CN101404426B - Permanent magnet type rotating electric machine for driving fan of washing and drying machine - Google Patents
Permanent magnet type rotating electric machine for driving fan of washing and drying machine Download PDFInfo
- Publication number
- CN101404426B CN101404426B CN2008101663872A CN200810166387A CN101404426B CN 101404426 B CN101404426 B CN 101404426B CN 2008101663872 A CN2008101663872 A CN 2008101663872A CN 200810166387 A CN200810166387 A CN 200810166387A CN 101404426 B CN101404426 B CN 101404426B
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- stator
- rotating electric
- electric machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention relates to fan-driven permanent magnet rotary motor of a washing dryer, which uses a low speed corresponding to a high-speed rotation, in particular, can inhibit the temperature rise during light-load. A stator which has performing armature winding is formed in a plurality of slots on the stator core, a rotor of the permanent magnet which is housed in a plurality of permanent magnetinsertion holes on the rotor core can be freely supported in the internal circumstance of the stator through prescribed clearance rotation, a tangent plane is formed on the external circumstance between the permanent magnets of the rotor core. When the jaw opening of the rotor magnetic pole located at the upper side of the permanent magnet is set as theta1, the jaw opening of the tooth width is set as theta2, and the slot space of the slot is set as theta3, the constitution satisfies the condition of theta1<= theta2<=theta3, and the ratio of theta2/theta3 is more than 55 percent; when the jawopening of the magnetic pole piece located in the teeth internal circumstance side and extending along the circumference direction is set as theta 4, the ratio of theta2/theta4 is more than 64%.
Description
Technical field
The present invention relates to adopt the permanent magnet type rotating electric machine of the concentrated winding stator that the fans drive that is used for scrubbing-and-drying unit uses.
Background technology
The motor with permanent magnet that the fans drive of scrubbing-and-drying unit adopts converter to drive with electric rotating machine.In recent years, scrubbing-and-drying unit is as main flow, and is energy-conservation for realizing, is necessary to make the air quantity of fan to increase and the drying time of shortening washings.For the air quantity that increases fan is necessary to make the motor with permanent magnet high speed.As the conventional example of this electric rotating machine, as TOHKEMY 2005-94959 communique is put down in writing, the known structure that bipolar permanent magnet is housed in having in rotor.
But, in the structure that TOHKEMY 2005-94959 communique is put down in writing, the problem that the temperature when not disclosing relevant underload rises.Promptly, the fan of scrubbing-and-drying unit is wider to operating range at a high speed from low speed, the problem that the temperature anomaly when especially having underload increases.
Summary of the invention
The purpose of this invention is to provide the fans drive permanent magnet type rotating electric machine that corresponds to the scrubbing-and-drying unit that the temperature of high speed rotating especially can suppress underload the time rise from low speed.
(1) in order to solve above-mentioned purpose, the fans drive of scrubbing-and-drying unit of the present invention with the feature of permanent magnet type rotating electric machine is, in being formed at a plurality of grooves of stator core, has the stator of having implemented armature winding, be supported on freely on the interior week of stator by the predetermined gap rotation at the insert in the hole rotor that accommodates permanent magnet of a plurality of permanent magnets that are formed at rotor core, on the outer peripheral face between the permanent magnet of rotor core, form tangent plane, aperture at the rotor magnetic pole that will be positioned at permanent magnet top is made as θ 1, the aperture of the facewidth is made as θ 2, when the separation of groove is made as θ 3, constitute the condition that satisfies θ 2 ≦ θ 1 ≦ θ 3, and making the ratio of (θ 2/ θ 3) is more than 55%, when the aperture of the pole piece that will be positioned at all sides of tooth and prolong at circumferencial direction was made as θ 4, making the ratio of (θ 2/ θ 4) was more than 64%.
(2) in the fans drive of the scrubbing-and-drying unit of above-mentioned (1) record with in the permanent magnet type rotating electric machine, it is characterized in that the axial length of permanent magnet is shorter than the axial length of rotor core.
