US1818607A - Fan - Google Patents
Fan Download PDFInfo
- Publication number
- US1818607A US1818607A US30221528A US1818607A US 1818607 A US1818607 A US 1818607A US 30221528 A US30221528 A US 30221528A US 1818607 A US1818607 A US 1818607A
- Authority
- US
- United States
- Prior art keywords
- fan
- plane
- blade
- angle
- bent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
Definitions
- This invention relates to a fan and more particularly to the formation of the fan blades. 7
- Fig. 1 is a plan view of the fan.
- Fig. 2 is a sectional view through one of the blades taken on line 2-2 of Fig. 1.
- a fan which, in the form illustrated, comprises two sheet metal stampings 12 and 14 riveted together as at 16 forming four blades U 18. Each blade is bent at an angle to the plane of a central fiat portion 20 which forms the hub of the fan. Openings 22 have been provided to receive screws for atdriving the fan in a direction indicated by the arrow at the top of Fig. 1.
- FIG. 2 the angle of the blades 18, with respect to the flat hub portion 20, is illustrated by the blade shown in section and a slight camber is shown in the blade 21.
- common practice has been to provide fans either with flat blades or blades with a slight camber, the edges of which remain in the plane or contour of the blade.
- the forward or leading edge 24 of the blade is bent slightly upward out of the plane of the blade so that the edge 24 does not strike the air in a straight line but at an angle.
- the edge 24 is bent at an angle to the plane in which the fan rotates, hereinafter called the plane of the fan, greater than the angle of the blade with respect to'the plane of the fan.
- the rear or following edge 25 of each blade is bent slightly upward from the plane of the blade into the same plane as the plane of the fan. The result being that all whistling noises of the fan are eliminated.
- bent edges 24 and 25 not only eliminate the objectionable noise of the fan but stiffen it thereby decreasing vibration.
- a fan having a plurality of blades each bent at an angle to the plane of the fan, the leading edge of each blade being bent at an angle to the plane of the fan greater than the angle between the plane of the blade and the plane of the fan, and the following edge. of each blade being bent at an angle to lie in the plane of the fan.
- a fan having a plurality of blades each bent at an angle to the plane of the fan, one longitudinal edge of each blade being bent at an angle to the plane of the fan in the same direction of the blades and greater than the angle between the plane of the blade and the plane of the fan, and the other longitudinal edge of each blade being bent at an angle to'lie in the plane of the fan.
- a fan having a plurality of blades each bent at an angle to the plane of the fan, each blade provided with a camber, the leading edge of each blade being bent at an angle to the plane of the fan greater than the angle between the plane of the blade and. the plane of the fan, and the following 100 edge of each blade being bent at an angle to lie in the plane of the fan.
- a fan having a plurality of blades each bent at an angle to the plane of the fan, one longitudinal edge of each bladedbeing bent at an angle to the plane of the fan in the same direction as the blades and greater than the angle between the plane of the blade and the plane of the fan, and the other longitudinal edge of each blade being bent in the opposite direction of the blades and less than the angle between the plane of the blade and the plane of the fan.
- a fan having a plurality of blades, the major portion of each of which is bent at an angle to the plane of the fan, the longitudinal side edges of each blade being bent adjacent the outer portions thereof in the same direction out of the plane of the blade.
- a fan having a plurality of blades bent at an angle to the plane of the fan and each provided with a camber, the longitudi- 1121 edges of each blade being bent in the same direction out of the plane of the blade.
Description
.'Au .11,1931. E. E. CAMPBELL; 1,818,607
FAN
Fiied Aug.- 27. 1928 INVENTOR ELBA ,E. CAMPBELL.
Patented Aug. 11, 1931 "UNITED STATES ELBA E. CAMPBELL, or DETROIT,
MICHIGAN, ASSIGNORJIO CHRYSLER CORPORATION,
OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE FAN Application filed. August 27, 1928. 'SerialNo. 302,215.
This invention relates to a fan and more particularly to the formation of the fan blades. 7
In the manufacture of fans particularly fans of the type commonly used for cooling the engine of an automobile it is desirable to obtain a light inexpensive fan preferably formed from a stamping or stampings secured together. Heretofore when stamped 1 sheet metal fan blades have been used the leading edge of the blade causes a noise as it strikes the air and when the blades are provided with a slight camber the rear edge of the blade also causes a noise. 15 It is an important ob'ect of this invention to bend the edges the fan blades at an angle to the plane of the blades so that the edges do not strike the air to cause a noise.
Other objects and advantages of the in vention will more fully appear from the following description taken in connection with the accompanying drawings, in which:
Fig. 1 is a plan view of the fan.
Fig. 2 is a sectional view through one of the blades taken on line 2-2 of Fig. 1.
