[go: up one dir, main page]

EP0722045B1 - Compressor assembly - Google Patents

Compressor assembly Download PDF

Info

Publication number
EP0722045B1
EP0722045B1 EP95120257A EP95120257A EP0722045B1 EP 0722045 B1 EP0722045 B1 EP 0722045B1 EP 95120257 A EP95120257 A EP 95120257A EP 95120257 A EP95120257 A EP 95120257A EP 0722045 B1 EP0722045 B1 EP 0722045B1
Authority
EP
European Patent Office
Prior art keywords
housing
halves
housing halves
compressor unit
side channel
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 - Lifetime
Application number
EP95120257A
Other languages
German (de)
French (fr)
Other versions
EP0722045A1 (en
Inventor
Peter Fisher
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0722045A1 publication Critical patent/EP0722045A1/en
Application granted granted Critical
Publication of EP0722045B1 publication Critical patent/EP0722045B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid 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
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps

Definitions

  • the invention relates to a compressor unit according to the preamble of claim 1.
  • Such a compressor unit is known from DE-U-92 15 231, EP-A-0 351 372 and FR-A-2 294 114 known.
  • the compressor unit known from DE-U-9 215 231 is radially outside a centering edge of the housing area forming the side channel provided on the individual housing halves.
  • the side channel blowers are aggregated by the respective internal housing halves, which with their centering edges interlock, centered to each other.
  • the connection the one belonging to a side channel blower Housing halves are made on the outer circumference of these housing halves provided connecting tabs, in the connecting screws are introduced.
  • the connecting straps are adjacent the inner parting plane of the two housing halves.
  • the invention has for its object a compressor unit of the generic type so that both Side channel blowers with the same housing diameters as also with different housing diameters Compressor unit can be summarized.
  • the task is solved by the im Characteristics of claim 1 specified features.
  • the side channel blowers belonging to an aggregate are theirs
  • the basic structure of the housing halves is identical.
  • the one necessary for one outer half of the housing Stock taking can be made using an appropriate, interchangeable Mold insert can be achieved in the mold.
  • a technically identical design of all halves of the housing side channel compressors that can be joined together to form a compressor unit is made possible by the fact that in all housing halves the axial approach on the same radius as that for the Coupling the respective outer housing half to the Housing of the drive motor of the compressor unit necessary Axial approach lies.
  • each side channel blower 1 or 2 consists of an outer housing half 3 and an inner housing half 4.
  • the housing halves 3 and 4 enclose the impeller 5 in the assembled state of the side channel compressor 1 or 2.
  • each housing half 3 or 4 there is between one the axial shaft hub surrounding the drive shaft 6 of the impellers 5 7 and the one forming the respective side channel 8 Bulge 9 extending housing wall 10 an axial shoulder 11th molded.
  • the axial lugs 11 of the two inner housing halves 4 serve to connect these two housing halves 4. Therefore, the axial shoulder 11 of the one housing half 4 Through holes 12 and the axial approach 11 of the other Provide housing half 4 with threaded holes 13. Consequently can the two inner housing halves 3 by means of screws 14 are connected.
  • the axial approach 11 can be as circumferential ring can be formed or from individual There are protrusions.
  • Axial extension 11 is used to attach the compressor unit on the housing of the drive motor 15.
  • Threaded holes 13 are provided so that the outer housing half 3 of the first side channel compressor 1 by means of connecting screws 16 can be attached to the motor housing.
  • the connection of the outer housing half 3 of the second Side channel compressor 2 takes place in on the outer circumference of all Housing halves 3 and 4 provided through openings 19 inserted clamping bolts 18.
  • the clamping bolts 18 extend axially over all housing halves 3 and 4 and thus pose an additional fastening element for all housing halves 3 and 4.
  • a support ring 20 is provided radially adjacent. For reasons of equality is this support ring 20 on each housing half 3 or 4 molded.
  • the support rings 20 are regarding their axial extension so dimensioned that the two inner housing halves 4 provided support rings 20 in connected state of the inner housing halves 2 to each other issue. So there is no warping of the case of the two Side channel compressors 1 and 2 when attaching the clamping bolts 18 possible.
  • the axial approaches are in all housing halves 3 and 4 regardless of whether they are used Connection of the housing halves 4 to each other or to Connect the compressor unit to the drive motor 15 serve on the same radius. This is the same training all housing halves 3 and 4 from their casting Execution given here.
  • the bearing holder 17 in one outer housing half 3 can by a corresponding, in the mold insertable, replaceable mold insert reached become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The compressor unit uses at least two side channel compressors (1,2) mounted axially side-by-side, each having a compressor housing which is formed in two halves (3,4), with bores in their outer periphery receiving coupling elements (18). The housing wall (10) of each housing half extending between the axial hub (7) and the side channel part of the housing has an axial projection (11), extending up to the separation plane of the housing halves, for cooperating with a centring pin (21) extending across this plane. The inner housing halves (4) of the adjacent compressors are coupled together and the outer housing halves (3) are coupled to the inner housing halves.

