EP0606108B1 - Axialgebläse mit umkehrbaren Strömungsrichtung - Google Patents

Axialgebläse mit umkehrbaren Strömungsrichtung Download PDF

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Publication number
EP0606108B1
EP0606108B1 EP94102599A EP94102599A EP0606108B1 EP 0606108 B1 EP0606108 B1 EP 0606108B1 EP 94102599 A EP94102599 A EP 94102599A EP 94102599 A EP94102599 A EP 94102599A EP 0606108 B1 EP0606108 B1 EP 0606108B1
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EP
European Patent Office
Prior art keywords
casing
wind
impeller
flow blower
drive motor
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
EP94102599A
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English (en)
French (fr)
Other versions
EP0606108A1 (de
Inventor
Michihiro Nishi
Yoshiyuki C/O Fuji Electric Co. Ltd. Niikura
Tadashi C/O Fuji Electric Co. Ltd. Tsukamoto
Ryoji C/O Fuji Electric Co. Ltd. Suzuki
Yokihiro C/O Fuji Electric Co. Ltd. Noguchi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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
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Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority claimed from EP19910111960 external-priority patent/EP0467336B1/de
Publication of EP0606108A1 publication Critical patent/EP0606108A1/de
Application granted granted Critical
Publication of EP0606108B1 publication Critical patent/EP0606108B1/de
Anticipated expiration legal-status Critical
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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
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F04D19/005—Axial flow fans reversible fans
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/003—Ventilation of traffic tunnels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation

Definitions

  • the present invention relates to a bi-directional axial-flow blower which can be mounted, for example, near the ceiling of a road tunnel to ventilate the tunnel.
  • blowers are often used in places which underlie certain restrictions of space, for instance road tunnels or parking decks. In these places, it is often necessary to reverse the air flow direction of the blower depending on environmental conditions such as the direction of natural wind flowing through the tunnel or the occurrence of fire in the tunnel.
  • blowers In conventional air blowers, the direction of air flow is reversed by simply reversing the drive motor of the rotor or by reversing the rotor in its casing.
  • blowers There exists two types of blowers which are generally referred to as jet fan and which are commonly used.
  • an impeller having a rotor cascade is connected to a reversible drive motor and housed in a casing. As the orientation of the rotors is fixed, the drive motor can be operated in either direction to produce air flow in the respective axial direction.
  • a reversible drive motor is connected to an impeller having in the boss thereof an airfoil rotor with camber such as circular-arc plates.
  • An automatic rotor reversing mechanism is provided that reverses the orientation of the rotor by 180°.
  • the entire assembly is housed in a casing.
  • the air flow direction can be changed by operating the drive motor in either direction while at the same time the orientation of the rotor is changed.
  • An air blower of this type is known from DE-A-72180.
  • the casing has to be fixed to the ceiling in order to provide a sufficient stability.
  • the impeller is usually provided with a rotor having camber, the blowing efficiency of the blower in the forward rotation mode of the impeller will be better than in the reverse rotation mode which also exhibits increased noise emission.
  • this type of blower is not suited for bi-directional air blowing. If on the other hand a flat plate type rotor without camber is used, the same blowing performance in both directions can be achieved which however is not expected to be very high.
  • an air distribution device which is constituted by an outer casing accommodating a cylindrical casing having a through opening to define a wind path in which an impeller and a drive motor for driving the impeller are mounted.
  • the wind path is perpendicular to the axis of the cylinder of the cylindrical casing which can be rotated about the axis of the cylinder to change the air flow direction.
  • BE-A-484 254 Another bi-directional air blower is known from BE-A-484 254. It has a reversible casing which houses a ventilator. The casing is suspended by a complicated outer support structure.
  • the present invention therefore intends to provide a bi-directional air blower which has a high blowing efficiency and which is small in size and therefore particularly suited for tunnels or parking decks.
  • a bi-directional air flow blower for selectively sending a wind either in a forward direction or in a reverse direction
  • said blower includes a hollow cylindrical casing defining a wind path coaxial with the axis of the cylinder, an impeller provided in the casing, a drive motor for driving said impeller, a wind direction selecting means having a motor and a drive shaft which is connected to the casing, the wind direction selecting means being adapted to reverse the orientation of the casing, and hence that of the drive motor and the impeller, wherein said casing is held by a one-arm-suspension which is formed by the drive shaft of the wind direction selecting means.
  • the impeller is disposed upstream of the wind path and the drive motor is disposed downstream of the wind path in the casing, and the drive motor is secured to the casing by means of stay vanes having a cross section such that an angle with respect to the center axis of the casing gradually decreases from the front edge toward the rear edge.
  • a stationary casing is disposed adjacent to the casing in which the impeller and drive motor are incorporated and the stationary casing defines a wind path communicating with the latter casing and has at the central axis thereof a conical wind guide.
  • the impeller has airfoil blades with camber.
  • the airfoil type rotors having camber to provide high blower efficiency in both air flow directions.
  • the impeller is driven into rotation in the same direction regardless of the desired wind direction.
  • the impeller and drive motor are also turned around together with the casing so that the wind flow is reversed.
  • the stay vane converts a high rotating dynamic pressure produced at the outlet of the impeller into a static pressure for pressure recovery as well as controls the separation on the surface of stay vane.
  • the wind pressure of blower is increased achieving highly efficient and low noise operation of the blower.
  • the conical wind guide provided within the stationary casings forms a wind path whose cross section continuously grows smaller(upstream) toward and larger(dowstream) from the boss of impeller and the drive motor which are incorporated within the casing adjacent to the fixed casing.
  • This permits the smooth acceleration and deceleration of the air flowing through the bore of casing, retarding the occurrence of separation.
  • the conical wind guide in the stationary casing arranging is separated from the casing in which the impeller and drive motor are incorporated, thus achieving a short and small casing that rotates in accordance with the desired wind direction. This is particularly advantageous in that adjacent casings will not interfere each other during rotation even if a plurality of blowers for ventilation are suspended from the tunnel ceiling side by side in a narrow space.
