CN1950560A - Motor's for washing machine - Google Patents

Abstract

The present invention is related to a motor (60) for a washing machine, in which an insulator (116) structure is changed so as not to expose a coil (114) to an outside of the stator (110) for preventing accidents of electric shock caused by negligence of safety from occurring in advance, to enhance safety of the motor (60), and damage to the coil (114), and which enables to reduce magnetic attraction force and prevent interference between the stator (110) and the rotor (120) caused by the non-uniform gap between the stator (110) and the rotor (120). To achieve this, the present invention provides a motor (60) for a washing machine including a stator (110) including a substantially annular core (112) having a stack of steel pieces (1129), a coil (114) wound on the core (112) having an AC power applied thereto, and an insulator (116) mounted on an outside surface of the core (112), the insulator (116) having one edge extended to cover the coil (114), wherein a plurality of the coils (114) are wound along the circumference of the core (112), and connected in parallel.

Description

Motor's for washing machine

Technical field

The present invention relates to the outer rotor type induction motors of washing machine, more particularly, the outer rotor type induction motors of structure that related to the improvement that is used for washing machine, its performance improves, and guarantees safety, and has prevented the damage to stator coil.

Background technology

Usually, washing machine utilizes the effect of water and washing agent to eliminate dirt from the clothes and the bed clothes (hereinafter referred to as clothing) that remain in the washing bucket by cleaning, rinsing, centrifugal rotation, drying and other steps washing clothes.

Fig. 1 illustrates a kind of cross section of washing machine, and it has used the motor with correlation technique, and Fig. 2 illustrates the perspective view of the motor's for washing machine of correlation technique.

With reference to Fig. 1, the washing machine of correlation technique is provided with rack 2, forms its outside; Have supporting member 4a and be suspended in outer bucket 4 in the rack 2, it has the space that keeps rinse water; Rotation is installed in the interior bucket 8 in the outer bucket 4, and its bottom is equipped with commutator 6, and the water hole is arranged on the sidewall; The below that is positioned at outer bucket 4 is used to provide the motor 30 of the driving force of rotating commutator 6 and bucket 8; Be fixed tightly in the carrying housing 10 of outer bucket center of underside regularly, the turning cylinder 36 of motor 30 is supported in its rotation; And the clutch mechanism 20 that between carrying housing 10 and motor 30, is used to connect/disconnect the driving force that is sent to commutator 6 and interior bucket 8.

Outer bucket 4 has drainage cell 12 in its underpart, and the rinse water that remain in the outer bucket 4 are discharged to the washing machine outside.

Drainage cell 12 is provided with draining valve 14, and it is communicated with outer barrel 4 interior osculum 4b; Be positioned at the drain motor 16 of outer bucket bottom one side; And be used to guide rinse water to be discharged to the scupper hose 18 in the washing machine outside via draining valve.

Outside being fixed tightly in regularly the carrying housing 10 of bucket 4 center of underside below, be provided with the stator that is fixed tightly in this regularly.The turning cylinder 36 of motor 30 runs through the upper and lower surface of carrying housing 10, is supported by bearing 10a rotation at upside, and is supported by the downside of the inboard of carrying housing 10.

Motor 30 is outer-rotor type BLDC motors (brushless DC motor), and when 30 controls of BLDC motor were controlled the speed of motor 30 to its power that provides, this motor rotated commutator 6 or interior bucket 8 with different speed.

The turning cylinder 36 of motor 30 is provided with hollow rotating shaft 36a, and its upper end is connected with interior bucket 8; And clean axle 36b, and its rotation is installed in the hollow rotating shaft 36a, and the described lower end of cleaning axle is connected with motor 30, and the upper end is connected with commutator 6.

Meanwhile, clutch mechanism 20 is provided with coupling stopper 22, and it is fixed tightly in the downside of carrying housing 10 regularly; Clutch Coupling device 24, it utilizes key to be coupling in the lower end of rotating shaft 36a, can endwisely slip; Clutch lever 26, the one side is connected on the Clutch Coupling device 24, thereby makes Clutch Coupling device 24 move axially and motor 30 or 22 engagements of coupling stopper; And the clutch motor 28 that is positioned at the opposite side of clutch lever 26, it is used for operated clutch bar 26.

Clutch Coupling device 24 has first clutch gear 24a on lower surface, be used for rotor with motor 30 and overlap second clutch gear 44a engagement on 44 (see figure 2)s; And the first lock gear 24b that is positioned at its upper surface, be used for and the second lock gear 22a engagement of coupling on the stopper 22.

Therefore, if clutch lever 26 makes Clutch Coupling device 24 move down, then first clutch gear 24a and second clutch gear 44a engagement, thereby transmit power to rotating shaft 36a from motor 30, if and clutch lever 26 makes Clutch Coupling device 24 move up, the then first lock gear 24b and second lock gear 22a engagement, thus make the power from motor 30 can't be sent to rotating shaft 36a.

In above-mentioned washing machine, if the DC power supply is applied on the motor 30, and clutch mechanism 20 makes Clutch Coupling device 24 and coupling stopper 22 mesh, then power only is sent on the commutator 6 via cleaning axle 36b from motor 30, and, can implement the cleaning and the rinsing of clothing by commutator 6 by the speed of control motor 30.

If the DC power supply is applied on the motor 30, and clutch mechanism 20 makes Clutch Coupling device 34 and motor 30 mesh, then power via clean axle 36b and rotating shaft 36a from motor 30 be sent to simultaneously commutator 6 and interior bucket 8 both, and by high-speed drive motor 30, both all run up commutator 6 and interior bucket 8, thus in the clothes expressed water.

Meanwhile, with reference to Fig. 2, the motor of correlation technique is provided with stator 32, and it is fixed tightly in the bottom side of carrying housing 10 regularly; Be mounted to the outside rotor 34 that is centered around stator 32 with rotation, thereby can be rotated by the electromagnetic force effect between stator 32 and the rotor 34.

Stator 32 is provided with annular core 37, and it has a plurality of steel discs of a pile; And the coil 38 that is centered around on the core 37 and is connected with external power source.

