Ventilation device, procedure and vehicle

Abstract

Ventilation device for a vehicle (2) with a vehicle seat (1) which has an air outlet opening (L) in the area of ​​a seat back (1.1), where - the air outlet opening (L) is arranged on a top surface (O) of the seat backrest (1.1) such that an airflow (S) flows towards the vehicle roof (6), wherein a number of air guide elements (3) are arranged inside the air outlet opening (L), and wherein - on the vehicle roof (6) in the area of ​​the incident airflow (S) at least one further air guide element (7) is arranged for dividing and directing the airflow (S), wherein the air guide elements (3) arranged in the area of ​​the air outlet opening (L) are for adjusting an air volume of a front partial airflow (T) v ) and rear partial airflow (T h ) are mounted in a pivotable manner, characterized by that in an upper area of ​​the seat backrest (1.1) a flap element (8) pivotably mounted to enlarge the air outlet opening (L) with a number of air guide elements (3) is arranged.

Description

[0001] The invention relates to a ventilation device for a vehicle with a vehicle seat which has an air outlet opening in the area of ​​a seat back. The invention further relates to a method for operating the ventilation device and to a vehicle with such a ventilation device.

[0002] German patent application DE 10 2016 117 443 A1 discloses a vehicle seat comprising a seat section, a backrest, and a ventilation device, as well as a method for climate-controlling such a vehicle seat. The ventilation device includes a forward air duct system with air outlets for blowing air forward through the seat surface facing the occupant. The ventilation device also includes a rear air duct system with at least one air outlet for blowing air backward. Furthermore, the ventilation device has a blower unit for generating an airflow in the forward and rear air duct systems, wherein the forward and rear air duct systems are fluidly connected or connectable to each other via a connecting section.

[0003] US Patent 2,430,335 A describes an automotive air conditioning system. An automobile or similar vehicle with an enclosed passenger compartment has means for exhausting air inwards towards an intermediate section of the passenger compartment roof, and means extending downwards from the roof in this intermediate section for directing the air forwards and backwards within the passenger compartment. These downwards extending from the roof are longitudinally adjustable to variably regulate the air distribution within the passenger compartment.

[0004] A vehicle cooling system is known from US Patent 2,989,854 A. A motor-driven vehicle has a passenger compartment with front and rear seats. The vehicle's cooling system comprises a compressor, a condenser, an evaporator, and refrigerant flow connections between them, the compressor being driven by the vehicle's engine. A duct extends forward along the floor of the passenger compartment near the rear seat and from there upward along the back of the front seat, with an outlet at its upper end between the floor and roof of the passenger compartment. The evaporator is located in the forward-extending portion of this duct. A first fan is provided in the duct to direct airflow toward the outlet. A single, one-piece cover is attached to the roof of the passenger compartment, having a central inlet opening positioned above and spaced apart from the outlet of the duct.The cover has a flat, pan-like shape to minimize its vertical extension from the passenger compartment roof. A second fan is integrated within the cover to draw in air exiting the duct outlet through the cover's inlet opening. The cover features outlet openings spaced apart from its central inlet. The second fan blows the air horizontally through these outlet openings in a variety of directions along the passenger compartment roof, with the passenger compartment walls redirecting the airflow.

[0005] The invention is based on the objective of providing a ventilation device for a vehicle that is improved compared to the prior art, a method for operating the ventilation device and a vehicle with such a ventilation device.

[0006] The problem is solved according to the invention with a ventilation device which has the features specified in claim 1, with a method which has the features specified in claim 7 and with a vehicle which has the features specified in claim 9.

[0007] Advantageous embodiments of the invention are the subject of the dependent claims.

[0008] A ventilation device for a vehicle comprises a vehicle seat which has an air outlet opening in the area of ​​a seat back. The air outlet opening is arranged on the upper side of the seat back so that an airflow flows towards the vehicle roof, wherein a number of positionable air guide elements are arranged within the air outlet opening and at least one further air guide element is arranged on the vehicle roof in the area of ​​the incident airflow for dividing and directing the airflow.

[0009] By means of a ventilation device designed in this way, it is possible to provide essentially draft-free, close-to-the-body and therefore energy-efficient ventilation of a headroom area of ​​the vehicle, especially for any position of the vehicle seat in the vehicle, with cold air.

[0010] By arranging the air outlet opening on the top of the seat back of the vehicle seat, other air outlet openings that may be present in the vehicle, for example in the area of ​​the vehicle's instrument panel, can be eliminated.

[0011] In one embodiment of the ventilation device, the additional air guide element is designed to divide the airflow into a front airflow and a rear airflow. This makes it possible to ventilate both the front and rear areas of the vehicle, particularly the rear passenger area, for example with cold air at comparatively high ambient temperatures.

