CN103900124A - Gas leakage protection device, gas stove and gas leakage protection method - Google Patents
Gas leakage protection device, gas stove and gas leakage protection method Download PDFInfo
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- CN103900124A CN103900124A CN201410136825.6A CN201410136825A CN103900124A CN 103900124 A CN103900124 A CN 103900124A CN 201410136825 A CN201410136825 A CN 201410136825A CN 103900124 A CN103900124 A CN 103900124A
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Abstract
The invention provides a gas leakage protection device, a gas stove and a gas leakage protection method, wherein the gas leakage protection device is used for the gas stove and comprises a gas leakage detection device and a switch assembly, wherein the gas leakage detection device is used for judging whether gas leakage of the gas stove is greater than a first preset threshold value, and generating a corresponding gas leakage signal when judging that the gas leakage of the gas stove is greater than the first preset threshold value; the switch assembly is connected to the gas leakage detection device and used for closing a pulse igniter of the gas stove when receiving the gas leakage signal, so that the pulse igniter can not discharge and ignite, and gas supply of the gas stove is cut off. By virtue of the technical scheme provided by the invention, when the gas leakage happens at the gas stove, the pulse igniter can be closed in time, and the gas supply can be cut off, so that the safety of the gas stove in use is improved.
Description
Technical field
The present invention relates to gas-cooker technical field, in particular to a kind of gas leakage protector, a kind of gas-cooker and a kind of gas-cooker leakage protecting method.
Background technology
Current household gas range is owing to there is no safety device, if the therefore in use valve body of gas-cooker or tracheae generation gas leakage will cause safety problem.Existing gas-cooker mainly contains following 3 deficiencies: one, in the time of gas-cooker generation gas leakage, do not detect the device of gas leakage, and although combustion gas process adds smelly processing, user does not know airborne gas content, still may cause combustion gas poisoning; Its two, in the time of gas-cooker generation gas leakage, the pulse igniter of gas-cooker still can be lighted a fire, and easily sets off an explosion and fire; Its three, gas-cooker in the time opening fire state, if occur gas leakage, gas-cooker can not close fire automatically, easily sets off an explosion and fire.
Therefore, how to improve the security of gas-cooker in the time there is gas leakage and become technical problem urgently to be resolved hurrily at present.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art or correlation technique.
For this reason, one object of the present invention has been to propose a kind of gas leakage protector that can improve gas-cooker security in the time there is gas leakage.
Another object of the present invention is to have proposed a kind of gas-cooker.
Another object of the present invention is to have proposed a kind of gas leakage guard method.
For achieving the above object, embodiment according to a first aspect of the invention, a kind of gas leakage protector has been proposed, for gas-cooker, comprise: gas leakage detecting device, whether the gas leakage amount that judges described gas-cooker is greater than the first predetermined threshold, in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generates corresponding gas leakage signal; Switch module, is connected to described gas leakage detecting device, in the time receiving described gas leakage signal, closes the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cuts off the gas supply of described gas-cooker.
Gas leakage protector according to an embodiment of the invention, by in the time judging that gas leakage amount is greater than the first predetermined threshold, close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
Certainly, those skilled in the art should be understood that, the aerial content of imflammable gas runs into naked light while reaching critical value and will blast, therefore, the setting of the first predetermined threshold need to be less than the critical value of the content that combustion gas may blast in air, it should be noted that, the setting of the first predetermined threshold can not be too little, gas-cooker normal ignition with normal close fiery process in burner place also likely reveal a small amount of combustion gas, sets the too little phenomenon that gas leakage easily occurs to report by mistake.
In addition, gas leakage protector according to the above embodiment of the present invention, can also have following additional technical characterictic:
According to one embodiment of present invention, described gas leakage detecting device, comprising: combustion gas detection probe, detects described gas-cooker and whether has gas leakage, and in the time that described gas-cooker exists gas leakage, generate corresponding detection signal and be sent to comparator according to gas leakage amount; Described comparator, is connected between described combustion gas detection probe and controller, described detection signal and the second predetermined threshold is compared, and comparative result is sent to described controller; Described controller, be connected to described comparator, judge according to the comparative result of described comparator whether the gas leakage amount of described gas-cooker is greater than described the first predetermined threshold, and in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate described gas leakage signal.
