CN104727083A - Control method and control device for electromagnetic clutch of washing machine - Google Patents

Control method and control device for electromagnetic clutch of washing machine Download PDF

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Publication number
CN104727083A
CN104727083A CN201310712344.0A CN201310712344A CN104727083A CN 104727083 A CN104727083 A CN 104727083A CN 201310712344 A CN201310712344 A CN 201310712344A CN 104727083 A CN104727083 A CN 104727083A
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China
Prior art keywords
clutch
adhesive
control
controller
voltage
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CN201310712344.0A
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Chinese (zh)
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CN104727083B (en
Inventor
刘军
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Anhui Julong Transmission Technology Co Ltd
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Anhui Julong Transmission Technology Co Ltd
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Priority to CN201310712344.0A priority Critical patent/CN104727083B/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30Driving arrangements 
    • D06F37/304Arrangements or adaptations of electric motors

Abstract

The invention provides a control method and a control device for an electromagnetic clutch of a washing machine. The control device comprises a detecting unit, a judging unit and an executing unit, wherein the detecting unit is used for detecting running conditions of the clutch, the judging unit is used for judging a water level to be high or low, and the executing unit is used for executing an action command given by a controller to enable different voltages to be supplied to the electromagnetic clutch and enable the electromagnetic clutch to generate electromagnetic force. The control method and the control device for the electromagnetic clutch of the washing machine have the advantages that the problems that one-way rotation is caused due to no attraction of the clutch in a continuous whole-program running process, or tap-tap noise is caused due to the fact that the clutch is not aligned into a groove in an aligning process and is aligned into the groove in a washing process or the clutch fails in a long-time continuous running process are solved, and the technical problem that the clutch fails in the long-time continuous running process is solved very well.

Description

A kind of washing machine electromagnetic clutch control method and control device
Technical field
The invention belongs to clutch field, relate in particular to a kind of washing machine electromagnetic clutch control method and control device.
Background technology
Speed-reducing clutch (abbreviation clutch) is the heart of automatic washing machine, is the critical component that washing of drum type washing machine and dehydration are changed mutually, can realize washing and dehydration two kinds of functions during work.Existing clutch usually because structural design on unreasonable, cause clutch in conjunction with time can not correctly enter in draw-in groove, make normally to carry out work, and along with after long washing process, because the coil temperature of electromagnetic clutch raises, cause the suction-combining force of electromagnetic clutch to decline, and then clutch was lost efficacy.
Summary of the invention
Impeller and the driving shaft of washing machine are connected, interior bucket and propeller shaft sleeve are connected, the prevailing operating state of washing machine is divided into washing operating mode and dehydration condition, when washing machine is in washing operating mode, solenoid is in electriferous state, clutch gear ring overcomes spring upward sliding under the magnetic effect of solenoid, clutch gear ring and ring gear are in disengaged position, now direct driving motor drives driving shaft to rotate, ring gear is driven to rotate while drive shaft impeller rotates, ring gear drives planetary gear rotation, planetary gear drives external toothing to rotate again, external toothing drives propeller shaft sleeve to rotate, due to by planetary transition, external toothing is contrary with the rotation direction of ring gear, make that driving shaft is relative with propeller shaft sleeve to be rotated backward, thus define the impeller of washing machine under a power source and the bidirectional rotation of interior bucket.
When washing machine is in dehydration condition, solenoid stops charged, clutch gear ring spring with slide downward under the effect of self gravitation, the gear shaping of clutch gear ring lower end inserts in the slot of slot dish, clutch gear ring and slot dish lock, namely lock with driving shaft, the meshing relation of the meshing relation of clutch gear ring and planetary gear retainer and planetary gear and ring gear, external toothing, make between ring gear and external toothing locked, driving shaft and driving shaft rotating in same direction, thus define the impeller of washing machine under a power source and the rotating Vortex of interior bucket.
And cause single direction rotation at clutch in continuous Whole Process running due to not adhesive, or owing to not looking for enter in groove at centering program clutch, and the tap-tap produced in groove is looked for when washing procedure.The inefficacy that clutch produces in long-time continuous running.
Thus, the invention provides a kind of control method of washing machine electromagnetic clutch, it solves clutch well in long-time continuous running, produces this technical problem that lost efficacy.
Scheme one, a kind of control method of washing machine electromagnetic clutch, the method comprises:
1) judge the step of washing machine predetermined water level in washing process, it is for judging whether slurry meets predetermined water level;
2) when slurry does not meet predetermined water level, controller by Clutch Control in disengaged position, namely under this disengaged position, clutch not adhesive, washing machine continue filling slurry;
3) when judging to arrive predetermined water level, controller is by Clutch Control at attracting state, and washing machine carries out Normal Wash;
4) while clutch adhesive, controller performs clutch adhesive capability evaluation and detects, and this step detects the size of the adhesive ability of clutch;
5) in time the suction-combining force of clutch being detected close to adhesive critical size, controller improves clutch voltage to the first and increases voltage, the magnetic force of clutch is increased, namely increases its suction-combining force, ensures clutch adhesive;
6) when controller is increased to the first increase voltage, the detecting unit of controller detects clutch dwell time simultaneously, when the non-dwell time of detection clutch, then represents working properly; If detect clutch to stop, and when the time exceedes the fixed time, then judge clutch not adhesive; Then perform the 7th) step;
7) controller improves clutch voltage to the second and increases voltage, shakes clutch simultaneously, makes its centering position of engagement, make the normal adhesive of clutch.
Further, also comprise step 8), voltage is risen to the 3rd and increases voltage by controller, guarantees the normal adhesive of clutch further.Its objective is that it can improve the reliability of clutch in order to the moment for needing larger electromagnetic force could meet adhesive condition.
Further, motor positive and inverse 10RPM is dithered as, positive and negative rotation time 40ms described in;
Further, the method comprises dehydration, after controller sends dehydration signal, and the near 0V of clutch voltage, and shake, electric machine rotation 10RPM, each 3S of rotating.
Further, judge the adhesive ability of clutch and whether be in stopping adhesive by adhesive sensor, this adhesive sensor carries out repeated detection incessantly within the time interval in succession.
In addition, the invention provides a kind of washing machine electromagnetic clutch control device, it can perform clutch control method, and this device comprises described controller, controls described electromagnetic clutch;
Its middle controller comprises with lower unit:
Detecting unit, for detecting clutch ruuning situation;
Judging unit, judges water level height;
Performance element, for the action command that implementation controller sends, makes to supply different voltage to electromagnetic clutch, to produce electromagnetic force.
Further, in order to improve the reliability of clutch work adhesive, structurally improve.Adopt the voltage changing electromagnetic clutch simultaneously, and then realize changing clutch the suction-combining force, it guarantees that clutch can normally work.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of clutch coupling of washing machine;
Fig. 2 is the clutch integrated pallet of prior art;
Fig. 3 is the clutch integrated pallet of improvement of the present invention;
Fig. 4 is the clutch shock absorbing ring of prior art;
