WO2003008808A1 - Screw compressor - Google Patents
Screw compressor Download PDFInfo
- Publication number
- WO2003008808A1 WO2003008808A1 PCT/BE2002/000116 BE0200116W WO03008808A1 WO 2003008808 A1 WO2003008808 A1 WO 2003008808A1 BE 0200116 W BE0200116 W BE 0200116W WO 03008808 A1 WO03008808 A1 WO 03008808A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- conduit
- inlet
- pressure
- connection
- Prior art date
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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- 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
Definitions
- the present invention relates to a volumetric compressor comprising a compressor element with a compression chamber, to which an inlet conduit, which can be closed off by means of an inlet valve, and a pressure conduit, in which a pressure vessel is installed, are connected, whereby the inlet valve comprises a valve element cooperating with a valve seat, said element being connected to a piston which can be displaced in a hollow space in a cylinder-forming housing, and a springy element which pushes this valve element towards the valve seat, whereas a control conduit puts the interior of the pressure vessel into connection with a cylinder chamber which is formed between the operative side of the piston and the housing.
- the invention relates to a volumetric compressor which remedies the aforementioned disadvantage and has a less complex and more reliable control of the inlet valve, such that the operational reliability thereof is guaranteed.
- this aim is achieved in that the valve element is bypassed by a bypass with therein a return valve allowing only a flow towards the compression chamber, and in that the cylinder chamber is connected to the inlet conduit by means of a connection conduit, with therein a load valve which can be controlled by means of a control device, whereby the minimum flow section of this connection conduit, with open load valve, is larger than the minimum flow section of the control conduit.
- the construction which is necessary for the control of the inlet valve is simple and does not require many components.
- the inlet valve and the connection conduit with the load valve and possibly the bypass with the return valve can be incorporated in a relatively simple cast part.
- the working of the inlet valve is very reliable.
- Figure 1 schematically represents such compressor in unloaded condition
- Figure 2 schematically represents the compressor from figure 1, however, in loaded condition.
- the volumetric compressor schematically represented in the figures is a screw compressor which comprises a compressor element 2, driven by a motor 1, to which an inlet conduit 3 with therein an inlet valve 4 and a pressure conduit 5 with therein a pressure vessel 6 are connected.
- the compressor element 2 comprises a compression chamber 7 , provided with an inlet 8 , to which the inlet conduit 5 connects, and an outlet 9, to which the pressure conduit 5 connects.
- the inlet valve 4 substantially consists of a housing 12 forming a cylinder, which housing is provided with a hollow space 12A in which a piston 13 can be moved. Between the operative surface of the piston 13 and the housing, a cylinder chamber 14 is formed. At the other side, the piston 13, by means of a plunger 15, is connected to a valve element 16 which is situated in the compression chamber and cooperates with a valve seat 17 provided in the inlet 8.
- a springy element in the shape of a compression spring 18 surrounds the plunger 15, between a part of the housing 12 and the piston 13, and pushes the piston 13 away and, therefore, the valve element 16 towards or against the valve seat 17.
- a control conduit 19 gives out into the cylinder chamber 14, onto the extremity turned away from the valve element 16.
- connection conduit 20 is connected which thus connects the cylinder chamber 14 to the inlet conduit 3 , more particularly the part of the passage 4A of the inlet valve 4, situated upstream in respect to the valve element 16.
- connection conduit 20 a load valve 21 is provided which is controlled by a relay 22, the actuation of which is determined by a control device 23.
- the minimum flow section of this connection conduit 20 is larger than the minimum flow section of the control conduit 19.
- the minimum flow section of the connection conduit 20 mostly can be found at the height of the load valve 21, on account of the fact that this flow section, at opposite sides of the load valve 21, is constant and larger.
- control conduit 19 mostly, as represented in the figures, has a constant flow section which then is equal to the minimum flow section.
- valve element 16 is bypassed by means of a bypass 24 with therein a return valve 25.
- This bypass 24 thus gives out at the suction side in the compression chamber 7, and, in the represented form of embodiment, connects to the part between the load valve 21 and the passage of the inlet valve 16 and in this manner, thus, to the inlet conduit 3.
- bypass 24 can connect directly to the inlet conduit 3 or the passage 4A of the inlet valve 4.
