CN211781255U

CN211781255U - Electromagnetic valve and automatic flameout system

Info

Publication number: CN211781255U
Application number: CN201921891330.9U
Authority: CN
Inventors: 孙庆新
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-10-27
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to a gas-cooker technical field, concretely relates to solenoid valve and automatic flameout system, this flameout system include central processing unit and power, and this flameout system is still including image acquisition device, thermocouple and the solenoid valve that is used for gathering the image information of gas-cooker, be equipped with in the solenoid valve along with the solenoid valve break-make and the magnetic reed switch of break-make, central processing unit cross over connect in the solenoid valve with between the thermocouple, the other end of solenoid valve with the other end of thermocouple links to each other, the power passes through the magnetic reed switch respectively with central processing unit with image acquisition device links to each other. The embodiment of the utility model provides a through the linkage cooperation of image acquisition device, central processing unit, thermocouple, solenoid valve, reed switch and power, reach automatic flame-out's purpose.

Description

Electromagnetic valve and automatic flameout system

Technical Field

The utility model relates to a gas-cooker technical field, concretely relates to solenoid valve and automatic flameout system.

Background

In order to ensure the safety, flameout protection devices are installed in the gas stoves, thermocouples are connected with the electromagnetic valves, and the thermocouples can generate current at a certain temperature so as to conduct the electromagnetic valves to open a gas passage; when the temperature of the thermocouple is reduced, no current flows in the thermocouple, the magnetic force of the electromagnetic valve disappears to close the fuel gas passage, and the purpose of safety protection of automatic gas cut-off is further achieved.

In practice, the inventors found that the above prior art has the following disadvantages:

after the water boiler is boiled, a large amount of water vapor can appear, and due to other reasons, a user often forgets to turn off the fire, and only when the boiler bottom is dried and the temperature rises suddenly, the fire is automatically turned off, and the fire cannot be turned off timely.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a solenoid valve and automatic flameout system, this utility model's concrete scheme as follows:

in a first aspect, an embodiment of the present invention provides an automatic flameout system applied to a gas stove, the flameout system includes a central processing unit and a power supply, the flameout system further includes an image acquisition device, a thermocouple and a solenoid valve for acquiring image information of the gas stove, the solenoid valve is provided with a magnetic reed switch connected and disconnected with the solenoid valve, the central processing unit is bridged between the solenoid valve and the thermocouple, the other end of the solenoid valve is connected with the other end of the thermocouple, the power supply is connected with the magnetic reed switch respectively with the central processing unit and the image acquisition device.

Further, the electromagnetic valve comprises a sealing plug for plugging the gas through hole, and the sealing plug is connected with an iron sheet matched with the electromagnet through a rebound mechanism; the rebound mechanism is provided with a permanent magnetic part moving along with the rebound mechanism, a magnetic reed switch is arranged at the position close to the maximum displacement of the permanent magnetic part, and a lead of the magnetic reed switch extends out of the valve body.

Furthermore, the rebounding mechanism comprises a push rod, a spring and a stopping piece, one end of the push rod is connected with the sealing plug through the permanent magnetic piece, one end of the push rod, which is far away from the permanent magnetic piece, is connected with the iron sheet, the spring is sleeved on the push rod, and one end of the spring, which is close to the iron sheet, is in stopping fit through the stopping piece.

Further, the flameout system also comprises a cooker cover, the cooker cover comprises a cover body, a valve hole formed in the cover body, and an air valve body penetrating through the valve hole and used for being identified by the image acquisition device, and the air valve body is matched with the cover body in a blocking mode when moving upwards to a boiling water position under the action of steam airflow.

Further, the hollow valve body and the cover body are in blocking fit through a valve rod, one end of the valve rod extends into the hollow valve body, a blocking piece is arranged at one end of the valve rod extending into the hollow valve body, the blocking piece is in blocking fit with the hollow valve body, and one end, far away from the blocking piece, of the valve rod is connected with the cover body.

In a second aspect, another embodiment of the present invention provides a solenoid valve for a gas stove, the solenoid valve including a valve body, an electromagnet, an iron sheet used in cooperation with the electromagnet, a first ventilation cavity and a second ventilation cavity communicated with each other through a gas through hole, and a compression bar having one end close to the gas through hole and the other end penetrating through the first ventilation cavity and extending out of the valve body, wherein a sealing plug for plugging the gas through hole is disposed on one side of the gas through hole close to the second ventilation cavity, a permanent magnet is disposed on one side of the sealing plug away from the gas through hole, and the permanent magnet is connected to the iron sheet through a resilient mechanism; and a magnetic reed switch is arranged at the position close to the maximum displacement of the permanent magnetic piece, and a lead of the magnetic reed switch extends out of the valve body.

