Pumps – Motor driven – Axial thrust balancing means for rotary pump and motor
Patent
1988-05-04
1990-08-14
Smith, Leonard E.
Pumps
Motor driven
Axial thrust balancing means for rotary pump and motor
4174233, 41742312, 417901, F04B 1702
Patent
active
049483480
ABSTRACT:
An immersion pump, especially for low-boiling fluids, having a support for a shaft and a ferromagnetic impeller wheel mounted to the shaft. The support includes at least one controllable electromagnet that operates to axially support and position the impeller wheel. An outlet path is also provided to enable vapor bubbles within the moving fluid to escape from the pump and be returned to the liquid supply.
REFERENCES:
patent: 3316849 (1967-05-01), Cooper et al.
patent: 3975117 (1976-08-01), Carter
patent: 4060250 (1977-11-01), Davis et al.
patent: 4523896 (1985-06-01), Lhenry et al.
patent: 4620752 (1986-11-01), Fremerey et al.
Berndt Hartmut
Doll Robert
Wiedemann Werner
Smith Leonard E.
Szczecina Jr. Eugene L.
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