US20050031476A1 - Single-step or muti-step piston compressor - Google Patents

Single-step or muti-step piston compressor Download PDF

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Publication number
US20050031476A1
US20050031476A1 US10/479,273 US47927304A US2005031476A1 US 20050031476 A1 US20050031476 A1 US 20050031476A1 US 47927304 A US47927304 A US 47927304A US 2005031476 A1 US2005031476 A1 US 2005031476A1
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US
United States
Prior art keywords
sealing membrane
valve
overflow
check valve
sealing
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.)
Abandoned
Application number
US10/479,273
Other languages
English (en)
Inventor
Iwan Antufjew
Marko Schrodter
Stefan Beetz
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.)
Continental AG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to CONTINENTAL AG reassignment CONTINENTAL AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEETZ, STEFAN, SCHRODTER, MARKO, ANTUFJEW, IWAN
Publication of US20050031476A1 publication Critical patent/US20050031476A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F04B53/108—Valves characterised by the material
    • 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
    • F04B25/02—Multi-stage pumps of stepped piston type
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/0404—Details, component parts specially adapted for such pumps
    • F04B27/0451—Particularities relating to the 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
    • F04B39/10—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
    • 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
    • F04B53/1075—Valves; Arrangement of valves the valve being a flexible annular ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the Invention relates to a piston compressor according to the preamble of the claim 1 .
  • piston compressors are employed in all technical fields, where there exists a need for compressed air. Primarily such piston compressors are applied in the vehicle industry for pneumatic suspension and/or air damping.
  • Such a piston compressor in a two-stage construction is for example described in the German printed Patent document DE 197 15 291 A1.
  • This piston compressor comprises a compressor casing, where a cylindrical low-pressure chamber with a larger low-pressure piston and a cylindrical high-pressure chamber with the smaller high-pressure piston are formed in the compressor casing.
  • the low-pressure chamber and the high-pressure chamber are disposed on a common axis and the low-pressure piston and the high-pressure piston are formed to a single piece pressure piston with a common piston rod.
  • the low-pressure chamber is furnished with an intake with an intake check valve
  • the high-pressure chamber is furnished with an outlet with a discharge check valve and the two pressure chambers are connected by an overflow channel, wherein an overflow check valve is disposed in the overflow channel.
  • a crank pin of a crankshaft engages with the common piston rod of the low-pressure piston and of the high-pressure piston at a right angle alignment, wherein the crankshaft is driven for example by an electric motor and wherein the crankshaft transforms the rotary motion of the crankshaft into a linear motion at the single piece pressure piston. An oscillating motion results at the pressure piston from this linear motion.
  • the intake check valve, the discharge check valve, and the overflow check valve have sealing disks made of spring steel, wherein the sealing disks of the spring steel are attached by a middle screw as is the case with the intake check valve and with the overflow check valve and wherein the sealing disks of spring steel cover in a sealing way several flow channels disposed on a partial circle, or which sealing disks are held by a sideways staggered screw as is the case with the discharge check valve and which sealing disks seal off a next disposed flow channel.
  • the object is obtained by the characterizing features of claim 1 .
  • the new piston compressor eliminates the recited disadvantages of the state-of-the-art.
  • FIG. 1 a two-stage piston compressor in the schematic sectional presentation
  • FIG. 2 a detail of the piston compressor with the presentation of the intake check valve
  • FIG. 3 a detail of the piston compressor with the presentation of the overflow check valve and of the discharge check valve
  • FIG. 4 a top planar view of the valve inserts belonging to the overflow check valve.
  • a two-stage piston compressor comprises in its main components the piston compressor proper 1 , a drive motor 2 and an airdrying unit 3 .
  • a valve casing 4 with a cylindrical inner chamber stepped in its diameter belongs to the piston compressor 1 , wherein the cylindrical inner chamber is subdivided into a low-pressure chamber 5 with a larger diameter and in a high-pressure chamber 6 with a smaller diameter.
  • the low-pressure chamber 5 is sealingly closed to the outside with a valve casing floor 7 and the high-pressure chamber 6 is sealingly closed to the outside with a valve casing cover 8 .
  • the valve casing cover 8 is connected to or formed as a single piece with the casing of the airdrying unit 3 .
