WO2010110723A1 - Air flow regulating device - Google Patents

Air flow regulating device Download PDF

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Publication number
WO2010110723A1
WO2010110723A1 PCT/SE2010/050304 SE2010050304W WO2010110723A1 WO 2010110723 A1 WO2010110723 A1 WO 2010110723A1 SE 2010050304 W SE2010050304 W SE 2010050304W WO 2010110723 A1 WO2010110723 A1 WO 2010110723A1
Authority
WO
WIPO (PCT)
Prior art keywords
air flow
regulating device
flow regulating
damper
apertures
Prior art date
Application number
PCT/SE2010/050304
Other languages
French (fr)
Inventor
Bengt Sellö
Martin SELLÖ
Original Assignee
Inventiair 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 Inventiair Ab filed Critical Inventiair Ab
Priority to EP10756420.5A priority Critical patent/EP2411742B1/en
Publication of WO2010110723A1 publication Critical patent/WO2010110723A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • F16K47/045—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member and the closure member being rotatable
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an air flow regulating de- vice for controlling air flow in an air supply device, or more particularly to a device according to the preamble of claim 1.
  • the invention also relates to an air supply system provided with such an air flow regulating device.
  • Air supply systems or ventilation systems are commonly used in private and public buildings, as well as in vehicles and vessels, such as air crafts and ships.
  • an air supply system comprises one or more fans connected via air supply ducts to one or more air supply devices for blowing air into a room.
  • the purpose of the air supply system is to replace the existing air in the room, which may be too cold or too warm, or may contain impurities, and therefore reduces the comfort for persons staying in the room.
  • an air flow regulating device is usually mounted in a duct portion for feeding air through the air supply device.
  • the purpose of the air flow regulating device is to supply a desired air flow to the air supply device for the proper functioning of the same.
  • An air supply device of this kind is described in the Swedish patent application SE0900359-1.
  • the document SE9802372-4 discloses an air supply device com- prising a rotatable damper blade, which is rotatable from a closed position to an open position at a predetermined angle. Furthermore, the damper blade is rotatable back to the closed position, and also to be automatically positioned in any intermediate positions while being controlled by a thermal device coupled to said damper blade.
  • An object of the present invention is to provide an alternative solution to the problem of controlling the air flow in an air supply device. It is another object of the invention to reduce turbulence in the air flowing through the regulating device. w
  • an air flow regulating device for controlling the air flow in an air supply device, comprising a duct portion in which a damper, having one or
  • an air supply system comprising at least one air flow regulating device described above.
  • the air supply system further comprises :
  • At least one adjustment device operably coupled to said control device for providing an adjustment signal to the same, so that the air flow regulating device is switched from said first into said second mode of operation, or vice versa.
  • FIG 1 schematically shows an embodiment of an air supply system according to the present invention
  • Figure 2A shows, in a perspective view, an embodiment of a flow regulating device according to the invention in a second mode of operation
  • FIG. 2B shows, in a perspective view, the embodiment of the flow regulating device in Figure 2A in a first mode of operation
  • Figure 2C shows a longitudinal section (in a top view) through a flow regulating device according to the invention in the second mode of operation
  • Figure 2D shows a longitudinal section (in a top view) through a flow regulating device according to the invention in the first mode of operation
  • FIG. 3A shows a circular aperture defined by a collar in a front view; and - Figure 3B shows in cross section the aperture in Figure 3A.
  • FIG 1 shows schematically an embodiment of an air supply system 20 according to the invention for buildings, vehicles or vessels.
  • the air supply system 20 comprises, in this particular embodiment, two air supply devices 6, 6' for blowing air into a room (not shown in Figure 1) .
  • the air supply devices 6, 6' are connected to an air duct system 21, of which only a part is shown in Figure 1, for supplying air to the air supply devices 6, 6' .
  • Two flow regulating devices 1, 1' according to the invention are mounted in a duct portion 2 of air ducts 21 supplying air to the air supply devices 6, 6' .
  • the system further comprises a control device 9 and two adjustment devices 10, which will be explained in more detail in the following disclosure.
  • the upper left air flow regulating device 1 operates in a second mode of operation, while the lower right air flow regulating device 1' operates in a first mode of operation, so the air flow from the air supply device 6 connected to the upper left air flow regulating device 1 is substantially lower than the air flow from the air supply device 6' connected to the lower right air flow regulating device 1' .
  • FIGS 2A and 2B show, in a perspective views, an air flow regulating device 1 in a first and second mode of operation, respectively.
  • the air flow regulating device 1 comprises a duct portion 2 which is part of (e.g. integrated), or mounted in connection with, the air supply devices 6, 6' as shown in Figure 1.
  • a blade damper 3 is rotatably arranged in the duct portion 2 by means an actuating device 5, 8 fastened to the damper 3 by means of screws, but other fastenings means such as nuts and bolts, rivets, welding or glue can be used.
  • Blade dampers with a diameter in the interval of 90.0 mm or 130.0 mm (provided with 4-10 apertures 4) made of sheet metal have proved to work well in tests, but other diameters of the damper 3 are of course possible, depending on the inside diameter of the duct portion 2 used together with the air flow regulating device 1.
  • the damper 3 is lacquered, e.g. with powder coat- ing, to reduce turbulence in the air flow regulating device
  • a sealing element 7 in the form of a circular rubber or soft plastic ring is arranged around the circumference of the blade damper 3. Without the sealing element 7 the turbulence and the noise in the flow regulating devices 1 increases while the performance is reduced.
  • the noise from such a high velocity air supply system can be substantial, since the air can have a velocity of 2-5 m/s or even higher in these types of air ducts.
  • the flow regulating device 1 comprises an actuating device 5, 8 with a setting element 8 connected to a rotatable holding element 5 for rotating and holding the damper 3 between the closed and open positions.
  • the setting element 8 may include a knob or handle for manual operation of the damper 6 through the rotatable holding element 5, but may in another embodi- ment comprise an electrical motor for operation of the damper 3 through the rotatable holding element 5, and the electrical motor may in turn be controlled by the control device 9 as shown in Figure 1.
  • FIGs 2C and 2D which correspond to Figures 2A and 2B, respectively, show the air flow regulating device 1 in a longitudinal section through the duct portion 2 in a top view.
  • the damper 3 which is fastened by means of the rotatable holding element 5 in the duct portion 2, is positioned substantially at right angle to the air flow, and only a low air flow (S2) through the air flow regulating device 1 is permitted since the air is only permitted to flow through the one or more apertures 4 in the direction of the arrow.
  • the damper 3 is in a position substan- tially parallel to the air flow thereby permitting a high air flow (Sl) through the air flow regulating device 1 in the direction of the arrows to an air supply device 6 not shown in Figure 2C and 2D.
  • One or more tapered, circular apertures 4 are arranged in a regular pattern on the damper 3, thereby only permitting a low air flow (S2) through the damper 3 when it is in the fully closed position.
  • Figure 3A shows an aperture 4 in a larger scale, in a front view
  • Figure 3B shows the tapered aperture 4 in Figure 3A in a cross sectional view.
  • Apertures 4 with a diameter d of 11.0 mm and arranged in a circle on the damper 3 have been tested and have proven to be suitable.
  • Other apertures 4 with a diameter d in the interval of 11-15 mm have also been effective.
  • the air velocity through these types of apertures 4 may be in the interval of 8-14 m/s.
  • the collar 11 protrudes in the direction of the air flow through the air flow regulating device 1, and has an upstream side 13 and a congruent downstream side 12, and therefore geometrically forms a part of a circular ring (e.g. with an inner radius of 4.55 mm if the diameter of the aperture is 11.0 mm) .
  • Collars 11 with the desired form, as described, can be obtained by punching holes in a damper 3 of sheet metal using appropriate punching tools .
  • the collar 11 is cut off defining a collar end 14 in the air flow direction S. It has been shown in tests that for good performance the aperture 4 inside the collar 11 should be tapered all the way through the damper in the air flow direction, which means that an angle ⁇ defining the angle between a tangent T to the curvature of the collar 11 at the collar end 14 (at the upstream side) and a line P parallel to the collar end 14 should be less than 90 ° .
  • the air flow regulating device 1 operates in the second mode of operation (M2), i.e. the damper 3 is fully closed (as shown in Figure 2A and 2C) , and air is only permitted to flow through the one or more apertures 4.
  • a low air flow (S2) is obtained through the air flow regulating device 1.
  • the air flow regulating device 1 is switched to the first mode of operation (Ml), and the damper is fully open allowing a high air flow (Sl) through the air flow regulating device 1.
  • the air flow regulating device 1 according to the invention will operate in only one of the two modes of operation described above, and hence the damper 3 must be fully closed or fully open. No intermediate positions are allowed between these two positions. It is also important that the low air flow S2 should not be greater than half of the high air flow Sl, and preferably between 10-40% of the high air flow Sl for good performance.
  • the damper 3 has six apertures 4; a configuration which has shown good performance when the damper 3 has a diameter of 125.0 mm. Other tests have shown that if the damper 3 has a diameter of 100.00 mm, then a configuration with four apertures 4 is suitable.
  • each air flow regulating device 1, 1' is arranged to be operably coupled to a control device 9 for controlling the two air flow regulating devices 1, 1'.
  • the communication can e.g. be performed by means of a signal cable 22 on which the control device 9 transmits control signals to an electrical motor in the actuating device 5, 8 for triggering the opening or closing of the damper 3.
  • the control device 9 is also operably coupled to one or more adjustment devices 10 (of which two are shown in Figure 1 with dotted lines) , such as temperature sensors for detecting the presence of person (s) in a room (e.g. IR sensors or a movement detector), or manually operated switches.
  • the function of the adjustment device 10 is to trigger an adjustment signal to said control devices 9, so that the air flow regulating device 1, 1' switches between the two modes of operation, depending on the control signal from the control device 9.
  • the air flow regulating device 1, 1' will operate in the second mode of operation (M2), but will switch into the first mode of operation (Ml) when triggered by the adjustment device 10 via the control device 9.
  • the system 20 can also be implemented so that, when the air flow regulating device 1, 1' switches into the first mode of operation (Ml), it automatically switches back to the second mode of operation (M2) after a predetermined time, e.g. after 2-4 hours, using a timer.

