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EP4491966A1 - Dispositif de réglage d'un débit volumique d'air - Google Patents

Dispositif de réglage d'un débit volumique d'air Download PDF

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Publication number
EP4491966A1
EP4491966A1 EP23184608.0A EP23184608A EP4491966A1 EP 4491966 A1 EP4491966 A1 EP 4491966A1 EP 23184608 A EP23184608 A EP 23184608A EP 4491966 A1 EP4491966 A1 EP 4491966A1
Authority
EP
European Patent Office
Prior art keywords
throttle
air
flow
flow element
trailing edge
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.)
Pending
Application number
EP23184608.0A
Other languages
German (de)
English (en)
Inventor
Ricardo GARZÓN MOLINA
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.)
Viessmann Holding International GmbH
Original Assignee
Viessmann Climate Solutions SE
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 Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Priority to EP23184608.0A priority Critical patent/EP4491966A1/fr
Priority to CN202410912270.3A priority patent/CN119309305A/zh
Priority to US18/768,720 priority patent/US20250020361A1/en
Publication of EP4491966A1 publication Critical patent/EP4491966A1/fr
Pending 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
    • F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation

Definitions

  • the present invention relates to a device for adjusting an air volume flow, in particular an air supply valve.
  • Air distribution networks are used in buildings in particular for ventilation and sometimes for air conditioning. Controlled residential and office ventilation systems are now sophisticated systems that use central or decentralized ventilation units.
  • the wall, ceiling or floor openings of a building have air outlets with inserts that are connected to the air distribution network.
  • air outlets change the shape of the air flow and/or regulate the air volume flow. They are called supply air valves or exhaust air valves depending on the direction of the flow into or out of the room. They limit the cross-section in the air duct, whereby the size of this limitation can be selected using throttles.
  • WO 2022/101056 A1 discloses an air volume throttle valve with air guide bodies in the form of blades of a rotor.
  • the air guide bodies are each formed from a first and a second air guide unit, which can be rotated relative to one another, so that the distance between the air guide bodies and thus the flow-through cross-section of an air duct can be changed.
  • This device enables the free flow cross-section to be changed while the position of the narrowest flow cross-section remains the same. This makes it easier to control the valve.
  • the device according to the invention for adjusting an air volume flow in particular in an air distribution network, has a flow-through air channel which defines a longitudinal central axis.
  • the device has a throttle in order to change a size of a flow-through cross section of the air channel.
  • a flow element is arranged in the air channel, wherein the flow element has a jacket whose cross section increases in a first direction away from the throttle.
  • the jacket has an end region facing away from the throttle, which inclines in a second direction and forms a trailing edge, wherein the second direction is opposite to the first direction.
  • the air flow is applied to the wall or ceiling early on, i.e. close to the supply air valve. This prevents backflow areas. This means that there is hardly any dirt or dust deposits on the wall or ceiling.
  • the cross-section of the trailing edge is wedge-shaped.
  • This upwardly inclined trailing edge can be used with throttles of different designs.
  • the trailing edge is preferably designed to be circumferential. It preferably has no interruptions that could disrupt the homogeneous distribution of the outflowing air.
  • the flow element is designed to be air-impermeable, so that all the air that is passed through the device flows along the outer surface of the flow element.
  • the flow element is bell-shaped.
  • the bell widens towards the exit, i.e. towards the inside of the building.
  • the casing or at least the end area with the trailing edge is rotationally symmetrical.
  • the air flow is optimized when the casing is curved inwards except for the end area facing away from the throttle.
  • the outer surface of the casing is preferably flat, ie without elevations and depressions.
  • the air flow can therefore spread unhindered.
  • the device has a circumferential surface opposite the end region of the casing, which together with the end region forms the exit region, i.e. an exit opening of the air duct. If this circumferential surface also inclines in the second direction, the flow behavior is further optimized.
  • the surrounding surface is flat in order to have no interfering elements.
  • the outlet opening is preferably designed as an annular channel which is defined by the end region forming the trailing edge and by the circumferential surface, wherein the annular channel has a cross-sectional area which remains constant in the direction of the longitudinal central axis. This leads to a further optimization of the flow behavior.
