Can the air conditioner dehumidify all night? What damage will it cause to the air conditioner?

Some people say that air conditioning dehumidification is more energy-saving than refrigeration, and some people say that air conditioning dehumidification mode will damage the compressor. Where is this mysterious dehumidification mode? We might as well discuss it in detail.

In fact, the principle of dehumidification mode and refrigeration mode is the same, and both use the circulation of refrigerant to reduce the temperature of evaporator on indoor machine. The difference is that the refrigeration mode is to blow the low temperature to the evaporator with wind indoors; In the dehumidification mode, the indoor air with high humidity contacts with the evaporator with low temperature to produce condensed water, which is discharged along the condenser pipe to achieve the purpose of dehumidification.

In other words, the refrigeration mode can also dehumidify-so we will be thirsty if we stay in the air-conditioned room for a long time. Dehumidification mode can also cool down-so some people think it's cool to turn on dehumidification mode in summer.

The difference is: in order to accelerate the room temperature reduction, the refrigeration mode will turn on large air volume; In dehumidification mode, the indoor fan will be turned off to prevent the condensed water on the evaporator from evaporating again.

Dehumidification mode, energy-saving dehumidification mode and refrigeration mode both need to set the temperature. The difference is that the refrigeration mode sets the indoor temperature-when the room temperature reaches the set temperature, the air conditioning compressor will stop running. Dehumidification mode sets the evaporator temperature-when the evaporator reaches the set temperature, the air conditioning compressor will stop.

Obviously, the dehumidification mode requires a smaller cooling area, which can reach the target temperature faster and stop the compressor. When the compressor runs for a short time, the power consumption will naturally be low.

Dehumidification mode will damage the compressor. When the indoor temperature rises, the heating speed of the air conditioner evaporator will also accelerate. So the working state becomes: the evaporator temperature is very fast and stops; The evaporator temperature rises rapidly and the compressor starts ... so starting the compressor frequently and repeatedly will not only save electricity, but also affect the life of the compressor. And the higher the indoor temperature, the more obvious this problem is.

Generally speaking, "dehumidification mode power saving" will be more obvious below room temperature 30℃; "Dehumidification mode damages the compressor" will be more obvious when the room temperature is above 40℃-between 30℃ and 40℃. Dehumidification mode can be used normally, but the power saving effect is very limited.

In fact, the function and principle of air conditioning dehumidification and refrigeration are the same, but the purpose is different. Refrigeration is also dehumidification, and dehumidification is also refrigeration. It is incorrect to say that long-term dehumidification will damage the compressor.

Refrigeration mode: The purpose of lowering the air temperature is that the low-temperature liquid refrigerant enters the indoor evaporator to reduce the pressure of refrigerant vaporization and heat absorption. The air sucked by the fan flows through the evaporator to lower the temperature, and the water vapor in the air condenses and accumulates after cooling, and then flows out. The temperature and wind speed of refrigeration can be adjusted up or down. Control the temperature by starting and stopping the compressor (fixed frequency air conditioner) or reducing the frequency (variable frequency air conditioner).

Dehumidification mode: for the purpose of removing water vapor, low-temperature liquid refrigerant enters the indoor evaporator to reduce the heat absorption pressure of refrigerant vaporization, and the air sucked by the fan flows through the evaporator to reduce the temperature, and the water vapor in the air is condensed and accumulated after being cooled, and then flows out. The air conditioner operates in the automatically set low temperature and low wind speed mode, and the compressor of the fixed frequency air conditioner will start and stop repeatedly, while the frequency conversion is generally to compress and reduce the frequency without stopping.

Some people think that repeated starting and stopping of the compressor is harmful to the compressor. Now the compressor technology is very mature, whether dehumidification or refrigeration, it is normal loss. It is as durable as the repeated start and stop of the compressor in the ordinary refrigerator for 365 days a year. Dehumidification and refrigeration are normal functions of air conditioners. Didn't say it was easy to damage the compressor, so don't worry about this problem. Compared with the compressor, the failure of the inverter board of the inverter air conditioner is higher, especially in the high frequency band (that is, the compressor works for a long time with high load), and the voltage is unstable. When using inverter air conditioner, don't set the temperature too low, and try to use super mode as little as possible. Some people say that "turning on the dehumidification mode to cool the room is energy-saving and cool" is sheer nonsense, which is not credible to laymen who don't understand air conditioning.

I'm happy to answer your question.

For the hot weather in summer, we can't wait to sleep with the air conditioner, but although it can bring us a lot of comfort and convenience when using the air conditioner, we should also have a certain understanding of the function of the air conditioner to avoid its damage due to improper use. In summer, we usually use air conditioners to modulate cooling or dehumidification modes, but can the dehumidification function be turned on all night when using it? What damage will it cause to the air conditioner? What should I pay attention to when using air conditioning? Try to talk to you about these problems today.

1. How many degrees is it appropriate to set the air conditioner in dehumidification mode in summer? 1, air conditioner automatically sets dehumidification temperature:

For some air conditioners, the dehumidification temperature is set by the manufacturer at the factory. If our air conditioner is like this, we don't need to set it separately when we use it. The air conditioner automatically controls the dehumidification temperature. Generally, the temperature in dehumidification mode will be 2 degrees lower than our indoor temperature.

