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WO2024074242A1 - Régulateur de débit volumétrique, en particulier pour systèmes de climatisation et de ventilation - Google Patents

Régulateur de débit volumétrique, en particulier pour systèmes de climatisation et de ventilation Download PDF

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Publication number
WO2024074242A1
WO2024074242A1 PCT/EP2023/072653 EP2023072653W WO2024074242A1 WO 2024074242 A1 WO2024074242 A1 WO 2024074242A1 EP 2023072653 W EP2023072653 W EP 2023072653W WO 2024074242 A1 WO2024074242 A1 WO 2024074242A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow
channel
medium
opening
web
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.)
Ceased
Application number
PCT/EP2023/072653
Other languages
German (de)
English (en)
Inventor
Marlena BAUER
Christoph Becker
Jürgen SASSMANSHAUSEN
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.)
Siegenia Aubi KG
Original Assignee
Siegenia Aubi 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 Siegenia Aubi KG filed Critical Siegenia Aubi KG
Publication of WO2024074242A1 publication Critical patent/WO2024074242A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • 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
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • G05D7/0173—Control of flow without auxiliary power using pivoting sensing element acting as a valve mounted within the flow-path

Definitions

  • Volume flow controllers especially for air conditioning and ventilation systems
  • the present invention relates to a volume flow controller, in particular for air conditioning and ventilation systems, according to the preamble of claim 1.
  • volume flow controllers are known from practice.
  • the control flap is pivoted against a restoring force from an open position to a closed position under the influence of the medium flowing towards the control flap and pivoted back to the open position by the restoring force when the volume flow of the flowing medium decreases.
  • Such volume flow controllers work mechanically automatically because the flow-related control flap torque is compensated by the restoring force, which is usually generated by a spring.
  • the pivoting position of the control flap also changes, so that the volume flow is automatically regulated in the flow channel.
  • volume flow controllers with actuators are also known.
  • a disadvantage of known volume flow controllers is that only a small throttling can be achieved at small flap closing angles of about 15°, but the throttling effect increases sharply with increasing flap closing angles.
  • EP 2 154 439 B1 discloses a volume flow controller with a control and/or throttle valve mounted pivotably on a shaft arranged transversely to the flow direction inside a channel wall.
  • the volume flow controller has at least one flow barrier that reduces the flow cross-section by a partial area.
  • the shaft is arranged in the area of the reduced flow cross-section, and the volume flow controller has a measuring device for detecting differential pressures of the medium flowing in the flow channel with at least two extraction openings arranged one behind the other at a distance in the flow direction.
  • a reducing flow barrier is arranged between the extraction openings in the flow cross-section by a partial area.
  • a device for determining the size of a Volume flow of a fluid has a channel with a channel wall, a first pressure tapping point with one or more first pressure tapping openings, a second pressure tapping point with one or more second pressure tapping openings and a throttle valve arranged within the channel wall for changing the cross-sectional area of the channel through which the fluid can flow.
  • the throttle valve is pivotally mounted at a first section and has a second section that can be fixed immovably in relation to the channel wall.
  • the first section is mounted on a shaft so as to be rotatable about an axis of rotation, the shaft lying in a plane that is essentially perpendicular to the flow direction of the fluid.
  • a second section lies outside the plane.
  • the invention is therefore based on the object of creating a solution with little installation space and components to ensure a high flow rate of a medium at low pressure with a generic volume flow regulator, the throttling effect of which increases with a uniformly increasing flap closing angle and allows a constant volume flow from a defined pressure and thus eliminates all of the disadvantages described above.
