Electric heating device and cooking utensil

Abstract

The electric heating device comprises a heating element, a mounting seat, a temperature limiter and a first heat insulation part, a mounting position is arranged in the middle of the heating element, the mounting seat is arranged at the mounting position and provided with a mounting inner cavity, an upper cover body covers the upper side of the mounting seat, and the temperature limiter is fixedly connected to the upper cover body or the mounting seat; the upper cover body is provided with an avoiding hole corresponding to the temperature limiter, the temperature limiter is partially located in the installation inner cavity and partially extends to the upper portion of the upper cover body through the avoiding hole, and the first heat insulation part is arranged at the installation position and located between the heating element and the upper cover body and can shield the part, extending to the upper portion of the upper cover body, of the temperature limiter in the horizontal direction. Through the above structure, the accuracy of temperature detection can be improved, the normal work of the temperature limiter can be ensured, the reliable temperature control effect can be realized, and the use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an electric heating device and a cooking utensil. Background Art

[0002] Some existing cooking utensils, such as electric frying pans and electric frying pans, are usually equipped with a thermostat to control the temperature. Specifically, an electric heating device is arranged in the casing of the cooking utensil, and the electric heating device usually includes a disc-shaped heating element, a mounting position is arranged at the center of the disc-shaped heating element, a cover is arranged in the mounting position, the thermostat is located in the mounting position and is covered and shielded by the cover, the thermostat is electrically connected to the heating element, and when in use, the thermostat is used to detect the temperature of the cooking cavity of the cooking utensil, and when the thermostat detects that the temperature reaches a preset safety threshold, it will cut off the power supply of the heating element to prevent the cooking utensil from overheating and causing a fire. However, for such an electric heating device, due to the shielding of the cover, there may be a difference between the temperature detected by the thermostat and the actual temperature of the cooking cavity, which will affect the accuracy of the temperature detection; on the other hand, if the cover is removed, the temperature of the surrounding heating elements may also interfere with the temperature detection of the thermostat, affecting the normal operation of the thermostat. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an electric heating device, wherein a temperature limiter can extend above the upper cover body to perform temperature detection, which is conducive to improving the accuracy of temperature detection, and can reduce the interference of the heating element on the temperature limiter through the first thermal insulation member, which is conducive to ensuring the normal operation of the temperature limiter.

[0004] The invention also provides a cooking utensil having the electric heating device.

[0005] According to the first aspect of the present invention, the electric heating device described in the embodiment includes a heating element, a mounting seat, a temperature limiter and a first thermal insulation member, a mounting position is provided in the middle of the heating element, the mounting seat is arranged at the mounting position and has a mounting inner cavity, the upper side cover of the mounting seat is provided with an upper cover body, the temperature limiter is fixedly connected to the upper cover body or the mounting seat, the upper cover body is provided with a avoidance hole corresponding to the temperature limiter, the temperature limiter is partially located in the mounting inner cavity and partially extends to the top of the upper cover body through the avoidance hole, the first thermal insulation member is arranged at the mounting position and between the heating element and the upper cover body, and can horizontally block the part of the temperature limiter extending above the upper cover body.

[0006] The electric heating device according to the embodiment of the present invention has at least the following beneficial effects: when in use, the temperature limiter is electrically connected to the heating element, and the part of the temperature limiter used for detecting the temperature extends to the top of the upper cover body through the avoidance hole to detect the cooking cavity temperature of the cooking utensil; by extending the temperature measuring end of the temperature limiter to the top of the upper cover body, the difference between the temperature detected by the temperature limiter and the actual temperature of the cooking cavity can be reduced, which is beneficial to improving the accuracy of temperature detection; and the first thermal insulation member is located between the heating element and the upper cover body, and the first thermal insulation member is used to shield the extended part of the temperature limiter in the horizontal direction, which can reduce the interference of the heating element on the temperature limiter, which is beneficial to ensuring the normal operation of the temperature limiter.