  • the rotor 8a of the impeller 16a and has a camber shown in Figs. 3 (curved rotor whose thickness grows thinner toward the rear edge of the rotor plate or circular-arc plate whose thickness is constant along the camber line of rotor).
  • Figs. 1 to 3 show an embodiment according to a prefered embodyment of the invention.
  • a drive motor 15 supported by means of a stay vane 14 and an impeller 16 coupled to the output shaft of the drive motor 15.
  • the casing has a wind inlet 3a, a wind outlet 3b, an impeller 16 disposed upstream of the drive motor 15.
  • a cone 17 for guiding the wind is mounted at the front end of the impeller 16 and a cone 18 at the rear end of the drive motor 15.
  • the casing 3 is mounted to a motor shaft 19a of a wind-direction selecting motor 19 for selecting the wind direction such that the casing is suspended from the motor 19 mounted on the ceiling.
  • the casing 3 is rotated about the shaft 19a in the direction of the arrow C.
  • the impeller 16 has an airfoil type rotor 16a having a camber.
  • the orientation of rotor blades relative to the rotational direction a is that shown in Fig. 3.
  • the stay vane 14 aligned downstream of the rotor 16a is formed with a curved surface, so that the cross section of the stay vane is such that the angle ⁇ with respect to the central axis O of the casing 3 decreases from front edge to rear edge.
  • the casing 3 When the wind is delivered from right to left with the drive motor 15 rotated in the direction a , the casing 3 is rotated by the wind-direction selecting motor 19 so as to change the orientation of the casing 3 by 180 degrees from the position in Fig. 1 to that in Fig. 2.
  • the inlet 3a of the casing 3 is oriented to the right and an air flow is produced in the direction B within the casing 3.
  • the stay vane 14 holding the motor 15 is formed to have the aforementioned cross section so that the stay vane 14 retards the separation of wind flowing along the stay vane 14 and absorbs the dynamic pressure due to the rotating velocity produced by the impeller 16 to convert it into the static pressure.
  • the cones 17 and 18 provided at the front end of the impeller 16 and at the rear end of the drive motor 15, respectively, allow the smooth change of flow rate of air flow contributing to the retardation of separation.
  • Figs. 4 and 5 show a variation of the third embodiment as an embodiment of the fifth aspect of the invention.
  • the drive motor 15 and impeller 16 are assembled just as in the third embodiment.
  • a stationary casings 20 are suspended from the ceiling by means of wires 21 such that the stationary casings 20 are in line with the casing 3 and are disposed at the front of and at the rear of the casing 3.
  • a long conical wind guide 22 is mounted by means of the stays 23 so that the cross section of the wind path varies continuously toward the drive motor 15 and the front end of impeller 16.
  • the inlet and outlet of the casing 3 and the ends of the stationary casings 20 opposing the casing 3 are formed in an arcuate shape in concentric relation with the motor shaft 19a of the wind-direction selecting motor 19.
  • the casings are opposing each other with slight clearances therebetween.
  • the conical wind guide mounted to the stationary casing 20 smooths out the change in wind velocity just as in the third embodiment so as to control the occupance of separation.
  • the casing 3 is allowed to rotate free in the direction of the arrow C without interfering with the stationary casings 20.
  • Mounting the long conical wind guide 22 to the stationary casing 20 separately from the casing 3 permits a smaller size of the casing 3 which incorporates the drive motor 15 and impeller 16 therein. This minimizes the projection of the casing 3 to the sideway when the casing 3 is rotated.
  • the adjacent blowers may be spaced apart only by short distance between them without interference.
  • a bi-directional type axial-flow blower according to the present invention is of the aforementioned constructed and has the following advantages.
  • the orientation of the casing in which the impeller and drive motor are assembled is reversed in accordance with the desired wind direction.
  • a complex mechanism for changing the orientation of rotor blade is not required while the wind direction can be switched between the forward and reverse directions by rotating the casing with both the direction of rotor blade cascade and the motor direction unchanged.
  • the impeller is disposed upstream of the wind in the casing and the drive motor downstream while at the same time the drive motor is mounted to the casing by means of a stay vane whose cross section is such that the angle with respect to the center axis of casing decreases from front edge to rear edge.
  • the stationary casing having a wind path is disposed adjacent the casing, which has the impeller and drive motor assembled therein, in such a away that the wind path communicates with the casing.
  • the conical wind guide is provided within the stationary casing on the central axis. This allows the change in wind velocity to be smoothed out for high efficiency and low noise as well as achieves the smallest possible casing that is rotated to be oriented in accordance with the wind direction.
  • the blower is advantageous in that if the blower is used for the ventilation in the tunnel where a plurality of blowers are to be aligned in a small space near the ceiling, the casings of adjacent blowers will not interfere each other when the casings are rotated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Claims (9)