Core 37 has insulator 39 at upper and lower sides, and a plurality of fastening part 37a, and they are along inside circumference formation and from then on to inner process.Each fastening part 37a has fastener hole, is used to utilize fastening bolt 37b to be fastened on the downside of carrying housing.

Rotor 34 is provided with rotor rack 40, and it is around the excircle and the bottom side of stator 32; Rotor magnet 42, it is installed on the inner periphery of rotor rack 40, thereby can be rotated by the electromagnetic force effect between stator 32 and the rotor magnet 42; And the rotor cover 44 at center that is positioned at the lower surface of rotor rack 40, it is used for the lower end of turning cylinder 26 is fastened on this.

Rotor rack 40 open tops of cylindricality, this rotor rack is provided with the rotor magnet that is positioned at inner surface and tightens up part 40d, and it is used for bearing and tightens up rotor magnet 42; Tighten up part 40a with the cover that is positioned at the lower surface center, it is used to pass turning cylinder, and rotor cover 44 is fixed tightly in this.

Tighten up the outside of part 40a at the cover of the lower surface that is positioned at rotor rack 40, a plurality of pore 40b and lower blade 40c down are set, layout along the circumferential direction separates each other.

Lower blade 40c is arranged on down the side of pore 40b, and lower blade 40c and all radially extensions of following pore 40b.Therefore, when rotor rack 40 rotated, air was blown into the motor inboard, cooling motor 34 and stator 32 from following pore 40b.

Rotor magnet 42 is a plurality of permanent magnets, tightens up part 40d with adhesive bond at the rotor magnet of rotor rack 40 with respect to the external peripheral surface of stator 32, forms the clearance G (see figure 1) between rotor magnet 42 and stator 32.

Rotor cover 44 is provided with the 44b of cover portion, is used for placing the lower end of the cleaning axle 36b of turning cylinder 36 within it, and this rotor is enclosed within has second clutch gear 44 on the external peripheral surface; And around the flange portion 44c of the 44b of cover portion, the cover that is used to tighten up rotor rack 40 tightens up part 40a.

The 44b of cover portion forms with metal.

Flange portion 44c is the injection molding plastic, is used for electric insulation between 44b of cover portion and rotor rack 40, and this flange portion has the fastener hole 44d that tightens up the fastener hole on the part 40a corresponding to cover, is used to utilize clamp structure 46 fastening.

Yet, because insulator 29 is arranged on the upper and lower surface of core 37 of inboard of coil 38, except the part of coil 38 coilings, so the coil 38 of the stator of the motor of the washing machine of correlation technique is exposed to outside the stator 32.

Therefore, have from the Danger Electric shock risk that is applied to the power supply on the coil 38, and the danger that in transportation, assembling and the maintenance process of stator 32, damages coil 38.

Meanwhile, with reference to Fig. 3 and 4, in the motor's for washing machine of correlation technique, coil 38 is along the circumference coiling of the core 37 of stator 32, and coil 38 is provided with the main circuit with fixed-direction rotary rotor 34, and the electronic circuit of rotary rotor 34 in the opposite direction.Each main circuit and electronic circuit all have the independent coil 38 that forms 8 utmost point series circuits.

Meanwhile, in the process of CD-ROM drive motor 30, if rotor 34 breaks away from the fixed position, cause the gap " G " between stator 32 and the rotor 34 inhomogeneous, thereby cause the electromagnetic force between stator 32 and the rotor 34 inhomogeneous, then have and act between stator 32 and the rotor 34, the magnetic pull that causes by the non-homogeneous gap between stator 32 and the rotor 34.

In view of the above, motor 30 be absorbed in the torque that causes by magnetic pull reduce, take place the vibration and the interference between rotor 34 and stator 32.

Meanwhile, outer rotor type induction motors also has the problems referred to above.

Summary of the invention

The purpose of this invention is to provide a kind of motor stator that is used for washing machine, wherein changed the structure of insulator, do not allowed coil exposed, prevented the electric shock accidents that causes by neglect of safety in advance in the outside of stator, thereby improve the security of motor, reduce damage coil.

Another object of the present invention provides a kind of motor's for washing machine, its reduce magnetic pull and prevent stator and rotor between the interference that causes by the non-homogeneous gap between them.

In the first aspect present invention that realizes purpose of the present invention, motor's for washing machine comprises stator, and it comprises the core that is essentially annular, and this core has a pile steel disc; Be wound on the coil of this core, apply AC power supplies on it; Be installed in the insulator on this core outer surface, an one edge extends this coil of covering.

In a second aspect of the present invention that realizes purpose of the present invention, motor's for washing machine comprises stator, applies AC power supplies on it; Be positioned at the stator outside rotor, it is mounted under the interaction of electromagnetic force and rotates with respect to stator, and wherein this stator comprises the annular core that is fixed tightly in regularly on the outer bucket, and it has a plurality of steel discs of a pile; With a plurality of coils, and be connected in parallel along the circumference coiling of this core.

In a third aspect of the present invention that realizes purpose of the present invention, motor's for washing machine comprises stator, and it comprises the core that is essentially annular, and this core has a pile steel disc; Be wound on the coil of this core, apply AC power supplies on it; With the insulator on the outer surface that is installed in this core, one edge extends and covers coil, and wherein a plurality of coils are along the circumference coiling of this core, and is connected in parallel.

In a fourth aspect of the present invention that realizes purpose of the present invention, motor's for washing machine comprises stator, applies AC power supplies on it; Be arranged to bottom side and outside rotor frame around this stator; Be positioned at the rotor core on the inner circumferential surface of this rotor rack, it is mounted to by the interaction of electromagnetic force and rotates with respect to this stator; And be positioned at rotor core device for fastening on the rotor rack, and wherein this stator comprises the core that is essentially annular, it has a pile steel disc; Be wound on the coil of this core, apply AC power supplies on it; With the insulator on the outer surface that is installed in this core, an one edge extends this coil of covering, and wherein a plurality of coils are connected in parallel along the circumference coiling of this core.

