US3189260A - Axial blower - Google Patents
Axial blower Download PDFInfo
- Publication number
- US3189260A US3189260A US264742A US26474263A US3189260A US 3189260 A US3189260 A US 3189260A US 264742 A US264742 A US 264742A US 26474263 A US26474263 A US 26474263A US 3189260 A US3189260 A US 3189260A
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- United States
- Prior art keywords
- casing
- disposed
- blower
- ferrule
- discharge portion
- 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.)
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
Definitions
- the fundamental aim of this invention is in designing a blower, which is exempt from the abovesaid drawback.
- the forward (inlet) sides of the blower rotor blades are arranged and operate in a transition piece narrowing in the direction of the air ow.
- the transition part connects the blower case with a cylindrical mouth, forming together with the ferrule installed in front of the rotor an annular slit intended for by-pass of air.
- FIG, 1 schematically illustrates a general View f the proposed blower
- Transition part 1 tapering in the direction of the air flow and forming a part of the blower case is connected with cylindrical mouth 2 in which ferrule 3 is concentrically mounted.
- the latter is arranged in front of blades 4, of the blower rotor 5, and its diameter is equal to the diameter of the cylindrical portion 6 of the blower casing.
- Mouth 2 which diameter is equal, approximately, to twice the diameter of the rotor, forms together with ferrule 3 an annular slit a intended for by-pass of air.
- Guide vanes 7 are installed in ferrule 3.
- Transition part 1 is installed in such a way that just the forward (inlet) portions of blades 4 are arranged in it, while the rear portions of the blades 4 are located in the blower case cylindrical portion 6.
- the proposed axial blower operates in a stable manner within the whole range of the pressure characteristic curve from maximum and down to zero.
- An axial ow blower comprising a circular elongated hollow casing, said casing having a cylindrical air inlet portion terminating in an inwardly tapering transition portion which in turn terminates in a cylindrical discharge portion, a ring ferrule disposed solely in said inlet portion in spaced relation to the casing of said inlet portion to provide an annular air passage between said ferrule and said casing, the outside diameter of sa-id ferrule being substantially equal to the inside diameter of said discharge portion, radially disposed guide varies: fixed within said ferrule, a rotor rotatably mounted in said discharge portion and radially disposed blades onsaid rotor, a portion of each blade being disposed within said transition portion and the remainder of each blade being disposed in said discharge portion.
- An axial flow blower comprising a circular elongated hollow casing, said casing having a cylindrical air inlet portion terminating in an inwardly tapering transition portion which in turn terminates in a cylindrical discharge portion, a ring ferrule disposed solely in said inlet portion in spaced relation to the casing of said inlet portion to provide an annular air passage between said ferrule and said casing, radially disposed guide Vanes xed within said ferrule, a rotor rotatably mounted ⁇ in said discharge portion and radially disposed blades on said rotor, a portion of each blade being disposed within said transition portion and the remainder of each blade being disposed in said discharge portion.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
June 15, 1965v s; K. jlvANovy `AXIAL BLOWER Filed Maron 8, 1963 R m O E m V M m WM w m INI l N K. a. M, .N w vx?, ww KW: ff www w w w. .w
United States Patent O 3,189,260 AXEAL BLOWER Sergei Konstantinovich Ivanov, Donetsk, U.S.S.R., assignor to Donetsky Gosudarstvenny Proektno-Konstruktoi-sky i Eksperirnentalay institute Kompieksnoi Melthanizatsii Shakht-Dongiprougiemash Filed Mar. 8, 1963, Ser. No. 264,742 2 Ciains. (Cl. 230-120) This invent-ion relates to axial blowers and, more precisely, to a design of `such blowers ensuring extension of the stable operation range.
Hitherto, for achievement of stable operation of aXial blowers the application of ferrules was known, those ferrules being installed in the blower case in front of the rotor.
Utilization of such ferrules, however, does not ensure, to the required degree, localization of parasitic ow of air in the peripheral portion of the rotor blades, adversely aifecting stable operation of the blower.
The fundamental aim of this invention is in designing a blower, which is exempt from the abovesaid drawback.
In the proposed design the forward (inlet) sides of the blower rotor blades are arranged and operate in a transition piece narrowing in the direction of the air ow. The transition part connects the blower case with a cylindrical mouth, forming together with the ferrule installed in front of the rotor an annular slit intended for by-pass of air.
