A high-temperature protection device and a gas stove

Abstract

This utility model discloses a high-temperature protection device and a gas stove. The high-temperature protection device is applied to the gas stove, which includes a glass panel, a gas stove body and burners respectively disposed on opposite sides of the glass panel. A thermocouple and a solenoid valve are disposed in the gas stove body, and the thermocouple and the solenoid valve are electrically connected. The high-temperature protection device is disposed on one side of the glass panel, on the same side as the gas stove body. A transparent area is provided on the glass panel, and the installation position of the high-temperature protection device corresponds to the transparent area. The high-temperature protection device includes a thermal fuse, which is connected in series with the thermocouple and the solenoid valve. This structure enables the thermal fuse to automatically melt and disconnect the power supply to the solenoid valve and shut off the gas supply when a pot on the stove catches fire or reaches an abnormally high temperature, effectively preventing the dangers that may result from abnormal fires or high temperatures in the gas stove.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to a high-temperature protection device and a gas stove. Background Technology

[0002] As an essential kitchen appliance, the gas stove maintains its flame by connecting a thermocouple in parallel across a solenoid valve. The flame heats the thermocouple, generating an electromotive force, which in turn induces a current in the solenoid valve, keeping it open. A high-temperature protection device is also crucial for gas stoves. Current technology typically uses a separate temperature sensor to detect the temperature and then uses a controller to prevent overheating. However, traditional gas stoves lack effective temperature sensing devices, making it impossible to detect abnormally high temperatures in a timely manner, posing safety hazards. Furthermore, the complex and costly circuit control schemes of this technology limit its widespread application in household gas stoves.

[0003] Therefore, it is particularly important to improve a simple, efficient, and low-cost high-temperature protection device that can be applied to traditional gas stoves. Utility Model Content

[0004] To solve this technical problem, the technical solution provided in this application is as follows:

[0005] On one hand, this utility model provides a high-temperature protection device applied to a gas stove. The gas stove includes a glass panel, a gas stove body and burners respectively disposed on opposite sides of the glass panel. A thermocouple and a solenoid valve are disposed in the gas stove body, and the thermocouple and the solenoid valve are electrically connected. The high-temperature protection device is disposed on one side surface of the glass panel and is disposed on the same side as the gas stove body. A transparent area is provided on the glass panel, and the installation position of the high-temperature protection device corresponds to the transparent area.

[0006] The high-temperature protection device includes a thermal fuse, which is connected in series with the thermocouple and the solenoid valve.

[0007] In some possible implementations, the high-temperature protection device further includes a thermal fuse fixing device;

[0008] The thermal fuse is detachably mounted in the thermal fuse fixing device, which is fixedly mounted on the bottom surface of the transparent area.

[0009] In some possible implementations, the thermal fuse fixing device includes a first surface; the first surface is a side surface facing the transparent area;

[0010] A first opening is provided on the first surface, and the area of ​​the first opening is less than or equal to the surface area of ​​the first surface.

[0011] In some possible implementations, the thermal fuse fixing device further includes a second surface, which is disposed opposite to the first surface;

[0012] At least one second opening is provided on the second surface; and the sum of the areas of the at least one second opening is less than the area of ​​the second surface.

[0013] In some possible implementations, the area of ​​the transparent region is greater than or equal to the area of ​​the first surface.

[0014] In some possible implementations, the melting temperature of the thermal fuse is 200°C-300°C.

[0015] In some possible implementations, the distance between the center point of the thermal fuse and the burner head is greater than the radius of the burner head.

[0016] In some possible implementations, the inner and outer surfaces of the thermal fuse fixing device are black.

[0017] In some possible implementations, the number of high-temperature protection devices is the same as the number of burners, and the high-temperature protection devices are located on the side away from the knob structure of the gas stove.

[0018] On the other hand, this application also provides a gas stove, including the aforementioned high-temperature protection device.

[0019] The above-mentioned technical solution provided in this application has the following beneficial effects:

[0020] This utility model provides a high-temperature protection device for use in gas stoves. The device is installed on one side of a glass panel, on the same side as the gas stove body. A transparent area is provided on the glass panel, and the installation position of the high-temperature protection device corresponds to this transparent area. The device includes a thermal fuse connected in series with a thermocouple and a solenoid valve. When an abnormal fire or abnormally high temperature occurs on the stove, the thermal fuse automatically melts, disconnecting the power supply to the solenoid valve and thus shutting off the gas supply. This effectively prevents the dangers caused by abnormal fires or high temperatures in the gas stove. The high-temperature protection device provided by this utility model has a simple structure, low cost, and is easy to promote and apply in household gas stoves. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the rear structure of a gas stove provided in an embodiment of this utility model.