Description

Die Erfindung bezieht sich auf ein Verdichteraggregat gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a compressor unit according to the preamble of claim 1.

Ein solches Verdichteraggregat ist aus DE-U-92 15 231, EP-A- 0 351 372 und FR-A- 2 294 114 bekannt. Bei dem aus DE-U- 9 215 231 bekannten Verdichteraggregat ist radial außerhalb des den Seitenkanal bildenden Gehäusebereiches ein Zentrierrand an den einzelnen Gehäusehälften vorgesehen. Beim Zusammenbau der einzelnen Seitenkanalverdichter zu einem Aggregat werden die Seitenkanalverdichter durch die jeweils innenliegenden Gehäusehälften, welche mit ihren Zentrierrändern ineinandergreifen, zueinander zentriert. Die Verbindung der jeweils zu einem Seitenkanalverdichter gehörenden Gehäusehälften erfolgt über am Außenumfang dieser Gehäusehälften vorgesehene Verbindungslaschen, in die Verbindungsschrauben eingebracht sind. Die Verbindungslaschen grenzen an die innere Trennebene der beiden Gehäusehälften. Für die Verbindung der Seitenkanalverdichter selbst sind am Außenumfang der einander zugewandten Gehäusehälften dieser Seitenkanalverdichter an die äußere Trennebene dieser Gehäusehälften angrenzende Verbindungslaschen vorgesehen, in die ebenfalls Verbindungsschrauben eingebracht sind. Bei einer solchen Verbindungsart können nur Verdichter mit gleichen Außenabmessungen miteinander zu einem Aggregat vereint werden.Such a compressor unit is known from DE-U-92 15 231, EP-A-0 351 372 and FR-A-2 294 114 known. In the compressor unit known from DE-U-9 215 231 is radially outside a centering edge of the housing area forming the side channel provided on the individual housing halves. At the Assembly of the individual side channel blowers into one The side channel blowers are aggregated by the respective internal housing halves, which with their centering edges interlock, centered to each other. The connection the one belonging to a side channel blower Housing halves are made on the outer circumference of these housing halves provided connecting tabs, in the connecting screws are introduced. The connecting straps are adjacent the inner parting plane of the two housing halves. For the Connection of the side channel blowers themselves are on the outer circumference the mutually facing housing halves of these side channel blowers to the outer parting plane of these housing halves adjacent connecting straps provided in the connecting screws are also inserted. At a Only compressors with the same type of connection can be used External dimensions combined into one unit become.

Der Erfindung liegt die Aufgabe zugrunde, ein Verdichteraggregat der gattungsgemäßen Art so umzugestalten, daß sowohl Seitenkanalverdichter mit gleichen Gehäusedurchmessern als auch mit unterschiedlichen Gehäusedurchmessern zu einem Verdichteraggregat zusammengefaßt werden können.The invention has for its object a compressor unit of the generic type so that both Side channel blowers with the same housing diameters as also with different housing diameters Compressor unit can be summarized.

Die Lösung der gestellten Aufgabe gelingt durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale. Bei gleicher Baugröße der zu einem Aggregat gehörenden Seitenkanalverdichter sind deren Gehäusehälften von ihrer Grundstruktur her gleich ausgebildet. Die bei der einen äußeren Gehäusehälfte notwendige Lageraufnahme kann mittels eines entsprechenden, austauschbaren Formeinsatzes in der Gußform erzielt werden.The task is solved by the im Characteristics of claim 1 specified features. With the same size the side channel blowers belonging to an aggregate are theirs The basic structure of the housing halves is identical. The one necessary for one outer half of the housing Stock taking can be made using an appropriate, interchangeable Mold insert can be achieved in the mold.

