国产精品99久久久久久董美香-国产精品99久久久久久www-国产精品99久久久-国产精品99久久99久久久看片-国产精品99久久-国产精品999在线

How to distinguish the quality of DC fans?

There are many brands of cooling fans on the market. If someone who doesn't know how to buy them, it is difficult to distinguish the quality of them. How to distinguish the quality of DC fan? The following DC fan manufacturer-Ruiapple Electronics will teach you a few points:

Frame: There are aluminum alloy and plastic on the frame, but generally the AC fan is made of aluminum alloy, and the DC fan is made of plastic (the 1751 DC fan frame is aluminum alloy). But even the frame of the same aluminum alloy is thick and thin. Moreover, the central axis in the aluminum alloy frame is very important. Good cooling fan manufacturers use copper central axis, and poor cooling fans generally use aluminum alloy.

Circuit board: Good cooling fan circuit boards are more complicated. Of course, the materials used can be compared at a glance. There are many small parts, while the poor cooling fan parts are few, which feels very simple.

Copper wire: The copper wire of a good cooling fan is relatively thick and strong, using manual winding, while the copper wire in a poor cooling fan is very thin. Of course, only for the same product, the smaller the fan, The copper wire will be thinner. Thick wire, but only one bad wire, very thin and simple.

Wire: The wire in a good cooling fan is made up of many thin wires intertwined together, and it is composed of a quiet cooling fan. As an electronic parts industry that will not decline, cooling fan manufacturers are also everywhere, and the quality is of course uneven. The quality of the cooling fan can be identified from two aspects, one is whether the parameters of the cooling fan meet the standard, and the other is whether the external material of the cooling fan is of high quality. The parameters can be tested, and the materials can only be seen through a professional appraisal.

Ball: This one introduces more, just remember, the ball is much better than the oil.

The material of the fan blade: It is also easy to distinguish. The stator of a good cooling fan is generally a steel stator, which is very strong.

Motor diameter: Due to the existence of the motor and the bearing, there must be no air flow through the blind zone in the central part of the DC fan main shaft. The diameter of the main shaft will determine the size of this blind zone. A large number of spindle diameters mainly depend on the power of the fan motor-the high power of the motor requires a larger stator winding coil, which must take up more space, without longitudinal expansion (increased height), and then must be expanded horizontally (increased area).

Blade curvature: In addition to a certain curvature in the cross section, the blades of the DC DC fan do not extend vertically in the radial direction on the overhead plane, but extend slightly in the direction of rotation.

You can clearly distinguish the above. It is not a problem to choose a high-quality DC fan. You can definitely choose a fan that you are satisfied with.