US3580694A - Combined fluid impellers and self-sealing closures - Google Patents

Combined fluid impellers and self-sealing closures Download PDF

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Publication number
US3580694A
US3580694A US813912A US3580694DA US3580694A US 3580694 A US3580694 A US 3580694A US 813912 A US813912 A US 813912A US 3580694D A US3580694D A US 3580694DA US 3580694 A US3580694 A US 3580694A
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US
United States
Prior art keywords
blades
impeller
rotor ring
lever
rotor
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
Application number
US813912A
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English (en)
Inventor
Ole Stig Andersen
Ove Rathje
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andersen Ing Mask F S
Fs Andersen Ingenior-Og Maskinforretning I/s
Original Assignee
Andersen Ing Mask F S
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andersen Ing Mask F S filed Critical Andersen Ing Mask F S
Application granted granted Critical
Publication of US3580694A publication Critical patent/US3580694A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/142—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using pivoting blades with intersecting axles
    • 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
    • F04D29/34—Blade mountings
    • F04D29/36—Blade mountings adjustable
    • F04D29/362—Blade mountings adjustable during rotation
    • F04D29/364—The blades having only a predetermined number of possible positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20172—Fan mounting or fan specifications

Definitions

  • a combined fluid impeller and self-sealing closure has a plurality of blades mounted on the periphery of a rotor ring for pivotal movement about a radial axis.
  • the blades are arranged so that they are in overlapping, sealing relationship with respect to one anotherwhen the impeller is at rest, and are in an open, impelling position when the impeller is rotating.
  • the blades are opened by means of weights arranged in the rotor ring which are moved by centrifugal force when the impeller is rotating and rotates a control member arranged inside the rotor ring which in turn rotates the blades to their open position.
  • This invention relates to a combined fluid impeller and selfsealing closure or louverimpeller, and of the type in which a plurality of blades are pivotally supported along the circumference of a rotor and adapted, when the rotor is at a standstill, by means of return spring means to be held in a closure position, in which their side edges are overlapping each other or arranged so close to each other that passage of air through the impeller is barred, and in which each blade is provided at its root with a pivot pin, pivotally connected to a rotor ring constituting a part of the rotor and attached to a supporting disc adapted to be firmly connected to the impeller shaft, and in which each blade is further connected to a control member adapted to adjust the angular position of the blades and connected to at least one rotating mass arranged in the rotor and adapted, when the
  • louver-impellers will only be effective when the rotor is rotating in one direction, whereas in many cases, for example in connection with impellers for cow-houses, stables, etc. it may be desirable that the impeller, through reversal of the direction of rotation, can be made blow in both directions.
  • a louver-impeller has been proposed of the type first above mentioned, which impeller affords the possibility of reversing the direction of flow through reversal of the direction of rotation of the impeller shaft.
  • the rotating mass is constituted by weighted arms extending in the longitudinal direction of the rotor shaft .and pivoting radially outwards during the rotation of the shaft counteracted by the return spring means, and thereby into the airflow developed by the impeller.
  • a louver-impeller of this type has a considerable axial dimension, and further the weightened arms involve a not unessential reduction of the efficiency of the impeller.
  • the object of the present invention is to provide a louverimpeller of the type above first mentioned, which may be given a small axial dimension, and which ensures that the device for operating the blades will be without any influence on the efficiency of the impeller.
  • connection between the control member operated by the rotating mass and the blades may be provided in many different ways.
  • each blade pivot pin is provided with a lateral arm engaging a control member, axially slidably and limited rotatably arranged around the rotor shaft, and which by means of connecting devices is axially displaced by the rotating mass.
  • Such a cam device requires, however, a relatively great axial length, and involves relatively high frictional resistance that may reduce the sensitiveness of the device.
  • the impeller is of the type known per se, in which the pivot pin of each blade is provided, inside the rotor ring, with a lateral arm engaging the control member, which is arranged within the rotor, rotatably concentric to the axis of rotation of the rotor, in which case it has been found most appropriate that the rotating mass is provided with a lever, through which it is pivotally connected to the supporting disc, and which lever is provided with a lateral pin engaging an approximately radially extending slot or groove in the control member, whereby it is obtained that the controlling device requires only a quite small axial dimension and that minimum friction results.