Last insulator and following insulator are installed in respectively on the upper and lower surface of stator core, the outward flange of following insulator is with to recessed parabola shaped extension, thereby center on the lower coil part on the bottom side that is arranged in core, make coil can not be exposed to the outside of stator, prevented in advance because the electric shock accidents that neglect of safety causes takes place, cut off the infiltration of rinse water to coil inside, thus the security that has improved motor.

The outside that coil is not exposed to motor has prevented in transportation, assembling and the maintenance process at stator the damage to coil.

4 coil windings of core are connected in parallel, and form 8 utmost points, 4 parallel circuits of main parallel circuit and sub-parallel circuit on stator, can reduce the magnetic pull that caused by the non-homogeneous gap between stator and the rotor, have prevented the interference between stator and the rotor thus.

Magnetic pull reduce to have reduced vibration in the CD-ROM drive motor process, and prevented the decline of moyor, thereby improved the reliability of motor.

To the inordinate wear and the damage of interfering between stator and the rotor that prevent to allow to prevent motor, thus the life-span of prolongation motor, and the security that improves motor.

Description of drawings

Fig. 1 illustrates the sectional view of the washing machine of the motor that has adopted correlation technique;

Fig. 2 illustrates the decomposition diagram of the motor's for washing machine of correlation technique;

Fig. 3 illustrates the line graph of the stator coil among Fig. 2;

Fig. 4 illustrates the circuit diagram of the line among Fig. 3;

Fig. 5 illustrates the sectional view of the washing machine that has adopted motor according to a preferred embodiment of the invention;

Fig. 6 illustrates perspective view, and it shows the critical component among Fig. 5;

Fig. 7 illustrates sectional view, and it shows the critical component among Fig. 5;

Fig. 8 illustrates along the sectional view of the A-A line among Fig. 6;

Fig. 9 illustrates the decomposition diagram of motor's for washing machine according to a preferred embodiment of the invention;

Figure 10 illustrates the bottom view of the stator among Fig. 9;

Figure 11 illustrates along the sectional view of the B-B line among Figure 10;

Figure 12 illustrates the line graph of the coil in the stator among Fig. 9;

Figure 13 illustrates the line graph of Figure 12; With

Figure 14 illustrates the reference diagram that is used to explain the magnetic pull that is caused by the non-homogeneous gap between stator and the rotor.

The specific embodiment

Embodiments of the invention are described below with reference to accompanying drawings.

Fig. 5 illustrates the sectional view of the washing machine that has adopted motor according to a preferred embodiment of the invention, and Fig. 6 and 7 is respectively perspective view and the sectional view that illustrates the critical component of Fig. 5, and Fig. 8 is the sectional view that illustrates along the A-A line among Fig. 6.

With reference to Fig. 5-8, washing machine comprises its outside rack 52 of formation; Utilize supporting member 54a to be suspended in outer bucket 54 in the rack 52, its inside has the space that keeps rinse water; Rotation is installed in the interior bucket 58 in the outer bucket 54, and its bottom is equipped with commutator 56, and the water hole is arranged on the sidewall; Be positioned at the motor 60 of outer bucket 54 belows, it provides driving force to rotation commutator 56 and interior bucket 58; And motor 60 and outside the power transmission unit 80 of bucket between 54, it optionally connects/disconnects the horse district power that is sent to commutator 56 and interior barrel 58.

At the top of rack 52, be provided with top cover 62, its have be used for to/from the clothing opening of washing machine introducing/taking-up clothing; And below rack 52, be provided with base portion 64, it is provided with leg-supporting, is used for support washing machine.On top cover 62, be provided with lid 62a, its rotation is installed with opening/closing clothing opening; And the side at top cover 62 is provided with water supply unit 66, and its water with supply offers washing machine.

Water supply unit 66 comprises water supply hose 66a, and being used for provides rinse water from the washing machine outside; With feed water valve 66b, be used to cut off the rinse water that is supplied to water supply hose 66a, and in the water supply runner, be provided with detergent box 66c, make washing agent be rushed at outer bucket 54 by water through feed water valve 66b.

Outer bucket 54 has drainage cell 70 in the bottom, is used for discharging the rinse water that remains in outer barrel 54 to the washing machine outside.

Drainage cell 70 comprises draining valve 72, and the one end is communicated with outer barrel 54 interior osculum 54b; Be positioned at the drain motor 74 of outer bucket 54 bottom sides, be used to control the opening/closing of draining valve 72; With the scupper hose 78 that the other end with draining valve 72 is communicated with, be used to guide rinse water to be discharged to the washing machine outside via draining valve 72.

Osculum 54b is formed on the bottom of outer bucket 54, thereby is communicated with the inboard of outer bucket 54, and drain motor 74 is utilized independent connecting elements and draining valve 72 couplings.

Motor 60 is outer rotor type induction motors, applies AC power supplies on it, and its speed is suitably reduced by power transmission unit 80.

Meanwhile, power transmission unit 80 comprises the housing 82 of the center of underside that is installed in outer bucket 54, tightens up the stator of motor 60 on this housing bottom side regularly; Rotation is installed in the cylinder 84 in the housing 82, and the planetary gear 83 that is used for reducing motor 60 speed is arranged on it; Hollow rotating shaft 86, its lower end are force-fitted in the cylinder 84, and its upper end is connected on the interior bucket 58; Rotation is installed in the cleaning axle 88 in the hollow rotating shaft 86, and its lower end is connected with commutator 56 with planetary gear 83 engagements and upper end; Be installed in the arrestment mechanism 90 that is used for brake power delivery unit 80 in the housing 82; And be used to connect/disconnect the clutch mechanism 100 that the power between motor 60 and the cylinder 84 transmits below the cylinder 84.

At the upside and the downside of this housing, be provided with and be respectively applied for the bearing 82a of back-up roller 84 and rotating shaft 86 rotatably, and, be provided with the turning cylinder 130 of rotation motor 60 mounted thereto in the bottom of the inboard of cylinder 84.

Mesh with planetary gear 83 in cylinder 84 upper end of turning cylinder 130, and between cylinder 84 and turning cylinder 130, and between rotating shaft 86 and cleaning axle 88, also be provided with oilless bearing.

