Gas cooker capable of outputting valve rod rotation angle electric signals of gas valve in contactless mode

Abstract

The invention discloses a gas cooker capable of outputting valve rod rotation angle electric signals of a gas valve in contactless mode. A touch component is arranged on a valve rod of the gas valve, a magnetic body is installed on the head of the touch component, a corresponding hall sensor is installed at a fixed position for detecting rotation angles of the magnetic body, the magnetic body is in a shape of an Archimedes spiral, and a central axis of the Archimedes spiral and the axis of the valve rod are coincided. The fixed position of the hall sensor is close to the outer surface of the far end of the Archimedes spiral, a position of the gas valve corresponding to the fixed position of the hall sensor is a closing position of the valve, the gas cooker is further provided with a reed switch, and the reed switch is arranged at a position adjacent to the end of the Archimedes spiral far away from the hall sensor. The gas cooker capable of outputting valve rod rotation angle electric signals of the gas valve in contactless mode has the advantages of being simple in structure, good in touch, safe, reliable and long in service life.

Description

technical field [0001] The invention relates to a gas cooker, in particular to a gas cooker which controls a range hood through a gas valve. Background technique [0002] At present, there is an open technology for the linkage between the switch of the oil fume fan and the gas valve of the gas stove. Most of them use contact switches to control the fan. The oil fume exhaust fan works, but the speed of the oil fume exhaust fan cannot be adjusted. Therefore, when the gas stove is turned on to a low fire, the oil fume exhaust fan cannot be adjusted. Large, high-current contact control mode, it is easy to cause an explosion when there is a gas leak in the pipe joint of the embedded cooker. Using infrared and thermocouple sensors to detect flames is complicated, costly, and easy to damage, and the maintenance cost is also quite high. Some range hoods are equipped with temperature sensors or smoke sensors to detect oil smoke conditions, because the sensors are often If it is ful...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are many types of rotation angle sensors, such as optical rotary encoder type, electromagnetic induction type, coil induction type, capacitive type, potentiometer type, resistive type, etc., but how to collect the rotation angle of the measured object? Angle, different rotation angle sensors have different specific technical solutions, and the mechanical connection between the measured object and the rotation angle sensor is also different due to the different types of sensors. According to the disclosed content of the utility model, the technical solution is to use the potentiometer The rotation angle is obtained in the form of type and resistance type, which also adopts a contact technology solution, and there is also the life problem of mechanical wear and tear.

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