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WO1999067535A1 - Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur - Google Patents

Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur Download PDF

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Publication number
WO1999067535A1
WO1999067535A1 PCT/BR1998/000036 BR9800036W WO9967535A1 WO 1999067535 A1 WO1999067535 A1 WO 1999067535A1 BR 9800036 W BR9800036 W BR 9800036W WO 9967535 A1 WO9967535 A1 WO 9967535A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
shaft
section
drive shaft
shaped cross
Prior art date
Application number
PCT/BR1998/000036
Other languages
English (en)
Inventor
Juan Carlos Carne Correa
Original Assignee
Springer Carrier S.A.
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 Springer Carrier S.A. filed Critical Springer Carrier S.A.
Priority to PCT/BR1998/000036 priority Critical patent/WO1999067535A1/fr
Priority to AU79009/98A priority patent/AU7900998A/en
Publication of WO1999067535A1 publication Critical patent/WO1999067535A1/fr

Links

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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts

Definitions

  • the invention generally relates to air distribution units of the type commonly used in air conditioning, heating or ventilation systems, more particularly it relates to mounting of a fan which may be used in such systems.
  • one general type of air conditioning system often referred to as a split system, includes separate indoor and outdoor units.
  • the outdoor unit includes a compressor, a heat exchanger and a fan.
  • the indoor unit includes a heat exchanger and a fan. In operation, the indoor fan draws air into the indoor unit, through an inlet thereof, and forces the air over the indoor heat exchanger and then out of the indoor unit, through an outlet opening therein.
  • the outdoor fan draws air into the outdoor unit, through an inlet, forces that air over the outdoor heat exchanger and then forces that air out of the outdoor unit through an outlet therein.
  • a compressor causes a refrigeration fluid to circulate through and between the indoor/outdoor heat exchangers.
  • the refrigerant absorbs heat from the air passing over that heat exchanger, cooling that air.
  • the air passing over the heat exchanger absorbs heat from the refrigerant passing therethrough.
  • a common arrangement for the indoor fan is a horizontally mounted motor having a drive shaft extending from one or both ends thereof and having a squirrel cage type centrifugal fan mounted to the shaft.
  • the mounting of the fan to the shaft is achieved with mounting hardware which includes clips and/or threaded fasteners which must be installed and tightened manually in order to attach the fans to the motor shafts. Disclosure of the Invention
  • the drive shaft includes a longitudinally extending section having a substantially D- shaped cross section for at least a portion of the length.
  • the D-shaped cross section defines a flat surface, which is provided with a depression formed thereon extending transversely to the shaft.
  • the fan has a rotational axis and a central mounting hub having an opening therethrough along the rotational axis.
  • the opening has a D-shaped cross section including a flat surface, which is configured to receive and engage the section of the drive shaft having a D-shaped cross section in a manner to allow the shaft to rotationally drive the fan.
  • the hub is provided with a deformable shaft engaging structure formed integrally therewith and configured to cooperate with the depression of the drive shaft to axially retain the fan with respect to the shaft when the deformable engaging structure is in an undeformed position. When the structure is deformed, it will allow axial movement of the fan with respect to the shaft to facilitate installation and removal of the fan.
  • Figure 1 is a perspective view of the indoor unit of an air conditioner which embodies the features of the present invention
  • Figure 2 is an exploded view of the fan motor and centrifugal fans of the air conditioning unit of Figure 1 ;
  • Figure 3 illustrates the fan motor and fans of Figure 2 assembled to one another
  • Figure 4 is a simplified partial sectional view of the assembly of Figure 3 illustrating the engagement of the fan motor shafts with the fans;
  • Figure 5 is an enlarged showing of the detail identified as Figure 5 in Figure 4;
  • Figure 6 is an enlarged showing of the detail identified as Figure 6 in Figure 4.
  • Figure 7 is an exploded perspective view of the air conditioning unit of Figure 1. Best Mode For Carrying Out The Invention And Industrial Applicability
