EP1767877A2 - Ventilation grate - Google Patents
Ventilation grate Download PDFInfo
- Publication number
- EP1767877A2 EP1767877A2 EP06076762A EP06076762A EP1767877A2 EP 1767877 A2 EP1767877 A2 EP 1767877A2 EP 06076762 A EP06076762 A EP 06076762A EP 06076762 A EP06076762 A EP 06076762A EP 1767877 A2 EP1767877 A2 EP 1767877A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- opening
- ventilation grate
- coupling elements
- grate according
- 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- Withdrawn
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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
- 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
- F24F13/105—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers composed of diaphragms or segments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/14—Details or features not otherwise provided for mounted on the ceiling
Definitions
- the invention relates to a ventilation grate as described in the preamble of claim 1.
- the invention relates in particular to a ventilation grate provided with an air collecting housing and a front plate covering the air collecting housing, through which air can be blown from the air collecting housing, while the front plate is provided with arcuate openings extending from a center outwards.
- a spiralling air outflow can be effected.
- the openings have a tangential component enabling the realization of a selective airflow moving from the center of the grate outwards, or an airflow directed further towards the center.
- a wider spread of the airflow over the space takes place, in the second case, the airflow is stronger and more focussed.
- the arcuate shape causes a particular diverging action to occur (with air flows directed outwards), in contrast with a converging action, with airflows directed towards the center.
- this curved shape has a more favourable diverging spreading effect than ordinary, not-curved outflow openings. Such a grate will therefore provide a more favourable spread of the airflow.
- blades are provided at the rear side of the openings, for guiding the airflow in a selective manner in a cross direction relative to the opening.
- a drawback of the known grates is that the adjustability is limited in that the blades are to be mounted either on one side of the opening or on the other side of the opening. This requires disassembly of the air grate and refitting of the blades, which is labour intensive. Another problem is that for an optimal outflow effect, the blade is to be placed accurately relative to the opening so as not to cause turbulences in the airflow, which may compromise a stable outflow. This requires the blade to be accurately sealed at the edge, while, ideally, the blade is to link up with the edge for an optimal outflow effect. Due to these requirements, it has, up to the present day, appeared virtually impossible to provide an adjustable blade which can move the air flow selectively inwards or outwards, viewed from the center of the grate.
- the object of the invention is to provide a ventilation grate which solves these problems and which can provide the intended selective outflow, in particular for arcuate outflow openings.
- a ventilation grate according to claim 1 is provided, in particular a ventilation grate wherein the blade is of tiltable design, and having a bistable, curved shape so that, selectively, one of the longitudinal sides of the blade can be maintained pressed against a longitudinal side of an opening.
- the bistable shape commands a good sealing between the blade and the edge of the opening.
- the blade can be designed so as to follow the shape of the opening so that, each time, an optimal outflow effect is realized.
- a grate 1 with radial, generally rectangular openings 2 in a front plate 3 will be discussed.
- Such a grate 1 has a symmetrical structure, while an outflow direction from opening 2 has no special effect, as appears from the arrows P in Fig. 1.
- Fig. 2 shows the cross section of the line I-I of Fig. 1.
- the continuous lines and the broken lines indicate the opposite outflow directions that can be provided by reversing a blade 4.
- Fig. 3 shows a configuration of openings of a grate 5, in which a longitudinal axis of openings 6 has a tangential component.
- Fig. 4 shows a grate 7 with a configuration of openings in which the openings 8 have a curved design.
- this curved shape causes a diverging effect and, when blowing in the direction Q, a converging effect is realized. Additionally, it has appeared that this swirl structure is a visually attractive form that finds a ready market.
- the curved shape of the configuration shown in Fig. 4 poses a problem because in order for the blades 4 to link up with the edge, the connection of the blades 4 must be optimal.
- this is relatively simple and the blade can easily be configured such that the edge links up with the opening edge 9 of a grate opening 8.
- this is relatively difficult. Due to the complex geometry it is not easy to have the edges link up with the opening.
