離心風機：壓頭大、流量小。軸流風（fēng）機的氣流（liú）方向垂直與葉片的旋轉方向（xiàng），離心風（fēng）機的氣流方向切於葉片旋（xuán）轉方向（xiàng）。選（xuǎn）用什（shí）麽形式（shì）的風機最主要的是考慮流量及（jí）係統阻力損失.軸流風機的特點是流（liú）體沿（yán）著扇（shàn）葉的軸向流（liú）過。比如電風扇和家（jiā）庭裏的排氣扇。而離心式是將（jiāng）流（liú）體從風扇的軸向吸入（rù）後利用離心力將流體（tǐ）從（cóng）圓周方向甩出去，比如鼓風機，抽油煙（yān）機.軸流風（fēng）機:流（liú）量大、壓頭小。
Centrifugal fan: large head and small flow. The flow direction of axial fan is perpendicular to the rotating direction of blade, and the flow direction of centrifugal fan is tangent to the rotating direction of blade. The most important thing to choose is to consider the flow rate and system resistance loss. The axial flow fan is characterized by the axial flow of fluid along the fan blade. For example, fans and household exhaust fans. The centrifugal type is the axial suction of fluid from the fan after the use of centrifugal force will be the fluid from the circumferential direction to throw out, such as blowers, smoke pumping machines.
離心（xīn）風機較之軸流風機，最大（dà）的缺點（diǎn）就是體積（jī）大（dà），正因（yīn）為兩者的構造不同，在相同（tóng）風量，相同風壓的情況下（xià），離心風機（jī）的（de）耗電量要比軸流風機大很（hěn）多，但是噪音會相（xiàng）對小，所以軸流（liú）風機多用在消防通風方麵，平時使用的風機多選用離心風機。 在酒店類高檔的建築裏，很（hěn）多要（yào）求優先使用離（lí）心風機
The biggest disadvantage of centrifugal fans is that they are bulky compared with axial-flow fans. Because of their different structures, centrifugal fans consume much more electricity than axial-flow fans under the same air volume and pressure, but the noise will be relatively small. Therefore, axial-flow fans are often used in fire fighting and ventilation. Centrifugal fans are selected. Ting Da import bearing Miss Wang in the high-grade hotel buildings, many require the priority use of centrifugal fan.
軸流，就（jiù）是與風葉的軸（zhóu）同方向（xiàng）的（de）氣流。離（lí）心，靠離心力把氣流甩出來的。
Axial flow is the same direction as the axis of the blade. Centrifugation, the air is thrown out by centrifugal force.
風的流向和軸是平行的就叫軸流風機，(比如（rú）消（xiāo）防的排煙風機)反之就是離心風（fēng）機，(比如風機盤管的風機).
The flow direction of the wind is parallel to the axis is called axial fan (such as fire exhaust fan) and vice versa is centrifugal fan (such as fan coil fan).
軸流（liú）風機和櫃式離心風機的根本區別在風（fēng）機的機械結構（gòu）上：
The fundamental difference between axial fan and cabinet centrifugal fan is in the mechanical structure of the fan.
軸流風機的葉片（piàn）直徑局限於外（wài）殼的直徑，而離心風機（jī）就沒有這方麵的局限（xiàn），可以（yǐ）采用葉片前傾或後傾葉片，對風（fēng）量風壓的要求適應更廣。而且櫃內能（néng）做（zuò）消聲處理，在噪聲指標上有很（hěn）明顯的優勢。
Axial fan blade diameter is limited to the diameter of the shell, and centrifugal fan has no limitations in this respect, can be used blade tilt forward or backward blade, wind pressure requirements to adapt to a wider range. Moreover, the cabinet can make noise reduction, and has obvious advantages in noise indicators. Ding Da import bearing Miss Wang
由於一般采用電機的轉數較低，電機功率大（dà），耗電相多多些。如果平時常用通風係統（tǒng），盡量采用櫃式離心風機，消防排煙不（bú）常用的係統，采用高（gāo）溫軸流風機更經濟合理!
Generally speaking, the number of motors is low, the power of the motor is large, and the power consumption is much more. If the usual ventilation system, try to use cabinet centrifugal fan, fire smoke exhaust system is not commonly used, the use of high-temperature axial fan is more economical and reasonable!
離心風機比（bǐ）軸流風機在大風量和大風壓的組合選擇上更有優勢(主要（yào）指風機效率和噪（zào）聲指標上)!
Centrifugal fans have more advantages than axial flow fans in the selection of combination of high wind volume and high wind pressure (mainly refers to fan efficiency and noise index)!
離心風機（jī）和軸流風（fēng）機區別在於：
The difference between centrifugal fan and axial fan is that:
1、離心風機改變了風管內介質的（de）流向，而軸流風機不改變（biàn）風管內介質（zhì）的流向;
1. The centrifugal fan changes the flow direction of the medium in the duct, while the axial fan does not change the flow direction of the medium in the duct.
2、前者風（fēng）量和風壓都很大，後者（zhě）風量和風壓都很低;
2, the former has great air volume and wind pressure, and the latter has low air volume and wind pressure.
3、前者安裝較複（fù）雜，後者安裝較簡（jiǎn）單;
3, the former installation is more complex, and the latter is simpler to install.
4、前者電機與風機一般是（shì）通過軸連接的（de），後者電機一般在風機內;
4, the former motor and fan are usually connected by shaft, and the latter motor is usually in the fan.
5、前者常安裝在空調機（jī）組進（jìn）、出口處，鍋爐鼓、引風（fēng）機，等等，後者常安裝在風管當中（zhōng）、或風管出口前端（duān）。
5. The former is often installed at the inlet and outlet of air-conditioning units, boiler drum, induced draft fan, etc. The latter is often installed in the air duct, or the front end of the air duct outlet.
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