CN102005991B - Control device and drive method of washing machine motor, and washing machine - Google Patents
Control device and drive method of washing machine motor, and washing machine Download PDFInfo
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- CN102005991B CN102005991B CN 201010286598 CN201010286598A CN102005991B CN 102005991 B CN102005991 B CN 102005991B CN 201010286598 CN201010286598 CN 201010286598 CN 201010286598 A CN201010286598 A CN 201010286598A CN 102005991 B CN102005991 B CN 102005991B
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Abstract
The invention relates to a control device of a washing machine motor. The control device comprises a first controlled switch and a second controlled switch which are controlled by a central controller, a first winding and the first controlled switch are connected in series and are connected between an alternating current electric phase and a zero line to form a first power-supply return circuit; a second winding and the second controlled switch are connected in series and are connected between the alternating current electric phase and the zero line to form a second power-supply return circuit; the control device further comprises a third controlled switch which is controlled by a central processor and enables the second power-supply return circuit to be cut off from an alternating current electrical phase line in the designated working flow. The invention further relates to a washing machine motor control method and a washing machine thereof; by adopting the control device and drive method of washing machine motor, and washing machine the invention has the beneficial effects that controlled silicon which controls the reverse winding can be protected and has the small possibility of damage.
Description
Technical field
The present invention relates to the household electrical appliances control field, more particularly, relate to a kind of control device, driving method and washing machine thereof of motor for washer.
Background technology
Washing machine, especially rotary drum washing machine are a kind of household electrical appliance commonly used.Usually, the washing motor of rotary drum washing machine uses AC Induction Motors, and this AC Induction Motors has two windings of rotating, connects two windings by timesharing, makes the running of motor for washer positive and negative alternate, to reach the effect of washing.Washing machine control normal operation controllable silicon is controlled this two windings.But because alternating current machine itself, motor can produce the inverse electromotive force of several hectovolts in operation, and this inverse electromotive force directly is added on the controllable silicon, is easy to cause controllable silicon to damage.In rotary drum washing machine, if in the laundry workflow, above-mentioned rotating winding all will use, but, in the drying workflow of rotary drum washing machine, only need to use a winding, normally forward winding, like this, control the controllable silicon of reverse winding will bear inverse electromotive force in whole drying workflow impact.Long-time under the effect of inverse electromotive force, so that damaging chance, the silicon controlled of the reverse winding of above-mentioned control greatly increases.Common design is to adopt the RC absorption circuit to protect controllable silicon, but certain absorption can only be played to the signal of some high frequencies in the RC loop, and the inverse electromotive force that motor produces in the time of to normal use can't absorb.
Summary of the invention
The technical problem to be solved in the present invention is; control the more flimsy defective of controllable silicon of forward winding for the controllable silicon of the reverse winding of above-mentioned control of prior art, a kind of control device, driving method and washing machine thereof of protecting the silicon controlled motor for washer of the reverse winding of control is provided.
The technical solution adopted for the present invention to solve the technical problems is: the control device of constructing a kind of motor for washer, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, described control device comprises the first controlled switch and the second controlled switch that is subjected to central controller controls, be connected to alternating current mutually after the series connection of described the first winding and the first controlled switch, form the first current supply circuit between the zero line, be connected to alternating current mutually after the series connection of described the second winding and the second controlled switch, form the second current supply circuit between the zero line, also comprise controlled by central processing unit, the 3rd controlled switch that described the second current supply circuit is disconnected from described alternating current phase line.
In motor for washer control device of the present invention, described the 3rd controlled switch is connected between the alternating current phase line and the second controlled switch of described the second current supply circuit.
In motor for washer control device of the present invention, described the first controlled switch and the second controlled switch are controllable silicon, and described the 3rd controlled switch is relay.
In motor for washer control device of the present invention, described the first controlled switch and the second controlled switch comprise respectively control end and two switch terminals, and the control end of described the first controlled switch and the second controlled switch is electrically connected respectively the control signal output different from described central controller; Two switch terminals of described the first controlled switch are connected to described alternating current phase line and described the first winding one end, and described the first winding one end is connected on the described alternating current zero line; Two switch terminals of described the second controlled switch are connected to described alternating current phase line and described the second winding one end by described the 3rd controlled switch respectively, and described the second winding one end is connected on the described alternating current zero line.
