DE338436C - Shovel drum closed on both sides by conical mantles for centrifugal fan - Google Patents

Shovel drum closed on both sides by conical mantles for centrifugal fan

Info

Publication number
DE338436C
DE338436C DENDAT338436D DE338436DD DE338436C DE 338436 C DE338436 C DE 338436C DE NDAT338436 D DENDAT338436 D DE NDAT338436D DE 338436D D DE338436D D DE 338436DD DE 338436 C DE338436 C DE 338436C
Authority
DE
Germany
Prior art keywords
sides
shovel
centrifugal fan
conical
drum closed
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
DENDAT338436D
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE338436C publication Critical patent/DE338436C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/28Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Landscapes

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

Description

Beiderseitig durch Kegelmäntel abgeschlossene Schaufeltrommel für Kreiselgebläse. Es sind Schaufeltrommeln zu Ventilatoren bekannt, die beiderseitig, und zwar teils durch ebene Böden, teils aber durch Kegelmäntel, abgeschlossen sind. Der Vorderabschluß ist dabei stets parallel mit dem Rückwärtsabschluß, er ist bloß nach Festigkeitsrücksichten ausgebildet und greift seinerseits nirgends fördernd in die Windlieferung ein.Shovel drum closed on both sides by conical shells for Centrifugal fan. There are blade drums for fans known, which on both sides, namely partly by level floors, but partly by conical shells. The front end is always parallel with the back end, it is merely trained according to strength considerations and does not have any supportive effect into the wind delivery.

Die Erfindung bezweckt nun, diesen Mangel zu beheben, um die rein passive Rolle des Vorderabschlusses zur Steigerung der Ventilatorleistung in eine aktive zu verwandeln. Die Zeichnungen stellen eine Schaufeltrommel gemäß der Erfindung auf Fig. i im Längsschnitt und auf Fig. 2 im Querschnitt dar.The invention now aims to remedy this deficiency in order to purely passive role of the front end to increase the fan performance in one transform active. The drawings illustrate a paddle drum according to the invention on Fig. i in longitudinal section and on Fig. 2 in cross section.

Die Schaufeltrommel besteht aus Schaufeln i, aus dem bei Nabe 2 auf der Welle 3 befestigten Kegelmantel q, auf welchem die Schaufeln mit ihrer vollen rückwärtigen Breitseite sitzen, sowie aus dem Kegelstumpfmantel 5, der die vorderen Schaufelschmalseiten zusammenfaßt. Der Kegelsturnpfmantel 5 liegt gleichachsig mit dem Kegelmantel q., jedoch mit hierzu verkehrt gerichteter Spitze. Somit erweitern sich die Schaufellücken nach ihren allen vier Grenzflächen hin streudüsenförmig. Die Pfeile zeigen den Luftweg durch die Schaufeltrommel. Die Luft trifft zunächst eine stoßfreie Ablenkung aus der Achsrichtung in die Strahlrichtung, in den Schaufeln aber eine dem erreichten Luftdruck angepaßte Streuung. Somit entsteht der geringste Reibungswiderstand, und Luftwirbelungen werden vermieden. Die sich beständig erweiternden Öuerschnitte erleichtern die Lieferung von möglichst größten Luftmengen. Der Luftdruck wird sodann in an sich bekannter Weise durch entsprechende Form und Zahl der Schaufeln, durch .die Umdrehungszahl, ferner durch ein passendes Gehäuse geregelt.The blade drum consists of blades i, from the one at hub 2 on the shaft 3 attached conical shell q, on which the blades with their full rear broadside sit, as well as from the truncated cone jacket 5, which the front The narrow sides of the blades are summarized. The Kegelsturnpf jacket 5 is coaxial with the cone shell q., but with the tip facing the wrong way round. Thus expand the vane gaps are shaped like a scattering nozzle towards all four interfaces. The arrows show the air path through the paddle drum. The air hits first a bumpless deflection from the axial direction into the jet direction, in the blades but a spread adapted to the air pressure reached. This creates the slightest Frictional resistance and air turbulence are avoided. The constantly expanding Öuerschnitte facilitate the delivery of the largest possible amounts of air. The air pressure is then in a known manner by the appropriate shape and number of blades, by .the number of revolutions, also regulated by a suitable housing.

