Air conditioner aluminum fin weak alkaline cleaner and cleaning method

Abstract

The invention discloses an air conditioner aluminum fin weak alkaline cleaner which can evenly and thoroughly remove dirt, cannot generate high corrosion on aluminum fins, saves time and labor, and islow in cost, safe, reliable and free of pollution. The air conditioner aluminum fin weak alkaline cleaner comprises raw materials including, by mass percent, 1%-5% of citric acid, 0.1%-15% of sodiummetasilicate pentahydrate, 0.1%-5% of sodium carbonate, 0.1%-10% of sodium gluconate, 0.5%-20% of a non-ionic surface active agent, 0.5%-10% of a cationic surface active agent, 0.5%-15% of an oxygen bearing solvent and the balance water; and the pH value is 10.0-10.5. The cleaning method includes the following steps that the aluminum fins on an air conditioner in a train are detached; the cleaneris prepared into an aqueous solution according to the mass percent being 10%-15%, the detached aluminum fins are hoisted into a cleaning tank, soaking is carried out for 30 min at the normal temperature, ultrasonic cleaning is started to last for 10 min-30 min; the aluminum fins of the air conditioner are placed into a washing tank, a water torch is used for spraying and cleaning the surfaces of gaps of the aluminum fins of the air conditioner; and the aluminum fins are placed to be dried.

Description

technical field [0001] The invention relates to a cleaning agent and a cleaning method for cleaning an air conditioner, especially a cleaning agent that can remove dirt evenly and completely without causing strong corrosion to aluminum fins; it saves time and effort, is low in cost, is safe and reliable, and has no pollution Weak alkaline cleaning agent and cleaning method for air-conditioning aluminum fins. Background technique [0002] The air conditioner usually needs to be overhauled after running for a period of time, for example, the air conditioner needs to be overhauled after the train runs 20,000 to 30,000 kilometers. During maintenance, it is necessary to thoroughly clean the dirt on the surface of the aluminum fins in the air conditioner to improve the heat exchange capacity of the aluminum fins, thereby improving the heating and cooling efficiency of the air conditioner and prolonging the service life of the compressor. Parts are cleaned. At present, there are ...

AI Technical Summary

Problems solved by technology

① Strong alkaline cleaning agent has a pungent smell when sprayed, which pollutes the environment of the operation site; ② Strong alkaline cleaning agent is extremely corrosive to human skin and easily burns the operator's skin; ③ Strong alkaline cleaning agent has a strong impact on paint The coating is highly corrosive, often causing paint discoloration, peeling, peeling, etc.; ④ strong alkaline cleaning agent has obvious corrosion on aluminum fins, and most aluminum fins will become thinner and brittle after four times of cleaning ,need to be updated

[0004] 2. The pickling method generally uses ultrasonic cleaning, and the cleaning effect is also different due to the different acidic additives used in the cleaning agent.

Some cleaning agents have a pungent smell, affecting the on-site operating environment; some produce acid mist, causing corrosion of workshop machinery and equipment; some are too corrosive, causing corrosion of stainless steel, copper pipes and ultrasonic cleaning tanks attached to the air conditioner