CN202135341U - Electrothermal controller safety circuit - Google Patents

Electrothermal controller safety circuit Download PDF

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Publication number
CN202135341U
CN202135341U CN201120180801U CN201120180801U CN202135341U CN 202135341 U CN202135341 U CN 202135341U CN 201120180801 U CN201120180801 U CN 201120180801U CN 201120180801 U CN201120180801 U CN 201120180801U CN 202135341 U CN202135341 U CN 202135341U
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China
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circuit
central processing
detecting
voltage
temperature
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CN201120180801U
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Chinese (zh)
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易要春
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DONGGUAN SINOSHINE TECHNOLOGY CO LTD
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DONGGUAN SINOSHINE TECHNOLOGY CO LTD
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Abstract

The utility model discloses an electrothermal controller safety circuit, including an AC voltage reduction rectification voltage stabilizing circuit, a zero-crossing voltage detection circuit, a silicon controlled rectifier circuit, a central processing circuit, a load short circuit and open circuit detection circuit and a heating wire temperature detection circuit. The zero-crossing voltage detection circuit is connected with an AC power supply, the output terminal is connected with the central processing circuit, and when the AC voltage is detected to be tended to zero, the signal is output to the central processor; the input terminals of the heating load short circuit and open circuit detection circuit, the heating load temperature detection circuit and the silicon controlled rectifier circuit are all connected with the central processing circuit, and the output terminals are all connected with an electrothermal element. In the electrothermal controller safety circuit provided in the utility model, temperature detection and control functions and a safety protection effect are possessed; the control accuracy is high; the security is high; and the electrothermal controller safety circuit can be applied in the control system of various electrothermal products.

Description

The electric controller safety circuit
[technical field]
The utility model relates to the electric controller device, particularly a kind of electric controller safety circuit with adjustment control and safety detection function.
[background technology]
Electric heating products is widely used in the daily life, electric blanket especially, existing in the market various single, double or double pair temperature control electric blankets; This electric blanket mostly is the energising heating, and outage just stops heating, and has only two gears; Be high temperature shelves, low temperature shelves, in use, temperature detect switch (TDS) can only be chosen high temperature or low temperature; And the working temperature of electric blanket has different requirement along with the user of temperature height or all ages and classes, simultaneously, and also functions such as not timing, gear demonstration; In addition, general electric blanket does not all have temperature to regulate automatically and the safety detection function, when using at night; The user gets into resting state, is difficult to notice the operating state of electric blanket, if in sleep procedure; Cisco unity malfunction some faults appear and in electric blanket, and for example: heater strip electric leakage, electric heating element short circuit etc. produce great potential safety hazard to the user.
[utility model content]
The purpose of the utility model provides and a kind ofly can effectively overcome the problems referred to above, has that temperature is regulated automatically and the electric controller safety circuit of safety detection.
The purpose of the utility model is achieved in that it comprises the ac buck regulator rectifier circuit, zero passage voltage circuit for detecting, ghyristor circuit, central processing circuit, load short circuits and open circuit circuit for detecting, heater strip temperature detection circuit; Said zero passage voltage circuit for detecting is connected in AC power, and its output is connected with central processing circuit, and the signal in the time of can the detecting alternating voltage being gone to zero voltage exports central processing unit to; The input of said heating load open circuit short circuit circuit for detecting, heating load temperature detection circuit, ghyristor circuit all is connected with central processing circuit, and output all is connected with electric heating element;
In the said structure, said central processing circuit is connected with regularly preinstalled circuit of heating, is used to be provided with the heated time of electric heating element;
In the said structure; Said central processing circuit is connected with temperature selector switch circuit and charactron and luminous tube display circuit; The selection of said temperature selector switch circuit control temperature gear, charactron and luminous tube display circuit are used for the heating time whether displays temperature gear and electric heating element are heated to setting;
In the said structure, be connected with leakage protection circuit on the said AC power, the output of leakage protection circuit is connected with electric heating element.
The beneficial effect of the utility model is: one of which, heater strip temperature detection circuit can detect the temperature of heater strip in the electric heating element; Control electric heating element through central processing circuit, ghyristor circuit again and whether heat the automatic regulatory function that realizes temperature, and have a plurality of temperature gears; Two, when electric heating element is in open circuit or short-circuit condition; Heating load open circuit short circuit circuit for detecting can detect open circuit or short-circuit signal, and then controls not heating of electric heating element through central processing circuit, ghyristor circuit and realize open circuit, short-circuit protection function; Three, if electric heating element has leaky, leakage protection circuit can be realized circuit is cut off, and realizes the protection of circuit electric leakage; Four, the utility model also has zero passage voltage defencive function, the adjusting of many gears, gear shows and the heating timing function.
[description of drawings]
Fig. 1 is the schematic block circuit diagram of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model embodiment;
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
As shown in Figure 1, the utility model comprises the ac buck regulator rectifier circuit, zero passage voltage circuit for detecting, ghyristor circuit, the central processing circuit that comprises a central processing unit, heating load short circuit and open circuit circuit for detecting, heater strip temperature detection circuit; Wherein, the zero passage voltage circuit for detecting is connected in AC power, and its output is connected with central processing circuit, and the signal in the time of can the detecting alternating voltage being gone to zero voltage exports central processing unit to; The input of said heating load open circuit short circuit circuit for detecting, heater strip temperature detection circuit, ghyristor circuit all is connected with central processing circuit, and output all is connected with electric heating element.
As shown in Figure 2; Circuit theory diagrams for the utility model embodiment; It comprises the ac buck regulator rectifier circuit, zero passage voltage circuit for detecting, ghyristor circuit, central processing unit circuit, heating load short circuit and open circuit circuit for detecting, heater strip temperature detection circuit, leakage protection circuit; The zero passage voltage circuit for detecting comprises a resistance R 4, and an end of resistance R 4 is connected with AC power, and the other end is connected with the 15th pin of central processing unit, and the signal when the detecting alternating voltage is gone to zero voltage exports central processing unit to; Ghyristor circuit comprises a controllable silicon TR1, resistance R 11 and R12; The end of R11 is connected with the 16th pin of central processing unit; Accept the heating whether control signal that central processing unit sends through R11 to silicon controlled control utmost point G; The silicon controlled anode A connects the heater strip of electric heating element, and the negative electrode K of controllable silicon connects the ground of the AC power of stabilized voltage power supply; Heating load short circuit and open detection circuit comprise operational amplifier U2A, resistance R 10; R17; R18, R19, capacitor C 11, C5, C6, diode D4 and Z2, the output of operational amplifier U2A is connected with the 19th pin of central processing unit; The heater strip of one termination electric heating element of resistance R 10; After the short circuit of heater strip or open circuit resistance are handled through R10, D4, operational amplifier U2A, testing result is input to the 19th pin of central processing unit, central processing unit sends according to this testing result and whether heats signal to ghyristor circuit; The heater strip temperature sensing circuit comprises operational amplifier U2B, R6, R9, R14; R15, R16, capacitor C 9, C10, the output of operational amplifier U2B is connected with the 18th pin of central processing unit; The temp.-sensing wire PTC of the termination electric heating element of R16, the resistance of temp.-sensing wire PTC can change with heating-up temperature, through R6/R16/C10; R9/R15/R14/C8; After operational amplifier is handled, testing result is input to the 19th pin of central processing unit, thereby central processing unit sends according to this testing result and whether heats signal to ghyristor circuit; Leakage protection circuit comprises diode D5, resistance R 20, R21, Thermal Cutoffs F2, and the end of diode D5 is network terminal SSI, and this network terminal SSI is connected with the silicon controlled anode A; When the heater strip of electric heating element leaks electricity; The SSI network has high voltage to be passed through, and then through diode D5 and resistance R 20/R21, thereby makes resistance R 20/R21 heating; Resistance R 20/21 transfers heat to Thermal Cutoffs F2 through thermal grease, thereby breaks off alternating current; Central processing circuit in the electric controller safety circuit of the utility model also is connected with heating regularly preinstalled circuit, charactron and luminous tube display circuit, temperature selector switch circuit; Wherein, heating regularly preinstalled circuit comprises a resistance R 25 that is connected with central processing unit the 13rd pin, sets the heated time of electric heating element through the resistance size that changes this resistance R 25; The selection of temperature selector switch circuit control temperature gear; Comprise a key switch SW1 who is connected with central processing unit the 14th pin; Can realize the switching of a plurality of temperature gears through this key switch SW1, what of temperature gear can be set according to concrete needs, for example four temperature gears; Whenever press the one-touch switch, gear switches once in order; Charactron and luminous tube display circuit are used for the heating time whether displays temperature gear and electric heating element 11 are heated to setting, comprise a charactron that is connected with central processing unit the 5th, 6,7,8,9,10,11,12 pins and a light-emitting diode D3 who is connected with central processing unit the 3rd pin.
To sum up; The electric controller safety circuit of the utility model detects corresponding signal through heater strip temperature detection circuit, heating load open circuit short circuit circuit for detecting, again detection signal is input to central processing circuit and handles and export control signal control ghyristor circuit, thereby realize the adjusting control to the electric heating element heating; In addition; Also be provided with zero passage voltage circuit for detecting, leakage protection circuit, heating regularly preinstalled circuit, charactron and luminous tube display circuit, temperature selector switch circuit, have better protection effect and additional function, its control precision is high; Temperature detection is accurate, and is safe.
The preferred embodiment that is merely the utility model described above, above-mentioned specific embodiment are not the restrictions to the utility model.In the technological thought category of the utility model, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.

Claims (4)

1. electric controller safety circuit; It is characterized in that: it comprises the ac buck regulator rectifier circuit, zero passage voltage circuit for detecting, ghyristor circuit, the central processing circuit that comprises a central processing unit, load short circuits and open circuit circuit for detecting, heater strip temperature detection circuit; Said zero passage voltage circuit for detecting is connected in AC power, and its output is connected with central processing circuit, and the signal in the time of can the detecting alternating voltage being gone to zero voltage exports central processing unit to; The input of said heating load open circuit short circuit circuit for detecting, heating load temperature detection circuit, ghyristor circuit all is connected with central processing circuit, and output all is connected with electric heating element.
2. electric controller safety circuit according to claim 1 is characterized in that: said central processing circuit is connected with regularly preinstalled circuit of heating, is used to be provided with the heated time of electric heating element.
3. electric controller safety circuit according to claim 1; It is characterized in that: said central processing circuit is connected with temperature selector switch circuit and charactron and luminous tube display circuit; The selection of said temperature selector switch circuit control temperature gear, charactron and luminous tube display circuit are used for the heating time whether displays temperature gear and electric heating element are heated to setting.
4. electric controller safety circuit according to claim 1 is characterized in that: be connected with leakage protection circuit on the said AC power, the output of leakage protection circuit is connected with electric heating element.
CN201120180801U 2011-05-31 2011-05-31 Electrothermal controller safety circuit Expired - Lifetime CN202135341U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120180801U CN202135341U (en) 2011-05-31 2011-05-31 Electrothermal controller safety circuit

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Application Number Priority Date Filing Date Title
CN201120180801U CN202135341U (en) 2011-05-31 2011-05-31 Electrothermal controller safety circuit

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CN202135341U true CN202135341U (en) 2012-02-01

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103975645A (en) * 2012-11-12 2014-08-06 胡少邦 Safety electric-heating circuit, safety electric-heating method, and electric heater
WO2017107891A1 (en) * 2015-12-22 2017-06-29 江阴市辉龙电热电器有限公司 Temperature controller
CN108738168A (en) * 2017-04-24 2018-11-02 佛山市顺德区美的电热电器制造有限公司 Electric cooking pot and its heating control circuit, control method
CN110300463A (en) * 2019-07-04 2019-10-01 佛山市顺德区乐雪儿电器有限公司 A kind of heating folder with sound-light prompting function
KR20190141710A (en) * 2017-04-24 2019-12-24 포샨 순더 메이디 일렉트리컬 히팅 어플라이언시스 메뉴팩쳐링 코., 리미티드 Electric cooker and its heating control circuit , control method
CN111251834A (en) * 2019-11-28 2020-06-09 杭州广安汽车电器有限公司 Heating system of intelligent automobile air conditioner
CN112834958A (en) * 2013-09-17 2021-05-25 光达家电用品公司 Circuit integrity detection system for detecting integrity of sensing wire in electrically heated textile

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103975645A (en) * 2012-11-12 2014-08-06 胡少邦 Safety electric-heating circuit, safety electric-heating method, and electric heater
CN103975645B (en) * 2012-11-12 2015-12-02 胡少邦 A kind of safety electric circuit, safety electric method and electric heating device
CN112834958A (en) * 2013-09-17 2021-05-25 光达家电用品公司 Circuit integrity detection system for detecting integrity of sensing wire in electrically heated textile
WO2017107891A1 (en) * 2015-12-22 2017-06-29 江阴市辉龙电热电器有限公司 Temperature controller
US10809749B2 (en) 2015-12-22 2020-10-20 Jiangyin Huilong Electric Heating Appliance Co., Ltd. Temperature controller
CN108738168A (en) * 2017-04-24 2018-11-02 佛山市顺德区美的电热电器制造有限公司 Electric cooking pot and its heating control circuit, control method
KR20190141710A (en) * 2017-04-24 2019-12-24 포샨 순더 메이디 일렉트리컬 히팅 어플라이언시스 메뉴팩쳐링 코., 리미티드 Electric cooker and its heating control circuit , control method
KR102272895B1 (en) * 2017-04-24 2021-07-02 포샨 순더 메이디 일렉트리컬 히팅 어플라이언시스 메뉴팩쳐링 코., 리미티드 Electric cooker and its heating control circuit,Control method
CN110300463A (en) * 2019-07-04 2019-10-01 佛山市顺德区乐雪儿电器有限公司 A kind of heating folder with sound-light prompting function
CN111251834A (en) * 2019-11-28 2020-06-09 杭州广安汽车电器有限公司 Heating system of intelligent automobile air conditioner
CN111251834B (en) * 2019-11-28 2022-01-07 杭州广安汽车电器有限公司 Heating system of intelligent automobile air conditioner

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