A method for defrosting a refrigerator

A refrigerator and pressure difference technology, applied in defrosting, household refrigeration equipment, lighting and heating equipment, etc., can solve the problems of waste of heat, long heating time of plastic parts, long melting time, etc., and achieve the effect of saving electric energy

CN107270631BActive Publication Date: 2020-03-31QINGDAO HAIER REFRIGERATOR CO LTD +1
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-03-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a refrigerator defrosting method which comprises the following steps: judging whether an evaporator needs defrosting; if yes, starting all heater strips to heat all the heater strips for defrosting; detecting the defrosting temperature; utilizing a plurality of pressure difference detecting devices to detect pressure differences of a plurality of different heights so as to obtain a plurality of first pressure difference values; according to each of the first pressure difference values, turning off part of or all heater strips, and / or reducing voltage applied to each of the heater strips in part of or all heater strips; and / or turning off all heater strips according to the defrosting temperature. With adoption of the defrosting method, the heat release amounts of the heater strips at different positions can be properly reduced to enable the evaporator of the refrigerator to defrost as needed, so that the power consumption is reduced, the defrosting duration is shortened and the preservation effect can be enhanced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of refrigerated and frozen storage, in particular to a method for defrosting a refrigerator. Background technique

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. Air-cooled technology uses a built-in hidden cooler (such as the evaporator of the refrigerant circulation system) to cool the air flowing through it, and the fan forces the cold air to circulate, so that the cold air is evenly distributed in each compartment of the refrigerator to achieve cooling. When the air in the refrigerator passes through the surface of the evaporator, the moisture in the air will condense on the surface of the evaporator. Because the temperature of the evaporator is too low, a frost layer will form after a period of time, resulting in a decrease in the heat transfer efficiency of t...

Examples

Embodiment Construction

[0046] figure 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention; figure 2 is a schematic partial structural diagram of a refrigerator according to an embodiment of the present invention; image 3 yes figure 2 Schematic side view of the structure shown. Such as figure 1 , figure 2 with image 3 As shown, the embodiment of the present invention provides a refrigerator. The refrigerator may include a box body 10, a door body, a refrigeration system, a fan, a frost detection device, a defrost heating device and a temperature sensor.

[0047] There are multiple storage compartments inside the box body 10 . Storage compartments are used to store food. The plurality of storage compartments in the embodiment of the present invention may include a refrigerator compartment 11 for frequently storing vegetables, and its temperature control range is generally -5°C to 7°C. The plurality of storage compartments may also incl...