FAN HOUSING

摘要

A fan housing (10), comprising: an air intake volute housing (11) for air intake, a hollow wheel unit (14) provided at the center of the air intake volute housing (11), and a diffusion tube (12) connected to the air intake volute housing (11) and used for air outflow; and at least the width of the air intake volute housing (11) in the fan housing (10) is continuously variable. Compared to an air conditioning indoor unit employing a traditional fan housing, the air conditioning indoor unit employing said fan housing (10) effectively reduces rotational speed of the fan and noise.