EP4170255A1 - Kompakte vorrichtung zur steuerung eines luftstroms - Google Patents

Kompakte vorrichtung zur steuerung eines luftstroms Download PDF

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Publication number
EP4170255A1
EP4170255A1 EP21203760.0A EP21203760A EP4170255A1 EP 4170255 A1 EP4170255 A1 EP 4170255A1 EP 21203760 A EP21203760 A EP 21203760A EP 4170255 A1 EP4170255 A1 EP 4170255A1
Authority
EP
European Patent Office
Prior art keywords
wall
air
chamber
valve mechanism
opening
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Withdrawn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
EP21203760.0A
Other languages
English (en)
French (fr)
Inventor
Herman Lindborg
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.)
LindinVent AB
Original Assignee
LindinVent AB
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 LindinVent AB filed Critical LindinVent AB
Priority to EP21203760.0A priority Critical patent/EP4170255A1/de
Priority to PCT/EP2022/078684 priority patent/WO2023066806A1/en
Publication of EP4170255A1 publication Critical patent/EP4170255A1/de
Withdrawn legal-status Critical Current

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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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • 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
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • 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
    • F24F13/20—Casings or covers
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material

Definitions

  • This disclosure relates to the field of devices for regulation of air flows. More specifically, solutions are presented in the field of supply air devices for variable restriction of flows for use in different types of building spaces, or between air ducts.
  • supply air devices or terminals are configured to supply air into building spaces.
  • terminals providing a steady flow have predominantly been used.
  • energy saving has been a key focus area, for both environmental and financial reasons. This has in turn led to increased use of air terminals capable of providing variable flow.
  • air can be provided according to need, and may also replace liquid-based cooling systems, by providing a controlled amount of tempered air.
  • variable flows may cause flow changes in supply air duct systems, and hence large pressure differences at the terminals. Also, modernization of older buildings for energy efficiency reasons will often require high pressure in the system, since there may oftentimes not be room for large dimension air ducts in lowered ceilings. This means that there is a need for a type of air supply device that can cope with both high and low air pressure, while providing a controlled regulated air flow.
  • a supply air terminal typically comprises a chamber, such as a metal box, with a supply air inlet, an air valve mechanism for regulation of the airflow, and a discharge opening to an air diffuser.
  • the air valve mechanism must be capable of throttling the air at high pressure, such as 200 Pa or more.
  • high pressure such as 200 Pa or more.
  • there is normally a requirement on generated sound level at the premises such as a maximum limit of 30 dB(A).
  • Airflow control at high pressure and restriction of sound level generation are substantially conflicting requirements, which require careful deign.
  • a supply air device which can be manufactured, assembled and maintained at low cost is an overall objective.
  • US8038075 presents an example of a traditional solution for throttling the air flow, based on narrowing the airstream by minimizing an opening using a damper rotatably mounted within an air duct. Variants of this pivotable plate design are well known in the art. When such an opening is closed, turbulence will appear over the damper edge and a relatively high sound level will be generated, which requires some form of damping.
  • One way of targeting sound generation is to provide brushes at the rim of the throttle so as to reduce turbulence effects.
  • US5207614 presents an alternative solution, where the working principle for flow control is to translate perforated plates with respect to each other, so as to selectively open or occlude the perforations. Also here there will be sound generation over the edges of the perforations.
  • WO2018065363A1 offers a different solution, where a first tube arranged in a chamber is connected at an open first end to a supply air inlet, wherein the first tube has a side wall which is permeable to air.
  • a throttle member is slidably connected to the first tube to change a degree of exposure of the side wall to control air flow through said side wall to the outlet.
  • the exposable side wall comprises a layer of porous material through which air is discharged.
  • An object of the inventions is to provide improvements in the field of supply air devices for controlling air flow. More specifically, it is an object to provide a device capable controlling air flow which is compact while still being able to cover a large range of air flows, and being arranged to cause minimal generation of sound.
