Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet
Patent
1998-01-20
1999-10-19
Ryznic, John
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having tangential inlet or outlet
4152081, F01D 102, F03B 104
Patent
active
059677473
ABSTRACT:
A collectorless vacuum fan for floor maintenance machines has a backplate with an inlet plate attached thereto in spaced relationship, and an impeller between the backplate and inlet plate. Both the backplate and the inlet plate extend radially beyond the periphery of the impeller. A shaft mounts the impeller for rotation. The inlet plate has a central opening providing air to the hub of the impeller. Vanes on the impeller discharge air out through a diffuser channel defined by the space between the inlet plate and the backplate outside the periphery of the impeller. Attachment elements for mounting the inlet plate on the backplate leave the diffuser channel substantially unobstructed so that air is discharged about the entire periphery of the impeller. The fan has increased air flow compared to a conventional fan having an integral collector housing and decreased noise compared to a fan having a 360 degree discharge and no diffuser.
REFERENCES:
patent: 1845152 (1932-02-01), Hutchinson
patent: 2264071 (1941-11-01), Dibovsky
patent: 2805615 (1957-09-01), Rudy
patent: 2987983 (1961-06-01), Solzman
patent: 3040646 (1962-06-01), Jueng et al.
patent: 3045579 (1962-07-01), Jenn et al.
patent: 3272137 (1966-09-01), Maitlen et al.
patent: 3489340 (1970-01-01), Holzhausen
patent: 3583826 (1971-06-01), Schonwald
patent: 3829250 (1974-08-01), Samson, Jr.
patent: 4082478 (1978-04-01), Schmitz
patent: 4448573 (1984-05-01), Franz
patent: 5161939 (1992-11-01), Stadler
Basham Michael T.
Burke Steven A.
Geyer Robert A.
Jensen Laurence A.
Ryznic John
Tennant Company
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