Ohmic heating unfreezing device and unfreezing method for aquatic products
A technology for aquatic products and electrodes, which is applied in the direction of preservation of meat/fish through freezing/cooling, which can solve the problems of uneven temperature distribution, large loss of nutrients, and easy drying of the material surface, achieving wide processing range, fast thawing speed, even heating effect
Inactive Publication Date: 2016-06-29
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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Problems solved by technology
Natural thawing has the disadvantages of long thawing time, material surface is easy to dry, discoloration, and serious microbial contamination; flowing water thawing has the disadvantages of large water consumption; microwave thawing has the disadvantages of large loss of nutrients, and there are uneven temperature distribution and local overheating and other phenomena
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0026] see Figure 1-Figure 2 :
[0027] 1. Electric heating method
[0028] Unpack the aquatic product to be thawed, place it in the thawing frame 13, then immerse the thawing frame 13 in the thawing tank 6, and the thawing tank is equipped with a concentration of 0.9-1.5% sodium chloride solution as the conductive liquid to ensure that the conductive liquid Submerge the aquatic product completely, keep the temperature of the conductive liquid at 15±0.5°C, connect the power supply 7, and use a 110-250V power supply to energize. The voltage can be adjusted through the voltage regulator 9 according to the size and conductivity of the aquatic product. The basis for adjustment For the electric current by aquatic product remains on 0.5-1A, electric current can be adjusted by current regulator 8, guarantees the speed of thawing. Insert an insulat...
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The invention relates to an ohmic heating unfreezing device for aquatic products.The device comprises an unfreezing tank made of an insulation material and a conductive liquid circulating tank; conductive liquid, a pair of electrodes, a first thermocouple and unfreezing frames are arranged in the unfreezing tank; the unfreezing frames are made of the insulation material, the four faces of each unfreezing frame are hollow, the aquatic products to be unfrozen are put in the unfreezing frames, and the first thermocouple is connected with the centers of the aquatic products to be unfrozen and used for monitoring the temperature; the electrodes are connected with a power supply, and the power supply is provided with a current regulator and a voltage regulator; the thermocouple, the current regulator and the voltage regulator are all connected with a data recorder, and the data recorder records currents, voltage and temperature data monitored by the first thermocouple in real time; a refrigerating system, a heating system and a second thermocouple are arranged in the conductive liquid circulating tank; the refrigerating system and the heating system are regulated by a temperature regulator to work separately; pump circulation is formed between the conductive liquid circulating tank and the unfreezing tank made of the insulation material, and the conductive liquid circulating tank and the unfreezing tank made of the insulation material achieve circulation through pump liquid to monitor the temperature of conductive liquid contained in the unfreezing tank.
Description
technical field [0001] The invention relates to a thawing device and a thawing method for aquatic products, in particular to a thawing device and a thawing method for energized heating of aquatic products, belonging to the technical field of thawing aquatic products. Background technique [0002] Thawing is an important factor affecting the quality of frozen aquatic products. In the actual production process, the thawing of aquatic products mainly adopts natural thawing, running water thawing and microwave thawing. Natural thawing has the disadvantages of long thawing time, material surface is easy to dry, discoloration, and serious microbial contamination; flowing water thawing has the disadvantages of large water consumption; microwave thawing has the disadvantages of large loss of nutrients, and there are uneven temperature distribution and local overheating And so on. [0003] How to provide a novel thawing device to overcome the above-mentioned technical problems has ...
Claims
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IPC IPC(8): A23B4/07
CPCA23B4/07
Inventor 欧阳杰倪锦张军文谈佳玉沈建徐文其傅润泽
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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