Infolge der Zentrierung der Seitenkanalverdichter über die an der sich zwischen dem axialen Nabenansatz und der Seitenkanalausbuchtung erstreckenden Gehäusewand vorgesehenen Axialansätze ist auch der Zusammenbau von Seitenkanalverdichtern mit unterschiedlichen Gehäusedurchmessern zu einem Verdichteraggregat möglich. Es müssen bei den einzelnen Seitenkanalverdichtern lediglich die Axialansätze mit dem gleichen Durchmesser ausgeführt werden. Dies ist im Rahmen des zwischen dem axialen Nabenansatz und der Gehäuseausbuchtung für den Seitenkanal zur Verfügung stehenden Platzes möglich.As a result of Centering the side channel blower over the at the between the axial hub shoulder and the side channel bulge extending housing wall is provided axial approaches also the assembly of side channel blowers with different Housing diameters for a compressor unit possible. It must be with the individual side channel compressors only the axial approaches with the same diameter become. This is within the between the axial Hub approach and the housing bulge for the side channel available space possible.

Beim Verbinden der Seitenkanalverdichter zu einem Verdichteraggregat wird ein Verziehen der Gehäuseteile dadurch vermieden, daß zu den Verbindungselementen radial benachbart zumindest an den inneren Gehäusehälften bis in die Gehäusetrennebene ragende, axial ausgerichtete Abstützelemente vorgesehen sind. Dabei kann vorteilhafterweise ein umlaufender Abstützring an den Gehäusehälften ausgebildet sein.When connecting the side channel blowers to a compressor unit this will warp the housing parts avoided that radially adjacent to the connecting elements at least on the inner housing halves up to the housing parting plane projecting, axially aligned support elements are provided are. It can advantageously be a rotating one Support ring to be formed on the housing halves.

Eine gußtechnisch gleiche Ausbildung aller Gehäusehälften von zu einem Verdichteraggregat zusammenfügbaren Seitenkanalverdichtern wird dadurch ermöglicht, daß bei allen Gehäusehälften der Axialansatz auf dem gleichen Radius wie der für die Ankoppelung der jeweiligen äußeren Gehäusehälfte an das Gehäuse des Antriebsmotors des Verdichteraggregates notwendiger Axialansatz liegt.A technically identical design of all halves of the housing side channel compressors that can be joined together to form a compressor unit is made possible by the fact that in all housing halves the axial approach on the same radius as that for the Coupling the respective outer housing half to the Housing of the drive motor of the compressor unit necessary Axial approach lies.

Anhand eines in der Zeichnung als Ausführungsbeispiel dargestellten, aus zwei Seitenkanalverdichtern bestehenden Verdichteraggregates wird die Erfindung nachfolgend näher beschrieben. Using an exemplary embodiment shown in the drawing, consisting of two side channel blowers Compressor unit, the invention is closer below described.

Mit 1 ist ein erster und mit 2 ein zweiter Seitenkanalverdichter bezeichnet. Das Gehäuse jedes Seitenkanalverdichters 1 bzw.2 besteht aus einer äußeren Gehäusehälfte 3 und einer inneren Gehäusehälfte 4. Die Gehäusehälften 3 und 4 umschließen im zusammengebauten Zustand jeweils das Laufrad 5 des Seitenkanalverdichters 1 bzw.2.With 1 is a first and with 2 a second side channel blower designated. The housing of each side channel blower 1 or 2 consists of an outer housing half 3 and an inner housing half 4. The housing halves 3 and 4 enclose the impeller 5 in the assembled state of the side channel compressor 1 or 2.

An jeder Gehäusehälfte 3 bzw.4 ist an der sich zwischen einem die Antriebswelle 6 der Laufräder 5 umgebenden axialen Nabenansatz 7 und der den jeweiligen Seitenkanal 8 bildenden Ausbuchtung 9 erstreckenden Gehäusewand 10 ein Axialansatz 11 angeformt. Die Axialansätze 11 der beiden inneren Gehäusehälften 4 dienen zum Verbinden dieser beiden Gehäusehälften 4. Daher ist der Axialansatz 11 der einen Gehäusehälfte 4 mit Durchsteckbohrungen 12 und der Axialansatz 11 der anderen Gehäusehälfte 4 mit Gewindebohrungen 13 versehen. Somit können die beiden inneren Gehäusehälften 3 mittels Schrauben 14 miteinander verbunden werden. Der Axialansatz 11 kann als umlaufender Ring ausgebildet sein oder auch aus einzelnen Vorsprüngen bestehen.On each housing half 3 or 4 there is between one the axial shaft hub surrounding the drive shaft 6 of the impellers 5 7 and the one forming the respective side channel 8 Bulge 9 extending housing wall 10 an axial shoulder 11th molded. The axial lugs 11 of the two inner housing halves 4 serve to connect these two housing halves 4. Therefore, the axial shoulder 11 of the one housing half 4 Through holes 12 and the axial approach 11 of the other Provide housing half 4 with threaded holes 13. Consequently can the two inner housing halves 3 by means of screws 14 are connected. The axial approach 11 can be as circumferential ring can be formed or from individual There are protrusions.

