CN204190353U - A kind of household electrical appliance automatic overvoltage power off device - Google Patents
A kind of household electrical appliance automatic overvoltage power off device Download PDFInfo
- Publication number
- CN204190353U CN204190353U CN201420688634.6U CN201420688634U CN204190353U CN 204190353 U CN204190353 U CN 204190353U CN 201420688634 U CN201420688634 U CN 201420688634U CN 204190353 U CN204190353 U CN 204190353U
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Abstract
The utility model discloses a kind of household electrical appliance automatic overvoltage power off device, it is characterized in that: comprise 220V AC power circuit, 12V DC circuit, pressure sampling circuit, circuits for triggering and power and perform output executing circuit, 220V AC power circuit comprises the socket of normally-closed contact and series connection with it; Pressure sampling circuit is made up of the diode of connecting successively, resistance and potentiometer, and the two ends of potentiometer are parallel with electrochemical capacitor; 12V DC circuit comprises bleeder resistance, decompression capacitor, rectifier diode and voltage stabilizing didoe, and bleeder resistance, decompression capacitor are in parallel; Circuits for triggering comprise electronic switch chip and connected voltage stabilizing didoe; It is the relay in parallel with electronic switch chip that power performs output executing circuit.The utility model effectively can avoid power consumption equipment suffers in various degree damage because of overvoltage, has that circuit structure is simple, reliable working performance, easy to use, cheap feature.
Description
Technical field
The utility model relates to electric power electrical technology field, especially relates to a kind of household electrical appliance automatic overvoltage power off device.
Background technology
We know: a lot of power consumption equipment itself does not have mains supply over-voltage defencive function; as: the power consumption equipments such as refrigerator, washing machine, electric rice cooker, microwave oven, electric iron; run into 220V alternating current voltage more than this outstanding problem of 240V; ignore, or purchase complex structure, electronic regulation equipment costly.The former way is not only very harmful to power consumption equipment,
And will greatly affect use safety and the life-span of power consumption equipment; The latter's investment cost is higher, and adds the trouble of the aspect such as user installation, operation and maintenance electronic regulation equipment.So how to tackle the region that some mains ripple is large, unstable, especially does remote villages power some areas very unstable, because overtension burns out this general phenomenon of power consumption equipment?
Therefore, study that a kind of circuit structure is simple, practical and convenient, 220V alternating current over-voltage automatic power-off protector that reliable working performance, making are cheap is necessary.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to provide a kind of household electrical appliance automatic overvoltage power off device, and the utility model has that circuit structure is simple, reliable working performance, easy to use, cheap feature.Install and use this device, exceeding permissible value once line voltage and at once automatically cut off AC power, effectively avoid power consumption equipment and suffer damage in various degree because 220V alternating current voltage is too high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of household electrical appliance automatic overvoltage power off device, it is characterized in that: comprise 220V AC power circuit, 12V DC circuit, pressure sampling circuit, circuits for triggering and power and perform output executing circuit, the CZ socket that described 220V AC power circuit comprises normally-closed contact J-1 and connects with normally-closed contact J-1, the circuit integrity of normally-closed contact J-1, CZ socket composition of described series connection is attempted by between 220V alternating current fire wire end and zero line side, described pressure sampling circuit is made up of the diode VD3 connected successively, resistance R2 and potentiometer RP1, and the two ends of described potentiometer RP1 are parallel with electrochemical capacitor C3, described 12V DC circuit comprises bleeder resistance R1, decompression capacitor C1, rectifier diode VD1 and voltage stabilizing didoe DW1, described bleeder resistance R1, decompression capacitor C1 is in parallel, described bleeder resistance R1, one end of decompression capacitor C1 parallel connection is connected with diode VD3 positive pole, described bleeder resistance R1, the other end of decompression capacitor C1 parallel connection is connected with rectifier diode VD1 positive pole, described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, described voltage stabilizing didoe DW1 is connected with rectifier diode VD1 negative pole with one end of electrochemical capacitor C2 parallel connection, the other end ground connection that described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, the voltage stabilizing didoe DW2 that described circuits for triggering comprise electronic switch chip and are connected with electronic switch chip, it is the relay J in parallel with electronic switch chip output that described power performs output executing circuit.
Further, described electronic switch chip is TWH8752 type electronic switch.
Further, described relay J is parallel with reverse diode VD2.
Further, described voltage stabilizing didoe DW2 plus earth, negative pole connects electronic switch chip input.
