CN203755035U - Program controller for washing machine - Google Patents
Program controller for washing machine Download PDFInfo
- Publication number
- CN203755035U CN203755035U CN201420111055.5U CN201420111055U CN203755035U CN 203755035 U CN203755035 U CN 203755035U CN 201420111055 U CN201420111055 U CN 201420111055U CN 203755035 U CN203755035 U CN 203755035U
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- control circuit
- circuit
- motor
- igct
- electrically connected
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Abstract
The utility model discloses a program controller for a washing machine. The program controller for the washing machine comprises a control circuit and a control chip. The control circuit comprises a starting circuit for starting the washing machine to work, a water level detection circuit for detecting the water level of the washing machine, a water inflow control circuit for controlling water inflow of an electric valve, a water drainage control circuit for controlling water drainage of the electric valve, a forward-rotation control circuit for controlling a motor to rotate forwards and a backward-rotation control circuit for controlling the motor to rotate backwards. The starting circuit, the water level detection circuit, the water inflow control circuit, the water drainage control circuit, the forward-rotation control circuit and the backward-rotation control circuit are respectively and electrically connected with the control chip. The control circuit further comprises a temperature detection circuit which is electrically connected with the control chip. According to the program controller, when the temperature is too high due to the fact that the motor is overloaded, the motor stops working, and therefore the service life of the motor is prolonged.
Description
Technical field
The utility model relates to a kind of washing machine accessory, and in particular, it relates to a kind of cyclelog of washing machine.
Background technology
Current washing machine is all to adopt built-in controller to control, and controller can be controlled the circuit of motor for washer rotating and the circuit of controlling washing machine inflow and draining, these circuit is worked by setup program, thereby reach the effect of automatic washing; Current washing machine all adopts motor to repeat the positive and negative function that reaches washing that transfers substantially; The machine operation situation of washing machine is more special, and its load is by cylinder, water and treats that washings forms, so motor will bear larger load, while especially washing a heavier clothes, motor need to bear larger load; When load has surpassed after the load and motor long time running of motor, can produce superheating phenomenon, this can reduce the service life of motor greatly, and the cyclelog of current washing machine is when motor overload causes excess Temperature, cannot stop machine operation, thereby reduce motor service life.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of can stop machine operation when motor overload causes excess Temperature, thereby improves the cyclelog of the washing machine in motor service life.
For achieving the above object, the utility model provides following technical scheme: a kind of cyclelog of washing machine, comprise control circuit and control chip, described control circuit comprises the start-up circuit that starts washing machine work, detect the water level detection circuit of water level of washing machine, control the water inlet control circuit of motor-driven valve water inlet, control the draining control circuit of motor-driven valve draining, control the forward control circuit of motor forward and the reverse turn control circuit of controlling motor reversal, described start-up circuit, water level detection circuit, water inlet control circuit, draining control circuit, forward control circuit and reverse turn control circuit are all electrically connected to control chip, described control circuit also comprises temperature sensing circuit, described temperature sensing circuit is electrically connected to control chip.
By adopting technique scheme, motor in washing machine is all to be controlled by forward control circuit and reverse turn control circuit on cyclelog, when start-up circuit is connected, and send enabling signal to control chip, control chip according to internal processes to forward control circuit and reverse turn control circuit transmitted signal, thereby control motor positive and inverse, temperature sensing circuit can detected temperatures and is fed back signal to control chip, when temperature sensing circuit detects motor temperature when too high, to control chip feedback signal, control chip is received after the signal of temperature sensing circuit, can disconnect forward control circuit and reverse turn control circuit, thereby controlling motor quits work, guaranteed that motor can not be burned or reduce the life-span, this design can stop machine operation when motor overload causes excess Temperature, thereby improves motor service life.
The utility model is further set to: described temperature sensing circuit comprises the thermistor being arranged on motor, and described thermistor is electrically connected to the I/0 mouth of control chip.