  • a further optimization occurs when the inclination of the end area in the area of the trailing edge and the inclination of the surrounding surface are the same.
  • the device has a housing in which the throttle and the flow element are arranged.
  • the peripheral surface is a flange of the housing, wherein the flange is designed to rest against a wall. This facilitates the installation of the device in a wall opening and also enables the outlet opening of the air duct to be arranged close to the ceiling or the wall.
  • This local arrangement is also facilitated if the second direction leads towards the wall when the device is installed in the wall opening.
  • the assembly and adjustment of the device is facilitated if the flow element is hollow and can be closed with a lid.
  • the position of the flow element relative to the housing or relative to the wall surface does not change when the throttle setting is changed.
  • the cross-section of the outlet channel or the outlet opening of the air channel preferably does not change when the throttle setting is changed.
  • Figure 1 shows a valve V according to the invention, which is installed in a wall opening 10 of a wall 11.
  • the wall opening 10 is preferably part of an air distribution network of a building.
  • the terms "bottom” and “top” used in this text refer to the installation position of the valve in the wall opening of a building ceiling. If the wall opening is in another wall of a building, these terms are to be interpreted accordingly.
  • the valve V is preferably a supply air valve which directs air from an air distribution network through a wall opening into a building room. However, it can also be used as an exhaust air valve which directs air from the building room into the wall opening 10.
  • valve V is described as a supply air valve, although its function is identical to that of an exhaust air valve.
  • the valve V has, as shown in the Figures 2 to 4 can be clearly seen, a housing 2, an inner flow element 3, a pivot pin 4, a cover 5 and a throttle 6.
  • the housing 2 is preferably designed in two parts. It preferably has a round cross-section.
  • a first housing part 20 has a hollow, circular-cylindrical base body 200, the lowermost end of which forms a radially outwardly projecting flange 201. With this flange 201, the valve V rests against the building wall 11, as shown in Figure 1
  • the first flange 201 is preferably rigid and serves as a stop when inserting the valve V into the wall opening 10, as shown in Figure 1 can be seen. It forms a closure to cover irregularities in the surrounding wall 11.
  • the first flange 201 also serves to delimit an outlet opening 80 of an air duct 8, as described further down in the text. For this purpose, the first flange 201 has an incline towards the wall 11.
  • the incline is preferably achieved by continuously thinning the flange 201 towards its outer peripheral edge.
  • the downward-facing surface of the flange 201 is flat, ie without elevations or depressions.
  • the flange 201 is circumferential, closed and preferably without interruptions. Possible interruptions are holes for screwing the housing 2 into the wall opening 10.
  • the housing 2 is fixed in the wall opening in another way.
  • the base body 200 has a first step 202 and a second step 203 on its outer circumference.
  • a circumferential upper end face 204 is preferably flat.
  • the upper end face 204 has a recess 205 for the passage of the pivot pin 4.
  • a third throttle part 22 is formed, which is described further below in the text together with a first and a second throttle part 60, 61 of the throttle 6.
  • a second housing part 21 has a narrow, hollow cylindrical or ring-shaped base body 210. It is surrounded by a radially projecting second flange 211.
  • the second flange 211 is preferably designed as a flexible sealing and/or clamping ring It serves to seal and detachably fix the valve V in the wall opening 10, as shown in Figure 1 can be seen.
  • the wall opening 10 preferably has a round cross-section for this purpose.
  • the second flange 211 can be sprayed on, formed in one piece or connected to the second base body 210 in another way.
  • the second housing part 21 surrounds the upper region of the first housing part 20. It rests on the first step 202 and preferably extends to the second step 203.
  • the housing 2 encloses a central air channel which defines a longitudinal central axis L and radial directions.
  • the inner flow element 3 is arranged in the housing 2 and extends downwards towards the interior of the building, as shown in Figure 1 can be seen.
  • the inner flow element 3 is preferably hollow and can be closed at the bottom with the cover 5.
  • the flow element 3 is closed at the top except for a through opening 33 for the passage of the pivot pin 4.
  • the flow element 3 is preferably designed to be substantially rotationally symmetrical. It has a bell-shaped configuration, with a cross-section that widens downwards and a casing 30 that curves inwards. The flow element 3 preferably extends to the outer edge of the first flange 201 or beyond.