[0023] Figure 2 This is a front structural diagram of a gas stove provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the second surface structure of a high-temperature protection device provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the first surface structure of a high-temperature protection device provided in an embodiment of the present invention;

[0026] Figure 5 This utility model provides a side view of a gas stove.

[0027] The corresponding reference numerals in the figure are:

[0028] 1-Glass panel 1; 11-Transparent area;

[0029] 2-Gas stove body; 21-Thermocouple; 22-Solenoid valve; 23-High temperature protection device; 231-Thermal fuse; 232-Thermal fuse fixing device; 2331-First surface; 2332-Second surface; 2333-First opening; 2334-Second opening;

[0030] 3-Stove head. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0033] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are included. For example, a specified range from “1 to 10” should be considered to include any and all subranges between the minimum value 1 and the maximum value 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0034] This application provides a high-temperature protection device 23, applied to a gas stove, such as... Figure 1 As shown, the gas stove includes a glass panel 1, a gas stove body 2 and burners 3 respectively disposed on opposite sides of the glass panel 1. The gas stove body 2 is provided with a thermocouple 21 and a solenoid valve 22, which are electrically connected. A high-temperature protection device 23 is disposed on one side surface of the glass panel 1 and is disposed on the same side as the gas stove body 2. A transparent area 11 is provided on the glass panel 1, and the installation position of the high-temperature protection device 23 corresponds to the transparent area 11.

[0035] The high-temperature protection device 23 includes a thermal fuse fixing device 232, which is connected in series with the thermocouple 21 and the solenoid valve 22.

[0036] In this embodiment, such as Figure 1 and Figure 5 As shown, the gas stove includes at least a glass panel 1, a gas stove body 2, and burners 3. The gas stove body 2 is the main component of the gas stove, the core of the entire gas stove, and is integrally located on the bottom surface of the glass panel 1. The gas stove body 2 includes a thermocouple 21 and a solenoid valve 22, which are electrically connected. The solenoid valve 22 is an electromagnetically controlled valve used to control the on / off of gas. The other end of the solenoid valve 22 passes through the glass panel 1 for mounting a knob structure. The thermocouple 21 detects the presence or absence of a combustion flame and generates a thermoelectric potential signal that is transmitted to the solenoid valve 22, thereby controlling the on / off of gas through the solenoid valve 22. The glass panel 1 also has a through hole for the solenoid valve to pass through the glass panel and connect to the knob structure.

[0037] In order to detect abnormally high temperatures in the gas stove and eliminate potential safety hazards, this application embodiment provides a high temperature protection device 23 installed on one side of the glass panel 1, and the high temperature protection device 23 is located on the same side as the gas stove body 2, that is, the high temperature protection device 23 is also installed on the bottom surface of the gas stove.

[0038] Specifically, a transparent area 11 is provided on the glass panel 1, and the installation position of the high temperature protection device 23 is consistent with the position of the transparent area 11. This allows the heat and temperature generated on the surface of the gas stove to be transferred to the high temperature protection device 23 through the transparent area 11.

[0039] The high-temperature protection device 23 includes a thermal fuse fixing device 232, which is an overheat protection device used to cut off the power supply or circuit when the temperature in the equipment or circuit is too high, so as to prevent safety accidents caused by overheating. The thermal fuse fixing device 232 is electrically connected to the thermocouple 21 and the solenoid valve 22 respectively. The electrical connection method is a series connection, that is, a thermal fuse fixing device 232 is connected in series in the connection line between the thermocouple 21 and the solenoid valve 22.

[0040] Optionally, the thermocouple 21 and the solenoid valve 22 can be connected in parallel.

[0041] Optionally, the transparent area 11 is located in the area of ​​the non-burner head 3 on the glass panel 1.

[0042] Optionally, the thermal fuse fixing device 232 can be a disposable thermal fuse fixing device 232 or a resettable thermal fuse fixing device 232.

[0043] Specifically, the disposable thermal fuse fixing device 232 refers to the temperature sensing element that melts or breaks due to excessive temperature when the temperature reaches the melting temperature, thereby cutting off the circuit. This melting process is irreversible; once the thermal fuse fixing device 232 melts, a new thermal fuse fixing device 232 needs to be replaced to restore the normal operation of the circuit.