Referring to the drawings, I have shown a fan which, in the form illustrated, comprises two sheet metal stampings 12 and 14 riveted together as at 16 forming four blades U 18. Each blade is bent at an angle to the plane of a central fiat portion 20 which forms the hub of the fan. Openings 22 have been provided to receive screws for atdriving the fan in a direction indicated by the arrow at the top of Fig. 1.
Referring to Fig. 2, the angle of the blades 18, with respect to the flat hub portion 20, is illustrated by the blade shown in section and a slight camber is shown in the blade 21. The dotted lines 23, at the edges of the blade shown in section, illustrate the shape of the blade before it is bent. Heretofore common practice has been to provide fans either with flat blades or blades with a slight camber, the edges of which remain in the plane or contour of the blade.
By bending the edges of the blade out of :30 its plane new results have been obtained.
..- taching the fan to a rotatable member for' The forward or leading edge 24 of the blade is bent slightly upward out of the plane of the blade so that the edge 24 does not strike the air in a straight line but at an angle. In other words, the edge 24 is bent at an angle to the plane in which the fan rotates, hereinafter called the plane of the fan, greater than the angle of the blade with respect to'the plane of the fan. The rear or following edge 25 of each blade is bent slightly upward from the plane of the blade into the same plane as the plane of the fan. The result being that all whistling noises of the fan are eliminated.
The bent edges 24 and 25 not only eliminate the objectionable noise of the fan but stiffen it thereby decreasing vibration.
Having thus illustrated and described one embodiment of my invention it is to be understood that various changes including the size and degree of the angle of the bent edges may be made without departing from the spirit of my invention and it is not my intention to limit its scope other than by the terms of the appended claims.
What I claim is:
1. A fan having a plurality of blades each bent at an angle to the plane of the fan, the leading edge of each blade being bent at an angle to the plane of the fan greater than the angle between the plane of the blade and the plane of the fan, and the following edge. of each blade being bent at an angle to lie in the plane of the fan.
2. A fan having a plurality of blades each bent at an angle to the plane of the fan, one longitudinal edge of each blade being bent at an angle to the plane of the fan in the same direction of the blades and greater than the angle between the plane of the blade and the plane of the fan, and the other longitudinal edge of each blade being bent at an angle to'lie in the plane of the fan.
3. A fan having a plurality of blades each bent at an angle to the plane of the fan, each blade provided with a camber, the leading edge of each blade being bent at an angle to the plane of the fan greater than the angle between the plane of the blade and. the plane of the fan, and the following 100 edge of each blade being bent at an angle to lie in the plane of the fan.
4. A fan having a plurality of blades each bent at an angle to the plane of the fan, one longitudinal edge of each bladedbeing bent at an angle to the plane of the fan in the same direction as the blades and greater than the angle between the plane of the blade and the plane of the fan, and the other longitudinal edge of each blade being bent in the opposite direction of the blades and less than the angle between the plane of the blade and the plane of the fan.
5. A fan having a plurality of blades, the major portion of each of which is bent at an angle to the plane of the fan, the longitudinal side edges of each blade being bent adjacent the outer portions thereof in the same direction out of the plane of the blade.
6. A fan having a plurality of blades bent at an angle to the plane of the fan and each provided with a camber, the longitudi- 1121 edges of each blade being bent in the same direction out of the plane of the blade.
ELBA E. CAMPBELL.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30221528 US1818607A (en) | 1928-08-27 | 1928-08-27 | Fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30221528 US1818607A (en) | 1928-08-27 | 1928-08-27 | Fan |
Publications (1)
Publication Number | Publication Date |
---|---|
US1818607A true US1818607A (en) | 1931-08-11 |
Family
ID=23166790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US30221528 Expired - Lifetime US1818607A (en) | 1928-08-27 | 1928-08-27 | Fan |
Country Status (1)
Country | Link |
