EP0781927A1 - Apparatus for compressing gas or vapour media - Google Patents

Apparatus for compressing gas or vapour media Download PDF

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Publication number
EP0781927A1
EP0781927A1 EP96120458A EP96120458A EP0781927A1 EP 0781927 A1 EP0781927 A1 EP 0781927A1 EP 96120458 A EP96120458 A EP 96120458A EP 96120458 A EP96120458 A EP 96120458A EP 0781927 A1 EP0781927 A1 EP 0781927A1
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EP
European Patent Office
Prior art keywords
pressure chamber
rotary cylinder
inlet opening
housing
cover
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.)
Withdrawn
Application number
EP96120458A
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German (de)
French (fr)
Inventor
Peter Weisshaar
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0781927A1 publication Critical patent/EP0781927A1/en
Withdrawn legal-status Critical Current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
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/167—Operating by means of fibrous or porous elements, e.g. with sponge rotors
    • 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
    • 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

Definitions

  • the known compressors for larger delivery volumes which work on the basis of a turbomachine, either have a too low delivery head (e.g. fans) or at a medium delivery head, e.g. in the design as a gas ring or rotary piston compressor, only a small delivery rate or, with an even greater delivery head and delivery rate, are very complex to design and manufacture (screw compressors, turbo compressors), and also costly to maintain and repair.
  • a too low delivery head e.g. fans
  • a medium delivery head e.g. in the design as a gas ring or rotary piston compressor
  • Reciprocating compressors working according to the displacement principle have a large delivery head, but also only have a limited delivery volume, and they are also very complex to construct and expensive to maintain and repair.
  • the present invention is therefore based on the object of creating a device of the generic type which is of the simplest construction and can therefore be produced inexpensively.
  • the new device is suitable for oil-free compression of gases or vapors, equally with a small or large delivery head for small and also larger delivery volumes.
  • the through openings that form the perforation can be introduced very easily and inexpensively.
  • the generation of the high speed required for the rotary cylinder is also easily possible using frequency converters.
  • the medium is taken up by the rotating rotary cylinder regardless of its density, the medium subjecting itself to the circular movement.
  • the resulting specific mass flow depends on various factors. For example, the molecular weight of the gas or vapor to be compressed, the structure of the perforation, that is, the number and design of the through-openings forming the perforation, the thickness of the cylinder jacket, the speed of rotation and the differential pressure which arises in the steady state between the inside and outside of the rotating Rotation ring.
  • the rotation ring only heats up due to the existing friction. As a rule, however, the frictional heat is dissipated with the mass flow of the compressed gas or steam medium.
  • surface cooling of the chamber wall by means of air or water can also be provided. This is particularly the case when several devices are coupled together for a multi-stage compression.
  • the figure shows a device according to the invention in a sectional side view.
  • its basic structure consists of a housing 1 and a cover 10 with a connecting flange.
  • the interior of the housing 1 forms a high-pressure chamber 2, in which a rotary cylinder 3 is rotatably mounted. This is driven by a motor 7 arranged outside the housing 1. Alternatively, the motor 7 can also be integrated in the housing 1.
  • the outer surface of the rotary cylinder 3 is perforated uniformly over the entire circumference, the perforation being formed by radially arranged through bores 8 with a small diameter or through small openings.
  • the interior of the rotary cylinder 3 to the housing 1 or cover 10 takes place via a labyrinth seal 11. Via an inlet opening 5 of the cover 10 and an inlet opening 9 of the rotary cylinder 3, the gas or vapor medium to be compressed is passed into a low-pressure chamber formed by the interior of the rotary cylinder 3 4 led.
  • the gas molecules entering through the inlet opening 5 and the low-pressure line 9 are taken up by the rotating rotary cylinder 3 and are mostly transported to the outside through the perforation 8 by the centrifugal forces that occur in the radial direction.
  • the compressed medium can be discharged via an outlet opening 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The compressor has a rotating cylinder with its outer wall perforated (8). This wall separates the inner low pressure chamber (4) from an outer high pressure chamber (2). gas is drawn in via a central axial duct (5) and compressed gas is pumped out via a radial duct (6). The drive motor (7) is outside the pump housing and is directly connected to the rotating cylinder. The speed of rotation is controlled electronically. The seal between the high and low pressure chambers is provided by a labyrinth seal. The inlet port (9) of the cylinder is coaxial with the inlet duct in the pump housing.

