How to quickly defog car window glass on a rainy day?

It's spring, and it's cold and rainy in spring, and driving in the rain can be a headache for some drivers. We often see drivers who drive slower than a snail despite the wide road and few cars, because the fog in the window glass obstructs their view. Today, we're going to talk about how to quickly defog car window glass on a rainy day.

Why do car windows fog up on rainy days?

In fact, it is a very simple physical phenomenon, which is the same as fogging up with glasses in winter. On rainy days, the outside temperature is low, while the inside of the car is hot, the humidity is high, and when the exhaled air hits the cold glass, it will form water vapor and condense on the car window.

Front windshield defogging.

1. Equipped with automatic air conditioning.

Press the front windshield defrost button and outside air enters the car and automatically selects the air conditioner. When this air distribution location is selected, the internal circulation mode cannot be selected. The blower speed and temperature control operate automatically and cannot be manually adjusted, and the blower is set to run at high speed.

2. Equipped with manual air conditioning.

Rotate the air supply knob to the defogging gear, you need to manually select the air volume, and the air conditioner will automatically default to the external circulation mode. Some relatively old models adjust the way of internal and external circulation is manual paddle type, so that the air conditioner can not automatically adjust the internal and external circulation, it is recommended to manually select the external circulation mode to remove fog.

Rear windshield defogging.

Use a window heater to defrost or defog the rear windshield. Whether it is a manual air conditioner or an automatic air conditioner, there are separate on/off buttons on the air conditioner panel. However, it should be noted that the window heater only works when the engine is running.

In most models, the heater is automatically switched off after a few minutes of being turned on. This heater is only for defrosting or defogging and does not serve as a snow removal.

Fogging of glass on vehicles is a common problem, and in many cases, it is easy to cause accidents due to lack of sight. As long as the air conditioning system is used reasonably, it can effectively reduce traffic accidents caused by fogging.

1. Open the window for ventilation: When the window is slightly fogged, open the windows on both sides to maintain ventilation and let the internal and external air convection, which can evaporate the "fog" of the window, and then play a defogging effect.

2. Use defogging agent: only need to spray the defogging agent on the inner and outer surfaces of the car glass to effectively prevent the fog from condensing and form a protective film, and spraying and wiping can prevent fogging for about 5-10 days.

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The reason for the fogging of automobile glass is that the temperature difference between "internal heat and external cold" is large, and the hot air in the car encounters the cold glass water vapor condensed on the inside of the glass, which will affect the driving speed, and may affect the driver's vision and cause serious traffic accidents.

For manual air conditioning, turn on the front window defogging mode, then adjust the wind speed to the maximum, turn on the A C switch, and then adjust the temperature to the lowest, and the fog on the glass will disappear after a while.

Some models come with an electrically heated rear windshield and exterior mirrors that can be switched on for about a minute to remove fogging.

In the case of automatic air conditioning, you generally only need to press the one-button defrost button, and after pressing it, the air volume will automatically turn on to the maximum and open the external circulation, which is both practical and convenient.

Extended information: air conditioning defogging agent is a simple and fast method, but this is also used in the case of glass fogging in the driving, if you want to prevent it in advance, then the effect of the defogging agent is better, the defogger on the market ranges from tens of yuan to hundreds of yuan, the ingredients are actually not much different, and the only difference may be the durability.

To use it, you only need to spray it evenly on the glass surface and wipe it clean with a dry towel. Its principle is to use the method of surfactant to retain a certain protective film on the surface of the glass, change the surface tension of water molecules, and make the fog beads condense into large water droplets, so as not to block the line of sight.

If the front windshield of a car is foggy, it will seriously affect driving safety. My experience teaches you to remove fog from the windshield of a car.

1. Some cars have a "max" button on the blowing button, after pressing this button, the air outlet will blow the air flow to the front windshield, and the defogging speed is fast and the effect is good. However, be careful to open the outer circulation.

Second, you can also turn on the cold air mode on the basis of rapid defogging, but this should not be used when the weather is too cold. It is suitable for spring and autumn food, and the effect is better. Note that at this time, the "A C" button of the air conditioner is turned on, and the expected effect can be achieved.

3. When defogging, you can also choose hot air defogging, press the "A C" button to adjust the temperature in the car to the highest, and turn the hot air to the maximum, which can also achieve the defogging effect.

Fourth, there is a simple way to defog the front windshield of the car, that is, open the window, pay attention to open the window not only one side, at least open two windows, through air convection to achieve a rapid defogging effect.

Fifth, it can also be defogged with professional defogging agents. You can buy a professional defogging agent and spray it on the front windshield of the car to achieve the defogging effect.

