JPS6446000A - Blower device for automobile air conditioner - Google Patents

Abstract

PURPOSE:To promote the improvement of blower performance and the reduction of noise by arranging a partitioning part and an outlet part of an air passage to be positioned in an equal level for a flow of air while guiding a sound- absorbing material to the partitioning part, in the case of a bell mouth which is arranged in the air introducing side of a centrifugal fan comprising the air passage and the partitioning part. CONSTITUTION:A centrifugal fan 2, turned by a motor 3, is arranged in a scroll 1, and a duct 5, providing an outside air introducing port 5A and an inside air introducing port 5B, is arranged interposing a bellmouth 4 in a suction port of this centrifugal fan 2. Supporting a damper 6 to be pivotally mounted in the duct 5, either the introducing port 5A or 5B can be closed. The bellmouth 4 is constituted of an air passage, comprising an inlet part 4A of air and its outlet part 4B, and a partitioning part 4C between the scroll 1 and the duct 5. In the blower device thus obtained, the bellmouth 4 forms its outlet part 4B to be positioned in an equal level to that of the partitioning part 4C for a flow of air. While a sound-absorbing material 8 is glued to the partitioning part 4C in its side of the duct 5.