In motor for washer control device of the present invention, described the 3rd controlled switch comprises two switch terminals and control coil, two switch terminal is connected on the switch terminal and alternating current phase line of described the second controlled switch, described control coil one end connects power supply, and the other end is electrically connected with the control signal output of described central controller.
In motor for washer control device of the present invention, be connected with respectively the RC series loop on two switch terminals of described the first controlled switch and the second controlled switch.
The invention still further relates to a kind of motor for washer control method, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, described control device comprises the first controlled switch and the second controlled switch that is subjected to central controller controls, be connected to alternating current mutually after the series connection of described the first winding and the first controlled switch, form the first current supply circuit between the zero line, be connected to alternating current mutually after the series connection of described the second winding and the second controlled switch, form the second current supply circuit between the zero line, described driving method comprises the steps:
A) confirm whether described washing machine is in the drying workflow, in this way, execution in step C); Otherwise, execution in step B);
B) control the 3rd controlled switch makes it keep described the second current supply circuit to be connected between described phase, the zero line;
C) control the 3rd controlled switch disconnects described the second current supply circuit and described phase line.
In motor for washer control method of the present invention, described the 3rd controlled switch is relay, by electric current is provided for its coil or does not provide the mode of electric current that its contact is kept connect or disconnect and then so that described the second current supply circuit be connected with described phase line or disconnect.
The invention still further relates to a kind of washing machine, comprise motor and motor control assembly, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, described control device comprises the first controlled switch and the second controlled switch that is subjected to central controller controls, be connected to alternating current mutually after the series connection of described the first winding and the first controlled switch, form the first current supply circuit between the zero line, be connected to alternating current mutually after the series connection of described the second winding and the second controlled switch, form the second current supply circuit between the zero line, also comprise controlled by central processing unit, the 3rd controlled switch that described the second current supply circuit is disconnected from described alternating current phase line.
Implement control device, driving method and the washing machine thereof of motor for washer of the present invention; has following beneficial effect: owing to increased by the 3rd controlled switch; and so that it is disconnected reverse winding and the controllable silicon of controlling reverse winding in the workflow of not using reverse winding by the alternating current phase line; so that above-mentioned reverse winding and control controlling of reverse winding and can not consist of the loop; thereby can not bear for a long time the inverse electromotive force that brings owing to the work of forward winding; so this controllable silicon of controlling reverse winding is protected, not fragile.
Description of drawings
Fig. 1 is the structural representation of the control device of motor for washer in the embodiment of the invention;
Fig. 2 is the electrical schematic diagram of the control device of motor for washer among the described embodiment;
Fig. 3 is driving method flow chart among the described embodiment.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, in the control device of embodiment of the invention motor for washer, this motor comprises motor forward winding 1 and motor reversal winding 2, and control device comprises the first controlled switch 3, the second controlled switch 4, the 3rd controlled switch 5 and central controller (not shown); One end of said motor forward winding 1 is connected with the alternating current zero line, the other end of motor forward winding 1 is connected with a switch terminal of the first controlled switch 3, another switch terminals of the first controlled switch 3 is connected with the alternating current phase line, and the control end of the first controlled switch 3 is electrically connected with the output of output first control signal of central controller.Like this, said motor forward winding 1 and the first controlled switch 3 just consist of the first current supply circuit, are the forward winding power supply of motor for washer; Above-mentioned the first controlled switch 3 is switched on or switched off under the effect from the first control signal of central controller, so that said motor forward winding 1 work or stop.Equally, one end of motor reversal winding 2 is connected with the alternating current zero line, the other end of motor reversal winding 2 is connected with a switch terminal of the second controlled switch 4, another switch terminals of the second controlled switch 4 is connected with a switch terminal of the 3rd controlled switch 5, and another switch terminal of the 3rd controlled switch 5 is connected with the alternating current phase line; The control end of the second controlled switch 4 is electrically connected with the output of the output of central controller the second control signal; The control end of the 3rd controlled switch 5 is electrically connected with the output of the output of central controller the 3rd control signal.Like this, above-mentioned counter-rotating winding 2, the second controlled switch 4, the 3rd controlled switch 5 just constitute the second current supply circuit of motor for washer counter-rotating winding power supply; When above-mentioned counter-rotating winding 2 work of needs, the 3rd control signal exported by central controller so that above-mentioned the 3rd controlled switch 5 keeps conducting, so that above-mentioned the second controlled switch 4 and motor reversal winding 2 are connected between alternating current phase line and the zero line; Central controller is exported the second control signal afterwards, controls the second controlled switch 4; In the workflow that does not need above-mentioned counter-rotating winding 2 work; for example dry in the workflow; central controller stops to export the 3rd control signal; above-mentioned the 3rd controlled switch 5 disconnects; so that above-mentioned the second controlled switch 4 and counter-rotating winding 2 are protected the second controlled switch 4 by disconnecting between the alternating current zero phase line.
