+

WO1999037944A1 - Regulateur du debit lineaire d'un fluide - Google Patents

Regulateur du debit lineaire d'un fluide Download PDF

Info

Publication number
WO1999037944A1
WO1999037944A1 PCT/NO1999/000019 NO9900019W WO9937944A1 WO 1999037944 A1 WO1999037944 A1 WO 1999037944A1 NO 9900019 W NO9900019 W NO 9900019W WO 9937944 A1 WO9937944 A1 WO 9937944A1
Authority
WO
WIPO (PCT)
Prior art keywords
damper
adjustment
plate
apertures
profile plate
Prior art date
Application number
PCT/NO1999/000019
Other languages
English (en)
Inventor
Ove Ingebretsen
Original Assignee
Ove Ingebretsen
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 Ove Ingebretsen filed Critical Ove Ingebretsen
Priority to AU21909/99A priority Critical patent/AU2190999A/en
Publication of WO1999037944A1 publication Critical patent/WO1999037944A1/fr

Links

Classifications

    • 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
    • F24F13/16—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of parallelly-movable plates
    • 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
    • F16K3/30—Details
    • F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

Definitions

  • the present invention concerns a damper for linear adjustment of a fluid flow such as an air flow, a liquid flow or the like.
  • a damper for linear adjustment of a fluid flow is essentially designed in such a manner that the fluid through-flow is linear and approximately directly proportional to the damper's degree of opening.
  • the object of such a damper with linear adjustment characteristics is, amongst other things, to facilitate the use of standard adjustment strategy and adjustment technology in order to adjust the fluid through-flow in a fluid pipe.
  • a standard damper or valve which is used to adjust the through-flow in a fluid pipe will have an opening and closing characteristic in the form of the amount of medium which has flowed through as a function of the damper's or the valve's degree of opening.
  • damper or the valve is designed in such a manner that a linear characteristic is obtained in the relationship between fluid volume passed and degree of opening, it will be easier to use the damper in a standard adjustment system where traditional elements with regard to sensors, adjustment and programming can be employed. This in turn contributes to substantially lower costs when employing a linear damper/valve in an adjusted system, while at the same time the possibility will exist for obtaining a more accurate adjustment of the fluid flow.
  • a damper or a valve with linear characteristics will be able to provide lower costs for installation of the adjustment system by means of standardised adjustment elements, lower costs in connection with start-up and subsequent operation of the adjustment system, more reliable control with regard to variable air volume together with more reliable control with regard to pressure changes, resulting in a lower energy consumption by means of a further optimal control of the ventilation system.
  • the damper should be designed so as to provide good flow-related conditions, low pressure resistance, and possibly a low noise level and simple design for altering the damper's characteristics.
  • the damper consists essentially of a profile plate and one or more adjustment plates, which profile plate and adjustment plate are movable relative to each other and which plates are provided with one or more apertures.
  • the plates are preferably mounted close to each other in order to avoid eddying and flow disturbances.
  • the apertures in the profile plate have a design which is adapted to operative conditions and which provide linear conditions between the aperture and through-flow volume.
  • the apertures in the profile plate are designed on the basis of a triangle with a bottom line and two vertical sides.
  • the bottom line remains unchanged and represents the full opening in the damper and the vertical sides and the top are adapted so as to permit the damper to provide an optimally adapted linear adjustment characteristic.
  • the adaptation in this design has to satisfy in particular the requirements for a linear relationship in the lower part of the characteristic, i.e. where there is little through-flow and a small opening.
  • the profile plate is provided with one or more apertures and the adjustment plate is provided with one or more apertures adapted in size in shape, with the result that the adjustment plate's aperture forms an area corresponding to or larger than the total area of the aperture in the profile plate.
  • the size and shape of the aperture in the adjustment plate may be adapted so that the aperture in the adjustment plate co-operates with the aperture in the profile plate, thus together providing the best possible linear adjustment of the fluid flow.
  • the profile plate and the adjustment plate are placed substantially across the channel and may be at an angle relative to the vertical plane in the channel's longitudinal direction. By altering the angle the damper can be adapted to the various operating conditions and achieve the desire pressure resistance and flow- related environment.
