CN207017026U - A kind of control circuit of the washing machine based on series excited machine - Google Patents
A kind of control circuit of the washing machine based on series excited machine Download PDFInfo
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- CN207017026U CN207017026U CN201720896095.9U CN201720896095U CN207017026U CN 207017026 U CN207017026 U CN 207017026U CN 201720896095 U CN201720896095 U CN 201720896095U CN 207017026 U CN207017026 U CN 207017026U
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Abstract
The utility model discloses a kind of control circuit of the washing machine based on series excited machine, it is related to control field, the circuit includes：MCU, door lock control circuits and circuit for controlling motor, door lock control circuits include PTC components and door interlock switch, and PTC components are used to control door interlock switch；Circuit for controlling motor includes series excited machine, directional relay and the controllable silicon being sequentially connected in series, and series excited machine includes the rotor and motor stator of series connection, MCU closures relay and controllable silicon；One end of PTC components and door interlock switch connects L lines, the other end closure relay of door interlock switch, the other end connection rotor of PTC components and the common port of motor stator, the other end connection N lines of controllable silicon respectively；The motor stator of PTC components and series excited machine is cascaded by the utility model, and PTC door locks are uniformly controlled by being multiplexed the controllable silicon of driving series excited machine, improve the integrated level of circuit.
Description
Technical field
It the utility model is related to control field, especially a kind of control circuit of the washing machine based on series excited machine.
Background technology
In order to ensure the security performance of roller washing machine, roller washing machine needs to pin door lock in the course of the work, makes it
It can not be opened, therefore include door lock control circuits in the control circuit of washing machine, current roller washing machine mostly uses
PTC door locks, namely door lock control circuits include PTC components and door interlock switch, and door interlock switch is controlled by PTC components, when
PTC components pin door interlock switch when obtaining electric, the door lock of washing machine can not be opened, when PTC component dead electricity, door interlock switch not by
Pin, can be with freely openable.
But the technology of current control PTC door locks, mainly realized by extra controllable silicon and relay, Ye Ji
The control unit such as controllable silicon and relay is set to drive PTC components in door lock control circuits, and these increased control units
Substantial amounts of pcb board space can be occupied, increases cost.
Utility model content
The present inventor is regarding to the issue above and technical need, it is proposed that a kind of washing machine control electricity based on series excited machine
Road, circuit provided by the utility model, the controllable silicon in circuit for controlling motor is multiplexed, makes it to series excited machine and PTC
Door lock is uniformly controlled, and improves the integrated level of washing machine circuit.
The technical solution of the utility model is as follows：
A kind of control circuit of the washing machine based on series excited machine, the circuit include MCU, door lock control circuits and motor control
Circuit, the input connection L lines of door lock control circuits, the of the first output end connection circuit for controlling motor of door lock control circuits
One input, the second input of the second output end connection circuit for controlling motor of door lock control circuits, circuit for controlling motor
Output end connects N lines；
Door lock control circuits include PTC components and door interlock switch, and PTC components are used to control door interlock switch to be in locking-in state
Or active state, one end of PTC components and door interlock switch connect the input of door lock control circuits respectively, door interlock switch it is another
First output end of end connection door lock control circuits, the second output end of the other end connection door lock control circuits of PTC components；Electricity
Machine control circuit includes series excited machine, directional relay and controllable silicon, and controllable silicon and directional relay is electrically connected in MCU
Control terminal, series excited machine include the rotor and motor stator being serially connected, the other end closure relay of rotor
Device, the other end connection controllable silicon of motor stator, the first input end of the other end connection circuit for controlling motor of directional relay,
The common port connection motor control of the output end of the other end connection circuit for controlling motor of controllable silicon, rotor and motor stator
Second input of circuit.
Its further technical scheme is that directional relay includes first direction relay and second direction relay, the
One directional relay and second direction relay are single-pole double-throw relay, first direction relay and second direction relay
Include a fixing end, a normally-closed contact and a normally opened contact respectively, MCU be electrically connected first direction relay and
The control terminal of second direction relay；
First input end, the normally opened contact connection motor of the normally-closed contact connection circuit for controlling motor of first direction relay
Second input of control circuit, the first end of fixing end connection rotor；The normally-closed contact connection of second direction relay
The first input end of circuit for controlling motor, the second input of normally opened contact connection circuit for controlling motor, fixing end connection motor
Second end of rotor.
