Pot support, stove and safety protection device for stove

Abstract

The utility model provides a pot support, a stove and a safety protection device for the stove, the pot support comprises a base and at least two foot pieces arranged on the base, the at least two foot pieces are used for supporting the pot, the tops of the at least two foot pieces are provided with conductive parts, and the conductive parts are used for being electrically connected with a controller; wherein at least one conductive part comprises at least two conductors. The conductive parts are arranged on the foot pieces, when conductive cookware is placed on the pot support, the conductive parts and the controller form a closed loop, two conductors are arranged on the conductive parts, and in the process that a cooker heats the cookware placed on the pot support, due to the fact that the two conductors are made of different materials, the cookware can be heated by the cooker. When the cooker is heated, thermoelectric electromotive force, namely thermoelectromotive force, can be generated, and the controller can adjust firepower according to the thermoelectromotive force, so that whether cookware is placed on the cooker or not is detected, the firepower is adjusted according to whether the cookware is placed on the cooker or not, and safety protection of the cooker is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a pot support, a stove and a safety protection device for the stove. Background Art

[0002] During cooking, after the user ignites the stove, the stove often burns dry without a pot. When the stove is in the dry burning state, if the user forgets to adjust the firepower or it is inconvenient to adjust the firepower, on the one hand, it will cause a waste of gas, and on the other hand, the flame will easily cause other items to burn, thus creating a danger. In the prior art, it is not possible to detect whether a pot is placed on the stove in time, and it is impossible to adjust the firepower in time when the stove burns dry without a pot. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art that it is not possible to timely detect whether a pot is placed on the stove and to timely adjust the firepower when there is no pot and dry burning, and to provide a pot support, a stove and a safety protection device for the stove.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a pot support, comprising a base and at least two legs arranged on the base, the at least two legs are used to support the pot, the tops of the at least two legs are provided with conductive parts, and the conductive parts are used to be electrically connected to an external controller; wherein at least one of the conductive parts includes at least two conductors.

[0006] Optionally, an insulating layer is provided on the surface of the pot support except the conductive portion.

[0007] Optionally, the at least two conductors are metals of different materials.

[0008] Optionally, the pot support specifically includes four legs, wherein the tops of two legs are provided with conductive parts.

[0009] The utility model also provides a safety protection device for a stove, comprising a controller and the aforementioned pot support;

[0010] The conductive parts at the top of the at least two pins are electrically connected to the controller;

[0011] The controller is used to output a first regulating signal to the electric-controlled regulating valve of the cooker when a thermoelectromotive force signal is detected, and to output a second regulating signal to the electric-controlled regulating valve when the thermoelectromotive force signal is not detected; wherein the first regulating signal is used to instruct the electric-controlled regulating valve to adjust to a first firepower, and the second regulating signal is used to instruct the electric-controlled regulating valve to adjust to a second firepower that is less than the first firepower.

[0012] Optionally, an insulating layer is provided on the surface of the pot support except the conductive portion.

[0013] Optionally, the at least two conductors are metals of different materials.

[0014] Optionally, the conductive part is electrically connected to the controller via a wire.

[0015] Optionally, the pot support specifically includes four legs, wherein the tops of two legs are provided with conductive parts.

[0016] The utility model also provides a cooker, comprising an electrically controlled regulating valve and the aforementioned safety protection device, wherein the electrically controlled regulating valve is electrically connected to a controller in the safety protection device.

[0017] On the basis of conforming to the common sense in the art, the above optional conditions can be arbitrarily combined to obtain the preferred embodiments of the utility model.

[0018] The positive progressive effect of the utility model is that by arranging a conductive part on the foot piece, when a conductive cookware is placed on the pot support, a closed loop is formed with the controller, and there are two conductors on the conductive part. When the cooker heats the cookware placed on the pot support, due to the different materials of the two conductors, a temperature difference electromotive force, i.e., a thermoelectric force, is generated when heated. The controller can adjust the firepower according to the thermoelectric force, thereby realizing detection of whether a cookware is placed on the cooker, and adjusting the firepower according to whether a cookware is placed on the cooker, thereby realizing safety protection of the cooker and reducing the danger caused by dry burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a pot support provided in Example 1 of the utility model.

[0020] Figure 2 This is a structural schematic diagram of the conductive part of a pot support provided in Example 1 of the utility model.

[0021] Figure 3 This is a schematic structural diagram of a safety protection device for a stove provided in Example 2 of the utility model.

