How to clean and maintain car air conditioners
Abstract: When the car air conditioner is running, 80% of the tiny dust and bacteria in the air will pass through the filter and enter the inside of the air conditioner, and then stick to the condensed water and block the evaporator. This will not only affect the air conditioner Cooling and heat dissipation can also nourish bacteria. Therefore, everyone should pay attention to the cleaning of passenger car air conditioners. Below, the editor will teach you how to clean and maintain car air conditioners. Maintenance of passenger car air conditioners. How to clean and maintain car air conditioners. Use, maintenance and upkeep of passenger car air conditioners
Use, maintenance and upkeep of air conditioners
1. Choose the appropriate air conditioner temperature. Of course, in the summer, many people like to keep the temperature very low. As everyone knows, when the temperature is adjusted too low, it will affect your health, so the air conditioner temperature must be adjusted appropriately. The most suitable temperature for the human body is 20°C to 25°C. If it exceeds 28°C, people will feel hot. When the temperature is lower than 14℃, people will feel cold. Therefore, the air conditioner should control the temperature inside the car between 18°C and 25°C. Too low a temperature can easily make people sick.
2. Start the internal circulation immediately after entering the car in summer. When the car is parked under the scorching sun for a long time, some car owners like to turn on the air conditioner and start the internal circulation as soon as they start the car, thinking that this can make the temperature inside the car drop faster. But because the temperature inside the car is higher than the temperature outside the car, this is not effective. When you first enter the car, you should open the windows for ventilation and turn on the external circulation to exhaust the hot air. After the temperature inside the cabin drops, switch to internal circulation.
3. People know that air conditioners should be used in a fully enclosed state. The same is true for car air conditioners. If the doors and windows are not closed tightly during use, the cooling effect will be poor and fuel will be wasted.
4. The direction of the air outlet can be adjusted at will. Some car owners do not pay attention to adjusting the direction of the air conditioner when using the air conditioner, which is not conducive to the best effect of the air conditioner. According to the principle that cold air sinks and hot air rises, the correct approach should be to turn the air outlet upward when turning on the air conditioner and downward when turning on the heating.
5. Leave the air conditioner on for a long time. Some car owners often turn on the air conditioner after getting in the car. However, using the air conditioner for a long time will cause excessive pressure on the condenser, which will cause losses to the refrigeration system, because the air conditioner is a heavy burden on the engine, and the engine itself is a source of heat. body, not to mention in hot weather. Some small-displacement cars may even experience water boiling in this situation, which affects driving and reduces air conditioning efficiency. Therefore, you should not use the air conditioner for too long each time. If the temperature inside the car has reached a comfortable temperature, you can turn off the air conditioner and turn it on again after a while.
6. Do not smoke in the car with the air conditioner on. Due to smoking in the car, the smoke cannot be discharged at once, which irritates the eyes and respiratory system and is not good for health. If you smoke, the air conditioning ventilation control should be adjusted to the "exhaust" position to allow the smoke in the car to be discharged out of the car.
7. Do not rest or sleep for a long time in a parked car with the air conditioner on. Because the car is well sealed, the ventilation in the cabin is poor when the vehicle is stopped. If you rest or sleep with the air conditioner on at this time, it is likely that carbon monoxide gas emitted by the engine will leak into the car, causing poisoning or even death.
8. Try not to use air conditioning when driving at low speeds. When encountering traffic jams while driving, do not run the engine at a higher speed in order to improve the efficiency of the air conditioner, as this will adversely affect the service life of the engine and air conditioner compressor.
9. Turn off the flame first and then turn off the air conditioner. Some car owners often remember to turn off the air conditioner after turning off the engine. This is harmful to the engine because the engine will start with the load of the air conditioner when the vehicle is started next time. Such a high load will damage the engine. Therefore, the air conditioner should be turned off before turning off the engine every time after parking. The air conditioner should also be turned on after the vehicle is started for two or three minutes and the engine is lubricated.
Air conditioning maintenance
Replace dust filter
Routine air conditioning system cleaning includes replacing the filter element, using detergent and disassembling and cleaning. Replacing the dust filter is the simplest way. It is low-cost but can keep the air intake unobstructed. Car owners with a little mechanical knowledge can clean it by themselves. The dust filter on most small cars is located under the windshield, covered by a drain channel.
When replacing the dust filter, you can first open the engine cover, remove the clip that fixes the water flow channel, remove the water channel, and then you can see the dust filter. If the dust filter has not been used for a long time, you can blow it clean with high-pressure air; if it is clogged, just remove it and replace it with an original dust filter, and then install it as it is.
Sterilization of external circulation air ducts
There are many cleaning agents on the market for cleaning air conditioning ducts, and car owners can choose and buy them themselves. Remove the dust filter, start the vehicle, turn on the air conditioner and put the air conditioner in the external circulation block, spray the foamy cleaning agent to the dust filter, the external circulation air of the air conditioner will suck the cleaning agent into the air duct, and affect the air duct. , the decomposition of the air conditioner evaporator and heater water tank can be used to remove bacteria and odors. The dirt will turn into liquid and flow out from the water outlet of the air conditioner. After the cleaning work is completed, it is best to replace the dust filter, and fresh air will blow out of the air outlet in the car.
