Electric heating device

Abstract

The utility model discloses an electric heating device which comprises a fastening mechanism, a first electrode slice (1), a second electrode slice (2) and a heating element (3), the first electrode slice (1), the second electrode slice (2) and the heating element (3) are fixedly connected through the fastening mechanism, and the heating element (3) is located between the first electrode slice (1) and the second electrode slice (2). According to the device, glue is omitted among the first electrode plate, the heating element and the second electrode plate, so that the cost is reduced, and the first electrode plate, the heating element and the second electrode plate are rigidly connected, so that the heat conduction efficiency is higher.

Description

Technical Field

[0001] The utility model relates to an electric heating device, belonging to the technical field of water-heating electric heaters. Background Art

[0002] There are three main methods used in the prior art to support electric heating devices. The first method is to use glue to bond the electrode sheet, heating element and electrode sheet, and then solidify the glue through a heating process to stick the electrode sheet and heating element together. This method has disadvantages: high parts cost and low thermal conductivity. The second method in the prior art is to use an insert welding method between the electrode sheet and the welding plate; the disadvantage is that tin leakage will occur. The third method in the prior art is to use the electrode sheet, heating element, electrode sheet, bracket and wedge block to insert into the shell by interference fit, which has the following disadvantages: high requirements on part size and high part manufacturing cost. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an electric heating device. In the device, glue is eliminated between the first electrode sheet, the heating element and the second electrode sheet to reduce costs. A rigid connection is used between the first electrode sheet, the heating element and the second electrode sheet, which makes the heat conduction efficiency higher.

[0004] In a first aspect, the utility model provides an electric heating device, comprising a fastening mechanism, a first electrode sheet, a second electrode sheet and a heating element. The first electrode sheet, the second electrode sheet and the heating element are fixedly connected by the fastening mechanism, and the heating element is located between the first electrode sheet and the second electrode sheet.

[0005] Preferably, the fastening mechanism includes a first frame and a second frame, the first frame has a first stepped through hole for matching the first electrode sheet, and the second frame has a second stepped through hole for matching the second electrode sheet, and the first frame and the second frame fasten the first electrode sheet and the second electrode sheet together.

[0006] Preferably, the fastening mechanism includes several first card blocks and several second card blocks, the first card block or the second card block is fixedly provided on the first frame, and the first card block groove that matches the first card block or the second card block groove that matches the second card block is fixedly provided on the second frame, the first card block is cylindrical, and the second card block is an L-shaped bent plate; the first card block or the second card block is fixedly provided on the second frame, and the first card block groove that matches the first card block or the second card block groove that matches the second card block is fixedly provided on the first frame.

[0007] Preferably, the fastening mechanism includes a first injection-molded part and a second injection-molded part, the first injection-molded part fixes the upper end of the first electrode sheet and the upper end of the second electrode sheet, the lower end of the first injection-molded part forms a first electrode sheet groove for engaging the first electrode sheet and a second electrode sheet groove for engaging the second electrode sheet, the second injection-molded part fixes the lower end of the first electrode sheet and the lower end of the second electrode sheet, the upper end of the second injection-molded part forms a third electrode sheet groove for engaging the first electrode sheet and a fourth electrode sheet groove for engaging the second electrode sheet.

[0008] Preferably, the fastening mechanism includes a welding plate, the welding portion of the first electrode sheet is formed into a welding groove, and the welding plate is inserted into the welding groove.

[0009] Preferably, the fastening mechanism includes a bracket having a U-shaped cross section, the thickness of the upper end of the bracket being greater than the thickness of the lower end of the bracket, and the heating element, the first electrode sheet and the second electrode sheet are inserted into the bracket.

[0010] Beneficial effects achieved by the utility model:

[0011] In the first embodiment of the present device, the glue between the first electrode sheet, the heating element and the second electrode sheet is eliminated, which reduces the cost. A rigid connection is used between the first electrode sheet, the heating element and the second electrode sheet, which makes the thermal conductivity more efficient. The one-piece injection molding method of the second embodiment of the present device can save the time of parts assembly. Originally, the first electrode sheet, the heating element and the second electrode sheet needed to be assembled. In this device, the first electrode sheet, the heating element and the second electrode sheet are made into a whole, and the part size requirements are reduced. The third embodiment of the present device adopts an insert welding method between the first electrode sheet, the heating element and the second electrode sheet, which can prevent tin leakage. The fourth embodiment of the present device eliminates the wedge block, which reduces the cost of parts and reduces the assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 It is a structural diagram of Example 1 in this application;

[0014] Figure 2 This is a structural diagram of Example 2 in this application;

[0015] Figure 3 This is a structural diagram of Example 3 in this application;

[0016] Figure 4 This is a structural diagram of Example 4 in this application;

[0017] Figure 5This is a rendering of the insertion method of the angled bracket in Example 4 of this application.