Fig. 5 is the clutch shock absorbing ring of improvement of the present invention;
Fig. 6 is the design sketch after the shock absorbing ring loading clutch gear ring of prior art;
Fig. 7 is the design sketch after the shock absorbing ring loading clutch gear ring of improvement of the present invention;
Fig. 8 is that the clutch of prior art drives fluted disc;
Fig. 9 is that the clutch of improvement of the present invention drives fluted disc;
Figure 10 is electromagnetic clutch magnetic field schematic diagram.
Specific embodiment
With reference to the accompanying drawings, clutch involved in the present invention, control device, control method and experiment are described.
Washing machine involved in the present invention, it has electromagnetic clutch, see accompanying drawing 1, wherein the impeller of washing machine and driving shaft are connected, interior bucket and propeller shaft sleeve are connected, the prevailing operating state of washing machine is divided into washing operating mode and dehydration condition, when washing machine is in washing operating mode, solenoid is in electriferous state, clutch gear ring overcomes spring upward sliding under the magnetic effect of solenoid, clutch gear ring and ring gear are in disengaged position, now direct driving motor drives driving shaft to rotate, ring gear is driven to rotate while drive shaft impeller rotates, ring gear drives planetary gear rotation, planetary gear drives external toothing to rotate again, external toothing drives propeller shaft sleeve to rotate, due to by planetary transition, external toothing is contrary with the rotation direction of ring gear, make that driving shaft is relative with propeller shaft sleeve to be rotated backward, thus define the impeller of washing machine under a power source and the bidirectional rotation of interior bucket.
When washing machine is in dehydration condition, solenoid stops charged, clutch gear ring spring with slide downward under the effect of self gravitation, the gear shaping of clutch gear ring lower end inserts in the slot of slot dish, clutch gear ring and slot dish lock, namely lock with driving shaft, the meshing relation of the meshing relation of clutch gear ring and planetary gear retainer and planetary gear and ring gear, external toothing, make between ring gear and external toothing locked, driving shaft and driving shaft rotating in same direction, thus define the impeller of washing machine under a power source and the rotating Vortex of interior bucket.
In order to overcome noise, the present invention improves clutch pallet.See accompanying drawing 2, accompanying drawing 2 is the clutch pallet of prior art, and the profile of tooth contact area A of itself and clutch gear ring is less, and intensity is less.See accompanying drawing 3, accompanying drawing 3 is the pallet of improvement of the present invention, clutch gear ring in clutch pallet, center has profile of tooth connecting hole 1, it is circumferentially evenly arranged the radial trays tooth 2 towards center, and trays tooth 2 has the protuberance 3 protruded to the center of circle, and there is the contact surface B extended vertically upward protuberance 3 both sides, both sides contact surface is relative, forms groove 4 between the two.This design makes the profile of tooth contact surface of clutch gear ring become larger, more reliably, reduces the wearing and tearing produced because clashing into shock absorbing ring.
See accompanying drawing 4, accompanying drawing 4 is the shock absorbing ring of prior art, and phase clutch gear ring profile of tooth is less.See accompanying drawing 5, accompanying drawing 5 is clutch shock absorbing ring of the present invention, is circumferentially evenly formed with the shock absorbing ring matched in conjunction with tooth of clutch gear ring in conjunction with tooth 5 outside it.Clutch shock absorbing ring and clutch gear ring have the same center of circle, the number of trays tooth 2 equals the number of shock absorbing ring in conjunction with tooth 5, each shock absorbing ring has three projections down in conjunction with tooth 5, projection and both sides wherein convexed to form two grooves, whole second in conjunction with tooth " mountain " shape in handstand.That is the shock absorbing ring after improving injects profile of tooth and encases clutch gear ring profile of tooth.
The shock absorbing ring being prior art see accompanying drawing 6,7, Fig. 6 loads the design sketch after clutch gear ring; Fig. 7 is the design sketch after the shock absorbing ring loading clutch gear ring of improvement of the present invention;
See accompanying drawing 7, when assembling, shock absorbing ring matches in conjunction with tooth with clutch gear ring in conjunction with tooth.Shock absorbing ring is sleeved on two contact surfaces that upwards extend of clutch gear ring in conjunction with tooth in conjunction with tooth two grooves.
What after change, integrated pallet made the profile of tooth contact area of clutch gear ring become is larger, reducing to produce wearing and tearing because clashing into shock absorbing ring (working of plastics), adding the reliability of clutch, extending service life.
Further, the present invention improves driving-disc.
Higher see the accompanying drawing 8 existing driving gear flank of tooth, higher than the basal plane driving fluted disc, teeth groove is more shallow.
See accompanying drawing 9, driving gear disk center of the present invention cover has driving shaft 6, and have the basal plane 8 driving fluted disc, circumferentially there is multiple driving gear in outside, and driving gear is the tooth 7 of concavo-convex layout on excircle, and its concave tooth is form of grooves.The described driving fluted disc flank of tooth and basal plane are in same plane, and teeth groove is deepened simultaneously, and the field of conjugate action is increased.The degree of depth of teeth groove is preferably and drives 1/2 ~ 2/3 of fluted disc flank of tooth thickness, and preferably, reduction is of a size of 1mm, and the size of simultaneously deepening also is 1mm.
Accompanying drawing is 10 is conventional electromagnetic force computing formula;
Except structurally improving, can adopt simultaneously and experimentally changing clutch working condition, effectively reduce clutch and lost efficacy.Through producing and can knowing in use procedure, wherein when electromagnetic clutch is under long-time wash conditions, because solenoid temperature can constantly rise, make the resistance of solenoid increase, clutch the suction-combining force is reduced.
