Patent ID: 7462013
Filing Date: 2008-12-09
Classification: F01P,F04D

Abstract:
1. A blower comprising: a blade wheel for producing air flow which is an axial flow type fan and in which air flows through the blade wheel in an axial direction of a rotating shaft of the blade wheel; a driving source for rotating the blade wheel; and a stationary shroud surrounding an outer circumference of the blade wheel so as to cover it; and a ring formed in an annular shape so as to connect top ends of blades of the blade wheel and in which one end of the ring is extended toward the stationary shroud, wherein a discharge water opening area is opposed to the end of the ring for discharging water stored between the stationary shroud and the blade wheel is provided at a lower side of the stationary shroud to the axis of the blade wheel and on an annular ring portion of the stationary shroud; and the opening area is formed at a position opposite to the ring so that the opening area is opposed to a substantially entire area of a width of the ring.