Novel inner pot heating structure

Abstract

The utility model discloses a novel inner pot heating structure which comprises an inner pot arranged in an electric cooker and a mica heating disc, the bottom face of the inner pot is concaved upwards to form a cambered surface groove, the mica heating disc comprises a base plate, a first insulation sheet, a heating assembly and a second insulation sheet, pins are arranged on the base plate in a penetrating mode, and a connecting part is arranged on the edge of the base plate. The heating assembly comprises a mica plate and an electric heating wire, the two ends of the electric heating wire are arranged in the pins respectively, and the middle of the electric heating wire is evenly distributed and wound on the mica plate. The mica heating disc is pressed and fixed through the arc-shaped groove in the bottom of the inner pot, heat is transferred to the inner pot through the mica heating disc, the bottom face of the inner pot is heated more evenly, compared with an existing heating pipe welding mode, the heating efficiency is higher, and the problem that the bottom of rice is partially brown and half-cooked is solved.

Description

Technical Field

[0001] The utility model relates to the field of electric rice cookers, in particular to a novel inner pot heating structure. Background Art

[0002] In the prior art, the heating tube used as the heat source of the rice cooker is fixed to the bottom of the inner pot by welding or other means. During use, the heat generated by the heating tube cannot be evenly transferred to the inner pot, which often causes the bottom of the rice to be partially burnt or undercooked. Utility Model Content

[0003] The purpose of this utility model is to provide a novel inner pot heating structure to solve the above problems.

[0004] According to one aspect of the present invention, a novel inner pot heating structure is provided, comprising: an inner pot arranged in an electric rice cooker and a mica heating plate, the bottom surface of the inner pot being recessed upward to form an arcuate groove, the mica heating plate comprising, from bottom to top, a chassis, a first insulating sheet, a heating component and a second insulating sheet, the chassis being provided with pins, the edge of the chassis being provided with a connecting portion, the connecting portion being fixedly connected to the arcuate groove, the first insulating sheet, the heating component and the second insulating sheet being pressed between the chassis and the arcuate groove, the heating component comprising a mica board and a heating wire, the two ends of the heating wire being respectively arranged in the pins, and the middle portion of the heating wire being evenly wound around the mica board.

[0005] In some embodiments, the connecting portion is integrally formed with the chassis, a supporting portion is provided on the edge of the chassis extending upward, a cavity is formed between the supporting portion and the chassis for accommodating the first insulating sheet, the heating component and the second insulating sheet, and the connecting portion is provided at the top of the supporting portion.

[0006] In some embodiments, the cross-section of the mica heating plate is a circular structure, and the connecting portion is a circular ring structure.

[0007] In some embodiments, the connecting portion is welded to the edge of the arc-surface groove.

[0008] In some embodiments, the connecting portion is riveted to the edge of the arc-surface groove.

[0009] In some embodiments, the first insulating sheet and the second insulating sheet are both mica sheets.

[0010] In some embodiments, both the first insulating sheet and the second insulating sheet are provided with a notch extending from the middle toward the outside.

[0011] In some embodiments, the chassis is provided with a through hole for the pins to pass through.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] This application fixes the mica heating plate by pressing it into the arc groove at the bottom of the inner pot, and transfers heat to the inner pot through the mica heating plate, so that the bottom of the inner pot is heated more evenly. Compared with the previous method of welding heating tubes, the heating efficiency is higher, and the problem of local browning and undercooking of the bottom of the rice is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the bottom structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the bottom structure of the inner pot of the present invention;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional exploded structure of the present utility model;

[0018] Figure 5 This is a schematic structural diagram of the heating component of the present invention;

[0019] Figure 6 It is a structural schematic diagram of the chassis of the present utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] refer to Figures 1 to 6 The present application provides a novel inner pot heating structure, comprising: an inner pot 1 and a mica heating plate 2 arranged in an electric rice cooker, the bottom surface of the inner pot 1 being recessed upward to form an arcuate groove 3, the mica heating plate 2 comprising, from bottom to top, a chassis 4, a first insulating sheet 5, a heating component 6 and a second insulating sheet 7, the chassis 4 being penetrated by a pin 8, a connecting portion 9 being provided at the edge of the chassis 4, the connecting portion 9 being fixedly connected to the arcuate groove 3, the first insulating sheet 5, the heating component 6 and the second insulating sheet 7 being pressed between the chassis 4 and the arcuate groove 3, the heating component 6 comprising a mica board 10 and a heating wire 11, the two ends of the heating wire 11 being respectively arranged in the pin 8, and the middle part of the heating wire 11 being evenly wound around the mica board 10.

