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2019-12-11

DC fan manufacturers speed control mode

Voltage regulation 1. the external end of the DC fan: This type of speed regulation was widely used in the earliest speed regulation schemes. The main reason that speed regulation can be achieved is that the DC fan has a wide range of voltage adaptability. It is very wide and can work normally at 50% of the rated voltage, and the terminal voltage determines the speed. Therefore, most early speed adjustments are made in this way. At the same time, this speed control method is simple and low cost. The internal logic control circuit of the 2. DC fan is used for speed regulation: add a speed regulation signal to the DC fan to realize speed regulation. Speed control signal can be PWM signal, Vsp signal, adjustable

DC fan manufacturers speed control mode

2019-12-09

Dc cooling fan what pay attention to matters?

DC cooling fans are widely used in applications. Today, let's talk about DC cooling fans. What should be paid attention to when using in the mining room? Small braid you find out! As a cooling fan factory familiar with mining machines, we know that in the mining machine room, the temperature of the sauna room is very high, but if the temperature of the mining machine is very high, it will cause problems with the mining machine and will restart. Finally, it will have an impact on the operation of the mining machine. With the passage of time, it will also cause irreversible damage, which will greatly consume the life of the mining machine, so it is necessary to do a good job in the heat dissipation of the mining machine. DC cooling fans are used to dissipate the heat of the mining machine

Dc cooling fan what pay attention to matters?

2019-12-04

How to improve the quality of the cooling fan from the root?

1. Equipment parts Generally, a cooling fan is mainly assembled from a rotor, a stator, a frame, a motor (motor) and other small parts. The quality of these equipment parts directly determines whether the cooling fan can operate normally. Therefore, to improve the quality of the cooling fan, we must first master these parts. High-quality components can make the cooling fan have a longer service life and better heat dissipation effect. 2. R & D Department Generally, cooling fans must be carefully designed and tested by the department's R & D before production to ensure that all aspects meet production requirements and market demand. For example, when internal structural components and two

How to improve the quality of the cooling fan from the root?

2019-11-27

What is the difference between a DC fan and an AC fan?

1. Working principle: The working principle of the DC cooling fan: converts electrical energy into machinery through DC voltage and electromagnetic induction to drive the blades to rotate. Depending on the continuous switching of the coil and the IC, the inductive magnetic ring drives the blade to rotate. The working principle of the AC fan: driven by an AC power supply, the voltage alternates between positive and negative. It does not rely on circuit control and generates a magnetic field. The frequency of the power supply is fixed. The magnetic pole speed generated by the silicon steel plate depends on the frequency of the power supply. The higher the frequency, the faster the magnetic field switches, and theoretically the speed will be faster. However, the frequency should not be too fast, too fast will cause difficulties in starting. 2. Structure composition

What is the difference between a DC fan and an AC fan?

2019-11-25

How to design a cooling fan to prevent noise

Ways to reduce fan noise (1) Pay attention to fan selection: For frequently used fan products, the faster the speed, the better the fan's heat dissipation capacity, and the greater the noise. When we buy, we can put the fan next to our ears to listen. If we can clearly hear the noise of the fan, we recommend not to buy such a product. In addition, under normal circumstances, a fan with a relatively large diagonal length is worth buying, because in order to achieve the same heat dissipation effect, the speed of the large fan must be lower than the speed of the small fan, so the noise is relatively small (2) Strengthen the "lubrication" of the fan" . Due to low oil prices.

How to design a cooling fan to prevent noise

2019-11-20

Jiangshan to successfully participate in the India consumer electronics and home appliance exhibition CEI

The 17th 2019 China Commodities (Mumbai, India) Exhibition and @ Home India International Smart Home and Household Goods Expo and CEI India International Consumer Electronics and Household Appliances Exhibition "was solemnly held in Hall 4 of Mumbai International Convention and Exhibition Center, India on November 14, 2019.

Jiangshan to successfully participate in the India consumer electronics and home appliance exhibition CEI

2019-11-20

What is the principle of the blower? What is this?

The working principle of a centrifugal blower is similar to that of a centrifugal blower, except that the air compression process is usually carried out by several working impellers (or stages) under the action of centrifugal force. The blower rotor has high-speed rotating blades to drive the air to move at high speed. The centrifugal force causes the air to flow along the involute in the involute housing to the outlet of the blower. The high-speed airflow has a certain wind pressure. Fresh air is supplied from the center of the enclosure. Blower function: clean air, clean gas, sulfur dioxide and other inert gases can also produce and transport other flammable, explosive, corrosive, toxic and special gases as needed

What is the principle of the blower? What is this?

2019-11-18

Cooling fan noise causes and solutions

When the blades generate vortex, noise will also be generated during the operation of the fan, and vortex will be generated at the rear of the moving wing, which will not only reduce the efficiency of the fan, but also generate noise. During the operation of the fan, a vortex will be generated at the rear of the moving wing, which will not only reduce the efficiency of the fan, but also generate noise. In order to reduce this phenomenon, the installation angle of the blade should not be too large, and the bending of the blade should be smooth and should not change too much suddenly. In order to reduce this phenomenon, the installation angle of the blade should not be too large, and the bending of the blade should be smooth and should not change too much suddenly. 2 Blade rotation noise When the blades rotate,

Cooling fan noise causes and solutions
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