Is it OK to fan all night The problem with the fan blades

Not good. Electric fans make people cool, but if they are turned on frequently, they will cause a series of symptoms such as sneezing, runny nose, fatigue, headache, dizziness, insomnia, shoulder pain, and loss of appetite, which is "fan disease". Electric fans can speed up the evaporation of sweat, making people cool and comfortable.

However, due to the constant and variable speed of the fan, the airflow and vibration are carried out at a fixed frequency, so it is not as gentle as natural wind. In addition, the "whirlwind" of the electric fan has a tremor effect on the person's eardrum, and if it is too long, it will also make the person feel tired. The amount of sweat in the human body evaporates, and all parts should be balanced.

When blowing the fan, the sweat on the side close to the fan evaporates quickly, the surface temperature drops, and the blood vessels constrict, while the surface temperature on the other side is still high, and the blood vessels expand. If it takes too long, it will disrupt the balance on the surface of the human body. The key to preventing fan disease lies in the scientific use of fans, first of all, the use time should not be too long, 30 minutes to 1 hour is appropriate; And the speed should not be too fast; Secondly, the fan should not blow directly on the human body, nor too close, after blowing for a period of time, the position of the fan should be changed, or the human body should change the direction, so as not to be frozen for too long; Again, don't sleep with the fan on, the temperature is too high, you can only shake the head and breeze, and use the timing control; Also, when you sweat profusely, don't sit still and blow violently.

In addition, the elderly and frail, children and patients with long-term illness, colds, and arthritis should not use electric fans as much as possible.

Not good, the right way:

First of all, the wind speed should not be too large: modern science believes that the indoor wind speed is best controlled at 0 2-0 5 meters per second, especially in the room with good ventilation and in the place where there is too much wind, the wind speed of the fan should not be too large.

Secondly, it is not advisable to blow directly on people: blowing directly, wind evil is easy to invade the body, especially when the body is weak or sweating, it is best to let the electric fan blow towards a corner; For children, the elderly, and people who are weak, it is better to use less electric fans to blow the air, because "where the evil is, its qi will be empty", but you can use an electric fan to adjust the indoor airflow, so as to indirectly cool down.

Please landlord or regular time is better for the body, hehe

It's not good, it's best not to blow on the human body, you can use the fan as an air circulation tool, so that the indoor air circulation is good, and the human body can also feel the breeze

No, the right way: First of all, the wind speed should not be too large: modern science believes that the indoor wind speed is best controlled at 0 2-0 5 meters per second, especially in the room with good ventilation and in the place where there is too much wind, the wind speed of the fan should not be too large.

Secondly, it is not advisable to blow directly on people: blowing directly, wind evil is easy to invade the body, especially when the body is weak or sweating, it is best to let the electric fan blow towards a corner; For children, the elderly, and people who are weak, it is better to use less electric fans to blow the air, because "where the evil is, its qi will be empty", but you can use an electric fan to adjust the indoor airflow, so as to indirectly cool down. Please landlord or regular time is better for the body, hehe

That's how it should be!

Not good, it will be difficult to get out of bed the next day, and the hands and feet will be weak.

When people fall asleep at night, they are the weakest time, and when they blow a fan overnight, the body is easy to get cold and cold, resulting in colds or other illnesses!! The mind is calm and naturally cool.

The width and angle of the fan blades are designed, depending on the load power of the motor. So the size of the wind depends on how many watts the power of the motor is. If you don't consider the motor power, only look at the speed of a certain speed, but also look at the angle of the fan blade, if the angle of the fan blade is the same, of course, the fan blade width of the wind.

I think there is still a problem with the speed.

Air conditioner fan good.

The air conditioner fan is a combination of the advantages of the air conditioner and the electric fan, for example, the air conditioner blows out the machine wind, and it needs to be in a closed environment, which is easy to make people feel uncomfortable. Although the fan is a natural wind, if the environment is very dirty, the wind blowing will also be dirty. A large number of air conditioning fans have dust filters that can filter the air, and if there is a layer of photocatalyst on the dust removal net, it can also have a sterilization effect.

The air conditioner fan is only 60-80w when it starts to refrigerate, which is the same as that of the refrigerator, so it does not consume electricity. For example, Lianchuang's air conditioning fan uses ice crystals to refrigerate the effect, and the freezing point of ice crystals sent by Lianchuang is -12 degrees Celsius, which has a better refrigeration effect than ordinary ice cubes, and the time is longer. If it is an air conditioning fan, it can also be used in winter.

