CN1373541A - Washer - Google Patents
Washer Download PDFInfo
- Publication number
- CN1373541A CN1373541A CN02106614A CN02106614A CN1373541A CN 1373541 A CN1373541 A CN 1373541A CN 02106614 A CN02106614 A CN 02106614A CN 02106614 A CN02106614 A CN 02106614A CN 1373541 A CN1373541 A CN 1373541A
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- Prior art keywords
- field magnet
- axle
- motor
- rotor
- field
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- 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.)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
- H02K21/029—Vectorial combination of the fluxes generated by a plurality of field sections or of the voltages induced in a plurality of armature sections
Abstract
The field weakening of the magnetic flux of a permanent magnet is enabled. The rotor of the permanent magnet dynamo-electric machine is divided to move relatively.
Description
Technical field
The present invention relates to a kind of motor that utilizes permanent magnet as field magnet, be particularly related to the motor and the control method thereof that drive laundry usefulness, and relate to a kind of like this motor and control method thereof, the pole center position of wherein said first field magnet and described second field magnet can change, and the quantity of effective flux can change according to revolution.
Background technology
In a traditional permanent magnet motor, induced electromotive force E is by the common decision of the angular velocity of rotation ω that is arranged in constant magnetic flux phi that permanent magnet produced in the rotor and motor.That is to say that when motor angular velocity of rotation ω (rotating speed) increased, induced electromotive force E also increased in proportion.
Thereby, can in low-speed range, obtain high moment of torsion, but because the change in rotational speed scope is very narrow, operation is very difficult in high-speed range.Therefore, can consider to utilize magnetic field reduction control technology to make the expanded range that runs up.
In addition, the moment of torsion of motor by belt and gear drive, makes the motor of washing machine can guarantee fixing power output by belt pulley in wide velocity interval.But, a kind of direct kind of drive is arranged recently, be about to motor torque and directly be transferred to rotary body (for example blender) and rotary dehydration barrel.
In traditional washing machine, when the moment of torsion of motor during by belt and gear drive, the noise that the slip of belt and gear and impulsive sound cause becomes big problem.
In addition, owing to reasons such as magnetic field reduction heat that electric current produced and efficient reductions, directly in the kind of drive motor torque directly is being transferred under rotary body (for example blender) and the rotary dehydration barrel situation, is utilizing described magnetic field reduction technology to enlarge the scope of running up and have certain restriction.Because the described direct kind of drive does not have decelerator, can when washing and rinsing operation, motor that turn round in the high-speed high-power mode when rotary dehydration is operated in the low speed and large torque mode, that cover the wide range of speeds will be large-sized therefore.
Summary of the invention
In the present invention, adopt following washing machine.This washing machine comprises that rotary dehydration barrel that a rotation in the outer case freely pivots, a rotary body that freely pivots around the rotation identical with described rotation, are the switching mechanism and a motor of connection of the axis of the axis of described washing rotary dehydration barrel and rotary body or release on described washing rotary dehydration barrel bottom, stir by the inside that rotary body is rotated forward or backwards make described rotary dehydration barrel thus and carries out washing or rinsing operation, carry out rotary dehydration (drying) then and operate.
Described motor comprises that a stator and with elementary winding has the rotor of field magnet, described field magnet comprises that one has first magnetic field and one by the magnetic pole of the opposed polarity of direction of rotation arranged in succession and has second magnetic field by the magnetic pole of the opposed polarity of direction of rotation arranged in succession, and the magnetic pole of described first field magnet and second field magnet and described stator faces one another; One in order to the composite pole phase place that makes described first and second field magnets according to the torque direction mapping device with respect to the reversal of magnetism of first field magnet, described mapping device according to torque direction comprises a device, it can be by the moment direction of described the first rotor generation with by magnetic action equilibrium of forces between described first and second field magnets, make described first and the pole center homophase of the identical polar of described second field magnet, and a device that when the torque direction that produces in the rotor reverses, makes the pole center out-phase of described first and second field magnets.
Description of drawings
Fig. 1 is for showing the schematic diagram of the washing machine with permanet magnet type synchronous motor embodiment.
Fig. 2 is for showing first kind of situation schematic diagram, and wherein the pole center of the identical polar of the motor rotor among Fig. 1 is an out-phase.
Fig. 3 is for showing first kind of situation schematic diagram, and wherein the pole center of the identical polar of the motor rotor among Fig. 1 is a homophase.
Fig. 4 is for showing second kind of situation schematic diagram, and wherein the pole center of the identical polar of the motor rotor among Fig. 1 is an out-phase.
Fig. 5 is for showing the various characteristics curve chart corresponding to motor speed among Fig. 1.
Fig. 6 is the controlling party block diagram of motor among Fig. 1.
Fig. 7 is for showing the profile (actuator is in closed condition) according to the another kind of motor embodiment of the present invention.
