Ultra-low temperature freezer

Abstract

The invention discloses an ultra-low temperature freezer, which comprises a shell, a liner, an outer door and an inner door. The inner door and the outer door adopt foamed solid door bodies. At least two sealing strips are arranged on the outer door and the inner door. The mouth of the liner is connected with the shell through a freezer mouth connecting structure. Reinforcing iron is embedded into the freezer mouth connecting structure. The freezer mouth connecting structure is made of a nonmetallic material. Since the inner door is made of polyester in a foaming way and the internal part of the inner door is solid, the inner door is not deformed after the product refrigerates and the cold loss is fewer; since at least two sealing strips are arranged on each of the inner door and the outer door, the entire door body is provided with at least four sealing strips to multilaterally seal the freezer and the cold loss is limited to the utmost extent; and since the freezer mouth connecting structure made of the nonmetallic material is arranged between the shell and the liner, metal connection does not exist between the shell and the liner, the cold bridge is cut off, the cold in the freezer is effectively prevented from being lost through heat conduction of metal and the energy consumption is reduced. The ultra-low temperature freezer has the advantages of simple structure, high cold insulating performance, small cold conduction coefficient, small cold loss and good cold storage effect.

Description

Technical field [0001] The invention relates to the field of low-temperature refrigeration, and in particular to an ultra-low temperature refrigerator. Background technique [0002] Ultra-low temperature freezer (Ultra-1ow temperature freezer) is also called ultra-low temperature storage box, ultra-low temperature freezer, ultra-low temperature storage box, etc. The energy-saving insulation of ultra-low temperature freezer is very important, because the ultra-low temperature freezer itself has large power and energy consumption, so energy saving is the first solution The problem. [0003] In the current medical industry, the ultra-low temperature products are sealed and insulated through the inner door and the outer door, and there are sealing strips between the box body and the door body for sealing, so that the product is insulated as a whole. However, the current thermal insulation has the following problems: First, the inner door adopts a single-layer structure or an internal ...

AI Technical Summary

Problems solved by technology

However, the current thermal insulation has the following problems: First, the inner door adopts a single-layer structure or an internal hollow structure without thermal insulation or foaming structure. After the product is cooled, the inner door is easily deformed, and the cooling capacity is lost through the deformed gap; second. 1. The inner door sealing strip and the outer door sealing strip have only two seals in total, which does not limit the loss of cooling to the maximum; third, the box and the inner tank are connected by metal, and the cooling is lost through metal heat conduction, and the overall insulation is not good. well, energy consumption

Although this patent sets an inner door in the refrigerator, which can prevent the loss of cold energy inside the refrigerator to a certain extent, the inner door of this patent is only made of transparent plastic material, which is a single-layer door structure. After cooling, the inner door is easily deformed, and the cooling capacity is lost through the deformed gap. Moreover, the inner door with a single-layer structure has poor thermal insulation effect, and it is easy to make the cooling capacity in the inner door exchange heat with the hot air outside, resulting in the loss of cooling capacity. Further reduce the working efficiency of the refrigerator and increase the energy consumption

Moreover, the inner door of this patent does not use a sealing strip to seal the door body, so the cold energy is easily lost from the contact between the door body and the refrigerator box

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