CN1721615A - Driving unit for washing machine and method for controlling the same - Google Patents
Driving unit for washing machine and method for controlling the same Download PDFInfo
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- CN1721615A CN1721615A CNA2005100844059A CN200510084405A CN1721615A CN 1721615 A CN1721615 A CN 1721615A CN A2005100844059 A CNA2005100844059 A CN A2005100844059A CN 200510084405 A CN200510084405 A CN 200510084405A CN 1721615 A CN1721615 A CN 1721615A
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- rotation
- ring gear
- driving shaft
- speed
- reach
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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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/206—Mounting of motor
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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
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
- D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
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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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Power Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
A driving unit for a washing machine, and method for controlling the same. The driving unit includes a bearing housing fixedly secured to an outer tub. A motor is mounted on the bearing housing. A ring gear shaft is rotatably mounted to the bearing housing and is coupled to an inner tub. A carrier shaft is rotatably mounted in the ring gear shaft, with a driving shaft rotatably mounted in the carrier shaft. The driving shaft is coupled to the motor. A reduction gear is positioned between the ring gear shaft and the carrier shaft to reduce a speed of the ring gear shaft. A one directional holding device that holds the carrier shaft when the driving shaft rotates in a first direction, and holds two of the carrier shaft, the ring gear shaft, and the driving shaft when the driving shaft rotates in a second direction.
Description
The cross reference of related application
The application requires the korean application No.10-2004-0055444 of submission on July 16th, 2004 and the priority of No.10-2004-0055445, and its full content is incorporated reference at this.
Technical field
The present invention relates to washing machine and control the method for this washing machine, even and relate in particular to and a kind ofly can simplify the structure of drive unit and use miniature motor that the washing machine of enough driving torque also can be provided within it.
Background technology
Usually, washing machine comes washing clothes by the mobilization of laundry water and such as the chemical action of washing agent etc.
In washing machine, roof-mounted washing machine and front-loading washing machine are arranged.In roof-mounted washing machine, turning barrel formula washing machine and vibration-type (pulsator) washing machine is arranged; In front-loading washing machine, tumbling-box washing machine is arranged.
In order to wash and to dewater, washing machine is provided with drive unit.This drive unit adopts induction motor usually.
This induction motor does not have brush and commutator, and on the rotor magnet is not set.Therefore, the phenomenon that this induction motor does not have brush and commutator to burn out does not have the degaussing phenomenon of magnet yet.This induction motor produces revolving force by the reciprocation that flows through the electric current that is wrapped in the rotating excitation field that electric wire produced on the stator and senses on rotor.
This induction motor is connected to wash shaft, and wash shaft is connected to back gear.This wash shaft has connection clutch thereon, is used for by using the speed of bucket in the back gear increase/reduction.
A bucket low speed rotation was come washing clothes in tumbling-box washing machine made by reduction gearing in washing process, and in dehydration, removed the water in the clothing when interior bucket rotates with high rotational speed.
Yet traditional drive unit of washing machine has some problems.
The first, if drive unit is used induction motor, although the unit cost of motor can reduce so, owing to additionally need be used for the clutch and the deceleration device of governor motor rotating speed, complexity so the structure of drive unit becomes.
The second, because drive unit is with moving such as devices such as clutches, so increased mechanical noise and electrical noise.
The 3rd, because in washing process, the torque in acting on the bucket reduces pro rata with the speed that realizes by reduction gearing and increases, so can directly start washing process.In contrast, in the starting stage of dehydration, because the deceleration of reduction gearing can not make torque increase, so the torque deficiency of interior bucket.Particularly under the situation of using miniature motor, this problem is outstanding especially.
The 4th, in order to start dehydration, interior bucket along just/opposite spin so that clothing distributes equably, then torque is increased to certain level and starts dehydration mode.Yet because long section start-up time (time period), this method has prolonged spin cycle, and has increased power consumption.
The 5th, be used to start dehydration interior bucket just/opposite spin produced serious mechanical noise and electrical noise.
Summary of the invention
Therefore, the method that the present invention relates to a kind of washing machine and be used to control this washing machine, it has eliminated above-mentioned one or more problems substantially.
The method that the object of the present invention is to provide a kind of washing machine and be used to control this washing machine, it can simplify the structure of drive unit, even and use miniature motor thereon, it also can obtain enough torques.
Other advantage of the present invention, purpose and feature will partly be set forth in the following description, and for will partly becoming clear after the description of this area those skilled in the art below having studied, perhaps can learn from the practice of the present invention.Can realize and obtain purpose of the present invention and other advantage by specifically noted structure in the specification of being write, its claims and accompanying drawing.
In order to realize these purposes and other advantage, according to purpose of the present invention,, the invention provides a kind of drive unit of washing machine as in this concrete enforcement and broadly described, comprising: bearing housing, it is fixed firmly on the outer bucket of this washing machine; Motor, it is installed on this bearing housing; Ring gear shaft, it rotatably is installed on this bearing housing, and this ring gear shaft is connected to the interior bucket of this washing machine; Reach (carrier shaft), it rotatably is installed on this ring gear shaft; Driving shaft, it rotatably is installed on this reach and is connected to this motor; Reduction gearing, it is between this ring gear shaft and this reach, to reduce the rotating speed of this ring gear shaft; And unidirectional fixation device (one directionalholding device), it fixes this reach at this driving shaft when first direction rotates, and fixes in this reach, this ring gear shaft and this driving shaft two at this driving shaft when second direction is rotated.