[0007] According to some embodiments of the present invention, the first thermal insulation member is in a cylindrical structure and is disposed around the outer circumference of the upper cover body, and the upper side of the first thermal insulation member is higher than the upper end surface of the upper cover body.

[0008] According to some embodiments of the present invention, the inner cylinder wall of the first thermal insulation component is provided with a thermal insulation material layer.

[0009] According to some embodiments of the present invention, there is a gap between the inner cylinder wall of the first thermal insulation component and the outer peripheral wall of the upper cover body.

[0010] According to some embodiments of the present invention, a fixing bracket is provided on the outer peripheral side of the mounting seat, the fixing bracket is connected to the heating element and is used to support the heating element, and a plug-in groove is provided on the lower side of the first thermal insulation member, and the first thermal insulation member is plug-fitted with the fixing bracket through the plug-in groove.

[0011] According to some embodiments of the present invention, three fixing brackets are provided and arranged around the outer circumference of the mounting seat, and three plug-in slots are provided corresponding to the fixing brackets.

[0012] According to some embodiments of the present invention, the side wall of the mounting seat is provided with a plug hole, and the fixing bracket is correspondingly provided with a plug pin that cooperates with the plug hole. The fixing bracket is fixedly connected to the outer peripheral side of the mounting seat through the plug-in cooperation between the plug pin and the plug hole.

[0013] According to some embodiments of the present invention, the electric heating device further comprises a second thermal insulation member, which is disposed on the upper side of the upper cover body, and which is in a cylindrical structure and is disposed around the outer periphery of the extended portion of the temperature limiter.

[0014] According to some embodiments of the present invention, there is a gap between the inner cylinder wall of the second thermal insulation member and the outer peripheral wall of the extended portion of the temperature limiter.

[0015] The cooking appliance according to the second embodiment of the present invention comprises the electric heating device according to the first embodiment of the present invention.

[0016] The cooking utensil according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned electric heating device, its temperature limiter can be extended to the top of the upper cover body for temperature detection and the interference of the heating element on the temperature limiter can be reduced by the first thermal insulation member, which is beneficial to improving the accuracy of temperature detection and ensuring the normal operation of the temperature limiter, achieving a more reliable temperature control effect, and facilitating use.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of an electric heating device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the Zhongdian heating device from another perspective;

[0021] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the Zhongdian heating device;

[0022] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of a Chinese electric heating device;

[0023] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0024] Reference numerals:

[0025] Heating element 110, mounting position 111, temperature limiter 120;

[0026] The mounting seat 210, the mounting inner cavity 211, the plug hole 212, the upper cover 220, the avoidance hole 221, the fixing bracket 230, and the plug pin 231;

[0027] A first heat insulating member 310 , a plug-in slot 311 , and a second heat insulating member 320 . DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it is necessary to understand that if it involves orientation description, the orientation or position relationship indicated by, for example, up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, if the words such as several, greater than, less than, exceed, above, below, within, etc. appear, among which, several means one or more, more means more than two, greater than, less than, exceed, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself.

[0031] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 5 An electric heating device comprises a heating element 110, a mounting seat 210, a temperature limiter 120 and a first thermal insulation member 310, a mounting position 111 is provided in the middle of the heating element 110, the mounting seat 210 is arranged at the mounting position 111 and has a mounting inner cavity 211, an upper cover 220 is provided on the upper side cover of the mounting seat 210, the temperature limiter 120 is fixedly connected to the upper cover 220 or the mounting seat 210, and the upper cover 220 is provided with an avoidance hole 221 corresponding to the temperature limiter 120, a part of the temperature limiter 120 is located in the mounting inner cavity 211 and a part thereof extends to the top of the upper cover 220 through the avoidance hole 221, the first thermal insulation member 310 is arranged at the mounting position 111 and is located between the heating element 110 and the upper cover 220, and can horizontally block the part of the temperature limiter 120 extending to the top of the upper cover 220.