  1. Zweirichtungsaxialgebläse mit umkehrbarer Strömungsrichtung zum Fördern von Wind wahlweise in eine Vorwärts- oder in eine Rückwärtsrichtung, das aufweist:
    ein hohlzylindrisches Gehäuse (3) zur Bildung eines Strömungsweges koaxial zur Zylinderachse,
    ein in dem Gehäuse (3) vorgesehenes Laufrad (16),
    einen Antriebsmotor (15) zum Betreiben des Laufrades (16),
    eine Strömungsrichtungswahlvorrichtung mit einem Motor (19) und einer Antriebswelle (19a), die mit dem Gehäuse (3) verbunden ist, wobei die Orientierung des Gehäuses (3) durch die Strömungsrichtungswahlvorrichtung umkehrbar ist und damit
    auch die des Antriebsmotors (15) und des Laufrades (16), und bei dem das Gehäuse (3) durch eine Einarmaufhängung gehalten ist, die durch die Antriebswelle (19a) der Strömungsrichtungswahlvorrichtung gebildet wird.
  2. Zweirichtungsaxialgebläse nach Anspruch 1, dadurch gekennzeichnet, daß das Laufrad (16) stromauf des Strömungsweges angeordnet ist und der Antriebsmotor (15) stromab des Strömungsweges in dem Gehäuse (3) angeordnet ist, wobei der Antriebsmotor (15) an dem Gehäuse (13) durch Flügelstreben (14) angebracht ist, die einen solchen Querschnitt aufweisen, bei dem ein Winkel zu der Mittelachse des Gehäuse kontinuierlich von der Vorderkante zu der Hinterkante einer Flügel strebe (14) abnimmt.
  3. Zweirichtungsaxialgebläse nach Anspruch 1, dadurch gekennzeichnet, daß neben dem Gehäuse (3), in dem das Laufrad (16) und der Antriebsmotor (15) angeordnet sind, ein stationäres Gehäuse (20) angeordnet ist, das einen Strömungsweg bildet, der mit dem Gehäuse (3) kommuniziert und das an seiner Mittelachse eine konische Strömungsleitvorrichtung (22) aufweist.
  4. Zweirichtungsaxialgebläse nach Anspruch 1, dadurch gekennzeichnet, daß ein Paar stationärer Gehäuse (20) vorgesehen sind, die an beiden Enden des zylindrischen Gehäuses (3) und in Reihe mit diesem angeordnet sind.
  5. Zweirichtungsaxialgebläse nach Anspruch 4, dadurch gekennzeichnet, daß der Einlaß und der Auslaß des Gehäuses (3) und die jeweiligen Enden der stationären Gehäuse (20) bogenförmig ausgebildet sind.
  6. Zweirichtungsaxialgebläse nach Anspruch 5, dadurch gekennzeichnet, daß das zylindrische Gehäuse (3) und das jeweilige stationäre Gehäuse (20) mit einem kleinen Zwischenraum einander gegenüberliegen.
  7. Zweirichtungsaxialgebläse nach einem der Ansprüche 1 und 4 bis 6, dadurch gekennzeichnet, daß in der Mitte jedes Gehäuses (20) eine lange, konische Strömungsleitvorrichtung (22) angebracht ist.
  8. Zweirichtungsaxialgebläse nach Anspruch 7, dadurch gekennzeichnet, daß die konische Strömungsleitvorrichtung (22) über Streben (23) befestigt ist.
  9. Zweirichtungsaxialgebläse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Laufrad (15) Tragflächenflügelblätter mit Wölbung aufweist.
EP94102599A 1990-07-18 1991-07-17 Axialgebläse mit umkehrbaren Strömungsrichtung Expired - Lifetime EP0606108B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP189868/90 1990-07-18
JP18986890 1990-07-18
JP2254498A JP2712800B2 (ja) 1990-07-18 1990-09-25 正逆双方向型軸流送風機
JP254498/90 1990-09-25
EP19910111960 EP0467336B1 (de) 1990-07-18 1991-07-17 Axialgebläse mit umkehrbarer Strömungsrichtung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP91111960.0 Division 1991-07-17

