CN204192398U - Electric heating structure of electric rice cooker - Google Patents

Abstract

The utility model discloses an electric heating structure of an electric rice cooker, which at least comprises a pot body; a heat conducting plate, which is an annular sheet and arranged on the bottom surface of the pot body; a top pressing plate, which is an annular sheet and arranged on the bottom surface of the heat conducting plate, and the top pressing plate has a plurality of grooves; a bottom plate, which is an annular sheet and arranged on the bottom surface of the top pressing plate, and the bottom plate has a plurality of screw holes; and an annular sleeve, which is arranged on the outer peripheral side of the pot body, the heat conducting plate, the top pressing plate and the bottom plate, and is fixed by screws penetrating the screw holes of the bottom plate, wherein the plurality of screw holes of the bottom plate are used to provide screw locking and to tighten the top pressing plate to form a support, so as to press the heat conducting plate to be closely attached to the bottom surface of the pot body, and a spacing is provided between the top surface of the bottom plate and the bottom surface of the top pressing plate.

Description

Electric heating structure of electric rice cooker

technical field

The utility model relates to an electric heating structure of an electric rice cooker, in particular to an improved design for the electric heating device structure in the electric rice cooker.

Background technique

It is well known that electric rice cookers provide people with the convenience and practicality of cooking food, and the quality of an electric rice cooker, in addition to the quality of the components themselves, how to cook food in less time and save electricity, etc. The heating efficiency is also an important part, and how to improve the heating efficiency of the electric rice cooker depends on the design of the electric heating structure in the electric rice cooker.

Please refer to Figures 7A-7B, which draw the design of the electric heating structure in the existing electric rice cooker, which mainly uses electric heating components 24 such as electric heating tubes and mica electric heating sheets that can be energized to generate high temperature, and the electric heating components 24 are The pressing plate 22 is fixed on the bottom of the pot body 20, and after the electric heating member 24 attached to the bottom of the pot body 20 is energized to generate heat, the food in the pot is indirectly heated for steaming by heat conduction.

However, the above-mentioned electric heating element 24 is fixed on the bottom of the pot body 20 by means of the pressure plate 22 and screws, but no matter how closely the electric heating element 24 is attached to the bottom of the pot body 20, theoretically, there must still be a slight gap between the two. Exist, so that can not use the maximum contact surface as the interface of heat conduction, what's more, based on cost considerations, the electric heating member 24 in the existing electric rice cooker is only fixed on the bottom of the pot body 20 with a few pressure plates 22, and each component of the electric rice cooker Due to the influence of thermal expansion and contraction, the gap between the electric heating component 24 and the pot body 20 will increase, so that the heating performance cannot reach the best state. Moreover, the existing pot body 20 is mostly fixed by direct welding screws on its bottom surface. The electric heating component 24 may be welded with a piece of iron plate/aluminum plate with screw holes, and the material of the pot body 20 changes due to high heat around the weld bead during the welding process, which is prone to rust; and in the heating process, because the above components Different materials have different expansion coefficients, and the degree of deformation of the material after heating is also different. Therefore, under the condition of long-term thermal expansion and contraction, the bottom of the pot is prone to cracking.

Utility model content

The main purpose of this utility model is to provide an electric heating structure design of an electric rice cooker that can effectively improve the heating efficiency, so that the electric heating plate assembly is completely connected to the bottom of the pot body, and the heat energy generated after electrification can be directly conducted to the pot body. Therefore, the heating performance can be brought into full play, thereby shortening the heating time and saving electric energy, so as to improve the use performance of the electric rice cooker.

The utility model discloses an electric heating structure of an electric rice cooker, which at least includes a pot body; a heat conducting plate, which is an annular sheet body and is arranged on the bottom surface of the pot body; a top pressure plate, which is an annular sheet body And it is arranged on the bottom surface of the heat conducting plate, and the top pressure plate has a plurality of channels; a bottom plate, which is an annular piece and is arranged on the bottom surface of the top pressure plate, and the bottom plate has a plurality of screw holes; and a ring sleeve piece, which The ring is arranged on the outer peripheral side of the pot body, the heat conduction plate, the top pressure plate and the bottom plate, and the screws are passed through the screw holes of the bottom plate for fixing.

Wherein, the plurality of screw holes of the bottom plate are used to provide screw locking and press the top pressure plate to form a support, so as to press the heat conduction plate close to the bottom surface of the pot body, and the top surface of the bottom plate and the top There is a distance between the bottom surfaces of the pressing plates.

Based on the above-mentioned technical characteristics, the electric heating structure of an electric rice cooker disclosed by the utility model is mainly composed of the special design of the top pressure plate and its electric heating structure. The design of the support at the center, when the bottom of the pot body is deformed due to heat, can make the heat conduction plate closely fit on the bottom surface of the pot body, and can use the largest contact surface as the interface of heat conduction, effectively solving the problems of the conventional technology; the pot body does not need to be burned Welding processing (such as direct welding screws or iron plates at the bottom of the pot, etc.), avoids the change of the material of the pot body due to the welding process, resulting in corrosion of the pot body. Or materials with different expansion coefficients are welded together, and the pot body is broken due to different thermal deformations during the heating process.

Description of drawings

Fig. 1A is the schematic diagram of the electric heating structure combination of the electric rice cooker of the present invention;

Fig. 1B is a schematic diagram of separation of the electric heating structure of the electric rice cooker of the present invention;

Fig. 2 is the sectional side view of the electric heating structure of the electric rice cooker of the present utility model;

Fig. 3 is the bottom plate view of the electric heating structure of the present utility model;

Fig. 4 is the bottom view of the bottom plate of the electric heating structure of the present utility model;

Fig. 5 is a view on the fixed plate of the electric heating structure of the present invention;

Fig. 6 is the lower view of the fixing plate of the electric heating structure of the present invention;

7A and 7B are electric heating structure diagrams of a conventional electric rice cooker.

Explanation of reference signs:

【This utility model】

10- pot body; 11- ring sleeve; 12- heat conduction plate; 13- top pressure plate; 130- connecting hole; 131- channel; 14- bottom plate; 140- connecting hole; Device; 16-temperature overload switch; 17-foot; 18-screw;

【current technology】

19-spacing; 20-pot body; 22-pressure plate; 24-electric heating components.

Detailed ways

The reference to the following drawings is only to facilitate the explanation of the basic teaching of the present utility model. The numbers, positions, relationships, and dimensions shown in the accompanying drawings are only shown as reference descriptions in the embodiments. After reading and understanding the teaching of the present utility model, they are relevant In addition, after reading and understanding the teaching of the utility model, it is also a skill in the industry to change the precise size and size ratio of specific strength, weight, strength, and similar requirements.

The same or similar components are marked with the same reference numerals in different drawings; in addition, please understand the terms such as "front", "rear", "inner", "outer", "end", "part", "section", "surrounding" , "side", etc. and similar terms are only convenient for viewers to refer to the structure in the drawings and are only used to help describe the utility model.

Please refer to Figures 1A-1B, the utility model discloses an electric heating structure of an electric rice cooker, a pot body 10, a heat conduction plate 12, a top pressure plate 13, a bottom plate 14 and a ring sleeve 11, the utility model The appearance and type of the electric rice cooker are known technologies, and are not further explained here, nor are their heating functions, control methods, etc. limited. The utility model mainly discloses its internal electric heating structure.

Please refer to FIG. 2 , which is a cross-sectional view of the electric heating structure of the present invention. The pot body 10 can be made of stainless steel and made into a circular pot shape through metal processing, but it is not limited thereto.

The heat conduction plate 12 is a plurality of thin ring-shaped sheet components, and is arranged on the bottom surface of the pot body 10. The heat conduction plate 12 can be a single component; and a temperature sensing device 15 is arranged outside the pot body 10. The temperature sensor The measuring device 15 is electrically connected with the control device (not shown) of the electric rice cooker, so as to control the heat conduction plate 12 to perform heating or heat preservation operations.

Please refer to Figure 2 and Figures 5-6 at the same time, the top pressure plate 13 is an annular piece and is arranged on the bottom surface of the heat conduction plate 12, the top pressure plate 13 has a plurality of channels 131, and the multiple channels 131 are composed of The center of the top pressure plate 13 extends radially outwards, and the position of the outward extension end is equal to or greater than the outer periphery of the heat conduction plate 12, and the heat conduction plate of this special shape design has increased its heating/cooling deformation to provide temperature When changing, it can be stably pressed against the heat conducting plate 12, so that it is close to the bottom of the pot body. Although it is shown in the drawings that the top pressure plate 13 has 8 grooves and forms an approximate angle arrangement with each other, it is only shown as a better one. The embodiment does not limit the structural type of the present invention.