According to the solution of the present invention, aperture at the rotor magnetic pole that will be positioned at permanent magnet top is made as θ 1, the aperture of the facewidth is made as θ 2, when the separation of groove is made as θ 3, constitute the condition that satisfies θ 2 ≦ θ 1 ≦ θ 3, and making the ratio of (θ 2/ θ 3) is more than 55%, when the aperture of the pole piece that will be positioned at all sides of tooth and prolong at circumferencial direction is made as θ 4, making the ratio of (θ 2/ θ 4) is more than 64%, because the leakage flux of coil increases, it is big that inductance becomes, so, can provide the fans drive permanent magnet type rotating electric machine of the scrubbing-and-drying unit of the temperature rising in the time of can suppressing underload from must reducing by shape electric current (ヒ ゲ Electricity stream) that converter is supplied with.
Description of drawings
Fig. 1 is the radial cross-section with permanent magnet type rotating electric machine of concentrated winding stator of the present invention.
Fig. 2 is the enlarged drawing of stator of the permanent magnet type rotating electric machine of Fig. 1.
Fig. 3 is the enlarged drawing of rotor of the permanent magnet type rotating electric machine of Fig. 1.
Fig. 4 is the stereogram of rotor of the permanent magnet type rotating electric machine of Fig. 1.
Fig. 5 is the motor current waveform of the permanent magnet type rotating electric machine of Fig. 1 when having carried out low-speed running.
Fig. 6 is the permanent magnet type rotating electric machine of Fig. 1 temperature rising curve when having carried out running.
Fig. 7 is an ideograph of having represented to carry the scrubbing-and-drying unit of the permanent magnet type rotating electric machine with concentrated winding stator of the present invention with longitudinal profile.
Fig. 8 is the cutaway view of rotor of the permanent magnet type rotating electric machine of second execution mode of the present invention.
Among the figure:
The 1-permanent magnet type rotating electric machine, 2-stator, 3-rotor, the 4-tooth, 5-rear of core (core back), 6-stator core, the 7-groove, 8-armature winding, the circular-arc part of 9-, 10-chamfering (ベ ベ リ Application グ), 11-pole piece, 12-rotor core, 13-permanent magnet patchhole, 14-permanent magnet, 15-axis hole, the 16-recess, 17-rotor magnetic pole, 18-channel opening portion, the 20-housing, 21-washing and dewatering bucket, 22-fluid balancer, the 23-agitator, the outer bucket of 24-, 25-drive unit, the 26-mounting base, 27-anti-vibration support, 28-washings, the 29-brushless DC motor, 30-electric operating clutch, 31-planetary gear reducing mechanism, the 32-drain solenoid valve, 33-drainage pipe, 34-air hose, the 35-level sensor, 36-supporting leg, 37-pedestal, 38-outside clothes inlet, the 39-top cover, 40-header board, plate behind the 41-, 42, the 46-hinge, the 43-enclosing cover, the outer bucket of 44-loam cake, the inboard clothes inlet of 45-, the 47-inner cap, 48-header board case, 49-mains switch, 50-operation panel, the uneven detecting sensor of 51-, 52-covers switch, plate case behind the 53-, 54-controller, 55-tap connector, 56-detergent dissolution container, 57-water filling port, 58-master's water supply electromagnetic valve, 59,60-auxiliary water supply electromagnetically operated valve, the 61-suction outlet, 62-water-cooled dehumidifying pipeline, 63-cooling water water spray portion, 64-canyon wind road pipeline, the 65-circulating fan, 66-updraught road pipeline, 67-heater, 68-is blown into mouth, 69-the end of a thread is repaired unit, 70-humidity sensor, 71-temperature sensor, 72-second temperature sensor, 73-cooling water water spray electromagnetically operated valve, 74-bellows, 75-dorsal part lid.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
The 1st embodiment
Below, the expression embodiment of the invention.
Fig. 1 is the expression embodiment who radially sprays cutaway view with permanent magnet type rotating electric machine of concentrated winding stator of the present invention.
Fig. 2 is the enlarged drawing of stator of the permanent magnet type rotating electric machine of Fig. 1.
Fig. 3 is the enlarged drawing of rotor of the permanent magnet type rotating electric machine of Fig. 1.
