CN104979925A - Motor and household electrical appliance provided with the motor - Google Patents
Motor and household electrical appliance provided with the motor Download PDFInfo
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- CN104979925A CN104979925A CN201410146620.6A CN201410146620A CN104979925A CN 104979925 A CN104979925 A CN 104979925A CN 201410146620 A CN201410146620 A CN 201410146620A CN 104979925 A CN104979925 A CN 104979925A
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- motor
- magnetic pole
- holddown groove
- pole post
- rotor
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Abstract
The invention brings forward a motor. The motor comprises a stator and a rotor, wherein the stator comprises a stator ring and more than two magnetic columns uniformly distributed at the inner edge of the stator ring; the rotor is arranged in a rotor casing; the more than two magnetic columns are also uniformly distributed around the rotor casing, the outer wall of the rotor casing is provided with fixation grooves for accommodating the magnetic columns, and the magnetic columns are inlaid and fixed in the fixation grooves. According to the invention, through arranging the fixation grooves for accommodating the magnetic columns on the outer wall of the rotor casing, the width of air gaps between the magnetic columns and the outer surface of the rotor can be greatly reduced, the magnetic flux is increased, and the motor efficiency is greatly improved. Besides, the invention also brings forward a household electrical appliance provided with the motor.
Description
Technical field
The present invention relates to a kind of motor.
The invention still further relates to the household electrical appliance with above-mentioned motor.
Background technology
Existing motor is primarily of two parts composition and stators and rotators.Stator is fixed, and rotor can do 360 degree of rotations, so must have certain gap between the two, i.e. air gap, ensures that rotor does not rub with stator when rotated.Air gap is the gap between static magnetic pole of the stator and the rotor of rotation.The size of air gap determines the size of magnetic flux, if air gap is comparatively large, magnetic leakage is just many, and the efficiency of motor will reduce; If air gap is too little, can easily and stator friction and sweep stator thorax when rotor rotates.Therefore, need air gap to be controlled, within a rational scope, just can reach optimum efficiency.
Summary of the invention
The object of the present invention is to provide a kind of motor with optimizing structure design.
To achieve these goals, a kind of motor, it comprises stators and rotators, and described stator comprises stator circle and equally distributed plural magnetic pole post on this stator circle inner edge; Described rotor is arranged in rotor case; Described in two or more, magnetic pole post is also uniformly distributed around described rotor case, and described rotor case outer wall is provided with the holddown groove for holding described magnetic pole post, and described magnetic pole post is inlayed and is fixed in described holddown groove.
By arranging the holddown groove for receiving magnetic pole post on rotor case outer wall, greatly can reduce the width of air gap between magnetic pole post and rotor outer surface, increasing magnetic flux, substantially increasing the efficiency of motor.The air gap of motor generally comprises two parts: the wall thickness of rotor case and the gap between rotor case inner wall surface and rotor.The wall thickness that the bottom wall thickness of the holddown groove of rotor case compares rotor case other parts diminishes, and is fixed on that magnetic pole post in this holddown groove is also corresponding to the air gap between rotor to have diminished.
As a further improvement on the present invention, described magnetic pole post is provided with expanding part near one end of described rotor case, and this expanding part is inlayed and entered in described holddown groove.
The width of this expanding part and the width of holddown groove match, and expanding part is just in time fixedly contained in this holddown groove, thus realize more firm interfixing.
As a further improvement on the present invention, described holddown groove axially extends on described rotor case outer wall, and described magnetic pole post can slide axially and inlay and be fixed in this holddown groove in this axial restraint groove.
Setting like this, magnetic pole post can slide axially from rotor case one end and enter holddown groove, facilitates magnetic pole post to be fixedly installed in above rotor case.
As a further improvement on the present invention, the axial both sides of described holddown groove are provided with reinforcement.
The thickness of reinforcement, much larger than the wall thickness bottom holddown groove, so can strengthen the intensity of whole rotor case, damages to prevent rotor case to be subject to large impact.
As a further improvement on the present invention, described reinforcement is provided with the arc covers circumferentially extended.
