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WO2019130441A1 - Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond - Google Patents

Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond Download PDF

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Publication number
WO2019130441A1
WO2019130441A1 PCT/JP2017/046753 JP2017046753W WO2019130441A1 WO 2019130441 A1 WO2019130441 A1 WO 2019130441A1 JP 2017046753 W JP2017046753 W JP 2017046753W WO 2019130441 A1 WO2019130441 A1 WO 2019130441A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
mounting plate
axis
center
blade mounting
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.)
Ceased
Application number
PCT/JP2017/046753
Other languages
English (en)
Japanese (ja)
Inventor
青木　普道
比出晴 小野
真裕 上田
哲也 福嶋
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2017/046753 priority Critical patent/WO2019130441A1/fr
Priority to JP2019561444A priority patent/JP6789414B2/ja
Priority to MYPI2020003201A priority patent/MY184176A/en
Priority to CN201780096157.0A priority patent/CN111492145B/zh
Publication of WO2019130441A1 publication Critical patent/WO2019130441A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an axial fan provided with a rotor for an axial fan, a rotor and a motor, and a ceiling fan installed on a ceiling.
  • Patent Document 1 discloses a ceiling fan in which a recess is provided in a blade to improve fatigue strength against repeated load in long-term use.
  • Patent Document 1 Although the strength of the blade can be improved, additional processing for providing a recess in the blade is required, and the number of manufacturing steps increases.
  • the present invention has been made in view of the above, and it is an object of the present invention to obtain a rotor for an axial flow fan in which the strength of the blades is improved without performing additional processing.
  • the present invention is a blade mounting plate fixed to a shaft of a motor for rotation, and a fastening member joined to the blade mounting plate by a fastening member and rotating together with the blade mounting plate a shaft And an impeller for forming an air flow along the
  • the blade has a blade mounting portion joined to a blade mounting plate by a fastening member, and a blade portion that generates an air flow.
  • the center of gravity of the blade is the plate thickness of the blade at the portion where the fastening member positioned on the foremost side in the rotational direction of the blade mounting plate fixes the blade mounting portion to the blade mounting plate in the axial direction of the rotary shaft of the blade mounting plate.
  • the rotor according to the present invention has an effect that the strength of the blade can be improved without performing additional processing.
  • FIG. 1 The perspective view of the ceiling fan which concerns on Embodiment 1 of this invention
  • FIG. 1 Side view of the rotor fan of the ceiling fan according to the first embodiment
  • Front view of a rotary fan of a ceiling fan according to Embodiment 1 Schematic diagram of the rotor of the ceiling fan according to the first embodiment The figure which shows the relationship between the rotation speed of the ceiling fan which concerns on Embodiment 1, and the distance in the axial direction of the rotating shaft of the blade
  • FIG. 1 is a perspective view of a ceiling fan according to Embodiment 1 of the present invention.
  • the ceiling fan 100 includes a suspending portion 1 hooked to a hook attached to the ceiling, a motor 3 as a power source, a pipe 2 connecting the suspending portion 1 and the motor 3, and a rotation driven by the motor 3
  • the wing 6 is provided.
  • the ceiling fan 100 is an axial flow fan provided with the motor 3 and the rotary wings 6, and the motor 3 is installed on the ceiling with the shaft of the motor 3 along the vertical direction.
  • FIG. 2 is a perspective view of the rotary wing of the ceiling fan according to the first embodiment.
  • FIG. 3 is a side view of the rotary wing of the ceiling fan according to the first embodiment.
  • the rotary wing 6 is provided with a blade mounting plate 4 which is attached to the shaft of the motor 3 and rotates, and a blade 5 joined to the blade mounting plate 4 and radially extending around a rotation axis AX of the blade mounting plate 4.
  • the blade 5 includes a blade mounting portion 5 a fixed to the blade mounting plate 4 and a blade 5 b generating an air flow.
  • the blade portion 5 b is inclined with respect to a plane perpendicular to the shaft of the motor 3.
  • the blade attachment portion 5a and the blade portion 5b are integrally formed.
  • FIG. 4 is a front view of the rotary wing of the ceiling fan according to the first embodiment.
  • FIG. 4 shows a state in which the rotary wing 6 is viewed from the direction shown by the arrow v in FIG.
  • the blade mounting portion 5 a is fixed to the blade mounting plate 4 by two fastening members 7.
  • the center C1 of the plate thickness of the blade 5 at the portion where the fastening member 7 located forward in the rotational direction fixes the blade attachment portion 5a to the blade attachment plate 4 and the fastening member located rearward in the rotational direction 7 is perpendicular to the rotation axis AX of the blade mounting plate 4 through the midpoint C3 of the line connecting the blade mounting portion 5a to the blade thickness plate center C2 at the portion fixing the blade mounting portion 5a to the blade mounting plate 4
  • the plane is defined as the plane L perpendicular to the axis.
  • a plane perpendicular to the rotation axis AX of the blade mounting plate 4 can be defined as an axis-perpendicular plane L through a midpoint of a line connecting the center of the plate thickness of 5 and the center of the plate thickness.
  • FIG. 5 is a front view of the rotary wing of the ceiling fan according to the first embodiment. Even when the blade mounting portion 5a is inclined with respect to the rotation axis AX, the plate thickness of the blade 5 at the portion where the fastening member 7 located forward in the rotational direction fixes the blade mounting portion 5a to the blade mounting plate 4 Middle point C3 of a line connecting the center C1 of the blade and the center C2 of the plate thickness of the blade 5 at the portion where the fastening member 7 located at the rear in the rotational direction fixes the blade mounting portion 5a to the blade mounting plate 4 A plane perpendicular to the rotation axis AX of the blade mounting plate 4 can be defined as an axis perpendicular plane L.
  • FIG. 1 is a front view of the rotary wing of the ceiling fan according to the first embodiment.
