Controllable air outlet nozzle

Abstract

Air outlet nozzle (10), in particular for a motor vehicle, comprising: - a tubular nozzle body (14); - a first air guide element (16) arranged in the tubular nozzle body (14), which is in contact with the tubular nozzle body (14) and forms a helical shape; - a second air guide element (18) arranged in the tubular nozzle body (14), which is in contact with the tubular nozzle body (14) and forms a helical shape, - wherein the first air guide element (16) and the second air guide element (18) are arranged offset from each other in the tubular nozzle body (14), so that a first air path (24) and a second air path (26) are formed in the tubular nozzle body (14); and - a movable actuating element (28) which in a first position closes the first air passage (24) and in a second position opens the first air passage (24), - a ring (32) which the tubular nozzle body (14) has at its air outlet opening (12a), on which lamellae (34) are attached for deflecting the airflow with a predetermined deflection angle, - wherein the lamellae (34a) arranged in the first airway (24) have a deflection angle that is different from the deflection angle of the lamellae (34b) arranged in the second airway (26), and / or wherein the lamellae (34a) arranged in the first airway (24) have a lamella length that is different from the lamella length of the lamellae (34b) arranged in the second airway (26).

Description

Field of invention

[0001] The invention relates to an air outlet nozzle, particularly in a motor vehicle. Background of the invention

[0002] Fresh air grills are used for air conditioning in vehicles. The direction of the airflow is changed by vertical and horizontal louvers.

[0003] Due to the short louvers, the airflow is not optimally deflected in the set direction. Lengthening the horizontal louvers negatively affects the vertical deflection of the airflow, and conversely, lengthening the vertical louvers would negatively affect the horizontal airflow. This is due to the staggered arrangement of the louver stacks.

[0004] The object of the invention is therefore to create an air outlet nozzle with improved airflow control.

[0005] Document DE 699 01 356 T2 discloses a system comprising a motor-driven fan and ventilation outlets, which may be designed as nozzles. Each fan is connected to a group of outlets consisting of a central outlet and at least two peripheral outlets arranged around the central outlet. The outlets have a tubular housing and a guide within the housing consisting of three guide ramps that direct the air flowing upstream and downstream of the outlets. The airflow is first guided in a radial plane, then in a spiral direction along the length of an axis relatively central to the outlets.

[0006] The air duct described in document DE 10 2009 050 377 A1 has air guide sections and air channels that are partially separated from each other by a fluid. The air channel has a partially non-circular cross-sectional shape. This non-circular cross-sectional shape has a middle section and a rear section.

[0007] Document DE 10 2005 054 295 A1 discloses an air outlet comprising an air guide duct and an outer sub-duct arranged around an inner sub-duct. The external sub-duct is provided with a swirl guide on the exhaust-actuated air guide at the outlet side. The air guide is designed as a vane ring.

[0008] The device described in document DE 10 2009 039 466 A1 comprises an air regulating element arranged in an air duct and having a helical surface with an axis of symmetry, wherein the extent of the air regulating element along the axis of symmetry is variable to regulate the airflow. The axis of symmetry is arranged parallel to the longitudinal axis of the air duct, and the air regulating element comprises a fixed end section and a movable end section, the fixed end section being connected to the air duct. A further air regulating element is arranged coaxially with the first-mentioned air regulating element.

[0009] Document DE 10 2004 038 016 A1 shows an air outlet comprising an air duct divided into parallel cylindrical sub-channels and an air guide device. Summary of the invention

[0010] According to the invention, this problem is solved by an air outlet nozzle, in particular for a motor vehicle, comprising a tubular nozzle body; a first air guide element arranged in the tubular nozzle body, which is in contact with the tubular nozzle body and forms a helical shape; a second air guide element arranged in the tubular nozzle body, which is in contact with the tubular nozzle body and forms a helical shape, wherein the first air guide element and the second air guide element are arranged offset from each other in the tubular nozzle body, so that a first air path and a second air path are formed in the tubular nozzle body; and a movable actuating element, which closes the first air path in a first position and opens the first air path in a second position.The tubular nozzle body has a ring at its air outlet opening, to which vanes are attached for deflecting the airflow at a predetermined angle. The vanes arranged in the first air path have a different angle of deflection than those arranged in the second air path, and / or the vanes in the first air path have a different length than those arranged in the second air path.

[0011] The spiral shape of the air guide elements imparts a swirl to the airflow, thus giving it a stable direction. Since the first air path is closed in the first position of the movable control element, all air can only exit through the second air path with a swirl, resulting in a focused and sharp airflow spot. In the second position of the movable control element, air can exit through both air paths simultaneously, resulting in a diffuse and less sharp flow. Furthermore, the airflow can be present in both air paths upon entering the air outlet nozzle, although in the first position of the movable control element, air can only exit from the second air path. The louvers on the ring of the air outlet opening allow for even more precise control of the airflow. In particular, different deflection angles can be set depending on the vehicle type.In general, the ring with the louvers forms a fresh air grill, whereby the louvers can be optimally designed for the desired airflow. The louvers can thus be optimally designed for the desired airflow.

[0012] The air outlet nozzle according to the invention can comprise both symmetrical and asymmetrical spiral shapes for the first and second air guide elements. Furthermore, the air guide elements can be designed such that the volumes in the first and second air paths differ from one another. For example, the airflow is more diffuse in the second position of the movable control element the larger the volume of the first air path is compared to the second air path. Conversely, the airflow is more focused in the first position of the movable control element the larger the volume of the first air path is compared to the second air path.

[0013] According to one embodiment, the air outlet nozzle further comprises a connecting element that is arranged between the first air guide element and the second air guide element in the first air path, in the direction of airflow, upstream of the movable actuating element, such that it closes the first air path. The movable actuating element closes an opening in the first air guide element in the first position and opens it in the second position, so that the first and second air paths are connected. This allows air to easily flow from the second air path into the first air path through the opening in the first air guide element in the second position of the movable actuating element, thus opening the first air path. The connecting element therefore enables further advantageous embodiments of the air outlet nozzle according to the invention: The connecting element can be designed as a partition between the first air guide element and the second air guide element, thus enabling simpler manufacturing of the air outlet nozzle according to the invention.

[0014] In a preferred embodiment, the connecting element is designed as a common origin surface with a branch from which both air guide elements branch out in the direction of airflow. This results in a particularly advantageous guidance of the airflow through the two helical air guide elements.

[0015] According to a further embodiment, the ring is connected to the tubular nozzle body. When the movable actuating element is in its first position and the airflow exits the air outlet nozzle according to the invention as a spot, the rotation of the ring enables any deflection of 360° around the previously determined deflection angle of the air outlet nozzle's vanes, since the entire tubular nozzle body can then rotate. In this case, the tubular nozzle body only needs to be mounted so that it can rotate.

[0016] According to a further embodiment, the ring is connected to the first and second air guide elements, and the ring, the first air guide element, and the second air guide element are rotatably mounted relative to the tubular nozzle body. When the movable element is in its first position and the airflow exits the air outlet nozzle according to the invention as a spot, the rotation of the ring enables any deflection of 360° around the predetermined deflection angle of the air outlet nozzle vanes, since only the ring, the first air guide element, and the second air guide element can then rotate. The tubular nozzle body can be fixed in place.

[0017] In a particularly preferred embodiment, the air outlet nozzle according to the invention comprises a closing element arranged at the air inlet opening of the tubular nozzle body, which closes both air passages in a first position and opens both air passages in a second position. This allows the entire airflow of the air outlet nozzle to be stopped in a simple manner.

[0018] According to a further embodiment, the air outlet nozzle according to the invention comprises a longitudinal axis arranged in the tubular nozzle body, to which the first air guide element and the second air guide element are attached. The longitudinal axis includes a movable control element, wherein in a first position of the control element, the actuating element is in its first position for closing the first air passage, and in a second position of the control element, the actuating element is in its second position for opening the first air passage. The longitudinal axis thus serves as a space for the control element, which controls the movable actuating element.

[0019] Preferably, in the first and second positions of the control element, the closing element is in its second position to open both airways, and in a third position of the control element, the closing element is in its first position to close both airways. This allows the control element to control both the movable actuating element and the closing element. Character description

[0020] One embodiment of the invention is described below by way of example with reference to the drawings. These show: Fig. 1a, Fig. 1b, Fig. 1c an embodiment of the air outlet nozzle according to the invention in a side view and in two front views, wherein the first air path is closed; Fig. 2a, Fig. 2b an embodiment of the air outlet nozzle according to the invention in a side view and in a front view, wherein the first air path is open; Fig. 3a, Fig. 3b an embodiment of the air outlet nozzle according to the invention in a side view and in a front view, wherein both air passages are closed; Fig. 4a, Fig. 4b An embodiment of the air outlet nozzle according to the invention in a side view and a front view, wherein the first air path is closed and the airflow exits as a spot via the second air path; and Fig. 5a, Fig. 5b an embodiment of the air outlet nozzle according to the invention in a side view and in a front view, wherein the first air path is open and the airflow exits diffusely over both air paths. Detailed description

[0021] Fig. Figure 1a shows an embodiment of an air outlet nozzle 10 according to the invention. A first air guide element 16 and a second air guide element 18, each forming a spiral shape, are arranged offset within a tubular nozzle body 14. This creates a first air path 24 and a second air path 26. They can be arranged about a longitudinal axis 38. The two air guide elements 16 and 18 are each in contact with the wall of the tubular nozzle body 14, so that essentially no air can flow between the air guide elements 16 and 18 and the wall.

