Food freezer performance test device

Abstract

The invention discloses a food freezer performance test device. The food freezer performance test device comprises a box body, a box body top cover, an air processing unit, a main air supply pipe, an air mixing device, an air supply pore plate and an air return pore plate, wherein the air supply pore plate and the air return pore plate are arranged inside the box body in parallel, and the box body is internally divided by the air supply pore plate and the air return pore plate into three areas, i.e. an air supply static pressure space and an air return static pressure space on two sides, as well as a test environmental space between the air supply static pressure space and the air return static pressure space; and the air processing unit is arranged in the air return static pressure space and is communicated with the air supply static pressure space through the main air supply pipe, and the air mixing device is arranged in the main air supply pipe. According to the food freezer performance test device, the air distribution is improved by adopting a parallel air supply way, so that the air flow as well as the temperature and humidity inside a test room can be uniform and stable in the test, a normal working environment of a food freezer can be actually simulated, and the temperature, humidity and air distribution inside the test room can meet the requirement of JB / T7244-1994 food freezer series standard.

Description

technical field [0001] The invention belongs to the field of building environment and equipment engineering, and relates to a performance testing device for a food refrigerator. Background technique [0002] The food freezer test room device is widely used in the test of the freezing capacity, cooling speed, power consumption and other performance of the food freezer. The test room is required to be able to truly simulate the temperature, humidity and airflow organization of the actual use environment of the food freezer, so as to conduct various performance tests of the food freezer, and to monitor and analyze the temperature parameters in the food freezer in real time. The closer the test room can simulate the test temperature, humidity and airflow distribution to the actual use environment of the freezer, the more accurate the test results will be. [0003] Utility model patent CN 201555720 U A performance test room system for refrigerators and freezers. The test room is...

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 air supply temperature, humidity and air distribution in the existing test room to a certain extent, but it does not Does not structurally improve the overall distribution of airflow across the test environment

[0006] Utility model patent CN 201944954 U, the invention adopts the air supply and return form of side air supply and bottom return air, and the air enters the environmental test through the air supply orifices on both sides The back of the chamber is opposed and mixed with each other, which makes the air flow turbulent in the local area, which cannot guarantee the stability of the temperature and humidity of the airflow and the stability of the airflow organization. Stability affects the accuracy of the test. At the same time, the airflow organization between the test environments cannot well meet the requirements of the airflow direction in the JB / T 7244-1994 "Food Freezer" series of standards

[0008] Invention patent CN 102434952 A is suitable for solving the problem of uniformity of air supply in a large area, large space, and high-precision environment. Due to the relatively small size of the food refrigerator laboratory system, the space and The area is relatively small, therefore, the above invention patent is not applicable to the food freezer laboratory system; secondly, the above invention patent does not carry out quantitative calculations on the static pressure chamber, and to meet the requirements of uniformity and accuracy, it is necessary to equip a relatively large Large static pressure chamber, which is the difference between the above-mentioned invention and the food freezer laboratory system; secondly, each hole on the orifice plate of the above-mentioned invention patent is fixed with a conical boss. Low height and due to flow resistance, conical bosses are not required

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