Gas leakage protector according to an embodiment of the invention, by in the time gas leakage being detected, the gas leakage amount that combustion gas detection probe is detected is converted to corresponding detection signal (for example: voltage signal/current signal), and corresponding detection signal and second predetermined threshold of the conversion of gas leakage amount are compared, to judge whether gas leakage amount is greater than the first predetermined threshold, in the time that gas leakage amount is greater than the first predetermined threshold, generating gas leakage signal, close the gas supply of pulse igniter and cut-out gas-cooker, improve the security of gas-cooker in the time there is gas leakage.
Wherein, owing to judging whether gas leakage amount is greater than the first predetermined threshold according to the detection signal of gas leakage amount conversion and the comparative result of the second predetermined threshold, for example: in the time that the detection signal of gas leakage amount conversion is greater than the second predetermined threshold, judge that gas leakage amount is greater than the first predetermined threshold.Therefore, the setting of the second predetermined threshold is relevant to the first predetermined threshold, and as preferred embodiment comparatively, the second predetermined threshold can be set as the size of the detection signal that is less than or equal to the first predetermined threshold conversion.
According to one embodiment of present invention, described controller comprises MCU chip.
Gas leakage protector according to an embodiment of the invention; controller comprises MCU(Micro Control Unit; micro-control unit) control chip; can pre-stored the second predetermined threshold in MCU control chip; MCU control chip is according to the comparative result of the comparator receiving; to determine that whether gas leakage amount is greater than the first predetermined threshold, determines whether generating gas leakage signal.Specifically, MCU chip can be the single-chip microcomputer of S3C9454 model.
According to one embodiment of present invention, described MCU chip is arranged on the master control borad of described gas-cooker.
Gas leakage protector according to an embodiment of the invention; for the gas-cooker that adopts automatically controlled mode; himself has disposed the master control borad that comprises MCU chip; thereby can directly use the MCU chip on this master control borad; realize based on gas leakage protection of the present invention, to make rational use of resources.Certainly, in order to reduce the processing capability requirements to the MCU chip on master control borad, or in the time that gas-cooker is non-automatically controlled form, obviously also can pass through other MCU chip, to realize in the time that gas leakage amount is greater than the first predetermined threshold, generating gas leakage signal.
According to one embodiment of present invention, also comprise: indicator lamp, light signal gives the alarm in the time receiving described gas leakage signal; And/or loudspeaker, in the time receiving described gas leakage signal, carry out voice message.
Gas leakage protector according to an embodiment of the invention, in the time that gas leakage amount is greater than the first predetermined threshold, notify user's gas kitchen range generation gas leakage by indicator lamp and/or loudspeaker with the form of sound and light alarm, as preferred embodiment comparatively, can also show airborne gas content by the display (if there is) on gas-cooker master control panel, with the airborne gas concentration of prompting user, avoid sucking excessive combustion gas generation combustion gas poisoning, with in prior art, there is no combustion gas checkout gear, cannot learn in air that gas content easily causes that combustion gas is poisoning and compares, further improve the security while there is gas leakage, wherein, indicator lamp can be light emitting diode, loudspeaker can be loudspeaker, certainly, herein and be not used in concrete restriction.
Embodiment according to a second aspect of the invention, has proposed a kind of gas-cooker, comprising: at least one burner; Self-priming valve, controls and provides combustion gas to described gas-cooker; At least one puts out guarantor's valve, control in described gas-cooker with described at least one put out and protect each putting out in valve and protect the corresponding described furnace end of gas cooker of valve combustion gas is provided; And the gas leakage protector described in any one in above-described embodiment.