  • a single piece compressor piston 9 is fitted into the inner chamber of the valve casing 4 , wherein the compressor piston 9 correspondingly comprises a low-pressure piston 10 with a larger diameter, a high-pressure piston 11 with a smaller diameter, and a common piston rod 12 .
  • a crank case is formed in the outer region of the piston rod 12 , wherein the connecting rod 13 of the crankshaft 14 of the drive motor 2 engages in right angle alignment in the crank case.
  • the low-pressure chamber 5 and the high-pressure chamber 6 have connections among each other and toward the outside.
  • An intake check valve 15 is thus disposed according to FIG. 2 in the valve casing floor 7 of the piston compressor 1 , wherein the intake check valve 15 connects the low-pressure chamber 5 to the atmosphere.
  • Several intake openings 16 disposed on a common circular path and a first sealing membrane 17 covering all intake openings 16 belong to the intake check valve 15 .
  • the sealing membrane 17 is fitted into an internally disposed sunk bore hole, wherein the sunk bore hole exhibits a ball shaped or an angular bore hole base.
  • a mushroom like attachment element 18 placed in the middle fixes the sealing membrane 17 and maintains the sealing membrane 17 under a light tension on the base of the sunk bore hole.
  • this tension entered through the attachment element 18 is selected such that the first sealing membrane 17 is capable of rotation in its position and does not protrude and lift off from the intake openings 16 in a pressure balanced state.
  • the sealing membrane 17 and the attachment element 18 are inserted flush into the sunk bore hole in order not to lose any volume of the low-pressure chamber 5 .
  • overflow duct 19 connects the low-pressure chamber 5 and the high-pressure chamber 6 to each other.
  • overflow check valve 20 is disposed in the high-pressure side joining region of this overflow duct 19 according to FIG. 3 , wherein the overflow check valve 20 functionally connects to each other or separates from each other the low-pressure chamber 5 and the high-pressure chamber 6 .
  • the joining region of the overflow duct 19 is expanded to a chamber 21 having a cross-section of kidney shape, wherein the kidney shape follows a circular path.
  • the overflow check valve 20 comprises a pot collar 22 made out of plastic, wherein the pot collar 22 with its floor rests on the front face of the high-pressure piston 11 and rests sealingly at the inner wall of the high-pressure chamber 6 .
  • the pot collar 22 is broken out in the region of the overflow duct 19 .
  • a particularly formed valve support 23 which is inserted fittingly into the inner space of the pot collar 22 and which is shown in more detail in FIG. 4 , furthermore belongs to the overflow check valve 20 .
  • This valve support 23 consequently has an outer shape which is directed to the inner chamber of the pot collar 22 .
  • a cylindrical recess 24 is inserted from the side of the high-pressure chamber 6 , wherein the axis of the cylindrical recess 24 is disposed remote from the axis of the high-pressure piston 11 by a certain eccentricity amount. This eccentricity amount as well as the size and the radial position of the cylindrical recess 24 assure, that the cylindrical recess 24 is disposed overlapping with the chamber 25 having kidney shape.
  • the valve support 23 is equipped outside of the cylindrical recess 24 with the distributedly disposed attachment element 25 for a position determining anchoring with the high-pressure piston 11 .
  • a first passage bore hole 26 with a smaller diameter and a second passage bore hole 27 with a larger diameter are disposed in the outer radial region of the cylindrical recess 24 , wherein the first passage bore hole 26 and the second passage bore hole 27 exhibit an equal or different distance to the axis of the cylindrical recess 24 and wherein the first passage bore hole 26 and the second passage bore hole 27 are formed such in their position and their extension that they are disposed overlapping with the chamber 21 having kidney shape of the overflow duct 19 .
  • Further passage bore holes can be employed in the same kind in addition to the first passage bore hole 26 and the second passage bore hole 27 .
  • a freely resting second sealing membrane 28 is fitted with such play into the cylindrical recess 24 that the second sealing membrane 28 is freely movable in the rotary direction and in axial direction and such that the annular intermediate space between the second sealing membrane 28 and the inner wall of the cylindrical recess 24 are suitable for air passage.
  • the neighboring edges of the cylindrical recess 24 and of the second sealing membrane 28 are rounded off or, respectively, performed along broken lines.
  • the cylindrical recess 24 is covered with a stop grid 29 , wherein the stop grid 29 delimits on the one hand the axial stroke of the second sealing membrane 28 and on the other hand furnishes a substantially free passage to the released compressed air stream.
  • the structure of the grid stays is freely selected, wherein the breakouts in the stop grid 29 are provided of such small size that the second sealing membrane 28 cannot become clamped.
  • the breakouts can also be of different size.
  • the high-pressure chamber 6 furthermore exhibits a discharge check valve 30 for connecting the high-pressure chamber 6 to a user line.
  • This discharge check valve 13 according to FIG. 3 is disposed between the valve casing 4 and the valve casing cover 8 and comprises a valve plate 31 clamped at the circumference and a third sealing membrane 32 .
  • the valve plate 31 is sealed relative to the valve casing 4 and relative to the valve casing cover 8 and is furnished with several outlet openings 33 disposed on a common part circle.
  • the third sealing membrane 32 is formed as a ring and correspondingly exhibits a middle flow-through bore hole 34 .
  • the third sealing membrane 32 is held fixedly between the valve plate 31 and the valve casing cover 8 , while the flow-through bore hole 34 is formed with its diameter sufficiently smaller as the partial circle diameter of the diameter of the outlet openings such that the outlet openings 33 are fully covered by the third sealing membrane 32 .
  • the third sealing membrane 32 is built in without constructive pretension such that a sealing force results only from the material specific own proper tension.
  • the first sealing membrane 17 of the intake check valve 15 , the second sealing membrane 28 of the overflow check valve 28 and the third sealing membrane 32 of the discharge check valve 30 are made out of plastic and in particular out of an elastic polymer, which elastic polymer is furnished mainly with a high rupturing strength, which is elastic polymer is highly stable relative to temperature and which elastic polymer exhibits elastic properties with memory effect.
  • a balanced pressure between the low-pressure chamber 5 and the atmosphere occurs at the first sealing membrane 17 at the upper turning point of the motion of the valve piston 9 , whereby the sealing membrane 17 is pressed by the recited forces of the pretensioning onto the intake openings 16 and closes the intake openings 16 .
  • Lowest passage resistances occur based on the optimum selection of the material tensions and the incorporation tensions on the one hand during suctioning in and on the other hand the first sealing membrane 17 closes in a shortest time after the reaching of the upper turning point. This improves substantially the degree of effectiveness of the piston compressor.
  • the low-pressure chamber 5 is decreased in size with the reverse motion of the valve piston 9 such that the tensioned air in the low-pressure chamber 5 is transported under pressure through the overflow channel 19 to the high-pressure chamber 6 .
  • the air flows initially into the kidney shaped chamber 21 of the overflow duct 19 and charges from there the second sealing membrane 28 in the region, in the periphery and in the circumference of the first passage bore hole 26 and of the second passage bore hole 27 .
  • a first opening force therewith operates through the first passage bore hole 26 and a second opening force operates through the second passage bore hole 27 onto the second sealing membrane 28 , wherein the first opening force and the second opening force both operate parallel to each other.
  • the freely disposed second sealing membrane 28 is thereby brought into an inclined position and into a radial rotary motion based on the radial force components, wherein the radial rotary motion is directed from the smaller passage bore hole 26 to the larger passage bore hole 27 and wherein the radial rotary motion continuously changes the position of the second sealing membrane 28 relative to the two passage bore holes 26 , 27 .
  • This increases decisively the lifetime of the second sealing membrane 28 , since the load of the material of the sealing membrane 28 is distributed continuously and therewith a premature overloading of only a certain position of the sealing membrane 28 is avoided. Such an overloading leads quickly to rupturing and to a failure of the overflow check valve 20 .
  • the freely disposed second sealing membrane 28 presents only a lowest resistance to the compressed air stream flowing through.
  • a balanced pressure between the low-pressure chamber 5 and the high-pressure chamber 6 prevails again at the lower return point of the motion of the valve piston 9 , wherein the balanced pressure allows the overflow check valve 20 to close.
  • the closing occurs extremely quick as a reaction based on the free and low friction guiding of the second sealing membrane 28 .
  • the compressed air enclosed in the high-pressure chamber 6 is displaced through the discharge check valve 30 with the motion of the valve piston 9 reducing the high-pressure chamber 6 .
  • the compressed air passes the discharge openings 33 released by the third sealing membrane 32 .
  • the discharge check valve 30 again closes in an extremely quick reaction at the upper return point of the motion of the valve piston 9 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
US10/479,273 2001-05-25 2002-05-24 Single-step or muti-step piston compressor Abandoned US20050031476A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20108696U DE20108696U1 (de) 2001-05-25 2001-05-25 Mehrstufiger Kolbenverdichter
GB0119197.2 2001-08-07
PCT/DE2002/001879 WO2002095226A1 (de) 2001-05-25 2002-05-24 Ein- oder mehrstufiger kolbenverdichter