In one embodiment, this unidirectional fixation device comprises: first unilateral bearing between this bearing housing and this reach, this first unilateral bearing only when this driving shaft during along the rotation of this first direction, are fixed to this reach on this bearing housing; And second unilateral bearing between this ring gear shaft and this reach, this second unilateral bearing only when this driving shaft during along the rotation of this second direction, is fixed this ring gear shaft and this reach.This drive unit can comprise: be installed in a plurality of spring bearings on the external peripheral surface of this ring gear shaft, in order to this ring gear shaft of two-way rotation; And the spring bearing between this reach and this driving shaft, in order to support and this driving shaft of two-way rotation.
Selectively, this unidirectional fixation device can comprise: first unilateral bearing between this bearing housing and this reach, this first unilateral bearing only when this driving shaft during along the rotation of this first direction, are fixed to this reach on this bearing housing; And second unilateral bearing between this reach and this driving shaft, this second unilateral bearing only when this driving shaft during along the rotation of this second direction, is fixed this reach and this driving shaft.This drive unit can comprise: be installed in a plurality of spring bearings on the external peripheral surface of this ring gear shaft, in order to this ring gear shaft of two-way rotation; And a plurality of spring bearings between this ring gear shaft, this reach and this driving shaft, in order to support and this driving shaft of two-way rotation.
Selectively, this unidirectional fixation device can comprise: first unilateral bearing between this bearing housing and this reach, this first unilateral bearing only when this driving shaft during along the rotation of this first direction, are fixed to this reach on this bearing housing; And second unilateral bearing between this ring gear shaft and this driving shaft, this second unilateral bearing only when this driving shaft when second direction is rotated, fix this ring gear shaft and this driving shaft.This driving shaft can have the end that is positioned at this ring gear shaft, and this second unilateral bearing can be installed between this end and this ring gear shaft.
This drive unit can comprise: be installed in a plurality of spring bearings on the external peripheral surface of this ring gear shaft, in order to this ring gear shaft of two-way rotation; And a plurality of spring bearings between this ring gear shaft, this reach and this driving shaft, in order to support and this ring gear shaft of two-way rotation, this reach and this driving shaft.
This reduction gearing can comprise: sun gear, and it is formed on the external peripheral surface of this driving shaft; Planetary gear, it is mounted to the engagement of this sun gear and around this sun gear revolution, and around himself axle rotation; And internal gear, it is formed on the inner circumferential surface of this ring gear shaft, to mesh with this planetary gear.
In another scheme of the present invention, a kind of method that is used at dehydration control washing machine is provided, comprising: by making rotor along the direction rotation opposite with the direction of rotation of interior bucket, bucket rotates with first speed in this and make; By changing the direction of rotation of this rotor, bucket rotates with the second speed that is higher than first speed in this and make, thereby this rotor is rotated along the direction of rotation of being somebody's turn to do interior bucket; And, this rotor is rotated, to remove the water that places the clothing in this washing machine with dewatering speed.
This method also can comprise: when bucket reaches a desired speed in this, change the direction of rotation of this rotor.The step that bucket rotates with first speed in this can be comprised: should interior bucket with the speed rotation that can make the even distribution clothing of bucket in this.The step that bucket rotates with first speed in this also can be comprised: make barrel speed rotation in this with about 80～200rpm.
This method also can comprise: this rotor stopped before the direction of rotation that changes this rotor.
This rotor can be comprised: make this interior bucket with predetermined speed rotation, and the rotating speed of bucket accelerates to dewatering speed in will being somebody's turn to do with the step of dewatering speed rotation.
Should clothing be distributed predetermined speed equably.
This method also can comprise: reach this predetermined speed by bucket in quickening to be somebody's turn to do in the predetermined stage.The step of quickening the rotating speed of bucket in this can comprise: should accelerate to about 50～60rpm by interior bucket, should accelerate to about 80～200rpm by interior bucket then.
In another scheme of the present invention, a kind of method that is used to control washing machine is provided, comprising: carry out washing process, bucket rotates with first speed in wherein making by rotor; Carry out rinse cycle, wherein make in this bucket with this first speed rotation by rotating this rotor; And after finishing washing and rinse cycle and discharging washings, carry out dehydration.The step of carrying out this dehydration comprises: by making rotor along the direction rotation opposite with the direction of rotation of interior bucket, bucket rotates with second speed in this and make; By changing the direction of rotation of this rotor, bucket rotates with the third speed that is higher than this second speed in this and make, thereby this rotor is rotated along the direction of rotation of being somebody's turn to do interior bucket; And this rotor is rotated with dewatering speed, to remove the water that places the clothing in this washing machine.This method also can comprise: when bucket in this reaches a desired speed, change the direction of rotation of this rotor.
Be to be understood that aforementioned generality of the present invention is described and following specific descriptions all are schematic and exemplary, it is intended to be the claimed further explanation that the invention provides.
Description of drawings
The accompanying drawing that is comprised provides further understanding of the present invention, it is incorporated among the application and constitutes the application's a part, it shows embodiments of the invention and is used from explanation principle of the present invention with specification one, wherein in all views, use the same reference numerals to represent identical parts.The ratio of described accompanying drawing is not necessary, and it focuses on illustrating principle of the present invention.Wherein:
Fig. 1 shows the schematic diagram of the drive unit of washing machine according to the preferred embodiment of the invention;
That Fig. 2 A shows is shown in Figure 1, in the cross section of first embodiment of the unidirectional fixation device of stationary state;
That Fig. 2 B shows is shown in Figure 1, in the cross section of first embodiment of the unidirectional fixation device of releasing orientation;
Fig. 3 A and Fig. 3 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 1 moves under washing mode;
Fig. 4 A and Fig. 4 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 1 moves under dehydration mode;
Fig. 5 shows the schematic diagram of second embodiment of the unidirectional fixation device of drive unit shown in Figure 1;
Fig. 6 A and Fig. 6 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 5 moves under washing mode;
Fig. 7 A and Fig. 7 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 5 moves under dehydration mode;
Fig. 8 shows the schematic diagram of the 3rd embodiment of the unidirectional fixation device of drive unit shown in Figure 1;
Fig. 9 A and Fig. 9 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 8 moves under washing mode;
Figure 10 A and Figure 10 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 8 moves under dehydration mode;
Figure 11 shows the flow chart of steps that is used to control the method for washing machine according to of the present invention; And
Figure 12 shows the coordinate diagram at the rotating speed of control rotor shown in Figure 11 and interior bucket.