By adopting technique scheme, thermistor is due to small volume, thus can be attached on motor housing, and thermistor uses is the thermistor of negative coefficient, and when the temperature of motor housing raises, the resistance value of thermistor can reduce gradually; When motor temperature is during in normal temperature, the resistance value of thermistor is very high, and the P3.2 pin of I/O mouth is electrically connected to power supply after connecting with thermistor, and power supply is the low-voltage of employing 5V, so just can guarantee that control chip is not burned; When motor temperature is not high, the resistance of thermistor is very high, so the P3.2 pin of I/O mouth is in low level state; When motor overheating, the resistance of thermistor drops to a certain degree, so electric current raises, now the P3.2 pin of I/O mouth is triggered, and control chip disconnects forward control circuit and reverse turn control circuit by corresponding pin, thereby motor is quit work; This project organization is simple, detects the temperature of motor with thermistor, thereby plays the effect of overtemperature protection.
The utility model is further set to: described forward control circuit comprises the first IGCT, described reverse turn control circuit comprises the second IGCT, on described the first IGCT and on the second IGCT, be all parallel with electric capacity, the anode of the anode of described the first IGCT and the second IGCT is all electrically connected to live wire, the negative electrode of the negative electrode of described the first IGCT and the second IGCT is all electrically connected to motor, the gate pole of described the first IGCT is electrically connected to the I/0 mouth of control chip, and the gate pole of described the second IGCT is electrically connected to the I/0 mouth of control chip.
By adopting technique scheme, motor is the parts that are used for controlling washing machine drum rotating in prior art, the first IGCT is electrically connected to the P3.6 pin of I/0 mouth, the second IGCT is electrically connected to the P3.0 pin of I/0 mouth, electric capacity can provide backward voltage when power-off, thereby disconnects the first IGCT or the second IGCT; While having faint trigger current output in the P3.0 pin of the P3.6 of I/0 mouth pin or I/0 mouth, just can make corresponding the first IGCT or the second IGCT conducting, thereby make the motor positive and inverse on washing machine; When the P3.2 of I/0 mouth pin is triggered to high level, the P3.0 pin of I/0 mouth and the P3.6 pin of I/0 mouth all stop carrying signal, capacitor discharge on electric capacity on the first IGCT and the second IGCT, thus the first IGCT and the second IGCT are disconnected, and motor quits work; This design can be controlled forward control circuit and reverse turn control circuit by control chip, and simple in structure, is convenient to implement.
The utility model is further set to: described control circuit also comprises warning circuit, described warning circuit comprises light emitting diode and switch triode, the base stage of described switch triode is electrically connected to the I/0 mouth of control chip, the colelctor electrode of described switch triode is electrically connected to light emitting diode, and described light emitting diode is electrically connected to power supply.
By adopting technique scheme, light emitting diode can be luminous, thereby play alarm function, reminds user's motor overheating; The colelctor electrode of switch triode is always in high level state, when the P3.2 of I/O mouth pin is during in low level, the P2.3 pin of I/O mouth is in high level, now the base stage of switch triode and colelctor electrode are all in high level, switch triode is equivalent to open circuit, in warning circuit, do not have electric current to flow through, so light emitting diode is not luminous; When the P3.2 of I/O mouth pin high level, the P2.3 pin of I/O mouth is in low level, and the level of the colelctor electrode of switch triode is higher than the level of base stage, and switch triode is equivalent to path, has electric current to flow through in warning circuit, thereby drives lumination of light emitting diode; This design can, when motor overheating, be pointed out user.
Accompanying drawing explanation
Fig. 1 is control module figure of the present utility model;
Fig. 2 is control chip circuit diagram of the present utility model;
Fig. 3 is temperature sensing circuit figure of the present utility model;
Fig. 4 is forward control circuit of the present utility model and reverse turn control circuit figure;
Fig. 5 is warning circuit figure of the present utility model.
In figure: 1, control chip; 2, start-up circuit; 3, water level detection circuit; 4, water inlet control circuit; 5, draining control circuit; 6, forward control circuit; 7, reverse turn control circuit; 8, temperature sensing circuit; Rt, thermistor; SCR1, the first IGCT; SCR2, the second IGCT; M, motor; 13, warning circuit; LED, light emitting diode; Q, switch triode.