  • the flow element 3 is held fixed in the first housing part 20, preferably with a bayonet lock or with another detachable and re-establishable connection. These coupling elements are preferably arranged in the region of the longitudinal center axis L. In Figure 2 a second coupling element 220 of the first housing part 20 and a matching coupling element 34 of the flow element 3 are clearly visible. It is a plug-in and rotating connection in the form of a bayonet lock.
  • a flow channel here called air channel 8
  • air channel 8 is formed between the first housing part 20 and the flow element 3. It leads from the wall opening 10 through the throttle 6 and through an annular gap between the first flange 201 and the casing 30 of the flow element 3 into the Building interior.
  • the annular gap forms the outlet opening 80 of the air duct 8.
  • the gap is usually always the same size, regardless of the adjustability of the throttle 6 described further down in the text.
  • the outflow cross-section of the valve V therefore remains the same even if the setting of the throttle 6 changes, and thus if the flow-through cross-section of the throttle 6 changes.
  • the trailing edge 31 of the flow element 3 optimizes the outflow behavior, as shown in Figure 1 can be seen.
  • the trailing edge 31 is formed by an end region of the casing 30 which is spaced apart from the throttle 6. It is circumferential and preferably uninterrupted.
  • the casing 30 is flat at least in this end region, but preferably over the entire surface facing the throttle 6. The air flow flows over this surface.
  • the outflow behavior is further optimized thanks to the first flange 201, which also inclines upwards.
  • the inclinations are identical, so that the outlet opening has a constant cross-section in the direction of the longitudinal center axis L.
  • the shell 30 has a slightly larger diameter than the second flange 201, as shown in Figure 1 is clearly visible.
  • the flow element 3 has a lower annular edge which forms a flat lower end face 32 against which the cover 5 rests.
  • the annular edge surrounds an inlet opening which leads into a hollow interior.
  • the cover 5 has a base plate 50 with a preferably flat lower end face 51. It can be attached to and removed from the flow element 3 preferably without tools. Magnets are arranged in both components for this purpose.
  • the magnets of the flow element 3 are in Figure 2 They are marked with the reference number 35.
  • the magnets of the cover 5 are in the Figures 2 and 4 They are marked with the reference number 52.
  • the flow element 3 is preferably arranged in a fixed position with respect to the housing 2 and is preferably not adjustable at least in the direction of the longitudinal center axis L, i.e. axially.
  • the throttle 6 is arranged in the upper area of the valve V. Any throttle can be used. Preferably, it has adjustable elements for selectively narrowing the central air channel. In other embodiments, the throttle not adjustable or it only has an open and a closed position.
  • the throttle shown here has a variable cross-section that determines the air flow that can flow through the central air duct. This variable cross-section determined by the throttle 6 is referred to in this text as the flow-through cross-section.
  • the cross-section of the central air duct is preferably no longer adjustable. However, it is not necessarily the same size everywhere.
  • This subsequent cross-section is preferably formed by the distance between the preferably inwardly curved inner wall of the housing 2 and the casing 30 of the flow element 3.
  • the throttle 6 consists of three components.
  • the first throttle part 60 is connected in a rotationally fixed manner to the housing 2 and/or to the third throttle part 22.
  • the third throttle part 22 is formed in one piece with the housing 2 and is also rotationally fixed with respect to the first throttle part 60.
  • the second throttle part 61 is arranged between the first and third throttle parts 60, 22 and can be pivoted or rotated about the longitudinal center axis L.
  • the third throttle part 22 is also an independent component, which is preferably connected to the housing 2 in a rotationally fixed manner.
  • the second throttle part 61 is preferably also designed with an optimized design of its inflow or outflow surface.
  • the first throttle part 60 has locking elements in the form of rotor-like first vanes 601, which extend outwards from a common central part. This central part forms a first coupling element 600. In this example, five first vanes 601 are present. However, three, four, six or any other number of vanes can also be used.
  • hooks or lugs 602 are used for mounting exhaust air filters and/or hoods. They rest, for example, on the upper face of the second throttle part 61. This is shown in the Figures 1 , 5 and 6 clearly visible.
