Car trivia Things to pay attention to when using car air conditioners in summer

In the blink of an eye, it is the hot summer again, in this season, air conditioning has become the most inseparable equipment, so today I will introduce to you the precautions for the use of car air conditioning in summer.

The temperature of the air conditioner should be adjusted to a temperature suitable for the human body, the temperature should be neither too high (which will make people sleepy) nor too low (which can easily make people sick), usually, it is best to adjust it to 23-25 degrees is the optimal temperature.

When starting the car, to use the outer circulation, many car owners think that opening the internal circulation can quickly cool down, in fact, the temperature in the car is higher than the outside temperature at the beginning of summer, so the best way is to ventilate first, and then turn on the outer circulation to quickly reduce the temperature in the car.

The direction of the air outlet of the air conditioner should be adjusted well, many car owners like to blow the air outlet to the person, the effect is very bad, the density of hot air is less than the density of cold air, the air outlet should be blown upward, so that the car can be quickly refrigerated.

Turn on the air conditioner for a long time to grasp the time, turning on the air conditioner for a long time will increase the burden on the condenser, which will not only affect the refrigeration effect of the car, but also cause some damage to the engine, so you can turn it off for a while after a while.

Some car owners like to turn on the air conditioner when the vehicle is not started, so that although people feel comfortable, but the power used by the air conditioner at this time is in the car battery, which will lead to a serious battery feeding phenomenon.

The above are a few precautions for using air conditioners in summer introduced to you today, I hope you can pay attention to avoid bringing harm to your car.

1. How to turn on the air conditioner correctly.

Turn on the air conditioner must turn on the A C switch, this is the switch of the compressor, only turn on the blower to blow the air conditioner is not refrigerated, there are really many drivers who do not know to turn on the A C switch.

2. When to turn on the car air conditioner.

Regardless of whether the temperature in the car is very high, or the vehicle is parked in the garage and is not sunburned, after the vehicle starts for more than ten seconds, the air conditioner can be turned on immediately after the engine speed stabilizes a little. At this point, you can increase the air volume and lower all four windows. The large air volume can blow out the dirt and harmful gases in the pipeline.

If the car is exposed to the sun, the temperature in the cabin is higher than the outside, and after opening the window, the hot air in the cabin can also go out of the window, which can shorten the cooling time of the air conditioner. This process does not take too long, about a minute or two, after which you can close the windows and turn on the air volume to the right place.

3. When to turn off the car air conditioner.

Our advice is to turn off the AC switch of the air conditioner two or three minutes before arriving at the destination, and leave the air volume switch off at this time, so that the blower can continue to blow air. The purpose of this is to allow the air to dry the air conditioner's evaporation box and prevent it from growing bacteria. If mold is produced in the evaporation tank of the air conditioner, it will deteriorate the interior environment.

4. The use of internal and external circulation of automobile air conditioners.

When the air outside the car is ***, the external circulation is used to let the fresh air from the outside continue to enter the cabin, so that the air in the compartment is kept fresh; The poor air quality outside the car is circulated internally to prevent bad air from entering the cabin. It is worth noting that when the wind blows the position of the glass, the system automatically switches to the external circulation mode, which is not a fault phenomenon.

5. About the smell of air conditioning.

The odor of the air conditioner is generally caused by the dirty air conditioner core or the dirty evaporation box. The treatment method is that you can replace the air conditioner core first, and if the odor still exists, you need to clean the air conditioner evaporation box. The car air conditioning core should be replaced at least twice a year, once in winter and once in summer.

6. What's going on with insufficient refrigeration.

First, if the refrigeration effect of the vehicle is worse than before, the air conditioning core should be checked first to see if it is dirty. Second, if the car is older, you should check whether the condenser is blocked, if the condenser is blocked, it will affect the heat dissipation, and it will also lead to poor refrigeration effect, in this case, you can clean the condenser. Third, there is no problem with the above, to check whether the refrigerant is insufficient, which requires special testing equipment.

It is worth noting that the cooling effect of different models is different, and if the cooling effect of the model itself is not good, then there is no solution.

7. Which direction should the wind blow?

According to the principle of cold air sinking, the air conditioner should blow upwards or horizontally, that is to say, it is best to adjust the air outlet to the direction of horizontal or slightly upward blowing, but do not blow directly towards the driver. If it blows downward, the person in the back seat may feel hot.

1. When the automobile air conditioner is used for the first time in the season, it is best to sterilize and deodorize the air conditioning system, because the long-term "vacation" of the air conditioning system will breed fungi and mold, which not only makes the air emit an unpleasant musty smell, but also harmful to the health of the people in the car. This work can be carried out at the repair shop, or you can purchase special sprays for sterilization and deodorization to dispose of it yourself.

2. Don't adjust the temperature too low, adjusting the temperature too low will affect your health. Generally, the temperature difference between the inside and outside of the carriage is within 10.