In the present embodiment, above-mentioned the first controlled switch 3, the second controlled switch 4 are respectively controllable silicon, and these silicon controlled control ends are electrically connected on the different control signal output of central controller; In addition, in the present embodiment, also respectively and be connected to the RC absorption circuit of a series connection, this absorption circuit is used for absorbing the high-frequency noise that is superimposed upon on this controlled switch on two switch terminals of above-mentioned the first controlled switch 3 and the second controlled switch 4.Above-mentioned the 3rd controlled switch 5 is relay, and two contacts of this relay are connected on another switch terminal of alternating current phase line and above-mentioned the second controlled switch 4; Simultaneously, this relay coil one end connects power positive end, the other end is electrically connected with the 3rd signal output part of central controller, when the 3rd signal output part output low level of above-mentioned central controller, current flowing in the relay coil, its contact adhesive is connected to the second controlled switch 4 and the counter-rotating winding 2 of series connection between the phase, zero line of alternating current; When the 3rd signal output part of above-mentioned central controller was high-impedance state, no current flow through in the relay coil, and its contact is decontroled, with the second controlled switch 4 of series connection and counter-rotating winding 2 by disconnecting between the phase of alternating current, the zero line.
Fig. 2 is the electrical schematic diagram of motor control assembly in the present embodiment, and in Fig. 2, SCR1 is the first controlled switch 3, and resistance R 1, capacitor C 1 are the RC absorption circuits that is attempted by on its switch terminal; SZR2 is the second controlled switch 4, and resistance R 2, capacitor C 3 are the RC absorption circuits that are attempted by on its switch terminal; And relay shown in the K1 is the 3rd controlled switch 5.
Present embodiment has also disclosed a kind of washing machine, and this washing machine comprises motor and motor control assembly, and motor control assembly is exactly above-described motor control assembly.
Present embodiment has also disclosed a kind of control method of motor for washer, and the method is used for present embodiment motor control assembly recited above, and this Electric Machine Control flow process comprises the steps:
Is step S11 washing machine in the drying program? in this step, judge whether washing machine is in the drying workflow, in this way, then meaning does not need counter-rotating winding work in the motor, execution in step S11 in this workflow; As not being that then meaning needs the winding work of reversing, execution in step S13 in this workflow.
Step S12 does not export the 3rd control signal, the second controlled switch and phase line are disconnected: in this step, central controller is not exported the 3rd control signal, so that the disconnection of the 3rd controlled switch, and then so that the phase line disconnection of the second controlled switch of series connection and counter-rotating winding and alternating current.In present embodiment, exactly so that relay coil one end presents high-impedance state, so that do not have electric current to flow through in its coil.
Step S13 exports the 3rd control signal, the second controlled switch is connected: in this step with phase line, central controller is exported the 3rd control signal, so that the connection of the 3rd controlled switch, and then so that the phase line connection of the second controlled switch of series connection and counter-rotating winding and alternating current.In present embodiment, be exactly the central controller output of exporting the 3rd control signal be low level so that relay coil one end presents low level state, so that have electric current to flow through in its coil, so just so that the relay adhesive.
In the present embodiment, when above-mentioned steps is arranged on this washing machine workflow conversion as the part of motor for washer control method or workflow when beginning to carry out, as a kind of step of judgement.And the workflow of washing machine itself is roughly same as the prior art.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. the control device of a motor for washer, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, described control device comprises the first controlled switch and the second controlled switch that is subjected to central controller controls, be connected to alternating current mutually after the series connection of described the first winding and the first controlled switch, form the first current supply circuit between the zero line, be connected to alternating current mutually after the series connection of described the second winding and the second controlled switch, form the second current supply circuit between the zero line, it is characterized in that, also comprise being subjected to central controller controls, the 3rd controlled switch that described the second current supply circuit is disconnected from described alternating current phase line.
2. the control device of motor for washer according to claim 1 is characterized in that, described the 3rd controlled switch is connected between the alternating current phase line and the second controlled switch of described the second current supply circuit.