Publications (2)

Publication Number Publication Date
EP0606108A1 EP0606108A1 (de) 1994-07-13
EP0606108B1 true EP0606108B1 (de) 1997-03-05

Family

ID=16248518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102599A Expired - Lifetime EP0606108B1 (de) 1990-07-18 1991-07-17 Axialgebläse mit umkehrbaren Strömungsrichtung

Country Status (2)

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EP (1) EP0606108B1 (de)
JP (1) JP2712800B2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899306A (zh) * 2019-03-28 2019-06-18 广州京海科技有限公司 一种用于隧道通风的工作范围广的风机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2569693Y2 (ja) * 1993-07-08 1998-04-28 建設省九州地方建設局長 軸流送風機
FR2723150B1 (fr) * 1994-07-29 1996-09-06 Morin Philippe Pale d'helice de ventilateur
JP3528285B2 (ja) * 1994-12-14 2004-05-17 株式会社日立製作所 軸流送風機
GB2334756A (en) * 1998-01-15 1999-09-01 Gebhardt Ventilatoren Fan unit with two fans, guide vanes and tapering duct
GB2340888A (en) * 1998-07-07 2000-03-01 Nuaire Ltd Twin fan with induced airflow
CN100443736C (zh) * 2004-12-23 2008-12-17 广东松下环境系统有限公司 换气扇
JP2009245818A (ja) * 2008-03-31 2009-10-22 Equos Research Co Ltd 燃料電池装置
JP5285537B2 (ja) * 2009-08-18 2013-09-11 株式会社三井三池製作所 ジェットファン
KR101280998B1 (ko) * 2011-05-26 2013-07-08 탱크테크 (주) 모터 외장형 양방향 펌프
CN104806538B (zh) * 2015-04-02 2017-11-28 佛山市南海九洲普惠风机有限公司 一种轴流式消防排烟风机
JP6299792B2 (ja) 2016-03-24 2018-03-28 トヨタ自動車株式会社 移動体の姿勢制御のための空気噴出式推力発生装置
US11945697B2 (en) 2018-02-08 2024-04-02 Vita Inclinata Ip Holdings Llc Multiple remote control for suspended load control equipment apparatus, system, and method
US11209836B1 (en) 2018-02-08 2021-12-28 Vita Inclinata Technologies, Inc. Long line loiter apparatus, system, and method
US11142316B2 (en) 2018-02-08 2021-10-12 Vita Inclinata Technologies, Inc. Control of drone-load system method, system, and apparatus
US11142433B2 (en) * 2018-02-08 2021-10-12 Vita Inclinata Technologies, Inc. Bidirectional thrust apparatus, system, and method
JP6757102B2 (ja) * 2018-06-08 2020-09-16 株式会社電業社機械製作所 ジェットファンの支持構造
CN109555714B (zh) * 2019-01-23 2024-07-09 英飞同仁风机股份有限公司 一种可变双进风离心风机、实现方法及系统
WO2020176665A1 (en) 2019-02-26 2020-09-03 Vita Inclinata Technologies, Inc. Cable deployment apparatus, system, and methods for suspended load control equipment
US11618566B1 (en) 2019-04-12 2023-04-04 Vita Inclinata Technologies, Inc. State information and telemetry for suspended load control equipment apparatus, system, and method
US11834305B1 (en) 2019-04-12 2023-12-05 Vita Inclinata Ip Holdings Llc Apparatus, system, and method to control torque or lateral thrust applied to a load suspended on a suspension cable
CA3159437A1 (en) * 2019-11-26 2021-06-03 Derek SIKORA Bidirectional thrust apparatus, system, and method
US11620597B1 (en) 2022-04-29 2023-04-04 Vita Inclinata Technologies, Inc. Machine learning real property object detection and analysis apparatus, system, and method
US11992444B1 (en) 2023-12-04 2024-05-28 Vita Inclinata Ip Holdings Llc Apparatus, system, and method to control torque or lateral thrust applied to a load suspended on a suspension cable

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DE72180C (de) * GG. RUDOLF & ClE in Feuerbach bei Stuttgart Saugend oder drückend wirkende Ventilationsvorrichtung mittelst eines durch Wasserdruck betriebenen Ventilators
BE484254A (de) *
DE431682C (de) * 1924-06-05 1926-07-20 Siemens Schuckertwerke G M B H Ventilator fuer umkehrbare Luftfoerderung
US1932231A (en) * 1930-02-28 1933-10-24 Westinghouse Electric & Mfg Co Propeller type fluid translating device
US2555576A (en) * 1946-05-07 1951-06-05 Buffalo Forge Co Axial flow fan
US3089637A (en) * 1960-05-02 1963-05-14 Chrysler Corp Air circulating system and blower structure
JPS5571099U (de) * 1978-11-10 1980-05-16
JPS5856198U (ja) * 1981-10-09 1983-04-16 金子農機株式会社 送風方向反転変向装置
FR2531501A1 (fr) * 1982-08-03 1984-02-10 Olivier Gilbert Appareil combine ventilateur-distributeur d'air a plusieurs voies
JPH01277700A (ja) * 1988-04-28 1989-11-08 Hitachi Ltd 多段形可逆回転式軸流フアン

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109899306A (zh) * 2019-03-28 2019-06-18 广州京海科技有限公司 一种用于隧道通风的工作范围广的风机

Also Published As

Publication number Publication date
JP2712800B2 (ja) 1998-02-16
EP0606108A1 (de) 1994-07-13
JPH04175500A (ja) 1992-06-23

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