Fig. 8 is for showing the profile (actuator is in opening) according to the another kind of motor embodiment of the present invention.
Fig. 9 is the view of demonstration according to the internal rotor of the motor of the another kind of embodiment of the present invention.
Figure 10 is the view of demonstration according to the internal rotor of the motor of the another kind of embodiment of the present invention.
Figure 11 is for showing the profile (actuator is in opening) according to the another kind of motor embodiment of the present invention.
The schematic diagram that Figure 12 measures according to the axial displacement of the rotor of the motor of the another kind of embodiment of the present invention for demonstration.
Figure 13 is for showing the rotor schematic diagram (increase difference gap) according to the another kind of motor embodiment of the present invention.
Figure 14 is for showing the schematic diagram according to the another kind of motor embodiment of the present invention.
Figure 15 is for showing the schematic diagram (a kind of the present invention is applied to the situation of 8-pole motor) according to the motor rotor of the another kind of embodiment of the present invention.
Figure 16 is for showing the layout schematic diagram according to the another kind of motor embodiment of the present invention.
Embodiment
Various embodiments of the present invention are in following description.
Fig. 1 shows the profile of washing machine, wherein is provided with the permanet magnet type synchronous motor according to present embodiment.
Adopt the permanent magnet field type synchronous motor that directly drives blender 73 as motor 2.Motor 2 is by clutch rotating mixer 73 and rotary dehydration barrel 72.
External box of microvave 71 and washing rotary dehydration barrel 72 are arranged in washing machine shell 70 shown in Figure 1.This washing machine comprise one around washing rotary dehydration barrel that the rotation 22 of external box of microvave 71 freely pivots, blender 73 that on described washing rotary dehydration barrel bottom, freely pivots, a cover around the rotation identical with described rotation the rotation of described washing rotary dehydration barrel switching mechanism 77 and motor 2 with connection of blender rotation or release, stir by the inside that rotary body is rotated forward or backwards make described rotary dehydration barrel thus and carries out washing or rinsing operation, carry out rotary dehydration then and operate.The washing machine that two kinds of patterns are arranged.When carrying out rinse, in a kind of pattern, water only is collected in the rotary dehydration barrel, and in another kind of pattern, comprises the whole water tank 71 equal water accumulation of rotary dehydration barrel.The present invention can be applied in the washing machine of any pattern.
The use in washing machine inverter (invertor) 78 of this configuration drives.This inverter need be controlled with microcomputer, and is a kind of Motor Control circuit, and it has by receiving the function that instruction changes the rotating control assembly of revolution from microcomputer.The microcomputer control circuit is to be built in inverter inside.Inverter 78 has the function of motor current detection device, can detect the current value of inflow motor 2.In addition, the basic components and parts as washing machine such as draining valve 74, system control panel 75 and level sensor 76 are set in addition.
Fig. 2 is for showing a kind of schematic diagram of situation, and wherein the center of the identical polar of the motor rotor among Fig. 1 is an out-phase.
In Fig. 3, armature winding 11 around and be fixed on the inside of stator core slot, and be bonded on the housing 13 of cooling channel 12 with circulate among cooling agent.
The embedded rotor 20 of permanent magnet is by being fixed in axle 22 the first rotor 20A and forming with the second rotor 20B that axle 22 separates.Certainly, also can replace the embedded rotor of permanent magnet with surperficial magnet type rotor.
In the first rotor 20A, permanent magnet 21A is arranged to alternately arrange by direction of rotation the magnetic pole of opposed polarity.Similarly, in the second rotor 20B, permanent magnet 21B is arranged to alternately arrange by direction of rotation the magnetic pole of opposed polarity.The field magnet of coaxial arrangement is relative with the magnetic pole of stator in the first and second two rotors.
Inboard at the second rotor 20B forms a nut portion 23B, then forms the bolt part 20A that contacts with nut portion 23B on axle.Utilize the screw thread function that the second rotor 20B is connect with axle, this moment, the second rotor 20B can move in respect to the axle rotation vertically.
In addition, on the position of leaving the second rotor 20B end face, be furnished with a stop part 24, the second rotor 20B can not be surpassed count a certain predetermined displacement from stator center.In addition, to drive stop part it is moved by the servomechanism that an actuator 25 is provided along axis direction, the displacement between the pole center of first field magnet and second field magnet can change.As a result, just can control total effective flux of forming with respect to the stator that in groove, has armature winding by first field magnet and second field magnet.
The effective flux that below will describe permanent magnet can change according to the direction of moment of torsion by layout recited above.
In the motor that utilizes armature winding in the stator and the permanent magnet in the rotor basically, when motor when the motor with motor during as generator the rotation direction of rotor be identical, and when motor during as motor and motor to act on epitrochanterian torque direction when being used as generator be opposite.