3. the control device of motor for washer according to claim 1 is characterized in that, described the first controlled switch and the second controlled switch are controllable silicon, and described the 3rd controlled switch is relay.
4. the control device of motor for washer according to claim 3, it is characterized in that, described the first controlled switch and the second controlled switch comprise respectively control end and two switch terminals, and the control end of described the first controlled switch and the second controlled switch is electrically connected on respectively the different control signal output of described central controller; Two switch terminals of described the first controlled switch are connected to described alternating current phase line and described the first winding one end, and the described first winding other end is connected on the described alternating current zero line; Two switch terminals of described the second controlled switch are connected to described alternating current phase line and described the second winding one end by described the 3rd controlled switch respectively, and the described second winding other end is connected on the described alternating current zero line.
5. the control device of motor for washer according to claim 4, it is characterized in that, described the 3rd controlled switch comprises two switch terminals and control coil, two switch terminal is connected on the switch terminal and alternating current phase line of described the second controlled switch, described control coil one end connects power supply, and the other end is electrically connected with the control signal output of described central controller.
6. the control device of the described motor for washer of any one is characterized in that according to claim 1-5, is connected with respectively the RC series loop on two switch terminals of described the first controlled switch and the second controlled switch.
7. the control method of a motor for washer, described motor for washer comprises the second winding that makes its first winding that is rotated in the forward and make its reverse rotation, control device comprises the first controlled switch and the second controlled switch that is subjected to central controller controls, be connected to after described the first winding and the series connection of the first controlled switch and form the first current supply circuit between alternating current phase, the zero line, be connected to after described the second winding and the series connection of the second controlled switch and form the second current supply circuit between alternating current phase, the zero line, it is characterized in that described control method comprises the steps:
A) confirm whether described washing machine is in the drying workflow, in this way, execution in step C); Otherwise, execution in step B);
B) control the 3rd controlled switch makes it keep described the second current supply circuit to be connected between described phase, the zero line;
C) control the 3rd controlled switch disconnects described the second current supply circuit and described phase line.
8. the control method of motor for washer according to claim 7, it is characterized in that, described the 3rd controlled switch is relay, by electric current is provided for its coil or does not provide the mode of electric current that its contact is kept connect or disconnect and then so that described the second current supply circuit be connected with described phase line or disconnect.
9. a washing machine comprises motor and motor control assembly, it is characterized in that, described motor control assembly is motor control assembly claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010286598 CN102005991B (en) | 2010-09-17 | 2010-09-17 | Control device and drive method of washing machine motor, and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010286598 CN102005991B (en) | 2010-09-17 | 2010-09-17 | Control device and drive method of washing machine motor, and washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN102005991A CN102005991A (en) | 2011-04-06 |
| CN102005991B true CN102005991B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010286598 Expired - Fee Related CN102005991B (en) | 2010-09-17 | 2010-09-17 | Control device and drive method of washing machine motor, and washing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591571A (en) * | 2014-11-17 | 2016-05-18 | 无锡飞翎电子有限公司 | Control circuit for rotation of motor and control method thereof, and clothes dryer |
| CN106812970B (en) * | 2017-03-20 | 2018-08-31 | 长沙理工大学 | A kind of open-shut control system of Drain Valve of Washing Machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200956560Y (en) * | 2006-08-29 | 2007-10-03 | 盛永富 | AC motor CW/CCW rotation control relay module |
| CN101499751A (en) * | 2008-01-31 | 2009-08-05 | 上海西门子医疗器械有限公司 | Positive and reverse rotation control circuit |
| CN201323541Y (en) * | 2008-12-04 | 2009-10-07 | 胡陆陆 | Control circuit for positive and negative switching of small-power alternating-current motor |
-
2010
- 2010-09-17 CN CN 201010286598 patent/CN102005991B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200956560Y (en) * | 2006-08-29 | 2007-10-03 | 盛永富 | AC motor CW/CCW rotation control relay module |
| CN101499751A (en) * | 2008-01-31 | 2009-08-05 | 上海西门子医疗器械有限公司 | Positive and reverse rotation control circuit |
| CN201323541Y (en) * | 2008-12-04 | 2009-10-07 | 胡陆陆 | Control circuit for positive and negative switching of small-power alternating-current motor |
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| CN102005991A (en) | 2011-04-06 |
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