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Introduction of electric fan | Summer Household High Quality 110V 12 Inch Electric Stand Pedestal Fan | 20 inch pedestal stand fan
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1. The principle of the fan
In fact, the electric fan is a very grounded product, and does not have such complicated technical content. Its essence is that two motors are working, one is responsible for wind generation, and the other is responsible for swing synchronization. Even the bladeless fan that looks very tall now can't get around this principle.
2. The motor of the fan
Of course, simple principles do not mean that any manufacturer can do well. After all, the motor cannot be seen or touched, so how do we judge whether the fan is good or bad? First of all, we have to figure out a concept:
Motors are divided into DC motors and AC motors. I will not introduce their principles here, but only tell you their characteristics.
DC motor: small power, low voltage, very convenient for speed adjustment, just change the voltage. This also means that the wind blown by the DC motor is more controllable, and the so-called "natural wind" form can be more easily achieved by using algorithms. Of course, the noise is relatively small.
AC motor: high power, high voltage, there is no doubt that it has advantages in speed, air supply distance and wind control capacity.
From the current point of view, the DC motor fan will be the mainstream, because our current requirements for the fan will be more reflected in the noise and natural wind, in addition to it, it is more to play the role of auxiliary air conditioning refrigeration.
In addition, the fan also has the saying that frequency conversion, what is the role of frequency conversion?
The so-called frequency conversion is to add a frequency conversion speed regulator inside the fan. Its function is to change the current working frequency through the control system to increase the speed range. The real "natural wind" and "sleeping wind" are actually achieved through the control chip, not the old-fashioned 1, 2, 3, 3, 2, and 1 mode.
3. The position of the fan
Many people actually have a misunderstanding about the fan's gear position. What the fan should pursue is not how many gears can be adjusted, but how much the lowest speed can be achieved, and how much the highest speed can be achieved. The low gear should be soft and comfortable, and the high grade has strong air supply. Such a fan with 5-7 gears can also meet daily needs. There is no need to spend too much budget on the gear increase.
4. Fan blades of the fan
The fan blades of mainstream products are between 5 and 7 blades, and there are also some double-layer fan blades, the number of fan blades is 12, 17 or more. So, the more fan blades, the better the fan?
I don’t think it is. At least as far as my personal experience is concerned, the fan blades do not significantly improve the wind feel, because it is the motor that affects the operation of the fan blades. More fan blades do not mean high energy efficiency. For this reason, I even bought the same. Comparing the Emmett 5 leaf and 7 leaf, the result is that my wind experience is almost unchanged.
However, the design curvature of the fan blades does have an impact on the wind, which involves a lot of knowledge of wind mechanics beyond my cognition, but among the many fans I use, the wind feeling brought by the double-layer fan blades is indeed the same as Out of the ordinary! It is correct to spend the budget on improving the quality of the fan blades.
Summer Household High Quality 110V 12 Inch Electric Stand Pedestal Fan | 20 inch pedestal stand fan
1. The principle of the fan
In fact, the electric fan is a very grounded product, and does not have such complicated technical content. Its essence is that two motors are working, one is responsible for wind generation, and the other is responsible for swing synchronization. Even the bladeless fan that looks very tall now can't get around this principle.
2. The motor of the fan
Of course, simple principles do not mean that any manufacturer can do well. After all, the motor cannot be seen or touched, so how do we judge whether the fan is good or bad? First of all, we have to figure out a concept:
Motors are divided into DC motors and AC motors. I will not introduce their principles here, but only tell you their characteristics.
DC motor: small power, low voltage, very convenient for speed adjustment, just change the voltage. This also means that the wind blown by the DC motor is more controllable, and the so-called "natural wind" form can be more easily achieved by using algorithms. Of course, the noise is relatively small.
AC motor: high power, high voltage, there is no doubt that it has advantages in speed, air supply distance and wind control capacity.
From the current point of view, the DC motor fan will be the mainstream, because our current requirements for the fan will be more reflected in the noise and natural wind, in addition to it, it is more to play the role of auxiliary air conditioning refrigeration.
In addition, the fan also has the saying that frequency conversion, what is the role of frequency conversion?
The so-called frequency conversion is to add a frequency conversion speed regulator inside the fan. Its function is to change the current working frequency through the control system to increase the speed range. The real "natural wind" and "sleeping wind" are actually achieved through the control chip, not the old-fashioned 1, 2, 3, 3, 2, and 1 mode.
3. The position of the fan
Many people actually have a misunderstanding about the fan's gear position. What the fan should pursue is not how many gears can be adjusted, but how much the lowest speed can be achieved, and how much the highest speed can be achieved. The low gear should be soft and comfortable, and the high grade has strong air supply. Such a fan with 5-7 gears can also meet daily needs. There is no need to spend too much budget on the gear increase.
4. Fan blades of the fan
The fan blades of mainstream products are between 5 and 7 blades, and there are also some double-layer fan blades, the number of fan blades is 12, 17 or more. So, the more fan blades, the better the fan?
I don’t think it is. At least as far as my personal experience is concerned, the fan blades do not significantly improve the wind feel, because it is the motor that affects the operation of the fan blades. More fan blades do not mean high energy efficiency. For this reason, I even bought the same. Comparing the Emmett 5 leaf and 7 leaf, the result is that my wind experience is almost unchanged.
However, the design curvature of the fan blades does have an impact on the wind, which involves a lot of knowledge of wind mechanics beyond my cognition, but among the many fans I use, the wind feeling brought by the double-layer fan blades is indeed the same as Out of the ordinary! It is correct to spend the budget on improving the quality of the fan blades.
Summer Household High Quality 110V 12 Inch Electric Stand Pedestal Fan | 20 inch pedestal stand fan