EP3601800A1 - Compresseur à plusieurs étages - Google Patents

Compresseur à plusieurs étages

Info

Publication number
EP3601800A1
EP3601800A1 EP18713603.1A EP18713603A EP3601800A1 EP 3601800 A1 EP3601800 A1 EP 3601800A1 EP 18713603 A EP18713603 A EP 18713603A EP 3601800 A1 EP3601800 A1 EP 3601800A1
Authority
EP
European Patent Office
Prior art keywords
pressure stage
stage
compressor
pressure
valve device
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
Application number
EP18713603.1A
Other languages
German (de)
English (en)
Other versions
EP3601800B1 (fr
Inventor
Günther MAYER
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.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3601800A1 publication Critical patent/EP3601800A1/fr
Application granted granted Critical
Publication of EP3601800B1 publication Critical patent/EP3601800B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • 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
    • F04B39/10—Adaptations or arrangements 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
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • F04B49/22—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 means of valves

Definitions

  • the present invention relates to a multi-stage compressor.
  • the invention also relates to a compressor with such a multi-stage compressor and an operating method of such a multi-stage compressor.
  • Multi-stage compressors or multi-stage compressors are well known and usually have at least one low pressure stage and one high pressure stage, wherein the high pressure stage is exposed to increased wear and thereby often represents a weak point of such a multi-stage compressor.
  • Multistage compressors may, for example, have a plurality of piston-cylinder units, of which, for example, a piston-cylinder unit forms a high-pressure stage and a piston-cylinder unit forms a low-pressure stage.
  • the gas to be compressed for example air
  • the low-pressure stage the gas to be compressed, for example air
  • the at least one second piston-cylinder unit consequently the high-pressure stage.
  • the high-pressure stage In between, of course, can still be a charge air cooler.
  • a disadvantage of the multistage compressors known from the prior art is that, in particular, the piston rings in the high-pressure stage wear out more quickly due to the higher load, so that a failure of the multistage compressor can even occur due to a worn high-pressure stage even with properly working low-pressure stages.
  • the present invention therefore addresses the problem of providing a multi-stage compressor which overcomes the disadvantages known from the prior art.
  • the present invention is based on the general idea to provide a multi-stage compressor with at least one high-pressure stage and at least one low-pressure stage, which is switched in operation such that not only a single piston-cylinder unit constantly forms the high-pressure stage, but the high-pressure stage over all Piston-cylinder units migrate, whereby a uniform wear and thus a longer life can be achieved.
  • a so-called "clocking" valve device is used, which, depending on the switching position, passes on the high-pressure stage at each cycle one position, that is, assigns to each subsequent piston-cylinder unit.
  • the multistage compressor according to the invention has at least two pistons which are driven via a common crankshaft mounted in a crankcase and which are guided in associated cylinders of a respective piston-cylinder unit and which form the at least one high-pressure stage or the at least one low-pressure stage.
  • a total of three or more piston-cylinder units can be provided, of which one each form a high-pressure stage and the two or more others each form the upstream low-pressure stages.
  • a communicating with the individual cylinders line arrangement for supplying and discharging air to and from the individual cylinders.
  • the switchable valve device is arranged, which is designed such that the high-pressure stage is assigned to different cylinders depending on the switching position, in particular that the At least one high-pressure stage at each cylinder power stroke a cylinder or a piston-cylinder unit moves on.
  • the valve device can be performed mechanically, electrically, pneumatically or in other ways.
  • the inventive embodiment of the multi-stage compressor it is possible to use piston-cylinder units with the same dimensions, where contrary, for example, in multi-stage compressor known from the prior art, a high-pressure stage is carried out in each case with a smaller volume.
  • the same dimensions standard parts can be used, which can reduce the variety of parts and thus also the storage and logistics costs and installation costs.
  • Another advantage of the multi-stage compressor according to the invention is that it is still possible to provide high-density air through the traveling high-pressure stage, even if a piston-cylinder unit fails.
  • a failure such as the high-pressure stage always leads to failure of the entire compressor.
  • one of the at least one low-pressure stage downstream and the at least one high-pressure stage upstream Vorverdichtungskühler is provided.
  • the thermal energy that is supplied to the air during compression withdraw again, whereby a further compression is easily possible.
  • a Hochverdichtungskühler the high-pressure stage be followed, for example, before the introduction of the now highly compressed charge air in a pressure accumulator, whereby the storage capacity can be increased.
  • a high-pressure stage and three low-pressure stages are provided, as well as four on a common and mounted in a crankcase crankshaft driven piston, which are guided in associated cylinders in each associated piston-cylinder units and a high-pressure stage and three Form low pressure stages.
  • Such a compressor can be driven, for example, by an electric motor.
  • alternative embodiments of the multi-stage compressor according to the invention may also be considered, with for example a total of five, six or more compressor stages, of which e.g. two act as high pressure stages and the remaining as low pressure stages. Due to the fact that in the multi-stage compressor according to the invention all compressor stages, that is all piston-cylinder unit, have the same dimensions, almost any scaling is possible. If, for example, a higher volume flow is required, the number or volume of the compressor units can simply be increased.
  • the present invention is further based on the general idea of equipping a compressor, in particular an oil-free compressor, with an interconnection described in the previous paragraphs, whereby a per se long can be achieved vivid and reliable functioning, since the multi-stage compressor according to the invention not only wears less strong and thus longer-lasting, but purely theoretical with appropriate detection devices and sensors and control devices and the failure of at least one pressure level can easily compensate.
  • the present invention is further based on the general idea to provide an operating method of the above-described multi-stage compressor in which a switchable valve device is switched such that the high-pressure stage depending on the switching position of the valve device is assigned to different cylinders, in particular that the at least one high-pressure stage at each power stroke that is, in an up and down movement of an associated piston in an associated piston-cylinder unit, a cylinder moves on.
  • a switchable valve device is switched such that the high-pressure stage depending on the switching position of the valve device is assigned to different cylinders, in particular that the at least one high-pressure stage at each power stroke that is, in an up and down movement of an associated piston in an associated piston-cylinder unit, a cylinder moves on.
  • Fig. 1 is a sectional view through a multi-stage according to the invention
  • FIG. 3 shows a representation as in FIG. 2, with a valve device in a second switching position
  • valve body of the valve device shows a possible embodiment of a valve body of the valve device
  • Fig. 6 is a lower part of the valve body in the exhaust stroke.
  • an inventive multistage compressor 1 has at least one high-pressure stage 2 and at least one low-pressure stage 3.
  • the multi-stage compressor 1 according to the invention has a total of four pressure stages, one of which as a high-pressure stage 2 and three as Low pressure stages 3 are formed.
  • Each pressure stage 2, 3 has its own piston-cylinder unit 4 with a cylinder 5 and a translationally displaceably mounted piston 6 therein, wherein the piston 6 via a common and in a crankcase 7 (see Fig. 1) mounted crankshaft are driven.
  • a switchable valve device 10 is arranged according to the invention, the is formed such that the high-pressure stage 2 is assigned depending on the switching position of a valve body 1 1 of the valve means 10 different cylinders 5 or is, in particular that the at least one high-pressure stage 2 at each power stroke of a piston 6 a cylinder 5 moves on.
  • the valve device 10 is shown in an intake position, in which the low-pressure stages 3 suck in air from the crankcase 7 via the valve body 11 of the valve device 10.
  • the suction can also be done directly from the ambient air or an interposed filter.
  • pre-compressed and cooled over the Vorverdichtungskühler 12 air is sucked and fed via the valve body 1 1 of the valve means 10 of the high-pressure stage 2, that is so the left above shown piston-cylinder unit 4 already in a previous cycle.
  • FIG. 3 one can see there an exhaust stroke, in which the now pre-compressed air from the three low-pressure stages 3 via the valve body 1 1 of the valve device 10 is supplied to the first precompression cooler 12.
  • highly compressed charge air is supplied via the valve body 11 of the valve device 10, for example to a second high-compression cooler 13 and / or finally to a pressure accumulator 14.
  • valve body 1 1 1 By turning the valve body 1 1 clockwise or in the opposite direction is achieved with the valve device 10 and the associated line assembly 9 according to the invention a wandering of the respective high pressure stage 2 on the individual piston-cylinder units 4, whereby the increasingly occurring in the high-pressure stage 2 signs of wear evenly can be distributed to all piston-cylinder units 4 and whereby the life expectancy of the multi-stage compressor 1 according to the invention increases significantly.
  • the multi-stage compressor 1 is operated in which the switchable valve device 10 is switched such that the high-pressure stage 2 is assigned to different cylinders 5, that is different piston-cylinder units 4, depending on the switching position, so that the at least one high-pressure stage 2 at Each working cycle of the piston 6 or at each switching cycle of the valve device 10 a cylinder 5 and a piston-cylinder unit 4 moves on.
  • the switchable valve device 10 is switched such that the high-pressure stage 2 is assigned to different cylinders 5, that is different piston-cylinder units 4, depending on the switching position, so that the at least one high-pressure stage 2 at Each working cycle of the piston 6 or at each switching cycle of the valve device 10 a cylinder 5 and a piston-cylinder unit 4 moves on.
  • the multi-stage compressor 1 according to the invention also has the great advantage that, for example, by the failure of a single low-pressure stage 3 can be turned off by detecting, for example by means of a corresponding control device, so that the multi-stage compressor 1 of the invention even in the event of failure of a single or more low-pressure stages. 3 or high-pressure stages 2 continues to work, since the high-pressure stage 2 is not bound to only one or at least fixed to each piston-cylinder units 4.
  • the valve device 10 has, according to FIG. 4, a rotatable cylindrical valve body 11 having an upper part 17 and a lower part 18 and may be pneumatically, electrically or hydraulically switchable.
  • a rotatable cylindrical valve body 11 having an upper part 17 and a lower part 18 and may be pneumatically, electrically or hydraulically switchable.
  • outputs are arranged, which can also change their inlet function or outlet function depending on the switching position.
  • the inputs 15 and the outputs 16 may also be arranged reversed.
  • an upper part 17 of the valve body 1 1 is shown in an intake position, in which the low-pressure stages 3 suck air from the crankcase 7 or from the environment, in particular via a filter device. In this case, an intake of air via three inputs 15a.
  • the sucked air is supplied via the outputs 15a associated with the outputs 16a designed as a low-pressure stages 3 piston-cylinder units 4 and after the compression stroke the Vorverdichtungskühler 12.
  • the term "precompression cooler 12" is based on the cooling after the low-pressure compression and before the high-pressure compression.
  • pre-compressed and cooled over the Vorverdichtungskühler 12 air is sucked through the input 15b and the valve body 1 1 of the valve means 10 and the input 15b associated output 16b of the high-pressure stage 2, that is so the above left piston Cylinder unit 4 supplied.
  • a lower part 18 of the valve body 1 1 at an exhaust stroke which runs simultaneously with the intake stroke of the upper part 17 and in which the now pre-compressed air from the three low-pressure stages 3 via the inputs 15 a and the associated outputs 16 a of the valve body 1 1 of the valve device 10 is supplied to the first precompression cooler 12.
  • the high pressure stage 2 highly compressed charge air via the input 15b of the valve body 1 1 of the valve means 10 and the associated output 16b, for example, a second high-compression cooler 13 and / or finally fed to a pressure accumulator 14.
  • valve body 1 1 1 By turning the valve body 1 1 clockwise or in the opposite direction is achieved with the valve device 10 and the associated line assembly 9 according to the invention a wandering of the respective high pressure stage 2 on the individual piston-cylinder units 4, whereby the increasingly occurring in the high-pressure stage 2 signs of wear evenly on all piston Cylinder units 4 can be distributed and whereby the life expectancy of the multi-stage compressor 1 according to the invention increases significantly.
  • the two parts 17, 18 are rotatable relative to each other or together.
  • the intake stroke is controlled via the lower part 17.
  • Both parts 17, 18 move simultaneously clockwise or counterclockwise to allow precise timing while maintaining a robust design. But there is no connection of the channels or
  • crankshaft 8 can be driven, the crankshaft 8 and thus the multi-stage compressor 1, for example via an electric motor, not shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne un compresseur à plusieurs étages (1) comprenant - au moins un étage haute pression (2) et au moins un étage basse pression (3), - au moins deux pistons (6) entraînés par le biais d'un vilebrequin (8) commun et monté dans un carter de vilebrequin (7), lesquels pistons sont guidés dans des cylindres associés (5) et lesquels forment ledit au moins un étage haute pression (2) et ledit au moins un étage basse pression (3), - un ensemble de conduites (9) communiquant avec les cylindres associés (5) et servant à l'alimentation des cylindres (5) en air et à l'évacuation d'air hors de ceux-ci, - un dispositif soupape (10) commutable étant disposé dans l'ensemble de conduites (9), lequel est conçu de telle sorte que le(s) étage(s) haute pression (2) est/sont associé(s) à différents cylindres (5) en fonction de la position de commutation du dispositif soupape (10).
EP18713603.1A 2017-03-29 2018-03-20 Compresseur à plusieurs étages Active EP3601800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017205366.6A DE102017205366A1 (de) 2017-03-29 2017-03-29 Mehrstufiger Verdichter
PCT/EP2018/057058 WO2018177821A1 (fr) 2017-03-29 2018-03-20 Compresseur à plusieurs étages

Publications (2)

Publication Number Publication Date
EP3601800A1 true EP3601800A1 (fr) 2020-02-05
EP3601800B1 EP3601800B1 (fr) 2021-01-27

Family

ID=61800491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18713603.1A Active EP3601800B1 (fr) 2017-03-29 2018-03-20 Compresseur à plusieurs étages

Country Status (5)

Country Link
US (1) US20200040879A1 (fr)
EP (1) EP3601800B1 (fr)
CN (1) CN110462214B (fr)
DE (1) DE102017205366A1 (fr)
WO (1) WO2018177821A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111207054B (zh) * 2020-02-22 2021-07-30 邵立坤 一种空压机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072317A (en) * 1960-02-24 1963-01-08 Joy Mfg Co Multi-stage compressor
US6183211B1 (en) * 1999-02-09 2001-02-06 Devilbiss Air Power Company Two stage oil free air compressor
DE10249062A1 (de) * 2002-10-22 2004-06-03 Pfeiffer Vacuum Gmbh Mehrstufige Kolbenvakuumpumpe und Verfahren zu deren Betrieb
AT502998B1 (de) * 2006-01-11 2008-05-15 Leobersdorfer Maschf Hochdruck-kompressor sowie dessen verwendung und verfahren zu dessen betrieb
CN101769222B (zh) * 2010-02-21 2011-12-21 张世严 热力水轮机发电装置
DE102010053091A1 (de) * 2010-12-01 2012-06-06 Linde Aktiengesellschaft Mehrstufiger Kolbenverdichter
WO2015004217A1 (fr) * 2013-07-09 2015-01-15 Continental Teves Ag & Co. Ohg Compresseur a pistons en etoile et procédé de fonctionnement
DE102014202265A1 (de) * 2014-02-07 2015-08-13 Voith Patent Gmbh Verdichter für ein Druckluftsystem insbesondere eines Kraftfahrzeugs
CN205897601U (zh) * 2016-08-03 2017-01-18 宁夏万仕隆冷冻科技股份有限公司 一种可实现单、双级自动切换运行的双级配打制冷机组

Also Published As

Publication number Publication date
WO2018177821A1 (fr) 2018-10-04
EP3601800B1 (fr) 2021-01-27
CN110462214B (zh) 2020-11-17
CN110462214A (zh) 2019-11-15
US20200040879A1 (en) 2020-02-06
DE102017205366A1 (de) 2018-10-04

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