The specific embodiment
In detail with reference to the preferred embodiments of the present invention, the example is shown in the drawings below.As possible, in all accompanying drawings, use the same reference numerals to represent same or analogous parts.
Drive unit of washing machine of the present invention is described below with reference to the accompanying drawings.
With reference to figure 1, the drive unit of washing machine comprises: bearing housing 11; Motor 12; Ring gear shaft 13; Reach 14; Driving shaft 15; Reduction gearing 16,17 and 18; And unidirectional fixation device 21 and 22.
Bearing housing 11 is fixed firmly on the outer bucket, and should have the interior bucket that is rotatably mounted in wherein by outer bucket 1.Bearing housing is fixed on the outer bucket by the fixture such as bolt.
Advise that this motor is induction motor or brushless motor.
Bearing housing 11 has the ring gear shaft 13 that is rotatably mounted in wherein.Ring gear shaft 13 passes outer bucket 1 and is connected to interior bucket (not shown), is used for driving power (driving power) is delivered to interior bucket.
As shown in Figure 1, if motor 12 is outer-rotor types, then driving shaft 15 just is connected on the outer rotor 12b.If motor 12 is inner-rotor types, then driving shaft 15 just is connected on the internal rotor.
Reduction gearing is installed between ring gear shaft 13 and the reach 14, is used to reduce the speed of ring gear shaft 13.
Reduction gearing comprises: sun gear 16, and it is formed on the external peripheral surface of driving shaft 15; Planetary gear 17, it is mounted to around sun gear 16 revolution and around himself axle rotation; And internal gear 18, it is formed on the inner circumferential surface of ring gear shaft 13, to mesh with described planetary gear.
Need suitably design the gear ratio of sun gear 16, planetary gear 17 and internal gear 18, obtain the speed reducing ratio of ring gear shaft 13.
Simultaneously, unidirectional fixation device is mounted to when driving shaft 15 during along the rotation of direction, this unidirectional fixation device is reach 14 fixedly, and when driving shaft 15 during along the rotation of another direction, and this unidirectional fixation device is two in reach 14, ring gear shaft 13 and the driving shaft 15 fixedly.
First embodiment of unidirectional fixation device is described below.
With reference to figure 1, first embodiment of unidirectional fixation device comprises: first unilateral bearing 21 between bearing housing 11 and reach 14 is used for only making reach 14 be fixed on bearing housing 11 at driving shaft 15 when a direction is rotated; And second unilateral bearing 22 between ring gear shaft 13 and reach 14, only be used at driving shaft 15 stationary annular gear shaft 13 and reach 14 during along another direction rotation.
With reference to figure 2A and Fig. 2 B, first unilateral bearing 21 and second unilateral bearing 22 all have a plurality of inner circumferential surface grooves distributed G along bearing race, rotatably place a ball B in each groove G.One side of groove has deep camber, and opposite side has small curve.
Therefore, shown in Fig. 2 A, if axle rotates along a direction, then ball B moves along the direction of deep camber, to fix this axle.On the other hand, shown in Fig. 2 B, if this axle rotates along another direction, then this ball B moves along the direction of small curve, to unclamp this axle.
A plurality of spring bearings 25 are installed on the external peripheral surface of ring gear shaft 13, are used for the two-way rotation of ring gear shaft 13.Described a plurality of spring bearing 25 is installed between ring gear shaft and outer bucket or the bearing housing.
In addition, between reach 14 and driving shaft 15, have spring bearing 26, be used for supporting and two-way rotating driveshaft 15.
The operation of the drive unit of using unidirectional fixation device first embodiment is described below.
With reference to figure 3A and Fig. 3 B, with the operation of describing when washing machine drive unit during at washing mode.In Fig. 3 A, " X " expression axle does not rotate, and in Fig. 3 B, " X " expression unilateral bearing 21 does not rotate.
When after washing process starts, giving motor 12 power supplies, by the effect generation driving force of stator 12a and rotor 12b.
If drive unit is used induction motor, then produce driving force by the faradic reciprocation that produces in electric current formed rotating excitation field in the stator coil and the rotor core.If this drive unit is used brushless motor, then produce driving force by the electromagnetic force of stator coil place generation and the magnet of rotor.
With reference to figure 3A, as rotor 12b during along the rotation of direction, driving shaft 15 is along a direction (clockwise direction) rotation (ω
Input).
In the case, reach 14 is fixed on the bearing housing 11 by first unilateral bearing 21.That is to say that shown in Fig. 2 A, the ball B in first unilateral bearing 21 is when the deep camber place moves, reach 14 is fixed into and can not rotates.
Simultaneously, owing to being mounted to, second unilateral bearing 22 makes that the fixed-direction of this second unilateral bearing 22 is opposite with the fixed-direction of first unilateral bearing 21, so ring gear shaft 13 is not fixed on the reach 14.That is to say, shown in Fig. 2 B, when the ball B of second unilateral bearing 22 when the small curve place of groove moves, ring gear shaft 13 just can rotate.
Under this state, rotate (ω along the direction (counterclockwise) opposite with the direction of rotation of driving shaft 15 with sun gear 16 planet gear meshed 17
Planet).In the case, because reach 14 is fixed on the bearing housing 11 by first unilateral bearing 21, so planetary gear is around sun gear 16 revolution, and only around himself axle rotation.