Rotating shaft 86 upper ends are connected the bottom of bucket 58 in this wheel hub is fixed tightly in regularly with interior bucket wheel hub 58a; This lower end is force-fitted in the top of cylinder 84.Rotating shaft 86 is so installed, thus bucket 58 in will being transferred to by the power that clutch mechanism 100 is transferred to the motor 60 of cylinder 84.

With reference to Fig. 6, arrestment mechanism 90 comprises that the one end is fixed tightly in the brake band 92 of housing 82, and arranges around the excircle of cylinder 84; Brake lever 94, the other end of brake band 92 utilize hinge to connect thereon, and this brake lever rotation is installed on the housing 82; And brake motor 96 (see figure 6)s, it is connected on the brake lever 94, makes the excircle of brake band 92 tension drums 84.

Brake motor 96 (see figure 6)s are installed in the bottom side of outer bucket 54, are used for applying the power that is higher than predetermined value to brake lever 94, thereby utilize brake band 92 to force to stop cylinder 84.Therefore, require brake motor 96 that enough capacity are arranged, thereby make brake band 92 guarantee to have enough braking power to come brake drum 84.

Clutch mechanism 100 comprises coupling stopper 102, and it is fixed tightly in the bottom side of housing 82 regularly; Clutch Coupling device 104, it utilizes key to be connected the lower end of cylinder 84, thereby can move up and down; Clutch lever 106, its rotation are installed on the clutch stopper 102, and an end is connected on the Clutch Coupling device 104; And clutch motor 108, the other end that it is connected clutch lever 106, be used to connect/power between cut-off clutch coupler 104 and the motor 60 transmits.

Clutch Coupling device 104 comprises first clutch gear 104a, it is outstanding form with motor 60 on the lower surface of second clutch gear 166 engagements, and utilize key to be connected on the cylinder 84 of clutch mechanism 100, thus can be above/move down.

Clutch lever 106 1 ends are connected on the Clutch Coupling device 104, and the other end is connected on the clutch motor 108, and the mid point between an end and the other end utilizes hinge to be rotatably connected on coupling stopper 102.

Clutch motor 108 is installed in the bottom side of outer bucket 54, is used for mobile clutch lever 106 like this, make Clutch Coupling device 104 on the bottom of cylinder 84/move down.

In other words, when clutch lever 106 is rotated by clutch motor 108, Clutch Coupling device 104 by clutch lever along the bottom of cylinder 84 and on/lower slider, make Clutch Coupling device 104 and motor 60 or 102 engagements of coupler stopper.

The operation of washing machine of the present invention will be described below.

Apply power supply and after the CD-ROM drive motor 60 to washing machine, power is sent to power transmission unit 80 via turning cylinder 130 from motor 60, and,, then carry out cleaning, rinsing and drying cycle because power transmission unit 80 drives commutator 56 or interior bucket 58 selectively.

Specifically, implement to clean under the situation with rinse cycle only operating commutator 56, the Clutch Coupling device 104 of power transmission unit 80 is moved up by clutch motor 108 and clutch lever 106, thereby throws off motor 60 and cylinder 84.

In other words, if clutch motor 108 moves clutch lever 106, make Clutch Coupling device 104 move up along the bottom of cylinder 84, then the first clutch gear 104a of Clutch Coupling device 104 throws off from the second clutch gear 166 of motor 60, and clutch mechanism 100 can't be sent to the power from motor 60 Clutch Coupling device 104.

Therefore, power only is sent to planetary gear 83 in the cylinder 84 from motor 60 via turning cylinder 130, and, after its speed is through planetary gear 83 suitable reductions, be sent to thus and clean axle 88, thereby when commutator 56 is cleaned axle 88 rotations, implement to clean or rinsing.

In cleaning or rinse cycle, drainage cell 70 is to the rinse water that the discharge of the washing machine outside is cleaned or rinsing was used, and water supply unit 66 supplies water to washing machine.

In other words, when the feed water valve 66b of water supply unit 66 opening/closing, water supplies to the outer bucket 54 of washing machine via water supply hose 66a, and when draining valve 72 during by drain motor 74 opening/closings of drainage cell 70, rinse water is discharged to the washing machine outside via draining valve 72 and scupper hose 78 from outer bucket 54.

Relative therewith, thus drive commutator 56 at the same time and interior bucket 58 is rotated under the situation of expressed water on the clothing, and Clutch Coupling device 104 is moved down by motor 108 and clutch lever 106, power transmission unit 80 coupling motor 60 and cylinders 84.

In other words, if clutch motor 108 mobile clutch levers 106 like this, make Clutch Coupling device 104 move down along the bottom of cylinder 84, then the first clutch gear 104a of Clutch Coupling device 104 and 166 engagements of second clutch gear make power be sent to Clutch Coupling device 104 from motor 60.

In view of the above, power is sent to planetary gear 83 in the cylinder 84 via turning cylinder 130 from motor 60, and, meanwhile, be sent to cylinder 84 via Clutch Coupling device 104, then cylinder 84 rotates with identical speed with turning cylinder 130.

In this example, because cylinder 84 rotates with identical speed together with turning cylinder 130, the deceleration of the planetary gear 83 in the cylinder 84 is no longer had an effect, and makes cylinder 84 and turning cylinder 130 with high speed rotating.

If power is sent to cylinder 84 and turning cylinder 130 simultaneously from motor 60, then turning cylinder 130 and planetary gear 83 rotate and clean axle 88, and cylinder 84 rotation rotating shafts 86, make that commutator 56 and interior bucket 58 are cleaned axle 88 and rotating shaft 86 rotates.

Meanwhile, if lid 62a is opened by the user in rotation midway, then power transmission unit 80 passes through the rotation of arrestment mechanism 90 brake drums 84, thereby prevents to be taken place by the accident that rotating commutator 56 and interior bucket 58 cause because of neglect of safety.

In other words, in the time of in commutator 56 and interior bucket 58 are in the rotary course of high speed rotating, if lid 62a is opened, then brake lever 94 is braked brake motor 96 pullings of mechanism 90, brake band 92 on the excircle of tension drum 84, thus utilize friction between cylinder 84 and the brake band 92 to stop the rotation of cylinder 84.

