Radial fan

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet

Reexamination Certificate

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Details

C415S206000, C415S211100, C416S18600A, C416S228000, C416S22300B

Reexamination Certificate

active

10807526

ABSTRACT:
The invention relates to a radial fan with a casing and in it an axially placed wheel, wherein the casing has an axially placed air inlet, an exhaust (5), a bottom section (6) with a bottom reference surface (7) arranged orthogonally to the axis and a spirally shaped compression space located radially around the wheel that extends to the exhaust port; and wherein the wheel has a cover disk that faces the air inlet port and a supporting disk; wherein the radial fan is characterized in that the spiral-shaped compression space (8) expands both in a radial direction from the axis towards the exhaust port (6) as well as in an axial direction; wherein the axial expansion extends over at least 180° of the spiral circumference; and in which a hollow cylindrical cup-shaped section (9) is recessed in the bottom section (6) in an axial direction beyond the bottom reference surface (7) into which the wheel is placed in such a way that an inside of the supporting disk of the wheel runs flush with the bottom reference surface (7).

REFERENCES:
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patent: 2002/0106277 (2002-08-01), Chapman
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patent: 29818179 (1999-03-01), None
patent: 100 17 808 (2001-06-01), None
patent: 10231983 (2003-06-01), None

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