EP3074631A1 - Tête de cylindre pour compresseur d'air - Google Patents

Tête de cylindre pour compresseur d'air

Info

Publication number
EP3074631A1
EP3074631A1 EP14789795.3A EP14789795A EP3074631A1 EP 3074631 A1 EP3074631 A1 EP 3074631A1 EP 14789795 A EP14789795 A EP 14789795A EP 3074631 A1 EP3074631 A1 EP 3074631A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
annular groove
groove
lamella
suction
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
EP14789795.3A
Other languages
German (de)
English (en)
Other versions
EP3074631B1 (fr
Inventor
Wilhelm Haak
Uwe Oppermann
Oliver Winter
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.)
ZF CV Systems Hannover GmbH
Original Assignee
Wabco 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 Wabco GmbH filed Critical Wabco GmbH
Publication of EP3074631A1 publication Critical patent/EP3074631A1/fr
Application granted granted Critical
Publication of EP3074631B1 publication Critical patent/EP3074631B1/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
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/064—Cooling by a cooling jacket in the pump casing
    • 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

Definitions

  • the invention relates to a cylinder head for an air compressor with at least one intake passage for sucking uncompressed air from the environment and at least one pressure channel for discharging the compressed air, and with a cooling water passage, wherein the at least one intake passage by means of at least one arranged on an underside of the cylinder head suction plate is sealed pressure-tight relative to a compression space.
  • Compressors for generating compressed air are used inter alia for the operation of pneumatic brake systems in motor vehicles and rail vehicles.
  • the ambient air sucked in by the compressor should, as far as possible, heat up only slightly before reaching a compression space in the compressor.
  • the heat input into the cylinder head of a compressor is mainly caused by the compression heat released in the compression chamber.
  • the highly heated cylinder head inevitably gives off its heat to the intake air, which is usually conducted in at least one intake passage within the cylinder head to the compression chamber.
  • a particularly intensive heat input into the intake air takes place here in the region of the openings of the intake duct to the suction plate.
  • a reduction of the intake air temperature also brings about a considerable reduction of the compression end temperature with all its advantages sufficiently well known to the person skilled in the art.
  • DE 698 26 381 T2 relates to a piston compressor with a water-cooled cylinder head for the compression of gases or gas mixtures, such as air.
  • the compressor includes a cylinder head having an intake air intake port and an exhaust air exhaust port and partitions.
  • the cylinder head of the gas compressor is made of aluminum, which has a high thermal conductivity.
  • air cooling fins are formed on the inside of the cylinder head and adjacent to these flow galleries in order to release the released compression dissipate heat from the cylinder head into the environment.
  • a plurality of water cooling channels are admitted to the white ⁇ direct optimization of the cooling, and integrally formed fins are disposed within the flow path of the outlet air.
  • the invention has for its object to present a cylinder head for a pneumatic compressor, in which a temperature increase of the intake air when passing an intake passage is largely avoided.
  • the invention is based on the recognition that the undesired heating of the intake air in the region of an intake duct of a cylinder head can be reduced in a passive manner by providing thermal insulation.
  • the invention therefore relates to a cylinder head for an air compressor with at least one intake passage for sucking uncompressed air from the environment and at least one pressure channel for discharging the compressed air, and with a cooling water passage, wherein the at least one intake passage arranged by at least one on an underside of the cylinder head Suction lamella against a compression chamber is closed pressure-tight.
  • the at least one intake channel is surrounded in sections by a substantially lamellar, substantially concentric annular groove.
  • this design ensures that a temperature rise of the outside air flowing into the intake duct is kept low. Due to the poor heat transfer value of the suction plate, there is also a thermal insulation of the intake channel with respect to the compression space.
