke 54, and stator coil 58 is wound on tooth root 566.The radial cross section of stator tooth 56 is inner small and outside big trapezoidal.
Fig. 6 and Figure 7 shows that the stator yoke of another embodiment of the present invention and the schematic diagram of teeth portion, in this embodiment, draw-in groove 564 is established in the both sides at the position connected with stator yoke 54 of described stator tooth 56, the degree of depth of draw-in groove 564 equals the thickness of stator yoke 54 substantially, the position of accepting groove 542 both sides and coordinating of stator tooth 56 draw-in groove 564 is positioned at by stator yoke 54, after described stator tooth 56 radially inserts the accepting groove 542 of stator yoke 54, the claw 546 of accepting groove 542 end both sides is out of shape towards stator tooth thus is fixed in accepting groove 542 by stator tooth 56.The position that described stator yoke 54 is positioned at accepting groove both sides is arranged in corresponding draw-in groove 564, thus fixed stator tooth 56 in the axial direction.
Refer to Fig. 3 and Fig. 8, the sliding bearing 72 that described clutch shaft bearing 72 is made for graphite, be fixed on the wheel hub of impeller 30, preferably, described impeller 30 is molding by insert the mode of (insert-molding) and rotor yoke 62, permanent magnet 64 and graphite bearing 72 fix.Second bearing 74 is installed on the supporting portion 522 of stator case 52, particularly, the nearly rotor-end corresponding graphite bearing 72 place indent of described supporting portion 522 forms host cavity 528, described second bearing 74 is fixedly contained in described host cavity 528, the end 526 of a little higher than stator case 52 of end face of the second bearing 74.Preferably, described second bearing 74 is ceramic bearing, the bottom of the second bearing 74 is also provided with resilient pad 529, axis 59 runs through described ceramic bearing 74 and resilient pad 529, ceramic bearing 74 axis 59 relative to resilient pad 529 is static, and graphite bearing 72 can with rotor synchronous rotary, like this, graphite bearing 72 can rotate relative to ceramic bearing 74.Preferably, nearly ceramic bearing 74 end face of described graphite bearing 72 establishes some grooves 722, and described groove 722 extends along rotor radial.Like this, during work, such as the water etc. of the liquid in the pump housing 20 can enter in groove 722, thus between graphite bearing 72 and ceramic bearing 74, forms moisture film to reduce friction between the two.Understandably, described groove 722 also can be arranged along non-static fields, as being arranged to scroll etc.
Preferably, the cross section of described graphite bearing 72 and ceramic bearing 74 is all annular, and graphite bearing 72 comprises large end and small end, and large end is near ceramic bearing 74, and small end is away from ceramic bearing 74, and the large external diameter held is slightly larger than the external diameter of ceramic bearing 74.Design like this, can prevent ceramic bearing 74 and impeller 30 wheel hub direct friction after graphite bearing 72 abrasion.
Preferably, described stator tooth 56 is made up by the mode of powder metallurgy of soft-magnetic composite material (SMC), and stator yoke 54 is formed to stacking along motor shaft by silicon steel sheet.Compared to the disc type electric machine that traditional stator tooth and stator yoke are all made up of silicon steel sheet, the electric machine structure of the present embodiment is simple, easy to assembly, processing cost is low.
Disk electric pump of the present invention is particularly useful for dishwasher etc.
For the person of ordinary skill of the art; without departing from the inventive concept of the premise; can also make some distortion and improvement, the mode be connected as adopted buckle between the pump housing with stator case except being fixedly connected with fixed block, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a motor-drive pump, comprise the pump housing, be contained in the impeller in the pump housing, drive the motor of described vane rotary, described motor comprises stators and rotators, it is characterized in that, described rotor comprises the rotor yoke and permanent magnet that are fixed to impeller, described stator comprises stator yoke, some circumferentially spaced stator tooths and the coil be wound on stator tooth, described stator yoke each stator tooth corresponding establishes accepting groove, claw is established in accepting groove end both sides, after each stator tooth inserts the corresponding accepting groove of stator yoke, the claw of accepting groove end both sides is out of shape towards stator tooth thus is fixed in accepting groove by stator tooth.
2. motor-drive pump as claimed in claim 1, it is characterized in that, draw-in groove is established in the both sides at the position connected with stator yoke of described stator tooth, each stator tooth is after the accepting groove of the direction insertion stator yoke of parallel accepting groove, and the position that described stator yoke is positioned at accepting groove both sides is arranged in corresponding draw-in groove respectively.
3. motor-drive pump as claimed in claim 1, it is characterized in that, guide groove/guide rail is established in the both sides at the position connected with stator yoke of described stator tooth, guide rail/guide groove established by the guide groove/guide rail of the corresponding stator tooth in the both sides of stator yoke accepting groove, to insert the accepting groove of stator yoke by each stator tooth that coordinates of guide groove and respective track along the direction of vertical accepting groove.
4. motor-drive pump as claimed in claim 1, it is characterized in that, described stator tooth is made up of soft-magnetic composite material.
5. motor-drive pump as claimed in claim 1, it is characterized in that, described stator yoke is formed to stacking along motor shaft by silicon steel sheet.
6. motor-drive pump as claimed in claim 1, is characterized in that, described accepting groove extends along motor radial direction, and the width of described accepting groove radially increases gradually.
