EP4390128A1 - Compresseur à piston avec fonction de ralenti - Google Patents

Compresseur à piston avec fonction de ralenti Download PDF

Info

Publication number
EP4390128A1
EP4390128A1 EP23214151.5A EP23214151A EP4390128A1 EP 4390128 A1 EP4390128 A1 EP 4390128A1 EP 23214151 A EP23214151 A EP 23214151A EP 4390128 A1 EP4390128 A1 EP 4390128A1
Authority
EP
European Patent Office
Prior art keywords
compressor
relief
channel
chamber
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.)
Pending
Application number
EP23214151.5A
Other languages
German (de)
English (en)
Inventor
Mirko Göpfert
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP4390128A1 publication Critical patent/EP4390128A1/fr
Pending legal-status Critical Current

Links

Images

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
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F04B39/125—Cylinder heads
    • 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

Definitions

  • the invention relates to a piston compressor with idling function, which is suitable for compressing a compressible working medium, in particular air, for use in a compressed air supply device in a motor vehicle.
  • Piston compressors or air compressors are used to compress gases, e.g. air, which is used as a working medium to operate various units.
  • Compressors are used in motor vehicles, among other places. In operation, such compressors are used, for example, to fill a compressed air tank with compressed air until a predetermined pressure level is reached in the pressure tank.
  • the piston compressor essentially consists of a base body in which one or two compressor stages are usually provided.
  • the cylinder head is arranged above the compressor stages. Valves and channels are provided in the cylinder head to implement the air flow and air cooling.
  • ambient air is sucked into the first compressor stage via an inlet channel, compressed and then passed through an intermediate channel into the second compressor stage where it is further compressed.
  • the compressed air is then passed through an air treatment unit into the compressed air tank.
  • piston compressors include means for switching to idle mode. These can be valve circuits or a coupling can be arranged between the drive and the piston compressor.
  • a piston compressor with two compressor stages is known.
  • Two switchable valves are arranged in the cylinder head, with each compressor stage being assigned a valve so that each displacement can be connected to the inlet port of the first stage via the assigned valve. When the valves are open, no compression is possible.
  • the object of the invention is to propose an alternative relief system.
  • a reciprocating piston compressor for a compressed air supply system in a motor vehicle comprising a cylinder head in which a relief system is integrated, comprising a first relief valve which is assigned to a first compressor stage and a second relief valve which is assigned to a second compressor stage, wherein the relief valves can be switched from a compressor operating position to an idle position.
  • the first relief valve closes a first connecting channel between a first piston chamber and an inlet channel of the compressor stage and the second relief valve closes a second connecting channel between a piston chamber of the second compressor stage and an intermediate chamber in the compressor operating position.
  • first and second relief valves can be designed as self-closing valves, wherein the relief valves each comprise a spring by which the relief valves are moved into the compressor operating position. When not switched, the relief valves are therefore closed.
  • the first and second relief valves are both connected to a control channel so that both relief valves can be switched simultaneously via a control air connection.
  • the valves can also be switched electromagnetically or by means of hydraulics.
  • the intermediate chamber can have a volume that corresponds to 0.5 to 5 times the volume of the second displacement.
  • the intermediate chamber can be a partial section of an intermediate channel that connects the outlet valve of the first compressor stage to an inlet valve of the second compressor stage.
  • the intermediate chamber can be a separate chamber that only serves to enlarge the second piston chamber during idle operation.
  • cooling is provided to cool the air in the intermediate channel and/or in the intermediate chamber.