  • a plane perpendicular to the rotation axis AX of the blade mounting plate 4 can be defined as an axis-perpendicular plane L through a midpoint of a line connecting the center of the plate thickness of 5 and the center of the plate thickness.
  • the rotary wings 6 rotate with the shaft. Since the blade portion 5b is inclined with respect to a plane perpendicular to the shaft of the motor 3, the rotation of the rotary blade 6 generates an air flow in the direction indicated by the arrow A in FIG.
  • the ceiling fan 100 shown in FIG. 1 includes five blades 5, but the number of the blades 5 may be two or more, and is not limited to five.
  • the five blades 5 of the ceiling fan 100 have the same shape.
  • FIG. 6 is a schematic view of a rotary wing of a ceiling fan according to the first embodiment.
  • the center of gravity G of the blade 5 is the position of the center of gravity of one blade 5 and is lower than the plane L perpendicular to the rotation axis AX of the blade mounting plate 4 through the thickness center of the blade 5 of the blade mounting portion 5a. That is, it is on the downstream side, and is separated from the rotation axis AX of the blade attachment plate 4 in the radial direction by r, and away from the plane L perpendicular to the axis L in the axial direction of the rotation axis AX of the blade attachment plate 4.
  • a centrifugal force Fr acts on the blades 5 in parallel to the plane L perpendicular to the axis L as the rotation is performed.
  • the centrifugal force Fr applied to the blade 5 is a tensile component force Frt in the direction of the barycentric line K passing through the joint point P of the blade mounting portion 5a and the center of gravity G of the blade 5 and a bending component force Frb in the direction perpendicular to the barycentric line K Can be broken down into
  • the bending component Frb due to the centrifugal force Fr works in the upstream direction. That is, the bending component force Frb acts to cancel the force Fg due to its own weight, and the force for bending the blade 5 is weakened, and the stress generated in the blade 5 is reduced.
  • the centrifugal force Fr exerted on the blade 5 can be expressed as mr ⁇ 2.
  • the angle between the plane L and the center of gravity line K is ⁇
  • the bending component force Frb due to the centrifugal force can be expressed as mr ⁇ 2 ⁇ sin ⁇ .
  • the distance h in the axial direction of the rotation axis AX of the blade attachment plate 4 between the plane L perpendicular to the axis and the center of gravity G of the blade 5 can be expressed as sin ⁇ ⁇ h / r.
  • the bending force component Frb by centrifugal force considered to be proportional to the mh ⁇ 2. If ⁇ (h / r) ⁇ sin (h / r) ⁇ / sin (h / r) is about 0.01, it can be approximated as sin ⁇ ⁇ h / r. That is, if the angle ⁇ between the plane L and the center of gravity line K is 15 ° or less, it can be considered that an approximation of sin ⁇ ⁇ h / r holds.
  • the force for bending the blade 5 is minimized. That is, by determining the distance h in the axial direction of the rotation axis AX of the blade mounting plate 4 between the center of gravity G of the blade 5 and the plane L perpendicular to the axis so that the force Fg by its own weight balances with the bending component force Frb due to centrifugal force. The stress applied to the blades 5 can be reduced.
  • the force Fg by its own weight and the bending component Frb by centrifugal force are both forces acting on the blade 5 of mass m, and the gravitational acceleration is a constant, so the center of gravity G of the blade 5 and the plane L perpendicular to the axis L
  • the coefficient K can be obtained by analyzing the blade 5 by computer aided design, and takes a value of 2 or more and 3 or less.
  • the distance h between the center of gravity G of the blade 5 and the axis perpendicular surface L in the axial direction of the rotation axis AX of the blade mounting plate 4 is 2 ⁇ K ⁇ 3 and 1 / (K ⁇ N 2 ) ⁇ (g ⁇ ( By selecting so as to be 60 / 2 ⁇ ) 2 ), the stress generated in the blade 5 can be reduced.
  • FIG. 7 is a view showing the relationship between the number of revolutions of the ceiling fan according to the first embodiment and the distance between the center of gravity of the blade and the plane perpendicular to the axis in the axial direction of the rotation axis of the blade mounting plate.
  • the ceiling fan 100 is used in a rotation speed N in a range of 200 rotations per minute to 260 rotations per minute.
  • the distance h between the center of gravity G of the blade 5 and the axis-perpendicular surface L in the axial direction of the rotation axis AX of the blade mounting plate 4 is about 11 mm at 200 revolutions per minute and about 4 mm at 260 revolutions per minute.
  • the speed is 200 rotations per minute to 260 rotations per minute.
  • the stress generated in the blade 5 can be reduced.
  • the use rotation speed of the ceiling fan 100 is not limited to the illustrated range of 200 rotations per minute to 260 rotations per minute.
  • FIG. 8 is a side view of the rotary wing of the ceiling fan according to the first embodiment. Since the center of gravity G of the blade 5 is provided on the downstream side of the plane L, the distance b between the lower end 5l of the blade 5 which is the downstream end of the air flow generated by the blade 5 and the plane L is It is longer than the distance a between the upper end 5 h of the blade 5 which is the upstream end of the air flow generated by the air flow 5 and the plane L perpendicular to the axis L.
  • the distance h between the plane L perpendicular to the axis L and the lower end 5 l of the wing 5 in order to make the distance h in the axial direction of the rotation axis AX of the wing mounting plate 4 between the center G of the wing 5 and the plane L perpendicular to the axis b is 1.3 or more and 2.2 or less times the distance a between the plane L and the upper end 5 h of the blade 5.
  • the blade 5 is integrally formed with the blade mounting portion 5a and the blade and wing portion 5b.
  • the blade mounting portion 5a and the blade and wing portion 5b may be separate parts and fastened.
  • the ceiling fan 100 according to the first embodiment and the blades 5 used for the rotary wings 6 are additionally processed by setting the position of the center of gravity G so that the force Fg by its own weight and the bending component force Frb by centrifugal force are balanced. You can improve the strength without doing
  • the present invention is also applicable to the blades of an axial flow fan in which the rotation axis AX of the blade attachment plate 4 is installed along the vertical direction.
  • the configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