  • the two plates may further be installed at an angle of up to 90° relative to the vertical plane, i.e. in an approximately horizontal relationship to the channel's longitudinal direction where the plates can be moved relative to each other in the channel's longitudinal direction.
  • an angle of up to 90° relative to the vertical plane i.e. in an approximately horizontal relationship to the channel's longitudinal direction where the plates can be moved relative to each other in the channel's longitudinal direction.
  • a second approach to the problem of linear adjustment of a fluid flow has been attempted by adapting the actual adjustment body in the air flow, such as a valve or a damper.
  • the actual adjustment body in the air flow such as a valve or a damper.
  • an adaptation of the flow aperture in, for example, a damper This may, e.g., be an adaptation of the shape of the element which closes off the fluid flow aperture in the damper.
  • the plates are indicated placed in channels where the plates are curved or divided into different angular plate segments.
  • the solution consisting of an aperture in each plate is indicated placed across a channel.
  • This provides a high degree of pressure resistance and unfavourable flow-related conditions which in turn affect the linearity in the damper's adjustment characteristics.
  • a further related solution is described in US patent 3,223,019 where two mutually movable plates are employed.
  • the fluid flow is directed outwards from a channel and thus it does not matter how the damper is placed relative to the channel.
  • the apertures in the plates are not necessarily similar in shape.
  • the solution has little in common with the present invention since no account is taken of the flow-related conditions inside a channel on each side of the damper while at the same time it seems as if the linearity in the adjustment is only slight and a minor consideration.
  • figure 1 is a section viewed from the side of an embodiment of the present invention where the profile plate and the adjustment plate are placed horizontally in the channel's longitudinal direction and are provided with an aperture.
  • Figure 2 is a section viewed from above of the embodiment in figure 1.
  • Figure 3 is a section viewed from the side of an embodiment of the present invention where the profile plate and the adjustment plate are placed horizontally in the channel's longitudinal direction and are provided with a plurality of apertures in longitudinal direction and breadth.
  • Figure 4 is a section viewed from above of the embodiment in figure 3.
  • Figure 5 is a section viewed from the side of an embodiment of the present invention where the profile plate and the adjustment plate are placed horizontally in the channel's longitudinal direction and are provided with a plurality of apertures in the longitudinal direction.
  • Figure 6 is a section viewed from above of the embodiment in figure 5.
  • Figure 7 is a section viewed from the side of an embodiment of the present invention where the profile plate and the adjustment plate are placed in the channel's longitudinal direction at an angle of less than 90° relative to the vertical plane.
  • Figure 8 is a section viewed from above of the embodiment in figure 7.
  • Figure 9 is a translucent isometric view of the embodiment according to figures 7 and 8.
  • Figure 10 illustrates a design of the aperture(s) in the profile plate which is adapted to linear adjustment characteristics.
  • Figure 11 illustrates a further design of the aperture(s) in the profile plate which is adapted to linear adjustment characteristics.
  • FIGS 1 and 2 there is illustrated an embodiment of the present invention where the profile plate 4 and the adjustment plate 3 are placed in a mutually movable relationship horizontally in the channel profile's 1 longitudinal direction.
  • the profile plate 4 is connected to the channel's 1 internal surface via a front supporting wall 6 and a rear supporting wall 7.
  • the adjustment plate 3 is movable in the channel's 1 longitudinal direction relative to the profile plate 4.
  • the profile plate 4 is provided with one triangular aperture with its front apex pointing in the direction of flow 9 for the fluid in the channel 1.
  • the adjustment plate 3 is provided with an aperture corresponding to the aperture in the profile plate 4.
  • the area of the aperture in the adjustment plate 3 is the same size as or larger than the area of the aperture in the profile plate 4.
  • the adjustment plate 3 In one of its extreme positions the adjustment plate 3 is fully retracted, completely blocking the aperture in the profile plate 4.
  • the adjustment plate 3 can then be moved relative to the profile plate 4 with the result that the apertures in the two plates 3, 4 form a triangular through- going aperture in the damper.
  • the fluid in the channel 1 then passes under the front supporting wall 6 and up through the aperture which is formed in the horizontally mounted plates 3, 4 in the longitudinal direction of the channel 1.
  • the adjustment plate 3 is moved in the channel's 1 longitudinal direction along the rails 5 of a drive device 10 via a transmission 1 1.
