An air handling system for a freezer performance test device

Abstract

The invention relates to an air processing system for a freezing and refrigerating cabinet performance testing device. The air processing system comprises a unit tank body arranged in a testing room. A return air inlet which is used for allowing air to enter the unit tank body and provided with a primary filter screen is formed in the side face of the unit tank body. A first evaporator, a second evaporator, a rear electric heater, a dry steam humidifying spray pipe and a fan which are arranged in the air flowing direction are arranged in the unit tank body. The first evaporator and a first compression condensing unit are used for cooling and dehumidifying air with the temperature being -35-0 DEG C. The second evaporator and a second compression condensing unit are used for cooling and dehumidifying air with the temperature being 0-50 DEG C. A bypass air valve used for directly discharging part of air is arranged on the unit tank body. The air processing system can process air in a large temperature range, corresponding refrigerating circulating systems can be selectively started, equipment damage caused by too high pressure of the refrigerating circulating systems can be avoided, and the safety of the refrigerating circulating system is improved. Through the air processing system, thorough dehumidifying can be conducted, and the temperature and humidity requirements of tested units can be accurately met.

Description

technical field [0001] The invention belongs to the technical field of performance testing of refrigerating cabinet equipment, and in particular relates to an air treatment system for a performance testing device of a refrigerating cabinet. Background technique [0002] The problem of fresh and fruit storage has led to a large number of freezers being put into use. Therefore, the performance testing device of the freezer also needs to be developed urgently. The performance test device of the freezer is used to simulate the temperature, humidity and airflow in the environment to make it close to the various air conditions in the actual use environment of the freezer, so as to ensure that the freezer can work normally in the actual environment. Invention patent CN103217310A discloses a performance test device for food refrigerators. The device uses air supply orifice plates and air orifice plates to send air in parallel, and uses air supply orifice plates to obtain stable air...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this device is that the refrigeration circuit is not suitable for processing air with a large temperature range in the real environment, and the service life of the refrigeration circuit will be seriously affected after long-term operation.

In addition, the evaporator in this device has a limited dehumidification effect on the air, and it cannot meet the requirements for some working conditions that require deep dehumidification.

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