Owing to the extension of the stable-operation range attained thanks to the application of the blowers proposed design there will be achieved also an extension of its economical-operation zone and an increase in reliability both when operating on suction and on forcing.
The afore-mentioned and other features of this invention will be evident from the description cited below, the drawings enclosed thereto, and the claims. In these drawings FIG, 1 schematically illustrates a general View f the proposed blower, and FIG. Z--aerodynamic characteristic curves of the blower of this invention and of a common type blower.
The proposed blower is arranged as follows: Transition part 1 (FIG. 1) tapering in the direction of the air flow and forming a part of the blower case is connected with cylindrical mouth 2 in which ferrule 3 is concentrically mounted. The latter is arranged in front of blades 4, of the blower rotor 5, and its diameter is equal to the diameter of the cylindrical portion 6 of the blower casing. Mouth 2, which diameter is equal, approximately, to twice the diameter of the rotor, forms together with ferrule 3 an annular slit a intended for by-pass of air. Guide vanes 7 are installed in ferrule 3. Transition part 1 is installed in such a way that just the forward (inlet) portions of blades 4 are arranged in it, while the rear portions of the blades 4 are located in the blower case cylindrical portion 6.
The following symbols are used in FIG. 2:
Her-static pressure, in kg./m.2;
cr-static pressure, in dimensionless values; Q-delivery, in m.3/min.;
delivery, in dimensionless values; ncr-eciency As may be seen from the characteristic curves presented in FIG. 2, the static pressure in the curve recess in op- ICC eration of an ordinary blower is 50% below the maximum pressure created by the proposed blower. Thus operation of the proposed blower is exempt from any recess on the pressure characteristic curve.
The eiciency o7 of the proposed blower as compared with that of an ordinary one will not be reduced, while the economical-operation zone will be enlarged.
Moreover, the proposed axial blower operates in a stable manner within the whole range of the pressure characteristic curve from maximum and down to zero.
In the above description the design is presented as an example of one of the most demonstrative forms of the proposed blower design; however, it must be quite obvious for any person competent in the given iield that there may be different alterations and variations introduced without, however, departing from the very essence and the scope of the invention, as well as from the scope of the following claims.
What I claim is:
1. An axial ow blower comprising a circular elongated hollow casing, said casing having a cylindrical air inlet portion terminating in an inwardly tapering transition portion which in turn terminates in a cylindrical discharge portion, a ring ferrule disposed solely in said inlet portion in spaced relation to the casing of said inlet portion to provide an annular air passage between said ferrule and said casing, the outside diameter of sa-id ferrule being substantially equal to the inside diameter of said discharge portion, radially disposed guide varies: fixed within said ferrule, a rotor rotatably mounted in said discharge portion and radially disposed blades onsaid rotor, a portion of each blade being disposed within said transition portion and the remainder of each blade being disposed in said discharge portion.
2. An axial flow blower comprising a circular elongated hollow casing, said casing having a cylindrical air inlet portion terminating in an inwardly tapering transition portion which in turn terminates in a cylindrical discharge portion, a ring ferrule disposed solely in said inlet portion in spaced relation to the casing of said inlet portion to provide an annular air passage between said ferrule and said casing, radially disposed guide Vanes xed within said ferrule, a rotor rotatably mounted` in said discharge portion and radially disposed blades on said rotor, a portion of each blade being disposed within said transition portion and the remainder of each blade being disposed in said discharge portion.
References Cited by the Examiner UNITED STATES PATENTS 2,219,937 10/40 Pollomarel 230-120 2,339,602 1/44 Hagen 230-122 2,391,512 12/45 POnOmareE 230--120 2,540,968 2/51 Thomas 230-120 2,628,768 2/53 Kantrowitz 230--120 2,720,356 10/55 Erwin 230-133 2,847,941 8/58 Jackson 103-89 FOREIGN PATENTS 377,132 6/23 Germany. 564,336 9/ 44 Great Britain.
KARL I. ALBRECHT, Primary Examiner.
I OSEPH H. BRANSON, JR., Examiner.
