A gas stove flameout device

Abstract

The present invention discloses a gas stove flameout device, which includes a timer, a controller, and a baffle execution component. The baffle execution component and the timer are both electrically connected to the controller. The controller controls the baffle execution component to act to block or allow the fire holes of the central burner cap of the gas stove to face the thermocouple of the gas stove, so as to turn off the gas stove or allow the gas stove to be ignited. The gas stove flameout device of the present invention realizes the function of automatically turning off the gas stove at a fixed time through a physical hardware method. When the timing time of the timer arrives, the baffle execution component automatically acts to prevent the flame of the fire holes of the central burner cap from burning the head of the thermocouple. When the head of the thermocouple does not sense heat, the electromotive force will disappear, and the solenoid valve of the gas valve will automatically close, and the gas stove will turn off the flame, making the flameout safer and more reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas stoves, and particularly relates to a gas stove flameout device. Background Art

[0002] A gas stove refers to a kitchen appliance that uses gaseous fuels such as liquefied petroleum gas, artificial gas, and natural gas for direct fire heating, also known as a gas cooker, stove top, cooking range, or cooking appliance. Classified by gas source, gas stoves are mainly divided into liquefied gas stoves, gas stoves, and natural gas stoves. When a gas stove is working, gas enters the stove from the inlet pipe, passes through the adjustment of the gas valve (adjusted by the user through a knob) and enters the burner head, while mixing with a part of air at the same time. These mixed gases are ejected from the flame holes of the burner and ignited by the ignition device to form a flame, which is used to heat the cookware placed on the pot support. A gas stove is a kitchen appliance that releases heat by burning gas for household cooking and heating.

[0003] There are two ignition methods for gas stoves: electronic pulse ignition and piezoelectric ceramic ignition. Consumers are generally familiar with electronic pulse ignition. Most embedded stoves use this ignition device. Turning to a certain position will ignite the fire, which is very simple and convenient. However, this method requires replacing the battery. Piezoelectric ceramic ignition is mostly used for tabletop stoves, and its biggest advantage is that it does not require a battery. However, the ignition success rate is related to the ambient humidity. It is not easy to ignite when the humidity is high. In addition, when igniting, it is necessary to press the switch to ignite the fire, which is not as fast as electronic pulse ignition. Usually, the flameout protection device of a gas stove is very necessary, and relevant national standards also have mandatory regulations on this. There are three commonly used flameout protection methods in the market, including thermal type, thermoelectric type, and photoelectric type, etc.

[0004] In order to be more user-friendly during use, a gas stove with a function of automatically turning off the fire at a set time can be designed, so that it has the function of automatically turning off the fire at a set time when cooking soup. Most of the timed gas stoves on the market adopt electronic timing technology. This implementation method has poor stability. When the back electromotive force is small, the fire may not be turned off, and when the back electromotive force is large, there may be a problem that the electromotive force is too large, resulting in damage to the solenoid valve.

[0005] In order to solve the above technical problems, it is urgent to design a function in this field that can stably realize the automatic flameout of a timed gas stove and is safer and more reliable. Summary of the Invention

[0006] In view of the above technical problems, the technical solution of the present invention provides a gas stove flameout device to solve the problems of poor stability such as the fire may not be turned off when the back electromotive force is small, and the electromotive force may be too large, resulting in damage to the solenoid valve when the back electromotive force is large in the prior art.

[0007] A gas stove flameout device includes a timer, a controller, and a blocking execution component. The blocking execution component and the timer are both electrically connected to the controller. The controller controls the blocking execution component to act to block the fire holes of the central burner cap of the gas stove from the thermocouple of the gas stove or allow the fire holes of the central burner cap to face the thermocouple, thereby turning off the gas stove or allowing the gas stove to be ignited.

[0008] In one embodiment, the timer is a display timer with a display function for setting and displaying the timing time of the gas stove combustion. The controller receives the signal of the timer and controls the operation of the blocking execution component.

[0009] In one embodiment, the blocking execution component includes a driving part. The driving part is electrically connected to the controller. The driving part is connected to the central burner cap. The central burner cap has fire holes and fire hole avoidance positions. The driving part drives the central burner cap to act under the control of the controller to align the fire holes with the thermocouple or align the fire hole avoidance positions with the thermocouple.

[0010] In one embodiment, the driving part drives the central burner cap to rotate under the control of the controller to align the fire holes with the thermocouple or align the fire hole avoidance positions with the thermocouple.

[0011] In one embodiment, the fire holes and the fire hole avoidance positions are arranged adjacent to each other, and there are multiple groups of the adjacent fire holes and fire hole avoidance positions.

[0012] In one embodiment, the driving part has a connecting piece, and a boss is provided at the end of the connecting piece. A concave hole is provided in the inner ring of the central burner cap, and the concave hole of the central burner cap is in fit connection with the boss of the connecting rod.

[0013] In one embodiment, the driving part is a motor.

[0014] In one embodiment, a calibration sensor is further included. The calibration sensor is electrically connected to the controller. The calibration sensor can detect whether the fire holes of the central burner cap are aligned with the thermocouple and transmit a signal to the controller.

