Patent ID: 6443691
Filing Date: 2002-09-03
Classification: F04D

Abstract:
A feed pump, comprising a casing comprising part-annular channels, an inlet duct, and an outlet duct and a driven impeller rotatably arranged in said casing and comprising a first end face, a second end face, and a ring of guide vanes delimiting vane chambers which pass through said driven impeller from said first end face to said second end face of said driven impeller, wherein said vane chambers and said part-annular channels define a feed chamber in said casing for feeding a liquid from said inlet duct to said outlet duct, each of said vane chambers comprising at least two sectors adjoining one another, wherein each of said two sectors is contiguous to one of said first and second end faces and said each of said two sectors comprises an undercut-free design relative to a direction perpendicular to said one of said first and second end faces so that a projection in the form of said each of said two sectors may be removed from said impeller in the direction perpendicular to said one of said first and second end faces without obstruction.