  • the transmission 1 1 is rotatably mounted on an attachment point 12 on the adjustment plate 3.
  • the drive device 10 is shown mounted on the outside of the channel 1 but can be installed in several different positions, externally or internally in the channel profile 1.
  • Various types of drive devices may also be employed here, such as rotating drive devices and linear drive devices. These may be electrically driven such as a DC motor, a stepper motor or the like, or the drive device 10 may be, for example, hydraulically or pneumatically driven.
  • a pneumatic or hydraulic linear drive device may be employed on the inside or the outside of the channel for moving the adjustment plate 3.
  • the embodiment in figure 1 provides an approximately linear adjustment of passing fluid volume relative to the movement of the adjustment plate 1.
  • the linearity is substantially determined by the shape of the aperture in the profile plate 4 which in the present invention is based on a triangle but which can be further adapted in order to achieve an approximately linear opening/closing characteristic.
  • FIGS 3 and 4 there is further illustrated an embodiment as a section from the side and a section from above respectively similar to that illustrated in figures 1 and 2.
  • the profile plate 4 and the adjustment plate 3 are mounted horizontally in the channel's 1 longitudinal direction.
  • the two plates 3, 4 are movably positioned relative to each other, and at each end in the longitudinal direction the profile plate 4 is connected with the channel's 1 internal surface by a front supporting wall 6 and a rear supporting wall 7.
  • the walls 6, 7 like corresponding walls 6, 7 in figure 1, are mounted vertically relative to the channel 1. Taking into account both flow- related conditions and the lowest possible pressure resistance it will be possible to place the walls 6, 7 at an angle relative to the vertical plane.
  • the profile plate is illustrated with several triangular apertures.
  • the breadth of the profile plate 4 there are mounted two triangular apertures placed beside each other.
  • the apertures in the adjustment plate 3 are rectangular with a larger area in the breadth of the plate. In the same way as the embodiment in figures 1 and 2, in one of its end positions the adjustment plate 3 will completely cover the apertures in the profile plate 4 and there is no through-flow through the damper.
  • the plate 3 By means of a drive device 10 and transmission 11 to a point 12 on the adjustment plate 3 the plate 3 can be moved in the longitudinal direction of the channel 1 and thereby in the longitudinal direction of the profile plate 4 along rails 5.
  • the apertures 8 in the adjustment plate 3 will uncover the apertures in the profile plate 4, thus permitting a through-flow in the damper in the direction of flow 9 as indicated in the figure.
  • the profile plate 4 is provided with four "pairs" of triangular apertures while the adjustment plate 3 is provided with three rectangular apertures.
  • the adjustment plate 3 In its front end position the adjustment plate 3 covers the four "pairs" of triangular apertures and during subsequent movement the front edge of the adjustment plate 3 will uncover the front "pair” of triangular apertures in the profile plate 4.
  • the fluid flows in under the front supporting wall 6 and up through the apertures which are formed in the section between the apertures in the two plates 3 and 4.
  • the flow volume through the damper will be approximately linear with the movement of the adjustment plate 3.
  • the linearity is substantially determined by the shape of the apertures in the profile plate 4.
  • FIGS 5 and 6 as in figures 1 to 4, it is shown how the profile plate 4 and the adjustment plate 3 are mounted horizontally in the channel's 1 longitudinal direction.
  • the two plates 3, 4 are movably mounted relative to each other and at each end in the longitudinal direction the profile plate 4 is connected with the channel's 1 internal surface by a front supporting wall 6 and a rear supporting wall 7.
  • the walls 6, 7 are installed vertically relative to the channel 1.
  • the profile plate 4 is illustrated with a plurality of triangular apertures placed after one another in the longitudinal direction of the plate 4 and the channel 1.
  • the adjustment plate 3 is provided in the longitudinal direction with three apertures whose area is larger than the apertures in the profile plate 4.
  • the apertures in the adjustment plate 3 are rectangular with a larger area in the breadth of the plate.
  • the adjustment plate 3 in its end position the adjustment plate 3 will completely cover the apertures in the profile plate 4 and there is no through-flow through the damper.
  • the plate 3 can be moved in the longitudinal direction of the channel and thereby the profile plate 4 along rails 5.
  • the apertures 8 in the adjustment plate 3 will uncover the apertures in the profile plate 4, thus permitting a through-flow in the damper in the direction of flow 9 as indicated in the figure.
  • the profile plate 4 is provided with four triangular apertures while the adjustment plate 3 is provided with three rectangular apertures.