Claims (1)
1. AN AXIAL FLOW BLOWER COMPRISING A CIRCULAR ELONGATED HOLLOW CASING, SAID CASING HAVING A CYLINDRICAL AIR INLET PORTION TERMINING IN AN INWARDLY PAPERING TRANSITION PORTION WHICH IN TURN TERMINATES IN A CYLINDRICAL DISCHARGE PORTION, A RING FERRULE DISPOSED SOLELY IN SAID INLET PORTION IN SPACED RELATION TO THE CASING OF SAID INLET PORTION TO PROVIDE AN ANNULAR AIR PASSAGE BETWEEN SAID FURRULE AND SAID CASING, THE OUTSIDE DIAMETER OF SAID FURRULE BEING SUBSTANTIALLY EQUAL TO THE INSIDE DIAMETER OF SAID DISCHARGE PORTION, RADIALLY DISPOSED GUIDE VANES FIXED WITHIN SAID FERRULE, A STATOR ROTATABLY MOUNTED IN SAID DISCHARGE PORTION AND RADIALLY DISPOSED BLADES ON SAID ROTOR, A PORTION OF EACH BLADE BEING DISPOSED WITHIN SAID TRANSITION PORTION AND THE REMAINDER OF EACH BLADE BEING DISPOSED IN SAID DISCHARGE PORTION.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US264742A US3189260A (en) | 1963-03-08 | 1963-03-08 | Axial blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US264742A US3189260A (en) | 1963-03-08 | 1963-03-08 | Axial blower |
Publications (1)
Publication Number | Publication Date |
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US3189260A true US3189260A (en) | 1965-06-15 |
Family
ID=23007413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US264742A Expired - Lifetime US3189260A (en) | 1963-03-08 | 1963-03-08 | Axial blower |
Country Status (1)
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US (1) | US3189260A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347045A (en) * | 1965-04-27 | 1967-10-17 | Cape Marine Propulsion Ltd | Marine jet propulsion units |
DE3322295A1 (en) * | 1982-07-29 | 1984-02-02 | Doneckij Gosudarstvennyj proektno-konstruktorskij i eksperimental'nyj institut kompleksnoj mechanizacii šacht, Doneck | AXIAL FAN |
US4602410A (en) * | 1983-03-18 | 1986-07-29 | Flakt Ab | Guide vane ring for a return flow passage in axial fans and a method of producing it |
FR2578589A1 (en) * | 1985-03-05 | 1986-09-12 | Ilka Luft & Kaeltetechnik | Axial fan with inlet nozzle and stabilizer device |
DE3152556C2 (en) * | 1980-12-03 | 1986-10-16 | James Howden Australia Pty. Ltd., North Sidney, New South Wales | Axial blower |
US5282718A (en) * | 1991-01-30 | 1994-02-01 | United Technologies Corporation | Case treatment for compressor blades |
US5297931A (en) * | 1991-08-30 | 1994-03-29 | Airflow Research And Manufacturing Corporation | Forward skew fan with rake and chordwise camber corrections |
US5489186A (en) * | 1991-08-30 | 1996-02-06 | Airflow Research And Manufacturing Corp. | Housing with recirculation control for use with banded axial-flow fans |
WO2001034983A1 (en) | 1999-11-10 | 2001-05-17 | Alliedsignal Inc. | Axial fan |
EP1643134A2 (en) * | 2004-09-30 | 2006-04-05 | General Electric Company | Cooling fan |
US20080206040A1 (en) * | 2002-02-28 | 2008-08-28 | Peter Seitz | Anti-Stall Casing Treatment For Turbo Compressors |
CN103758783A (en) * | 2014-02-17 | 2014-04-30 | 南通大通宝富风机有限公司 | Control rod drive mechanism cooling fan blade capable of reducing root bending stress |
US10465539B2 (en) * | 2017-08-04 | 2019-11-05 | Pratt & Whitney Canada Corp. | Rotor casing |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE377132C (en) * | 1922-11-28 | 1923-06-09 | Froelich & Kluepfel Maschf | Electrically operated duct fan with a motor built into the duct |
US2219937A (en) * | 1939-04-15 | 1940-10-29 | Westinghouse Electric & Mfg Co | Propeller blower apparatus |
US2339602A (en) * | 1942-01-26 | 1944-01-18 | B F Sturtevant Co | Multistage propeller fan |
GB564336A (en) * | 1942-06-29 | 1944-09-22 | Escher Wyss Maschf Ag | Multistage axial flow compressor |
US2391512A (en) * | 1943-10-21 | 1945-12-25 | Westinghouse Electric Corp | Blower apparatus |