Fig. 4 is the stereogram of rotor of the permanent magnet type rotating electric machine of Fig. 1.
Describe with reference to Fig. 1～Fig. 4 simultaneously.In each figure, the parts that general symbolic representation is identical.In addition, here, expression be the permanent magnet type rotating electric machine of 6 utmost points, 9 grooves.In addition, Fig. 1 (a) and Fig. 1 (c) are the rotors shown in the load map 3 (a), and Fig. 1 (b) is the permanent magnet type rotating electric machine of the rotor shown in the load map 3 (b).
Permanent magnet type rotating electric machine 1 with concentrated winding stator is made of stator 2 and rotor 3.Stator 2 comprises: the stator core 6 that is made of tooth 4 and rear of core 5; Armature winding 8 (U phase winding 8a, V phase winding 8b, W phase winding 8c by three phase windings constitute) with the concentrated winding of the mode package of encirclement tooth 4 in the groove between tooth 47 constitutes.Here, permanent magnet type rotating electric machine 1 is 6 utmost points, 9 grooves, and separation is 40 degree with mechanical angle, is 120 degree with electric angle.On the inner peripheral surface relative of tooth 4, as shown in Figure 2, has the pole piece 11 that is positioned at tooth 4 all sides and prolongs that has applied circular-arc part 9 and chamfering 10 at circumferencial direction with rotor 3.
Here, the aperture of the point that intersects above of the side of tooth 4 and pole piece 11 is made as the aperture θ 2 of the facewidth, the separation of groove 7 is made as θ 3, the aperture of the circumferencial direction end face of pole piece is made as θ 4.
Accommodate permanent magnet 14 in the permanent magnet patchhole 13 of the word shape of rotor 3 on being formed at rotor core 12, by being used for axis hole 15 formations chimeric with axle (not shown).The axle that will prolong on the pole center direction of rotor 3 here, is referred to as the d axle.Will and the axle that prolongs on the direction between with 90 ° of magnetic poles of being separated by of electric angle of pole center direction be referred to as the q axle.The recess 16 of the shape by having made up two roughly V fonts that are cut into linearity interpolar (q axle) the side setting of the outer peripheral face of rotor core 12 plays the magnetic flux of permanent magnet 14 rotor magnetic pole 17 to the converging action of magnetic pole side thereby form.This rotor magnetic pole 17 is made two kinds of rotor II that the electromagnetic steel plate of rotor I that electromagnetic steel plate with stacked many magnetic pole aperture θ 11 shown in Fig. 3 (a) forms and stacked many magnetic pole aperture θs 12 narrower than magnetic pole aperture θ 11 shown in Fig. 3 (b) forms.The aperture of the rotor magnetic pole of rotor I and rotor II is generically and collectively referred to as θ 1.The structure that disposes rotor II in the mode that is clipped each other by this rotor I is the rotor 3 shown in 4.And rotor magnetic pole 17 constitutes relative pole center symmetry.
In the present invention, on the outer peripheral face between the permanent magnet of rotor core, form tangent plane, aperture at the rotor magnetic pole that will be positioned at permanent magnet top is made as θ 1, the aperture of the facewidth is made as θ 2, when the separation of groove is made as θ 3, constitute satisfy condition [θ 2 ≦ θ 1 ≦ θ 3], and to make the ratio of (θ 2/ θ 3) be more than 55%, when the aperture that makes pole piece was θ 4, making the ratio of (θ 2/ θ 4) was more than 64%.
Fig. 5 is that the permanent magnet type rotating electric machine of Fig. 1 carries out the underload motor current waveform in when running.In Fig. 5, the ratio of expression (θ 2/ θ 3) that put down in writing with TOHKEMY 2005-94959 communique is 41.7% motor current waveform when above contrastively.According to Fig. 5, with regard to existing motor, in order to approach non-loaded underload running, then must shape electric current (ヒ ゲ Electricity stream) big (maximum is 1.67A), relative therewith, with regard to motor of the present invention, as can be known must the shape electric current diminish (maximum is 0.35A).
