Discussion on dust removal of automobile air conditioning

The automobile evaporator is installed under the dashboard in the car, and the internal and external air inlets are close to the passenger seat. When the air conditioner is turned on, the intake air inside and outside the car will pass through the evaporator for refrigeration, and the evaporator will gather the moisture in the air on the evaporator surface, and at the same time, the dust and small sundries inside and outside the car will be adsorbed on the very wet evaporator surface with the tuyere. If it is used for a long time (about one year), these dirt will not only block the gap of the radiator in the evaporator, reduce the air flow and reduce the refrigeration effect, but more importantly, a large number of sundries will accumulate on the air-conditioning evaporator, causing the continuous breeding of bacteria and germs, and spread to the whole carriage through the air-conditioning pipeline system, which will easily lead to infectious diseases such as bronchitis and asthma, seriously endangering the healthy life of you and your family.

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If the air conditioning system is not maintained and cleaned in the whole winter and spring, it will inevitably smell when the air conditioner is turned on again. This is because the car sucks a lot of dust and dirt from the air inlet of the air conditioner during driving, and it is adsorbed in the evaporation box and air conditioning system, which breeds a lot of bacteria, molds and mites. Being in this environment for a long time will make people feel dizzy, nauseous and even induce respiratory diseases, so it is necessary to clean the air conditioner.

Timely cleaning to improve refrigeration effect.

To keep the air conditioning system in good working condition, especially in summer, air conditioning maintenance has become a compulsory course for car owners. Li Wenxuan said that car owners should learn to judge the operation of the air conditioning system and deal with it in time to prevent minor injuries.

The air inlet of the car air conditioner has an air conditioner filter. When cleaning, take out the filter device, open the doors and windows, adjust the cold air to the highest grade, spray the air conditioner cleaning agent into the air inlet, and close the air conditioner outlet at the same time to prevent the cleaning agent from flowing out during operation. Start the car, let the cleaning agent circulate in the air conditioning system, and ensure that the cleaning agent circulates to all channels of the air conditioning system, which can effectively clean the system, kill bacteria and output fresh air. After cleaning, the dirt in the air conditioning system will flow out of the air conditioning pipeline system located in the chassis with the cleaning agent. Cleaning the air conditioning system can not only improve the refrigeration effect, but also effectively extend the service life of the air conditioner. Li Wenxuan, manager of after-sales service department of Dongfeng Nissan ZOJE franchise store, pointed out that extending the service life of air conditioners cannot be achieved by cleaning. Car owners should learn how to detect the operation of air conditioners and avoid all kinds of misunderstandings, so as to ensure the good operation of air conditioners and prolong their service life.

Check the compressor belt.

According to experts, to prolong the service life of air conditioners, it is necessary to regularly check whether the compressor belt is in good condition. If the contact side between the belt surface and the pulley groove is bright and there is a "squeaking" sound when starting the air conditioner, it means that the belt is seriously slipping, and the belt and pulley should be replaced; If the belt is too loose, it should be adjusted, otherwise it will easily lead to poor refrigeration of the air conditioning system. In addition, check the hoses and pipe joints of the air conditioning system for oil pollution. If leakage is found, consult the maintenance office in time to solve it.

Clean the condenser frequently.

Some car owners often flush the condenser with water pipes when using air conditioners in summer, which is quite correct. Because the cleaning of automobile condenser surface is easy to radiate heat energy, cleaning the condenser surface regularly can greatly improve the refrigeration effect of air conditioning system.

In addition, it is necessary to regularly check whether the refrigerant level in the air conditioning system is normal. There are several ways to check the liquid level, but the most common and simplest method is to check with the peephole (observation window) of the dryer. The glass peephole is usually installed on the cover of the dryer to run the engine and air conditioning system, and observe the flow of refrigerant through the glass peephole. If the air conditioner works normally, you should see clear frozen liquid constantly flowing out of the peephole, occasionally with some small bubbles at high temperature. You can see these small bubbles when you turn off the air conditioner system.

Check whether the coolant is sufficient. It can be estimated by the temperature difference between the inlet pipeline and the outlet pipeline of the induction dryer, and can also be detected by the manifold pressure gauge.

Finally, always clean the dust and dirt in the air outlet and cab. This is not only beneficial to the beauty of the car, but also to the health of the driver and passengers.