On the other hand, when motor was used as motor, the direction of moment of torsion also reversed when the direction of rotation of rotor reverses.Similarly, when motor was used as generator, the direction of moment of torsion also reversed when the direction of rotation of rotor reverses.
When above-mentioned basic theories about direction of rotation and torque direction is applied to according to the embodiments of the invention motor, can be as described below.
When washing machine drives in low engine speed range, for example, in washing that needs high pulling torque or rinsing operation, high torque characteristics is the center by the identical polar of forcing the layout the first rotor 20A and the second rotor 20B, with, as shown in Figure 3, increase is obtained by the effective flux of the permanent magnet generation on magnetic pole of the stator and opposite.
Secondly, when washing machine turns round in high engine speed range, for example, when rotary dehydration is operated, out-phase is caused at the center of the identical polar of the first rotor 20A and the second rotor 20B, and the second rotor 20B is moved with respect to axle 22, to enlarge the gap between the first rotor 20A and the second rotor 20B, as shown in Figure 4, just as nut portion is partly screwed out from bolt.Therefore, the effective flux that is produced by the permanent magnet on magnetic pole of the stator and opposite is reduced.In other words, a kind of magnetic field reduction effect is arranged here, and in high engine speed range, can obtain the high-output power characteristic.
Fig. 4 schematically shows by the center out-phase of the identical polar of the first rotor 20A and the second rotor 20B and enlarges gap between the first rotor 20A and the second rotor 20B, the situation that the effective flux of the permanent magnet generation on magnetic pole of the stator and opposite is reduced.
In Fig. 3 and 4, be relevant to the threaded portion 60 of bolt head 61, bolt and being described of nut portion 62.Bolt head 61 is equivalent to the first rotor 20A, and nut portion 62 is equivalent to the second rotor 20B.When the threaded portion 60 (being equivalent to 23A part among Fig. 2) of bolt during towards a direction rotation, according to acting on nut portion 62 torque direction, nut portion 62 is screwed or is outwarded winding.Similar phenomena also occurs on the second rotor 20B according to the direction of torsional interaction in rotor.
On the other hand, when motor when the motor, the torque direction when rotating forward and when rotating backward is opposite each other.Therefore, if Fig. 3 shows rotation status forward, then Fig. 4 shows rotation status backward.
One nut portion 23B is formed on the inboard of the second rotor 20B, and the bolt thread part 20A that contacts with nut portion 23B is formed on the axle.The two utilizes the screw thread function coupling.Though the state that Fig. 3 and Fig. 4 show is opposite each other,, can obtain same effect if the direction of screw thread reverses (for example changing right-handed thread into from left hand thread).Second rotor also moves when rotating with respect to axle vertically.
When motor in washing or rinsing when operation running, the pole center homophase of identical polar that can be by making the first rotor 20A and the second rotor 20B, as shown in Figure 3, the effective flux that provides with the permanent magnet that increases by magnetic pole of the stator and opposite is even it is a rotary manipulation or rotary manipulation is all right backward forward.
Secondly, when motor operation in the high rotation speed scope, for example rotary dehydration operation, the pole center of the identical polar of the first rotor 20A and the second rotor 20B is moved and is out-phase, and simultaneously, as shown in Figure 4, the second rotor 20B is moved with respect to axle 22, thereby enlarge the gap between the first rotor 20A and the second rotor 20B, be similar to the threaded portion back-out of nut portion from bolt.Therefore, the effective flux that is provided by the permanent magnet on magnetic pole of the stator and opposite is reduced.In other words, produce the reduction magnetic field effect here, and in high engine speed range, can obtain constant characteristics of output power.
Below putting up with the induced electromotive force that produces according to motor of the present invention is described.
Fig. 5 shows effective flux, induced electromotive force and the terminal voltage characteristic with respect to the angular velocity of rotation of permanent magnet synchronous motor.
Induced electromotive force E is determined by the constant magnetic flux phi that is arranged in the permanent magnet generation in the rotor and the angular velocity of rotation ω of motor.In other words, shown in Fig. 6 (a), if the constant magnetic flux phi is a constant, induced electromotive force E1 increases with angular velocity of rotation ω (rotary speed) with being directly proportional and increases.But, because the influence of power supply wiring terminal voltage and inverter self-capacity, inverter has the limit on output voltage, and the induced electromotive force that motor produced under the normal operation situation also has the limit.Therefore, in permanent-magnet synchronous motor, must carry out the reduction control of so-called magnetic field a scope more than the rotating speed, to reduce the magnetic flux that permanent magnet was produced.
Because induced electromotive force increases with angular velocity of rotation in proportion, the electric current of magnetic field reduction control must increase.Therefore need big electric current of guiding to enter the primary conductor coil, thereby the heat that produces in the coil also increases, this will cause the reduction of efficient, can cause the permanent magnet demagnetization because motor is in the high rotation speed scope and because the heat that produces surpasses cooling capacity.
