Rotary kinetic fluid motors or pumps – Runner has spirally arranged blade or fluid passage – Extending along runner axis
Patent
1992-09-10
1994-01-25
Look, Edward K.
Rotary kinetic fluid motors or pumps
Runner has spirally arranged blade or fluid passage
Extending along runner axis
415 73, 415 90, 4151701, 415197, 415200, 416177, F04D 302, F04D 2902
Patent
active
052810860
ABSTRACT:
The invention is directed to a pump for pumping a viscous fluid. The pump includes a stator body and a rotor body rotatably mounted in the stator body so as to be coaxial therewith. The stator body has a wall structure having a spiral slot formed therein which communicates with a suction connection formed in the stator body for conducting the viscous fluid to be pumped into the slot. A pressure connection is formed in the stator body for conducting the viscous fluid out of the slot. The suction connection and the pressure connection open into respective peripheral annular slots which are formed between a total of at least three sealing rings on the outer surface of the stator body. The channels for liquids provided in a housing can be disposed in any rotational position relative to the stator. This affords the advantage that the pump stator can be seated with any rotational position in a receiving cylinder of the housing. The sealing rings are injection molded on the stator body to define a tight seat in the receiving cylinder of the housing without additional seals. By a simple insertion of the pump rotor, a connection between the connections of the pump and the channels in the housing is provided which is tight with respect to the medium under pressure.
REFERENCES:
patent: 4270882 (1981-06-01), Luijten et al.
patent: 4684317 (1987-08-01), Luijten et al.
Geyer Werner
Nickel Hans
Schierling Roland
Wissmann Michael
Lee Michael S.
Look Edward K.
Ottesen Walter
Stihl Andreas
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