7. the motor-drive pump as described in any one of claim 1 to 6, it is characterized in that, described stator also comprises the stator case be tightly connected with the pump housing, described stator case comprises the supporting portion being positioned at central position and the cylinder portion being positioned at outside, and stator tooth and stator yoke are contained in the space between supporting portion and cylinder portion.
8. motor-drive pump as claimed in claim 7, it is characterized in that, described stator also comprises axis, and one end of described axis is fixed to the supporting portion of stator case, and the other end is connected to impeller by clutch shaft bearing.
9. motor-drive pump as claimed in claim 8, it is characterized in that, the corresponding clutch shaft bearing position indent of nearly rotor-end of the supporting portion of described stator case thus form host cavity, the second bearing is fixed in described host cavity, and the antifriction Performance Ratio clutch shaft bearing of described second bearing is good.
10. motor-drive pump as claimed in claim 8, it is characterized in that, the end face of the nearly stator terminal of described clutch shaft bearing establishes some grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510496424.6A CN105370584B (en) | 2014-08-15 | 2015-08-13 | Electrodynamic pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014104041161 | 2014-08-15 | ||
| CN201410404116 | 2014-08-15 | ||
| CN201510496424.6A CN105370584B (en) | 2014-08-15 | 2015-08-13 | Electrodynamic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370584A true CN105370584A (en) | 2016-03-02 |
| CN105370584B CN105370584B (en) | 2019-05-21 |
Family
ID=55373094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510496424.6A Expired - Fee Related CN105370584B (en) | 2014-08-15 | 2015-08-13 | Electrodynamic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370584B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256926A (en) * | 2018-09-30 | 2019-01-22 | 王莉 | A kind of split type no guide rail food processor motor |
| CN111306031A (en) * | 2018-12-12 | 2020-06-19 | 杭州三花研究院有限公司 | Electric pump |
| CN111344026A (en) * | 2017-09-19 | 2020-06-26 | 阿比奥梅德欧洲股份有限公司 | Blood pump |
| CN112653272A (en) * | 2020-12-11 | 2021-04-13 | 清华大学 | Compressor and starting integrated motor integration of aircraft turbine engine |
| CN113364162A (en) * | 2021-06-21 | 2021-09-07 | 湖州小为科技有限公司 | Stator structure, rotor structure, ultrathin motor and stator forming process |
| CN113623234A (en) * | 2021-09-07 | 2021-11-09 | 华南泵业有限公司 | Water pump based on carbon graphite bearing and ceramic bearing |
| CN114829779A (en) * | 2019-12-16 | 2022-07-29 | Bsh家用电器有限公司 | Pump for water-conducting household appliances |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286263B (en) * | 2017-07-19 | 2021-11-02 | 德昌电机(深圳)有限公司 | Motor and fluid conveying device using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040234395A1 (en) * | 2003-05-20 | 2004-11-25 | Makoto Hatano | Magnetic coupling pump |
| JP2012029477A (en) * | 2010-07-23 | 2012-02-09 | Panasonic Electric Works Co Ltd | Motor, and pump and fluid circulation system including the same |
| CN102483074A (en) * | 2009-08-17 | 2012-05-30 | 阿莫泰克有限公司 | Water pump motor, and water pump using same |
| CN103075350A (en) * | 2011-10-26 | 2013-05-01 | 协磁股份有限公司 | Structure improvement of permanent magnet canned pump |
| CN103563218A (en) * | 2011-05-18 | 2014-02-05 | 阿莫泰克有限公司 | Water-pump motor using a waterproof stator, and water pump |
-
2015
- 2015-08-13 CN CN201510496424.6A patent/CN105370584B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040234395A1 (en) * | 2003-05-20 | 2004-11-25 | Makoto Hatano | Magnetic coupling pump |
| CN102483074A (en) * | 2009-08-17 | 2012-05-30 | 阿莫泰克有限公司 | Water pump motor, and water pump using same |
| JP2012029477A (en) * | 2010-07-23 | 2012-02-09 | Panasonic Electric Works Co Ltd | Motor, and pump and fluid circulation system including the same |
| CN103563218A (en) * | 2011-05-18 | 2014-02-05 | 阿莫泰克有限公司 | Water-pump motor using a waterproof stator, and water pump |
| CN103075350A (en) * | 2011-10-26 | 2013-05-01 | 协磁股份有限公司 | Structure improvement of permanent magnet canned pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111344026A (en) * | 2017-09-19 | 2020-06-26 | 阿比奥梅德欧洲股份有限公司 | Blood pump |
| CN109256926A (en) * | 2018-09-30 | 2019-01-22 | 王莉 | A kind of split type no guide rail food processor motor |
| CN111306031A (en) * | 2018-12-12 | 2020-06-19 | 杭州三花研究院有限公司 | Electric pump |
| CN114829779A (en) * | 2019-12-16 | 2022-07-29 | Bsh家用电器有限公司 | Pump for water-conducting household appliances |
| CN112653272A (en) * | 2020-12-11 | 2021-04-13 | 清华大学 | Compressor and starting integrated motor integration of aircraft turbine engine |
| CN113364162A (en) * | 2021-06-21 | 2021-09-07 | 湖州小为科技有限公司 | Stator structure, rotor structure, ultrathin motor and stator forming process |
| CN113623234A (en) * | 2021-09-07 | 2021-11-09 | 华南泵业有限公司 | Water pump based on carbon graphite bearing and ceramic bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105370584B (en) | 2019-05-21 |
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| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 |