Der an der zum Antriebsmotor 15 gewandten äußeren Gehäusehälfte 3 des ersten Seitenkanalverdichters 1 vorgesehene Axialansatz 11 dient zum Befestigen des Verdichteraggregates am Gehäuse des Antriebsmotors 15. Hierzu sind in dem Axialansatz 11 wiederum Durchsteckbohrungen 12 und im Motorgehäuse Gewindebohrungen 13 vorgesehen, so daß die äußere Gehäusehälfte 3 des ersten Seitenkanalverdichters 1 mittels Verbindungsschrauben 16 am Motorgehäuse befestigt werden kann.The on the outer housing half facing the drive motor 15 3 of the first side channel compressor 1 provided Axial extension 11 is used to attach the compressor unit on the housing of the drive motor 15. For this purpose, in the axial approach 11 in turn through holes 12 and in the motor housing Threaded holes 13 are provided so that the outer housing half 3 of the first side channel compressor 1 by means of connecting screws 16 can be attached to the motor housing.

An der äußeren Gehäusehälfte 3 des zweiten Seitenkanalverdichters 2 ist eine Lageraufnahme 17 vorgesehen, in der die Antriebswelle 6 mit ihrem freien Ende gelagert ist. Aus Gleichheitsgründen ist auch bei dieser Gehäusehälfte 3 ein Axialansatz 11 vorhanden, der hier jedoch keine weitere Funktion hat. On the outer housing half 3 of the second side channel blower 2, a bearing receptacle 17 is provided, in which the Drive shaft 6 is supported with its free end. Out Equality is also in this case half 3 Axial approach 11 available, but here no further Function.

Die Verbindung der äußeren Gehäusehälfte 3 des zweiten Seitenkanalverdichters 2 erfolgt über in am Außenumfang aller Gehäusehälften 3 und 4 vorgesehene Durchstecköffnungen 19 eingesteckte Spannbolzen 18. Die Spannbolzen 18 erstrecken sich axial über alle Gehäusehälften 3 und 4 und stellen somit ein zusätzliches Befestigungselement für alle Gehäusehälften 3 und 4 dar. Um ein Verziehen der Gehäusehälften 3 und 4 durch die radial außen an diesen angreifenden Spannbolzen 18 zu vermeiden, ist an der Außenseite der Gehäusehälften 3 und 4 zu den Spannbolzen 18 bzw. zu den Durchstecköffnungen 19 radial benachbart ein Abstützring 20 vorgesehen. Aus Gleichheitsgründen ist dieser Abstützring 20 an jeder Gehäusehälfte 3 bzw.4 angeformt. Die Abstützringe 20 sind hinsichtlich ihrer axialen Erstreckung so bemessen, daß die an den beiden inneren Gehäusehälften 4 vorgesehenen Abstützringe 20 im verbundenen Zustand der inneren Gehäusehälften 2 aneinander anliegen. Damit ist kein Verziehen der Gehäuse der beiden Seitenkanalverdichter 1 und 2 beim Anbringen der Spannbolzen 18 möglich.The connection of the outer housing half 3 of the second Side channel compressor 2 takes place in on the outer circumference of all Housing halves 3 and 4 provided through openings 19 inserted clamping bolts 18. The clamping bolts 18 extend axially over all housing halves 3 and 4 and thus pose an additional fastening element for all housing halves 3 and 4. To warp the housing halves 3 and 4 by the clamping bolts 18 acting radially on the outside thereof To avoid is on the outside of the housing halves 3 and 4 to the clamping bolts 18 or to the push-through openings 19 A support ring 20 is provided radially adjacent. For reasons of equality is this support ring 20 on each housing half 3 or 4 molded. The support rings 20 are regarding their axial extension so dimensioned that the two inner housing halves 4 provided support rings 20 in connected state of the inner housing halves 2 to each other issue. So there is no warping of the case of the two Side channel compressors 1 and 2 when attaching the clamping bolts 18 possible.

Beim Anbau der inneren Gehäusehälfte 4 des zweiten Seitenkanalverdichters 2 an die innere Gehäusehälfte 4 des ersten Seitenkanalverdichters 1 erfolgt die Ausrichtung dieser beiden Gehäusehälften 4 mittels eines an dem Axialansatz 11 der einen inneren Gehäusehälfte 4 vorgesehenen Zentrierrandes 21, der in einen am Axialansatz 11 der anderen inneren Gehäusehälfte 4 ausgebildeten Zentrierabsatz 22 eingreift. Desgleichen erfolgt die Zentrierung der äußeren Gehäusehälfte 3 des ersten Seitenkanalverdichters 1 am Motorgehäuse mittels eines am Axialansatz 11 dieser Gehäusehälfte 3 vorgesehenen Zentrierrandes 21 der in einen entsprechenden Zentrierabsatz 22 des Motorgehäuses eingreift.When installing the inner housing half 4 of the second side channel blower 2 to the inner housing half 4 of the first Side channel compressor 1 is aligned two housing halves 4 by means of one on the axial shoulder 11 an inner housing half 4 provided centering 21, the one in the axial approach 11 of the other inner Housing half 4 trained centering shoulder 22 engages. Likewise, the outer half of the housing is centered 3 of the first side channel compressor 1 on the motor housing one provided on the axial shoulder 11 of this housing half 3 Centering edge 21 in a corresponding centering paragraph 22 engages the motor housing.

Wie aus der Zeichnung ersichtlich, liegen die Axialansätze bei allen Gehäusehälften 3 und 4 unabhängig davon, ob sie zur Verbindung der Gehäusehälften 4 untereinander oder zum Verbinden des Verdichteraggregates mit dem Antriebsmotor 15 dienen auf gleichem Radius. Damit ist eine gleiche Ausbildung aller Gehäusehälften 3 und 4 von ihrer gußtechnischen Ausführung her gegeben. Die Lageraufnahme 17 bei der einen äußeren Gehäusehälfte 3 kann durch einen entsprechenden, in die Gußform einfügbaren, austauschbaren Formeinsatz erreicht werden.As can be seen from the drawing, the axial approaches are in all housing halves 3 and 4 regardless of whether they are used Connection of the housing halves 4 to each other or to Connect the compressor unit to the drive motor 15 serve on the same radius. This is the same training all housing halves 3 and 4 from their casting Execution given here. The bearing holder 17 in one outer housing half 3 can by a corresponding, in the mold insertable, replaceable mold insert reached become.

Claims (4)

  1. A compressor unit, comprising at least two side-channel compressors (1 and 2) disposed in axially adjacent manner, each comprising a housing having at least an inner (4) and an outer (3) housing half, which can be connected to one another by attachment elements (18) which can be introduced into passthrough openings (19) on the outer periphery of the housing halves, and the outer housing halves (3) are connected to the inner housing halves (4) by means of the attachment elements (18) introduced into the passthrough openings (19), characterised in that an axial extension (11) is provided both on the inner and on the outer housing half (3, 4), on the housing wall (10) extending between an axially extending hub extension (7) and the housing protrusion (9) produced by the side channel (8), the axial extension (11) lies on the same radius at least in the two facing housing halves (4) of the side-channel compressors (1 and 2) which are to be connected, extends into the parting plane of the adjoining housing halves (3, 4) and is provided in each case with a centring rim (21), which projects beyond the parting plane and fits together with a centring step (22) provided on the axial extension (11) of the adjacent housing half (4) and set back relative to the parting plane, and the inner housing halves (4) are connected to one another at the axial extensions (11).
  2. A compressor unit according to claim 1,
    characterised in that axially oriented bracing elements (20) are provided, which project into the housing parting plane at least at the inner housing halves (4) and are arranged radially adjacent to the attachment elements (18).
  3. A compressor unit according to claim 2,
    characterised in that the bracing elements are constructed as a circumferential bracing ring (20).
  4. A compressor unit according to one of the preceding claims, characterised in that, in all housing halves (3 and 4), the axial extension (11) lies on the same radius as the axial extension (11) required for the coupling of the respective outer housing half (3) to the housing of the drive motor (15) of the compressor unit.
EP95120257A 1995-01-05 1995-12-21 Compressor assembly Expired - Lifetime EP0722045B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19500469 1995-01-05
DE19500469 1995-01-05

Publications (2)

Publication Number Publication Date
EP0722045A1 EP0722045A1 (en) 1996-07-17
EP0722045B1 true EP0722045B1 (en) 1999-03-10

Family

ID=7751196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120257A Expired - Lifetime EP0722045B1 (en) 1995-01-05 1995-12-21 Compressor assembly

Country Status (5)

Country Link
US (1) US5591000A (en)
EP (1) EP0722045B1 (en)
JP (1) JP3243163B2 (en)
AT (1) ATE177514T1 (en)
DE (1) DE59505293D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7278396A (en) * 1995-09-15 1997-04-01 Siemens Aktiengesellschaft Housing for a side channel compressor
KR100413789B1 (en) 1999-11-01 2003-12-31 삼성전자주식회사 High vacuum packaging microgyroscope and manufacturing method thereof
IT202000014818A1 (en) * 2020-06-19 2021-12-19 M Pumps Process Srl MULTISTAGE REGENERATIVE COMPRESSOR

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7441311U (en) * 1974-12-11 1976-07-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen COMPRESSOR ARRANGEMENT
DE2721233C2 (en) * 1977-05-11 1979-02-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Side channel compressor consisting of several compressor stages
DE2738208B1 (en) * 1977-08-24 1978-05-11 Siemens Ag Side channel blower
US4299536A (en) * 1979-08-09 1981-11-10 Roy E. Roth Company Multi-stage pumps
JPS62186095A (en) * 1986-02-07 1987-08-14 Nikoku Kikai Kogyo Kk Multistage vortex pump
IT1225173B (en) * 1988-07-15 1990-11-02 Esam Spa VOLUMETRIC ROTARY SUCTION-BLOWER MACHINE
DE9215231U1 (en) * 1992-11-09 1994-03-10 Siemens AG, 80333 München Compressor unit

Also Published As

Publication number Publication date
JPH08232886A (en) 1996-09-10
US5591000A (en) 1997-01-07
ATE177514T1 (en) 1999-03-15
DE59505293D1 (en) 1999-04-15
JP3243163B2 (en) 2002-01-07
EP0722045A1 (en) 1996-07-17

Similar Documents

Publication Publication Date Title
EP1649575B1 (en) Electric machine with rotor cooling
EP0317946B1 (en) Axial magnetic bearing
DE3443485A1 (en) FLEXIBLE ALL-STEEL COUPLING
DE10001635B4 (en) Centrifugal separator
DE2357764A1 (en) ROTOR FOR FLOW MACHINE
DE602004013093T2 (en) Aircraft brake assembly
DE2644273C3 (en) Sealing arrangement for a split vehicle wheel rim
EP0636217B1 (en) Process for producing a brake disc for a disc brake
EP0722045B1 (en) Compressor assembly
DE102010049622A1 (en) Electric drive unit for motor vehicle, particularly electric vehicle, has hub drive driving vehicle wheel, where vehicle wheel has wheel flange and rim consisting of rim well and two rim clamps
EP1511573B1 (en) Agitating mill
EP4097828A1 (en) Cooling of an electric drive in an electrically driven vehicle
EP0565839B1 (en) Method to cast a metal motor vehicle wheel and so cast wheel
WO1990009052A1 (en) Electric machine with vertical shaft
EP0412954B1 (en) Bearing shield for an electric motor
DE4336789C1 (en) Gear for use for the drive of or in drives of agricultural appliances
DE3635987C2 (en)
EP1047886B1 (en) Brake disc assembly, especially for motor vehicles
EP0667933B1 (en) Compressor set
EP0850360B1 (en) Housing for a side channel compressor
EP1174244B1 (en) Sealing device for breaker plate in an extruder
DE3545886C2 (en)
EP0856679B1 (en) Coupling device for connecting a hub to a brake disc
EP0945635B1 (en) Elastic coupling
DE69710967T2 (en) Coupling housing with multiple fastening options

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19960806

17Q First examination report despatched

Effective date: 19971024

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990310

REF Corresponds to:

Ref document number: 177514

Country of ref document: AT

Date of ref document: 19990315

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59505293

Country of ref document: DE

Date of ref document: 19990415

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990510

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EUG Se: european patent has lapsed

Ref document number: 95120257.1

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20011204

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20011206

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021221

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20021221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20121220

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121231

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59505293

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59505293

Country of ref document: DE

Effective date: 20140701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131221