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NO124953B - - Google Patents

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Publication number
NO124953B
NO124953B NO16410566A NO16410566A NO124953B NO 124953 B NO124953 B NO 124953B NO 16410566 A NO16410566 A NO 16410566A NO 16410566 A NO16410566 A NO 16410566A NO 124953 B NO124953 B NO 124953B
Authority
NO
Norway
Prior art keywords
fan
outlet
wall
blades
area
Prior art date
Application number
NO16410566A
Other languages
Norwegian (no)
Inventor
S Kristiansen
Original Assignee
Nordisk Ventilator
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 Nordisk Ventilator filed Critical Nordisk Ventilator
Publication of NO124953B publication Critical patent/NO124953B/no

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08Centrifugal pumps
    • F04D17/16Centrifugal pumps for displacing without appreciable compression
    • F04D17/165Axial entry and discharge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226Fan casings
    • F04D29/4253Fan casings with axial entry and discharge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/02Roof ventilation
    • F24F7/025Roof ventilation with forced air circulation by means of a built-in ventilator

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Body Structure For Vehicles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Anordning ved veggaksialvifter. Device for wall axial fans.

Denne oppfinnelse vedrører en anordning ved sådanne veggaksialvifter som omfatter en veggring som danner viftehuset og tjener som vegg til fastgjøring av viften og hvori aksialviftehjulet er dreibart anordnet. This invention relates to a device for such wall axial fans which comprises a wall ring which forms the fan housing and serves as a wall for fixing the fan and in which the axial fan wheel is rotatably arranged.

Formålet med oppfinnelsen er å skaffe en vifte av den type som gjør minst mulig forstyrrende støy. The purpose of the invention is to provide a fan of the type that makes the least possible disturbing noise.

Dette oppnås ved den kombinasjon at veggringens indre mantelflate i området for skovlene utvider seg bueformet i retning fra vifteutløpet mot vifteinnløpet frem til minst i høyde med skovlenes forkant, videre at skovltoppenes mot veggringens mantelflate rettede kanter, projisert på et plan parallelt med viftehj ulets omdreiningsakse, har en form svarende til veggringens bueform i området for skovlene, videre at viftehjulets navdiameter øker i retning fra vifteinnløpet mot utløpet på en sådan måte at sluttdiameteren ved vifteutløpet går opp til minst 0,4 og høyst 0,8 ganger vifteutlø-pets diameter, og endelig at viftens inn-løpsareal regnet ved skovlenes forkanter går opp til 1,5—2,0 ganger utløpsarealet. This is achieved by the combination that the inner casing surface of the wall ring in the area of the blades expands in an arc in the direction from the fan outlet towards the fan inlet up to at least the height of the leading edge of the blades, further that the edges of the blade tops are directed against the casing surface of the wall ring, projected on a plane parallel to the axis of rotation of the fan wheel, has a shape corresponding to the arc shape of the wall ring in the area of the blades, further that the hub diameter of the fan wheel increases in the direction from the fan inlet towards the outlet in such a way that the final diameter at the fan outlet goes up to at least 0.4 and at most 0.8 times the diameter of the fan outlet, and finally, that the fan's inlet area, calculated at the leading edges of the blades, amounts to 1.5-2.0 times the outlet area.

Ved å utføre viften på denne måte oppnås foruten den ettertraktede stille gang også at viften blir enklere og billigere i utførelse, idet veggringen og viftehj ulsna-vet lettere lar seg fremstille ved presning av plane plater. By designing the fan in this way, in addition to the sought-after quiet operation, it is also achieved that the fan is simpler and cheaper to manufacture, as the wall ring and the fan wheel hub can be more easily produced by pressing flat plates.

Oppfinnelsen skal i det følgende for-klares nærmere under henvisning til den på tegningen viste utførelsesform. In the following, the invention will be explained in more detail with reference to the embodiment shown in the drawing.

Fig. 1 viser vegg-aksialviften i aksialt lengdesnitt, mens fig. 2 viser også i snitt og i større målestokk en del av veggringen og en av skovlene. Fig. 1 shows the wall axial fan in axial longitudinal section, while fig. 2 also shows in section and on a larger scale part of the wall ring and one of the vanes.

På tegningen betegner 1 en veggring, hvori der med to eller flere bærearmer 2 er opphengt en elektrisk motor 3, på hvis aksel 4 aksial viftehj ulet 5 er festet. In the drawing, 1 denotes a wall ring, in which an electric motor 3 is suspended with two or more support arms 2, on whose shaft 4 the axial fan wheel 5 is attached.