Because planetary gear 17 and 18 engagements of the internal gear on ring gear shaft 13, so ring gear shaft 13 is along direction (counterclockwise) rotation (ω identical with the direction of rotation of planetary gear 17
Annular).That is to say, shown in Fig. 3 A and Fig. 3 B, the direction of rotation (ω of motor 12 and driving shaft 15
Input) with the direction of rotation (ω of ring gear shaft 13
Annular) opposite.
According to the gear ratio of sun gear 16, planetary gear 17 and internal gear 18, reduce the rotating speed of ring gear shaft 13, and in view of the above, reduced the speed (ω of the interior bucket of the end that is connected to ring gear shaft 13 pro rata
Input＞ω
Annular).
Because the at a slow speed rotation of interior bucket in washing process makes torque higher relatively, thereby forms flowing of washings easily, so improved scourability.
Simultaneously, because the operation of drive unit is identical with the operation of drive unit in the washing process in rinse cycle, so will omit description to rinse cycle.
In case washing process or rinse cycle finish, and washings discharge, and then carry out dehydration.Below dehydration will be described.
With reference to figure 4A and Fig. 4 B, will the operation of drive unit when washing machine moves be described under dehydration mode.In Fig. 4 A, " X " expression axle does not rotate, and in Fig. 4 B, " X " expression unilateral bearing does not rotate.
When after starting dehydration, giving motor 12 power supplies, by the effect generation driving force of stator 12a and rotor 12b.
With reference to figure 4A, when rotor 12 rotated in the counterclockwise direction, driving shaft 15 rotated (ω in the counterclockwise direction
Input).
In the case, reach 14 unclamps from bearing housing 11 by first unilateral bearing 21.That is to say, shown in Fig. 2 B, when the ball B of first unilateral bearing 21 when the small curve place of groove G moves, reach 14 can rotate (ω
Carrying).
At this moment, owing to being installed into, second unilateral bearing 22 makes that the fixed-direction of this second unilateral bearing 22 is opposite with the fixed-direction of first unilateral bearing 21, so second unilateral bearing stationary annular gear shaft 13 and the reach 14.That is to say, when the ball B of second unilateral bearing when the deep camber place of groove G moves, ring gear shaft 13 is fixed into and can not rotates relatively with reach 14.
In the case, owing to sun gear 16 can not rotate relatively with planetary gear 17, so planetary gear 17 does not rotate (ω
Planet).In the case, planetary gear 17 is only around sun gear 16 revolution (ω
Carrying).
In view of the above, shown in Fig. 4 B, ring gear shaft 13 is with the speed (ω identical with driving shaft 15
Input=ω
Annular) and rotate along identical direction (that is counterclockwise).
Thus, in dehydration, when interior bucket dewatered, the clothing in the interior bucket was sloughed water by centrifugal action.
In aforementioned first embodiment, no matter the direction of rotation of rotor how (promptly along positive direction or in the other direction), always the direction of rotation of interior bucket is identical, and when rotor during along a direction rotation, interior barrel rotating speed reduces by reduction gearing.
Second embodiment of the drive unit of this washing machine is described below.Second embodiment has unidirectional fixation device, and its position is from the unidirectional fixation device variation of first embodiment and next.Therefore, only describe this feature of second embodiment, and identical Reference numeral is used to represent identical parts.
Fig. 5 shows the schematic diagram of second embodiment of the unidirectional fixation device of drive unit shown in Figure 1.Fig. 6 A and Fig. 6 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 5 moves under washing mode.Fig. 7 A and Fig. 7 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 5 moves under dehydration mode.
With reference to figure 5, this unidirectional fixation device comprises: first unilateral bearing 31 between bearing housing 11 and reach 14 is used for only making reach 14 be fixed on bearing housing 11 at driving shaft 15 when a direction is rotated; And second unilateral bearing 32 between reach 14 and driving shaft 15, only be used at driving shaft 15 fixedly reach 14 and driving shaft 15 during along another direction rotation.
On the external peripheral surface of ring gear shaft 13, a plurality of spring bearings 35 that are used for two-way rotary annular gear shaft 13 are installed.In addition, between ring gear shaft 13 and reach 14, have spring bearing 37, be used for supporting and two-way rotation reach 14.And, between reach 14 and driving shaft 15, also have spring bearing 36.
The operation of the drive unit of second embodiment that uses unidirectional fixation device is described below.At first, with reference to figure 6A and Fig. 6 B, the operation of washing machine drive unit when washing mode is described.
With reference to figure 6A, when giving motor 12 power supplies after starting washing process, along with the rotation of rotor 12b along a direction, driving shaft 15 is along a direction (for example, clockwise direction) rotation (ω
Input).
In the case, reach 14 is fixed on (ω on the bearing housing 11 by first unilateral bearing 31
Carrying).That is to say, shown in Fig. 2 A, when the ball B in first unilateral bearing when the deep camber place of groove G moves, reach 14 is fixed into and can not rotates.
Simultaneously, owing to being installed into, second unilateral bearing 32 makes that the fixed-direction of this second unilateral bearing 32 is opposite with the fixed-direction of first unilateral bearing 31, so driving shaft 15 is not fixed on the reach 14.That is to say, shown in Fig. 2 B, when the ball B of second unilateral bearing when the small curve place of groove G moves, driving shaft 15 can rotate.
Under this state, rotate (ω along the direction (that is counterclockwise) opposite with the direction of rotation of driving shaft with sun gear 16 planet gear meshed 17
Planet).In the case, owing to reach 14 is fixed on the bearing housing 11 by first unilateral bearing 31, so planetary gear 17 is around sun gear 16 revolution.