  • the indoor unit 10 of a split system air conditioning system of the type incorporating a fan mounting according to the present invention includes a main structural support frame 12, which includes a bottom panel 14, a back panel 16 and a top section 18. Attached to the sides of the back and top panels are structural internal side covers 20. The side covers 20 and the back panel 16 cooperate to support a horizontally extending fan support panel 22, which includes a pair of rectangular openings 24 formed therein. Mounted above the fan support panel 22 on a pair of inclined surfaces 26, defined by the internal side covers 20 is a heat exchanger coil 25.
  • an upper condensate collection pan 28 Mounted under the top section of the main support frame 12 is an upper condensate collection pan 28. Mounted in the front of the unit, under the bottom of the heat exchanger 25, and supported by the front edge 30 of the fan support panel 22, is a lower condensate collection pan 32. A front section of the lower condensate collection pan extends upwardly and is spaced from the heat exchanger coil 25. Mounted to the lower surface of the fan support panel 22 is a fan assembly 34, which includes an electric motor 36 adapted to drive a pair of centrifugal fans 38, which are each enclosed in a two-piece scroll housing 40. Each of scroll housings 40 defines a rectangular upper air outlet opening 39, which is in air flow communication with the rectangular openings 24 in the fan support panel 22.
  • the electric motor 36 is a standard electrically actuated motor of the type used for air conditioning operation which has motor drive shaft sections extending from both ends of the motor. Both the left-hand drive shaft section 48 and the right-hand drive shaft section 50 are part of a continuous drive shaft and each includes a fan engaging conformation 52 and 54, respectively, formed thereon. It will be noted that a part of the conformations 52 and 54 are at different axial positions on the shafts 48 and 50. As will be seen, this allows the fan 38 and the fan shaft engaging structure of the fans to be identical regardless of whether the fan is mounted on the left or right-hand drive shaft.
  • the fans 38 are centrifugal fans having a central hub 58, which includes a circular radially outwardly extending divider section 60, which in turn supports two sets of longitudinally extending blades 62 and 64 extending from the outer periphery thereof 66 on the left and right-hand sides thereof, respectively.
  • Each fan 38 accordingly has a large circular inlet opening 68 and 70 at the right and left-hand sides thereof to thereby define the flow path through the fan through the two inlets and outwardly through the two sets of blades 62 and 64.
  • the left-hand motor shaft As best shown in Figures 2 and 4 - 6, the left-hand motor shaft
  • main shaft section 72 having a circular cross section and an axially extending flattened section 74 at the outer end thereof defining a substantially D-shaped cross section of the shaft in the region of the flat.
  • a transversely extending slot or recess 76 is formed across the flattened portion 74 in close proximity to the outer end of the left-hand shaft 48.
  • the right-hand motor shaft 50 also includes a main shaft section and a flat as described above in connection with the left-hand shaft. It will be noted however that the recess 76 in the right-hand shaft is formed at the axial inner end of the flat section 74 of the shaft.
  • the central hub 58 of the fans 38 defines a longitudinally extending cylindrical motor shaft receiving section 78, which has an axial opening 80 extending therethorugh having a D-shaped cross section defining a flat 82, which is configured to be received in a mating close tolerance fit with the D-shaped section of the motor shaft to which it is assembled.
  • the left-hand side of the cylindrical shaft receiving section 78 is provided with a pair of axially extending slots 84 therein on opposite sides of the flat 82.
  • the slots 84 isolate a longitudinally extending finger 86 of the cylindrical shaft receiving section 78.
  • the finger is affixed to the cylindrical section 78 at a first end 88 thereof and the outer free end is provided with a downwardly extending protrusion 92, which is configured to be received in and engage the transverse recesses 76 formed in the flat section 74 of the motor drive shafts.
  • the length of the slots 84 assure that the length of the finger 86 is such that it is able to flex radially outwardly when the shaft engages the outer flat 74 of the main shaft and to assure that it flexes inwardly to engage the protrusion 92 with the mating recess 76 when a fan is in the proper axial position with respect to a motor drive shaft.
  • the fan hub 58 is further provided with a structural extension 94, which is positioned in overlying spaced relationship with the finger 86 by a distance represented by reference numeral 96.
  • the distance 96 and the length of the structural extension 94 are determined so that the extension serves to limit the upward flexing of the finger 86 in order to prevent inadvertent breaking of the finger during installation or removal of a fan from a motor shaft.

