EP2778428A2 - Système de montage d'un ventilateur pour une hotte - Google Patents

Système de montage d'un ventilateur pour une hotte Download PDF

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Publication number
EP2778428A2
EP2778428A2 EP14157261.0A EP14157261A EP2778428A2 EP 2778428 A2 EP2778428 A2 EP 2778428A2 EP 14157261 A EP14157261 A EP 14157261A EP 2778428 A2 EP2778428 A2 EP 2778428A2
Authority
EP
European Patent Office
Prior art keywords
fan
shaft
shoulder
fan wheel
thread
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
EP14157261.0A
Other languages
German (de)
English (en)
Other versions
EP2778428A3 (fr
EP2778428B1 (fr
Inventor
Robert Blaz
Ilhan GÜCLÜ
Eugen Maurer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL14157261T priority Critical patent/PL2778428T3/pl
Publication of EP2778428A2 publication Critical patent/EP2778428A2/fr
Publication of EP2778428A3 publication Critical patent/EP2778428A3/fr
Application granted granted Critical
Publication of EP2778428B1 publication Critical patent/EP2778428B1/fr
Active legal-status Critical Current
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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid 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
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • 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
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis

Definitions

  • the present invention relates to a connection arrangement for a radial fan of an extractor hood.
  • the radial fan comprises a fan wheel and a fan motor, which drives the fan wheel during operation of the radial fan.
  • the fan motor is disposed inside the fan and drives the fan via a Ronde, which is connected to the rotor of the fan motor.
  • An object of the present invention is to provide a connection arrangement for a radial fan of an extractor hood, which is characterized in particular by a cost-effective and compact design.
  • connection arrangement for a radial fan of an extractor hood with a fan and a shaft is proposed.
  • the shaft is designed to drive the fan wheel.
  • the shaft has a thread and a subsequent to the thread shoulder.
  • the thread is screwed into a corresponding thread of the fan.
  • the shoulder engages in a corresponding shoulder of the fan. Radial portions of the shoulder and the corresponding shoulder axially abut each other.
  • the shaft can be provided with a smaller maximum diameter.
  • the reason for this is to be seen in that a centering of the fan with respect to the axis of rotation of the shaft can also take place by means of the shoulders and no separate centering between the thread and the shoulder of the shaft is needed.
  • the smaller maximum shaft diameter allows the use of smaller bearings, in particular ball bearings, for supporting the shaft or the rotor. As a result, the corresponding fan motor builds smaller, and it can save costs.
  • the radial blower may in particular be a double-flow radial blower.
  • the fan may be composed of axially disposed blades which are held together at their respective ends by two concentric rings. Furthermore, the fan may have a bell, which rotatably connects the blades with the shaft or a socket.
  • the shoulder and the corresponding shoulder are preferably each rotationally symmetrical with respect to the axis of rotation.
  • the radial sections are preferably directly against each other, that is, no other component or no air gap is arranged between them.
  • Ring refers to the axis of rotation of the shaft.
  • radial and axial also includes deviations from the radial or axial by up to 5 °.
  • the radial sections come into contact with each other when the corresponding thread of the fan is completely screwed onto the thread of the shaft. By further rotation, the radial portions are then frictionally clamped against each other, so that an automatic release of the fan wheel is prevented by the shaft.
  • the direction of rotation for screwing the fan wheel on the shaft can be provided opposite to the direction of rotation of the fan during operation of the radial fan. This ensures that the connection between fan and shaft continues to tighten during operation of the radial fan and does not dissolve.
  • the axial portions of the shoulder and the corresponding shoulder radially bear against one another.
  • a centering of the fan with respect to the axis of rotation of the shaft can be accomplished by means of the shoulders.
  • an additional support of the fan on the shaft is created.
  • the fan wheel on a socket which comprises the corresponding thread and the corresponding shoulder. At the junction between fan and shaft high forces can occur, so that it may be beneficial to initiate these by means of a socket in the fan.
  • the bushing is formed of a different material than a bell receiving the bushing of the fan wheel.
  • the socket may for example be formed of a more stable material than the bell so as to be able to transmit the forces from the shaft to the fan.
  • the socket is positively, positively and / or materially connected to the bell.
  • the sleeve may be frictionally held in an opening of the bell.
  • the bush can be encapsulated with the material of the bell, for example in a plastic injection molding process, whereby a cohesive connection between the bell and the socket is made.
  • a latching connection between the socket and the bell is provided.
  • one or more receiving elements can be arranged on a lateral surface of the bush, which are elastically positively connected with one or more engagement elements of the bell.