  • the adjustment plate 3 In its front end position the adjustment plate 3 covers the four triangular apertures and during subsequent movement the front edge of the adjustment plate 3 will uncover the front triangular aperture in the profile plate 4.
  • the fluid flows in under the front supporting wall 6 and up through the apertures which are formed in the section between the apertures in the two plates 3 and 4.
  • the flow volume through the damper will be approximately linear with the movement of the adjustment plate 3.
  • the linearity is substantially determined by the shape of the apertures in the profile plate 4.
  • figure 7 and 8 there is illustrated a further embodiment, as a section viewed from the side and a view from above respectively, which in many cases will be better adapted to flow-related conditions and which provides 10
  • the profile plate 4 and the adjustment plate 3 are illustrated disposed at an angle ⁇ less than 90° relative to the vertical plane.
  • the plates 3 and 4 are still mounted substantially in the channel's 1 longitudinal direction and according to the invention the triangular apertures in the profile plate 4 are disposed with a corner in the direction of flow.
  • the adjustment plate 3 moves along the profile plate 4 in the channel's 1 longitudinal direction.
  • the adjustment plate 3 is driven by a drive device 10 via transmission 1 1 to a point 12 on the adjustment plate 3.
  • three triangular apertures are provided in the breadth of the profile plate 4 and in figure 8 there is illustrated an adjustment plate 3 in which the apertures have the same shape and size as the apertures in the profile plate 4.
  • FIG 9 there is an isometric illustration of an embodiment in accordance with figures 7 and 8.
  • the plates 3 and 4 are mounted in the channel's longitudinal direction at an angle ⁇ relative to the vertical plane.
  • the angle ⁇ may be up to 90 degrees where the plates 3 and 4 are horizontal.
  • triangular apertures are employed in the profile plate 4 in order to obtain linear adjustment of fluid through-flow relative to the damper's opening. There are, however, a number of factors which have to be considered in order to obtain good linearity in all parts of the adjustment area. Some of the special problems which may be mentioned here are satisfactory filling at the beginning of the opening and further linear follow-up right up to the end. In order to achieve the best possible linear conditions it has been shown that a triangular aperture with lateral edges 21 which curve concavely inwards in the aperture may be advantageous. This provides an approximately triangular shape with curved lateral edges 21 , which is partly illustrated in the above- mentioned publication US 5,218,998, figure 6.
  • the upper curve 20 provides sufficient through- flow in the early phase of the linear adjustment, while the concave lateral surfaces 21 give a linear central part.
  • the end of the adjustment is effected by the transition between the sides 21 and the bottom 22.
  • the corners 23 can also be rounded here but for the sake of linearity the bottom line 22 ought to constitute the greatest breadth in the triangle since this is the maximum opening corresponding to maximum movement of the damper's adjustment plate 3.
  • FIG 1 1 a further embodiment is illustrated of the aperture in a profile plate 4.
  • the front part of the opening profile 31 which is not opened until the profile plate 4 and the adjustment plate 3 are moved relative to each other, has a rounded shape which may be flattened in relation to a rounding of a corner in a triangle while at the same time the latter may be more pointed than a semi-circular arc with a large diameter.
  • the front part 31 of the aperture and the rear part 33 there are convexly outwardly curved lateral edges 32 which are terminated at the rear edge 33 of the aperture.
  • the profile plate 4 and the adjustment plate 3 are movable relative to each other.
  • This does not necessarily mean that one of the plates 3, 4 is fixed in the channel profile 1 and the other movably mounted, but can also mean that both plates 3, 4 move relative to each other by means of simultaneous movement of both plates 3, 4. If one of the plates 3, 4 is fixed this may be both the profile plate 4 and the adjustment plate 3.
  • the aperture in, e.g. the adjustment plate 3 is of such a size and shape that it can be employed with a plurality of profile plates 4. By replacing the profile plate 4 it will thereby be possible to adapt the damper to altered operating conditions. 12
  • adjustment plates 3 which are divided and which are moved relative to the profile plate 4 in successive order or another suitable manner. This will enable a segmented linear adjustment to be achieved. If the linearity is good the successive adjustment will provide a greater range of adjustment with finer resolution.
  • the positioning of the profile plate 4 and the adjustment plate 3 as indicated in figures 7, 8 and 9 is combined with apertures in the profile plate 4 as illustrated in either figure 10 or 11. This can be selected on the basis of the existing operative conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Flow Control Members (AREA)

