Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part
Patent
1981-02-24
1984-02-21
Coe, Philip R.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
415172R, 415DIG1, 416186R, F04D 2916
Patent
active
044326947
ABSTRACT:
A centrifugal blower including a casing formed with a discharge port and a suction port, and an impeller mounted in the casing and having a plurality of backwardly curved vanes arranged circumferentially of the impeller. The suction port has a semicircular suction member located in spaced juxtaposed relation to a semicircular curled portion formed at the forward end of a shroud of the impeller. An annular guide plate may be attached to the inner side of the suction member and formed at its open end with a wall portion disposed along the shroud which is formed at its forward end with an annular wall extending into a space defined between the suction member and the guide plate. Hair may be provided on one of opposed wall surfaces of the suction member and the annular wall of the shroud.
REFERENCES:
patent: 1787656 (1931-01-01), Anderson
patent: 2305136 (1942-12-01), Campbell
patent: 3368744 (1968-02-01), Jenn
Arai Akira
Hanada Masamichi
Kuroda Sigeaki
Senshu Takao
Takahashi Mineo
Coe Philip R.
Hitachi , Ltd.
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