For example, shown in Fig. 5 (a), when the magnetic flux phi 1 that the permanent magnet in being arranged in rotor produces changed to magnetic flux phi 2 on angular velocity of rotation ω 1 (rotary speed) point, the induced electromotive force E1 of motor changed to induced electromotive force E2.Because this characteristic, the maximum of induced electromotive force is restricted.
Similarly, Fig. 5 (b) is a curve chart, shows that schematically induced electromotive force E can remain constant when the little by little corresponding angular velocity of rotation ω of magnetic flux phi (rotary speed) changes.
One for the embodiment that obtains characteristic device as shown in Figure 6 in, first field magnet of motor is fixed on the axle, second field magnet then separates with axle.Utilize the screw thread function to connect mutually between the axle and second field magnet, promptly forming the threaded portion of bolt on the axle and in second field magnet, forming nut portion.This is external to leave on the endface position of second field magnet stop part is set, and is provided with one and can makes stop part be parallel to axially movable servomechanism according to rotary speed.
The controlling party block diagram of motor 2 in Fig. 6 displayed map 1.
At first, drive the driving operation that information that judgment part 101 obtains according to the configuration information that obtains from system control panel (75 Fig. 1), from the revolution of level sensor and permanent-magnet type synchronous motor 2 and electric current output order value are judged permanent-magnet type synchronous motor 2.
Coordinate to be for conversion into three-phase alternating current the conversion portion 103 in rotation from the output of Current Control piece 102, and control permanent-magnet type synchronous motor 2.Each phase current of permanent-magnet type synchronous motor 2 is converted to the twin shaft electric current by detecting each phase current (two-phase current at least) and revolution, and feeds back to current instruction value.In addition, revolution, position of magnetic poles etc. are detected by detector 106, and feed back to each controll block by position of magnetic pole conversion portion 107 and rate conversion part 108.
Though the embodiment of Fig. 7 comprises the position of a motor 2 and the current sensor of a velocity transducer and a motor, the control circuit (no sensor arrangement) that does not have the drive motor 2 of these Sensor sections also can be used.
In addition, because in permanent-magnet type synchronous motor of the present invention, the pole center of the same polarity of first and second rotors is urged to homophase or out-phase according to working order, permanent-magnet type synchronous motor of the present invention has the function of the advance angle of proofreading and correct supplying electric current, this be by a controller according to the position move angle of the composite pole of first field magnet and second field magnet correspondingly control inverter realize.
The embodiment of the advance angle of correction supplying electric current is in following description.
By first field magnet is fixed on the axle, by second field magnet and axle separate and threaded portion by forming bolt in axle and form nut portion to increase a kind of screw thread function that makes axle and the mutual connection of second field magnet in second field magnet, when motor operation, second field magnet also moves axially when being rotated.Figure 12 shows, when the pole center of the same polarity of first and second rotors forms homophase or out-phase according to working order, and the relation between angle of rotation and the axial displacement.
Referring to Figure 12, owing between the corner of second rotor and axial displacement L, a proportionate relationship is arranged, can measure axial displacement L with detector for displacement measuring 64, and it is fed back to the position probing circuit (label 106 among Fig. 6) of control circuit, control the advance angle of proofreading and correct supplying electric current to supply with optimization, make it to become the conversion value of traveling angle of the composite pole position of first field magnet and second field magnet.
Fig. 7 is for showing the profile according to another embodiment of motor of the present invention.
The first rotor 20A is fixed on the axle 22, the second rotor 20B separates with axle 22, bolt thread part 23A forms the part of axle, one sleeve 41 is fixed on the second field magnet inside, nut portion 23B then is fixed on the inside of sleeve 41, like this, and when the second rotor 20B rotates with respect to the first rotor 20A, gap between the first rotor 20A and the second rotor 20B is just extended, just looks like the threaded portion of nut portion from bolt screwed out.
When second rotor rotation, owing between second magnetic field and the axle 22 a spot of play is arranged, between second field magnet inside and axle 22 flux linkage takes place and change, the trouble of for example electrolytic corrosion and so on may take place.Therefore, the sleeve 41 usefulness resistivity nonmagnetic substance manufacturing higher than iron.So, the inner and axle of second field magnet 22 forms magnetic and electric insulation by sleeve 41.
Supporting device 40A, 40B are arranged in sleeve 41 inside, to guide rotatablely moving between second field magnet and the axle, reciprocating motion and compound motion.
By on the part axle, forming the screw thread function that bolt thread part 23A has, the second rotor 20B can be bound up on the axle.One movably stop part 24 be arranged in the position of leaving the second field magnet end face, supporting device 42,47 is arranged between stop part 24 and the axle, and between the end face of the stop part and the second rotor 20B, so that guide second field magnet with respect to rotatablely moving between the axle, reciprocating motion and compound motion.Supporting device 42 has the function of thrust bearing, and supporting device 47, though be a journal bearing, has also that guiding rotatablely moves, a function of reciprocating motion and compound motion.