Because planetary gear 17 and 18 engagements of the internal gear on ring gear shaft 13, so ring gear shaft 13 is along direction (that is, the counterclockwise) rotation (ω identical with the direction of rotation of planetary gear 17
Annular).That is to say, shown in Fig. 6 A and Fig. 6 B, the direction of rotation (ω of motor 12
Input) with the direction of rotation (ω of ring gear shaft 13
Annular) be opposite.
Reduce the rotating speed of ring gear shaft 13 according to the gear ratio of sun gear 16, planetary gear 17 and internal gear 18, and in view of the above, reduce the speed (ω of the interior bucket of the end that is connected to ring gear shaft 13 pro rata
Input＞ω
Annular).
With reference to figure 7A and Fig. 7 B, the operation of drive unit when the description washing machine is moved under dehydration mode.
When giving motor 12 power supplies after starting dehydration, shown in Fig. 7 A, (that is, in the time of counterclockwise), driving shaft 15 is along this another direction rotation (that is counterclockwise) (ω along another direction rotation as rotor 12b
Input).
In the case, reach 14 unclamps from bearing housing 11 by first unilateral bearing 31.That is to say, shown in Fig. 2 B, when the ball B of first unilateral bearing when the small curve place of groove G moves, reach 14 can rotate (ω
Carrying).
Meanwhile, because second unilateral bearing 32 is installed into and makes that the fixed-direction of this second unilateral bearing 32 is opposite with the fixed-direction of first unilateral bearing 31, so second unilateral bearing fixedly reach 14 and driving shaft 15.That is to say, shown in Fig. 2 A, when the ball B of second unilateral bearing when the deep camber place of groove G moves, reach 14 is fixed into and can not rotates relatively with driving shaft 15.
Because sun gear 16 can not rotate relatively with planetary gear 17, planetary gear 17 can not rotate (ω
Planet).In the case, planetary gear 17 is only around sun gear 16 revolution (ω
Carrying).
In view of the above, shown in Fig. 7 B, ring gear shaft 13 is with the speed (ω identical with driving shaft 15
Input=ω
Annular) and rotate along identical direction (that is counterclockwise).As a result, under dehydration mode, interior bucket can dewater.
In aforementioned second embodiment, no matter the direction of rotation of rotor how (that is, along positive direction or in the other direction), always the direction of rotation of interior bucket is identical, and when rotor during along a direction rotation, interior barrel rotating speed reduces by reduction gearing.
The 3rd embodiment of the drive unit of this washing machine is described below with reference to Fig. 8 to Figure 10 B.The 3rd embodiment has unidirectional fixation device, and its position is from the unidirectional fixation device variation of first embodiment and next.Therefore, this feature of the 3rd embodiment will only be described, and identical Reference numeral is used to represent identical parts.
Fig. 8 shows the schematic diagram of the 3rd embodiment of the unidirectional fixation device of drive unit shown in Figure 1.Fig. 9 A and Fig. 9 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 8 moves under washing mode.Figure 10 A and Figure 10 B show the schematic diagram of the running status of drive unit when washing machine shown in Figure 8 moves under dehydration mode.
With reference to figure 8, this unidirectional fixation device comprises: first unilateral bearing 41 between bearing housing 11 and reach 14 is used for only making reach 14 be fixed on bearing housing 11 at driving shaft 15 when a direction is rotated; And second unilateral bearing 42 between ring gear shaft 13 and driving shaft 15, only be used at driving shaft 15 stationary annular gear shaft 13 and driving shaft 15 during along another direction rotation.
Driving shaft 15 has the end that places ring gear shaft 13, and second unilateral bearing 42 is arranged between the end and ring gear shaft 13 of driving shaft 15.
On the external peripheral surface of ring gear shaft 13, a plurality of spring bearings 45 are installed, be used for two-way rotary annular gear shaft 13.In addition, between ring gear shaft 13, reach 14 and driving shaft 15, have a plurality of spring bearings 46,47, be used for supporting and two-way rotary annular gear shaft 13 and reach 14.
The operation of the drive unit of the 3rd embodiment that adopts unidirectional fixation device will be described below.At first, with reference to figure 9A and Fig. 9 B, will the operation of washing machine drive unit when the washing mode be described.
With reference to figure 9A, when giving motor 12 power supplies after starting washing process, along with the rotation of rotor 12b along a direction, driving shaft 15 is along a direction (that is clockwise direction) rotation (ω
Input).
In the case, reach 14 is fixed on (ω on the bearing housing 11 by first unilateral bearing 41
Carrying).
Simultaneously, owing to being installed into, second unilateral bearing 42 makes that the fixed-direction of this second unilateral bearing 42 is opposite with the fixed-direction of first unilateral bearing 41, so driving shaft 15 is not fixed on the reach 14.
Under this state, rotate (ω along the direction (that is counterclockwise) opposite with the direction of rotation of driving shaft with sun gear 16 planet gear meshed 17
Planet).In the case, owing to reach 14 is fixed on the bearing housing 11 by first unilateral bearing 41, so planetary gear 17 is around sun gear 16 revolution.
Because planetary gear 17 and 18 engagements of the internal gear on ring gear shaft 13, so ring gear shaft 13 is along direction (that is, the counterclockwise) rotation (ω identical with the direction of rotation of planetary gear 17
Annular).That is to say, shown in Fig. 9 A and Fig. 9 B, the direction of rotation (ω of motor 12
Input) with the direction of rotation (ω of ring gear shaft 13
Annular) be opposite.
Reduce the rotating speed of ring gear shaft 13 according to the gear ratio of sun gear 16, planetary gear 17 and internal gear 18, and in view of the above, reduce the speed (ω of the interior bucket of the end that is connected to ring gear shaft 13 pro rata
Input＞ω
Annular).
With reference to figure 10A and Figure 10 B, the operation of drive unit when the description washing machine is moved under dehydration mode.
