Thick and thin double-layer ceramic heating core

Abstract

The utility model discloses a thick and thin double-layer ceramic heating core, which comprises an upper ceramic chip, a lower ceramic chip and a heating circuit, two ends of the heating circuit are provided with electrode slices, the upper side surfaces of the electrode slices are connected with leads, and one end of the circumferential side surface of the lower ceramic chip, which is close to the leads, is provided with a lead fixing block. A front wire fixing hole and a rear wire fixing hole are formed in the right side face of the wire fixing block, the wire fixing holes are communicated with the upper side face of the wire fixing block, the width of openings of the wire fixing holes and the upper side face of the wire fixing block is smaller than the diameter of wires, and the wires can penetrate through the openings to be clamped in the wire fixing holes; the wire limiting device has the advantage of limiting the wire.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic heating cores and relates to a thick and thin double-layer ceramic heating core. Background Art

[0002] A ceramic heating core is a heating element commonly used in various electrical appliances such as electric kettles, electric heaters, electronic cigarettes, air humidifiers, etc. The ceramic heating core is composed of a ceramic material and a resistance wire, and has excellent high-temperature resistance, stable heating effect, long service life, etc.

[0003] The Chinese utility model patent with the authorization announcement number CN211557507U discloses a low-voltage high-power ceramic heating sheet, which includes a first alumina ceramic sheet, a second alumina ceramic sheet and a tungsten paste printed circuit. A welding groove is provided on the first alumina ceramic sheet corresponding to the welding area, and a lead is welded to the welding area through a welding pad. The connecting end of the lead is accommodated in the welding groove; a notch is provided at the edge of the complete alumina ceramic sheet; this technical solution fixes the complete alumina ceramic sheet directionally through the notch to avoid the rotation of the complete alumina ceramic sheet; at the same time, by accommodating the welding point of the lead and the tungsten paste printed circuit in the welding groove, but there is no fixing device for the wire in this technical solution, which may cause the wire to separate from the electrode sheet, thereby affecting the use of the ceramic heating core. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a thick and thin double-layer ceramic heating core, which solves the problems in the prior art well.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: A thick and thin double-layer ceramic heating core includes an upper ceramic sheet, a lower ceramic sheet and a heating circuit. Electrode sheets are provided at both ends of the heating circuit. Wires are connected to the upper side surfaces of the electrode sheets. A wire fixing block is provided at one end of the circumferential side surface of the lower ceramic sheet close to the wire. Two front and rear wire fixing holes are opened on the right side surface of the wire fixing block. The wire fixing holes communicate with the upper side surface of the wire fixing block, and the width of the opening of the wire fixing hole and the upper side surface of the wire fixing block is smaller than the diameter of the wire. The wire can pass through the opening and be clamped in the wire fixing hole.

[0006] Further, both the upper ceramic sheet and the lower ceramic sheet are annular structures, and the outer ring diameter is 11m and the inner ring diameter is 4mm.

[0007] Further, the thickness of the upper ceramic sheet is greater than that of the lower ceramic sheet.

[0008] Further, an electrode hole communicating with the wire fixing hole is opened on the upper side surface of the upper ceramic sheet, and the electrode sheet is located in the electrode hole.

[0009] Further, the wire includes a nickel wire and a Teflon sleeve. The Teflon sleeve is coated on the outer side of the nickel wire, and the Teflon sleeve is fixed in the wire fixing block.

[0010] Further, a silica gel is provided for coating at the connection between the nickel wire and the electrode plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model realizes the limit of the wire through the wire fixing block and the wire fixing hole, prevents the wire from swinging during use, and further prevents the wire from detaching from the electrode plate during use, improving the reliability of the ceramic heating core during use. The energization of the heating circuit is realized through the Teflon sleeve and the nickel wire, ensuring the reliability of the heating circuit during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the top view of the utility model;

[0014] Figure 2 is the right view of the utility model;

[0015] Figure 3 is the Figure 1 heating circuit diagram of the utility model;

[0016] Figure 4 is the Figure 1 top view of the upper ceramic plate of the utility model;

[0017] Figure 5 is the Figure 1 top view of the lower ceramic plate of the utility model.

