Heating disc structure of electric kettle

Abstract

The utility model relates to a heating disc structure of an electric kettle, which comprises a kettle body and a heating disc which are all made of glass, the heating disc is composed of an aluminum heat conduction disc and a horseshoe-shaped heating tube, and the heating tube is brazed on the bottom surface of the aluminum heat conduction disc. The whole top surface of the aluminum heat conduction disc is flatly arranged, and the top surface is attached to the outer bottom surface of the kettle body; according to the electric kettle, the heating disc is composed of the single-layer high-heat-conduction metal plate, the cost of raw materials is reduced, the brazing procedure of the double-layer structure of the heating disc can be omitted, and the machining cost is reduced to the maximum extent.

Description

Technical Field

[0001] This utility model relates to the field of electric kettles, specifically a heating plate structure for an electric kettle. Background Technology

[0002] To improve food safety, electric kettles are currently made entirely of glass. A heating element on the bottom of the glass kettle heats the water inside. However, during the manufacturing process, it's difficult to ensure a 100% flat surface between the bottom of the glass kettle and the contact surface (top) of the heating element. This results in gaps between the heating element and the bottom of the glass kettle, affecting heat transfer efficiency and reducing the heating speed. Therefore, some electric kettles undergo a process where the bottom of the glass kettle is ground flat during manufacturing. On the other hand, the top surface of the heating plate is machined flat on a lathe to ensure that the bottom surface of the glass kettle body and the top surface of the heating plate can make full contact, thus solving the above problems. However, the grinding and flattening processes greatly increase the processing cost of the heating plate. In addition, the heating plate includes a double-layer metal heat-conducting structure, with the top layer being stainless steel or other metal materials. The connection between the two metal heat-conducting structures requires a brazing process, which further increases the processing cost of the heating plate. Therefore, compared with other heating plates, it has no competitive advantage. Thus, the structure of the heating plate used in all-glass kettle bodies needs further improvement. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned existing problems and provide a simple and reasonable heating plate structure for an electric kettle.

[0004] A heating plate structure for an electric kettle includes a kettle body made entirely of glass and a heating plate. The heating plate consists of an aluminum heat-conducting plate and a horseshoe-shaped heating tube. The heating tube is brazed to the bottom surface of the aluminum heat-conducting plate. The entire top surface of the aluminum heat-conducting plate is flat and adheres to the outer bottom surface of the kettle body.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific embodiment, the top surface of the aluminum heat-conducting plate is coated with a heat-conducting medium at least at the joint area between it and the bottom surface of the pot body.

[0007] As a further solution, the outer bottom surface of the kettle body is also provided with a shielding layer for obscuring or blurring the top surface of the aluminum heat-conducting plate.

[0008] As a further solution, a bottom shell is also included, which is fastened to the bottom of the kettle body. The bottom surface of the aluminum heat-conducting plate is provided with a coupler that is electrically connected to the heating element, and the center of the bottom shell is provided with an avoidance opening corresponding to the coupler.

[0009] As a further solution, the bottom shell is provided with several sets of elastic clamping structures, and the aluminum heat-conducting plate is elastically and tightly attached to the bottom surface of the kettle body through the elastic clamping structures.

[0010] As a further solution, the bottom of the kettle body is provided with a limiting ring groove, and a ring hoop is connected in the limiting ring groove. The ring hoop is provided with a connecting structure extending to the bottom shell. Through the cooperation between the bottom shell and the connecting structure, the bottom shell is tightly assembled to the bottom of the kettle body.

[0011] As a further embodiment, the elastic clamping structure includes a mounting sleeve fixed to the bottom surface of the inner shell, a positioning block tightly fitted inside the mounting sleeve, and a spring. One end of the spring is positioned and connected to the positioning block, and the other end abuts against the bottom surface of the aluminum heat-conducting plate and remains in a compressed state.

[0012] As a further solution, the edge of the aluminum heat-conducting plate is provided with a clearance structure that cooperates with the connecting structure, and a foolproof structure is also provided between the aluminum heat-conducting plate and the ring hoop.

[0013] As a further embodiment, the bottom surface of the aluminum heat-conducting plate is connected with several internally threaded connecting posts for installing couplers within the area enclosed by the heating tube.

