DE902298C - Fan for changing directions of rotation - Google Patents

Fan for changing directions of rotation

Info

Publication number
DE902298C
DE902298C DES12671D DES0012671D DE902298C DE 902298 C DE902298 C DE 902298C DE S12671 D DES12671 D DE S12671D DE S0012671 D DES0012671 D DE S0012671D DE 902298 C DE902298 C DE 902298C
Authority
DE
Germany
Prior art keywords
rotation
fan
changing directions
blades
directions
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
DES12671D
Other languages
German (de)
Inventor
Heinrich Schwaighofer
Dipl-Ing Friedrich Stadler
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 DES12671D priority Critical patent/DE902298C/en
Application granted granted Critical
Publication of DE902298C publication Critical patent/DE902298C/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
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • 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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/483—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for elastic fluid pumps

Landscapes

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

Description

Gegenstand ,der Erfindung vst ein Lüfter mit fest eingebauten Schaufeln für wechselnde Drehrichtung, insbesondere für elektrische Maschinen mit Eigenlüftung. Die Erfindung bezweckt, einen solchen Lüfter @so auiszugestalten, @daß Lüfterdruckhöhen erzielt werden, idie im wesentlichen in der Größenordnung jener liegen, die den für nur eine bestimmte Drehrichtung gebauten Lüftern eigen .sind. Bekanntlich: isind die bisher bekannten für beide Drehrichtungen bestimmten Lüfter mit wesentlich radial :gestellten Schaufeln im ihrer Leistung den für nur eine D:re'h.richtung bestimmten Lüftern weit unterlegen.Subject matter of the invention is a fan with permanently installed blades for changing direction of rotation, especially for electrical machines with self-ventilation. The aim of the invention is to design such a fan @so that fan pressure levels are achieved that are essentially of the same order of magnitude as that which the for fans built in only one direction of rotation. As is well known: isind the previously known fans intended for both directions of rotation with essentially radial : provided blades in their performance that intended for only one direction of rotation Far inferior to fans.

Es wurde schon versucht, mit verstellbar eingerichteten Lüfterschaufeln diiesen Nachteil bei Lüftern für beide Drehrichtungen zu beseitigen.Attempts have already been made with adjustable fan blades to eliminate this disadvantage with fans for both directions of rotation.

Lrm den Vorteil der fest eingebauten, Schaufeln beizubehalten, wurde auch schon vorgeschlagen, zweierlei Schaufeln umgleichen Kranz aufeinanderfolgend anzuordnen und diese entsprechend den beiden Drehrichtungen zu krümmen. Diese Anordnung konnte jedoch nicht zum :gewünschten. Ziel führen, dia -bei ihr besonders unbgunstige Verhältnisse hi:nsichtlirch Wirbelbildung auftreten; die eine Verbesserung des Nutzeffektes des Lüfters vereiteln.Noise was to maintain the advantage of the built-in, vanes also already proposed, two kinds of blades around the same wreath one after the other to be arranged and to bend them according to the two directions of rotation. This arrangement but could not get to the: desired. Lead the goal, which is particularly unfavorable for you Conditions in which eddy formation occurs; which improves the efficiency thwart the fan.

Nach der Erfindung wird ein für beide Drehrichtun(gen gleich geeigneter Lüfter mit fest eingebauten Schaufeln ohne die vorgenannten Nachteile dadurch erhalten, @daß der Lüfter aus zwei axial nebeneinanderliegenden, vorzugsweise je in einer eigenen Kammer untergebrachten Schaufelsystemen besteht, von, denen das eine für die eine Drehrichtung, Idas iandere für die ,andere Drehrichtung ausgebildet eist. Durch Anordnung von, zwei getrennten je einer Drehrichtung angepaßten Luftführungen beim Luftaustritt z. B.,durch Anordnung von je einem Spiraligehäu.se oder je einem Leitapparat für Rechts- und Linkslauf kann die Förderwirkung noch wesentlich verstärkt werden.According to the invention, one is equally suitable for both directions of rotation Fans with permanently installed blades without the aforementioned disadvantages are obtained by @ That the fan consists of two axially adjacent, preferably each in one own chamber housed shovel systems, one of which is for the one direction of rotation, the other being designed for the other direction of rotation. By arranging two separate air ducts each adapted to one direction of rotation at the air outlet z. B., by arranging a Spiraligehäu.se or one each Guide apparatus for clockwise and counterclockwise rotation can significantly increase the conveying effect will.