The control method of a kind of washing machine electromagnetic clutch provided by the invention, the method comprises:
1) judge the step of washing machine predetermined water level in washing process, it is for judging whether slurry meets predetermined water level;
2) when slurry does not meet predetermined water level, controller by Clutch Control in disengaged position, namely under this disengaged position, clutch not adhesive, washing machine continue filling slurry;
3) when judging to arrive predetermined water level, controller is by Clutch Control at attracting state, and washing machine carries out Normal Wash;
4) while clutch adhesive, controller performs clutch adhesive capability evaluation and detects, and this step detects the size of the adhesive ability of clutch;
5) in time the suction-combining force of clutch being detected close to adhesive critical size, controller improves clutch voltage to the first and increases voltage, the magnetic force of clutch is increased, namely increases its suction-combining force, ensures clutch adhesive;
6) when controller is increased to the first increase voltage, the detecting unit of controller detects clutch dwell time simultaneously, when the non-dwell time of detection clutch, then represents working properly; If detect clutch to stop, and when the time exceedes the fixed time, then judge clutch not adhesive; Then perform the 7th) step;
7) controller improves clutch voltage to the second and increases voltage, shakes clutch simultaneously, makes its centering position of engagement, make the normal adhesive of clutch.
Further, also comprise step 8), voltage is risen to the 3rd and increases voltage by controller, guarantees the normal adhesive of clutch further.Its objective is that it can improve the reliability of clutch in order to the moment for needing larger electromagnetic force could meet adhesive condition.
Further, motor positive and inverse 10RPM is dithered as, positive and negative rotation time 40ms described in;
Further, the method comprises dehydration, after controller sends dehydration signal, and the near 0V of clutch voltage, and shake, electric machine rotation 10RPM, each 3S of rotating.
Further, judge the adhesive ability of clutch and whether be in stopping adhesive by adhesive sensor, this adhesive sensor carries out repeated detection incessantly within the time interval in succession.
In addition, the invention provides a kind of washing machine electromagnetic clutch control device, it can perform clutch control method, and this device comprises described controller, controls described electromagnetic clutch;
Its middle controller comprises with lower unit:
Detecting unit, for detecting clutch ruuning situation;
Judging unit, judges water level height;
Performance element, for the action command that implementation controller sends, makes to supply different voltage to electromagnetic clutch, to produce electromagnetic force.
Further, in order to improve the reliability of clutch work adhesive, structurally improve.Adopt the voltage changing electromagnetic clutch simultaneously, and then realize changing clutch the suction-combining force, it guarantees that clutch can normally work.
Specifically, the present invention can adopt following control flow further
1. adhesive program
A point: first give DC90V voltage, shake 3S
B point: voltage rises to DC110V, shake 3S
C point: voltage rises to DC125, keeps 3S
D point: voltage is down to 90V, centering engaging tooth position.Electric machine rotation 15RPM, each 5S of left/right rotation
E point: voltage is pulled up to DC130V, motor, with 15RPM one-directional rotation 5S, starts Normal Wash program
F point: keep near 50V after 15S, and be retained to washing procedure and terminate
ABCDEF is time point.
2. dehydration procedure
After receiving host computer dehydration signal, voltage is down to 0V, and shakes 2S
Electric machine rotation 15RPM, each 3S of positive and negative rotation
Terminate after centering to stop, waiting for that host computer sends out dehydration rotate instruction.
3. shake program
Motor positive and inverse moves 10RPM, positive and negative rotation time 40ms.
Based on the washing machine of clutch of the present invention, in order to control clutch mechanism better, present invention also offers clutch coupling of washing machine adhesive control device.
For clutch not adhesive, only meeting short time single direction rotation, be unlikely to water and throw away outside bucket, clutch adhesive control device of the present invention, can guarantee that washing machine normally uses.
Washing machine has clutch adhesive control device, includes:
Controller, controls the whole adhesive of clutch;
Its middle controller comprises with lower unit:
Detecting unit, after clutch adhesive action completes, detects clutch attracting state, and detecting unit detects dwell time or commutating period;
Identifying unit, detect meet be greater than condition more than 500ms of 1s or commutating period when dwell time time, the non-adhesive of judgement clutch;
Performance element, for the action command that implementation controller sends, makes to supply different voltage to electromagnetic clutch, to produce electromagnetic force.
And adopt the control method of this control device to be:
The method comprises:
Detecting step, after clutch adhesive action completes, detects clutch attracting state, and detecting unit detects dwell time or commutating period;
Determination step, detect meet be greater than condition more than 500ms of 1s or commutating period when dwell time time, the non-adhesive of judgement clutch;
Perform step, for the action command that implementation controller sends, make to supply different voltage to electromagnetic clutch, to produce electromagnetic force.
And result of determination is transferred to controller by identifying unit,
If judge the non-adhesive of clutch, controller sends action command again, carries out protecting action again;
If four times judge all non-adhesive, controller sends and increases voltage instruction;
After increasing voltage, controller sends clutch adhesive action command;
Detecting unit, identifying unit, proceed to detect determination step; If still adhesive effect can not be completed, then continue to increase voltage, until Clutch Control adhesive.
Preferably, each amplitude increasing voltage is 20V.
The foregoing is only preferred embodiment of the present invention, be not used for limiting scope of the invention process, all equal changes of doing according to the scope of the claims of the present invention and modification, all fall into the scope that patent of the present invention contains.