As a further improvement on the present invention, described magnetic pole post expanding part is inlayed in the described holddown groove be fixed on below described arc covers.
Arc covers circumferentially extends and covers partial fixing groove, makes partial fixing groove be formed with larger fixing spatial accommodation.Magnetic pole post just in time can hold to be fixed within this spatial accommodation, magnetic pole post mainly concentrates on reinforcement and arc covers for the force position of rotor case simultaneously, reinforcement plays better supporting role to magnetic pole post together with arc covers, greatly reduces magnetic pole post to the active force bottom holddown groove.
As a further improvement on the present invention, described magnetic pole post is so fixed in described holddown groove: when described magnetic pole post is inlaid in described holddown groove, and the both sides end of described magnetic pole post expanding part is resisted against on the reinforcement on described holddown groove both sides.
So, magnetic pole post mainly concentrates on reinforcement for the force position of rotor case, greatly reduces magnetic pole post to the active force bottom holddown groove.
As a further improvement on the present invention, described rotor case is that plastics are made.
In addition, the invention allows for a kind of household electrical appliance with water running, particularly dishwasher or washing machine, it comprises the motor as described in above any one.
Subsequent by be with the household electrical appliance of water running to be implemented as dishwasher as most preferred embodiment to describe the present invention in detail.But this does not represent that scope is just confined to dishwasher.
Accompanying drawing explanation
Fig. 1 is the structural representation of domestic bowl-washing in preferred embodiment;
Fig. 2 is the overall structure schematic diagram of motor of the present invention;
Fig. 3 is the structural representation after motor of the present invention removes motor casing;
Fig. 4 is the vertical planing surface figure of Fig. 3;
Reference numeral: 100-motor; 10-motor casing; 20-stator; 21-stator circle; 22-magnetic pole post; 23-expanding part; 30-rotor case; 31-holddown groove; 32-reinforcement; 33-arc covers; 40-rotor; 50-impeller; 60-bearing holder (housing, cover); L1-end play; L2-radial clearance; GS-dishwasher; BO-base assemblies; IR-inner space; GK-plate-basket; SA-spray arm; PS-pump pond; WZ-water heating system; UP-circulating pump; LP-discharge liquid pump; EL-water discharge spout road; ZL-feeding pipe.
Embodiment
Dishwasher GS shown in Fig. 1 comprises the inner space IR serving as washing container, and can open and close this inner space by means of door (sign), this door can be pivotally connected on dishwasher GS, for loading and unloading object.Plate-basket GK for receiving article to be cleaned is arranged in the inner space IR of dishwasher GS, and these article to be cleaned can remove, so that loading and unloading from the inner space IR of dishwasher GS.
In order to the clean article to be cleaned left in plate-basket GK, the spray equipment being implemented as the spray arm SA for applying fluid to article to be cleaned is arranged in the inner space IR of dishwasher GS, wherein, fluid can be the water being applied with such as cleaning agent or flushing host, thus can realize the cleaning action to article to be cleaned and/or the drying without spot.From article to be cleaned drippage fluid collection among the PS of pump pond, this pump pond is arranged in the bottom section of inner space IR of dishwasher GS.In the PS of pump pond, be also provided with filter (sign), dirt or particle can be separated from circulating fluid by means of this filter.
Spray arm SA is connected to circulating pump UP by means of feeding pipe ZL with fluid-conducting fashion, and other Dishwasher components in the base assemblies BO below the inner space IR of this circulating pump UP and dishwasher GS are neighboringly arranged.In operation, time namely in circulating pump UP runs, circulating pump UP sucks the fluid be collected in the PS of pump pond, and fluid is sent to spray arm SA by feeding pipe ZL.In the present example embodiment, in order to be heated by the fluid of this circulating pump UP, circulating pump UP comprises the water heating system WZ of the integrated form for adding hot fluid.Alternatively, independent continous way water also can be provided to heat itself or other water heating system to add hot fluid.In addition, the pump LP of discharge liquid is also provided with in dishwasher GS, for discharging the liquid of the inner space IR of dishwasher GS, the pump LP of this discharge liquid can be connected to pump pond PS by fluid-conducting fashion, and also may be connected to the water discharge spout road EL in domestic household effluent discharge pipe network.There is in positive displacement pump LP the motor 100 that drives water impeller 50.
