Use, maintenance and maintenance of air conditioners
1, select the appropriate air conditioning temperature. Of course, in summer, many people like to keep the temperature very low. As we all know, too low temperature adjustment will affect your health, so the temperature adjustment of air conditioner must be appropriate. The most suitable temperature for human body is 20℃ to 25℃. If it exceeds 28℃, people will feel sultry. And below 14℃, people will feel cold. Therefore, the air conditioner should control the temperature inside the car between 18℃ and 25℃. Too low a temperature can easily make people sick.
2. Enter the car in summer and start the internal circulation immediately. Cars are parked in the hot 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 in the compartment drop faster. But because the temperature inside the car is higher than that outside the car, the effect is not good. When you first enter the car, you should first open the window for ventilation and start the external circulation to exhaust all the hot air. After the temperature in the carriage drops, it is replaced by internal circulation.
It is known that air conditioner should be used in a totally enclosed state. The same is true for car air conditioners. If the doors and windows are not tightly closed during use, the refrigeration 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 blowing direction of air conditioner when using air conditioner, which is not conducive to achieving the best effect of air conditioner. According to the principle that the cold air sinks and the hot air rises, the correct way should be that the air outlet is upward when the cold air is turned on and downward when the heating is turned on.
5. Turn on the air conditioner for a long time. Some car owners always turn on the air conditioner after getting on the bus, but using the air conditioner for a long time will make the condenser pressure too high and cause losses to the refrigeration system, because the air conditioner is a heavy burden to the engine, which is itself a heater, not to mention in high temperature weather. In this case, some cars with small displacement even have water boiling, which affects driving and reduces the efficiency of air conditioning. Therefore, it should not be too long to use the air conditioner every time. If the temperature inside the car has reached a comfortable temperature, you can turn off the air conditioner and turn it on later.
6. Don't smoke in the air-conditioned car. Because of smoking in the carriage, the smoke can't be discharged at once, which stimulates the eyes and respiratory system and is not good for the body. If you smoke, you should adjust the air conditioning and ventilation control to the "exhaust" position, so that the smoke in the compartment can be exhausted from the car.
7. Don't rest or sleep for a long time in a parked car with air conditioning. Because of the good sealing inside the car, once the car stops, the ventilation inside the car is poor. If you turn on the air conditioner to rest or sleep at this time, it is likely that the carbon monoxide gas emitted by the engine will leak into the car, leading to poisoning and even death.
8. Try not to turn on the air conditioner when driving at low speed. When encountering traffic jam, don't let the engine run at high speed in order to improve the efficiency of air conditioning, because doing so will adversely affect the service life of the engine and air conditioning compressor.
9. Turn off the fire before turning off the air conditioner. Some car owners often think of turning off the air conditioner after the flameout, which is harmful to the engine, because the engine will start with the load of the air conditioner when the vehicle starts next time, and such a high load will damage the engine. Therefore, after each stop, turn off the air conditioner first and then turn it off. The vehicle starts for two or three minutes, and then turn on the air conditioner after the engine is lubricated.
Maintenance of air conditioner
Replace the dust filter.
Traditional air conditioning system cleaning includes replacing filter element, using cleaner and removing filter element. Replacing the dust filter screen is the simplest method, but it can keep the air inlet unobstructed at low cost, and car owners with a little mechanical knowledge can clean it themselves. The dust filters of most small cars are under the windshield of the car and covered by the running water tank. When replacing the dust filter, you can first open the engine cover, take off the clip that fixes the running water box, and take off the running water box to see the dust filter. If you don't use the dust filter for a long time, you can blow it clean with high-pressure air; If it is blocked, just remove it, replace it with the original dust filter, and then install it as it is.
External circulation air duct sterilization
There are many kinds of cleaning agents used to clean the air duct in the market, and the owner can choose by himself. Remove the dust filter, start the vehicle, turn on the air conditioner, put the air conditioner in the external circulation gear, and spray foam cleaning agent on the dust filter. The circulating air outside the air conditioner will suck the cleaning agent into the air duct, sterilize the decomposition products of the air duct, the evaporator of the air conditioner and the warm air water tank, remove the odor, and the dirt will become liquid and flow out from the air conditioner outlet. After the cleaning work is completed, it is best to replace the dust filter, and the air outlet inside the car will blow out fresh air.
Send it to the maintenance station for cleaning.
