An electric heating disc assembly structure with high heat transfer efficiency

Abstract

The utility model discloses a kind of electric heating disc assembly structure of high-efficiency heat transfer, it is related to heating device, to solve the problem of more filling fixed accessory assembly is not convenient enough, its technical scheme main point is: a kind of electric heating disc assembly structure of high-efficiency heat transfer, including pot body, and the heating module of sticking to the bottom surface of pot body, the outer layer cover is provided at the bottom of pot body, the outer layer cover cooperation bottom surface of pot body is formed with the cavity for accommodating heating module, the outer layer cover is provided with reinforcing rib, the reinforcing rib is recessed towards heating module, and heating module is pressed tightly. A kind of electric heating disc assembly structure of high-efficiency heat transfer of the utility model, heating module is fixed by reinforcing rib and is pressed tightly, with the technical effect of further reducing spare parts, reduce production cost and assembly difficulty.

Description

Technical Field

[0001] This utility model relates to heating devices, and more specifically, to an electric heating plate assembly structure for high-efficiency heat transfer. Background Technology

[0002] The heating plate is a core component of electric heating cooking appliances.

[0003] Currently, there are two main types of heating plates on the market: one is a die-cast plate, such as... Figure 8 As shown, one type is an aluminum disc with a fixing groove at the bottom, where the heating tube is clamped and fixed; another type is a brazed disc, such as... Figure 9 As shown, the bottom surface of the plate is brazed to fix an aluminum sheet, and the heating element is welded to the aluminum sheet. Both of these methods rely on the heat conduction of the aluminum plate or aluminum sheet to achieve uniform temperature, which has the problems of slow temperature conduction and long preheating time, requiring a long preheating time during cooking.

[0004] In response to the above issues, the applicant found a Chinese patent announcement with publication number CN222263065U regarding a multifunctional heating plate. Its key technical features include: a high-temperature resistant, insulated, non-magnetic furnace body; an electromagnetic generator; a heating device; a controller; a heat-insulating base; a heat-insulating cotton layer; a mica sheet layer; and a ceramic base. The heating device includes a resistive heating element and a temperature sensor. The resistive heating element, heat-insulating base, heat-insulating cotton layer, and mica sheet layer are sequentially arranged within the high-temperature resistant, insulated, non-magnetic furnace body. The ceramic base is located within the high-temperature resistant, insulated, non-magnetic furnace body. The heating terminals of the resistive heating element are placed on the ceramic base, and the temperature sensor is also located on the ceramic base.

[0005] The above technical solution effectively expands the coverage area of ​​the heat source and solves the problem of slow heat transfer efficiency; however, the above solution uses heat insulation cotton as a filler to fix the heating module, which increases the number of parts and makes assembly inconvenient; therefore, a new solution is needed to solve this problem. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an electric heating plate assembly structure with high-efficiency heat transfer. By using reinforcing ribs to press and fix the heating module, it has the technical effect of further reducing the number of parts, reducing production costs and assembly difficulty.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an electric heating plate assembly structure for high-efficiency heat transfer, including a pot body and a heating module attached to the bottom surface of the pot body. The bottom of the pot body is provided with an outer cover plate, which forms a cavity for accommodating the heating module in cooperation with the bottom surface of the pot body. The outer cover plate is provided with reinforcing ribs, which are recessed toward the heating module and press the heating module tightly.

[0008] By adopting the above technical solution, a cavity is directly formed on the bottom surface of the pot body for installing the heating module. This has the advantages of higher efficiency in direct heat transfer, fewer parts, convenient assembly, and lower production cost. The main innovation of this application is that by setting reinforcing ribs on the outer cover plate, the structural strength of the outer cover plate is improved while the concave direction of the reinforcing ribs is limited. That is, the heating module can be pressed and fixed by the reinforcing ribs, replacing the filler fixation in the cited document. This has the technical effect of further reducing parts, lowering production costs, and reducing assembly difficulty.

[0009] The present invention is further configured such that: the carrier of the heating module adopts a sandwich stacked structure, which includes a thermally conductive mica sheet that is attached to the bottom surface of the pot body, a fluffy mica sheet that is in contact with the outer cover plate, and a wound mica sheet disposed between the thermally conductive mica sheet and the fluffy mica sheet, wherein a resistance heating wire is wound on the wound mica sheet.

[0010] The present invention is further configured such that: the wound mica sheet is a single piece, the resistive heating wire is wound from one end of the wound mica sheet to the other end, and the positive and negative terminals of the resistive heating wire are located at both ends of the heating module.

[0011] The present invention is further configured such that: the winding mica sheet is formed by bringing together the first semicircular sheet and the second semicircular sheet; the resistive heating wire is wound from the near end of the first semicircular sheet to the far end, and then wound from the far end of the second semicircular sheet to the near end; the positive and negative terminals of the resistive heating wire are located at one end of the heating module.

[0012] The present invention is further configured such that: the edge of the wound mica sheet is provided with a serrated groove at the position where the resistive heating wire needs to be bent.

[0013] The present invention is further configured such that: the outer cover plate is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged radially at equal angles with the central axis of the outer cover plate as the center.

[0014] The present invention is further configured such that: the reinforcing rib is semi-conical, with one end near the center of the outer cover plate being a pointed end and the other end near the edge of the outer cover plate being a thick end, and the reinforcing rib is tightly pressed into the heating module from the pointed end to the thick end.

[0015] The present invention is further configured such that: an annular step is provided on the upper surface edge of the outer cover plate, the annular step is attached to the lower surface of the pot body and forms a cavity, and multiple screws are screwed onto the annular step at equal angles, and the screws are screwed into the pot body.

[0016] The present invention is further configured such that: the lower surface of the pot body is provided with an annular wall for forming a cavity, the outer cover plate is embedded in the annular wall, and the annular wall has an annular hook for hooking and fixing the outer cover plate.

[0017] The present invention is further configured such that a temperature controller is provided at any position on the outer cover plate.

[0018] In summary, this utility model has the following beneficial effects: By setting reinforcing ribs on the outer cover plate, the structural strength of the outer cover plate is improved, while the concave direction of the reinforcing ribs is limited. This allows the reinforcing ribs to be used to press and fix the heating module, replacing the filler material used in the referenced document. This further reduces the number of parts, lowers production costs and assembly difficulty, and also meets the lightweight design concept of small household appliances. Using a three-layer mica sheet structure as the carrier of the heating module improves the heat transfer efficiency towards the bottom of the pot and reduces heat conduction towards the outer cover plate, effectively improving the utilization rate of thermal energy while ensuring insulation safety. It meets the wiring design requirements of various small household appliance models. Multiple reinforcing ribs are arranged radially at equal angles, and the reinforcing ribs use a semi-conical structure, thereby ensuring effective pressing of the entire plane of the heating module while minimizing contact. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0020] Figure 2 This is a cross-sectional view of Embodiment 1; for ease of representation, only a portion of the relevant features are shown in the accompanying drawing.

[0021] Figure 3 This is a schematic diagram of the heating module in Example 1;

[0022] Figure 4 This is a diagram showing the winding relationship between the wound mica sheet and the resistance heating wire in Example 1.

[0023] Figure 5 This is a schematic diagram of the outer cover plate in Embodiment 1;

[0024] Figure 6 This is a diagram showing the winding relationship between the wound mica sheet and the resistance heating wire in Example 2;

[0025] Figure 7 This is a cross-sectional view of Embodiment 3; for ease of representation, only a portion of the relevant features are shown in the accompanying drawing.

[0026] Figure 8 This is a schematic diagram of the structure of a die-casting disc in the background art;

[0027] Figure 9 This is a schematic diagram of the structure of the solder pad in the background art.

[0028] Figure descriptions: 1. Pot body; 2. Outer cover plate; 3. Chamber; 4. Reinforcing rib; 4-1. Tip; 4-2. Thick end; 5. Thermally conductive mica sheet; 6. Fluffy mica sheet; 7. Winded mica sheet; 7-1. First semicircular sheet; 7-2. Second semicircular sheet; 8. Resistance heating wire; 9. Serrated groove; 10. Annular step; 11. Screw; 12. Annular wall; 13. Annular hook; 14. Thermostat. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Example 1: An assembly structure for an electric heating plate with high-efficiency heat transfer, such as... Figure 1 , Figure 2 As shown, the device includes a pot body 1 and a heating module attached to the bottom surface of the pot body 1. An outer cover plate 2 is installed at the bottom of the pot body 1. The outer cover plate 2 forms a cavity 3 for accommodating the heating module in conjunction with the bottom surface of the pot body 1. The outer cover plate 2 is provided with reinforcing ribs 4, which are recessed towards the heating module and press the heating module tightly.

[0031] This application forms a cavity 3 directly on the bottom surface of the pot body 1 for installing the heating module. It has the advantages of higher efficiency in direct heat transfer, fewer parts, convenient assembly, and lower production cost. The main innovation of this application is that by setting a reinforcing rib 4 on the outer cover plate 2, the structural strength of the outer cover plate 2 is improved, and the concave direction of the reinforcing rib 4 is limited. That is, the reinforcing rib 4 can be used to press and fix the heating module, replacing the filler fixation in the cited document. This has the technical effect of further reducing parts, reducing production costs and assembly difficulty, while also meeting the lightweight design concept of small household appliances.

[0032] The heating module's carrier adopts a sandwich stacking structure, such as... Figure 2 , Figure 3 , Figure 4 As shown, it includes a thermally conductive mica sheet 5 that is attached to the bottom surface of the pot body 1, a fluffy mica sheet 6 that is in contact with the outer cover plate 2, and a wound mica sheet 7 disposed between the thermally conductive mica sheet 5 and the fluffy mica sheet 6. The thermally conductive mica sheet 5 may be doped with alumina or magnesium oxide to improve thermal conductivity and meet insulation requirements. The density of the fluffy mica sheet 6 can be selected in the range of 150-200 kg / m³. 3While fulfilling the insulation function, the heat insulation performance between the heating module and the outer cover plate 2 is improved. The winding mica sheet 7 can be selected arbitrarily as long as it meets the strength requirements of the winding. The winding mica sheet 7 is wound with a resistance heating wire 8.

[0033] This application uses a three-layer mica sheet structure as the carrier of the heating module, which improves the heat transfer efficiency of the heating module toward the bottom surface of the pot body 1 and reduces the heat conduction toward the outer cover plate 2. Under the premise of meeting insulation safety, it effectively improves the utilization rate of thermal energy.

[0034] The wound mica sheet 7 is a single sheet, such as... Figure 4 As shown, the resistance heating wire 8 is wound from one end of the winding mica sheet 7 to the other end, and the two terminals of the resistance heating wire 8, the positive and negative terminals, are located at both ends of the heating module to meet the wiring design requirements of some household appliance models.

[0035] It should be noted that, as Figure 4 As shown, the circular periphery of the winding mica sheet 7 is provided with a serrated groove 9, which facilitates the winding of the resistive heating wire 8 one turn at a time and prevents the resistive heating wire 8 from slipping.

[0036] The concave reinforcing ribs 4 on the outer cover plate 2 serve to press and fix the heating module, and reduce the contact between the outer cover plate 2 and the heating module, further improving the heat insulation effect. To ensure the pressing effect, such as Figure 5 As shown, the outer cover plate 2 is stamped with multiple reinforcing ribs 4. The multiple reinforcing ribs 4 are arranged radially at equal angles with the central axis of the outer cover plate 2 as the center, so as to ensure effective pressing of the entire plane of the heating module while minimizing the amount of contact.

[0037] It should be noted that, as Figure 5 As shown, the reinforcing rib 4 is semi-conical in shape, with one end near the center of the outer cover plate 2 being the pointed end 4-1 and the other end near the edge of the outer cover plate 2 being the thick end 4-2. The reinforcing rib 4 is tightly pressed into the heating module from the pointed end 4-1 to the thick end 4-2, thereby achieving the technical effect that the heating module is pressed tighter the closer it is to the edge of the outer cover plate 2. This prevents the edge of the heating module from warping and reduces the heat from spreading outward.

[0038] The outer cover plate 2 is assembled to the bottom surface of the pot body 1 in the following manner, such as... Figure 2 , Figure 5 As shown, an annular step 10 is integrally formed on the upper surface edge of the outer cover plate 2. The annular step 10 fits against the lower surface of the pot body 1 and forms a cavity 3. Multiple screws 11 are screwed into the annular step 10 at equal angles. The multiple screws 11 are screwed into the pot body 1. This solution has a relatively high production cost and requires an automatic screw-tightening machine. Its advantage is that the outer cover plate 2 is detachable, which facilitates the maintenance of the heating module.

[0039] It should also be noted that, returning to Figure 1 A thermostat 14 is installed at any position on the outer cover plate 2. The thermostat 14 can be fixed by screws or welding according to design requirements. It is used to control the opening and closing of the heating module and realize over-temperature protection.

