WO2009024210A1 - Kolbenluftverdichter - Google Patents
Kolbenluftverdichter Download PDFInfo
- Publication number
- WO2009024210A1 WO2009024210A1 PCT/EP2008/005372 EP2008005372W WO2009024210A1 WO 2009024210 A1 WO2009024210 A1 WO 2009024210A1 EP 2008005372 W EP2008005372 W EP 2008005372W WO 2009024210 A1 WO2009024210 A1 WO 2009024210A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- air compressor
- air
- piston air
- suction chamber
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/08—Actuation of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
- F04B49/035—Bypassing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Definitions
- the invention relates to a reciprocating compressor comprising a suction chamber and a separate from the suction chamber Zuschaltraum.
- piston air compressors are used for example in the form of one-cylinder reciprocating compressors in pneumatic systems of trucks.
- Such a piston air compressor has a piston running in a cylinder that compresses air on its way from a bottom dead center to a top dead center, which then exits the piston air compressor as compressed air through a diaphragm valve acting as a check valve.
- the compressed air is passed via a pressure line in an air treatment plant, which dries the compressed air and forwards them via a control valve to consumers, such as a compressed air tank.
- the piston air compressor is switched to idle.
- the pressure line remains under pressure.
- a Zuschaltraum is switched into the one-cylinder piston air compressor.
- the piston compresses the air in the Zuschaltraum and the compressed air pushes the piston back on its way from top dead center to bottom dead center, so that, apart from flow losses, idle no energy must be expended ,
- the larger the connection space the smaller the peak pressure that can occur at maximum. For example, if the addition space is the same as the displacement, the peak pressure when the piston is at the upper top is twice the minimum pressure when the piston is at bottom dead center.
- this air must be passed through the engine of the truck to avoid pollution of the environment with lubricating oil-containing air.
- lubricating oil-containing air can lead to accelerated aging of the turbocharger.
- the invention has for its object to provide a piston air compressor, which reduces this problem.
- the invention solves the problem by a generic piston air compressor or compressor having an air passage from the Zuschaltraum to the suction chamber.
- An advantage of the invention is that from a pressure chamber of the piston air compressor incoming compressed air can escape during compression by the piston partially into the suction chamber, so that neither in the pressure chamber still in the Zuschaltraum can build up an excessive pressure.
- An air flow between cylinder and piston along is significantly reduced or prevented.
- displaced air from the Zuschaltraum can be removed for example in a suction of the engine of the truck. The air thus removed is essentially free of lubricating oil, so that a possibly existing turbocharger is spared.
- Another advantage of the invention is its easy realizability.
- the air duct can be easily realized by a hole of suitable size in a partition wall between suction and Zuschaltraum. It is thus teilhaft note also possible to modify existing piston air compressor later.
- an air duct means any structure within the piston air compressor which allows air to pass from the suction space into the connection space. Examples are recesses, bores, channels or conduits that can either house or house valves, flaps, diaphragms or the like.
- the suction chamber is in particular that space through which air is sucked in during a suction process of the piston air compressor.
- the pressure chamber is in particular the space through which compressed air leaves the piston air compressor.
- the clearance space is the space through which air flows from one piston to the next piston during idling operation.
- the suction chamber and / or the Zuschaltraum are formed in a cylinder head of the reciprocating compressor. This results in a particularly easy to manufacture piston air compressor.
- the Zuschaltraum is separated by a wall of the suction chamber, wherein the air channel is formed in the wall.
- the air duct can be realized in a particularly simple manner.
- the air duct is a recess, in particular a hole in the wall.
- a valve in particular a valve adjustable in its cross-section or its passage pressure or a throttle, can be installed in the air duct.
- the air duct is preferably chosen to be in idle mode the piston air compressor, the pressure in the Zuschaltraum does not increase in the long term. It has been found that often a cross-sectional area of less than 15 mm 2 is sufficient to achieve this requirement. It has also been found that the air duct should preferably have a cross-sectional area of over 0.5 mm 2 . It is particularly favorable when the cross-sectional area for the respective piston air compressor is individually adapted or manually and / or automatically adjustable, for example by means of adjusting screw and / or pressure relief valve.
- Piston air compressors according to the invention are preferably single-cylinder piston air compressors.
- the piston air compressor is a two-cylinder piston air compressor or a multi-cylinder piston air compressor.
- the air duct is preferably provided with a check valve, in particular a ball valve. This check valve blocks an air flow from the suction chamber in the Zuschaltraum.
- the check valve comprises a membrane, in particular a sheet-metal membrane, which at least in sections has a membrane contour which corresponds to an inner contour of the suction space.
- the check valve membrane acts as a closing body.
- the non-return valve membrane attaches to the inner contour of the suction chamber and thus prevents leakage of air out of the suction chamber.
- FIG. 1 shows a pneumatic system according to the invention
- Figure 2 shows a single-cylinder piston air compressor according to the invention in one
- FIG. 3 shows a cylinder head of the one-cylinder piston air compressor according to FIG.
- FIG. 4 a shows an alternative embodiment of a cylinder head of a piston air compressor according to the invention
- FIG. 4b shows a closing body from the cylinder head according to FIG. 4a
- FIG. 5a shows a further alternative embodiment of a cylinder head for a piston air compressor according to the invention
- FIG. 5b shows a check valve of the cylinder head according to FIG. 5a
- FIG. 6 shows a plan view of a cylinder head of a two-cylinder
- Figure 7 is a perspective view of another alternative embodiment of a cylinder head of a two-cylinder piston air compressor according to the invention.
- Figure 8 shows a diagram that plots the power consumption of different piston air compressor against the compressor speed
- FIG. 9 is a graph showing the idleness operation for various piston air compressors, which plots the compressor speed.
- FIG. 1 shows a pneumatic system 10 for a truck, not shown, which comprises a schematically drawn piston air compressor 12, a pressure line 14, an air treatment unit 16, a supply line 18 and an electrical control line 20.
- the piston air compressor 12 sucks in the load operation ambient air through an intake opening 22, compresses them and releases them into the pressure line 14.
- a predetermined pressure p max is present in the supply line 18, the air treatment unit 16 sends a signal via the electrical control line 20 to the reciprocating compressor 12, whereupon it is switched to idling. In this case, no further air is sucked in and a check valve 24 prevents compressed air from entering the piston pressure compressor 12 from the pressure line 14.
- FIG. 2 shows a piston air compressor 12 according to the invention which has a cylinder head 26, a cylinder 28, a piston 30 running in the cylinder 28 and a crank drive 32.
- the piston 30 has piston rings 34 a, 34 b and 34 c and is reciprocated by a connecting rod 36.
- Within a housing 38 is not shown oil lubrication, which lubricates the piston 30.
- the housing 38 is connected via a not shown vent line in connection with a suction of an internal combustion engine of the truck.
- FIG. 3 shows the cylinder head 26, which is a self-contained inventive subject matter of the present application, in a perspective view.
- the piston runs on the side facing away from the viewer of the cylinder head.
- a suction chamber 40 is formed, which is separated by a wall 42 of a Zuschaltraum 44.
- air flows through the inlet opening 22 (see FIG. 2) into the suction chamber 40, from the suction chamber 40 into the cylinder 28, where it is compressed by the cylinder 30 to be moved to a top dead center.
- a hidden in Figure 3 suction chamber diaphragm seal prevents the compressed air can flow back into the suction chamber.
- the compressed air is forced into a pressure chamber 46 and from there into the pressure line 14 (see Figure 1).
- the intake air is pressed into the Zuschaltraum 44 ( Figure 3) and flows from there back into the cylinder when the piston moves from top dead center to a bottom dead center.
- an air channel in the form of a recess 48 is provided in the wall 42, which separates the suction chamber 40 from the Zuschaltraum 44.
- an air channel in the form of a bore 50 in the wall 42 is provided in the wall 42.
- FIG. 4 a shows an alternative cylinder head 26 according to the invention, which has a two-part connection space 44 a, 44 b and a partially annular suction space 40.
- the air channel is arranged in the form of a recess 48 which is closed on the suction chamber side of a closing membrane 52, which thus constitutes a closing body.
- the closing diaphragm 52 is made of spring steel sheet and has a membrane contour which corresponds to an inner contour of the suction chamber 40.
- FIG. 4b shows the closing membrane 52 in a perspective view. It can be seen that the closing membrane 52 is formed as a bent spring steel sheet.
- FIG. 5a shows an alternative embodiment of a cylinder head 26 for a single-cylinder piston air compressor according to the invention, in which Switching space 44b and the suction chamber 40, an air passage in the form of a check valve, namely a ball valve 56, is arranged.
- FIG. 5b shows the ball valve 56 with a valve ball 58, which is prestressed by a spring 60 onto a valve seat 62.
- FIG. 6 shows a cylinder head 26 for a two-cylinder piston air compressor according to the invention.
- a ball valve 56 is arranged between the suction chamber 40 and a Zuschaltraum 44.
- air passage is formed in which a ball valve 56 is arranged.
- air can flow from one of the two cylinders through the adjoining space 44 into the respective other cylinder when the piston air compressor is operated at idle, so that the adjoining space simultaneously acts as a connecting channel.
- FIG. 7 shows a further alternative cylinder head 26 for a piston air compressor according to the invention, in which two air channels in the form of recesses 68a, 68b are provided in the wall 42 which separates the suction chamber 40 from the connection space 44. Also in Figure 7, the piston of the reciprocating compressor in installation position in the direction behind the cylinder head 26. In the pressure chamber 46 are in this view two pressure chamber diaphragm valves 70a, 70b to recognize the influx of compressed air from the respective cylinder into the pressure chamber 46th allow and prevent backflow.
- Curve a shows the speed-dependent power consumption of a piston air compressor according to the prior art, in which the compressed air is discharged into the atmosphere at idle.
- Curve b shows the power consumption for a system according to Figure 1 with an ideally tight check valve 24 (see Figure 1) in Govenar mode.
- Curve c shows the power consumption of a piston-type air compressor according to FIG. 1, when the check valve 24 has a permeability (leakage rate).
- curve d shows the case according to curve c, but in which a bore 50 (see Figure 3) is introduced into the wall 42. It can be seen that the power consumption in this case is significantly lower than in the case without a bore. It can also be seen that approximately the same power consumption can be achieved through the bore as for a piston air compressor with an ideally tight check valve 24.
- FIG. 9 shows the idleness in idling mode as a function of the compressor speed for the cases mentioned in FIG.
- the difference between the curves c and b shows the positive influence of the air channel in the form of the bore 50 in the wall 42 (see Figure 3).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010521322A JP2010537107A (ja) | 2007-08-21 | 2008-07-01 | ピストン空気圧縮機 |
CN200880019820.8A CN101680446B (zh) | 2007-08-21 | 2008-07-01 | 活塞空气压缩机 |
EP20080773797 EP2191136B1 (de) | 2007-08-21 | 2008-07-01 | Kolbenluftverdichter |
US12/733,248 US9046096B2 (en) | 2007-08-21 | 2008-07-01 | Piston air compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007039476.6 | 2007-08-21 | ||
DE200710039476 DE102007039476A1 (de) | 2007-08-21 | 2007-08-21 | Kolbenverdichter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009024210A1 true WO2009024210A1 (de) | 2009-02-26 |
Family
ID=39811975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/005372 WO2009024210A1 (de) | 2007-08-21 | 2008-07-01 | Kolbenluftverdichter |
Country Status (6)
Country | Link |
---|---|
US (1) | US9046096B2 (de) |
EP (1) | EP2191136B1 (de) |
JP (1) | JP2010537107A (de) |
CN (1) | CN101680446B (de) |
DE (1) | DE102007039476A1 (de) |
WO (1) | WO2009024210A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9856866B2 (en) | 2011-01-28 | 2018-01-02 | Wabtec Holding Corp. | Oil-free air compressor for rail vehicles |
CN102678522B (zh) * | 2012-05-15 | 2014-12-24 | 福建斯特机电科技股份有限公司 | 一种空气压缩机气缸盖 |
DE102013001147A1 (de) * | 2013-01-24 | 2014-07-24 | Voith Patent Gmbh | Mehrstufiger Kolbenverdichter |
CN104712535B (zh) * | 2014-11-05 | 2016-11-16 | 东莞市天昶机电制造有限公司 | 一种用于医用雾化器的消音压缩机 |
AU2016200975A1 (en) | 2015-02-16 | 2016-09-01 | Tti (Macao Commercial Offshore) Limited | Air inlet control for air compressor |
CN106014914B (zh) * | 2016-07-07 | 2018-01-30 | 东莞市天昶机电制造有限公司 | 一种超静音无油医用压缩机 |
US11204022B2 (en) | 2018-08-14 | 2021-12-21 | Milwaukee Electric Tool Corporation | Air compressor |
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DE695726C (de) * | 1937-10-23 | 1940-08-31 | Erich Lampel | Vorrichtung zum stufenlosen Regeln der Foerdermenge eines Kolbenverdichters |
AT265498B (de) * | 1964-07-17 | 1968-10-10 | Burckhardt Ag Maschf | Einrichtung zur stufenlosen Regulierung der Förderleistung an Kolbenkompressoren |
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-
2007
- 2007-08-21 DE DE200710039476 patent/DE102007039476A1/de not_active Withdrawn
-
2008
- 2008-07-01 CN CN200880019820.8A patent/CN101680446B/zh active Active
- 2008-07-01 US US12/733,248 patent/US9046096B2/en active Active
- 2008-07-01 WO PCT/EP2008/005372 patent/WO2009024210A1/de active Application Filing
- 2008-07-01 JP JP2010521322A patent/JP2010537107A/ja active Pending
- 2008-07-01 EP EP20080773797 patent/EP2191136B1/de active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE695726C (de) * | 1937-10-23 | 1940-08-31 | Erich Lampel | Vorrichtung zum stufenlosen Regeln der Foerdermenge eines Kolbenverdichters |
AT265498B (de) * | 1964-07-17 | 1968-10-10 | Burckhardt Ag Maschf | Einrichtung zur stufenlosen Regulierung der Förderleistung an Kolbenkompressoren |
AT277436B (de) * | 1967-02-02 | 1969-12-29 | Hoerbiger Ventilwerke Ag | Einrichtung zur stufenlosen Liefermengenregelung für Kolbenverdichter |
DE4321013A1 (de) * | 1993-06-24 | 1995-01-05 | Wabco Vermoegensverwaltung | Gasverdichter |
DE19850269A1 (de) * | 1998-10-31 | 2000-05-04 | Wabco Gmbh & Co Ohg | Gasverdichter |
Also Published As
Publication number | Publication date |
---|---|
CN101680446B (zh) | 2015-04-01 |
US9046096B2 (en) | 2015-06-02 |
EP2191136A1 (de) | 2010-06-02 |
US20110277625A1 (en) | 2011-11-17 |
JP2010537107A (ja) | 2010-12-02 |
CN101680446A (zh) | 2010-03-24 |
EP2191136B1 (de) | 2013-08-14 |
DE102007039476A1 (de) | 2009-02-26 |
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