SCROLL CASING OF CENTRIFUGAL BLOWER, CENTRIFUGAL BLOWER EQUIPPED THEREWITH, ITS ASSEMBLING METHOD, AND INDOOR UNIT OF AIR CONDITIONER

摘要

PPROBLEM TO BE SOLVED: To provide a centrifugal blower in which the volume of a back-flow of the air, which has been blown from the air-outlets of an air blowing equipment, into the casing of thereof is made to be smaller without impairing the workability of an incorporating work, in the air blowing equipment having a construction that is dividable into a first scroll member having a tongue and a second scroll member comprising a scroll casing with the first scroll member being attached, and configured by incorporating the scroll casing of the centrifugal blower into the casing thereof. PSOLUTION: Scroll casings 31a to 31c include a scroll lower member 41 having a tongue 41a and a first end 41b corresponding to one part of openings 23a to 23c of a partition plate 23, and a scroll upper member 42 having a second end 42a comprising scroll air-outlets 35a to 35c as well as the first end 41b. The scroll lower member 41 has a back-flow preventing portion 41c that abuts to one part of the openings 23a to 23c of the partition plate 23 with the scroll lower member 41 being attached to the scroll upper member 42. PCOPYRIGHT: (C)2005,JPO&NCIPI