  • the figures show the two operating states of the reciprocating piston compressor according to the invention. Firstly, the delivery mode in which compressed air is delivered into the pressure channel 14. And secondly, the idle mode in which no compressed air is delivered into the pressure channel.
  • the reciprocating piston compressor 1 is a two-stage compressor which has a first and a second compressor stage 2, 3.
  • the two relief valves 9 and 10 are arranged in the common cylinder head 21.
  • the figures are simplified sketches, whereby further details can be taken from the StdT.
  • the first relief valve 9 and the second relief valve 10 are held in the closed position during conveying operation by means of the springs 20a, b. Between the first and second compressor stages, the air is cooled in the intermediate channel 1, so that the efficiency, the delivery rate and the temperature of the compressed air are increased.
  • the intermediate channel 13 is a channel formed by the pressure chamber of the first compressor stage 2 and the inlet chamber of the second compressor stage 3.
  • FIG. 2 now shows the idle operation, in which the relief valves 9 and 10 are supplied with control air 11 via the control channel 12, so that the valves 9 and 10 are moved into the open position against the spring forces of the springs 20a, b.
  • the first compressor stage 2 When the first relief valve 9 is open, the first compressor stage 2 is directly connected to the environment via the suction channel 4, which leads to direct ventilation of the first piston chamber.
  • FIG. 2 For the connection of the second relief valve 10, Figure 2 a first solution is shown in which at least a partial section of the intermediate channel 13 is formed by the intermediate chamber 13a.
  • the second relief valve 10 is integrated into the intermediate channel 13 in such a way that when the second relief valve 10 is opened, a second connecting channel 17 between the second piston chamber 19 and the intermediate channel 13 is released.
  • the intermediate channel 13 also forms the intermediate chamber 13a.
  • the volume of the intermediate channel 13 or intermediate chamber 13a forms a relief volume, whereby the pressure of the compressed air in the relief volume depends on the time at which the relief valves 9, 10 open.
  • Another solution could also be a separate intermediate chamber which is only coupled to the second relief valve 10, so that a connection between the second piston chamber 19 and the intermediate chamber can be activated via the second relief valve.
  • the cylinder volume of the second piston chamber 19 is pressed into the intermediate chamber 13a and pulled out again as long as the relief valve 10 remains open.
  • the outlet valve 6 of the first compressor stage 2 remains closed, since the first relief valve 9 simultaneously creates a connection between the first piston chamber 18 and environment so that no compressed air from the first compressor stage 2 can be forced into the intermediate channel 13 or the intermediate chamber 13a.
  • the volume of the intermediate chamber can be fully used for pressure relief of the second compressor stage.
  • the invention combines several functions for the intermediate channel 13, 13a between the cylinders of a multi-stage compressor.
  • the intermediate channel 13, 13a serves to relieve pressure for the second compressor stage 3 and in compressor mode to improve cooling of the air pre-compressed in the first compressor stage 2.
  • the connecting channel 13 with the intermediate chamber 13a is additionally used in the compressor operating position of the relief valves 9, 10 to provide a pre-pressure from the first compressor stage 2 for charging the second compressor stage 3.
  • the intermediate chamber 13a and the connecting channel 13 can be provided with a cooling system or a cooling channel to cool the compressed air before the next compression.
  • the relief valves 9, 10 can alternatively be controlled hydraulically or electromagnetically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
EP23214151.5A 2022-12-21 2023-12-05 Compresseur à piston avec fonction de ralenti Pending EP4390128A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022134427.4A DE102022134427A1 (de) 2022-12-21 2022-12-21 Kolbenkompressor mit Leerlauffunktion

Publications (1)

Publication Number Publication Date
EP4390128A1 true EP4390128A1 (fr) 2024-06-26

Family

ID=89119419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23214151.5A Pending EP4390128A1 (fr) 2022-12-21 2023-12-05 Compresseur à piston avec fonction de ralenti

Country Status (3)

Country Link
EP (1) EP4390128A1 (fr)
CN (1) CN118224065A (fr)
DE (1) DE102022134427A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214713A1 (de) * 1982-04-21 1983-10-27 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Einrichtung zur erzeugung von druckgas
EP1650434A2 (fr) 2004-10-19 2006-04-26 ITG Kompressoren GmbH Compresseur à pistons multi-étages ayant un gain en puissance réduit à vide
US20100054958A1 (en) * 2006-09-05 2010-03-04 New York Air Brake Corporation Oil-free air compressor system with inlet throttle
DE102014202265A1 (de) * 2014-02-07 2015-08-13 Voith Patent Gmbh Verdichter für ein Druckluftsystem insbesondere eines Kraftfahrzeugs
DE102015225065A1 (de) 2015-12-14 2017-06-14 Voith Patent Gmbh Zylinderkopf für mehrstufigen Kolbenverdichter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009011214A1 (de) 2009-03-04 2010-09-23 Technische Universität Dresden Kolbenverdichter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214713A1 (de) * 1982-04-21 1983-10-27 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Einrichtung zur erzeugung von druckgas
EP1650434A2 (fr) 2004-10-19 2006-04-26 ITG Kompressoren GmbH Compresseur à pistons multi-étages ayant un gain en puissance réduit à vide
US20100054958A1 (en) * 2006-09-05 2010-03-04 New York Air Brake Corporation Oil-free air compressor system with inlet throttle
DE102014202265A1 (de) * 2014-02-07 2015-08-13 Voith Patent Gmbh Verdichter für ein Druckluftsystem insbesondere eines Kraftfahrzeugs
DE102015225065A1 (de) 2015-12-14 2017-06-14 Voith Patent Gmbh Zylinderkopf für mehrstufigen Kolbenverdichter

Also Published As

Publication number Publication date
DE102022134427A1 (de) 2024-06-27
CN118224065A (zh) 2024-06-21

Similar Documents

Publication Publication Date Title
DE3133502A1 (de) Verfahren und vorrichtung zur steuerung des kompressors einer fahrzeugklimaanlage
DE102017213736B3 (de) Pneumatisches Ventil
DE1628144B2 (de) Saugdrosselsteuereinrichtung
EP1650434B1 (fr) Compresseur à pistons multi-étages ayant un gain en puissance réduit à vide
EP3880975B1 (fr) Système d'actionneur électrohydrostatique
EP2128443A1 (fr) Elément de pompe
WO2017102397A1 (fr) Culasse de compresseur à pistons multi-étagé
DE2338267A1 (de) Zweistufiger pneumatisch-hydraulischer booster
EP3126672B1 (fr) Compresseur à piston alternatif et procédé de régulation dudit compresseur
WO2012107284A1 (fr) Circuit de compresseur pour un dispositif de régulation pneumatique d'un véhicule
DE102005040921B4 (de) Trockenlaufender Schraubenverdichter mit pneumatisch gesteuertem Entlüftungsventil
EP4390128A1 (fr) Compresseur à piston avec fonction de ralenti
DE10139055A1 (de) Verfahren, Computerprogramm, Steuer- und/oder Regelgerät sowie Kraftstoffsystem für eine Brennkraftmaschine
DE3345267A1 (de) Kuehlkompressor mit variabler speisung
WO2015118001A1 (fr) Compresseur d'air pour système à air comprimé, notamment d'un véhicule automobile
DE10354719A1 (de) Fördereinrichtung
EP2480761A1 (fr) Moteur à expansion de gaz
EP0922165B1 (fr) Pompe a faire le vide
DE102019119944A1 (de) Ventilvorrichtung für einen Hubkolbenverdichter
DE102017004359A1 (de) Verfahren zum Betreiben einer Druckregelanlage mit einem mehrstufigen Kompressor, sowie Druckregelanlage
DE102017206172A1 (de) Scroll-Expansionsmaschine und Abgasrestwärmenutzungseinrichtung, insbesondere eines Fahrzeuges, mit einer solchen Expansionsmaschine
DE102015225065B4 (de) Zylinderkopf für mehrstufigen Kolbenverdichter
WO2003064823A1 (fr) Dispositif de commande de soupape de changement des gaz
EP0075098B1 (fr) Dispositif de production de gaz comprimé
DE10135727B4 (de) Regelventil gespeist mit Wechselspannung und Taumelscheibenkompressor mit diesem Regelventil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR