Product Specifications

Features: High efficiency, low noise, simple structure, and reliable operation. (It can produce three types of mixed-flow fans: single-speed, dual-speed, and medium-pressure, as well as special-purpose mixed-flow fans, including roof-mounted, explosion-proof, and anti-corrosion types.)

Uses: Air supply and exhaust for industrial and mining enterprises and high-rise civil buildings.

Specifications:

Ventilator diameter: Φ250~1500mm，

Air volume: 1250~96000m³/h，

Wind pressure: 120~1200Pa

Product Overview

Overview

The SWF (HLF) series low-noise mixed-flow ventilators are listed in the national "Spark" plan project. Developed jointly by Shanghai Jiao Tong University, they are energy-saving ventilation equipment promoted for production.

Aiming at the common mismatch in ventilation and air conditioning systems—where fan pressure is too high but flow rate insufficient, or flow rate too large but pressure inadequate—this series optimizes system matching to enhance energy efficiency. It is a new-type product suitable for pipeline pressurization systems among current ventilators.

Applications

Widely used in ventilation and air conditioning systems of industrial and civil buildings, especially for pipeline pressurization and air supply.

SWF (HLF)-I type can replace high-pressure axial fans.

SWF (HLF)-II type is a dual-speed fan for dual-purpose use.

SWF (HLF)-III type can replace medium-high pressure centrifugal fans.

Structure and Features

Basic structure: Inlet and outlet on the same axis (axial flow structure), with a conical hub and blades of unequal width along the flow direction.

Casing types: Straight cylinder, drum shape, or with arc-shaped silencer at the inlet.

Based on the principle of meridional acceleration of airflow, the fan integrates dual characteristics of centrifugal and axial flow—offering both high pressure and large flow rate, along with advantages of high efficiency, low noise, and a wide high-efficiency zone.

Features compact structure, light weight, convenient installation, and small floor space.

Installation and Operation

Can be installed horizontally, vertically, or on ceilings.

Suitable for air extraction, air supply, and pipeline pressurization.

Product Parameters and Description

Performance Parameters Table of SWF-I Type Mixed-Flow Fan

Performance Parameters Table of SWF-II Type Dual-Speed Mixed-Flow Fan

Outline Dimensions and Installation Dimensions of SWF-I Type Mixed-Flow Fan

Outline Dimensions and Installation Dimensions of SWF-II Type Dual-Speed Mixed-Flow Fan

SWF-IV (HLF) Series Low-Noise Mixed-Flow Fan Casing