- Fig. 6 shows the solution to the above posed problems, in particular in a first embodiment, a flexible blade 11 of, for instance, a flexible plastic connected to a rigid but flexible central axis 12 of, for instance, spring steel, which is held in hinge points 13.
- the flexible blade 11 can be formed of a thin plate (not represented) while the central axis is absent. The blade can then be curvedly confined between two hinge points 13. Due to the geometry, the blade 11 will be curved, so that, viewed in the direction of arrow R, it is hollow. Additionally, due to the resilient action of the flexible blade 11 and/or the central axis 12, the blade will be pressed against the edge 9 of the opening 8. Through accurate positioning, it can then be designed to follow the shape with respect to the edge of the opening 9.
- the blade 11 Through tilting of the blade 11 relative to the hinge points 13, the blade 11 is pressed from a convex to a hollow shape, so that the blade swings to the opposite side. At the other side, the former upper side of the blade contacts the opening edge 9 and closes it off due to the spring tension in the flexible blade 11 and/or central axis 12. Therefore, the flexible blade 11 is provided with a bistable shape, so that, selectively, one of the longitudinal sides of the blade 11 can be maintained pressed against an opening edge 9 of the opening.
- Fig. 7 shows two variants of the blade in not-curved position, in which a first version 14 is shown with generally parallel designed curved blade sides, and a second version 15 with blade sides designed to be generally diverging.
- FIG. 8 A shows a top side and bottom side 16, 17, respectively (with an orientation in attached condition) of an adjustable blade 18 in an alternative embodiment of a ventilation grate according to the invention.
- Fig. 8B shows this blade 18 in alternative coupled conditions I and II in the front plate 3 of the grate (not further shown), while it is shown how the blade 18 is arranged in the opening 8 of the grate, in order to selectively guide the air flow in cross directions P and Q relative to the opening normal.
- an upstanding attachment structure 19 is provided, having coupling elements 20, 21.
- a part of the coupling elements 20 is provided at a low position 22 situated virtually in the plane of the blade 18.
- Another part of the coupling elements 21 is provided at a high position 23, remote from the plane of the blade.
- the blade 18 can be selectively coupled to the low coupling elements 20, along one of the longitudinal sides of the blade, or to the high coupling elements 21, along the opposite longitudinal side, respectively, along a longitudinal side 9 of an opening 8.
- the high coupling elements 20 or the low coupling elements 21, respectively are provided on opposite surface sides of the blade.
- the blade can project somewhat outside the front plate 3 so that a more favourable airflow is obtained as the outflow air does not impact against the flat edge of the blade.
- coupling elements 20 21 is hook-shaped.
- the invention is not limited to the embodiments given in the examples but can contain variations and modifications thereon which fall in the range of the claims as defined in the following.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
Description
- The invention relates to a ventilation grate as described in the preamble of
claim 1. The invention relates in particular to a ventilation grate provided with an air collecting housing and a front plate covering the air collecting housing, through which air can be blown from the air collecting housing, while the front plate is provided with arcuate openings extending from a center outwards. - With such apparatus, known as swirl grates, a spiralling air outflow can be effected. Here, through their curved shape, the openings have a tangential component enabling the realization of a selective airflow moving from the center of the grate outwards, or an airflow directed further towards the center. In the first case, a wider spread of the airflow over the space takes place, in the second case, the airflow is stronger and more focussed.
- Furthermore, the arcuate shape causes a particular diverging action to occur (with air flows directed outwards), in contrast with a converging action, with airflows directed towards the center. With respect to a rectangular shape, it is supposed that this curved shape has a more favourable diverging spreading effect than ordinary, not-curved outflow openings. Such a grate will therefore provide a more favourable spread of the airflow.
- In order to converge or diverge this airflow, with such grates, blades are provided at the rear side of the openings, for guiding the airflow in a selective manner in a cross direction relative to the opening.
- A drawback of the known grates is that the adjustability is limited in that the blades are to be mounted either on one side of the opening or on the other side of the opening. This requires disassembly of the air grate and refitting of the blades, which is labour intensive. Another problem is that for an optimal outflow effect, the blade is to be placed accurately relative to the opening so as not to cause turbulences in the airflow, which may compromise a stable outflow. This requires the blade to be accurately sealed at the edge, while, ideally, the blade is to link up with the edge for an optimal outflow effect. Due to these requirements, it has, up to the present day, appeared virtually impossible to provide an adjustable blade which can move the air flow selectively inwards or outwards, viewed from the center of the grate.
- The object of the invention is to provide a ventilation grate which solves these problems and which can provide the intended selective outflow, in particular for arcuate outflow openings.
- Therefore, a ventilation grate according to
claim 1 is provided, in particular a ventilation grate wherein the blade is of tiltable design, and having a bistable, curved shape so that, selectively, one of the longitudinal sides of the blade can be maintained pressed against a longitudinal side of an opening. - With the ventilation grate according to the invention, the bistable shape commands a good sealing between the blade and the edge of the opening. Here, in both positions, the blade can be designed so as to follow the shape of the opening so that, each time, an optimal outflow effect is realized.
- Further advantages and features will become clear by means of the following description of the drawings. Herein, it should be understood that the exemplary embodiments serve as illustration, and are not intended to be limitative.
- In the Figures:
- Fig. 1 shows a conventional grate with radially oriented outflow openings;
- Fig. 2 shows a cross section of the line I-I of Fig. 1;
- Fig. 3 shows a conventional grate with outflow openings with a tangential component;
- Fig. 4 shows a conventional grate with outflow openings with a curved shape in tangential direction;
- Fig. 5 shows a cross section of the line I-I of Fig. 4 for a rectangular blade;
- Fig. 6 shows an embodiment according to the invention of the adjustable air blade according to the invention;
- Fig. 7 shows alternative embodiments of the air blade according to the invention; and
- Fig 8 shows an adjustable blade in an alternative elaboration of a ventilation grate according to the invention.
- Presently, with reference to Fig. 1, the operation of a
grate 1 with radial, generallyrectangular openings 2 in afront plate 3 will be discussed. Such agrate 1 has a symmetrical structure, while an outflow direction fromopening 2 has no special effect, as appears from the arrows P in Fig. 1. Here, Fig. 2 shows the cross section of the line I-I of Fig. 1. Here, the continuous lines and the broken lines indicate the opposite outflow directions that can be provided by reversing a blade 4. - In contrast with Fig. 1, Fig. 3 shows a configuration of openings of a
grate 5, in which a longitudinal axis ofopenings 6 has a tangential component. With such a configuration, the symmetry is breached and the outflow direction is relevant to the effect on the airflow. In particular, if the outflow is directed in the direction of the continuous arrow (P), an airflow directed further outward occurs, having, consequently, a greater outflow range. If the outflow is directed in the direction of the interrupted arrow (Q), the outflow is limited to a smaller outflow range and the outflow may be somewhat stronger. Through variations of airflows directed inward and outward, the relative proportions of the space ventilated by thegrate 6 can be taken into account. - Further, Fig. 4 shows a grate 7 with a configuration of openings in which the
openings 8 have a curved design. When blowing in the direction P, this curved shape causes a diverging effect and, when blowing in the direction Q, a converging effect is realized. Additionally, it has appeared that this swirl structure is a visually attractive form that finds a ready market. With respect to the rectangular shape, the curved shape of the configuration shown in Fig. 4 poses a problem because in order for the blades 4 to link up with the edge, the connection of the blades 4 must be optimal. For a rectangular shape, this is relatively simple and the blade can easily be configured such that the edge links up with theopening edge 9 of agrate opening 8. However, with a curved shape, this is relatively difficult. Due to the complex geometry it is not easy to have the edges link up with the opening. - This can be solved by utilizing a rectangular blade 4 as shown in Fig. 5, which is positioned behind the grate opening in substantially longitudinal direction of the curved opening. This can, however, not be done properly when the curvature of the opening is too substantial. Furthermore, due to a varying "dead space"10 between blade 4 and
front plate 3, the outflow profile will be adversely influenced, it is then, in particular, more difficult to have the air flow out along thegrate plate 3 due to turbulence problems. - Fig. 6 shows the solution to the above posed problems, in particular in a first embodiment, a
flexible blade 11 of, for instance, a flexible plastic connected to a rigid but flexiblecentral axis 12 of, for instance, spring steel, which is held inhinge points 13. Alternatively, theflexible blade 11 can be formed of a thin plate (not represented) while the central axis is absent. The blade can then be curvedly confined between twohinge points 13. Due to the geometry, theblade 11 will be curved, so that, viewed in the direction of arrow R, it is hollow. Additionally, due to the resilient action of theflexible blade 11 and/or thecentral axis 12, the blade will be pressed against theedge 9 of theopening 8. Through accurate positioning, it can then be designed to follow the shape with respect to the edge of theopening 9. - Through tilting of the
blade 11 relative to thehinge points 13, theblade 11 is pressed from a convex to a hollow shape, so that the blade swings to the opposite side. At the other side, the former upper side of the blade contacts theopening edge 9 and closes it off due to the spring tension in theflexible blade 11 and/orcentral axis 12. Therefore, theflexible blade 11 is provided with a bistable shape, so that, selectively, one of the longitudinal sides of theblade 11 can be maintained pressed against anopening edge 9 of the opening. - Fig. 7 shows two variants of the blade in not-curved position, in which a
first version 14 is shown with generally parallel designed curved blade sides, and asecond version 15 with blade sides designed to be generally diverging. - Finally, Fig. 8 A shows a top side and
bottom side adjustable blade 18 in an alternative embodiment of a ventilation grate according to the invention. For the sake of comprehensibility, in the Figures, only a few elements are designated with reference numerals. Fig. 8B shows thisblade 18 in alternative coupled conditions I and II in thefront plate 3 of the grate (not further shown), while it is shown how theblade 18 is arranged in theopening 8 of the grate, in order to selectively guide the air flow in cross directions P and Q relative to the opening normal. - Along the longitudinal sides of the
blade 18, anupstanding attachment structure 19 is provided, havingcoupling elements coupling elements 20 is provided at alow position 22 situated virtually in the plane of theblade 18. Another part of thecoupling elements 21 is provided at ahigh position 23, remote from the plane of the blade. As is represented in Fig. 8B, theblade 18 can be selectively coupled to thelow coupling elements 20, along one of the longitudinal sides of the blade, or to thehigh coupling elements 21, along the opposite longitudinal side, respectively, along alongitudinal side 9 of anopening 8. Advantageously, thehigh coupling elements 20 or thelow coupling elements 21, respectively, are provided on opposite surface sides of the blade. As a result, the blade can project somewhat outside thefront plate 3 so that a more favourable airflow is obtained as the outflow air does not impact against the flat edge of the blade. Although different types of coupling elements can be provided, in one elaboration, at least one part of thecoupling elements edge 9 of theopening 8. The invention is not limited to the embodiments given in the examples but can contain variations and modifications thereon which fall in the range of the claims as defined in the following.
Claims (8)
- A ventilation grate provided with:- an air collecting housing- a front plate covering the air collecting housing, through which air can be blown from the air collecting housing;- which front plate is provided with arcuate openings proceeding from a center outwards;- a blade provided in or behind these openings for selectively guiding an air flow in a cross direction with respect to the opening;- which blade is of adjustable design, having a bistable, curved shape so that, in a selective manner, one of the longitudinal sides of the blade can be maintained pressed against a longitudinal side of an opening.
- A ventilation grate according to claim 1, characterized in that the blade cooperates with a flexible curved axis which is of tiltable design with respect to hinge points arranged at the end face of the blade.
- A ventilation grate according to claim 1, characterized in that the blade is formed from a flexible metal plate which is confined under tension between hinge points arranged at the end face of the blade.
- A ventilation grate according to claim 1, characterized in that the blade has a flexible sealing edge.