3. When the air conditioner is turned on in the car, it is best not to smoke in the car, if you smoke, you should adjust the ventilation control of the air conditioner to the "outdoor circulation" position.

4. It seems very comfortable to lie in a stopped car with the air conditioner on, but it is not good because the ventilation in the car is poor, and sleeping with the air conditioner on may cause poisoning because the CO gas discharged by the engine leaks into the cabin.

5. When encountering traffic jams in the road-poor stove car, do not make the engine run at a higher speed in order to improve the efficiency of the air conditioner, which is a destructive use for the engine and the air conditioning compressor.

6. Do not use the air conditioner immediately when the temperature in the car is very high when parked in the scorching sun.

7. After parking, be sure to turn off the air conditioner to avoid the automatic opening of the air conditioner at the next ignition moment, which will increase the burden on the engine.

In addition, here are a few simple indicators to determine the performance of air conditioners.

1. Temperature index: Temperature index is the most important index. The most comfortable temperature for a person is 20 to 25, and above 28, the person will feel hot.

Below 14, the person will feel "cold". Therefore, the air conditioner should control the temperature in the car between 18 and 25.

2. Humidity index: The humidity index is expressed by relative humidity. Because the relative humidity that people feel most comfortable with is around 50%.

3. Air quality: carbon monoxide in the exhaust gas of the automobile engine, dust on the road, and toxic pollen in the wild are easy to enter the cabin, causing the air in the car to be turbid and affecting the health of personnel. In this way, the car air conditioner must have the function of replacing and filtering the air in the car to ensure the quality of the air in the car.

4. Defrosting function: Because sometimes the temperature difference between the inside and outside of the car is too large, fog frosting will appear on the glass, affecting the driver's line of sight, so the car air conditioner must have a good defrosting function.

5. Operation performance: the driver can not be distracted by the operation of the car air conditioner, which will affect the normal driving of the driver.

1. Open the window first and then turn on the air conditioner.

Therefore, we can usually find that the first action of many car owners when they get into the car is to turn on the air conditioner. In fact, this will bring hidden dangers to people's health. Experiments have confirmed that after the car is exposed to the sun, the interior of the car will emit carcinogenic gases such as benzene and formaldehyde.

At this time, if you turn on the air conditioner as soon as you enter the car, you may inhale these toxic gases.

The correct way is not to immediately enter the car after exposure to the sun, or after entering the car, instead of rushing to turn on the air conditioner, first lower all the windows or open the door, then turn on the fan to accelerate the air circulation, and then close the window and turn on the air conditioner after a few minutes. This not only allows the toxic substances to be released, but also cools down better.

Second, the correct way is to choose to blow diagonally upward, so as to use the law of hot air rising and cold air falling, so that the cold air can cool down the car from top to bottom.

3. Don't keep your temperature low for a long time.

In addition, in the process of driving, the owner should also pay attention not to blindly covet coolness, and adjust the temperature of the air conditioner in the car to a very low level. Otherwise, people are prone to endocrine disorders due to too much temperature difference between inside and outside the car, making them more likely to get sick. In addition, turning on the air conditioner temperature very low will also lead to an increase in the fuel consumption of the car and increase the cost of the car.

In fact, under normal circumstances, it is best to have a difference of about 6 between the temperature inside the car and the outside temperature.

Fourth, if the owner is driving for a long time, it is necessary to make full use of the internal and external circulation function of the air conditioner. Some new car owners may not know very well, in fact, the internal and external circulation function is to control the air quality in the car, as well as the role of auxiliary heat preservation. Therefore, the car owner knows how to choose according to the bad environment in which the vehicle is located, for example, the vehicle is in the downtown area of traffic jams, in order to avoid the car exhaust gas entering the car, the owner can use the air conditioning internal circulation function, so as to ensure that the air in the car is not polluted.

5. Turn off the air conditioner before turning off the heat.

The last point is that many people are used to getting out of the car without turning off the air conditioner and turning off the engine directly. As everyone knows, although this is very convenient, the damage to the air-conditioning compressor is very large, and it is easy to breed bacteria in the air-conditioning air duct over time. The correct way is to turn off the vehicle's air conditioning compressor, that is, the AC button, about 5 minutes before the vehicle arrives at the destination, let the blower continue to work, dry the water vapor in the air duct, and then turn off the blower after arriving at the destination.

This can effectively reduce the working pressure of the air conditioning compressor and prolong the life.

The car is exposed to the scorching sun for a long time, and the small and closed compartment will lead to poor air flow in the car, and after a long time of continuous "baking" by the scorching sun, the temperature in the cabin is much higher than the outdoor temperature.

If you open the car door at this time, there will be a wave of heat in an instant... When many people encounter this situation, they will immediately start the car, turn on the air conditioner, and adjust the wind speed to the maximum to achieve the fastest cooling effect. In fact, this not only does not quickly reduce the temperature in the car, but also wears down the engine to a certain extent.

