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A kind of electric heating device with catalytic coating and its preparation method and application

An electric heating device and catalytic coating technology, applied in the field of electrical appliances, can solve problems such as restricting the development of catalyst coating technology and product practicality, limited service life of the catalyst support layer, peeling off of the catalyst support layer, etc., and achieve high bonding strength. , improve the catalytic activity, the effect of convenient operation

Active Publication Date: 2017-09-15
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing air quality control electrical products, under the influence of actual factors such as frequent high and low temperature alternation, large humidity difference, mechanical vibration in the product, and large air volume, the catalyst on the catalyst loading layer will often be catalyzed. The activity is low, and the catalyst support layer is easy to peel off from the electric heating device, resulting in a limited service life of the catalyst support layer, which seriously restricts the development of catalyst coating technology and the practical application of corresponding products

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  • A kind of electric heating device with catalytic coating and its preparation method and application
  • A kind of electric heating device with catalytic coating and its preparation method and application

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preparation example Construction

[0029] In a second aspect, the present invention provides a method for preparing the above-mentioned electric heating device with a catalytic coating, the method comprising the following steps:

[0030] (1) coating a catalytic coating on the outer surface of the insulating and heat-conducting component 1 with a cavity structure inside;

[0031] (2) The heating component 2 is arranged in the cavity of the insulating and heat-conducting component 1 whose outer surface is coated with a catalytic coating;

[0032] (3) Heat the heating component 2 with electricity, so that the catalytic coating forms a catalytic coating 3 on the outer surface of the insulating and heat-conducting component 1 .

[0033] In the method of the present invention, preferably, in step (1), before coating the catalytic coating on the outer surface of the insulating and heat-conducting component 1, the outer surface of the insulating and heat-conducting component 1 is treated to increase the roughness of th...

Embodiment 1

[0053] This embodiment is used to illustrate the electric heating device with catalytic coating and the preparation method thereof of the present invention.

[0054] (1) Mix 10g of aluminum nitrate, 0.207g of sodium chloroplatinate, 7.820g of nickel nitrate, 5.065g of PVP, and 20g of deionized water to obtain a catalytic coating;

[0055] (2) Acid treatment is carried out on the surface of the tubular insulating and heat-conducting component with a cavity structure inside of magnesium aluminum silicate, wherein the acid treatment method includes: placing the tubular insulating and heat-conducting component in a 0.01mol / L nitric acid solution Soak for 15 minutes;

[0056] (3) Coating the catalytic coating on the outer surface of the insulating and heat-conducting assembly obtained in step (2) by means of pressure spraying, wherein the method of pressure spraying comprises spraying for 45 seconds at 2 standard atmospheric pressures using a pressure spraying machine;

[0057] (4...

Embodiment 2

[0062] This embodiment is used to illustrate the electric heating device with catalytic coating and the preparation method thereof of the present invention.

[0063] (1) 15.2g hexamethyl silyl ether, 0.0104g sodium chloroplatinate, 4.5g TiCl 4 , 8.3g PVP, 25.2g dehydrated alcohol mix, obtain catalytic coating;

[0064] (2) Carrying out mechanical grinding treatment to the outer surface of the tubular insulating and heat-conducting assembly whose material is titanium dioxide ceramics with a cavity structure inside;

[0065] (3) Coating the catalytic coating on the outer surface of the insulating and heat-conducting assembly obtained in step (2) by means of pressure spraying, wherein the method of pressure spraying comprises spraying for 50s at 2 standard atmospheric pressures using a pressure spraying machine;

[0066] (4) a Fe-Cr-Al resistance wire with a spiral outer diameter of 15mm is arranged in the cavity of the insulating heat-conducting assembly obtained in step (3); ...

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Abstract

The invention relates to the technical field of electric appliances, and discloses an electric heating device with a catalytic coating, a preparation method thereof, and an application thereof as an electric heating device for air quality regulating electric appliances. The electric heating device of the present invention comprises a heating component (2), an insulating and heat-conducting component (1) with a cavity structure inside and a catalytic coating (3), and the heating component (2) is arranged on the insulating and heat-conducting component (1) In the cavity, the catalytic coating (3) is arranged on the outer surface of the insulating heat conducting component (1). The catalytic coating of the electric heating device of the present invention has the characteristics of both high bonding strength and high catalytic activity, can still run for a long time under severe working conditions, and the service life is obviously prolonged.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to an electric heating device with a catalytic coating and a preparation method and application thereof. Background technique [0002] Household appliances such as air conditioners and air purifiers have gradually become the most commonly used air quality control appliances. On the one hand, the electric heating device built into the air quality control appliances can increase the air temperature when the temperature is low, thereby improving user experience; On the other hand, the method of catalytic oxidation is generally adopted, that is, under the action of a catalyst, the gaseous pollutants in the air can be converted into non-toxic and harmless carbon dioxide and water to achieve air purification. However, for some gaseous pollutants with high boiling point and complex structure, such as benzene series (xylene, toluene, benzene), polycyclic aromatic hydrocarbons,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/88B01D53/72B01J31/38B01J31/28B01J31/32H05B3/10
Inventor 刘刚赵志强
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD