Air Diffuser Device For Ventilating Rooms

Abstract

The invention relates to an air diffuser device (1) for ventilating rooms and to be installed in a ventilation duct opening in a wall or ceiling of a room, said air diffuser device (1) comprising a baffle element (10) having a central region (10a) and a peripheral region (10b) with a peripheral edge (12; 13) for deviating at least a part of a ventilation air flow entering said room through said ventilation duct opening in a flow direction with an air flow component parallel to said wall or ceiling. The baffle element (10) comprises a plurality of slits or grooves (11) each extending from the central region (10a) of said baffle element (10) to the peripheral region (10b) of said baffle element (10). In addition, the peripheral edge (13) of said baffle element (10) has a plurality of radially extending indentations (14) spaced from each other along the periphery of said baffle element (10).

Claims

1. An air diffuser device (1) for ventilating rooms and to be installed in a ventilation duct opening in a wall or ceiling of a room, said air diffuser device (1) comprising a baffle element (10) having a central region (10a) and a peripheral region (10b) with a peripheral edge (12; 13) for deviating at least a part of a ventilation air flow entering said room through said ventilation duct opening in a flow direction with an air flow component parallel to said wall or ceiling, characterized in that said baffle element (10) comprises a plurality of slits or grooves (11) each extending from the central region (10a) of said baffle element (10) to the peripheral region (10b) of said baffle element (10).

2. The air diffuser device according to claim 1, wherein said baffle element comprises peripherally open slits or grooves which are open at the peripheral edge of said baffle element, and/or wherein said baffle element comprises peripherally closed slits each having a bridge portion in the peripheral region for bridging the gap at the peripheral end of each slit, wherein said baffle element preferably comprises only peripherally open slits which are open at the peripheral edge of said baffle element.

3. (canceled)

4. (canceled)

5. The air diffuser device (1) according to claim 1, wherein the peripheral edge (13) of said baffle element (10) has a plurality of radially extending indentations (14) spaced from each other along the periphery of said baffle element (10), wherein said indentations are preferably spaced at regular or irregular intervals along the periphery of said baffle element.

6. (canceled)

7. The air diffuser device according to claim 5, wherein the peripheral edge of said baffle element has a zigzag-like or sawtooth-like contour.

8. The air diffuser device according to claim 5, wherein the peripheral edge of said baffle element has a wave-like or sinusoidally-shaped contour.

9. The air diffuser device according to claim 5, wherein said indentations form a contour line extending along the circumference of the baffle element, the maximum depth of said indentations being between 1/60 and 1/10, preferably between 1/50 and 1/30, of the average radial extension of the baffle element.

10. The air diffuser device according to claim 5, said air diffuser device further comprising a mounting element for mounting said baffle element to a ventilation duct.

11. The air diffuser device according to claim 10, wherein said mounting element and said baffle element are connected to each other in the central region and/or in the peripheral region of said baffle element.

12. The air diffuser device according to claim 11, wherein said mounting element and said baffle element are formed integrally (in one piece, monobloc).

13. The air diffuser device according to claim 11, wherein said mounting element has first formations and said baffle element has second formations, said first and second formations being complementary to each other for connecting said baffle element to said mounting element, wherein said mounting element and said baffle element are preferably connected adjustably with respect to each other.

14. (canceled)

15. The air diffuser device according to claim 5, wherein the contour of said baffle element along a radial direction from the central region to the peripheral region of said baffle element has a point of inflexion defining a change in curvature from a radially internal curvature region to a radially external oppositely curved curvature region of said baffle element, the contour of said baffle element along a radial direction from the central region to the peripheral region of said baffle element preferably being substantially S-shaped.

16. (canceled)

17. The air diffuser device according to claim 15, wherein the point of inflexion is located at a radial position along the baffle element contour, wherein the radial extension of the radially external curved region of said baffle element is less than the radial extension of the radially internal curved region of said baffle element, wherein the point of inflexion is preferably located at a radial position along the baffle element contour such that the radial extension of the radially external curved region of said baffle element is between 1/10 and ⅓, preferably between ⅛ and ¼, of the radial extension of the radially internal curved region of said baffle element.

18. (canceled)

19. The air diffuser device (1) according to claim 5, wherein said baffle element (10) is a first baffle element (10) and said air diffuser device (1) further comprises a second baffle element (20) located at a position upstream of said first baffle element (10).

20. (canceled)

21. (canceled)

22. The air diffuser device according to claim 19, wherein the axial spacing (distance) between said second baffle element and said first baffle element is adjustable, at least one of said first and second baffle elements preferably being threadably mounted by a thread element having as its thread axis the axis extending across the center point of the central region of said first and second baffle elements.

23. (canceled)

24. (canceled)

25. (canceled)

26. The air diffuser device (1) according to claim 22, wherein the air diffuser device (1) comprises an adjustment and locking element (30) for locking the adjusted axial spacing (distance) between said second baffle element (20) and said first baffle element (10), the axial spacing (distance) between said second baffle element and said first baffle element preferably being manually adjustable or the air diffuser device preferably comprising a drive element for adjusting the axial spacing (distance) between said second baffle element and said first baffle element.

27. (canceled)

Description

[0036] Further applications, features and advantages provided by the present invention will become more apparent from the following description and the drawings.

[0037] FIG. 1 shows several views of a preferred embodiment of the air diffuser device of the present invention.

[0038] FIG. 2 shows several views of a component of the preferred embodiment of the air diffuser device shown in FIG. 1.

[0039] FIGS. 3 to 7 show an embodiment similar to the preferred embodiment of FIG. 1 highlighting further components and functional elements included in the preferred embodiment of FIG. 1.

[0040] In FIG. 1, an air diffuser device 1 for ventilating rooms and to be installed in a ventilation duct opening in a wall or ceiling of a room is shown. The air diffuser device 1 comprises a first baffle element 10 having a central region 10a and a peripheral region 10b with a peripheral edge 12/13 for deviating at least a part of a ventilation air flow entering said room through said ventilation duct opening in a flow direction with an air flow component parallel to said wall or ceiling. The baffle element 10 comprises a plurality of slits or grooves 11 each extending from the central region 10a of said baffle element 10 to the peripheral region 10b of said baffle element 10. In addition, the air diffuser device 1 has a peripheral edge 13 of said baffle element 10 having a plurality of radially extending indentations 14 spaced from each other along the periphery of said baffle element 10. The indentations 14 are spaced at regular intervals along the periphery 10b of said baffle element 10. The peripheral edge 10b of said baffle element 10 has a wave-like or sinusoidally-shaped contour at its periphery 10b. In addition, the air diffuser device 1 comprises a second baffle element 20. Between the two baffle elements 10 and 20 a gap is defined. The air diffuser 1 also comprises a fan element 40 having a first fan blade 41, a second fan blade 42 and a third fan blade 43.

[0041] In FIG. 2, the first baffle element 10 is shown in more detail. The baffle element 10 comprises peripherally open slits or grooves 11 which are open at the peripheral edge 12/13 of said baffle element 10. In addition, the peripheral edge 12/13 of said baffle element 10 has indentations 14. A contour or contour line S of said baffle element 10 along a radial direction from the central region 10a to the peripheral region 10b of said baffle element 10 has a point of inflection SPI defining a change in curvature from a radially internal curvature region Sa to a radially external oppositely curved curvature region Sb of said baffle element 10. The contour S of said baffle element 10 along a radial direction from the central region 10a to the peripheral region 10b of said baffle element 10 is substantially S-shaped.

[0042] In FIGS. 3 to 7, an embodiment similar to the preferred embodiment of FIG. 1 is shown highlighting an adjustment and locking element 30 for locking the adjusted axial spacing (distance) between said second baffle element 20 and said first baffle element 10.

[0043] FIGS. 6 and 7 show the locking mechanism in a locked an unlocked position, respectively.

REFERENCE NUMERALS

[0044] 1 air diffuser device

[0045] 10 (first) baffle element

[0046] 10a central region

[0047] 10b peripheral region/periphery

[0048] 11 slots or grooves

[0049] 12 peripheral edge

[0050] 13 peripheral edge

[0051] 14 indentations

[0052] 20 second baffle element

[0053] 30 adjustment and locking element

[0054] 40 fan element

[0055] 41 first fan blade

[0056] 42 second fan blade

[0057] 43 third fan blade

[0058] 50 cover plate

[0059] S contour line S of said baffle element

[0060] Sa radially internal curvature region

[0061] Sb radially external oppositely curved curvature region

[0062] SPI point of inflection