Claims (6)

1. a control method for washing machine electromagnetic clutch, is characterized in that, the method comprises:
1) judge the step of washing machine predetermined water level in washing process, it is for judging whether slurry meets predetermined water level;
2) when slurry does not meet predetermined water level, controller by Clutch Control in disengaged position, namely under this disengaged position, clutch not adhesive, washing machine continue filling slurry;
3) when judging to arrive predetermined water level, controller is by Clutch Control at attracting state, and washing machine carries out Normal Wash;
4) while clutch adhesive, controller performs clutch adhesive capability evaluation and detects, and this step detects the size of the adhesive ability of clutch;
5) in time the suction-combining force of clutch being detected close to adhesive critical size, controller improves clutch voltage to the first and increases voltage, the magnetic force of clutch is increased, namely increases its suction-combining force, ensures clutch adhesive;
6) when controller is increased to the first increase voltage, the detecting unit of controller detects clutch dwell time simultaneously, when the non-dwell time of detection clutch, then represents working properly; If detect clutch to stop, and when the time exceedes the fixed time, then judge clutch not adhesive; Then perform the 7th) step;
7) controller improves clutch voltage to the second and increases voltage, shakes clutch simultaneously, makes its centering position of engagement, make the normal adhesive of clutch.
2. control method as claimed in claim 1, is characterized in that, also comprise step 8), and voltage is risen to the 3rd and increases voltage by controller, guarantees the normal adhesive of clutch further.
3. control method as claimed in claim 1 or 2, is characterized in that, described in be dithered as motor positive and inverse 10RPM, positive and negative rotation time 40ms.
4. the control method as described in one of claim 1-3, is characterized in that, the method comprises dehydration, after controller sends dehydration signal, and the near 0V of clutch voltage, and shake, electric machine rotation 10RPM, each 3S of rotating.
5. the control method as described in aforementioned any one claim, is characterized in that, judges the adhesive ability of clutch and whether be in stopping adhesive by adhesive sensor, and this adhesive sensor carries out repeated detection incessantly within the time interval in succession.
6. a washing machine electromagnetic clutch control device, it enforcement of rights can require described in any one of 1-5 control method, it is characterized in that: described controller, controls described electromagnetic clutch;
Its middle controller comprises with lower unit:
Detecting unit, for detecting clutch ruuning situation;
Judging unit, judges water level height;
Performance element, for the action command that implementation controller sends, makes to supply different voltage to electromagnetic clutch, to produce electromagnetic force.
CN201310712344.0A 2013-12-23 2013-12-23 A kind of washing machine electromagnetic clutch control method and control device Active CN104727083B (en)