Claims (1)

PATENT-ANsPRuCH: Beiderseitig durch Kegelmäntel abgeschlossene Schaufeltrommel für Kreiselgebläse, dadurch gekennzeichnet, daß die vordere Schaufelseite durch einen Kegelstumpfmantel (5) abgeschlossen ist, der gleichachsig mit dem rückwärtigen Kegel- mantel (q.), jedoch mit hierzu verkehrt gerichteter Spitze liegt.PATENT CLAIM: Vane drum closed on both sides by conical shells for centrifugal fans, characterized in that the front blade side is closed by a truncated cone shell (5) which is coaxial with the rear cone shell (q.), But with the tip facing the wrong way round.
DENDAT338436D Shovel drum closed on both sides by conical mantles for centrifugal fan Expired DE338436C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338436T

Publications (1)

Publication Number Publication Date
DE338436C true DE338436C (en) 1921-06-18

Family

ID=6222558

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT338436D Expired DE338436C (en) Shovel drum closed on both sides by conical mantles for centrifugal fan

Country Status (1)

Country Link
DE (1) DE338436C (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439933A (en) * 1943-07-28 1948-04-20 Westinghouse Electric Corp Centrifugal blower
US2767906A (en) * 1952-11-07 1956-10-23 Doyle Vacuum Cleaner Co Centrifugal fan wheel
US3394876A (en) * 1959-07-24 1968-07-30 Bruno Eck Drum motor blade construction
US3856432A (en) * 1973-09-27 1974-12-24 Us Army Self-governing turbine speed limiter
US5620306A (en) * 1992-11-12 1997-04-15 Magiview Pty. Ltd. Impeller
WO1997045643A1 (en) * 1996-05-24 1997-12-04 ABB Fläkt AB A fan centrifugal impeller
WO1998003795A1 (en) * 1996-07-18 1998-01-29 The Penn Ventilation Companies, Inc. Fan wheel for an inline centrifugal fan
US5980207A (en) * 1997-08-20 1999-11-09 Xerxes Corporation Backward inclined fan impeller
US6042333A (en) * 1995-01-25 2000-03-28 Magiview Pty. Ltd. Adjustable pitch impeller
WO2001005652A1 (en) * 1999-07-16 2001-01-25 Robert Bosch Corporation Centrifugal impeller with high blade camber

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439933A (en) * 1943-07-28 1948-04-20 Westinghouse Electric Corp Centrifugal blower
US2767906A (en) * 1952-11-07 1956-10-23 Doyle Vacuum Cleaner Co Centrifugal fan wheel
US3394876A (en) * 1959-07-24 1968-07-30 Bruno Eck Drum motor blade construction
US3856432A (en) * 1973-09-27 1974-12-24 Us Army Self-governing turbine speed limiter
US5620306A (en) * 1992-11-12 1997-04-15 Magiview Pty. Ltd. Impeller
US6042333A (en) * 1995-01-25 2000-03-28 Magiview Pty. Ltd. Adjustable pitch impeller
WO1997045643A1 (en) * 1996-05-24 1997-12-04 ABB Fläkt AB A fan centrifugal impeller
WO1998003795A1 (en) * 1996-07-18 1998-01-29 The Penn Ventilation Companies, Inc. Fan wheel for an inline centrifugal fan
US5810557A (en) * 1996-07-18 1998-09-22 The Penn Ventilation Companies, Inc. Fan wheel for an inline centrifugal fan
US5980207A (en) * 1997-08-20 1999-11-09 Xerxes Corporation Backward inclined fan impeller
WO2001005652A1 (en) * 1999-07-16 2001-01-25 Robert Bosch Corporation Centrifugal impeller with high blade camber
US6402473B1 (en) 1999-07-16 2002-06-11 Robert Bosch Corporation Centrifugal impeller with high blade camber

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