In der Zeichnung (sind Ausführungsbeispiele ,der Erfindung dargestellt. Feig. i zeigt einen Lüfter gemäß der Erfindung in achssenkrechtem Schnitt, Fiig. a nm .achsebenen Schnitt. Dias ,auf der Nabe a sitzende Lüfterrad i trägt zwei axial nebeneinanderliegende Schaufelkränze Schaufelkränze 3 .und, 3', die in zwei durch eine Wand 4 voneinander getrennten Kammern untergebracht @sind. Die Schaufeln 3, im Fig. i VOM gezeichnet, sind für Förderung bei Rechtslauf ausgebildet, die Schaufeln 3', in Fig. i strichliert gezeichnet, für Förderung bei Linkslauf. 5 und 5' siind zueinander !symmetrisch .angeordnete Spiralgehäuse, von denen jedes je einem Schaufelisystem 3 bzw. 3' -des Lüfters zugeordnet isst. Nach Fig. 3 und 4 -isst für jedes Schaufelisy stem 3 bzw. 3' ein eigener edier Drehrichtung angepaßter Leitapparat 6 bzw. 6' an der Luftaustrittslstelle vorgesehen. Zum voll gezeichneten Schaufelisystem 3 gehört oder voll gezeichnete Leitapparat 6, zuan strichliert gezeichneten ScUaufel,system 3' gehört der ,strich kliert gezeichnete Leitapparat 6'.In the drawing (exemplary embodiments of the invention are shown. Fig. I shows a fan according to the invention in a perpendicular section, Fig. A. Axial section. Dias, on the hub a seated fan wheel i carries two axially juxtaposed blade rings 3 .and , 3 ', the @sind housed in two by a wall 4 separated chambers. the blades 3, in Fig. i FROM drawn, are formed for promotion for clockwise rotation, the blades 3', in Fig. i drawn in dashed lines, for promotion 5 and 5 'are symmetrically arranged spiral casings, each of which is assigned to a blade system 3 or 3' of the fan. According to FIGS. 3 and 4, there is a 3 or 3 'system for each blade system Separate diffuser 6 or 6 ', adapted to each direction of rotation, is provided at the air outlet point. belongs to the guide apparatus 6 'drawn by a dashed line.

Je nach der Dreh;richfiung fördert im wesentlichen nur ,das eine Schaufelsystem, während das andere System jeweils leer mitläuft, also weder fördert noch auch ii.rgendlwelcihe größere Verluste durch Wirbelbildung u. dgl. verursacht.Depending on the direction of rotation, essentially only the one blade system, while the other system runs along idle, i.e. neither promotes nor otherwise major losses caused by vortex formation and the like.

Claims (1)

PATENTANSPRÜCHE: i. Lüfter für wechselnde Drehrichtung, insbesondere für elektrilsche Maschinen, mit Eiigenbefüftung,dadurch gekennzeichnet, daß er aus zwei axial nebeneinianderkeganden, vorzuigswei(se je in igetrennten Kammern untergebrachten Schaufelisystemen besteht, von denen das eine für die eine Drehrichtung, das andere für ,die andere Drehrichtung ausgebildet iiist. z. Lüfter nach Anspruch i, gekennzeichnet durch zwei voneinander getrennte Luftführungen beim Luftaustritt fürbei@de Schaufelsysteme, z. B. je ein Spiraligehäuse oder je einen Leitapparat, für Rechts- und für Linkslauf.PATENT CLAIMS: i. Fan for changing direction of rotation, in particular for electric machines, with self-ventilation, characterized in that it consists of two axially side-by-side kegands, each accommodated in separate chambers Schaufelisystemen consists, one of which for one direction of rotation, the other designed for the other direction of rotation. z. Fan according to claim i, characterized by two separate air ducts at the air outlet for @ de shovel systems, z. B. a spiral housing or a diffuser each, for clockwise and counterclockwise rotation.
DES12671D 1942-06-10 1942-06-10 Fan for changing directions of rotation Expired DE902298C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES12671D DE902298C (en) 1942-06-10 1942-06-10 Fan for changing directions of rotation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES12671D DE902298C (en) 1942-06-10 1942-06-10 Fan for changing directions of rotation

Publications (1)

Publication Number Publication Date
DE902298C true DE902298C (en) 1954-01-21

Family

ID=7474067

Family Applications (1)

Application Number Title Priority Date Filing Date
DES12671D Expired DE902298C (en) 1942-06-10 1942-06-10 Fan for changing directions of rotation

Country Status (1)

Country Link
DE (1) DE902298C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916997A (en) * 1956-04-09 1959-12-15 Sarl Johannes Freres Double-outlet centrifugal pump
US3099992A (en) * 1961-11-28 1963-08-06 Gen Motors Corp Reversible pump-motor assembly for a dishwasher
US3336876A (en) * 1964-10-07 1967-08-22 Siemen & Hinsch Gmbh Pump
DE1403836B1 (en) * 1959-12-30 1969-10-02 Gen Electric Valveless two-way centrifugal pump
US3773432A (en) * 1971-07-13 1973-11-20 Westinghouse Electric Corp Single stage bi-directional pump
FR2647511A1 (en) * 1989-05-25 1990-11-30 Velecta Ventilation Elect Appl Centrifugal fan having a reduced noise level

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916997A (en) * 1956-04-09 1959-12-15 Sarl Johannes Freres Double-outlet centrifugal pump
DE1403836B1 (en) * 1959-12-30 1969-10-02 Gen Electric Valveless two-way centrifugal pump
US3099992A (en) * 1961-11-28 1963-08-06 Gen Motors Corp Reversible pump-motor assembly for a dishwasher
US3336876A (en) * 1964-10-07 1967-08-22 Siemen & Hinsch Gmbh Pump
US3773432A (en) * 1971-07-13 1973-11-20 Westinghouse Electric Corp Single stage bi-directional pump
FR2647511A1 (en) * 1989-05-25 1990-11-30 Velecta Ventilation Elect Appl Centrifugal fan having a reduced noise level

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