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Tunnel / jet fan

  • SDF (C) Three-speed Tunnel Fan
  • SDF (C) Three-speed Tunnel Fan
SDF (C) Three-speed Tunnel Fan SDF (C) Three-speed Tunnel Fan

SDF (C) Three-speed Tunnel Fan

  • Product description: The SDF (C) three-speed tunnel fan is a three-speed adjustable tunnel fan developed on the basis of a two-speed tunnel fan. It is most commonly used in tunnel fans. It has energy saving and easy operation. , Adjustable gears and other advantages.
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SDF (C) Three-speed Tunnel Fan

Working principle of SDF (C) tunnel fan

隧风机每级均由额定功率相同的风机专用电机驱动,叶轮直接装在电动机的轴伸上,相邻级间叶轮旋转方向相反。 Each stage of the SDF (C) tunnel fan is driven by a dedicated fan motor with the same rated power. The impeller is directly mounted on the shaft extension of the motor, and the impeller rotation direction between adjacent stages is opposite. After the gas enters the first-stage impeller to obtain energy, it is accelerated by the second-stage impeller and then expelled by the third-stage or fourth-stage impeller. The rear stage impeller also has the function of a stationary blade in an ordinary axial flow fan. While obtaining a straight circumferential velocity component, it increases the energy of the air flow, thereby achieving higher wind pressure and efficiency than the ordinary axial flow fan.

隧道风机的主要部件及其工作原理、工作特性 3. The main components of SDF (C) tunnel fans and their working principles and characteristics

隧道风机主要由集流器、主机体和扩散器4个主要单元组成。 SDF (C) tunnel fan is mainly composed of 4 main units: current collector, main body and diffuser.

The current collector is composed of an arc-shaped current collecting port and a shroud. Its main function is to reduce the local resistance loss of the air flow and create good air intake conditions for the main body;

The main body consists of main parts such as the casing, impeller and fan-specific motor. The casing is its bearing body, and its main function is to ensure the normal operation of the impeller and the motor, and also to serve as a muffler. The impeller is the core component of the host to generate wind current, and the motor is the power component that rotates the impeller. Its working principle is that the wind entering the main body flows into the impeller in the axial direction, deflected in the direction after acceleration, and flows into the next unit;

The diffuser is composed of a diffuser tube and a shroud. Its main function is to reduce the local resistance loss of the airflow outlet and improve the effective function of the fan. The airflow exits the fan in the axial direction and also serves as a rear muffler.

隧道风机的结构特点 Structural features of SDF (C) tunnel fans

隧道风机的性能参数、结构及安装尺寸见附表。 1. For the performance parameters, structure and installation dimensions of SDF (C) tunnel fans, see the attached table.

隧道风机由集流器、主机体、电动机、扩压器等部分组成,机体及结构件均采用钢板焊接而成,电动机与叶轮采用直联方式,传动可靠,整机结构简单紧凑,坚固耐用,使用安全,维修方便。 2. SDF (C) tunnel fan is composed of current collector, main body, motor, diffuser and other parts. The body and structural parts are welded by steel plates. The motor and impeller are directly connected, and the transmission is reliable and the whole structure Simple, compact, rugged, safe to use, and easy to maintain.

3. The motor adopts flameproof three-phase asynchronous motor for Y series fan, the voltage level is: 380V / 660V or 660V / 1140V.

4. It has the characteristics of high wind pressure, large air volume, high efficiency, low noise, and long air supply distance.

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