In addition, by arranging a spring 48, supporting device 42 can improve as the function of thrust bearing.
A magnetic clutch below will be described, as an example that can make stop part 24 be parallel to the mobile servomechanism of axle.
The structure of magnetic clutch comprises the coil 46 and the stop part 24 that also can be used as movable magnetic core that are wound on the yoke 44.Yoke 44 and coil 46 are fixed on the motor frame 49 or (not shown) on the part of compressor, and are furnished with spring 45 between yoke 44 and stop part 24, so that have the function of resetting means when the braking excitation.Arrange that between framework 49 and axle 22 bearing 50 is so that bolster 22.
Fig. 7 is presented at the coil 46 under the excited state not, and Fig. 8 is presented at the coil 46 under the excited state.
By making coil 46 excitations, yoke 44 becomes and is strong magnet, can attract also to have the stop part 24 of movable magnetic core function.
Secondly, when stop part 24 is attracted by magnet exciting coil 46, apply moment of torsion the second rotor 20B is moved with respect to axle 22, to enlarge the gap between the first rotor 20A and the second rotor 20B, as shown in Figure 4, just look like that the threaded portion of nut portion from bolt screwed out.Therefore, the current loading that flows to coil 46 is reduced.
When stop part 24 is attracted by magnet exciting coil 46, the current loading that flows to coil can reduce by the second rotor 20B is increased moment of torsion, just make second rotor relative to rotating with the first rotor 20A, making the gap between the first rotor 20A and the second rotor 20B extended, just looks like that the threaded portion of nut portion from bolt screwed out.
Fig. 9 shows that sleeve 41 is fixed on the example of the second rotor 20B inside.
As one of the method for fixing second rotor and axle, the second rotor 20B and sleeve 41 fixedly be by on the contact surface of the two, forming projection and depressed part assigns to realize.The first rotor 20A is fixed on internal structure and the second rotor 20B of axle on 22 and is illustrated among Fig. 9 with difference between 22 internal structure of separating.
Figure 10 shows the another kind of embodiment of the present invention.
Form a sunk part 53 on an end face of first field magnet, first field magnet and second field magnet contact with each other herein, and form the ledge 54 that also has the sleeve function at second field magnet.Ledge 54 and sleeve 41 can form same unit.So, can guarantee that sleeve 41 has enough spaces.Therefore, this is the method that can obtain a kind of motor, and by arranging spring 48, supporting device 40A, 40B and nut portion 23B effectively, its second rotor has thin axial width.
Figure 11 shows the another kind of embodiment of the present invention.
Those are identical among the basic element of character shown in Figure 11 and Fig. 7, but the part that is equivalent to magnetic clutch changes.Figure 11 shows coil 46 under excited state, and yoke 44 is thrown off from stop part 24 by spring 45 when excitation is cut off.In addition, this embodiment has following properties, and promptly owing to bolt thread part 23A that has moment of torsion to apply and the synergistic screw thread function between the nut portion 23B, the second rotor 20B is subjected to a thrust.Therefore, when the excitation of coil 46 was cut off, by increasing thrust owing to the interaction between screw thread and the moment of torsion to release stop part 24, stop part 24 was thrown off from yoke 44.Yoke 44 is fixed on the framework 49 by arm 52, or is fixed on the part of compressor (not shown).
Be similar to Fig. 7 and 8, magnetic clutch shown in Figure 11 is an example that can make stop part 24 be parallel to axially movable servomechanism, utilize hydraulic actuator can more accurately carry out the location of stop part, other example is a linear drive apparatus that utilizes rotor and ball-screw, linearity motor or similar device.
Figure 13 shows other embodiments of the invention.
Be characterised in that according to this motor of the present invention the first rotor 20A is securely fixed on the axle 22, but the second rotor 20B there is the degree of freedom on axle.Therefore, small play is arranged between 22 in mechanical dimension, thereby when high pulling torque or centrifugal force put on the second rotor 20B, the second rotor 20B may become off-centre at the second rotor 20B and axle.Gap " Gap 2 " between second rotor 20B with second field magnet and stator is greater than the gap between the first rotor 20A with first field magnet and the stator " Gap 1 ".So, can prevent because eccentric second rotor that is caused and the Mechanical Contact between the stator.
Be furnished with a plurality of springs 48 and 51 separately between the stop part 24 and the second rotor 20B and between the first rotor 20A and the second rotor 20B, thereby a kind of effect that can suppress rapid fluctuation among the second rotor 20B is arranged, and can assist because the motion of the second rotor 20B that torque direction produces.
