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EP1399677B1 - Compresseur a vis a deux etages - Google Patents

Compresseur a vis a deux etages Download PDF

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Publication number
EP1399677B1
EP1399677B1 EP02747418A EP02747418A EP1399677B1 EP 1399677 B1 EP1399677 B1 EP 1399677B1 EP 02747418 A EP02747418 A EP 02747418A EP 02747418 A EP02747418 A EP 02747418A EP 1399677 B1 EP1399677 B1 EP 1399677B1
Authority
EP
European Patent Office
Prior art keywords
coolant
housing
rotor
compressor
stage
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
EP02747418A
Other languages
German (de)
English (en)
Other versions
EP1399677A1 (fr
Inventor
Carsten Dr. Achtelik
Dieter HÜTTERMANN
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.)
GHH Rand Schraubenkompressoren GmbH
Original Assignee
GHH Rand Schraubenkompressoren GmbH
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 GHH Rand Schraubenkompressoren GmbH filed Critical GHH Rand Schraubenkompressoren GmbH
Publication of EP1399677A1 publication Critical patent/EP1399677A1/fr
Application granted granted Critical
Publication of EP1399677B1 publication Critical patent/EP1399677B1/fr
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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation

Definitions

  • the invention relates to a two-stage screw compressor according to the preamble of claim 1.
  • a screw compressor is known inter alia from DE 299 22 878 U1. The disclosure of this document is fully incorporated by reference.
  • each of the two parallel projecting from the gear housing compressor stages is surrounded by its own cooling housing, which is connected by its own connections to the coolant circuit and coolant sump. Due to the space requirement of said cooling housing of the two compressor stages, the construction of the known screw compressor is not particularly compact.
  • a ringenlcompressor with two compressor stages is known, the compressor housing are arranged parallel to each other and surrounded by a common inner housing.
  • the inner housing is concentrically surrounded by an outer housing, and the annular space between the inner and outer housing is divided into chambers, which are flowed through by a coolant, in order to cool arranged in the chambers tube bundles through which flows the compressed gas.
  • a first coolant stream cools the compressed gas of the first compressor stage
  • a second coolant stream cools the compressed gas of the second compressor stage.
  • the coolant has essentially no direct cooling effect on the rotor housing of the two compressor stages.
  • the object of the invention is to provide a two-stage screw compressor of the specified type with a particularly compact design, in which further simplifies the production and the utilization of the cooling effect of the coolant circuit is improved.
  • the rotor housings of both compressor stages are arranged in a common cooling housing which surrounds them at a distance and are preferably produced integrally with the cooling housing.
  • the cooling housing has only a coolant inlet and a coolant outlet and is designed such that a flow path is imposed on the coolant, which successively flows around and cools both rotor housings of the compressor stages.
  • the illustrated in Fig. 1 to 5 two-stage screw compressor has a housing 1, which is provided with feet 3 for attachment to a substrate.
  • the upper part 5 of the housing 1 has substantially the shape of a disk-shaped stator with two vertical end walls.
  • a cooling housing 7 is freely cantilever mounted on the left in Fig. 2 end wall.
  • the cooling housing 7 surrounds two compressor stages arranged in its interior, each consisting of a rotor housing and two screw rotors arranged therein, as will be explained with reference to FIG. 8. From the lower part of the housing 1 protrudes below the cooling housing 7 and at a distance from this an oil reservoir 9 out, which may also have feet 3 for support on the base.
  • a drive unit 13 On the side facing away from the cooling housing 7 of the upper housing portion 5, a drive unit 13 is provided with a preferably speed-controlled motor, which drives the screw rotors of the compressor stages via a housing housed in the housing section 5 gear.
  • the drive motor 13 may further drive an oil pump, which is arranged in a housing portion 14 between the drive unit 13 and the branching gear in the housing portion 5.
  • the illustrated screw compressor is preferably a dry running screw compressor, i. the actual compressor chamber with the screw rotors therein is kept oil-free.
  • the held by the oil pump in circulation oil is used on the one hand for lubrication of the transmission and the bearings of the screw rotors and on the other hand as a coolant for external cooling of the rotor housing of the two compressor stages.
  • FIGS. 6 and 7 The part of the screw compressor, to which the invention mainly refers, namely the cooling housing 7 with the compressor stages arranged therein, is shown in FIGS. 6 and 7 in perspective from two different viewing directions and in FIG. 8 in section.
  • a first compressor stage 15 (low-pressure stage) is located inside the cooling housing 7 with two intermeshing screw rotors 17, 19 which are mounted in a rotor housing 21 with a cross-sectionally 8-shaped, and axially parallel thereto a second compressor stage 23 (high-pressure stage) 23 with a pair of screw rotors 25, 27 which are mounted on an 8-shaped rotor housing 29.
  • the cooling housing 7 is box-shaped with a substantially rectangular cross-section, so that it has two to the rotors 17, 19, 25, 27 parallel side walls 31, 35, a top 37 and a bottom 39.
  • the cooling housing 7 openings which are closed by screwed plates 41, 43, 47.
  • the cooling housing 7 merges into a large-area flange 49, which serves for fastening the cooling housing 7 to the transmission housing 5 and has an outer contour adapted thereto.
  • the cooling housing 7 is closed at the end by a bearing cap 51, which is fastened with screws on the cooling housing 7.
  • On the underside of the bearing cap 51 is an oil drain port 53, which is connected via a Rüclclauftechnisch 55 (Fig. 1-5) with the oil reservoir 9.
  • the inlet opening 57 for sucking the gas to be compressed in the compression space in the rotor housing 21 of the first compressor stage 15.
  • the outlet 59 for the compressed in the first stage gas is in the right in Fig. 7 (in Fig. 8 left) side wall 31.
  • the inlet port 61 for the second compressor stage 23 is in the left in Fig. 6 (right in Fig. 8) side wall 35.
  • the outlet port 59 of the low-pressure stage is connected to the inlet port 61 of the high pressure stage usually via an intercooler (not in the drawings ) shown.
  • the intake opening 57 of the low-pressure stage upstream filter and / or muffler and the outlet 63 of the high-pressure stage downstream muffler, cooler and / or filters are of any known in the art construction.
  • each of the four sides 31, 35, 37, 39 of the cooling housing 7 each one of the four ports of the two compressor stages (inlet and outlet ports 57, 59 of the low pressure stage 15, inlet and outlet ports 61, 63 of the high-pressure stage 23), resulting in a compact design with good utilization of existing on the four sides of the housing 7 place.
  • the rotor housings 21, 29 of the two compressor stages 15, 23 are arranged at a sufficient distance from the walls of the cooling housing 7.
  • the cooling housing 7 at the bottom 39 an inlet opening 65 for the cooling medium and in the upper region of the side wall 35 an outlet opening 67 for the cooling medium.
  • the coolant supplied at the opening 65 flows through the cooling housing 7 to the outlet opening 67 on an S-shaped flow path, which is indicated by the dot-dash line 69.
  • This flow path is forced by baffles 71, 73, which extend at appropriate locations through the gap between the rotor housings 21, 29 and the cooling housing 7.
  • the flow path 69 first flows around the rotor housing 21 of the low-pressure stage 15 and then the rotor housing 29 of the high-pressure stage 23, in each case over a "wrap angle" of more than 180 °, preferably almost 360 °.
  • the rotor housings 21, 29 of the compressor stages, the baffles 71, 73 and the cooling housing 7 are made as a one-piece housing block, as indicated by the uniform hatching in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (7)

  1. Compresseur à vis à deux niveaux comprenant deux niveaux de compresseur (15, 23) disposés parallèlement entre eux, chaque niveau comprenant une paire de rotors à vis (17, 19 ; 25, 27) s'imbriquant entre eux, qui est disposée dans un carter de rotor (21, 29), chacun des deux carters de rotor étant entouré d'un carter réfrigérant et étant refroidi par du réfrigérant circulant dans le carter réfrigérant, caractérisé en ce que les deux carters de rotor (21, 29) sont entourés par un carter réfrigérant (7) commun à distance et en ce que le carter réfrigérant (7) présente seulement une entrée de réfrigérant (65) et une sortie de réfrigérant (67) de telle sorte que le réfrigérant circulant de l'entrée vers la sortie lave et refroidit les deux carters de rotor (21, 29).
  2. Compresseur à vis selon la revendication 1, caractérisé en ce que le réfrigérant lave et refroidit essentiellement d'abord un carter de rotor (21) et ensuite l'autre carter de rotor (29) sur son chemin d'écoulement de l'entrée (65) vers la sortie (67).
  3. Compresseur à vis selon la revendication 2, caractérisé en ce que le réfrigérant traverse d'abord le carter de rotor (21) du premier niveau de compresseur (15) (niveau de basse pression) et ensuite le carter de rotor (29) du second niveau de compresseur (23) (niveau de haute pression).
  4. Compresseur à vis selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le chemin d'écoulement (69) du fluide réfrigérant est agencé en forme de S d'abord autour d'un niveau de compresseur (23) et ensuite autour de l'autre niveau de compresseur (15).
  5. Compresseur à vis selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'espace intermédiaire entre le carter réfrigérant (7) et les carters de rotor (21, 29) est subdivisé par des parois directrices (71, 73), qui imposent le chemin d'écoulement (69) souhaité au fluide réfrigérant.
  6. Compresseur à vis selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que les carters de rotor (21, 29) sont conçus d'une seule pièce sous la forme d'un bloc intégré avec au moins une partie du carter réfrigérant (7).
  7. Compresseur à vis selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que le carter réfrigérant (7) est conçu sensiblement en forme de caisson avec quatre côtés (33, 35, 37, 39) parallèles aux axes de rotor des niveaux de compresseur et en ce que, sur les quatre branchements (57, 59, 61, 63) des niveaux du compresseur (15, 23) (entrée et sortie du niveau de basse pression, entrée et sortie du niveau de haute pression), à chaque fois un raccordement est disposé sur chaque coté du carter réfrigérant (7).
EP02747418A 2001-06-22 2002-06-20 Compresseur a vis a deux etages Expired - Lifetime EP1399677B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20110360U 2001-06-22
DE20110360U DE20110360U1 (de) 2001-06-22 2001-06-22 Zweistufiger Schraubenkompressor
PCT/EP2002/006853 WO2003001064A1 (fr) 2001-06-22 2002-06-20 Compresseur a vis a deux etages

Publications (2)

Publication Number Publication Date
EP1399677A1 EP1399677A1 (fr) 2004-03-24
EP1399677B1 true EP1399677B1 (fr) 2006-08-16

Family

ID=7958420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02747418A Expired - Lifetime EP1399677B1 (fr) 2001-06-22 2002-06-20 Compresseur a vis a deux etages

Country Status (8)

Country Link
US (1) US6991440B2 (fr)
EP (1) EP1399677B1 (fr)
JP (1) JP2004530836A (fr)
CN (1) CN1273744C (fr)
AT (1) ATE336659T1 (fr)
DE (2) DE20110360U1 (fr)
ES (1) ES2271293T3 (fr)
WO (1) WO2003001064A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4673136B2 (ja) * 2005-06-09 2011-04-20 株式会社日立産機システム スクリュー圧縮機
EP1957797B1 (fr) 2005-12-08 2016-09-28 GHH-RAND Schraubenkompressoren GmbH Compresseur à vis pourvu d'une chemise de refroidissement
DE202007004292U1 (de) 2007-03-23 2008-07-31 Ghh-Rand Schraubenkompressoren Gmbh Dichtung für Wellenabdichtungen
CN101498304B (zh) * 2009-03-11 2011-06-15 宁波鲍斯能源装备股份有限公司 一种煤层气双螺杆压缩机组
US10047766B2 (en) 2014-05-14 2018-08-14 Ingersoll-Rand Company Air compressor system
JP6573543B2 (ja) * 2015-12-17 2019-09-11 株式会社神戸製鋼所 スクリュ圧縮機
JP6472373B2 (ja) * 2015-12-22 2019-02-20 株式会社神戸製鋼所 スクリュ圧縮機
JP6744977B2 (ja) 2017-02-17 2020-08-19 三菱重工コンプレッサ株式会社 圧縮機モジュール
CN110005610B (zh) * 2018-01-04 2022-07-26 复盛实业(上海)有限公司 级间泄放式空气压缩机
EP3816446A1 (fr) * 2019-10-31 2021-05-05 Illinois Tool Works Inc. Circuit de refroidissement d'un vehicule automobile
CN115751772B (zh) * 2022-11-15 2023-09-15 大同云清科技有限公司 螺杆两级压缩空气源热泵

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US3129877A (en) * 1956-05-17 1964-04-21 Svenska Rotor Maskiner Ab Rotary piston, positive displacement compressor
GB966752A (en) * 1959-09-08 1964-08-12 Svenska Rotor Maskiner Ab Improvements in and relating to screw rotor compressors or vacuum pumps
US3910731A (en) * 1970-07-09 1975-10-07 Svenska Rotor Maskiner Ab Screw rotor machine with multiple working spaces interconnected via communication channel in common end plate
US4174196A (en) * 1976-07-28 1979-11-13 Hitachi, Ltd. Screw fluid machine
US4452575A (en) * 1981-03-13 1984-06-05 Svenska Rotormaskiner Ab Method and device for intermediate cooling in an oil-injected multi-stage screw compressor
JPS61169688A (ja) * 1985-01-23 1986-07-31 Hitachi Ltd スクリユ−流体機械
JPS6245992A (ja) * 1985-08-23 1987-02-27 Anretsuto:Kk 真空用多段連結型ル−ツブロワ−の冷却装置
JP2588595B2 (ja) * 1988-09-30 1997-03-05 株式会社宇野澤組鐵工所 多段ロータリー形真空ポンプ
FR2647853A1 (fr) * 1989-06-05 1990-12-07 Cit Alcatel Pompe primaire seche a deux etages
JP2572566Y2 (ja) * 1991-07-05 1998-05-25 株式会社 神戸製鋼所 空冷式オイルフリースクリュ圧縮機
BE1009590A3 (nl) * 1995-09-12 1997-05-06 Atlas Copco Airpower Nv Schroefkompressor.
SE512217C2 (sv) * 1998-06-17 2000-02-14 Svenska Rotor Maskiner Ab Tvåstegskompressor och förfarande för kylning av densamma
DE29922878U1 (de) * 1999-12-28 2001-05-10 GHH-RAND Schraubenkompressoren GmbH, 46145 Oberhausen Zweistufiger trockenlaufender Schraubenkompressor
JP2002155879A (ja) * 2000-11-22 2002-05-31 Hitachi Ltd オイルフリースクリュー圧縮機
JP4493202B2 (ja) * 2000-12-01 2010-06-30 北越工業株式会社 油冷式スクリュ２段圧縮機

Also Published As

Publication number Publication date
ATE336659T1 (de) 2006-09-15
WO2003001064A1 (fr) 2003-01-03
EP1399677A1 (fr) 2004-03-24
US6991440B2 (en) 2006-01-31
DE20110360U1 (de) 2002-10-31
JP2004530836A (ja) 2004-10-07
DE50207867D1 (de) 2006-09-28
CN1463331A (zh) 2003-12-24
ES2271293T3 (es) 2007-04-16
CN1273744C (zh) 2006-09-06
US20040062668A1 (en) 2004-04-01

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