Pumps – Motor driven – Electric or magnetic motor
Patent
1998-07-20
2000-10-10
Freay, Charles G.
Pumps
Motor driven
Electric or magnetic motor
4174237, 41742314, 416223R, 416DIG2, 416DIG5, 416243, F04B 1700, F04D 2938
Patent
active
061295280
ABSTRACT:
An axial flow fan comprising a printed circuit board which mounts the circuitry for operating the motor which is a bipolar winding motor. A voltage regulator IC and a driving IC for a bipolar winding motor are mounted on the printed circuit board. The fan housing is employed as a heat sink for the voltage regulator. Large circuit elements are eliminated. The axial flow fan further comprises a plurality of blades for cooling electronic components wherein the blades comprise of a plurality of specially designed airfoil sections, each section having along substantially the entire length thereof, a cross-sectional shape characterized by a maximum thickness located substantially constantly between about 19% chord to about 20% chord and a maximum camber located substantially constantly between about 45% chord to about 46% chord. The circuitry, housing, and blades are designed so that the axial width of the axial fan is decreased while maintaining performance parameters and design constraints.
REFERENCES:
patent: 2609055 (1952-09-01), Monroe
patent: 2811303 (1957-10-01), Ault et al.
patent: 2974728 (1961-03-01), Culp
patent: 3168235 (1965-02-01), Valdi
patent: 3169694 (1965-02-01), Borchers
patent: 4046489 (1977-09-01), Fairchild et al.
patent: 4130770 (1978-12-01), Wrobel
patent: 4360751 (1982-11-01), Arnold, Jr. et al.
patent: 4413796 (1983-11-01), Bousquet
patent: 4431376 (1984-02-01), Lubenstein et al.
patent: 4474534 (1984-10-01), Thode
patent: 4569631 (1986-02-01), Gray, III
patent: 4579510 (1986-04-01), Christensen-Dalsgaard
patent: 4656553 (1987-04-01), Brown
patent: 4830574 (1989-05-01), Wainauski et al.
patent: 4840541 (1989-06-01), Sakane et al.
patent: 4844697 (1989-07-01), Johansen
patent: 4911612 (1990-03-01), Rodde et al.
patent: 4941803 (1990-07-01), Wainauski et al.
patent: 4971520 (1990-11-01), Van Houten
patent: 5127801 (1992-07-01), Mortensen
patent: 5181830 (1993-01-01), Chou
patent: 5244347 (1993-09-01), Gallivan et al.
patent: 5273400 (1993-12-01), Amr
patent: 5320493 (1994-06-01), Shih et al.
patent: 5326225 (1994-07-01), Gallivan et al.
patent: 5433586 (1995-07-01), Cole
patent: 5513951 (1996-05-01), Komoda et al.
patent: 5610458 (1997-03-01), Baker et al.
patent: 5616004 (1997-04-01), Alizadeh
patent: 5659217 (1997-08-01), Petersen
patent: 5701045 (1997-12-01), Yokozawa et al.
patent: 5730583 (1998-03-01), Alizadeh
patent: 5755557 (1998-05-01), Alizadeh
patent: 5929611 (1999-07-01), Scott et al.
patent: 5930112 (1999-07-01), Babinski et al.
patent: 5952798 (1999-09-01), Jones et al.
Casey, A Computational Geometry for the Blades and Internal Flow Channels of Centrifugal Compressors, ASME 82-GT-155 (undated).
Forrest, Interactive interpolation and approximation by Bezier polynomials, The Computer Journal, vol. 15, No. 1, p. 71-79 (undated--recieved by Journal May 1971).
Abbott and Von Doenhoff, Theory of Wing Sections, 1949, p. 111-13.
Selby, Standard Mathematical Tables, 1974, p. 627.
Martensen, The Calculation of the Pressure Distribution on a Cascade of Thick Airfoils by Means of Fredholm Integral Equations of the Second Kind, NASA TT F-702, Jul. 1971.
Bradbury Phillip James
Jenkins, Jr. Chalmers R.
Nguyen Phep Xuan
Evora Robert Z.
Freay Charles G.
NMB (USA) Inc.
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