[0012] According to the invention, the air guide elements arranged in the area of ​​the air outlet opening are pivotably mounted to adjust the strength of the front and rear airflows. This makes it possible to have a stronger front airflow than a stronger rear airflow, thus preventing a rear passenger from being exposed to an excessively strong rear airflow and the resulting draft that could cause muscle tension. Alternatively, the air guide elements can be positioned so that the rear airflow is stronger than the front airflow.

[0013] In a further development of the ventilation device, the seat back has a widening in an area of ​​the upper surface in the direction of a longitudinal axis of the vehicle, so that an air outlet cross-section of the air outlet opening is enlarged and thus the respective ventilation can be optimized.

[0014] According to the invention, a flap element with a number of air guide elements, pivotably mounted to enlarge the air outlet opening, is arranged in an upper area of ​​the seat back. The flap element can be positioned in a functional and a non-functional position, whereby in the functional position the air outlet opening, in particular its air outlet cross-section, can be enlarged by means of the flap element and the respective ventilation can be optimized.

[0015] In one possible embodiment, the additional air guide element is designed as a plate and pivotably mounted on the vehicle roof to divide and direct the airflow. This plate-shaped air guide element can be positioned from a non-functional to a functional position and vice versa by means of its pivotable arrangement, so that the airflow can be directed and divided as needed.

[0016] In a further additional or alternative embodiment, the further air guide element for dividing and directing the airflow is designed to be inflatable, wherein the further air guide element has the functional position in the inflated state and the non-functional position in the uninflated state.

[0017] To deflect the front partial airflow, an air deflection element is arranged in a front area of ​​the vehicle roof, so that the front partial airflow can be deflected, particularly depending on the position of the vehicle seat in the vehicle, in such a way that a headroom area of ​​a vehicle user on the vehicle seat is ventilated.

[0018] Furthermore, the invention relates to a method for operating such a ventilation device, wherein, according to the invention, it is provided that the air guide elements and optionally the pivotably mounted flap element, the further air guide element and / or the air deflection element are automatically positioned depending on the position of the vehicle seat in the vehicle, depending on the inclination of the seat back, depending on the occupancy of the seat and / or depending on the comfort and draft perception of a vehicle user and / or vehicle occupants.

[0019] By applying the method, it is possible to optimally adjust a partial airflow generated at least by means of the air guide elements and the further air guide element with regard to the vehicle user and / or a vehicle occupant in the rear area.

[0020] Furthermore, the invention relates to a vehicle with such a ventilation device, with which it is possible to direct the airflow flowing out of the air outlet opening and to divide it with respect to a vehicle interior, wherein the strength of the respective partial airflow generated is adjustable.

[0021] Exemplary embodiments of the invention are explained in more detail below with reference to drawings.

[0022] This shows: Fig. 1. Schematic perspective view of a vehicle seat with an air outlet opening, Fig. 2 schematically a vehicle with a vehicle seat according to Fig. 1 and a further air guide element arranged on a vehicle roof, Fig. 3 schematically a section of the vehicle with a stronger front partial airflow set, Fig. 4 schematically shows a section of the vehicle with a stronger rear partial airflow set, Fig. 5 schematically depicts the vehicle seat in one possible embodiment, Fig. 6 schematically the vehicle seat in an alternative embodiment with pivoted flap element, Fig. 7 schematically the vehicle seat in the alternative embodiment with closed flap element, Fig. 8 schematically a section of the vehicle with the additional air guide element designed as a plate in a functional position, Fig. 9 schematically a section of the vehicle with the additional air guide element designed as a plate in a non-functional position, Fig. 10 schematically shows a section of the vehicle with an inflatable air guide element in a functional position, Fig. 11 schematically shows a section of the vehicle with the inflatable air guide element in a non-functional position, Fig. 12 schematically the vehicle with the vehicle seat, the further air guide element and an air deflection element in a first embodiment, Fig. 13 schematically the vehicle with the vehicle seat, the further air guide element and an air deflection element in a first embodiment, Fig. 14 schematically a vehicle with glass roof sections, the vehicle seat, the further air guide element and the air deflection element in a second embodiment, Fig. 15 schematically the vehicle with the vehicle seat positioned against a direction of travel, the air guide element and the air deflection element in the first embodiment and Fig. 16 schematically a block diagram for the operation of the ventilation device.

[0023] Corresponding parts are marked with the same reference symbols in all figures.

[0024] Fig. Figure 1 shows a perspective view of a vehicle seat 1, in particular a so-called single seat, with a seat back 1.1, on which a headrest 1.2 is arranged, and a seat part 1.3.