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

Abstract

L'invention concerne une pale (6) de rotor comprenant : une plaque (4) de montage d'aube fixée à un arbre d'un moteur et apte à tourner ; et une aube (5) reliée à la plaque (4) de montage d'aube au moyen d'un élément de fixation et pouvant tourner avec la plaque (4) de montage d'aube afin de former un écoulement d'air le long de l'arbre. L'aube (5) comprend une partie de montage d'aube reliée à la plaque (4) de montage d'aube au moyen de l'élément de fixation, et une partie pale d'aube destinée à produire l'écoulement d'air. L'aube (5) comporte un centre de gravité positionné, dans une direction axiale d'un axe de rotation (AX) de la plaque (4) de montage d'aube, du côté aval d'un plan (L) perpendiculaire à l'axe, ledit plan : passant par le point central d'un segment de ligne reliant le centre dans l'épaisseur de plaque de l'aube (5) où l'élément de fixation positionné le plus en avant dans la direction de rotation de la plaque (4) de montage d'aube comporte la partie de montage d'aube fixée à la plaque (4) de montage d'aube, au centre dans l'épaisseur de plaque de l'aube (5) où l'élément de fixation positionné le plus en arrière dans la direction de rotation comporte la partie de montage d'aube fixée à la plaque (4) de montage d'aube ; et étant orthogonal à l'axe de rotation (AX) de la plaque (4) de montage d'aube.
PCT/JP2017/046753 2017-12-26 2017-12-26 Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond Ceased WO2019130441A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2017/046753 WO2019130441A1 (fr) 2017-12-26 2017-12-26 Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond
JP2019561444A JP6789414B2 (ja) 2017-12-26 2017-12-26 軸流送風機及び天井扇
MYPI2020003201A MY184176A (en) 2017-12-26 2017-12-26 Rotor blade, axial-flow blower, and ceiling fan
CN201780096157.0A CN111492145B (zh) 2017-12-26 2017-12-26 旋转叶片、轴流鼓风机及吊扇