Certainly, parts can make up in various manners shown in each figure, perhaps increase or cancellation according to application target.
Figure 14 shows the electro-dynamic machinery according to an alternative embodiment of the invention.
This is the synchronous electro-dynamic machinery of a kind of permanent-magnet type, and wherein the screw thread 23 of second rotor shown in Fig. 2 is cancelled, and the mechanism that angle of rotation θ can be moved is provided in addition.
Provide being recessed into-bossing of similar cogwheel (cogwheel) for axle 22, replace the threaded portion of second rotor shown in Fig. 2, and recessed-bossing is to be used for axle is inserted in the internal side diameter of second rotor.But, when axle 22 inserts the internal side diameter of second rotor, have only fixing rotational angle theta can make it movable by the groove width that enlarges greater than the width of engaging tooth.In addition, by being set, spring 26 and damper 27 can alleviate collision rapidly between tooth that meshes and groove.Similarly actuator can be set.When washing machine when low rotation speed area is driven, for example, when washing that needs high pulling torque or rinsing operation, the layout at the center of the identical polar by forcing to make the first rotor 20A and the second rotor 20B, with increase the effective flux that is produced by magnetic pole of the stator and opposite permanent magnet, as shown in Figure 3, just can obtain high torque characteristics.
Secondly, when motor operation in high-speed range, for example, during the rotary dehydration operation, as shown in figure 14, the center of the identical polar of the second rotor 20B is with respect to 22 one-tenth out-phase of axle.Therefore, the effective flux that permanent magnet produced by magnetic pole of the stator and opposite is reduced.In other words, reduction effect in magnetic field is arranged here, and in high engine speed range, can obtain the characteristic of high-output power.
Though above explanation of the invention is made, there is no need to illustrate again that the present invention also can be applicable to two pole motors or situation pole motor on four-pole motor.As an example, Figure 15 is a schematic diagram, illustrate permanent-magnet synchronous motor rotor, wherein the present invention is applied to an ends of the earth motor.In addition, the present invention can be applied to any type of rotor, as interior dress magnet type or surperficial magnet type.
Figure 16 is the schematic diagram of the washing machine of direct driving method of demonstration and gear train mould assembly method.
In Figure 16, to remove outside the gear, other parts all are provided with equally.Figure 16 (a) represents direct driving method, and Figure 16 (b) expression gear train mould assembly method.In Figure 16 (b), gear 79 is arranged on the axle of described washing-rotary dehydration cylinder, and is arranged between the switching mechanism that is used for connecting or discharges described blender (Fig. 1 73) axle (Fig. 1 77) and the motor 2.Gear can be installed in the switching mechanism 77.Certainly, need not go into the details, the two all can be applicable on the motor of the present invention.
Because according to permanent magnet synchronous motor of the present invention is so to construct, be that rotor is divided into first field magnet and second field magnet that is arranged on independent, the pole center of first and second field magnets changes according to torque direction simultaneously, thereby the effective flux that permanent magnet produced on magnetic pole of the stator and opposite also can change.
Specifically, the control of the reduction magnetic field of the compressor of air-conditioning unit can easily realize, and correspondingly have the effect of broad range speed Control.
Claims (15)
1. washing machine, comprise that one centers on the rotary dehydration barrel that the rotation in the outer case freely pivots, one rotary body that on described washing rotary dehydration barrel bottom, freely pivots around the rotation identical with described rotation, a switching mechanism and a motor that the axis of a described washing rotary dehydration barrel and the axis of rotary body connect or discharge, stir by the inside that rotary body is rotated forward or backwards make described rotary dehydration barrel thus and carries out washing or rinsing is operated, carry out the rotary dehydration operation then, wherein
Described motor comprises:
One stator and with elementary winding has the rotor of field magnet, described field magnet comprises that one has first magnetic field and one by the magnetic pole of the opposed polarity of direction of rotation arranged in succession and has second magnetic field by the magnetic pole of the opposed polarity of direction of rotation arranged in succession, and the magnetic pole of described first field magnet and second field magnet and described stator faces one another; And
One in order to the phase place of the composite pole that makes described first and second field magnets according to the torque direction mapping device with respect to the reversal of magnetism of described first field magnet, described mechanism according to the torque direction conversion comprises a device, this device can be by the moment direction of described the first rotor generation with by magnetic action equilibrium of forces between described first and second field magnets, make described first and the pole center homophase of the identical polar of described second field magnet, and a device that when the torque direction that produces in the rotor reverses, makes the pole center out-phase of described first and second field magnets.
2. according to the described washing machine of claim 1, it is characterized in that,
Described motor comprises that one makes described first field magnet and second at the device of field magnet homophase on initial position and the device of the mutual out-phase of pole center that makes described first and second field magnet, and
The described mechanism that pole center is changed by the moment of torsion direction so constructs, be that described first field magnet can be fixed on the axle, and described second field magnet can separate with described axle, and by described axle can relatively be relatively moved in an angle with described second field magnet, can make the first field magnet pole center and the mutual out-phase of the second field magnet pole center, described angle is equivalent to a utmost point of magnetic pole.