Generally speaking, after the car is started, the tachometer needle tends to climb to a higher rev all at once, and then drop to a relatively stable rev after a few seconds. If the air conditioning compressor is turned on just after starting, it will increase the load on the engine, which can damage the engine for a long time.

Therefore, the correct approach should be to open the four windows first, so that the air can be convection, so that the temperature in the cabin is equal to the outside temperature as soon as possible. When the engine speed is stable, close the windows and turn on the air conditioner, which will not damage the engine and quickly reduce the temperature in the car.

Pipe cleaning, open the window before turning on the air conditioner, temperature modulation 25 is the best, and the opening time should not be too long, etc.

When the air conditioner is used frequently in summer, a lot of dirt, dust, and bacteria will grow in the airside adjustment pipe, which will affect human health, and the air conditioning pipe must be cleaned regularly.

If the car is parked for a long time in the hot sun, do not use the air conditioner immediately after the vehicle is started. All windows should be opened first, the external circulation should be started, the hot air should be exhausted, and the windows should be closed after the temperature in the cabin has dropped.

The most suitable air conditioning temperature for the human body should be between 24 and 27, the minimum should not be lower than 22, and the temperature difference between the inside and outside of the car should not be greater than 5. If the air conditioner is turned on too much and the temperature in the car is too low, it is easy to cause arthritis, frozen shoulder, cold, diarrhea, fever, lack of energy, etc. It is generally recommended that the temperature of the air conditioner in the car be controlled at about 25.

Using an air conditioner for a long time can cause excessive condenser pressure, which can cause wear and tear on the refrigeration system. So, if the temperature inside the car is already comfortable for you, turn off the air conditioner for a while and let it rest for a while.

The principle of air outlet of automobile air conditioner: when turning on the air conditioner, the air outlet will be upward, and when the heating is turned on, the air outlet will be downward.

<> "Things to pay attention to when using the automobile air conditioning system in summer.

1) Prevent the ingress of unclean air. If the car is driving on a dusty road, the air inlet should be placed in the recirculation (red) position to prevent dust from entering the vehicle.

2) When it is hot, the air in the car should be exhausted. When the windows are closed, the air conditioning system is efficient. But if the car is parked in the sun for a long time, when the car is very hot, after turning on the air conditioner, a glass window should be opened, and then closed after the hot air in the car is discharged.

3) The temperature of the air conditioner should not be adjusted too low, and the wind speed should not be too small. The temperature difference between the inside and outside of the general compartment of automatic constant temperature air conditioning should not exceed 10. For non-thermostatic air conditioners, you can first set the temperature of the air conditioner to the lowest and turn the wind speed to the maximum, and then turn the temperature up a little when it feels cold, and lower the wind speed by one gear.

4) When the engine is under heavy load, the air conditioner should be temporarily turned off. In the hot season, when the engine works for a long time under heavy load, it should have a good cooling effect, and in order to prevent the engine from overheating, it should be temporarily closed and closed. Otherwise, once the engine overheats, it will not only affect the driving of the car, but also affect the use of air conditioning.

5) When refrigerating, the wind direction of the air conditioner blows upward, because the cold air will sink downward, the wind direction block selects the blowing surface block, and the upward effect of adjusting the air outlet is good, do not choose the block of the windshield, because the temperature of the windshield is very high, which will offset a large part of the refrigeration effect.

6) Reasonably choose the wind speed and gear of the air conditioner. In the normal operation of the car, in order to prevent excessive frosting of the evaporator and affect the operation of the air conditioning system, the air supply speed and temperature control of the air conditioner should not be placed at the lowest for a long time. But when the speed is less than 25km h, the wind speed switch should be set in the low speed gear to avoid insufficient power generation and insufficient air conditioning.

7) Master the starting procedure of the engine. For the automobile air conditioning system without automatic speed control device, the engine should be started first and then the air conditioner should be turned on when used to avoid difficulty in starting.

8) When the air conditioning effect is poor, the air conditioner should be turned off and accompanied by the inspection in time. When the cooling effect of the air conditioner is poor, it indicates that the system is not working well, and turning off the air conditioner in time can prevent the expansion and deterioration of the fault, which is very important to protect the air conditioner and prolong the service life of the air conditioner. If the air conditioner fails, it should generally be repaired by professionals.

In the season when the air conditioner is not in use, the air conditioner should be left working for a few minutes every 2 to 3 weeks to keep the system in good working order.

9) Give the whole air conditioning system a full cleaning in summer. There are many kinds of cleaning agents on the market that are used to clean air ducts of air conditioners, and car owners can buy them to clean them by themselves. Of course, car owners who don't want to do it themselves can go directly to the 4S store or car decoration store, and can use high-concentration ozone water to sterilize the car air conditioner.