  • the bush can be designed in the form of a cylinder with an annular base.
  • the corresponding shoulder has a centering diameter, which centers the fan wheel with respect to an axis of rotation of the shaft.
  • the corresponding shoulder has a double function: On the one hand, it ensures a frictional connection and thus for a mounting of the fan wheel on the shaft. On the other hand, it centers the fan wheel with respect to a rotation axis of the shaft. This results in a compact design.
  • the corresponding shoulder of the fan wheel has an insertion bevel for insertion of the shoulder of the shaft into the corresponding shoulder. This results in a simple installation.
  • the shaft between the thread and the shoulder has an annular groove. This allows the shoulder to be easily made.
  • the shaft has at its one end an assembly aid for screwing the thread of the shaft into the corresponding thread of the fan wheel. This simplifies assembly of the connection arrangement.
  • the mounting aid is formed in the form of a shaft section which has a smaller diameter than the thread.
  • an extractor hood is provided with a radial fan.
  • the radial fan has a fan and a fan motor. Furthermore, the radial fan comprises the connection arrangement described above, which rotatably connects a shaft of the fan motor with the fan.
  • the shaft is part of a rotor of the fan motor.
  • the shaft can be mounted in two spaced-apart bearings, in particular ball bearings, to one side of the fan.
  • the rotor is designed as an internal rotor. Accordingly, the stator is provided so as to include the rotor. Further, the stator is rotatably provided with respect to a motor suspension of the fan motor.
  • the radial fan is designed as a double-flow radial fan. This includes opposing axial air inlets as well as a tangential air outlet. The fan delivers the air from the air inlets to the air outlet and pressurizes it with a pressure difference.
  • FIG. 1 shows a detail of an extractor hood 1 with a double-flow radial fan 2
  • Fig. 2 shows a section LL Fig. 1 ,
  • the radial fan 2 comprises a spiral-shaped housing 3, which is composed of two mutually connected housing halves 4, 5.
  • a respective housing half 4, 5 has an axial air inlet 6, 9.
  • "Axial” and “radial” refers in the present case to an axis of rotation 8 of a fan motor 7 arranged inside the housing 3, which drives a fan wheel 11.
  • connection assembly 10 connects the fan motor 7 with the fan 11 for driving the same during operation of the radial fan second
  • the fan motor 7 is held by means of a motor mount 12, in particular by means of its bearing plate, on the housing half 5, in such a way that it is arranged in the interior of the fan 11.
  • the fan motor 7 comprises a stator 14 fixed relative to the motor suspension 12 and a rotor 15 formed as an internal rotor.
  • the rotor 15 comprises a shaft 18 with the axis of rotation 8.
  • the fan 11 includes blades 13 which extend axially.
  • the fan 11 further includes a bell 16, which connects the blades 13 with each other and with a socket 17, as will be described in more detail below with reference to FIG FIG. 3 explained.
  • the bell 16 may divide the blades 13 axially such that there are two separate regions each associated with an air outlet 6 from which the air is conveyed to a tangential air outlet 21 in the housing 3, as in FIG Fig. 2 to recognize.
  • the shaft 18 of the rotor 15 is cantilevered, that is, two ball bearings 19 carry the shaft 18 to one side of the fan 11 and the bell 16, and the shaft 18 carries the fan 11 at its free end.
  • FIG. 3 shows an enlarged view M from FIG. 2 .
  • the shaft 18 comprises at its extreme end an assembly aid 22 in the form of a stub shaft, which has a smaller diameter 20 than a subsequent to the stub shaft 22 thread 23 of the shaft 18.
  • the thread 23 is followed by an annular groove 24.
  • a shoulder 25 which comprises a radial portion 26 and an axial portion 27.
  • the bushing 17 is positively connected via a latching connection 31 in the direction of rotation and in the axial direction with the bell 16.
  • the bush 17 is in the form of a cylinder with an annular base 32.
  • a shoulder 33 corresponding to the shoulder 33 is formed in the cylinder or the bushing 17.
  • the corresponding shoulder 33 is composed of a radial section 34 and an axial section 35.
  • the bush 17 is further formed with an insertion bevel 36 to the shoulder 33 out.
  • the bush 17 further comprises a thread 37 corresponding to the thread 37, which adjoins the shoulder 33.
  • the truncated cone 22 When mounting the fan wheel 11 on the shaft 18, the truncated cone 22 is first inserted from one side into the thread 37. The fact that the truncated cone 22 has a comparatively small diameter 20, this succeeds without problems.
  • the insertion bevel 36 helps the shoulder 25 to slip into the corresponding shoulder 33. Thereafter, by turning the fan 11 against its direction of rotation during operation of the radial fan 2, the thread 37 of the bushing 17 engages with the thread 23 and is screwed onto this. At a certain point in time, the radial sections 26, 34 of the shoulders 25, 33 come into contact with each other. Further tightening ensures a frictional connection between the radial sections 26, 34. In addition, a defined position of the fan wheel 11 in the axial direction with respect to the shaft 18 is thus achieved. Furthermore, the shoulder 25 is formed with a centering diameter, so that the abutment of the axial sections 27, 35 of the shoulders 25, 33 ensures centering of the fan wheel 11 with respect to the axis of rotation 8

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP14157261.0A 2013-03-11 2014-02-28 Système de montage d' un ventilateur pour une hotte Active EP2778428B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14157261T PL2778428T3 (pl) 2013-03-11 2014-02-28 Układ połączeniowy do wentylatora radialnego okapu kuchennego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013204140.3A DE102013204140A1 (de) 2013-03-11 2013-03-11 Verbindungsanordnung für ein Radialgebläse einer Dunstabzugshaube

Publications (3)

Publication Number Publication Date
EP2778428A2 true EP2778428A2 (fr) 2014-09-17
EP2778428A3 EP2778428A3 (fr) 2018-04-04
EP2778428B1 EP2778428B1 (fr) 2020-08-26

Family

ID=50189567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14157261.0A Active EP2778428B1 (fr) 2013-03-11 2014-02-28 Système de montage d' un ventilateur pour une hotte

Country Status (4)

Country Link
EP (1) EP2778428B1 (fr)
CN (1) CN104047887A (fr)
DE (1) DE102013204140A1 (fr)
PL (1) PL2778428T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3228875A1 (fr) * 2016-04-07 2017-10-11 Faber S.p.A. Ventilateur amélioré pour système d'extraction de fumée et de vapeur, en particulier pour les cuisines et système d'extraction incorporant un tel ventilateur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015108489B3 (de) * 2015-05-29 2016-09-29 Halla Visteon Climate Control Corporation Zentrifugalgebläseeinheit, insbesondere für Kraftfahrzeugklimaanlagen
CN106813282B (zh) * 2017-04-10 2023-03-28 华帝股份有限公司 一种油烟机的自动清洗装置及其清洗油烟方法
CN115788944B (zh) * 2023-01-16 2023-04-18 中国电建集团透平科技有限公司 一种大型风洞风机驱动轴系结构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9016767U1 (de) 1990-12-12 1991-02-28 Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen Dunstabzugshaube

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269799A (en) * 1939-09-23 1942-01-13 Torrington Mfg Co Fan hub and shaft assembly
GB983101A (en) * 1961-03-13 1965-02-10 Firth Cleveland Ltd Improvements relating to cross-flow fans
JPS5136602A (ja) * 1974-09-24 1976-03-27 Hitachi Ltd Goseijushiseihaneguruma
FR2324203A7 (fr) * 1975-09-15 1977-04-08 Sisme Italiana Statori Motori Pompe centrifuge a rotor pourvu d'un manchon d'accouplement au moteur
JPS5289703U (fr) * 1975-12-27 1977-07-05
US4832573A (en) * 1987-11-27 1989-05-23 General Motors Corporation Integral connection for plastic water pump impeller
CN2136952Y (zh) * 1992-07-28 1993-06-23 蔡琼瑶 一种新型排油烟机
DE19640647A1 (de) * 1996-10-02 1998-04-09 Asea Brown Boveri Verdichterradanordnung für Turbolader
WO2000057064A1 (fr) * 1999-03-23 2000-09-28 Türk Elektri̇k Endüstri̇si̇ A.Ş. Ventilateur a isolation
JP2010242526A (ja) * 2009-04-01 2010-10-28 Tokai Rubber Ind Ltd ファンボス

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9016767U1 (de) 1990-12-12 1991-02-28 Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen Dunstabzugshaube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3228875A1 (fr) * 2016-04-07 2017-10-11 Faber S.p.A. Ventilateur amélioré pour système d'extraction de fumée et de vapeur, en particulier pour les cuisines et système d'extraction incorporant un tel ventilateur
CN107269591A (zh) * 2016-04-07 2017-10-20 费博股份有限公司 特别是用于厨房的烟和蒸汽抽吸系统的改进的风扇和结合有该风扇的抽吸系统
US10458661B2 (en) 2016-04-07 2019-10-29 Faber S.P.A. Fan for smoke and vapor extraction system, in particular for kitchens and extraction system incorporating such a fan

Also Published As

Publication number Publication date
CN104047887A (zh) 2014-09-17
PL2778428T3 (pl) 2021-04-06
EP2778428A3 (fr) 2018-04-04
EP2778428B1 (fr) 2020-08-26
DE102013204140A1 (de) 2014-09-11

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