Surface-mounted ceramic heating core

Abstract

The utility model discloses a paster type ceramic heating core, comprising an upper ceramic sheet, a lower ceramic sheet and a heating circuit, the upper side surface of the upper ceramic sheet is provided with a first electrode sheet and a second electrode sheet, the first electrode sheet and the second electrode sheet are annular, the second electrode sheet is arranged at the inner side of the first electrode sheet, and the heating circuit is arranged on the lower ceramic sheet. Step-shaped annular grooves are formed in the opposite side faces of the first electrode plate and the second electrode plate, fixing rings are arranged in the annular grooves, the lower side faces of the fixing rings are attached to the upper side faces of the first electrode plate and the second electrode plate, and the lower side faces of the fixing rings are fixedly connected with the upper ceramic plate; the utility model has the advantage of preventing the external electrode from falling off.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic heating element technology, and relates to a patch ceramic heating element. Background Technology

[0002] A ceramic heating element is a heating element commonly found in various electrical appliances, such as electric kettles, electric heaters, electronic cigarettes, and air humidifiers. Ceramic heating elements are made of ceramic materials and resistance wires and have advantages such as excellent high-temperature resistance, stable heating effect, and long life.

[0003] Chinese utility model patent CN212324395U discloses a ceramic heating element for a moxibustion atomizer, comprising a first alumina ceramic sheet, a second alumina ceramic sheet, and a tungsten paste printed circuit disposed between the first and second alumina ceramic sheets. The first alumina ceramic sheet has a first electrode through-hole and a second electrode through-hole, both of which are connected to the tungsten paste printed circuit. The side of the first alumina ceramic sheet has a first external electrode piece and a second external electrode piece, respectively connected to the first and second electrode pieces but not in contact with each other. This technical solution heats the ceramic heating element by energizing the tungsten paste printed circuit through the first and second external electrode pieces. However, this technical solution does not fix the external electrodes, which may detach during use, affecting the use of the ceramic heating element. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a patch-type ceramic heating core, which effectively solves the issues in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a patch ceramic heating core, comprising an upper ceramic plate, a lower ceramic plate, and a heating circuit. A T-shaped annular groove is formed on the upper side of the upper ceramic plate. A first electrode plate and a second electrode plate are disposed in the T-shaped annular groove. Both the first and second electrode plates are annular, and the second electrode plate is located inside the first electrode plate. A stepped annular groove is formed on the opposite sides of the first and second electrode plates. A fixing ring is disposed in the annular groove. The fixing ring has a T-shaped cross-section, and the lower side of the fixing ring is attached to the upper side of the first and second electrode plates. The lower side of the fixing ring is also connected and fixed to the upper ceramic plate.

[0006] Furthermore, both the upper and lower ceramic plates are annular, with the outer ring diameter being 7mm and the inner ring diameter being 2mm.

[0007] Furthermore, two through holes are formed on the upper side of the upper ceramic plate, and the through holes are connected to the heating circuit. An electrode hole is formed on the upper side of both the first electrode plate and the second electrode plate, and it is connected to the through holes.

[0008] Furthermore, the heating circuit is a loop circuit with a reciprocating and zigzag arrangement.

[0009] Furthermore, the upper ceramic sheet, the first electrode sheet, the second electrode sheet, and the upper side surface of the fixing ring are flush.

[0010] Furthermore, the upper ceramic plate, the lower ceramic plate, and the fixing ring are all made of alumina ceramic.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention uses a fixing ring to fix the first electrode plate and the second electrode plate, preventing the first electrode plate from detaching from the upper ceramic plate and improving the stability of the first and second electrode plates on the upper ceramic plate. The electrode holes enable the connection between the first and second electrode plates and the heating circuit, ensuring the heating efficiency of the ceramic heating core. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Top view;

[0015] Figure 3 This utility model Figure 1 The heating circuit diagram.

[0016] In the diagram, 1-lower ceramic plate; 2-upper ceramic plate; 3-heating circuit; 4-first electrode plate; 5-second electrode plate; 6-fixing ring; 7-electrode hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 , Figure 2 , Figure 3As shown, a patch-type ceramic heating core includes an upper ceramic plate 2, a lower ceramic plate 1, and a heating circuit 3. The heating circuit 3 is printed on the opposite sides of the upper ceramic plate 2 and the lower ceramic plate 1. A T-shaped annular groove is formed on the upper side of the upper ceramic plate 2. A first electrode plate 4 and a second electrode plate 5 are disposed in the T-shaped annular groove. Both the first electrode plate 4 and the second electrode plate 5 are annular, and the second electrode plate 5 is located inside the first electrode plate 4. Both the first electrode plate 4 and the second electrode plate 5 are connected to the heating circuit 3. A stepped annular groove is formed on the opposite side of the first electrode plate 4 and the second electrode plate 5. A fixing ring 6 is disposed in the annular groove. The fixing ring 6 has a T-shaped cross-section, and the lower side of the fixing ring 6 is attached to the upper side of the first electrode plate 4 and the second electrode plate 5. The lower side of the fixing ring 6 is fixed to the upper ceramic plate 2 by sintering.

