EP1399677A1 - Zweistufiger schraubenkompressor - Google Patents
Zweistufiger schraubenkompressorInfo
- Publication number
- EP1399677A1 EP1399677A1 EP02747418A EP02747418A EP1399677A1 EP 1399677 A1 EP1399677 A1 EP 1399677A1 EP 02747418 A EP02747418 A EP 02747418A EP 02747418 A EP02747418 A EP 02747418A EP 1399677 A1 EP1399677 A1 EP 1399677A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- compressor
- rotor
- coolant
- cooling
- 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.)
- Granted
Links
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. Reference is made in full to the disclosure of this document.
- each of the two compressor stages projecting parallel to one another from the transmission housing is surrounded by its own cooling housing, which is connected to the coolant circuit or coolant sump by its own connections. Due to the space requirement of the cooling housings of the two compressor stages mentioned, the design of the known screw compressor is not particularly compact.
- a screw compressor with two compressor stages is known, the compressor housing of which is arranged parallel to one another 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 through which a coolant flows in order to cool tube bundles arranged in the chambers and through which the compressed gas flows.
- 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 type specified with a particularly compact design, in which the manufacture is further simplified and the utilization of the cooling effect of the coolant circuit is improved.
- the achievement of the object is specified in claim 1.
- the dependent claims relate to further advantageous features of the invention.
- the rotor housings of both compressor stages are arranged in a common cooling housing which surrounds them at a distance and are preferably produced in one piece with the cooling housing.
- the cooling housing has only one coolant inlet and one coolant outlet and is designed so that a flow path is forced on the coolant, which flows around and cools both rotor housings of the compressor stages in succession. This results in a particularly compact design and, at the same time, simplification of the manufacture of the screw compressor and improved utilization of the coolant.
- FIG. 1 is a perspective view of a screw compressor according to an embodiment of the invention
- FIG. 2 is a side view of a screw compressor according to an embodiment of the invention in the direction of arrow A in Fig. 3,
- Fig. 3 is an end view of the screw connector in the direction of the arrow
- FIG. 3 A side view in the direction of arrow C in FIG. 3,
- FIG. 5 is a plan view of the screw compressor according to FIG. 2,
- FIG. 6 is a perspective view of the cooling housing of the screw compressor with Blicl ⁇ linkschtung from top left,
- FIG. 7 is a perspective view of the cooling housing according to FIG. 6, but in the direction from the bottom right,
- FIG. 8 shows a cross section perpendicular to the axis through the cooling housing and the compressor stages according to the section line and the viewing direction of the arrows D-D from FIG. 4.
- the two-stage screw compressor shown in FIGS. 1 to 5 has a housing 1 which is provided with feet 3 for attachment to a base.
- the upper part 5 of the housing 1 has essentially the shape of a disk-shaped stand with two vertical end walls.
- a cooling housing 7 is freely cantilevered on the left end wall in FIG. 2.
- the cooling housing 7 surrounds two compressor stages arranged in its interior, each consisting of a rotor housing and two screw rotors arranged therein that mesh with one another, as will be explained with reference to FIG. 7. From the lower part of the housing 1 protrudes below the cooling housing 7 and at a distance from it, an oil reservoir 9, which can also have feet 3 for support on the base.
- a drive unit 13 On the side of the upper housing area 5 facing away from the cooling housing 7, a drive unit 13 is provided with a preferably speed-controlled motor, which drives the screw rotors of the compressor stages via a gearbox housed in the housing section 5.
- the drive motor 13 can also drive an oil pump, which is arranged in a housing area 14 between the drive unit 13 and the branching gear in the housing area 5.
- the screw compressor shown is preferably a dry-running screwdriver compressor, ie the actual compressor chamber with the screw actuators located therein is kept oil-free.
- the oil kept in circulation by the oil pump serves on the one hand to lubricate the transmission and the roller 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.
- the part of the screw compressor to which the invention mainly relates namely the cooling housing 7 with the compressor stages arranged therein, is shown in perspective in FIGS. 6 and 7 from two different viewing directions and in FIG. 8 in section.
- cooling housing 7 inside the cooling housing 7 there is a first compressor stage 15 (low-pressure stage) with two interlocking screw rotors 17, 19, which are mounted in a rotor housing 21 with an 8-shaped cross section, and a second compressor stage 23 (high-pressure stage) 23 parallel to them with a pair of screw rotors 25, 27, which are mounted in an 8-shaped rotor housing 29.
- the cooling housing 7 is box-shaped with an essentially rectangular cross section, so that it has two side walls 31, 35 parallel to the rotors 17, 19, 25, 27, an upper side 37 and a lower side 39.
- the cooling housing 7 has openings on the top and bottom which are closed by screwed-on plates 41, 43, 47.
- the cooling housing 7 merges into a large-area flange 49, which is used to fasten the cooling housing 7 to the gear housing 5 and has an outer contour adapted to it.
- the cooling housing 7 is closed at the end by a bearing cover 51 which is fastened to the cooling housing 7 with screws.
- the inlet opening 57 for sucking in 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 gas compressed in the first stage is in the right one in FIG. 7 (in Fig. 8 left) side wall 31.
- On the underside 39 of the cooling housing 7 there is the inlet opening 61 for the second compressor stage 23 (high pressure stage).
- the outlet opening 63 of the second compressor stage 23 is located in the left-hand side wall 35 in FIG. 6 (right in FIG. 8).
- the outlet opening 59 of the low-pressure stage is usually connected to the inlet opening 61 of the high-pressure stage via an intercooler (in the drawings not shown).
- the filters and / or silencers upstream of the suction opening 57 of the low pressure stage and the silencers, coolers and / or filters downstream of the outlet 63 of the high pressure stage are also not shown.
- These devices can be of any design known to those skilled in the art.
- on each of the four sides 31, 35, 37, 39 of the cooling housing 7 is one of the four connections 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) arranged, resulting in a compact design with good utilization of the space available on the four sides of the housing 7.
- 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.
- a cooling medium circulates to cool the two compressor stages 23, 15 together.
- the cooling housing 7 has an inlet opening 65 for the cooling medium on the underside 39 and an outlet opening 67 for the cooling medium in the upper region of the side wall 35.
- 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 dash-dotted line 69.
- This flow path is forced by baffles 71, 73 which extend at suitable points through the space 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 an "encircling angle" of more than 180 °, preferably almost 360 °.
- the rotor housings 21, 29 of the compressor stages, the guide walls 71, 73 and the cooling housing 7 are preferably produced as a one-piece housing block, as indicated by the uniform hatching in FIG. 8.
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)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20110360U DE20110360U1 (de) | 2001-06-22 | 2001-06-22 | Zweistufiger Schraubenkompressor |
DE20110360U | 2001-06-22 | ||
PCT/EP2002/006853 WO2003001064A1 (de) | 2001-06-22 | 2002-06-20 | Zweistufiger schraubenkompressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1399677A1 true EP1399677A1 (de) | 2004-03-24 |
EP1399677B1 EP1399677B1 (de) | 2006-08-16 |
Family
ID=7958420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02747418A Expired - Lifetime EP1399677B1 (de) | 2001-06-22 | 2002-06-20 | Zweistufiger schraubenkompressor |
Country Status (8)
Country | Link |
---|---|
US (1) | US6991440B2 (de) |
EP (1) | EP1399677B1 (de) |
JP (1) | JP2004530836A (de) |
CN (1) | CN1273744C (de) |
AT (1) | ATE336659T1 (de) |
DE (2) | DE20110360U1 (de) |
ES (1) | ES2271293T3 (de) |
WO (1) | WO2003001064A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202007004292U1 (de) | 2007-03-23 | 2008-07-31 | Ghh-Rand Schraubenkompressoren Gmbh | Dichtung für Wellenabdichtungen |
Families Citing this family (10)
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 |
ATE498071T1 (de) * | 2005-12-08 | 2011-02-15 | Ghh Rand Schraubenkompressoren | Schraubenkompressor |
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 |
WO2018150541A1 (ja) * | 2017-02-17 | 2018-08-23 | 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 (de) * | 2019-10-31 | 2021-05-05 | Illinois Tool Works Inc. | Fahrzeugskühlkreislauf |
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)
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 |
DE3209035A1 (de) * | 1981-03-13 | 1982-09-30 | Sullair Technology AB, 11653 Stockholm | Verfahren und vorrichtung zur zwischenkuehlung in einem oeleingespritzten mehrstufen-schraubenkompressor |
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 |
-
2001
- 2001-06-22 DE DE20110360U patent/DE20110360U1/de not_active Expired - Lifetime
-
2002
- 2002-06-20 DE DE50207867T patent/DE50207867D1/de not_active Expired - Lifetime
- 2002-06-20 JP JP2003507427A patent/JP2004530836A/ja active Pending
- 2002-06-20 ES ES02747418T patent/ES2271293T3/es not_active Expired - Lifetime
- 2002-06-20 EP EP02747418A patent/EP1399677B1/de not_active Expired - Lifetime
- 2002-06-20 WO PCT/EP2002/006853 patent/WO2003001064A1/de active IP Right Grant
- 2002-06-20 AT AT02747418T patent/ATE336659T1/de not_active IP Right Cessation
- 2002-06-20 CN CNB028021770A patent/CN1273744C/zh not_active Expired - Lifetime
-
2003
- 2003-09-30 US US10/675,315 patent/US6991440B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03001064A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202007004292U1 (de) | 2007-03-23 | 2008-07-31 | Ghh-Rand Schraubenkompressoren Gmbh | Dichtung für Wellenabdichtungen |
Also Published As
Publication number | Publication date |
---|---|
CN1273744C (zh) | 2006-09-06 |
JP2004530836A (ja) | 2004-10-07 |
EP1399677B1 (de) | 2006-08-16 |
ATE336659T1 (de) | 2006-09-15 |
CN1463331A (zh) | 2003-12-24 |
DE20110360U1 (de) | 2002-10-31 |
ES2271293T3 (es) | 2007-04-16 |
DE50207867D1 (de) | 2006-09-28 |
WO2003001064A1 (de) | 2003-01-03 |
US6991440B2 (en) | 2006-01-31 |
US20040062668A1 (en) | 2004-04-01 |
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