EP0314665B1 - Plattenventil für Verdichter - Google Patents

Plattenventil für Verdichter Download PDF

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Publication number
EP0314665B1
EP0314665B1 EP88890262A EP88890262A EP0314665B1 EP 0314665 B1 EP0314665 B1 EP 0314665B1 EP 88890262 A EP88890262 A EP 88890262A EP 88890262 A EP88890262 A EP 88890262A EP 0314665 B1 EP0314665 B1 EP 0314665B1
Authority
EP
European Patent Office
Prior art keywords
plate
seating
valve
lifting
valve according
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.)
Expired - Lifetime
Application number
EP88890262A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0314665A1 (de
Inventor
Hans Hrabal
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.)
Hoerbiger Ventilwerke GmbH and Co KG
Original Assignee
Hoerbiger Ventilwerke GmbH and Co KG
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 Hoerbiger Ventilwerke GmbH and Co KG filed Critical Hoerbiger Ventilwerke GmbH and Co KG
Publication of EP0314665A1 publication Critical patent/EP0314665A1/de
Application granted granted Critical
Publication of EP0314665B1 publication Critical patent/EP0314665B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve
    • 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
    • F04B39/1053—Adaptations or arrangements of distribution members the members being Hoerbigen valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7859—Single head, plural ports in parallel
    • Y10T137/7861—Annular head
    • Y10T137/7862—Central post on seat
    • Y10T137/7863—Stop
    • Y10T137/7864—With guide

