CN209419196U - A kind of temperature control leakage breaker - Google Patents
A kind of temperature control leakage breaker Download PDFInfo
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- CN209419196U CN209419196U CN201822085521.8U CN201822085521U CN209419196U CN 209419196 U CN209419196 U CN 209419196U CN 201822085521 U CN201822085521 U CN 201822085521U CN 209419196 U CN209419196 U CN 209419196U
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- temperature control
- fire
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Abstract
A kind of temperature control leakage breaker; it is for household electricity field; it is in existing earth leakage protective device reload temperature control circuit; so that more functions on earth leakage protective device, existing leakage guarantor also has warm guarantor, and the purpose for heating guarantor is when preventing fire; it can save and be not easy to get an electric shock with the people that water is put out a fire; fire expands once again caused by capable of more preventing because of circuit, and benefit is can to rescue people in fire and protection country or personal property.Circuit feature is: being protected after switch S1 is connected by fiery zero two wires AC:220V alternating current L-N through leakage and accesses indoor load power circuit across magnet ring B; overvoltage crowbar is formed by varistor RV; indoor electric circuit is formed by load resistance R0; manual detection circuit is formed by contact switch S2, resistance R1, by unhook coil T, rectifier bridge stack diode D1-D4, unidirectional controllable silicon S CR.
Description
Technical field
The utility model relates to " a kind of temperature control leakage breakers ".It is for household electricity field.
Background technique
Household electricity is a major issue of the whole society, and either personal house or collective building occupy none resident and do not use
Otherwise 220V alternating current can not live, supply electricity to the mankind and bring greatest benefit, and such as proper use of can cannot also make reprisals once in a while people
Class, electric shock accidents have always existed since electricity consumption, get an electric shock for moment, and the method that can most power off fastly is no more than is protected using electric leakage
Device (abbreviation leakage is protected) is protected, though leakage, which is protected, well also has deficiency, it is raw to protect the human hair that will not have both powered off also and can allow and be put out a fire with water for leakage when catching fire
Electric shock accidents causes life to injure.
Summary of the invention
In order to solve above-mentioned problem, the utility model solve its technical problem the technical solution adopted is that: designed by me
A kind of temperature control leak electricity automatic cutout circuit.
Its circuit feature is: being protected after switch S1 is connected by fiery zero two wires AC:220V alternating current L-N through leakage and is connect across magnet ring B
Enter indoor load power circuit, overvoltage crowbar formed by varistor RV, indoor electric circuit is formed by load resistance R0,
Manual detection circuit is formed by contact switch S2, resistance R1, by unhook coil T, rectifier bridge stack diode D1-D4, unidirectional controllable
The leakage protection circuit that silicon SCR, capacitor C1, C2, C3, resistance R2, R3, mutual inductor L2 are formed, by resistance R4, three-terminal voltage-stabilizing
7812, capacitor C4 forms current limliting, pressure stabilizing, filter circuit, forms power indicating circuit by resistance R5, flashing diode LED, by
Adjustable resistance RP, thermistor RT, resistance R6, triode Q composition temperature control power-down circuit.
Circuit theory is:
One, fiery zero two wires earth leakage protective, 220V alternating current L-N is protected after switch S1 is connected through leakage and is linked into room across magnet ring B
Interior load power circuit, when normal electricity consumption, the electric current on firewire L, which flows through, to be returned to zero curve after indoor load power circuit R0 and forms one
A circuit, the electric current that this process moderate heat zero two wires L, N pass through in magnet ring be it is equal, magnet ring does not play mutual inductance, and leakage is protected
Switch S1 does not trip.Circuit is such as connected by resistance R1, contact switch S2, indoor firewire L electric current is through resistance R1, contact switch
S2 cross magnet ring B be connected to input terminal zero curve N forming circuit, at this moment by the indoor zero curve N of magnet ring on regard to do not have electric current pass through, because
This fiery zero two wires will generate difference, and magnet ring B plays mutual inductance at this time, will generate induced voltage electric current on mutual inductor L2,
By triggering the grid G of controllable silicon SCR after capacitor C1, C2 charging filtering, resistance R2, R3 partial pressure, keeping its anode A and cathode K straight
Connect conducting, at this time the electric current on firewire L through the forward conduction of diode D4 flow through controllable silicon SCR to ground wire, pass through diode again
D2 forward conduction flows through unhook coil T to zero curve N forming circuit, and unhook coil T energized action will be connected to leakage and protect on switch S1
Hook take off, cause leakage to protect and solve to complete the test that manually powers off because breaking off relations to power off.This is to test to power off by manual method
Principle, really electric shock be by leakage protect indoor firewire on by human contact ground when generation electric current formed with entering
Circuit causes leakage to protect power-off in time, and it is same reason with test resistance R1 that human body, which is exactly a resistance, in fact.
Two, temperature protection, current limliting, pressure stabilizing, filter circuit formed by resistance R4, three-terminal voltage-stabilizing 7812, capacitor C4, by resistance
R5, flashing diode LED form power indicating circuit, form temperature by adjustable resistance RP, thermistor RT, resistance R6, triode Q
Degree control power-down circuit.Its principle is that adjustable resistance RP connects to form partial pressure with thermistor RT and R6, the base stage B of triode Q
Only 0.3 or so DC voltage at normal temperature, is not turned in high-impedance state between collector C and emitter E, when once around
Temperature constantly increases when fire occurs, and thermistor RT resistance value reduces when being about raised to 40 degree or so, the base stage B voltage of triode Q
When being increased to 0.7V or more, 12V supply voltage is switched to the grid G of controllable silicon SCR by conducting between collector C and emitter E,
Make directly to be connected between its anode A and cathode K, the electric current on firewire L flows through silicon-controlled through the forward conduction of diode D4 at this time
SCR flows through unhook coil T to zero curve N forming circuit to ground wire, again by diode D2 forward conduction, and unhook coil T obtains electronic
Make, the hook that leakage is protected on switch S1 will be connected to and taken off, cause leakage to protect and powered off because breaking off relations, people caused by solving because of fire incident
The problem of body electric shock or property loss.
The beneficial effects of the utility model are: add temperature-control circuit on existing earth leakage protective device, can reach because
Fire incident or because other hot environments are close to the purpose for promoting temperature control leakage to protect power-off, ensure that people's life and property
Safety.The beneficial effect is that obvious.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Circuit attached drawing is the circuit diagram of the utility model.
Specific embodiment
In circuit attached drawing: its circuit feature is: by fiery zero two wires AC:220V alternating current L-N after switch S1 connection is protected in leakage
Indoor load power circuit is accessed across magnet ring B, overvoltage crowbar is formed by varistor RV, by load resistance R0 agent's room
Interior power circuit forms manual detection circuit by contact switch S2, resistance R1, by unhook coil T, rectifier bridge stack diode D1-
The leakage protection circuit that D4, unidirectional controllable silicon S CR, capacitor C1, C2, C3, resistance R2, R3, mutual inductor L2 are formed, by resistance
R4, three-terminal voltage-stabilizing 7812, capacitor C4 form current limliting, pressure stabilizing, filter circuit, form power supply by resistance R5, flashing diode LED and refer to
Show circuit, temperature control power-down circuit is formed by adjustable resistance RP, thermistor RT, resistance R6, triode Q.
Claims (1)
1. a kind of temperature control leakage breaker, circuit feature is: protecting switch S1 through leakage by fiery zero two wires AC:220V alternating current L-N
Magnet ring B is passed through after connection and accesses indoor load power circuit, overvoltage crowbar is formed by varistor RV, by load resistance R0
Indoor electric circuit is formed, manual detection circuit is formed by contact switch S2, resistance R1, by unhook coil T, two pole of rectifier bridge stack
The leakage protection circuit that pipe D1-D4, unidirectional controllable silicon S CR, capacitor C1, C2, C3, resistance R2, R3, mutual inductor L2 are formed, by
Resistance R4, three-terminal voltage-stabilizing 7812, capacitor C4 form current limliting, pressure stabilizing, filter circuit, form electricity by resistance R5, flashing diode LED
Source indicating circuit forms temperature control power-down circuit by adjustable resistance RP, thermistor RT, resistance R6, triode Q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822085521.8U CN209419196U (en) | 2018-12-04 | 2018-12-04 | A kind of temperature control leakage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822085521.8U CN209419196U (en) | 2018-12-04 | 2018-12-04 | A kind of temperature control leakage breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209419196U true CN209419196U (en) | 2019-09-20 |
Family
ID=67937666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822085521.8U Active CN209419196U (en) | 2018-12-04 | 2018-12-04 | A kind of temperature control leakage breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209419196U (en) |
-
2018
- 2018-12-04 CN CN201822085521.8U patent/CN209419196U/en active Active
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