Miniature ceramic heating core

Abstract

The utility model discloses a miniature ceramic heating core, which comprises an upper ceramic chip, a lower ceramic chip, a lead and a heating circuit, the heating circuit is connected with the lead through an electrode plate, the upper side surface of the upper ceramic chip is provided with a circular fixing table, the upper side surface of the fixing table is provided with a circular sinking groove, and circular reflective glass is arranged in the circular sinking groove. An annular groove is formed in the upper side face of the upper ceramic piece, the outer diameter of the annular groove is the same as that of the upper ceramic piece, and annular reflective glass is arranged in the annular groove. The positioning device has the advantage of being convenient to position.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic heating element technology and relates to a miniature 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 CN209031250U discloses a ceramic heating element for electronic cigarettes, comprising a first alumina ceramic sheet, a second alumina ceramic sheet, and a tungsten paste printed circuit. Both the first and second alumina ceramic sheets are circular and are sintered together. The tungsten paste printed circuit is printed between the first and second alumina ceramic sheets. The second alumina ceramic sheet has circuit grooves that mate with the tungsten paste printed circuit. The tungsten paste printed circuit is connected to electrode pads. The second alumina ceramic sheet has countersunk holes that mate with the electrode pads. An electrode hole penetrating the second alumina ceramic sheet is located in the center of the countersunk hole. Nickel wire is connected to the electrode pads. This technical solution achieves heating by energizing the tungsten paste printed circuit through the wires and electrode sheets. However, this solution lacks a positioning device, which may prevent workers from accurately positioning the ceramic heating element during installation, thus affecting installation efficiency. Utility Model Content

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

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a miniature ceramic heating core, comprising an upper ceramic plate, a lower ceramic plate, a wire, and a heating circuit. The heating circuit is connected to the wire via an electrode plate. A circular fixing platform is provided on the upper side of the upper ceramic plate. A circular groove is formed on the upper side of the fixing platform. A circular reflective glass is placed inside the circular groove. An annular groove is formed on the upper side of the upper ceramic plate. The outer diameter of the annular groove is the same as the outer diameter of the upper ceramic plate. An annular reflective glass is placed inside the annular groove.

[0006] Furthermore, two arc-shaped fixing holes are symmetrically opened on the left and right sides of the fixing platform. The fixing holes are connected to the circumferential side of the fixing platform, and the openings of the fixing holes and the fixing platform are smaller than the diameter of the wire, so that the wire can be locked in the fixing holes.

[0007] Furthermore, two electrode holes are symmetrically opened on the upper side of the upper ceramic sheet, the electrode holes are connected to the fixing holes, and the electrode sheet is located inside the electrode holes.

[0008] Furthermore, the conductor includes a nickel wire conductor and a Teflon sleeve, with the Teflon sleeve fitted around the circumferential side of the nickel wire conductor.

[0009] Furthermore, both ends of the nickel wire extend out of Teflon sleeves, and one end of the nickel wire is connected to the electrode plate, while the other end is coated with molten solder.

[0010] Furthermore, the heating circuit is a tungsten paste heating circuit, and it is a reciprocating, tortuous, ring-shaped circuit.

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

[0012] This invention uses annular and circular reflective glass to locate the ceramic heating core, improving the convenience for workers when installing the ceramic heating core. The fixing platform and fixing holes are used to fix the wires, improving the stability of the connection between the wires and the electrode plates and preventing the wires from detaching from the electrode plates during use. 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 A schematic diagram of the heating circuit.

[0016] In the diagram: 1-Upper ceramic plate; 2-Lower ceramic plate; 3-Heating circuit; 4-Fixing platform; 5-Wire; 6-Annular reflective glass; 7-Circular reflective glass; 8-Electrode hole; 9-Electrode plate; 401-Fixing hole; 501-Nickel wire; 502-Teflon sleeve. 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 miniature ceramic heating core includes an upper ceramic plate 1, a lower ceramic plate 2, a wire 5, and a heating circuit 3. The heating circuit 3 is printed on the opposite sides of the upper ceramic plate 1 and the lower ceramic plate 2, and the upper ceramic plate 1 and the lower ceramic plate 2 are sintered and fixed together in a reducing atmosphere at 1650°C. The heating circuit 3 is connected to the wire 5 through an electrode plate 9. A circular fixing platform 4 is fixed to the upper side of the upper ceramic plate 1 by sintering. A circular groove is opened on the upper side of the fixing platform 4, and a circular reflective glass 7 is glued in the circular groove. An annular groove is opened on the upper side of the upper ceramic plate 1, and the outer diameter of the annular groove is the same as the outer diameter of the upper ceramic plate 1. An annular reflective glass 6 is glued in the annular groove.

[0019] During manufacturing, the upper ceramic plate 1, lower ceramic plate 2, and fixing platform 4 are sintered and fixed together in a reducing atmosphere at 1650℃. Then, one end of the wire 5 is welded and fixed to the electrode plate 9. The circular reflective glass 7 and the annular reflective glass 6 are bonded to the circular groove and the annular groove with silicone. When in use, the staff can determine the position of the ceramic heating core by the reflection of the circular reflective glass 7 and the annular reflective glass 6 when placing the ceramic heating core in a confined space, thereby improving the convenience of installation. After the ceramic heating core is installed, the staff energizes the heating circuit 3 through the wire 5 and the electrode plate 9. Under the action of electricity, the heating circuit 3 generates heat and conducts heat to the outside through the upper ceramic plate 1 and the lower ceramic plate 2, thereby achieving the purpose of heating and ensuring the heating efficiency of the ceramic heating core.

[0020] In this embodiment, two arc-shaped fixing holes 401 are symmetrically opened on the left and right sides of the upper side of the fixing platform 4. The fixing holes 401 are connected to the circumferential side of the fixing platform 4, and the opening of the fixing platform 401 connected to the fixing platform 4 is smaller than the diameter of the wire 5. The wire 5 can be locked in the fixing holes 401. During use, the operator can lock the wire 5 in the fixing holes 401 to prevent the wire 5 from shaking during use, thereby ensuring the stability of the connection between the wire 5 and the electrode plate 9, preventing the wire 5 from detaching from the electrode plate 9 during use, and improving the reliability of the ceramic heating core during use.

[0021] In this embodiment, two electrode holes 8 are symmetrically formed on the upper side of the upper ceramic plate 1. The electrode holes 8 communicate with the fixing hole 401. The electrode plate 9 is located inside the electrode holes 8, and the electrode holes 8 are filled with silicone to ensure the stable connection between the electrode plate 9 and the wire 5. During use, the silicone can prevent external substances from directly contacting the electrode plate 8, thereby reducing the risk of electric shock and leakage and improving the safety of the ceramic heating core. The silicone material can be Wacker Chemie. The RT7 series of high-temperature resistant sealants are suitable for high-temperature electrical insulation and sealing.

[0022] In this embodiment, the conductor 5 includes a nickel wire conductor 501 and a Teflon sleeve 502. The Teflon sleeve 502 is sleeved on the circumferential side of the nickel wire conductor 501. In use, the Teflon sleeve 501 has good insulation and corrosion resistance, which can provide good protection for the nickel wire conductor 501 and extend the service life of the conductor 5.

[0023] In this embodiment, both ends of the nickel wire 501 extend out of the Teflon sleeve 502, and one end of the nickel wire 501 is connected to the electrode plate 9, while the other end is coated with molten solder. During use, the molten solder at one end of the nickel wire 501 facilitates the soldering and fixing of the nickel wire 501 to the external wire circuit, thereby improving the solderability of the nickel wire 501.

[0024] In this embodiment, the heating circuit 3 is a tungsten paste heating circuit, and it is a reciprocating tortuous ring circuit. In use, the reciprocating tortuous ring circuit increases the heating path of the heating circuit 3 and improves the heating efficiency of the ceramic heating core.

[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 miniature ceramic heating core, comprising an upper ceramic plate, a lower ceramic plate, a wire, and a heating circuit, wherein the heating circuit is connected to the wire via an electrode plate, characterized in that: a circular fixing platform is provided on the upper side of the upper ceramic plate, a circular groove is formed on the upper side of the fixing platform, a circular reflective glass is disposed in the circular groove, an annular groove is formed on the upper side of the upper ceramic plate, the outer diameter of the annular groove is the same as the outer diameter of the upper ceramic plate, and an annular reflective glass is disposed in the annular groove.

2. The miniature ceramic heating element according to claim 1, characterized in that: Two arc-shaped fixing holes are symmetrically opened on the left and right sides of the fixing platform. The fixing holes are connected to the circumferential side of the fixing platform, and the opening of the fixing hole connecting the fixing platform is smaller than the diameter of the wire, so that the wire can be locked in the fixing hole.

3. The miniature ceramic heating element according to claim 2, characterized in that: The upper ceramic plate has two symmetrical electrode holes on its upper side, which are connected to the fixing hole, and the electrode plate is located inside the electrode hole.

4. The miniature ceramic heating element according to claim 1, characterized in that: The conductor includes a nickel wire conductor and a Teflon sleeve, with the Teflon sleeve fitted around the circumferential side of the nickel wire conductor.

5. A miniature ceramic heating element according to claim 4, characterized in that: Both ends of the nickel wire extend out of Teflon sleeves, and one end of the nickel wire is connected to the electrode plate, while the other end is coated with molten solder.

6. A miniature ceramic heating element according to claim 1, characterized in that: The heating circuit is a tungsten paste heating circuit, and it is a reciprocating, tortuous, ring-shaped circuit.

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