When giving motor 12 power supplies after starting dehydration, shown in Figure 10 A, as rotor 12b during along another direction rotation, driving shaft 15 rotates (that is counterclockwise) (ω along another direction
Input).
In the case, reach 14 unclamps from bearing housing 11 by first unilateral bearing 41, and rotation (ω
Carrying).
Meanwhile, owing to being installed into, second unilateral bearing 42 makes that the fixed-direction of this second unilateral bearing 42 is opposite with the fixed-direction of first unilateral bearing 41, so second unilateral bearing stationary annular gear shaft 13 and the driving shaft 15.
Because sun gear 16 and planetary gear 17 relative rotations, so planetary gear 17 rotation (ω
Planet).Because reach 14 is not fixed, so planetary gear 17 is along clockwise direction around sun gear 16 revolution (ω
Carrying).In the case, because driving shaft 15 and ring gear shaft 13 are fixing by second unilateral bearing 42, so although planetary gear 17 rotations and revolution, in fact this planetary gear can not be used as reduction gearing.
In view of the above, shown in Figure 10 B, ring gear shaft 13 is with the speed (ω identical with driving shaft 15
Input=ω
Annular) and rotate along identical direction (that is counterclockwise).Thus, under dehydration mode, interior bucket can dewater.
In aforementioned the 3rd embodiment, no matter the direction of rotation of rotor how (that is, along positive direction or in the other direction), always the direction of rotation of interior bucket is identical, and when rotor during along a direction rotation, interior barrel rotating speed reduces by reduction gearing.
Method below with reference to Figure 11 and the aforementioned washing machine of Figure 12 description control.Figure 11 shows the flow chart according to the step of the method that is used to control washing machine of the present invention, and Figure 12 shows the coordinate diagram at the rotating speed of described control procedure rotor of Figure 11 and interior bucket.
When starting washing process or rinse cycle, rotor rotates along a direction, so that interior bucket is along the direction rotation opposite with rotor.In view of the above, clothing is washed or rinsing.When finishing this washing process or rinse cycle, discharge washings, and carry out dehydration.
When starting the dehydration of washing machine, rotor rotates along a direction, so that interior bucket rotates (step S11 and S12) with the speed that reduces along the direction opposite with rotor.That is to say, as shown in figure 12, rotating speed (the curve D) (ω of bucket in the rotating speed of rotor (curve S) is higher than
1＞ω
2).
Thus, when the speed of interior bucket reduced by reduction gearing, the torque of rotor increased, so that bucket in the rotation easily.
In the case, preferably, interior bucket can be by the equally distributed speed rotation (ω among Figure 12 with clothing
2).For example, interior bucket can be with the speed rotation of about 80～200rpm.
The rotating speed of bucket in the quantity of the capacity of bucket and clothing is determined in needing to consider.For example, when the capacity of interior bucket increased, it is big that the diameter of interior bucket becomes, and need high relatively rotating speed so that clothing evenly distributes.On the contrary, when the capacity of interior bucket reduced, the diameter of interior bucket diminished, and low relatively rotating speed just is enough to clothing is evenly distributed.If the quantity of clothing is big, just need high rotating speed, if the quantity of clothing is little, then need the slow-speed of revolution.
Thus, clothing is evenly distributed by starting stage, prevented the vibrations of interior bucket, the impact noise of generation when the result has reduced outer bucket and interior bucket collision at washing process.
When interior bucket reaches desired speed (step S13), when promptly reaching the moment t2 among Figure 12, rotor stops (step S14) and rotor reversing (step S15).In the case, when slowing down, interior bucket is along the direction rotation (step S15) identical with the direction of rotation of rotor.That is to say that no matter the direction of rotation of motor how, interior bucket is all along identical direction rotation.
In the case, preferably, (step S14) (moment t3 among Figure 12) afterwards that stop at rotor, rotor reversing (step S15).
By reverse rotation rotor after rotating along a direction at rotor, bucket is rotated with high speed after being rotated with low speed in making, be known as " dynamic clutch (dynamic clutching) ".
With bucket in so dynamic clutch rotation, the torque that has improved rotor is even use miniature motor also can directly start dehydrating operations.
After dynamic clutch, rotor accelerates to normal dewatering speed, to remove the water (step S17) in the clothing.
In the case, interior barrel is accelerated to the predetermined rotating speed (ω among Figure 12
2), to carry out preliminary hydro-extraction.
Even in preliminary hydro-extraction, preferably, interior bucket is can make the equally distributed speed rotation of clothing.More preferably, interior bucket accelerates to by predefined phase and can make the equally distributed speed of clothing.
For example, bucket is after interior bucket reaches about 50～60rpm at first quickening, and interior bucket is accelerated the speed that reaches the about 80～200rpm that was used for for second period until interior bucket.In the boost phase of bucket be divided into more boost phase, make the speed of the more close about 200rpm of boost phase.
If the rotating speed of interior bucket reaches the rotating speed (step S16) in preliminary hydro-extraction stage, then interior bucket is accelerated to normal dewatering speed, to remove the water (step S17) in the clothing.
Thus, in quickening, distribute equably in the step of bucket clothing and carry out preliminary hydro-extraction after, interior bucket rotates with normal dewatering speed, to remove the water in the clothing.
As mentioned above, the method for washing machine of the present invention and this washing machine of control has following advantage.
At first, by along the rotor of the drive unit of this washing machine of positive direction/opposite spin and with at a high speed/ Bucket can save extra clutch in the low speed rotation. Accordingly, can construct simply this drive unit, And can reduce manufacturing cost.
The second, because the clutch that does not move with this drive unit etc., so this drive unit tool The mechanical noise that reduction is arranged, and because do not need the rotating speed control of motor, so this drive unit has The electrical noise that reduces.
The 3rd, by in reducing in the starting stage of dehydration barrel rotating speed so that foot is brought up in the torque of rotor So that interior bucket High Rotation Speed, thereby even use miniature motor, this washing methods also allows at the beginning of dehydration Stage beginning is directly rotated interior bucket. Accordingly, this washing methods allows directly to start dehydrating operations.
The 4th, when initial dehydration, the deceleration energy of interior bucket shortens for starting the normal required time of dehydration Section. The distribution clothing has saved the additional step that is used for the distribution clothing in interior bucket slows down the process of rotating, from And shortened whole dewatering time and reduced power consumption.
The 5th, the rotating speed of bucket in when initial dehydration, reducing, it makes the electric current of motor even, can fall Low electrical noise.
Claims (20)
1, a kind of drive unit that is used for washing machine comprises:
Bearing housing, it is fixed firmly on the outer bucket of this washing machine;
Motor, it is installed on the described bearing housing;
Ring gear shaft, it rotatably is installed on the described bearing housing, and described ring gear shaft is connected to the interior bucket of this washing machine;
Reach, it rotatably is installed on the described ring gear shaft;
Driving shaft, it rotatably is installed on the described reach, and described driving shaft is connected to described motor;
Reduction gearing, it is between described ring gear shaft and described reach, to reduce the rotating speed of described ring gear shaft; And
Unidirectional fixation device, it is at described driving shaft fixing described reach when first direction rotates, and fixes in described reach, described ring gear shaft and the described driving shaft two at described driving shaft when second direction rotate.
2, drive unit as claimed in claim 1, wherein said unidirectional fixation device comprises:
First unilateral bearing, it is between described bearing housing and described reach, and described first unilateral bearing only when described driving shaft during along the rotation of this first direction, is fixed to described reach on the described bearing housing; And
Second unilateral bearing, it is between described ring gear shaft and described reach, and described second unilateral bearing is only when described driving shaft during along the rotation of this second direction, fixing described ring gear shaft and described reach.
3, drive unit as claimed in claim 2, wherein this drive unit also comprises: be installed in the spring bearing on the external peripheral surface of described ring gear shaft, in order to the described ring gear shaft of two-way rotation; And the spring bearing between described reach and described driving shaft, in order to support and the described driving shaft of two-way rotation.
4, drive unit as claimed in claim 1, wherein said unidirectional fixation device comprises:
First unilateral bearing, it is between described bearing housing and described reach, and described first unilateral bearing only when described driving shaft during along the rotation of this first direction, is fixed to described reach on the described bearing housing; And
Second unilateral bearing, it is between described reach and described driving shaft, and described second unilateral bearing is only when described driving shaft during along the rotation of this second direction, fixing described reach and described driving shaft.
5, drive unit as claimed in claim 4, wherein this drive unit also comprises: be installed in the spring bearing on the external peripheral surface of described ring gear shaft, in order to the described ring gear shaft of two-way rotation; And a plurality of spring bearings between described ring gear shaft, described reach and described driving shaft, in order to support and the described reach of two-way rotation.
6, drive unit as claimed in claim 1, wherein said unidirectional fixation device comprises:
First unilateral bearing, it is between described bearing housing and described reach, and described first unilateral bearing only when described driving shaft during along the rotation of this first direction, is fixed to described reach on the described bearing housing; And
Second unilateral bearing, it is between described ring gear shaft and described driving shaft, and described second unilateral bearing is only when described driving shaft during along the rotation of this second direction, fixing described ring gear shaft and described driving shaft.
7, drive unit as claimed in claim 6, wherein said driving shaft has the end that is positioned at described ring gear shaft, and described second unilateral bearing is installed between described end and the described ring gear shaft.
8, drive unit as claimed in claim 6, wherein this drive unit also comprises: be installed in the spring bearing on the external peripheral surface of described ring gear shaft, in order to the described ring gear shaft of two-way rotation; And a plurality of spring bearings between described ring gear shaft, described reach and described driving shaft, in order to support respectively and the described ring gear shaft of two-way rotation, described reach and described driving shaft.
9, drive unit as claimed in claim 1, wherein said reduction gearing comprises:
Sun gear, it is formed on the external peripheral surface of described driving shaft;
Planetary gear, it is installed into the engagement of described sun gear and around described sun gear revolution, and around himself axle rotation; And
Internal gear, it is formed on the inner circumferential surface of described ring gear shaft, to mesh with described planetary gear.
10, a kind of method that is used at dehydration control washing machine comprises:
By making rotor along the direction rotation opposite with the direction of rotation of interior bucket, bucket rotates with first speed in this and make;
By changing the direction of rotation of this rotor, bucket rotates with the second speed that is higher than this first speed in this and make, thereby this rotor is rotated along the direction of rotation of being somebody's turn to do interior bucket; And
This rotor is rotated, to remove the water of the clothing that places this washing machine with dewatering speed.
11, method as claimed in claim 10, wherein this method also comprises: the direction of rotation that changes this rotor when bucket reaches a desired speed in this.
12, method as claimed in claim 10 wherein makes the step that bucket rotates with this first speed in this comprise: should interior bucket with the speed rotation that can make the even distribution clothing of bucket in this.
13, method as claimed in claim 10 wherein makes the step that bucket rotates with this first speed in this comprise: make barrel speed rotation with approximate 80～200rpm in this.
14, method as claimed in claim 10, wherein this method also comprises: this rotor stopped before the direction of rotation that changes this rotor.
15, method as claimed in claim 10 wherein makes this rotor comprise with the step of dewatering speed rotation:
This interior bucket is rotated with a predetermined speed; And
The rotating speed of bucket in this is accelerated to this dewatering speed.
16, method as claimed in claim 15, wherein this predetermined speed distributes clothing equably.
17, method as claimed in claim 15, wherein this method also comprises: reach this predetermined speed by bucket in quickening to be somebody's turn to do in the predetermined stage.
