Circulating air duct of air-cooled medical refrigerator

Abstract

The invention discloses a circulating air duct of an air-cooled medical refrigerator. The circulating air duct comprises a refrigerating air cover and an air duct, wherein the air duct is formed by anair duct plate; an air inlet is formed in the refrigerating air cover, the refrigerating air cover is internally provided with an evaporator, and the side surface of the refrigerating air cover is provided with a top side surface air outlet; the air duct is arranged on the side wall of a storage space and communicates with the refrigerating air cover, a middle front surface air outlet is formed in the middle front surface of the air duct, a middle side surface air outlet is formed in the middle side surface of the air duct, and a bottom air outlet is formed in the bottom of the air duct; anda fan is installed in the refrigerating air cover, wherein an air suction opening of the fan faces and is close to the air inlet of the refrigerating air cover. According to the circulating air duct of air-cooled medical refrigerator, the problem of icing of an draught fan of the fan and the evaporator can be solved; the air circulation speed and the vortex level are increased through reduction ofthe caliber of the air duct; and through the arrangement of multiple air inlets and outlets, and it can be ensured that the uniformity as well the fluctuation of the temperature in a large-volume boxmeet the expectation.

Description

technical field [0001] The invention belongs to the technical field of refrigerators, and in particular relates to a circulating air duct of an air-cooled medical refrigerator. Background technique [0002] Medical refrigerators mainly store drugs, reagents or vaccines that have strict requirements on storage temperature. The temperature control range is 2-8°C, the temperature uniformity in the box is less than 2°C, and the fluctuation is less than 3°C. [0003] The circulating air ducts of medical refrigerators are different due to different cooling methods. The cooling method can be divided into direct cooling and air cooling. [0004] The direct cooling method uses a built-in evaporator in the foam layer ( figure 1 ) or plate evaporator in the box ( figure 2 ) to obtain cooling capacity, through the self-circulation of cold air sinking or the built-in fan in the box for weak air volume circulation, there is no special air duct or the air duct is simple; the direct coo...

AI Technical Summary

Problems solved by technology

The application number is: 200610072064.8, which discloses a circulating air duct for an air-cooled refrigerator. This application uses a full air-cooling circulating air duct, but in this scheme, the fan sucks air from the evaporator, and the air outlet direction points to the back of the box, taking away The cooling capacity of the evaporator is relatively small, which will easily cause the evaporator to freeze and block the air circulation. The temperature uniformity and fluctuation in the box are relatively large, and the temperature control level is weak; It will cause the fan motor to freeze and affect the rotation operation, and the failure rate is high; the air outlet is single, the temperature uniformity and fluctuation of each point in the box are poor, and the specified temperature cannot be reached; this patent does not clarify the effect of the change of the air duct diameter on the circulating wind speed and temperature uniformity Impact

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