Replacing the dust filter and cleaning the air duct with cleaning agent are all carried out from outside the air conditioning system. If the air volume at the air outlet is still small after cleaning and the odor is not completely removed, you can only go to the repair shop to remove the bellows, replace the evaporator and manually clean the shell of the air conditioning heating device. However, bellows is generally installed under the dashboard of the car, so the maintenance workload is large and the cost is high.
Ozone disinfection
Disinfect automobile air conditioner with high concentration ozone water. It is understood that ozone water is one of the strongest oxidants available at present, which can easily oxidize and denature the protein shell of bacteria and fungi, quickly kill bacterial propagules and spores, and oxidize and decompose Escherichia coli, Staphylococcus aureus, hepatitis virus and cold virus. Ozone is active and can be automatically reduced to oxygen at room temperature. It is the most environmentally friendly bactericidal substance at present.
Antibacterial strategy for air conditioning cleaning of passenger cars
Anti-bacterial strategy of automobile air conditioning cleaning in summer
Summer is the season when automobile air conditioners are frequently used. It is necessary to do a cleaning project of automobile air conditioner before frequent use, so as to avoid air conditioner failure, prevent bacteria and viruses from breeding in the air conditioner, seriously endanger the health of the owner and affect the normal use. Beautiful car will recommend antibacterial strategies for air conditioning cleaning in summer for car owners.
Automobile air conditioners tend to accumulate bacteria.
The evaporator and fan of automobile air conditioner are in a closed and dark state for a long time, and the internal environment is hot and humid. Impurities, dust, bacteria and viruses in the air enter the air conditioner, and then stick together with condensed water to block the evaporator and other parts. Over time, a lot of dirt, nicotine, mold, fungi and so on are attached.
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 by changing the system pressure. It consists of an evaporation box, an expansion valve, a compressor, a blower, a condenser, a drying tank and a pipeline. When the air conditioning system works normally, the evaporation box works in a cold environment, and water will be produced when it meets relatively hot air outside, which is also the reason for designing the water outlet pipe in the evaporation box structure. Humid environment and dust on the surface of evaporation box and ventilation pipe provide a hotbed for the growth of mold and fungi.
Closed narrow space is easy to inhale germs.
Moulds and fungi will quickly multiply into mould clusters and fungus clusters, which will produce the rotten smell of organisms. These smells will be mixed with the air conditioner when the air conditioner is turned on, polluting the interior of the whole carriage, which often makes drivers and passengers feel uncomfortable. People with allergies may feel it more deeply.
After a long winter and spring season, when we start to use the car air conditioner again in summer, harmful germs will be blown out of the air conditioner and sucked into the human body in the closed and narrow space inside the car, which will lead to various symptoms of "car air conditioning disease"; Every driver should pay attention to improving the air inside the car and improving the efficiency of air conditioning and refrigeration.
Aerosol cleans air conditioners away from bacteria.
Summer is coming. Before using the air conditioner, it is suggested that the owner clean the air conditioning pipes and evaporation boxes. There are two cleaning methods for air conditioners in the market: foam cleaning and spray cleaning.
Foam cleaning method is to spray foam cleaning agent directly into the air conditioning pipeline and clean it by blowing foam and attaching dust. However, many pollutants are difficult to attach completely, and foam attached to the pipeline wall is easy to attach dust, resulting in secondary pollution.
The other spray type is the disassembly-free cleaning technology of automobile air conditioner, in which the liquid medicine is sprayed on the air conditioning pipeline in the car. The advantage of this method is that the liquid medicine can be evenly sprayed on all the places where the blower can blow, and the pollutants such as dust, grease and mold attached to the evaporator, filter, condenser and pipeline of air conditioner can be quickly removed, so as to achieve the purposes of cleaning, sterilization and antibacterial, avoid secondary pollution, form a protective film and inhibit mold regeneration. It is very important to develop good car use and maintenance habits, and the combination of prevention and control has the best effect.
Harm of odor in automobile air conditioning
However, the smell of car air conditioners is not just bad. A large number of experiments have proved that water vapor attached to the evaporator of air conditioner will produce at least three kinds of molds harmful to human health: Aspergillus, Penicillium and Penicillium. Although there are few complaints about automobile air conditioning around us at present, medical experiments show that these molds may cause harm to human body in seven aspects: they may cause headache, fever, sudden sore throat, tonsil infection, asthma, flu symptoms, dermatitis and wound healing.