Hybrid Multi-stage Axial Fans for Air-Condition and Air-Conditioning System

摘要

PURPOSE: A complex multi-stage axial fan for air conditioning is provided to prevent the reduction of wind flow generated by the connection with a pipe of a different diameter by mounting a reducer to a rear part of the fan. CONSTITUTION: A complex multi-stage axial fan for air conditioning includes a streamline-shaped reducer(30) connected to a lower part of the axial fan in communication. The reducer includes inner and outer casings(33,32), and a plurality of straight stator vanes(34). The outer casing has a lower end in a size fitted with a pipe(72) at a circular duct. The inner casing is disposed radially inside with respect to the outer casing and has an inner diameter equal to that of a secondary dynamic wing(16). The stator vanes have radial inner ends fixed to the inner casing and radial outer ends fixed to the outer casing, so that the stator vanes are disposed on the outer periphery of the outer casing with a same interval.