Further, resistance R3 is connected with between described voltage stabilizing didoe DW2 negative pole and potentiometer RP1 lever arm.
Further, described potentiometer RP1 is connected with resistance R2 with one end of electrochemical capacitor C3 parallel connection, the other end ground connection that potentiometer RP1 is in parallel with electrochemical capacitor C3.
Further, described potentiometer RP1 selects common trimmer potentiometer.
Further, described relay J selects 6V D.C. contactor.
The utility model compared with prior art has the following advantages:
The utility model has that circuit structure is simple, reliable working performance, easy to use, cheap feature.Install and use this device, exceeding permissible value once line voltage and at once automatically cut off AC power, effectively avoid power consumption equipment and suffer damage in various degree because 220V alternating current voltage is too high.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is automatic overvoltage power off device circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, a kind of household electrical appliance automatic overvoltage power off device, it is characterized in that: comprise 220V AC power circuit, 12V DC circuit, pressure sampling circuit, circuits for triggering and power and perform output executing circuit, the CZ socket that described 220V AC power circuit comprises normally-closed contact J-1 and connects with normally-closed contact J-1, the circuit integrity of normally-closed contact J-1, CZ socket composition of described series connection is attempted by between 220V alternating current fire wire end and zero line side, described pressure sampling circuit is made up of the diode VD3 connected successively, resistance R2 and potentiometer RP1, and the two ends of described potentiometer RP1 are parallel with electrochemical capacitor C3, described 12V DC circuit comprises bleeder resistance R1, decompression capacitor C1, rectifier diode VD1 and voltage stabilizing didoe DW1, described bleeder resistance R1, decompression capacitor C1 is in parallel, described bleeder resistance R1, one end of decompression capacitor C1 parallel connection is connected with diode VD3 positive pole, described bleeder resistance R1, the other end of decompression capacitor C1 parallel connection is connected with rectifier diode VD1 positive pole, described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, described voltage stabilizing didoe DW1 is connected with rectifier diode VD1 negative pole with one end of electrochemical capacitor C2 parallel connection, the other end ground connection that described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, the voltage stabilizing didoe DW2 that described circuits for triggering comprise electronic switch chip and are connected with electronic switch chip, it is the relay J in parallel with electronic switch chip output that described power performs output executing circuit.
In the present embodiment, described electronic switch chip is TWH8752 type electronic switch.
In the present embodiment, described relay J is parallel with reverse diode VD2.
In the present embodiment, described voltage stabilizing didoe DW2 plus earth, negative pole connects electronic switch chip input.
In the present embodiment, between described voltage stabilizing didoe DW2 negative pole and potentiometer RP1 lever arm, be connected with resistance R3.
In the present embodiment, described potentiometer RP1 is connected with resistance R2 with one end of electrochemical capacitor C3 parallel connection, the other end ground connection that potentiometer RP1 is in parallel with electrochemical capacitor C3.
In the present embodiment, described potentiometer RP1 selects common trimmer potentiometer.
In the present embodiment, described relay J selects 6V D.C. contactor.
Utility model works principle is: 220V civil power is through C1, VD1, DW1 for switch integrated circuit provides stable 12V operating voltage, and VD3, R2 and RP1 form pressure sampling circuit.When line voltage is normal, DW2 can not conducting, TWH8778 5. pin operating voltage lower than 1.6V, relay J not adhesive, civil power is CZ socket normal power supply through J-1 normally-closed contact; When line voltage exceed normally put time, DW2 punctures conducting, and TWH8778 the 5. pin current potential rises to 1.6V, and IC is overturn, the 3. pin export high level, relay adhesive, electrical appliance is powered and is cut off immediately, thus avoids the harm because overvoltage brings to electrical appliance.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection range of technical solutions of the utility model.
Claims (8)
1. a household electrical appliance automatic overvoltage power off device, it is characterized in that: comprise 220V AC power circuit, 12V DC circuit, pressure sampling circuit, circuits for triggering and power and perform output executing circuit, the CZ socket that described 220V AC power circuit comprises normally-closed contact J-1 and connects with normally-closed contact J-1, the circuit integrity of normally-closed contact J-1, CZ socket composition of described series connection is attempted by between 220V alternating current fire wire end and zero line side, described pressure sampling circuit is made up of the diode VD3 connected successively, resistance R2 and potentiometer RP1, and the two ends of described potentiometer RP1 are parallel with electrochemical capacitor C3, described 12V DC circuit comprises bleeder resistance R1, decompression capacitor C1, rectifier diode VD1 and voltage stabilizing didoe DW1, described bleeder resistance R1, decompression capacitor C1 is in parallel, described bleeder resistance R1, one end of decompression capacitor C1 parallel connection is connected with diode VD3 positive pole, described bleeder resistance R1, the other end of decompression capacitor C1 parallel connection is connected with rectifier diode VD1 positive pole, described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, described voltage stabilizing didoe DW1 is connected with rectifier diode VD1 negative pole with one end of electrochemical capacitor C2 parallel connection, the other end ground connection that described voltage stabilizing didoe DW1 is in parallel with electrochemical capacitor C2, the voltage stabilizing didoe DW2 that described circuits for triggering comprise electronic switch chip and are connected with electronic switch chip, it is the relay J in parallel with electronic switch chip output that described power performs output executing circuit.
2. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 1, it is characterized in that: described electronic switch chip is TWH8752 type electronic switch.
3. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 2, it is characterized in that: described relay J is parallel with reverse diode VD2.
4. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 2, it is characterized in that: described voltage stabilizing didoe DW2 plus earth, negative pole connects electronic switch chip input.
5. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 4, it is characterized in that: between described voltage stabilizing didoe DW2 negative pole and potentiometer RP1 lever arm, be connected with resistance R3.
6. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 1, it is characterized in that: described potentiometer RP1 is connected with resistance R2 with one end of electrochemical capacitor C3 parallel connection, the other end ground connection that potentiometer RP1 is in parallel with electrochemical capacitor C3.
7. according to a kind of household electrical appliance automatic overvoltage power off device according to claim 1, it is characterized in that: described potentiometer RP1 selects common trimmer potentiometer.
8., according to a kind of household electrical appliance automatic overvoltage power off device according to claim 1, it is characterized in that: described relay J selects 6V D.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688634.6U CN204190353U (en) | 2014-11-16 | 2014-11-16 | A kind of household electrical appliance automatic overvoltage power off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688634.6U CN204190353U (en) | 2014-11-16 | 2014-11-16 | A kind of household electrical appliance automatic overvoltage power off device |
Publications (1)
| Publication Number | Publication Date |
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| CN204190353U true CN204190353U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420688634.6U Expired - Fee Related CN204190353U (en) | 2014-11-16 | 2014-11-16 | A kind of household electrical appliance automatic overvoltage power off device |
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| Country | Link |
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| CN (1) | CN204190353U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048405A (en) * | 2015-07-21 | 2015-11-11 | 国家电网公司 | Overvoltage and overload automatic power off control device of self-recovery power supply line |
| CN105092945A (en) * | 2015-07-21 | 2015-11-25 | 国家电网公司 | Zero-line overcurrent alarm device for power distribution network |
| CN106410528A (en) * | 2016-11-18 | 2017-02-15 | 广西大学 | Overvoltage automatic power-off safety socket |
| CN106953298A (en) * | 2017-03-22 | 2017-07-14 | 无锡飞翎电子有限公司 | Washing machine and its overvoltage crowbar |
| CN110086159A (en) * | 2019-06-05 | 2019-08-02 | 珠海格力电器股份有限公司 | Voltage self-adaptive driving circuit and driving method, power supply module and household appliance |
-
2014
- 2014-11-16 CN CN201420688634.6U patent/CN204190353U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048405A (en) * | 2015-07-21 | 2015-11-11 | 国家电网公司 | Overvoltage and overload automatic power off control device of self-recovery power supply line |
| CN105092945A (en) * | 2015-07-21 | 2015-11-25 | 国家电网公司 | Zero-line overcurrent alarm device for power distribution network |
| CN106410528A (en) * | 2016-11-18 | 2017-02-15 | 广西大学 | Overvoltage automatic power-off safety socket |
| CN106953298A (en) * | 2017-03-22 | 2017-07-14 | 无锡飞翎电子有限公司 | Washing machine and its overvoltage crowbar |
| CN106953298B (en) * | 2017-03-22 | 2019-07-19 | 无锡飞翎电子有限公司 | Washing machine and its overvoltage crowbar |
| CN110086159A (en) * | 2019-06-05 | 2019-08-02 | 珠海格力电器股份有限公司 | Voltage self-adaptive driving circuit and driving method, power supply module and household appliance |
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| 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 |
Granted publication date: 20150304 Termination date: 20151116 |
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| EXPY | Termination of patent right or utility model |