CN116336506A - Ignition anti-explosion system of gas stove and gas stove - Google Patents

Abstract

The invention discloses a gas stove ignition explosion-proof system and a gas stove, wherein the gas stove ignition explosion-proof system comprises a blower and a thermocouple, the blower is connected with a power supply, a pulser is respectively connected with the thermocouple and the blower, the pulser outputs an ignition pulse signal to an ignition needle when ignition operation is detected, and outputs periodic potential to the blower and the thermocouple, the thermocouple outputs first thermoelectric potential lower than a closed threshold when flame is not detected, the blower periodically takes electricity from the power supply to blow air to a burner main body when the pulser outputs the ignition pulse signal and the thermocouple outputs the first thermoelectric potential, the blower periodically blows air to the burner main body when flame ignition failure is not detected in the ignition process of the gas stove, the problem of ignition explosion caused by gas accumulation in the ignition failure is solved, redundant gas can be periodically blown away through the blower when ignition failure, the gas accumulation is avoided, and the safety performance of the gas stove is improved.

Description

Ignition anti-explosion system of gas stove and gas stove

Technical Field

The invention relates to the technical field of gas stove safety, in particular to a gas stove ignition anti-explosion system and a gas stove.

Background

The prior high-energy-efficiency gas cooker technology with the energy-collecting disc is widely applied, and a relatively closed burner cavity can be formed after the gas cooker with the larger energy-collecting disc is matched with a cooker, so that the entering amount of secondary air and the diffusion speed of hot flue gas can be reduced, and the efficiency of the gas cooker is improved.

Because the energy-efficient gas cooker forms a relatively closed burner cavity, gas can accumulate in the cavity under some abnormal combustion conditions, for example, when an ignition button is pressed for ignition failure, the gas channel is opened during ignition, the gas which is not ignited accumulates in the relatively closed cavity, and when the gas in the cavity is ignited, deflagration can occur, so that potential safety hazards exist.

Disclosure of Invention

The invention provides a gas stove ignition anti-explosion system and a gas stove, which are used for solving the problem of deflagration in the ignition process of the gas stove.

In a first aspect, an embodiment of the present invention provides an ignition anti-explosion system for a gas stove, where the gas stove includes a burner main body, an ignition needle, a pulser, and a power supply, the power supply is electrically connected to the pulser, the ignition needle is disposed on the burner main body, the pulser is electrically connected to the ignition needle, and the ignition anti-explosion system for a gas stove includes a blower for blowing air to the burner main body, and a thermocouple disposed on the burner main body;

the blower is connected with the power supply;

the pulser is electrically connected with the thermocouple and the blower respectively;

the pulser outputting an ignition pulse signal to the ignition needle upon detection of an ignition operation, and outputting a periodic potential to the blower and the thermocouple;

the thermocouple outputs a first thermoelectric voltage lower than a preset closed threshold value when no flame is detected;

the blower periodically draws power from the power supply when the pulser outputs an ignition pulse signal and the thermocouple outputs the first thermoelectric voltage, and the blower blows air to the burner body.

Optionally, the blower is provided with a motion induction switch, the motion induction switch is respectively connected with the pulser and the thermocouple, the motion induction switch is closed when the pulser outputs an ignition pulse signal and the thermocouple outputs the first thermoelectric voltage, and the power supply supplies power to the blower.

Optionally, when the pulser outputs the ignition pulse signal and the thermocouple outputs a second thermoelectric voltage, the blower is turned off, wherein the second thermoelectric voltage is a thermoelectric voltage output when the thermocouple detects a flame.

Alternatively, the blower is turned on and turned off after a preset first time period when the pulser is switched from outputting the ignition pulse signal to stopping outputting the ignition pulse signal and the thermocouple outputs the first thermoelectric voltage.

Optionally, after the pulser stops outputting the ignition pulse signal, when the thermoelectric voltage output by the thermocouple changes from a second thermoelectric voltage to the first thermoelectric voltage, the blower is turned on and turned off after a preset second period of time, wherein the second thermoelectric voltage is the thermoelectric voltage output when the thermocouple detects a flame.