The specific embodiment
Shown in Fig. 5, the cyclelog of a kind of washing machine that present case is implemented, comprise control circuit and control chip 1, described control circuit comprises the start-up circuit 2 that starts washing machine work, detect the water level detection circuit 3 of water level of washing machine, control the water inlet control circuit 4 of motor-driven valve water inlet, control the draining control circuit 5 of motor-driven valve draining, control the forward control circuit 6 of motor M forward and the reverse turn control circuit 7 of controlling motor M reversion, described start-up circuit 2, water level detection circuit 3, water inlet control circuit 4, draining control circuit 5, forward control circuit 6 and reverse turn control circuit 7 are all electrically connected to control chip 1, described control circuit also comprises temperature sensing circuit 8, described temperature sensing circuit 8 is electrically connected to control chip 1.
Motor M in washing machine is all to be controlled by the forward control circuit 6 on cyclelog and reverse turn control circuit 7, when start-up circuit 2 is connected, and send enabling signal to control chip 1, control chip 1 according to internal processes to forward control circuit 6 and reverse turn control circuit 7 transmitted signals, thereby control motor M rotating, temperature sensing circuit 8 can detected temperatures and is fed back signal to control chip 1, when temperature sensing circuit 8 detects motor M excess Temperature, to control chip 1 feedback signal, control chip 1 is received after the signal of temperature sensing circuit 8, can disconnect forward control circuit 6 and reverse turn control circuit 7, thereby controlling motor M quits work, guaranteed that motor M can not be burned or reduce the life-span.
Described temperature sensing circuit 8 comprises the thermistor Rt being arranged in motor M, and described thermistor Rt is electrically connected to the I/0 mouth of control chip 1.
Thermistor Rt is due to small volume, thus can be attached on motor M shell, and thermistor Rt uses is the thermistor Rt of negative coefficient, and when the temperature of motor M shell raises, the resistance value of thermistor Rt can reduce gradually; When motor M temperature is during in normal temperature, the resistance value of thermistor Rt is very high, and the P3.2 pin of I/O mouth is electrically connected to power supply after connecting with thermistor Rt, and power supply is the low-voltage of employing 5V, so just can guarantee that control chip 1 is not burned; When motor M temperature is not high, the resistance of thermistor Rt is very high, so the P3.2 pin of I/O mouth is in low level state; When motor M is overheated, the resistance of thermistor Rt drops to a certain degree, so electric current raises, now the P3.2 pin of I/O mouth is triggered, control chip 1 disconnects forward control circuit 6 and reverse turn control circuit 7 by corresponding pin, thereby motor M is quit work.
Described forward control circuit 6 comprises the first IGCT SCR1, described reverse turn control circuit 7 comprises the second IGCT SCR2, described the first IGCT SCR1 above and on the second IGCT SCR2 is all parallel with electric capacity, the anode of the anode of described the first IGCT SCR1 and the second IGCT SCR2 is all electrically connected to live wire, the negative electrode of the negative electrode of described the first IGCT SCR1 and the second IGCT SCR2 is all electrically connected to motor M, the gate pole of described the first IGCT SCR1 is electrically connected to the I/0 mouth of control chip 1, the gate pole of described the second IGCT SCR2 is electrically connected to the I/0 mouth of control chip 1.
Motor M is the parts that are used for controlling washing machine drum rotating in prior art, the first IGCT SCR1 is electrically connected to the P3.6 pin of I/0 mouth, the second IGCT SCR2 is electrically connected to the P3.0 pin of I/0 mouth, electric capacity can provide backward voltage when power-off, thereby disconnects the first IGCT SCR1 or the second IGCT SCR2; While having faint trigger current output in the P3.0 pin of the P3.6 of I/0 mouth pin or I/0 mouth, just can make corresponding the first IGCT SCR1 or the second IGCT SCR2 conducting, thereby make the motor M rotating on washing machine; When the P3.2 of I/0 mouth pin is triggered to high level, the P3.0 pin of I/0 mouth and the P3.6 pin of I/0 mouth all stop carrying signal, capacitor discharge on electric capacity on the first IGCT SCR1 and the second IGCT SCR2, thereby the first IGCT SCR1 and the second IGCT SCR2 are disconnected, and motor M quits work.
Described control circuit also comprises warning circuit 13, described warning circuit 13 comprises LED and switch triode Q, the base stage of described switch triode Q is electrically connected to the I/0 mouth of control chip 1, the colelctor electrode of described switch triode Q is electrically connected to LED, and described LED is electrically connected to power supply.