[0034] It is understandable that if Figure 1 , Figure 3 and Figure 4As shown, the heating element 110 is in a coil structure, with a mounting position 111 provided at its center, the mounting seat 210, the upper cover 220, the temperature limiter 120 and the first thermal insulation member 310 are all located in the mounting position 111, the upper cover 220 is covered on the upper side of the mounting seat 210, the temperature limiter 120 is fixedly connected to the upper cover 220, the lower portion of which is located in the mounting inner cavity 211, and the upper portion is a temperature measuring end for detecting the temperature and extends to the top of the upper cover 220 through the avoidance hole 221, and the first thermal insulation member 310 is located between the heating element 110 and the upper cover 220, and can horizontally block the portion of the temperature limiter 120 extending above the upper cover 220. When in use, the temperature limiter 120 is electrically connected to the heating element 110, and the temperature measuring end of the temperature limiter 120 extends to the top of the upper cover 220 through the avoidance hole 221 to detect the cooking cavity temperature of the cooking utensil. Since the temperature measuring end of the temperature limiter 120 is exposed to the top of the upper cover 220, the difference between the temperature detected by the temperature limiter 120 and the actual temperature of the cooking cavity can be reduced, which is beneficial to improving the accuracy of temperature detection. In addition, by shielding the extended part of the temperature limiter 120 in the horizontal direction through the first thermal insulation component 310, the interference of the heating element 110 on the temperature limiter 120 can be reduced, which is beneficial to ensure the normal operation of the temperature limiter 120 and achieve a more reliable temperature control effect.

[0035] In actual application, the temperature limiter 120 can also be fixedly connected to the mounting base 210. The specific structure of the mounting base 210, the first thermal insulation member 310 and other components can be set accordingly according to actual use needs. A detailed description is not given here and a specific explanation is given below.

[0036] In some embodiments, the first thermal insulation member 310 is in a cylindrical structure and is disposed around the outer circumference of the upper cover body 220 , and the upper side of the first thermal insulation member 310 is higher than the upper end surface of the upper cover body 220 .

[0037] It is understandable that if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first heat insulating member 310 is a cylindrical structure, which is through from top to bottom. The first heat insulating member 310 is arranged around the outer periphery of the upper cover 220 and its upper side is higher than the upper end surface of the upper cover 220, so as to better shield the extended part of the temperature limiter 120 in the horizontal direction, reduce the heat transfer of the heating element 110 to the extended part of the temperature limiter 120, and achieve a better anti-interference effect. In actual application, the specific structure of the first heat insulating member 310 can also be set accordingly according to actual use needs.

[0038] Furthermore, the inner wall of the first thermal insulation member 310 is provided with a thermal insulation material layer (not shown in the figure). It is understandable that by providing the thermal insulation material layer, the inner wall of the first thermal insulation member 310 can achieve a better thermal insulation effect, further reducing the interference of the heating element 110 on the temperature limiter 120. In practical application, in addition to providing the thermal insulation material layer, a reflective layer can also be provided on the outer wall of the first thermal insulation member 310 to reduce the interference of the heating element 110 on the temperature limiter 120 by reflecting thermal radiation, which can be set accordingly according to actual use needs.

[0039] Furthermore, there is a gap between the inner wall of the first heat insulating member 310 and the outer wall of the upper cover 220. Figure 4 and Figure 5 As shown, since there is a gap between the inner wall of the first heat insulating member 310 and the outer wall of the upper cover 220, the first heat insulating member 310 and the upper cover 220 are not in contact with each other, which is conducive to reducing the heat transfer between the two, thereby reducing the interference with the temperature limiter 120, and facilitating use. In actual application, a heat insulating material can also be arranged between the inner wall of the first heat insulating member 310 and the outer wall of the upper cover 220, and the specific gap size between the inner wall of the first heat insulating member 310 and the outer wall of the upper cover 220 can be set accordingly according to actual use needs.

