Bowl-shaped heating body
By designing a bowl-shaped heating body, a structure connected by multiple heating rings and bent parts with gradually increasing radius is solved, and the problems of uneven heating and installation difficulty of the rice cooker heating body are achieved, achieving a more stable and uniform heating effect and cost reduction.
Patent Information
- Application Number
- CN202421818623.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing rice cooker heating body has problems such as uneven heating on one side, difficulty in winding the wire, and too low terminal temperature, which leads to high installation difficulty and high production costs.
A bowl-shaped heating body is designed, including an upper shell, a first insulator, a heat source and a chassis assembly. The heating source is composed of a plurality of heating rings and bent parts with gradually increasing radius. It is connected by the bending part. The integrated heating source does not require a support body, and is arranged closely to the bottom surface of the upper shell for uniform heating.
Improves the uniformity and stability of the heating effect, simplifies the assembly process, reduces production costs, reduces terminals, and ensures full heat transfer.
Smart Images
Figure CN223080162U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of heating elements, and particularly relates to a bowl-shaped heating element. Background Art
[0002] As an essential component of cooking appliances, the heating element mainly functions to heat up food.
[0003] The heating element in an electric rice cooker is often an electric hot plate with a heating wire as the heat source. The electric hot plate can only heat the bottom surface of the inner pot on one side, and the heating wire needs to be wound and assembled on a support. If the heating wire is too thick, it will be difficult to wind, increasing the installation difficulty; the heating wire has multiple connection terminals, and the connection terminals may have too low a temperature, resulting in uneven heat on the surface of the electric hot plate. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a bowl-shaped heating element to solve the above problems.
[0005] According to one aspect of the utility model, a bowl-shaped heating element is provided, including: a heating element main body, the heating element main body successively includes an upper shell, a first insulator, a heat source, a second insulator, and a chassis assembly from top to bottom. The upper shell has a bowl-shaped structure. The first insulator is closely arranged on the bottom surface of the upper shell. The heat source is closely arranged on the bottom surface of the first insulator. The heat source includes a plurality of heating coils with gradually increasing radii and a plurality of bending parts. Adjacent heating coils are connected by bending parts. One end of the innermost heating coil is bent and folded downward to form a first bending end. One end of the outermost heating coil is bent and folded downward to form a second bending end. The second insulator is closely arranged on the bottom surface of the heat source. The chassis assembly is closely arranged on the bottom surface of the second insulator. The first bending end and the second bending end pass through the second insulator and are connected to the chassis assembly; the width of the heating coil is N, and the distance between adjacent heating coils is 0.5N - 20N.
[0006] In some embodiments, the upper shell includes a bottom surface part and a surrounding part. The bottom surface part has a planar, raised, or concave circular structure. The edge of the bottom surface part extends upward to form a surrounding part, and the inner side of the surrounding part has an arc surface.
[0007] In some embodiments, the depth of the surrounding part is 5 - 30 mm; the included angle between the tangent of the arc surface and the horizontal plane is 20° - 60°.
[0008] In some embodiments, the top edge of the surrounding portion bends downward and extends to form a fixing groove for accommodating the flanging, and the top edge of the chassis assembly bends downward and extends to form the flanging; the first insulator, the heat source, and the second insulator are clamped between the upper shell and the chassis assembly.
[0009] In some embodiments, multiple heat conduction lines are provided on the surfaces of both the bottom surface portion and the surrounding portion.
[0010] In some embodiments, the second insulator is provided with through holes for the first bent end and the second bent end to pass through.
[0011] In some embodiments, the chassis assembly includes a base, and a first wiring hole and a second wiring hole are provided on the base. A first porcelain bead is inserted into the first wiring hole, a first insert piece is welded to the first bent end, and the first insert piece is inserted into the first porcelain bead to form a first wiring terminal; a second porcelain bead is inserted into the second wiring hole, a second insert piece is welded to the second bent end, and the second insert piece is inserted into the second porcelain bead to form a second wiring terminal.
[0012] In some embodiments, the heat source is integrally formed with a plurality of heating coils with gradually increasing radii and a plurality of the bent portions.
[0013] In some embodiments, the material of the heat source is an electrothermal alloy material.