[0044] Resettable thermal fuse fixing devices 232 are typically made of special materials such as positive temperature coefficient (PTC) materials or shape memory metals. These include thermal fuse fixing devices 232 made of PTC materials and thermal fuse fixing devices 232 made of shape memory metals. The working principle of the thermal fuse fixing device 232 made of PTC materials is as follows: PTC materials consist of polymers and conductive particles (such as carbon black). When the temperature rises, the polymer expands, the conductive particles separate, and the resistance increases sharply, thus cutting off the circuit. When the temperature drops, the polymer contracts, the conductive particles re-contact, the resistance returns to a lower level, and the circuit is reconnected. The working principle of the thermal fuse fixing device 232 made of shape memory metals is based on the characteristic of shape memory metals changing shape at specific temperatures. For example, when excessive current causes the temperature to rise, the shape memory metal deforms, cutting off the circuit; when the temperature drops, the shape memory metal returns to its original shape, and the circuit is reconnected.

[0045] This embodiment of the application connects a thermal fuse fixing device 232 in series in the connection line between the thermocouple 21 and the solenoid valve 22. When the pot on the gas stove catches fire or reaches an abnormally high temperature, or when the gas stove reaches a high temperature due to an abnormality, the thermal fuse fixing device 232 will automatically fuse at high temperature. The thermal fuse fixing device 232 is installed on the lower surface of the glass panel 1, and the glass panel 1 has a transparent area 11 corresponding to the installation position of the high-temperature protection device 23, which facilitates the reception of heat radiation from the stove and improves the response sensitivity of the thermal fuse fixing device 232 to abnormal high temperatures. Furthermore, this high-temperature protection device 23 has the advantages of simple structure and easy installation. By adding this device to a traditional gas stove, the safety of current household gas stoves can be improved.

[0046] As an optional implementation, the high-temperature protection device 23 further includes a thermal fuse fixing device 232 fixing device; the thermal fuse fixing device 232 is detachably disposed in the thermal fuse fixing device 232 fixing device, and the thermal fuse fixing device 232 fixing device is fixedly disposed on the bottom surface of the transparent area 11.

[0047] As an optional implementation, the thermal fuse fixing device 232 includes a first surface 2331; the first surface 2331 is a side surface facing the transparent area 11; a first opening 2333 is provided on the first surface 2331, and the area of ​​the first opening 2333 is less than or equal to the surface area of ​​the first surface 2331.

[0048] like Figure 1 and Figure 2 As shown, the high-temperature protection device 23 also includes a thermal fuse fixing device 232 fixing device, which is used to fix the thermal fuse fixing device 232 to the lower surface of the glass panel 1. The thermal fuse fixing device 232 is detachably installed in the thermal fuse fixing device 232 fixing device, which facilitates the cleaning and maintenance of the thermal fuse fixing device 232.

[0049] For example, the thermal fuse fixing device 232 is fixedly disposed on the bottom surface of the transparent area 11, such as... Figure 4 As shown, the thermal fuse fixing device 232 includes a first surface 2331, which is the surface that contacts the transparent area 11. A first opening 2333 is provided on the first surface 2331 to expose the thermal fuse fixing device 232, allowing it to directly receive heat radiation from the gas stove surface through the transparent area 11. Furthermore, the area of ​​the first opening 2333 is less than or equal to the area of ​​the first surface 2331, preferably equal to the area of ​​the first surface 2331, so that the thermal fuse fixing device 232 can be fully exposed to the transparent area 11.

[0050] Optionally, the fixing method of the thermal fuse fixing device 232 and the glass panel 1 is a fixed connection, which can be achieved by using adhesive.

[0051] Optionally, the thermal fuse fixing device 232 is also provided with an opening for the wires of the thermal fuse 231 to pass through, the specific location of which is determined according to the wiring.

[0052] As an optional implementation, the area of ​​the transparent region 11 is greater than or equal to the area of ​​the first surface 2331.

[0053] For example, in order to enable the thermal fuse fixing device 232 to better receive heat from the surface of the stove, the area of ​​the transparent region 11 is greater than or equal to the surface of the first surface 2331.

[0054] Optionally, to make the gas stove look more aesthetically pleasing, the area of ​​the transparent area 11 is preferably equal to the area of ​​the first surface 2331.