- the working of the inlet valve 4 is as follows:
- the inlet valve 4 is pushed by the pressure spring 18 into closed position, against the valve seat 17.
- the control device 23 commands the relay 22 such that the load valve 21 is open.
- connection conduit 20 As the minimum flow section of the connection conduit 20 is much larger than the minimum flow section of the control conduit 19, the pressure in the cylinder chamber 14 will be approximately equal to the pressure in the inlet conduit 3. The inlet valve 4 thus remains closed.
- the control device 23 commands the closing of the load valve 21.
- the pressure in the cylinder chamber will rise up to the same level as the pressure in the pressure vessel 6, in consideration of the fact that no air will be suctioned from this chamber any longer.
- the minimum pressure valve 26 opens and compressed air from the vessel 6 is directed towards the consumer, as represented by arrow P6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02748480A EP1407147B1 (en) | 2001-07-17 | 2002-07-05 | Screw compressor |
JP2003514121A JP3975197B2 (en) | 2001-07-17 | 2002-07-05 | Screw compressor |
US10/481,417 US7316546B2 (en) | 2001-07-17 | 2002-07-05 | Screw compressor |
DE60210088T DE60210088T2 (en) | 2001-07-17 | 2002-07-05 | SCREW COMPRESSOR |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2001/0484 | 2001-07-17 | ||
BE2001/0484A BE1014301A3 (en) | 2001-07-17 | 2001-07-17 | Volumetric compressor. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003008808A1 true WO2003008808A1 (en) | 2003-01-30 |
Family
ID=3897061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE2002/000116 WO2003008808A1 (en) | 2001-07-17 | 2002-07-05 | Screw compressor |
Country Status (6)
Country | Link |
---|---|
US (1) | US7316546B2 (en) |
EP (1) | EP1407147B1 (en) |
JP (1) | JP3975197B2 (en) |
BE (1) | BE1014301A3 (en) |
DE (1) | DE60210088T2 (en) |
WO (1) | WO2003008808A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013126970A1 (en) | 2012-02-28 | 2013-09-06 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
WO2013126969A1 (en) | 2012-02-28 | 2013-09-06 | Atlas Copco Airpower, Naamloze Vennootschap | Compressor device, as well as the use of such an assembly |
US11015602B2 (en) | 2012-02-28 | 2021-05-25 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040146674A1 (en) * | 2003-01-29 | 2004-07-29 | Howell Earl Edmondson | Acetaldehyde scavenging by addition of active scavengers to bottle closures |
DE102005038273A1 (en) * | 2005-08-02 | 2007-02-08 | Linde Ag | Machine with a rotatable rotor |
US8770837B2 (en) * | 2009-12-21 | 2014-07-08 | Nuovo Pignone S.P.A. | Fatigue resistant thermowell and methods |
DE102012006363A1 (en) | 2011-04-01 | 2012-10-04 | Rotorcomp Verdichter Gmbh | Air regulators for compressors, in particular screw compressors |
DE102011084811B3 (en) | 2011-10-19 | 2012-12-27 | Kaeser Kompressoren Ag | Gas inlet valve for a compressor, compressor with such a gas inlet valve and method for operating a compressor with such a gas inlet valve |
BE1021737B1 (en) * | 2013-09-11 | 2016-01-14 | Atlas Copco Airpower, Naamloze Vennootschap | LIQUID-INJECTED SCREW COMPRESSOR, CONTROL FOR THE TRANSITION FROM AN UNLOADED TO A LOAD SITUATION OF SUCH SCREW COMPRESSOR AND METHOD APPLIED THEREOF |
WO2019111661A1 (en) * | 2017-12-08 | 2019-06-13 | 株式会社日立産機システム | Liquid-feeding screw compressor |
DE102020121963A1 (en) | 2020-08-21 | 2022-02-24 | Bürkert Werke GmbH & Co. KG | compressor system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3961862A (en) * | 1975-04-24 | 1976-06-08 | Gardner-Denver Company | Compressor control system |
EP0629778A2 (en) * | 1993-06-16 | 1994-12-21 | Atlas Copco Airpower N.V. | Regulating device for screw-type compressors |
EP1004774A2 (en) * | 1993-10-29 | 2000-05-31 | Ateliers François s.a. | Tank mounted rotary compressor |
JP2000249070A (en) * | 1999-02-25 | 2000-09-12 | Hokuetsu Kogyo Co Ltd | Non-load power relieving device for water injection compressor |
BE1012655A3 (en) * | 1998-12-22 | 2001-02-06 | Atlas Copco Airpower Nv | Working method for the control of a compressor installation and compressorinstallation controlled in this way |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE33835E (en) * | 1988-08-30 | 1992-03-03 | H.Y.O., Inc. | Hydraulic system for use with snow-ice removal vehicles |
-
2001
- 2001-07-17 BE BE2001/0484A patent/BE1014301A3/en not_active IP Right Cessation
-
2002
- 2002-07-05 EP EP02748480A patent/EP1407147B1/en not_active Expired - Fee Related
- 2002-07-05 JP JP2003514121A patent/JP3975197B2/en not_active Expired - Fee Related
- 2002-07-05 DE DE60210088T patent/DE60210088T2/en not_active Expired - Fee Related
- 2002-07-05 WO PCT/BE2002/000116 patent/WO2003008808A1/en active IP Right Grant
- 2002-07-05 US US10/481,417 patent/US7316546B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3961862A (en) * | 1975-04-24 | 1976-06-08 | Gardner-Denver Company | Compressor control system |
EP0629778A2 (en) * | 1993-06-16 | 1994-12-21 | Atlas Copco Airpower N.V. | Regulating device for screw-type compressors |
EP1004774A2 (en) * | 1993-10-29 | 2000-05-31 | Ateliers François s.a. | Tank mounted rotary compressor |
BE1012655A3 (en) * | 1998-12-22 | 2001-02-06 | Atlas Copco Airpower Nv | Working method for the control of a compressor installation and compressorinstallation controlled in this way |
JP2000249070A (en) * | 1999-02-25 | 2000-09-12 | Hokuetsu Kogyo Co Ltd | Non-load power relieving device for water injection compressor |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12 3 January 2001 (2001-01-03) * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013126970A1 (en) | 2012-02-28 | 2013-09-06 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
WO2013126969A1 (en) | 2012-02-28 | 2013-09-06 | Atlas Copco Airpower, Naamloze Vennootschap | Compressor device, as well as the use of such an assembly |
EP2940303A1 (en) | 2012-02-28 | 2015-11-04 | Atlas Copco Airpower | Compressor device, as well as the use of such an assembly |
EP2960512A1 (en) | 2012-02-28 | 2015-12-30 | Atlas Copco Airpower | Compressor device, as well as the use of such an assembly |
EP3228867A1 (en) * | 2012-02-28 | 2017-10-11 | Atlas Copco Airpower N.V. | Screw compressor |
US9850896B2 (en) | 2012-02-28 | 2017-12-26 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
US10151313B2 (en) | 2012-02-28 | 2018-12-11 | Atlas Copco Airpower, Naamloze Vennootschap | Compressor device as well as the use of such a compressor device |
EP2839160B1 (en) * | 2012-02-28 | 2018-12-19 | ATLAS COPCO AIRPOWER, naamloze vennootschap | Screw compressor |
US10197058B2 (en) | 2012-02-28 | 2019-02-05 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
EP2960512B1 (en) * | 2012-02-28 | 2019-03-06 | Atlas Copco Airpower | Compressor device, as well as the use of such an assembly |
US10480511B2 (en) | 2012-02-28 | 2019-11-19 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
US11015602B2 (en) | 2012-02-28 | 2021-05-25 | Atlas Copco Airpower, Naamloze Vennootschap | Screw compressor |
Also Published As
Publication number | Publication date |
---|---|
EP1407147B1 (en) | 2006-03-22 |
JP3975197B2 (en) | 2007-09-12 |
JP2004535528A (en) | 2004-11-25 |
EP1407147A1 (en) | 2004-04-14 |
US7316546B2 (en) | 2008-01-08 |
DE60210088D1 (en) | 2006-05-11 |
DE60210088T2 (en) | 2006-09-07 |
US20040151602A1 (en) | 2004-08-05 |
BE1014301A3 (en) | 2003-08-05 |
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