CN2195052Y

CN2195052Y - Multifunctional protector for gas cooker

Info

Publication number: CN2195052Y
Application number: CN 94203228
Authority: CN
Inventors: 娄英超
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-07
Filing date: 1994-02-07
Publication date: 1995-04-19
Anticipated expiration: 2004-02-07

Abstract

The utility model provides a device for controlling burn, comprising an electromagnetic valve, a timer, a sensor and an on-switch. The sensor is an electric thermocouple and its two conducting wires are connected with the electromagnetic coil. The timer is mechanical and jointed between the electric thermocouple and the electromagnetic coil in series. The interior of the valve body of the electromagnetic valve is provided with two cavities and the middle of the cavity is perforated, and the two cavities are respectively provided with a fuel gas inlet. The interior of one cavity is provided with an electromagnetic valve composed of an electromagnet, a coil, a pole piece, a mounting and a mounting spring. The interior of the other cavity is provided with an on-switch composed of a thimble, a handgrip, a thimble reset spring and a sealing strip. The utility model has various protection functions of timing, time limiting, automatic gas-cutting for unexpected flameout, etc.

Description

Multifunctional protector for gas cooker

The utility model relates to a kind of device of controlling burning.

With the immediate prior art scheme of the utility model be that the patent No. is 90102374 automatic control and alarm safety device for fuel gas (the April 29 nineteen ninety day for announcing).This device is made up of light sensor, control circuit, timer, alarm and magnetic valve.In the time of can realizing that kitchen range flame extinguishes because of accident, close automatically, report to the police and function regularly.The realization of its various functions and action drives by battery fully, and not only its power consumption is bigger, and its security performance is unreliable, and especially when the energy shortage of battery, startup will become a difficult problem.Light sensor wherein only plays a kind of effect of switch, also be the core of its circuit, but the environment for use of stove and accessory is unsatisfactory, the quality of no matter protecting, and the pollution of its greasy dirt flue dust is difficult to avoid, and the accuracy of sensor, the degree of accuracy are difficult to guarantee.

The purpose of the utility model is to provide gas furnace multi-function protector a kind of simple in structure, safe and reliable.

The purpose of this utility model is achieved in that it is made up of magnetic valve timer, sensor and starting switch.Sensor is that thermocouple, its two leads are connected with the electromagnet coil of magnetic valve.Timer is a mechanical timer, and it is serially connected with between thermocouple and the electromagnet coil.The chambeies that connect in the middle of two are arranged in the valve body of magnetic valve, have fuel gas inlet on the chamber, have gas outlet on another chamber, the magnetic valve that mounting that setting is linked to each other with pole piece by electromagnet, electromagnet coil, pole piece in chamber and mounting back-moving spring are formed.The starting switch of being made up of thimble, handle, thimble back-moving spring and diaphragm seal is set in another chamber.

The advantage of the utility model is: be sensor with the thermocouple, not only can play the effect of a switch, and the thermoelectrical potential of leaning on its to produce makes electromagnet produce electromagnetic force, each resetting-mechanism is realized by spring, timer is a mechanical type, be its unlatching, close and control, all power supply need be set, not only can reduce its use cost, and it is safe and reliable, the utility model can be realized can closing source of the gas automatically when the stove and accessory that is burning causes non-normal flameout because of wind, excessive pot or other accident; Can select function regularly, also can set up functions such as flame-out warning.Can increase security and the practicality of using combustion gas.It is simple in structure, and is not fragile, long service life.

Fig. 1 is the structural representation of preferred embodiment of the utility model;

Fig. 2 is the circuit diagram that has the optimum implementation of warning device.

For example the utility model is done detailed description below in conjunction with accompanying drawing:

Timer 2 is installed on the valve body, two chambeies that connect are mutually arranged in the valve body, electromagnet coil on the electromagnet 14, pole piece 13, the mounting 12 that links to each other by bar with pole piece 13 and the magnetic valve that is enclosed within mounting back-moving spring 11 compositions on the bar are set in the chamber by electromagnet 14.Mounting can seal mutually with the through hole between two chambeies.Be provided with by thimble 10 in another cavity, be connected in diaphragm seal on the thimble 10, be enclosed within the thimble back-moving spring 19 on the thimble 10, the starting switch that handle 7 is formed.Handle 7 front ends contact with diaphragm seal by handle back-moving spring 20.Handlebar 9 overcoats have the inclined-plane medicine 18 of helical orbit, also have corresponding helical orbit on the valve body.Have the driving lever 8 that stretches out helical orbit on the handlebar 9, driving lever 8 is connected with the main shaft of timer by gear 6,21,22.Thermocouple is installed on the combustion zone of stove and accessory, and its two leads and electromagnet coil join.Thimble 10 reaches are with the through hole of mounting 12 tops from two cavitys when twisting handle 7, and fuel gas path is opened, and can light stove and accessory.Driving lever 8 promotes the gear driven timer 2 along the helical orbit reach simultaneously, makes it be in definition status, and after stove and accessory was lighted, thermocouple became electric energy with the thermal power transfer on the stove and accessory, and electromagnet produces electromagnetic force, adhesive pole piece 13.Through after a while, after general 30～60 seconds, timer starts time-delay and puts in place, and driving lever 8 is along inclined-plane track pushed home, and thimble is owing to the disappearance of outer power of enforcement, and spring is with its pushed home, and gas circuit will be in normal breakthrough status.Timer its normally closed contact 4 usually engages.When needing regularly, timer is got to required time location, timer is started working, and to regulation in limited time, timer is opened the solenoid circuit normally closed contact, cuts off circuit.Electromagnet is because instantaneous electromotive force is 0, and spring breaks away from pole piece and electromagnet, and mounting seals through hole, realizes self-extinguishing.When accident extinguishing, thermocouple is not because providing of thermal source is provided, and electromotive force descends rapidly, and the electromagnetic force in the electromagnet also descends thereupon, and when the critical point that drops to less than spring 11 power, pole piece will be thrown off with electromagnet, and mounting is shut gas circuit, realizes closing automatically.Can increase therein by news and ring oscillator-amplification circuit, the warning device that squealer and battery are formed is realized flame-out automatic warning function.

The utility model also can with the supporting use of ignition.

Claims

1; a kind of gas furnace multi-function protector; it comprises magnetic valve; the timing protector; sensor and starting switch; it is characterized in that: sensor is a thermocouple; its two leads are connected with the solenoid of magnetic valve; timer is a mechanical timer; it is serially connected with between thermocouple and the electromagnet coil; the chamber that connects in the middle of having two in the valve body of magnetic valve; have fuel gas inlet on the chamber; have gas outlet on another chamber; be provided with in the chamber by magnetic valve; electromagnetic valve coil; the magnetic valve that mounting that pole piece links to each other with pole piece and mounting back-moving spring are formed is provided with in another chamber by thimble; handle; the starting switch that thimble back-moving spring and diaphragm seal are formed.

2, gas furnace multi-function protector according to claim 1; it is characterized in that: time-delay mechanism is set on starting switch; this time-delay mechanism is the inclined-plane cover that has helical orbit at handle jacket; also have corresponding helical orbit on the valve body; the driving lever that stretches out helical orbit is arranged on the handle, and driving lever links to each other with the main shaft of timer by gear.

3, gas furnace multi-function protector according to claim 1 and 2 is characterized in that: it also comprises the warning device of being made up of news sound oscillator-amplification circuit, squealer and battery.