EP1754892B1 - Ventilateur - Google Patents

Ventilateur Download PDF

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Publication number
EP1754892B1
EP1754892B1 EP06010905A EP06010905A EP1754892B1 EP 1754892 B1 EP1754892 B1 EP 1754892B1 EP 06010905 A EP06010905 A EP 06010905A EP 06010905 A EP06010905 A EP 06010905A EP 1754892 B1 EP1754892 B1 EP 1754892B1
Authority
EP
European Patent Office
Prior art keywords
fan
electrical line
deflection
fan according
housing
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.)
Active
Application number
EP06010905A
Other languages
German (de)
English (en)
Other versions
EP1754892A1 (fr
Inventor
Armin Fleig
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.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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 Ebm Papst St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP1754892A1 publication Critical patent/EP1754892A1/fr
Application granted granted Critical
Publication of EP1754892B1 publication Critical patent/EP1754892B1/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
    • 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
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • 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
    • F04D25/0693—Details or arrangements of the wiring
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips

Definitions

  • the invention relates to a fan, in particular a device fan, with a fan housing and a motor for driving fan blades, which are rotatably disposed in an air passage opening provided in the fan, and with an electrical connection, which from the motor to a housing part and from the housing part to the outside leads and has at least one electrical line, which usually has the form of a strand.
  • the WO 2004/046 557 shows a fan housing with a radial extension, in which a recess is provided, to which an electrical lead from a motor, which is arranged in the fan housing.
  • a latchable retaining member In this recess a latchable retaining member is inserted and locked there. In the latched state, it deflects the electrical line at two points by a predetermined minimum angle and thereby causes a strain relief on the side of the electrical line leading to the motor.
  • this holding member is achieved that a flexible line before mounting the support member in a simple manner can be inserted into recesses provided for this, so does not need to be threaded, and that the line is deflected only by the insertion of the support member.
  • Such a fixed line can thereby from the Strain relief can be removed, that either the holding member removed again, or that the flexible line, if it is not provided with a connector, ausfädelt over its entire length from the deflections.
  • this object is achieved by the subject matter of claim 1.
  • a continuous flexible conduit can be hooked in a simple and convenient way, the conduit being held in the strain relief device and a secure Strain relief is achieved.
  • a so fixed line can be removed only after they are hooked out of the strain relief, that they hang over their entire length from the deflections, or they threaded out.
  • Fig. 1 shows a three-dimensional view of a device fan 20, which is shown here as an axial fan.
  • the invention is not limited to axial fans. Rather, it can be used in the same way with other types of fans, for example in diagonal and radial fans.
  • the fan 20 has a fan housing 22, which has approximately the shape of a circular cylindrical tube 24, at whose in Fig. 1 lower end a mounting flange 26 and at its upper end a mounting flange 28 are provided.
  • the flow direction 25 of the air is defined by an inflow side and an outflow side.
  • Fig. 1 shows at the top the 34 designated outflow side.
  • the fan 20 has a motor 21 for driving fan blades 40 (FIG. Fig. 3 ), which are arranged rotatably in an air passage opening 41 about a rotation axis 23.
  • the wings 40 rotate in operation in the direction of an arrow 27.
  • the shape of the fan blades 40 is adapted to the shape of the inside of the tube 24.
  • the motor 21 is preferably an electronically commutated external rotor motor in which the vanes 40 are mounted on the outer rotor.
  • a mounting flange 44 For mounting the motor 21 in the fan housing 22 is a mounting flange 44, which is connected via webs 46 with the fan housing 22.
  • the webs 46 are preferably formed integrally with the mounting flange 44 and the housing 22.
  • the flange 44 is a bearing tube 48, on which the motor 21 is fixed in a known manner.
  • a flexible electrical connection line 52 of the motor 21 which is e.g. can be designed as a multi-wire line. It is soldered to a (not shown) printed circuit board of the motor 21 and is led from there to the outside to the fan housing 22, wherein a strain relief device 50 is provided for the line 52, as will be described below.
  • the conduit 52 usually includes a plurality of flexible insulated wires, preferably so-called strands, each of which is composed of a plurality of thin wires which are enveloped by an insulating material.
