Water pump and manufacturing method thereof

Details Water pump and manufacturing method thereof Water pump and manufacturing method thereof

1998-07-27

2000-10-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

With lubricating, sealing, packing or bearing means having...

For shaft sealing, packing, lubricating or bearing means

4151682, 4151742, F01D 1100

Patent

active

061263885

ABSTRACT:
A water pump is capable of avoiding adverse influence of water leakage from a swirl chamber to a bearing. The water pump includes a pump housing, a rotary shaft supported by a bearing mounted on a boss portion of the pump housing, an impeller fixed on an end portion of the rotary shaft extending into a swirl chamber defined within the pump housing, and a mechanical seal disposed between the impeller and the bearing. The water pump further includes a seal ring disposed within a space defined between the mechanical seal and the bearing for dividing the space into a first and second vapor chambers with drain holes provided for respective first and second vapor chambers.

REFERENCES:
patent: 3474733 (1969-10-01), Saletzki et al.
patent: 3632220 (1972-01-01), Lansinger
patent: 4172310 (1979-10-01), Mincuzzi
patent: 4380416 (1983-04-01), Menager
patent: 5558491 (1996-09-01), Andrews
patent: 5827041 (1999-10-01), Charhut

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