Uniform-unfreezing type radio frequency heating device

Abstract

An uniform-unfreezing type radio frequency heating deice comprises a radio frequency heater, a medium vessel and a heat exchanger, wherein the medium vessel which is full of a medium solution is arranged between two polar plates of the radio heater; an opening is formed in the upper end of the medium vessel; an object to be unfrozen is dipped into the medium vessel to be unfrozen through the radio frequency heater. The radio frequency unfreezing device is wide in applicable scope; the unfreezing quality is improved; the edge heating effect of an regular object is achieved, and the problem of non-uniform heating caused by non-uniform electromagnetic field distribution due to non-uniform thickness of irregular objects in parallel polar plates can be solved; a tunnel vessel and the medium solution inside are recycled; the cost of reconstructing the device under original basis is low; the additional operation cost is low; the operation is easy; the application scope is wide; frozen objects with different size and shape can be synchronously quickly and uniformly industrially unfrozen.

Description

technical field [0001] The invention belongs to the field of material processing, and in particular relates to a radio frequency heating device capable of uniformly thawing prepackaged frozen objects of various complex shapes. Background technique [0002] Radio frequency waves are electromagnetic waves of 1-300MHz. High frequency electromagnetic waves stimulate the vibration or rotation of ions, atoms, molecules and other microscopic particles inside the food, so that the whole food inside can be heated up rapidly, achieving the effect of rapid overall heating. Typical radio frequency heating is parallel plate type, such as figure 1 As shown, that is: the high-frequency electromagnetic wave is connected to two parallel plates, and the high-voltage high-frequency electric field acts on the whole food, so that the electromagnetic energy is converted into heat energy, and the food is heated. Radio frequency heating can avoid the slow heating rate caused by the traditional hea...

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Problems solved by technology

[0005] In order to solve the defects of the existing technology such as the uneven thawing of the radio frequency heater and the deterioration of the quality of so

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