  • a fan requires two thick wires to supply an operating voltage. In many cases, thinner lines are provided, eg for a tachometer or an alarm signal. All of these flexible cables must be in the Mounting quickly and above all securely fastened, and this is described below.
  • the fan housing 22 As seen in the direction of the axis of rotation 23, an approximately square outline with four corners 64, at which recesses 62 are provided for mounting the fan 20.
  • the strain relief device 50 In the area of in Fig. 1 Front corner 64 is the strain relief device 50. This can be arranged at any point of the fan housing 22, but the corners 64 are particularly suitable for this purpose.
  • the device 50 is preferably formed integrally with the fan housing 22 and serves to cause a strain relief for the leading to the motor 21 side of the line 52 by deflecting the line 52 at least two deflection points and in at least two planes running at a predetermined angle to each other. Details of the strain relief device 50 are particularly in the Fig. 2 . 4 and 5 presented in great detail, so that a description with words would be dispensable for the expert.
  • Fig. 1 and Fig. 2 show how the conduit 52 exits the recess 49 of the mounting flange 44 and is guided in a web 51 which is disposed between the motor 21 and the fan housing 22 and provided with a guide groove 53, in which the conduit 52 from the region of the motor 21 is guided to an adjacent to the region of the extension 64 lateral boundary surface 29 of the fan housing 22.
  • a first hold-down device 54 In order to prevent the line 52 from sliding out of the guide channel 53, it is prevented from sliding out there by a first hold-down device 54. This extends only so far that it still allows a lateral insertion of the line 52 into the channel 53, which accelerates the assembly accordingly.
  • the channel 53 continues in the region of the corner 64 in a channel 56 (FIG. Fig. 2 ), which generally extends approximately in the radial direction and is shown radially open to the outside, which facilitates the attachment of the strands 52.
  • a second hold-down 57 extending in Fig. 2 comes from the left, and a third hold 58, the in Fig. 2 coming from the right.
  • the hold-downs 57, 58 form between them a narrow gap 59, through which the strands 52 can be inserted.
  • the gap 59 extends at an angle to the channel 56, as shown Fig. 2 clear seen. In this way it is achieved that the line 52 can not free itself from the channel 56.
  • the hold-downs 57 and 58 overlap in their effect.
  • a relatively sharp deflection edge 55 which may have, for example, a radius of 0.5 mm and the line 52 according to Fig. 4 is deflected in the opposite direction. This deflection takes place approximately in a plane which is perpendicular to the axis of rotation 23, as the Fig. 2 . 4 and 5 clearly show.
  • the deflection angle is according to Fig. 4 more than 120 ° and preferably about 180 °. Naturally, this angle can be varied within wide limits.
  • the channel 56 has, at its radially outer end, a sloping wall 63, as shown in FIG Fig. 2 goes down into a stiffening wall 70.
  • a stiffening wall 72 Parallel to the wall 70 and at a distance from it extends a stiffening wall 72, which merges upward over an inclined wall 74 in the upper flange 28.
  • the stiffening walls 70, 72 extend between the flanges 26 and 28.
  • the inclined walls 63, 74 (and corresponding oblique walls on the lower flange 26) direct the force from a (not shown) fixing screw directly from the screw during assembly of the fan. Support surface 76 in the ribs 70, 72 and thereby allow a doubling of the tightening torque of the screw in question and thus a particularly secure attachment of such a fan 20th
  • the conduit 52 extends there from the upper flange 28 through an opening 84 thereof to an opening 86 (FIG. Fig. 2 ) of the lower flange 26.
  • the line 52 extends over a projecting, relatively sharp-edged rib 88, which extends from the stiffening wall 70 to the outer periphery of the portion 24, and which extends approximately perpendicular to the axis of rotation 23.
  • the rib 88 causes a slight deflection of the line 52. The reason is the following: If according to Fig. 2 a force F1 is exerted on the line 52, this would in itself cause a movement of the line 52 in the direction of the force arrow F2 in the region of the channel 53. By the rib 88, the force F2 is reduced, and the two hold-downs 57 and 58 prevent the line 52 from jumping out of the groove 53 and the groove 56 due to the force F2.
  • the opening 84 is, as in Fig. 4 represented, accessible via an arcuate suspension opening 90 (in the flange 28) from the outside, so that through this opening 90, the strands 52 can be hooked, but can not hang themselves again. This is supported by the rib 88.
  • the opening 86 ( Fig. 2 ) in the lower flange 26 is accessible via an approximately spiral-shaped channel 92 from the outside, so that the strands 52 can be hung easily through this channel 92, but accidental unhooking of the strands, so called self-liberation, is prevented by the rib 88.