Its reason is, inverter power supply (not shown) is main power source with AC100V, pass through voltage doubling rectifing circuit, the charging voltage of capacitor is 282.8V to the maximum, by PWM modulation this dc voltage is dwindled into the voltage that applies to motor, because of this relation, become underload during low-speed running as fan load, the electric current that is used to take place torque is little, but in order to improve dc voltage, and is must the shape electrorheological big.
This palpus shape electric current becomes asynchronous magnetic field by stator and rotor, thereby stator core and rotor core generation iron loss, becomes the reason that temperature rises.
Fig. 6 is the permanent magnet type rotating electric machine of Fig. 1 temperature rising curve when having carried out running.Fig. 6 (b) is that the ratio of existing TOHKEMY 2005-94959 communique (θ 2/ θ 3) that put down in writing is when being 41.7% o'clock underload running and the temperature rising result of the test of the armature winding during specified running.The ascendant trend that can infer from figure when underload, temperature rises during nominal load is all fast, and iron loss is very big.The result who raises on the temperature when turning round than nominal load when in addition, becoming common unimaginable underload running.Relative therewith, Fig. 6 (a) be constitute aperture at the rotor magnetic pole that will be positioned at permanent magnet of the present invention top be made as θ 1, with the aperture of the facewidth be made as θ 2, when the separation of groove is made as θ 3, [θ 2 ≦ θ 1 ≦ θ 3] satisfies condition, and making the ratio of (θ 2/ θ 3) is more than 55%, when the aperture that makes pole piece is θ 4, with the ratio of (θ 2/ θ 4) be set at more than 64%, during the underload running and the temperature rising result of the test of the armature winding during the nominal load running.The ascendant trend that temperature rises in the time of can inferring underload when running, specified running according to this figure is all slow, and iron loss is little.When in addition, becoming specified running and the roughly the same result of temperature rising degree during the underload running.
The reason that this iron loss diminishes is, by aperture θ 1, θ 2, θ 3, θ 4 being set at [θ 2 ≦ θ 1 ≦ θ 3], the ratio of (θ 2/ θ 3) is set at more than 55%, the ratio of (θ 2/ θ 4) is set at more than 64%, thereby groove narrows down in Breadth Extreme, and uprise, thereby slot leakage flux becomes big, it is big that the groove leakage inductance of armature winding becomes, and the rising of the electric current of supplying with from converter is slack-off, must diminish by the shape electric current.
Fig. 7 is an ideograph of having represented to carry the scrubbing-and-drying unit of the permanent magnet type rotating electric machine with concentrated winding stator of the present invention with the vertical section.In Fig. 7, the 20th, the housing of the quadrangular barrel shape of formation outline.Housing 20 usefulness Chrome-free pre-coated steel plates (Network ロ system Off リ-プ レ コ-ト Steel plate) are made.
The 21st, the washing and dewatering bucket has the aperture 21a that is used for water flowing and ventilation on its perisporium, and edge portion possesses fluid balancer 22 thereon, rotates in the inboard of bottom agitator 23 is set freely.The 24th, in the washing and dewatering bucket is housed and stockpiles washings and the outer bucket of washings, drive unit 25 is installed by the mounting base 26 of steel plate system in the outside of bottom,, and then support in the mode of dangling at 4 anti-vibration supports 27 in four bights of the upper end of housing 21 bucket 24 outside four jiaos are sling equably by fastening at the central part of housing 21.
Agitator 23 is for covering the most big footpath, bottom (outside dimension is more than 90% of internal diameter size of washing and dewatering bucket) of washing and dewatering bucket 21.The detailed structure of agitator 23 illustrates, but central portion and peripheral edge portion height, intermediate portion form than the lowland.Peripheral edge portion is bent upwards in the mode of lifting more to periphery more, bears washings 28 and is rotated.
Brushless DC motor 29 and electric operating clutch 30 and planetary gear reducing mechanism 31 are housed in the drive unit 25, have as making agitator 23 rotations (stir mode) under the static state of washing and dewatering bucket 21 making, make the rotation (washing mode) round about respectively of washing and dewatering bucket 21 and agitator 23, make the such driving function selectively of washing and dewatering bucket 21 and agitator 23 one rotation (dehydration, drying mode).
The discharge outlet 24b that is formed at outer barrel bottom is connected with drainage pipe 33 by drain solenoid valve 32.Choke box 24c is connected with level sensor 35 by air hose 34.Lower limb at housing 20 is installed in four jiaos of pedestals 37 with forming synthetic resin that supporting leg 36 has been installed.
The top cover 39 of clothes inlet 38 is embedded in the opening leading edge in the mode of the upper opening of covering housing 20 outside having formed, and installs with header board 40 and back plate 41, is installed on the housing 20 by screw.
Outside clothes inlet 38 detailed structure that are formed at top cover 39 illustrate, but open and close covering freely by enclosing cover 43, the mode that this enclosing cover 43 is opened with two foldings (being converted into herringbone) is installed on the top cover 39 by hinge 42, the inboard clothes inlet 45 that is formed at the outer bucket loam cake 44 that is installed in outer bucket 24 upper ends constitutes by inner cap 47 and opens and closes the ground covering freely, and this inner cap 47 is installed on the outer bucket loam cake 44 by hinge 46.
Mains switch 49 and operation panel 50, uneven detecting sensor 51, lid switch 52 are housed being formed at conduct front portion between top cover 39 and the header board 40 in accommodating in the header board case 48 of portion.Uneven detecting sensor 51 is to detect when making laundry hold concurrently dehydration barrel 21 rotations laundry dehydration barrel 21 (the outer bucket 24) transducer that the imbalance of the washings 28 in the dehydration barrel 21 vibrates more than setting significantly of holding concurrently because of doing washing of holding concurrently.Lid switch 52 detects the switching of enclosing cover 43.
Operation panel 50 is provided with the setting button of decision washing procedure, drying program, washing drying program etc.
In being formed at top board 39 and the back back plate case 53 between the plate 41, laterally washings feed unit described later is housed in side by side and the high concentration cleaning solution generates, feed unit, and in level sensor 35 and the controller 54 that the water level signal corresponding with the interior water level of outer bucket 24 takes place is housed.
The washings feed unit is connected water inlet side with tap connector 55, by via detergent dissolution container 56 the main water supply electromagnetic valve 58 that water outlet side is connected with water filling port 57 being constituted.
The high concentration cleaning solution generates, feed unit constitutes, and supplies with washing dissolving water via 59 pairs of detergent dissolution containers of auxiliary water supply electromagnetically operated valve 59, generates the high concentration cleaning solution when stirring the powder synthetic detergent of putting in this detergent dissolution container 56.Overflow from detergent dissolution container 56 when diluting and supply to the water filling port 57 by further water supply.In detergent dissolution container 56, set up softener and drop into the chamber, and constitute, by supplying water, thereby the softeners of putting in the detergent dissolution container 56 are overflowed from the softener chamber and supply to water filling port 57 from auxiliary water supply electromagnetically operated valve 60.
Warm braw cyclic drying unit possesses: as the water-cooled dehumidifying pipeline 62 of dehumidifying air channel portion, its interception suction outlet 61 on bucket 24 lower sides from being formed at outside extends upward with plumbness and the washings from suction outlet 61 intrusions that form along outer bucket 24 rear side outside wall surface; As the cooling water water spray portion 63 of water-cooled Dehumidifying element, it is positioned at the top of this water-cooled dehumidifying pipeline 62 and pipeline is supplied with cooling water; As the canyon wind road pipeline 64 of decline air channel portion, its turn back than the also high position of water level of the outer bucket in the washing procedure 24 and along the outside wall surface of outer bucket 24 outwards the downside of bucket 24 vertically extend; Circulating fan 65, it is configured in the lower side space of outer bucket 24 and from canyon wind road pipeline 64 air is drawn into suction inlet and generates circulating air; As the updraught road pipeline 66 of rising air channel portion, its from the blow-off outlet of this rotary fan 65 outside wall surface along outer bucket 24 up direction extend with plumbness; And suction inlet 68, its be arranged on the outer bucket loam cake 44 on the upper end that is contained in outer bucket 24 and in the heater as heating unit (ptc heater) 67 that the circulating air of sending into from updraught road pipeline 66 is heated is housed, and the circulating air that will heat is blown in washing and dewatering bucket 21.
