Refrigerator heater

Abstract

The invention discloses a refrigerator heater, which relates to the technical field of electrical equipment. The refrigerator heater comprises a substrate, an insulation layer, a resistance layer, a conductor layer and a coverage layer; and the insulation layer, the resistance layer, the conductor layer and the coverage layer are successively burned to cover the surface of the substrate from bottom to top. The thixotropic paste is burned to form the insulation layer, the resistance layer, the conductor layer and the coverage layer, so that the heat conversion efficiency is high, and the refrigerator heater has the characteristics of good vibration resistance and cold-hot impact resistance; the problems of the existing heater that the surface temperature is relatively high, the dry burningis likely to occur, the cracking probability of a liner is increased due to the high-low temperature impact, the heating route is relatively long, the heat conduction coefficient is small, the defrosting time is long, and the power consumption is large can be solved; and the refrigerator heater is compact in structure, small in size, light in weight, easy to install, and capable of solving the problems of the ordinary heater that the assembling time is long, and the production efficiency is low.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment, in particular to a refrigerator heater. Background technique [0002] At present, the refrigerator industry generally uses steel pipe heaters or quartz heaters to defrost the evaporator. The surface temperature of these two types of heaters is relatively high during operation, and the peak temperature can exceed 300°C, which is prone to dry burning. Moreover, the impact of high and low temperatures increases the shear stress of the inner tank, increasing the chance of cracking the inner tank. At the same time, these two types of heaters are mostly placed at the bottom of the evaporator, mainly relying on conduction and radiation to achieve the purpose of defrosting. Due to the limitations of many unfavorable factors such as long path and small thermal conductivity, the defrosting time is long and the power consumption is large. , contrary to the concept of energy conservation and en...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a refrigerator heater, which is made of insulating layer, resistance layer, conductor layer and covering layer by sintering the thixotropic paste, which has high heat conversion efficiency and has good anti-vibration and anti-cold and heat shock characteristics ; Solve the problem that the surface temperature of the existing heater is high when it is working, and it is prone to dry burning; the high and low temperature impact increases the cracking probability of the inner tank, the heating path is long, and the thermal conductivity is small, which makes the defrosting time long and consumes a lot of power. ; The present invention is compact in structure, small in size, light in weight, easy to install, and solves the problems of long assembly time and low production efficiency of ordinary heaters

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