  • the return spring means comprises for each rotating mass a return spring inserted between the return spring, preferably the lever thereof, and the supporting disc, so that the return spring, instead of being directly connected to the control member, as has always been the casepreviously, is only indirectly acting thereon and whereby the most compact assembly of the members located within the hub may be obtained, at the same time as the frictional resistance that is of importance during the opening and closing movements of the blades is minimized, due to their not being affected at all by the return spring means.
  • FIG. 1 is a fragmentary front view of a louver-propeller embodying the invention.
  • FIG. 2 is a cross-sectional view taken on the line "-11 in FIG. 1.
  • an impeller hub 52 is fastened to an impeller shaft 50.
  • the hub 52 is provided with a radially extending supporting disc 54 provided at its periphery with a rotor ring 56 concentric to the shaft 50.
  • the impeller comprises eight blades 58, each provided at its root with a pivot pin 60 extending along the center axis of the blade and pivotably mounted in the 'rotor ring 56 and in a hub 62 provided at the inner side of this ring 56.
  • the blades 58 are of such shapes that, when turned into a position, in which they extend approximately in a plane radial to the shaft 50, their side edges are overlapping to provide a tight closure.
  • Each pivot pin 60 is provided inside the hub 62 with a socket 64, provided with a forward extending lateral arm 66.
  • a control disc 68 in the drawing partly broken away, is rotatably arranged on the hub 52 and is for each arm 66 provided with an opening 67, through which the arm 66 extends. Owing thereto, the control disc 68 will, when turned counterclockwise, operate the arms 66 and thereby turn the blades 58 out of the joint plane, so that they can function as impeller blades. Subsequent reverse operation of the control disc 68 will make the blades revert to the closure position shown.
  • each angle-shaped lever 72 On the supporting disc 54 there is at each of two diametrally opposite points pivotably around a pivot pin 70 arranged an angle-shaped lever 72, carrying a weight 74 and thus constituting a rotating mass. Only one of these two rotating masses appears on the drawing.
  • Each angle-shaped lever 72 is provided with a lateral pin 76 axially extending through or into an oblong aperture 78 in the control disc 68, for example a slot or a groove.
  • Each angle-shaped lever 72 is provided, moreover, at the free end with a projection 80, and a compressionspring 82, functioning as a return spring, is inserted between the projection 80 and the following hub 62. This spring 82 tends to turn the lever 72 into such a direction that the weight 74 is moved towards the hub 52 and still remains at a certain distance therefrom at any time.
  • the magnitude of the turning of the blades can be limited by the weights 74 contacting the rotor ring 56, but is is also possible, as shown, to provide the rotor ring 56 with adjustable stops 86 for the weights 74, whereby the turning movement of the blades, and, consequently, the output of the impeller can be restricted or adjusted.
  • the return springs 80 When the impeller is stopped, the return springs 80 will turn the levers 72, and thereby the weights 74 and the blades 58 back into the initial position shown, whereby the air passage through the impeller is again barred. Since the weights 74 cannot engage the hub 52, the return springs, 82 will tend to force the edges of the blades 58 into close intercontact.
  • the impeller shown Since the weights 74 will be moved outwards by the centrifugal forces irrespective of the direction of rotation of the shaft 50, the impeller shown will be effective for both directions of rotation, the respective directions of flow being opposite, however.
  • a combined fluid impeller and self-sealing closure comprising, in combination:
  • a plurality of blades each having an inner end and pivotally supported along the circumference of said rotor ring and mounted to be pivoted about a radial axis between a closure position in which said blades act together to bar the passage of fluid through the impeller
  • control disc arranged inside said rotor ring and pivotal concentric to the axis of rotation of said rotor, said control disc defining an opening for each of said blades, and each of said pivot pins being provided with a lateral pin arranged inside said rotor ring and extending through a corresponding one of said openings in said control disc;
  • a rotating mass arranged within said rotor ring, said rotating mass comprising a lever and a fly-weight attached to one end of said lever, said fly-weight and said lever together forming an angle member opening away from the axis of rotation of the impeller shaft;
  • pivot means pivotally connecting said lever near its end opposite said fly-weight to said supporting disc for pivoting movement parallel to said supporting disc, said lever being provided between said pivot means and said flyweight with a lateral control pin, said control disc being further provided with a substantially radially extending slot or groove, and said control pin engaging said slot or groove;
  • return spring means interconnecting said rotating mass and said supporting disc for urging said rotating mass toward its position ad acent the impeller shaft, and for maintaining said control disc in its position corresponding to the closure position of said blades.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US813912A 1968-04-08 1969-04-07 Combined fluid impellers and self-sealing closures Expired - Lifetime US3580694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK155968AA DK116748B (da) 1968-04-08 1968-04-08 Ventilator, de samtidig kan virke som et lukkejalousi.

Publications (1)

Publication Number Publication Date
US3580694A true US3580694A (en) 1971-05-25

Family

ID=8106057

Family Applications (1)

Application Number Title Priority Date Filing Date
US813912A Expired - Lifetime US3580694A (en) 1968-04-08 1969-04-07 Combined fluid impellers and self-sealing closures

Country Status (7)

Country Link
US (1) US3580694A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (1) DK116748B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES366064A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2005768A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1259367A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL164935C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE352411B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213737A (en) * 1978-01-17 1980-07-22 Gerhardt Kyle D Wind engine
US4485888A (en) * 1983-06-10 1984-12-04 General Motors Corporation Vehicle engine cooling apparatus
US4743163A (en) * 1985-11-22 1988-05-10 Sundstrand Corporation Ram air turbine control system
US5599168A (en) * 1995-08-23 1997-02-04 Lund; Arnold M. Wind turbine adaptable to wind direction and velocity
US20040086385A1 (en) * 2002-10-31 2004-05-06 Olesiewicz Timothy W. Fan with automatic failure mode
US20050238489A1 (en) * 2004-04-27 2005-10-27 Lund Arnold M Control vane for a wind turbine
US20060152901A1 (en) * 2005-01-10 2006-07-13 Hewlett-Packard Development Company, L.P. Dynamically adaptable electronics cooling fan
US20140308114A1 (en) * 2013-04-10 2014-10-16 Hon Hai Precision Industry Co., Ltd. Dust-proof fan
US20180135655A1 (en) * 2016-11-16 2018-05-17 Ya-Chi CHEN Adjustable fan damping apparatus for exerciser
CN110612048A (zh) * 2017-05-11 2019-12-24 海蒂诗弗兰克有限及两合公司 枢转配件和家具
WO2020081792A1 (en) * 2018-10-17 2020-04-23 Arris Enterprises Llc Fan with pivotable blades, and corresponding electronics cooling system and methods
US10953978B2 (en) * 2016-11-21 2021-03-23 Ratier-Figeac Sas Propeller counterweight

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3431459A1 (de) * 1984-01-14 1985-07-18 Byung Eun Daegu Yoo Luefter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377328A (en) * 1920-01-12 1921-05-10 Eggerth Henry Eric Windmill-fan
US1829443A (en) * 1927-07-02 1931-10-27 Gobereau Robert Richard Propeller
US2054947A (en) * 1930-06-25 1936-09-22 Riddle Zelie Automatic variable pitch propeller
US2317778A (en) * 1941-05-08 1943-04-27 Theadore M Kuehn Governor attachment for impellers
US2383004A (en) * 1943-06-16 1945-08-21 John Spargo Combined impeller and closure
US2688285A (en) * 1952-03-13 1954-09-07 Stockett Variable stroke control windmill
US3217808A (en) * 1963-10-01 1965-11-16 Dowty Hydraulic Units Ltd Cooling fans