Abstract

L'invention concerne un régulateur du débit linéaire d'un fluide, tel que de l'air ou un liquide en circulation. Ce régulateur est conçu de façon que l'écoulement du fluide est linéaire et pratiquement directement proportionnel à la position d'ouverture du régulateur. Ce régulateur présentant des caractéristiques de régulation linéaire sert, entre autres, à faciliter la mise en application d'une stratégie de régulation et d'une technologie de réglage normalisées permettant de réguler le débit d'un fluide dans une canalisation. Ce régulateur est constitué par une plaque profilée (4) et par une ou plusieurs plaques de régulation (3), ladite plaque profilée (4) et ladite plaque de régulation (3) étant mobiles l'une par rapport à l'autre et lesdites plaques (3, 4) étant pourvues d'une ou de plusieurs ouvertures. Ces plaques (3, 4) sont, de préférence, placées à proximité étroite l'une de l'autre, de manière à éviter les turbulences et les perturbations de l'écoulement. D'après l'invention, les ouvertures de la plaque profilée (4) sont créées selon la forme d'un triangle présentant une ligne de base et deux côtés verticaux. La ligne de base reste exempte de modifications et représente l'ouverture totale du régulateur et les côtés verticaux, ainsi que le sommet, sont conçus pour que le régulateur possède une caractéristique optimisée de régulation linéaire.
PCT/NO1999/000019 1998-01-26 1999-01-26 Regulateur du debit lineaire d'un fluide WO1999037944A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21909/99A AU2190999A (en) 1998-01-26 1999-01-26 Linear fluid damper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19980321 1998-01-26
NO980321A NO980321D0 (no) 1998-01-26 1998-01-26 Lineært luftespjeld-/ventil. Bruksområde: Behovsstyrt ventialsjon med mere

Publications (1)

Publication Number Publication Date
WO1999037944A1 true WO1999037944A1 (fr) 1999-07-29

Family

ID=19901585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1999/000019 WO1999037944A1 (fr) 1998-01-26 1999-01-26 Regulateur du debit lineaire d'un fluide

Country Status (3)

Country Link
AU (1) AU2190999A (fr)
NO (1) NO980321D0 (fr)
WO (1) WO1999037944A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036849A1 (fr) * 1999-11-17 2001-05-25 Ove Ingebretsen Element regulateur
GB2472338B (en) * 2008-05-27 2012-09-19 Weir Minerals Europ Ltd Pump system
CN103124888A (zh) * 2010-09-10 2013-05-29 丰斯公司 用于处理颗粒材料床的方法和设备
WO2017029493A1 (fr) * 2015-08-17 2017-02-23 Frontgrid Limited Appareil de simulation d'une expérience en parachute
RU2651393C2 (ru) * 2016-09-12 2018-04-19 Вадим Сергеевич Рыжов Устройство управления тепловой мощностью твёрдотопливного отопительного прибора
EP3406986A1 (fr) * 2017-05-22 2018-11-28 TROX HESCO Schweiz AG Régulateur de flux, caissons de ventilation avec régulateur de flux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH314254A (de) * 1955-03-31 1956-06-15 Direktion Der Eidg Bauten Abzweigkasten in einem Kanal, in dem ein gasförmiges Medium strömt
US3223019A (en) * 1963-08-19 1965-12-14 Kaiser Gypsum Company Inc Lineal air diffuser
DE1208864B (de) * 1962-05-08 1966-01-13 Hagenuk Neufeldt Kuhnke Gmbh Einlassschieberanordnung an Luftheizungs- und/oder Klimaanlagen zum Beheizen oder Klimatisieren von Raeumen, vorzugsweise von Abteilen in Eisenbahnwagen, nach dem Zweikanalsystem
NO166462B (no) * 1987-06-18 1991-04-15 Halton Oy Fremgangsmaate og anordning for aa styre volumetrisk stroemningshastighet i klimaanlegginstallasjoner.
US5218998A (en) * 1992-04-01 1993-06-15 Bakken Gary M Linearly adjustable
US5427146A (en) * 1994-06-27 1995-06-27 Bakken; Gary M. Linearly adjustable fluid damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH314254A (de) * 1955-03-31 1956-06-15 Direktion Der Eidg Bauten Abzweigkasten in einem Kanal, in dem ein gasförmiges Medium strömt
DE1208864B (de) * 1962-05-08 1966-01-13 Hagenuk Neufeldt Kuhnke Gmbh Einlassschieberanordnung an Luftheizungs- und/oder Klimaanlagen zum Beheizen oder Klimatisieren von Raeumen, vorzugsweise von Abteilen in Eisenbahnwagen, nach dem Zweikanalsystem
US3223019A (en) * 1963-08-19 1965-12-14 Kaiser Gypsum Company Inc Lineal air diffuser
NO166462B (no) * 1987-06-18 1991-04-15 Halton Oy Fremgangsmaate og anordning for aa styre volumetrisk stroemningshastighet i klimaanlegginstallasjoner.
US5218998A (en) * 1992-04-01 1993-06-15 Bakken Gary M Linearly adjustable
US5427146A (en) * 1994-06-27 1995-06-27 Bakken; Gary M. Linearly adjustable fluid damper

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036849A1 (fr) * 1999-11-17 2001-05-25 Ove Ingebretsen Element regulateur
GB2472338B (en) * 2008-05-27 2012-09-19 Weir Minerals Europ Ltd Pump system
CN103124888A (zh) * 2010-09-10 2013-05-29 丰斯公司 用于处理颗粒材料床的方法和设备
CN103124888B (zh) * 2010-09-10 2015-06-10 丰斯公司 用于处理颗粒材料床的方法和设备
WO2017029493A1 (fr) * 2015-08-17 2017-02-23 Frontgrid Limited Appareil de simulation d'une expérience en parachute
RU2651393C2 (ru) * 2016-09-12 2018-04-19 Вадим Сергеевич Рыжов Устройство управления тепловой мощностью твёрдотопливного отопительного прибора
EP3406986A1 (fr) * 2017-05-22 2018-11-28 TROX HESCO Schweiz AG Régulateur de flux, caissons de ventilation avec régulateur de flux

Also Published As

Publication number Publication date
AU2190999A (en) 1999-08-09
NO980321D0 (no) 1998-01-26

Similar Documents

Publication Publication Date Title
US7967669B2 (en) Variable air volume control apparatus
CA2004318C (fr) Methode de modification de la courbe caracteristique d'une soupape regulatrice sous pression, et soupape regulatrice
EP0188130A1 (fr) Vanne
CA2005455A1 (fr) Dispositif pour transformer un ecoulement laminaire en egouttement
WO1999037944A1 (fr) Regulateur du debit lineaire d'un fluide
US4151859A (en) Throttle shaft for the controlled discharge of dammed-up water
KR100618594B1 (ko) 부표식 자동 차단밸브
CN1975220B (zh) 新型蝶形阀芯及其蝶阀
US4877059A (en) Valve
CN102032376B (zh) 动态平衡调节阀
KR100525160B1 (ko) 부표식 자동 차단밸브
GB2141561A (en) Vortex valves
CN213017830U (zh) 一种电磁气动切换球阀
EP0489296A1 (fr) Vanne sphérique avec mécanisme de régulation du débit
CN113090764B (zh) 一种热水管道用动阻器结构
CN209622069U (zh) 冷空气调节阀
CN209470328U (zh) 一种转动式风阀及其新风设备
CN101000104A (zh) 可使通过流量与阀芯转角成近似直线线性关系的新型蝶形阀芯及其蝶阀
CN209943542U (zh) 一种可调式自动节流阀
CN208793782U (zh) 一种具有自动调节水流的空调控制阀
CN111828681A (zh) 一种供暖系统温度自动调节阀
CN116985857B (zh) 一种铁路车辆及其通风装置
DE19508319A1 (de) Einrichtung zur Einstellung von Fluidströmen
EP1238218B1 (fr) Element regulateur
CN109058509A (zh) 一种智慧比例阀

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载