Refrigerator refrigeration pipe automatic cleaning device and method

Abstract

The invention discloses an automatic refrigerator refrigerating tube cleaning device and method. The cleaning device comprises a cleaning device body and a control terminal. The cleaning device body comprises a cleaning pipeline communicating with a refrigerator capillary tube, a liquid storage tank and a nitrogen source. The control terminal comprises an industrial personal computer, a data collecting unit and a motor module, resources are saved, and cleaning reaches the standard. The method comprises the steps that firstly, the refrigerator capillary tube is installed, and the air tightness of the cleaning device body is checked; secondly, the control terminal is initialized; thirdly, the initial PH value of liquid in the refrigerator capillary tube is obtained, and whether the initial PH value is neutral or not is judged; fourthly, the initial PH value of the liquid in the refrigerator capillary tube is neutralized; fifthly, waste liquid in the cleaning device body is emptied; sixthly, residual waste liquid in the cleaning device body is removed; seventhly, whether the real-time PH value of the liquid in the cleaning pipeline is neutral or not is judged; eighthly, the liquid in the pipeline is emptied; and ninthly, the refrigerator capillary tube is dried. According to the automatic refrigerator refrigerating tube cleaning device and method, the cost for replacing the refrigerator capillary tube is reduced, the cleaning method is flexible and changeable, dryness in the tube is ensured, and the blockage probability is reduced.

Description

technical field [0001] The invention belongs to the technical field of cleaning refrigeration pipes of refrigerators, and in particular relates to an automatic cleaning device and method for refrigeration pipes of refrigerators. Background technique [0002] The blockage of the refrigeration pipeline is a common fault in refrigerator repair work, which will lead to abnormal refrigeration of the refrigerator or poor cooling effect despite refrigeration. The cause of the blockage of the refrigeration pipeline is that the refrigeration system has moisture and refrigerated oil and other sundries to form carbon deposits or poor welding, resulting in the peeling off of the inner wall of the pipeline. The sundries that are not cleaned before the system is assembled and welded or the refrigeration oil dissolved in the R12 refrigerant are caused by the wax deposition at the position of the capillary tube as the refrigerant circulates. The blockage fault of the refrigeration system i...

AI Technical Summary

Problems solved by technology

The blockage fault of the refrigeration system is divided into two types: dirty blockage and ice blockage. The dirty blockage of the refrigerator’s refrigeration pipeline is caused by uncleanness in the refrigeration system, resulting in dirty capillary tubes. After the refrigeration system is blocked, the refrigerant entering the evaporator is insufficient or the refrigerant Accumulated on the high-pressure side and cannot circulate; the ice blockage of the refrigeration pipeline of the refrigerator is due to the excessive moisture in the refrigeration system. When the water circulates to the outlet of the capillary tube, the water freezes at low temperature and blocks the pipeline; the existing refrigerator refrigeration pipeline is dirty and blocked After confirming that the capillary is dirty and blocked, the best way to eliminate it is to replace the capillary with the same length and the same inner diameter, or to clean it with carbon tetrachloride or gasoline, or to burn the dirt by annealing, and then blow it with pressure. To make it unblocked, the method of removing the blockage in this way will increase the cost of replacing the capillary, and the replaced capillary cannot ensure that the inner wall is dry, resulting in an increase in the probability of ice blockage in the refrigeration pipeline, and cleaning with carbon tetrachloride and gasoline requires two different sets. The storage equipment takes up space and is inconvenient; the method of annealing will burn the dirty things, and will leave residues in the small wall of the capillary, resulting in secondary fouling failures. The most important thing is that the inner diameter of the capillary is very small, and the corresponding cleaning equipment Failure to properly control the cleaning fluid pressure can rupture the capillaries, causing irreparable damage

The way to remove the ice blockage of the existing refrigerator refrigeration pipeline is to re-dry and evacuate the refrigeration system. When repairing the ice blockage, it is strictly forbidden to add methanol to the refrigeration system. Although methanol can lower the freezing point, the chemical reaction between methanol and refrigerant will cause Generate hydrochloric acid, hydrofluoric acid, etc., corrode the refrigeration system, and shorten the service life of the refrigerator

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