Gas-cooker according to an embodiment of the invention, by add gas leakage protector in gas-cooker, make in the time judging that gas leakage amount is greater than the first predetermined threshold, close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
According to one embodiment of present invention, also comprise: switch module in the time receiving gas leakage signal, by close described self-priming valve and described in put out and protect valve and cut off the gas supply of described gas-cooker.
Gas-cooker according to an embodiment of the invention, due to self-priming valve with put out and protect valve control and provide combustion gas to each burner of gas-cooker, therefore can be by closing self-priming valve and put out guarantor's valve the gas supply that cuts off gas-cooker, if gas-cooker is in normal operating conditions, automatically close fire owing to cutting off gas supply, if gas-cooker is in the state of quitting work, owing to cutting off gas supply, gas-cooker cannot be lighted a fire, improve security, can prevent on the other hand the lasting leakage of combustion gas, avoid energy waste.
Embodiment according to a third aspect of the invention we, has proposed a kind of gas leakage guard method, for gas-cooker, comprising: the detection signal that obtains the combustion gas detection probe being installed in described gas-cooker; According to described detection signal, judge whether the gas leakage amount of described gas-cooker is greater than the first predetermined threshold; In the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate corresponding gas leakage signal; In the time receiving described gas leakage signal, close the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cut off the gas supply of described gas-cooker.
Gas leakage guard method according to an embodiment of the invention, by in the time judging that gas leakage amount is greater than the first predetermined threshold, close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
Certainly, those skilled in the art should be understood that, the aerial content of imflammable gas runs into naked light while reaching critical value and will blast, therefore, the setting of the first predetermined threshold need to be less than the critical value of the content that combustion gas may blast in air, it should be noted that, the setting of the first predetermined threshold can not be too little, gas-cooker normal ignition with normal close fiery process in burner place also likely reveal a small amount of combustion gas, sets the too little phenomenon that gas leakage easily occurs to report by mistake.
According to one embodiment of present invention, also comprise: in the time receiving described gas leakage signal, point out described gas-cooker generation gas leakage.
Gas leakage guard method according to an embodiment of the invention, in the time that gas leakage amount is greater than the first predetermined threshold, notify user's gas kitchen range generation gas leakage by indicator lamp and/or loudspeaker with the form of sound and light alarm, as preferred embodiment comparatively, can also show airborne gas content by the display (if there is) on gas-cooker master control panel, with the airborne gas concentration of prompting user, avoid sucking excessive combustion gas generation combustion gas poisoning, with in prior art, there is no combustion gas checkout gear, cannot learn in air that gas content easily causes that combustion gas is poisoning and compares, further improve the security while there is gas leakage, wherein, indicator lamp can be light emitting diode, loudspeaker can be loudspeaker, certainly, herein and be not used in concrete restriction.
According to one embodiment of present invention, the concrete steps of the gas supply of the described gas-cooker of described cut-out are: in the time receiving described gas leakage signal, close and be arranged on putting out on described gas-cooker tracheae and protect valve and self-priming valve, to cut off the gas supply of described gas-cooker.
Gas leakage guard method according to an embodiment of the invention; due to self-priming valve with put out and protect valve control and provide combustion gas to each burner of gas-cooker; therefore can be by closing self-priming valve and put out guarantor's valve the gas supply that cuts off gas-cooker; if gas-cooker is in normal operating conditions; automatically close fire owing to cutting off gas supply; if gas-cooker is in the state of quitting work; owing to cutting off gas supply, gas-cooker cannot be lighted a fire; improve security; can prevent on the other hand the lasting leakage of combustion gas, avoid energy waste.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 shows the structural representation of gas leakage protector according to an embodiment of the invention;
Fig. 2 A to 2B shows the structural representation of gas-cooker according to an embodiment of the invention;
Fig. 3 A to 3F shows the electrical block diagram of gas-cooker according to an embodiment of the invention;
Fig. 4 shows the schematic flow diagram of gas leakage guard method according to an embodiment of the invention;
Fig. 5 shows the schematic flow diagram of the course of work of gas-cooker according to an embodiment of the invention.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Fig. 1 shows the structural representation of gas leakage protector according to an embodiment of the invention.