[0018] Meaning of the reference numerals: 1-first electrode sheet; 2-second electrode sheet; 3-heating element; 4-first frame; 5-second frame; 6-first clamping block; 7-second clamping block; 8-first injection-molded part; 9-second injection-molded part; 10-welding plate; 11-welding groove; 12-bracket. DETAILED DESCRIPTION

[0019] To facilitate the technical solution of the application, some concepts involved in this application are first explained below.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, they are only used to explain the relative position relationship and movement status of the various components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if the descriptions of "first" and "second" are involved in this utility model, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" can explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model. Example

[0022] like Figure 1 The first embodiment of the present invention is shown in FIG. 1 , in which the first electrode sheet, the heating element, and the second electrode sheet are fixed together using a snap-fit method, thereby achieving a rigid connection between the first electrode sheet, the heating element, and the second electrode sheet. The first frame 4 is fixedly provided with a first clamping block 6 or a second clamping block 7, and the second frame 5 is fixedly provided with a first clamping block groove that matches the first clamping block 6 or a second clamping block groove that matches the second clamping block 7. The first clamping block 6 is cylindrical, and the second clamping block 7 is an L-shaped bent plate. The second frame 5 is fixedly provided with a first clamping block 6 or a second clamping block 7, and the first frame 4 is fixedly provided with a first clamping block groove that matches the first clamping block 6 or a second clamping block groove that matches the second clamping block 7.

[0023] There are many types of heating elements, first electrode sheets, and second electrode sheets available in the prior art, and those skilled in the art can select them according to actual needs, so no examples are given in this embodiment. Example

[0024] like Figure 2 As shown in the second embodiment adopted by the present invention, the first electrode sheet, the heating element and the second electrode sheet are integrally injected. The heating element, the first electrode sheet and the second electrode sheet are first bonded together, and then the heating element, the first electrode sheet and the second electrode sheet are placed in a mold for integral injection molding. The first injection-molded part 8 is fixed to the upper ends of the first electrode sheet and the second electrode sheet, and the lower end of the first injection-molded part 8 forms a first electrode sheet groove for engaging the first electrode sheet and a second electrode sheet groove for engaging the second electrode sheet. The second injection-molded part 9 is fixed to the lower ends of the first electrode sheet and the second electrode sheet, and the upper end of the second injection-molded part 9 forms a third electrode sheet groove for engaging the first electrode sheet and a fourth electrode sheet groove for engaging the second electrode sheet. Example

[0025] like Figure 3 The second embodiment of the present invention is shown, in which the welding portion of the first electrode sheet 1 is made into a welding groove 11, the shape of the welding plate 10 matches the welding groove, the welding plate 10 is placed in the welding groove 11 of the first electrode sheet 1, and then the welding plate 10 and the welding groove 11 are welded. Example

[0026] like Figure 4 and Figure 5 The third embodiment of the present invention is shown, in which an angled bracket is used instead of a wedge block, and the insertion method is changed to inserting the heating element, the first electrode sheet, and the second electrode sheet into the bracket 12.

[0027] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0028] Those skilled in the art will readily envision other embodiments of the present invention after considering the specification and practicing the invention herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not invented herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0029] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of this application in detail. It should be understood that the above are only specific implementation methods of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

Claims

1. An electric heating device, characterized in that: The device comprises a fastening mechanism, a first electrode sheet (1), a second electrode sheet (2) and a heating element (3); the first electrode sheet (1), the second electrode sheet (2) and the heating element (3) are fixedly connected by the fastening mechanism; the heating element (3) is located between the first electrode sheet (1) and the second electrode sheet (2).

2. An electric heating device according to claim 1, characterized in that: The fastening mechanism comprises a first frame (4) and a second frame (5); a first step through hole matching the first electrode sheet (1) is provided on the first frame (4); a second step through hole matching the second electrode sheet (2) is provided on the second frame (5); the first frame (4) and the second frame (5) fasten the first electrode sheet (1) and the second electrode sheet (2) together.

3. An electric heating device according to claim 2, characterized in that: The fastening mechanism comprises a plurality of first clamping blocks (6) and a plurality of second clamping blocks (7); the first clamping block (6) or the second clamping block (7) is fixedly provided on the first frame (4); and a first clamping block groove matching the first clamping block (6) or a second clamping block groove matching the second clamping block (7) is fixedly provided on the second frame (5); the first clamping block (6) is cylindrical, and the second clamping block (7) is an L-shaped bent plate; the first clamping block (6) or the second clamping block (7) is fixedly provided on the second frame (5); and a first clamping block groove matching the first clamping block (6) or a second clamping block groove matching the second clamping block (7) is fixedly provided on the first frame (4).

4. The electric heating device according to claim 1, characterized in that: The fastening mechanism comprises a first injection molded part (8) and a second injection molded part (9), wherein the first injection molded part (8) fixes the upper end of the first electrode sheet (1) and the upper end of the second electrode sheet (2), and the lower end of the first injection molded part (8) forms a first electrode sheet groove for engaging the first electrode sheet (1) and a second electrode sheet groove for engaging the second electrode sheet (2), and the second injection molded part (9) fixes the lower end of the first electrode sheet (1) and the lower end of the second electrode sheet (2), and the upper end of the second injection molded part (9) forms a third electrode sheet groove for engaging the first electrode sheet (1) and a fourth electrode sheet groove for engaging the second electrode sheet (2).

5. The electric heating device according to claim 1, characterized in that: The fastening mechanism comprises a welding plate (10), a welding portion of the first electrode sheet (1) is formed into a welding groove (11), and the welding plate (10) is inserted into the welding groove (11).

6. The electric heating device according to claim 1, characterized in that: The fastening mechanism comprises a bracket (12), the bracket (12) has a U-shaped cross section, the thickness of the upper end of the bracket (12) is greater than the thickness of the lower end of the bracket (12), and the heating element, the first electrode sheet (1) and the second electrode sheet (2) are inserted into the bracket (12).

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