Accidental flameout protecting valve for gas stove

Abstract

The invention discloses an accidental flameout protecting valve for a gas stove. The accidental flameout protecting valve comprises a gas outlet pipe, a gas spraying assembly and a gas inlet nozzle, wherein the gas outlet pipe is integrally formed at the upper end of the main valve body; the gas spraying assembly is connected onto the gas outlet pipe; the gas inlet nozzle is integrally formed at the lower end of the main valve body; a cork hole for communicating the gas inlet nozzle with the gas outlet pipe is formed in a sealing bin of the main valve body; a cork is inserted into the cork hole; one end of the cork is fixedly connected to a knob switch on the outer end face of the main valve body; the other end of the cork is in meshed connection with a ratchet arranged in a port of the cork hole; one end of a rotary spring is connected onto the ratchet; the other end of the rotary spring is connected onto a cylindrical pin positioned in the sealing bin of the main valve body; the outer circumference of the ratchet is connected with an automatic rotating mechanism which is positioned in the sealing bin, can drive the cork to automatically cut off the conduction of the gas inlet and the gas outlet sequentially through the rotary spring and the ratchet and enables the knob switch to reset to a closing state; a thermal sensor which can be used for automatically controlling the automatic rotating mechanism to act is connected to the outer side of the main valve body through a connecting flange. According to the accidental flameout protecting valve disclosed by the invention, the valve of the gas stove can be closed by automatic rotating and gas leakage caused by accidental flameout is effectively prevented.

Description

technical field [0001] The invention relates to a gas stove accidental flameout protection valve. In particular, it relates to a gas stove accidental flameout protection valve which can automatically turn the valve knob to the closed position when the gas stove is prevented from being accidentally turned off or gas leaks because the valve is not fully closed. Background technique [0002] As a clean and environmentally friendly energy source, combustible gas is widely used in industrial and agricultural production and residents' lives. In the process of use, disasters such as poisoning, fire and explosion caused by gas leakage occur from time to time, and the prevention of gas leakage has become a worldwide research topic. [0003] People have carried out long-term exploration for this reason, and proposed various schemes. The inventor once proposed Chinese utility model patent ZL0023422.3 automatic security gas hose, Chinese utility model patent ZL201220345114.6 provided ...

AI Technical Summary

Problems solved by technology

However, due to the continuous development of new technologies, the existing gas stove accidental flameout protection valve is no longer suitable for the existing gas stove technology that is changing day by day, and must be updated with the times.

[0004] The flameout protection device for gas stoves in the prior art uses thermocouples as start-up control switches both at home and abroad. Since thermocouples are made of two kinds of metals, they are not resistant to flame ablation. Once the metal chain structure is disordered due to ablation, it will not There will be a potential difference, and the switching function will be lost. In particular, there will be no obvious response after losing the automatic shutdown function, so there are still potential safety hazards

Another gas stove valve technology controlled by a thermal sensor is not suitable for today's technical needs

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