Optionally, the burner further comprises a plug valve and an electromagnetic valve, wherein the plug valve and the electromagnetic valve are arranged on an air inlet pipeline of the burner main body, and the plug valve is electrically connected with the pulser;

the plug valve is used for controlling the pulser to output the ignition pulse signal and the periodic potential when being triggered by pressing, controlling the electromagnetic valve to be opened, and enabling the air inlet pipeline to conduct and output fuel gas to the burner main body.

Optionally, the thermocouple is electrically connected with the electromagnetic valve, and the electromagnetic valve is used for being opened when the thermocouple outputs a second thermoelectric voltage higher than the closed threshold value or when the pulser outputs an ignition pulse signal.

Optionally, the thermocouple is electrically connected with the electromagnetic valve, and the electromagnetic valve is used for being closed when the thermoelectric voltage output by the thermocouple changes from a second thermoelectric voltage to the first thermoelectric voltage, wherein the second thermoelectric voltage is the thermoelectric voltage output when the thermocouple detects flame.

Optionally, the burner body is provided with an air outlet, the blower is provided with a blower connection pipe, and the blower connection pipe is communicated with the air outlet.

In a second aspect, an embodiment of the present invention provides a gas stove, where the gas stove includes a gas stove ignition deflagration prevention system according to any one of the first aspects.

The gas stove ignition anti-deflagration system comprises a blower and a thermocouple, wherein the blower is used for blowing the burner main body, the blower is connected with a power supply, the pulser is electrically connected with the thermocouple and the blower respectively, the pulser outputs an ignition pulse signal to an ignition needle when ignition operation is detected, and outputs periodic potential to the blower and the thermocouple, the thermocouple outputs first thermoelectric voltage lower than a preset closed threshold when flame is not detected, the blower periodically takes electricity from the power supply when the pulser outputs the ignition pulse signal and the thermocouple outputs the first thermoelectric voltage, the blower blows air to the burner main body, the problem that fuel gas is accumulated in a closed cavity of the burner to cause ignition deflagration when flame ignition failure is achieved, redundant fuel gas can be periodically blown away by the blower when ignition failure occurs in the ignition process, the occurrence of ignition deflagration due to the fuel gas accumulation is avoided, and the safety performance of the gas stove is improved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a gas stove ignition anti-explosion system according to an embodiment of the present invention;

FIG. 2 is a logic diagram of a gas range ignition anti-explosion system in one embodiment of the invention;

in the accompanying drawings:

1. a burner body; 2. a blower; 21. a blast connection pipe; 22. a switching signal receiving line; 3. a thermocouple; 31. a thermoelectric voltage output line; 4. an ignition needle; 5. a pulser; 51. a periodic potential output line; 52. an ignition pulse output line; 6. a plug valve; 61. a pulser control line; 7. an electromagnetic valve; 8. a power supply; 81. a pulser power supply line; 82. blower power supply line.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

Fig. 1 is a schematic structural diagram of an ignition deflagration prevention system of a gas stove according to an embodiment of the present invention, and as shown in fig. 1, the gas stove according to an embodiment of the present invention may include a burner main body 1, an ignition needle 4, a pulser 5, and a power supply 8.

The gas stove according to the embodiment may be one of a household gas stove, a commercial gas stove and an industrial gas stove according to the usage classification, may be a liquefied gas stove or a natural gas stove according to the gas source classification, and may also be a gas stove using combustible gas such as methane and hydrogen as a gas source, and the type of the gas stove is not limited in this embodiment.

The burner body 1 may be a device where gas burns, namely a hearth and a burner, and the burner body 1 is usually provided with various shapes of gas outlets and corresponding cavities, and the burner body 1 is also provided with an ignition needle 4. The power supply 8 may be a battery, and the voltage specification output by the power supply 8 may be 1.5V, 3V, etc. so as to be able to use standard batteries of various types on the market, and the power supply 8 supplies the pulser 5 with electric energy.

The pulser 5 may be capable of providing a high-voltage pulse signal to the ignition needle 4 so that the ignition needle 4 generates an electric spark to ignite the gas output in the burner main body 1, wherein the pulser 5 may output the high-voltage ignition pulse signal when an ignition operation is detected, alternatively, the ignition operation may be an operation of igniting the gas in any manner, in an example, an ignition button may be provided on the gas stove, and the ignition button may be a mechanical button, such as an ignition button capable of being pressed and rotated, or may be a touch ignition button, or a virtual ignition button displayed in a display screen, or an ignition operation performed by identifying a gesture, or the like, or may be an ignition operation of a user remotely controlling the gas stove through a mobile terminal, and the ignition operation of the gas stove is not limited in this embodiment.

As shown in fig. 1, the power supply 8 is electrically connected to the pulser 5 through a pulser power supply line 81, the ignition needle 4 is provided on the burner body 1, and the pulser 5 is electrically connected to the ignition needle 4 through an ignition pulse output line 52, so that when a user performs an ignition operation, the pulser 5 converts the electric energy of the power supply 8 into an ignition pulse signal to output to the ignition needle 4, and the ignition needle 4 generates an electric spark under the action of the ignition pulse signal to ignite the fuel gas output from the burner body 1.

The ignition deflagration prevention system of the gas stove of the embodiment comprises a blower 2 for blowing the burner main body 1 and a thermocouple 3 arranged on the burner main body 1, wherein the blower 2 is electrically connected with a power supply 8, and the pulser 5 is respectively electrically connected with the thermocouple 3 and the blower 2.

Specifically, as shown in fig. 1, the burner body 1 is provided with a plurality of air outlets 11, the blower 2 is provided with a blower connection pipe 21, one end of the blower connection pipe 21 is connected to the blower 2, and the other end is communicated with the air outlets 11, so that when the blower 2 is turned on, the blower 2 outputs air to the air outlets 11 through the blower connection pipe 21, and the air output from the air outlets 11 blows off the surplus fuel gas retained in the burner body 1. The blower 2 is electrically connected to the power supply 8 through a blower power supply line 82 to take power from the power supply 8, and after the pulser 5 outputs a periodic potential through the periodic potential output line 51, one path is electrically connected to the blower 2 through the switching signal receiving line 22, and the other path is electrically connected to the thermocouple 3 through the thermoelectric potential output line 31.

When the user performs an ignition operation, the pulser 5 detects the ignition operation, outputs an ignition pulse signal to the ignition needle 4 through the ignition pulse output line 52, and outputs a periodic potential to the blower 2 through the periodic potential output line 51, the switching signal receiving line 22, and outputs a periodic potential to the thermocouple 3 through the thermoelectric potential output line 31, wherein the periodic potential may refer to a potential output according to a preset period, and in one example, the period of the periodic potential may be equal to or not equal to the period of the ignition pulse signal, and the voltage of the periodic potential may be equal to or not equal to the voltage of the ignition pulse signal.

In this embodiment, the thermocouple 3 outputs different thermoelectric voltages at different temperatures, which results in a change in the periodic potential input to the blower 2 through the switching signal receiving line 22, i.e., the thermocouple 3 outputs a first thermoelectric voltage lower than a preset closed threshold when it is not detected that the flame is not heated during ignition, so that the potential of the periodic potential input to the blower 2 through the switching signal receiving line 22 is lower than the closed threshold, whereas the thermocouple 3 outputs a second thermoelectric voltage higher than the preset closed threshold when it is detected that the flame is heated during ignition, wherein the closed threshold may be a potential value that causes the gas input pipe of the gas stove to be closed.

When the air blower 2 outputs an ignition pulse signal at the pulser 5 and the thermocouple 3 outputs a first thermoelectric force, the power is periodically taken from the power supply 8, the air blower 2 blows air to the burner main body 1, specifically, when the pulser 5 outputs the ignition pulse signal to indicate that the gas stove is in an ignition stage, if the thermocouple 3 outputs the first thermoelectric force, which indicates that the thermocouple 3 does not detect flame, the ignition failure is caused, in order to avoid the gas accumulation in the burner main body 1, the air blower 2 is conducted with the power supply 8 under the action of the first thermoelectric force, the power is taken from the power supply 8 to be turned on for blowing air to the burner main body 1, and because the pulser 5 outputs periodic potential, the air blower 2 and the power supply 8 are also periodically conducted, namely, in the ignition stage, if the gas is not ignited, the air blower 2 intermittently blows air to the burner main body 1, on one hand, the gas accumulation and the explosion caused by the ignition failure in the ignition stage can be avoided, and the safety performance of the gas stove is improved, on the other hand, the condition that the air blower 2 continuously blows too much gas is prevented from being blown by periodic blowing, and the air and the gas cannot be ignited due to poor proportioning is avoided.