[0022] Figure 4This is a schematic structural block diagram of a stove provided in Example 3 of the utility model. DETAILED DESCRIPTION

[0023] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0024] Example 1

[0025] The utility model embodiment provides a pot support, referring to Figure 1 The pot support includes a base 11 and at least two legs 12 arranged on the base 11.

[0026] At least two legs 12 are used to support the cooker, and a conductive portion 121 is provided on the top of at least two legs 12, and the conductive portion 121 is used to be electrically connected to an external controller; wherein at least one conductive portion includes at least two conductors.

[0027] The top of the foot piece is used to contact the cookware. In an optional embodiment, the entire foot piece can be a conductor, and the conductive part located on the top of the foot piece is integrated with the other parts of the foot piece.

[0028] In an optional embodiment, the surface of the pot support other than the conductive part is provided with an insulating layer, and the insulating layer can be provided by performing insulating enamel treatment on the outer surface. By providing an insulating layer on the surface other than the conductive part, the detection accuracy of the pot support for the pot can be improved, and a loop is prevented from being formed due to contact with the conductor at other positions, thereby accidentally causing the controller to receive thermal electromotive force.

[0029] In an optional embodiment, at least one conductive portion includes two conductive metals of different materials, Figure 2 The top of the foot piece can be made of a different type of metal from the other parts of the foot piece, such as copper, steel, etc. When the cooker heats the pot placed on at least two conductive feet, due to the different materials of the two conductors, a temperature difference electromotive force, i.e., a thermoelectric electromotive force signal, will be generated when heated. Since the pot is placed on the conductive foot piece, the pot is a conductor, and the pot and the controller form a closed loop. The controller can receive the thermoelectric electromotive force signal generated by the two conductors. However, when no pot is placed on the conductive foot piece, a closed loop cannot be formed, and the controller cannot receive the thermoelectric electromotive force signal, thereby realizing the detection of whether there is a pot on the pot support.

[0030] In an optional embodiment, the pot support has four legs, two of which are provided with conductive parts on top, and the conductive part on one of the legs includes at least two conductors. The two legs provided with conductive parts can be located at diagonal positions of the pot support. The controller is electrically connected to the two conductive legs, and the other two legs only support the pot, thereby improving the stability of the pot on the pot support.

[0031] In the embodiment of the utility model, a conductive part is arranged on the foot piece. When a conductive cookware is placed on the pot support, a closed loop is formed with the controller. There are two conductors on the conductive part. When the cooker heats the cookware placed on the pot support, due to the different materials of the two conductors, a temperature difference electromotive force, i.e., a thermoelectric force, is generated when heated. The controller can adjust the firepower according to the thermoelectric force, thereby realizing detection of whether a cookware is placed on the cooker, and adjusting the firepower according to whether a cookware is placed on the cooker, thereby realizing safety protection of the cooker and reducing the danger caused by dry burning.

[0032] Example 2

[0033] The utility model provides a safety protection device for a stove, referring to Figure 3 , including a controller 21 and the pot support 22 in Example 1.

[0034] The conductive parts on the top of at least two feet are electrically connected to the controller 21; the controller 21 is used to output a first adjustment signal to the electric control valve of the stove when a thermoelectromotive force signal is detected, and output a second adjustment signal to the electric control valve when no thermoelectromotive force signal is detected. The flow rate of the gas can be adjusted by adjusting the opening of the electric control valve, thereby adjusting the firepower of the stove; wherein the first adjustment signal is used to instruct the electric control valve to adjust to a first firepower, and the second adjustment signal is used to instruct the electric control valve to adjust to a second firepower that is less than the first firepower.

[0035] In an optional embodiment, the first adjustment signal can be used to indicate that the firepower should be maintained unchanged. When the electronically controlled regulating valve receives the signal for indicating that the firepower should be maintained unchanged, namely the first adjustment signal, it indicates that a pot is placed on the pot support, and the firepower should be maintained unchanged at this time.

[0036] In another optional embodiment, when the electric-controlled regulating valve does not receive any electric signal, it indicates that a pot is placed on the pot support, and the fire power is maintained unchanged.

[0037] In an optional embodiment, when the electric control regulating valve receives the second regulating signal, it indicates that no pot is placed on the pot support, and the electric control regulating valve is intercepted to reduce the firepower at this time; and when the first regulating signal is received within a preset time, the firepower is restored to the level before the reduction, and the preset time can be one minute. For example, when the pot leaves the conductive foot, the controller outputs the second regulating signal to the electric control regulating valve, and the electric control regulating valve reduces the firepower in response to the second regulating signal. If the pot is placed back on the pot support within one minute, the controller outputs the first regulating signal to the electric control regulating valve, and the electric control regulating valve restores the firepower in response to the first regulating signal. Thus, when the pot leaves the pot support in a short time, the electric control regulating valve can also automatically reduce the firepower to save gas, and restore the firepower in time when the pot is placed back on the pot support, without the need for manual adjustment by the user, which saves gas and facilitates the user's cooking.

[0038] In another optional embodiment, when the controller does not receive the thermoelectromotive force signal for a preset time period, the controller outputs a third regulating signal to the electronically controlled regulating valve, and the third regulating signal is used to instruct the electronically controlled regulating valve to turn off the flame. For example, when the controller does not receive the thermoelectromotive force signal for more than two minutes, the controller outputs the third control signal to the electronically controlled regulating valve, and the electronically controlled regulating valve cuts off the output of the gas in response to the third control signal, thereby extinguishing the flame, saving gas, and reducing danger.

[0039] In the embodiment of the utility model, a conductive part is arranged on the foot piece. When a conductive cookware is placed on the pot support, a closed loop is formed with the controller. There are two conductors on the conductive part. When the cooker heats the cookware placed on the pot support, due to the different materials of the two conductors, a temperature difference electromotive force, i.e., a thermoelectric electromotive force, is generated when heated. The controller can output a regulating signal to the electronically controlled regulating valve according to the thermoelectric electromotive force signal to adjust the firepower, thereby realizing detection of whether a cookware is placed on the cooker and adjusting the firepower according to whether a cookware is placed on the cooker, thereby realizing safety protection of the cooker and reducing the danger caused by dry burning.

[0040] Example 3

[0041] The utility model provides a cooking appliance, referring to Figure 4 , including an electrically controlled regulating valve 31 and a safety protection device 32 in Example 2, wherein the electrically controlled regulating valve is electrically connected to a controller in the safety protection device.

[0042] In the embodiment of the utility model, a conductive part is arranged on the foot piece. When a conductive cookware is placed on the pot support, a closed loop is formed with the controller. There are two conductors on the conductive part. When the cooker heats the cookware placed on the pot support, due to the different materials of the two conductors, a temperature difference electromotive force, i.e., a thermoelectric electromotive force, is generated when heated. The controller can output a regulating signal to the electronically controlled regulating valve according to the thermoelectric electromotive force signal to adjust the firepower, thereby realizing detection of whether a cookware is placed on the cooker and adjusting the firepower according to whether a cookware is placed on the cooker, thereby realizing safety protection of the cooker and reducing the danger caused by dry burning.

[0043] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A pot support, characterized in that: It comprises a base and at least two legs arranged on the base, wherein the at least two legs are used to support the cookware, and the tops of the at least two legs are provided with conductive parts, and the conductive parts are used to be electrically connected to an external controller; wherein at least one of the conductive parts comprises at least two conductors.

2. The pot support according to claim 1, characterized in that: An insulating layer is provided on the surface of the pot support except the conductive part.

3. The pot support according to claim 1, characterized in that: The at least two conductors are made of metals of different materials.

4. The pot support according to any one of claims 1 to 3, characterized in that: The pot support specifically comprises four legs, wherein the tops of two legs are provided with conductive parts.

5. A safety protection device for a stove, characterized in that: It comprises a controller and the pot support as claimed in claim 1; The conductive parts at the top of the at least two pins are electrically connected to the controller; The controller is used to output a first regulating signal to the electric-controlled regulating valve of the cooker when a thermoelectromotive force signal is detected, and to output a second regulating signal to the electric-controlled regulating valve when the thermoelectromotive force signal is not detected; wherein the first regulating signal is used to instruct the electric-controlled regulating valve to adjust to a first firepower, and the second regulating signal is used to instruct the electric-controlled regulating valve to adjust to a second firepower that is less than the first firepower.

6. The safety protection device according to claim 5, characterized in that: An insulating layer is provided on the surface of the pot support except the conductive part.

7. The safety protection device according to claim 5, characterized in that: The at least two conductors are made of metals of different materials.

8. The safety protection device according to claim 5, characterized in that: The conductive part is electrically connected to the controller through a wire.

9. The safety protection device according to any one of claims 5 to 8, characterized in that: The pot support specifically comprises four legs, wherein the tops of two legs are provided with conductive parts.

10. A cooking appliance, characterized in that: It comprises an electrically controlled regulating valve and a safety protection device as described in any one of claims 5 to 9, wherein the electrically controlled regulating valve is electrically connected to a controller in the safety protection device.

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