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  • 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

The present invention relates to an air flow regulating de- vice for controlling the air flow in an air supply device, comprising a duct portion in which a damper, having one or more apertures, is movable by means of an actuating device. The damper is operable in two modes only, namely: a first mode of operation in which said damper is fully open, thereby permitting a high air flow through said air flow regulating device; and a second mode of operation in which said damper is fully closed so that air only flows through said apertures, thereby only permitting a low airflow through said air flow regulating device, wherein the low air flow is no more than half of said high air flow. The invention also relates to an air supply system provided with such an air flow regulating device.

Description

AIR FLOW REGULATING DEVICE
Technical field
The present invention relates to an air flow regulating de- vice for controlling air flow in an air supply device, or more particularly to a device according to the preamble of claim 1. The invention also relates to an air supply system provided with such an air flow regulating device.
Background of the Invention
Air supply systems or ventilation systems are commonly used in private and public buildings, as well as in vehicles and vessels, such as air crafts and ships. Typically, an air supply system comprises one or more fans connected via air supply ducts to one or more air supply devices for blowing air into a room. The purpose of the air supply system is to replace the existing air in the room, which may be too cold or too warm, or may contain impurities, and therefore reduces the comfort for persons staying in the room.
To regulate the air flow supplied to the air supply devices, an air flow regulating device is usually mounted in a duct portion for feeding air through the air supply device. The purpose of the air flow regulating device is to supply a desired air flow to the air supply device for the proper functioning of the same. An air supply device of this kind is described in the Swedish patent application SE0900359-1.
The document SE9802372-4 discloses an air supply device com- prising a rotatable damper blade, which is rotatable from a closed position to an open position at a predetermined angle. Furthermore, the damper blade is rotatable back to the closed position, and also to be automatically positioned in any intermediate positions while being controlled by a thermal device coupled to said damper blade.
Summary of the Invention
5 An object of the present invention is to provide an alternative solution to the problem of controlling the air flow in an air supply device. It is another object of the invention to reduce turbulence in the air flowing through the regulating device. w
According to one aspect of the present invention the above mentioned objects are achieved by an air flow regulating device for controlling the air flow in an air supply device, comprising a duct portion in which a damper, having one or
15 more apertures, is movable by means of an actuating device, and the damper being operable in two modes only, namely:
- a first mode of operation in which the damper is fully open, being substantially parallel to the direction of the air flow and thereby permitting a high air flow 0 through the air flow regulating device; and a second mode of operation in which the damper is fully closed, being positioned substantially at right angle to the direction of the air flow so that air only flows through said apertures, thereby only permitting a low air 5 flow through the air flow regulating device,
- wherein the low air flow is no more than half of said high air flow; and
- wherein said apertures are tapered in the air flow direction through the damper. 0
Various embodiments of an air flow regulating device according to the invention are disclosed in the dependent claims 2- An advantage with an air flow regulating device according to the present invention is that the damper only operates in two well defined positions, and is therefore easy to set in either one of these positions. It is also easy to manufacture the device due to the fact no consideration has to be taken to any intermediate positions for the damper. Energy savings are possible with the device, since only a low air flow is permitted through the device in its normally closed position. Also, with the device according to the invention, reduced turbulence is obtained in the air flow regulating device, and therefore, also the noise from the device is kept at a low level .
According to another aspect of the invention, as stated in claim 13, the above mentioned objects are achieved by an air supply system comprising at least one air flow regulating device described above. The air supply system further comprises :
- at least one control device operably coupled to the air flow regulating device; and
- at least one adjustment device operably coupled to said control device for providing an adjustment signal to the same, so that the air flow regulating device is switched from said first into said second mode of operation, or vice versa.
An embodiment of an air supply system according to the invention is disclosed in the dependent claim 14.
Other advantages and applications of the present invention will be apparent from the following detailed description of embodiments of the invention. Brief description of the Drawings
The appended drawings are intended to clarify and explain the present invention in which:
Figure 1 schematically shows an embodiment of an air supply system according to the present invention;
Figure 2A shows, in a perspective view, an embodiment of a flow regulating device according to the invention in a second mode of operation;
- Figure 2B shows, in a perspective view, the embodiment of the flow regulating device in Figure 2A in a first mode of operation;
Figure 2C shows a longitudinal section (in a top view) through a flow regulating device according to the invention in the second mode of operation; - Figure 2D shows a longitudinal section (in a top view) through a flow regulating device according to the invention in the first mode of operation;
- Figure 3A shows a circular aperture defined by a collar in a front view; and - Figure 3B shows in cross section the aperture in Figure 3A.
Detailed description of embodiments of the Invention
Figure 1 shows schematically an embodiment of an air supply system 20 according to the invention for buildings, vehicles or vessels. The air supply system 20 comprises, in this particular embodiment, two air supply devices 6, 6' for blowing air into a room (not shown in Figure 1) . The air supply devices 6, 6' are connected to an air duct system 21, of which only a part is shown in Figure 1, for supplying air to the air supply devices 6, 6' .
Two flow regulating devices 1, 1' according to the invention are mounted in a duct portion 2 of air ducts 21 supplying air to the air supply devices 6, 6' . The system further comprises a control device 9 and two adjustment devices 10, which will be explained in more detail in the following disclosure.
In Figure 1, the upper left air flow regulating device 1 operates in a second mode of operation, while the lower right air flow regulating device 1' operates in a first mode of operation, so the air flow from the air supply device 6 connected to the upper left air flow regulating device 1 is substantially lower than the air flow from the air supply device 6' connected to the lower right air flow regulating device 1' .
Figures 2A and 2B show, in a perspective views, an air flow regulating device 1 in a first and second mode of operation, respectively. The air flow regulating device 1 comprises a duct portion 2 which is part of (e.g. integrated), or mounted in connection with, the air supply devices 6, 6' as shown in Figure 1. A blade damper 3 is rotatably arranged in the duct portion 2 by means an actuating device 5, 8 fastened to the damper 3 by means of screws, but other fastenings means such as nuts and bolts, rivets, welding or glue can be used. Blade dampers with a diameter in the interval of 90.0 mm or 130.0 mm (provided with 4-10 apertures 4) made of sheet metal have proved to work well in tests, but other diameters of the damper 3 are of course possible, depending on the inside diameter of the duct portion 2 used together with the air flow regulating device 1. According to an embodiment of the invention, the damper 3 is lacquered, e.g. with powder coat- ing, to reduce turbulence in the air flow regulating device
1, and therefore also the noise generated in the device 1.
To seal the damper 3 against the inside of the duct portion
2, when the damper 3 is in closed position, a sealing element 7 in the form of a circular rubber or soft plastic ring is arranged around the circumference of the blade damper 3. Without the sealing element 7 the turbulence and the noise in the flow regulating devices 1 increases while the performance is reduced. The noise from such a high velocity air supply system can be substantial, since the air can have a velocity of 2-5 m/s or even higher in these types of air ducts.
The flow regulating device 1 comprises an actuating device 5, 8 with a setting element 8 connected to a rotatable holding element 5 for rotating and holding the damper 3 between the closed and open positions. The setting element 8 may include a knob or handle for manual operation of the damper 6 through the rotatable holding element 5, but may in another embodi- ment comprise an electrical motor for operation of the damper 3 through the rotatable holding element 5, and the electrical motor may in turn be controlled by the control device 9 as shown in Figure 1.