---|---|
US (1) | US1818607A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2681708A (en) * | 1950-09-01 | 1954-06-22 | Gail E Mix | Fan construction |
US3659959A (en) * | 1970-07-15 | 1972-05-02 | Fasco Industries | Air fan impeller blade assembly |
US4028007A (en) * | 1975-08-18 | 1977-06-07 | Torin Corporation | Propeller fan |
FR2384974A1 (en) * | 1977-03-22 | 1978-10-20 | Torin Corp | Propeller fan with spider blades - has central twist in blade with spot welded supports |
US5575624A (en) * | 1996-02-14 | 1996-11-19 | Bogage; Gerald I. | Metal contoured blade for a reversible ceiling fan |
US5645403A (en) * | 1996-02-14 | 1997-07-08 | Bogage; Gerald I. | Metal contoured blade with rolled edges at impact surfaces |
US6010307A (en) * | 1995-07-31 | 2000-01-04 | Mccabe; Francis J. | Propeller, structures and methods |
US6039533A (en) * | 1995-07-31 | 2000-03-21 | Mccabe; Francis J. | Fan blade, structures and methods |
US6190122B1 (en) * | 1997-12-13 | 2001-02-20 | Mccabe Francis J. | Intake and exhaust air damper with movable motor fan assembly |
US6370695B2 (en) | 1998-01-16 | 2002-04-16 | Depuy Orthopaedics, Inc. | Head gear apparatus |
US20040068208A1 (en) * | 1998-09-25 | 2004-04-08 | Cimino William Wayne | Surgical system console |
US6990691B2 (en) | 2003-07-18 | 2006-01-31 | Depuy Products, Inc. | Head gear apparatus |
US20070160478A1 (en) * | 2005-12-29 | 2007-07-12 | Minebea Co., Ltd. | Fan blade with non-varying stagger and camber angels |
US20120177502A1 (en) * | 2011-01-07 | 2012-07-12 | Fritz Unger | Rotor for a wind power generator |
US20160102674A1 (en) * | 2014-10-10 | 2016-04-14 | Trane International Inc. | Fan Blade |
JP2017044129A (en) * | 2015-08-26 | 2017-03-02 | 三菱電機株式会社 | Axial flow blower |
-
1928
- 1928-08-27 US US30221528 patent/US1818607A/en not_active Expired - Lifetime
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2681708A (en) * | 1950-09-01 | 1954-06-22 | Gail E Mix | Fan construction |
US3659959A (en) * | 1970-07-15 | 1972-05-02 | Fasco Industries | Air fan impeller blade assembly |
US4028007A (en) * | 1975-08-18 | 1977-06-07 | Torin Corporation | Propeller fan |
FR2384974A1 (en) * | 1977-03-22 | 1978-10-20 | Torin Corp | Propeller fan with spider blades - has central twist in blade with spot welded supports |
US6010307A (en) * | 1995-07-31 | 2000-01-04 | Mccabe; Francis J. | Propeller, structures and methods |
US6039533A (en) * | 1995-07-31 | 2000-03-21 | Mccabe; Francis J. | Fan blade, structures and methods |
US5575624A (en) * | 1996-02-14 | 1996-11-19 | Bogage; Gerald I. | Metal contoured blade for a reversible ceiling fan |
US5645403A (en) * | 1996-02-14 | 1997-07-08 | Bogage; Gerald I. | Metal contoured blade with rolled edges at impact surfaces |
WO1997030290A1 (en) * | 1996-02-14 | 1997-08-21 | Bogage Gerald I | Metal contoured blade for a reversible ceiling fan |
US6190122B1 (en) * | 1997-12-13 | 2001-02-20 | Mccabe Francis J. | Intake and exhaust air damper with movable motor fan assembly |
US6513168B2 (en) | 1998-01-16 | 2003-02-04 | Depuy Orthopaedics, Inc. | Head gear apparatus |
US6393617B1 (en) | 1998-01-16 | 2002-05-28 | Depuy Orthopaedics, Inc. | Head gear apparatus |
US6370695B2 (en) | 1998-01-16 | 2002-04-16 | Depuy Orthopaedics, Inc. | Head gear apparatus |
US6711748B2 (en) | 1998-01-16 | 2004-03-30 | Depuy Orthopaedics, Inc. | Head gear apparatus having movably mounted fan |
US20040068208A1 (en) * | 1998-09-25 | 2004-04-08 | Cimino William Wayne | Surgical system console |
US7200873B2 (en) | 2003-07-18 | 2007-04-10 | Depuy Products, Inc. | Head gear apparatus having improved air flow arrangement |
US20060101557A1 (en) * | 2003-07-18 | 2006-05-18 | Depuy Products, Inc. | Head gear apparatus having improved air flow arrangement |
US6990691B2 (en) | 2003-07-18 | 2006-01-31 | Depuy Products, Inc. | Head gear apparatus |
US20070151002A1 (en) * | 2003-07-18 | 2007-07-05 | Depuy Products, Inc. | Head gear apparatus having improved air flow arrangement |
US7937779B2 (en) | 2003-07-18 | 2011-05-10 | Depuy Products | Head gear apparatus having improved air flow arrangement |
US20070160478A1 (en) * | 2005-12-29 | 2007-07-12 | Minebea Co., Ltd. | Fan blade with non-varying stagger and camber angels |
US20120177502A1 (en) * | 2011-01-07 | 2012-07-12 | Fritz Unger | Rotor for a wind power generator |
US8882470B2 (en) * | 2011-01-07 | 2014-11-11 | Fritz Unger | Rotor for a wind power generator |
US20160102674A1 (en) * | 2014-10-10 | 2016-04-14 | Trane International Inc. | Fan Blade |
JP2017044129A (en) * | 2015-08-26 | 2017-03-02 | 三菱電機株式会社 | Axial flow blower |
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