CN218379503U

CN218379503U - Cooking utensils with relight function

Info

Publication number: CN218379503U
Application number: CN202222163656.8U
Authority: CN
Inventors: 张雅云; 叶永彪; 裘志威; 胡忠怀; 潘江俊
Original assignee: ZHEJIANG ANDE ELECTRICAL APPLIANCES CO Ltd
Current assignee: ZHEJIANG ANDE ELECTRICAL APPLIANCES CO Ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-01-24
Anticipated expiration: 2032-08-16

Abstract

The utility model provides a cooking utensil with relighting function, which comprises an electronic controller, a valve component, an ion probe, a flame detection circuit and an igniter; the output end of the electronic controller is respectively and electrically connected with the valve component, the ion probe (3) and the input end of the igniter; the output end of the ion probe is electrically connected with the flame detection circuit; the flame detection circuit is wirelessly connected with the electronic controller; the ion probe is used for detecting flame, and the flame detection circuit is used for detecting the ionic current of the flame in the stove. The utility model discloses can be preferred when meetting unexpected flame-out the condition try to continue the fire in order to maintain user's cooking utensils user demand, even unable success that continues the fire, also can consume the gas of loss at the in-process of secondary ignition, compare in thermoelectric type flame-out protection device and further promoted the protection effect to the user.

Description

Cooking utensils with relight function

Technical Field

The utility model relates to a domestic gas cooking utensils technical field specifically is a cooking utensils with relight function contains gas cooking utensils, integrated kitchen, standing oven combination product.

Background

The thermocouple type flameout protection device is also called a thermoelectric type flameout protection device, and generates thermoelectric force when being heated. By using this feature, various protection devices can be constituted. The thermocouple type flameout protection device comprises a thermocouple and an electromagnetic valve, so the thermocouple type flameout protection device is also called a magnetic control safety valve and is a flameout protection device which is frequently used in modern gas appliances. The magnetic control safety valve uses a thermocouple as a heat sensitive element, and the thermocouple is placed in the flame range of a small fire or a main burner. When the thermocouple is heated, free electrons in two different metals receive heat energy, and the movement is intensified to form a thermoelectric potential, which is a thermoelectric energy conversion process. The electric potential generated by the thermocouple is connected into a coil of the electromagnetic valve to generate a magnetic field to enable the electromagnetic valve to act, the air valve is opened, the gas in the main air passage is conducted, and the main burner is maintained to burn normally. Once the flame detected by the thermocouple is extinguished, the potential at the leading-out wire end of the thermocouple is quickly reduced to zero, the magnetic control valve coil loses power, the magnetic control valve coil is quickly reset under the action of the spring, the valve pad seals the gas source channel, and gas supply is stopped.

The existing gas stoves mostly use a thermoelectric type flameout protection device to realize accidental flameout safety protection:

for example, CN201697179U discloses an infrared gas cooker with a thermoelectric flameout protection device, which comprises a housing, an infrared burner, a thermocouple, a safety plug valve, and an ignition burner. The stove is characterized in that: the central part of the infrared burner is provided with a through channel, the flame outlet of the ignition burner is positioned right below the channel, ignition flame can be transmitted to the infrared burner from the channel, a thermocouple also passes through the channel, the heat sensing part is bent by 90 degrees and then is positioned right above the porous ceramic radiation plate and is 3-8 mm higher than the combustion surface of the porous ceramic radiation plate, and the thermocouple is connected with a safety valve with specific performance parameters. The device has the advantages of simple structure, stable combustion, safety, reliability and attractive appearance, and has the functions of ignition, valve opening performance and rapid protection against accidental flameout.

For example, CN214305394U discloses a ball valve with a thermoelectric flameout protection device, which comprises a valve body and a ball valve core, wherein the valve body is provided with a valve rod, the valve rod is movably connected with the valve body, the ball valve core is arranged in the valve body, the valve rod is connected with the valve body, and the valve rod drives the ball valve core to rotate so as to control the gas flow in the valve body. The utility model discloses an adopt the ball case, can make the ball case normally work under the pressure of middling pressure and high-pressure gas, avoid the gas to leak, compare in traditional plug valve, withstand voltage is higher, more is fit for using on commercial kitchen, avoids the gas to leak, has eliminated the potential safety hazard to a certain extent.

