Multi-temperature-zone ceramic heating sheet

Abstract

The utility model discloses a kind of multi-temperature zone ceramic heating sheet, including two shape same alumina ceramic sheet, the opposite side of two alumina ceramic sheet is provided with tungsten paste heating circuit, the tungsten paste heating circuit includes low temperature zone, no temperature zone and high temperature zone, the low temperature zone, no temperature zone and high temperature zone are sequentially communicated, the circuit width of no temperature zone, low temperature zone and high temperature zone is sequentially narrowed, the circuit tortuosity of no temperature zone, low temperature zone and high temperature zone gradually increases, one alumina ceramic sheet is provided with the energizing component connected with the two ends of tungsten paste heating circuit;The utility model has the advantage of multi-temperature zone heating.

Description

Technical Field

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

[0002] Traditional heating elements mostly use metal as a base, but in high-temperature and humid environments, metal is prone to corrosion or localized overheating, which reduces the safety and lifespan of the equipment. In recent years, heating elements made of ceramic materials have received widespread attention due to their high temperature resistance, corrosion resistance and high insulation.

[0003] Chinese utility model patent with authorization announcement number CN208806988U discloses a ceramic heating element. The ceramic heating element is a plate-shaped structure composed of an upper ceramic plate, a lower ceramic plate, a heating element, and leads. The heating element is located between the upper and lower ceramic plates and includes a plurality of heating resistors. However, in this technical solution, the ceramic heating element cannot simultaneously meet different heating needs, which may cause inconvenience to the staff during use. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a multi-temperature zone ceramic heating element, 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 multi-temperature zone ceramic heating element, comprising two alumina ceramic sheets of the same shape and size, wherein a tungsten paste heating circuit is provided on the opposite sides of the two alumina ceramic sheets, the tungsten paste heating circuit comprising a low-temperature zone, a temperature-free zone, and a high-temperature zone, the low-temperature zone, the temperature-free zone, and the high-temperature zone being connected in sequence, the circuit width of the temperature-free zone, the low-temperature zone, and the high-temperature zone decreasing in sequence, and the circuit tortuosity of the temperature-free zone, the low-temperature zone, and the high-temperature zone gradually increasing, wherein a power-conducting component connected to both ends of the tungsten paste heating circuit is provided on one of the alumina ceramic sheets.

[0006] Furthermore, the power-conducting component includes two electrode plates respectively disposed at both ends of the tungsten paste heating circuit. The two electrode plates are sandwiched between two alumina ceramic plates. One of the alumina ceramic plates has two electrode holes through which two electrode holes are located at both ends of the tungsten paste heating circuit. Power-conducting wires connected to the electrode plates are disposed in the electrode holes. The ends of the two power-conducting wires away from the electrode holes are connected to a terminal block.

[0007] Furthermore, the energized conductor includes a nickel wire conductor and a fiber tube covering the outside of the nickel wire conductor. One end of the nickel wire conductor is welded to the electrode plate, and the other end is connected to the terminal block.

[0008] Furthermore, a heat shrink tubing is provided at the connection point between the energized wire and the terminal block.

[0009] Furthermore, a dotted adhesive is provided inside the electrode hole.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This utility model, by setting up low-temperature zone, no-temperature zone and high-temperature zone, can simultaneously meet different heating needs, improving the practicality of ceramic heating element. The energizing component realizes the energization of tungsten paste heating circuit, ensuring the reliability of ceramic heating element during use. The adhesive application improves the connection strength of the energizing wire, further improving the reliability of ceramic heating element during use. Attached Figure Description

[0012] Figure 1 This is a front view of the present utility model;

[0013] Figure 2 This is a bottom view of the present invention;

[0014] Figure 3 This is a schematic diagram of the tungsten paste heating circuit of this utility model;

[0015] Figure 4 This is a schematic diagram of the current-carrying conductor structure of this utility model.

[0016] In the diagram: 1. Alumina ceramic sheet; 101. Electrode hole; 2. Tungsten paste heating circuit; 201. Low temperature zone; 202. Temperatureless zone; 203. High temperature zone; 3. Electrode sheet; 4. Power-carrying wire; 401. Nickel wire; 402. Fiber tube; 5. Heat shrink tubing; 6. Terminal block. 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 Figures 1-4As shown, a multi-temperature zone ceramic heating element includes two alumina ceramic sheets 1 of the same shape and size. Tungsten paste heating circuits 2 are arranged on the opposite sides of the two alumina ceramic sheets 1. The tungsten paste heating circuit 2 includes a low-temperature zone 201, a temperatureless zone 202, and a high-temperature zone 203. The low-temperature zone 201, the temperatureless zone 202, and the high-temperature zone 203 are connected in sequence. The circuit width of the temperatureless zone 202, the low-temperature zone 201, and the high-temperature zone 203 gradually narrows. The circuit tortuosity of the temperatureless zone 202, the low-temperature zone 201, and the high-temperature zone 203 gradually increases. One of the alumina ceramic sheets 1 is provided with a power-conducting component connected to both ends of the tungsten paste heating circuit 2.

