Passive car refrigerator

Abstract

The invention relates to a passive car refrigerator, which comprises a heat insulation box body and refrigerants contained in the heat insulation box body, wherein the heat insulation box body consists of a plurality of wall parts, each wall part comprises an outer wall layer, an inner wall layer and a vacuum heat insulation plate core layer, in addition, a hard polyurethane foam body is filled between each outer wall layer and the corresponding inner wall layer, in addition, the vacuum heat insulation plate core layers are cladded inside the hard polyurethane foam bodies, the integral density of each hard polyurethane foam body is 35 to 40Kg / m<3>, the compression intensity is 0.10 to 0.15MPa, and the dimension change rate is not higher than 1.0 percent when each hard polyurethane foam body is placed in the air at a temperature between -20 DEG C and 50 DEG C for 24 hours. The passive car refrigerator provided by the invention has the advantages that a direct refrigeration mode of refrigerant vaporization heat absorption and diffusion to the box body is adopted, and a power supply system for supplying power to an electric compressor is not needed, so the capacity rate of the whole car refrigerator can be obviously improved, and the transportation cost is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of refrigerated transportation, more specifically, the invention relates to a passive vehicle-mounted refrigerator. Background technique [0002] Refrigerated transport devices refer to facilities and devices that can maintain a certain low-temperature environment and transport low-temperature goods; refrigerators are the last link in the cold chain. Refrigerated transportation should have good cold insulation and ventilation equipment; the box body should have good heat insulation performance, should have certain ventilation equipment, and can be cleaned; it should have the characteristics of heavy load, large effective volume, light weight, and good applicability. Items that require refrigerated transportation mainly include fresh vegetables, fruits, aquatic products and other foods, and usually include smaller items such as medicines, vaccines, and electronic components. In the prior art, refrigerated t...

AI Technical Summary

Problems solved by technology

In the prior art, refrigerated transportation usually adopts large-scale containers that are refrigerated by electric compressors, that is, commonly referred to as active refrigerated transport boxes; If a full container of goods such as precision electronic components or medicines is transported in an active refrigerated transport box, it is necessary to provide electrical energy to ensure the normal operation of the electric compressor during transportation, especially when transporting small items or requiring different refrigerated temperatures The transportation cost is increased during the transportation of mixed items

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