Like this, when the rotation of cylinder 84 was subjected to braking, the rotation of rotating shaft 86 and cleaning axle 88 stopped, thereby correspondingly stopped the rotation of interior bucket 58 and commutator 56.

Fig. 9 illustrates the decomposition diagram of motor's for washing machine according to a preferred embodiment of the invention, and Figure 10 illustrates the bottom view of the stator among Fig. 9, and Figure 11 illustrates along the sectional view of the B-B line among Figure 10.

With reference to Fig. 7 and Fig. 9-11, motor's for washing machine according to a preferred embodiment of the invention comprises stator 110, and it is fixed tightly in the bottom side of the housing 82 of power transmission unit 80 regularly; Rotor 120, it is mounted to around the outside of stator 110, and the electromagnetic force that is produced is rotated with respect to stator 110; And turning cylinder 130, its rotation is arranged in the cylinder 84, and the lower end is fixed tightly on the rotor 120 regularly, planetary gear 83 engagements of upper end and power transmission unit 80.

Stator 110 comprises annular core 112, and it has a plurality of steel discs of a pile; Coil 114, it is wound on the core 112 and with AC power supplies and is connected; And the insulator 116 that is positioned at the upper and lower sides of core 112, the one side is extended encirclement coil 114, is used to bring into play insulation function.

Core 112 comprises a plurality of Ts112a, each radially from excircle to outer process, be used for coiling 114 thereon; And a plurality of fastening part 112b, each is used to utilize the fastening bolt (not shown) to be fastened on the housing 82 of power transmission unit 80 from the inner periphery projection.A plurality of Ts112a are clocklike forming thereon along the excircle of core 112 at interval, and coil 114 is arranged between the Ts.

A plurality of fastening part 112b to be clocklike being formed on the inner periphery of core 112 at interval, and each fastening part 112b within it a side of side have fastener hole 112c, be used to utilize fastening bolt fastening.

In a plurality of Ts112a, because a side of coil 114 inserts between two Ts112a, and the other end of coil 114 inserts between two other Ts112a, so a plurality of coil 114 along the circumference coiling of core 112, and is connected in parallel.

Because the upper and lower of a plurality of coils is along circumference utilization binding member 113 bindings of the upper surface and the lower surface of core 112, so reduced the diameter of stator 110 on the whole.

In other words, coil 114 comprises the last coiler part 114a of the top edge that is positioned at core 112; Be positioned at the lower coil part 114b of the lower limb of core 112; And place and be connected connecting coil 114c between a plurality of Ts112a.

In view of the above, because the major part of coil 114 is arranged on the upper and lower surface, and reduces than the projection length of correlation technique Ts112, so the diameter of stator 110 reduces.

Meanwhile, insulator 116 comprises insulator 116a, and it is installed on the upper surface of core 112; With following insulator 116b, it is installed in the bottom side of core 112, and has outward flange, and it extends encirclement lower coil part 114b.

Last insulator 116a between power transmission unit 80 and the core 112 prevents that electric power is sent to power transmission unit 80 from stator 110.

Following insulator 116b has outward flange, its towards the Ts112a of core 112 with to recessed parabola shaped extension, thereby surround lower coil part 114b.

In other words, following insulator 116b is identical with coil 114 diameters on the whole, and semicircular coil receiving element 117 in the outer edge of circumference with parabola shaped to recessed, be used for holding therein lower coil part 114b.In view of the above, following insulator 116b has not only completely cut off the bottom side of stator 110, and has protected lower coil part 114b to avoid the infiltration of external impact and rinse water.

Certainly, be similar to down insulator 116b, also can form insulator 116a, thereby around last coiler part 114a.

Meanwhile, with reference to Figure 12 and 13, be provided with 4 coils 114, its circumference along core 112 is wound on the Ts112a, thereby separates with identical distance, and is connected in parallel, and makes each coil 114 that two electrodes be arranged.

In other words, 4 coils 114 form 8 utmost points, 4 parallel circuits at core 112 places.

In this example, if the gap " G " between stator 110 and the rotor 120 is inhomogeneous, though then the magnetic pull " F " that causes owing to gap heterogeneous " G " acts between stator 110 and the rotor 120, but the parallel circuit number that is wound on the coil 114 on stator 110 and the rotor 120 is many more, and it is many more that this magnetic pull just reduces.

Meanwhile, in the parallel circuit of coil 114, be provided with main parallel circuit with conventional direction rotary rotor 120; The sub-parallel circuit of rotary rotor 120 in the opposite direction, they each have 4 coils 114, thereby form 4 parallel circuits.

Sub-parallel circuit is arranged in the inboard of main parallel circuit, make and between sub-parallel circuit and main parallel circuit, have differing of fixed angle, wherein 4 of main parallel circuit coils along the circumferential direction are wound on the inboard of the Ts112a of core 112, and 4 coils 114 of sub-parallel circuit along the circumferential direction are wound on the outside of the Ts112a of core 112.

Rotor 120 comprises rotor rack 122, and it is mounted to around the external peripheral surface of stator 110 and bottom side surface; Rotor core 124, it is installed on the inner circumferential surface of rotor rack 122, thus the effect that can be subjected to electromagnetic force is rotated with respect to stator 110; With the rotor cover 44 at the lower surface center that is positioned at rotor rack 122, it is used for the lower end of armature spindle 130 is fixed tightly in this.

Have integral body and open the cylindrical rotors frame 122 at top and comprise that the rotor core on the inner circumferential surface that is positioned at sidewall tightens up part 122a, it is used for bearing and tightens up rotor core 124; Tighten up part 122b with the cover that is positioned at the lower surface center, have on the described lower surface and utilize clamp structure 160 rotor cover 126 to be fixed tightly in this fastener hole 160a.

Meanwhile, rotor rack 122 comprises pore and blade, and they prevent that by blow extraneous air to motor 60 motor 60 temperature from raising.In other words, when motor 60 was activated, the internal temperature of motor 60 raise because of its electromagnetic heat loss, therefore needed cooling motor 60, and is bad so that the performance of motor 60 can not become.

Therefore,, be provided with down pore 140 and lower blade 142, be used for the bottom of cooling motor 60, and on the side surface of rotor rack 122, be provided with the side pore, the cooling performance of pore 140 and lower blade 142 under being used to improve at the lower surface of rotor rack 122.

Following pore 140 tightens up between the part 122b at the inside circumferential surface and the cover of rotor rack 122 along the circumferential directions of rotor rack 122.

Each lower blade 142 is used for blowing extraneous air from following pore 140 from a side direction upper process of each following pore 140.

Following pore 140 and lower blade 142 extend along the direction that radially tilts at a certain angle with respect to rotor rack 122.Therefore because down the length situation that both radially extend than it of pore 140 and lower blade 142 is longer, so when rotor rack 122 rotates, through under the air velocity of pore 140 and lower blade 142 also can increase.

Especially, though following pore 140 and lower blade 142 are big more with respect to the angle of inclination of the radial direction of rotor rack 122, air velocity is big more, but, if the angle of inclination is above 30 °, then air velocity can reduce on the contrary, and under the direction of rotation rather than the situation with the inclination of rotor rack 122 rotation directions of incline direction that descends pore 140 and lower blade 142 and rotor rack 122, air velocity can increase.

Therefore, following pore 140 and lower blade 142 form with 30 ° the inclination angle and the rotation direction reversed of rotor rack 122 when rotated, make when rotated, and when motor 60 heatings were maximum, it is maximum that the cooling performance of motor 60 also becomes.

Side pore 144 tightens up between the part 122a with lower surface and the rotor core that clocklike at interval is formed on rotor rack 122 along the sidepiece of rotor rack 122, is used for discharging by pore 140 and lower blade 142 inhaled airs down.

Because the position of side pore 144 is higher than the lower surface of rotor rack 122, so the inlet air flow path between following pore 140 and the side pore 144 is formed on the upside of the lower surface of rotor rack 122.In view of the above, the zone that contacts with the bottom of motor 60 from following pore 140 inhaled airs increases, thereby has improved the cooling performance of motor 60.

Meanwhile, rotor rack 122 has (beads) 146 of muscle portion and recess 148, is used to prevent that it from twisting or being deformed into ellipse because of centrifugal force.

Be provided with a plurality of muscle portion 146, its each upwards, perhaps to recessed, be formed on the lower surface of rotor rack 122, on the circumferencial direction of rotor rack 122, extend along the radial direction of rotor rack 122 with angle intervals clocklike.

The sidepiece of the most close rotor rack 122 of one end of muscle portion 146, and the other end is formed on the same circumference of the first fastener hole 160a in cover tightens up the 122b of portion, it is 126 overlapping to make this other end and rotor overlap.

Recess 148 is formed on the outside in the corner that is formed by the lower surface of rotor rack 122 and side surface edge, along the circumferencial direction of rotor rack 122 with the inside punching press of angle intervals clocklike.

Rotor core 124 comprises the annular core 124a of a plurality of steel discs of a pile; Be positioned at the winding part 124b on the core 124a, it is as faradic passage.Winding part 124b comprises the top ring 150 and the lower loop 151 of the top and bottom that are positioned at core 124a; And be connected guide line (lead line) 152. between top ring 150 and the lower loop 151

The rotor core that rotor core 124 is fixed tightly in rotor rack 122 regularly tightens up on the part 122a, and rotor core tightens up part 122a and has projection of going up 154 and lower convexity 155, is used for keeping at an upper portion thereof and at a lower portion thereof rotor core 124.

Last projection 154 makes when rotor 120 rotates that clocklike along the circumferential direction to be formed on the upside of rotor core 124 at interval rotor core 124 can not separated to the top side of opening of rotor rack 122.Regardless of the size of rotor core 124, last projection 154 is formed on the level altitude that rotor core tightens up part 122a.

Lower convexity 155 makes rotor core 124 shelve and support thereon clocklike along the circumferential direction to be formed on the downside that rotor core tightens up part 122a at interval.The height that lower convexity 155 forms is along with the change in size of rotor core 124.Therefore, because the change in location of lower convexity 155 tightens up on the part 122a so the rotor core 124 of different size can be installed in rotor core selectively.

Last projection 154 and lower convexity 155 form by the excircle of inside stamping rotor frame 122, and it is inwardly outstanding to go up projection 154 and lower convexity 155 like this.

In this example, certainly, can tighten up between the part 122a in rotor core 124 and rotor core and apply binding agent, be used for more firmly rotor core 124 being fastened on rotor core and tighten up part 122a.

Meanwhile, though the bottom of motor 60 is by the following pore 140 of rotor rack 122 and lower blade 142 coolings, but because the air that following pore 140 of quilt and lower blade 142 blow can not arrive the top of motor 60, but discharge from side pore 144, so the top of motor 60 seldom is subjected to down the cooling of pore 140 and lower blade 142.

Therefore, a plurality of blades 158 (blades) project upwards from the top of rotor core 124, are used for blowing external air to when motor 60 is activated the top of motor 60.

Blade 158 is injection-molded and forms one with the top ring 150 that is positioned on rotor core 124 end faces, with clocklike at interval along the top of rotor core 124 in the extension in the radial direction of rotor rack 122.

Meanwhile, the internal diameter of rotor core 124 makes the gap " G " of fixed dimension be formed between rotor core 124 and the stator 110 greater than the external diameter of stator 110.

Though the efficient of motor 60 is littler and become bigger along with gap " G " forms ground, if rotor 120 collides stator 110 easily but the size of gap " G " is too little, so the design of motor, manufacturing and maintenance are necessary, so that between rotor core 124 and stator 110, always keep the gap " G " of optimization.

Therefore, rotor rack 122 has gap verification holes 156 on lower surface, is used for observing and measurement clearance " G ".On the lower surface of rotor rack 122, along the gap " G " between stator 110 and the rotor core 124, clocklike to be arranged at intervals with a plurality of gap verification holes 156.

Rotor cover 126 comprises the 126a of cover portion, and it is used to tighten up the lower end of turning cylinder 130; With around the 126b of the portion that tightens up of the 126a of cover portion, its cover that is used to tighten up rotor rack 122 tightens up the 122b of portion.

The 126a of cover portion is formed by metal, is used for placing therein and tightening up an end of turning cylinder 130.

Tighten up the 126b of portion and adopt the moulding one-tenth of injection molding, be used for electric insulation between 126a of cover portion and rotor rack 122, and be provided with and overlap the corresponding second fastener hole 160a of the first fastener hole 160a that tightens up the 122b of portion, it is used to utilize securing member 160 to be fastened on cover to tighten up part 122b.

Along the circumferential direction utilize bolt 162 and rivet 164 along the circumferential direction by alternately fastening corresponding to being respectively formed at a plurality of first fastener hole 160a and a plurality of second fastener hole 160b that cover tightens up on the 122b of portion and the rotor cover 126 each other.

Tighten up the 126b of portion and have second clutch gear 166 at upper surface, it is used for the first clutch gear 104a engagement with Clutch Coupling device 104.

The operation of motor's for washing machine of the present invention below will be described.

After applying AC power supplies to motor 60, electric current flows through the coil 114 on the stator 110, is forming induced-current on formation rotary magnetic field and the rotor core 124 at rotor 120 on the stator 110.

Because rotary magnetic field on stator 110 and the rotor core 124 and the interaction between the induced-current, so the power of rotating is come rotary rotor 120, and the rotatory force of rotor 120 is sent to power transmission unit 80 via turning cylinder 130.

In this example, though rotor core 124 along last/following direction move and because of the revolving force of the rotation of following rotor 120 towards rotor rack 122 open top portion from, but because last protruding 154 and lower convexity 155 top and bottom that keep rotor core 124, so on having prevented/move down and the separation of rotor core 124.

Meanwhile, because last insulator 116a is installed on the upper surface of stator 110, so stoped the electric current between stator 110 and the power transmission unit 80, and because following insulator 116b is installed in the downside of stator 110, stator 110 utilizes the coil receiving element 117 covering lower coil part 114b of insulator 116b down, so can not be exposed to the outside.

Therefore, because under the state that power transmission unit 80 is installed, stator 110 can not be exposed to the outside, so can prevent because the accident that neglect of safety causes, such as electric shock, and owing to do not have ectocine to be applied directly on the coil 114, so can prevent damage for coil 114.

Meanwhile, when rotor 120 is rotated the interaction between magnetic field and the induced-current and rotates, outside air is sucked by the following pore 140 of rotor rack 122 and lower blade 142, blow to the bottom of stator 110 and rotor core 124, thereby the bottom of cooling motor 60, and be discharged to the outside of motor 60 via side pore 144.

In the rotary course of washing machine, because down pore 140 and lower blade 142 are formed slopely with 30 ° the scope rotation direction with respect to rotor, so when rotor rack 122 when direction of rotation is rotated, the flowing velocity maximum of following pore 140 and lower blade 142, so when rotated, it is maximum that the cooling performance of motor 60 becomes, and the heating of motor 60 simultaneously also becomes maximum.

Because side pore 144 location are higher than the lower surface of rotor rack 122, compared with prior art, inlet air flow path between following pore 140 and the side pore 144 upwards moves towards stator 110 and rotor core 124, thereby has increased the contact area between motor 60 and the outside air.

In addition, owing to the blade 158 of extraneous air by the top curved part 122c place that is positioned at rotor rack 124 is inhaled into when following rotor 120 rotations, thus be blown to the top of stator 110 and rotor core 124, and the top of cooling motor 60.

Like this, because extraneous air blows to the upper and lower of motor 60 simultaneously, and meanwhile, the lower area of the motor 60 that is cooled off by outside air also increases, so the cooling performance of motor 60 improves, thereby improved the efficient of motor 60, this is bottom quilt pore 140 and lower blade 142 coolings down because of motor 60, and the top of motor 60 is cooled off by blade 158.

Meanwhile, from the high centrifugal force of the rotation of rotor 120 with rotor rack 122 distortions or be deformed into ellipse.

In this example, a plurality of muscle portions 146 and recess 148 have been strengthened rotor rack 122, even also can suppress its distortion when the thickness of rotor rack 122 is thinner.

Even be applied to the major part of the power on the rotor rack 122 act on the cover tighten up on the part 122b, its for stepped and its in be provided with a plurality of fastener hole 160a, 160b and turning cylinder 130, tighten up the muscle portion 146 of the residing position of the first fastener hole 160a of part 122b extending from the sidepiece of rotor rack 122 to cover and prevent because stress concentrates the rotor rack 122 that causes to tighten up the distortion of part 122b at cover.

Meanwhile, if the size in the gap " G " between stator 110 and the rotor 120 is along with change in location, stator 110 and the magnetic pull between the rotor core 124 from the non-homogeneous gap between stator 110 and the rotor core 124 can cause rotor 120 and stator 110 to collide each other so.

Therefore, producer or attendant keep by a plurality of gap verification holes 156 in the rotor rack 122 or the gap " G " of governor motor 60 remains unchanged it.In other words,, check the size in gap " G " by from each gap verification holes 156 verification gap " G ", thus the defective of detector gap " G ", and adjusting gap " G " becomes easier.

Yet, both made assembled and through overregulating the gap " G " that makes between stator 110 and the rotor 120 uniformly under the situation at stator 110 and rotor 120, the uniformity in the gap " G " between stator 110 and the rotor 120 also can be along with the driving of motor 60 be destroyed, thereby causes the magnetic pull " F " that causes because of gap heterogeneous between stator 110 and the rotor 120.

With reference to Figure 14, magnetic pull that causes because of gap heterogeneous and clearance surface long-pending " S ", non-homogeneous amount " △ " and gap magnetic density " B " are proportional, and are inversely proportional to the number of gap length " L " and parallel circuit " P ", shown in the following equation.

$F_{\mathrm{PULL}}=\frac{1}{25}\×{\left(\frac{B}{1000}\right)}^2\×\frac{\mathrm{\Δ}}{\mathrm{\δ}}\left[\mathrm{kg}\right]$

Wherein, S: interval area [SQ.CM]=π D _sL _Eff/ C,

B: the virtual value of gap magnetic density [GAUSS]

$B=\frac{{\mathrm{<figure-callout\; id="2"\; label="B\; peak"\; filenames="A20058001498400321.png"\; state="\{\{state\}\}">B</figure-callout>}}_{\mathrm{peak}}}{\sqrt{2}}\&times;1.11$

δ: gap length [CM],

D _s: diameter of stator bore [CM],

L _Eff: non-homogeneous amount [CM],

C: Carter's coefficient (about 1.2),

P _AR: the equivalent number of parallel circuit.