[0014] In some embodiments, the material of the upper shell is aluminum alloy or aluminum-plated board; both the first insulator and the second insulator are mica boards.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows:
[0016] In the present application, by closely arranging the heat source on the bottom surface of the upper shell in a bowl-shaped structure, the upper shell can transfer heat to the bottom surface and the lower part of the side surface of the heated body, improving the cooking heating effect; the plurality of heating coils with gradually increasing radii provided on the bottom surface of the upper shell can make the heated body be heated more uniformly, and after the plurality of heating coils are integrally formed, they are clamped to the bottom surface of the upper shell, eliminating the need for additional support bodies, simplifying the assembly process and saving production costs; the plurality of heating coils are connected by integrally formed bent portions, and the integral heat source reduces the number of wiring terminals, making the heating effect more stable; the width of the heating coils and the distance between the heating coils are set within a proportional range, ensuring the heating effect while reducing the material cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;
[0018] Figure 2Explosion structure schematic diagram of the present utility model;
[0019] Figure 3 Cross-sectional structure schematic diagram of the present utility model;
[0020] Figure 4 is Figure 3 Enlarged view of C in;
[0021] Figure 5 Three-dimensional structure schematic diagram of the heat source of the present utility model. Specific implementation mode
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] Refer to Figures 1 to 5 , this application provides a bowl-shaped heating element, including: a heating element main body, which successively includes an upper shell 1, a first insulator 2, a heat source 3, a second insulator 4, and a chassis assembly 5 from top to bottom. The upper shell 1 has a bowl-shaped structure. The first insulator 2 is closely arranged on the bottom surface of the upper shell 1. The heat source 3 is closely arranged on the bottom surface of the first insulator 2. The heat source 3 includes a plurality of heating coils 6 with gradually increasing radii and a plurality of bending parts 7. Adjacent heating coils 6 are connected by the bending parts 7. One end of the innermost heating coil 6 is bent and folded downward to form a first bending end 8. One end of the outermost heating coil 6 is bent and folded downward to form a second bending end 9. The second insulator 4 is closely arranged on the bottom surface of the heat source 3. The chassis assembly 5 is closely arranged on the bottom surface of the second insulator 4. The first bending end 8 and the second bending end 9 pass through the second insulator 4 and are connected to the chassis assembly 5; the width of the heating coil 6 is N, and the distance between adjacent heating coils 6 is 0.5N - 20N.
[0024] The first insulator 2, the second insulator 4, and the chassis assembly 5 of this application are all bowl-shaped structures matching the upper shell 1.
[0025] In some embodiments, the upper shell 1 includes a bottom surface part 10 and a surrounding part 11. The bottom surface part 10 has a flat or raised or concave circular structure. The edge of the bottom surface part 10 extends upward to form the surrounding part 11. The inner side of the surrounding part 11 has a curved surface. The middle part of the bottom surface part 10 has a raised structure to match the bottom surface of the rice cooker inner pot, so as to better fit and conduct heat.
[0026] In some embodiments, the depth of the surrounding part 11 is 5 - 30 mm, that is, in the accompanying drawings of the specificationFigure 3 A in Figure 3 ; the angle between the tangent of the arc surface and the horizontal plane is 20° to 60°, that is, B in the accompanying drawings of the specification, and within this range, it matches the height of the heat-receiving body container, and its energy-gathering effect is the best.
[0027] In some embodiments, the top edge of the surrounding part 11 bends downward and extends to form a fixing groove 13 for accommodating the flanging 12, and the top edge of the chassis assembly 5 bends downward and extends to form a flanging 12; the first insulator 2, the heat source 3, and the second insulator 4 are clamped between the upper shell 1 and the chassis assembly 5, and a first insulating layer, the heat source 3, and a second insulating layer are clamped between the upper shell 1 and the chassis assembly 5 in sequence from top to bottom.
[0028] In some embodiments, multiple heat-conducting lines are provided on the surfaces of the bottom part 10 and the surrounding part 11, so that the heat conduction between the upper shell 1 and the heat-receiving body is more sufficient.
[0029] In some embodiments, the second insulator 4 is provided with through holes for the first bent end 8 and the second bent end 9 to pass through.
[0030] In some embodiments, the chassis assembly 5 includes a base, and a first wiring hole and a second wiring hole are provided on the base. A first porcelain bead 14 is inserted into the first wiring hole, a first insert piece 15 is welded to the first bent end 8, and the first insert piece 15 is inserted into the first porcelain bead 14 to form a first wiring terminal; a second porcelain bead 16 is inserted into the second wiring hole, a second insert piece 17 is welded to the second bent end 9, and the second insert piece 17 is inserted into the second porcelain bead 16 to form a second wiring terminal.
[0031] In some embodiments, the heat source 3 is integrally formed with a plurality of heating coils 6 with gradually increasing radii and a plurality of bending parts 7, and different powers are realized according to different cross-sections and lengths.
[0032] In some embodiments, the material of the heat source 3 is an electrothermal alloy material.
[0033] In some embodiments, the material of the upper shell 1 is aluminum alloy or aluminized plate; the first insulator 2 and the second insulator 4 are both mica plates. Aluminum alloy or aluminized plate has good heat conduction performance, and is corrosion-resistant and wear-resistant; mica plate has good insulation performance. Materials with the above characteristics can also be used as the first insulating layer and the second insulating layer in this application.
[0034] Embodiment 1: Five heating coils 6 are correspondingly clamped below the bottom part 10, and three heating coils 6 are correspondingly clamped outside the surrounding part 11. The adjacent heating coils 6 are connected through the bending part 7. The width of the heating coil 6 is N, the distance between the adjacent heating coils 6 is 2N, the diameter of the bending part 7 is 2N, the depth of the surrounding part 11 is 15 mm, and the angle between the tangent of the arc surface and the horizontal plane is 30°.
