EP0166158B1 - Querstromlüfter - Google Patents

Querstromlüfter Download PDF

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Publication number
EP0166158B1
EP0166158B1 EP85105934A EP85105934A EP0166158B1 EP 0166158 B1 EP0166158 B1 EP 0166158B1 EP 85105934 A EP85105934 A EP 85105934A EP 85105934 A EP85105934 A EP 85105934A EP 0166158 B1 EP0166158 B1 EP 0166158B1
Authority
EP
European Patent Office
Prior art keywords
vortex
impeller
fan
cross
flow
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.)
Expired
Application number
EP85105934A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0166158A1 (de
Inventor
Reinhold Hopfensperger
Klaus Täschner
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
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 Alcatel SEL AG, Standard Elektrik Lorenz AG filed Critical Alcatel SEL AG
Publication of EP0166158A1 publication Critical patent/EP0166158A1/de
Application granted granted Critical
Publication of EP0166158B1 publication Critical patent/EP0166158B1/de
Expired legal-status Critical Current

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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • 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
    • F04D29/422—Discharge tongues
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/914—Device to control boundary layer

Definitions

  • the invention relates to a cross-flow fan, consisting of a fan roller with blade edges running parallel to the axis of rotation, a baffle plate partially encompassing the fan roller, a vortex former and the side parts wholly or partially surrounding the fan roller ends.
  • Such a cross flow fan is known (US-A-3 223 313).
  • Ouerstromllibraryer the edge of the vortex former facing the fan roller is bent up.
  • this measure is only suitable to a limited extent in order to reduce the noise of the cross-flow fan. If the edge of the vortex generator is moved very close to the surface of the fan roller, the siren-like noise of the cross-flow fan is increased rather than reduced.
  • the edge of the vortex generator is moved further away from the surface of the fan roller, the siren-like noise is avoided, but due to the considerable turbulence that then occurs there is a significant drop in air performance, which is accompanied by a high noise component in the noise of the cross-flow fan.
  • a cross-flow fan is also known (DE-A-1 403 553), in which guide bodies are provided which are arranged separately from the vortex former. They should be used to try the siren-like sound, d. H. to suppress the unwanted noise by means of interference. It is intended to produce the same undesired audio frequency, which is, however, out of phase with the audio frequency generated by the vortex generator by 180 °.
  • the correct phase shift is apparently set by the position of the guide body, because with a change in the speed and the flow, the extinction of the unwanted vibrations is no longer guaranteed, so that the guide body, for. B. by pivoting, must be repositioned.
  • the guide body must be in the known solution in the area of the highest intake speeds, which means throttling the cross-flow fan, i.e. H. a reduction in performance.
  • the stable operating behavior of the cross-flow fan with the required power and noise values requires a stable position of the vortex center as well as low-loss intake and exhaust flow.
  • the guiding effect of the vortex forming walls can play an essential role in fulfilling these requirements. The reason for this is that with low to medium throttling of the cross-flow fan, the vortex center is very close to the vortex generator, which results in high velocities of the flow medium on the suction side of the vortex generator.
  • the cross-flow fan can produce a siren-like sound that clearly emerges from the usual noise.
  • This siren-like sound is known to those skilled in the art under the name "scoop frequency peak"; the amount of this tone can be according to the formula: are calculated, where n is the number of revolutions of the fan roller per minute and z is the number of blades of the fan roller.
  • the invention is therefore based on the object of specifying measures which reduce the siren-like sound at a cross-flow fan operated at low to medium counterpressures or completely prevent such that no changes occur in the stable operating behavior and the air performance.
  • the new solution should also be effective for any length of cross-flow fan.
  • this object is achieved in that a sharp-edged interfering body is arranged on the vortex former at a distance displacing from its closest approach to the roller surface, which stretches at least over half the length of the vortex former and the height of which is 0.01 to 0.08 times the roll diameter.
  • a cross-flow fan consists of the guide plate 1, the side parts 2, the fan roller 3 and the vortex former 4.
  • the fan roller 3 is rotated in the direction of arrow 5 by a motor, not shown, then air becomes air sucked in from the space above the vortex former and blown out of the pressure chamber below the vortex former 4 in the direction of arrow 6.
  • the baffle 1 in particular can be clearly seen from the cross section of the cross-flow fan according to FIG. 2.
  • the fan roller should have the diameter D.
  • the fan roller 4 which is rotated in the direction of the arrow 5, causes an intake flow in the space C above the vortex generator 3.
  • the vortex flow 7 with the vortex center 8 is present in the fan roller 3 and below the vortex former 4 in space A is the flow on the pressure side.
  • the blades on their way from room A to room C cross room B, in which there is a strongly turbulent flow.
  • This strongly turbulent flow has its cause in the disturbing body 9 on the vortex generator 4. It has the consequence that the blade does not come abruptly out of the pressure zone into the suction zone, but that the transition takes place gradually.
  • a certain pressure equalization between A and C can take place in room B.
  • the strongly turbulent flow in space B arises on a sharp edge of the disturbing body 9, at which the flow begins to break off.
  • the interfering body 9 can be a web which is stamped out of the vortex former 4 and which extends continuously or in sections over the entire length of the vortex former 4. It is not absolutely necessary for the disturbing body 9 to have the same length as the vortex former, but it should be at least half the length of the vortex former.
  • the interference body can also be put on.
  • FIGS. 4 to 6 show three different embodiments of the disturbing body 9.
  • the disturbing body 9 is a web which is inclined in the direction of the direction of rotation of the fan roller (arrow 5).
  • the web is inclined against the direction of rotation of the fan roller and in the embodiment according to FIG. 6 the web is at right angles to the surface of the vortex generator.
  • the distance a between the ends of the webs and the vortex forming surface should be 0.01 to 0.08 times the fan roller diameter D.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP85105934A 1984-05-16 1985-05-14 Querstromlüfter Expired EP0166158B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418160 1984-05-16
DE19843418160 DE3418160A1 (de) 1984-05-16 1984-05-16 Querstromluefter