Definitions

  • the invention relates to a plate valve for compressors, with a seat body, a catcher and at least one closure plate which can be moved back and forth between them, which controls passage channels provided in the seat body and which is assigned a lifting device for keeping the valve open against the closing forces acting on the closure plate is.
  • a plate valve for compressors, with a seat body, a catcher and at least one closure plate which can be moved back and forth between them, which controls passage channels provided in the seat body and which is assigned a lifting device for keeping the valve open against the closing forces acting on the closure plate is.
  • a plate valve is known from EP-A-0242349.
  • Plate valves of this type with a lifting device are known in various designs. They have the task of keeping the valve open against the closing forces acting on the closing plate in order to regulate the delivery rate or to switch the compressor to idle.
  • the lifting device consists of a lifting gripper, which acts with lifting fingers through the through-channels of the valve seat on the closure plate and is actuated by an adjusting device.
  • the lifting gripper which lies with its lifting fingers in the flow channels for the conveyed medium, reduces the free passage cross section of the valve seat, which is disadvantageous when the compressor is fully conveyed.
  • the closure plate is additionally mechanically stressed by the gripper, which with the Gripper fingers only act on the closure plate at spaced locations. It is therefore usually necessary to make the closure plate thicker than in the case of uncontrolled valves, in order to avoid deformations due to the often high closing forces which occur when the medium flows back.
  • Lifting controls are also known in which the closure plate protrudes radially beyond the valve seat and is undercut by radially inwardly projecting extensions of a lifting ring.
  • This lifting ring is actuated by an adjusting device, and designs are also known which act on the lifting ring with a lifting gripper.
  • the adjusting device and the lifting gripper can be provided radially outside the valve seat and the passage channels of the same, so that they themselves do not restrict the passage cross section. However, they take up additional space around the valve, which could otherwise be used for further through-channels.
  • the closure plate must also be rigid and mechanically strong in this design, because the entire lifting forces only act on its edge.
  • the invention has for its object to improve the previously known plate valves with a lifting device so that the mechanical stress on the closure plate by lifting and forcing the valve open is not disadvantageously increased compared to uncontrolled valves.
  • the lifting device consists of a separate seat plate, which is between the seat body and the closure plate in the direction of Stroking movements of the same is arranged displaceably, valve channels aligned with the through-channels in the seat body and corresponding connection openings with the through-openings in the closure plate, and consists of an adjusting device acting on the seat plate, which is connected to the seat plate in order to transmit the lifting force to the seat plate in at least one direction of movement .
  • a separate seat plate is used to lift off the closure plate, by means of which the closure plate is supported over its entire surface area when it is lifted off.
  • the adjusting device does not act directly on the closure plate, but rather transmits the lifting forces to it with the interposition of the seat plate.
  • the seat plate which does not make any movements in the stroke cycle of the compressor, rests on the seat body of the valve in the rest position when the compressor is fully conveyed. It can therefore be made relatively thick and mechanically strong without impairing the functional properties of the valve.
  • the closure plate itself can be made thin and light due to the full support even in normal operation, which is also advantageous from a functional point of view.
  • the lifting device provided according to the invention is particularly suitable for plate valves with a closure plate made of plastic.
  • the adjusting device consists of a lifting gripper known per se, which acts on the seat plate with its gripper fingers.
  • the gripper fingers are arranged in the through-channels of the seat body even with this design. But since it is not immediate, but about the seat plate act on the closure plate, only a few fingers are sufficient, so that the narrowing of the passage cross section of the passage channels remains limited.
  • the actuating device to be formed from at least one screw bolt, preferably arranged in the valve axis, which is guided axially displaceably in the seat body, possibly against the force of a return spring, and acts on the seat plate. No lifting gripper is required.
  • the central central screw which is already present in many valve designs, can be used to transmit the necessary actuating movements.
  • the adjusting device consists of a guide sleeve which is guided axially displaceably on a bolt connected to the seat body, at most against the force of a lifting spring, and at least with the seat plate is in a carry-along connection in one direction.
  • the seat plate can be firmly connected to the catcher, leaving a space for the lifting movements of the closure plate, and can be adjusted together with the latter in the lifting direction.
  • the closure plate When the closure plate is lifted off, the closure plate is not pressed against the catcher in this embodiment, but is locked together with the seat plate at a distance from the seat body, so that the controlled medium can flow freely through the through openings arranged in addition to the valve channels in the seat plate.
  • the closure plate In the direction of flow leading from the seat body to the catcher, the closure plate can also differ from the Lift off the seat plate, which opens up an additional flow cross-section in the seat plate.
  • the seat plate and the catcher can be fastened to the screw bolt according to the invention.
  • the seat plate and the catcher can be fastened to the guide sleeve.
  • the closure plate and any further plates provided in the valve can be centered on the seat plate and optionally guided without friction. All valve parts that move during the function of the valve and can possibly wear out are concentrated on the seat plate.
  • the maintenance of the valve is simplified because only the seat plate and the components attached to it need to be repaired and replaced if necessary.
  • the sealing surface on which the seat plate rests only needs to be reworked on the seat body itself at greater intervals.
  • a guide ring known per se can be arranged in the center of the valve.
  • the movable plates are slidably guided on this guide ring. But it can also be attached to the seat plate in a manner known per se for flexible guide of the closure plate and any other plates from the closure plate. In both cases, the seat plate with the associated closure plate forms a coherent structural unit which can be installed together and removed from the valve.
  • the seat plate is made of a material with good sealing properties, such as plastic.
  • This design not only ensures a secure seal between the closure plate and the seat plate, but also facilitates the seal between the seat body and the seat plate.
  • the plastic seat plate is relatively easy to manufacture. The working noise of the valve is also reduced.
  • FIG. 1 shows an axial central section through a first embodiment of the plate valve according to the invention
  • FIG. 2 shows an axial central section through a variant
  • FIG. 3 shows a section of the valve according to FIG. 2 in another working position
  • FIG. 4 shows the valve Fig. 2 in the open position in the axial central section
  • Fig. 5 shows a detail in another working position
  • Figs. 6 and 7 finally two further variants of the invention, each in the axial central section.
  • the plate valve according to the invention consists of a seat body 1 which has through-channels 2 for the medium conveyed by the compressor and to which a catcher 3 with through-channels 4 is assigned.
  • the valve channels 6 in the seat plate 5 are aligned with the through channels 2 in the seat body 1, whereas the connecting openings 7 are arranged offset and correspond to the through openings 9 in the closure plate 8 and the through channels 4 in the catcher 3.
  • the seat plate 5 lies with one side close to the seat body 1 and forms with its other side a sealing surface for the closure plate 8.
  • the task of the seat plate 5 is to keep the valve open by acting on the closure plate 8 so as to switch off the delivery of the compressor.
  • a lifting device is provided, which consists of the already described seat plate 5 and an actuating device acting on the seat plate for transmitting the lifting force.
  • the adjusting device consists of a lifting gripper 10 which is guided on a central screw bolt 11 arranged in the valve axis in the direction of the lifting movement of the closure plate 8.
  • the lifting gripper 10 acts with gripper fingers 12 on the seat plate 5 and is adjustable against the force of a return spring 13.
  • the actuating force acts in the direction of the arrow labeled 14 on the upper side of the lifting gripper 10.
  • the gripper 10 is in the retracted end position under the action of the return spring 13.
  • the medium entering the valve through the passage channels 2 flows through the valve channels 6 in the seat plate 5, lifts the Closure plate 8 from the seat plate 5 and presses it against the catcher 3.
  • the medium can then leave the valve through the through openings 9 in the closure plate 8 and the through channels 4 in the catcher 3.
  • the closure plate 8 is carried along by the flow forces and moved back onto the seat plate 5 into the position shown, in which the valve is closed.
  • the lifting gripper 10 If a lifting force is exerted on the lifting gripper 10 in the direction of arrow 14 in order to switch off the conveying, the lifting fingers 12 come into contact with the seat plate 5 and lift it off the seat body 1.
  • the closure plate 8 is taken along and pressed against the catcher 3. It can be seen from the drawing that the closure plate 8 is practically supported over its entire surface by the solid seat plate 5 and is therefore not mechanically practically stressed by the lifting process. The closure plate 8 can therefore be made thin despite the proposed lift control.
  • a closure plate made of a material that is not mechanically strong can also be used, e.g. made of plastic. Since the seat plate 5 is sufficiently firm and rigid, only a few gripper fingers 12 are sufficient for lifting, so that the overall gripper fingers 12 do not cause any disadvantageous narrowing of the through channels 2 in the seat body 1.
  • the central screw bolt 11 is used as an adjusting device.
  • the screw bolt 11 is mounted axially displaceably in a bore of the seat body 1 via a bush 16.
  • the sleeve 16 clamps over a washer 17, on which the nut 18 of the bolt 11 acts, the seat plate 5 via a lifting insert 19 against the catcher 3, in which the bolt 11 is firmly screwed.
  • the return spring 13 is arranged in a spring housing 20 and acts on the disc 17.
  • the spring housing 20 also forms an end stop for the disc 17, which limits the lifting movement.
  • Fig. 2 shows the valve in the closed state with the lifting device not activated.
  • the closure plate 8 is held by the closing springs 21 on the sealing surface of the seat plate 5, so that the valve is closed.
  • the closure plate 8 is lifted off the seat plate 5 so that the medium can flow through it when the valve is open.
  • the valve is closed in a known manner.
  • Fig. 4 shows the valve of Fig. 2 in the position in which it is when it is forcibly kept open by the lifting device.
  • the lifting force is exerted there on the central screw bolt 11, which is moved downward against the force of the return spring 13 until the disk 17 strikes the upper edge of the spring housing 20.
  • the seat plate 5 is lifted off the valve body 1 in this position, so that the medium can flow through the valve in both directions.
  • a guide sleeve 22 is arranged displaceably against the force of a lifting spring 23 on the central screw bolt 11 and on a bush 16 clamped thereon.
  • the guide sleeve 22 is firmly connected to the seat plate 5 and the catcher 3. Lifting into the idle position is carried out by the force of the lifting spring 23.
  • Via a pressure bridge 24, the guide sleeve 22 with the valve parts connected to it is pushed back into the working position, a contact force acting continuously in the direction of arrow 25 pushing the valve against the action of the lifting spring 23 in holds the working position.
  • the contact pressure in the direction of arrow 25 can also be used to set the sealing pressure between the seat plate 5 and the seat body 1.
  • the catcher 3 is provided on its outer edge with support webs 28 which additionally support the seat plate 5 and thereby ensure that the seat plate 5 is flat and tight over its entire surface the seat body 1 rests. This can be advantageous for larger valves.
  • a guide sleeve 22 is also provided in the embodiment variant according to FIG. 7, which is firmly connected to the seat plate 5 and the catcher 3. 6, a return spring 13 acts on the guide sleeve 22 in the direction of the seat body 1, so that the valve parts are pressed into their working position when there are no actuating forces acting from outside.
  • a pull plate 26 is provided which is connected to the guide sleeve 22 by means of stud bolts 27. The lifting takes place by tensile forces acting on the tension plate 26, by means of which the seat plate 5 together with the closure plate 8 and the catcher 3 are lifted off the seat body 1 against the force of the return spring 13.
  • the controlled medium can flow through the open valve in the same way as shown in FIGS. 2 to 5.
  • the closure plate is supported in the lifted position practically over its entire area by the lifting device, so that it is practically hardly subjected to bending under the influence of the flow forces.
  • the fittings and attachments required for lifting are largely outside the through-ways through the valve, so that they do not disadvantageously restrict the flow cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Lift Valve (AREA)
EP88890262A 1987-10-28 1988-10-19 Plattenventil für Verdichter Expired - Lifetime EP0314665B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2843/87 1987-10-28
AT0284387A AT396002B (de) 1987-10-28 1987-10-28 Plattenventil fuer verdichter

