EP2960523A1 - Befestigungsring für rad einer turbine einer luftaufbereitungseinheit, und luftaufbereitungseinheit, die ein solches befestigungselement umfasst - Google Patents

Befestigungsring für rad einer turbine einer luftaufbereitungseinheit, und luftaufbereitungseinheit, die ein solches befestigungselement umfasst Download PDF

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Publication number
EP2960523A1
EP2960523A1 EP15173042.1A EP15173042A EP2960523A1 EP 2960523 A1 EP2960523 A1 EP 2960523A1 EP 15173042 A EP15173042 A EP 15173042A EP 2960523 A1 EP2960523 A1 EP 2960523A1
Authority
EP
European Patent Office
Prior art keywords
fastening element
shaft
turbine wheel
rotation
axis
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.)
Granted
Application number
EP15173042.1A
Other languages
English (en)
French (fr)
Other versions
EP2960523B1 (de
Inventor
Baptiste Excoffon
Jérôme Chamey
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.)
Carrier Corp
Original Assignee
Compagnie Industrielle dApplications Thermiques SA CIAT
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Publication date
Application filed by Compagnie Industrielle dApplications Thermiques SA CIAT filed Critical Compagnie Industrielle dApplications Thermiques SA CIAT
Publication of EP2960523A1 publication Critical patent/EP2960523A1/de
Application granted granted Critical
Publication of EP2960523B1 publication Critical patent/EP2960523B1/de
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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
    • 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
    • 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

Definitions

  • the present invention relates to a fastener ring for an air handling unit turbine wheel, and an air handling unit comprising such a fastener.
  • the invention relates more particularly to the field of comfort units, which are air treatment units composed of a filter, a motor-fan unit and a heat exchanger. These elements are assembled and integrated into a frame, possibly equipped with a casing body.
  • comfort units are usually mounted in a lighter or integrated totally or partially into false ceilings or false floors.
  • the comfort units are mainly used to filter the air and thus guarantee the quality, and to temper the room or the volume considered by performing a heat exchange between the air to be treated and a fluid, often water or water. brine.
  • the fluid can be hot, it is then used to warm the room, or cold to cool it.
  • Air acts as a primary fluid and provides comfort, quality and temperature. It is conveyed in the comfort unit, by means of the motor-fan unit which is generally composed of a motor and a cradle, of one or more turbines, for example a centrifugal turbine, and metal components such as a platform, one or more scrolls and volute envelopes.
  • the motor-fan unit which is generally composed of a motor and a cradle, of one or more turbines, for example a centrifugal turbine, and metal components such as a platform, one or more scrolls and volute envelopes.
  • the air is sucked into the inlet side vents of the fan and is output at the desired speed and pressure conditions.
  • the wheel of the turbine is placed on one or two motor shafts and a fastener is used to make the wheel integral with the motor shafts.
  • This fixing element sometimes called hub, collar, or ring, has the primary function of immobilizing the wheel in rotation and in translation relative to the motor shaft, so that the wheel retains its initial position all along the lifetime of the comfort unit.
  • the fixing rings sometimes generate an unbalance which imbalances the dynamic operation of the comfort unit and accelerates the breakage of the fastener.
  • DE-A-197 08 767 discloses a hub for mounting a propeller on a motor, the hub comprising an outer cylindrical body and an inner cylindrical body, between which is deposited an elastic layer.
  • external ribs are provided on the outside of the inner cylindrical body, as are internal ribs on the inside of the outer cylindrical body. Given their respective diameters, these ribs are not taken with each other.
  • the elastic nature of the intermediate layer prevents rotation locking of the inner and outer cylindrical body relative to each other.
  • the fixing element is traversed by a passage provided to cooperate with the drive shaft, the passage and the shaft being each provided with a flat for locking in rotation of the fastener relative to the shaft.
  • the fixing element comprises rotational locking ribs of the fastening element with respect to the turbine wheel, the ribs being provided to cooperate with slots of the turbine wheel.
  • the fastening element comprises a screw cap, designed to cooperate with a set screw for locking in translation of the fastening element relative to the motor shaft.
  • the flat part of the fixing element ensures a locking of the rotation relative to the motor shaft.
  • the ribs make it possible to block the rotation of the fastening element with respect to the turbine wheel.
  • a pressure screw is received in the screw barrel, it ensures the locking in translation of the fastening element relative to the motor shaft.
  • the fixing element may be made of a light material, in particular a plastic material.
  • the fastening element has no unbalance, it does not generate vibrations caused by the effects of inertia.
  • the holding of the assembly carried out by the fixing element is improved with respect to the fixing elements of the prior art.
  • the figure 1 shows an air treatment unit or comfort unit 1, which comprises an electric motor 2 fixed on a platform 3 and rotating an output shaft 4 on which is fixed a turbine wheel 5 disposed in an envelope 6 provided with openings for the passage of air.
  • the turbine wheel 5 is of generally cylindrical shape with a circular base and comprises inner blades 51 extending in length along an axis of rotation X of the shaft 4 which is a common axis for the motor 2, the wheel turbine 5 and a ring 7 for fixing the turbine wheel 5 on the shaft 4.
  • a wall 52 perpendicular to the X axis extends inside the turbine wheel 5. Along the X axis, the wall 52 is disposed at a central zone of the turbine wheel 5. A bushing 53 centered on the X axis extends through the wall 52.
  • Each longitudinal end of the sleeve 53 has a plurality of slots 54, for example six slots parallel to the X axis and opening at this longitudinal end.
  • the two faces of the wall 52 are provided with a plurality of reinforcing ribs 55, for example six ribs, each extending in length in a radial direction relative to the axis X.
  • the ribs 55 are adjacent to the sleeve 53 and are angularly spaced uniformly about the X axis.
  • the ribs 55 are angularly aligned about the X axis with the slots 54.
  • the shaft 4 has a flat portion 41 extending parallel to the axis X.
  • the ring 7 immobilizes in rotation and in translation of the wheel 5 relative to the shaft 4.
  • the ring 7 comprises two parts 7A and 7B of generally cylindrical shape and circular base.
  • Part 7A is intended to be mounted on the side of the wall 52 of the turbine wheel 5.
  • the ring 7 is traversed by a central and longitudinal passage 71 centered on the axis X, for the passage of the shaft 4.
  • the diameter of the passage 71 is greater than the diameter of the passage 71 in Part 7B.
  • an inner shoulder 72 of annular shape, perpendicular to the axis X, extends between the parts 7A and 7B. The shoulder 72 abuts against one end of the sleeve 54 of the turbine wheel 5.
  • the cylindrical wall of the ring 7 which defines the passage 71 comprises a plurality of ribs 73 parallel to the axis X and distributed angularly in a regular manner about the axis X.
  • the number of ribs 73 is equal to the number of slots 54 of the turbine wheel 5.
  • the ribs 73 are arranged in the slots 54 so as to achieve rotational locking of the ring 7 relative to the shaft 4, in the manner of splines.
  • the cylindrical wall of the ring 7 which delimits the passage 71 has a flat 74 parallel to the axis X which cooperates with the flat portion 41 of the shaft 4, so as to realize a blockage of the rotation of the ring 7 relative to the shaft 4.
  • the outer wall of the portion 7B of the ring 7 comprises a plurality of lugs 75 for locating the angular position of the ring 7, for example three lugs, angularly spaced regularly around the axis X.
  • the lugs 75 constitute a visual cue for the blind mounting of the ring 7.
  • the portion 7A of the ring 7 comprises a screw thread 76 extending radially.
  • the screw thread 76 is pierced with a threaded hole designed to receive a pressure screw passing through one of the slots 54.
  • the pressure screw is not shown and allows the clamping of the ring 7 on the flat part. 41 of the shaft 4, so as to block the translation, along the axis X, of the ring 7 relative to the shaft 4.
  • the ring 7 thus blocks the translation of the turbine wheel 5, along the axis X, with respect to the shaft 4.
  • the screw bit 76 has reinforcing ribs 76.1, 76.2, 76.3 and 76.4.
  • the ribs 76.1 and 76.2 extend perpendicularly to the X axis, while the ribs 76.3 and 76.4 extend perpendicularly to the ribs 76.1 and 76.2, in a plane which passes through the X axis and the axis of the screw 76.
  • the ribs 76.1 to 76.4 make it possible to reinforce the mechanical strength of the screw thread 76 and the ring 7 when tightening the pressure screw.
  • a protrusion 77 diametrically opposed to the screw thread 76 extends from the outer wall of the portion 7A of the ring 7.
  • the protrusion 77 comprises a wall 77.1 coplanar with the ribs 76.3 and 76.4, and a wall 77.2 perpendicular to the axis X.
  • the protrusion 77 also provides a mechanical reinforcement of the ring 7.
  • Protrusions or protuberances 78 parallel to the axis X are present on the outer wall of the portion 7A of the ring 7.
  • the protuberances 77 and 78 are distributed angularly in a regular manner about the axis X.
  • the protuberances 78 and the protrusion 77 realize a balancing of the inertia of the ring 7, so as to avoid unbalance effects which are detrimental to the life of the ring 7.
  • the ring 7 is made of plastic material, preferably a material comprising a thermoplastic polymer, such as a polyester.
  • the thermoplastic polymer optionally further comprises fibers such as fibers reinforced flame retardants, especially glass fibers.
  • a polyester is polybutylene terephthalate, such as PBT GF 30 (Trade Mark) which is reinforced with glass fibers. This material is relatively light, which is advantageous.
  • the ring 7 is adapted for fixing a turbine wheel 5 made of plastic or composite material. It can be used for various types of comfort units, which reduces manufacturing costs.
  • the ring 7 makes it possible to obtain satisfactory aeraulic, acoustic and mechanical performances, by ensuring a balancing of the masses with a view to reducing the vibrations of the rotating elements.
EP15173042.1A 2014-06-23 2015-06-22 Befestigungsring für rad einer turbine einer luftaufbereitungseinheit, und luftaufbereitungseinheit, die ein solches befestigungselement umfasst Active EP2960523B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1455796A FR3022579B1 (fr) 2014-06-23 2014-06-23 Bague de fixation pour roue de turbine d'unite de traitement d'air et unite de traitement d'air comprenant un tel element de fixation