Figures 2C and 2D, which correspond to Figures 2A and 2B, respectively, show the air flow regulating device 1 in a longitudinal section through the duct portion 2 in a top view. In Figure 2C, the damper 3, which is fastened by means of the rotatable holding element 5 in the duct portion 2, is positioned substantially at right angle to the air flow, and only a low air flow (S2) through the air flow regulating device 1 is permitted since the air is only permitted to flow through the one or more apertures 4 in the direction of the arrow. In Figure 2D, the damper 3 is in a position substan- tially parallel to the air flow thereby permitting a high air flow (Sl) through the air flow regulating device 1 in the direction of the arrows to an air supply device 6 not shown in Figure 2C and 2D. One or more tapered, circular apertures 4 are arranged in a regular pattern on the damper 3, thereby only permitting a low air flow (S2) through the damper 3 when it is in the fully closed position. Figure 3A shows an aperture 4 in a larger scale, in a front view, and Figure 3B shows the tapered aperture 4 in Figure 3A in a cross sectional view. Apertures 4 with a diameter d of 11.0 mm and arranged in a circle on the damper 3 have been tested and have proven to be suitable. Other apertures 4 with a diameter d in the interval of 11-15 mm have also been effective. The air velocity through these types of apertures 4 may be in the interval of 8-14 m/s.
A smoothly curved collar 11, as shown in Figure 3A and 3B, defines the tapered aperture 4. The collar 11 protrudes in the direction of the air flow through the air flow regulating device 1, and has an upstream side 13 and a congruent downstream side 12, and therefore geometrically forms a part of a circular ring (e.g. with an inner radius of 4.55 mm if the diameter of the aperture is 11.0 mm) . Collars 11 with the desired form, as described, can be obtained by punching holes in a damper 3 of sheet metal using appropriate punching tools .
From Figure 3B, it can be seen that the collar 11 is cut off defining a collar end 14 in the air flow direction S. It has been shown in tests that for good performance the aperture 4 inside the collar 11 should be tapered all the way through the damper in the air flow direction, which means that an angle α defining the angle between a tangent T to the curvature of the collar 11 at the collar end 14 (at the upstream side) and a line P parallel to the collar end 14 should be less than 90 ° . Under normal conditions, the air flow regulating device 1 operates in the second mode of operation (M2), i.e. the damper 3 is fully closed (as shown in Figure 2A and 2C) , and air is only permitted to flow through the one or more apertures 4. Accordingly, a low air flow (S2) is obtained through the air flow regulating device 1. If triggered, the air flow regulating device 1 is switched to the first mode of operation (Ml), and the damper is fully open allowing a high air flow (Sl) through the air flow regulating device 1. There- fore, the air flow regulating device 1 according to the invention will operate in only one of the two modes of operation described above, and hence the damper 3 must be fully closed or fully open. No intermediate positions are allowed between these two positions. It is also important that the low air flow S2 should not be greater than half of the high air flow Sl, and preferably between 10-40% of the high air flow Sl for good performance.
In Figures 2A and 2B, the damper 3 has six apertures 4; a configuration which has shown good performance when the damper 3 has a diameter of 125.0 mm. Other tests have shown that if the damper 3 has a diameter of 100.00 mm, then a configuration with four apertures 4 is suitable.
In the air supply system 20 shown in Figure 1, each air flow regulating device 1, 1' is arranged to be operably coupled to a control device 9 for controlling the two air flow regulating devices 1, 1'. The communication can e.g. be performed by means of a signal cable 22 on which the control device 9 transmits control signals to an electrical motor in the actuating device 5, 8 for triggering the opening or closing of the damper 3. The control device 9 is also operably coupled to one or more adjustment devices 10 (of which two are shown in Figure 1 with dotted lines) , such as temperature sensors for detecting the presence of person (s) in a room (e.g. IR sensors or a movement detector), or manually operated switches. The function of the adjustment device 10 is to trigger an adjustment signal to said control devices 9, so that the air flow regulating device 1, 1' switches between the two modes of operation, depending on the control signal from the control device 9. For normal conditions, the air flow regulating device 1, 1' will operate in the second mode of operation (M2), but will switch into the first mode of operation (Ml) when triggered by the adjustment device 10 via the control device 9. The system 20 can also be implemented so that, when the air flow regulating device 1, 1' switches into the first mode of operation (Ml), it automatically switches back to the second mode of operation (M2) after a predetermined time, e.g. after 2-4 hours, using a timer.

Claims

1. Air flow regulating device (1) for controlling air flow in an air supply device (6), comprising a duct portion (2) in which a damper (3), having one or more apertures (4), is movable by means of an actuating device (5, 8), characterized in that said damper (3) is operable in two modes only, namely:
- a first mode of operation (Ml) in which said damper (3) is fully open, being substantially parallel to the direction of the air flow and thereby permitting a high air flow (Sl) through said air flow regulating device ( 1 ) ; and a second mode of operation (M2) in which said damper (3) is fully closed, being positioned substantially at right angle to the direction of the air flow so that air only flows through said apertures (4), thereby only permitting a low air flow (S2) through said air flow regulating device (1), - wherein the low air flow (S2) is no more than half of said high air flow (Sl); and
- wherein said apertures are tapered in the air flow direction through said damper (3) .
2. Air flow regulating device (1) according to claim 1, wherein said apertures (4) are circular in shape, and are arranged in a regular pattern on said damper (3) .
3. Air flow regulating device (1) according to claim 2, wherein each of said apertures (4) is defined by a smoothly curved collar (11) protruding in the direction of the air flow through said air flow regulating device (1) when said air flow regulating device (1) operates in said second mode of operation (M2) .
4. Air flow regulating device (1) according to claim 1, wherein said apertures (4) are punched holes on said damper (3) .
5 5. Air flow regulating device (1) according to claim 1, wherein said apertures (4) have a diameter (d) in the interval 11-15 mm.
6. Air flow regulating device (1) according to claim 1, W wherein said damper (3) is a blade damper which is substantially circular in shape, and said actuating device (5, 8) comprises a rotatable holding element (5) for holding said blade damper, so that said blade damper (3) is rotatable in said duct portion (2) between said open and closed positions.
15
7. Air flow regulating device (1) according to claim 6, wherein said blade damper (3) comprises sealing means (7) arranged at the circumference of said blade damper (3) for sealing said blade damper (3) against the inside of said duct 0 portion (2) .
8. Air flow regulating device (1) according to claim 6, wherein said blade damper (3) has a diameter of 90-130 mm and is provided with 4-10 apertures (4) . 5
9. Air flow regulating device (1) according to claim 1, wherein said actuating device (5, 8) comprises a setting element (8) for moving said damper (3) between said open and closed positions. 0
10. Air flow regulating device (1) according to claim 9, wherein said setting element (8) includes a manually operable knob and/or an electrical motor.
11. Air flow regulating device (1) according to claim 1, wherein said duct portion (2) and said damper (3) are made of sheet metal provided with a lacquer coating.
12. Air flow regulating device (1) according to any of claims 1-11, wherein said low air flow (S2) is 10 % to 40 % of said high air flow (Sl) .
13. Air supply system (20) comprising at least one air flow regulating device (1) according to claim 1, said air supply system (20) further comprising:
- at least one control device (9) operably coupled to said at least one air flow regulating device (1); and
- at least one adjustment device (10) operably coupled to said at least one control device (9) for providing an adjustment signal to the same, so that said air flow regulating device (1) is switched from said first (Ml) into said second mode (M2) of operation, or vice versa.
14. Air supply system (20) according to claim 13, wherein said adjustment device (10) is a temperature sensor and/or a manually operated switch and/or a sensor for detecting the presence of persons in a room.
PCT/SE2010/050304 2009-03-27 2010-03-18 Air flow regulating device WO2010110723A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10756420.5A EP2411742B1 (en) 2009-03-27 2010-03-18 Air flow regulating device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0900399-7 2009-03-27
SE0900399A SE534880C2 (en) 2009-03-27 2009-03-27 airflow regulator