In one embodiment, the blower 2 may be provided with an action-inducing switch (not shown) electrically connected to the pulser 5 and the thermocouple 3, respectively, the action-inducing switch being closed when the pulser 5 outputs an ignition pulse signal and the thermocouple 3 outputs a first thermoelectric voltage, and the power supply 8 supplying power to the blower 2. The motion sensing switch may be various electronic switches such as a triode and a MOS tube, when the motion sensing switch is turned on, the blower 2 is turned on with the power supply 8, when the motion sensing switch is turned off, the blower 2 is not turned on with the power supply 8, that is, the motion sensing switch is provided with an input end, an output end and a control end, the input end is connected with the power supply 8, the output end is connected with the blower 2, the control end is electrically connected with the pulser 5 and the thermocouple 3, as shown in fig. 1, the control end of the motion sensing switch provided in the blower 2 is connected with the pulser 5 through the switch signal receiving line 22 and the periodic potential output line 51, and is connected with the thermocouple 3 through the switch signal receiving line 22 and the thermoelectric potential output line 31, so that when the ignition failure thermocouple 3 does not detect the first thermoelectric potential with the flame output lower than the closed threshold, the motion sensing switch is turned on with the power supply 8, the blower 2 is turned on with the burner main body 1, and the blower 2 is periodically turned on with the power supply 8 due to the periodic potential output by the pulser 1, the motion sensing switch is also periodically turned on with the power supply 8, and the blower 2 is periodically turned on with the burner main body 1. The blower 2 is controlled to be turned on and off by the action induction switch, a triode, a MOS tube and the like can be used as a switch, and the circuit is simple in structure and low in cost.

In yet another embodiment, the blower 2 may be provided with a controller, and a predetermined program is burned in the controller, so that the controller controls the blower 2 to be periodically turned on with the power supply 8 when the thermocouple 3 outputs the first thermoelectric voltage, and the embodiment does not limit the manner of controlling the blower 2 to be turned on with the power supply 8.

In one embodiment, when the pulser 5 outputs an ignition pulse signal and the thermocouple 3 outputs a second thermoelectric voltage, the blower 2 is turned off, wherein the second thermoelectric voltage is the thermoelectric voltage output when the thermocouple 3 detects a flame, that is, when the ignition stage is not finished, even if the user presses the ignition button pulser 5 to continuously output the ignition pulse signal, as the gas is already ignited to heat the thermocouple 3, the thermocouple 3 outputs the second thermoelectric voltage higher than the closed threshold, the blower 2 is turned off, so that the blower 2 is turned off without blowing after the gas is ignited, and normal combustion of the gas is ensured.

In one embodiment, when the pulser 5 is converted from outputting the ignition pulse signal to stopping outputting the ignition pulse signal and the thermocouple 3 outputs the first thermoelectric potential, the blower 2 is turned on and turned off after a preset first period, the first period may be equal to the period of the periodic potential, that is, the user continuously ignites and does not ignite the thermocouple 3 to output the first thermoelectric potential, and when the user stops igniting, the blower 2 may be turned on and turned off after the preset first period because the pulser 5 no longer outputs the pulse signal and the periodic potential, and the blower 2 may be provided with a controller, which may control the blower 2 to be turned off after the user continuously ignites and does not ignite the thermocouple 3 to output the first thermoelectric potential after the preset first period, or a motion sensing switch is provided on the blower 2 to realize the conduction of the blower 2 with the power supply 8, and a delay circuit (such as a delay circuit formed by capacitor charging and discharging) may be provided at the control end of the delay circuit to stop the pulse signal and the blower 2 after the user continuously ignites and does not ignite the first period 2 with the power supply 8, and the other pulse circuits are turned off, and the blower 2 can be turned off after the preset first period is stopped to turn on and the first period is stopped, and the pulse circuit is turned off, and the blower 2 is turned off by the delay.

