Patent ID: 6659719
Filing Date: 2003-12-09
Classification: F04D,Y10S

Abstract:
A ventilator housing (1) of a ventilator comprising:a flow passage (2) having an intake opening (4) and an outlet opening (6); outflow contouring means (12) arranged about the outlet opening (6) and configured to at least reduce a vortex formation within a shearing layer (16), generated during operation of the ventilator so as to surround an actual airflow (18) of the ventilator and located between the airflow (18) and surrounding air; wherein the outflow contouring means (12) are comprised of individual contour elements (14) distributed in a peripheral direction of the outlet opening (6) and projecting from an edge area of the outlet opening (6) at least partially into an area of the shearing layer (16b); wherein several of the contour elements (14) are slantedly oriented axially and radially outwardly; and wherein first ones of the contour elements (14) extend slantedly axially and radially outwardly and second ones of the contour elements (14) extend slantedly axially and radially inwardly, wherein the first and second contour elements (14) alternate in the peripheral direction of the outlet opening (6).