Possessing the end of a thread capture unit 69 from the fold back portion of water-cooled dehumidifying pipeline 62 to decline wind channel tube road 64.In addition, the bottom is provided with humidity sensor 70 and temperature sensor 71 in canyon wind road pipeline 64, in the air channel, downstream of the heater 67 of suction inlet 68 second temperature sensor 72 is set.Water supply to cooling water water spray portion 63 is undertaken by cooling water water spray electromagnetically operated valve 73, and the two connects with bellows 74.
Water-cooled dehumidifying pipeline 62, canyon wind road pipeline 64 and the updraught road pipeline 66 that constitutes circulation air path outside on the outside wall surface of the rear side of bucket 24 outside the circumferencial direction of bucket 24 be arranged side by side its part and outer bucket 24 integrally formed and install, the dorsal part lid 75 that covers their outside constitutes the shape that bloats laterally, and fastening with screw.
Washings outside incite somebody to action after washing this warm braw cyclic drying unit in the bucket 24 are discharged, make washing and dewatering bucket 21 high speed rotating, when making its high speed rotating after the dehydration, when perhaps making its low speed rotation, operation cycle fan 65 when making the positive and negative reverse of agitator 23 in addition, thereby the wet air outside suction outlet 61 sucking-offs in the double dry bucket 21 of bucket 24 and washing, make in the process that rises in the water-cooled dehumidifying pipeline 62, carry out cooling and dehumidifying by the cooling water that supplies to from cooling water water spray portion 63 in the water-cooled dehumidifying pipeline 62.Thereafter, when being descended, air after the dehumidifying sucks circulating fan 65 in canyon wind road pipeline 64, send into suction inlet 68 from this circulating fan 65 by updraught road pipeline 66 and heater 67, be blown into by heater 67 heating and the central portion in dry bucket 21 is held concurrently in washing.Be blown into washing hold concurrently circulating airs contact washing in the dry bucket 21 hold concurrently washings 28 and dry washing material in the dry bucket 21 like this.This circulating fan 65 adopts fully opened type owing to be the machine of handling water in order to prevent moisture from entering, thereby requires tighter to specific temperature rise.
Consideration is applied to permanent magnet type rotating electric machine 1 of the present invention the situation of the circulating fan 65 of above-mentioned scrubbing-and-drying unit.Circulating fan 65 is square loads, and operating range is wider to specified running from the running beginning.For example, existing situation will be with the 1/2 load operation occasion that descends of rotary speed then, and is must the shape electric current also big even load current himself diminishes, because the relation that the temperature of armature winding rises can't be finished long running.Otherwise, during specified running, also because the relation that the temperature of armature winding rises can't be finished long running.
Relative therewith, used the occasion of permanent magnet type rotating electric machine of the present invention, will be with 1/2 load operation with will be with specified running the time, because it is low that the temperature of armature winding rises, so can turn round with arbitrary load, can realize running continuously for a long time, thereby the drying time of accelerating washings 28, can make contributions to energy-conservation.
Have again, in the present invention, to the aperture θ 2 of the facewidth and the aperture θ 4 of pole piece, numerical definiteness is (θ 2/ θ 4)〉64%, but limit under the low structure during the specified running of temperature-rise ratio of the armature winding of this limit value when underload turns round, θ 2=θ 4 100% in, the fastening portion of armature winding disappears, higher limit is by the fixing means and the method for supporting decision of armature winding.
In addition, in the present invention, aperture θ 2 and separation θ 3 to the facewidth, numerical definiteness is (θ 2/ θ 3)〉55%, but limit under the low structure during the specified running of temperature-rise ratio of the armature winding of this limit value when underload turns round, θ 2=θ 3 100% in, the peristome of groove 18 disappears, decision as required in cutting apart manufacture method unshakable in one's determination.