  • a device for controlling air flow comprising:
  • Embodiments of the invention are described herein with reference to schematic illustrations of idealized embodiments of the invention. As such, variations from the shapes and relative sizes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes and relative sizes of regions illustrated herein but are to include deviations in shapes and/or relative sizes that result, for example, from different operational constraints and/or from manufacturing constraints. Thus, the elements illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the invention.
  • FIG. 1 presents a scene of use for embodiments presented herein.
  • a supply air duct 100 transports air at elevated pressure to various rooms 300 of a building complex.
  • a supply air device such as a wall mounted device 1 and/or a ceiling-mounted device 1', is connected to the supply duct 100, for controlling at least the flow of air to the room 300 through an air outlet.
  • a diffusor or similar device 200, 201 may be connected at the outlet, for convenient distribution of air in the room 300.
  • the common reference numeral 1 will be used.
  • Fig. 2 illustrates an exemplary embodiment of a supply air device 1 for use as indicated in Fig. 1 , for controlling supply air flow to a building space by wall mounting.
  • the device 1 includes a chamber 2, having a supply air inlet 3 and an air outlet 4.
  • the chamber 2 may be a metal case, e.g. of aluminum or steel sheet, and is sometimes referred to as a plenum box.
  • the chamber 2 may take any form, but the illustrated embodiment has substantially rectangular cross-sections according to the established art. Such a format is beneficial for easy mounting and installation.
  • the shown embodiment is designed for wall mounting, and has its supply air inlet 3 at a first side wall 23, and the air outlet 4 at a front wall 21.
  • the inlet opening 3 may alternatively be arranged at a back wall 22, opposite the front wall 21, in a side wall 24 opposing the side wall 23, or at a top wall 25 in various embodiment, as will be outlined.
  • a supply air duct is connectable to the inlet 3, e.g. by tight fitting to a sleeve 5.
  • the inlet may take any shape, such as having a rectangular or oval cross-section, while the shown embodiments are designed for a preferred embodiment having a circular cross-section.
  • Figs 3-5 illustrate the embodiment of Fig. 2 in different views, and will serve to describe various features and technical effects.
  • the proposed solution relates to a device 1 for controlling air flow.
  • the device 1 comprises a chamber 2, which has an air inlet 3 and an air outlet 4.
  • the chamber may have a substantially rectangular shape, with a top wall 25 and an opposing bottom wall 26, as indicated in the cross-sectional view of Fig. 4A .
  • the chamber further comprises an inner wall structure 30, which separates an inlet compartment 13 supplied by said air inlet 3, from an outlet compartment 14 at said air outlet 4.
  • the inner wall structure 30 comprises a first wall member 31 having a planar wall portion 32 comprising a layer of porous material which is permeable to air. This allows air to flow through the wall portion 32 from the inlet compartment 13 to the outlet compartment 14.
  • a valve mechanism 40 (indicated by an arrow in Fig. 2 ) is configured to move a cover member 41 over the first wall member 31 to control a degree of exposure of said wall portion 32. This way, the device is configured for controlling the airflow.
  • valve mechanism 40 By arranging the valve mechanism 40 to move the cover 41 onto the first wall member 31, by sliding the cover 42 over the planar wall portion 32, a substantially flat throttling mechanism is obtained, which occupies very little space, allowing for a compact design.
  • Fig. 4A shows the device in a substantially maximum open position, allowing for a high airflow, as indicated by the arrows.
  • the valve mechanism has instead been operated to move the cover member along the first wall member to leave only a very small, exposed part of the wall portion 32. This way, a very small airflow is obtained.
  • Figs 4A and 4B further show, by way of example, an actuator 42 of the valve mechanism 40, such as an electric motor, configured to displace the cover 41.
  • the actuator 42 may be connected to the cover 41, which acts as a throttle member, by means of a threaded rod 43, passing through a nut member 44 connected to the cover 41.
  • the actuator may be controlled by a control unit (not shown) which operates based on inter alia control signals from a flow sensor (not shown) at the inlet 3, and settings determining desired values of e.g. flow and/or temperature.
