Vacuum thermal insulation house body used for ultralow temperature refrigeration house

Abstract

The invention discloses a vacuum thermal insulation house body used for an ultralow temperature refrigeration house. The house body used for the ultralow temperature refrigeration house is constituted by a vacuum composite structure made of high-strength stainless steel so that the weight of a space enclosing structure can be reduced, the thermal insulation performance and the operation stability of a refrigeration system can be improved, and the operation cost of the refrigeration house can be reduced. The house body is composed of enclosing barriers, a top house plate and a bottom house plate, and the enclosing barriers are composed of a front house enclosing plate, a left house enclosing plate, a right house enclosing plate and a rear house enclosing plate. The front house enclosing plate, the left house enclosing plate, the right house enclosing plate, the rear house enclosing plate and the top house plate are each a composite house plate which is composed of inner layer rigid polyurethane plates, an intermediate stainless steel vacuum layer and outer layer rigid polyurethane plates, vacuuming holes are formed in each intermediate stainless steel vacuum layer, high-strength supporting insulating rods are arranged in each intermediate stainless steel vacuum layer, and the intermediate stainless steel vacuum layer and the inner layer rigid polyurethane plates of the top house plate are provided with air-cooled evaporator mounting holes; the bottom house plate is composed of thin-layer reinforced concrete slabs at the upper layer and rigid polyurethane plates at the lower layer.

Description

technical field [0001] The invention relates to an ultra-low temperature cold storage, in particular to a vacuum heat insulation storage body used for the ultra-low temperature cold storage. Background technique [0002] The ultra-low temperature cold storage is used in special occasions such as low-temperature medical treatment, low-temperature storage, and low-temperature test environment. The temperature difference between the inside and outside of the storage can reach more than 150°C. [0003] Traditional cold storage boards use heat insulating materials such as rigid polyurethane boards. The general thermal conductivity is 0.024W / (m k). Satisfy the principles of no condensation on the surface and less than a certain value of heat flow per unit area. At the same time, the existing process cannot produce a library board with sufficient thickness. [0004] At present, simply using the traditional storage plate structure will cause serious surface condensation on the oute...

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Problems solved by technology

[0003] Traditional cold storage boards use heat insulating materials such as rigid polyurethane boards. The general thermal conductivity is 0.024W / (m k). Satisfy the principle of no condensation on the surface and the heat flow per unit area is less than a certain value. At the same time, the existing process cannot produce a library board with sufficient thickness

[0004] At present, simply using the traditional storage plate structure will cause serious surface condensation on the outer surface of the enclosure structure, which will greatly increase the loss of cooling capacity and increase the operating cost of the refrigeration system

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