Fuel gas valve for assisting gas supply and ignition

Abstract

The invention relates to a fuel gas valve for assisting gas supply and ignition, which comprises a valve body provided with a solenoid valve cavity and a valve element cavity, wherein a gas inlet and a gas outlet are formed in the side wall of the valve body, a solenoid valve is arranged in the solenoid cavity, a valve element is arranged in the valve element cavity, and a valve rod is arranged on the valve element in a penetrating mode. The fuel gas valve is characterized in that a steeped hole is formed in the valve element, and is provided with a large fire hole and at least one small fire hole in the periphery wall, the side wall of the small-hole part of the stepped hole is provided with an assisting gas supplying hole communicated with the large fire hole, a first seal ring is arranged at the lower end of the valve rod, is downwards separated from the stepped hole to enable the assisting gas supplying hole to be communicated with the valve element cavity under a valve element moving down state, and forms seal together with the large-hole part of the stepped hole under the reset state of the valve element, and a permanent lighting fire port directly communicated with the valve element cavity is formed in the side wall of the valve body. During ignition, fuel gas is communicated with the gas outlet by the large fire hole as well as the assisting gas supplying hole, thus supplying sufficient fuel gas during ignition and ensuring the success rate of ignition.

Description

technical field [0001] The invention relates to a safety valve for a gas cooker, in particular to a gas valve for assisting gas supply and ignition. Background technique [0002] Gas valves in various gas appliances are manually operated valves that control the supply of gas sources. Ordinary gas valves generally include a valve body with an air inlet passage and an air outlet passage. The valve body is provided with a rotatable valve core. The valve stem that drives the valve core to rotate has a slot on the valve core and a connecting post on the side wall of the valve stem. The lower end of the valve stem holds a spring that keeps the valve stem moving up and out of the connection with the valve core. Located in the spring cavity on the spool, the side wall of the ventilation chamber of the spool is provided with a large fire hole and a small fire hole for communicating the air intake passage and the air outlet passage. Press down on the valve stem, insert the connectin...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the successful ignition of the gas valve, it is necessary to have a large gas output during ignition. Therefore, when igniting, the valve core can only be ignited when it is turned to the high fire position. When the existing gas valve is actually ignited, even if it is turned to the high fire position. The gas output cannot meet the ignition requirements well, and sometimes it is not easy to be ignited quickly, and it needs to be repeatedly ignited. If only the aperture of the large fire hole is increased, although the success rate of ignition can be improved, it will cause the gas valve to lose fire in the process of high fire. Excessively large, resulting in waste of gas

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