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Fan Blower

Fan blower fans with a pressure ratio of up to 1.11 are generally considered. The pressure ratio here is defined as the ratio of the fan discharge pressure to the fan inlet pressure, sometimes called the suction pressure. The pressure ratio of 1.11 and lower in the world of turbo machines is very low. Consider a fan you may have in your living room to help keep summer cool. The purpose of this technique is to create a forced cooling of the skin convection by moving air in the body at a suitable speed. The increase in pressure required to do this is small. The fan should only rely on local fan losses, including losses in the fan blade, loss of resistance of the part Other fans, such as fan cages, and downstream mixing losses prevail. The pressure is only upstream and downstream of the peripheral fan, so the increase in pressure generated by the fan quickly overcomes these local losses. The pressure ratio for the fans can be so low (perhaps 1.01) that the increase in fan pressure is typically given at the head rather than the pressure ratio, for example, 2 inches of water. In general, fans are devices that move more gas with a very low pressure increase.

What is the difference between a fan, a blower and a compressor?

Turbomachine equipment is generally classified according to whether it extracts energy (eg turbine) or adds energy (eg pumps and compressors). Excess energy is usually used to compress or move fluids. When the fluid is gaseous, car turbo equipment is commonly known as a fan, blower or compressor. This blog will examine the differences between these three devices and where they are used. It is important to note that the name of the turbo car is not standard and can vary from country to country and industry to industry. In fact, some definitions in the turbo industry Machines can look completely arbitrary! As a general rule, the industry recognizes certain differences between fan, blower and compressor. While all three devices increase the pressure in a gas and have the corresponding flow capacity, they vary according to the amount of pressure created by each device and the resulting application. Let’s take a look at each one in turn.

Types of axial flow fans

Advantages: Produces high airflow at low pressure. It does not connect to the channel due to low pressure. Because of its simple construction, it is inexpensive and most efficient if installed on the roof. It can create a reverse air flow that is used in air conditioning. Disadvantages: It does not have high efficiency in general and has a lot of noise. Axial tube: Advantages: It has higher pressure and better performance than impeller fan. It is suitable for medium pressures with high flow. Disadvantages: Expensive relatively slow operating speed. Axial blade: Advantages: Suitable for medium upward pressures. Can be used in a short time. Reach the desired speed. And the ability to generate current in the direction The reverse is suitable for direct connection to the motor shaft if it is equipped with airfoil, up to 85% efficiency. Disadvantages: Compared to butterfly fan, they are expensive. Centrifugal fan (centrifugal): This fan is often referred to as a squirrel cage or scroll fan. This fan has a moving component called the impeller which is connected to the blade assembly through the shaft. The centrifugal fan draws in air and expels it violently as the blades rotate (centrifugal force), increasing the velocity at the end of the blade and turning it into pressure. These fans are capable of operating at high pressures and can work well in harsh operating conditions, high temperatures, and dirt and humidity.
Cross-flow fan: A tangential or cross-flow fan is sometimes known as a tube fan. This type of fan is widely used in air conditioning. Cross-flow fans consist of a forward-curved blade housed inside a vortex chamber. The main current moves from head to toe of the impeller and hits the blades, increasing the pressure. Asia

Vacuum Pump Industries


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