A performance test device for food refrigerators with parallel air supply

Abstract

The invention discloses a device of a parallel air supply type for testing the performance of a foodstuff refrigerator, and the device comprises a fence structure, a variable cross-section air supply static pressure space, a testing environment space, a variable cross-section air-turn static pressure space, an air processing apparatus, and an air supply header pipe disposed at the upper part of the fence structure. A non-uniform air supply pore plate and a non-uniform air return pore plate, which are arranged vertically, enable the lower space of the air supply header pipe to be sequentially divided into the variable cross-section air supply static pressure space, the testing environment space and the variable cross-section air-turn static pressure space in the direction of an air flow. The air processing apparatus is disposed at an outer side of the variable cross-section air-turn static pressure space. The device improves air distribution through parallel air supply, can guarantee that the air flow and temperature and humidity in in the testing space during testing to be uniform and stable, truly simulates the normal working environment of the foodstuff refrigerator, guarantees that the temperature and humidity and wind speed in the testing space meet the requirements of the JB / T 7244-1994 foodstuff refrigerator series standard.

Description

technical field [0001] The invention belongs to the technical field of building environment and equipment engineering, and relates to a performance testing device for a food refrigerator. Background technique [0002] With the development of social economy, food freezers have become an indispensable part of people's lives, so the test of the performance of the freezer is very important. The present invention is based on simulating the ambient temperature, humidity, illuminance and air flow organization of the food freezer in normal actual use, so as to conduct various performance tests of the food freezer to ensure the normal and efficient operation of the food freezer. The test room simulation can monitor and analyze the temperature parameters in the food freezer in real time. The closer the simulated data is to the actual use environment of the freezer, the more accurate the test results will be. [0003] Utility model patent CN 201555720 U is a performance test room syst...

AI Technical Summary

Problems solved by technology

[0004] The utility model patent CN 201555720 U uses a static pressure plate to solve the problem of uneven temperature and humidity of the air supply and air distribution in the existing test room to a certain extent, but it does not structurally improve the overall distribution of the air flow in the test environment

[0007] The air enters the environmental test room through the air supply orifices on both sides and then counteracts and mixes with each other, which makes the air flow in a local area turbulent, which cannot guarantee the stability of the temperature and humidity of the air flow and the stability of the air flow organization. There is also the problem of uneven air flow, which reduces the test environment. The uniformity and stability of the temperature and humidity of the internal airflow and the airflow organization affect the accuracy of the test. At the same time, the airflow organization between the test environments cannot well meet the requirements for the airflow direction of the JB / T 7244-1994 "Food Freezer" series of standards

Secondly, compared with the existing test room system, the system is relatively complicated, and the air circulation flow resistance is large, so the air handling unit requires a large air supply capacity and consumes a lot of power

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