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Infrared electric heating film heating tube with double-film layer structure as well as preparation method and application thereof

A technology of film structure and electric heating film, applied in the direction of ohmic resistance heating parts, heating elements, heating element materials, etc., can solve the problem of small radiation-convection heat transfer ratio, less "doping" and low film emission ratio and other problems, to achieve the effect of strong shape selectivity, reducing convective heat transfer, and strengthening radiation heat transfer

Inactive Publication Date: 2012-08-22
吕一诺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main defects of the existing electrothermal film technology are: ① The existing technology improves the emission ratio by "doping" metal chlorides. A large amount of impurities affects the conductivity of the electrothermal film, which cannot reflect the energy-saving advantage of "infrared high radiation" of the electrothermal film heating element; ②The efficiency of the single-layer film structure is low, and the radiation-convective heat transfer ratio is small; ③The energy consumption of the electrothermal film spraying method , high cost, cumbersome operation, and low product stability

Method used

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  • Infrared electric heating film heating tube with double-film layer structure as well as preparation method and application thereof
  • Infrared electric heating film heating tube with double-film layer structure as well as preparation method and application thereof
  • Infrared electric heating film heating tube with double-film layer structure as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] See attached figure 1 , 2 In the first embodiment of the present invention, the infrared electrothermal film heating tube with a double-layer structure includes a ceramic tube electrothermal film substrate 1 and electrodes 4 arranged at both ends of the electrothermal film substrate 1. The electrothermal film substrate 1 has a diameter of 16mm and a wall Thickness 3mm, tube length 230mm, its surface is vapor-deposited with a conductive film layer 2, the surface of this conductive film layer 2 is vapor-deposited with an infrared high-emitting film layer 3, and the conductive film layer 2 is SnO 2 : Sb thin film layer, the infrared high-emitting film layer 3 comprises the following substances in parts by weight: manganese dichloride 40, nickel dichloride 15, chromium trichloride 5.

[0035] The preparation method of the infrared electrothermal film heating tube of the present embodiment double film structure, its steps are:

[0036] Pretreatment 1. Cleaning and drying of...

Embodiment 2

[0045] The difference between the second embodiment of the present invention and the first embodiment is:

[0046] ① The electrothermal film liquid contains by weight and number: 45 tin tetrachloride, 2.0 antimony trichloride, 1.0 nickel trichloride, 0.6 indium trichloride, 10 glycerol, 6 nitric acid, and 25 deionized water;

[0047] ②The infrared high-emissivity film solution contains: 35 parts by weight of manganese dichloride, 20 parts of nickel dichloride, 5 parts of chromium trichloride, 10 parts of glycerol, and 25 parts of deionized water.

[0048] See attached Figure 5 , the heating device prepared by using the heating tube of this embodiment, the structure includes two infrared electrothermal film heating tubes 11 with a double-layer structure, the two ends of the two heating tubes 11 are fixed on the rectangular bracket 20, and the two heating tubes 11 The front end is provided with a safety net cover II 21, the rear end is provided with a reflector II 22, the rect...

Embodiment 3

[0050] The difference between the third embodiment of the present invention and the first embodiment is:

[0051] ① The electrothermal film solution contains by weight and number: 55 tin tetrachloride, 1.5 antimony trichloride, 0.5 nickel trichloride, 0.5 indium trichloride, 10 ethanol, 10 nitric acid, and 25 deionized water;

[0052] ②The infrared high-emissivity film liquid contains: 45 parts by weight of manganese dichloride, 15 parts of nickel dichloride, 5 parts of chromium trichloride, 10 parts of ethanol, and 25 parts of deionized water.

[0053] The application method of this embodiment is the same as that of Embodiment 1.

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Abstract

The invention discloses an infrared electric heating film heating device with a double-film layer structure, which structurally comprises an electric heating film substrate and electrodes arranged on the two ends of the electric heating film substrate, wherein an electric conduction film layer and an infrared high emission film layer are sequentially evaporated on the surface of the electric heating film substrate. A preparation method of the infrared electric heating film heating device comprises the steps of: sequentially evaporating the electric conduction film layer and the infrared high emission film layer to the electric heating film substrate by using a high-temperature evaporation furnace, wherein an electric heating film solution comprises the components in parts by weight: 45-58parts of stannic chloride, 0.3-2.0 parts of antimony butter, 0.4-1.2 parts of nickel trichloride, 0.3-1.0 part of indium chloride, 5-15 parts of ethanol / glycerol, 6-17 parts of inorganic acid, and 20-30 parts of deionized water, and an infrared high emission film solution comprises the components in parts by weight: 35-45 parts of manganous chloride, 15-20 parts of nickel dichloride, 5-10 parts of chromium trichloride, 5-15 parts of ethanol / glycerol and 20-30 parts of deionized water; and finally assembling the electrodes to obtain the infrared electric heating film heating device. In the invention, the double-film layer structure is adopted for the infrared electric heating film heating device, which can greatly enhance radiative heat transfer, reduce convection heat transfer, improve energy efficiency and save energy sources.

Description

technical field [0001] The invention relates to an infrared electrothermal film heating tube with a double-film structure, a preparation method and an application thereof, and belongs to the fields of semiconductor heating technology and infrared heating technology. Background technique [0002] With the increasingly severe energy crisis, energy conservation and emission reduction has become a social issue of concern. In view of the defects of the current side-heating electric heating element, such as large thermal inertia, high temperature, easy oxidation, low heat conversion efficiency, and short service life, a variety of electric heating film heating elements have appeared one after another. As a surface heating element, it has the characteristics of direct heating, small heat capacity, no open flame, and high thermal efficiency. It can solve the problems of low temperature and narrow application range of traditional electric heating films. Chinese patents with publicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/40H05B3/14H05B3/06C23C16/40C23C16/44C23C16/448
Inventor 吕一诺杨景发杜明月国唯唯
Owner 吕一诺
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