EP1939456A2 - Dispositif de passage d'air - Google Patents

Dispositif de passage d'air Download PDF

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Publication number
EP1939456A2
EP1939456A2 EP07014648A EP07014648A EP1939456A2 EP 1939456 A2 EP1939456 A2 EP 1939456A2 EP 07014648 A EP07014648 A EP 07014648A EP 07014648 A EP07014648 A EP 07014648A EP 1939456 A2 EP1939456 A2 EP 1939456A2
Authority
EP
European Patent Office
Prior art keywords
air passage
passage device
fan
section
air
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
EP07014648A
Other languages
German (de)
English (en)
Other versions
EP1939456B1 (fr
EP1939456A3 (fr
Inventor
Andreas Pfannenberg
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.)
Pfannenberg GmbH
Original Assignee
Pfannenberg 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
Priority claimed from DE202006019690U external-priority patent/DE202006019690U1/de
Priority claimed from DE200620019691 external-priority patent/DE202006019691U1/de
Application filed by Pfannenberg GmbH filed Critical Pfannenberg GmbH
Publication of EP1939456A2 publication Critical patent/EP1939456A2/fr
Publication of EP1939456A3 publication Critical patent/EP1939456A3/fr
Application granted granted Critical
Publication of EP1939456B1 publication Critical patent/EP1939456B1/fr
Not-in-force 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • 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
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow

Definitions

  • the invention relates to an air passage device, in particular filter fan or outlet filter, according to the preamble of claim 1.
  • a filter mat preferably made of a knitted or needled plastic material in the fan to filter out these dust and dirt particles from the air conveyed through the fan in a flow direction.
  • a filter mat is arranged with a gap between the filter mat and the fan of a basic housing and a fan carrier is sealed against the environment substantially airtight.
  • the filter mats used in these filter fans are arranged between the outer fan grille and the base housing.
  • the fan grid is mediated Clamping or locking connections or screw connections to the basic housing releasably connected.
  • the air outlet of the air passage device is covered in known fans with a grid element that covers either the outlet plan or cupped.
  • the air emerging from the air outlet through the grille element into the housing moves axially or in the direction of flow straight into the housing. Afterwards the air has to distribute itself or an active air distribution has to be done. It is desirable that an active air distribution can be avoided or the air better distributed itself. Furthermore, there is the possibility that parts of the exiting air flow are sucked in particular centrally again into the passage.
  • Object of the present invention is to provide an air passage device according to the type described above in such a way that the air emerging from the air passage device is discharged into the housing in several directions, and a return of air is avoided.
  • the invention consists in that on the air outlet side of the air passage device over an air outlet, a grid element is arranged, which has a rising portion and a planar portion, wherein the rising portion merges into the planar portion, and on the planar portion a full-surface portion is provided ,
  • the advantage here is that through the structure of the grid element, the outflowing air through the rising portion predominantly in the lateral region of the grid, so rather radially, is discharged, whereby a better mixing is achieved within the housing.
  • the full-surface section acts as a flow obstacle. At the same time the installation depth is reduced compared to conventional oval grid elements.
  • the full-surface section also acts as a blocking element, which prevents the backflow of air into the housing.
  • a further embodiment of the invention provides that the fan carrier is provided with a side wall and with a receptacle for a fan, preferably consisting of a rotor, preferably consisting of wings, or a rotor and a drive, wherein the fan carrier on the side of the Grid member having a diffuser-like portion which is preferably part of the side wall or is integral with the side wall and the portion opposite the side wall by an internal angle ( ⁇ ) is deflected, which is between 180 ° and 270 °, particularly preferably 290 °, and wherein the grid member has a rising or falling portion and a planar portion, wherein the rising or falling portion merges into the planar portion, and on the planar portion a full-surface portion is provided.
  • ⁇ internal angle
  • this embodiment additionally achieves that an increase in the output of the air power is achieved by preventing the backflow. This is in a range of up to 10%. Furthermore, it is advantageous that a diffuser-like structure of the exhaust side as possible resistance-free air outlet can take place. There are only slight pressure losses.
  • the shape of the diffuser-like section enables a particularly efficient release of air. Moving the starting point to the center causes a reduction of the free discharge surface, whereby the remindsaug Schl is further reduced.
  • the provision of a smooth transition from the side wall to the diffuser-like portion causes less resistance and thus less flow losses in the transition into the diffuser-like portion, even a resistance-free air outlet is feasible.
  • the central provision of a full-area section allows a simple deflection of a portion of the air flow flowing through the air passage device in a radial direction. Provision of a small full-area section with respect to the planar section allows an air flow component axially out of the air passage device.
  • FIG. 1 an air passage device 10 is shown in front view.
  • a so-called design cover 15 is provided, through which air into the air passage device 10 by a blower 20 (see Fig. 5 ) is sucked.
  • the design cover 15 is provided with movable sipe elements 16.
  • the design cover 15 is arranged on a base housing 11, to which a fan support 12 is connected. Within the fan carrier 12, the blower 20 is arranged.
  • the fan carrier has a side wall 19. In the rear region of the side wall 19, a diffuser region 22 is arranged. This region 22 is angled relative to the side wall 19 to a transition region 22.
  • a rear wall 18 is arranged, on which a grid element 30 is arranged.
  • the air passage device 10 in Fig. 2 is shown with open design cover 15. Behind the design cover 15, a filter mat 13 is arranged, which filters out dust from the sucked air. Behind the filter mat 13, a grid element 14 is arranged. This acts as a fan grid and shields the fan 20 against reaching, for example, when the filter mat 13 is changed.
  • a grid element 30 is arranged, which is connected to the rear wall via fastening portions 34 ( Fig. 3 ).
  • a barred area which consists of a rising area 35 and a planar area 36.
  • the grid element 30 is constructed here from annular bars 31 and carrier webs 33.
  • a plate member 32 is arranged, which acts as a flow resistance and thus as a deflecting element for the exiting air.
  • Fig. 4 shows a rear view analog Fig. 3 with closed design lid.
  • Fig. 5 the air passage device 10 is shown in the installed state in a mounting wall 50.
  • a seal 17 is arranged between the mounting wall 50 and the base housing 11, which ensures that in the transition region from the mounting wall to the air passage device 10 no air can enter.
  • FIG Fig. 6 An enlarged view of the grid element 30 is shown in FIG Fig. 6 shown.
  • area A the sucked air moves toward the grid element 30.
  • the plate member 32 By the plate member 32, the air that meets this deflected to the side.
  • the air flow is divided into an axial component B and a radial component C.
  • the axial component B exits through the planar portion 36 of the grid element.
  • the radial component C exits through the rising portion 35.
  • Additional guide elements o. ⁇ . can be provided.
  • the air can pass through the grating element 30 faster, whereby an increase in the air flow in the fan 20 is accompanied by an increase in performance.
  • the lateral discharge of the air and a reverse suction in the region of the plate member 32 is basically reduced.
  • the provision of the plate member 32 prevents a return flow of the air into the air passage device 10th
  • Fig. 7 the fan carrier 12 is shown cut in a first embodiment.
  • a fan 20 is arranged within the fan carrier 12.
  • the fan 20 consists of a rotor with vanes 27 and a drive 24 in the form of a motor.
  • the wing 27 has a tip 25 and a trailing edge 26.
  • the fan support 12 consists inter alia of the side wall 19 and the diffuser region 22.
  • a first embodiment of the arrangement of the diffuser region 22 is shown in FIG Fig. 7 shown.
  • Another embodiment follows in Fig. 9 ,
  • the diffuser region 22 is connected to the side wall 19. However, the connection is made in the end region of the fan support 12 in the rear side region 21 of the air passage device 10.
  • the diffuser region 22 is designed to be incident with respect to the side wall 19. The collapse occurs with respect to the side wall by an outer angle ⁇ and an inner angle ⁇ .
  • Fig. 7 the angles between the extension 28 of the side wall 19 and the extension 29 of the Difussor Schemes 22 are shown.
  • the attachment point 41 of the diffuser region 22 relative to the blower 20 is offset from the blower drive 24.
  • the offset 39 is in Fig. 7 between the extension 28 of the side wall 19 and the parallels 38 starting from the starting point of the diffuser region 22 for extending the side wall 28.
  • the starting point of the diffuser region 41 is located immediately behind the trailing edge 26 of the wings 27.
  • Fig. 8 shows one Side view too Fig. 7 with closed illustrated blower support 12 and opened design cover 15th
  • FIG Fig. 9 A further embodiment of the fan carrier 12 with regard to the arrangement of the diffuser region 22 is shown in FIG Fig. 9 shown.
  • the starting point 41 of the diffuser region 22 is located in a transition 23 directly to the side wall 19. The transition takes place both in the outer angle ⁇ and in the inner angle ⁇ soft, to avoid unnecessary flow resistance.
  • the attachment point 41 is arranged at the level of the tip 25 of the wing 27.
  • the grille element 30 is designed so that it does not touch the blower 20 in the event of a change of air direction, although the blower projects with its wings 27 beyond the blower carrier 12.
  • the grid element 30 is again provided centrally with a planar section 36. From the outside to the planar middle section 36, a sloping area 37 is provided, which merges into the planar area 36. Laterally support webs 33 are arranged, are provided on the annular grid bars 31 to provide a comprehensive contact protection for the fan.
EP07014648.5A 2006-12-27 2007-07-26 Dispositif de passage d'air Not-in-force EP1939456B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006019690U DE202006019690U1 (de) 2006-12-27 2006-12-27 Luftdurchtrittsvorrichtung
DE200620019691 DE202006019691U1 (de) 2006-12-27 2006-12-27 Luftdurchtrittsvorrichtung