Description

Die bekannten und auf der Basis einer Strömungsmaschine arbeitenden Verdichter für größere Fördervolumen, besitzen entweder eine zu geringe Förderhöhe (z.B. Ventilatoren) oder bei mittlerer Förderhöhe, z.B. in der Bauart als Gasring- oder Drehkolbenverdichter, eine nur geringe Fördermenge oder sind bei noch größerer Förderhöhe und -menge sehr aufwendig in der Konstruktion und Herstellung (Schraubenverdichter, Turboverdichter), ferner kostenaufwendig in Unterhalt und Reparatur.The known compressors for larger delivery volumes, which work on the basis of a turbomachine, either have a too low delivery head (e.g. fans) or at a medium delivery head, e.g. in the design as a gas ring or rotary piston compressor, only a small delivery rate or, with an even greater delivery head and delivery rate, are very complex to design and manufacture (screw compressors, turbo compressors), and also costly to maintain and repair.

Nach dem Verdrängerprinzip arbeitende Hubkolbenverdichter verfügen zwar über eine große Förderhöhe, besitzen jedoch ebenfalls nur ein begrenztes Fördervolumen, ferner sind auch sie sehr konstruktionsaufwendig und kostspielig in Unterhalt und Reparatur.Reciprocating compressors working according to the displacement principle have a large delivery head, but also only have a limited delivery volume, and they are also very complex to construct and expensive to maintain and repair.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der gattungsgemäßen Art zu schaffen, die konstruktiv einfachst aufgebaut und von daher kostengünstig herstellbar ist.The present invention is therefore based on the object of creating a device of the generic type which is of the simplest construction and can therefore be produced inexpensively.

Diese Aufgabe wird durch eine Vorrichtung gelöst, die die Merkmale des Anspruches 1 aufweist.This object is achieved by a device which has the features of claim 1.

Die neue Vorrichtung eignet sich für ein ölfreies Verdichten von Gasen oder Dämpfen, und zwar gleichermaßen bei kleiner oder auch großer Förderhöhe für kleine und auch größere Fördervolumen.The new device is suitable for oil-free compression of gases or vapors, equally with a small or large delivery head for small and also larger delivery volumes.

Aufgrund der einfachen Bauweise der Vorrichtung ist eine äußerst kostengünstige Herstellung möglich. Überdies hat sich gezeigt, daß gegenüber den bekannten Verdichtern die Lebensdauer bei gleichzeitig nur geringer Wartungsnotwendigkeit wesentlich erhöht ist, so daß sich insgesamt ein optimaler wirtschaftlicher Betrieb ergibt.Due to the simple construction of the device, extremely inexpensive manufacture is possible. In addition, it has been shown that, compared to the known compressors, the service life is significantly increased while at the same time requiring little maintenance, so that overall an optimal economical operation results.

Mit den heutigen Fertigungsmethoden (z.B. herkömmliches Bohrverfahren oder Laser-/Elektronenstrahlverfahren, Funkerosion und chemische bzw. elektrochemische Verfahren) sind die die Perforation bildenden Durchgangsöffnungen sehr einfach und kostengünstig einbringbar. Die Erzeugung der für den Rotationszylinder erforderlichen hohen Drehzahl ist über Frequenzumrichter ebenfalls problemlos möglich.With today's manufacturing methods (e.g. conventional drilling or laser / electron beam processes, radio erosion and chemical or electrochemical processes), the through openings that form the perforation can be introduced very easily and inexpensively. The generation of the high speed required for the rotary cylinder is also easily possible using frequency converters.

Technisch aufwendige, für hohe Drehzahlen ausgelegte gekühlte Gleitringdichtungen entfallen bei einer Verwendung einer Labyrinthabdichtung.Technically complex, cooled mechanical seals designed for high speeds are not required when using a labyrinth seal.

Beim Betrieb der Vorrichtung wird das Medium unabhängig von seiner Dichte von dem rotierenden Rotationszylinder aufgenommen, wobei das Medium sich der Kreisbewegung unterwirft.During operation of the device, the medium is taken up by the rotating rotary cylinder regardless of its density, the medium subjecting itself to the circular movement.