Landscapes

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

Abstract

L'invention concerne la combinaison entre un arbre d'entraînement d'un moteur et un ventilateur (38) qui tourne entraîné par un arbre auquel il est axialement couplé. L'arbre d'entraînement comprend une section à prolongement longitudinal présentant une section transversale en forme de D s'étendant sur au moins une partie de la longueur. La section transversale en forme de D définit une surface plate (74) qui présente une dépression s'étendant transversalement à l'arbre. Le ventilateur (38) présente un axe de rotation et un moyeu de montage central (58) comprenant une ouverture le long de l'axe rotatif. L'ouverture présente une section transversale en forme de D comprenant une surface plate qui est configurée de manière à recevoir et à s'accoupler à la section de l'arbre d'entraînement présentant une section transversale en forme de D afin de permettre à l'arbre de faire tourner le ventilateur (38). Le moyeu (58) est doté d'un arbre déformable s'accouplant avec la structure monobloc et configuré pour coopérer avec la dépression (76) de l'arbre d'entraînement afin de retenir axialement le ventilateur par rapport à l'arbre lorsque la structure d'accouplement déformable est en position non déformée. Lorsque la structure est déformée, celle-ci permet le mouvement axial du ventilateur par rapport à l'arbre afin de faciliter l'installation et le retrait du ventilateur.
PCT/BR1998/000036 1998-06-22 1998-06-22 Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur WO1999067535A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/BR1998/000036 WO1999067535A1 (fr) 1998-06-22 1998-06-22 Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur
AU79009/98A AU7900998A (en) 1998-06-22 1998-06-22 Mounting of fan to motor drive shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR1998/000036 WO1999067535A1 (fr) 1998-06-22 1998-06-22 Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur

Publications (1)

Publication Number Publication Date
WO1999067535A1 true WO1999067535A1 (fr) 1999-12-29

Family

ID=4068981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1998/000036 WO1999067535A1 (fr) 1998-06-22 1998-06-22 Montage d'un ventilateur sur l'arbre d'entrainement d'un moteur

Country Status (2)

Country Link
AU (1) AU7900998A (fr)
WO (1) WO1999067535A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104425A1 (fr) * 2003-05-22 2004-12-02 Giordano Riello International Group S.P.A. Procede permettant de monter un ventilateur sur un moteur electrique et ensemble moteur-ventilateur obtenu au moyen de ce procede
EP1845266A3 (fr) * 2006-04-11 2007-12-05 Behr GmbH & Co. KG Roue porteuse, en particulier roue porteuse à deux flux et procédé de fabrication d'une telle roue porteuse
CN103883559A (zh) * 2014-03-14 2014-06-25 浙江理工大学 宽叶片短叶距一体式风机叶轮及其制造方法
US10156369B2 (en) 2015-05-12 2018-12-18 Alliance For Sustainable Energy, Llc Split heating and cooling systems
WO2022207012A1 (fr) * 2021-03-31 2022-10-06 青岛海尔空调器有限总公司 Structure de montage d'arbre de distribution, ventilateur à flux transversal et appareil de climatisation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264016A (en) * 1963-09-10 1966-08-02 Gen Electric Hub and shaft coupling
US5664936A (en) * 1994-09-21 1997-09-09 Multibras S/A/ Eletrodomesticos Fan mounting arrangement
EP0837244A1 (fr) * 1996-10-15 1998-04-22 RIELLO CONDIZIONATORI S.p.A. Dispositif de fixation d'un ventilateur sur un arbre d'entraínement dans systèmes de conditionnement d'air

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264016A (en) * 1963-09-10 1966-08-02 Gen Electric Hub and shaft coupling
US5664936A (en) * 1994-09-21 1997-09-09 Multibras S/A/ Eletrodomesticos Fan mounting arrangement
EP0837244A1 (fr) * 1996-10-15 1998-04-22 RIELLO CONDIZIONATORI S.p.A. Dispositif de fixation d'un ventilateur sur un arbre d'entraínement dans systèmes de conditionnement d'air

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004104425A1 (fr) * 2003-05-22 2004-12-02 Giordano Riello International Group S.P.A. Procede permettant de monter un ventilateur sur un moteur electrique et ensemble moteur-ventilateur obtenu au moyen de ce procede
CN100416107C (zh) * 2003-05-22 2008-09-03 焦尔达诺·列洛国际集团公开有限公司 将风扇装配到电动马达的方法及该方法获得的马达-风扇总成
EP1845266A3 (fr) * 2006-04-11 2007-12-05 Behr GmbH & Co. KG Roue porteuse, en particulier roue porteuse à deux flux et procédé de fabrication d'une telle roue porteuse
CN103883559A (zh) * 2014-03-14 2014-06-25 浙江理工大学 宽叶片短叶距一体式风机叶轮及其制造方法
US10156369B2 (en) 2015-05-12 2018-12-18 Alliance For Sustainable Energy, Llc Split heating and cooling systems
US10760795B2 (en) 2015-05-12 2020-09-01 Alliance For Sustainable Energy, Llc Split heating and cooling systems
WO2022207012A1 (fr) * 2021-03-31 2022-10-06 青岛海尔空调器有限总公司 Structure de montage d'arbre de distribution, ventilateur à flux transversal et appareil de climatisation

Also Published As

Publication number Publication date
AU7900998A (en) 2000-01-10

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