EP1084362A1 - Dispositif de commande de soupape et amplificateur de mouvement afferent - Google Patents

Dispositif de commande de soupape et amplificateur de mouvement afferent

Info

Publication number
EP1084362A1
EP1084362A1 EP99924805A EP99924805A EP1084362A1 EP 1084362 A1 EP1084362 A1 EP 1084362A1 EP 99924805 A EP99924805 A EP 99924805A EP 99924805 A EP99924805 A EP 99924805A EP 1084362 A1 EP1084362 A1 EP 1084362A1
Authority
EP
European Patent Office
Prior art keywords
tapered
intermediary
axis
outlet
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.)
Withdrawn
Application number
EP99924805A
Other languages
German (de)
English (en)
Inventor
Bjarne Frederiksen
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 AS filed Critical Danfoss AS
Publication of EP1084362A1 publication Critical patent/EP1084362A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation

Definitions

  • the invention concerns an operating device for a valve, with a regulating unit, acting, via a motion amplifier, upon a connecting link, which is connectable with the closure member of the valve, the motion amplifier comprising elements with tampered surfaces having different inclinations .
  • the motion amplifier has an amplifying element with two tapered surfaces or ramps, which extend radially or in the circumferential direction, of which one co-operates with an inlet or outlet element, the other with a part fixed on the housing.
  • the motion of the regulating unit can be converted to an increased or reduced motion.
  • the invention is based on the task of providing an additional operating device of the kind described in the introduction.
  • the motion amplifier has:
  • an inlet element displaceable by means of the regulating unit along an axis, with at least one tapered inlet surface
  • b) an outlet element also displaceable along the axis, with at least one tapered outlet surface
  • at least one intermediary element extending vertically to the axis, as well as two tapered intermediary surfaces with different inclinations in relation to the axis, the influence of a transverse force causing the first one to bear on a tapered inlet surface and the second one to bear on a tapered outlet surface.
  • the outlet element performs neither a transversal nor a rotary movement.
  • the motion amplification occurs, as the displacement of the inlet element in the closing direction of the valve causes at least one intermediary element to be laterally displaced, and the outlet element follows under the influence of the return spring acting upon the valve rod of the second tapered intermediary surface.
  • the inlet element has two symmet- rically arranged tapered inlet surfaces and the outlet element has two symmetrically arranged tapered outlet surfaces and that two symmetrically arranged intermediary elements are provided, which are pressed against each other by the transverse force.
  • the inlet element, the intermediary elements and the outlet element are working substantially symmetrically in relation to each other, which permits a construction without fixed guides for the inlet element and the outlet element in the housing.
  • the valve rod is substantially loaded in the axial direction, which ensures a long lasting sealing.
  • the inclination angle in relation to the axis of the second tapered intermediary surface has the same direction, but is smaller than the inclination angle of the first tapered intermediary surface. This gives a amplification in the same direction.
  • the inclination angle in relation to the axis of the second tapered intermediary surface has the opposite direction, but is smaller than the inclination angle of the first tapered intermediary surface.
  • the amplification effect is connected with a movement reversal, so that a heating valve closing at increasing temperature is converted to a refrigeration valve opening at increasing temperature and at the same time being submitted to an amplification factor through the fitting of the motion amplifier.
  • the transverse force is produced by at least one spring.
  • springs for example, helical springs, clip springs, annular springs and the like, but also simple O-rings or elastic ribbons are applicable.
  • springs surrounding both intermediary elements thus pressing them against each other, as this unit will then locate itself centrally in relation to the other parts.
  • the connecting link is formed by the outlet element and has a stop for a valve pin, which is spring loaded in the pressure direction. This gives a particularly small component height.
  • the guide for the intermediary elements is arranged on a head having means for fixing on a valve housing.
  • the inverter is positioned correctly in relation to the valve pin.
  • the head also carries the regulat ⁇ ing unit. This gives an easily operable operating device.
  • the head has a holder on which an upper part containing the regulating unit can be fixed.
  • the head can also be two-part.
  • the holder of the head corresponds to that of the valve housing.
  • the upper part can then optionally be mounted on the valve housing direct or by way of the head carrying the inverter.
  • the motion amplifier is also available as an independent component for an operating device.
  • Fig. 1 a longitudinal section through an operating device according to the invention
  • Fig. 2 a longitudinal section through a modified embodiment
  • Fig. 3 a cross-section along the line A-A in Fig. 2
  • Fig. 4 a cross-section along the line B-B in Fig. 2
  • the operating device 1 in Fig. 1 has a head 2, which, by means of fixing means 3, can be fixed on a valve housing 4 having a corresponding holder 5.
  • the valve housing 4 is only shown intermittently. It shows the usual parts, namely a closure element 6 with a return spring 7 normally holding the valve open, and a valve pin 8, which is led to the outside through a gland seal 9. The parts of the valve are neither true to scale nor shown in their correct position.
  • the head 2 comprises a thermostatically operable regulating unit 10, which is connected with an external sensor element via a capillary tube 11.
  • the ther ostatic system can, for example, work with a liquid-vapour charge or a liquid charge.
  • the regulating unit 10 has a regulating surface 12 and a corrugated pipe 13.
  • a motion amplifier 14 has an inlet element 15 and an outlet element 16, which are displaceable along an axis E corresponding to the movement track of the operating unit 10, and two intermediary elements 17 and 18, which are guided on guides 20 vertically to the axis E and thus vertically to the symmetry level extending between the two intermediary elements 17 and 18.
  • the inlet element 15 is provided with a barrel-shaped extension 21 surrounding the corrugated pipe 13.
  • the inlet element 15 has two tapered surfaces 22 and 23 extending symmetrically to the axis E and thus to the symmetry level, said surfaces extending in this embodiment at an angle of 50° in relation to the symmetry level.
  • the outlet element 16, which at the same time serves as connecting element for connection with the valve pin 8, also has two tapered surfaces 24 and 25, which have in this embodiment an angle of 35° in relation to the axis and thus also to the symmetry level, and which have an opposite inclination direction in relation to the tapered surfaces 22 and 23.
  • the two intermediary elements 17 and 18 have first tapered surfaces 26 and 27 adapted to the tapered surfaces 22 and 23, and second tapered surfaces 28 and 29 adapted to the tapered surfaces 24 and 25.
  • the spring 30 must be so strong that the valve is not able to act upon the system in the opposite direction via the valve pin, and that it can keep the valve closed. The best performance is reached in that the spring force is the same in both directions. This gives an automatic orientation of the parts .
  • the head 102 merely comprises the motion amplifier 114, but has a holder 131, which corresponds to the holder on the valve housing, so that the head 102 can be provided with an upper part containing the regulating unit 10.
  • the upper part can be used optionally with or without inserted motion amplifier 114.
  • the second tapered intermediary surfaces 128 and 129 together with the tapered outlet surfaces 124 and 125 have the same orientation than the first tapered intermediary surfaces 126 and 127 together with the tapered inlet surfaces 122 and 123, but form different angles in relation to the axis E and thus to the symmetry level, here again 50° on the inlet side and 35° on the outlet side.
  • the tapered surfaces should be made of a material with low frictional resistance, so that the motion amplifier quickly follows the movements of the regulating unit.
  • the tapered surfaces do not have to be plane. They can, for example have the shape of a channel or be grooved, which enables an additional guiding.
  • a suspen- sion with oblong holes can be foreseen, which is suspended on the guide 119, 120 or on the inlet element.
  • the motion amplifier cannot only be dimensioned for amplification factors above zero, but also for those below zero.
  • thermo- static regulating unit for example with a heatable expansion material, like an electrically heatable wax cartridge, can be used.
  • the motion ampli- fier is arranged in a head forming an independent unit
  • this head can be built-in or not built- in.
  • other connection forms can be used, for example snap connections.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Temperature-Responsive Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un dispositif (1) de commande de soupape, qui comporte une unité (10) de régulation agissant, par l'intermédiaire d'un amplificateur (14) de mouvement, sur un élément (16) de connexion. L'amplificateur (14) de mouvement comporte des éléments à surfaces (22 à 29) obliques. L'amplificateur de mouvement comporte un élément (15) d'entrée pouvant être déplacé par l'unité (10) de régulation suivant un axe (E), et qui comporte au moins une surface (22, 23) d'entrée oblique; un élément (16) de sortie pouvant également être déplacé suivant l'axe (E), et qui comporte au moins une surface (24, 25) de sortie oblique; et entre ces éléments au moins un élément (17, 18) intermédiaire. Chaque élément (17, 18) intermédiaire s'étend verticalement par rapport à l'axe (E) et comporte deux surfaces (26 à 29) intermédiaires obliques présentant différentes inclinaisons par rapport à l'axe (E), une force transversale agissant de manière à faire appuyer la première (26, 27) de ces surfaces intermédiaires sur une surface (22, 23) d'entrée oblique, et la deuxième (28, 29) sur une surface (24, 25) de sortie oblique. Par conséquent, le mouvement de l'unité (10) de régulation peut être soumis à une amplification sans être influencé par des forces obliques.
EP99924805A 1998-06-12 1999-06-10 Dispositif de commande de soupape et amplificateur de mouvement afferent Withdrawn EP1084362A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19826056A DE19826056C2 (de) 1998-06-12 1998-06-12 Betätigungsvorrichtung für ein Ventil und zugehöriger Hubverstärker
DE19826056 1998-06-12
PCT/DK1999/000318 WO1999066241A1 (fr) 1998-06-12 1999-06-10 Dispositif de commande de soupape et amplificateur de mouvement afferent