Publications (3)

Publication Number Publication Date
EP1939456A2 true EP1939456A2 (fr) 2008-07-02
EP1939456A3 EP1939456A3 (fr) 2009-04-29
EP1939456B1 EP1939456B1 (fr) 2014-03-12

Family

ID=39276755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07014648.5A Not-in-force EP1939456B1 (fr) 2006-12-27 2007-07-26 Dispositif de passage d'air

Country Status (3)

Country Link
US (1) US9677571B2 (fr)
EP (1) EP1939456B1 (fr)
RU (1) RU2353819C1 (fr)

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US8197226B2 (en) 2009-03-04 2012-06-12 Dyson Technology Limited Fan assembly
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US8454322B2 (en) 2009-11-06 2013-06-04 Dyson Technology Limited Fan having a magnetically attached remote control
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US10563875B2 (en) 2012-03-06 2020-02-18 Dyson Technology Limited Humidifying apparatus
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US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
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US10428837B2 (en) 2012-05-16 2019-10-01 Dyson Technology Limited Fan
US9732763B2 (en) 2012-07-11 2017-08-15 Dyson Technology Limited Fan assembly
US10612565B2 (en) 2013-01-29 2020-04-07 Dyson Technology Limited Fan assembly
US9797612B2 (en) 2013-01-29 2017-10-24 Dyson Technology Limited Fan assembly
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US9903602B2 (en) 2014-07-29 2018-02-27 Dyson Technology Limited Humidifying apparatus
US9982677B2 (en) 2014-07-29 2018-05-29 Dyson Technology Limited Fan assembly
USD859631S1 (en) 2016-09-20 2019-09-10 Hoffman Enclosures, Inc. Fan shroud
USD851742S1 (en) 2016-09-20 2019-06-18 Hoffman Enclosures, Inc. Support for a fan shroud
DE202018100226U1 (de) * 2018-01-16 2019-04-23 Detlef Weber Modulares Abscheidersystem
CN111405794A (zh) * 2020-04-17 2020-07-10 杭州丰衡机电有限公司 一种智能计算机网络机箱
CN111405794B (zh) * 2020-04-17 2021-04-20 杭州丰衡机电有限公司 一种智能计算机网络机箱

Also Published As

Publication number Publication date
EP1939456B1 (fr) 2014-03-12
EP1939456A3 (fr) 2009-04-29
US20080160898A1 (en) 2008-07-03
RU2353819C1 (ru) 2009-04-27
US9677571B2 (en) 2017-06-13

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