Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Patent
1994-04-01
1995-09-12
Look, Edward K.
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Turbine regenerative pump
415 553, F04D 500
Patent
active
054492696
ABSTRACT:
An aggregate for feeding fuel from a supply tank to an internal combustion engine of a motor vehicle has a fluid pump having an impeller with a plurality of vanes distributed over its periphery on its both end surfaces, elements forming a pump chamber in which the impeller is rotated and including two wall parts limiting the pump chamber in direction of a rotary axis of the impeller at both sides and a housing part limiting the pump chamber in a radial direction, each of the wall parts having an end surface facing the impeller and being provided with a substantially ring-shaped feeding passage, at least one of the feeding passages having a connection with a suction side of the flow pump and at least the other of the feeding passages has a connection with a pressure side of the flow pump. The impeller and the housing part are arranged so that a radial gap between an outer surface of the impeller and an inner surface of the housing part at least in a peripheral region of the housing part in which the connection of the one feeding passage with the suction side is provided has such a size that a suction passage is formed through which the other feeding passage is also connected with the suction side of the flow pump. For limiting the suction passage in a peripheral direction near the suction passage, peripheral regions are arranged in which the radial gap is smaller.
REFERENCES:
patent: 4591311 (1986-05-01), Matsuda et al.
patent: 4653979 (1987-03-01), Schillinger
patent: 5160249 (1992-11-01), Iwai et al.
patent: 5192184 (1993-03-01), Nobuo et al.
patent: 5215429 (1993-06-01), Sun
patent: 5310308 (1994-05-01), Yu et al.
patent: 5336045 (1994-08-01), Koyama et al.
patent: 5338151 (1994-08-01), Kemmner et al.
Frank Kurt
Treiber Juergen
Lee Michael S.
Look Edward K.
Robert & Bosch GmbH
Striker Michael J.
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