Advantageous effects of the present utility model are：
Control circuit of the washing machine disclosed in the utility model, PTC doors are controlled without using extra controllable silicon and relay
Lock, but the motor stator of PTC components and series excited machine is cascaded, driven by being multiplexed the controllable silicon of series excited machine come
PTC door locks are uniformly controlled, no matter whether series excited machine works, controllable silicon can stablize to PTC assembly power supplies so as to
Door interlock switch is pinned, on the premise of meeting the requirement of washing machine control reliability and ensureing security performance, improves circuit
Integrated level, pcb board space is reduced, reduces cost.Circuit versatility disclosed in other the utility model is stronger, can be applicable
In the washing machine of any a PTC door locks based on series excited machine.
Brief description of the drawings
Fig. 1 is the structural representation of the control circuit of the washing machine based on series excited machine disclosed in the utility model.
Fig. 2 is the circuit diagram of the control circuit of the washing machine based on series excited machine disclosed in the utility model.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Fig. 1 is refer to, it illustrates the structure of the control circuit of the washing machine based on series excited machine disclosed in the utility model
Schematic diagram, the circuit include MCU (Microcontroller Unit, micro-control unit), door lock control circuits and motor control
Circuit, the input connection L lines (live wire) of door lock control circuits, the first output end connection motor control electricity of door lock control circuits
The first input end on road, the second input of the second output end connection circuit for controlling motor of door lock control circuits, motor control
The output end connection N lines (zero line) of circuit.
Wherein, door lock control circuits include PTC (Positive Temperature Coefficient, positive temperature coefficient)
Component and door interlock switch K0, PTC component are used to control door interlock switch K0 to be in locking-in state or active state, in door interlock switch K0
Under closure state, when PTC components obtain electric, door interlock switch K0 is in locking-in state, and now the door lock of washing machine can not be opened, when
During PTC component dead electricity, door interlock switch K0 is active, and now the door lock of washing machine can be with freely openable.PTC components and door
Lock-switch K0 one end connects the input of door lock control circuits, door interlock switch K0 other end connection door lock control circuits respectively
The first output end, PTC components the other end connection door lock control circuits the second output end.
Circuit for controlling motor includes series excited machine, directional relay and controllable silicon TY3, MCU and controllable silicon is electrically connected
TY3 and directional relay control terminal, MCU can adjust the controllable silicon TY3 angle of flow, and series excited machine includes the electricity being serially connected
Machine rotor M and motor stator L, rotor M other end closure relay, motor stator L other end connection are controllable
Silicon TY3, the first input end of the other end connection circuit for controlling motor of directional relay, controllable silicon TY3 other end connection electricity
Second input of the common port connection circuit for controlling motor of the output end of machine control circuit, rotor and motor stator.
As shown in Fig. 2 optional, directional relay includes first direction relay K1 and second direction relay K2, the
One directional relay K1 and second direction relay K2 is single-pole double-throw relay, first direction relay K1 and second direction
Relay K2 includes a fixing end, a normally-closed contact and a normally opened contact respectively, by default, first direction after
The electrical equipment K1 and second direction relay K2 equal adhesive of normally-closed contact, normally opened contact disconnect, i.e., state as shown in Figure 2, MCU
It is electrically connected first direction relay K1 and second direction relay K2 control terminal, MCU and first party not shown in Fig. 2
The schematic diagram being connected to relay K1 with second direction relay K2.
First input end, the normally opened contact of first direction relay K1 normally-closed contact K1-a connection circuit for controlling motor
Second input of K1-b connection circuit for controlling motor, fixing end connection rotor M first end；Second direction relay K2
Normally-closed contact K2-a connection circuit for controlling motor first input end, the second of normally opened contact K2-b connection circuit for controlling motor
Second end of input, fixing end connection rotor M.
It should be noted that being related to specific circuit structure, circuit disclosed in the utility model has numerous embodiments,
Fig. 2 is only an exemplary embodiment, and generally also includes drive circuit and bleeder circuit etc. when actually realizing in the circuit
Common circuit, the utility model are not repeated this.