As shown in Figure 1, gas leakage protector according to an embodiment of the invention, for gas-cooker, comprise: gas leakage detecting device 102, whether the gas leakage amount that judges described gas-cooker is greater than the first predetermined threshold, in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate corresponding gas leakage signal; Switch module 104, is connected to described gas leakage detecting device 102, in the time receiving described gas leakage signal, closes the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cuts off the gas supply of described gas-cooker.
By in the time judging that gas leakage amount is greater than the first predetermined threshold, close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
Certainly, those skilled in the art should be understood that, the aerial content of imflammable gas runs into naked light while reaching critical value and will blast, therefore, the setting of the first predetermined threshold need to be less than the critical value of the content that combustion gas may blast in air, it should be noted that, the setting of the first predetermined threshold can not be too little, gas-cooker normal ignition with normal close fiery process in burner place also likely reveal a small amount of combustion gas, sets the too little phenomenon that gas leakage easily occurs to report by mistake.
According to one embodiment of present invention, described gas leakage detecting device 102, comprise: combustion gas detection probe 1022, detect described gas-cooker and whether have gas leakage, and in the time that described gas-cooker exists gas leakage, generate corresponding detection signal and be sent to comparator 1024 according to gas leakage amount; Described comparator 1024, is connected between described combustion gas detection probe 1022 and controller 1026, described detection signal and the second predetermined threshold is compared, and comparative result is sent to described controller 1026; Described controller 1026, be connected to described comparator 1024, judge according to the comparative result of described comparator 1024 whether the gas leakage amount of described gas-cooker is greater than described the first predetermined threshold, and in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate described gas leakage signal.
By in the time gas leakage being detected, the gas leakage amount that combustion gas detection probe is detected is converted to corresponding detection signal (for example: voltage signal/current signal), and corresponding detection signal and second predetermined threshold of the conversion of gas leakage amount are compared, to judge whether gas leakage amount is greater than the first predetermined threshold, in the time that gas leakage amount is greater than the first predetermined threshold, generating gas leakage signal, the gas supply of closing pulse igniter and cut-out gas-cooker, improves the security of gas-cooker in the time there is gas leakage.
Wherein, owing to judging whether gas leakage amount is greater than the first predetermined threshold according to the detection signal of gas leakage amount conversion and the comparative result of the second predetermined threshold, for example: in the time that the detection signal of gas leakage amount conversion is greater than the second predetermined threshold, judge that gas leakage amount is greater than the first predetermined threshold.Therefore, the setting of the second predetermined threshold is relevant to the first predetermined threshold, and as preferred embodiment comparatively, the second predetermined threshold can be set as the size of the detection signal that is less than or equal to the first predetermined threshold conversion.
According to one embodiment of present invention, described controller 1026 comprises MCU chip.
Controller 1026 comprises MCU(Micro Control Unit, micro-control unit) control chip, can pre-stored the second predetermined threshold in MCU control chip, MCU control chip is according to the comparative result of the comparator 1024 receiving, to determine that whether gas leakage amount is greater than the first predetermined threshold, determines whether generating gas leakage signal.Specifically, MCU chip can be the single-chip microcomputer of S3C9454 model.
According to one embodiment of present invention, described MCU chip is arranged on the master control borad of described gas-cooker.
For the gas-cooker that adopts automatically controlled mode, himself has disposed the master control borad that comprises MCU chip, thereby can directly use the MCU chip on this master control borad, realizes based on gas leakage protection of the present invention, to make rational use of resources.Certainly, in order to reduce the processing capability requirements to the MCU chip on master control borad, or in the time that gas-cooker is non-automatically controlled form, obviously also can pass through other MCU chip, to realize in the time that gas leakage amount is greater than the first predetermined threshold, generating gas leakage signal.
According to one embodiment of present invention, also comprise: indicator lamp 106, light signal gives the alarm in the time receiving described gas leakage signal; And/or loudspeaker 108, in the time receiving described gas leakage signal, carry out voice message.