  • Figs 5A and 5B provide cut-out perspective views (i.e. without the top wall 25) of the device 1 in the throttling positions corresponding to Figs 4A and 4B , respectively.
  • the cover member 41 comprises a plate of an impermeable material, such as a sheet of plastic or metal.
  • the valve mechanism 40 is configured to linearly move said plate along the first wall member 31.
  • a benefit of this design is that the surface of the exposed wall portion 32 is a linear function of the position of the cover 41. Control of the device is thus simplified.
  • the porous material provided at the wall portion 32 through which air is discharged provides a drastic reduction of sound generation caused by the throttling of the airflow.
  • the porous material is a nonwoven fiber felt or a fabric, including e.g. polyester fiber.
  • the fiber felt comprises thermo-bonded Polyethylene Terephthalate.
  • Such materials such as the product Airfelt TM marketed by CE Commanderer AB, are normally often used as sound absorbent layers, e.g. along the inner wall of plenum boxes such as the chamber 2. Passing air at high pressure straight through such a layer of felt has a very positive silencing effect.
  • the felt 14 will provide turbulence disruption even at a very small thickness, such as 3-8 mm, e.g. 5 mm.
  • This mat e.g. be obtained using a nonwoven PET fiber felt having a density on the range of 10-50 kg/m 3 .
  • This has the positive effect that even if the side wall 13 of the first tube 10, through which the air flows, is relatively close to the walls (sides, up and down) of the chamber 2, the sound level generated can be kept at a low level even at high pressure in the supply air.
  • the first wall member 31 comprises a support structure for carrying the porous material layer.
  • the support structure may be made from a perforated metal sheet, having perforations which cover a larger portion of the wall portion than the remaining metal material of the sheet surrounding the perforations.
  • the support structure is made from a metal wire net.
  • the use of a wire net, rather than a perforated metal sheet as is common in the art, provides both low cost, easy handling, and also a substantially full opening at the wall portion 32.
  • the mesh size should be at lease such that the openings are wider than the distance between the wires, and preferably at lease 3-5 times the wire width.
  • the support structure is provided below the porous material, e.g. felt, at the first wall portion 32, such that the porous material rests on the support structure.
  • an addition support structure may be provided over the porous material, to obtain a sandwich structure.
  • the support structure may be embedded in the porous material.
  • guide members are provided on a frame part of the first wall member 31 outside the wall portion 32, onto which layer the cover member 41 is configured to slide. This may provide the suitable effect of allowing the cover member 41 to slide conveniently over the porous material layer with little friction or mechanical resistance.
  • the first wall member 31 extends at an angle to the chamber wall 21 comprising the inlet opening 3. This has the benefit of allowing for a larger maximum exposable surface of the wall portion 32, confined within the space of the chamber 2. This, in turn, allows for a great range of flow control, while at the same time a very compact chamber design can be used.
  • the first wall member 31 may be configured to extend parallel, or at an angle to, the tope 25 and bottom walls of the chamber 2.
  • the first wall member 31 extends at an angle to opposing outer walls of the chamber, e.g. chamber walls 25, 26 which are perpendicular to the front wall 21 comprising the inlet opening 3.
  • the first inner wall member 31 is therefore designed to extend diagonally through the chamber 2.
  • the chamber is, in various embodiments, designed to have a height, i.e. between opposing top 25 and bottom 26 chamber walls, which corresponds to a diameter of the inlet opening 3, i.e. to a diameter of a duct 100 for engaging with the inlet opening 3.
  • the selected dimension of the air ducts 100 sets the limit for the configurable size of the device 1 in one dimension, such as height.
  • the height of the chamber 2 can be limited to not exceed an outer diameter of the duct 100.
  • the height of the chamber 2 does not exceed the diameter associated with the inlet opening, such as the duct diameter of the ventilation system in which the device 1 is to be used, with more than 5 cm, or not more than 2 cm.
  • This still allows for convenient ways of forming the interface such as by welding or gluing a cylindric sleeve 5 for connection to a duct 100, as shown in Fig. 2 , onto an outer side wall of the chamber 2 with a sufficiently wide engagement surface between the sleeve 5 and the chamber wall at which the inlet opening is formed, at the periphery about the inlet opening 3.
  • the inner wall structure 30 not only comprises the first wall member 31, but also opposing inner side wall members 32, 33, perpendicular to the first wall member 31.
  • the opposing inner side wall members 32, 33, or at least one 32 of the opposing inner side wall members 32, 33 are thus arranged inwardly, and spaced apart from, the side walls 23, 24 of the chamber 2, such as at least the side wall 23.
  • the opposing inner side wall members 32, 33 thus configure the outlet compartment 14 to be partly contained within the inlet compartment 13, such that the outlet compartment 14 projects into the inlet compartment 13.
  • the first wall member 31 extends all the way to the back wall 22 of the chamber 2.
  • the first wall member 31 extends to the bottom outer wall 24 of the chamber 2, inwardly of the back wall 22.
  • the inner wall structure 30 comprises a back wall member 34, displaced inwardly of the chamber back wall 22.
  • a benefit of the design wherein the outlet compartment 14 is partly contained within the inlet compartment 13 is that it adds a degree of freedom for positioning of the inlet opening 3, as indicated by dashed lines in Fig. 3B . This facilitates easy production and increases the assembly options of various alternative configurations of the device 1.
  • the outlet opening 4 is formed at the side wall 23 of the chamber, which forms a front wall towards a room.
  • the device may further comprise a flap 51, hinged at the outlet opening 4 such that an open slit 53 is formed between an edge 52 of the flap and an inwardly projecting air-guiding wall 54, wherein the flap 51 is configured to pivot under influence of an airflow through the device 1 such that a width of the slit 53 is self-adjusted.
  • the slit 53 is always open, but has an adjustable width, controlled by the airflow.
  • the size of the minimum slit opening 53 may be in the range of 1-20 mm, e.g.
  • the self-adjusted width 53 accomplished by the flap 51, provides for higher velocity of the air even for low flows, such that improved air distribution is obtained.
  • the flap 51 may be suspended at a lower side of the air-guiding wall 54 and extend upwards into the inlet opening, wherein the air-guiding wall 54 forms an outlet channel which is angled upwards.
  • the flap 51 is connected by a hinge arrangement to the chamber, such as to a lower portion 55 of the inwardly projecting wall 54.
  • the inwardly projecting wall 54 form a channel for directing the air out of the device.
  • the channel directs the air at an upwards angle of 10-50 degrees, e.g. 20-45 degrees, so as to direct air towards a ceiling portion of a room for improved air distribution of supplied air.
  • the flap 51 has a balancing member 56 for calibrating the position of center of gravity for the flap with respect to a hinge axis, i.e. its axis of rotation.
  • the balancing member 56 may e.g. be a movable weight, or a clip-on element of selectable weight.
  • the balancing member allows for calibration of the device 1, such as at or before installation, or upon maintenance.
  • Figs 6A and 6B illustrate an alternative of the device 1, both of the chamber 2 and of the valve mechanism 40, which in these drawings are employed in a device 1 configured for ceiling mounting by way of example.
  • Fig. 6A shows an exploded view, depicting a chamber comprising a hood 61 forming at least top and side walls of the chamber 1, and a bottom wall 62.
  • the chamber comprises an air inlet 3 and an air outlet 4.
  • the outlet opening 4 is provided at the bottom wall 62, and runs in the periphery between the hood 61 and the bottom wall 62, as can be seen in Fig. 6B .
  • An inner wall structure comprises at least a first wall member 31 having a planar wall portion 32 comprising a layer of porous material which is permeable to air, as described.
  • the valve mechanism 40 is configured to move a cover member 41 over the first wall member 31 to control a degree of exposure of said wall portion 32.
