CN115751400A

CN115751400A - Fire shutting device for gas stove

Info

Publication number: CN115751400A
Application number: CN202211414627.2A
Authority: CN
Inventors: 邓祥; 王光汉; 孙帅; 段聪聪; 周文通; 王运发
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-07

Abstract

The invention discloses a gas stove fire shutting device which comprises a timer, a controller and a blocking execution assembly, wherein the blocking execution assembly and the timer are electrically connected with the controller, and the controller controls the blocking execution assembly to act so as to block a fire hole of a central fire cover of a gas stove from a thermocouple of the gas stove or allow the fire hole of the central fire cover to be opposite to the thermocouple, so that the gas stove is shut down or the gas stove is allowed to be ignited. The gas stove fire shutting device realizes the function of timing automatic fire shutting of the gas stove through a physical hardware method, when the timing time of the timer is up, the separation execution assembly automatically acts to enable the flame of the fire hole of the central fire cover not to burn to the head of the thermocouple, the electromotive force disappears under the condition that the head of the thermocouple cannot sense heat, the electromagnetic valve of the gas valve automatically shuts, the gas stove shuts off the flame, and the fire shutting is safer and more reliable.

Description

Fire shutting device for gas stove

Technical Field

The invention belongs to the technical field of gas cookers, and particularly relates to a fire shutting device of a gas cooker.

Background

The gas stove is a kitchen utensil heated by direct fire with liquefied petroleum gas, artificial gas, natural gas and other gas fuels, and is also called as a gas stove, a stove plate, a stove top and a stove. The gas stove is divided into a liquefied gas stove, a gas stove and a natural gas stove according to the gas source. When the gas stove works, gas enters the stove from the gas inlet pipe, enters the stove head through the adjustment of the gas valve (adjusted by a user through a knob), and simultaneously mixes a part of air, the mixed gas is sprayed out from the fire holes of the distributor and is ignited by the ignition device to form flames, and the flames are used for heating cookers on the pot support. The gas stove is a kitchen appliance which releases heat through burning gas and is used for household cooking and heating.

The ignition mode of the gas stove comprises electronic pulse ignition and piezoelectric ceramic ignition. Electronic pulse ignition consumers are generally familiar with that most of the ignition devices adopted by the built-in cookers are very simple and convenient to ignite after being twisted to a certain position, but the batteries need to be replaced in the mode. Piezoelectric ceramic ignition is mostly used for table stoves, the greatest advantage being that no battery is required. However, the success rate of ignition is related to the ambient humidity, and ignition is not easy to occur when the humidity is high. In addition, the switch needs to be pressed to ignite the fire, and the fire is not ignited as fast as the electronic pulse. Normally, a flameout protection device for a gas range is very necessary, and the relevant national standards also impose the regulations for this. Three flame-out protection modes are commonly used in the market, including a thermal type, a thermoelectric type, a photoelectric type and the like.

In order to be more humanized in the using process, the gas stove with the function of timing and automatic fire shutting can be designed, so that the function of timing and automatic fire shutting can be realized during boiling. Electronic timing technology is mostly adopted by timing gas cookers in the market. This implementation has poor stability, and when the back electromotive force is small, the situation that fire cannot be extinguished may occur, and when the back electromotive force is large, the problem that the electromagnetic valve is damaged due to excessive electromotive force may occur.

In order to solve the above technical problems, there is a need in the art to design a gas stove capable of stably achieving the function of timing the automatic fire shutoff of the gas stove, and being safer and more reliable.

Disclosure of Invention

Aiming at the technical problems, the technical scheme of the invention provides a fire-shutting device for a gas stove, which is used for solving the problems that fire can not be shut down when the back electromotive force is small, and the electromagnetic valve is damaged due to overlarge electromotive force when the back electromotive force is large in the prior art, and the like.