US2540968A (en) * | 1948-12-23 | 1951-02-06 | Hamilton Thomas Corp | Bearing structure for pump shafts |
US2628768A (en) * | 1946-03-27 | 1953-02-17 | Kantrowitz Arthur | Axial-flow compressor |
US2720356A (en) * | 1952-06-12 | 1955-10-11 | John R Erwin | Continuous boundary layer control in compressors |
US2847941A (en) * | 1953-11-02 | 1958-08-19 | William M Jackson | Axial flow pumps |
-
1963
- 1963-03-08 US US264742A patent/US3189260A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE377132C (en) * | 1922-11-28 | 1923-06-09 | Froelich & Kluepfel Maschf | Electrically operated duct fan with a motor built into the duct |
US2219937A (en) * | 1939-04-15 | 1940-10-29 | Westinghouse Electric & Mfg Co | Propeller blower apparatus |
US2339602A (en) * | 1942-01-26 | 1944-01-18 | B F Sturtevant Co | Multistage propeller fan |
GB564336A (en) * | 1942-06-29 | 1944-09-22 | Escher Wyss Maschf Ag | Multistage axial flow compressor |
US2391512A (en) * | 1943-10-21 | 1945-12-25 | Westinghouse Electric Corp | Blower apparatus |
US2628768A (en) * | 1946-03-27 | 1953-02-17 | Kantrowitz Arthur | Axial-flow compressor |
US2540968A (en) * | 1948-12-23 | 1951-02-06 | Hamilton Thomas Corp | Bearing structure for pump shafts |
US2720356A (en) * | 1952-06-12 | 1955-10-11 | John R Erwin | Continuous boundary layer control in compressors |
US2847941A (en) * | 1953-11-02 | 1958-08-19 | William M Jackson | Axial flow pumps |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3347045A (en) * | 1965-04-27 | 1967-10-17 | Cape Marine Propulsion Ltd | Marine jet propulsion units |
DE3152556C2 (en) * | 1980-12-03 | 1986-10-16 | James Howden Australia Pty. Ltd., North Sidney, New South Wales | Axial blower |
US4871294A (en) * | 1982-06-29 | 1989-10-03 | Ivanov Sergei K | Axial-flow fan |
DE3322295A1 (en) * | 1982-07-29 | 1984-02-02 | Doneckij Gosudarstvennyj proektno-konstruktorskij i eksperimental'nyj institut kompleksnoj mechanizacii šacht, Doneck | AXIAL FAN |
FR2531149A1 (en) * | 1982-07-29 | 1984-02-03 | Do G Pk I Experiment | AXIAL FAN |
US4602410A (en) * | 1983-03-18 | 1986-07-29 | Flakt Ab | Guide vane ring for a return flow passage in axial fans and a method of producing it |
FR2578589A1 (en) * | 1985-03-05 | 1986-09-12 | Ilka Luft & Kaeltetechnik | Axial fan with inlet nozzle and stabilizer device |
US5282718A (en) * | 1991-01-30 | 1994-02-01 | United Technologies Corporation | Case treatment for compressor blades |
US5297931A (en) * | 1991-08-30 | 1994-03-29 | Airflow Research And Manufacturing Corporation | Forward skew fan with rake and chordwise camber corrections |
US5489186A (en) * | 1991-08-30 | 1996-02-06 | Airflow Research And Manufacturing Corp. | Housing with recirculation control for use with banded axial-flow fans |
WO2001034983A1 (en) | 1999-11-10 | 2001-05-17 | Alliedsignal Inc. | Axial fan |
US6302640B1 (en) | 1999-11-10 | 2001-10-16 | Alliedsignal Inc. | Axial fan skip-stall |
US20080206040A1 (en) * | 2002-02-28 | 2008-08-28 | Peter Seitz | Anti-Stall Casing Treatment For Turbo Compressors |
US7575412B2 (en) | 2002-02-28 | 2009-08-18 | Mtu Aero Engines Gmbh | Anti-stall casing treatment for turbo compressors |
EP1643134A2 (en) * | 2004-09-30 | 2006-04-05 | General Electric Company | Cooling fan |
JP2006105139A (en) * | 2004-09-30 | 2006-04-20 | General Electric Co <Ge> | High performance cooling fan |
EP1643134A3 (en) * | 2004-09-30 | 2012-08-08 | General Electric Company | Cooling fan |
CN103758783A (en) * | 2014-02-17 | 2014-04-30 | 南通大通宝富风机有限公司 | Control rod drive mechanism cooling fan blade capable of reducing root bending stress |
US10465539B2 (en) * | 2017-08-04 | 2019-11-05 | Pratt & Whitney Canada Corp. | Rotor casing |
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