  • the cover member comprises a plate of an impermeable material, such as metal or plastic, and the valve mechanism is configured to rotate said plate along the first wall member 31 about an axis perpendicular to the first wall member.
  • valve mechanism may further comprise an actuator (not shown) configured to rotate the cover member 41, such as an electric motor.
  • the valve mechanism of Fig. 6 may also be incorporated in a device 1 configured for wall mounting, at the first inner wall member 31.
  • the device 1 may be configured such that the first wall member 31 extends at an angle to opposing outer wall members 61, 62 of the chamber 2. Thereby, a larger exposable surface of the wall portion 32 can be obtained.
  • Figs 7A-7F illustrate another alternative embodiment of the valve mechanism 40 of the device 1, which in these drawings is shown without the chamber 2, for the sake of simplicity.
  • Fig. 7A shows an exploded view of disassembled parts
  • Fig. 7B shows an elevated view
  • Fig. 7C shows a side view, of the assembled valve mechanism.
  • Figs 7D-7E schematically illustrate three different settings of the valve mechanism 40 for control of the airflow.
  • an inner wall structure 30 of the device 1, arranged in the chamber, is configured to separate an inlet compartment from an outlet compartment of the chamber.
  • the inner wall structure comprises a first wall member 31 having a planar wall portion 32 comprising a layer of porous material which is permeable to air.
  • the valve mechanism 40 is configured to move a cover member 70 over the first wall member to control a degree of exposure of said wall portion 32.
  • the cover member 70 comprises a belt 70 of an impermeable material, i.e. impermeable to air, suspended between two rollers 72, 73 arranged at opposing ends of said wall portion 32.
  • the valve mechanism is configured to rotate the belt along the first wall member 31 to position an opening 71, formed in a portion of the belt 70, with respect to said wall portion 31.
  • the valve mechanism further comprises a suspension mechanism (not shown) for suspending the rollers72, 73, and an actuator (not shown) and for rotating at least one of the rollers 72, 73, such as an electric motor.
  • air will flow at least from the side of the valve mechanism (indicated by arrows) to the exposed part of the wall portion 31, and partly through the opening 71 in the part of the belt 70 that faces upwards in the drawing, and which is not positioned onto the wall portion 32.
  • Figs 7D to 7E schematically illustrate the valve mechanism 40 in different positions or settings, where Fig. 7D illustrates a fully closed position, Fig. 7E provides a half open position, and Fig. 7F illustrates a fully open position.
  • Figs 8A and 8B illustrate a variant of the embodiment shown in Figs 7A-7F .
  • the belt 70 may comprise two openings 71A and 71B, separated by impermeable portions along the direction of rotation of the belt 70.
  • Figs 8A and 8B illustrate an example where the two openings 71A and 71B are of substantially the same size.
  • only one opening, such as the first opening 71A has a size which corresponds to the permeable wall portion 32, and which is controlled to move along (in contact with) the first wall member 31.
  • the complementary second opening 71B may be smaller, and basically predominantly serve to increase the combined cross-section area for air to flow towards the permeable wall portion 32, particularly in a fully open position of the valve mechanism 40.
  • Fig. 8A illustrates a fully open position of the valve mechanism 40 of such an embodiment, wherein at least the first opening 71A is arranged over the permeable wall portion and the second opening 71B at least overlaps with the first opening 71A.
  • Fig. 8B illustrates a fully closed position of the valve mechanism 40, wherein an impermeable belt portion arranged in contact with the wall portion 32 completely covers the wall portion 32.
  • Fig. 7 and the variant provided in Fig. 8 have the benefit of a compact design of the valve mechanism, having a height, normal to the surface portion 32, predominantly determined by the diameter of the rollers apart from the thickness of the belt 70. Moreover, a larger part of the permeable wall member 32 can be exposed in a limited space, such as in the chamber 2, since the valve mechanism 40 adds very little width outside the wall portion 32. In other words, the valve mechanism 40 can be designed to have a smaller footprint relative to the footprint of the wall portion 32, compared to what can be obtained with the embodiments described with reference to Figs 2-6 .