3. according to claim 1 or 2 described washing machines, it is characterized in that the motor that this washing machine uses comprises:
The described mechanism that can change pole center according to torque direction, described mechanism so constructs, promptly, described first field magnet is fixed on the axle, and described second field magnet can separate with described axle, and, make described axle have the screw thread function of mutual connection with described second field magnet by on described axle, forming bolt thread part and in described second field magnet, forming nut portion;
On a position of leaving the described second field magnet end face, a stop part is arranged; With
One can make described stop part be parallel to the servomechanism that described axle moves according to described motor speed.
4. according to any one described motor in the claim 1 to 3, it is characterized in that, move and be corrected according to the position of the composite pole of described first field magnet and described second field magnet by the advance angle of controller institute supplying electric current of the described controller of control.
5. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, by on described axle, forming bolt thread part and in described second field magnet, forming a nut portion, make described axle have the screw thread function of mutual connection with described second field magnet, the axial displacement of described second field magnet can be detected, and is used to control the first lead angle of controller institute supplying electric current of described inverter according to corresponding to the position move angle of the composite pole of described first field magnet and described second field magnet and be corrected by one.
6. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separate with described axle, and a plurality of can described second field magnet of guiding rotatablely move, the supporting device of reciprocating motion and compound motion is arranged in described second field magnet and between described.
7. according to any one described electric rotating machine in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, and there is a sleeve to be plugged between the inner and described axle of described second field magnet, in order to described second field magnet is fixed in described sleeve.
8. according to the described electric rotating machine of claim 7, it is characterized in that described sleeve is made by the nonmagnetic substance that resistivity is higher than iron.
9. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, before described second field magnet and be furnished with a plurality of springs afterwards, to guide the rotatablely moving of described second field magnet, reciprocating motion and compound motion.
10. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, contact with each other the place at described first field magnet and described second field magnet, be formed with a sunk part on an end face of described first field magnet, be formed with a jut in described second field magnet, this jut also can be used as the function of described sleeve.
11. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, and in the location arrangements of leaving the described second field magnet end face stop part is arranged, described stop part has the usefulness of a supporting device for the rotatablely moving of described second field magnet of guiding and described axle, reciprocating motion and compound motion.
12. according to any one described motor in the claim 1 to 3, it is characterized in that, described first field magnet is fixed on the axle, described second field magnet separates with described axle, in the gap between described rotor with described second field magnet and the described stator greater than the gap between rotor with described first field magnet and the described stator.
13., it is characterized in that described first field magnet and described second field magnet are in the face of the magnetic pole of described stator according to any one described motor in the claim 1 to 3, and described first and second field magnets can move relatively axially.
14. according to any one described washing machine in the claim 1 to 3, it is characterized in that, described motor is running like this, promptly when low-speed running, make the position homophase of the pole center of described first field magnet and described second field magnet, and when high speed and low load operation, make the position out-phase of the pole center of described first field magnet and described second field magnet.
15. according to any one described washing machine in the claim 1 to 3, it is characterized in that, described motor is running like this, promptly when washing or rinsing operation, make the position homophase of the pole center of described first field magnet and described second field magnet, and when rotary dehydration, make the position out-phase of the pole center of described first field magnet and described second field magnet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP053431/01 | 2001-02-28 | ||