  • the arrangement means that the volume flow controller according to the invention creates a vortex when the volume flow of a medium passes through a flow barrier or aperture on the back, which further aerodynamically reduces the passage opening. As the pressure increases, the flow opening becomes smaller and smaller due to the vortex. The volume of the medium flowing through thus remains constant even with changing pressures.
  • the flow barrier or aperture is thus self-regulating from a certain pressure, without additional mechanical components.
  • the volume flow controller thus has the advantage of a small installation space with few components. With minimal installation space, as few components as possible and therefore cost-effective, the volume flow controller according to the invention ensures that the air volume flow is limited in any cross-section depending on the pressure in the air duct.
  • the advantageous design enables optimization for pressures of less than 40-100 Pascal.
  • the volume flow controller has a channel for guiding the flow direction of a medium with a volume flow, with a circumferentially fixed web being formed on a channel wall inside the channel.
  • a flow barrier is mounted on the web transversely to the flow direction of the medium, which is designed as a diaphragm and rests against the web. It is particularly advantageous that the flow barrier forms at least two openings, of which the first opening is a arranged cutout which reduces the flow cross-section of the channel by a portion so that the medium flows continuously through the first opening.
  • the second opening has a movable element for automatic opening and closing, through which the medium also flows variably.
  • the second opening opens and closes depending on the pressure of the medium.
  • the movable element When the pressure of the medium is low, the movable element is open. As the pressure increases, the movable element moves and continuously reduces the opening until it is completely closed so that the medium can only flow through the first opening.
  • the movable element can assume a basic position that releases the ventilation path of the medium through the channel, and position further positions that occupy the ventilation path. All positions of the movable element are set depending on the pressure of the medium flowing through.
  • the surrounding body of the volume flow regulator, which forms the housing, is formed by the channel, which forms a sealed, enclosed space in which the flow barrier is arranged.
  • the channel is preferably circular in shape, so that the flow barrier adapts to it circumferentially. Other shapes, such as a rectangle, square or polygon, are also conceivable.
  • a first design variant of the flow barrier or aperture forms a second cutout in the flow chamber forming the channel for the medium, fixed to the web.
  • the cutout is then superimposed by a throttle valve in a closed position, closing it, or the cutout is in an open position that can be continuously adjusted for the throttle valve to allow the medium to flow through, so that the medium can flow through the first cutout and, depending on the pressure of the medium, also through the second cutout.
  • the throttle valve is mounted so that it can pivot about an axis and forms the movable element which, in the pivoted open position, releases the air flow in this design at a distance from the cutout, the second opening and automatically regulates the air flow of the medium.
  • the movable element is designed to be pivotable about an axis arranged transversely to the longitudinal direction of the duct, which in the pivotally open position at a distance from the web releases the second opening and automatically regulates the air flows.
  • the axis of the tiltable throttle valve and the tiltable flow barrier itself transversely to the longitudinal direction in the leading channel within the channel wall.
  • the throttle valve and the flow barrier preferably have tilting joints on the outside.
  • the tilting joints of the first design variant of the flow barrier for the throttle valve have holes which are mounted in a leading and tiltable manner with support pins attached to the flow barrier.
  • the tilting joints of the second design variant of the flow barrier consist of round bearing pins arranged on the flow barrier, which are freely tilted in suspensions on the web. The tilting joints form the tilting axis of the movable elements and can vary in the described design variants.
  • the movable elements can be moved freely between an open basic position and a closed position.
  • Weights on the movable elements enable the movable elements to assume the open basic position by gravity when the pressure of the medium is low, in a cost-effective and simple manner. It is useful and particularly advantageous that the weights in the first design variant are of different weights.