Hierdurch wandern mehrheitlich Gas-/Dampfmoleküle durch die Perforation von der Innenseite auf die äußere Mantelseite des Rotationszylinders, wobei der Durchgang in radialer Richtung erfolgt.As a result, the majority of the gas / steam molecules migrate through the perforation from the inside to the outside jacket side of the rotary cylinder, the passage taking place in the radial direction.

Der vermehrte Austritt der Gas- oder Dampfmolküle auf der Außenseite des rotierenden Rotationszylinders führt in der angrenzenden Kammer zu einer Druckerhöhung, so daß sich dadurch eine Verdichtung ergibt.The increased outlet of the gas or steam molecule on the outside of the rotating rotary cylinder leads to an increase in pressure in the adjacent chamber, so that compression results.

Der sich ergebende spezifische Massenstrom ist von unterschiedlichen Faktoren abhängig. Beispielsweise vom Molekulargewicht des zu verdichtenden Gases oder Dampfes, von der Struktur der Perforation, d.h. von der Anzahl und der Ausbildung der die Perforation bildenden Durchgangsöffnungen, der Dicke des Zylindermantels, der Rotationsgeschwindigkeit sowie dem sich im Beharrungszustand einstellenden Diffrenzdruck zwischen Innen- und Außenseite des rotierenden Rotationsringes.The resulting specific mass flow depends on various factors. For example, the molecular weight of the gas or vapor to be compressed, the structure of the perforation, that is, the number and design of the through-openings forming the perforation, the thickness of the cylinder jacket, the speed of rotation and the differential pressure which arises in the steady state between the inside and outside of the rotating Rotation ring.

Die kinetische Energie der auf der Innen- und Außenseite des rotierenden Rotationsringes ein- bzw. austretenden Gas- oder Dmapfmoleküle hebt sich in ihrer Summe auf, so daß hierdurch keine unkontrollierte Temperaturveränderung des Rotationsringmaterials erfolgt.The sum of the kinetic energy of the gas or steam molecules entering or exiting on the inside and outside of the rotating rotation ring is canceled out, so that this does not result in an uncontrolled temperature change in the rotation ring material.

Eine Erwärmung des Rotationsringes tritt lediglich durch die vorhandene Reibung auf. Im Regelfall wird jedoch die Reibungswärme mit dem Massenstrom des verdichteten Gas- oder Dampfmediums abgeführt.The rotation ring only heats up due to the existing friction. As a rule, however, the frictional heat is dissipated with the mass flow of the compressed gas or steam medium.

Im Bedarfsfall kann aber auch eine Oberflächenkühlung der Kammerwandung mittels Luft oder Wasser vorgesehen sein. Dies inbesondere dann, wenn mehrere Vorrichtungen für eine mehrstufige Verdichtung miteinander gekoppelt sind.If necessary, surface cooling of the chamber wall by means of air or water can also be provided. This is particularly the case when several devices are coupled together for a multi-stage compression.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der beigefügten Zeichnung beschrieben.An embodiment of the invention is described below with reference to the accompanying drawings.

Die Figur zeigt eine erfindungsgemäße Vorrichtung in einer geschnittenen Seitenansicht.The figure shows a device according to the invention in a sectional side view.

In dargestellte Vorrichtung zum Verdichten von gas- oder dampfförmigen Medien besteht in ihrem Grundaufbau aus einem Gehäuse 1 und aus einem Deckel 10 mit Anschlußflansch.In the illustrated device for compressing gaseous or vaporous media, its basic structure consists of a housing 1 and a cover 10 with a connecting flange.

Der Innenraum des Gehäuses 1 bildet eine Hochdruckkammer 2, in der ein Rotationszylinder 3 drehbar gelagert ist. Dieser wird über einen außerhalb des Gehäuses 1 angeordneten Motor 7 angetrieben. Alternativ kann der Motor 7 auch im Gehäuse 1 integriert sein.The interior of the housing 1 forms a high-pressure chamber 2, in which a rotary cylinder 3 is rotatably mounted. This is driven by a motor 7 arranged outside the housing 1. Alternatively, the motor 7 can also be integrated in the housing 1.

Die Mantelfläche des Rotationszylinders 3 ist über den gesamten Umfang gleichmäßig perforiert, wobei die Perforation durch radial angeordnete Durchgangsbohrungen 8 mit kleinem Durchmesser oder durch kleine Öffnungen gebildet wird.The outer surface of the rotary cylinder 3 is perforated uniformly over the entire circumference, the perforation being formed by radially arranged through bores 8 with a small diameter or through small openings.

Das Innere des Rotationszylinders 3 zum Gehäuse 1 bzw. Deckel 10 erfolgt über eine Labyrinthdichtung 11. Über eine Eintrittsöffnung 5 des Deckels 10 und eine Einlaßöffnung 9 des Rotationszylinders 3 wird das zu verdichtende Gas- oder Dampfmedium in eine durch den Innenraum des Rotationszylinders 3 gebildete Niederdruckkammer 4 geführt.The interior of the rotary cylinder 3 to the housing 1 or cover 10 takes place via a labyrinth seal 11. Via an inlet opening 5 of the cover 10 and an inlet opening 9 of the rotary cylinder 3, the gas or vapor medium to be compressed is passed into a low-pressure chamber formed by the interior of the rotary cylinder 3 4 led.

Bei einem Betrieb der Vorrichtung werden die durch die Eintrittsöffnung 5 und die Niederdruckleitung 9 eintretenden Gasmoleküle vom rotierenden Rotationszylinder 3 aufgenommen und durch die auftretenden Fliehkräfte in radialer Richtung mehrheitlich durch die Perforation 8 nach außen transportiert.When the device is in operation, the gas molecules entering through the inlet opening 5 and the low-pressure line 9 are taken up by the rotating rotary cylinder 3 and are mostly transported to the outside through the perforation 8 by the centrifugal forces that occur in the radial direction.

An der Außenfläche des Rotationszylinders 3 treten sie aus, wobei sich zwischen der Niederdruckkammer 4 und der Hochdruckkammer 2 ein Differenzdruck einstellt. Über eine Austrittsöffnung 6 kann das verdichtete Medium abgeführt werden.They emerge on the outer surface of the rotary cylinder 3, a differential pressure being established between the low-pressure chamber 4 and the high-pressure chamber 2. The compressed medium can be discharged via an outlet opening 6.

BezugszeichenlisteReference list

11
Gehäusecasing
22nd
HochdruckkammerHigh pressure chamber
33rd
RotationszylinderRotary cylinder
44th
NiederdruckkammerLow pressure chamber
55
EintrittsöffnungEntrance opening
66
AustrittsöffnungOutlet opening
77
Motorengine
88th
DurchgangsöffnungThrough opening
99
EinlaßöffnungInlet opening
1010th
Deckelcover
1111
LabyrinthdichtungLabyrinth seal

Claims (7)

Vorrichtung zum Verdichten von gas- oder dampfförmigen Medien, dadurch gekennzeichnet, daß in einer gegenüber dem Umgebungsdruck abgedichteten Hochdruckkammer (2) ein Rotationszylinder (3) angeordnet ist, der eine zumindest teilweise perforierte Außenfläche aufweist und mit seinem eine Niederdruckkammer (4) bildenden Innenraum an eine Eintrittsöffnung (5) angeschlossen ist, während die Hochdruckkammer (2) über eine Austrittsöffnung (6) mit einer Hochdruckleitung verbunden ist.Device for compressing gaseous or vaporous media, characterized in that a rotary cylinder (3) is arranged in a high-pressure chamber (2) sealed from the ambient pressure, which has an at least partially perforated outer surface and with its interior forming a low-pressure chamber (4) an inlet opening (5) is connected, while the high pressure chamber (2) is connected to a high pressure line via an outlet opening (6). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Perforation aus einer Vielzahl von auf der Mantelfläche des Rotationszylinders (3) gleichmäßig angeordneten, radial verlaufenden Durchgangsöffnungen (8) gebildet wird.Apparatus according to claim 1, characterized in that the perforation is formed from a plurality of radially extending through openings (8) arranged uniformly on the lateral surface of the rotating cylinder (3). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Hochdruckkammer (2) von einem Gehäuse (1) umschlossen wird, mit dem ein Deckel (10) verbunden ist, der die Niederdruckkammer (4) begrenzt, wobei diese und die Hochdruckkammer (2) druckdicht voneinander getrennt sind.Device according to claim 1, characterized in that the high-pressure chamber (2) is enclosed by a housing (1) to which a cover (10) is connected, which delimits the low-pressure chamber (4), the latter and the high-pressure chamber (2) being pressure-tight are separated from each other. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß ein Motor (7) zum Antrieb des Rotationszylinders (3) außenseitig an dem Gehäuse (1) befestigt ist.Apparatus according to claim 3, characterized in that a motor (7) for driving the rotating cylinder (3) is attached to the outside of the housing (1). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß zur Abdichtung des Rotationszylinders (3) und des Gehäuses (1) bzw. des Deckels (10) Labyrinthdichtungen vorgesehen sind.Apparatus according to claim 3, characterized in that labyrinth seals are provided for sealing the rotary cylinder (3) and the housing (1) or the cover (10). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Eintrittsöffnung (5) im Deckel (10) angeordnet ist.Device according to claim 1, characterized in that the inlet opening (5) is arranged in the cover (10). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Rotationszylinder eine Einlaßöffnung (9) aufweist, in die die Eintrittsöffnung (5) mündet.Device according to claim 1, characterized in that the rotary cylinder has an inlet opening (9) into which the inlet opening (5) opens.
EP96120458A 1995-12-27 1996-12-19 Apparatus for compressing gas or vapour media Withdrawn EP0781927A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995148833 DE19548833A1 (en) 1995-12-27 1995-12-27 Device for compressing gaseous or vaporous media
DE19548833 1995-12-27

Publications (1)

Publication Number Publication Date
EP0781927A1 true EP0781927A1 (en) 1997-07-02

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ID=7781487

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EP96120458A Withdrawn EP0781927A1 (en) 1995-12-27 1996-12-19 Apparatus for compressing gas or vapour media

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EP (1) EP0781927A1 (en)
JP (1) JPH09195981A (en)
DE (2) DE19548833A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005094968A1 (en) * 2004-03-25 2005-10-13 Owens Corning Rotary separator for mineral fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104421164B (en) * 2013-08-20 2018-04-27 李刚 Rotary type universal fluid compressing device and application

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204863C (en) *
US2433795A (en) * 1945-08-18 1947-12-30 Westinghouse Electric Corp Fan
GB905473A (en) * 1960-05-18 1962-09-12 Heat Pump & Refrigeration Ltd Improvements in or relating to impellers
FR2109825A5 (en) * 1970-10-14 1972-05-26 Buderus Eisenwerk
FR2178689A5 (en) * 1972-03-29 1973-11-09 Siemens Ag
AU4830672A (en) * 1972-11-05 1975-02-06 Celi S Fan rotors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1769260A (en) * 1926-09-22 1930-07-01 Burton S Hughes Centrifugal compressor
DE2111914A1 (en) * 1971-03-12 1972-09-14 Buderus Eisenwerk Fan
DE2421420A1 (en) * 1974-05-03 1975-11-13 Euras Elekt Forsch & Prod Pumping or flow maintaining system - has wheels with perforated side walls to induce the liquid flow
DE4122185A1 (en) * 1991-07-04 1993-01-07 Peter Richard Labentz Translatory motion device for space craft - has rotated disc with spiral structures in both surface and spiral arms rotated by translation medium

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204863C (en) *
US2433795A (en) * 1945-08-18 1947-12-30 Westinghouse Electric Corp Fan
GB905473A (en) * 1960-05-18 1962-09-12 Heat Pump & Refrigeration Ltd Improvements in or relating to impellers
FR2109825A5 (en) * 1970-10-14 1972-05-26 Buderus Eisenwerk
FR2178689A5 (en) * 1972-03-29 1973-11-09 Siemens Ag
AU4830672A (en) * 1972-11-05 1975-02-06 Celi S Fan rotors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005094968A1 (en) * 2004-03-25 2005-10-13 Owens Corning Rotary separator for mineral fibers
US7264422B2 (en) 2004-03-25 2007-09-04 Owens-Corning Fiberglas Technology Inc. Rotary separator for mineral fibers
CN100467096C (en) * 2004-03-25 2009-03-11 欧文斯科宁知识产权资产有限公司 Rotary separator for mineral fibers
AU2005228991B2 (en) * 2004-03-25 2010-04-15 Owens Corning Intellectual Capital, Llc Rotary separator for mineral fibers
US8701446B2 (en) 2004-03-25 2014-04-22 Owens Corning Intellectual Capital, Llc Rotary separator for mineral fibers

Also Published As

Publication number Publication date
DE19548833A1 (en) 1997-07-03
DE19607616A1 (en) 1997-09-11
JPH09195981A (en) 1997-07-29

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