Ultra-low-temperature storage box

Abstract

The invention provides an ultra-low-temperature storage box which comprises a box shell, an inner container and a door assembly. The inner container is arranged in the box shell. The door assembly comprises a door shell and a lining. Heat preservation layer structures are arranged between the door shell and the lining and between the box shell and the inner container respectively. The heat preservation layer structures are formed by compounding foam heat insulation boards, vacuum heat insulation boards and foam heat preservation materials. Each ultra-low-temperature heat preservation layer structure with at least three layers of heat insulation heat preservation materials is adopted in the storage box, the thickness of each insulation layer is reduced, the mass of a product is decreased, the heat preservation effect is improved, and meanwhile, the vacuum heat insulation boards are protected.

Description

technical field [0001] The invention relates to the field of low-temperature storage equipment, in particular to an ultra-low temperature storage box. Background technique [0002] The ultra-low temperature preservation box is a kind of refrigeration equipment that reduces the temperature inside the preservation box to -86 degrees through the refrigeration system. Foam insulation and vacuum insulation panels. [0003] But there is following shortcoming in above-mentioned technical scheme: [0004] 1. Since this equipment is used for ultra-low temperature refrigeration equipment, in order to effectively maintain the temperature, when the foam insulation material is used alone, the foam insulation material layer is generally made thicker, which highlights that the equipment is bulky and inflexible, and the weight of the door body increases. It is easy to cause the door body to sag. [0005] 2. When the foam insulation material is used alone, the insulation performance is po...

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Problems solved by technology

[0005] 2. When the foam insulation material is used alone, the insulation performance is poor, resulting in frequent startups of the refrigeration system and high power consumption

[0006] 3. Use foam insulation materials and vacuum insulation panels to form an insulation layer to maintain the internal temperature of the storage chamber. This technical solution can significantly improve the insulation performance, and the formed insulation layer is thinner. However, due to the use of vacuum insulation panels The outer membrane must not be damaged during the process, and the direct contact between the vacuum insulation panel and the metal wall will easily cause damage to the outer membrane, resulting in a greatly reduced or even invalid insulation effect, and the outer membrane damage of the vacuum insulation panel is not easy to be found

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