Please refer to Fig. 2 and Fig. 3-4 at the same time, the bottom plate 14 is an annular sheet and is arranged on the bottom surface of the top pressure plate 13, the surface of the bottom plate 14 is provided with a plurality of screw holes 141, and the plurality of screw holes 141 The center of the bottom plate 14 is evenly arranged in a ring shape outwards, further illustrating that a plurality of tripods 17 are locked around the bottom surface of the bottom plate 14 to support the overall weight of the electric rice cooker evenly, and the ring-shaped hollow position of the bottom plate 14 can be provided with a protrusion. edge, and the protruding place also has a screw hole to lock and fix a temperature overload switch 16 on the bottom plate 14. The temperature overload switch 16 senses the temperature of the bottom surface of the pot body 10, and returns the temperature information to the control panel. The device is used to protect the pot body 10 to avoid dry burning of the bottom surface of the pot body 10 and failure of the equipment due to overheating.

To further illustrate, the bottom plate 14 and the top pressure plate 13 are provided with a plurality of connecting holes 130/140 around the annular hollow to provide flat cable holes for connecting the heat conducting plate 12 to external wires.

Please refer to Figures 1A-1B at the same time. The ring sheet 11 is a flexible sheet structure with holes on both sides, and is locked with screws and ringed on the pot body 10, heat conducting plate 12, and top pressure plate 13. It forms a seal with the outer peripheral side of the base plate 14 , and is then locked to the screw holes 141 of the base plate 14 for fixing.

As mentioned above, the electric heating structure of the electric rice cooker disclosed by the utility model mainly provides screw locking through the plurality of screw holes 141 of the bottom plate 14 and presses the top pressure plate 13 to form a support, and forces the heat conducting plate 12 is closely attached to the bottom surface of the pot body 10, and there is a distance between the top surface of the bottom plate 14 and the bottom surface of the top pressure plate 13, and because of the special shape design of the top pressure plate 13, there is a relatively high amount of heat deformation, and the screw top pressure is separately provided. The technical characteristics of multiple supports, when the bottom of the pot body 10 is deformed due to heat, the heat conduction plate 12 can be closely attached to the bottom surface of the pot body 10, and the largest contact surface can be used as the interface for heat conduction, so it can effectively solve the problem of the bottom of the pot body 10. In the case of uneven heating and long-term thermal expansion and contraction, the bottom of the pot is prone to cracking.

The specific embodiments described above are only used to illustrate the characteristics and effects of the present utility model, and are not used to limit the practical scope of the present utility model. Without departing from the spirit and technical scope disclosed in the present utility model, Any equivalent change, modification or quantity change of equivalent components accomplished by utilizing the content disclosed in the present utility model shall still be covered by the scope of rights of the present application.

Claims (4)

1. an electrothermal structure for electric cooker, is characterized in that, at least includes:

One pot of body;

One heat-conducting plate, it is a ring-type lamellar body and is located at the bottom surface of pot body;

One top pressing board, it is a ring-type lamellar body and is located at the bottom surface of this heat-conducting plate, and this top pressing board has multiple raceway groove;

One base plate, it is a ring-type lamellar body and is located at the bottom surface of this top pressing board, and this base plate has multiple screw; And

One ring set sheet, it is located on the outer circumferential side of this pot of body, this heat-conducting plate, this top pressing board and this base plate, and is fixed with this screw that screw wears this base plate;

Wherein, the plurality of screw of this base plate be screw locking is provided and this top pressing board of packing to form support, make it to be close to the bottom surface of this pot of body to push up this heat-conducting plate of pressure, and between the end face of this base plate and the bottom surface of this top pressing board, there is a spacing.

2. the electrothermal structure of electric cooker as claimed in claim 1, wherein the plurality of raceway groove is radially stretched out by the center of this top pressing board.

3. the electrothermal structure of electric cooker as claimed in claim 2, wherein folded angle is identical each other for the plurality of raceway groove.

4. the electrothermal structure of electric cooker as claimed in claim 1, wherein the plurality of screw is with the outwards evenly configuration in the form of a ring of this base plate center.