[0015] In one embodiment, a valve body assembly is included. The valve body assembly has a solenoid valve, and the thermocouple is connected to the solenoid valve.

[0016] In one embodiment, a bottom shell is further included. The valve body assembly, the timer, and the controller are all installed on the bottom shell.

[0017] The gas stove flameout device of the present invention realizes the function of automatically turning off the gas stove at a set time through physical hardware. When the set time of the timer arrives, the blocking execution component automatically operates to prevent the flame from the central burner hole from reaching the head of the thermocouple. When the head of the thermocouple does not sense heat, the electromotive force disappears, and the solenoid valve of the gas valve automatically closes, causing the gas stove to turn off the flame. This makes the flameout safer and more reliable, solving the problems in the prior art where the flameout device has poor stability, may not be able to turn off the fire when the reverse electromotive force is small, and may cause damage to the solenoid valve due to excessive electromotive force when the reverse electromotive force is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in more detail below based on embodiments with reference to the drawings.

[0019] Figure 1 is a schematic diagram of the overall structure of the gas stove flameout device of the present invention;

[0020] Figure 2 is an exploded schematic diagram of the overall structure of the gas stove flameout device of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the central burner of the gas stove flameout device of the present invention:

[0022] Figure 4 is a schematic diagram of the structure of the driving component in the gas stove flameout device of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the burner hole and the thermocouple avoidance state in the gas stove flameout device of the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the burner hole and the thermocouple facing state in the gas stove flameout device of the present invention.

[0025] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0026] Reference numerals are: 1, bottom shell; 2, valve body assembly; 3, timer; 4, burner; 5, controller; 6, thermocouple; 7, driving component; 401, central burner; 402, outer ring burner; 403, distributor; 404, burner head; 4011, burner hole; 4012, burner hole avoidance position; 4013, flat concave hole; 701, flat convex platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present invention will be further described below with reference to the drawings.

[0028] As Figures 1 to 4As shown in the figure, the gas stove flameout device of the present invention is applied to a gas stove, where the gas stove includes components such as a bottom shell 1, a valve body assembly 2, and a burner 4. The gas stove flameout device includes a timer 3 and a controller 5. The bottom shell 1 can be used to install the valve body assembly 2, the timer 3, the burner 4, and the controller 5; the valve body assembly 2 can be used to turn on and off the gas stove and adjust the flame size of the gas stove, and the burner 4 is used to output gas and burn to heat cooking utensils. The burner 4 is composed of parts such as a burner head 404, a flame divider 403, an outer ring burner cap 402, and a central burner cap 401. A thermocouple 6 is installed at the position of the burner head 404 of the burner 4, and the thermocouple 6 is connected to the valve body assembly 2. The thermocouple 6 has the function of sensing the flame.

[0029] The gas stove flameout device includes a timer 3, a controller 5, and a blocking execution component. The blocking execution component and the timer 3 are both electrically connected to the controller 5. The blocking execution component can block or activate the flame holes 4011 of the central burner cap 401 from the thermocouple 6 under the control of the controller, thereby turning off the gas stove or allowing the gas stove to be ignited. The above activation can be understood as that the flame holes 4011 of the central burner cap 401 are aligned with the thermocouple 6 and there is no blockage, allowing the flame in the flame holes 4011 to burn to the thermocouple 6.

[0030] The above timer 3 is preferably a display timer with a display function. The timer can be used to set and display the gas stove timing time. The timer does not have the function of turning off the gas stove and can set and display the set timing time. The controller 5 is used to control ignition and receive information from the timer, and control the operation of the blocking execution component after receiving the information from the timer.

[0031] As Figures 2 to 4 shown in the figure, the above blocking execution component includes a driving component 7. The driving component 7 can be arranged on the bottom shell 1. The driving component 7 is electrically connected to the controller 5. The driving component 7 is connected to the central burner cap 401. The driving component 7 can drive the central burner cap 401 to rotate. The central burner cap 401 has flame holes 4011 and flame hole avoidance positions 4012. The driving component 7 can drive the central burner cap 401 to rotate to allow the flame holes 4011 to be aligned with the thermocouple 6 or the flame hole avoidance positions 4012 to be aligned with the thermocouple 6.

[0032] The above-mentioned driving component 7 has a connecting piece, and a flat boss 701 is provided at the end of the connecting piece. A plurality of fire holes 4011 and fire hole avoidance positions 4012 are provided on the central burner cap 401. A flat concave hole 4013 is further provided in the inner ring of the central burner cap 401. The flat concave hole 4013 in the inner ring of the central burner cap 401 can be cooperatively connected with the flat boss 701 at the top end of the connecting rod of the driving component 7 to complete the sleeved installation. The driving component 7 can be a motor or other existing rotational driving devices. The fire holes 4011 and the fire hole avoidance positions 4012 on the central burner cap 401 are adjacently arranged and preferably include multiple groups, so that when the driving component 7 drives the central burner cap 401 to rotate, the fire holes of the central burner cap of the gas stove can be blocked from or allowed to be directly opposite to the thermocouple of the gas stove at multiple positions.