  • the valve mechanism 40 can be limited to have width, in the plane of the wall portion 32 in the direction of rotation of the belt 70 (i.e. perpendicular to the rollers 72, 73), which exceeds the wall portion 32 by only the combined radii of the rollers 72, 73 (and twice the thickness of the belt 70).
  • the width in the direction parallel to the rollers 72, 73 is limited by the combined width of the strips 74 of the belt 70 which form the periphery of the opening 71, and the suspension mechanism (not shown) for the rollers. This will predominantly be determined by the how narrow these strips 74 can be made, while still providing a sufficiently durable construction.
  • the belt 70 may e.g.
  • the opening 71 (or at least 71A in the alternative embodiment of Figs 8A and 8B ) is at least as large as the permeable wall portion 32. Preferably, the opening 71, 71A completely overlaps the permeable wall portion 32 at a maximum open position of the valve mechanism.
  • valve mechanism of Figs 7-8 may be employed in a device 1 for controlling an airflow configured for ceiling mounting, wall mounting, or mounting between two duct portions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air-Flow Control Members (AREA)
EP21203760.0A 2021-10-20 2021-10-20 Kompakte vorrichtung zur steuerung eines luftstroms Withdrawn EP4170255A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21203760.0A EP4170255A1 (de) 2021-10-20 2021-10-20 Kompakte vorrichtung zur steuerung eines luftstroms
PCT/EP2022/078684 WO2023066806A1 (en) 2021-10-20 2022-10-14 Compact device for controlling an air flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21203760.0A EP4170255A1 (de) 2021-10-20 2021-10-20 Kompakte vorrichtung zur steuerung eines luftstroms

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EP4170255A1 true EP4170255A1 (de) 2023-04-26

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EP21203760.0A Withdrawn EP4170255A1 (de) 2021-10-20 2021-10-20 Kompakte vorrichtung zur steuerung eines luftstroms

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WO (1) WO2023066806A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362913A1 (de) * 1988-09-06 1990-04-11 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Selbstregelnde Klappe
US5207614A (en) 1991-11-07 1993-05-04 Brod & Mcclung - Pace Company Clean room air system
EP1378714A1 (de) * 2002-07-05 2004-01-07 Sanhem-Konsultit OY Volumenstromregler
EP1628084A1 (de) * 2003-04-23 2006-02-22 Tosho Engineering Co., Ltd. Ventilator
US8038075B1 (en) 2004-06-08 2011-10-18 Walsh Emmet M Air damper balancing system and method
US20130247995A1 (en) * 2012-03-20 2013-09-26 The Aerospace Corporation Systems and Methods for a Control Valve
CN107796058A (zh) * 2017-11-30 2018-03-13 广东美的制冷设备有限公司 壁挂式空调室内机和空调机
EP3306217A1 (de) * 2016-10-04 2018-04-11 Lindinvent AB Zuluftvorrichtung zur steuerung des zuluftstroms

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362913A1 (de) * 1988-09-06 1990-04-11 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Selbstregelnde Klappe
US5207614A (en) 1991-11-07 1993-05-04 Brod & Mcclung - Pace Company Clean room air system
EP1378714A1 (de) * 2002-07-05 2004-01-07 Sanhem-Konsultit OY Volumenstromregler
EP1628084A1 (de) * 2003-04-23 2006-02-22 Tosho Engineering Co., Ltd. Ventilator
US8038075B1 (en) 2004-06-08 2011-10-18 Walsh Emmet M Air damper balancing system and method
US20130247995A1 (en) * 2012-03-20 2013-09-26 The Aerospace Corporation Systems and Methods for a Control Valve
EP3306217A1 (de) * 2016-10-04 2018-04-11 Lindinvent AB Zuluftvorrichtung zur steuerung des zuluftstroms
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CN107796058A (zh) * 2017-11-30 2018-03-13 广东美的制冷设备有限公司 壁挂式空调室内机和空调机

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