WO2004076865A2 - Soufflante grande vitesse depourvue de courroie - Google Patents

Soufflante grande vitesse depourvue de courroie Download PDF

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Publication number
WO2004076865A2
WO2004076865A2 PCT/US2004/003345 US2004003345W WO2004076865A2 WO 2004076865 A2 WO2004076865 A2 WO 2004076865A2 US 2004003345 W US2004003345 W US 2004003345W WO 2004076865 A2 WO2004076865 A2 WO 2004076865A2
Authority
WO
WIPO (PCT)
Prior art keywords
impeller
air
blades
volute
drive shaft
Prior art date
Application number
PCT/US2004/003345
Other languages
English (en)
Other versions
WO2004076865A3 (fr
Inventor
Daniel Snyder
Kevin Beyer
Original Assignee
Daniel Snyder
Kevin Beyer
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 Daniel Snyder, Kevin Beyer filed Critical Daniel Snyder
Publication of WO2004076865A2 publication Critical patent/WO2004076865A2/fr
Publication of WO2004076865A3 publication Critical patent/WO2004076865A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors

Definitions

  • the present invention relates to a centrigugal air blower and, more
  • a centrifugal fan in accordance with the current art includes a motor 2 and a motor-driven impeller comprising a plurality of fan blades arranged at a 3 predetermined pitch around a rotation axis. By rotating the plurality of the 4 blades on the rotation axis, air is taken in the direction of the rotation axis and 5 discharged in a direction that is both tangential to the rotation of the plurality 6 of the blades and orthogonal to the rotation axis.
  • a volute (housing) is 7 disposed around the impeller and directs the flow of air through the fan.
  • centrifugal fans in accordance with the prior art are disclosed in U.S. Patents 6,210,118; 5,964,576; 5,813,834; 5,707,209; 5,478,201; 5,474,422; 5,324,167; 5,165,857; 5,156,524; 5,141,397; 4,913,621 ; 4,874,293; 4,662,830; 4,531,890; 4,265,592 and 4,061,441.
  • These representative disclosures of prior art centrifugal fans while not exhaustive, teach a centrifugal fan comprising either a low-speed direct coupled motor- impeller assembly or a high-speed indirectly coupled motor-impeller assembly. Noise is a common problem with centrifugal fans.
  • Miyazawa in U.S. Patent 6,488,472, discloses a low-noise axial fan having an impeller comprising a plurality of blades arranged around a rotation axis at predetermined and varied layout pitches. For instance, the layout pitch between the two adjacent blades may be different from the layout pitch between the remaining blades. Miyazawa asserts that the arrangement of blades controls the whirring sound of the fan, which whirring sound is increased when the blades are arranged at an equal layout pitch. Fujita, et al., in U.S.
  • Patent 5,964,576 disclose an impeller for a centrifugal fan having fifty or more blades of not larger than 250 mm in outer diameter which has a casing and a multi-blade impeller rotatably supported in the casing. A centrifugal force is applied to air entering an inlet formed on the casing when the impeller is rotated, and high pressure air is ejected through an outlet formed on a portion of the casing.
  • An outer peripheral surface of the impeller is inclined or curved so as to have an inlet side large diameter portion and a blade holding base side small diameter portion, or is stepped so as to have an inlet side cylindrical outer peripheral surface of large diameter and a blade holding base side cylindrical outer peripheral surface of small diameter connected to the inlet side cylindrical outer peripheral surface.
  • a drive belt and pulley assembly interposed between the output drive shaft of the motor and the impeller, which is in accordance with the prior art fan assemblies operating at rotational velocities above 15,000 rpm, is yet another source of both mechanical failure and noise.
  • the impeller must be perfectly balanced in order to maintain its structural integrity and produce a low level of noise.
  • a centrifugal fan that can operate at rotational velocities between 15,000 and 100,000 rpm at a relatively low level of noise with minimal mechanical failure.
  • Figure 1 is a longitudinal cross-sectional view of a centrifugal fan assembly in accordance with the present invention.
  • Figure 2 is a perspective view of an impeller for a centrifugal fan in accordance with the present invention.
  • Figure 3 is a transverse cross-sectional view of the impeller of Figure 2 taken along section line 3-3.
  • Figure 4 is an end view (viewed from the right in Figure 1) of the impeller illustrated in Figures 2 and 3, rotatably housed within a volute. The motor is not visible in the drawing. , . DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Prior art high-speed centrifugal fans employ mechanical amplification to cause an impeller to rotate at speeds greater than the rotational speed of the motor which, in accordance with the prior art, operates at 3600 rpm.
  • the term "high-speed motor”, as used herein, refers to an electric motor operating at speeds greater than 3600 rpm and, most preferably, at speeds greater than 15,000 rpm.
  • the interposition of mechanical amplification means such as pulleys and a drive belt or gears disposed between the motor output shaft and the impeller in order to increase the rotational velocity of the impeller introduces a source of potential failure into the assembly.
  • FIG 1 is a longitudinal cross-sectional view of a direct-drive high- speed centrifugal fan assembly, indicated at numeral 10, in accordance with the present invention.
  • the centrifugal fan 10 includes a high-speed motor 11 having an axial output shaft 12, a distal end 12a of shaft 12 being directly attached to an impeller 13.
  • a volute 14 having an air output port 15 substantially encloses the impeller 13. In operation, air is drawn into an air intake port 16 of the volute 14 by the rotating blades of the impeller 13 and forced through the air output port 15 to generate a high-velocity working air stream adjacent the output port 15 which may be used, for example, for
  • ventilating moisture or a volatile solvent from a work area means that the centrifugal fan may be employed either as a blower or as a vacuum.
  • the impeller 13 comprises a circular plate 20 supporting: (a) a
  • Each of the blades 22 has a curvilinear outer edge 23 and a curvilinear inner edge 24 abutting the outer surface of the cylindrical post 21 and affixed thereto.
  • Each blade 22 further has a straight top edge 25 and a curvilinear bottom edge 26 affixed to the circular plate 20.
  • the four edges 23, 24, 25 and 26 bound an arcuately contoured blade surface 27.
  • centrifugal fan in accordance with the present invention may be employed either as a blower or as a vacuum. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention. What we claim is:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention a trait à une soufflante centrifuge de puissance élevée à grande vitesse et à entraînement direct. La soufflante utilise un moteur électrique grande vitesse (>15,000 tours-minute) comportant un arbre d'entraînement secondaire qui est directement relié à une turbine logée à rotation au sein d'une volute. L'ensemble permet la rotation de la turbine à des vitesses allant jusqu'à 100,000 tours-minute sans interposition d'engrenages multiplicateurs ou de courroies et de poulies entre l'arbre d'entraînement secondaire du moteur et la turbine. La suppression d'un ensemble d'accouplement indirect entre l'arbre d'entraînement secondaire du moteur et la turbine permet d'obtenir un aspirateur/souffleur de puissance élevée à grande vitesse présentant une fiabilité supérieure à celle d'ensembles à accouplement indirect.
PCT/US2004/003345 2003-02-27 2004-02-04 Soufflante grande vitesse depourvue de courroie WO2004076865A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/376,661 2003-02-27
US10/376,661 US20040170497A1 (en) 2003-02-27 2003-02-27 Beltless high velocity air blower

Publications (2)

Publication Number Publication Date
WO2004076865A2 true WO2004076865A2 (fr) 2004-09-10
WO2004076865A3 WO2004076865A3 (fr) 2005-02-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003345 WO2004076865A2 (fr) 2003-02-27 2004-02-04 Soufflante grande vitesse depourvue de courroie

Country Status (2)

Country Link
US (2) US20040170497A1 (fr)
WO (1) WO2004076865A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10605111B2 (en) 2014-07-28 2020-03-31 Cummins Ltd. Turbine generator with an internal rotor support shaft
CN111188652A (zh) * 2020-03-11 2020-05-22 谢劲松 一种负压叶轮转子发动机

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TWI235204B (en) * 2003-10-31 2005-07-01 Delta Electronics Inc Centrifugal fan and its housing
US20060032484A1 (en) * 2004-08-11 2006-02-16 Hutchinson Sean G Electro-charger
US8303297B2 (en) * 2007-10-31 2012-11-06 Webster Engineering & Manufacturing Co., Llc Method and apparatus for controlling combustion in a burner
US8529665B2 (en) * 2010-05-12 2013-09-10 Praxair Technology, Inc. Systems and methods for gas separation using high-speed induction motors with centrifugal compressors
CN101915249A (zh) * 2010-08-27 2010-12-15 苏州顶裕节能设备有限公司 一种散热风机
CN102444426B (zh) 2010-09-30 2015-05-27 阿尔斯通技术有限公司 改装汽轮机的方法
CN101963158A (zh) * 2010-10-29 2011-02-02 天津津鼓风机有限责任公司 电机直联式单级高速鼓风机
JP5717046B2 (ja) * 2010-11-12 2015-05-13 日本電産株式会社 送風ファン
GB2493972B (en) 2011-08-26 2014-12-03 Dyson Technology Ltd Rotor assembly for a turbomachine
GB2493973B (en) 2011-08-26 2015-04-15 Dyson Technology Ltd Rotor assembly for a turbomachine
GB2493975B (en) 2011-08-26 2015-02-11 Dyson Technology Ltd Turbomachine
GB2504415B (en) * 2011-08-26 2014-08-13 Dyson Technology Ltd Turbomachine
CN102966579A (zh) * 2012-12-12 2013-03-13 北京动力机械研究所 一种采用多级平板式转子的增压装置
US9823169B1 (en) * 2013-04-22 2017-11-21 The United States Of America As Represented By The Secretary Of The Department Of The Interior Cyclonic fugitive dust sampler
US9480282B2 (en) * 2013-07-31 2016-11-01 Evans Mactavish Agricraft, Inc. Feed device for linear airflow separator
CN103775357A (zh) * 2014-01-06 2014-05-07 广东美芝制冷设备有限公司 旋转式压缩机
US9371828B2 (en) * 2014-03-05 2016-06-21 Dongguan Tiger Point Metal & Plastic Products Co., Ltd. External automatic control smart air pump
US9983596B2 (en) 2015-12-17 2018-05-29 Venturedyne, Ltd. Environmental sensor and method of operating the same
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9857285B2 (en) 2015-12-17 2018-01-02 Venturedyne, Ltd. Environmental sensor and method of operating the same
WO2018068139A1 (fr) * 2016-10-11 2018-04-19 Sleepwell Solutions Inc. Ventilateurs de lit et procédés d'utilisation
WO2018175938A1 (fr) 2017-03-24 2018-09-27 Johnson Controls Technology Company Compresseur de moteur à palier magnétique
JP6988215B2 (ja) * 2017-07-12 2022-01-05 株式会社Ihi 遠心圧縮機インペラ及び遠心圧縮機
IT201700097796A1 (it) * 2017-08-31 2019-03-03 Nuovo Pignone Tecnologie Srl Sistemi di turbomacchine con refrigerazione di cuscini magnetici attivi e metodo
CN110439634B (zh) * 2019-08-19 2022-03-11 哈尔滨电气股份有限公司 一种用于直联天然气向心透平膨胀机发电设备
US11686315B2 (en) * 2020-08-11 2023-06-27 Hunter Fan Company Ceiling fan and impeller blade
US11994140B2 (en) 2020-12-21 2024-05-28 Copeland Lp Surge control systems and methods for dynamic compressors
US11428233B2 (en) * 2020-12-21 2022-08-30 Emerson Climate Technologies, Inc. Surge control systems and methods for dynamic compressors
CN112680996B (zh) * 2021-01-11 2023-10-10 振欣透平机械有限公司 一种提高纸机效能的系统及方法
WO2024047275A1 (fr) * 2022-09-02 2024-03-07 Wärtsilä Finland Oy Logement de paliers pour une pompe à liquide de refroidissement, pompe à liquide de refroidissement et système de refroidissement

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10605111B2 (en) 2014-07-28 2020-03-31 Cummins Ltd. Turbine generator with an internal rotor support shaft
CN111188652A (zh) * 2020-03-11 2020-05-22 谢劲松 一种负压叶轮转子发动机

Also Published As

Publication number Publication date
US20050158172A1 (en) 2005-07-21
US20040170497A1 (en) 2004-09-02
WO2004076865A3 (fr) 2005-02-24

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