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WO1996023178A1 - Agencement pour vanne comportant un premier element de fermeture mobile et un second element mobile - Google Patents

Agencement pour vanne comportant un premier element de fermeture mobile et un second element mobile Download PDF

Info

Publication number
WO1996023178A1
WO1996023178A1 PCT/NO1996/000002 NO9600002W WO9623178A1 WO 1996023178 A1 WO1996023178 A1 WO 1996023178A1 NO 9600002 W NO9600002 W NO 9600002W WO 9623178 A1 WO9623178 A1 WO 9623178A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
arrangement
displaceable
valve element
shaft
Prior art date
Application number
PCT/NO1996/000002
Other languages
English (en)
Inventor
Arne Torsvik
Original Assignee
Norin A/S Laboratorie- Og Sykehusinnredning
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
Priority claimed from NO950219A external-priority patent/NO180129C/no
Application filed by Norin A/S Laboratorie- Og Sykehusinnredning filed Critical Norin A/S Laboratorie- Og Sykehusinnredning
Priority to AU45911/96A priority Critical patent/AU4591196A/en
Publication of WO1996023178A1 publication Critical patent/WO1996023178A1/fr

Links

Classifications

    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • F16K3/085—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres the axis of supply passage and the axis of discharge passage being coaxial and parallel to the axis of rotation of the plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/105—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers composed of diaphragms or segments

Definitions

  • Arrangement in a valve comprising a first displaceable valve element and a second stationary element.
  • the present invention relates to an arrangement in a valve, especially in a regulation valve for ventilation, which valve is mounted in a valve housing and comprises one or more valve elements which can be moved between positions which close and open said valve, said valve elements comprising a first displaceable valve element which is adapted to rotate about a centrally mounted shaft in said valve housing, as well as a second station ⁇ ary valve element having substantially the same shape and area as said first displaceable valve element.
  • valve has specifically been deve ⁇ loped in connection with ventilation in vent cabinets, it is to be understood that the valve may generally be app ⁇ licable also as fire valve and regulation valve in air condition installations in buildings.
  • valve structure for regulating the flow of fluids, in which a valve slide can be moved between open and closed position in relation to right opposite each other arranged throughflowing channels in a valve housing.
  • US 1 192 689 there is for example known a valve having circumferential control, which is also the case with the technique according to US 1 986 252.
  • US 3 110 323 relates to a seat valve provided with biassing springs
  • US 3 396 904 relates to a fan valve wherein is used a lever as a regulating means.
  • One object of the present invention is to provide an arrangement in a valve which renders a so to say noise free passage of air when the valve allows air throughput through the valve housing.
  • Yet an object of the invention is to provide a valve which reduces the risk of oscillations when using a plu ⁇ rality of vent cabinets in the same room.
  • a stationary valve element is affixed in the inner wall of the valve housing and at its central inner portion carries the rotating shaft for the displaceable valve elements, as well as a transmission element rotat- ably arranged on said shaft, for example a driving toothed wheel, for driving a displaceable valve element.
  • the invention is to the fact that at the central area of said valve element there is mounted a gear exchange which is driven by a motor, for example a step motor controlled by a control means.
  • a favourable embodiment involves that the gear exchange which is located in the central area of said valve ele ⁇ ments, is driven by a substantially diametrically arrang- ed shaft which is arranged behind an opposite pair of stationary valve element portions.
  • the valve edges are rounded with an appropriate bending radius, for example a bending radius corresponding to the thickness of the valve ele- ment.
  • the driving force can be transmitted directly to the central portion of the rotatable valve, which will involve a symmetrical dis ⁇ tribution of forces, at the same time as one will avoid any play which may occur in other types of operation, for example radial displacement or lever displacement of the valve elements.
  • a control means for controlling such an arrangement can appropriately receive signals about opening or closing of the valve in dependence of previous position of the valve and conditions for controlling the same.
  • control signals can for example be signals from a transmitter, for example a potentiometer which transmits a signal representing the degree of opening of a front hatch in a vent cabinet wherein the arrangement according to the invention can be mounted.
  • control means may receive signals from a differential pressure transmitter which constantly measures the pressure dif ⁇ ference in question across said valve.
  • Fig. 1 illustrates perspectively a segment of a vent cabinet, wherein an arrangement in a valve according to the invention can be applied.
  • Fig. 2 is a schematical block regulation diagram which can be used in the regulation of a valve according to the invention.
  • Fig. 3 is a plan view, on a larger scale, of a displaceable valve element which is included in an em ⁇ bodiment of the arrangement according to the invention.
  • Fig. 4 is a top view of the valve element illustrated in Fig. 3.
  • Figures 7 and 8 illustrate pictures of the inner of the valve housing, wherein is mounted a appropriate embodi ⁇ ment of the arrangement according to the invention, said Figures illustrating the valve in a partly opened posi ⁇ tion, which allows a certain throughput area for fluids or air.
  • Figures 9 and 10 correspond to the pictures of Figures 7 and 8, respectively, and illustrate here the valve in fully open position.
  • Fig. 11 illustrates a picture similarly to Fig. 7, but on a larger scale, specifically in the area of an example of a gear exchange.
  • FIG. 1 there is illustrated a perspective segment of a vent cabinet 1 in which the arrangement according to the invention can be mounted.
  • a vent cabinet 1 may com- prise a working chamber 2 which can be closed by a front hatch 8 as well as means 13 for extraction of air through the working opening 8a and out from the working chamber 2.
  • the lower portion 8r of the front hatch 8, adjoining side portions 8s, 8t of the input opening 8a and the front portion 8u of the bottom 7 of the working chamber 2 can appropriately be rounded inwardly, for example following a section of an eliptic curve, for thereby achieving favourable flow conditions.
  • a rear double wall 3 which at its lower portion 3a defines a slit 4 for a first lami- nated exhaust along the bottom 7 and out through the rear slit 4, especially for heavier air particles, the rear double wall 3 extending upwardly along the rear wall 2 of the cabinet and defining a lower part of a plenum chamber 5.
  • the double wall 3 may merge into a downwardly open container or trough defining the top 10 of the working chamber 2.
  • an extraction fan 15 and a controllable valve schematically designated by a refer ⁇ ence numeral 16, the regulation of the fan 15 and the valve 16 being dependable upon the inlet opening 8a defined by the position of the front hatch 8.
  • a first sensor means 17 for example a potentiometer, which measures the position of the front hatch 8 in relation to the working opening 8a, and this potentiometer can thus deliver a signal A representing the degree of opening of the working hatch 8 of the vent cabinet, which signal appropriately may be supplied to a regulator 19, see Fig. 2.
  • Fig. 2 it is depicted that the regulator 19, aside from being supplied with the signal A from the transmit ⁇ ter 17, also will be supplied with a signal representing the pressure drop ⁇ p which is measured by means of a pressure drop sensor 18, and the means 17 and 18 cooper- ate with the regulator 19 in such a manner that the valve 16 and/or the fan 15 which appropriately can be mounted in an upper discharge connecting pipe 13, regulates the air velocity in the plane of the hatch 8 to suitable values, depending on the conditions prevailing during operation of the vent cabinet 1.
  • FIGs 3 and 4 there is illustrated schematically, on a larger scale, a specific embodiment of a displaceable valve element 130a according to the invention, said valve element 130a here being provided with two opposite circle sectors, each having 90° area coverage, 130aw and 130ax, respectively.
  • the thick ⁇ ness of the valve element 130a itself can be a thickness t, for example of 12 mm, and that the rounding radius R along the edges 130aa of the valve element 130a can have the same dimension as said thickness t, namely for example 12 mm.
  • valve housing 201 wherein there is mounted an embodiment of an arrange ⁇ ment in a valve, especially a regulating valve 230, as this appears from Figures 7-11, including a first displaceable valve element 230a provided for example similarly to what has been illustrated in Figures 3 and 4, as well as a corresponding stationary valve element 230b, wherein each of the elements here are provided with two circle sectors having approx. 90° area, and the Fig ⁇ ures 7 and 8 illustrating the valve with somewhat larger throughput areas 240a, 240b, and Figures 9 and 10 illus ⁇ trating the valve 230 in fully open position with throughput openings 240a, 240b corresponding to 180° throughput opening through the cylinder-shaped housing 201.
  • Fig. 6 there is also illustrated cannula pipes 141a and 141b for measuring data to an appropriate control device.
  • the stationary valve element 230b is affixed to the inner wall of the valve housing 201 and at its central inner portion carries a rotating shaft 232 which in turn carries a transmission element, for example a toothed wheel 282, which is included in a gear exchange 250 which in turn is driven by a diametrically arranged shaft 251.
  • said gear exchange 250 which via said shaft 251 is driven by for example a step motor arranged in a control housing 260, which control housing 260, see specifically Fig. 5, is provided with a wheel 270 which indicates appropriate parametres, for example the position of the rotating shaft and thereby the position of the rotating valve element and consequently the degree of opening of said valve.
  • Fig. 11 illustrates the gear exchange 250 with the here throughgoing shaft 251 , which appropriately is supported at each end, as well as provided with two cen ⁇ tral bearings 250a and 250b, between which the shaft 251 carries a first helical toothed wheel 280 and a second helical toothed wheel 281, especially helical, conical toothed wheels.
  • the two shaft driven helical toothed wheels 280 and 281 engage a third helical toothed wheel 282 arranged on the rotating valve element 230a.
  • the three toothed wheels 280, 281 and 282 may be so adapted in relation to each other that 30% overlap is provided in the next drive gear before the preceding slips. In this manner there is achieved a very high precision and very small hysteresis, which appears from test results, indicating maximum 3% deviation.
  • a differential pressure transmitter which through a hose outlet 161a and 161b, see Fig. 9, communicates with the previously discussed cannula pipes 141a 141b measuring continuously the pressure difference in ques ⁇ tion across the valve.
  • a signal corresponding to this pressure difference ⁇ p is transmitted to for example a not illustrated programmable logic control (PLS) which receives signals about opening or closing the valve de ⁇ pending on the previous position of the valve and the conditions for controlling the same.
  • PLS programmable logic control
  • the logic control or the regulator is adapted to receive signals from the previously mentioned transmitter, for example a potentiometer transmitting a signal represent ⁇ ing the opening degree of the working hatch in a vent cabinet, see otherwise Figures 1 and 2.
  • Tests have revealed that by registering the connection between volume of air, hight of hatch, air velocity in hatch, as well as total of air (air supply and extrac ⁇ tion) for a situation in which the working hatch in an air cabinet is opened to a hatch hight of approx. 0,55 m, one will after approximately only three seconds achieve a substantial air velocity via said hatch, which will oscillate to a value of approx. 0,3 m/s.
  • a hysteresis test for a valve according to the invention indicates that according to the test results involving a valve having diameter 250 mm and 240 volts alternating current motor and pressure drop 100 Pa across the valve, will result in very small hysteresis.
  • a valve according to the described type can also be used as a measuring diaphragm, the rotating shaft, respectively the motor/driving shaft being set in a specific position indicating the degree of opening of the valve, see the adjusting wheel 270 in Fig. 5, and from the differential pressure 261 one can then extract a value corresponding to air or fluid throughput for various valve openings.
  • test results indicate that an approximately linear valve is achieved by the embodiment illustrated in Figures 5-11, i.e. an air throughput which is very close ⁇ ly proportional to the opening degree and exhibits mini ⁇ mum hysteresis.
  • first and second valve elements may com ⁇ prise one or more substantially similar elements, prefer- ably circle sectors which in closed position are arranged side by side, but which in opened position are mutually overlapping, but with intermediate openings for air throughput.
  • said first and second valve elements can also comprise not only four circle sectors as this is illus ⁇ trated in the embodiment depicted in Figures 5-11, but can also comprise for example one circle sector having approx. 180° area.
  • a valve may possibly be provided with three circle sectors which are evenly dis ⁇ tributed around the centre axis, each having approx. 60° area coverage, or possibly comprise eight circle sectors having approx. 22,50° area coverage, etc.
  • valve elements With which the valve elements can be provided, will be dependent upon the field of application, it being possible for the air throughput in opposite quadrants to choose between 22,5°-45° and 90° opening, by having eight-four, respectively two, openings for air through ⁇ put.
  • the valve may appropriately be manoeuvred through step motor or gear motor which can be connected in a simple manner.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

Agencement pour vanne (230), notamment pour vanne de régulation pour la ventilation, ladite vanne (230) étant montée dans un corps de vanne (201), et comportant un ou plusieurs éléments de fermeture aptes à se déplacer entre des positions de fermeture et d'ouverture de ladite vanne. Lesdits éléments de fermeture comportent un premier élément de fermeture mobile (230a) adapté pour tourner autour d'un arbre (232) monté au centre dudit corps de vanne (201), ainsi qu'un second élément de fermeture immobile (230b) ayant sensiblement la même forme et la même superficie que le premier élément mobile (230a). Afin d'obtenir une vanne qui présente une hystérésis minimale, qui assure une régulation rapide et précise du débit de fuide, et qui assure également un passage silencieux de l'air, il est prévu de fixer un élément de fermeture immobile (230b) dans la paroi interne du corps de vanne (201), sa partie centrale intérieure portant l'arbre rotatif (232) des éléments de fermeture mobiles (230a), et de monter un élément de transmission rotatif sur cet arbre (230), par exemple une roue dentée (282) d'entraînement d'un élément de fermeture mobile (230a).
PCT/NO1996/000002 1995-01-20 1996-01-09 Agencement pour vanne comportant un premier element de fermeture mobile et un second element mobile WO1996023178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45911/96A AU4591196A (en) 1995-01-20 1996-01-09 Arrangement in a valve comprising a first displaceable valve element and a second stationary element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO950219 1995-01-20
NO950219A NO180129C (no) 1994-11-10 1995-01-20 Anordning ved et spjeld

Publications (1)