Publications (2)

Publication Number Publication Date
EP2960523A1 true EP2960523A1 (de) 2015-12-30
EP2960523B1 EP2960523B1 (de) 2019-12-11

Family

ID=51519020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15173042.1A Active EP2960523B1 (de) 2014-06-23 2015-06-22 Befestigungsring für rad einer turbine einer luftaufbereitungseinheit, und luftaufbereitungseinheit, die ein solches befestigungselement umfasst

Country Status (3)

Country Link
EP (1) EP2960523B1 (de)
FR (1) FR3022579B1 (de)
RU (1) RU2693498C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017154764A1 (ja) * 2016-03-08 2017-09-14 株式会社ヴァレオジャパン 送風機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900202A (en) * 1957-07-12 1959-08-18 Meier Electric And Machine Com Propeller hub assembly
US3240517A (en) * 1963-03-12 1966-03-15 Torrington Mfg Co Fan hub
US4009970A (en) * 1975-01-15 1977-03-01 Forth Jr Claude A Resilient fan hub
DE19708767A1 (de) 1996-03-04 1997-11-06 Bridgestone Corp Erschütterungsfeste Nabe
FR2837538A1 (fr) * 2002-03-19 2003-09-26 Denso Corp Soufflante d'air avec un ventilateur ne pouvant pas entrer en contact avec la carcasse du moteur
US20090196685A1 (en) * 2008-01-31 2009-08-06 Trane International, Inc. Alignment Feature for Hub and Driveshaft Assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900202A (en) * 1957-07-12 1959-08-18 Meier Electric And Machine Com Propeller hub assembly
US3240517A (en) * 1963-03-12 1966-03-15 Torrington Mfg Co Fan hub
US4009970A (en) * 1975-01-15 1977-03-01 Forth Jr Claude A Resilient fan hub
DE19708767A1 (de) 1996-03-04 1997-11-06 Bridgestone Corp Erschütterungsfeste Nabe
FR2837538A1 (fr) * 2002-03-19 2003-09-26 Denso Corp Soufflante d'air avec un ventilateur ne pouvant pas entrer en contact avec la carcasse du moteur
US20090196685A1 (en) * 2008-01-31 2009-08-06 Trane International, Inc. Alignment Feature for Hub and Driveshaft Assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017154764A1 (ja) * 2016-03-08 2017-09-14 株式会社ヴァレオジャパン 送風機

Also Published As

Publication number Publication date
FR3022579B1 (fr) 2018-11-30
FR3022579A1 (fr) 2015-12-25
RU2015124164A3 (de) 2018-11-29
RU2015124164A (ru) 2017-01-10
EP2960523B1 (de) 2019-12-11
RU2693498C2 (ru) 2019-07-03

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