[0025] The headrest 1.2 is arranged on an upper surface O of the seat backrest 1.1, with an air outlet opening L of a ventilation device of a type 1.1 located behind the headrest 1.2, i.e. facing towards the rear of the seat backrest 1.1. Fig. 2 partially shown vehicle 2 is arranged.

[0026] In the area of ​​the air outlet opening L, several air guide elements 3 are pivotably arranged to direct an airflow S flowing from the air outlet opening L, as shown in the following figures.

[0027] In order to largely rule out the possibility that cold air flowing from the air outlet L might land on a surface in such a way as to Fig. 2 vehicle users shown in more detail, 4 or one also shown in Fig. If the 2 vehicle occupants shown are affected, causing muscle tension due to a draft, the ventilation device is designed as described below.

[0028] The vehicle seat 1 has the air outlet opening L with the adjustable air guide elements 3, which allows a desired air outlet direction to be set.

[0029] In order to ventilate the headroom of the vehicle 2 as free from drafts as possible, the air outlet cross-section of the air outlet opening L is chosen to be comparatively large, and to guide the airflow S, in particular a cold airflow, a further air guide element 7 with two air guide surfaces A is arranged on a vehicle roof 6 in order to guide the airflow S without drafts.

[0030] Fig. Figure 2 shows a section of a vehicle 2 with the vehicle seat 1, a vehicle user 4 sitting on it, a vehicle occupant 5 in the rear area of ​​the vehicle 2 and the further air guide element 7 on the vehicle roof 6 in a possible embodiment.

[0031] According to the present embodiment in Fig. 2. The airflow S flowing from the air outlet L meets the further air guide element 7, whereby the airflow S becomes a front partial airflow T. v and a rear partial airflow T h is divided up.

[0032] The respective partial airflow T v , T h flows along the corresponding air guide surface A of the further air guide element 7, so that the front partial airflow T v a front area and the rear partial airflow T h a rear area, according to the present embodiment the rear area of ​​vehicle 2.

[0033] In the Fig. In the embodiment shown in Figure 2, the further air guide element 7 is arranged on or formed on the vehicle roof 6, wherein the further air guide element 7 is located below a section that is partially embedded in the Fig. 10 and Fig. The fairing K shown in section 11 is arranged on the vehicle roof 6 and can thus be perceived by an observer as a shape of the vehicle roof 6.

[0034] The two partial airflows T formed by means of the further air guide element 7 v , T h They essentially have the same strength, i.e., the same volume flow rate.

[0035] To create a respective partial airflow T v , T h To adjust its strength, the air guide elements 3 of the air outlet opening L can be positioned accordingly, as shown in the Fig. 3 and Fig. 4 is shown.

[0036] In Fig. 3 The air guide elements 3 are positioned in relation to the further air guide element 7 such that a larger part of the airflow S hits the air guide surface A facing the front area of ​​the vehicle 2 and the front partial airflow T v thus carries more air, especially cold air, than the rear partial airflow T. h .

[0037] Fig. Figure 4 shows an embodiment in which the air guide elements 3 of the air outlet opening L are positioned towards the rear area, so that a larger part of the airflow S is directed as the rear partial airflow T. h flows into the rear area of ​​vehicle 2.

[0038] By means of the air guide elements 3 and the further air guide element 7 it is possible to determine a ratio of the two partial air flows T v , T hto adjust precisely so that, for example, if there is no vehicle occupant 5 in the rear area, it is possible to direct the entire airflow S to the front area of ​​the vehicle 2, so that no or only comparatively little air is supplied to the rear area.

[0039] In particular, the positioning of the air guide elements 3 determines how the airflow S meets the further air guide element 7 and consequently is distributed differently in the vehicle interior.

[0040] Fig. Figure 5 shows the vehicle seat 1 in a possible embodiment, wherein the seat back 1.1 has a widening V in an area of ​​the upper surface O in the direction of a longitudinal axis x of the vehicle in order to increase the air outlet cross-section of the air outlet opening L, so that draft-free ventilation of a vehicle interior is largely possible.

[0041] The Fig. 6 and Fig. Figure 7 shows the vehicle seat 1 in an alternative embodiment, wherein the widening V is achieved by means of a flap element 8 pivotally mounted about an axis of rotation, which is in Fig. 6 in a functional position and in Fig. Figure 7 is shown in a non-functional position.

[0042] In the functional position, the flap element 8 is swung away from the seat back 1.1, thereby increasing the air outlet cross-section and thus the air outlet opening L.

[0043] In the non-functional position, the flap element 8 is pivoted towards the seat back 1.1, so that the air outlet opening L has its original air outlet cross-section.