| JP2001053431A JP3879415B2 (en) | 2001-02-28 | 2001-02-28 | Washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1373541A true CN1373541A (en) | 2002-10-09 |
Family
ID=18913897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02106614A Pending CN1373541A (en) | 2001-02-28 | 2002-02-28 | Washer |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20020116961A1 (en) |
| JP (1) | JP3879415B2 (en) |
| CN (1) | CN1373541A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020852A1 (en) * | 2015-08-04 | 2017-02-09 | 海尔亚洲株式会社 | Washing machine |
| CN114150475A (en) * | 2021-11-26 | 2022-03-08 | 深圳和而泰小家电智能科技有限公司 | Living body detection method and circuit and clothes treatment equipment |
| CN115632533A (en) * | 2022-12-07 | 2023-01-20 | 江苏中工高端装备研究院有限公司 | Permanent magnet synchronous motor magnetic variable real-time monitoring device and monitoring method |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3879413B2 (en) * | 2001-02-28 | 2007-02-14 | 株式会社日立製作所 | Conveying system and rotating electric machine |
| JP3861610B2 (en) * | 2001-02-28 | 2006-12-20 | 株式会社日立製作所 | Machine Tools |
| JP3937966B2 (en) * | 2002-07-31 | 2007-06-27 | 株式会社日立製作所 | Rotating electric machine and automobile equipped with it |
| US6891298B2 (en) | 2002-08-28 | 2005-05-10 | Emerson Electric Co. | Interior permanent magnet machine with reduced magnet chattering |
| US6717314B2 (en) * | 2002-08-28 | 2004-04-06 | Emerson Electric Co. | Interior permanent magnet motor for use in washing machines |
| US6727623B2 (en) | 2002-08-28 | 2004-04-27 | Emerson Electric Co. | Reduced impedance interior permanent magnet machine |
| US6946766B2 (en) * | 2002-08-28 | 2005-09-20 | Emerson Electric Co. | Permanent magnet machine |
| JP2005021362A (en) * | 2003-07-02 | 2005-01-27 | Hitachi Home & Life Solutions Inc | Washing and drying machine |
| JP5089066B2 (en) * | 2006-03-27 | 2012-12-05 | 本田技研工業株式会社 | Electric motor |
| US7821217B2 (en) | 2006-05-22 | 2010-10-26 | Black & Decker Inc. | Electronically commutated motor and control system employing phase angle control of phase current |
| JP4515439B2 (en) * | 2006-12-04 | 2010-07-28 | 本田技研工業株式会社 | Control device for hybrid vehicle |
| EP2192684B1 (en) | 2007-09-18 | 2020-07-08 | Kabushiki Kaisha Toshiba | Variable magnetic flux drive system |
| JP5329801B2 (en) * | 2007-12-20 | 2013-10-30 | 株式会社東芝 | Variable magnetic flux drive system |
| JP2009126404A (en) * | 2007-11-26 | 2009-06-11 | Hitachi Ltd | Hybrid vehicle |
| DE102009001271A1 (en) * | 2009-03-02 | 2010-09-09 | BSH Bosch und Siemens Hausgeräte GmbH | Method for determining the loading and / or the imbalance of a laundry drum of a washing machine and corresponding circuit arrangement |
| JP6363423B2 (en) * | 2014-08-05 | 2018-07-25 | アクア株式会社 | Drum washing machine |
| KR101663522B1 (en) * | 2015-02-10 | 2016-10-07 | 엘지전자 주식회사 | Motor driving apparatus and laundry treatment machine including the same |
| KR102331602B1 (en) * | 2015-04-06 | 2021-11-30 | 엘지전자 주식회사 | Laundry Treating Apparatus |
| CN107488971B (en) * | 2017-08-30 | 2022-03-15 | 青岛海尔洗衣机有限公司 | Speed reducer and washing machine using the same |
| US11424653B2 (en) * | 2018-12-13 | 2022-08-23 | Chun-Jong Chang | DC motor-dynamo for bidirectional energy conversion between mechanical and electrical energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2106057A1 (en) * | 1971-02-09 | 1972-09-14 | Bosch Gmbh Robert | Alternator |
| US4305031A (en) * | 1979-05-15 | 1981-12-08 | Lucas Industries Limited | Rotary electrical machine |
| US5266855A (en) * | 1986-03-06 | 1993-11-30 | Fisher & Paykel, Limited | Electric motor for clothes washing machine drive |
| NZ215389A (en) * | 1986-03-06 | 1992-02-25 | Fisher & Paykel | Washing machine: spin tub connected to drive at low water level |
| JP2905119B2 (en) * | 1995-06-30 | 1999-06-14 | 株式会社東芝 | Washing machine |
| US6191561B1 (en) * | 1998-01-16 | 2001-02-20 | Dresser Industries, Inc. | Variable output rotary power generator |
| JP3524376B2 (en) * | 1998-03-31 | 2004-05-10 | 株式会社東芝 | Dehydration combined washing machine |
-
2001
- 2001-02-28 JP JP2001053431A patent/JP3879415B2/en not_active Expired - Fee Related
-
2002
- 2002-02-27 US US10/083,487 patent/US20020116961A1/en not_active Abandoned
- 2002-02-28 CN CN02106614A patent/CN1373541A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020852A1 (en) * | 2015-08-04 | 2017-02-09 | 海尔亚洲株式会社 | Washing machine |
| CN114150475A (en) * | 2021-11-26 | 2022-03-08 | 深圳和而泰小家电智能科技有限公司 | Living body detection method and circuit and clothes treatment equipment |
| CN114150475B (en) * | 2021-11-26 | 2024-01-12 | 深圳和而泰小家电智能科技有限公司 | Living body detection method, circuit and clothes treatment equipment |
| CN115632533A (en) * | 2022-12-07 | 2023-01-20 | 江苏中工高端装备研究院有限公司 | Permanent magnet synchronous motor magnetic variable real-time monitoring device and monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002262494A (en) | 2002-09-13 |
| JP3879415B2 (en) | 2007-02-14 |
| US20020116961A1 (en) | 2002-08-29 |
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