[0014] As a further embodiment, the aluminum heat-conducting plate is provided with a clearance hole, which is located between the two ends of the heating tube.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model discloses a heating plate structure for an electric kettle. The heating plate of this electric kettle is composed of a single layer of high thermal conductivity metal plate, which can reduce the cost of raw materials and eliminate the brazing process required for a double-layer heating plate structure. When the heating plate is installed on the glass kettle body, a heat-conducting medium is used to fill the gap between the aluminum heat-conducting plate and the bottom surface of the kettle body, eliminating the need for grinding the top surface of the heating plate and the bottom surface of the glass kettle body, thus greatly reducing processing costs. Attached Figure Description

[0017] Figure 1 This is a schematic cross-sectional view of the electric kettle in this utility model.

[0018] Figure 2 This is a schematic diagram of the heating plate structure in this utility model.

[0019] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is an exploded view of the electric kettle of this utility model.

[0021] Figure 5 This is a structural diagram of the electric kettle of this utility model from another angle.

[0022] Figure 6 This is a schematic diagram of the elastic clamping structure of this utility model.

[0023] Figure 7 This is a schematic diagram of the ring hoop structure of this utility model.

[0024] Figure 8 This is a schematic diagram of the internal threaded connecting column connection structure in this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] See Figures 1 to 8 As shown, a heating plate structure for an electric kettle includes a kettle body 4 made entirely of glass and a heating plate H. The heating plate consists of an aluminum heat-conducting plate 1 and a horseshoe-shaped heating tube 2. The heating tube 2 is brazed to the bottom surface of the aluminum heat-conducting plate 1. The entire top surface of the aluminum heat-conducting plate 1 is flat and is attached to the outer bottom surface of the kettle body 4.

[0027] The electric kettle uses a heating plate B with this structure, which is composed of a single layer of high thermal conductivity metal plate. This reduces the cost of raw materials and eliminates the need for the brazing process required for a double-layer heating plate, greatly reducing processing costs.

[0028] The top surface of the aluminum heat-conducting plate 1 is coated with a heat-conducting medium 6 at least at the joint area between it and the bottom surface of the pot body 4. The heat-conducting medium 6 is mainly heat-conducting silicone grease.

[0029] The all-glass kettle body 4 can improve the food safety level of electric kettles; when the heating plate is installed on the glass kettle body 4, the heat-conducting medium 6 is used to fill the gap between the aluminum heat-conducting plate 1 and the bottom surface of the kettle body 4, so that the top surface of the aluminum heat-conducting plate 1 does not need to be 100% flat, eliminating the need for the flattening process of the top surface of the heating plate and the grinding process of the bottom surface of the glass kettle body 4, which greatly reduces the processing cost.

[0030] The bottom surface of the kettle body 4 is also provided with a shielding layer 8 for shielding or obscuring the top surface of the aluminum heat-conducting plate; this structure mainly shields the top surface of the aluminum heat-conducting plate 1, which is coated with heat-conducting medium 6, so that the kettle body 4 can maintain its appearance.

[0031] The shielding layer 8 can be formed by sandblasting or grinding the outer bottom surface of the pot body 4, or the shielding layer 8 can be a chemical coating, a nano coating, or a thin film coating.

[0032] It also includes a bottom shell 5 that is fastened to the bottom of the kettle body. The bottom surface of the aluminum heat conduction plate 1 is provided with a coupler 7 that is electrically connected to the heating tube 2. The center of the bottom shell 5 is provided with an avoidance opening 501 corresponding to the coupler 7. In this embodiment, the coupler 7 is equipped with a temperature sensing structure and an anti-dry burning structure. The coupler 7 is in close contact with the aluminum heat conduction plate 1, thereby playing a temperature control role.

[0033] In this embodiment, the coupler 7 has a first connection through hole 701 corresponding to the internal threaded connecting post 3. By passing a fastening unit such as a screw through the first connection through hole 701 and the internal threaded connecting post 3, the coupler 7 can be fixed to the bottom surface of the aluminum heat-conducting plate 1.

[0034] Meanwhile, the coupler 7 is also provided with a number of internal thread through holes 702. The bottom wall of the bottom shell 5 is provided with a second connection through hole 502 corresponding to the internal thread through hole 702. By passing through the second connection through hole 502 and the internal thread through hole 702 with fastening units such as screws, the bottom shell 5 and the coupler 7 are also fastened together.

[0035] The bottom shell 5 is provided with several sets of elastic clamping structures, and the aluminum heat-conducting plate is elastically and tightly attached to the bottom surface of the kettle body through the elastic clamping structures.

[0036] The bottom of the kettle body is provided with a limiting ring groove 401, and a ring hoop 11 is connected inside the limiting ring groove 401. The ring hoop 11 is provided with a connecting structure extending to the bottom shell 5. Through the cooperation between the bottom shell 5 and the connecting structure, the bottom shell 5 is tightly assembled to the bottom of the kettle body 4.

[0037] The ring 11 includes an open hoop body 12, bolts, and an elastic screw hole seat 13 provided in the opening of the hoop body 12. The two ends of the hoop body 12 are provided with a third connecting through hole 121 facing each other. The left and right sides of the elastic screw hole seat 13 are provided with threaded holes 131 corresponding to the third connecting through hole 121. After the bolts pass through the third connecting through hole 121 and the threaded hole 131 at both ends of the hoop body 12, the ring 11 is fixed in the limiting ring groove 401.

[0038] The elastic screw hole seat 13 is mainly made of rubber or silicone. The two ends of the hoop 12 are connected through the elastic screw hole seat 13, so that the rigid hoop 12 can elastically tighten the pot body 4, avoiding the hoop 12 from breaking the glass pot body 4 due to excessive tightening of the bolt.

[0039] Furthermore, elastic pads 132 extend from the left and right sides of the elastic screw hole seat 13. The elastic pads 132 are placed between the hoop 12 and the pot body 4. When the bolt is tightened, the hoop 12 near the end is subjected to a large inward force. Therefore, the elastic pads 132 protect the pot body 4.

[0040] The connection structure includes a plurality of connecting protrusions 122 integrally set on the hoop 12. The bottom wall of the bottom shell 5 has a fourth connecting through hole 504 corresponding to the inner connecting protrusions 122. Fastening units such as screws pass through the fourth connecting through hole 504 and the connecting protrusions 122 to form a fast connection between the bottom shell 5 and the hoop 11.

[0041] The elastic clamping structure includes a mounting sleeve 503 fixed to the bottom surface of the inner shell 5, a positioning block 9 tightly fitted inside the mounting sleeve 503, and a spring 10. One end of the spring 10 is positioned and connected to the positioning block 9, and the other end abuts against the bottom surface of the aluminum heat-conducting plate 1 and remains in a compressed state. The spring 10 can further improve the clamping effect of the aluminum heat-conducting plate 1, minimize gaps to the maximum extent, and avoid the pot body 4 being cracked or crushed by using a hard clamping method.

[0042] In addition, the main body of the positioning block 9 is provided with several longitudinal first interference ribs 901 in the circumferential direction. The first interference ribs 901 enable the positioning block 9 to form an interference fit with the mounting sleeve 503. The top surface of the main body is also provided with a positioning protrusion 91. The positioning protrusion 91 is provided with several longitudinal second interference ribs 902 in the circumferential direction. The second interference ribs 902 enable one end of the spring 10 to be interference-fitted onto the positioning protrusion 91.

[0043] The aluminum heat-conducting plate 1 has a circumferential clearance structure that cooperates with the connecting structure, and an anti-foolproof structure is also provided between the aluminum heat-conducting plate 1 and the ring hoop 11; when the heating plate is assembled into the kettle body, the anti-foolproof structure can play a positioning and anti-foolproof role, improving assembly efficiency.

[0044] The aluminum heat-conducting plate 1 has a clearance structure including a first anti-mistake groove 103 corresponding to the number of connecting protrusions 122 and forming an anti-mistake fit. The first anti-mistake groove 103 is adapted to the surface shape of the connecting protrusions 122. The anti-mistake structure includes a second anti-mistake groove 104 opened on the edge of the aluminum heat-conducting plate 1. The hoop 12 has corresponding anti-mistake protrusions 123 that form an anti-mistake fit with the second anti-mistake groove 104. Through the cooperation of each anti-mistake structure, the heating plate can be installed on the kettle body 4 at a specified placement angle.