[0022] In some embodiments, the connecting portion 9 is integrally formed with the chassis 4, and a support portion 12 is provided on the edge of the chassis extending upward. A cavity is formed between the support portion 12 and the chassis to accommodate the first insulating sheet 5, the heating component 6 and the second insulating sheet 7, and the connecting portion 9 is provided at the top of the support portion 12.

[0023] In some embodiments, the cross-section of the mica heating plate 2 is a circular structure, and the connecting portion 9 is a circular ring structure. The circular structure of the mica heating plate 2 can increase the heat conduction area and better transfer heat.

[0024] In some embodiments, the connecting portion 9 is welded to the edge of the arcuate groove 3 , and the connecting portion 9 is fixed to the edge of the arcuate groove 3 by a welding process.

[0025] In some embodiments, the connecting portion 9 is riveted to the edge of the arcuate groove 3 , and the connecting portion 9 is fixed to the edge of the arcuate groove 3 by a riveting process.

[0026] In some embodiments, the first insulating sheet 5 and the second insulating sheet 7 are both mica sheets. Mica sheets have good insulation properties and prevent the heating wire 11 from contacting the inner pot 1.

[0027] In some embodiments, the first insulating sheet 5 and the second insulating sheet 7 are both provided with a notch extending from the middle to the outside, the middle of the mica plate 10 wrapped with the heating wire 11 is a convex structure, and the first insulating sheet 5 and the second insulating sheet 7 have a notch that allows them to fit the heating component 6, ensuring that heat can be transferred to the bottom of the inner pot 1 to the greatest extent.

[0028] In some embodiments, the chassis 4 is provided with a through hole 13 for the pin 8 to pass through.

[0029] The specific fixing process of the present application is: place the cavity of the chassis 4 upward, insert the pin 8 into the through hole, and then place the first insulating sheet 5, the heating component 6 and the second insulating sheet 7 in the cavity in sequence, and then connect the heating component 6 with the pin 8. Finally, place the inner pot 1 on the chassis 4, and weld the connecting part 9 on the edge of the chassis 4 to the edge of the arc groove 3 of the inner pot 1. After welding, the first insulating sheet 5, the heating component 6 and the second insulating sheet 7 are pressed between the chassis 4 and the inner pot 1.

[0030] The present application fixes the mica heating plate 2 by pressing it into the arc groove at the bottom of the inner pot 1, and transfers heat to the inner pot 1 through the mica heating plate 2, so that the bottom surface of the inner pot 1 is heated more evenly. Compared with the previous method of welding heating tubes, the heating efficiency is higher, and the problem of local browning and undercooking of the bottom of the rice is prevented.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A new inner pot heating structure, characterized in that: include: An inner pot and a mica heating plate are arranged in the electric rice cooker, and the bottom surface of the inner pot is recessed upward to form an arc-surface groove. The mica heating plate includes a chassis, a first insulating sheet, a heating component and a second insulating sheet from bottom to top. The chassis is penetrated by pins, and a connecting portion is provided at the edge of the chassis, and the connecting portion is fixedly connected to the arc-surface groove. The first insulating sheet, the heating component and the second insulating sheet are pressed between the chassis and the arc-surface groove. The heating component includes a mica board and a heating wire, and the two ends of the heating wire are respectively arranged in the pins, and the middle part of the heating wire is evenly wound on the mica board.

2. The novel inner pot heating structure according to claim 1 is characterized in that: The connecting portion is integrally formed with the chassis, and a supporting portion is provided on the edge of the chassis extending upward. A cavity for accommodating the first insulating sheet, the heating component and the second insulating sheet is formed between the supporting portion and the chassis, and the connecting portion is provided at the top end of the supporting portion.

3. The novel inner pot heating structure according to claim 1 is characterized in that: The cross section of the mica heating plate is a circular structure, and the connecting portion is a circular ring structure.

4. The novel inner pot heating structure according to claim 1 is characterized in that: The connecting portion is welded to the edge of the arc-surface groove.

5. The novel inner pot heating structure according to claim 1 is characterized in that: The connecting portion is riveted to the edge of the arc-surface groove.

6. The novel inner pot heating structure according to claim 1 is characterized in that: The first insulating sheet and the second insulating sheet are both mica sheets.

7. The novel inner pot heating structure according to claim 6 is characterized in that: The first insulating sheet and the second insulating sheet are both provided with a notch extending from the middle toward the outside.

8. The novel inner pot heating structure according to claim 1 is characterized in that: The chassis is provided with a through hole for the pins to pass through.

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