In this embodiment, when the user continues to ignite and does not ignite to stop igniting, the blower 2 blows the air for the first period of time to blow away the gas retained in the burner body 1 by blowing, so as to avoid the gas retained in the burner body 1, and knocking occurs during re-ignition, thereby improving the safety performance of the gas stove.

In one embodiment, after the pulser 5 stops outputting the ignition pulse signal, when the thermoelectric voltage output by the thermocouple 3 changes from the second thermoelectric voltage, which is the thermoelectric voltage output when the thermocouple 3 detects a flame, to the first thermoelectric voltage, the blower 2 is turned on and is turned off after a preset second period of time. Specifically, when the pulser 5 stops outputting the ignition pulse signal and the thermoelectric voltage output by the thermocouple 3 changes from the second thermoelectric voltage to the first thermoelectric voltage, it is indicated that the gas stove is accidentally turned off in the stage of normal combustion, the blower 2 can be controlled to blow the preset second duration, wherein the preset second duration of the blower 2 can be implemented by a hardware circuit or software in the controller, and the second duration of the blower 2 can be controlled to blow away the gas retained in the burner main body 1 by blowing when the gas stove is accidentally turned off during normal combustion, so that the gas is prevented from being retained in the burner main body 1, and deflagration occurs during re-ignition, thereby improving the safety performance of the gas stove.

As shown in fig. 1, in one embodiment, the ignition deflagration prevention system for gas stove further comprises a plug valve 6 and an electromagnetic valve 7, wherein the plug valve 6 and the electromagnetic valve 7 are arranged on an air inlet pipeline of the burner main body 1, the plug valve 6 is electrically connected with the pulser 5 through a pulser control line 61, the plug valve 6 is used for controlling the pulser 5 to output an ignition pulse signal and a periodic potential when being triggered by pressing, and controlling the electromagnetic valve 7 to be opened, so that the purpose of triggering the pulser 5 to output the ignition pulse signal and the periodic potential when being ignited through the mechanical plug valve 6 is achieved, and controlling the electromagnetic valve 7 to be opened for air supply is ensured, the synchronization of ignition operation and air supply is ensured, and the success rate of ignition is improved.

In one embodiment, the electromagnetic valve 7 is used for opening when the thermocouple 3 outputs the second thermoelectric voltage higher than the closed threshold, namely, after ignition, the thermocouple 3 is heated by flame, the electromagnetic valve 7 is controlled to be opened when the second thermoelectric voltage higher than the closed threshold is output, the control of the electromagnetic valve 7 is converted from the operation of ignition (such as pressing the plug valve 6) to the control by the thermocouple 3, and the gas combustion is realized, namely, the electromagnetic valve 7 is opened to deliver the gas to the burner main body 1.

Further, the electromagnetic valve 7 is used for closing when the thermoelectric voltage output by the thermocouple 3 changes from the second thermoelectric voltage to the first thermoelectric voltage, wherein the second thermoelectric voltage is the thermoelectric voltage output by the thermocouple 3 when the thermocouple 3 detects the flame, specifically, the thermoelectric voltage output by the thermocouple 3 changes from the second thermoelectric voltage to the first thermoelectric voltage, which indicates that the burner main body 1 changes from the burning state to the extinguishing state, for example, the heated liquid overflows to cause extinguishing, the thermocouple 3 is not heated, the thermoelectric voltage output by the thermocouple 3 changes from the second thermoelectric voltage to the first thermoelectric voltage, the electromagnetic valve 7 is closed, and the gas is stopped to be delivered to the burner main body 1, thereby realizing flameout protection.

To facilitate a clearer understanding of the ignition and deflagration prevention system of the gas cooker of the present embodiment, the logic of the ignition and deflagration prevention system is described below in conjunction with fig. 2.

As shown in fig. 2, the thermocouple 3 outputs a thermoelectric potential (second thermoelectric potential) when there is a flame, does not have a thermoelectric potential (first thermoelectric potential is 0) when there is no flame, opens when the plug valve is pressed, cancels the pressing or non-pressing closing, the pulser outputs a periodic potential when the plug valve is opened, and outputs a pulse to the ignition needle, the ignition needle ignites, the pulser breaks the periodic potential or does not have a potential when the plug valve is closed, the output pulse or does not have a pulse to the ignition needle is broken, and the ignition needle does not ignite.

Anti-deflagration logic (each logic is represented in line form in fig. 2) is described below in connection with each scenario:

1. and (3) an ignition stage:

1) When the user continues to press the plug valve (solid line) the solenoid valve opens, the pulser continues to output pulses to the ignition needle, and simultaneously outputs a periodic potential to the blower and thermocouple, which ignites.

If there is no flame on ignition (broken line), the thermocouple has no thermal potential, i.e. continuously pressing the scene of ignition, the blower blows intermittently, the thermocouple will receive periodic potential output to the solenoid valve to maintain the solenoid valve open.

When the scene of fire is continuously pressed and ignited, when flames (two-dot chain lines) exist, the thermoelectric couple outputs thermoelectric force, the blower does not act, and the thermoelectric couple outputs thermoelectric force to the electromagnetic valve after being heated, so that the electromagnetic valve is kept open.

2) When the user releases the plug valve (de-presses, dense dashed line), the pulser turns off the output pulse to the firing pin, and turns off the periodic potential to the blower, which fires out.

If the thermocouple is not ignited without flame (broken line), the thermocouple is not heated without thermal potential output, i.e. the scene of not igniting or releasing the hand without pressing the plug valve, the blower blows once (blows for a first time period), and since the thermocouple does not have thermal potential output, nor receives periodic potential output to the solenoid valve, the solenoid valve is closed.

When the scene of ignition and loosening hands is ignited, flames (two-dot chain lines) exist, the thermoelectric couple is heated and outputs thermoelectric potential, the blower does not act, and the thermoelectric potential output by the thermoelectric couple enables the electromagnetic valve to be kept open.

2. Stage after ignition:

1) When the hand is not released after ignition, or in the scene of a closed state, the thermocouple is free of thermal potential, the pulser does not pulse or disconnect pulses to the ignition needle, and periodic potential to the blower, the ignition needle is not ignited, the blower is not operated, and the electromagnetic valve is closed.

2) When the plug valve is not pressed (single-dot chain line), the pulse generator does not pulse or cuts off the pulse to the ignition needle, and no periodic potential to the blower, the ignition needle does not ignite, the electromagnetic valve is closed, if flame (double-dot chain line) exists, namely, a scene of normal combustion after ignition, the thermocouple is heated to output thermoelectric potential, the blower does not act, and the thermoelectric potential output by the thermocouple enables the electromagnetic valve to be opened.

3) In the normal combustion process, when the combustion is accidentally extinguished, the thermocouple is not heated, no thermal potential is output to the electromagnetic valve, the electromagnetic valve is closed, no fuel gas output stays in the burner main body due to the closing of the electromagnetic valve, and the blower does not blow.

The gas stove ignition anti-deflagration system comprises a blower and a thermocouple, wherein the blower is used for blowing the burner main body, the blower is electrically connected with a power supply, the pulser is electrically connected with the thermocouple and the blower respectively, the pulser outputs an ignition pulse signal to an ignition needle when ignition operation is detected, and outputs periodic potential to the blower and the thermocouple, the thermocouple outputs first thermoelectric potential lower than a preset closed threshold when flame is not detected, the blower periodically takes electricity from the power supply when the pulser outputs the ignition pulse signal and the thermocouple outputs the first thermoelectric potential, the blower blows air to the burner main body, the problem that ignition deflagration is caused by gas accumulation in a closed cavity of the burner when flame ignition failure is not detected is solved, redundant gas can be periodically blown away by the blower when ignition failure occurs in the ignition process, the ignition deflagration is avoided, and the safety performance of the gas stove is improved.