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/046753 WO2019130441A1 (fr) 2017-12-26 2017-12-26 Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond

Publications (1)

Publication Number Publication Date
WO2019130441A1 true WO2019130441A1 (fr) 2019-07-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/046753 Ceased WO2019130441A1 (fr) 2017-12-26 2017-12-26 Pale de rotor, soufflante à écoulement axial, et ventilateur de plafond

Country Status (4)

Country Link
JP (1) JP6789414B2 (fr)
CN (1) CN111492145B (fr)
MY (1) MY184176A (fr)
WO (1) WO2019130441A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111396358A (zh) * 2020-05-25 2020-07-10 佛山市南海九洲普惠风机有限公司 一种新型玻纤壁式轴流通风机
PL130723U1 (pl) * 2022-04-11 2023-10-16 Wróblewski Andrzej Przedsiębiorstwo Techniczno-Handlowe Energowent Wirnik wentylatora osiowego

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155600A (ja) * 1983-02-24 1984-09-04 Toshiba Corp 羽根車
JPS59167992U (ja) * 1983-04-27 1984-11-10 株式会社東芝 羽根車
JPS6058894U (ja) * 1983-09-29 1985-04-24 三洋電機株式会社 天井扇
JPS6139499U (ja) * 1984-08-15 1986-03-12 三菱重工業株式会社 送風機用ハブ
JP2007170292A (ja) * 2005-12-22 2007-07-05 Matsushita Electric Ind Co Ltd 送風装置
JP2007315303A (ja) * 2006-05-26 2007-12-06 Ihi Corp ターボファンエンジンのファン動翼
US20100278646A1 (en) * 2004-03-08 2010-11-04 Michael John Hort Fan, especially a ceiling fan with a balanced single blade

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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CN2823617Y (zh) * 2005-07-22 2006-10-04 盛才良 叶根零弯矩结构的大型轴流风机
EP2025947B1 (fr) * 2007-07-31 2013-02-27 R.E.M. Holding S.R.L. Système de connexion de profil de moyeu pour ventilateur axial et ventilateur axial doté de ce système de connexion
CN101858361B (zh) * 2010-05-19 2013-06-26 威海克莱特菲尔风机股份有限公司 一种叶片与轮毂铰接的轴流叶轮
WO2012119662A1 (fr) * 2011-03-07 2012-09-13 Multi-Wing International A/S Ventilateur de refroidissement pour moteur
JP5849524B2 (ja) * 2011-08-19 2016-01-27 日本電産株式会社 軸流型送風ファン
CN102588340A (zh) * 2012-04-01 2012-07-18 上海尔华杰机电装备制造有限公司 一种预置锥角的风机叶轮
CN104500448A (zh) * 2014-12-14 2015-04-08 惠阳航空螺旋桨有限责任公司 一种轴流冷却塔风机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155600A (ja) * 1983-02-24 1984-09-04 Toshiba Corp 羽根車
JPS59167992U (ja) * 1983-04-27 1984-11-10 株式会社東芝 羽根車
JPS6058894U (ja) * 1983-09-29 1985-04-24 三洋電機株式会社 天井扇
JPS6139499U (ja) * 1984-08-15 1986-03-12 三菱重工業株式会社 送風機用ハブ
US20100278646A1 (en) * 2004-03-08 2010-11-04 Michael John Hort Fan, especially a ceiling fan with a balanced single blade
JP2007170292A (ja) * 2005-12-22 2007-07-05 Matsushita Electric Ind Co Ltd 送風装置
JP2007315303A (ja) * 2006-05-26 2007-12-06 Ihi Corp ターボファンエンジンのファン動翼

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111396358A (zh) * 2020-05-25 2020-07-10 佛山市南海九洲普惠风机有限公司 一种新型玻纤壁式轴流通风机
PL130723U1 (pl) * 2022-04-11 2023-10-16 Wróblewski Andrzej Przedsiębiorstwo Techniczno-Handlowe Energowent Wirnik wentylatora osiowego
PL74174Y1 (pl) * 2022-04-11 2025-11-24 Wróblewski Andrzej Przedsiębiorstwo Techniczno-Handlowe Energowent Wirnik wentylatora osiowego

Also Published As

Publication number Publication date
CN111492145B (zh) 2022-04-05
JPWO2019130441A1 (ja) 2020-04-02
CN111492145A (zh) 2020-08-04
MY184176A (en) 2021-03-24
JP6789414B2 (ja) 2020-11-25

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