[0022] A connecting element 30 is arranged between the air guide elements 16 and 18, which is Fig. 1a is designed as a common origin surface, which branches into the air guide elements 16 and 18 at the junction 22. This initially closes off the first air path 24 in the direction of airflow.

[0023] Fig. Figure 1b shows a front view of the air outlet nozzle 10 according to the invention. The cross-section of the first air path 24 is shown hatched. As in Fig. As shown in Figure 1b, the cross-sectional area of ​​the first air passage 24 is larger than the cross-sectional area of ​​the second air passage 26. Accordingly, the volume of the first air passage 24 is also larger than the volume of the second air passage 26. Since in Fig. 1b If the first air path 24 is closed, all the air can only flow out of the air outlet nozzle 10 via the second air path 26. Due to the spiral shape of the air guide elements 16 and 18, this results in a directed and sharp airflow spot with a swirl that exits the air outlet nozzle 10 according to the invention and into Fig. 4b is illustrated.

[0024] Furthermore, in Fig. 1a A movable actuating element 28 is discernible, which is arranged in the direction of airflow downstream of the connecting element 30 with the branch 22. The movable actuating element 28 can, for example, be formed as part of the first air guide element 16. In its first position, the movable actuating element 28 closes an opening 20 in the first air guide element 16. Thus, in the first position of the movable actuating element 28, the first air path 24 is closed.

[0025] The second position of the movable actuating element 28 is in Fig. Figure 2a illustrates that the movable actuating element 28 here releases the opening 20, thereby connecting the first air passage 24 and the second air passage 26. Air can thus flow from the second air passage 26 into the first air passage 24 and exit across the entire cross-sectional area of ​​the air outlet opening 12a, which in Fig. 2b is illustrated. This results in a rather diffuse or fine airflow in the second position of the movable actuating element 28, which exits from the air outlet nozzle 10 according to the invention and into Fig. 5b is illustrated.

[0026] Furthermore, it shows Fig. 3 a closing element 36 arranged at the air inlet opening 12b of the tubular nozzle body 14, which in its first position closes both air passages 24 and 26. This prevents air from flowing out of the air outlet nozzle 10. This is indicated by the hatched area in the Fig. Figure 3b illustrates this. In the second position of the closure element 36, both air passages 24 and 26 are open (not shown).

[0027] The various positions of the movable actuating element 28 and the locking element 36 can be set with a control element 40. According to the Fig. In figures 1 to 3, the control element 40 is arranged in the longitudinal axis 38. According to one embodiment, the control element 40 extends beyond the air outlet opening in at least one position. This ensures easy operation of the control of the air outlet nozzle according to the invention.

[0028] The control element can have different positions: in a first position, the opening 20 is closed by the movable actuating element 28 ( Fig. 1a). In a second position, the opening 20 is released by the movable actuating element 28 ( Fig. 2a). In a third position, it is conceivable that both airways 24 and 26 are closed by the closing element 36 ( Fig. 3a) are.

[0029] In another embodiment, a ring 32 is arranged at the air outlet opening 12a, which has louvers 34. The louvers 34 are attached to the ring 32 at a predetermined deflection angle.

[0030] As in Fig. As can be seen in Figure 4b, the louvers 34b, which direct air from the second air passage 26, have a greater length than those in Fig. The louvers 34a shown in Figure 5b direct air from the first air passage 24. The deflection angle of the louvers 34a and 34b can also differ. In this way, the desired airflows can be achieved.

[0031] In another embodiment, the ring 32 is fixedly connected to the nozzle body 14. If air only flows out through the second air path 26 ( Fig. 1a, Fig. 4b) and the ring 32 is rotated, the second air path 26 also rotates as described in the Fig. 1b and Fig. Figure 1c illustrates this. It is conceivable that ring 32 can rotate 360°. This rotation of the ring then enables any 360° deflection of the airflow spot by the previously determined deflection angle of the air outlet nozzle louvers.

[0032] The ring 32 can also be connected to the first air guide element 16 and the second air guide element 18, and these are rotatably mounted in the tubular nozzle body 14. The ring 32, together with the air guide elements 16 and 18, can rotate 360°. This rotation of the ring allows for any 360° deflection of the airflow spot by the predetermined deflection angle of the air outlet nozzle vanes.

[0033] In general, the air guide elements 16 and 18 can be formed by symmetrical or asymmetrical helical shapes. This allows the volumes in the air passages 24 and 26 to be varied in order to achieve different airflows in the first and second positions of the movable control element 40. For example, the volume in the second air passage 26 can be one-quarter of the total volume of the nozzle body 14, and the volume in the first air passage 24 can be three-quarters of the total volume of the nozzle body 14. Furthermore, the helical air guide elements 16 and 18 can have any number of turns and pitch.