Gas leakage protector according to an embodiment of the invention, in the time that gas leakage amount is greater than the first predetermined threshold, notify user's gas kitchen range generation gas leakage by indicator lamp 106 and/or loudspeaker 108 with the form of sound and light alarm, as preferred embodiment comparatively, can also show airborne gas content by the display (if there is) on gas-cooker master control panel, with the airborne gas concentration of prompting user, avoid sucking excessive combustion gas generation combustion gas poisoning, with in prior art, there is no combustion gas checkout gear, cannot learn in air that gas content easily causes that combustion gas is poisoning and compares, further improve the security while there is gas leakage, wherein, indicator lamp 106 can be light emitting diode, loudspeaker 108 can be loudspeaker, certainly, herein and be not used in concrete restriction.
Fig. 2 A to 2B shows the structural representation of gas-cooker according to an embodiment of the invention.
As shown in Figure 2 A, gas-cooker according to an embodiment of the invention, comprising: at least one burner (not shown); Self-priming valve (self-priming valve 214 in Fig. 2 A and Fig. 2 B), controls and provides combustion gas to described gas-cooker; At least one put out protect valve (in Fig. 2 A one puts out and protects valve 212, in Fig. 2 B, illustrated two put out protect valve 212A and 212B), control in described gas-cooker with described at least one put out and protect each putting out in valve and protect the corresponding described furnace end of gas cooker of valve combustion gas is provided; And the gas leakage protector described in any one in above-described embodiment.
By add gas leakage protector in gas-cooker, make, in the time judging that gas leakage amount is greater than the first predetermined threshold, to close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
According to one embodiment of present invention, also comprise: switch module in the time receiving gas leakage signal, by close described self-priming valve 214 and described in put out the gas supply of protecting valve and cut off described gas-cooker.
Due to self-priming valve with put out and protect valve control and provide combustion gas to each burner of gas-cooker, therefore can be by closing self-priming valve and put out guarantor's valve the gas supply that cuts off gas-cooker, if gas-cooker is in normal operating conditions, automatically close fire owing to cutting off gas supply, if gas-cooker, in the state of quitting work, cannot light a fire gas-cooker owing to cutting off gas supply, improve security, can prevent on the other hand the lasting leakage of combustion gas, avoid energy waste.
Describe in detail according to the course of work of embodiments of the invention gas-cooker below in conjunction with Fig. 2 A and Fig. 2 B.
As shown in Figure 2 A, when gas-cooker is normally worked, in tracheae 202(Fig. 2 B 202) supply combustion gas to the burner of gas-cooker, in the use procedure of gas-cooker, if there is gas leakage in tracheae 202 or valve body 204, 206 in gas leakage detecting device 206(Fig. 2 B) in combustion gas detection probe gas leakage will be detected, and in the time judging that gas leakage amount is greater than the first predetermined threshold, send gas leakage signal to switch module by connecting line 206, switch module is arranged at 210 in pulse control box 210(Fig. 2 B) in, pulse control box 210 control impuls igniters cannot be lighted a fire, control to close simultaneously and put out the 212A and the 212B that protect in valve 212(Fig. 2 B) and self-priming valve 214(Fig. 2 B in 214) set off an explosion and fire avoiding, can also reveal by prompting device and/or loudspeaker (not shown) prompting user's gas.
For concrete gas-cooker internal circuit, its implementation procedure is as follows:
Fig. 3 A to 3F shows the electrical block diagram of gas-cooker according to an embodiment of the invention.
As shown in Figure 3A, Fig. 3 A shows the electrical block diagram of combustion gas checkout gear according to an embodiment of the invention, wherein, controller (MCU chip) receives the detection signal of combustion gas detection probe, in the time judging that gas leakage amount is greater than the first predetermined threshold, output gas leakage signal is held to DATE, so that gas leakage signal is sent to pulse control box, control is closed pulse igniter and is cut off the gas supply of gas-cooker, and send cue to LED end and send light warning signal with the indicator lamp of indicator lamp warning circuit shown in control chart 3B, send cue to SP-V end with the cue of sounding of the audible alarm circuit shown in control chart 3C.
As shown in Figure 3 D, the DATE data terminal of pulse control box receives from the gas leakage signal of gas leakage detecting device middle controller output (DATE end in Fig. 3 A), close self-priming valve and put out guarantor's valve by the pass ignition circuit shown in XH-CR, OS-R, OS-L, XH-CL end control chart 3E, close pulse igniter so that gas-cooker cannot discharge igniting by the pulse ignition circuit shown in DH LO, DH RO control chart 3F, improve the security of gas-cooker.
Fig. 4 shows the schematic flow diagram of gas leakage guard method according to an embodiment of the invention.
As shown in Figure 4, gas leakage guard method according to an embodiment of the invention, for gas-cooker, comprising: step 402 is obtained the detection signal of the combustion gas detection probe being installed in described gas-cooker; Step 404, according to described detection signal, judges whether the gas leakage amount of described gas-cooker is greater than the first predetermined threshold; Step 406, in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generates corresponding gas leakage signal; Step 408, in the time receiving described gas leakage signal, closes the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cuts off the gas supply of described gas-cooker.
By in the time judging that gas leakage amount is greater than the first predetermined threshold, close the pulse igniter of gas-cooker, make the pulse igniter cannot discharge igniting, make to use gas-cooker, effectively raise security; Simultaneously in the time judging that gas leakage amount is greater than the first predetermined threshold, cut off the gas supply of gas-cooker, if gas-cooker is in normal operating conditions, owing to cutting off the gas supply of gas-cooker, therefore can realize and in the time there is gas leakage, automatically close fire, avoid in prior art, in the time of gas-cooker generation gas leakage, when pulse igniter still can be lighted a fire or gas-cooker is normally worked, can not automatically closing blast and the fire that fire causes, the security while having improved gas-cooker generation gas leakage.
Certainly, those skilled in the art should be understood that, the aerial content of imflammable gas runs into naked light while reaching critical value and will blast, therefore, the setting of the first predetermined threshold need to be less than the critical value of the content that combustion gas may blast in air, it should be noted that, the setting of the first predetermined threshold can not be too little, gas-cooker normal ignition with normal close fiery process in burner place also likely reveal a small amount of combustion gas, sets the too little phenomenon that gas leakage easily occurs to report by mistake.
According to one embodiment of present invention, also comprise: in the time receiving described gas leakage signal, point out described gas-cooker generation gas leakage.
In the time that gas leakage amount is greater than the first predetermined threshold, notify user's gas kitchen range generation gas leakage by indicator lamp and/or loudspeaker with the form of sound and light alarm, as preferred embodiment comparatively, can also show airborne gas content by the display (if there is) on gas-cooker master control panel, with the airborne gas concentration of prompting user, avoid sucking excessive combustion gas generation combustion gas poisoning, with in prior art, there is no combustion gas checkout gear, cannot learn in air that gas content easily causes that combustion gas is poisoning and compares, further improve the security while there is gas leakage, wherein, indicator lamp can be light emitting diode, loudspeaker can be loudspeaker, certainly, herein and be not used in concrete restriction.
According to one embodiment of present invention, the concrete steps of the gas supply of the described gas-cooker of described cut-out are: in the time receiving described gas leakage signal, close and be arranged on putting out on described gas-cooker tracheae and protect valve and self-priming valve, to cut off the gas supply of described gas-cooker.
Due to self-priming valve with put out and protect valve control and provide combustion gas to each burner of gas-cooker, therefore can be by closing self-priming valve and put out guarantor's valve the gas supply that cuts off gas-cooker, if gas-cooker is in normal operating conditions, automatically close fire owing to cutting off gas supply, if gas-cooker, in the state of quitting work, cannot light a fire gas-cooker owing to cutting off gas supply, improve security, can prevent on the other hand the lasting leakage of combustion gas, avoid energy waste.
Fig. 5 shows the schematic flow diagram of the course of work of gas-cooker according to an embodiment of the invention.
As shown in Figure 5, the course of work of gas-cooker according to an embodiment of the invention, specifically comprises:
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, in the time there is gas leakage, can close in time pulse igniter, and cut-out gas supply carries out sound and light alarm prompting simultaneously, has improved the security in gas-cooker use procedure.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a gas leakage protector, for gas-cooker, is characterized in that, comprising:
Gas leakage detecting device, judges whether the gas leakage amount of described gas-cooker is greater than the first predetermined threshold, in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generates corresponding gas leakage signal;
Switch module, is connected to described gas leakage detecting device, in the time receiving described gas leakage signal, closes the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cuts off the gas supply of described gas-cooker.
2. gas leakage protector according to claim 1, is characterized in that, described gas leakage detecting device, comprising:
Combustion gas detection probe, detects described gas-cooker and whether has gas leakage, and in the time that described gas-cooker exists gas leakage, generates corresponding detection signal and be sent to comparator according to gas leakage amount;
Described comparator, is connected between described combustion gas detection probe and controller, described detection signal and the second predetermined threshold is compared, and comparative result is sent to described controller;
Described controller, be connected to described comparator, judge according to the comparative result of described comparator whether the gas leakage amount of described gas-cooker is greater than described the first predetermined threshold, and in the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate described gas leakage signal.
3. gas leakage protector according to claim 2, is characterized in that, described controller comprises MCU chip.
4. gas leakage protector according to claim 3, is characterized in that, described MCU chip is arranged on the master control borad of described gas-cooker.
5. gas leakage protector according to claim 1, is characterized in that, also comprises:
Indicator lamp, light signal gives the alarm in the time receiving described gas leakage signal; And/or
Loudspeaker carries out voice message in the time receiving described gas leakage signal.
6. a gas-cooker, is characterized in that, comprising:
At least one burner;
Self-priming valve, controls and provides combustion gas to described gas-cooker;
At least one puts out guarantor's valve, control in described gas-cooker with described at least one put out and protect each putting out in valve and protect the corresponding described furnace end of gas cooker of valve combustion gas is provided; And
Gas leakage protector as described in any one in claim 1 to 5.
7. gas-cooker according to claim 6, is characterized in that, also comprises:
Switch module in the time receiving gas leakage signal, by close described self-priming valve and described in put out and protect valve and cut off the gas supply of described gas-cooker.
8. a gas leakage guard method, for gas-cooker, is characterized in that, comprising:
Obtain the detection signal of the combustion gas detection probe being installed in described gas-cooker;
According to described detection signal, judge whether the gas leakage amount of described gas-cooker is greater than the first predetermined threshold;
In the time that the gas leakage amount of judging described gas-cooker is greater than described the first predetermined threshold, generate corresponding gas leakage signal;
In the time receiving described gas leakage signal, close the pulse igniter of described gas-cooker, so that described pulse igniter cannot discharge igniting, and cut off the gas supply of described gas-cooker.
9. gas leakage guard method according to claim 8, is characterized in that, also comprises: in the time receiving described gas leakage signal, point out described gas-cooker generation gas leakage.
10. gas leakage guard method according to claim 8, is characterized in that, the concrete steps of the gas supply of the described gas-cooker of described cut-out are:
In the time receiving described gas leakage signal, close and be arranged on putting out on described gas-cooker tracheae and protect valve and self-priming valve, to cut off the gas supply of described gas-cooker.
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| CN201410136825.6A CN103900124B (en) | 2014-04-04 | 2014-04-04 | Gas leakage protector, gas-cooker and gas leakage guard method |
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| CN105629760A (en) * | 2016-03-21 | 2016-06-01 | 美的集团股份有限公司 | Smart home system, smart home safety control device and safety control method |
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| CN110118366A (en) * | 2018-02-07 | 2019-08-13 | 青岛海尔智慧厨房电器有限公司 | A kind of intelligent gas-burning stove and fuel gas leakage detection method |
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