We thought the invention of air conditioning would be like a car replacing a carriage and a ship replacing a boat. Even if central air conditioning can be seen everywhere in large shopping malls, it is still a cruel role in small scenes, such as home. How cruel is it? When the cicada rings, the electric cooling fan still has a seat. There is an old saying in China that “an old horse lies in the Carpinus, and his ambition is thousands of miles”. If you often blow the air conditioner, even you can bear the electricity bill, but can’t keep up with nutrition.
Therefore, the demand for electric cooling fans is still there, but the update frequency is very slow. In this slow development, we still want to talk about electric cooling fans with you – because different ages, different winds.
Since 1880, Americans have installed blades in motors. The blades rotate and the breeze comes slowly.
Here’s the problem. Looking back at the electric cooling fans more than 100 years ago, you can still recognize them as electric cooling fans. Unlike computers and cameras, you can’t recognize their functions from their original appearance. This involves a physical factor – Aerodynamics. Why can’t the electric cooling fan blade be square? The electric cooling fan blade can only be shaped like this?
According to the aerodynamics, we have a traditional electric cooling fan. In terms of appearance, the so-called “tradition” is like this:
From a deeper level, it is: noisy, ugly appearance, no app, the wind is too hard, the wind is close, not intelligent, too heavy. Where there are complaints, there are business opportunities.
Nowadays, new electric cooling fans are developing in the following three aspects:
From the appearance, we are tired of round, and then cooling tower fan appeared. Compared with other types of electric cooling fans, tower electric cooling fans have the following advantages:
1. It is fashionable, fresher than traditional electric cooling fans, and there is no sense of violation in any corner.
2. It is small and does not occupy space.
3. The air supply is softer than ordinary electric cooling fans, and the safety is very high. Children at home can use it safely.
With regard to wind, all electric cooling fans now want to be as close to natural wind as possible. What is natural wind? As the name suggests, it is the wind of nature.
The wind feeling is not broken and disordered, and it will stop occasionally, so why does the natural wind mode of the electric cooling fan stop occasionally, which will not blow people dizzy all the time. There is only one way to solve the problem that the wind sense does not break, that is without electric cooling fan blades. The bladeless fan came from this.
The principle of the bladeless fan is that the air is sucked into the base and ejected by the cyclone accelerator. The appearance is fashionable. Because there are no blades and dust, it can not only improve the cleaning problem but also prevent children from accidentally hurting their fingers.
Why can’t it be popularized with both appearance and natural wind? The hand dryer in the bathroom has been used by everyone. It can blow strong wind without electric cooling fan blades, but the hand dryer has a fatal problem – noise.
The highest gear of most electric cooling fans is between 60-65. It is said that the noise of the first bladeless fan of one brand is more than 70. It’s not cool of the low gear, and can not sleep of the high gear . It is said that the latest bladeless has greatly improved the noise problem, but the air volume is still a problem, and the high price is also a problem.
Of course, there are products such as “DC fan” in the electric cooling fan. It looks very traditional. Unlike the traditional electric cooling fans, it uses DC motor and the traditional electric cooling fan is AC motor.
What is AC motor and what is DC motor? We have to start with “electricity” – the electricity we are exposed to can be divided into DC and AC. In the essence of electricity, both have their own advantages. Let’s put it this way, DC is like an aircraft, point-to-point direct flight. AC is like a train. It goes round and round. Although it is not as stable as an aircraft, it is convenient to get on and off the station. Traditional electric cooling fans drive AC motors by AC, while DC variable frequency electric electric cooling fans convert AC into DC and then drive DC motors.
Some people may ask, why not use DC directly and have to convert from AC?
Edison once advocated that power stations directly use DC power to transmit to each household. In order to prove the harm of AC power, he directly used AC power to kill an elephant.
The problem is that it is still impossible to fully promote the use of DC power in power stations, because DC power is not conducive to long-distance transmission. If each household does not convert it, there is only one way, that is, build one power station per kilometer to your home.
The advantage of AC is that it is suitable for long-distance transmission, while the disadvantage is instability. Therefore, many electronic products need built-in converters to change AC to DC.
In recent years, this has finally come to the electric cooling fan. The advantages of the electric cooling fan after being given the DC motor are as follows:
DC fan is destined to be the mainstream “wind” of this era.
Conclusion:
Although the development of electric cooling fans is slow. But it has not been replaced by air conditioning. The streets are full of handheld electric electric cooling fans. In this slow accumulation iteration, as long as the time is long enough, the electric cooling fan is still the previous electric cooling fan, but it is not the previous electric cooling fan.
It’s “before”, as it only “blows”. It’s not “before”, as it carries a lot of technology. In addition to the above-mentioned ordinary wind and natural wind, it also adds ECO wind, that is, the air volume is adjusted with the ambient temperature, and the air volume increases automatically every one degree.
Some can also be controlled by voice, and the amplitude of the oscillation has changed from the traditional 60 ° and 90 ° to 120 ° or even 360 °. These seemingly non “explosive” functions are slowly stacked, precipitated and enabled in the electric cooling fan of small household appliance.
It’s no exaggeration to say that now you have a better sense of surprise than buying a mobile phone. This sense of surprise may not be big. It is precisely this small sense of surprise that makes people feel that everything has been completely transformed in the rapid development of this era. No matter how inconspicuous and simple, as long as it is not submerged, it naturally has a new posture.
When we face one new posture after another, we will feel from the bottom of our heart – this is the best era.