[0040] Example 2: The difference from Example 1 lies in the structure of the wound mica sheet 7, to meet the requirements of another type of wound resistive heating wire 8, such as... Figure 6 As shown, the winding mica sheet 7 is formed by bringing together the first semicircular sheet 7-1 and the second semicircular sheet 7-2. The resistance heating wire 8 is wound from the near end of the first semicircular sheet 7-1 to the far end, and then from the far end of the second semicircular sheet 7-2 to the near end. The positive and negative terminals of the resistance heating wire 8 are located at one end of the heating module, thus meeting the wiring design requirements of another small household appliance.

[0041] It should be noted that, as Figure 6 As shown, the edges of the first semicircular piece 7-1 and the second semicircular piece 7-2 are provided with serrated grooves 9 for the bending points of the resistive heating wire 8 to be embedded.

[0042] Example 3: The difference from Example 1 lies in the different assembly and fixing methods used for the pot body 1 and the outer cover plate 2, such as... Figure 7 As shown, the lower surface of the pot body 1 is integrally formed with an annular wall 12 to form a chamber 3, and the outer cover plate 2 is embedded in the annular wall 12. The annular wall 12 has an annular hook 13 for hooking and fixing the outer cover plate 2. This solution further reduces the production cost compared to the first embodiment.

[0043] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. An efficient heat transfer electric heating plate assembly structure, comprising a pot body (1) and a heating module attached to the bottom surface of the pot body (1), characterized in that: The bottom of the pot body (1) is provided with an outer cover plate (2). The outer cover plate (2) forms a cavity (3) for accommodating the heating module with the bottom surface of the pot body (1). The outer cover plate (2) is provided with reinforcing ribs (4). The reinforcing ribs (4) are recessed towards the heating module and press the heating module tightly.

2. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 1, characterized in that: The carrier of the heating module adopts a sandwich stacked structure, which includes a thermally conductive mica sheet (5) that is attached to the bottom surface of the pot body (1), a fluffy mica sheet (6) that is in contact with the outer cover plate (2), and a wound mica sheet (7) disposed between the thermally conductive mica sheet (5) and the fluffy mica sheet (6), wherein a resistance heating wire (8) is wound on the wound mica sheet (7).

3. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 2, characterized in that: The wound mica sheet (7) is a single piece, and the resistance heating wire (8) is wound from one end of the wound mica sheet (7) to the other end. The positive and negative terminals of the resistance heating wire (8) are located at both ends of the heating module.

4. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 2, characterized in that: The winding mica sheet (7) is formed by bringing together the first semicircular sheet (7-1) and the second semicircular sheet (7-2). The resistance heating wire (8) is wound from the near end of the first semicircular sheet (7-1) to the far end, and then from the far end of the second semicircular sheet (7-2) to the near end. The positive and negative terminals of the resistance heating wire (8) are located at one end of the heating module.

5. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 3 or 4, characterized in that: The edge of the wound mica sheet (7) is provided with a serrated groove (9) at the position where the resistance heating wire (8) needs to be bent.

6. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 1, characterized in that: The outer cover plate (2) is provided with multiple reinforcing ribs (4), and the multiple reinforcing ribs (4) are arranged radially at equal angles with the central axis of the outer cover plate (2) as the center.

7. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 6, characterized in that: The reinforcing rib (4) is semi-conical in shape, with one end near the center of the outer cover plate (2) being the pointed end (4-1) and the other end near the edge of the outer cover plate (2) being the thick end (4-2). The reinforcing rib (4) is tightly pressed into the heating module from the pointed end (4-1) to the thick end (4-2).

8. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 1, characterized in that: The outer cover plate (2) has an annular step (10) on the edge of its upper surface. The annular step (10) fits against the lower surface of the pot body (1) and forms a cavity (3). The annular step (10) is screwed with multiple screws (11) at equal angles. The multiple screws (11) are screwed into the pot body (1).

9. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 1, characterized in that: The lower surface of the pot body (1) is provided with an annular wall (12) to form a chamber (3), the outer cover plate (2) is embedded in the annular wall (12), and the annular wall (12) has an annular hook (13) for hooking and fixing the outer cover plate (2).

10. The electric heating plate assembly structure for high-efficiency heat transfer according to claim 1, characterized in that: A temperature controller (14) is provided at any position on the outer cover plate (2).

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