High-temperature pump assembly with fluid diverting ribs

Details High-temperature pump assembly with fluid diverting ribs High-temperature pump assembly with fluid diverting ribs

F - Mech Eng,Light,Heat,Weapons

04

D

103/120, 141/17,

F04D 29/08 (2006.01)

Patent

CA 2030319

PA-5735-0-DW-USA ABSTRACT OF THE DISCLOSURE A motor-driven high temperature rotary pump assembly including a pump housing, a motor with a rotary drive shaft, and a seal between the shaft and the housing. Lubrication of the seal and the prevention of "seal squeal" is achieved by the provision of diverters to prevent the formation of a laminar vortex in the chamber, and to divert fluid onto the seal. The diverters may take the form of radially opposed ribs extending from the interior of the pump housing. The invention is particularly useful in domestic appliances such as automatic dishwashers in which the temperature of the washing fluid is commonly in the range of 120° to 160°F. . 13

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