A fire stopping device of a gas stove comprises a timer, a controller and a blocking execution assembly, wherein the blocking execution assembly and the timer are electrically connected with the controller, and the controller controls the blocking execution assembly to act so as to block a fire hole of a central fire cover of the gas stove from a thermocouple of the gas stove or allow the fire hole of the central fire cover to be opposite to the thermocouple, so that the gas stove is closed or the gas stove is allowed to be ignited.

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, and the controller receives a signal of the timer and controls the operation of the blocking execution assembly.

In one embodiment, the blocking execution assembly comprises a driving part, the driving part is electrically connected with the controller, the driving part is connected with the central fire cover, the central fire cover is provided with a fire hole and a fire hole avoiding space, and the driving part drives the central fire cover to act under the control of the controller so as to align the fire hole with the thermocouple or align the fire hole avoiding space with the thermocouple.

In one embodiment, the driving part drives the central fire cover to rotate under the control of the controller to align the fire hole with the thermocouple or align the fire hole with the thermocouple.

In one embodiment, the fire holes are disposed adjacent to the fire hole clearance, and the fire holes and the fire hole clearance disposed adjacent to each other include a plurality of groups.

In one embodiment, the driving part is provided with a connecting piece, the end part of the connecting piece is provided with a boss, the inner ring of the central fire cover is provided with a concave hole, and the concave hole of the central fire cover is matched and connected with the boss of the connecting rod.

In one embodiment, the drive member is a motor.

In one embodiment, the thermocouple device further comprises a calibration sensor electrically connected to the controller, wherein the calibration sensor can detect whether the fire hole of the central fire cover is aligned with the thermocouple and transmit a signal to the controller.

In one embodiment, a valve body assembly is included having a solenoid valve with which the thermocouple is connected.

In one embodiment, the valve further comprises a bottom shell, and the valve body assembly, the timer and the controller are all mounted on the bottom shell.

The gas stove fire shutting device realizes the function of timing automatic fire shutting of the gas stove through a physical hardware method, when the timing time of the timer is up, the separation execution assembly automatically acts to enable flame of the fire hole of the central fire cover to be incapable of burning to the head of the thermocouple, electromotive force disappears under the condition that the head of the thermocouple cannot sense heat, the electromagnetic valve of the gas valve automatically closes, the gas stove closes the flame, fire shutting is safer and more reliable, and the problems that in the prior art, the stability of the fire shutting device is poor, fire can not be shut down when reverse electromotive force is small, and the electromagnetic valve is damaged due to the fact that the electromotive force is too large when the reverse electromotive force is large are solved.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the fire shutting device of the gas range of the present invention;

FIG. 2 is an exploded view of the entire gas range fire-shutting device of the present invention;

fig. 3 is a schematic structural view of a central fire cover in the fire-shutting device of the gas stove of the present invention:

FIG. 4 is a schematic structural view of a driving part in the fire shutting apparatus for a gas range according to the present invention;

FIG. 5 is a schematic structural view of the fire hole and thermocouple avoiding state in the fire-shutting device of the gas stove of the present invention;

FIG. 6 is a schematic structural view showing a state in which a fire hole and a thermocouple are aligned in a fire-shutting device of a gas range according to the present invention.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

The reference signs are: 1. a bottom case; 2. a valve body assembly; 3. a timer; 4. a burner; 5. a controller; 6. a thermocouple; 7. a drive member; 401. a central fire cover; 402. an outer ring fire cover; 403. a fire divider; 404. a furnace end; 4011. fire holes; 4012. avoiding vacant positions by fire holes; 4013. concave holes are formed in the flat positions; 701. flat boss.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1 to 4, the fire shutting device for a gas stove of the present invention is applied to a gas stove, wherein the gas stove comprises a bottom case 1, a valve body assembly 2, a burner 4, and the like, and the fire shutting device for a gas stove comprises a timer 3 and a controller 5. The bottom shell 1 can be used for installing a valve body assembly 2, a timer 3, a burner 4 and a controller 5; the valve body assembly 2 can be used for opening and closing a gas stove and adjusting the flame size of the gas stove, the combustor 4 is used for outputting gas and combusting the gas to heat a cooking utensil, and the combustor 4 comprises a furnace end 404, a distributor 403, an outer ring fire cover 402, a center fire cover 401 and the like. A thermocouple 6 is installed at the position of a furnace end 404 of the combustor 4, the thermocouple 6 is connected with the valve body assembly 2, and the thermocouple 6 has a flame sensing function.

The gas stove fire shutting device comprises a timer 3, a controller 5 and a blocking execution assembly, wherein the blocking execution assembly and the timer 3 are electrically connected with the controller 5, the blocking execution assembly acts under the control of the controller to block or activate the fire hole 4011 of the central fire cover 401 and the thermocouple 6, so that the gas stove is turned off or the ignition of the gas stove is allowed, and the activation can be understood that the fire hole 4011 of the central fire cover 401 is aligned with the thermocouple 6 and is not blocked, and the flame in the fire hole 4011 is allowed to burn to the thermocouple 6.

The timer 3 is preferably a display timer having a display function, the timer may be used to set and display a gas range timing time, and the timer may not have a function of turning off the gas range, and may set and display the set timing time. The controller 5 is used for controlling ignition and receiving information of the timer, and controlling the operation of the gear shift execution component after receiving the information of the timer.

As shown in fig. 2 to 4, the blocking execution assembly includes a driving component 7, the driving component 7 can be disposed on the bottom case 1, the driving component 7 is electrically connected to the controller 5, the driving component 7 is connected to the central fire cover 401, the driving component 7 can drive the central fire cover 401 to rotate, the central fire cover 401 has fire holes 4011 and fire hole avoiding positions 4012, and the driving component 7 can drive the central fire cover 401 to rotate so as to allow the fire holes 4011 to align with the thermocouples 6 or the fire hole avoiding positions 4012 to align with the thermocouples 6.

Above-mentioned drive component 7 has the connecting piece, and the tip of connecting piece is provided with flat position boss 701, is provided with a plurality of fire holes 4011 and fire hole clearance position 4012 on the central fire lid 401, and central fire lid 401 inner circle still is provided with flat position shrinkage pool 4013, and the flat position shrinkage pool 4013 of inner circle of central fire lid 401 can be connected with the flat position boss 701 cooperation on drive component 7's the connecting rod top, and the completion embolias the installation. The drive member 7 may be a motor or other known rotary drive means. The fire holes 4011 and the fire hole clearance 4012 of the central fire cover 401 are disposed adjacent to each other and preferably comprise a plurality of groups, so that when the driving part 7 drives the central fire cover 401 to rotate, the fire holes of the central fire cover of the gas stove can be blocked from the thermocouple of the gas stove or the fire holes of the central fire cover can be allowed to be aligned with the thermocouple in a plurality of positions.

In addition, the gas-cooker is closed fire device and is still including the calibration sensor, calibration sensor and controller electric connection, and whether the fire hole 4011 of calibration sensor detectable center fire lid 401 aligns with thermocouple 6 to transmit the signal to the controller, the controller aligns the calibration according to the signal of calibration sensor to fire hole 4011 and thermocouple 6.

