EP2344767B1 - Compresseur pour la production d'air comprimé destiné à un véhicule à moteur - Google Patents

Compresseur pour la production d'air comprimé destiné à un véhicule à moteur Download PDF

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Publication number
EP2344767B1
EP2344767B1 EP09748037.0A EP09748037A EP2344767B1 EP 2344767 B1 EP2344767 B1 EP 2344767B1 EP 09748037 A EP09748037 A EP 09748037A EP 2344767 B1 EP2344767 B1 EP 2344767B1
Authority
EP
European Patent Office
Prior art keywords
dead space
compressor
valve
compressed air
space valve
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.)
Not-in-force
Application number
EP09748037.0A
Other languages
German (de)
English (en)
Other versions
EP2344767A1 (fr
Inventor
Eduard Hilberer
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge 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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP2344767A1 publication Critical patent/EP2344767A1/fr
Application granted granted Critical
Publication of EP2344767B1 publication Critical patent/EP2344767B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B39/08—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

Definitions

  • the invention relates to a compressor for compressed air generation, in particular for a motor vehicle, with a dead space valve to relieve the compressor outside a compressed air delivery phase.
  • the invention further relates to a method for operating a compressor for generating compressed air, in particular for a motor vehicle, wherein a dead space valve is opened to relieve the compressor outside a compressed air delivery phase.
  • Compressors for generating compressed air can be relieved of pressure during an air supply phase, while the compressed air is fed into a system downstream of the compressor, in order to save energy.
  • the compressor may include a dead space valve, which connects, for example, a closed dead space with a compression space of the compressor to allow breathing of the compressor in the dead space, or the compression space opens to the environment, to a non-pressurized conveying air into the environment to allow.
  • a dead space valve which connects, for example, a closed dead space with a compression space of the compressor to allow breathing of the compressor in the dead space, or the compression space opens to the environment, to a non-pressurized conveying air into the environment to allow.
  • To control and operate the dead space valve is doing, such as from the DE 39 09 531 A1 known, already used by the compressor compressed air.
  • the AT 152 717 B also describes a reciprocating compressor, which can be relieved with the help of a switchable dead space.
  • the dead space is switchable by a control
  • the invention is therefore based on the object during the switching of Schadraumventils occurring mechanical loads of air inlet and outlet valves of the compressor to limit.
  • the dead space valve is electrically actuated.
  • the Schadraumventil is electrically actuated, can be dispensed with a complicated pipe guide for a pneumatic pressure medium, for example, processed compressed air.
  • a pneumatic pressure medium for example, processed compressed air.
  • a relief hole is provided in a valve body of the dead space valve to relieve the valve body in each switching position of the dead space valve. If the valve body of Schadraumventils relieved in each switching position of Schadraumventils, that is, there are no resulting pressure-related forces on the valve body, the forces necessary for switching the dead space valve forces can be selected low, resulting in an electrical actuation of the dead space valve to a reduction of energy consumption , A pressure relief of the valve body is possible in particular with an electrical actuation of the dead space valve, because no control surfaces for transmitting power from an actuating medium to the valve body are necessary. Furthermore, the switching time of the dead space valve can be reduced in this way, whereby the undesirable mechanical loads occurring during switching of air inlet and outlet valves of the compressor are limited.
  • the dead space valve comprises a lifting magnet and a coil.
  • a combination of a solenoid with a coil for actuating the dead space valve is a mature and reliable way to realize an electrical controllability of Schadraumventils.
  • the dead space valve comprises a piezoelectric actuator.
  • a piezoelectric actuator which can be constructed, for example, from many individual piezocrystals, also allows the realization of an electrical controllability of the dead space valve.
  • the valve body of the dead space valve can be held in its open or in its closed position solely by the piezoelectric actuator without any further components, in particular without a spring. This allows the construction of a particularly robust dead space valve, which also has very short switching times.
  • the dead space valve is electrically operated.
  • the invention is based on the generic method in that a valve body of Schadraumventils is relieved of pressure via a relief hole in each switching position of the dead space valve.
  • FIG. 1 shows a cylinder head housing of a compressor according to the prior art.
  • the illustrated cylinder head housing 38 is connected via a connecting plate 44 with a housing, not shown, a piston chamber of the compressor.
  • the cylinder head housing 38 has an air inlet 28 and an air outlet 30, through which air is sucked in or ejected during a compressed air delivery phase of the compressor.
  • a dead space 40 and a dead space valve 12 are arranged with a valve body 14 in the cylinder head housing 38, wherein the dead space valve 12 is designed as a pneumatically actuated lift valve.
  • the valve body 14 of the dead space valve 12 separates the Dead space 40 of a piston chamber of the compressor, not shown, wherein the valve body 14 is seated tightly on a valve seat in the connection plate 44.
  • the air is therefore expelled through an air outlet valve 42 and the air outlet 30 during a compression phase.
  • FIG. 2 shows a cylinder head housing of a compressor according to the invention.
  • FIG. 2 illustrated Schadraumventil 12 shown in its open switching state, so that the valve body 14 is not seated on its valve seat in the connection plate 44 and the compressor breathes in the dead space 40, wherein neither air sucked through the air inlet 28 is still discharged through the air outlet 30.
  • FIG. 1 in contrast to FIG. 1 is that in FIG. 2 illustrated Schadraumventil 12 actuated via an electrical connection 36, wherein a coil 20 of Schadraumventils 12 induces a magnetic field, so that a arranged in the interior of the coil 20 solenoid 18 is moved in the axial direction of Schadraumventils 12 and the Schadraumventil 12 opens or closes.
  • the valve body 14 is guided by a guide ring 46, which can also perform a sealing function. Via a spring 70, the valve body 14 is biased, so that the dead space valve 12 is usually closed in the de-energized state.
  • the valve body 14 furthermore has relief bores 16, by means of which it is ensured that no resulting pressure forces in the axial direction can act on the valve body 14. Therefore, the spring 70 need not be configured to hold the valve body 14 in its closed shift position when a maximum compression pressure in the piston space of the compressor is achieved. Therefore, the necessary for switching the dead space valve 12 force can be relatively small and, for example, about 20 N amount. In order to produce an efficiently working Schadraumventil 12, a holding current reduction can continue to be provided, which reduces the energy consumption of Schadraumventils 12 in its controlled switching state.
  • FIG. 3 shows a double compressor according to the invention.
  • the illustrated double compressor 10 is arranged in a housing 32 which has a piston chamber 26 and a further piston chamber 26 ', in which in each case a piston 24 or a further piston 24' periodically move up and down, wherein both pistons 24, 24 'are driven by a common shaft 34.
  • a compressed air delivery phase not shown, air is sucked in via an air inlet 28 and a further air inlet 28 'into the piston chamber 26 or the further piston chamber 26', compressed and expelled via a common air outlet 30.
  • the illustrated compressor 10 further comprises a dead space valve 12, which valve body 14 which can connect outside of a compressed air delivery phase between the piston chamber 26 and the other piston chamber 26 '.
  • the described dead space valve 12 can be actuated via the electrical connection 36, and comprises a piezoelectric actuator 22, which can be constructed, for example, from many individual piezoelectric elements which undergo a change in length when an electrical voltage is applied, so that the valve bodies 14 are movable in the direction of this change in length. Since the individual Piezzoelelmente are usually crystals which have a high compressive strength, can be dispensed with a separate spring for biasing the valve body 14 in this embodiment. It is also a dead space valve 12 analogous to the in FIG. 2 embodiment shown conceivable, either for each valve body 14 either a separate coil may be provided with a solenoid or both valve body 14 are movable via a common solenoid from a common coil. In an analogous manner can also in the embodiment according to FIG. 2 a piezoelectric actuator may be provided instead of the combination of coil and solenoid.
  • valve body 14 can also be realized in the form of a sliding lamella, as for example from the DE 39 09 531 A1 is known.
  • FIG. 4 shows a system of a drive motor, a compressor according to the invention and a compressed air treatment plant.
  • the illustrated drive motor 48 drives via a drive train to the compressor 10, which in turn supplies compressed air via a cooling line 52 to a compressed air treatment plant 54, which distributes the compressed air to a first load circuit 56, a second load circuit 58 and a third load circuit 60.
  • the control of the compressor 10 and the compressed air treatment system 54 is controlled by a control unit 50, which determines the sensors relevant to the control via sensors 62, 64, 66 and 68.
  • the cooling line 52 serves to cool the still highly heated compressed air generated by the compressor 10 to a temperature which, for example, is smaller by 5 ° C. than the maximum temperature of about 80 ° C. permissible for efficient drying.
  • a clutch may also be provided, wherein the control of the clutch can then be synchronized, for example, with the control of the dead space valve.

Landscapes

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

Claims (6)

  1. Compresseur (10) de production d'air comprimé, notamment pour un véhicule automobile, comprenant des soupapes d'entrée d'air et de sortie d'air et une soupape (12) à espace mort à actionnement électrique pour décharger le compresseur (10) en-dehors d'une phase où de l'air comprimé est véhiculé, caractérisé en ce qu'il est prévu un trou (16) de décharge dans un corps (14) de la soupape (12) à espace mort, pour décharger en pression le corps (14) de la soupape dans chaque position de commutation de la soupape (12) à espace mort.
  2. Compresseur (10) suivant la revendication 1, caractérisé en ce que la soupape (12) à espace mort comprend un électroaimant (18) et une bobine (20).
  3. Compresseur (10) suivant la revendication 1, caractérisé en ce que la soupape (12) à espace mort comprend un actionneur (22) piézoélectrique.
  4. Procédé pour faire fonctionner un compresseur (10) suivant la revendication 1, dans lequel, pour décharger le compresseur, on ouvre en-dehors d'une phase où de l'air comprimé est véhiculé une soupape (12) à espace mort que l'on actionne électriquement, caractérisé en ce que l'on décharge en pression le corps (14) de la soupape (12) à espace mort par un trou (16) de décharge dans chaque position de commutation de la soupape (12) à espace mort.
  5. Procédé suivant la revendication 4, caractérisé en ce que, lorsque l'on actionne la soupape (12) à espace mort, une variation du courant électrique dans une bobine (20) induit un déplacement de l'électroaimant (18).
  6. Procédé suivant la revendication 4 ou 5, caractérisé en ce que l'on actionne la soupape (12) à espace mort, on induit une variation d'un champ électrique, ce qui donne une variation en longueur d'un actionneur (22) piézoélectrique.
EP09748037.0A 2008-10-30 2009-10-28 Compresseur pour la production d'air comprimé destiné à un véhicule à moteur Not-in-force EP2344767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008053998A DE102008053998A1 (de) 2008-10-30 2008-10-30 Kompressor zur Drucklufterzeugung für ein Kraftfahrzeug
PCT/EP2009/007697 WO2010049130A1 (fr) 2008-10-30 2009-10-28 Compresseur pour la production d'air comprimé destiné à un véhicule à moteur

Publications (2)

Publication Number Publication Date
EP2344767A1 EP2344767A1 (fr) 2011-07-20
EP2344767B1 true EP2344767B1 (fr) 2018-12-12

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ID=41534733

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Application Number Title Priority Date Filing Date
EP09748037.0A Not-in-force EP2344767B1 (fr) 2008-10-30 2009-10-28 Compresseur pour la production d'air comprimé destiné à un véhicule à moteur

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Country Link
EP (1) EP2344767B1 (fr)
DE (1) DE102008053998A1 (fr)
WO (1) WO2010049130A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT513603B1 (de) 2013-08-08 2014-06-15 Hoerbiger Kompressortech Hold Hubkolbenkompressor mit Kapazitätsregelung
AT514591B1 (de) * 2013-12-05 2015-02-15 Hoerbiger Kompressortech Hold Zylinderkopf für mehrstufige Kolbenverdichter
DE102016106332A1 (de) * 2016-04-07 2017-10-12 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressor mit Energiesparvorrichtung und Verfahren zum Entlasten des Kompressors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605557A1 (de) * 1996-02-15 1997-08-21 Rexroth Mannesmann Gmbh Ventilpatrone

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT152717B (de) * 1936-08-26 1938-03-10 Hoerbiger & Co Verfahren und Vorrichtung zur stufenlosen Regelung von Verdichtern.
DE721745C (de) * 1936-09-04 1942-06-17 Hoerbiger & Co Vorrichtung zur stufenlosen Leistungsregelung von Verdichtern
AT265498B (de) * 1964-07-17 1968-10-10 Burckhardt Ag Maschf Einrichtung zur stufenlosen Regulierung der Förderleistung an Kolbenkompressoren
DE8229471U1 (de) * 1982-10-21 1984-03-29 Robert Bosch Gmbh, 7000 Stuttgart Druckluftfuellvorrichtung fuer druckluftspeicher
US4685489A (en) * 1984-04-13 1987-08-11 Copeland Corporation Valve assembly and compressor modulation apparatus
DE8809822U1 (de) * 1988-08-02 1988-10-06 Fa. Bösl Medizintechnik, 5100 Aachen Entlastungsventil
DE3909531A1 (de) 1988-12-08 1990-06-13 Knorr Bremse Ag Einrichtung zur leistungseinsparung bei kolbenverdichtern, insbesondere fuer die drucklufterzeugung in kraftfahrzeugen
FR2660981B1 (fr) * 1990-04-12 1992-08-14 Sextant Avionique Vanne a debit variable commandee electriquement.
DE10140200A1 (de) * 2001-08-16 2003-02-27 Bosch Gmbh Robert Hubmagnetanordnung zum Antrieb eines hydraulischen Ventils
DE102007034048B3 (de) * 2007-07-20 2008-06-12 Hoerbiger Automatisierungstechnik Holding Gmbh Piezoelektrisches Ventil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605557A1 (de) * 1996-02-15 1997-08-21 Rexroth Mannesmann Gmbh Ventilpatrone

Also Published As

Publication number Publication date
WO2010049130A1 (fr) 2010-05-06
DE102008053998A1 (de) 2010-05-06
EP2344767A1 (fr) 2011-07-20

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