2, air conditioning manual setting dehumidification temperature:

Although many air conditioners do not need us to set the dehumidification temperature manually now, it is inevitable to set it. In this case, if we set the dehumidification temperature, we only need to set the temperature to 4 degrees lower than the indoor temperature.

2. Can the dehumidification function of air conditioner be turned on overnight? The answer is definitely no.

Specific reasons:

In fact, the dehumidification function of air conditioners is not recommended for long-term use. If we turn it on for too long, it is easy to cause unnecessary damage to the compressor of the air conditioner. Moreover, when we use the air conditioner, if we choose to use the dehumidification function, we usually pause for a period of time after using 1-2 hours, and we need to pay attention to when it is better to use the dehumidification function.

Usually, when we use air conditioning, the temperature will be lower at night. At this time, it is best to use dehumidification function, which can adjust the indoor temperature and humidity well. On rainy days, if the room is sultry and the indoor temperature is high, we can also adjust the air conditioner to dehumidification function appropriately.

Third, using air conditioning refrigeration mode or dehumidification mode is more energy-saving: if the air conditioner sets the lowest refrigeration temperature, it can actually achieve dehumidification effect, but such temperature will increase the energy consumption of air conditioner and cause electricity consumption. When the maximum refrigeration temperature is set, the running time of the air conditioner is shortened, so if we want to save electricity when using the air conditioner, we still need to set an appropriate temperature.

If the air conditioner is equipped with dehumidification function, the air conditioner will automatically set the temperature suitable for the human body. If it is lower than this temperature, the air conditioner will automatically stop, so it will not consume electricity. However, if refrigeration is selected to achieve dehumidification effect, the temperature must be set to the lowest, resulting in additional energy consumption and increased power consumption.

People who often stay in air-conditioned rooms in summer may know that the room is very dry, because air conditioners can dehumidify the air when cooling. Can air conditioning dehumidify for one night in summer? Next, we will analyze it.

The sauna days in summer make us feel very hot and uncomfortable. In fact, the important reason is that the air humidity is too high. Because the moisture in the air is close to saturation, the sweat discharged by the human body cannot evaporate into the air, and the sweat is on us, so the temperature is not high. As a result, we are not hot.

The dehumidification function of air conditioner solves this problem well. After the humid air passes through the evaporator, the water vapor condenses into water droplets, and the air is heated to the original temperature and discharged indoors. Under normal circumstances, the temperature of the air conditioning dehumidification mode built in by the manufacturer is 2 degrees lower than the room temperature, and the indoor air humidity is reduced, so people naturally feel cool.

In dehumidification mode, the air conditioner will frequently start and stop the compressor to ensure the indoor temperature. Although the quality of the compressor is much better now, it will affect the life of the compressor if it is turned on all night. The most important thing is that the air is too dry, which will also cause bad harm to the body. Therefore, it is not recommended that you always turn on the dehumidification function. If you can't sleep at night, you can set the air conditioner to turn off regularly, preferably within two hours.

I hope I can help you, thank you!

Before answering this question, let's learn about two modes of air conditioning, one is cooling mode and the other is dehumidification mode.

The cooling mode aims to reduce the air temperature and dehumidify at the same time.

The purpose of dehumidification mode is to remove the water vapor in the house and achieve the function of cooling.

Therefore, the principle of dehumidification with control mode and dehumidification with special dehumidification mode is actually similar. After the air conditioner is turned on, the water vapor in the air will condense into water when it meets the evaporator of the air conditioner with low humidity, and then it will be discharged outside through the accumulated water pipeline.

Since the principles of refrigeration and dehumidification are the same, why should the air conditioner be specially equipped with dehumidification mode, and the refrigeration mode cannot be directly used?

1. If the indoor humidity is more than 70%, the ordinary refrigeration mode can't achieve complete dehumidification effect, especially in the rainy season in the south of the Yangtze River. Only the special dehumidification mode can achieve the purpose of quickly dehumidifying steam.

2. In the cooling mode, many people set the temperature very low in order to cool the room quickly, and then the air-conditioning blown out is particularly strong. It is easy for people to get sick in such an environment for a long time, and it is easy to cause colds, stomachaches and other physical discomfort for a long time. This is what people often say that staying in an air-conditioned room for a long time is particularly easy to get air-conditioning disease.

The dehumidification mode operates according to the automatically set low humidity and low wind speed to achieve the purpose of dehumidification, so that the cold air blown out is comfortable and relatively harmless to the human body.

3. If the temperature is too high, it is difficult for dehumidification mode to achieve the purpose of rapid cooling, and it may not achieve the cooling effect for a long time. For example, the temperature is relatively high during the day in summer, and in some places it can reach more than 40 degrees. It is best to use dehumidification mode to cool down quickly, but after the temperature drops at night, the cooling effect of the two modes is almost the same.

Therefore, although the two modes can achieve the purpose of refrigeration, there are still differences. We can set different modes according to different requirements.

So can the air conditioner dehumidify all night? What damage will it cause to the air conditioner?

Many people may be concerned about this problem, mainly because the air conditioner will frequently start and stop the compressor to ensure the indoor humidity after starting the dehumidification mode, so it will feel whether it will damage the compressor of the air conditioner. If there is no harm, it is a fool, but the harm can be said to be very small. As previously analyzed, dehumidification mode makes people feel more comfortable, while long-term cooling mode, especially cold air blowing, is easy to cause physical discomfort. Which choice do you think is more important? I believe everyone can understand this.

Is it necessary to save electricity by turning on dehumidification mode for a long time? This is pure misunderstanding. .

In July, a statement about air conditioning was widely circulated on the Internet. Both dehumidification and refrigeration modes can reduce the room temperature, but dehumidification mode saves more electricity. Recently, the People's Daily specifically refuted the rumor that when the temperature exceeds 30 degrees, the electricity consumption of dehumidification and refrigeration modes is similar. When the temperature exceeds 20 degrees, dehumidification mode will save electricity than refrigeration mode.

You may not understand, the original purpose of the inventor of air conditioner is dehumidification (to get dry, wet and cold air):1902 In July, the British inventor Willis Haviland Carrier designed this kind of air conditioner for his company's customers (a printing factory) to solve the problem that the printing paper would be deformed due to the change of air humidity, which would affect the ink instability and make it impossible to print clearly. The refrigeration and dehumidification modes of air conditioners are based on the principle of cold and heat exchange. When the air passes through the air conditioner condenser, the water molecules in the air condense into water due to the sudden temperature drop (the same as the rain theory). When the water molecules in the air become water and are eliminated, the humidity in the air decreases, and it will be drier if the air conditioner is blown for a long time.

After understanding the principle of air conditioning, in fact, both air conditioning refrigeration and dehumidification modes are dehumidification. When the air conditioner works in dehumidification mode, the indoor fan will always run at a low speed, the compressor will start and stop, and the refrigeration system will carry out intermittent refrigeration cycle, and most of the refrigeration generated will be used to balance the latent heat of indoor air, that is, water vapor will become condensed water. Dehumidification mode will be mainly based on dehumidification in design.

Then back to the topic, if the air conditioner is turned on in dehumidification mode all night, the air will be drier, and the compressor in dehumidification mode will be turned on and off, which will have an impact on the compressor. Of course, for inverter air conditioners, I don't know if the dehumidification mode compression opportunity will stop.

It is generally recommended to start dehumidification mode in spring (frequent rainy season). In fact, you can dehumidify by turning on the refrigeration high wind gear, but it will consume more electricity. In fact, the design mode of air conditioning has taken into account the actual situation. Each mode has a corresponding function, and the intelligent mode has actually been designed.

In fact, based on personal experience, I will give you three good suggestions for saving electricity:

1, the air conditioner is higher than usual 1 degree, and we will feel cooler with the fan on.

2. Increasing the wind speed is more energy-saving than lowering the temperature, but the air will be drier with high wind speed.

3. Don't turn off the air conditioner often, even when you go out (the old people at home often turn off the air conditioner when they go out, thinking it will save more electricity)

Not so good.

If the outdoor temperature is high and the air is dry, do not turn on the dehumidification mode for a long time to avoid damaging the compressor.

Generally, when the outdoor temperature is higher than 40 degrees, it will run in ordinary refrigeration mode. Only at night when the temperature is relatively low and the humidity is high, can the dehumidification mode be started in time to achieve the effect of adjusting indoor temperature and humidity.

Dehumidification for one night and refrigeration for one morning will do more harm to the compressor, but dehumidification for one night will make the air particularly dry, and people who live in dry air for a long time will definitely feel uncomfortable, rough skin, dry mouth and so on!

You can drive.

All electrical appliances, from air conditioners to mobile phones, will wear out as long as they are used. But why should we buy them? For use, for comfort, for fun, of course. It's very hot now. I don't need to say how hot it is. Can the air conditioner not be turned on in order not to break down? I can't.

As for the statement that starting the dehumidification mode will damage the compressor, as long as the products produced by regular manufacturers are guaranteed, they can be repaired during the warranty period, and the service life is within the acceptable range.

I went to Hunan on business and slept in the hotel for one night. The air and the quilt are humid and sultry, and the air conditioner has been on dehumidification mode for one night. I don't know if it's psychological or really useful. I slept well, or I like the dry weather in the north.

I hope my answer is helpful to you.

Let me tell you a professional knowledge. The machines in Midea Air Conditioning Store all have BP letters, that is, inverter air conditioners, and 3DN in the letters is full DC inverter air conditioners. E-commerce models sold online do not necessarily have BP letters, so this is also a simple way to distinguish between physical store models and e-commerce models.

It is said on the Internet that starting dehumidification for a long time will damage the compressor. Is it true?/You don't say. This is not true. Dehumidification is the basic function of air conditioning, which condenses the moisture in the indoor air when the air conditioner is cooled, and the condensed water flows out of the room along the air conditioning water pipe to achieve the dehumidification effect, so the air conditioner can be kept on without causing damage to the air conditioner.