Non-freezing liquid concentration and purification device

Abstract

The invention relates to a non-freezing liquid concentration and purification device. The device comprises a box body, a liquid storage unit arranged at the bottom of the box body, a spraying unit and a heat exchange unit which are arranged above the liquid storage unit, a baffle arranged between the spraying unit and the heat exchange unit, an exhaust unit arranged at the top of the box body, and a liquid conveying unit, the spraying unit and the heat exchange unit are separated through the baffle, the air exhaust unit is connected with the heat exchange unit, and the liquid conveying unit is connected with the liquid storage unit and the spraying unit. Automation of purification of the non-freezing liquid and defrosting of an ultralow-temperature refrigeration house are achieved, the defrosting efficiency is improved, the defrosting effect is optimized, and therefore the production efficiency is improved, and the labor cost and the time cost are saved.

Description

technical field [0001] The invention relates to the field of antifreeze purification, in particular to an antifreeze concentration and purification device. Background technique [0002] At present, we have rich experience in the defrosting of air conditioners in cold storage at around -20 degrees, generally electric defrosting, water defrosting or hot gas defrosting. Small air coolers usually use electric heating to defrost, and large cold storage air coolers mostly use hot gas defrosting. Because the freezing point of water is 0 degrees, icicles are easy to form in the storage, etc., usually not used, but in ultra-low temperature cold storage (-45 In terms of defrosting, if electric defrosting is used, on the one hand, due to the low temperature of the evaporator, the power of electric defrosting is large, and the power consumption is large; on the other hand, the power of electric heating is large, which will cause fluctuations in the storage temperature; Frost, when the ...

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Problems solved by technology

Small air coolers usually use electric heating to defrost, and large cold storage air coolers mostly use hot gas defrosting. Because the freezing point of water is 0 degrees, icicles are easy to form in the storage, etc., usually not used, but in ultra-low temperature cold storage (-45 In terms of defrosting, if electric defrosting is used, on the one hand, due to the low temperature of the evaporator, the power of electric defrosting is large, and the power consumption is large; on the other hand, the power of electric heating is large, which will cause fluctuations in the storage temperature; Frost, when the hot gas enters the heat exchange tube of the evaporator, it can melt the ice on the surface of the heat exchange tube and its surroundings, but because the temperature in the storage is too low, the heated and melted water may form icicles before it can flow down, so This is not a particularly suitable method; if antifreeze is used for flushing, the frost layer on the surface of the fin surface of the air cooler will be mixed into the antifreeze after the antifreeze aqueous solution has gone through several times of frosting process. In the liquid solution, the antifreeze solution is diluted, causing the freezing point to rise, so it is necessary to periodically separate excess water from the antifreeze solution to maintain the concentration and freezing point of the solution

[0003] In the process of frost flushing, the high-concentration antifreeze liquid washes away the frost layer on the surface of the fins, and the frost layer attached to the heat exchange tube and the surface of the fins is washed away. As the antifreeze liquid enters the water collecting pan, the antifreeze solution is Dilution, the concentration will be lower and lower, the concentration of antifreeze will decrease and the freezing point will rise, which is not conducive to the circulation of defrosting

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