Gear pump for use in an electrically-operated sealed compressor

Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – With pump for non-working fluid

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418 89, 184 616, F04C 2902

Patent

active

061168777

ABSTRACT:
A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting the rotational force of the electric motor to the compression mechanism. The gear pump includes a pair of gears being in mesh with each other, one of which is connected to one end of the crankshaft, and a pump casing accommodating only the pair of gears. The pump casing together with the gear pair is disposed on one side of a cover plate, while other elements constituting the gear pump are disposed on the other side of the cover plate. By this construction, the distance between the gear pair and an auxiliary bearing to which the gear pump is secured can be reduced and, hence, an undesirable whirling of one end portion of the crankshaft can also be reduced.

REFERENCES:
patent: 1834976 (1931-12-01), Schmidt
patent: 2446194 (1948-08-01), Samiran
patent: 2865301 (1958-12-01), Thomas
patent: 2975964 (1961-03-01), Osterkamp
patent: 3088660 (1963-05-01), Voggenthaler
patent: 3135460 (1964-06-01), Galin
patent: 3260444 (1966-07-01), Williams et al.

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