First, the performance of Freon leakage in freezers
Refrigeration equipment such as refrigerators and freezers usually use refrigerants such as Freon for refrigeration. As a refrigeration medium, if Freon leaks, Then the refrigeration device cannot be cooled, so what is the performance of Freon leakage?
Generally speaking, if the freon in the freezer leaks, the direct manifestation is that the refrigeration effect of the freezer is significantly worse, and the cold air does not feel blowing when you open it. Oil stains; if such a phenomenon occurs, it is determined that the compressor, evaporator, condenser and other components are not faulty after investigation, then it can be preliminarily determined that the freon is leaking.
Second, what is the reason for the leakage of Freon in the refrigerator
Freon will not be consumed during normal use, if it is installed normally and there is no problem with the pipeline , there will be no leakage of Freon in a short period of time. The main reasons for the leakage of Freon in the refrigerator may be:
1. The connecting pipe leaks
The connecting pipe of refrigeration and freezing If there is leakage at the location of the refrigerator, it will cause freon to leak out from here; during maintenance, you can first remove the baffle behind the refrigerator, dig out a small part of the foam in the refrigerator room, and clean up all the iron or aluminum pipes inside, and then adjust the low-pressure After the pipe is pressurized to determine the leak point, replace it with a copper pipe. Professionals are recommended to do it.
2. Problems with refrigerator components
For example, there is a problem with the compressor, evaporator or condenser, which may lead to the leakage of Freon. These parts can be checked by water immersion detection, and the problem parts can be put into the water. If there are bubbles, it means that there is a problem with this part.
3. Excessive use time
If the refrigerator is used for a long time, the product itself will be aged, and the sealing performance will be greatly reduced, and freon may be Leaks out of ageing crevices.
Three, how to detect the leakage of Freon
The emission of Freon into the atmosphere will destroy the ozone layer, so the use of Freon refrigerant is prohibited, but there are still many refrigerants using Freon. Leftover from the refrigerator, in order to avoid harming the environment, it is necessary to ensure that Freon does not leak. The main methods for detecting freon leakage are:
1. Water immersion leak detection
Mostly used for the detection of refrigerator compressors, evaporators, condensers and other parts If it leaks, put the test piece into warm water at about 50°C, and carefully observe whether there are bubbles. If there are bubbles, it means that the test piece is leaking.
2. Soap bubble leak detection
Cut the soap into pieces, soak it in hot water, stir constantly to make it melt, after cooling, use Wipe the inspected area with gauze, and then use soapy water on a clean brush around the inspected area to carefully observe whether there are air bubbles. If bubbles appear, it means there is leakage.
3. Oil pollution leak detection
Carefully observe whether there is oil pollution on the outer wall of the refrigeration system, especially the welding place between the aluminum tube and the copper tube of the evaporator, and the inner wall of the evaporator , Compressor high and low pressure pipe interface, drier filter inlet and outlet interface and other welding parts. If you feel oily stains, it means there is a leak.
4. Instrument leak detection
Mainly use halogen leak detection lamps, electronic halogen leak detectors and other equipment for inspection, because the freon refrigerant is made of halogen. The composition of group elements can be used to accurately determine the leak location by using a halogen leak detector.
When checking the Freon leak location, you can first use the first three methods to determine the large leak location, and then use professional instruments to check to find the exact location, and then repair or replace it.