  • the first wings 601 widen towards their free ends. Preferably, all wings 601 are of the same shape and size. The first wings 601 are curved in the radial direction. Preferably, the area left free between two wings 601 corresponds to the area of one wing 601.
  • the upper flow surfaces of the first wings 601 are preferably curved so that an aerodynamically favorable body is formed.
  • the third throttle part 22 has blocking elements in the form of third wings 221, which form geometric counterparts to the first wings 601. In this example, they are thus also designed to be curved in the radial direction. These third wings 221 do not end freely, but rather their peripheral ends are formed on the inner wall of the first housing part 20. Their central ends merge in one piece into a middle part, which is formed by the second coupling element 220.
  • the first coupling element 600 has downwardly projecting hooks 603 which engage in receiving openings of the second coupling element 220. In this way, the first throttle part 60 is connected in a rotationally fixed manner to the third throttle part 22 and also to the housing 2.
  • the first and third wings 601, 221 are aligned with one another.
  • the first and third wings 601, 221 lie congruently on top of one another.
  • the free surface of the third wings 221 is also curved.
  • This outflow surface is thus also aerodynamically optimized.
  • the flow surfaces of the first and third wings 601, 221 are identically curved, so that the valve V forms the same inflow and outflow surfaces and can therefore be used equally for supply and exhaust air.
  • the intermediate second throttle part 61 has an outer ring 610.
  • Inwardly projecting locking elements in the form of second wings 611 are formed on the upper end of the ring 610.
  • the outer ring 610 rests with the free lower end of its casing on the second step 203 of the housing 2. It also rests with its inwardly projecting, upper peripheral edge on the upper face 204 of the housing 2. This is shown in the Figures 1 , 2 , 3 and 4 clearly visible.
  • the ring 610 and thus the second throttle part 61 is rotatable about the longitudinal central axis L, wherein it is guided during rotation by the base body 210 of the second housing part 21 and is fixed in its axial position by the lugs 602 of the first throttle part 60.
  • the second wings 611 of the second coupling part 61 end freely towards the longitudinal center axis L. They are also curved, and preferably have the same bending radii as the first and third wings 601, 221. There are the same number of second wings 611 as there are first and third wings 601, 221. There are preferably the same number of second wings 611 as there are first and third wings 601, 221.
  • the second wings 611 can be flat. Other designs are possible.
  • the second throttle disc 61 thus forms a flat disc with a circumferential guide casing, wherein the disc is arranged between the flat end faces of the first and third wings 601, 221 and can be rotated relative to these.
  • the rotation is preferably continuous. In other embodiments it is step-by-step.
  • optical, haptic and/or acoustic means are preferably present to indicate to the user that discrete positions of the throttle disc 61 have been reached. Furthermore, such means protect against unintentional adjustment.
  • the rotation of the throttle disk 61 serves to adjust the valve V. This is preferably done manually. Alternatively or additionally, however, it can also be motor-driven.
  • the adjustment can preferably also be carried out when the valve V is already mounted in the wall opening 10. This can be carried out in a simple embodiment by removing the flow element 3 and the cover 5. In a preferred embodiment, which is shown here as an example, only the cover 5 is removed, if at all.
  • the through opening 33 in the casing 31 of the flow element 3 allows access to the adjustment element, here to the rotary pin 4. This is shown in the Figures 1 to 4 clearly visible.
  • the pivot pin 4 has a pin 40, a head 41 designed as a gear and a knurling 42 on the circumference of the free end of the pin 40.
  • the knurling 42 increases the grip when the pivot pin 4 is turned by hand, without using any other tools. However, tools can also be used for this purpose.
  • the pivot pin 4 passes through the recess 205 of the first housing part 20, as shown in the Figures 1 and 2 can be seen.
  • the head 41 rests on the first housing part 20.
  • the second throttle part 61 has a toothing 612 in an area of its inner circumference.
  • the gear of the head 41 engages in this toothing 612 thanks to the recess 205.
  • the second throttle part 61 can be rotated about the longitudinal center axis L. The position of the second wings 611 relative to the first and third wings 601, 221 can thus be adjusted manually.
  • the first housing part 20 has a scale 222 next to the recess, which interacts with a reference 614 of the second throttle part 61. This allows the setting of the throttle to be noted and the rotational position of the blades relative to each other to be recognized. This is shown in the Figures 2 and 3 recognizable.
  • the device according to the invention for adjusting a volume flow optimizes the outflow behavior.

