EP0344516B1 - Multi-stage side channel compressor - Google Patents

Multi-stage side channel compressor Download PDF

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Publication number
EP0344516B1
EP0344516B1 EP89108883A EP89108883A EP0344516B1 EP 0344516 B1 EP0344516 B1 EP 0344516B1 EP 89108883 A EP89108883 A EP 89108883A EP 89108883 A EP89108883 A EP 89108883A EP 0344516 B1 EP0344516 B1 EP 0344516B1
Authority
EP
European Patent Office
Prior art keywords
intermediate space
compressor
housing
outlet opening
lateral 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
EP89108883A
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German (de)
French (fr)
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EP0344516A1 (en
Inventor
Siegfried Dipl.-Ing. Schönwald
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0344516A1 publication Critical patent/EP0344516A1/en
Application granted granted Critical
Publication of EP0344516B1 publication Critical patent/EP0344516B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • 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 multi-stage side channel compressor according to the preamble of claim 1.
  • Such a side channel compressor is known from DE-OS 18 17 430.
  • a separate cooling system is arranged in this known side channel compressor between the housings of the two compressor stages.
  • This cooling system consists of a fan that conveys cooling air between baffles connected to the two housings.
  • Such a cooling system requires considerable assembly effort. Even if the baffles are made in one piece with the corresponding housing parts, the fan must still be installed between the two housings.
  • the invention has for its object to provide a multi-stage side channel blower of the type described above so that better cooling is achieved with less assembly and material.
  • the problem is solved by the features specified in the characterizing part of claim 1.
  • the supply of a cooling liquid in the space already present between the housings of the individual compressor stages results in very intensive cooling.
  • all that is required is to seal the intermediate space and in each case a corresponding inlet and outlet opening for the cooling liquid.
  • the use of the space that is present anyway has the advantage that, despite the good cooling, the overall length of the side channel blower is not must be enlarged. The short length of the shaft of the side channel blower, which is necessary to avoid critical speeds, can thus also be achieved.
  • the inlet and outlet openings are provided on the relevant housing in the region of the interrupter separating the inlet and outlet openings of the housing. Since the side channel is omitted in the area of the interrupter, there is sufficient space for the inlet and outlet opening without the overall length of the side channel compressor having to be increased.
  • the ventilation required when filling the intermediate space with cooling liquid can be achieved in a simple manner in that the outlet opening is connected either directly or via a ventilation line to the highest point of the intermediate space in relation to the operating position of the compressor.
  • a barrier wall separating the supply and return flow of the coolant is provided in the intermediate space.
  • the housing shells opposite one another are formed in one piece by adjacent compressor stages and the intermediate space is formed on the one-piece housing part, the result is a cavity which is completely closed except for the openings necessary for the production. Thus, only these openings need to be sealed.
  • the housing of these side channel compressors 1 and 2 consist of outer housing shells 3 and 4 and a common inner housing shell 5.
  • This inner housing shell 5 is designed so that it forms two complete compressor housings together with the two attached outer housing shells 3 and 4.
  • the impellers 21 of the individual compressor stages arranged on a common drive shaft 20 are located in these compressor housings.
  • a further inner housing shell is attached to the inner housing shell 5, to which such an inner housing shell or the corresponding outer housing shell 3 or 4 can in turn be attached.
  • a space 6 is created between them in a multi-stage side channel compressor by assembling the individual housings.
  • This space 6 can be used for cooling the individual compressor stages by means of a cooling liquid.
  • the one-piece design of the inner housing shell 5 results in an intermediate space 6 which, except for the ring opening 7 necessary for the production of this housing shell 5, is completely closed in the hub region of the housing shell 5.
  • the ring opening 7 is closed by means of a tube piece 10 lying tightly against the hub extensions 8 and 9 of the inner housing shell 5.
  • an inlet and outlet opening 12 and 13 are provided on the inner housing shell 5, to which an inlet or outlet line 14 or 15 is connected.
  • a vent line 16 leading to the highest point 17 of the space 6 in the installation position of the side channel compressor is also connected to the outlet opening 13.
  • the vent line 16 can be omitted if the outlet opening 13 is in the operating position of the side channel compressor itself at the highest point 17 of the space 6.
  • a barrier wall 18 is inserted in the intermediate space 6. This barrier wall 18 can be dispensed with if, in the installation position of the side channel compressor corresponding to FIG. 2, the inlet opening 12 is at the bottom and the mouth 19 of the ventilation line 16 in the intermediate space 6 is at the top. In this case, the desired circulation already results.