[0035] Example 2: Five heating coils 6 are correspondingly clamped below the bottom surface 10, and three heating coils 6 are correspondingly clamped outside the surrounding portion 11. The adjacent heating coils 6 are connected through a bending portion 7. The width of the heating coil 6 is N, the distance between adjacent heating coils 6 is 2.5N, the diameter of the bending portion 7 is 2.5N, the depth of the surrounding portion 11 is 20 mm, and the angle between the tangent of the arc surface and the horizontal plane is 45°.
[0036] Example 3: Five heating coils 6 are correspondingly clamped below the bottom surface 10, and three heating coils 6 are correspondingly clamped outside the surrounding portion 11. The adjacent heating coils 6 are connected through a bending portion 7. The width of the heating coil 6 is N, the distance between adjacent heating coils 6 is 5N, the diameter of the bending portion 7 is 5N, the depth of the surrounding portion 11 is 25 mm, and the angle between the tangent of the arc surface and the horizontal plane is 55°.
[0037] In this application, by closely arranging the heat source 3 on the bottom surface of the upper shell 1 in a bowl-like structure, the upper shell 1 can transfer heat to the bottom surface and the lower part of the side surface of the heated body, improving the cooking heating effect; the multiple heating coils 6 with gradually increasing radii arranged on the bottom surface of the upper shell 1 can make the heated body receive heat more evenly, and the multiple heating coils 6 are integrally formed and clamped on the bottom surface of the upper shell 1, eliminating the need for additional support bodies, simplifying the assembly process and saving production costs; the multiple heating coils 6 are connected through the integrally formed bending portion 7, and the integrated heat source 3 reduces the number of wiring terminals, making the heating effect more stable; the width of the heating coil 6 and the distance between the heating coils 6 are set within a proportional range, ensuring the heating effect while reducing material costs.
[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A bowl-shaped heating element, characterized in that, Comprising: A heating element body, which successively includes an upper shell, a first insulator, a heat source, a second insulator, and a chassis assembly from top to bottom. The upper shell has a bowl-shaped structure. The first insulator is closely arranged on the bottom surface of the upper shell. The heat source is closely arranged on the bottom surface of the first insulator. The heat source includes a plurality of heating coils with gradually increasing radii and a plurality of bending parts. Adjacent heating coils are connected by the bending parts. One end of the innermost heating coil is bent and folded downward to form a first bending end. One end of the outermost heating coil is bent and folded downward to form a second bending end. The second insulator is closely arranged on the bottom surface of the heat source. The chassis assembly is closely arranged on the bottom surface of the second insulator. The first bending end and the second bending end pass through the second insulator and are connected to the chassis assembly; The width of the heating coil is N, and the distance between adjacent heating coils is 0.5N to 20N.
2. The bowl-shaped heating element according to claim 1, wherein, The upper shell includes a bottom surface part and an enclosing part. The bottom surface part has a flat, raised or concave circular structure. An enclosing part extends upward from the edge of the bottom surface part. The inner side of the enclosing part has an arc surface.
3. The bowl-shaped heating element according to claim 2, wherein, The depth of the enclosing part is 5 to 30 mm; the included angle between the tangent of the arc surface and the horizontal plane is 20° to 60°.
4. The bowl-shaped heating element according to claim 2, wherein, The top edge of the enclosing part bends downward and extends to form a fixing groove for accommodating a flanging. The top edge of the chassis assembly bends downward and extends to have the flanging; the first insulator, the heat source, and the second insulator are clamped between the upper shell and the chassis assembly.
5. The bowl-shaped heating element according to claim 2, characterized in that, Multiple heat conduction lines are arranged on the surfaces of both the bottom surface part and the enclosing part.
6. The bowl-shaped heating element according to claim 1, wherein The second insulator is provided with through holes for the first bending end and the second bending end to pass through.
7. The bowl-shaped heating element according to claim 1, characterized in that, The chassis assembly includes a base. A first wiring hole and a second wiring hole are provided on the base. A first porcelain bead is inserted into the first wiring hole. A first insertion piece is welded to the first bending end. The first insertion piece is inserted into the first porcelain bead to form a first wiring terminal; a second porcelain bead is inserted into the second wiring hole. A second insertion piece is welded to the second bending end. The second insertion piece is inserted into the second porcelain bead to form a second wiring terminal.
8. The bowl-shaped heating element according to claim 1, wherein The heat source is integrally formed with a plurality of heating coils with gradually increasing radii and a plurality of the bending parts.
9. The bowl-shaped heating element according to claim 8, characterized in that, The material of the heat source is an electrothermal alloy material.
10. The bowl-shaped heating element according to claim 1, characterized in that, The material of the upper shell is aluminum alloy or aluminized plate; both the first insulator and the second insulator are mica plates.