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Heating appliance heating element and preparation method thereof

A technology for heating elements and heating appliances, which is applied to tobacco and other directions, can solve the problems of uncontrollable resistance, poor temperature uniformity, and breakage, and achieve the effects of facilitating temperature control, improving product performance, and preventing corrosion damage.

Active Publication Date: 2022-07-12
SICHUAN SANLIAN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current technology of heating elements for heating appliances is mainly based on "thick film printing technology" for high-temperature co-firing. One is to print heating lines on ceramic substrates and then sinter them. The disadvantage is that the resistance accuracy is low and the heating lines cannot be fully covered. At the same time, the ceramic substrate is brittle and easy to break during use; the other is to use stainless steel as the substrate, then print a layer of insulating material, and then print the heating circuit on the insulating material. This method also has the problem of uncontrollable resistance. At the same time, there is also the problem of the bonding strength between the insulating layer and the stainless steel, which is easy to peel off
Both of them generate heat through the printed heating line, and then transfer the heat to the substrate through the insulating layer, so the temperature uniformity is poor

Method used

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  • Heating appliance heating element and preparation method thereof
  • Heating appliance heating element and preparation method thereof
  • Heating appliance heating element and preparation method thereof

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preparation example Construction

[0040] Another object of the present invention is to provide a preparation method of a heating appliance heating element, the structural form adopts the aforementioned heating appliance heating element, and the preparation method comprises the following steps:

[0041] In step 1, a heating element 1 is produced, and a heating circuit is engraved on the body of the heating element 1 by means of laser engraving.

[0042] Step 2, configure insulating base material;

[0043] According to the weight ratio, the composition of the insulating base material is as follows: silica: 30-60%, alumina: 3-20%, calcium oxide: 2-20%, boron oxide: 1-10%, barium oxide: 1-10 %, zirconia: 1-10%;

[0044] Weigh the required weight of raw materials according to the above ratio, the particle size of the raw materials is controlled at 1um-20um, preferably 2um, and then mixed and dried; the insulating base material formula here is the key to determine the combination of the insulating layer 2 and the h...

Embodiment 1

[0053] The present invention is implemented according to the following steps:

[0054]In step 1, a nickel-iron alloy is used as a heating plate; laser resistance adjustment is performed on the nickel-iron plate. According to the required resistance of 0.9 ohms, the circuit of the heating area and the electrode area is designed, and then the circuit is processed on the nickel-iron alloy sheet by laser. The alloy sheet is arranged in a pointed shape, mainly for the convenience of inserting into the shredded tobacco during use; the circuit in the electrode area is thicker than that of the heating wire, mainly to reduce the heat generation in the electrode area, thereby reducing the energy loss and electrode temperature in the electrode area. Laser processing is used to precisely control the resistance. Afterwards, clean the heating element with adjusted resistance: ultrasonic cleaning with alcohol, mainly to clean the impurities on the surface, so as not to affect the combinatio...

Embodiment 2

[0063] In step 1, a nickel-iron alloy is used as a heating plate; laser resistance adjustment is performed on the nickel-iron plate. According to the required resistance of 1.1 ohms, the circuit of the heating area and the electrode area is designed, and then the circuit is processed on the nickel-iron alloy sheet by laser. The alloy sheet is arranged in the shape of a pointed sheet, and the circuit in the electrode area is thicker than that of the heating wire. Afterwards, the resistance-adjusted heating element is cleaned with alcohol and ultrasonic waves.

[0064] Step 2, configure the insulating base material: according to the designed weight ratio, weigh the raw materials of the required weight, the particle size is 1-20um, preferably 2um, and then mix and dry. The composition of the insulating base material is as follows: silica: 58%, alumina: 18%, calcium oxide: 7%, boron oxide: 7%, barium oxide: 4%, zirconia: 6%.

[0065] Step 3, prepare a colloid, and weigh 61% terp...

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Abstract

The invention belongs to the technical field of tobacco heating appliances, and relates to a heating appliance heating element and a preparation method of the heating appliance heating element. The heating element includes a metal heating sheet, and the heating circuit of the heating sheet is engraved by laser. In the metal heating element of the present invention, a nickel-iron alloy with a high resistance temperature coefficient is used as the heating element, and then an insulating layer is sintered on the surface. The heating element has the advantages of uniform heating, stable resistance, and convenient temperature control. The insulating layer can protect the heating element and prevent the heating element from being damaged by corrosion. The optimal insulating base material ratio, combined with the sintering process, can It is better matched with nickel-iron alloy to improve product performance, and has the advantages of high strength and long life.

Description

technical field [0001] The present invention belongs to the technical field of tobacco heating appliances, and more particularly, the present invention relates to a heating device heating element and a preparation method of the heating device heating element. Background technique [0002] The heating appliance is to precisely control the temperature of the heating element so that the tobacco can bake some cigarette substances without burning. On the premise of achieving the experience of smoke, the production of harmful substances is reduced. Therefore, the heating element of the heating appliance has a high temperature The requirements of the heating element are relatively high, so the resistance accuracy and temperature uniformity of the heating element are crucial. [0003] The current process of heating the heating element of the heating appliance is mainly based on "thick film printing technology" for high-temperature co-firing. One is to print the heating circuit on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24F40/46
CPCA24F40/46
Inventor 包毅邓永汤磊谢力黄玉川
Owner SICHUAN SANLIAN NEW MATERIAL CO LTD
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