Landscapes

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

Claims (10)

  1. Ventilateur, en particulier ventilateur d'appareil, qui présente :
    - un élément formant boîtier (22), qui délimite vers l'extérieur une ouverture de passage d'air (41) prévue dans le ventilateur (20) ;
    - un moteur (21), pour entraîner des ailettes de ventilateur (40) qui sont disposées à rotation autour d'un axe de rotation (23) dans l'ouverture de passage d'air (41) ;
    - un élément porteur (51), qui est prévu entre le moteur (21) et l'élément formant boîtier (22) et qui s'étend transversalement à l'ouverture de passage d'air (41) et est réalisé à la manière d'un conduit (53) ;
    - un câble électrique (52), qui est disposé dans ce conduit (53) et qui est dirigé par celui-ci depuis le moteur (21) vers un point prédéfini (64) de l'élément formant boîtier (22) et vers un dispositif de déviation (50) prévu en ce point, le dispositif de déviation (50) servant, en déviant le câble électrique (52) en un premier point de déviation (55) et en un deuxième point de déviation (84) et dans au moins deux plans s'étendant sous un angle prédéfini l'un par rapport à l'autre, à produire un soulagement de traction pour le côté du câble électrique (52) qui mène au moteur (21), l'autre côté du câble (52) menant hors de l'élément formant boîtier (22) vers l'extérieur et servant au raccordement électrique du ventilateur.
  2. Ventilateur selon la revendication 1, dans lequel le premier point de déviation (55) est conçu pour dévier le câble électrique (52) dans un premier plan essentiellement perpendiculaire à l'axe de rotation précité (23),
    et le deuxième point de déviation (84) est conçu pour dévier le câble électrique (52) depuis le premier plan dans un deuxième plan qui s'étend sous un angle par rapport au premier plan.
  3. Ventilateur selon la revendication 2, dans lequel le premier point de déviation (55) est conçu pour dévier le câble électrique (52) approximativement en direction opposée.
  4. Ventilateur selon l'une des revendications précédentes, dans lequel l'élément porteur (51) présente un serre-flan (54) qui est conçu pour s'opposer à un mouvement selon lequel le câble électrique (52) sort du conduit (53) prévu dans l'élément porteur (51).
  5. Ventilateur selon l'une des revendications précédentes, dans lequel le dispositif de soulagement de traction (50) présente un premier dispositif d'accrochage (84), qui est réalisé sur une première partie de boîtier (28) essentiellement perpendiculaire à l'axe de rotation précité (23) et qui présente un premier conduit d'introduction (88), qui se termine dans un premier évidement (84) et qui est conçu pour introduire le câble électrique (52) dans cet évidement (84).
  6. Ventilateur selon la revendication 5, dans lequel le dispositif de soulagement de traction (50) présente un deuxième dispositif d'accrochage (86), qui est réalisé sur une deuxième partie de boîtier (26) s'étendant essentiellement parallèlement à la première partie de boîtier (28) et qui présente un deuxième conduit d'introduction (92), qui se termine dans un deuxième évidement (86) et qui est conçu pour introduire le câble électrique (52) dans ce deuxième évidement (86).
  7. Ventilateur selon les revendications 5 et 6, dans lequel une arête d'immobilisation (88) est prévue entre le premier dispositif d'accrochage (84) et le deuxième dispositif d'accrochage (86) sur le boîtier (22) du ventilateur (20), arête qui produit une déviation du câble électrique (52) entre les deux dispositifs d'accrochage, afin d'empêcher que les brins (52) se décrochent des dispositifs d'accrochage (86, 92).
  8. Ventilateur selon la revendication 7, dans lequel l'arête d'immobilisation (88) est réalisée vive.
  9. Ventilateur selon l'une des revendications précédentes, dans lequel le boîtier de ventilateur (22) est réalisé en matière plastique.
  10. Ventilateur selon l'une des revendications précédentes, dans lequel le boîtier de ventilateur (22) présente, vu dans la direction de l'axe de rotation (23), un pourtour approximativement carré présentant des coins (64),
    et le dispositif de soulagement de traction (50) est disposé dans la région d'un coin (64).
EP06010905A 2005-08-19 2006-05-27 Ventilateur Active EP1754892B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005013419 2005-08-19

Publications (2)

Publication Number Publication Date
EP1754892A1 EP1754892A1 (fr) 2007-02-21
EP1754892B1 true EP1754892B1 (fr) 2009-11-25

Family

ID=37307371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06010905A Active EP1754892B1 (fr) 2005-08-19 2006-05-27 Ventilateur

Country Status (4)

Country Link
US (1) US7811069B2 (fr)
EP (1) EP1754892B1 (fr)
AT (1) ATE449912T1 (fr)
DE (1) DE502006005443D1 (fr)

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US7811069B2 (en) 2010-10-12
ATE449912T1 (de) 2009-12-15
US20070041857A1 (en) 2007-02-22
DE502006005443D1 (de) 2010-01-07
EP1754892A1 (fr) 2007-02-21

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