Publications (2)

Publication Number Publication Date
EP0166158A1 EP0166158A1 (de) 1986-01-02
EP0166158B1 true EP0166158B1 (de) 1989-03-08

Family

ID=6235999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105934A Expired EP0166158B1 (de) 1984-05-16 1985-05-14 Querstromlüfter

Country Status (4)

Country Link
US (1) US4712976A (ko)
EP (1) EP0166158B1 (ko)
JP (1) JPS60256594A (ko)
DE (2) DE3418160A1 (ko)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913622A (en) * 1987-01-30 1990-04-03 Sharp Kabushiki Kaisha Cross flow fan system
US5197850A (en) * 1987-01-30 1993-03-30 Sharp Kabushiki Kaisha Cross flow fan system
US5120193A (en) * 1990-02-26 1992-06-09 General Motors Corporation Baffle for reducing airflow noise in a scroll housing
US5314300A (en) * 1992-01-13 1994-05-24 Fasco Industries, Inc. Noise control device for centrifugal blower
US5388958A (en) * 1993-09-07 1995-02-14 Heat Pipe Technology, Inc. Bladeless impeller and impeller having internal heat transfer mechanism
DE9400977U1 (de) * 1994-01-21 1994-04-14 Erwin Müller GmbH & Co, 49808 Lingen Gebläsekonvektor
US5484259A (en) * 1994-06-13 1996-01-16 Emerson Electric Co. Low noise centrifugal blower
JP3632789B2 (ja) * 1995-08-28 2005-03-23 東陶機器株式会社 多翼遠心ファンの設計方法及び多翼遠心ファン
AU719205B2 (en) * 1996-08-23 2000-05-04 Mitsubishi Denki Kabushiki Kaisha Air conditioner indoor unit
US5868551A (en) * 1997-05-02 1999-02-09 American Standard Inc. Tangential fan cutoff
US5944481A (en) * 1997-11-10 1999-08-31 Carrier Corporation Transverse fan with flow stabilizer
DE10038753B4 (de) * 2000-08-09 2006-07-06 Ltg Aktiengesellschaft Querstromventilator

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1252057A (fr) * 1959-04-15 1961-01-27 Appareil de chauffage et d'aération de locaux et d'objets
GB973475A (en) * 1961-03-08 1964-10-28 Apsley Metal Products Ltd Improvements in or relating to cross-flow blowers
US3295750A (en) * 1962-09-05 1967-01-03 Laing Vortex Inc Cross flow machine
US3223313A (en) * 1964-02-04 1965-12-14 Lau Blower Co Air moving device
DE1428130A1 (de) * 1964-10-03 1968-11-28 Ernst Heinkel Ag Geblaese,insbesondere Tangentialgeblaese
DE1503673B2 (de) * 1965-03-30 1972-07-06 Zenkner, Kurt, Dr.-Ing., 7505 Ettlingen Gehaeuse fuer querstromgeblaese
DE1951115B2 (de) * 1969-10-10 1976-10-21 Böhler-Zenkner GmbH & Co KG Strömungstechnik, 4005 Meerbusch Querstromgeblaese
US4073338A (en) * 1973-06-26 1978-02-14 Toyota Chuo Kenkyusho Heat exchangers
SU503044A1 (ru) * 1973-10-25 1976-02-15 Институт Горной Механики И Технической Кибернетики Имени М.М.Федорова Центробежный вентил тор
DE2414610C3 (de) * 1974-03-26 1980-11-13 Standard Elektrik Lorenz Ag, 7000 Stuttgart Querstromlufter
DE2448362C2 (de) * 1974-10-10 1983-01-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Als Klein- oder Kleinstlüfter ausgebildeter Querstromlüfter mit in den endscheibennahen Randzonen erhöhter Luftaustrittsgeschwindigkeit
US4078870A (en) * 1976-06-16 1978-03-14 International Standard Electric Corporation Tangential blower
JPS5651852Y2 (ko) * 1978-07-07 1981-12-03

Also Published As

Publication number Publication date
DE3568613D1 (en) 1989-04-13
EP0166158A1 (de) 1986-01-02
DE3418160A1 (de) 1985-11-28
JPS60256594A (ja) 1985-12-18
JPH0448959B2 (ko) 1992-08-10
US4712976A (en) 1987-12-15

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