6. It is also possible to prepare your own defogging agent. Mix dish soap and tap water in a ratio of 1:6 and then spray it on the front windshield of the car, which also has a good defogging effect. You can also save money.

The easiest way to fog up your windows is to turn on the defogging gear on the air conditioning control panel. Turn on this function, and the air outlet under the front windshield will blow out cold air to clear the fog.

Many people think that why is the cold air blowing, because the temperature inside the car is higher than the temperature outside the car, the windows will fog up, so the blowing must be cold air. This method is the most effective and fastest. In fact, the opening window can also reduce the temperature in the car and clear the fog, but the time will be longer, and the effect is not as good as removing the fog gear.

Many car owners must have experienced fogging of their car windows, resulting in a situation where they cannot see the road ahead and the rearview mirror clearly. This is very dangerous for cars and drivers, so window defogging is very important. Here are some ways to defog your windows.

1.Use a special defogging product.

In many markets, auto parts cities and other places, there will be some stalls selling special products for defogging and anti-fogging, such as defogging agents or fog towels. This defogging agent is sprayed on the inner surface of the car glass and wiped clean. While removing the glass dirt, a thin transparent protective film can be formed on the glass, which can prevent water vapor from condensing on the glass to form a fog layer, and a spraying can prevent fogging for ten days to half a month.

2.Empty air conditioning and defogging.

When the windshield fogs up on rainy days, you can also use the air conditioning system to defog it. Turn on the fan and cooling switch in the car and let the cold air blow on the glass, and the fog will quickly dissipate. However, its disadvantage is that during the low temperature season, the occupants of the car may feel cold when using the cold air to clear the fog.

3.Air conditioned hot air to clear the fog.

Hot air can also remove fog. Park your vehicle on the side of the road, turn it on and wait until the fog inside the glass is dry, then lower the temperature a bit. This way, there will be no more fogging during the rest of the drive, as the air inside the car will become dry.

However, it should be noted that do not be greedy for convenience, and try to blow the glass with hot air when driving to prevent danger.

4.Open windows for convection.

If the fog is not too heavy, we can make a gap in the windows on both sides (we can't do this when it's raining) so that the air inside the car will be convection, and the temperature inside the car will slowly approach the temperature outside the car, and the fog will dissipate. The advantage is that it is possible to turn on the air conditioner without increasing fuel consumption, but this method cannot be used in all situations, such as cold winters and rain.

1. Leave gaps in the windows to convection.

If the fog is not large, we can open a gap in the windows on both sides (we can do this when it is raining), so that the air inside the car is convection, and the temperature inside the car slowly approaches the temperature outside the car, and the fog will dissipate. The advantage is that it can achieve the effect of turning on the air conditioner without increasing fuel consumption.

2. Turn on the air conditioner to cool the air.

If it rains, you can turn on the air conditioner in the car and adjust the temperature to cold air, which can reduce the temperature difference between the inside and outside of the car and achieve the purpose of quickly removing fog.

3. Turn on the air conditioner and blow hot air.

On the contrary, there is another method, which is to turn on the heater air conditioner in the car and use the hot air of the air conditioner to dry the fog in the car. In this way, not only the front windshield, but also the surrounding windows are clear and transparent. However, this method takes a long time, and at the beginning it will make the fogging of the glass more serious, and after a few minutes, the hot air will dry the moisture in the car, and the glass will become transparent, so this method is suitable for parking the car on the side of the road before starting.

4. Wipe with dish soap and dry cloth.

Many people have mentioned the method of wiping the glass with a dry cloth with some dish soap. Choose a sunny day, mix dish soap with water (1:6), apply a sponge evenly on the glass of the car, and wipe it clean with a car towel after it is dry, leaving no traces.

In general, it is updated every two to three weeks to maintain the effect.

5. Reasonable use of air conditioning system.

Turning on the AC and external circulation modes of the manual air conditioner at the same time is equivalent to turning on the defogging mode.

1. Adjust the tuyere to the one that blows the front windshield, remember to open the external circulation, and blow the cold air. In this way, the temperature will drop very quickly, and the fog will naturally disappear.

2. You can install a rain shield, so that when it rains, you can open a little window, so that the air inside and outside the car can be effectively convection, and the temperature difference will be gone, and there will be no fogging.

3. You can also apply a layer of detergent in front of the window, which can also have the effect of anti-fogging. The method is simple: dilute the detergent and apply a gentle layer with a cloth. Try it and you'll find out, there are also ready-made ones on the market.

4. The fog on the side windows will also affect the driver's view of the rearview mirror. You can use cold air to blow, remember to adjust the wind direction, in addition to the left and right side of the air holes open, the middle air holes can be closed to strengthen the wind. Foggy rear windows can be heated with electricity.