Publications (2)

Publication Number Publication Date
EP0314665A1 EP0314665A1 (de) 1989-05-03
EP0314665B1 true EP0314665B1 (de) 1991-02-27

Family

ID=3541179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890262A Expired - Lifetime EP0314665B1 (de) 1987-10-28 1988-10-19 Plattenventil für Verdichter

Country Status (6)

Country Link
US (1) US4869291A (enrdf_load_stackoverflow)
EP (1) EP0314665B1 (enrdf_load_stackoverflow)
JP (1) JPH01262384A (enrdf_load_stackoverflow)
AT (1) AT396002B (enrdf_load_stackoverflow)
DE (1) DE3861845D1 (enrdf_load_stackoverflow)
IN (1) IN169064B (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2611236B1 (fr) * 1987-02-20 1991-12-13 Leduc Rene Hydro Sa Pompe hydraulique a pistons axiaux munie de clapets antiretour de refoulement commandes hydrauliquement
AT401281B (de) * 1994-05-11 1996-07-25 Hoerbiger Ventilwerke Ag Abhebegreifer
US5642753A (en) * 1996-07-01 1997-07-01 Dresser-Rand Company Valve unloader assembly
US6206652B1 (en) 1998-08-25 2001-03-27 Copeland Corporation Compressor capacity modulation
CN1395656A (zh) 2000-01-11 2003-02-05 科尔泰克工业产品公司 异型平板阀
IT1314757B1 (it) * 2000-06-30 2003-01-03 Cozzani Mario S R L Valvola, in particolare per compressori, con otturatore a profilosagomato
US6971861B2 (en) * 2003-02-19 2005-12-06 Black Arthur L High speed unloader for gas compressor
AT504695B1 (de) * 2006-12-22 2008-12-15 Hoerbiger Kompressortech Hold Saugventil mit abhebegreifer
US8157538B2 (en) 2007-07-23 2012-04-17 Emerson Climate Technologies, Inc. Capacity modulation system for compressor and method
BRPI1007407A2 (pt) * 2009-01-27 2016-02-16 Emerson Climate Technologies sistema e método de descarregamento para um compressor
US8240330B2 (en) * 2009-08-19 2012-08-14 Southwest Research Institute Squeeze film damper valve for compressor cylinders
DE102013015158A1 (de) * 2013-09-11 2015-03-26 Wabco Gmbh Kompressor
AT514580B1 (de) * 2013-11-21 2015-02-15 Hoerbiger Kompressortech Hold Abhebegreifer für ein Ventilelement eines Verdichterventils
ITUB20150797A1 (it) * 2015-05-22 2016-11-22 Nuovo Pignone Tecnologie Srl Valvola per un compressore alternativo
IT201700066770A1 (it) * 2017-06-15 2018-12-15 Nuovo Pignone Tecnologie Srl Valvola a geometria variabile per compressori alternativi
US11486505B2 (en) * 2018-03-08 2022-11-01 Burckhardt Compression Ag Plate valve and method for operating same
IT201900004978A1 (it) * 2019-04-03 2020-10-03 Nuovo Pignone Tecnologie Srl Una valvola completamente attuata per una macchina alternativa e macchina alternativa comprendente detta valvola

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1479395A (en) * 1922-05-20 1924-01-01 Ingersoll Rand Co Plate-valve lifter
US1475826A (en) * 1922-12-05 1923-11-27 Chicago Pneumatic Tool Co Valve for air pumps and means for actuating same
US1653110A (en) * 1927-01-12 1927-12-20 Ingersoll Rand Co Free-air unloader for compressors
US1769899A (en) * 1928-07-23 1930-07-01 Hardie Tynes Mfg Company Compressor valve
AT153746B (de) * 1936-08-07 1938-07-11 Hoerbiger & Co Selbsttätiges Ringventil.
DE688429C (de) * 1938-04-26 1940-02-20 Hoerbiger & Co Gleichstromverdichter
FR1320449A (fr) * 1962-04-19 1963-03-08 Karl Rud Dienes G M B H Régleur de débit à pression dynamique pour compresseur à piston
US3829253A (en) * 1972-12-27 1974-08-13 S Bunn Plate valve structure
FR2307146A1 (fr) * 1975-04-12 1976-11-05 Bendix Westinghouse Ltd Compresseur pour systeme pneumatique, notamment pour le freinage de vehicules
EP0118416B1 (de) * 1983-03-03 1986-09-10 Hoerbiger Ventilwerke Aktiengesellschaft Abhebevorrichtung für die Verschlussplatte von Verdichterventilen
JPH0756258B2 (ja) * 1985-10-04 1995-06-14 株式会社豊田自動織機製作所 可変容量圧縮機
AT401087B (de) * 1986-04-16 1996-06-25 Hoerbiger Ventilwerke Ag Verfahren zum anpassen eines verdichterventils an unterschiedliche betriebsverhältnisse des verdichters und verdichterventil zur durchführung des verfahrens

Also Published As

Publication number Publication date
US4869291A (en) 1989-09-26
EP0314665A1 (de) 1989-05-03
IN169064B (enrdf_load_stackoverflow) 1991-08-31
JPH01262384A (ja) 1989-10-19
ATA284387A (de) 1992-09-15
AT396002B (de) 1993-05-25
DE3861845D1 (de) 1991-04-04

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