[0034] Furthermore, more than two air guide elements can be used, so that not only a two-start screw arrangement as in Fig. 1a shown, but multi-turn screw arrangements can be formed.

[0035] In a further embodiment of the air outlet nozzle according to the invention, a partition can be formed between the first air guide element 16 and the second air guide element 18, thus closing off the first air path 24 (not shown). In this case, the two air guide elements 16 and 18 do not originate from a common source surface 30 as in Fig. 1a. For example, in an air outlet nozzle a partition can be formed between the first air guide element 16 and the second air guide element 18, in which the air guide elements 16 and 18 run parallel to each other similar to a two-start screw arrangement.

[0036] In a further advantageous embodiment, this partition can be designed as a movable actuating element 28 and in a first position close the first air passage 24 and in a second position open the first air passage 24 (not shown).

[0037] In summary, the present invention enables optimal airflow direction from a fresh air grill using long guides and minimal obstructions. Furthermore, the present invention allows for a reduction in the number of moving parts of a fresh air grill, minimizes rattling noises, provides a stable geometry (no flexible louvers), and facilitates easy operation (e.g., rotating the outer ring). The simplified design and the use of fewer components result in lower costs.

Claims

[1] Air outlet nozzle (10), in particular for a motor vehicle, comprising: - a tubular nozzle body (14); - a first air guide element (16) arranged in the tubular nozzle body (14), which is in contact with the tubular nozzle body (14) and forms a helical shape; - a second air guide element (18) arranged in the tubular nozzle body (14), which is in contact with the tubular nozzle body (14) and forms a helical shape, - wherein the first air guide element (16) and the second air guide element (18) are arranged offset from each other in the tubular nozzle body (14), so that a first air path (24) and a second air path (26) are formed in the tubular nozzle body (14); and - a movable actuating element (28) which in a first position closes the first air passage (24) and in a second position opens the first air passage (24), - a ring (32) which the tubular nozzle body (14) has at its air outlet opening (12a), on which lamellae (34) are attached for deflecting the airflow with a predetermined deflection angle, - wherein the lamellae (34a) arranged in the first airway (24) have a deflection angle that is different from the deflection angle of the lamellae (34b) arranged in the second airway (26), and / or wherein the lamellae (34a) arranged in the first airway (24) have a lamella length that is different from the lamella length of the lamellae (34b) arranged in the second airway (26). [2] Air outlet nozzle (10) according to claim 1, further comprising a connecting element (30) which is arranged between the first air guide element (16) and the second air guide element (18) in the first air path (24) in the direction of airflow in front of the movable actuating element (28) in such a way that it closes the first air path (24), and wherein the movable actuating element (28) closes an opening (20) in the first air guide element (16) in the first position and opens it in the second position, so that the first air path (24) and the second air path (26) are connected to each other. [3] Air outlet nozzle (10) according to claim 2, wherein the connecting element (30) is designed as a partition between the first air guide element (16) and the second air guide element (18). [4] Air outlet nozzle (10) according to claim 2, wherein the connecting element (30) is designed as a common origin surface with a branch (22) from which both air guide elements (16, 18) branch out in the direction of airflow. [5] Air outlet nozzle (10) according to one of the preceding claims, wherein the ring (32) is connected to the tubular nozzle body (14). [6] Air outlet nozzle (10) according to one of the preceding claims, wherein the ring (32) is connected to the first air guide element (16) and the second air guide element (18) and the ring (32), the first air guide element (16) and the second air guide element (18) are rotatably mounted with respect to the tubular nozzle body (14). [7] Air outlet nozzle (10) according to one of the preceding claims, further comprising a closing element (36) arranged at the air inlet opening (12b) of the tubular nozzle body (14), which in a first position closes both air passages (24, 26) and in a second position releases both air passages (24, 26). [8] Air outlet nozzle (10) according to one of the preceding claims, further comprising a longitudinal axis (38) arranged in the tubular nozzle body (14) and to which the first air guide element (16) and the second air guide element (18) are attached, wherein the longitudinal axis (38) has a movable control element (40), wherein - in a first position of the control element (40) the actuating element (28) is in its first position for closing the first air passage (24), and - in a second position of the control element (40) the actuating element (28) is in its second position to release the first air path (24). [9] Air outlet nozzle (10) according to claim 8, wherein in the first and second positions of the control element (40) the closing element (36) is in its second position to release both air passages (24, 26), and in a third position of the control element (40) the closing element (36) is in its first position to close both air passages (24, 26).

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