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

Description

Die Erfindung betrifft einen mehrstufigen Seitenkanalverdichter gemäß dem Oberbegriff des Anspruches 1.The invention relates to a multi-stage side channel compressor according to the preamble of claim 1.

Ein solcher Seitenkanalverdichter ist durch die DE-OS 18 17 430 bekannt. Zum Abführen der bei der Verdichtung entstehenden Wärme ist bei diesem bekannten Seitenkanalverdichter zwischen den Gehäusen der beiden Verdichterstufen ein gesondertes Kühlsystem angeordnet. Dieses Kühlsystem besteht aus einem Ventilator, der Kühlluft zwischen mit den beiden Gehäusen verbundenen Leitblechen hindurchfördert. Ein derartiges Kühlsystem erfordert einen erheblichen Montageaufwand. Selbst dann, wenn die Leitbleche einstückig mit den entsprechenden Gehäuseteilen hergestellt werden, muß trotzdem noch der Ventilator zwischen den beiden Gehäusen montiert werden.Such a side channel compressor is known from DE-OS 18 17 430. To dissipate the heat generated during the compression, a separate cooling system is arranged in this known side channel compressor between the housings of the two compressor stages. This cooling system consists of a fan that conveys cooling air between baffles connected to the two housings. Such a cooling system requires considerable assembly effort. Even if the baffles are made in one piece with the corresponding housing parts, the fan must still be installed between the two housings.

Der Erfindung liegt die Aufgabe zugrunde, einen mehrstufigen Seitenkanalverdichter der eingangs beschriebenen Art so auszubilden, daß mit weniger Montage- und Materialaufwand eine bessere Kühlung erreicht wird.The invention has for its object to provide a multi-stage side channel blower of the type described above so that better cooling is achieved with less assembly and material.

Die Lösung der gestellten Aufgabe gelingt durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale. Die Zuführung einer Kühlflüssigkeit in den ohnehin zwischen den Gehäusen der einzelnen Verdichterstufen vorhandenen Zwischenraum ergibt eine sehr intensive Kühlung. Um diese Kühlung mittels der Kühlflüssigkeit zu ermöglichen, bedarf es lediglich der Abdichtung des Zwischenraumes und jeweils einer entsprechenden Ein- und Auslaßöffnung für die Kühlflüssigkeit. Die Ausnutzung des ohnehin vorhandenen Zwischenraumes hat weiterhin den Vorteil, daß trotz der guten Kühlung die Baulänge des Seitenkanalverdichters nicht vergrößert werden muß. Somit kann auch die zur Vermeidung von kritischen Drehzahlen notwendige kurze Länge der Welle des Seitenkanalverdichters erzielt werden.The problem is solved by the features specified in the characterizing part of claim 1. The supply of a cooling liquid in the space already present between the housings of the individual compressor stages results in very intensive cooling. To enable this cooling by means of the cooling liquid, all that is required is to seal the intermediate space and in each case a corresponding inlet and outlet opening for the cooling liquid. The use of the space that is present anyway has the advantage that, despite the good cooling, the overall length of the side channel blower is not must be enlarged. The short length of the shaft of the side channel blower, which is necessary to avoid critical speeds, can thus also be achieved.

Nach einer Ausgestaltung der Erfindung sind die Einlaß- und die Auslaßöffnung in dem Bereich des die Eintritts- und Austrittsöffnung des Gehäuses voneinander trennenden Unterbrechers an dem betreffenden Gehäuse vorgesehen. Da im Bereich des Unterbrechers der Seitenkanal entfällt, steht ein ausreichender Raum für die Ein- und Austrittsöffnung zur Verfügung, ohne daß die Baulänge des Seitenkanalverdichters vergrößert werden muß.According to one embodiment of the invention, the inlet and outlet openings are provided on the relevant housing in the region of the interrupter separating the inlet and outlet openings of the housing. Since the side channel is omitted in the area of the interrupter, there is sufficient space for the inlet and outlet opening without the overall length of the side channel compressor having to be increased.

Die beim Anfüllen des Zwischenraumes mit Kühlflüssigkeit notwendige Entlüftung läßt sich auf einfache Weise dadurch erreichen, daß die Auslaßöffnung im bezug auf die Betriebslage des Verdichters entweder direkt oder über eine Entlüftungsleitung mit der höchsten Stelle des Zwischenraumes in Verbindung steht.The ventilation required when filling the intermediate space with cooling liquid can be achieved in a simple manner in that the outlet opening is connected either directly or via a ventilation line to the highest point of the intermediate space in relation to the operating position of the compressor.

Um die erforderliche Zirkulation der Kühlflüssigkeit zu erreichen, ist in dem Zwischenraum eine den Zu- und Rückstrom des Kühlmittels trennende Sperrwand vorgesehen.In order to achieve the required circulation of the coolant, a barrier wall separating the supply and return flow of the coolant is provided in the intermediate space.

Dadurch, daß die einander gegenüberliegenden Gehäuseschalen von benachbarten Verdichterstufen einstückig ausgebildet und der Zwischenraum an dem einstückigen Gehäuseteil ausgeformt ist, ergibt sich ein bis auf die für die Herstellung notwendigen Öffnungen vollkommen geschlossener Hohlraum. Somit müssen lediglich diese Öffnungen abgedichtet werden.Because the housing shells opposite one another are formed in one piece by adjacent compressor stages and the intermediate space is formed on the one-piece housing part, the result is a cavity which is completely closed except for the openings necessary for the production. Thus, only these openings need to be sealed.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben.The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing.

Es zeigen:

FIG 1
einen mehrstufigen Seitenkanalverdichter in Längsschnitt,
FIG 2
eine Draufsicht eines zwischen zwei Verdichterstufen angeordneten Gehäuseteiles.

Show it:
FIG. 1
a multi-stage side channel blower in longitudinal section,
FIG 2
a plan view of a housing part arranged between two compressor stages.

Mit 1 und 2 sind zwei die einzelnen Verdichterstufen bildende Seitenkanalverdichter bezeichnet. Die Gehäuse dieser Seitenkanalverdichter 1 und 2 bestehen aus äußeren Gehäuseschalen 3 und 4 sowie einer gemeinsamen inneren Gehäuseschale 5. Diese innere Gehäuseschale 5 ist so gestaltet, daß sie zusammen mit den beiden angebauten äußeren Gehäuseschalen 3 und 4 zwei vollständige Verdichtergehäuse bildet. In diesen Verdichtergehäusen befinden sich die auf einer gemeinsamen Antriebswelle 20 angeordneten Laufräder 21 der einzelnen Verdichterstufen. Bei einer noch höherstufigen Ausführung des Seitenkanalverdichters wird an die innere Gehäuseschale 5 eine weitere innere Gehäuseschale angesetzt, an die wiederum eine solche innere Gehäuseschale oder die entsprechende äußere Gehäuseschale 3 bzw. 4 angebaut werden kann.1 and 2 denote two side channel compressors which form the individual compressor stages. The housing of these side channel compressors 1 and 2 consist of outer housing shells 3 and 4 and a common inner housing shell 5. This inner housing shell 5 is designed so that it forms two complete compressor housings together with the two attached outer housing shells 3 and 4. The impellers 21 of the individual compressor stages arranged on a common drive shaft 20 are located in these compressor housings. In an even higher-level version of the side channel compressor, a further inner housing shell is attached to the inner housing shell 5, to which such an inner housing shell or the corresponding outer housing shell 3 or 4 can in turn be attached.

Durch die konstruktive Form der Seitenkanalverdichtergehäuses bedingt, entsteht bei einem mehrstufigen Seitenkanalverdichter durch das Zusammenfügen der einzelnen Gehäuse ein Zwischenraum 6 zwischen denselben. Dieser Zwischenraum 6 kann für die Kühlung der einzelnen Verdichterstufen mittels einer Kühlflüssigkeit genutzt werden. Durch die einstückige Ausbildung der inneren Gehäuseschale 5 ergibt sich ein Zwischenraum 6, der bis auf die für die Herstellung dieser Gehäuseschale 5 notwendige Ringöffnung 7 im Nabenbereich der Gehäuseschale 5 vollkommen geschlossen ist. Die Ringöffnung 7 ist mittels eines dicht an den Nabenansätzen 8 und 9 der inneren Gehäuseschale 5 anliegenden Rohrstückes 10 veschlossen.Due to the structural shape of the side channel compressor housing, a space 6 is created between them in a multi-stage side channel compressor by assembling the individual housings. This space 6 can be used for cooling the individual compressor stages by means of a cooling liquid. The one-piece design of the inner housing shell 5 results in an intermediate space 6 which, except for the ring opening 7 necessary for the production of this housing shell 5, is completely closed in the hub region of the housing shell 5. The ring opening 7 is closed by means of a tube piece 10 lying tightly against the hub extensions 8 and 9 of the inner housing shell 5.

Im Bereich des unterbrechers 11 des einen Seitenkanalverdichters 2 ist an der inneren Gehäuseschale 5 jeweils eine Eintritts- und Austrittsöffnung 12 und 13 vorgesehen, an die eine Zu- bzw. Abführleitung 14 bzw. 15 angeschlossen ist. An die Austrittsöffnung 13 ist ferner eine zu dem in der Aufstellage des Seitenkanalverdichters höchsten Punkt 17 des Zwischenraumes 6 führende Entlüftungsleitung 16 angeschlossen. Hierdurch wird die erforderliche Entlüftung des Zwischenraumes 6 beim Anfüllen mit Kühlflüssigkeit sichergestellt. Die Entlüftungsleitung 16 kann entfallen, wenn die Austrittsöffnung 13 in der Betriebslage des Seitenkanalverdichters selbst an dem höchsten Punkt 17 des Zwischenraumes 6 liegt.In the area of the interrupter 11 of the one side channel compressor 2, an inlet and outlet opening 12 and 13 are provided on the inner housing shell 5, to which an inlet or outlet line 14 or 15 is connected. A vent line 16 leading to the highest point 17 of the space 6 in the installation position of the side channel compressor is also connected to the outlet opening 13. As a result, the required ventilation of the space 6 when filling with Coolant ensured. The vent line 16 can be omitted if the outlet opening 13 is in the operating position of the side channel compressor itself at the highest point 17 of the space 6.

Um die notwendige Zirkulation der Kühlflüssigkeit in dem Zwischenraum 6 zu erreichen und zu verhindern, daß die Kühlflüssigkeit von der Eintrittsöffnung 12 direkt zur Austrittsöffnung 13 strömt, ist in dem Zwischenraum 6 eine Sperrwand 18 eingesetzt. Diese Sperrwand 18 kann entfallen, wenn in der der Darstellung nach FIG 2 entsprechenden Aufstellage des Seitenkanalverdichters die Eintrittsöffnung 12 unten und die Mündung 19 der Entlüftungsleitung 16 im Zwischenrum 6 oben liegt. In diesem Fall ergibt sich bereits die gewünschte Zirkulation.In order to achieve the necessary circulation of the cooling liquid in the intermediate space 6 and to prevent the cooling liquid from flowing directly from the inlet opening 12 to the outlet opening 13, a barrier wall 18 is inserted in the intermediate space 6. This barrier wall 18 can be dispensed with if, in the installation position of the side channel compressor corresponding to FIG. 2, the inlet opening 12 is at the bottom and the mouth 19 of the ventilation line 16 in the intermediate space 6 is at the top. In this case, the desired circulation already results.

