Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2011-04-12
2011-04-12
Kramer, Devon C (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S423100, C415S108000, C415S214100
Reexamination Certificate
active
07922466
ABSTRACT:
The invention relates to a radial fan (1), preferably a high-speed radial fan, comprising a blower wheel (8), a housing (2) which receives a rotor (6) and a stator (5) of an electrical drive (4) of the blower wheel shaft (7), and a cooling system. The aim of the invention is to develop one such radial fan in terms of the cooling system required. To this end, paths (30, 37) for a first cooling medium (K1) and a second cooling medium (K2) are provided in the housing (2), the second cooling medium (K2) being cooled by the first cooling medium (K1) as provided for by the housing (2), and the paths (30, 37) are separated from each other by intact material walls (40) of the housing (2).
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Silicon carbide, http://en.wikipedia.org/w/index.php?title=Silicon—carbide&oldid=384207959 (last visited Sep. 11, 2010).
Diedrichsen Frank
Radermacher Bernhard
von Kathen Achim
Collard & Roe P.C.
Gebr. Becker GmbH
Kramer Devon C
Weinstein Leonard J
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