The technical scheme disclosed above relates to a thermoelectric type flameout protection device, and because the thermocouple type safety protection device has the function of automatically closing a gas valve of a burner due to accidental flameout, the occurrence of accidents can be avoided to a certain extent; however, the thermoelectric type flameout protection device still has safety risks, and as a certain time is needed for detecting the thermoelectric force of flame from the existence to the nonexistence, and a small amount of gas still leaks in the time period, the thermoelectric type flameout protection device is still not perfect, and certain potential risks exist.

Therefore, a gas cooker with an automatic re-ignition function needs to be developed, when gas is instantly separated from flame or is extinguished in a short time, a first solution of the re-ignition system is to automatically ignite for 20-30 seconds continuously, and if the gas is not ignited, the system automatically closes a gas channel immediately, so that normal use can be ensured, and safety accidents can be avoided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas cooking utensils that can automatic function of reigniting after unexpected flame-out, solve the problem and the defect that above-mentioned prior art exists, can be preferential when meetting unexpected flame-out the condition try to continue the fire in order to maintain user's cooking utensils user demand, even unable success of continuing the fire, the in-process of secondary ignition or reignition also can consume the gas of loss, compare in thermoelectric type flame-out protection device and further promoted the protection effect to the user.

In order to achieve the purpose, the utility model provides a stove with a relighting function, which comprises an electronic controller, a valve component, an ion probe, a flame detection circuit and an igniter; the secondary ignition or re-ignition of the igniter and the closing of the valve assembly can be controlled by an electronic controller, the ion probe can detect flame, and the flame detection circuit can detect the ion current in the flame.

The output end of the electronic controller is respectively and electrically connected with the valve component, the ion probe and the input end of the igniter;

when the electronic controller is started, the valve component, the ion probe and the igniter are synchronously driven to work.

The output end of the ion probe is electrically connected with the flame detection circuit;

when the ion probe detects flame, the ion probe is synchronously communicated with the flame detection circuit, so that current can pass through the flame detection circuit.

The flame detection circuit is also in wireless connection with the electronic controller; the flame detection circuit can transmit the detected ionic current signal in the flame to the electronic controller in real time so as to assist the electronic controller to judge whether the cooking utensil is accidentally flameout.

The ion probe is used for detecting flame, and the flame detection circuit is used for detecting the ionic current of the flame in the stove.

Preferably, the electronic controller is provided with a re-ignition control circuit for supplying power to the igniter. The electronic controller turns the igniter off or on by controlling the reignition control circuit to open or close.

Preferably, the valve assembly is a gas channel plug valve.

The gas plug valve is quick and portable in opening and closing and is used for frequent operation; the fluid resistance of the plug valve is small; the plug valve has simple structure, relatively small volume, light weight and convenient maintenance; the plug valve also has good sealing performance; the device is not limited by the installation direction, and the flow direction of the medium can be arbitrary; no vibration and low noise.

Preferably, the valve assembly is a gas channel self-priming valve.

Preferably, the ion probe is simple to install, reliable in monitoring, sensitive to flame only, nonreactive to high temperature, strong in anti-interference performance, and strong in stability when used for monitoring small fire.

Preferably, when the flame detection circuit detects that the ionic current of flame in the cooker is less than 0.5uA, the igniter starts secondary ignition or re-ignition; when the flame detection circuit detects that the ionic current of flame in the stove is more than or equal to 0.5uA, the electronic controller cuts off the power supply to the re-ignition control circuit, and the secondary ignition or re-ignition of the igniter is finished; when the flame detection circuit detects that the ionic current of the flame in the cooker lasts for 20-30s and is always less than 0.5uA, the electronic controller cuts off the power supply to the valve assembly and the reignition control circuit at the same time.

The flame detection circuit can accurately detect the ionic current in flame and transmit a current signal to the electronic controller, and the electronic controller can judge the use state of the cooker and judge whether accidental flameout exists according to a preset current detection threshold value.

Preferably, the igniter is capable of a second ignition or re-ignition of the cooktop for a period of time.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses a cooking utensils with relighting function is equipped with some firearms, can be preferential to try to continue the fire in order to maintain user's cooking utensils user demand when meetting unexpected flame-out condition, if the flame-out that leads to of cooking utensils damage itself and can't continue the fire success, also can consume the gas that escapes in the process of secondary ignition or relighting, has further promoted the protection effect to the user compared with thermoelectric type flame-out protection device;

and can also prevent the product because the pipeline that the use leads to for the first time supplies gas badly, or the misleading factor of unexpected flame-out that the short time leaves flame or windy state caused, the time point firearm can guarantee that the cooking utensils continue normal use meeting these circumstances.

2. The utility model discloses an ion probe can add the survey flame, flame detection circuitry can detect the ionic current size in the flame accurately to give electronic controller with current signal transmission, electronic controller can judge the user state of cooking utensils and whether there is the unexpected flame-out condition according to predetermined current detection threshold value.

3. The utility model discloses an ion probe installation is simple, and the monitoring is reliable, only has the response to flame, does not have the reaction to the high temperature, has strong interference killing feature, and the little fire of monitoring has very strong stability.

Drawings

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

FIG. 1 is a schematic view of the operation relationship of the components of a cooking stove with a relighting function according to the present invention;

FIG. 2 is a schematic view of the operation principle of a cooking utensil with a relighting function according to the present invention;

FIG. 3 is a circuit diagram of a flame detection circuit according to the present invention;

fig. 4 is a circuit diagram of the reignition control circuit according to the invention.

The electronic controller 1, the reignition control circuit 11, the valve assembly 2, the ion probe 3, the flame detection circuit 4, and the igniter 5 are shown in the figure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, 3 and 4, the utility model provides a cooking utensil with relighting function, which comprises an electronic controller 1, a valve component 2, an ion probe 3, a flame detection circuit 4 and an igniter 5; the ion probe 3 and the flame detection circuit 4 detect the ionic current in the flame of the stove and transmit signals to the electronic controller 1, and the electronic controller 1 opens or closes the igniter 5 and the valve assembly 2 according to the signals;

the output end of the electronic controller 1 is respectively electrically connected with the input ends of the valve component 2, the ion probe 3 and the igniter 5; when the stove is started, the electronic controller 1 synchronously opens the valve component 2 and the ion probe 3 and provides power for the flame detection circuit 4;

the output end of the ion probe 3 is electrically connected with the flame detection circuit 4;

when the ion probe 3 detects flame, the flame detection circuit 4 is synchronously communicated, so that the flame detection circuit 4 is electrified and detects the ionic current in the flame.

The flame detection circuit 4 is also in wireless connection with the electronic controller 1;

the ion probe 3 is used for detecting flame, and the flame detection circuit 4 is used for detecting the ionic current of the flame in the stove.

Because positive and negative ions exist in the flame, when an electric field is applied to the flame, an external circuit can generate weak current, and meanwhile, the flame ion current has obvious unidirectional conductivity; and increases with increasing flame intensity. Over a range of voltages, the ion current increases as the voltage applied to the flame increases. The detection function in the ion probe can be high level when a flame signal is available; the no flame signal is low as a control signal.

If the ion current that ion probe 3 and flame detection circuit 4 detected reaches the default, then the cooking utensils normal work, otherwise then start igniter 5 or close valve subassembly 2 to prevent that the gas from leaking and causing the threat to the user.

As shown in fig. 1 and 2, the electronic controller 1 is provided with a reignition control circuit 11 for supplying the igniter 5 with electric power. The electronic controller 1 controls the on-off of the re-ignition control circuit 11 to achieve the purpose of controlling the igniter 5 to be turned on or off.

The valve component 2 is a gas channel plug valve. The plug valve is rotated by 90 degrees to enable the passage port on the plug valve to be communicated with or separated from the passage port on the valve body, so that the opening or the closing of the plug valve is realized.

The valve assembly 2 is a gas channel self-priming valve.