Claims (5)

1. A multi-stage lateral channel compressor in which the housings of the individual compressor stages consisting of individual housing shells are arranged axially behind each other and are mechanically interconnected, in which furthermore for the impellers of the individual compressor stages there is provided a common drive shaft and a cooling in the intermediate space existing between the housings of the individual compressor stages, characterised in that the intermediate space (6) is sealed outwards as well as relative to the drive shaft, in that allocated to the intermediate space (6) there is in each case an inlet opening and an outlet opening (12 and 13) and by way of these openings (12, 13) a cooling liquid flowing through the intermediate space (6) is supplied and discharged.
2. A lateral channel compressor according to claim 1, characterised in that the inlet and the outlet opening (12 and 13) are provided in the region of the interupter (11) separating the inlet opening and outlet opening of the housing from each other at the relevant housing.
3. A lateral channel compressor according to claim 1 or 2, characterised in that the outlet opening (13) is connected relative to the operational position of the compressor either directly or by way of a venting line (16) with the highest point (17) of the intermediate space (6).
4. A lateral channel compressor according to claim 1, 2 or 3, characterised in that in the intermediate space (6) there is provided a blocking wall (18) separating the inflow and return flow of the cooling agent.
5. A lateral channel compressor according to one or several of the preceding claims, characterised in that the housing shells opposite each other of adjacent compressor stages are constructed in one piece and the intermediate space (6) is formed on the one-piece housing part (inner housing shell 5).
EP89108883A 1988-05-30 1989-05-17 Multi-stage side channel compressor Expired - Lifetime EP0344516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818374 1988-05-30
DE3818374 1988-05-30

Publications (2)

Publication Number Publication Date
EP0344516A1 EP0344516A1 (en) 1989-12-06
EP0344516B1 true EP0344516B1 (en) 1991-07-17

Family

ID=6355440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108883A Expired - Lifetime EP0344516B1 (en) 1988-05-30 1989-05-17 Multi-stage side channel compressor

Country Status (4)

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US (1) US4943208A (en)
EP (1) EP0344516B1 (en)
JP (1) JP2521440Y2 (en)
DE (2) DE8816440U1 (en)

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US5372475A (en) * 1990-08-10 1994-12-13 Nippondenso Co., Ltd. Fuel pump
JP2917563B2 (en) * 1991-04-15 1999-07-12 株式会社デンソー Swirl pump
DE9215231U1 (en) * 1992-11-09 1994-03-10 Siemens AG, 80333 München Compressor unit
US5525039A (en) * 1993-07-21 1996-06-11 Roy E. Roth Company Hermetically sealed magnetic drive pump
US5409357A (en) * 1993-12-06 1995-04-25 Ford Motor Company Impeller for electric automotive fuel pump
DE19819267B4 (en) * 1998-04-30 2006-11-30 Gebr. Becker Gmbh & Co Side Channel Blowers
US6174128B1 (en) 1999-02-08 2001-01-16 Ford Global Technologies, Inc. Impeller for electric automotive fuel pump
JP4671844B2 (en) * 2005-05-27 2011-04-20 株式会社日立産機システム Blower
DE102007060111A1 (en) 2007-12-13 2009-06-18 Gebr. Becker Gmbh Side channel blower operating method for e.g. printing application, involves switching over air inlet ducts and air outlet ducts by separate switching unit for multi-step and/or multi-flow operation of side channel blower
DE102007015777A1 (en) 2007-03-30 2008-10-02 Gebr. Becker Gmbh Method for operating side-channel compressor e.g., for industrial applications such as packaging and medical technology, requires special switching unit for switching-over air exit channels
US9249806B2 (en) 2011-02-04 2016-02-02 Ti Group Automotive Systems, L.L.C. Impeller and fluid pump

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Also Published As

Publication number Publication date
JPH01173494U (en) 1989-12-08
DE8816440U1 (en) 1989-09-28
US4943208A (en) 1990-07-24
EP0344516A1 (en) 1989-12-06
JP2521440Y2 (en) 1996-12-25
DE58900178D1 (en) 1991-08-22

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