标准摘要
[中文适用范围]： 此文件规定了通用风机圆形和矩形法兰的尺寸，以及风扇尺寸代号。不适用于横流风机或用于家庭或其他类似用途的风机装置。对于圆形法兰，提供了三种不同的法兰系列：一种用于轻型壳体厚度，另一种用于中型风机，第三种用于重型风机（通常用于海船或重工业）。为了不过分限制风机设计，在未指定法兰厚度的情况下，内部和外部法兰直径以及法兰厚度可根据良好的工程实践自由选择。 [外文原描述]： This document specifies the dimensions of the circular and rectangular flanges of general‑purpose fans, as well as the fan size designations. It is not applicable to cross‑flow fans or to fan appliances used for individual household or similar applications. For circular flanges, it provides for three different flange series: one for light‑duty casing thicknesses, another for medium‑duty fans and the third for heavy‑duty fans as used on sea-going vessels or in heavy industry. In order not to restrict fan design unduly, only the pitch diameter, hole numbers and hole diameters are specified. Flange thickness, as well as internal and external flange diameters, can be chosen freely within the limits of good engineering practice.
英文名称Fans — Dimensions