Advantages of electric fan: early listing, suitable price, large air volume, and there are tabletop, hanging, floor-mounted, wall-mounted and other models to choose from.

Disadvantages: Due to the use of air flow to generate wind to cool down, the cooling effect is not very obvious, especially when the temperature is high, and the season is strong, it can only be used in summer.

Advantages of air conditioning fan: low power consumption, ** medium to low, some products also have the effect of heating air and the installation of negative ion function, small size, easy to move.

Disadvantages: The refrigeration effect is not very good for large areas, there is no dehumidification function, it is not easy to use in places with high temperatures, and it also increases the humidity in the air when used.

In the summer of 08, I bought a Lianchuang air conditioning fan from the Internet, it seems to be more than 500, and it was so-so at the beginning, and the noise was a little louder, similar to the electric fan. In winter, the heating after a period of time is broken. I contacted the repair point on the warranty card, and the repair point replied that I bought it from the Internet and did not guarantee the repair.

I had no choice, so I found a place to repair electrical appliances and spent 50 yuan to repair it. This summer, I found that the refrigeration pump was broken again, and then I found someone to repair it, and people said that there was no water pump, and now it can only be used as an electric fan. If you want to buy an air conditioning fan, it's best not to get your hopes up.

Just buy it and blow the wind.

I took the air conditioning fan apart and looked at it, the principle of heating is that there is an electric heating plate in front of the fan, and the principle of cooling is to pump water behind the fan to make a water curtain. There's really no technology in it.

When using the air conditioner fan, you need to add ice or water. It will be more comfortable than a normal fan, but because adding water or ice will blow out the water, it is also easy to get arthritis.

The air conditioning fan is useless, it is not as good as the electric fan, the air conditioning fan is a pit, and it is very troublesome....

Air conditioning fans are more troublesome to use than air conditioners, and some need to add water and ice or something. More importantly, the humidity of the air conditioning fan is heavier, and it is best to use it less if there are elderly people or people with poor bones. Actually, the fan is fine.

Emmet, Lianchuang, and Keruilai all have air conditioning fans, and the quality is about the same

Too low voltage? Sweat is too much total power, which will damage electrical appliances and easily cause tripping, so as not to catch fire, the air conditioning fan is more troublesome than the air conditioner and consumes electricity, and some need to add water and ice or something. More importantly, to make.

The humidity of the air conditioner fan is heavier, and it is best to use it less if there are elderly people with bad legs and feet or muscles and bones. In fact, there are two empty spaces in the house.

Tune, just use the fan to blow it. It's not the same cold wind.

Midea, Emmet, Lianchuang and Keruilai all have air conditioning fans, and the quality is worth the price, and they should be wise to dialectically by themselves.

Not necessarily, the wind blowing out is humid, and blowing too much is not good for the body.

Not good, if the air is dry, it's okay to buy.

Dizzy, this problem? It is not said that the fan blades are windy, mainly because of the angle of the fan blades, the angle of the wind can be large, but the angle is large, the load of the fan is large, which is easy to cause the motor to overheat and affect the life, so this kind of matching problem manufacturers are designed in the design, it is best not to change it casually, so that it will cause vibration and noise, and the heavy will burn out the motor or have other dangers.

See if there is a bayonet at the root of the thread:

Hold the root of the blade with your left hand and tap the center shaft with your right hand. Don't break the threads.

You'll need to tear off the screws and solder them on.

Hey, I've asked this question before. You're talking about electric fans and wind power fans, this structure is actually the perfect balance of manufacturing cost, manufacturing process, and smooth operation. In fact, there are more than three fans nowadays, and many computer fans are five or more.

I remember seeing it before, eight pieces is the best balance between noise and efficiency, and submarines are like this.

To give you my question from '07.

It's easy to balance, it's hard to balance if it's too much, and most of the fan blades you see are also 3 pieces. Too little is not efficient.

In fact, there is currently a kind of patent in Europe, 2 leaves, placed vertically, the efficiency can be doubled!

It's not artificial, as long as it exists, it's reasonable, and the number of fan blades is not directly related to performance! It depends on the parameters of its design and the use of **.

It is easy to manufacture, low production cost, good mechanical strength, less leaf and less noise.

Less wind, less wind, more affects heat dissipation.