Control circuit of the washing machine disclosed in the present application based on series excited machine operation principle it is as follows, its step is held by MCU
OK：
Step 1, when door interlock switch K0 is closed, door lock lock instruction is received, door lock lock instruction is used to indicate to pin to be somebody's turn to do
Door interlock switch K0.
Step 2, the working condition of series excited machine is determined, working condition is startup work or is stopped.
Step 3, when the working condition of series excited machine is is stopped, control direction relay is off,
It is specially control first direction relay K1 normally-closed contact K1-a and second direction relay K2 normally-closed contact in Fig. 2
The normally-closed contact K2-b of K2-a adhesives, first direction relay K1 normally opened contact K1-b and second direction relay K2 breaks
Open, namely as shown in Fig. 2 now rotor M is short-circuited pinning, no electric current flows through on rotor M.In order to ensure controlling
During door interlock switch K0 processed, directional relay checks the state of directional relay control terminal in off-state, therefore MCU moment, when
When the control terminal of directional relay is low level, represent that directional relay is off, when the control terminal of directional relay
For high level when, represent directional relay be in closure state, in addition in view of relay adhesive disconnection has certain prolong
When, and whether MCU can not the adhesive disconnection, therefore further it is determined that the control terminal of directional relay of accurate judgement relay
For low level and when reaching scheduled duration, determine that directional relay reliably disconnects, scheduled duration is default time value, can
To be 600ms.
In existing circuit for controlling motor, when series excited machine is stopped, the controllable silicon TY3 in circuit for controlling motor
Not open-minded, in the utility model, MCU opens the controllable silicon TY3 in circuit for controlling motor so that N lines are turned on, while MCU is controlled
The angle of flow of controllable silicon processed is 40 degree of -50 degree, for example it is 45 degree to set the angle of flow, to ensure having enough drive current through
PTC components.Now electric current flows into from L lines, flows into N lines after PTC components, motor stator L and controllable silicon TY3 successively, namely
Realize and remain to by circuit for controlling motor be PTC assembly power supplies under the idle state of series excited machine, due to have electric current from
PTC components flow through, and PTC components control door interlock switch K0 when obtaining electric is in locking-in state, and door interlock switch K0 can not be opened.
In the utility model, when series excited machine does not work, using the controllable silicon TY3 in circuit for controlling motor come for
PTC assembly power supplies, it can be seen from the electric current transmission direction as above stated under the idle state of series excited machine, electricity
Machine stator L is also in "on" position, can so cause the unnecessary temperature rises of motor stator L, and can make during motor electronic L overheats
Series excited machine can not work on, and influence the normal operation of washing machine, therefore in order to reduce motor stator L invalid temperature rise, fill
Divide the characteristics of utilizing PTC components：When PTC component dead electricity, when PTC components will not immediately cool down but need certain cooling
Between, after PTC components cool down completely, door interlock switch K0 switches back into active state from locking-in state, therefore MCU is at predetermined time intervals
Controllable silicon TY3 is opened at interval, and the predetermined time interval is related to the cool time of PTC components, the experience usually pre-set
Value, for example could be arranged to open controllable silicon TY3 every 1s, then within the time for not opening controllable silicon TY3, not to motor stator
L is powered while PTC components still not yet cool down, and door interlock switch K0 can be kept to be in locking-in state, motor is greatly reduced and determine
Sub- L invalid temperature rise.
Step 4, when series excited machine working condition for start work when, controllable silicon TY3 is open-minded all the time, control direction after
Electrical equipment is in closure state, rotor M and motor stator L UNICOMs, is specially control first direction relay K1 in fig. 2
Normally-closed contact K1-a adhesives, second direction relay K2 normally opened contact K2-b adhesives；Or control first direction relay K1
Normally opened contact K1-b adhesives, second direction relay K2 normally-closed contact K2-a adhesives.
The normally opened contact K2-b of normally-closed contact K1-a adhesives, second direction relay K2 as first direction relay K1 inhales
During conjunction, electric current flows into from L lines, successively the door interlock switch K0 by closure, first direction relay K1 normally-closed contact K1-a, electricity
N lines, series excitation electricity are flowed into after machine rotor, second direction relay K2 normally opened contact K2-b, motor stator L and controllable silicon TY3
Machine starts operating working properly, and now the rotor M sense of current is identical with the motor stator L sense of current, series excitation electricity
Machine rotates forward.
