Processing method of thick film heating device, thick film heating container and equipment

Abstract

The invention relates to a processing method of a thick film heating device. The method comprises a preforming step S1 of stamping a stainless steel substrate to make a pre-deformed substrate with a concave surface, wherein the thickness of the stainless steel substrate is 0.6mm to 4.0mm and the maximum deformation of a prefabricated substrate is 0.2mm to 5mm, a cleaning step S2 of carrying out degreasing cleaning on the prefabricated substrate and drying the prefabricated substrate, a printing sintering step S3 of carrying out printing sintering and heating of thick film paste in the concave surface of the pre-deformed substrate, wherein the concave surface of the pre-deformed substrate is flattened by internal stress generated by thick film paste sintering to form a plane, the area ratio of the thick film paste printing sintering on the substrate to the substrate is 0.2 to 0.8, and the thickness of the thick film paste is 0.1mm to 0.6mm. No deformation of the manufactured thick film heating device is effectively ensured, the rate of finished products is greatly improved, and the thick film heating is popularized very well in the field of home appliances.

Description

technical field [0001] The invention relates to the technical field of electric heating, in particular to a processing method of a thick film heating device, a thick film heating container and food heating equipment with the thick film heating device. Background technique [0002] Most of the electric heating devices currently on the market mainly include electric heating tube heating and electromagnetic heating. However, the heating efficiency of the electric heating tube is low, resulting in a large amount of energy waste; although the energy efficiency of the electromagnetic heating is improved, the cost of the electromagnetic heating device is high, and the volume of the coil and the control circuit are large, which is not conducive to use. [0003] In order to solve the above problems, a thick film heating device has appeared in the industry. The thick film is printed and sintered on a stainless steel substrate. However, if the thickness of the substrate is small, the s...

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Problems solved by technology

However, the heating efficiency of the electric heating tube is low, resulting in a large amount of energy waste; although the energy efficiency of the electromagnetic heating is improved, the cost of the electromagnetic heating device is high, and the volume of its wire reel and control circuit is large, which is not conducive to use

[0003] In order to solve the above problems, a thick film heating device appeared in the industry. The thick film is printed and sintered on the stainless steel substrate. However, if the thickness of the substrate is small, the sintered When the film is thick, the substrate is deformed, which in turn deforms the entire thick film heating plate, which brings troubles to installation and use. Moreover, this deformation can easily cause damage to the thick film sintered on the substrate, which brings more safety hazards

If a thicker substrate is used, the cost will increase significantly, and the thickness of the substrate has a greater impact on the transfer of thermal efficiency, which is not conducive to the improvement of thermal efficiency

The above reasons have greatly hindered the application and promotion of thick film heating devices

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