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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)
EP23184608.0A 2023-07-11 2023-07-11 Dispositif de réglage d'un débit volumique d'air Pending EP4491966A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP23184608.0A EP4491966A1 (fr) 2023-07-11 2023-07-11 Dispositif de réglage d'un débit volumique d'air
CN202410912270.3A CN119309305A (zh) 2023-07-11 2024-07-09 用于调节空气体积流量的设备
US18/768,720 US20250020361A1 (en) 2023-07-11 2024-07-10 Device for adjusting an air volume flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23184608.0A EP4491966A1 (fr) 2023-07-11 2023-07-11 Dispositif de réglage d'un débit volumique d'air

Publications (1)

Publication Number Publication Date
EP4491966A1 true EP4491966A1 (fr) 2025-01-15

Family

ID=87245611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23184608.0A Pending EP4491966A1 (fr) 2023-07-11 2023-07-11 Dispositif de réglage d'un débit volumique d'air

Country Status (3)

Country Link
US (1) US20250020361A1 (fr)
EP (1) EP4491966A1 (fr)
CN (1) CN119309305A (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405738C1 (de) * 1994-02-23 1995-06-08 Schako Metallwarenfabrik Drallauslaß
US20210302059A1 (en) * 2017-01-30 2021-09-30 Zehnder Group International Ag Air Diffuser Device For Ventilating Rooms
US20220120467A1 (en) * 2020-10-15 2022-04-21 Air Distribution Technologies Ip, Llc Diffuser assembly for an hvac system
WO2022101056A1 (fr) 2020-11-13 2022-05-19 Viessmann Climate Solutions Se Dispositif de réglage d'un débit volumétrique d'air
DE102021204015A1 (de) * 2021-04-22 2022-10-27 Maico Elektroapparate-Fabrik Gesellschaft mit beschränkter Haftung Stellventil, insbesondere für eine Lüftungseinrichtung, Verfahren zum Betreiben eines Stellventils sowie Lüftungseinrichtung mit einem Stellventil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405738C1 (de) * 1994-02-23 1995-06-08 Schako Metallwarenfabrik Drallauslaß
US20210302059A1 (en) * 2017-01-30 2021-09-30 Zehnder Group International Ag Air Diffuser Device For Ventilating Rooms
US20220120467A1 (en) * 2020-10-15 2022-04-21 Air Distribution Technologies Ip, Llc Diffuser assembly for an hvac system
WO2022101056A1 (fr) 2020-11-13 2022-05-19 Viessmann Climate Solutions Se Dispositif de réglage d'un débit volumétrique d'air
DE102021204015A1 (de) * 2021-04-22 2022-10-27 Maico Elektroapparate-Fabrik Gesellschaft mit beschränkter Haftung Stellventil, insbesondere für eine Lüftungseinrichtung, Verfahren zum Betreiben eines Stellventils sowie Lüftungseinrichtung mit einem Stellventil

Also Published As

Publication number Publication date
CN119309305A (zh) 2025-01-14
US20250020361A1 (en) 2025-01-16

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