Manufacturing method of ultra-low temperature refrigerator sealing device

1. The utility model relates to the field of ultra-low temperature refrigerators, and more specifically, to a sealing device for ultra-low temperature refrigerators.

Background technique:

2. Ultra-low temperature refrigerators, also known as ultra-low temperature freezers and ultra-low temperature storage boxes, can be roughly divided into: suitable for the preservation of tuna, electronic devices, low-temperature tests of special materials and preservation of plasma, biological materials, vaccines, reagents, biological products, and chemical reagents , Bacteria, biological samples, etc. are stored at low temperatures. Ultra-low temperature explosion-proof refrigerators generally have horizontal and vertical cabinets. The inner cabinet is generally divided into multiple bearing layers. Each layer is designed with an inner door that can be opened and The box body is generally formed by directly splicing five cold-rolled steel plates with each other. There are 60mm and 80mm polyurethane foam materials inside and outside the box. The thermostat is a platinum resistance sensor, which is used for temperature control and cooling. Currently, environmentally-friendly refrigerants are generally used to meet environmental protection requirements.

3. In the prior art, after the refrigerator is opened, if the sealing mechanism is damaged, the refrigerator will leak cold, resulting in the failure to reach the set temperature. Therefore, it needs to be replaced. However, the traditional replacement method takes too long, which will affect the internal storage of items. quality.

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