[0019] In this embodiment, the power-conducting component includes two electrode plates 3 respectively disposed at both ends of the tungsten paste heating circuit 2. The two electrode plates 3 are sandwiched between two alumina ceramic plates 1. Two electrode holes 101 located at both ends of the tungsten paste heating circuit 2 are opened through one of the alumina ceramic plates 1. Power-conducting wires 4 connected to the electrode plates 3 are disposed in the electrode holes 101. A terminal block 6 is connected to one end of the two power-conducting wires 4 away from the electrode holes 101.

[0020] In this embodiment, the power-conducting wire 4 includes a nickel wire 401 and a fiber tube 402 covering the outside of the nickel wire 401. One end of the nickel wire 401 is welded to the electrode plate 3, and the other end is connected to the terminal block 6.

[0021] In this embodiment, a heat shrink tubing 5 is provided at the connection point between the energized wire 4 and the wire of the terminal block 6.

[0022] In this embodiment, a dotted adhesive is provided inside the electrode hole 101.

[0023] The working principle of this technical solution is as follows: During production, the operator prints the tungsten paste heating circuit 2 onto the opposite sides of two alumina ceramic sheets 1. Then, the operator clamps the electrode sheet 3 onto the opposite sides of the two alumina ceramic sheets 1 and positions it at the end of the tungsten paste printed circuit. Subsequently, the two alumina ceramic sheets 1 and the electrode sheet 3 are fixedly connected together by high-temperature sintering. After sintering, the operator welds one end of the power-carrying wire 4 onto the electrode sheet 3 and fixes it with glue to prevent the power-carrying wire 4 from detaching from the electrode sheet 3 during use. The other end of the power-carrying wire 4 is connected to the terminal 6 through heat shrink tubing 5. The heat shrink tubing 5 can ensure the connection strength between the terminal 6 and the power-carrying wire 4, and at the same time, it can protect the connection between the terminal 6 and the power-carrying wire 4, ensuring the reliability of the ceramic heating element during use.

[0024] During use, due to the different degrees of tortuosity and line width of the heating circuit in the low-temperature zone 201, the no-temperature zone 202, and the high-temperature zone 203, the more tortuous and complex the heating circuit, the higher the heating efficiency; the narrower the heating circuit, the higher the heating efficiency. Thus, the heating efficiency of the low-temperature zone 201, the no-temperature zone 202, and the high-temperature zone 203 increases sequentially. When using this ceramic heating element, the operator can simultaneously meet different heating needs, thus improving the practicality of the ceramic heating element.

[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 multi-temperature zone ceramic heating element, comprising two alumina ceramic sheets of the same shape and size, characterized in that: Tungsten paste heating circuits are provided on the opposite sides of the two alumina ceramic sheets. The tungsten paste heating circuits include a low-temperature zone, a temperatureless zone, and a high-temperature zone. The low-temperature zone, the temperatureless zone, and the high-temperature zone are connected in sequence. The circuit width of the temperatureless zone, the low-temperature zone, and the high-temperature zone gradually narrows. The circuit tortuosity of the temperatureless zone, the low-temperature zone, and the high-temperature zone gradually increases. One of the alumina ceramic sheets is provided with a power-conducting component connected to both ends of the tungsten paste heating circuit.

2. The multi-temperature zone ceramic heating element according to claim 1, characterized in that: The power-conducting component includes two electrode plates respectively disposed at both ends of the tungsten paste heating circuit. The two electrode plates are sandwiched between two alumina ceramic plates. One of the alumina ceramic plates has two electrode holes through which two electrode holes are located at both ends of the tungsten paste heating circuit. Power-conducting wires connected to the electrode plates are disposed in the electrode holes. The ends of the two power-conducting wires away from the electrode holes are connected to a terminal block.

3. The multi-temperature zone ceramic heating element according to claim 2, characterized in that: The energized conductor includes a nickel wire conductor and a fiber tube covering the outside of the nickel wire conductor. One end of the nickel wire conductor is welded to the electrode plate, and the other end is connected to the terminal block.

4. The multi-temperature zone ceramic heating element according to claim 2, characterized in that: Heat shrink tubing is provided at the connection between the energized wire and the terminal block.

5. A multi-temperature zone ceramic heating element according to claim 2, characterized in that: The electrode hole is filled with adhesive.

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