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
Links
- 238000004519 manufacturing process Methods 0.000 description 1
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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/165—Axial entry and discharge
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4253—Fan casings with axial entry and discharge
-
- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/02—Roof ventilation
- F24F7/025—Roof 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)
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)
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 |
-
1965
- 1965-08-02 DK DK396665A patent/DK118475B/en unknown
-
1966
- 1966-07-29 NO NO16410566A patent/NO124953B/no unknown
- 1966-08-01 GB GB3448666A patent/GB1160136A/en not_active Expired
- 1966-08-01 NL NL6610801A patent/NL6610801A/xx unknown
- 1966-08-01 FI FI202366A patent/FI47012C/en active
- 1966-08-02 CH CH1112466A patent/CH466493A/en unknown
- 1966-08-02 SE SE1050666D patent/SE310753B/xx unknown
- 1966-08-02 DE DE19661628335 patent/DE1628335A1/en active Pending
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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