As shown in fig. 2, when the flame detection circuit 4 detects that the ionic current of the flame in the cooker is less than 0.5uA, the igniter 5 starts to perform secondary ignition or re-ignition; when the flame detection circuit 4 detects that the ionic current of flame in the stove is greater than or equal to 0.5uA, the electronic controller 1 cuts off the power supply to the re-ignition control circuit 11, and the igniter 5 finishes secondary ignition or re-ignition; when the flame detection circuit 4 detects that the ionic current of the flame in the stove lasts for 20-30s and is always less than 0.5uA, the electronic controller 1 cuts off the power supply to the valve assembly 2 and the reignition control circuit 11 at the same time. If the detected ion current is less than 0.5uA, the range is in a flameout state, then the electronic controller 1 starts to supply power to the reignition control circuit 11, then the reignition control circuit 11 supplies power to the igniter 5 to enable the igniter to be turned on again and to be ignited for the second time or to be reignited, then the ion probe 3 and the flame detection circuit 4 continue to detect the size of the ion current in the flame, the igniter 5 continuously ignites during the period, if the ion current in the flame in the range is detected to be more than 0.5uA during the period, the ignition is successful, then the electronic controller 1 cuts off the power supply to the reignition control circuit 11, and the igniter 5 stops igniting; if during this period it is detected that the ion current in the flame in the hob is still continuously less than 0.5uA in 20-30s, indicating that ignition is not successful, the valve assembly 2 needs to be closed in time to prevent gas leakage, then the electronic controller 1 cuts off the power supply to the valve assembly 2 and the re-ignition control circuit 11 at the same time, the igniter 5 stops igniting, and the valve assembly 2 stops passing gas.

When a user uses the cooker, the electronic controller 1 controls the valve assembly 2 and the ion probe 3 to be opened, when the ion probe 3 detects flame, the flame detection circuit 4 is synchronously communicated, so that the flame detection circuit 4 is electrified and detects the ionic current in the flame, the ionic current is synchronously transmitted to the electronic controller 1 in a wireless signal mode, and if the detected ionic current is more than 0.5uA, the cooker is normally used; if the detected ion current is less than 0.5uA, the range is in a flameout state, then the electronic controller 1 starts to supply power to the reignition control circuit 11, then the reignition control circuit 11 supplies power to the igniter 5 to start and perform secondary ignition or reignition, then the ion probe 3 and the flame detection circuit 4 continue to detect the ion current in flame, the igniter 5 continuously ignites during the period, if the ion current in the flame in the range is detected to be more than 0.5uA during the period, the ignition is successful, then the electronic controller 1 cuts off the power supply to the reignition control circuit 11, and the igniter 5 stops ignition; if during this period it is detected that the ion current in the flame in the hob is still continuously less than 0.5uA in 20-30s, indicating that ignition is not successful, the valve assembly 2 needs to be closed in time to prevent gas leakage, then the electronic controller 1 cuts off the power supply to the valve assembly 2 and the re-ignition control circuit 11 at the same time, the igniter 5 stops igniting, and the valve assembly 2 stops passing gas.

Furthermore, the terms "large," "small," "inner," "outer," "on," "off," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated otherwise, the relative steps, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cooking utensil with a relighting function is characterized by comprising an electronic controller (1), a valve component (2), an ion probe (3), a flame detection circuit (4) and an igniter (5);

the output end of the electronic controller (1) is respectively and electrically connected with the input ends of the valve component (2), the ion probe (3) and the igniter (5);

the output end of the ion probe (3) is electrically connected with the flame detection circuit (4);

the flame detection circuit (4) is wirelessly connected with the electronic controller (1);

the ion probe (3) is used for detecting flame, and the flame detection circuit (4) is used for detecting the ionic current of the flame in the stove.

2. Hob with a re-ignition function according to claim 1, characterized in, that a re-ignition control circuit (11) is provided in the electronic controller (1) for powering the igniter (5).

3. Hob with relighting function according to claim 1 or 2, characterized in that said valve assembly (2) is a gas channel cock.

4. Hob with a relighting function according to claim 1 or 2, characterized in that said valve assembly (2) is a gas channel self-priming valve.

5. Hob with a re-ignition function according to claim 1 or 2, characterized in, that when said flame detection circuit (4) detects an ion current of the flame in the hob being less than 0.5uA, the igniter (5) starts a re-ignition or re-ignition;

when the flame detection circuit (4) detects that the ionic current of flame in the stove is greater than or equal to 0.5uA, the electronic controller (1) cuts off the power supply to the re-ignition control circuit (11), and the igniter (5) performs secondary ignition or re-ignition is finished;

when the flame detection circuit (4) detects that the ionic current of the flame in the stove lasts for 20-30s and is always less than 0.5uA, the electronic controller (1) cuts off the power supply to the valve assembly (2) and the reignition control circuit (11) at the same time.