DE1993108U - CROSS-FLOW FAN. - Google Patents

CROSS-FLOW FAN.

Info

Publication number
DE1993108U
DE1993108U DES64258U DES0064258U DE1993108U DE 1993108 U DE1993108 U DE 1993108U DE S64258 U DES64258 U DE S64258U DE S0064258 U DES0064258 U DE S0064258U DE 1993108 U DE1993108 U DE 1993108U
Authority
DE
Germany
Prior art keywords
cross
flow fan
blades
fan
rotor
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
DES64258U
Other languages
German (de)
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES64258U priority Critical patent/DE1993108U/en
Publication of DE1993108U publication Critical patent/DE1993108U/en
Expired legal-status Critical Current

Links

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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Landscapes

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

Description

■ίΑ 320.9-61*4 6;■ ίΑ 320.9-61 * 4 6;

SlMEIS AKTIENGESELLSCHAFT Akten ze ichen S 64 258/27 β GbmSlMEIS AKTIENGESELLSCHAFT file number S 64 258/27 β Gbm

Unser Zeichen PLA 68/1178 Le/Hb. . ■ ■Our reference PLA 68/1178 Le / Hb. . ■ ■

QuerstromgebläseCross-flow fan

Die Feuerung betrifft ein Querstromgebläse, d.h. ein. Gebläse mit einem sogenannten Trommelläufer, der die'-Luft auf einem Teil seines Umfanges von außen ansaugt, durch das Innere des Läufers drückt und auf einem anderen Teil seines Umfanges wieder nach außen abgibt. Derartige Gebläse haben eine Reihe von Vorteilen, weisen jedoch noch ein verhältnismäßig hohes Geräusch auf. Dieses Geräusch wird zum großen Teil durch das Vorbeistreichen der Lüfterschaufeln an der Trennwand zwischen Luftaustrittsöffnung und Lufteintrittsöffnung erzeugt. The firing concerns a cross-flow fan, i.e. a. fan with a so-called drum runner, who has the 'air on one Sucks in part of its circumference from the outside, through the inside of the Runner pushes and on another part of its circumference returns to the outside. Such fans have a number of advantages, but still have a relatively high one Noise on. This noise is in large part caused by the The fan blades sweep past the partition between the air outlet opening and the air inlet opening.

Die Heuerung bezweckt eine Verminderung der Geräuschbildung bei Querstromgebläsen und erreicht diese dadurch, daß die Schaufeln des Trommelläufers in axialer Richtung desselben schräg verlaufend angeordnet sind, wie dies für die Schaufeln von Radialgebläsen bereits vorgesehlagen wurde. Durch diese schräge Schaufelanordnung streichen die Schaufeln an der oben erwähnten Trennwand nicht in einer parallelen Ebene zu dieser Wand vorbei, sondern in einer, schräg dazu gerichteten Ebene. Dadurch wird einerseits der Luftstrom nicht mehr wie bisher in gleichmäßiger folge auf einmal plötzlich abgeschnitten, sondern die Abreißwirbel überschneiden sieh, so daß eine starke Geräusehbildungvejt?mieden wird.The purpose of the hiring is to reduce the generation of noise with cross-flow fans and this is achieved by the blades of the drum rotor in the axial direction of the same Are arranged obliquely, as has already been proposed for the blades of radial fans. Through this oblique blade arrangement paint the blades on the top The partition mentioned above does not pass in a plane parallel to this wall, but in one that is inclined to it Level. As a result, on the one hand, the airflow is no longer like so far suddenly cut off in regular succession, but see the tear-off vertebrae overlap, see above that strong noises are avoided.

30.5.1968 ~ 2"5/30/1968 ~ 2 "

- 2 - : ; . ■...; ,'ν 68/1178- 2 -:; . ■ ...; , 'ν 68/1178

Pig-r 1 zeigt in rein schematischer Darstellung einen Trommelläufer der bisherigen Bauart undPig-r 1 shows in a purely schematic representation a drum runner of the previous type and

Fig. 2 einen solchen nach der !Teuerung.Fig. 2 shows one after the inflation.

Bei den "bisherigen Trommelläufern verlaufen die Schaufeln auf dem Läuferumfang parallel zur läuferachse 2. G-emäß der Neuerung hingegen sind die Schaufeln 3 in axialer Richtung schräg angeordnet, wie aus-Mg, 2 ersichtlich. Die Schrägung kann dabei gleich dem Schaufelabstand 4 sein oder kleiner als dieser; je nach Ausführung des Gebläses. Der Vorteil der schrägen Schaufelanordnung wurde bereits vorstehenden beschrieben.With the "previous drum rotors, the blades run on the rotor circumference parallel to the rotor axis 2. According to the innovation, however, the blades 3 are in the axial direction arranged obliquely, as can be seen from-Mg, 2. The bevel can be the same as the blade spacing 4 or less than this; depending on the design of the fan. The advantage the inclined blade arrangement has already been mentioned above described.

Claims (2)

■..: -68/1178 Schutzansprüche;■ ..: -68/1178 protection claims; 1. Querstromgebläse, dadurch gekennzeichnet, daß die Schaufeln (3) des Iromme!läufers in axialer Richtung desselben schräg verlaufend angeordnet sind.1. Cross-flow fan, characterized in that the Blades (3) of the Iromme! Rotor in the axial direction the same are arranged obliquely. 2. Querstromgebläse nach Anspruch 1, dadurch "gekennzeichnet, daß die Schrägung der Schaufeln gleich dem Sehaufelabstand (4) ist.2. Cross-flow fan according to claim 1, characterized in " that the inclination of the blades is equal to the blade spacing (4). 3» Querstromgebläse nach Anspruch 1, dadurch gekennzeichnet, daß die Schrägung der Schaufeln kleiner ali dar ■Sö-haufgla'betaad ist;«3 »Cross-flow fan according to claim 1, characterized in that the inclination of the blades is smaller ali dar ■ Sö-haufgla'betaad is; « le/Hb.le / Hb.
DES64258U 1968-03-06 1968-03-06 CROSS-FLOW FAN. Expired DE1993108U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES64258U DE1993108U (en) 1968-03-06 1968-03-06 CROSS-FLOW FAN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES64258U DE1993108U (en) 1968-03-06 1968-03-06 CROSS-FLOW FAN.

Publications (1)

Publication Number Publication Date
DE1993108U true DE1993108U (en) 1968-09-05

Family

ID=33383670

Family Applications (1)

Application Number Title Priority Date Filing Date
DES64258U Expired DE1993108U (en) 1968-03-06 1968-03-06 CROSS-FLOW FAN.

Country Status (1)

Country Link
DE (1) DE1993108U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048571A1 (en) * 1980-12-22 1982-07-22 Ltg Lufttechnische Gmbh, 7000 Stuttgart Helical impeller blade cross-flow fan - has cut=off gap specified for max pressure ratio and efficiency at min. noise
DE3708130A1 (en) * 1987-03-13 1988-09-22 Braun Ag Centrifugal fan impeller for personal appliances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048571A1 (en) * 1980-12-22 1982-07-22 Ltg Lufttechnische Gmbh, 7000 Stuttgart Helical impeller blade cross-flow fan - has cut=off gap specified for max pressure ratio and efficiency at min. noise
DE3708130A1 (en) * 1987-03-13 1988-09-22 Braun Ag Centrifugal fan impeller for personal appliances

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