When the gas stove is used, a user operates the valve body assembly 2, the controller 5 discharges to ignite the burner 4, the user controls the timer to set the combustion time of the gas stove under a normal combustion state, 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 part 7 is electrically connected with the controller 5, the controller 5 controls the driving part 7 to rotate according to the set angle in the first direction (for example, the clockwise direction), the inner ring flat concave hole 4013 of the central fire cover 401 is connected with the flat boss 701 at the end part of the connecting part of the driving part 7 in a matching manner, so that the driving part 7 drives the central fire cover 401 to rotate according to the set angle in the first direction (for example, the clockwise direction), the fire hole avoidance concave hole 4012 and the thermocouple 6 are oppositely arranged (as shown in fig. 5), the flame of the central fire cover fire hole 4011 cannot burn to the head part of the thermocouple 6, the thermocouple cannot sense the flame, the electromotive force of the thermocouple 6 disappears, the electric energy generated by heat energy disappears, the electromagnetic valve body cannot be maintained to be opened, the electromagnetic valve body assembly cannot be opened, and the electromagnetic valve body cannot be closed, and the gas path of the gas channel of the electromagnetic valve cannot be closed automatically, so that the gas channel cannot be closed. Therefore, the purposes of automatically closing the flame and closing the gas stove after the set time is achieved are achieved.

After the flame is turned off, the controller 5 controls the driving part 7 to rotate in a second direction (for example, in a counterclockwise direction) by a set angle, and the process is preferably automatically completed by the controller controlling the driving part 7 according to a set programmed program, for example, the controller starts to control the driving part to rotate in the second direction by the same angle after the flame is detected to be turned off, so as to allow the ignition to be successful when the ignition is performed again. Similarly, in the process, the driving part 7 drives the central fire cover 401 to rotate in a second direction by a set angle, for example, a reverse angle with the same size as the first direction, at this time, the fire hole 4011 of the central fire cover 401 is just opposite to the head of the thermocouple 6 (as shown in fig. 6), the flame of the fire hole 4011 can burn to the head of the thermocouple 6, the thermocouple 6 can sense the flame, and the gas stove can normally burn when the gas stove is ignited again.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a gas-cooker closes fiery device, its characterized in that includes timer, controller and separates and keeps off the executive component, separate keep off the executive component with the timer all with controller electric connection, the controller control separate keep off the executive component action with separate the fire hole of the central burner cap of gas-cooker with the thermocouple of gas-cooker or allow the fire hole of central burner cap and thermocouple just right to close the gas-cooker or allow the gas-cooker ignition.

2. The fire shutting apparatus for gas range as claimed in claim 1, wherein the timer is a display timer with display function for setting and displaying the timing time of the combustion of the gas range, and the controller receives the signal of the timer and controls the operation of the blocking performing assembly.

3. The gas stove fire-shutting device according to claim 1 or 2, wherein the partition actuating assembly comprises a driving part, the driving part is electrically connected with the controller, the driving part is connected with the central fire cover, the central fire cover is provided with a fire hole and a fire hole avoiding space, and the driving part drives the central fire cover to act under the control of the controller to align the fire hole with the thermocouple or align the fire hole avoiding space with the thermocouple.

4. The gas range fire shutting device of claim 3, wherein the driving part drives the center fire cover to rotate under the control of the controller to align the fire hole with the thermocouple or align the fire hole with the thermocouple while avoiding a vacancy.

5. The gas stove fire-shutting device according to claim 3, wherein the fire holes are disposed adjacent to the fire hole clearance, and the fire holes and the fire hole clearance disposed adjacent to each other comprise a plurality of groups.

6. The fire shutting device for the gas stove as claimed in claim 3, wherein the driving part has a connecting member, a boss is provided at an end of the connecting member, a concave hole is provided at an inner ring of the central fire cover, and the concave hole of the central fire cover is fittingly connected with the boss of the connecting rod.

7. The gas range fire shutting device of claim 3, wherein the driving means is a motor.

8. The gas range fire shutting device of claim 1 or 2, further comprising a calibration sensor electrically connected to the controller, the calibration sensor being capable of detecting whether the fire hole of the center fire cover is aligned with the thermocouple and transmitting a signal to the controller.

9. The gas range fire shutting device according to claim 1 or 2, comprising a valve body assembly having a solenoid valve, the thermocouple being connected to the solenoid valve.

10. The gas range fire shutting device of claim 9, further comprising a bottom case, wherein the valve body assembly, the timer and the controller are all mounted on the bottom case.