Publications (1)

Publication Number Publication Date
US20050031476A1 true US20050031476A1 (en) 2005-02-10

Family

ID=7957271

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/479,273 Abandoned US20050031476A1 (en) 2001-05-25 2002-05-24 Single-step or muti-step piston compressor

Country Status (5)

Country Link
US (1) US20050031476A1 (de)
EP (1) EP1395754B1 (de)
AT (1) ATE427423T1 (de)
DE (2) DE20108696U1 (de)
WO (1) WO2002095226A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060104844A1 (en) * 2001-05-25 2006-05-18 Iwan Antufjew Multip-stage piston type compressor
US9829248B2 (en) 2011-03-01 2017-11-28 Continental Teves Ag & Co. Ohg Dryer circuit for a pneumatic regulating device of a vehicle
US20190226472A1 (en) * 2017-05-31 2019-07-25 Murata Manufacturing Co., Ltd. Valve and fluid control device
CN111271263A (zh) * 2020-03-30 2020-06-12 四川金星清洁能源装备股份有限公司 一种模块化大排量具有多级压缩结构的隔膜压缩机

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536424A (en) * 1968-11-12 1970-10-27 Hydro Seal Ltd Pump and piston assembly therefor
UST883011I4 (en) * 1970-04-27 1971-02-02 Miller two-stage air compressor
US4289159A (en) * 1978-11-11 1981-09-15 Audi Nsu Auto Union Outlet valve for a gas compressor
US4532685A (en) * 1982-02-23 1985-08-06 Honda Giken Kogyo Kabushiki Kaisha Method of assembling a reciprocating compressor
US4846633A (en) * 1986-11-27 1989-07-11 Mitsubishi Denki Kabushiki Kaisha Variable-capacity scroll-type compressor
US4890637A (en) * 1988-12-12 1990-01-02 Flavorcoffee Co. Inc. One way valve
US5022832A (en) * 1988-11-30 1991-06-11 Holset Engineering Company Ring valve type air compressor
US5658134A (en) * 1995-07-26 1997-08-19 J-Operating Company Compressor with suction valve in piston
US6056439A (en) * 1999-01-28 2000-05-02 Fres-Co System Usa, Inc. High flow/volume valve for flexible packaging
US20060104844A1 (en) * 2001-05-25 2006-05-18 Iwan Antufjew Multip-stage piston type compressor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192953A (en) * 1961-12-18 1965-07-06 Pressure Products Ind Inc Check valves
US3981636A (en) * 1973-07-20 1976-09-21 Toyota Jidosha Kogyo Kabushiki Kaisha Diaphragm vacuum pump
US4931000A (en) * 1989-03-02 1990-06-05 Gilian Instrument Corp. Double acting diaphragm air pump
DE3940099A1 (de) * 1989-12-04 1991-06-06 Wolf Woco & Co Franz J Lamellenventil
IT1287150B1 (it) * 1996-11-11 1998-08-04 Roberto Siviero Pompa alternativa a valvole coassiali in specie per gommoni e simili con azionamento manuale e motorizzato
DE19715291C2 (de) * 1997-04-11 2002-05-16 Pnp Luftfedersysteme Gmbh Zweistufiger Kompressor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536424A (en) * 1968-11-12 1970-10-27 Hydro Seal Ltd Pump and piston assembly therefor
UST883011I4 (en) * 1970-04-27 1971-02-02 Miller two-stage air compressor
US4289159A (en) * 1978-11-11 1981-09-15 Audi Nsu Auto Union Outlet valve for a gas compressor
US4532685A (en) * 1982-02-23 1985-08-06 Honda Giken Kogyo Kabushiki Kaisha Method of assembling a reciprocating compressor
US4846633A (en) * 1986-11-27 1989-07-11 Mitsubishi Denki Kabushiki Kaisha Variable-capacity scroll-type compressor
US5022832A (en) * 1988-11-30 1991-06-11 Holset Engineering Company Ring valve type air compressor
US4890637A (en) * 1988-12-12 1990-01-02 Flavorcoffee Co. Inc. One way valve
US5658134A (en) * 1995-07-26 1997-08-19 J-Operating Company Compressor with suction valve in piston
US6056439A (en) * 1999-01-28 2000-05-02 Fres-Co System Usa, Inc. High flow/volume valve for flexible packaging
US20060104844A1 (en) * 2001-05-25 2006-05-18 Iwan Antufjew Multip-stage piston type compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060104844A1 (en) * 2001-05-25 2006-05-18 Iwan Antufjew Multip-stage piston type compressor
US7351044B2 (en) * 2001-05-25 2008-04-01 Continental Ag Multi-stage piston type compressor
US9829248B2 (en) 2011-03-01 2017-11-28 Continental Teves Ag & Co. Ohg Dryer circuit for a pneumatic regulating device of a vehicle
US20190226472A1 (en) * 2017-05-31 2019-07-25 Murata Manufacturing Co., Ltd. Valve and fluid control device
US10781810B2 (en) * 2017-05-31 2020-09-22 Murata Manufacturing Co., Ltd. Valve and fluid control device
CN111271263A (zh) * 2020-03-30 2020-06-12 四川金星清洁能源装备股份有限公司 一种模块化大排量具有多级压缩结构的隔膜压缩机

Also Published As

Publication number Publication date
ATE427423T1 (de) 2009-04-15
WO2002095226A1 (de) 2002-11-28
DE20108696U1 (de) 2001-08-30
EP1395754B1 (de) 2009-04-01
DE50213413D1 (de) 2009-05-14
EP1395754A1 (de) 2004-03-10

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AS Assignment

Owner name: CONTINENTAL AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ANTUFJEW, IWAN;SCHRODTER, MARKO;BEETZ, STEFAN;REEL/FRAME:015834/0347;SIGNING DATES FROM 20040218 TO 20040415

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION