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Gas range with automatic reigniting function after accident fire cut-off

A technology of re-ignition after flameout, applied in the field of gas stoves, can solve problems such as complex structure, high cost, and inaccurate judgment, and achieve the effect of simple design structure and accurate judgment

Active Publication Date: 2008-09-24
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since each furnace head is equipped with two thermocouples in this design, the cost is high, the structure is complicated, and the judgment is not accurate enough

Method used

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  • Gas range with automatic reigniting function after accident fire cut-off
  • Gas range with automatic reigniting function after accident fire cut-off
  • Gas range with automatic reigniting function after accident fire cut-off

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Experimental program
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Effect test

Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1~ image 3 As shown, it is a gas stove with the function of automatic re-ignition after accidental flameout, including: a plug valve 1, a normally open first micro switch K1 that is closed and turned on when the valve stem 11 of the plug valve is pressed down (i.e. 2 shown in Fig. 2), the igniter controlled by the first microswitch K1, the second microswitch K2 (i.e. shown in Fig. 2 3), the relay K3 connected in parallel with the first microswitch K1, the flame detection circuit with the thermocouple RD as the temperature measuring element and the control circuit with the microprocessor MCU as the core device; wherein the microprocessor MCU specifically adopts HT46RS1, Other chips of the same type can also be used, such as ESPIC30F2011, etc.;

[0017] Wherein the positive pole of the thermocouple RD is connected with the power ...

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Abstract

The fuel gas burner includes parts: plug valve type ignition switch; normal open type first switch is closed to turn on when the ignition switch is pressed down; igniter controlled by the first switch; flame detection circuit and control circuit. The output end of the flame detection circuit is connected to first input end of the control circuit. Characters are that the invention also includes parts and structures: second switch is in use for sensing whether ignition switch has been rotated; controllable type third switch connected to the first switch in parallel; second switch is connected to second input end of the control circuit, and control part of third switch is connected to the output end of the control circuit. Using second switch to detect rotated state of plug valve and using the flame detection circuit to detect whether flame is crushed out, the invention ralizes relighting through third switch. Features are: simple and reliable design and accurate determination.

Description

technical field [0001] The invention relates to a gas stove, in particular to a gas stove with the function of automatically re-igniting after an accidental flameout. Background technique [0002] Most of the existing gas stoves are equipped with automatic protection devices for accidental flameout. There are three main types: heat-sensitive safety protection devices, thermocouple safety protection devices and ion induction safety protection devices, among which thermocouple safety protection devices are most used. Protection system, this system uses the different performances of two metals with different thermal expansion coefficients of thermocouples when sensing temperature to sense whether the flame is extinguished and shut down the gas stove. Although this system has been able to control the cut-off time of the gas source to about 40 seconds, there are still hidden dangers of gas leakage. Users often don't notice this, thinking that the gas stove has been turned off, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C3/12G05B19/048G05B9/00
Inventor 茅忠群
Owner NINGBO FOTILE KITCHEN WARE CO LTD