Send it to a repair station for cleaning
Replace the dust filter and use cleaning agent to clean the air duct. Cleaning is done from the outside of the air conditioning system. If the air volume at the air outlet is still very small after cleaning, If the odor is not completely eliminated, you have to go to a repair shop to remove the air box, replace the evaporator, and manually clean the casing of the air conditioner heating device. However, the airbox is usually installed under the dashboard of the car, which requires a lot of maintenance work and high costs.
Use ozone for sterilization
Use high-concentration ozone water to sterilize automobile air conditioners. It is understood that ozone water is one of the strongest oxidants currently available. It can easily oxidize and denature the protein shells of bacteria and fungi, quickly kill bacterial propagules and spores, and remove Escherichia coli, Staphylococcus aureus, hepatitis virus, Cold viruses are oxidatively decomposed. Ozone is active and can be reduced to oxygen at room temperature. It is currently the most environmentally friendly sterilizing substance.
Guidelines for Cleaning and Preventing Bacteria of Passenger Car Air Conditioners
Guidelines for Cleaning and Preventing Bacteria of Car Air Conditioners in Summer
In summer, it is the season of frequent use of car air conditioners. It is very necessary to perform a cleaning project of the car air conditioner before the car air conditioner to avoid malfunction of the air conditioner and prevent the growth of bacteria and viruses in the air conditioner, which may seriously harm the health of the car owner and affect normal use. Liangche will recommend car air conditioner cleaning and antibacterial strategies to car owners in summer.
Car air conditioners are prone to accumulating bacteria
Car air conditioner evaporators and fans have been closed and dark for a long time, and the internal environment is high and humid. After impurities, dust, bacteria, and viruses in the air enter the air conditioner, they stick to the condensed water and block the evaporator and other components. Over time, a large amount of dirt, nicotine, mold, fungi, etc. adhere to the surface.
This situation is mainly caused by the structural characteristics of the air conditioning system itself. The air conditioning system mainly uses fluorine or 134A as the medium, and achieves the purpose of refrigeration through the change of system pressure. It consists of an evaporation box, an expansion valve, a compressor, a blower, a condenser, a drying tank and pipelines. When the air conditioning system is working normally, the evaporator box works in a cold environment, and water will be produced when it encounters relatively hot air from the outside. This is also the reason why water pipes are designed in the evaporator box structure; the humid environment of the evaporator box and ventilation ducts and Dust on surfaces provides a breeding ground for mold and fungi to grow.
It is easy to inhale germs in a closed and small space
Molds and fungi will quickly multiply into mold clusters and fungus clusters, producing biological putrid odors. These odors will be released as the air conditioner is turned on. Mixed in the air-conditioning, it pollutes the entire interior of the car and often makes drivers and passengers feel uncomfortable. People with allergies may feel it more deeply.
After a long winter and spring, when we start to use the car air conditioner again in the summer, harmful germs will be blown out from the air conditioner and inhaled into the human body in the closed and small space in the car. It will lead to various symptoms of "car air-conditioning disease"; improving the air in the car and increasing the air-conditioning refrigeration efficiency is something every driver should pay attention to.
Aerosol cleaning of air conditioners keeps germs away
Summer is coming. Before using the air conditioner, it is recommended that car owners clean the air conditioner pipelines and evaporation boxes. The air conditioner cleaning methods on the market include foam type and Spray type.
The foam cleaning method is to spray the foam cleaning agent directly into the air conditioning pipeline and blow the foam to adhere to the dust for cleaning. However, it is difficult for a lot of dirt to completely adhere, and the foam adheres to the pipe wall. It is easy to adhere to dust and cause secondary pollution.
Another spray type is the car air conditioner-free cleaning technology, which sprays the liquid onto the air conditioning ducts in the car. The advantage of using this method is that it can be blown evenly wherever the blower wind can reach. Spray the liquid to quickly remove dust, grease, mold and other contaminants adhering to air conditioner evaporators, filters, condensers, pipes and other components to achieve the purpose of cleaning, sterilization and antibacterial, avoid secondary pollution, and form a protective film Inhibits mold regeneration. The important thing is to form a good car use and maintenance habit. The combination of prevention and treatment will have the best effect.
The harm of car air conditioner odor
The odor of car air conditioners is not just unpleasant. It has been proved through a large number of experiments that water vapor adhering to the air conditioner evaporator will produce at least three kinds of harmful effects on the human body. Molds that are harmful to health: Aspergillus, P. vaginalis and Penicillium. Although there are currently very few complaints about car air conditioners around us, medical tests have shown that these molds may be harmful to the human body in seven aspects: causing headaches, fever, sudden sore throat, tonsil infection, and asthma. Adverse reactions such as flu symptoms, dermatitis, and difficulty in wound healing.