The normally-closed contact K2-a of normally opened contact K1-b adhesives, second direction relay K2 as first direction relay K1 inhales
During conjunction, electric current flows into from L lines, successively the door interlock switch K0 by closure, second direction relay K2 normally-closed contact K2-a, electricity
N lines, series excitation electricity are flowed into after machine rotor M, first direction relay K1 normally opened contact K1-b, motor stator L and controllable silicon TY3
Machine starts operating working properly, and now the rotor M sense of current with the motor stator L sense of current on the contrary, series excitation is electric
Machine inverts.
It can thus be seen that when series excited machine rotates, either motor rotates forward or motor reversal, controllable silicon TY3 begin
Open work eventually, now due to the design of circuit, have reliable drive current through on PTC components all the time and all the time it is electric, from
And controlling door interlock switch K0 to be in locking-in state can not be opened.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
To understand, what those skilled in the art directly exported or associated on the premise of spirit of the present utility model and design is not departed from
Oher improvements and changes, it is considered as being included within the scope of protection of the utility model.
Claims (2)
- A kind of 1. control circuit of the washing machine based on series excited machine, it is characterised in that the circuit include microprocessing unit MCU, Door lock control circuits and circuit for controlling motor, the input connection L lines of the door lock control circuits, the door lock control circuits First output end connects the first input end of the circuit for controlling motor, the second output end connection institute of the door lock control circuits State the second input of circuit for controlling motor, the output end connection N lines of the circuit for controlling motor；The door lock control circuits include positive temperature coefficient PTC components and door interlock switch, and the PTC components are used to control the door Lock-switch is in locking-in state or active state, and one end of the PTC components and the door interlock switch connects the door lock respectively The input of control circuit, the other end of the door interlock switch connect the first output end of the door lock control circuits, the PTC The other end of component connects the second output end of the door lock control circuits；The circuit for controlling motor includes series excited machine, side To relay and controllable silicon, the control terminal of the controllable silicon and the directional relay, the string is electrically connected in the MCU Swash rotor and motor stator that motor includes being serially connected, the other end of the rotor connects the direction relay Device, the other end of the motor stator connect the controllable silicon, and the other end of the directional relay connects the motor control The first input end of circuit, the other end of the controllable silicon connect the output end of the circuit for controlling motor, the rotor The second input of the circuit for controlling motor is connected with the common port of the motor stator.
- 2. circuit according to claim 1, it is characterised in that the directional relay includes first direction relay and the Two directional relays, the first direction relay and the second direction relay are single-pole double-throw relay, and described It is normally opened tactile that one directional relay and the second direction relay include a fixing end, a normally-closed contact and one respectively The control terminal of the first direction relay and the second direction relay is electrically connected in point, the MCU；The normally-closed contact of the first direction relay connects the first input end of the circuit for controlling motor, normally opened contact connection Second input of the circuit for controlling motor, fixing end connect the first end of the rotor；The second direction relay The normally-closed contact of device connects the first input end of the circuit for controlling motor, normally opened contact connects the of the circuit for controlling motor Two inputs, fixing end connect the second end of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896095.9U CN207017026U (en) | 2017-07-21 | 2017-07-21 | A kind of control circuit of the washing machine based on series excited machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720896095.9U CN207017026U (en) | 2017-07-21 | 2017-07-21 | A kind of control circuit of the washing machine based on series excited machine |
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| Publication Number | Publication Date |
|---|---|
| CN207017026U true CN207017026U (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720896095.9U Active CN207017026U (en) | 2017-07-21 | 2017-07-21 | A kind of control circuit of the washing machine based on series excited machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190467A (en) * | 2017-07-21 | 2017-09-22 | 无锡和晶信息技术有限公司 | A kind of control circuit of the washing machine and method based on series excited machine |
-
2017
- 2017-07-21 CN CN201720896095.9U patent/CN207017026U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190467A (en) * | 2017-07-21 | 2017-09-22 | 无锡和晶信息技术有限公司 | A kind of control circuit of the washing machine and method based on series excited machine |
| CN107190467B (en) * | 2017-07-21 | 2023-11-28 | 无锡和晶信息技术有限公司 | Washing machine control circuit and method based on series excited motor |
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