Defrost device and refrigerator having the same

Abstract

The invention provides a thawing device. The thawing device includes a metal cylinder defining a thawing chamber with a forward opening, a radio frequency generating module for generating a radio frequency signal, electrically connected with the radio frequency generating module and capable of generating radio frequency waves of corresponding frequencies in the thawing chamber according to the radio frequency signal The radio frequency antenna, and the detection module for detecting the incident wave signal and the reflected wave signal of the radio frequency antenna. The detection module is configured to calculate the change rate of the dielectric coefficient of the object to be treated according to the voltage and current of the incident wave signal and the voltage and current of the reflected wave signal, so as to judge the thawing progress of the object to be processed. The thawing device also includes a baffle arranged to be in conductive connection with the inner wall of the thawing chamber. The detection module is set in the shielding chamber surrounded by the baffle and the inner wall of the thawing chamber, which can effectively prevent the radio frequency waves generated by the radio frequency antenna from interfering with the detection module, and improve the accuracy of the incident wave signal and the reflected wave signal detected by the detection module. accuracy.

Description

technical field [0001] The invention relates to the field of food thawing, in particular to a thawing device and a refrigerator with the thawing device. Background technique [0002] The quality of the food is preserved during the freezing process, however frozen food needs to be thawed before being processed or eaten. In order to facilitate users to freeze and thaw food, in the prior art, generally, a heating device or a microwave device is provided in the refrigerator to thaw the food. [0003] However, thawing food through a heating device generally requires a long thawing time, and the thawing time and temperature are not easy to control, which is easy to cause the evaporation of water and the loss of juice, and the quality of the food is lost; thawing food through a microwave device, the speed It is fast and efficient, so the loss of nutrients in food is very low, but due to the difference in the penetration and absorption of water and ice by microwaves, and the uneven...

AI Technical Summary

Problems solved by technology

[0003] However, thawing food through a heating device generally requires a long thawing time, and the thawing time and temperature are not easy to control, which will easily cause moisture evaporation and juice loss in the food, resulting in loss of food quality; It is fast and efficient, so the loss of nutrients in food is very low, but due to the difference in the penetration and absorption of water and ice by microwaves, and the uneven distribution of internal substances in food, the melted area absorbs more energy and is prone to thawing Problems with uneven and localized overheating

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