Defrosting device, ultralow-temperature storage box and defrosting method thereof

Abstract

The invention relates to a defrosting device and belongs to the technical field of low-temperature defrosting. The defrosting device is installed in an ultralow-temperature storage box. The defrosting device comprises a hydrophobic layer, a plurality of ultrasonic transducers arranged in an arrayed mode, a program control system and an ultrasonic generator. The ultralow-temperature storage box comprises a box body inner plate. The side, facing a storage space, of the box body inner plate is coated with the hydrophobic layer, and the ultrasonic transducers generating supersonic vibration are installed on the other side of the box body inner body. The multiple ultrasonic transducers are connected into the program control system in parallel, and the program control system is connected with the ultrasonic generator. The invention further relates to the ultralow-temperature storage box provided with the defrosting device and the defrosting method of the ultralow-temperature storage box. According to the defrosting device, the ultralow-temperature storage box and the defrosting method thereof, frost of the inner plate can be effectively removed, heat-exchange heat resistance between a box body and copper pipes attached to a wall is reduced, and a low-temperature working condition in the box body is maintained; and while the start-stop ratio and energy consumption of a unit are reduced, reliability of the unit is improved, the service life of the unit is prolonged.

Description

technical field [0001] The invention relates to low-temperature defrosting technology, which is used for defrosting low-temperature and ultra-low temperature storage boxes, and avoids temperature fluctuations in the box caused by thermal defrosting. Background technique [0002] In the field of low-temperature and ultra-low temperature storage, frequent opening of the door will cause frost on the inner wall of the box, increasing the heat transfer resistance between the refrigerant in the tube and the air in the box, making it difficult for the box to reach the low temperature condition required for storing items. Therefore, it is necessary to periodically defrost the inner wall of the cabinet. [0003] At present, defrosting in the field of low-temperature storage is mostly manual defrosting or electric heating defrosting, so the temperature fluctuation in the cabinet will inevitably be caused during the defrosting process, thereby affecting the quality of the stored items ...

AI Technical Summary

Problems solved by technology

[0002] In the field of low-temperature and ultra-low temperature storage, frequent opening of the door will cause frost on the inner wall of the box, increasing the heat transfer resistance between the refrigerant in the tube and the air in the box, making it difficult for the box to reach the low temperature condition required for storing items. Therefore, it is necessary to periodically defrost the inner wall of the box

[0003] At present, the defrosting in the field of low-temperature storage is mostly manual defrosting or electric heating defrosting, so the temperature fluctuation in the cabinet will inevitably be caused during the defrosting process, thus affecting the quality of the items stored in the cabinet

If the medical specimens and organs are stored in the box, it may cause the failure of the medical specimens and organs, causing irreparable losses

Secondly, the water formed by defrosting will quickly form secondary freezing after the defrosting is completed, which increases the start-stop ratio of the unit, and even causes the compressor to not stop until it is damaged

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