Therefore, if the coil 114 of stator 110 forms 8 utmost points, 4 parallel circuits in core 112 coilings, the parallel circuit number " P " of coil 114 increases so, thereby also can reduce magnetic pull " F ".

In other words, because 4 coil 114 coilings are in parallel, the magnetic pull that acts between stator 110 and the rotor 120 is reduced to 1/4 than correlation technique, and along with reducing of the amplitude of magnetic pull " F ", the reducing to produce with the vibration of rotor 120 of driving torque is reduced, and the possibility that stator 110 and rotor 120 interfere also reduces.

Coil 114 comprises main parallel circuit and sub-parallel circuit, and wherein, if AC power supplies is applied on the main parallel circuit, rotor 120 rotates along fixed-direction, and if AC power supplies be applied on the sub-parallel circuit, rotor 120 rotates in opposite direction.

Claims (20)

1. motor's for washing machine comprises:

Stator, it comprises:

Be essentially the core of annular, it has a pile steel disc,

Be wound on the coil on the described core, apply on it AC power supplies and

Be installed in the insulator on the described core outer surface, an edge of described insulator extends the described coil of covering.

2. motor as claimed in claim 1 is characterized in that, described insulator comprises:

Be installed in described core upper surface last insulator and

Be installed in the following insulator on the bottom side of described core, its outward flange extends, and the outer edge in the bottom side of described core covers coiler part.

3. motor as claimed in claim 2 is characterized in that, the described outward flange of insulator down extends to the outward flange of described core, and forms the bottom side around described coil, and it is arranged in the bottom side of described core.

4. motor as claimed in claim 3 is characterized in that, the described outward flange of insulator down has to recessed parabolic shape.

5. motor's for washing machine comprises:

Stator, it comprises:

Be essentially the core of annular, it has a pile steel disc,

Be wound on the coil on the described core, apply on it AC power supplies and

Be installed in the insulator on the described core outer surface, an edge of described insulator extends the described coil of covering,

It is characterized in that a plurality of coils are along the circumference coiling of described core, and be connected in parallel.

6. motor as claimed in claim 5 is characterized in that, described insulator comprises:

Be installed in described core upper surface last insulator and

Be installed in the following insulator on the bottom side of described core, its outward flange extends, and the outer edge in the bottom side of described core covers coiler part.

7. motor as claimed in claim 6 is characterized in that, the described outward flange of insulator down extends to the outward flange of described core, and forms the bottom side around described coil, and it is arranged in the bottom side of described core.

8. motor as claimed in claim 7 is characterized in that, four coil windings and are connected in parallel on described core, thereby form 4 parallel circuits.

9. motor as claimed in claim 8, it is characterized in that, described coil-winding forms the main parallel circuit that rotates described rotor with fixed-direction, and the sub-parallel circuit that rotates described rotor in the opposite direction, and described sub-parallel circuit is arranged to exist the phase difference of fixed angle between described sub-parallel circuit and described main parallel circuit.

10. motor's for washing machine comprises:

Stator is applied with AC power supplies on it;

Be positioned at described stator outside rotor, it is mounted to by the interaction of electromagnetic force and can rotates with respect to described stator;

It is characterized in that described stator comprises:

Be fixed tightly in the annular core of outer bucket regularly, its have a plurality of steel discs of a pile and

Along a plurality of coils of the circumferencial direction coiling of described core, and be connected in parallel.

11. motor as claimed in claim 10 is characterized in that, four coil windings and are connected in parallel on described core, form 4 parallel circuits.

12. motor as claimed in claim 11, it is characterized in that, described coil-winding forms the main parallel circuit that rotates described rotor with fixed-direction, and the sub-parallel circuit that rotates described rotor in the opposite direction, and described sub-parallel circuit is arranged to exist the phase difference of fixed angle between described sub-parallel circuit and described main parallel circuit.

13. a motor's for washing machine comprises:

Stator is applied with AC power supplies on it;

Be arranged to surround the bottom side and the outside rotor frame of described stator;

Be positioned at the rotor core on the inner circumferential surface of described rotor rack, it is mounted to and can be rotated with respect to described stator by the interaction of electromagnetic force; With

Be positioned at the rotor core fixture on the described rotor rack,

Wherein, described stator comprises the core that is essentially annular, and it has a pile steel disc; Be wound on the coil of described core, be applied with AC power supplies on it; And be installed in insulator on the outer surface of described core, thus an edge of described insulator extends and covers described coil,

Wherein, a plurality of described coils are connected in parallel along the circumference coiling of described core.

14. motor as claimed in claim 13 is characterized in that, described rotor rack has a plurality of pores that form with radial pattern, with respect to the certain angle of the inclined of described rotor rack.

15. motor as claimed in claim 13 is characterized in that, described rotor core device for fastening comprises:

Rotor core tightens up part, be used for described rotor core be placed in described rotor rack inner surface and

Tighten up the lower convexity of the bottom of part from described rotor core, be used to support the lower end of described rotor core to inner process.

16. motor as claimed in claim 13 also comprises the recess of the corner that is positioned at the lower surface that connects described rotor rack and side surface, it is used to strengthen intensity.

17. motor as claimed in claim 13 also comprises the muscle portion in the lower surface that is formed on described rotor rack, its radial direction along described rotor rack is extended, and forms radial pattern.

18. motor as claimed in claim 13 also comprises a plurality of gap verification holes of the lower surface that is arranged in described rotor rack.

19. motor as claimed in claim 13 also comprises with radial pattern being formed on a plurality of pores in the lower surface of described rotor rack, when described washing machine rotation, described a plurality of pores tilt with the rotation direction of certain angle with respect to described rotor rack.

20. motor as claimed in claim 13, also comprise with clocklike at interval from the top of described rotor core along this top to a plurality of blades of upper process.

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