Publications (1)

Publication Number Publication Date
EP1084362A1 true EP1084362A1 (fr) 2001-03-21

Family

ID=7870594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99924805A Withdrawn EP1084362A1 (fr) 1998-06-12 1999-06-10 Dispositif de commande de soupape et amplificateur de mouvement afferent

Country Status (4)

Country Link
EP (1) EP1084362A1 (fr)
AU (1) AU4134299A (fr)
DE (1) DE19826056C2 (fr)
WO (1) WO1999066241A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4609178A (en) * 1984-02-02 1986-09-02 Baumann Hans D Diaphragm type control valve
US4549719A (en) * 1984-02-02 1985-10-29 Baumann Hans D Mechanical amplifying means for valves and other devices
DE4206703A1 (de) * 1992-03-04 1993-09-09 Grohe Armaturen Friedrich Mischbatterie
DE4318834C1 (de) * 1993-06-07 1994-11-03 Hansa Metallwerke Ag Sanitäres Thermostatventil
DE4319814C1 (de) * 1993-06-15 1995-02-16 Danfoss As Heizkörper-Thermostatventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9966241A1 *

Also Published As

Publication number Publication date
DE19826056A1 (de) 1999-12-16
DE19826056C2 (de) 2000-05-11
AU4134299A (en) 2000-01-05
WO1999066241A1 (fr) 1999-12-23

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