CH168062A - Knee fitted with guide vanes, especially in ventilation ducts. - Google Patents

Knee fitted with guide vanes, especially in ventilation ducts.

Info

Publication number
CH168062A
CH168062A CH168062DA CH168062A CH 168062 A CH168062 A CH 168062A CH 168062D A CH168062D A CH 168062DA CH 168062 A CH168062 A CH 168062A
Authority
CH
Switzerland
Prior art keywords
knee
ventilation ducts
guide vanes
fitted
vanes
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Gebr Sulzer
Original Assignee
Sulzer 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 Sulzer Ag filed Critical Sulzer Ag
Publication of CH168062A publication Critical patent/CH168062A/en

Links

Classifications

    • 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
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Description

  

  Mit Zeitschaufeln versehenes Knie,     insbesondere    in Lüftungskanälen.    Die Erfindung     betrifft    ein mit     Leitschau-          feln    versehenes Knie, insbesondere in Lüf  tungskanälen und besteht darin, dass der  Abstand, in dem die Schaufeln voneinander  angeordnet sind, kleiner oder etwa gleich dem  0,7 fachen     Krümmungsradius    der Schaufeln ist.  



  Versuche haben gezeigt, dass bei diesen  Verhältnissen von     Schaufelabstand    und     Krüm-          mungsradius    die Druckverluste im Knie er  heblich kleiner als bei den bisher üblichen  Schaufelanordnungen sind.  



  Ein Ausführungsbeispiel des Erfindungs  gegenstandes ist auf der Zeichnung schema  tisch dargestellt.  



       Fig.    1 ist ein Schnitt längs der Achsen  ebene des Knies und     Fig.    2 ein Diagramm,  in dem der Druckverlust in ein und dem  selben Knie in Abhängigkeit vom Verhältnis  zwischen Schaufelradius und     Scbaufelabstand     aufgetragen ist.  



       a    ist der eine, b der andere Schenkel  des Knies eines Lüftungskanals und c sind  in an sich bekannter Weise an den Seiten-    wänden des Knies befestigte     Umlenkschau-          feln,    welche den Zweck haben, die durch  das Knie hindurchgetriebene Luft     wirbelungs-          frei    von der einen Strömungsrichtung in die  andere umzulenken.  



  Aus dem als Resultat einer Versuchsreibe  erhaltenen Diagramm ist     ersichtlieb,    dass  der Druckverlust A p im Knie in dem Ge  biet, in welchem der Schaufelabstand s kleiner  oder etwa gleich dem 0,7 fachen     Krümmungs-          radius    der Schaufeln ist, erheblich kleiner  als bei grösserem Abstand ausfällt.



  Knee fitted with time blades, especially in ventilation ducts. The invention relates to a knee provided with guide vanes, in particular in ventilation ducts, and consists in the fact that the distance at which the vanes are arranged from one another is less than or approximately equal to 0.7 times the radius of curvature of the vanes.



  Tests have shown that with these relationships between the blade spacing and the radius of curvature, the pressure losses in the knee are considerably smaller than in the case of the previously customary blade arrangements.



  An embodiment of the subject invention is shown schematically in the drawing.



       Fig. 1 is a section along the axis plane of the knee and Fig. 2 is a diagram in which the pressure loss in one and the same knee is plotted as a function of the ratio between blade radius and blade spacing.



       a is one leg, b the other leg of the knee of a ventilation duct and c are deflection blades attached in a manner known per se to the side walls of the knee, which have the purpose of keeping the air driven through the knee free of turbulence from the one Divert flow direction in the other.



  From the diagram obtained as the result of a test grater it can be seen that the pressure loss A p in the knee in the area in which the blade spacing s is less than or approximately equal to 0.7 times the radius of curvature of the blades is considerably smaller than with a greater distance fails.

Claims (1)

<B>PATENTANSPRUCH</B> Mit Leitschaufeln versehenes Knie, ins besondere in Lüftungskanälen, dadurch ge kennzeichnet, dass der Abstand, in dem die Schaufeln voneinander angeordnet sind, klei ner oder etwa gleich dem 0,7 fachen Krüm- mungsradius der Schaufeln ist. <B> PATENT CLAIM </B> Knee provided with guide vanes, in particular in ventilation ducts, characterized in that the distance at which the vanes are arranged from one another is smaller than or approximately equal to 0.7 times the radius of curvature of the vanes .
CH168062D 1933-07-25 1933-07-25 Knee fitted with guide vanes, especially in ventilation ducts. CH168062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH168062T 1933-07-25

Publications (1)

Publication Number Publication Date
CH168062A true CH168062A (en) 1934-03-31

Family

ID=4420377

Family Applications (1)

Application Number Title Priority Date Filing Date
CH168062D CH168062A (en) 1933-07-25 1933-07-25 Knee fitted with guide vanes, especially in ventilation ducts.

Country Status (1)

Country Link
CH (1) CH168062A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19733941A1 (en) * 1997-08-06 1999-02-11 Klein Schanzlin & Becker Ag Guide device for pipe elbow for pumps, etc.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19733941A1 (en) * 1997-08-06 1999-02-11 Klein Schanzlin & Becker Ag Guide device for pipe elbow for pumps, etc.

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