[0018] In the figure: 1, upper ceramic plate; 2, lower ceramic plate; 3, heating circuit; 4, electrode plate; 5, wire; 101, electrode hole; 201, wire fixing block; 202, fixing hole; 501, Teflon sleeve; 502, nickel wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figures 1-5As shown in the figure, a double-layer ceramic heating core with different thicknesses includes an upper ceramic sheet 1, a lower ceramic sheet 2, and a heating circuit 3. Electrodes 4 are provided at both ends of the heating circuit 3. The heating circuit 3 and the electrodes 4 are both clamped on the opposite side surfaces of the upper ceramic sheet 1 and the lower ceramic sheet 2. The upper ceramic sheet 1 and the lower ceramic sheet 2 can be sintered and formed in a reducing atmosphere at 1650°C. Wires 5 are welded to the upper side surfaces of the electrodes 4. An integrally formed wire fixing block 201 is provided on the annular side surface of the lower ceramic sheet 2 close to the wires 5. Two front and rear wire fixing holes 202 are opened on the right side surface of the wire fixing block 201. The wire fixing holes 202 communicate with the upper side surface of the wire fixing block 201, and the width of the opening of the wire fixing holes 202 and the upper side surface of the wire fixing block 201 is smaller than the diameter of the wire 5. The wire 5 can pass through the opening and be clamped in the wire fixing holes 202.

[0021] During use, the staff welds the wire 5 to the electrode 4, and then presses the wire 5 into the wire fixing hole 202 from above the wire fixing hole 202, thereby limiting the wire 5 to prevent the wire 5 from swinging during use, and further preventing the wire 5 from detaching from the electrode 4, ensuring the reliability of the ceramic heating core during use. Then, the staff energizes the wire 5, and the current enters the heating circuit 3 through the wire 5 and the electrode 4. Under the action of the current, the heating circuit 3 generates heat and conducts heat through the upper ceramic sheet 1 and the lower ceramic sheet 2, so as to achieve the effect of heating the outside world.

[0022] In this embodiment, both the upper ceramic sheet 1 and the lower ceramic sheet 2 are annular structures, and the outer ring diameter is 11m, and the inner ring diameter is 4mm.

[0023] In this embodiment, the thickness of the upper ceramic sheet 1 is greater than that of the lower ceramic sheet 2.

[0024] In this embodiment, electrode holes 101 communicating with the wire fixing holes 202 are opened on the upper side surface of the upper ceramic sheet 1. The electrodes 4 are located in the electrode holes 101. During use, the staff can fix the wire 5 to the electrode 4 through the electrode holes 101, improving the convenience of the staff when welding the wire 5.

[0025] In this embodiment, the wire 5 includes a nickel wire 502 and a Teflon sleeve 501. The Teflon sleeve 501 is coated on the outer side surface of the nickel wire 502. The Teflon sleeve 501 is installed in the wire fixing block 201. During use, the Teflon sleeve 501 has a certain flexibility, which enables the staff to press the wire 5 into the wire fixing hole 202. At the same time, the Teflon sleeve 501 has good corrosion resistance and insulation properties, and can provide good protection for the nickel wire 502.

[0026] In this embodiment, a silica gel is provided to wrap the connection between the nickel wire conductor 502 and the electrode plate 4. During use, the silica gel can prevent the connection between the nickel wire conductor 502 and the electrode plate 4 from contacting the outside world, reducing the risk of electric leakage. At the same time, the silica gel increases the connection strength between the nickel wire conductor 502 and the electrode plate 4, thereby ensuring the reliability of the ceramic heating core during use.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thick-thin double-layer ceramic heating core, comprising an upper ceramic sheet, a lower ceramic sheet and a heating circuit, wherein both ends of the heating circuit are provided with electrode sheets, and the upper and side surfaces of the electrode sheets are connected with wires, characterized in that: A wire fixing block is provided at one end of the circumferential side surface of the lower ceramic sheet close to the wire, and two front and rear wire fixing holes are opened on the right side surface of the wire fixing block. The wire fixing hole is communicated with the upper side surface of the wire fixing block, and the width of the opening between the wire fixing hole and the upper side surface of the wire fixing block is smaller than the diameter of the wire, and the wire can pass through the opening and be clamped in the wire fixing hole.

2. A thick and thin double-layer ceramic heating core according to claim 1, characterized in that: The upper ceramic sheet and the lower ceramic sheet are both annular structures, with an outer ring diameter of 11 mm and an inner ring diameter of 4 mm.

3. The thick-thin double-layer ceramic heating core according to claim 1, characterized in that: The thickness of the upper ceramic sheet is greater than that of the lower ceramic sheet.

4. The thick-thin double-layer ceramic heating core according to claim 1, characterized in that: An electrode hole connected to the wire fixing hole is provided on the upper side of the upper ceramic sheet, and the electrode sheet is located in the electrode hole.

5. The thick-thin double-layer ceramic heating core according to claim 1, characterized in that: The conductor comprises a nickel wire conductor and a Teflon sleeve, wherein the Teflon sleeve is coated on the outer side of the nickel wire conductor and the Teflon sleeve is fixed in a conductor fixing block.

6. The thick-thin double-layer ceramic heating core according to claim 5, characterized in that: The connection between the nickel wire and the electrode sheet is coated with silica gel.

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