Infrared heating device and electric heating appliance

Abstract

The invention provides an infrared heating device and an electric heating appliance. The infrared heating device comprises an insulating carrier, two electrodes and an infrared heating film, wherein the two electrodes are both arranged in a radial direction of the insulating carrier; and the infrared heating film is attached to the insulating carrier and arranged along a circumferential direction of the insulating carrier, and the infrared heating film is contacted with the two electrodes. The thickness of the part, which approaches to the center of the insulating carrier, of the infrared heating film is less than the thickness of the part, which approaches to the edge, of the infrared heating film, so that for the per unit length, the ratio of the sectional area of the longitudinal section of the infrared heating film to the length of the infrared heating film of the unit length is kept unchanged along the radial direction of the insulating carrier. According to the technical scheme provided by the invention, the resistivity of the infrared heating film between the two electrodes is ensured to be consistent, and thus the heating power of each part of the infrared heating device is ensured to be consistent.

Description

technical field [0001] The invention relates to the field of household appliances, and more specifically, to an infrared heating device and an electric heating appliance. Background technique [0002] The current well-known spraying technology is to make parallel electrodes on a regular square heating carrier plane, so as to ensure that the resistivity of the conductive area between the parallel electrodes is consistent, and then the heating power is consistent. However, in actual use, the square heating carrier sometimes cannot meet the requirements of the use conditions, so an infrared heating plate with an irregular square plane (such as: irregular shape) is required to meet the use conditions. However, taking a disc-shaped heating plate as an example, the resistivity between the center of the circle and the outer side is inconsistent, which will cause the current to pass through the shortest path close to the center of the circle, so that the temperature of the center of...

AI Technical Summary

Problems solved by technology

However, in actual use, the square heating carrier sometimes cannot meet the requirements of the use conditions, so an infrared heating plate with an irregular square plane (such as: special shape) is required to meet the use conditions

However, taking a disc-shaped heating plate as an example, the resistivity between the center of the circle and the outer side is inconsistent, which will cause the current to pass through the shortest path close to the center of the circle, so that the temperature of the center of the heating plate will be much higher than the temperature of the edge of the plate, resulting in uneven heating , and other problems arise

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