Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing with mounting means
Patent
1996-03-08
1996-12-24
Kwon, John T.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing with mounting means
415119, 165 803, 361695, F04D 2960
Patent
active
055868657
ABSTRACT:
Computer apparatus 10 has enhanced convective flow 10F of circulating cooling air provided by improved fan 12. Fan support 12S is secured to the computer apparatus proximate fan port 10P formed in the housing. Fan blade 22B is rotatably mounted within fan support 22S. The propelling action of the fan blade defines a transition path for the cooling air through the fan. Stationary screen 24S is positioned adjacent to the blade traversing the transition path. Transition chamber 26 formed between the screen and the blade also traverses the transition path. The width of the transition chamber defines a transition gap dimension from the screen and to the blade that is optimally selected to enhance the cooling air flow. The transition chamber has a screen region 26S adjacent the screen and a blade region 26B adjacent the blade, and a middle region 26M between the screen region and the blade region. Cooling air flow through the screen and the screen region is generally linear. Cooling air flow through the blade and the blade region has a rotational component. When the transition gap dimension is an optimal, the middle region of the transition chamber is sufficiently wide to allow a flow transition between the linear flow and the rotational component flow. Transition spacer 24T extends between the screen and the blade maintaining the transition gap at a dimension sufficient to substantially isolate the linear flow through the screen region from the effects of the rotational component flow through the blade region.
REFERENCES:
patent: 5202816 (1993-04-01), DeWilde
patent: 5210680 (1993-05-01), Scheibler
patent: 5475562 (1995-12-01), Gow
Hentzel Paul
Kwon John T.
Micronics Computers Inc.
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