18, method as claimed in claim 15, the step of wherein quickening the rotating speed of bucket in this comprises: should in bucket accelerate to approximate 50～60rpm, then should in barrel accelerate to and to be similar to 80～200rpm.
19, a kind of method that is used to control washing machine comprises:
Carry out washing process, bucket rotates with first speed in wherein making by rotor;
Carry out rinse cycle, wherein make in this bucket with this first speed rotation by rotating this rotor; And
After having finished washing process and rinse cycle and having discharged washings, carry out dehydration, the step of wherein carrying out this dehydration comprises:
By make rotor along with this in the opposite direction of the direction of rotation rotation of bucket, and make this in barrel with
The second speed rotation;
By changing the direction of rotation of this rotor, and make in this bucket to be higher than the 3rd of this second speed
The speed rotation, thus make this rotor along the direction of rotation rotation of being somebody's turn to do interior bucket; And
This rotor is rotated, to remove the water that places the clothing in this washing machine with dewatering speed.
20, method as claimed in claim 19, wherein this method also comprises: the direction of rotation that changes this rotor when bucket in this reaches a desired speed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040055445 | 2004-07-16 | ||
| KR1020040055444A KR100606830B1 (en) | 2004-07-16 | 2004-07-16 | driving apparatus of washing machine |
| KR1020040055444 | 2004-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1721615A true CN1721615A (en) | 2006-01-18 |
Family
ID=35912199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100844059A Pending CN1721615A (en) | 2004-07-16 | 2005-07-15 | Driving unit for washing machine and method for controlling the same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100606830B1 (en) |
| CN (1) | CN1721615A (en) |
| ES (1) | ES2370827T3 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570714A (en) * | 2012-03-15 | 2012-07-11 | 金湖县华能机电有限公司 | Connecting mechanism for speed reducing box and motor of waterwheel type aerator |
| CN103173962A (en) * | 2011-12-22 | 2013-06-26 | 安徽聚隆传动科技股份有限公司 | One-way input and two-way output washing machine speed-reducing clutch |
| WO2013174084A1 (en) * | 2012-05-24 | 2013-11-28 | 常州至精精机有限公司 | Washing machine driver |
| CN105375682A (en) * | 2014-08-26 | 2016-03-02 | 青岛海尔洗衣机有限公司 | Dual-rotor direct drive motor |
| CN105579636A (en) * | 2013-10-02 | 2016-05-11 | 阿莫泰克有限公司 | Washing machine motor and washing machine comprising same |
| CN106283516A (en) * | 2015-05-18 | 2017-01-04 | 安徽聚隆传动科技股份有限公司 | A kind of locking device and clutch thereof and washing machine |
| CN107541908A (en) * | 2017-10-31 | 2018-01-05 | 沈阳工业大学 | A kind of push type spin dryer tube |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015009106A1 (en) * | 2013-07-19 | 2015-01-22 | 주식회사 아모텍 | Washing machine motor and washing machine comprising same |
| WO2015050397A1 (en) * | 2013-10-02 | 2015-04-09 | 주식회사 아모텍 | Washing machine motor and washing machine comprising same |
| KR101601167B1 (en) * | 2013-10-10 | 2016-03-10 | 주식회사 아모텍 | Driving Apparatus for Washing Machine, Washing Machine Using the Same and Driving Method thereof |
| KR101583655B1 (en) | 2014-04-30 | 2016-01-11 | 주식회사 아모텍 | Motor and washing machine having the same |
-
2004
- 2004-07-16 KR KR1020040055444A patent/KR100606830B1/en not_active IP Right Cessation
-
2005
- 2005-07-14 ES ES05015336T patent/ES2370827T3/en active Active
- 2005-07-15 CN CNA2005100844059A patent/CN1721615A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173962A (en) * | 2011-12-22 | 2013-06-26 | 安徽聚隆传动科技股份有限公司 | One-way input and two-way output washing machine speed-reducing clutch |
| CN103173962B (en) * | 2011-12-22 | 2016-06-29 | 安徽聚隆传动科技股份有限公司 | A kind of two-way output decelerating clutch of washing machine of unidirectional input |
| CN102570714A (en) * | 2012-03-15 | 2012-07-11 | 金湖县华能机电有限公司 | Connecting mechanism for speed reducing box and motor of waterwheel type aerator |
| WO2013174084A1 (en) * | 2012-05-24 | 2013-11-28 | 常州至精精机有限公司 | Washing machine driver |
| CN105579636A (en) * | 2013-10-02 | 2016-05-11 | 阿莫泰克有限公司 | Washing machine motor and washing machine comprising same |
| CN105579636B (en) * | 2013-10-02 | 2018-11-27 | 阿莫泰克有限公司 | Motor's for washing machine and washing machine with it |
| CN105375682A (en) * | 2014-08-26 | 2016-03-02 | 青岛海尔洗衣机有限公司 | Dual-rotor direct drive motor |
| CN105375682B (en) * | 2014-08-26 | 2020-01-21 | 青岛海尔洗衣机有限公司 | Double-rotor direct-drive motor |
| CN106283516A (en) * | 2015-05-18 | 2017-01-04 | 安徽聚隆传动科技股份有限公司 | A kind of locking device and clutch thereof and washing machine |
| CN106283516B (en) * | 2015-05-18 | 2019-08-30 | 安徽聚隆传动科技股份有限公司 | A kind of locking device and its clutch and washing machine |
| CN107541908A (en) * | 2017-10-31 | 2018-01-05 | 沈阳工业大学 | A kind of push type spin dryer tube |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100606830B1 (en) | 2006-08-01 |
| ES2370827T3 (en) | 2011-12-23 |
| KR20060006418A (en) | 2006-01-19 |
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