- A ventilation grate according to claim 1, characterized in that the blade has an arcuate shape with a curvature that follows the edges of the arcuate opening.
- A ventilation grate according to claim 1, characterized in that along the longitudinal sides of the blade, an upstanding attachment structure is provided having coupling elements at a low position situated virtually in the plane of the blade and at a high position remote from the plane of the blade such that the blade can be selectively coupled along one of the longitudinal sides to the low coupling elements, or along the opposite longitudinal side, to the high coupling elements, respectively, along a longitudinal side of an opening.
- A ventilation grate according to claim 6, characterized in that the high and low coupling elements, respectively, are provided on opposite surface sides of the blade.
- A ventilation grate according to claim 6 or 7, characterized in that the coupling elements are hook-shaped such that they are clamped against the opposite sides of the opening
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1030021A NL1030021C2 (en) | 2005-09-23 | 2005-09-23 | Ventilation grid. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1767877A2 true EP1767877A2 (en) | 2007-03-28 |
EP1767877A3 EP1767877A3 (en) | 2010-07-07 |
Family
ID=36424665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06076762A Withdrawn EP1767877A3 (en) | 2005-09-23 | 2006-09-22 | Ventilation grate |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1767877A3 (en) |
NL (1) | NL1030021C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2405211A1 (en) * | 2010-07-08 | 2012-01-11 | FCR S.p.A. | Diffuser for an air conditioning plant |
CN113490818A (en) * | 2018-12-28 | 2021-10-08 | 斯普灵格开利有限公司 | Grille for ventilation equipment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221634A (en) * | 1963-04-25 | 1965-12-07 | Helle Jens Boesen | Fresh-air valve |
EP0129000A2 (en) * | 1983-06-20 | 1984-12-27 | Waterloo Grille Co. Ltd. | A diffuser |
EP0211150A2 (en) * | 1985-07-27 | 1987-02-25 | Schako Metallwarenfabrik Ferdinand Schad KG | Outlet with vortex flow |
EP0472934A1 (en) * | 1990-08-25 | 1992-03-04 | Schako Metallwarenfabrik Ferdinand Schad Kg | Ceiling air outlet |
DE29914962U1 (en) * | 1999-08-26 | 1999-10-14 | Bermes Peter | Air outlet, especially for automotive ventilation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9308798U1 (en) * | 1993-06-14 | 1993-10-07 | "Schako" Metallwarenfabrik Ferdinand Schad KG Zweigniederlassung Kolbingen, 78600 Kolbingen | Swirl outlet |
-
2005
- 2005-09-23 NL NL1030021A patent/NL1030021C2/en not_active IP Right Cessation
-
2006
- 2006-09-22 EP EP06076762A patent/EP1767877A3/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221634A (en) * | 1963-04-25 | 1965-12-07 | Helle Jens Boesen | Fresh-air valve |
EP0129000A2 (en) * | 1983-06-20 | 1984-12-27 | Waterloo Grille Co. Ltd. | A diffuser |
EP0211150A2 (en) * | 1985-07-27 | 1987-02-25 | Schako Metallwarenfabrik Ferdinand Schad KG | Outlet with vortex flow |
EP0472934A1 (en) * | 1990-08-25 | 1992-03-04 | Schako Metallwarenfabrik Ferdinand Schad Kg | Ceiling air outlet |
DE29914962U1 (en) * | 1999-08-26 | 1999-10-14 | Bermes Peter | Air outlet, especially for automotive ventilation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2405211A1 (en) * | 2010-07-08 | 2012-01-11 | FCR S.p.A. | Diffuser for an air conditioning plant |
CN113490818A (en) * | 2018-12-28 | 2021-10-08 | 斯普灵格开利有限公司 | Grille for ventilation equipment |
CN113490818B (en) * | 2018-12-28 | 2024-05-14 | 斯普灵格开利有限公司 | Grille for ventilation equipment |
Also Published As
Publication number | Publication date |
---|---|
NL1030021C2 (en) | 2007-03-26 |
EP1767877A3 (en) | 2010-07-07 |
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