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377328A (en) * 1920-01-12 1921-05-10 Eggerth Henry Eric Windmill-fan
US1829443A (en) * 1927-07-02 1931-10-27 Gobereau Robert Richard Propeller
US2054947A (en) * 1930-06-25 1936-09-22 Riddle Zelie Automatic variable pitch propeller
US2317778A (en) * 1941-05-08 1943-04-27 Theadore M Kuehn Governor attachment for impellers
US2383004A (en) * 1943-06-16 1945-08-21 John Spargo Combined impeller and closure
US2688285A (en) * 1952-03-13 1954-09-07 Stockett Variable stroke control windmill
US3217808A (en) * 1963-10-01 1965-11-16 Dowty Hydraulic Units Ltd Cooling fans

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213737A (en) * 1978-01-17 1980-07-22 Gerhardt Kyle D Wind engine
US4485888A (en) * 1983-06-10 1984-12-04 General Motors Corporation Vehicle engine cooling apparatus
US4743163A (en) * 1985-11-22 1988-05-10 Sundstrand Corporation Ram air turbine control system
US5599168A (en) * 1995-08-23 1997-02-04 Lund; Arnold M. Wind turbine adaptable to wind direction and velocity
US20040086385A1 (en) * 2002-10-31 2004-05-06 Olesiewicz Timothy W. Fan with automatic failure mode
US6767186B2 (en) * 2002-10-31 2004-07-27 Sun Microsystems, Inc. Fan with automatic failure mode
US20050238489A1 (en) * 2004-04-27 2005-10-27 Lund Arnold M Control vane for a wind turbine
US7014416B2 (en) 2004-04-27 2006-03-21 Arnold Morten Lund Control vane for a wind turbine
US20060152901A1 (en) * 2005-01-10 2006-07-13 Hewlett-Packard Development Company, L.P. Dynamically adaptable electronics cooling fan
US7184268B2 (en) * 2005-01-10 2007-02-27 Hewlett-Packard Development Company, L.P. Dynamically adaptable electronics cooling fan
US20140308114A1 (en) * 2013-04-10 2014-10-16 Hon Hai Precision Industry Co., Ltd. Dust-proof fan
US9458861B2 (en) * 2013-04-10 2016-10-04 Ambit Microsystems (Shanghai) Ltd. Dust-proof fan
US20180135655A1 (en) * 2016-11-16 2018-05-17 Ya-Chi CHEN Adjustable fan damping apparatus for exerciser
US10125795B2 (en) * 2016-11-16 2018-11-13 Ya-Chi CHEN Adjustable fan damping apparatus for exerciser
US10953978B2 (en) * 2016-11-21 2021-03-23 Ratier-Figeac Sas Propeller counterweight
CN110612048A (zh) * 2017-05-11 2019-12-24 海蒂诗弗兰克有限及两合公司 枢转配件和家具
WO2020081792A1 (en) * 2018-10-17 2020-04-23 Arris Enterprises Llc Fan with pivotable blades, and corresponding electronics cooling system and methods
US10660235B2 (en) 2018-10-17 2020-05-19 Arris Enterprises Llc Fan with pivotable blades, and corresponding electronics cooling system and methods

Also Published As

Publication number Publication date
NL6905007A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-10-10
FR2005768A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-12-19
NL164935C (nl) 1981-02-16
DK116748B (da) 1970-02-09
DE1916381B2 (de) 1976-12-16
GB1259367A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-01-05
DE1916381A1 (de) 1969-10-30
ES366064A1 (es) 1971-03-16
NL164935B (nl) 1980-09-15
SE352411B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-27

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