Etter oppfinnelsen består veggringen av et ringparti 8 som fra vifteutløpet 6 utvider seg bueformet i retning mot vifte-innløpet 7 og et til dette sluttende ringparti 9 med mere på tvers rettet bøyning. Ringpartiets 8 bueform er fremstillet med en radius R, som går opp til minst 0,1 ganger vifteutløpets 8 diameter D, hensikts-messig 0,1—0,3 D. Bueformen for ringpartiet 8 er videre utført slik, at tangenten til ringpartiets 8 tverrsnittsprofil ved utlø-pet er i hovedsaken parallell med viftehj ulsakslen 4. Det til ringpartiet 8 sluttende ringpartis 9 bøyning er utført med en radius r, som er minst 0,02 D, hensikts-messig mellom 0,02 og 0,06 D, mens tangenten til dette ringparti i minst ett punkt er vinkelrett på viftehj ulsakslen 4. Ved den viste utførelsesform er ringpartiet 9 dess-uten forsynt med en bakutrettet flens 10, som er bestemt til å støtte seg mot veggen, når viften er montert. According to the invention, the wall ring consists of a ring part 8 which expands from the fan outlet 6 in an arc-shaped direction towards the fan inlet 7 and a ring part 9 ending therewith with a more transversely directed bend. The arc shape of the ring part 8 is made with a radius R, which goes up to at least 0.1 times the diameter D of the fan outlet 8, suitably 0.1-0.3 D. The arc shape of the ring part 8 is further made so that the tangent to the ring part 8 cross-sectional profile at the outlet is essentially parallel to the fan wheel shaft 4. The bend of the ring part 9 ending in the ring part 8 is made with a radius r, which is at least 0.02 D, suitably between 0.02 and 0.06 D, while the tangent to this ring part in at least one point is perpendicular to the fan wheel shaft 4. In the embodiment shown, the ring part 9 is additionally provided with a rear-facing flange 10, which is intended to rest against the wall when the fan is mounted.

Viftehj ulet 5 består av et nav 11, som i retning fra innløpet 7 og mot utløpet 6 utvider seg bueformet og hvis største diameter går opp til minst 0,4 D og høyst 0,8 D. På navet 11 er vifteskovlene 12 festet. Disses toppartier er således utført, at de mot veggringen rettede kanter 13 proji-serte på et plan parallelt med viftehj ulaks-len 4 følger veggringens bueform, men med et visst spillerom. Skovlenes toppartier bør helst, som det fremgår av tegningen, ligge helt innenfor veggringen. The fan wheel 5 consists of a hub 11, which in the direction from the inlet 7 and towards the outlet 6 expands arc-shaped and whose largest diameter goes up to at least 0.4 D and at most 0.8 D. The fan blades 12 are attached to the hub 11. The top portions of these are designed so that the edges 13 directed towards the wall ring, projected on a plane parallel to the fan wheel shaft 4, follow the arc of the wall ring, but with a certain leeway. Ideally, as can be seen from the drawing, the tops of the vanes should lie completely within the wall ring.

Oppfinnelsen er naturligvis ikke be-grenset til den viste og forklarte utførel-sesform men den kan varieres på flere må-ter innenfor oppfinnelsens ramme. The invention is of course not limited to the embodiment shown and explained, but it can be varied in several ways within the scope of the invention.

Claims (1)

Anordning ved sådanne veggaksialvifter som omfatter en veggring som dannerDevice for such wall axial fans which comprise a wall ring which forms viftehuset og tjener som vegg til fastgjø-ring av viften og hvori aksialviftehjulet er dreibart anordnet, karakterisert ved den kombinasjon at veggringens indre mantelflate i området for skovlene utvider seg bueformet i retning fra vifteutløpet mot vifteinnløpet frem til minst i høyde med skovlenes forkant, videre at skovltoppenes mot veggringens mantelflate rettede kan ter, projisert på et plan parallelt med viftehj ulets omdreiningsakse, har en form svarende til veggringens bueform i området for skovlene, videre at viftehj ulets navdiameter øker i retning fra vifteinnløpet mot utløpet på en sådan måte at sluttdiameteren ved vifteutløpet går opp til minst 0,4 og høyst 0,8 ganger vifteutløpets diameter, og endelig at viftens innløps-areal regnet ved skovlenes forkanter går opp til 1,5—2,0 ganger utløpsarealet.the fan housing and serves as a wall for fixing the fan and in which the axial fan wheel is rotatably arranged, characterized by the combination that the inner mantle surface of the wall ring in the area of the blades expands in an arc-shaped direction from the fan outlet towards the fan inlet up to at least the height of the leading edge of the blades, further that the vane tops can be directed against the wall ring's mantle surface ter, projected on a plane parallel to the axis of rotation of the fan wheel, has a shape corresponding to the arc shape of the wall ring in the area of the blades, further that the hub diameter of the fan wheel increases in the direction from the fan inlet towards the outlet in such a way that the final diameter at the fan outlet goes up to at least 0, 4 and no more than 0.8 times the diameter of the fan outlet, and finally that the fan's inlet area calculated at the front edges of the blades goes up to 1.5-2.0 times the outlet area.
NO16410566A 1965-08-02 1966-07-29 NO124953B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK396665A DK118475B (en) 1965-08-02 1965-08-02 Radial fan with axial outflow.

Publications (1)

Publication Number Publication Date
NO124953B true NO124953B (en) 1972-06-26

Family

ID=8128774

Family Applications (1)

Application Number Title Priority Date Filing Date
NO16410566A NO124953B (en) 1965-08-02 1966-07-29

Country Status (8)

Country Link
CH (1) CH466493A (en)
DE (1) DE1628335A1 (en)
DK (1) DK118475B (en)
FI (1) FI47012C (en)
GB (1) GB1160136A (en)
NL (1) NL6610801A (en)
NO (1) NO124953B (en)
SE (1) SE310753B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457349A (en) * 1977-09-22 1979-05-09 Northern Eng Ind Ventilating device
IT1166757B (en) * 1979-04-23 1987-05-06 Vortice Elettrosociali Spa FAN UNIT IN PARTICULAR FOR EXTRACTION HOODS
DE3028606A1 (en) * 1980-07-28 1982-03-04 Wilhelm Gebhardt Gmbh, 7112 Waldenburg FOR INSTALLATION IN PIPELINES, CHANNELS OR CHANNEL-LIKE HOUSINGS OR. FAN UNIT DETERMINED IN VENTILATION AND AIR CONDITIONING
US4798518A (en) * 1982-03-09 1989-01-17 Wilhelm Gebhardt Gmbh Fan unit for use with duct systems
DE3219453A1 (en) * 1982-05-24 1983-11-24 Josef Dipl.-Ing. 7758 Meersburg Mollerus Device with a blower
DE3440322A1 (en) * 1984-11-05 1986-05-15 Hartwig 6965 Ahorn Straub Method and device for conveying a medium
DE3706772A1 (en) * 1987-03-03 1988-09-15 Gebhardt Gmbh Wilhelm FAN UNIT AND METHOD FOR PRODUCING THE GUIDING BLADES OF SUCH A FAN UNIT
IT218171Z2 (en) * 1988-06-17 1992-04-08 Zanussi A Spa Industrie DOMESTIC DRYER.
DE4021316A1 (en) * 1989-07-25 1991-02-07 Neuhaus Gerhard Axial delivery fan for box-shaped housing - with provision of deflection plate to improve efficiency
US5230327A (en) * 1992-07-28 1993-07-27 Jang Sun Sing Kitchen smoke exhauster
SE503510C2 (en) * 1993-05-17 1996-07-01 Hans Oestberg Housing for radial-type duct fan, which housing when locking the motor bridge with the fan motor mounted on it and its radial fan wheels in the right place in the housing
DE4335686B4 (en) * 1993-10-20 2006-07-27 Robert Bosch Gmbh fan
SE9601027L (en) * 1996-03-18 1997-02-24 Industriventilation Produkt Ab Radial fan with hinge plate arranged in the house
DE19626896C2 (en) * 1996-07-04 2001-08-23 Mayer Gmbh Geb Fan
DE19640890B8 (en) * 1996-07-19 2005-12-01 Motoren Ventilatoren Landshut Gmbh High Pressure Blower
FR2825142B1 (en) 2001-05-22 2003-08-29 Conseils Etudes Et Recherches En Gestion De Lair Cerga FAN INTENDED TO BE ASSOCIATED WITH AN AIR EXHAUST DUCT OUTSIDE AT LEAST ONE PREMISES
NZ597253A (en) 2006-05-24 2013-06-28 Resmed Motor Technologies Inc Compact low noise efficient blower for CPAP devices
DE102007055507A1 (en) * 2007-11-21 2009-06-04 Georg Emanuel Koppenwallner Bevel lip spiral
CN104454634A (en) * 2013-09-13 2015-03-25 博西华电器(江苏)有限公司 Range hood and fan system thereof
EP3015713A1 (en) 2014-10-30 2016-05-04 Nidec Corporation Blower apparatus
US10330104B2 (en) 2015-10-30 2019-06-25 Lg Electronics Inc. Air conditioner
KR101769817B1 (en) * 2015-10-30 2017-08-30 엘지전자 주식회사 apparatus for both humidification and air cleaning
CN106151080A (en) * 2016-08-29 2016-11-23 浙江金盾风机股份有限公司 A kind of low-resistance Centrafugal roof fan
DE102017215261B4 (en) * 2017-08-31 2020-12-24 BSH Hausgeräte GmbH BLOWER FOR AN ELECTRICAL DEVICE
AU2020233744B2 (en) * 2019-09-20 2023-06-29 ResMed Pty Ltd System and Method for Reducing Noise in a Flow Generator
SE545112C2 (en) * 2020-03-24 2023-04-04 Swegon Operations Ab Air Handling Unit comprising flow guiding stator disc
DE102020119881A1 (en) * 2020-07-28 2022-02-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Tube fan designed as a radial fan

Also Published As

Publication number Publication date
DK118475B (en) 1970-08-24
CH466493A (en) 1968-12-15
FI47012C (en) 1973-08-10
DE1628335A1 (en) 1970-05-21
FI47012B (en) 1973-05-02
NL6610801A (en) 1967-02-03
SE310753B (en) 1969-05-12
GB1160136A (en) 1969-07-30

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