Furthermore, the rebounding mechanism comprises a push rod, a spring and a stopping piece, one end of the push rod is connected with the sealing plug through the permanent magnetic piece, one end of the push rod, which is far away from the permanent magnetic piece, is connected with the iron sheet, the spring is sleeved on the push rod, and one end, which is close to the iron sheet, of the spring is in stopping fit with the stopping piece.

The utility model discloses following beneficial effect has:

the embodiment of the utility model provides an automatic flameout system, this flameout system include central processing unit, power, be used for gathering the image information's of gas-cooker image acquisition device, thermocouple and solenoid valve, are equipped with in the solenoid valve along with the solenoid valve break-make and the magnetic reed switch of break-make, this thermocouple cross-over are between solenoid valve and central processing unit, and the other end and the central processing unit of solenoid valve link to each other, and the power passes through the magnetic reed switch and links to each other with central processing unit and image acquisition device respectively. The embodiment of the utility model provides a through the linkage cooperation of image acquisition device, central processing unit, thermocouple, solenoid valve, reed switch and power, reach automatic flame-out's purpose.

Drawings

In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic structural diagram of an automatic flameout system according to an embodiment of the present invention;

fig. 2 is a solenoid valve according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the solenoid valve in FIG. 2 in a conducting state;

FIG. 4 is a schematic structural view of a cover for a cooking device according to another embodiment of the present invention;

FIG. 5 is a schematic view of the cooker cover of FIG. 4 in a boiling state;

fig. 6 is a flowchart of an automatic flameout method according to another embodiment of the present invention.

In the figure: 100-gas stove, 200-electromagnetic valve, 300-thermocouple, 400-central processing unit, 500-magnetic reed switch, 600-power supply, 700-image acquisition device, 20-valve body, 21-first ventilation cavity, 22-second ventilation cavity, 23-gas inlet, 24-gas outlet, 25-gas through hole, 201-sealing plug, 202-permanent magnet, 203-rebound mechanism, 204-iron sheet, 205-electromagnet, 206-pressure rod, 2031-push rod, 2032-spring, 2033-spring stopper, 501-lead, 502-switch support frame, 261-fixing protrusion, 262-sealing ring, 263-sealing cover, 264-bolt hole, 2051-coil lead, 2052-electromagnet seat, 700-cover body, 701-air valve body, 702-valve rod, 703-stop piece, 704-fixing frame and 705-valve hole.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be given to the specific embodiments, structures, features and effects of the solenoid valve and the automatic flameout system according to the present invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein the term "and/or" includes any and all combinations of one or more of the associated listed items.

The following describes a specific embodiment of the solenoid valve and the automatic flameout system provided by the present invention in detail with reference to the accompanying drawings and specific embodiments.

Please refer to fig. 1, which shows a schematic structural diagram of an automatic flameout system according to an embodiment of the present invention, in order to solve the problem of turning off the fire within a certain time after the water is boiled, the present embodiment collects the image information of the gas stove through an image collecting device, and combines with a thermocouple solenoid valve provided with a magnetic reed switch to control the on/off of the thermocouple solenoid valve through a central processing unit, thereby controlling the on/off of the gas. The automatic fire extinguishing system includes a central processor 400, a power supply 600, an image capturing device 700, a thermocouple 300, and a solenoid valve 200.

Specifically, the electromagnetic valve 200 is used for controlling the on-off of the gas passage, the gas passage is arranged inside the electromagnetic valve 200, and the electromagnetic valve 200 attracts the iron sheet 204 after being conducted, so as to conduct the gas passage. A reed switch 500 that is turned on and off in accordance with the on and off of the solenoid valve 200 is provided in the solenoid valve 200. When the electromagnetic valve 200 is conducted, the gas passage is conducted, and the magnetic reed switch 500 is closed; when the solenoid valve 200 is turned off in the event of a power failure, the gas passage is not opened, and the reed switch 500 is turned off.

One end of the electromagnetic valve 200 is connected with one end of the thermocouple 300, the other end of the electromagnetic valve 200 and the other end of the thermocouple 300 are respectively connected with the central processing unit 400, the central processing unit 400 respectively gives a high level to the electromagnetic valve 200 and the thermocouple 300, and in a normal state, after the thermocouple 300 is heated to generate current, the thermocouple 300 is conducted with the electromagnetic valve 200, the gas passage is conducted, and the magnetic reed switch 500 is closed; when fire needs to be shut off, when the central processing unit 400 gives a low level to the electromagnetic valve 200, the electromagnetic valve 200 is disconnected in power loss, a gas passage is disconnected, and the reed switch 500 is disconnected.

The reed switch 500 is used as a power switch, and the power supply 600 is connected to the central processing unit 400 and the image capturing device 700 through the reed switch 500 to supply power.

The image acquisition device 700 is used for acquiring an image of the gas stove 100, extracting corresponding characteristic information according to the image, feeding the characteristic information back to the central processor 400, judging whether fire is shut off by the central processor 400, and controlling the on-off of the electromagnetic valve 200 by the central processor 400 when the fire is shut off. In this embodiment, the image capturing device 700 employs a camera with an analysis processing function, and the image capturing device 700 communicates with the central processing unit through a wired or wireless connection.

To sum up, the embodiment of the utility model provides an automatic flameout system, this flameout system include central processing unit 400, power 600, be used for gathering the image information's of gas-cooker 100 image acquisition device 700, thermocouple 300 and solenoid valve 200, be equipped with in the solenoid valve 200 along with the solenoid valve 200 break-make and the magnetic reed switch 500 of break-make, this thermocouple 300 cross over between solenoid valve 200 and central processing unit 400, and the other end of solenoid valve 200 links to each other with central processing unit 400, and power 600 passes through magnetic reed switch 500 and links to each other with central processing unit 400 and image acquisition device 700 respectively. The image acquisition device acquires corresponding images and extracts corresponding characteristic information, the characteristic information is fed back to the central processing unit 400, when the central processing unit 400 judges that fire needs to be shut down, the central processing unit 400 controls the electromagnetic valve 200 to be powered off and disconnected, a gas passage is disconnected, the gas stove 100 is automatically shut down, the magnetic reed switch 500 is disconnected, the central processing unit 400 and the image acquisition device 700 are powered off and stop working, and the purpose of automatic flameout is achieved.

Preferably, referring to fig. 2 and 3, the solenoid valve 200 includes a valve body 20, an electromagnet 205, an iron sheet 204, a first vent cavity 21, a second vent cavity 22, a gas through hole 25, a pressure rod 206, a sealing plug 201, a permanent magnet 202, a rebound mechanism 203, and a reed switch 500. Specifically, the method comprises the following steps:

a first vent cavity 21 and a second vent cavity 22 are provided inside the valve body 20 of the solenoid valve 200, wherein the first vent cavity 21 and the second vent cavity 22 are used for providing a passage for fuel gas and accommodating spaces for other various components. An opening is formed in the side wall of the first vent cavity 21 to serve as a gas inlet 23, another opening is formed in the side wall of the second vent cavity 22 to serve as a gas outlet 24, and the first vent cavity 21 is communicated with the second vent cavity 22 through a gas through hole 25.

A sealing plug 201, a rebound mechanism 203, an electromagnet 205, an iron sheet 204 and a reed switch 500 are arranged in the second vent cavity 22, the sealing plug 201 is connected with the iron sheet 204 through the rebound mechanism 203, the iron sheet 204 is matched with the electromagnet 205, a permanent magnet 202 moving along with the rebound mechanism 203 is arranged on the rebound mechanism 203, the reed switch 500 is arranged at the position close to the maximum displacement of the permanent magnet 202, and a lead 501 of the reed switch 500 extends out of the valve body 20. When the sealing plug 201 presses the rebound mechanism 203 and drives the permanent magnet part 202 to move downwards to the maximum displacement position, the permanent magnet part 202 is close to the magnetic reed switch 500, the magnetic reed switch 500 is closed, the gas channel is opened, and when the electromagnet 205 is electrified to attract the iron sheet 204, the gas channel is continuously conducted; when the electromagnet 205 is de-energized to release the iron sheet 204, the iron sheet 204 drives the sealing plug 201 and the permanent magnet piece 202 to move upwards through the rebound mechanism 203 to seal the gas through hole 25, at the moment, the gas channel is blocked, the gas channel is disconnected, and meanwhile, the permanent magnet piece 202 is far away from the reed switch 500, and the reed switch 500 is disconnected.

Specifically, in this embodiment, the permanent magnet 202 may be a permanent magnet disc, or may be another permanent magnet 202 that magnetizes and closes the reed switch 500 when approaching the reed switch 500, and the shape of the permanent magnet disc may be a circle or a square, and the shape of the permanent magnet disc is not limited herein.

Preferably, the reed switch 500 is fixedly connected to the valve body 20 through a switch support frame 502, and the switch support frame 502 may be a support frame fixed to the valve body 20 or a protrusion integrally formed with the valve body 20.

The sealing plug 201 may be a sealing ring, or may be an element for sealing in other forms.

Preferably, referring to fig. 2 and fig. 3 again, the rebounding mechanism 203 includes a push rod 2031, a spring 2032 and a spring stopper 2033, wherein one end of the push rod 2031 is connected to the sealing plug 201 through the permanent magnet 202, one end of the push rod 2031 far away from the permanent magnet 202 is connected to the iron sheet 204, the spring 2032 is sleeved on the push rod 2031, and one end of the spring 2032 near the iron sheet 204 is in stop fit with the spring stopper 2033. The spring stopper 2033 may be a stopper fixed to the valve body 20 to stop the spring 2032, or may be a protrusion formed integrally with the valve body 20. Specifically, in this embodiment, the push rod 2031 and the spring 2032 are not magnetically conductive, and specifically, the push rod 2031 and the spring 2032 are made of a non-magnetically conductive stainless steel material.

Preferably, referring to fig. 2 and 3 again, a plunger 206 is disposed in the first venting chamber 21, and in a free state, one end of the plunger 206 is located above the gas through hole 25, and the other end thereof penetrates through the valve body 20. When the pressing rod 206 is pressed, one end of the pressing rod 206 close to the gas through hole 25 moves downwards along the gas through hole 25 and presses the sealing plug 201 and the permanent magnetic part 202 to move downwards to the maximum displacement position to be contacted with the electromagnet 205, at the moment, the gas through hole 25 is opened, a gas passage is conducted, after the thermocouple 300 is heated to generate current, the electromagnetic valve 200 is conducted to attract the iron sheet 204, and then the gas passage is kept in a conducting state.

Preferably, a cover 263 is disposed at one end of the valve body 20 close to the electromagnet 205, and after the components are installed in the valve body, the cover 263 is matched with the valve body to lock and seal the valve body. Specifically, a fixing protrusion 261 is disposed at one end of the valve body close to the cover 263, and when sealing is performed, a sealing ring 262 is additionally disposed between the cover 263 and the fixing protrusion 261 and is fixedly connected through a bolt hole 264.

Preferably, an opening is provided in the cover 263 on the side adjacent to the electromagnet 205, through which opening the electromagnet seat 2052 of the electromagnet 205 protrudes outside the valve body. The coil wire 2051 of the electromagnet 205 is led out through the electromagnet seat 2052.

Preferably, referring to fig. 4 and 5, the automatic fire extinguishing system further includes a cooker cover, the cooker cover is used for being identified by the image capturing device 700, the cooker cover includes a cover body 700, a valve hole 705 and a valve body 701, specifically, the valve hole 705 is opened on the cover body 700, the valve body 701 penetrates through the valve hole 705, the valve hole 705 and the valve body 701 are in clearance fit, and the valve body 701 is in blocking fit with the cover body 700 when moving upwards to a boiling water position under the action of steam flow. Under the action of steam airflow, the blank valve body 701 moves upwards to the boiling water position, when the image acquisition device 700 identifies the blank valve body 701, the water is indicated to be boiled at the moment, the central processing unit 400 judges the fire-off time according to preset conditions, and when the fire needs to be turned off, the central processing unit 400 controls the electromagnetic valve 200 to be disconnected, so that the fire is turned off.

The boiling water position is not a specific height, but a boiling water position after the air valve body 701 is blown up by the steam flow.

Preferably, at least one air hole is formed in the air valve body 701, and the air hole is used for releasing pressure in the cooker.

Preferably, referring to fig. 4 and 5 again, the hollow valve body 701 and the cover 700 are in stop fit through a valve stem 702, and one end of the valve stem 702 extends into the hollow valve body 701. A stop member 703 is disposed at an end of the valve rod 702 extending into the air valve body 701, and when the air valve body 701 moves upward to a boiling water position under the action of the steam flow, the air valve body 701 and the cover body 700 are in stop fit through the stop member 703. The valve stem 702 is connected to the cover 700 at an end thereof remote from the stopper 703. Specifically, in the embodiment, the hollow valve body 701 is a hollow shell, a through hole is formed at the bottom of the hollow valve body 701 for the valve rod 702 to pass through, and the stopper 703 may be a stopper rod with a length greater than that of the through hole, or may be another member greater than that of the through hole.

Preferably, referring to fig. 4 and 5 again, the valve stem 702 is connected to the cover 700 through a fixing frame 704, the fixing frame 704 may be a U-shaped bracket connected to the cover 700, and an end of the valve stem 702 away from the stopper 703 is connected to the U-shaped bracket; the mounting bracket 704 may also be of other shapes that can function as a bracket for fixedly supporting the valve stem 702.

Based on the same utility model concept as the above-mentioned automatic flameout system, please refer to fig. 6, which shows a flowchart of an automatic flameout method provided by another embodiment of the present invention, the automatic flameout method is firstly characterized in that a central processing unit is bridged between a thermocouple and an electromagnetic valve, a magnetic reed switch which is switched on and off along with the on-off of the electromagnetic valve is arranged in the electromagnetic valve, the magnetic reed switch is bridged between the central processing unit and a power supply, and the flameout method further comprises the following steps:

and S001, acquiring the image of the gas stove through an image acquisition device, and extracting the characteristic information of the image according to the machine learning model.

The machine learning model related to the embodiment of the utility model can adopt a coffee deep learning framework and a fast-RCNN network framework, but is not limited to use the deep learning method and the network framework; any one of Caffe at Berkeley school, Theano at Montreal's college of California, Brainsterm at Switzerland's Artificial Intelligence laboratory IDSIA, Marvin at Princeton university, etc. can be used as the frame for the deep learning; as a network architecture for this modeling, like SSD, fast-RCNN, etc. can be used. Because the embodiment of the utility model provides an adopted machine learning model is prior art, just the utility model discloses a point is not in the establishment of model, consequently no longer gives unnecessary details.

According to the image information collected by the image collecting device, training a machine learning model, firstly, collecting a plurality of groups of image information of water boiling in different scenes as training samples according to the training purpose, wherein the image information comprises image information before water boiling, such as image information without a cooker, image information of cookers at different stove positions, image information with different cookers, image information without water boiling, and image information after water boiling, such as image information of water vapor after water boiling, image information of the shape of the hollow valve body after the cooker cover is blown by the water vapor, and image information of the color of the hollow valve body.

The characteristic information of the image extracted by the machine learning model comprises: the cooking range information, the type information of the heated cooker and the boiling water condition information are sent to the central processing unit, wherein the boiling water condition information comprises information on whether the water vapor characteristics accord with the water vapor characteristics of boiling water, information on whether the position information of the hollow valve body on the cooker cover accords with the position characteristics of boiling water, color information marked on the hollow valve body and the like.

And step S002, judging the fire-off time by the central processing unit according to the characteristic information of the image.

And the central processor judges whether fire is required to be turned off and corresponding fire turning-off time according to the information of the range position, the type information of the cooker, the information of the valve body and/or the characteristic information of the water vapor. For example, if the water-boiling cooker is placed on the stove position with the preset value of No. 1 and the water-boiling condition is reached, the central processing unit shuts off the fire after delaying for a first preset time; if the cooking utensil is placed on the stove position with the preset value of No. 1 and the boiling water condition is achieved, the central processing unit is turned off after delaying the second preset time.

And step S003, after the fire-off time is reached, the central processing unit controls the electromagnetic valve to lose power, so as to close the gas channel, and meanwhile, the magnetic reed switch is disconnected, and the central processing unit stops working after losing power.

The central processing unit controls the electromagnetic valve to lose power, the electromagnetic valve releases the iron sheet at the moment, the iron sheet returns to the initial position under the action of the rebound mechanism, the sealing plug also returns to the initial position along with the rebound mechanism to block the gas through hole, namely, the gas channel is closed, the purpose of turning off fire is achieved, meanwhile, the permanent magnetic part arranged on the rebound mechanism is far away from the magnetic reed switch, the magnetic reed switch is disconnected, namely, a passage between the central processing unit and a power supply is cut off, and the central processing unit stops working after being powered off.

To sum up, the embodiment of the utility model provides a through the image information of the cooking utensil after image acquisition device gathers gas-cooker and improvement to adopt current machine learning model to draw the characteristic information of corresponding image, and then the break-make of the solenoid valve after improving through central processing unit control, and then control gas and central processing unit's break-make.

Preferably, referring to fig. 4 and 5 again, the boiling water condition information is information on whether the position information of the hollow valve body on the cooker cover matches the boiling water position, the cooker cover includes a cover body 700, a valve hole 705 formed on the cover body 700, and a hollow valve body 701 penetrating through the valve hole 705 and used for being recognized by the image capturing device, and the hollow valve body 701 is in stop fit with the cover body 700 when moving upwards to the boiling water position under the action of the steam flow. Under the action of the steam flow, the blank valve body 701 moves upwards to the boiling water position, and when the image acquisition device 700 identifies the position of the blank valve body 701, the water is boiled at the moment. The central processor 400 judges the fire-off time according to the preset conditions, and when the fire needs to be turned off, the central processor 400 controls the electromagnetic valve 200 to be switched off, so that the fire is turned off.

Preferably, referring to fig. 4 and 5 again, the valve stem 702 is connected to the cover 700 through a fixing frame 704, the fixing frame 704 may be a U-shaped bracket connected to the cover 700, and an end of the valve stem 702 away from the stopper 703 is connected to the U-shaped bracket; other shapes of the bracket may be used to fixedly support the valve stem 702.

Preferably, the electromagnetic valve with the reed switch used in the embodiment of the automatic fire-extinguishing method provided by the embodiment of the present invention has the same structure as the electromagnetic valve with the reed switch used in the embodiment of the automatic fire-extinguishing system, and is not described again.

It should be noted that the central processing unit and the thermocouple 300 according to the embodiment of the present invention are all common devices in the existing gas stove 100. The image acquisition device used in the embodiment may adopt a camera with an analysis processing function, and the specific model is not limited, and other electronic devices integrated with the camera may also be adopted.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The automatic flameout system is applied to a gas stove and comprises a central processing unit and a power supply, and is characterized by further comprising an image acquisition device, a thermocouple and an electromagnetic valve, wherein the image acquisition device is used for acquiring image information of the gas stove, a magnetic reed switch which is switched on and off along with the switching on and off of the electromagnetic valve is arranged in the electromagnetic valve, the central processing unit is bridged between the electromagnetic valve and the thermocouple, the other end of the electromagnetic valve is connected with the other end of the thermocouple, and the power supply is respectively connected with the central processing unit and the image acquisition device through the magnetic reed switch.

2. The automatic flameout system according to claim 1, wherein the solenoid valve comprises a valve body and a sealing plug for blocking a gas through hole, and the sealing plug is connected with an iron sheet matched with the electromagnet through a rebound mechanism; the rebound mechanism is provided with a permanent magnetic part moving along with the rebound mechanism, a magnetic reed switch is arranged at the position close to the maximum displacement of the permanent magnetic part, and a lead of the magnetic reed switch extends out of the valve body.

3. The automatic flameout system according to claim 2, wherein the rebound mechanism comprises a push rod, a spring and a stopper, one end of the push rod is connected with the sealing plug through the permanent magnet, one end of the push rod, which is far away from the permanent magnet, is connected with the iron sheet, the spring is sleeved on the push rod, and one end of the spring, which is close to the iron sheet, is in stopper fit through the stopper.

4. The automatic fire extinguishing system according to claim 2, wherein the reed switch is fixedly connected to the valve body through a switch support bracket.

5. The automatic fire extinguishing system as claimed in any one of claims 1 to 4, further comprising a cooker cover, wherein the cooker cover comprises a cover body, a valve hole formed in the cover body, and an air valve body penetrating through the valve hole and used for being identified by the image acquisition device, and the air valve body is in stop fit with the cover body when moving upwards to a boiling water position under the action of steam flow.

6. The automatic flameout system according to claim 5, wherein the hollow valve body and the cover are in stop fit through a valve rod, one end of the valve rod extends into the hollow valve body, a stop member is disposed at one end of the valve rod extending into the hollow valve body, the stop member is in stop fit with the hollow valve body, and one end of the valve rod, which is far away from the stop member, is connected to the cover.

7. The automatic flameout system according to claim 5, wherein the hollow valve body and the cover are in stop fit through a valve rod, one end of the valve rod extends into the hollow valve body, a stop member is disposed at one end of the valve rod extending into the hollow valve body, the stop member is in stop fit with the hollow valve body, and one end of the valve rod away from the stop member is connected with the cover through a fixing frame.