What is the basis for the selection of the cooling fan of the cabinet?clip fan wholesale

　　For some production industries and medical industries, cabinets are very important. The cooling fan of the cabinet can play the role of cooling and ventilation in the cabinet, so that the machinery inside the cabinet can operate normally. The performance of the cabinet cooling fan is very important. Let's take a look at how to select the cabinet cooling fan.

　　The selection method of the cooling fan of the chassis cabinet:

　　1. Mixed flow fan. Mixed flow fans are also known as diagonal flow fans. Mixed-flow fans are no different from axial fans. In fact, the intake of mixed-flow fans is along the axis, but the exhaust is along the diagonal direction of the axis and the vertical axis. Due to the conical shape of the blades and the cover, this kind of fan has a higher wind pressure, and the noise of the centrifugal fan is lower than that of the axial flow fan under the same size and other comparable performance.

　　2. Centrifugal fan. The blades push the air to flow in a direction perpendicular to the axis (ie radial direction). When the centrifugal fan is working, the intake air is along the axis direction, while the air outlet is perpendicular to the axis direction. In most cases, the cooling effect can be achieved by using an axial fan. However, sometimes a centrifugal fan is necessary if the airflow needs to be rotated by 90 degrees or when a larger air pressure is required. Strictly speaking, the fan is also a centrifugal fan. 3. Cross-flow fan. It is usually used to cool the large surface of the equipment. The air inlet and outlet of this fan are perpendicular to the axis. The cross-flow fan uses a relatively long barrel-shaped fan impeller to work. The cross-flow air flow can generate a large area of wind flow. The diameter of the barrel-shaped fan blades is relatively large. Because of the large diameter, it is possible to use a relatively low speed on the basis of ensuring the overall air circulation, thereby reducing the noise caused by high-speed operation.

　　1. When choosing a cooling fan, people often compare the wind pressure and air volume. For normal ventilation, the wind pressure and air volume need to overcome the resistance in the ventilation stroke of the cooling fan, and the cooling fan must generate pressure to overcome the air supply resistance. It's wind pressure. The wind pressure mainly depends on the shape, area, height and rotation speed of the fan blade. The faster the rotation speed, the larger the fan blade. The higher the wind pressure is, the better the air duct design of the heat sink can maintain the wind pressure of the fan.

　　2. When choosing a cooling fan, what we need to know is that the more vertical the fan blades of the cooling fan are, the larger the wind section, the greater the air volume generated, and the greater the wind shear noise; Less wind, not to mention heat dissipation. And the number of fan blades and the design of the fan blades will also have a great impact on the air volume and wind pressure. The design of the cooling fan blades has an obvious impact on the performance of a fan. At the same speed, products with excellent blade design can provide greater air pressure and air volume, resulting in better heat dissipation.

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