The embodiment of the invention also provides a gas stove, which comprises any gas stove ignition anti-explosion system in the embodiment and has the functions and technical effects of the gas stove ignition anti-explosion system.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The gas stove ignition anti-explosion system is characterized by comprising a burner main body (1), an ignition needle (4), a pulser (5) and a power supply (8), wherein the power supply (8) is electrically connected with the pulser (5), the ignition needle (4) is arranged on the burner main body (1), and the pulser (5) is electrically connected with the ignition needle (4), and the gas stove ignition anti-explosion system is characterized by comprising a blower (2) for blowing the burner main body (1) and a thermocouple (3) arranged on the burner main body (1);

the blower (2) is electrically connected with the power supply (8);

the pulser (5) is respectively and electrically connected with the thermocouple (3) and the blower (2);

-said pulser (5) outputting an ignition pulse signal to said ignition needle (4) upon detection of an ignition operation, and outputting a periodic potential to said blower (2) and said thermocouple (3);

the thermocouple (3) outputs a first thermoelectric voltage lower than a preset closed threshold value when no flame is detected;

the blower (2) periodically draws power from the power supply (8) when the pulser (5) outputs an ignition pulse signal and the thermocouple (3) outputs the first thermoelectric voltage, and the blower (2) blows air to the burner main body (1).

2. The gas range ignition anti-explosion system according to claim 1, wherein the blower (2) is provided with an action induction switch electrically connected with the pulser (5) and the thermocouple (3), respectively, the action induction switch being closed when the pulser (5) outputs an ignition pulse signal and the thermocouple (3) outputs the first thermoelectric voltage, the power supply (8) supplying power to the blower (2).

3. The gas range ignition explosion-proof system according to claim 1, wherein the blower (2) is turned off when the pulser (5) outputs the ignition pulse signal and the thermocouple (3) outputs a second thermoelectric voltage, wherein the second thermoelectric voltage is a thermoelectric voltage output when the thermocouple (3) detects a flame.

4. The gas range ignition anti-explosion system according to claim 1, wherein when the pulser (5) is switched from outputting the ignition pulse signal to stopping outputting the ignition pulse signal and the thermocouple (3) outputs the first thermoelectric voltage, the blower (2) is turned on and is turned off after a preset first time period.

5. The gas range ignition anti-explosion system according to claim 1, wherein after the pulser (5) stops outputting the ignition pulse signal, when the thermoelectric voltage output by the thermocouple (3) changes from a second thermoelectric voltage to the first thermoelectric voltage, the blower (2) is turned on and turned off after a preset second period of time, wherein the second thermoelectric voltage is the thermoelectric voltage output when the thermocouple (3) detects a flame.

6. The gas range ignition anti-explosion system according to any one of claims 1 to 5, further comprising a plug valve (6) and a solenoid valve (7), the plug valve (6) and the solenoid valve (7) being provided on an intake duct of the burner body (1), the plug valve (6) being electrically connected to the pulser (5);

the plug valve (6) is used for controlling the pulser (5) to output the ignition pulse signal and the periodic potential when being triggered by pressing, controlling the electromagnetic valve (7) to be opened, and enabling the air inlet pipeline to conduct and output fuel gas to the burner main body (1).

7. A gas range ignition anti-explosion system according to claim 6, characterized in that the thermocouple (3) is electrically connected to the solenoid valve (7), the solenoid valve (7) being adapted to be opened when the thermocouple (3) outputs a second thermoelectric potential higher than the closed threshold or when the pulser (5) outputs an ignition pulse signal.

8. The gas range ignition anti-explosion system according to claim 6, wherein the thermocouple (3) is electrically connected with the electromagnetic valve (7), and the electromagnetic valve (7) is used for being closed when the thermoelectric voltage output by the thermocouple (3) changes from a second thermoelectric voltage to the first thermoelectric voltage, wherein the second thermoelectric voltage is the thermoelectric voltage output when the thermocouple (3) detects flame.

9. A gas range ignition anti-explosion system according to any one of claims 1-4, characterized in that the burner body (1) is provided with an air outlet (11), the blower (2) is provided with a blower connection pipe (21), the blower connection pipe (21) being in communication with the air outlet (11).

10. A gas cooker, characterized in that it comprises a gas cooker ignition deflagration prevention system as claimed in any one of claims 1 to 9.

Images