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CN201310712344.0A CN104727083B (en) 2013-12-23 2013-12-23 A kind of washing machine electromagnetic clutch control method and control device

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Application Number Priority Date Filing Date Title
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CN104727083B CN104727083B (en) 2018-07-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106592163A (en) * 2015-10-15 2017-04-26 合肥海尔洗衣机有限公司 Washing machine speed reducing clutch control method, speed reducing clutch and washing machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85200428U (en) * 1985-04-01 1985-12-20 万昭志 Saving energy electromagnet
US4855913A (en) * 1987-05-29 1989-08-08 J. I. Case Company Electronic control system for powershift transmission
JPH04126192A (en) * 1990-09-17 1992-04-27 Hitachi Ltd Full automatic washing machine and full automatic washing and drying machine
CN1146610A (en) * 1995-09-26 1997-04-02 张一平 Magnetic force clutch
JP2007061266A (en) * 2005-08-30 2007-03-15 Toshiba Corp Drain valve motor unit of washing-cum-spin-drying machine
CN201001097Y (en) * 2006-11-14 2008-01-02 广德县康利电器有限公司 Controller for electromagnetic brake or clutch
CN102206913A (en) * 2011-05-18 2011-10-05 常州至精精机有限公司 Transmission device of washing machine
CN103422323A (en) * 2012-05-23 2013-12-04 常州至精精机有限公司 Drive assembly of pulsator washing machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85200428U (en) * 1985-04-01 1985-12-20 万昭志 Saving energy electromagnet
US4855913A (en) * 1987-05-29 1989-08-08 J. I. Case Company Electronic control system for powershift transmission
JPH04126192A (en) * 1990-09-17 1992-04-27 Hitachi Ltd Full automatic washing machine and full automatic washing and drying machine
CN1146610A (en) * 1995-09-26 1997-04-02 张一平 Magnetic force clutch
JP2007061266A (en) * 2005-08-30 2007-03-15 Toshiba Corp Drain valve motor unit of washing-cum-spin-drying machine
CN201001097Y (en) * 2006-11-14 2008-01-02 广德县康利电器有限公司 Controller for electromagnetic brake or clutch
CN102206913A (en) * 2011-05-18 2011-10-05 常州至精精机有限公司 Transmission device of washing machine
CN103422323A (en) * 2012-05-23 2013-12-04 常州至精精机有限公司 Drive assembly of pulsator washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106592163A (en) * 2015-10-15 2017-04-26 合肥海尔洗衣机有限公司 Washing machine speed reducing clutch control method, speed reducing clutch and washing machine

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