CN2869626Y

CN2869626Y - Device for automatically turning-off gas of gas-range controlled by temperature

Info

Publication number: CN2869626Y
Application number: CN 200520117394
Authority: CN
Inventors: 施妙朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-20
Filing date: 2005-12-20
Publication date: 2007-02-14
Anticipated expiration: 2015-12-20

Abstract

The utility model relates to a gas stove temperature controlled auto shut off gas device which added a temperature sensor, a temperature meter, a relay, an electro-motion valve, a power supply based on the present gas stove. The temperature sensor output is stick to the tested surface of the cooking utensil, the output of temperature sensor connects to the temperature meter, the relay coil connects to the output of temperature meter, and the relay connects to electric power. Preset the required temperature on the temperature meter according to the food cooking temperature during operation. The device can automatically shut off the gas to avoid over burning the food when the temperature is over than the required. The model has the advantages of simple structure without modifying the gas stove structure, easy installation, easy operation, safety and reliability.

Description

A kind of device of gas-cooker temperature control automatic self-closing gas

Technical field

The utility model relates to the temperature technical field of control automatically, specifically is that a kind of gas-cooker temperature is controlled the device of closing combustion gas automatically.

Background technology

The fuel gas supply of the existing gas-cooker that widely uses is realized closing by ignition switch hand-manipulated and manual temperature control valve (TCV), it is to rely on fully to hot plate operating experience, determine whether to close gas valve with the time of hotting plate according to firepower is strong and weak, the heat information just that it does not utilize gas-cooker to be produced when burning removes to control valve-off, how just this exist thread in giving and using, for example, the misoperation firepower is too quickly, often burnt because of the too high food of temperature, bowl burns out, even can be accidents caused; And firepower regulate too a little less than, the time of then hotting plate again can be long, also can influence cooking quality, mouthfeel is bad.Only need use simmered food, but hot plate the long period.Analyze reason most important be exactly when hotting plate temperature can not regulate voluntarily, can not close gas valve voluntarily.

The utility model content

The purpose of this utility model provides a kind of gas-cooker temperature of utilizing design temperature to cut off fuel gas supply automatically and controls the device of closing combustion gas automatically.

The utility model technical solution is the device that the temperature control automatic self-closing gas is set at gas-cooker, it is by gas pipeline 1, ignition switch and manual temperature control valve (TCV) 2, burner 3, on the gas-cooker of forming, being provided with one comprises and sets up temperature sensor 5, thermometer 6, relay 7, motor-operated control valve 8, the control device of power supply 9, the detection zone of the heat-transfer area of this temperature sensor 5 and cooking-vessel 10 fits, temperature sensor output cut-in temperature table, the output of the coil jointing temp table of relay, the contact arm of two groups of contacts of relay connects the motor two ends, the normally closed of two groups of contacts just connecing its dc source with often opening to intersect, negative two ends, wherein one group of contact series electrical brake control valve.

And this temperature sensor 5 clip shape that can be a built-in thermistor, it adopts blade of a sword fish to press from both sides in the endoporus of circle handle and puts into a thermal resistor, this thermal resistor is closely to contact with its installation circular hole, and draw with the outer flexible circuit conductor that is with wire netting at the thermistor two ends.

Described motor-operated control valve 8 can be to be made of DC micromotor 81, gear train, fuel gas valve core, and motor and gear train engagement are deceleration transmission, drives fuel gas valve core to produce bigger moment.DC micromotor 81 can positive and negatively rotate, and with the effect requirement of the open and close function that adapts to gas valve, this gas valve is located at gas pipeline import department.

Gas-cooker temperature of the present utility model is controlled the device of closing combustion gas automatically and is adopted easy-to-dismount temperature sense, control assembly and electrically driven (operated) control valve, realized that automatic detection overtemperature, automatic control braking closes the purpose of combustion gas, avoided overtemperature that food is burnt fully, even the danger of initiation fire, and simple in structure, need not destroy the gas-cooker structure, set up conveniently, characteristics esy to use, safe and reliable

Description of drawings

Fig. 1 is the utility model control circuit figure

Fig. 2 is that the utility model is connected one of structural representation on the gas-cooker

Fig. 3 be the utility model be connected structural representation on the gas-cooker two

Fig. 4 is the utility model arrangement of temperature sensor figure

Specific implementation method

The utility model embodiment is with reference to Fig. 1, Fig. 2, it is by gas pipeline 1, ignition switch and manual temperature control valve (TCV) 2, in the system that gas-cooker that burner 3 constitutes and pot body 4 are formed, added and comprised temperature sensor 5, thermometer 6, relay 7, motor-operated control valve 8, the gas-cooker temperature that power supply 9 constitutes is controlled the device of closing combustion gas automatically, the heat-transfer area of its temperature sensor 5 closely posts on pot body 4, and can make things convenient for demolition, temperature sensor 5 output cut-in temperature tables 6, the output of the coil jointing temp table 6 of

relay

7,7 liang of groups of

relay contact

71,72 contact arm connects motor 81 two ends, the normally closed of two groups of contacts just connecing its power supply 9 with often opening to intersect, negative two ends, one group of contact series electrical brake control valve 8 wherein, this motor-operated control valve 8 is provided in a side of on ignition switch and the manual temperature control valve (TCV) 2, and certainly motor-operated control valve 8 also can be provided in a side of on as shown in Figure 3 the gas-cooker air inlet pipe.

Fig. 4 is the utility model temperature sensor 5 structure charts, it is made of the clip of a built-in thermal resistor, in the endoporus of blade of a sword fish folder circle handle, put into a thermal resistor, this thermal resistor is closely to contact with its installation circular hole, draw with the outer flexible circuit conductor that is with wire netting at the thermal resistor two ends, and this can have protective hot radiation effect preferably.Temperature sensor adopts clip structure, can be convenient to conduct heat and demolition on the pot body, and is simple, convenient.

The utility model at first is that its temperature sensor is clipped on pot body in use, for example, can be clipped on the edge of pot body or on the pot cover, then, according to the temperature that common food is hotted plate required time, preset is provided with Temperature numerical on thermometer; Second step is identical with the ignition operation method of general gas kitchen range, opens ignition switch, and combustion gas is sent to the air inlet of motor switch temperature control valve by gas pipeline, and at this moment this valve is in the combustion gas opening state and makes its combustion gas enter burner smoothly to burn.

When the temperature of hotting plate rises when reaching that preset is provided with Temperature numerical on the thermometer, built-in its resistance of thermal resistor of temperature sensor drop to thermometer on preset that Temperature numerical is set is identical, the relay adhesive, its two groups of normally-closed contacts transfer normally opened contact to, the power connection of the positive veer of motor, drive spool and close combustion gas, extinguish gas-cooker automatically.Thereby, effectively avoid the too high food that causes of gas-cooker ignition temperature to burn, and protection pot body burns out.

If, need open cooking stove burning once more, still the gas-cooker method of operating with common is identical, its ignition switch " closed " reset, at this moment, switch 21 contactings in the control circuit, because gas-cooker is in the brennschluss state, temperature of boiler reduces, and the resistance of the thermal resistor of temperature sensor rises, and relay discharges, two groups normally opened contact is returned as the normally closed contact that is, the power connection of motor reverse directions, making its gas-cooker is to be in the state of waiting for igniting, has finished preparation.The ignition operation of opening cooking stove burning once more repeats preceding method and gets final product.

When the utility model normality is used, power supply power consumption hardly, only when overtemperature, its resistance of thermal resistor descends and makes its relay adhesive just consume a small amount of power supply energy, so power consumption is economic.Owing to adopt battery powered mode, also be not subjected to the influence of grid power blackout, therefore, safe ready.

Claims

1. the device of a gas-cooker temperature control automatic self-closing gas, it is characterized in that: it comprises temperature sensor, thermometer, relay, motor-operated control valve, power supply, temperature sensor and cooking-vessel flexibly connect, its heat-transfer area and cooking-vessel detection zone fit, temperature sensor output cut-in temperature table, the output of the coil jointing temp table of relay, the contact arm of two groups of contacts of relay connects the motor two ends, the normally closed of two groups of contacts connects the positive and negative two ends of its dc source with often opening to intersect, wherein one group of contact series electrical brake control valve.

2. the device of a kind of gas-cooker temperature control automatic self-closing gas according to claim 1, it is characterized in that: temperature sensor is that the clip of built-in thermistor constitutes, it adopts blade of a sword fish to press from both sides in the endoporus of circle handle and puts into a thermistor, this thermal resistor is closely to contact with its installation circular hole, and draw with the outer flexible cord that is with wire netting at the thermistor two ends.

3. the device of a kind of gas-cooker temperature control automatic self-closing gas according to claim 1, it is characterized in that: motor-driven valve is to be made of DC micromotor, gear train, fuel gas valve core, motor and gear train engagement are deceleration transmission, fuel gas valve core is by Motor Drive, and this motor-driven valve is located at gas pipeline import department.