Publications (1)

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WO2010110723A1 true WO2010110723A1 (en) 2010-09-30

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SE (1) SE534880C2 (en)
WO (1) WO2010110723A1 (en)

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Publication number Priority date Publication date Assignee Title
CN103438228A (en) * 2013-08-20 2013-12-11 山东莱德机械有限公司 Self-sealing center line-type butterfly valve
CN106468184A (en) * 2015-08-19 2017-03-01 中航商用航空发动机有限责任公司 Aero-engine Bearing cavity pressure adjusting means and its pressure-regulating valve
WO2018197969A1 (en) * 2017-04-24 2018-11-01 Fläktgroup Sweden Ab Air flow regulating device

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FI87835B (en) * 1989-04-13 1992-11-13 Vilho Hinkkanen Control damper for a ventilation ducting system
DE29505070U1 (en) * 1994-12-21 1995-05-18 Ltg Lufttechnische Gmbh Device for adjusting a gas volume flow
EP0924475A1 (en) * 1997-12-15 1999-06-23 Kyoritsu Air Tech Inc. Airflow-adjusting damper
WO2000001991A1 (en) * 1998-07-02 2000-01-13 Pax Electro Products Ab Improvements in and relating to an air supply valve
US6273141B1 (en) * 2000-06-22 2001-08-14 The Babcock & Wilcox Company Variable resistance device for a high pressure air supply system
DE10141158A1 (en) * 2001-08-17 2003-03-06 Ltg Ag Adjusting device for adjusting air flow has throttle valve with a displaceable part which at corresponding opening angle interacts with internal wall of gas distributor box

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Publication number Priority date Publication date Assignee Title
SE433258B (en) * 1976-11-23 1984-05-14 Schako Metallwarenfabrik AIR DISTRIBUTION CHARGER FOR VENTILATION AND AIR CONDITIONING EQUIPMENT
FI87835B (en) * 1989-04-13 1992-11-13 Vilho Hinkkanen Control damper for a ventilation ducting system
DE29505070U1 (en) * 1994-12-21 1995-05-18 Ltg Lufttechnische Gmbh Device for adjusting a gas volume flow
EP0924475A1 (en) * 1997-12-15 1999-06-23 Kyoritsu Air Tech Inc. Airflow-adjusting damper
WO2000001991A1 (en) * 1998-07-02 2000-01-13 Pax Electro Products Ab Improvements in and relating to an air supply valve
US6273141B1 (en) * 2000-06-22 2001-08-14 The Babcock & Wilcox Company Variable resistance device for a high pressure air supply system
DE10141158A1 (en) * 2001-08-17 2003-03-06 Ltg Ag Adjusting device for adjusting air flow has throttle valve with a displaceable part which at corresponding opening angle interacts with internal wall of gas distributor box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438228A (en) * 2013-08-20 2013-12-11 山东莱德机械有限公司 Self-sealing center line-type butterfly valve
US9995399B2 (en) 2013-08-20 2018-06-12 Shandong Lede Machinery Co., Ltd. Self-sealing butterfly valve
CN106468184A (en) * 2015-08-19 2017-03-01 中航商用航空发动机有限责任公司 Aero-engine Bearing cavity pressure adjusting means and its pressure-regulating valve
WO2018197969A1 (en) * 2017-04-24 2018-11-01 Fläktgroup Sweden Ab Air flow regulating device

Also Published As

Publication number Publication date
EP2411742B1 (en) 2018-09-19
EP2411742A1 (en) 2012-02-01
SE0900399A1 (en) 2010-09-28
SE534880C2 (en) 2012-01-31
EP2411742A4 (en) 2017-08-02

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