Publication Number Publication Date
WO1996023178A1 true WO1996023178A1 (fr) 1996-08-01

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ID=19897849

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PCT/NO1996/000002 WO1996023178A1 (fr) 1995-01-20 1996-01-09 Agencement pour vanne comportant un premier element de fermeture mobile et un second element mobile

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AU (1) AU4591196A (fr)
WO (1) WO1996023178A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1454085A4 (fr) * 2001-11-13 2006-06-07 Emech Control Ltd Formerly Tec Electrovanne de processus
WO2010042137A1 (fr) 2008-10-10 2010-04-15 Metropolitan Air Technology Engrenage motorisé et système de couplage
EP3825621A1 (fr) * 2019-11-25 2021-05-26 Silverline Endüstri ve Ticaret A.S. Diffuseur sensible pour systèmes de ventilation centrales
CN114667419A (zh) * 2019-11-07 2022-06-24 瑞典意昂公司 用于对控制传热流体到热能提取单元中的流动的控制阀进行控制的方法和控制单元

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986252A (en) * 1930-12-13 1935-01-01 William F Conran Regulator device
US3003408A (en) * 1959-07-06 1961-10-10 Gen Electric Damper operating arrangement
US3110323A (en) * 1962-04-16 1963-11-12 Helguera Carlos Drain strainer
SE417480B (sv) * 1978-03-21 1981-03-23 Tranas Rostfria Ab Anordning vid ett dragskap
US4328831A (en) * 1973-11-01 1982-05-11 Wolff Robert C Rotary valve
US4554943A (en) * 1983-12-02 1985-11-26 Fisher Controls International, Inc. Single disc rotary valve
NO156841B (no) * 1985-08-27 1987-08-24 Per Bj Simble Mellomkoplingsstykke for tilkopling av ventilasjonskanal til kanal i betongelement.
NO159121B (no) * 1984-11-05 1988-08-22 Trox Gmbh Geb Anordning for trykkmaaling i et klimaanlegg.
US4934256A (en) * 1989-02-14 1990-06-19 Labconco Corporation Fume hood ventilation control system
NO166462B (no) * 1987-06-18 1991-04-15 Halton Oy Fremgangsmaate og anordning for aa styre volumetrisk stroemningshastighet i klimaanlegginstallasjoner.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986252A (en) * 1930-12-13 1935-01-01 William F Conran Regulator device
US3003408A (en) * 1959-07-06 1961-10-10 Gen Electric Damper operating arrangement
US3110323A (en) * 1962-04-16 1963-11-12 Helguera Carlos Drain strainer
US4328831A (en) * 1973-11-01 1982-05-11 Wolff Robert C Rotary valve
SE417480B (sv) * 1978-03-21 1981-03-23 Tranas Rostfria Ab Anordning vid ett dragskap
US4554943A (en) * 1983-12-02 1985-11-26 Fisher Controls International, Inc. Single disc rotary valve
NO159121B (no) * 1984-11-05 1988-08-22 Trox Gmbh Geb Anordning for trykkmaaling i et klimaanlegg.
NO156841B (no) * 1985-08-27 1987-08-24 Per Bj Simble Mellomkoplingsstykke for tilkopling av ventilasjonskanal til kanal i betongelement.
NO166462B (no) * 1987-06-18 1991-04-15 Halton Oy Fremgangsmaate og anordning for aa styre volumetrisk stroemningshastighet i klimaanlegginstallasjoner.
US4934256A (en) * 1989-02-14 1990-06-19 Labconco Corporation Fume hood ventilation control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1454085A4 (fr) * 2001-11-13 2006-06-07 Emech Control Ltd Formerly Tec Electrovanne de processus
WO2010042137A1 (fr) 2008-10-10 2010-04-15 Metropolitan Air Technology Engrenage motorisé et système de couplage
EP2347189A4 (fr) * 2008-10-10 2014-03-05 Metropolitan Air Technology Engrenage motorisé et système de couplage
CN114667419A (zh) * 2019-11-07 2022-06-24 瑞典意昂公司 用于对控制传热流体到热能提取单元中的流动的控制阀进行控制的方法和控制单元
CN114667419B (zh) * 2019-11-07 2023-07-18 瑞典意昂公司 用于对控制传热流体到热能提取单元中的流动的控制阀进行控制的方法和控制单元
US12281802B2 (en) 2019-11-07 2025-04-22 E.On Sverige Ab Method and control unit for controlling a control valve controlling a flow of heat transfer fluid into a thermal energy extraction unit
EP3825621A1 (fr) * 2019-11-25 2021-05-26 Silverline Endüstri ve Ticaret A.S. Diffuseur sensible pour systèmes de ventilation centrales

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Publication number Publication date
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