離心風機：壓頭大、流（liú）量小。軸流風機的氣流方向垂直與葉片的旋轉方（fāng）向，離心風機的（de）氣流方向切於（yú）葉片旋轉方（fāng）向。選用（yòng）什（shí）麽形式的風機最主要的是考慮流量及係統阻力損失.軸流風機的特點是流體沿著（zhe）扇葉的軸向流過。比（bǐ）如電風扇（shàn）和（hé）家庭裏的排氣扇（shàn）。而離心式是將流體從風扇（shàn）的軸向吸入後利用離心力將流體（tǐ）從圓周方向甩出去，比如鼓風機，抽油煙機.軸流風機:流量大（dà）、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.
離心風機較之軸流風機，最大的（de）缺點就是體積大，正因為兩者的構造不同，在相同（tóng）風量，相同（tóng）風壓的情（qíng）況下，離心風機的耗電量要比軸流風機大很多，但是噪音會（huì）相對小，所以軸流（liú）風機多用在消防通（tōng）風方麵，平時（shí）使用的風機多選用離心風（fēng）機。 在酒店類高檔的建築裏，很（hěn）多要（yào）求優先使用離心風機
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，就是與風（fēng）葉的軸同方（fāng）向的氣流。離心，靠離心（xīn）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（liú）向和軸是平行的就叫軸（zhóu）流風機，(比如消防的排煙風機)反之就是離心風機，(比如風機盤管的風機（jī）).
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).
軸流風機和櫃（guì）式離心風機的根本區別在風機的機械結構上：
The fundamental difference between axial fan and cabinet centrifugal fan is in the mechanical structure of the fan.
軸流風機的葉片直徑局限於外殼的直徑，而離心風機就沒有這方麵的局限，可以（yǐ）采用（yòng）葉片前傾或後傾葉片，對風量風壓的要求適應更廣。而且（qiě）櫃內能做消聲處理，在噪聲指標上有很明顯的優勢。
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（bān）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，盡量采用櫃式離心風機，消防排煙不常用的係統，采用（yòng）高溫軸流風機更經濟合（hé）理（lǐ）!
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!
離心風機比軸（zhóu）流風（fēng）機在大風量和大風壓（yā）的組合選擇上更有優勢(主要指風機效率和噪聲指標上)!
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（xīn）風機和軸流風機區別在於：
The difference between centrifugal fan and axial fan is that:
1、離心風機改變了（le）風管內介質的流向，而（ér）軸流風機不改變風（fēng）管（guǎn）內介質的流向;
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、前者風量和風壓都（dōu）很大，後者風量和風壓都很低（dī）;
2, the former has great air volume and wind pressure, and the latter has low air volume and wind pressure.
3、前者安（ān）裝（zhuāng）較複雜，後者安（ān）裝（zhuāng）較簡單;
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通過軸連接的，後者電機（jī）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（zhuāng）在空調機組進、出口處，鍋爐鼓、引風機（jī），等等（děng），後者常安裝在（zài）風管當中、或風（fēng）管出（chū）口前端。
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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