According to above structure, on the outer peripheral face between the permanent magnet of rotor core, form tangent plane, aperture at the rotor magnetic pole that will be positioned at permanent magnet top is made as θ 1, the aperture of the facewidth is made as θ 2, when the separation of groove is made as θ 3, constitute satisfy condition [θ 2 ≦ θ 1 ≦ θ 3], and making the ratio of (θ 2/ θ 3) is more than 55%, when the aperture that makes pole piece is θ 4, the ratio of (θ 2/ θ 4) is set at more than 64%, thereby increases the leakage flux of coil, strengthens inductance, so, can provide the fans drive permanent magnet type rotating electric machine of the scrubbing-and-drying unit of the temperature rising in the time of can suppressing the underload running from must reducing by the shape electric current that converter is supplied with.
Secondly, use Fig. 8 that the permanent magnet type rotating electric machine of second execution mode of the present invention is described.
Fig. 8 is the cutaway view of rotor of the permanent magnet type rotating electric machine of second execution mode of the present invention, the X-Y profile direction of presentation graphs 4.
In Fig. 8, rotor 3 accommodates permanent magnet 14 in the permanent magnet patchhole 13 of a word shape that is formed at rotor core 12, but makes the axial length of permanent magnet 14 shorter than the axial direction of rotor core 12.
Thus, the magnetic flux that the armature winding that flows at the position of the rotor core 12 of not inserting permanent magnet 14 produces, the inductance that is obtained by the armature reaction magnetic flux becomes big, must diminish by the shape electric current, the fans drive permanent magnet type rotating electric machine of the scrubbing-and-drying unit of the temperature rising in the time of can suppressing low-speed running can be provided.
Claims (2)
1. the fans drive permanent magnet type rotating electric machine of a scrubbing-and-drying unit is characterized in that,
Has the stator of having implemented armature winding in a plurality of grooves on being formed at stator core, be supported on freely on the interior week of this stator by the predetermined gap rotation being formed at a plurality of permanent magnets in rotor core rotor that accommodates permanent magnet that inserts in the hole, on the outer peripheral face between the above-mentioned permanent magnet of above-mentioned rotor core, form tangent plane, aperture at the rotor magnetic pole that will be positioned at this permanent magnet top is made as θ 1, the aperture of the facewidth of said stator iron core is made as θ 2, when the separation that is formed at a plurality of grooves on the said stator iron core is made as θ 3, constitute the condition that satisfies θ 2≤θ 1≤θ 3, and making the ratio of (θ 2/ θ 3) is more than 55%, when the aperture of the pole piece that will be positioned at all sides of this tooth and prolong at circumferencial direction was made as θ 4, making the ratio of (θ 2/ θ 4) was more than 64%.
2. the fans drive permanent magnet type rotating electric machine of scrubbing-and-drying unit according to claim 1 is characterized in that,
The axial length of above-mentioned permanent magnet is shorter than the axial length of above-mentioned rotor core.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-258218 | 2007-10-02 | ||
| JP2007258218 | 2007-10-02 | ||
| JP2007258218A JP5193548B2 (en) | 2007-10-02 | 2007-10-02 | Permanent magnet rotating electric machine for fan drive of washing and drying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101404426A CN101404426A (en) | 2009-04-08 |
| CN101404426B true CN101404426B (en) | 2011-06-22 |
Family
ID=40538325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101663872A Expired - Fee Related CN101404426B (en) | 2007-10-02 | 2008-09-26 | Permanent magnet type rotating electric machine for driving fan of washing and drying machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5193548B2 (en) |
| CN (1) | CN101404426B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017055583A (en) * | 2015-09-10 | 2017-03-16 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Permanent magnet type rotary electrical machine and compressor using the same |