  • the throttle valves open and close at different times due to the different weighting of the weights depending on the pressure on the volume flow regulator, so that after passing through the flow barrier, the pressure of the flowing medium is evenly distributed through the channel.
  • spring elements with the movable elements can also be used for automatic adjustment to the open basic position.
  • the spring elements can be manufactured with the movable elements as a one-piece construction, or can be designed as separate components.
  • the first section with the flow barrier remains immobile and constant in its position relative to the channel, whereas in the second embodiment, the first section together with the flow barrier pivots around the tiltable axis of the flow barrier depending on the flow ratio of the medium and changes its position relative to the channel accordingly.
  • the cross-section of the second opening changes depending on the pressure of the flowing medium. If the pressure of the medium increases, the throttle valve approaches the flow barrier until the throttle valve finally comes into contact and closes the second opening.
  • the flow barrier approaches the channel with increasing pressure. arranged web until finally a position of the flow barrier adjacent to the web additionally provided webs is reached and closes the second opening.
  • the flow barrier is preferably made of the same material as the channel of the volume flow controller. Alternatively, other materials can be used to manufacture the flow barrier or the channel. A preferred material for the flow barrier and the channel is a plastic material.
  • the web is designed as a ring and is easy to manufacture and inexpensive and is offset inwards in the channel towards the channel wall.
  • a cross-section that is reduced compared to the channel wall with an inner wall of the web forms opposite side surfaces to which the flow barrier is attached for an end position.
  • An advantageous design for easy assembly of the first and second design variants of the flow barrier is that a flange runs through the inner cross section of the web until it reaches a resting position.
  • the flange of the first design variant also has a collar which, when it runs through the web, forms a force-fitting or form-fitting connection with one of the side surfaces of the web.
  • the flange arranged between the flow barrier and the web offers the flow barrier an improved fit due to a larger contact surface between the collar and the side surface.
  • the flange runs through the web up to the collar of the flange and achieves a firm fit between the flange and the channel.
  • the flow barrier is firmly connected to the collar of the flange using fastening screws.
  • volume flow controller can be used in a wall of a building for a flow path from an outer wall to the inner wall in a room, either directly or in conjunction with other ventilation devices, without any further assembly or processing required.
  • Fig. 1 the volume flow regulator in perspective view with cut-out channel of a first embodiment of a flow barrier in partially open position of a permanent opening and a variable opening with flow of a medium
  • Fig. 2 the volume flow controller according to Fig. 1 in cross-sectional view
  • Fig. 3 the volume flow regulator in perspective view with cut-out channel of a first embodiment of a flow barrier in partially open position of a permanent opening and closed position of a variable opening with flow of a medium
  • Fig. 4 the volume flow controller according to Fig. 3 in cross-sectional view
  • Fig. 5 the volume flow controller in perspective view with cut-out channel of a first embodiment of a flow barrier in fully open position of a permanent opening and open position of a variable opening with flow of a medium
  • Fig. 7 shows the flow barrier of a first embodiment of the volume flow regulator in perspective view with a flange for mounting according to Fig. 5,
  • Fig. 8 shows the flow barrier of a first embodiment of the volume flow controller in perspective view according to Fig. 1,
  • Fig. 9 the flow barrier with a flange of a first embodiment of the volume flow regulator in a perspective exploded view according to Fig. 7,
  • Fig. 10 the flow barrier or aperture with different designs of a section of the permanent opening
  • Fig. 1 the volume flow controller in perspective view with cut-out channel of a second embodiment of a flow barrier in partially open position of a permanent opening and closed position of a variable opening with flow of a medium
  • Fig. 12 the volume flow controller according to Fig. 1 1 in cross-sectional view
