山洋风机有直流风机、交流风机、长寿命风机、离心风机、鼓风机等多种不同的类型，型号数量更是不下万种，也就是说选择一款合适的风机需要掌握一定的专业知识，今天就跟大家介绍一下山洋散热风机的选型方法。

　　There are many different types of Shanyang fan, such as DC fan, AC fan, long-life fan, centrifugal fan and blower, and the number of models is no less than 10000. In other words, selecting a suitable fan needs to master certain professional knowledge. Today I'll introduce the selection method of bulk hot air fan.

　　首先，要根据所需要风机的风量、全压这两个基本参数，就可以通过风机的有因次性能表确定风机的型号和机号，这时可能不止一个产品满足要求；然后再结合风机的用途、工艺要求、使用场合等，选择风机的种类、机型以及结构材质等以符合所需的工作条件，力求使风机的额定流量和额定压力，尽量接近工艺要求的流量和压力，从而使风机运行时使用工况点接近风机特性的高效区。具体原则如下：

　　Firstly, according to the two basic parameters of air volume and total pressure of the required fan, the model and machine number of the fan can be determined through the dimensional performance table of the fan. At this time, more than one product may meet the requirements; Then, combined with the purpose, process requirements and application occasions of the fan, select the type, model and structural material of the fan to meet the required working conditions, and strive to make the rated flow and rated pressure of the fan close to the flow and pressure required by the process as far as possible, so as to make the operating point of the fan close to the high-efficiency area of the fan characteristics. The specific principles are as follows:

　　1、散热风机的尺寸，尺寸大小要根据设备结构设计来选型，确认好尺寸之后再确认其他参数，一般尺寸小的风扇转速会偏高。

　　The size and size of the cooling fan shall be selected according to the equipment structure design. After confirming the size, confirm other parameters. Generally, the fan speed with small size will be high.

　　2、散热风机的轴承，轴承有分双滚珠轴承、液压轴承、含油轴承，三款轴承寿命、噪音都是从高到低。

　　The bearings of the cooling fan are divided into double ball bearings, hydraulic bearings and oil bearing. The service life and noise of the three bearings are from high to low.

　　3、散热风机的噪音，通常来讲噪音越小越好，越受用户追捧，但是噪音大小与风量、轴承等都有直接关系，我们应该结合实际环境来选型。

　　Generally speaking, the lower the noise, the better. It is more sought after by users. However, the noise is directly related to the air volume and bearings. We should select the type in combination with the actual environment.

　　4、散热风机的风量，风量越大说明风力也越大，风扇的散热性能越好，但随之噪音也会增大，其风扇的使用寿命也会受一定影响。

　　The larger the air volume of the cooling fan, the greater the wind power, the better the cooling performance of the fan, but the noise will also increase, and the service life of the fan will be affected to a certain extent.

　　5、散热风机的信号线选择，信号线是我们的一个小帮手。

　　Select the signal line of the cooling fan. The signal line is our little helper.

　　a、RD报警信号，是当风机停转时会发出报警信号，能够让我们及时处理并给予维修。

　　Rd alarm signal is an alarm signal that will be sent when the fan stops running, which can be handled and repaired in time.

　　b、FG测速信号，可以侦测出风机实时运行时的转速。

　　FG speed measurement signal can detect the speed of the fan during real-time operation.

　　c、PWM调速信号，调速信号可根据四季不同气候调节其转速，节省功耗和降低噪音。

　　PWM speed regulation signal, the speed regulation signal can adjust its speed according to different climates in four seasons, save power consumption and reduce noise.

　　d、温控信号，可以根据周围空气温度自动调节其转速。

　　The temperature control signal can automatically adjust its speed according to the ambient air temperature.

　　最后，需要注意的是，所选风机的型号应充分考虑到风机应用的设备、现场的安装需求及安全运行的环境等多方面的综合因素进行考量。当然如果您对风机的选型还是存在一些疑惑的话，请致电咨询我们，期待您的不吝来电！

　　Finally, it should be noted that the model of the selected fan should fully consider the comprehensive factors such as the equipment used by the fan, the on-site installation requirements and the environment for safe operation. Of course, if you still have some doubts about the fan selection, please call us and look forward to your generous call!