Patent ID: 6309180
Filing Date: 2001-10-30
Classification: F04D,F05D,H02K

Abstract:
A diffuser plate for diffusing air from a fan, wherein the fan and the diffuser plate are enclosed by a shroud, which has an air intake aperture, that is coupled to a motor housing which has a generally cylindrical cup portion from which extends a circumferential flange portion, the diffuser plate comprising:a main body portion having a first side adjacent the fan, opposite a second side adjacent the circumferential flange portion, said main body portion having a shaft aperture extending therethrough;a plurality of scallops disposed around an outer periphery of said first side, each said scallop including a curved wall and a curvilinear ramp surface which terminates at an air inlet aperture that extends through to said second side; anda plurality of curvilinear walls extending from said second side to define air chambers therebetween which are open to corresponding said air inlet apertures, each said curvilinear wall extending from a corresponding curved wall toward, but terminating prior to reaching said shaft aperture, and wherein said curvilinear walls are separated apart and disconnected from each other.