  • the thermally insulating annular groove leads in comparison to a conventional cylinder head to a marked reduction of the compression end temperature or the temperature of the compressed air discharged via the pressure channel of the air compressor, and consequently to a much lower oil consumption and to a reduced coking tendency of a equipped with the cylinder head according to the invention air compressor. Due to the resulting lower air volume, Lumenstrom can also reduce the necessary mechanical drive power of the compressor with unchanged compression power.
  • the annular groove is at least partially filled with a thermally insulating medium.
  • a thermally insulating medium may be, for example, air, or a porous, preferably closed-cell plastic.
  • the annular groove has two substantially mutually parallel groove walls. Due to the substantially rectangular cross-sectional geometry of the annular groove, the manufacturing process thereof is simplified.
  • the annular groove can be introduced, for example by milling in a cylinder head produced in advance in a casting process.
  • the groove bottom of the annular groove has a substantially semicircular cross-sectional geometry.
  • the annular groove has an opening which faces away from the at least one suction lamella.
  • the opening of the annular groove is oriented against the flow direction of the intake air via the intake channel, thereby resulting in a faster exchange of air in the annular groove.
  • the air in the annular groove always has a comparatively low temperature.
  • the groove bottom of the annular groove has at least one opening in the direction of the at least one suction lamella.
  • the annular groove has an opening which faces the at least one suction lamella.
  • the temperature of an existing between the annular groove and a cooling water channel (thin) material web corresponds approximately to the temperature of the cooling water in the adjacent cooling water channel.
  • the distance can be reduced to a few millimeters, as long as sufficient mechanical strength of the cylinder head is still given.
  • the annular groove has at least two openings which are alternately directed away from the at least one suction lamella or facing the at least one suction lamella. Due to the alternately oppositely oriented openings of the annular groove, the flow of oil and / or condensate is supported. Thus, oil and / or condensate, which has accumulated in a portion of the annular groove, the opening of the suction lamella away or upwardly against the flow direction of the sucked air, in an adjacent portion of the annular groove with an oppositely oriented, that is one after down, be discharged in the flow direction oriented opening.
  • At least one control channel is at least partially coverable by means of at least one sliding lamella for power regulation of the air compressor, and that the annular groove has an opening facing the at least one suction lamella and the at least one sliding lamella, wherein the annular groove at least in sections runs in the region of at least one control channel.
  • the cylinder head is preferably formed of aluminum or an aluminum alloy.
  • the cylinder head has excellent thermal properties, in particular via a good thermal conductivity, for optimum support of the direct or active effect of integrated into the cylinder head water cooling.
  • the direct or active cooling system is hereby supported by the indirect or passive cooling acting thermal insulation effect of the annular groove in the region of the intake port.
  • FIG. 1 is a schematic longitudinal sectional view of a first embodiment of a cylinder head
  • FIG. 2 is a schematic longitudinal sectional view of a second embodiment of a cylinder head
  • FIG. 3 is a schematic longitudinal sectional view of a third embodiment of a cylinder head
  • Fig. 4 is a schematic longitudinal sectional view of a fourth embodiment of a cylinder head.
  • Fig. 5 is a schematic representation of the operation of the invention. 1 therefore shows a greatly simplified longitudinal section through a first embodiment of a cylinder head 10 according to the invention.
  • This has inter alia an approximately hollow cylindrical intake passage 12 for sucking the air to be compressed from the environment or another gas or gas mixture, two cooling water channels 14, 16 and a pressure channel, not shown in the drawings, through which the compressed air led out of the cylinder head 10 becomes.
  • suction lamella 20 of the intake passage 12 against a compression chamber 22 pressure-tight shut off.
  • the suction of the air to be compressed from the environment via the intake channel 12 takes place here in a flow direction 24 illustrated by an arrow.
  • the suction channel 12 has a suction lamella near and concentrically surrounding this annular groove 26 which is filled with a thermally insulating medium as best possible, which is here merely exemplary of air from the environment.
  • the annular groove 26 has two substantially mutually parallel groove walls 28, 30, which merge into a groove bottom 32 with an approximately semicircular longitudinal section geometry.
  • An annular opening 34 in the annular groove 26 faces away from the suction lamella 20 or is directed opposite to the flow direction 24.
  • At least one optional opening 36 is embedded in the groove bottom 32.
  • the spatial position of the opening 36 is selected so that the suction lamella 20, regardless of its position, the opening 36 always seals against the compression space 22.
  • the annular groove 26 completely concentrically surrounds the intake duct 12 on an end section 38 facing the suction lamella 20, the intake duct 12 is effectively thermally insulated in the region of this end section 38 of the intake duct 12 with respect to the cylinder head 10, so that an undesirable heat input from the home Cylinder head 10 is severely limited in the over the intake passage 12 into the compression chamber 22 reaching air. Due to the approximately hollow cylindrical geometry of the annular groove 26, there are virtually no relevant thermal bridges between the end portion 38 of the intake passage 12 and the cylinder head 10th
  • the cylinder head 10 is preferably formed from a good thermal conductivity aluminum alloy or pure aluminum, to effectively support the heat dissipation from the cylinder head 10 into the environment and to reduce the risk of thermal stress.
  • cylinder heads made of aluminum alloys or pure aluminum manufacturing technology comparatively easy to manufacture and edit, have a low weight and still achieve sufficient mechanical strength.
  • the thermal insulation between the compression chamber 22 and the intake passage 12 is effected by the suction lamella 20, which has a comparatively poor thermal conductivity or a high thermal insulation capacity, so that the thermal insulation effect of the annular groove 26 is effectively supported or supplemented on the underside.
  • FIG. 2 shows a highly schematic longitudinal sectional view of a second embodiment of a cylinder head 50 according to the invention.
  • the cylinder head 50 has a hollow cylindrical intake passage 52 and two cooling water passages 54, 56.
  • An underside 58 of the cylinder head 50 has a movable suction lamella 60 which closes off the intake passage 52 in a pressure-tight manner against a compression space 62.
  • the ambient air is sucked into the compression space 62 in a flow direction 64 via the intake channel 52 when the suction lamella 60 is opened sufficiently wide.
  • a suction channel near the suction channel 52 approximately sauglamellennahe annular groove 66 has two groove walls 68, 70 and a groove bottom 72 with a semicircular longitudinal section geometry.
  • an opening 74 of the circumferential annular groove 66 of the suction blade 60 is arranged facing, whereby the drainage of the annular groove 66 is facilitated, since therein any accumulating condensate and / or oil residues due to the action of gravity easily can drain away. Due to the preferably completely air-filled annular groove 66, the thermal insulation of an end portion 76 of the intake passage 52 relative to the cylinder head 50, whereby heating of the sucked air from the environment is largely prevented.
  • FIG. 3 shows a schematic longitudinal section of a third embodiment of a cylinder head 90 according to the invention, which represents a combination of the two embodiments of FIGS. 1 and 3.
  • the cylinder head 90 has an intake passage 92 and two cooling water passages 94, 96.
  • a movable suction lamella 100 is arranged, which carries a pressure dense completion of the intake passage 92 with respect to a compression space 102 of the cylinder head 90 in a corresponding position allows.
  • annular groove 106 which concentrically surrounds the intake channel 92 at its lamella-side end section 1 18 effects the thermal insulation of the intake channel 92.
  • the annular groove 106 likewise has two groove walls 108, 110 passing approximately parallel to one another and via a first groove base 112 and a second groove base 1 13 each with a semicircular longitudinal section geometry, which are aligned opposite to each other and with respect to the flow direction 104.
  • the annular groove 106 has two oppositely oriented openings 1 14, 1 16 on.
  • the first opening 1 14 is arranged facing away from the suction plate 100, while the second opening 1 16 of the suction plate 100 is arranged facing away.
  • the orientation of the first opening 14 thus corresponds to the first embodiment of the cylinder head 10 according to FIG. 1, while the second opening 16 is aligned according to the second embodiment of the cylinder head 50 according to FIG.
  • the alternately opposite orientation of the two openings 1 14, 1 16 may be deposited condensate and / or oil from a portion of the circulating
  • Ring groove 106 whose opening 1 14 is directed away from the suction plate 100, in an adjacent portion of the annular groove 106, whose opening 1 16 of the suction plate 100 faces, are derived. As a result, an accumulation of such residues in sections of the annular groove 106 is prevented with an upwardly directed away from the suction louver 100 opening 1 14.
  • the combination of the two first embodiments shown here enables, among other things, a more flexible adaptation of the annular groove 106 to special geometries and space requirements within the cylinder head 90.
  • FIG. 4 shows a fourth embodiment of a cylinder head 130 according to the invention.
  • the cylinder head 130 has an intake passage 132 for sucking in ambient air, a control passage 134 for power regulating an air compressor equipped with the cylinder head 130, and a cooling water passage 136.
  • a suction plate 140 is movably positioned on a lower side 138 of the cylinder head 130. With the help of the suction plate 140, a compression chamber 142 against the suction passage 132 is pressure-tight manner closed.
  • the control channel 134 is at least partially closed by means of a likewise movably arranged on the underside 138 of the cylinder head 130 Schiebelamelle 144, in particular to allow a low-loss power regulation of a provided with the cylinder head 130 air compressor in conjunction with a dead volume or volume not shown here.
  • the suction lamella 140 overlaps at least partially the sliding lamella 144, that is to say the sliding lamella 144 is arranged at least in sections between the underside 138 of the cylinder head 130 and the suction lamella 140.
  • the air drawn in from the surroundings reaches the compression channel 132 with a flow direction 145 and, with a corresponding position of the suction lamella 140, into the compression chamber 142.
  • a circumferential annular groove 146 has two approximately mutually parallel groove walls 148, 150 and a groove bottom 152 with a substantially semicircular longitudinal section geometry.
  • An opening 154 of the annular groove 146 faces the suction lamella 140 or the sliding lamella 144.
  • the annular groove 146 in turn causes the thermal insulation of an end portion 156 of the intake passage 132 relative to the solid cylinder head 130 and with respect to the control channel 134 which extends laterally spaced parallel to the intake passage 132 within the cylinder head 130.
  • annular groove 146 thus follows, with the exception of the trough-shaped recess 160 for the sliding lamella 144 of the control channel 134, essentially Chen the shape of the annular groove 66 in the second embodiment of the cylinder head 50 of FIG. 2nd
  • FIG. 5 shows a schematic representation of the mode of operation of the subject matter with reference to the partial representation of the cylinder head 50 of FIG. 2, which is used here merely by way of example for all other embodiments.
  • the thermally insulating annular groove 66 results in a significant increase in temperature in the intake channel 52 with all undesired side effects.
  • Another, parasitic heat flow 182 emanating from the compression chamber 62 is largely kept away by the suction lamella 60 from the intake passage 52 and the groove wall 70 of the annular groove 66, since the suction lamella 60 compared to the cylinder head 50 has an excellent thermal insulation capacity, which is up to eight times higher as the heat insulating capacity of the cylinder head 50 may be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne une tête de cylindre (10, 50, 90, 130) destinée à un compresseur d'air comportant au moins un conduit d'aspiration (12, 52, 92, 132) servant à l'admission d'air non comprimé venant de l'environnement et au moins un conduit de pression servant à délivrer de l'air comprimé, ainsi qu'un conduit d'eau de refroidissement (14, 16, 54, 56, 94, 96, 136), l'au moins un conduit d'aspiration (12, 52, 92, 132) pouvant être fermé de manière étanche à la pression par rapport à une chambre de compression (22, 62, 102, 142) au moyen d'au moins une lame d'aspiration (20, 60, 100, 140) disposée sur un côté inférieur (18, 58, 98, 138) de la tête de cylindre. Selon l'invention, l'au moins un conduit d'aspiration (12, 52, 92, 132) est entouré par endroits par une rainure annulaire (26, 66, 106, 146) sensiblement concentrique proche de la lame d'aspiration. Cela permet avantageusement de réduire l'échauffement de l'air s'écoulant de l'environnement jusque dans la tête de cylindre (10, 50, 90, 130) via l'au moins un conduit d'aspiration (12, 52, 92, 132).
EP14789795.3A 2013-11-26 2014-10-23 Culasse pour compresseur d'air Active EP3074631B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013019812.7A DE102013019812A1 (de) 2013-11-26 2013-11-26 Zylinderkopf für einen Luftverdichter
PCT/EP2014/002867 WO2015078545A1 (fr) 2013-11-26 2014-10-23 Tête de cylindre pour compresseur d'air

Publications (2)

Publication Number Publication Date
EP3074631A1 true EP3074631A1 (fr) 2016-10-05
EP3074631B1 EP3074631B1 (fr) 2019-04-24

Family

ID=51799073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14789795.3A Active EP3074631B1 (fr) 2013-11-26 2014-10-23 Culasse pour compresseur d'air

Country Status (4)

Country Link
EP (1) EP3074631B1 (fr)
CN (1) CN105793566B (fr)
DE (1) DE102013019812A1 (fr)
WO (1) WO2015078545A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017116870B3 (de) * 2017-07-21 2019-01-24 Voith Patent Gmbh Hubkolbenmaschine mit Kühleinrichtung
DE102018120027A1 (de) * 2018-08-17 2020-02-20 Voith Patent Gmbh Zylinderkopf für einen Kompressor
CN110552863A (zh) * 2019-09-11 2019-12-10 西安交通大学 一种隔膜压缩机缸盖冷却结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7422031U (de) * 1976-01-08 Robert Bosch Gmbh, 7000 Stuttgart Zylinderdeckel für einen luftgekühlten Kompressor
DE1711400U (de) * 1955-02-24 1955-11-24 Motoren Werke Mannheim Ag Luftgekuehltes druckventil fuer luftverdichter.
AT345427B (de) * 1975-12-09 1978-09-11 List Hans Wassergekuehlter kompressor
US5860800A (en) * 1994-10-13 1999-01-19 Wabco Vermogensverwaltungs Gmbh Compressor cylinder head having a partition
DE19535079C2 (de) * 1994-10-13 2001-02-22 Wabco Gmbh & Co Ohg Verdichter
US6116874A (en) 1997-07-26 2000-09-12 Knorr-Bremse Systems For Commercial Vehicles Limited Gas compressors
DE102005012202A1 (de) * 2005-03-15 2006-09-28 Itg Kompressoren Gmbh Zylinderkopf für einen mehrstufigen Kolbenverdichter
FR2925623B1 (fr) * 2007-12-21 2013-08-16 Danfoss Commercial Compressors Culasse pour compresseur frigorifique a piston, unite de compression comprenant cette culasse, et compresseur frigorifique a piston comprenant cette unite de compression
DE102010011550A1 (de) * 2010-03-15 2011-09-15 Eduard Hilberer Druckölkühlgeschmierte Drucklufterzeugung für ein Fahrzeug insbesondere für ein Hybridfahrzeug
AT509082B1 (de) * 2010-04-15 2011-06-15 Hoerbiger Kompressortech Hold Zylinderkopf für bremsluftverdichter
SG185858A1 (en) * 2011-06-01 2012-12-28 Panasonic Corp A valve plate for a compressor

Also Published As

Publication number Publication date
EP3074631B1 (fr) 2019-04-24
CN105793566A (zh) 2016-07-20
CN105793566B (zh) 2018-04-27
DE102013019812A1 (de) 2015-05-28
WO2015078545A1 (fr) 2015-06-04

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