  • Fig. 13 the volume flow controller in perspective view with cut-out channel of a second design variant of a flow barrier in fully open Position of a permanent opening and open position of a variable opening with flow of a medium.
  • Fig. 1 and Fig. 11 show a perspective view of a volume flow regulator 1 according to the invention.
  • the volume flow regulator 1 according to the invention has a channel 2 as a passage for a volume flow, the medium 4 preferably being air.
  • a flow barrier 7, T or orifice is arranged in the channel 2.
  • the channel 2 determines the flow direction 3 of the medium 4, wherein a circumferentially fixed web 6 is formed on a channel wall 5 inside the channel 2, which fixes the flow barrier 7, 7' arranged transversely to the flow direction 3 of the medium 4 in the channel 2.
  • the flow barrier 7, 7' rests in the web 6 as shown in Fig. 2 and Fig. 12.
  • the flow barrier 7, 7' forms at least two openings 8, 8'; 9, 9', of which the first opening 8, 8' is a cutout 10, 10' arranged on the flow barrier 7, T, which reduces the flow cross-section of the channel 2 by a partial area.
  • the first opening 8, 8' with the cutout 10, 10' reduced in relation to the cross-section of the channel 2 according to Fig. 2 and Fig. 12, is continuously flowed through by the inflowing medium 4.
  • the second opening 9, 9' according to Fig. 6 and Fig. 13 has a movable element 11, 11' for automatic opening and closing.
  • the medium 4 also flows through the movable element 11, 11', controlling the channel 2 and the flow barrier 7, 7'.
  • the movable elements 7, 7' are set depending on the pressure of the flowing medium 4 and open and close depending on the pressure ratio. If the pressure of the medium 4 is low, the movable element 11, 11' according to Fig. 5 and Fig. 6 is in an open position. If the pressure of the inflowing medium 4 increases, the element 11, 11' moves in the direction of the opening 9, 9' according to Fig. 1 and Fig.
  • the volume flow controller 1 with its movable element 11, 11' arranged on the flow barrier 7, 7' assumes a basic position that releases the ventilation path of the inflowing medium 4 through the channel 2.
  • the basic position assumes that the pressure of the medium 4 within the channel 2 is so low that the movable element 11, 11' does not have to be activated, since the pressure is a a fixed, limited area.
  • the movable element 11, 11' leaves the basic position and automatically and continuously reduces the opening 9, 9' until the openings 9, 9' are completely closed according to Fig. 3, Fig. 4, Fig. 11 and Fig. 12.
  • the surrounding body of the volume flow regulator 1, which forms the housing, is formed according to Fig. 1 and Fig. 11 by the channel 2, which forms a sealed enclosed space in which the flow barrier 7 is arranged.
  • the channel 2 is preferably circular and closed, to which the flow barrier 7, 7' adapts circumferentially.
  • Other shapes with a closed cross-section are also conceivable, such as a rectangle, square or polygon.
  • the design of the volume flow controller 1 differs according to Fig. 1 and Fig. 11 by two embodiment variants, whereby the flow barriers 7 according to Fig. 1 are delimited from each other.
  • the first embodiment with its components according to Fig. 1 to Fig. 10, such as the functional flow barrier 7 or aperture according to the invention, is fixed in the flow chamber forming channel 2 for the medium 4 adjacent to the web 6 and forms a first cutout 10 and a second cutout 12.
  • the cutout 12 is in this case superimposed by a throttle valve 14 according to Fig. 2 and Fig. 3 in a closed position, or the cutout 12 is in an open position that is continuously adjustable for the throttle valve 14 according to Fig. 1, Fig. 2, Fig. 5 and Fig. 6 for a flow of the medium 4, so that the medium 4 can flow through the first cutout 10 and, depending on the pressure of the medium 4, also through the second cutout 12.
  • the throttle valve 14 is mounted so as to be pivotable about an axis 13 and forms the movable element 11 which, in the pivotally open position, releases the medium 4, in this embodiment, the air flow at a distance from the cutout 12, the second opening 9 and automatically regulates the air flows.
  • the flow barrier 7' or aperture according to Fig. 11 to Fig. 13 is pivoted in the channel 2 about an axis 15 arranged transversely to the longitudinal direction of the channel 2 and forms the movable element 11'.
  • the flow barrier 7' or aperture has the opening 8' and the opening 9'.
  • the flow barrier 7' or aperture can be pivoted.
  • the pivoted open position of the flow barrier 7' or aperture according to Fig. 13 exposes both openings 8', 9' and represents the basic position.
  • the flow barrier 7' or aperture pivots automatically and continuously in the direction of the adjacent closed position to the web 6.
  • the opening 8' With the adjacent closed position of the Flow barrier 7' or orifice on webs 36, 37 of a flange 19' according to Fig. 1 1, the opening 8' remains free for a permanent flow of the medium 4.
  • the opening 9' is closed and does not allow any volume flow through.
  • the pressure emanating from the volume flow of the medium 4 flowing through the channel 2 is at its highest.
  • the axis 13 of the tiltable throttle valve 14 and the axis 15 of the tiltable flow barrier T itself extend transversely to the longitudinal direction in the leading channel 2 within the channel wall 5.
  • Tilting joints 22, 23, 24 arranged on the outside facing the web 6 accommodate the throttle valve 14 and the flow barrier T.
  • the tilting joints 22, 23 of the first embodiment of the flow barrier 7 according to Fig. 1 to Fig. 9 have bores 25, 26 which are freely guided and rotatably mounted on the support pins 27, 28 attached to the flow barrier 7.
  • 1 1 consists of round bearing pins 29, 30 arranged on the outside of the flow barrier 7', which are freely rotatably received in a suspension 31, 32 on the web 6.
  • the tilting joints 22, 23, 24 form the tilting axis of the movable elements 1 1, 1 1 ' and can vary in the described embodiments.
  • the movable elements 1 1 , 1 1 ' can move freely between the open basic position and the closed position or closed position.
  • Weights 31 , 32 , 33 on the movable elements 1 1 , 11 ' according to Fig. 1 , Fig. 7 and Fig. 13 enable the movable elements 1 1 , 1 1 ' to assume the open basic position by gravity when the pressure of the medium 4 is low.
  • the weights 33, 34 in the first embodiment are designed with different weights. This results in a staggered sequence of opening and closing of the two throttle valves 14 in this variant, so that after the medium 4 passes through the flow barrier 7', an even pressure distribution of the flowing medium 4 is created.
  • spring elements not shown can also be used together with the movable elements 1 1 , 1 1 ' for automatic adjustment to the basic position.
  • the spring elements can be manufactured with the movable elements 1 1 , 1 1 ' as a one-piece construction, or can be designed as separate components.
  • the opened first cutout 10' of the second embodiment according to Fig. 13 pivots together with the flow barrier 7' around the axis 15 depending on the flow ratio of the medium 4 and changes the position within the channel 2.
  • the cross-section of the second opening 9 changes depending on the pressure of the flowing medium 4. If the pressure of the medium 4 increases, the throttle valve 14 approaches the flow barrier 7 until the throttle valve 14 finally comes into contact and closes the second opening 9.
  • the flow barrier 7' approaches the web 6 arranged on the channel 2 with increasing pressure until finally a position of the flow barrier 7' against the web 6 is reached and the second opening 9' closes.
  • the flow barrier 7, 7' is preferably made of the same material as the channel 2 of the volume flow controller 1. As an alternative, other materials for manufacturing the flow barrier 7, 7' or the channel 2 are possible. A preferred material for the flow barrier 7, 7' and the channel 2 is a plastic material.
  • the web 6 is designed as a closed ring and is offset inward in the channel 2 towards the channel wall 5.
  • the web 6 extends in the direction of the interior or towards the imaginary longitudinal axis of the channel 2 of the volume flow controller 1.
  • a cross-section that is reduced compared to the channel wall 5 with an inner wall 18 of the web 6 forms opposite side surfaces 16, 17 against which the flow barrier 7, T is placed for an end position.
  • the flow barriers 7, 7' each have a flange 19, 19' which runs through the inner wall 18 of the web 6 into a resting position.
  • the flange 19 of the first embodiment is provided with a collar 20 which runs through the side surfaces 16, 17 in a supporting manner. Both flanges 19, 19' form a force-fitting or form-fitting connection with the web 6.
  • the flow barrier 7 receives an improved fit due to a larger contact surface between the collar 20 and the side surface 16, 17.
  • the fit between the flange 19 and the channel 2 is additionally strengthened.
  • the flow barrier 7 of the first embodiment is connected in the assembled state to the flange 19 by means of fastening screws 21 according to Fig. 7 and Fig. 9.
  • the threaded holes 35 provided on the collar 20 of the flange 19 are and the holes 34 provided for the passage of the fastening screws 21 on the flow barrier 7 are used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Air-Flow Control Members (AREA)

Abstract

L'invention concerne un régulateur de débit volumétrique (1), en particulier pour des systèmes de climatisation et de ventilation, comprenant un canal (2) pour guider la direction d'écoulement (3) d'un milieu (4). Une bande (6) fixée de manière circonférentielle est disposée sur une paroi de canal (5) à l'intérieur du canal (2), comprenant une barrière d'écoulement (7) qui est supportée de manière transversale par rapport à la direction d'écoulement (3) du milieu (4) en tant que membrane. La barrière d'écoulement (7, 7') forme au moins deux ouvertures (8, 8' ; 9, 9'), dont une première ouverture (8, 8') est un renfoncement (10, 10') qui permet au milieu (4) de s'écouler de manière continue à travers le canal tout en réduisant la section transversale d'écoulement du canal (2) par une sous-région. La seconde ouverture (9, 9') comporte un élément mobile (11, 11') assurant une fonction d'ouverture et de fermeture automatique, qui permet en outre au milieu (4) d'avoir un débit variable.
PCT/EP2023/072653 2022-10-05 2023-08-17 Régulateur de débit volumétrique, en particulier pour systèmes de climatisation et de ventilation Ceased WO2024074242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202022105616.1 2022-10-05
DE202022105616.1U DE202022105616U1 (de) 2022-10-05 2022-10-05 Volumenstromregler, insbesondere für klima- und lüftungstechnische Anlagen

Publications (1)

Publication Number Publication Date
WO2024074242A1 true WO2024074242A1 (fr) 2024-04-11

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Application Number Title Priority Date Filing Date
PCT/EP2023/072653 Ceased WO2024074242A1 (fr) 2022-10-05 2023-08-17 Régulateur de débit volumétrique, en particulier pour systèmes de climatisation et de ventilation

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DE (1) DE202022105616U1 (fr)
WO (1) WO2024074242A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796651A (en) * 1988-03-30 1989-01-10 LeRoy D. Ginn Variable gas volume flow measuring and control methods and apparatus
US5461932A (en) * 1991-07-15 1995-10-31 Texas A & M University System Slotted orifice flowmeter
DE19929133C2 (de) 1998-06-25 2001-06-28 Christel Becks Kunststofffenster aus Flügel und Blendrahmen
EP2154439B1 (fr) 2008-08-05 2011-12-28 TROX GmbH Régulateur du débit volumétrique, en particulier pour des installations de climatisation et d'aération
US20120042955A1 (en) * 2010-08-17 2012-02-23 Caterpillar, Inc. Dual Butterfly Control Valve and Method of Use
EP3019834B1 (fr) * 2013-07-12 2022-03-16 John C. Karamanos Dispositif de mesure de régulation de fluide

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796651A (en) * 1988-03-30 1989-01-10 LeRoy D. Ginn Variable gas volume flow measuring and control methods and apparatus
US5461932A (en) * 1991-07-15 1995-10-31 Texas A & M University System Slotted orifice flowmeter
DE19929133C2 (de) 1998-06-25 2001-06-28 Christel Becks Kunststofffenster aus Flügel und Blendrahmen
EP2154439B1 (fr) 2008-08-05 2011-12-28 TROX GmbH Régulateur du débit volumétrique, en particulier pour des installations de climatisation et d'aération
US20120042955A1 (en) * 2010-08-17 2012-02-23 Caterpillar, Inc. Dual Butterfly Control Valve and Method of Use
EP3019834B1 (fr) * 2013-07-12 2022-03-16 John C. Karamanos Dispositif de mesure de régulation de fluide

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Publication number Publication date
DE202022105616U1 (de) 2022-10-21

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