[0040] In some embodiments, a fixing bracket 230 is provided on the outer peripheral side of the mounting base 210, the fixing bracket 230 is connected to the heating element 110 and is used to support the heating element 110, and a plug-in groove 311 is provided on the lower side of the first thermal insulation member 310, and the first thermal insulation member 310 is plug-fitted with the fixing bracket 230 through the plug-in groove 311.

[0041] It is understandable that if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the fixing bracket 230 is a sheet-like structure, which is fixedly connected to the outer peripheral side of the mounting seat 210, and is used to connect with the heating element 110 and support the coil part of the heating element 110. The lower side of the first thermal insulation member 310 is provided with a plug-in groove 311, and the first thermal insulation member 310 is installed through the plug-in fit between the plug-in groove 311 and the fixing bracket 230. The structure is simple and convenient for the assembly and disassembly of the first thermal insulation member 310. In actual application, in addition to the above structure, the first thermal insulation member 310 can also be installed and connected with the fixing bracket 230 or the mounting seat 210 through a threaded structure, which can be changed accordingly according to actual use needs.

[0042] In some embodiments, three fixing brackets 230 are provided and arranged around the outer periphery of the mounting base 210, and the plug-in slots 311 are provided at three corresponding fixing brackets 230. It is understandable that, if Figure 1 , Figure 2and Figure 3 As shown, three fixing brackets 230 are evenly spaced and arranged around the outer periphery of the mounting seat 210, and three plug slots 311 are correspondingly arranged on the lower side of the first heat insulating member 310. The three plug slots 311 are respectively plugged and matched with the three fixing brackets 230. The installation position of the first heat insulating member 310 is well fixed by three-point plug-in fixing, so as to avoid horizontal movement and rotation, and improve the stability and reliability of the installation connection. In actual application, the specific number of fixing brackets 230 and plug slots 311 can also be changed according to actual use needs.

[0043] In some embodiments, the side wall of the mounting base 210 is provided with a plug hole 212, and the fixing bracket 230 is correspondingly provided with a plug pin 231 that cooperates with the plug hole 212. The fixing bracket 230 is fixedly connected to the outer peripheral side of the mounting base 210 through the plug-in cooperation between the plug pin 231 and the plug hole 212.

[0044] It is understandable that if Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the side wall of the mounting seat 210 is provided with a plug hole 212, and the side of the fixing bracket 230 close to the mounting seat 210 is correspondingly provided with a plug pin 231. When installed, the plug pin 231 is plugged and matched with the plug hole 212, so as to realize the connection and fixation between the fixing bracket 230 and the mounting seat 210. Its structure is simple, and it is convenient for the assembly and disassembly operation of the fixing bracket 230. In actual application, in addition to the above structure, the fixing bracket 230 can also be installed and connected with the mounting seat 210 through a threaded structure, or the fixing bracket 230 can be fixed to the outer peripheral side of the mounting seat 210 by welding, which can be set accordingly according to actual use needs.

[0045] In some embodiments, the electric heating device further includes a second thermal insulation member 320 , which is disposed on the upper side of the upper cover 220 . The second thermal insulation member 320 is in a cylindrical structure and is disposed around the outer periphery of the extended portion of the temperature limiter 120 .

[0046] It is understandable that if Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the second heat insulating member 320 is a cylindrical structure that penetrates from top to bottom, and is disposed on the upper side of the upper cover 220 and surrounds the outer periphery of the extended portion of the temperature limiter 120, thereby shielding the outer periphery of the extended portion of the temperature limiter 120, further reducing the transfer of heat from the heating element 110 to the extended portion of the temperature limiter 120, and improving the anti-interference effect. In actual application, the second heat insulating member 320 can be set accordingly according to actual use needs.

[0047] Furthermore, there is a gap between the inner wall of the second heat insulating member 320 and the outer wall of the extended portion of the temperature limiter 120. It is understandable that Figure 4 and Figure 5 As shown, since there is a gap between the inner wall of the second thermal insulation member 320 and the outer wall of the extended portion of the temperature limiter 120, the second thermal insulation member 320 and the extended portion of the temperature limiter 120 do not contact each other, which is conducive to reducing the heat transfer between the two, thereby reducing the interference with the temperature limiter 120, and facilitating use. In actual application, the first thermal insulation member 310 can also be referred to, and a thermal insulation material layer can be set on the inner wall of the second thermal insulation member 320. The specific gap size between the inner wall of the second thermal insulation member 320 and the outer wall of the extended portion of the temperature limiter 120 can be set accordingly according to actual use needs.

[0048] The cooking appliance according to the second embodiment of the present invention comprises the electric heating device according to the first embodiment of the present invention.

[0049] According to the cooking utensil of the embodiment of the present invention, by adopting the above-mentioned electric heating device, its temperature limiter 120 can be extended to the top of the upper cover body 220 for temperature detection and can reduce the interference of the heating element 110 on the temperature limiter 120 through the first thermal insulation member 310, which is beneficial to improve the accuracy of temperature detection and ensure the normal operation of the temperature limiter 120, thereby achieving a more reliable temperature control effect and facilitating use.

[0050] Since other components of the cooking appliance according to the embodiment of the present invention are known to those skilled in the art, they will not be described in detail here.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An electric heating device, characterized in that: include: A heating element, wherein a mounting position is provided in the middle of the heating element; A mounting seat, the mounting seat is arranged at the mounting position and has a mounting inner cavity, and the upper side cover of the mounting seat is provided with an upper cover body; A temperature limiter, the temperature limiter is fixedly connected to the upper cover body or the mounting seat, the upper cover body is provided with an avoidance hole corresponding to the temperature limiter, the temperature limiter is partially located in the mounting inner cavity and partially extends to the top of the upper cover body through the avoidance hole; A first heat insulating member is arranged at the installation position and is located between the heating element and the upper cover body, and can horizontally shield the portion of the temperature limiter that extends above the upper cover body.

2. The electric heating device according to claim 1, characterized in that: The first heat insulating member is in a cylindrical structure and is disposed around the outer circumference of the upper cover body. The upper side of the first heat insulating member is higher than the upper end surface of the upper cover body.

3. The electric heating device according to claim 2, characterized in that: The inner cylinder wall of the first thermal insulation member is provided with a thermal insulation material layer.

4. The electric heating device according to claim 2, characterized in that: There is a gap between the inner cylinder wall of the first heat insulating member and the outer peripheral wall of the upper cover body.

5. The electric heating device according to claim 2, characterized in that: A fixing bracket is provided on the outer peripheral side of the mounting seat, and the fixing bracket is connected to the heating element and used to support the heating element. A plug-in groove is provided on the lower side of the first thermal insulation member, and the first thermal insulation member is plug-fitted with the fixing bracket through the plug-in groove.

6. The electric heating device according to claim 5, characterized in that: The fixing brackets are provided in three numbers and are arranged around the outer circumference of the mounting seat, and the plug-in slots are provided in three numbers corresponding to the fixing brackets.

7. The electric heating device according to claim 5, characterized in that: The side wall of the mounting seat is provided with a plug hole, and the fixing bracket is correspondingly provided with a plug pin that matches the plug hole. The fixing bracket is fixedly connected to the outer peripheral side of the mounting seat through the plug-in match between the plug pin and the plug hole.

8. The electric heating device according to claim 1, characterized in that: It also includes a second heat insulating member, which is arranged on the upper side of the upper cover body. The second heat insulating member is in a cylindrical structure and is arranged around the outer periphery of the extended portion of the temperature limiter.

9. The electric heating device according to claim 8, characterized in that: A gap is provided between the inner cylinder wall of the second heat insulating member and the outer peripheral wall of the extended portion of the temperature limiter.

10. A cooking utensil, characterized in that: The invention comprises an electric heating device according to any one of claims 1 to 9.

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