| DE102015218924A1 (en) * | 2015-09-30 | 2017-03-30 | Siemens Aktiengesellschaft | Electric machine with exact positioning of rotor magnets |
| KR20220114167A (en) * | 2021-02-08 | 2022-08-17 | 엘지전자 주식회사 | Laundry apparatus |
| CN113203023B (en) * | 2021-05-24 | 2022-07-19 | 长春中医药大学 | Two-way mutual projecting apparatus with switching-over function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2840496Y (en) * | 2005-09-19 | 2006-11-22 | 江门市洗衣机厂 | Single-phase capacitor running motor for washing machine |
| EP1772945A1 (en) * | 2001-09-05 | 2007-04-11 | JTEKT Corporation | Brushless DC motor |
| CN101154839A (en) * | 2006-09-26 | 2008-04-02 | 株式会社捷太格特 | Brushless motor and electric power steering apparatus incorporating the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4121673B2 (en) * | 1999-07-16 | 2008-07-23 | 松下電器産業株式会社 | Permanent magnet synchronous motor |
| JP4629840B2 (en) * | 2000-08-09 | 2011-02-09 | アイチエレック株式会社 | Brushless DC motor |
| JP3996417B2 (en) * | 2002-03-26 | 2007-10-24 | アイチエレック株式会社 | Permanent magnet motor |
| JP2003319618A (en) * | 2002-04-17 | 2003-11-07 | Nippon Steel Corp | Stator for use in electric motor with low core loss, and its manufacturing method |
| JP3938726B2 (en) * | 2002-07-12 | 2007-06-27 | 株式会社日立産機システム | Permanent magnet type rotating electric machine and compressor using the same |
| JP2004222410A (en) * | 2003-01-15 | 2004-08-05 | Nippon Steel Corp | Stator core for motor |
| JP4396142B2 (en) * | 2003-06-03 | 2010-01-13 | 株式会社ジェイテクト | Permanent magnet rotating electric machine |
| JP2006304546A (en) * | 2005-04-22 | 2006-11-02 | Toshiba Corp | Permanent magnet reluctance type rotary electric machine |
-
2007
- 2007-10-02 JP JP2007258218A patent/JP5193548B2/en not_active Expired - Fee Related
-
2008
- 2008-09-26 CN CN2008101663872A patent/CN101404426B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1772945A1 (en) * | 2001-09-05 | 2007-04-11 | JTEKT Corporation | Brushless DC motor |
| CN2840496Y (en) * | 2005-09-19 | 2006-11-22 | 江门市洗衣机厂 | Single-phase capacitor running motor for washing machine |
| CN101154839A (en) * | 2006-09-26 | 2008-04-02 | 株式会社捷太格特 | Brushless motor and electric power steering apparatus incorporating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101404426A (en) | 2009-04-08 |
| JP5193548B2 (en) | 2013-05-08 |
| JP2009089548A (en) | 2009-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8354766B2 (en) | Permanent magnet motor and washing machine provided therewith | |
| US7923879B2 (en) | Permanent magnet motor and washing machine provided therewith | |
| CN101783645B (en) | Motor controller and drum washing machine | |
| KR100682661B1 (en) | Motor, and washing machine comprising the same | |
| CN101404426B (en) | Permanent magnet type rotating electric machine for driving fan of washing and drying machine | |
| EP3470566B1 (en) | Washing machine | |
| JP5147343B2 (en) | Permanent magnet type rotary motor for washing machine fan drive | |
| US20100307201A1 (en) | Washing machine | |
| US9546445B2 (en) | Motor and washing machine having the same | |
| EP2722971A2 (en) | Motor and washing maching having the same | |
| CN102447326B (en) | Permanent magnet motor and washing machine | |
| JP5011051B2 (en) | Brushless motor | |
| JP2014054498A (en) | Washing machine | |
| JP6353764B2 (en) | Permanent magnet type rotating electric machine and vertical washing machine | |
| US11255036B2 (en) | Washing machine | |
| JP2016149861A (en) | Motor and washing machine employing the same | |
| JP6523912B2 (en) | Permanent magnet rotating electric machine and washing machine | |
| JP5601827B2 (en) | Washing machine | |
| JP2014033750A (en) | Washing and drying machine, and electric motor for driving washing and drying machine fan | |
| JP6419522B2 (en) | Permanent magnet rotating electric machine and washing machine | |
| JP4848342B2 (en) | Washer / dryer fan drive unit | |
| US20230223816A1 (en) | Driving device and clothing treatment device including the same | |
| US12018424B2 (en) | Washing machine | |
| JP2022051989A (en) | Motor and washing machine | |
| JP2010022107A (en) | Permanent magnet motor and washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |