Refrigerator defrosting heater and controlling method thereof

A technology for defrosting heaters and refrigerators, which is applied in defrosting, lighting and heating equipment, and household refrigeration equipment, etc. The effect of extending the heating time

Inactive Publication Date: 2008-07-02
美的集团电冰箱制造(合肥)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since some crushed ice accumulates around the drain pan and the drain pipe during the defrosting process, the only way to completely defrost and solve the problem of ice blockage in the drain pipe is to prolong the heating time of the entire defrosting heater, but this obviously brings increased energy consumption

Method used

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  • Refrigerator defrosting heater and controlling method thereof

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Embodiment Construction

[0017] Referring to Figures 1 and 2, this embodiment sets up independently controllable main heater 1 and auxiliary heater 2 in groups. Main heater 1 is an evaporator defrost heater, and auxiliary heater 2 is a drain pan 6 and a drain pipe. 7's defrost heater.

[0018] The main heater 1 is fixed on the fins of the evaporator 3 in an embedded manner, and the auxiliary heater 2 is fixed on the surface of the water receiving pan 6 and the drain port 7 in a bonding manner.

[0019] Control method of defrost heater:

[0020] When the computer-controlled refrigerator enters the defrosting process, when the defrosting starts, both the main heater 1 and the auxiliary heater 2 are activated and put into defrosting;

[0021] When the surface temperature of the evaporator 3 detected by the temperature sensor 4 rises to the set value, the defrosting of the evaporator 3 is completed, the main heater 1 stops working, and the auxiliary heater 2 continues to work, and the auxiliary heater 2 Heat ...

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PUM

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Abstract

A refrigerator defrosting heater and a control method thereof are provided. The refrigerator defrosting heater is characterized in that a main heater and an auxiliary heater are arranged in group and controlled independently, the main heater is a defrosting heater for an evaporator, and the auxiliary heater is a defrosting heater consisting of a defrosting tray and a drainage pipe. The control method comprises: the main heater and the auxiliary heater are started synchronously to defrost when the defrosting operation is initiated; the main heater is stopped when the evaporator is defrosted completely, while the auxiliary heater continues working; the auxiliary heater is stopped when the defrosting tray and the drainage pipe are defrosted completely; and the whole defrosting process is ended. The invention is particularly suitable for the use in an air-cooling refrigerator and can efficiently prevent the drainage pipe from being blocked by ices and reduce the energy consumption.

Description

Technical field [0001] The invention relates to a refrigerator defrosting heater and its control method. Background technique [0002] After the refrigerator runs for a period of time, a layer of frost will form on the surface of the evaporator. The existence of this frost layer will affect the cold capacity exchange of the evaporator and seriously reduce the refrigeration efficiency of the refrigerator. Therefore, the refrigerator must have a periodic defrosting function. [0003] The general defrost device includes: evaporator, defrost heater, defrost controller, high temperature protector, drain pan, drain pipe and other components. When the refrigerator has been working continuously for a certain period of time, the defrosting controller turns on the power supply and the defrosting heater starts to work. When the evaporator surface has melted, the controller cuts off the power supply for the defrosting heater, and the defrosting water flows from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D21/08
Inventor 陶同盛金文俊刘宜宁
Owner 美的集团电冰箱制造(合肥)有限公司
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