As shown in Figure 2, motor 100 comprises a motor casing 10, motor stator (not shown), stator winding (not shown) and rotor case (not shown) is provided with in this motor casing 10, in rotor case, be then provided with the rotor (not shown) in its rotary motion, in rotor, rotating shaft (not shown) be also installed.Rotating shaft one end is provided with water impeller 50, and rotor rotates and drives rotating shaft to rotate, and then driving water impeller rotates and discharges the liquid of dish washer interior space IR.The rotating shaft other end is then through the bearing holder (housing, cover) 60 being installed on rotor case end.
Shown in composition graphs 3 and Fig. 4, stator 20 comprises stator circle 21 and equally distributed three magnetic pole posts 22 on this stator circle 21 inner edge.Magnetic pole post 22 one end has expanding part 23.Three magnetic pole posts 22 are also circumferentially uniformly distributed around rotor case 30 same.Rotor case 30 outer wall is provided with axially extended holddown groove 31 on this outer wall.Holddown groove 31 has three and is uniformly distributed on rotor case 30 outer wall.Each holddown groove 31 liang of axial limit ends are then provided with reinforcement 32, and the thickness of reinforcement 32, much larger than the wall thickness bottom holddown groove 31, so can strengthen the intensity of whole rotor case 30, damage by large impact to prevent rotor case 30.Each reinforcement 32 is provided with the arc covers 33 circumferentially extended, and all arc covers 33 are also circumferentially uniformly distributed around rotor case 30 same.
When whole stator 20 is installed in rotor case 30 expanding part 23 of three magnetic pole posts 22 respectively correspondence to be placed among holddown groove 31 and to slide axially along holddown groove 31, and then inlay in the holddown groove 31 that snaps in below arc covers 33 and realize fixing.The width of magnetic pole post expanding part 23 and the width of holddown groove 31 match, and expanding part 23 is just in time fixedly contained in this holddown groove 31, thus realize more firm interfixing.The both sides end of magnetic pole post expanding part 23 is resisted against on the reinforcement 32 on holddown groove 31 both sides, and magnetic pole post 22 mainly concentrates on reinforcement 32 for the force position of rotor case 30, greatly reduces the active force bottom magnetic pole post 22 pairs of holddown grooves 31.
Arc covers 33 circumferentially extends and covers partial fixing groove 31, makes partial fixing groove 31 be formed with larger fixing spatial accommodation.Magnetic pole post expanding part 23 just in time can hold to be fixed within this spatial accommodation, magnetic pole post expanding part 23 mainly concentrates on reinforcement 32 and arc covers 33 for the force position of rotor case 30 simultaneously, reinforcement 32 plays better supporting role to magnetic pole post 22 together with arc covers 33, greatly reduces the active force bottom magnetic pole post 22 pairs of holddown grooves 31.
By arranging the holddown groove 31 for receiving magnetic pole post 22 on rotor case 30 outer wall, greatly can reduce the width of air gap between magnetic pole post 22 and rotor 40 outer surface, increasing magnetic flux, substantially increasing the efficiency of motor.The air gap of motor generally comprises two parts: the wall thickness of rotor case 30 and the gap between rotor case 30 inner wall surface and rotor 40.The wall thickness that the bottom wall thickness of the holddown groove 31 of rotor case 30 compares rotor case 30 other parts diminishes, be fixed on that magnetic pole post 22 in this holddown groove 31 is also corresponding to the air gap between rotor 40 to have diminished, so the magnetic flux of motor also becomes large, the efficiency of motor also just improves.
A series of detailed description listed is above only illustrating for feasibility execution mode of the present invention, and they are also not used to limit the scope of the invention.Therefore, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. a motor, it comprises stator (20) and rotor (40), and described stator (20) comprises stator circle (21) and equally distributed plural magnetic pole post (22) on this stator circle (21) inner edge; Described rotor (40) is arranged in rotor case (30); Described in two or more, magnetic pole post (22) is also uniformly distributed around described rotor case (30), it is characterized in that, described rotor case (30) outer wall is provided with the holddown groove (31) for holding described magnetic pole post (22), and described magnetic pole post (22) is inlayed and is fixed in described holddown groove (31).
2. motor as claimed in claim 1, it is characterized in that, described magnetic pole post (22) is provided with expanding part (23) near one end of described rotor case (30), and this expanding part (23) is inlayed and entered in described holddown groove (31).
3. motor as claimed in claim 1 or 2, it is characterized in that, described holddown groove (31) axially extends on described rotor case (30) outer wall, and described magnetic pole post (22) can slide axially and inlay and be fixed in this holddown groove (31) in this axial restraint groove (31).
4. motor as claimed in claim 1 or 2, it is characterized in that, the axial both sides of described holddown groove (31) are provided with reinforcement (32).
5. motor as claimed in claim 4, it is characterized in that, described reinforcement (32) is provided with the arc covers (33) circumferentially extended.
6. motor as claimed in claim 5, it is characterized in that, described magnetic pole post expanding part (23) is inlayed in the described holddown groove (31) be fixed on below described arc covers (33).
7. motor as claimed in claim 4, it is characterized in that, described magnetic pole post (22) is so fixed in described holddown groove (31): when described magnetic pole post (22) is inlaid in described holddown groove (31), the both sides end of described magnetic pole post expanding part (23) is resisted against on the reinforcement (32) on described holddown groove (31) both sides.
8. the motor as described in above arbitrary claim, is characterized in that, described rotor case (30) is made for plastics.
9. the household electrical appliance with water running, is characterized in that comprising motor as described in above arbitrary claim.
10. band water running household electrical appliance as claimed in claim 9, it is characterized in that, these household electrical appliance are a kind of dishwasher (GS) or washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146620.6A CN104979925A (en) | 2014-04-11 | 2014-04-11 | Motor and household electrical appliance provided with the motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146620.6A CN104979925A (en) | 2014-04-11 | 2014-04-11 | Motor and household electrical appliance provided with the motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104979925A true CN104979925A (en) | 2015-10-14 |
Family
ID=54276147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410146620.6A Pending CN104979925A (en) | 2014-04-11 | 2014-04-11 | Motor and household electrical appliance provided with the motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104979925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099009A (en) * | 2014-04-24 | 2015-11-25 | 博西华电器（江苏）有限公司 | Motor and household appliance with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960468A (en) * | 1946-07-16 | 1976-06-01 | The United States Of America As Represented By The United States Energy Research And Development Administration | Fluid lubricated bearing assembly |
| US5990588A (en) * | 1996-12-13 | 1999-11-23 | General Electric Company | Induction motor driven seal-less pump |
| CN201854101U (en) * | 2010-11-26 | 2011-06-01 | 杭州米格电机有限公司 | Split stator for servo motor |
| CN102355069A (en) * | 2011-09-09 | 2012-02-15 | 常州新亚电机有限公司 | Electric motor used for wet-type operation pump and assembly method thereof |
| CN203481938U (en) * | 2013-08-14 | 2014-03-12 | 博西华电器（江苏）有限公司 | Motor stator |
-
2014
- 2014-04-11 CN CN201410146620.6A patent/CN104979925A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960468A (en) * | 1946-07-16 | 1976-06-01 | The United States Of America As Represented By The United States Energy Research And Development Administration | Fluid lubricated bearing assembly |
| US5990588A (en) * | 1996-12-13 | 1999-11-23 | General Electric Company | Induction motor driven seal-less pump |
| CN201854101U (en) * | 2010-11-26 | 2011-06-01 | 杭州米格电机有限公司 | Split stator for servo motor |
| CN102355069A (en) * | 2011-09-09 | 2012-02-15 | 常州新亚电机有限公司 | Electric motor used for wet-type operation pump and assembly method thereof |
| CN203481938U (en) * | 2013-08-14 | 2014-03-12 | 博西华电器（江苏）有限公司 | Motor stator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099009A (en) * | 2014-04-24 | 2015-11-25 | 博西华电器（江苏）有限公司 | Motor and household appliance with same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |