Gas appliance double-coil electromagnetic valve and thermocouple connecting structure with good anti-disengagement property

Abstract

The invention relates to a gas appliance double-coil electromagnetic valve and thermocouple connecting structure with a good anti-disengagement property. The connecting structure comprises an electromagnetic valve connecting part, a thermocouple connecting part, a thermocouple assembly and a ground wire terminal. The electromagnetic valve connecting part comprises a connecting support, a pin assembly and a base. The thermocouple connecting part comprises a connecting plastic cap and a core wire terminal assembly. The ground wire terminal is composed of a conductive sleeve and a wire pressing elastic piece. A temperature sensing head element and a temperature sensing shell of the thermocouple assembly are electrically connected with the pin assembly and the wire pressing elastic piece correspondingly. The conductive sleeve sleeves the connecting support. Clamping arms are arranged on the connecting plastic cap, and accordingly, an annular limiting groove is formed in the base. On one hand, the good grounding property of the thermocouple assembly is ensured on the premise of omitting the process of installing screws on a ground wire; on the other hand, the problem that wires of a plurality of thermocouples are twisted together during batched assembling is solved; and furthermore, it can be avoided that the electromagnetic valve connecting part is disengaged from the thermocoupleconnecting part.

Description

technical field [0001] The invention relates to the technical field of gas appliance manufacturing, in particular to a gas appliance double-coil electromagnetic valve and thermocouple connection structure with good detachment performance. Background technique [0002] The gas solenoid valve is a safety emergency cut-off device for gas pipelines. It can be connected with the gas leakage alarm system or with fire protection and other intelligent alarm control terminal modules to realize on-site or remote automatic / manual emergency cut-off of the gas source to ensure gas safety. When an accidental flameout or harmful strong vibration occurs, the solenoid valve will automatically close. The gas flameout protection devices on the market are mainly composed of thermocouple connection parts, solenoid valve connection parts and thermocouple components. The connecting part of the solenoid valve includes a connecting bracket and a pin assembly. The thermocouple assembly can generate...

AI Technical Summary

Problems solved by technology

However, in the actual installation process of the gas appliance, there are the following problems: when the external force is applied, the connection part of the thermocouple is very easy to fall out of the connection part of the solenoid valve

In this way, it will inevitably lead to the failure of the electrical connection between the pin assembly and the temperature-sensing head element and the electrical conduction between the ground wire terminal and the connection part of the solenoid valve, so that a current loop cannot be formed, which will affect the normal use of the gas appliance.

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