supermarket refrigerated showcase » article > display refrigerator > display cases The influence of airtightness
display cases The influence of airtightness
display cases The influence of airtightness
display cases The refrigerant in the refrigeration device has a strong permeability. If the device is not tight, it will cause a large amount of refrigerant leakage and affect the refrigeration device normal work. At the same time, some refrigerants are also toxic, such as ammonia, which is harmful to the human body after leakage: Although Freon is non-toxic, when its leakage exceeds 30% (bulk density) in the air, it will cause suffocation shock. In addition, if air penetrates into the system, the display cases will not work properly. In order to eliminate loopholes and ensure safe production and normal operation of the device, air tightness tests must be conducted on the installed or overhauled refrigeration devices. The air tightness test is performed after the pressure test of the main components of the refrigeration device and the blow-off of the system are completed. It is an extremely important link for checking the quality of installation and repair. The so-called pressure test refers to the maximum pressure test of liquids such as water or oil for refrigeration equipment (such as condensers, accumulators, compressor cylinders, evaporators, etc.). Generally, the single-piece pressure test is performed by the manufacturer. No need to redo. The air tightness test of refrigeration equipment includes three procedures: pressure leak test, vacuum leak test and refrigerant leak test.
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