[0019] During manufacturing, the heating circuit 3 is printed on the opposite sides of the ceramic sheet 2 and the lower ceramic sheet 1. The first electrode sheet 4 and the second electrode sheet 5 are pressed onto the upper side of the upper ceramic sheet 2. Then, the fixing ring 6 is inserted into the ring groove, and the lower side of the fixing ring 6 is made to fit against the side of the first electrode sheet 4 and the second electrode sheet 5. The assembled ceramic heating core is placed in a reducing atmosphere at 1650℃ for sintering, so that the upper ceramic sheet 2, the lower ceramic sheet 1, and the fixing ring 6 are connected and fixed to ensure the reliability of the ceramic heating core during use. At the same time, the fixing ring 6 can prevent the first electrode sheet 4 and the second electrode sheet 5 from detaching from the upper ceramic sheet 2, thereby improving the stability of the first electrode sheet 4 and the second electrode sheet 5 during use. During use, the workers connect the first electrode sheet 4 and the second electrode sheet 5 to the wires respectively to energize the heating circuit 3, so that the heating circuit 3 generates heat, which is conducted to the outside through the upper ceramic sheet 2 and the lower ceramic sheet 1 to achieve the purpose of heating.

[0020] In this embodiment, both the upper ceramic plate 2 and the lower ceramic plate 1 are annular, and the outer ring diameter of the upper ceramic plate 2 and the lower ceramic plate 1 is 7mm, while the inner ring diameter is 2mm. During use, the inner ring can be positioned when installing the ceramic heating core, which improves the convenience of installing the ceramic heating core.

[0021] In this embodiment, the upper side of the first electrode plate 4 and the second electrode plate 5 are each provided with an electrode hole 7 that passes through the upper ceramic plate 2 and communicates with the heating circuit 3. In use, the electrode hole 7 is filled with tungsten paste. The first electrode plate 4 and the second electrode plate 5 are connected to the heating circuit 3 through the tungsten paste in the electrode hole 7 to ensure the reliability of the heating circuit 3 when heating.

[0022] In this embodiment, the heating circuit 3 is a loop circuit with a reciprocating tortuous arrangement. In use, the reciprocating tortuous loop circuit increases the heating path of the heating circuit 3 and improves the heating efficiency of the ceramic heating core.

[0023] In this embodiment, the upper ceramic plate 2, the first electrode plate 4, the second electrode plate 5, and the fixing ring 6 are flat. During use, the flatness of the upper ceramic plate 2, the first electrode plate 4, the second electrode plate 5, and the fixing ring 6 can prevent the upper ceramic plate 2, the first electrode plate 4, the second electrode plate 5, and the fixing ring 6 from rubbing against the outside world, and prevent the upper ceramic plate 2, the first electrode plate 4, the second electrode plate 5, and the fixing ring 6 from being damaged.

[0024] In this embodiment, the upper ceramic plate 2, the lower ceramic plate 1, and the fixing ring 6 are all made of alumina ceramic.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface-mount ceramic heating element, comprising an upper ceramic plate, a lower ceramic plate, and a heating circuit, wherein a T-shaped annular groove is formed on the upper side of the upper ceramic plate, and a first electrode plate and a second electrode plate are disposed within the T-shaped annular groove, characterized in that: Both the first electrode sheet and the second electrode sheet are annular, with the second electrode sheet located inside the first electrode sheet. The opposite sides of the first and second electrode sheets are provided with stepped annular grooves, and a fixing ring is provided in the annular grooves. The fixing ring has a T-shaped cross-section, and the lower side of the fixing ring is in contact with the upper side of the first and second electrode sheets. The lower side of the fixing ring is also connected and fixed to the upper ceramic sheet.

2. The patch-type ceramic heating element according to claim 1, characterized in that: Both the upper and lower ceramic plates are annular, with the outer ring diameter being 7mm and the inner ring diameter being 2mm.

3. The patch-type ceramic heating element according to claim 1, characterized in that: Two through holes are formed on the upper side of the ceramic plate, and the through holes are connected to the heating circuit. An electrode hole is formed on the upper side of both the first electrode plate and the second electrode plate, and it is connected to the through holes.

4. The patch-type ceramic heating element according to claim 1, characterized in that: The heating circuit is a loop circuit with a reciprocating and zigzagging configuration.

5. A patch-type ceramic heating element according to claim 1, characterized in that: The upper ceramic plate, the first electrode plate, the second electrode plate, and the upper side of the fixing ring are flush.

6. A patch-type ceramic heating element according to claim 1, characterized in that: The upper ceramic plate, lower ceramic plate, and fixing ring are all made of alumina ceramic.

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