[0045] The bottom surface of the aluminum heat-conducting plate 1 is connected with several internally threaded connecting posts 3 for installing the coupler 7 within the area enclosed by the heating tube 2; three of them are arranged at equal angles, and the coupler 7 can be fastened to the bottom surface of the aluminum heat-conducting plate 1 through the internally threaded connecting posts 3.

[0046] The specific installation method of the internal threaded connecting column 3 is as follows: each internal threaded connecting column 3 is provided with a rivet joint 31 at its top end, and the aluminum heat-conducting plate 1 is provided with a number of rivet joints 31 corresponding to the number of rivet joints 31. After the rivet joints 31 are inserted through the rivet joints 102, they are riveted to fix the internal threaded connecting column 3 to the bottom surface of the aluminum heat-conducting plate 1. The shapes of the rivet joints 31 and the rivet joints 102 are preferably circular or hexagonal.

[0047] In the best case, the top surface of the rivet 31 is flush with the top surface of the aluminum heat-conducting plate 1, keeping the top surface of the aluminum heat-conducting plate 1 flat. After the heating plate is installed, the rivet 31 will not press against the bottom of the pot body 4. However, in other cases, the top surface of the rivet 31 and the top surface of the aluminum heat-conducting plate 1 transition smoothly, and at least the protrusion cannot be felt by hand.

[0048] The aluminum heat-conducting plate 1 has a clearance hole 101, which is located between the two ends of the heating tube 2. This allows the temperature sensor to protrude through the clearance hole 101 onto the upper side of the aluminum heat-conducting plate and directly contact the bottom surface of the kettle.

[0049] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A heating element structure for an electric kettle, comprising a kettle body made entirely of glass and a heating element, characterized in that: The heating plate consists of an aluminum heat-conducting plate and a horseshoe-shaped heating tube. The heating tube is brazed to the bottom surface of the aluminum heat-conducting plate. The entire top surface of the aluminum heat-conducting plate is flat and fits against the outer bottom surface of the kettle body.

2. The heating plate structure of an electric kettle according to claim 1, characterized in that: The top surface of the aluminum heat-conducting plate is coated with a heat-conducting medium at least at the joint area between it and the bottom surface of the pot.

3. The heating plate structure of an electric kettle according to claim 1, characterized in that: The bottom surface of the kettle body is also provided with a shielding layer for obscuring or blurring the top surface of the aluminum heat-conducting plate.

4. The heating plate structure of an electric kettle according to claim 1, characterized in that: It also includes a bottom shell that is fastened to the bottom of the kettle body. The bottom surface of the aluminum heat-conducting plate is provided with a coupler that is electrically connected to the heating tube. The center of the bottom shell is provided with an avoidance opening corresponding to the coupler.

5. The heating plate structure of an electric kettle according to claim 4, characterized in that: The bottom shell is provided with several sets of elastic clamping structures, and the aluminum heat-conducting plate is elastically and tightly attached to the bottom surface of the kettle body through the elastic clamping structures.

6. The heating plate structure of an electric kettle according to claim 4, characterized in that: The bottom of the kettle body is provided with a limiting ring groove, and a ring hoop is connected inside the limiting ring groove. The ring hoop is provided with a connecting structure extending to the bottom shell. Through the cooperation between the bottom shell and the connecting structure, the bottom shell is tightly assembled to the bottom of the kettle body.

7. The heating plate structure of an electric kettle according to claim 5, characterized in that: The elastic clamping structure includes a mounting sleeve fixed to the bottom surface of the bottom shell, a positioning block tightly fitted inside the mounting sleeve, and a spring. One end of the spring is positioned and connected to the positioning block, and the other end abuts against the bottom surface of the aluminum heat-conducting plate and remains in a compressed state.

8. The heating plate structure of an electric kettle according to claim 6, characterized in that: The aluminum heat-conducting plate has a circumferential clearance structure that mates with the connecting structure, and a foolproof structure is also provided between the aluminum heat-conducting plate and the ring.

9. The heating plate structure of an electric kettle according to claim 1, characterized in that: The bottom surface of the aluminum heat-conducting plate is connected with several internally threaded connecting posts for installing couplers within the area enclosed by the heating tube.

10. The heating plate structure of an electric kettle according to claim 1, characterized in that: The aluminum heat-conducting plate has a clearance hole located between the two ends of the heating element.

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