[0055] As an optional implementation, the thermal fuse fixing device 232 fixing device further includes a second surface 2332, which is disposed opposite to the first surface 2331; at least one second opening 2334 is provided on the second surface 2332; and the sum of the areas of the at least one second opening 2334 is less than the area of ​​the second surface 2332.

[0056] like Figure 3 As shown, the surface opposite to the first surface 2331 in the thermal fuse fixing device 232 is the second surface 2332. The second surface 2332 is provided with one or more second openings 2334, which are used to expose the thermal fuse fixing device 232 to the gas stove body 2. This allows the second opening 2334 to facilitate the rapid and convenient arrival of high temperature to the thermal fuse when the stove is on fire, without being blocked, thus improving the sensitivity of detecting abnormal high temperature inside.

[0057] Optionally, when the second surface 2332 has multiple second openings 2334, the opening areas of each second opening 2334 can be equal or unequal, as long as the total area of ​​the multiple second openings 2334 is less than the total area of ​​the second surface 2332.

[0058] Optionally, the shape of the second surface 2332 of the thermal fuse fixing device 232 can be as follows: Figure 3 The curved surface shown can also be a planar surface.

[0059] Optionally, the thermal fuse fixing device 232 also includes four sides located on the first surface 2331 and the second surface 2332, and one or more of the four sides are also provided with an opening structure.

[0060] As an optional implementation, the inner and outer surfaces of the thermal fuse fixing device 232 are black.

[0061] In this embodiment of the application, in order to further improve the detection sensitivity of the thermal fuse fixing device 232, both the inner and outer surfaces of the fixing device are set to black to improve the heat absorption performance.

[0062] As an optional implementation, the distance between the center point of the thermal fuse fixing device 232 and the center point of the burner head 3 is greater than the radius of the burner head 3.

[0063] like Figure 1 As shown, the thermal fuse fixing device 232 is installed on the back of the glass panel 1, as... Figure 2As shown, the burner head 3 is located on the front surface of the glass panel 1. The relative positional relationship between the thermal fuse fixing device 232 and the burner head 3 can be described as follows: the thermal fuse fixing device 232 is located on one side of the burner head 3. Therefore, the distance between the thermal fuse fixing device 232 and the center point of the burner head 3 is greater than the radius of the burner head 3.

[0064] To achieve better testing results, the thermal fuse fixing device 232 should be positioned as close to the furnace head 3 as possible. Therefore, the distance between the thermal fuse fixing device 232 and the center point of the furnace head 3 should be as small as possible.

[0065] As an optional implementation, the number of high-temperature protection devices 23 is the same as the number of burners 3, and the high-temperature protection devices 23 are located on the side away from the knob structure of the gas stove.

[0066] In this embodiment, since the high-temperature protection device 23 is connected in series in the connection circuit between the solenoid valve 22 and the thermocouple 21, a high-temperature protection device 23 must be provided between each thermocouple 21 and the solenoid valve 22. Since the gas stove includes at least one burner 3, and each burner 3 is provided with a thermocouple 21, the number of high-temperature protection devices 23 is the same as the number of burners 3.

[0067] Furthermore, for the sake of the gas stove's aesthetics, the transparent area 11 and the high-temperature protection device 23 are positioned on the side away from the knob structure of the gas stove, i.e., as shown... Figure 1 As shown, it is positioned behind the gas stove burner 3, so as not to obstruct the user's view.

[0068] The fusing temperature of the thermal fuse fixing device 232 in this embodiment can be adjusted according to the gas type of the gas stove. For example, when using a typical household gas stove, the temperature at the edge of the burner head 3 is usually between 200°C and 220°C. Therefore, the fusing temperature of the thermal fuse fixing device 232 is set to 200°C-300°C, preferably 240°C. Selecting the corresponding fusing temperature of the thermal fuse fixing device 232 according to the gas type of the gas stove further improves the sensitivity of the thermal fuse fixing device 232.

[0069] Optionally, since different types of gas will result in different combustion temperatures, thermal fuse fixing devices 232 with different temperatures can be selected according to the type of gas used in the application.

[0070] Optionally, to avoid high-temperature deformation, the material of the thermal fuse fixing device 232 should be a high-temperature resistant material, such as refractory metals like tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium, and zirconium, as well as ceramic high-temperature resistant materials, such as silicon carbide, silicon nitride, boron nitride, and boron carbide.

[0071] As an optional feature, the gas stove can also connect to the user's terminal application via wired or wireless means, and alert the user to check for any abnormalities inside the gas stove when the thermal fuse fixing device 232 blows.

[0072] The high-temperature protection device provided in this application has the following beneficial effects:

[0073] 1. When the cookware on the stove catches fire or the temperature is abnormally high, or when the gas stove is abnormally hot, the thermal fuse will automatically melt at high temperature, disconnecting the power supply to the solenoid valve and thus shutting off the gas supply, effectively preventing the dangers that may be caused by abnormal fire or high temperature of the gas stove.

[0074] 2. The thermal fuse is installed on the lower surface of the glass panel 1 by a thermal fuse fixing device. The corresponding installation position of the thermal fuse on the glass panel 1 is set to a transparent area, which can more easily receive heat radiation from the stove and improve the response sensitivity of the thermal fuse to abnormal high temperature.

[0075] 3. The inner and outer surfaces of the thermal fuse fixing device are set to black, which improves heat absorption and further enhances the detection sensitivity to abnormal high temperatures.

[0076] 4. The thermal fuse is installed behind the stove burner, which will not obstruct the user's view and is more aesthetically pleasing.

[0077] 5. The lower surface of the thermal fuse fixing device has one or more openings. If a fire breaks out inside the stove, the openings can facilitate the rapid and high-temperature response to the thermal fuse without being blocked, thus improving the sensitivity of detecting abnormal internal high temperatures.

[0078] 6. The high-temperature protection device provided by this utility model has a simple structure and low cost, and is easy to promote and apply in household gas stoves.

[0079] On the other hand, such as Figure 5 As shown in the figure, this application embodiment provides a gas stove, which includes the above-mentioned high-temperature protection device.

[0080] The above description is only an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-temperature protection device applied to a gas stove, the gas stove comprising a glass panel (1), a gas stove body (2) and a burner head (3) respectively disposed on opposite sides of the glass panel (1), wherein a thermocouple (21) and a solenoid valve (22) are disposed in the gas stove body (2), the thermocouple (21) and the solenoid valve (22) being electrically connected, characterized in that, The high temperature protection device (23) is disposed on one side surface of the glass panel (1) and on the same side as the gas stove body (2); a transparent area (11) is provided on the glass panel (1), and the installation position of the high temperature protection device (23) corresponds to the transparent area (11); The high-temperature protection device (23) includes a thermal fuse (231), which is connected in series with the thermocouple (21) and the solenoid valve (22).

2. The high-temperature protection device according to claim 1, characterized in that, The high-temperature protection device (23) also includes a thermal fuse fixing device (232); The thermal fuse (231) is detachably disposed in the thermal fuse fixing device (232), which is fixedly disposed on the bottom surface of the transparent area (11).

3. The high-temperature protection device according to claim 2, characterized in that, The thermal fuse fixing device (232) includes a first surface (2331); the first surface (2331) is a side surface facing the transparent area (11); The first surface (2331) is provided with a first opening (2333), and the area of ​​the first opening (2333) is less than or equal to the surface area of ​​the first surface (2331).

4. The high-temperature protection device according to claim 3, characterized in that, The thermal fuse fixing device (232) further includes a second surface (2332), which is disposed opposite to the first surface (2331); The second surface (2332) is provided with at least one second opening (2334); and the sum of the areas of the at least one second opening (2334) is less than the area of ​​the second surface (2332).

5. The high-temperature protection device according to claim 3, characterized in that, The area of ​​the transparent region (11) is greater than or equal to the area of ​​the first surface (2331).

6. The high-temperature protection device according to claim 2, characterized in that, The melting temperature of the thermal fuse (231) is 200℃-300℃.

7. The high-temperature protection device according to claim 2, characterized in that, The distance between the center point of the thermal fuse (231) and the center point of the furnace head (3) is greater than the radius of the furnace head (3).

8. The high-temperature protection device according to claim 2, characterized in that, The inner and outer surfaces of the thermal fuse fixing device (232) are black.

9. The high-temperature protection device according to claim 1, characterized in that, The number of the high-temperature protection devices (23) is the same as the number of the burners (3), and the high-temperature protection devices (23) are located on the side away from the knob structure of the gas stove.

10. A gas stove, characterized in that, Includes the high-temperature protection device as described in any one of claims 1-9.

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