LED can be luminous, thereby play alarm function, reminds user's motor M overheated; The colelctor electrode of switch triode Q is always in high level state, when the P3.2 of I/O mouth pin is during in low level, the P2.3 pin of I/O mouth is in high level, now the base stage of switch triode Q and colelctor electrode are all in high level, switch triode Q is equivalent to open circuit, in warning circuit 13, do not have electric current to flow through, so LED is not luminous; When the P3.2 of I/O mouth pin high level, the P2.3 pin of I/O mouth is in low level, and the level of the colelctor electrode of switch triode Q is higher than the level of base stage, and switch triode Q is equivalent to path, in warning circuit 13, there is electric current to flow through, thereby drive LED luminous.
The utlity model has following advantage: can when motor overload causes excess Temperature, stop machine operation, thereby improve motor service life.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. the cyclelog of a washing machine, comprise control circuit and control chip, described control circuit comprises the start-up circuit that starts washing machine work, detect the water level detection circuit of water level of washing machine, control the water inlet control circuit of motor-driven valve water inlet, control the draining control circuit of motor-driven valve draining, control the forward control circuit of motor forward and the reverse turn control circuit of controlling motor reversal, described start-up circuit, water level detection circuit, water inlet control circuit, draining control circuit, forward control circuit and reverse turn control circuit are all electrically connected to control chip, it is characterized in that: described control circuit also comprises temperature sensing circuit, described temperature sensing circuit is electrically connected to control chip.
2. the cyclelog of a kind of washing machine according to claim 1, is characterized in that: described temperature sensing circuit comprises the thermistor being arranged on motor, and described thermistor is electrically connected to the I/0 mouth of control chip.
3. the cyclelog of a kind of washing machine according to claim 2, it is characterized in that: described forward control circuit comprises the first IGCT, described reverse turn control circuit comprises the second IGCT, on described the first IGCT and on the second IGCT, be all parallel with electric capacity, the anode of the anode of described the first IGCT and the second IGCT is all electrically connected to live wire, the negative electrode of the negative electrode of described the first IGCT and the second IGCT is all electrically connected to motor, the gate pole of described the first IGCT is electrically connected to the I/0 mouth of control chip, the gate pole of described the second IGCT is electrically connected to the I/0 mouth of control chip.
4. the cyclelog of a kind of washing machine according to claim 2, it is characterized in that: described control circuit also comprises warning circuit, described warning circuit comprises light emitting diode and switch triode, the base stage of described switch triode is electrically connected to the I/0 mouth of control chip, the colelctor electrode of described switch triode is electrically connected to light emitting diode, and described light emitting diode is electrically connected to power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111055.5U CN203755035U (en) | 2014-03-12 | 2014-03-12 | Program controller for washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111055.5U CN203755035U (en) | 2014-03-12 | 2014-03-12 | Program controller for washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203755035U true CN203755035U (en) | 2014-08-06 |
Family
ID=51250334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420111055.5U Expired - Fee Related CN203755035U (en) | 2014-03-12 | 2014-03-12 | Program controller for washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203755035U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970548A (en) * | 2016-06-23 | 2016-09-28 | 安徽金帅洗衣机有限公司 | Dehydration system of washing machine |
| CN107830225A (en) * | 2017-12-12 | 2018-03-23 | 湖南普信工程技术有限公司 | A kind of air-valve performs controller |
| CN112239942A (en) * | 2019-07-17 | 2021-01-19 | 青岛海尔滚筒洗衣机有限公司 | Control method for drying down jackets |
-
2014
- 2014-03-12 CN CN201420111055.5U patent/CN203755035U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970548A (en) * | 2016-06-23 | 2016-09-28 | 安徽金帅洗衣机有限公司 | Dehydration system of washing machine |
| CN107830225A (en) * | 2017-12-12 | 2018-03-23 | 湖南普信工程技术有限公司 | A kind of air-valve performs controller |
| CN112239942A (en) * | 2019-07-17 | 2021-01-19 | 青岛海尔滚筒洗衣机有限公司 | Control method for drying down jackets |
| CN112239942B (en) * | 2019-07-17 | 2024-01-12 | 上海海尔洗涤电器有限公司 | Control method for drying down jackets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20210312 |