WO2001020208A1 - Soupape - Google Patents

Soupape Download PDF

Info

Publication number
WO2001020208A1
WO2001020208A1 PCT/DK2000/000498 DK0000498W WO0120208A1 WO 2001020208 A1 WO2001020208 A1 WO 2001020208A1 DK 0000498 W DK0000498 W DK 0000498W WO 0120208 A1 WO0120208 A1 WO 0120208A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
closure piece
housing
valve closure
chamber
Prior art date
Application number
PCT/DK2000/000498
Other languages
German (de)
English (en)
Inventor
Fester Garm
Original Assignee
Danfoss A/S
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 Danfoss A/S filed Critical Danfoss A/S
Priority to AU69848/00A priority Critical patent/AU6984800A/en
Publication of WO2001020208A1 publication Critical patent/WO2001020208A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0146—Control of flow without auxiliary power the in-line sensing element being a piston or float without flexible member or spring

Definitions

  • the invention relates to a valve with a variable output flow, in which changes in the fluid pressure have no influence on the current value, with a housing having an inlet and an outlet, in which a valve closure piece against the force of a spring and under pressure can be placed on a valve seat via a valve actuating shaft connected to the valve closure piece.
  • a known flow control valve of this type (EP 0 677 708 A2) is used in hot water heating systems to compensate for changes in the differential pressure at the radiator valves and thus the flow through the radiator, so that the influence of such changes on the value set on the radiator valve is prevented. Such changes can be caused, for example, by adjusting the control valves in the hot water heating system from time to time, for example depending on the water temperature.
  • a measuring orifice or a further control valve is provided in addition to the control valve for detecting such pressure or flow changes in the flow line, at which the differential pressure is measured and taken to adjust the control valve actuated by a controller and via a membrane acts on the valve stem of the control valve.
  • the control valve then acts in conjunction with the measuring orifice or the additional control valve, at which the differential pressure is measured, and the membrane as a flow control valve.
  • a flow control valve is complex and requires considerable additional effort, including installation work, with regard to the measuring orifice and the additional control valve.
  • the invention is based on the object of specifying a flow control valve of the type mentioned at the outset, the construction and assembly of which are simpler and whose space requirement is less.
  • this object is achieved in that the surface of the valve closure piece facing away from the valve seat determines the area of a movable wall of a chamber in the housing and is larger than the cross-sectional area within the valve seat, and in that the chamber alone via at least one channel penetrating the valve closure piece with the entrance of the Housing is connected.
  • the valve closure piece can have approximately the shape of a truncated cone. Compared to a valve closure piece in the form of a stepped piston, it then has sufficient strength in spite of possibly several through channels.
  • a frustoconical wall adjoins the valve seat and extends largely parallel to the frustoconical peripheral surface of the valve closure piece.
  • valve closure piece can then be connected directly to the one end face of a bellows forming the chamber, which bellows is arranged between the valve closure piece and the valve actuation shaft, just like the valve closure piece, without lateral contact with the housing.
  • FIG. 1 is a view of a first embodiment of a flow control valve according to the invention in the closed state, partly in axial section,
  • Fig. 2 shows the same embodiment as that shown in Fig. 1, but in the closed
  • FIGS. 1 to 3 shows a view of a second exemplary embodiment of a flow control valve according to the invention, partly in axial section.
  • the valves shown in FIGS. 1 to 3 are flow control valves with variable output current, in which changes in the inlet pressure or fluid pressure on the inlet side have no influence on the current value and which can be used in a heating system.
  • the flow control valve shown in FIGS. 2 and 3 has a housing 1 which consists of two interconnected parts 2 and 3 and has an inlet 4 and an outlet 5.
  • a valve closure piece 6 against the force of a spring 7, here a return spring, and under a differential pressure of the flow 8 via a valve actuation shaft 9 connected to the valve closure piece 6 on a valve seat
  • the chamber 11 determines the area of a movable wall of a chamber 12 in the housing 1 formed by the valve closure piece 6 and is larger than the cross-sectional area A within the valve seat 10.
  • the chamber 12 is alone via at least one channel 13 with the inlet 4 passing through the valve closure piece 6 of the housing 1 connected.
  • the valve closure piece 6 has approximately the shape of a truncated cone and is attached to one end of a rod 14.
  • the valve actuating shaft 9 is slidably guided through a stuffing box 15 screwed into the housing 1 and is supported with its inner end on the other end of the rod 14.
  • the spring 7 is supported on the one hand on a plate 17 provided with through holes 16 and on the other hand on a collar 18 of the rod 14.
  • the rod 14 is also slidably guided through a central hole in the plate 17.
  • the plate 17 is supported on one in one inner annular groove of the chamber 12 from the circlip 19 used.
  • a sealing ring 20 which surrounds the rod 14 and which, for sealing the chamber 12 when the stuffing box 15 is replaced, on a shoulder 21 of the chamber 12 designed as a stepped bore under the pressure of the spring 7 is applied.
  • valve closure piece 6 is guided in the chamber 12 on its cylindrical inner side so as to be axially displaceable in a tightly fitting manner.
  • the valve closure piece 6 is provided on its circumference with a circumferential sealing lip 22, which is thereby designed to be elastically resilient that immediately next to the sealing lip 22 in the surface 11 of the metal existing valve closure piece 6 a circumferential groove 23 is formed.
  • the valve closure piece 6 can also have two separately produced parts, one part of which has the sealing lip 22 and the other has the sealing surface facing the valve seat 10 and which are connected by a connecting part, so that they have the same function as have the valve closure piece 6 shown.
  • the additional force exerted by the pressure increase on the valve closure piece 6 is therefore greater in the closing direction than in the opening direction of the valve, so that the valve closure piece 6 again moves somewhat further in the closing direction and thus the flow, which is initially somewhat larger due to the pressure rise, is reduced again and ultimately in accordance with the the setting made via the valve stem 9 is maintained.
  • the flow can be adjusted via the valve actuation shaft 9 in various ways, e.g. by means of a temperature controller (thermostat attachment) that adjusts the flow in a radiator depending on the ambient temperature so that the temperature remains largely constant, or by hand using a threaded spindle with a rotary handle.
  • a temperature controller thermostat attachment
  • the chamber 12 is not formed by the housing 1, but by a bellows 25 made of metal, which is attached with its side facing the valve seat 10 to the side of the valve closure piece 6 facing away from the valve seat 10, for example by a Soldered connection 26. At the other end, the bellows 25 is closed by a plate 27, on the outside of which the valve actuation shaft 9 is seated.
  • the valve seat 10 closes a frustoconical wall 28, which extends largely parallel to the frustoconical U front surface of the closure member 6, which is also largely frustoconical in this case.
  • the channel 13 passes through the valve closure piece 6 in the middle thereof and at the same time a socket 29 on the side of the valve closure piece 6 facing away from the valve seat 10.
  • the socket 29 is tightly surrounded by an opening 30 in the bottom of the bellows 25.
  • a tube piece 31 is arranged coaxially to the connection piece 29 as a spacer with passage openings 32 in its edge abutting the plate 27.
  • the spring 7 is supported at one end in turn on the locking ring 19 inserted in the housing part 3 and presses with its other end against the one end of an intermediate piece 33, the other end of which is seated in a bore 34 of the valve closure piece 6 which continues the channel 13.
  • the intermediate piece 33 has through-channels which lead on the one hand from the inlet 4 into an annular space 35 between the valve closure piece 6 and the intermediate piece 33 and on the other hand into the channel 13.
  • the intermediate piece 33 can, for example, also be designed simply as a sheet metal part which allows the stream 8 to flow past it.
  • the effective area 11 of the movable wall of the chamber 12 formed in this case by the bottom of the bellows 25 is in turn larger than the cross-sectional area A within the valve seat 10.
  • a pressure increase in the inlet 4 therefore also acts on the intermediate piece 33 via the channels in or outside and the channel 13 and the pipe section 31 in the chamber 12 and thus on the surface 11 of the valve closure piece 6 facing away from the valve seat 10 when the valve is open in the sense of a Closing movement of the valve closure piece 6, so that an increase in the flow due to the pressure increase through the open valve is largely compensated again.
  • valve closure piece 6 and the bellows 25 do not lie against the inside of the housing 1, so that the movement of the valve closure piece 6 and the bellows 25 takes place largely smoothly.
  • This valve is therefore also able to compensate for very small pressure fluctuations between inlet 4 and outlet 5.
  • the cross-sectional area of the gap between the wall 28 and the valve closure piece 6 in the flow direction increases due to the increasing circumference of the wall 28 on the one hand and the valve closure piece 6 on the other hand.
  • the annoying noise caused by the sudden drop in pressure when the valve is opened in the case of a valve which is not provided with such a conical outlet channel is thereby largely avoided.
  • the flow is diverted to the outlet 5, from where it flows into a pipeline 36.
  • the housing 1 has a further ring-shaped housing part 37, which is screwed on the one hand to the housing part 2 and on the other hand with a connecting piece 38 of the pipeline 36 and is sealed against it by sealing rings.
  • the housing part 3 is placed in a sealed manner on an end of a flow line 39 which is tightly inserted into the pipe 36 and in this way is indirectly connected to the housing parts 2 and 37 via the pipe 36 and the connecting piece 38.
  • the stuffing box 15 is in turn screwed into the housing 1 and at the same time enables the adjustment of the Kv value of the flow control valve by being supported on the plate 27.
  • a socket 40 of the plate 27 surrounding the inner end of the stuffing box 15, by abutment on the sealing ring 20, seals the interior of the housing 1 when the stuffing box 15 is replaced can be operated by hand using the twist grip.
  • the outlet pressure could also have the same function.
  • the same principle could also be applied, for example, to a cooling valve.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Abstract

L'invention concerne une soupape à écoulement de sortie variable, notamment une soupape de régulation de débit, dans laquelle des variations de la pression d'admission n'influent pas sur la valeur du débit et qui peut être utilisée par exemple dans un système de chauffage. Cette soupape présente un boîtier (1) comportant une entrée (4) et une sortie (5). Dans ce boîtier (1), un élément d'obturation de soupape (6) peut être placé sur un siège de soupape (10) par l'intermédiaire d'une tige d'actionnement de soupape (9) reliée à l'élément d'obturation (6) à l'encontre d'un ressort de rappel (7) et sous l'effet d'une différence de pression de l'écoulement (8). L'invention vise à simplifier au maximum la conception de cette soupape. A cet effet, la surface (11), opposée au siège de soupape (10), de l'élément d'obturation (6), définit la surface d'une paroi mobile d'une chambre (12) dans le boîtier (1), et présente des dimensions supérieures à la surface (A) de la section transversale à l'intérieur du siège de soupape (10). De plus, seule la chambre (12) communique avec l'entrée (4) du boîtier (1) par l'intermédiaire d'au moins un canal (13) traversant l'élément d'obturation (6).
PCT/DK2000/000498 1999-09-16 2000-09-11 Soupape WO2001020208A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69848/00A AU6984800A (en) 1999-09-16 2000-09-11 Valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944366.1 1999-09-16
DE1999144366 DE19944366B4 (de) 1999-09-16 1999-09-16 Ventil

Publications (1)

Publication Number Publication Date
WO2001020208A1 true WO2001020208A1 (fr) 2001-03-22

Family

ID=7922211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2000/000498 WO2001020208A1 (fr) 1999-09-16 2000-09-11 Soupape

Country Status (3)

Country Link
AU (1) AU6984800A (fr)
DE (1) DE19944366B4 (fr)
WO (1) WO2001020208A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6648846B2 (en) 2000-06-23 2003-11-18 Mcneil-Ppc, Inc. Applicator for catamenial device having improved gripper end
CN102654197A (zh) * 2012-04-01 2012-09-05 李好生 一种排料调节阀
CN114151589A (zh) * 2021-11-29 2022-03-08 清华大学 一种阀门

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045063B8 (de) * 2006-09-21 2010-02-11 Peter Dipl.-Ing. Behr Zum Einbau in ein Ventilgehäuse vorgesehene Vorrichtung zur Mengenbegrenzung, für den Heizungsbereich vorgesehenes Thermostatventil sowie für den Sanitärbereich vorgesehenes Vorabsperrventil
DE102015225642A1 (de) * 2015-12-17 2017-06-22 Continental Automotive Gmbh Ventil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623814A1 (de) * 1986-07-15 1988-01-21 Jaeth Michael Thermostatventil
EP0677708A2 (fr) * 1994-04-12 1995-10-18 Landis & Gyr Technology Innovation AG Chauffage à eau chaude

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214134A (en) * 1962-08-24 1965-10-26 American Radiator & Standard Balanced fluid valve
CH485156A (fr) * 1968-12-23 1970-01-31 Lucifer Sa Valve à commande électromagnétique, notamment valve à vide
US3635247A (en) * 1970-01-28 1972-01-18 Honeywell Inc Cage valve with multipurpose ring
US4137934A (en) * 1977-02-25 1979-02-06 Fisher Controls Company Valve construction
DE8235864U1 (de) * 1982-12-21 1983-06-16 Metallwerke Neheim, Goeke & Co Kg, 5760 Arnsberg Differenzdruckregler
US5135198A (en) * 1991-05-30 1992-08-04 The Babcock & Wilcox Company Externally adjustable flow restriction control for poppet valves
DE4303483C2 (de) * 1993-02-06 1996-04-18 Iwk Regler Kompensatoren Regler
US5386965A (en) * 1993-06-04 1995-02-07 Ber-Lo Manufacturing Company, Inc. High pressure flow valve with pressure assist valve seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623814A1 (de) * 1986-07-15 1988-01-21 Jaeth Michael Thermostatventil
EP0677708A2 (fr) * 1994-04-12 1995-10-18 Landis & Gyr Technology Innovation AG Chauffage à eau chaude

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6648846B2 (en) 2000-06-23 2003-11-18 Mcneil-Ppc, Inc. Applicator for catamenial device having improved gripper end
CN102654197A (zh) * 2012-04-01 2012-09-05 李好生 一种排料调节阀
CN114151589A (zh) * 2021-11-29 2022-03-08 清华大学 一种阀门
CN114151589B (zh) * 2021-11-29 2022-08-09 清华大学 一种阀门

Also Published As

Publication number Publication date
AU6984800A (en) 2001-04-17
DE19944366A1 (de) 2001-04-12
DE19944366B4 (de) 2005-11-10

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