[0033] In addition, the gas stove flameout device further includes a calibration sensor, which is electrically connected to the controller. The calibration sensor can detect whether the fire hole 4011 of the central burner cap 401 is aligned with the thermocouple 6 and transmit a signal to the controller. The controller performs alignment calibration on the fire hole 4011 and the thermocouple 6 according to the signal of the calibration sensor.

[0034] During use, the user operates the valve body assembly 2, and the controller 5 discharges to ignite the burner 4. Under the normal combustion state, the user manipulates the timer to set the combustion time of the gas stove. Since the timer 3 and the controller 5 have a communication connection function, when the combustion time of the gas stove reaches the set time of the timer 3, the timer 3 transmits information to the controller 5. The driving component 7 is electrically connected to the controller 5, and the controller 5 controls the driving component 7 to rotate at a set angle in the first direction (for example, the clockwise direction). The flat concave hole 4013 in the inner ring of the central burner cap 401 is cooperatively connected with the flat boss 701 at the end of the connecting piece of the driving component 7, so that the driving component 7 drives the central burner cap 401 to rotate at a set angle in the first direction (for example, the clockwise direction), so that the fire hole avoidance position 4012 is arranged opposite to the thermocouple 6 (as Figure 5 shown), the flame of the fire hole 4011 of the central burner cap cannot burn to the head of the thermocouple 6, the thermocouple cannot sense the flame, the electromotive force of the thermocouple 6 will disappear, that is, the electric energy generated by heat energy will disappear and cannot maintain the opening of the solenoid valve. The solenoid valve cannot maintain the opening and then cuts off the gas passage of the valve body assembly 2, thereby automatically cutting off the gas path and closing the flame. Thus, the purpose of automatically closing the flame and the gas stove after the set time is reached is achieved.

[0035] After the flame is turned off, the controller 5 controls the driving component 7 to rotate by a set angle in the second direction (for example, counterclockwise). This process is preferably automatically completed by the controller controlling the driving component 7 according to a set programming procedure. For example, after detecting that the flame is turned off, the controller starts to control the driving component to rotate by the same angle in the second direction, so as to allow successful ignition when ignition is attempted again. Similarly, during this process, the driving component 7 drives the central burner cap 401 to rotate by a set angle in the second direction, for example, a reverse angle of the same size as the rotation in the first direction. At this time, the flame holes 4011 of the central burner cap 401 are just opposite to the head of the thermocouple 6 (as Figure 6 shown), the flame from the flame holes 4011 can burn to the head of the thermocouple 6, the thermocouple 6 can sense the flame, and the gas stove can burn normally when ignition is attempted again.

[0036] Although the present invention has been described with reference to the preferred embodiments, various modifications can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A gas stove flameout device, characterized in that, It includes a timer, a controller and a baffle execution component. The baffle execution component and the timer are both electrically connected to the controller. The controller controls the baffle execution component to act to block or allow the flame holes of the central burner cap of the gas stove to face the thermocouple of the gas stove, so as to turn off the gas stove or allow the gas stove to be ignited.

2. The gas stove flameout device according to claim 1, wherein, The timer is a display timer with a display function, which is used to set and display the timing time of the gas stove combustion. The controller receives the signal of the timer and controls the operation of the baffle execution component.

3. The gas stove flameout device according to claim 1 or 2, characterized in that, The baffle execution component includes a driving part. The driving part is electrically connected to the controller. The driving part is connected to the central burner cap. The central burner cap has flame holes and flame hole avoidance positions. The driving part drives the central burner cap to act under the control of the controller to align the flame holes with the thermocouple or align the flame hole avoidance positions with the thermocouple.

4. The gas stove flameout device according to claim 3, wherein, The driving part drives the central burner cap to rotate under the control of the controller to align the flame holes with the thermocouple or align the flame hole avoidance positions with the thermocouple.

5. The gas stove flameout device according to claim 3, characterized in that, The flame holes and the flame hole avoidance positions are arranged adjacent to each other. There are multiple groups of the adjacent flame holes and flame hole avoidance positions.

6. The gas stove flameout device according to claim 3, characterized in that, The driving part has a connecting piece. A boss is arranged at the end of the connecting piece. A concave hole is arranged on the inner ring of the central burner cap. The concave hole of the central burner cap is in fit connection with the boss of the connecting piece.

7. The gas stove flameout device according to claim 3, characterized in that, The driving part is a motor.

8. The gas stove flameout device according to claim 1 or 2, characterized in that, It further includes a calibration sensor. The calibration sensor is electrically connected to the controller. The calibration sensor can detect whether the flame holes of the central burner cap are aligned with the thermocouple and transmit a signal to the controller.

9. The gas stove flameout device according to claim 1 or 2, characterized in that, It includes a valve body assembly. The valve body assembly has a solenoid valve. The thermocouple is connected to the solenoid valve.

10. The gas stove flameout device according to claim 9, wherein It further includes a bottom shell. The valve body assembly, the timer and the controller are all installed on the bottom shell.

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