[0044] In the Fig. 8 and Fig. 9 The further air guide element 7 is designed as a plate P, which is pivotably arranged on the vehicle roof 6. The plate P is in Fig. 8 in a functional position and in Fig. 9 shown in a non-functional position.

[0045] In the functional position, the additional air guide element 7, designed as plate P, projects from the vehicle roof 6 into the vehicle interior, whereby, by appropriate positioning of the plate P, the airflow S hits it and is thereby divided and directed accordingly.

[0046] In particular, the airflow S is divided and directed by the positioning of the plate P as a further air guide element 7 and a corresponding angle of attack. Various intermediate positions of the further air guide element 7, designed as plate P, are therefore possible, allowing a flow impulse, in particular an airflow velocity, to be individually adjusted for the vehicle user 4 and the vehicle occupants 5.

[0047] Is the further air guide element 7, designed as plate P, as in Fig. 8 shown, positioned, the front partial airflow T va larger air volume than the rear partial airflow T h For example, vehicle user 4 is not very sensitive to drafts when such a setting is used.

[0048] If, on the other hand, the further air guide element 7, designed as plate P, is positioned in the non-functional position, so that plate P is largely in contact with the vehicle roof 6, the rear partial airflow T h Depending on the positioning of the air guide elements 3, a larger air volume than the front partial airflow T v This setting is particularly suitable if the vehicle user (4) is sensitive to drafts.

[0049] An alternative embodiment of the further air guide element 7 is described in the Fig. 10 and Fig. Figure 11 shows the further air guide element 7 being inflatable and having the shape of a circular cylinder in its functional position. The inflatable further air guide element 7 is arranged below the cladding K of the vehicle roof 6 and is therefore largely invisible to an observer.

[0050] In particular, the Fig. 10 the further air guide element 7 in its functional position and in Fig. 11 in the non-functional position.

[0051] In Fig. 10 the further air guide element 7 is completely filled with a fluid, in particular air, and the air guide elements 3 are positioned such that the airflow S is divided by means of the further air guide element 7 so that the front partial airflow T v a larger air volume than the rear partial airflow T h .

[0052] In the non-functional position of the further air guide element 7, i.e. in the emptied state, and with a corresponding positioning of the air guide elements 3, the rear partial airflow T h a larger air volume than the front partial airflow T v .

[0053] Fig. Figure 12 shows an embodiment in which an air deflection element 9 is arranged in the front area of ​​the vehicle 2, in particular in the area of ​​a windshield 10, which in this embodiment is pivotably mounted.

[0054] By means of the air deflection element 9, which according to Fig. Positioned at 12, the front partial airflow T v can be deflected towards the upper body of the vehicle user 4. For example, the air deflection element 9 can be represented by a sun visor assigned to the vehicle user 4.

[0055] In a Fig. In the alternative embodiment shown in Figure 13, the air deflection element 9 is formed by means of a corresponding shaping of the vehicle roof 6, wherein the front partial airflow T v as a result, it is continuously deflected towards the upper body of the vehicle user 4.

[0056] In Fig. 14 The vehicle has 2 glass roof sections G, with a roof cross member 11 serving as an air deflection element 9.

[0057] In the Fig. In the embodiment shown in Figure 15, the vehicle seat 1 of the vehicle user 4 is positioned opposite a direction of travel of the vehicle 2, with the vehicle 2 being moved, for example, in automated driving mode.

[0058] In this case, the airflow S flowing from the air outlet opening L flows towards the air deflection element 9 through appropriate positioning of the air guide elements 3, thereby directing the airflow S towards the further air guide element 7.

[0059] The airflow S flows towards the air guide surface A of the further air guide element 7, so that the airflow S flows in the direction of the upper body of the vehicle user 4.

[0060] In particular, with regard to the ventilation device, it is provided that the air guide elements 3, the further air guide element 7, if provided, the flap element 8 and, if adjustable, the air deflection element 9 are positioned by means of an actuator, for example by means of a stepper motor.

[0061] If the further air guide element 7 is designed to be blown out, filling and emptying are also carried out by an electric motor.

[0062] Fig. Figure 16 shows a block diagram for the operation of the ventilation device, in particular for the actuator setting E of the air guide elements 3, furthermore air guide element 7, the flap element 8 and the air deflection element 9, provided that this is not rigidly designed.

[0063] The setting is based on a position PF of the vehicle seat 1 within the vehicle interior, a recorded seat occupancy SB and a comfort and draft perception Z, in particular of the vehicle user 4, whereby, for example, a corresponding input can be made by the vehicle user 4.

[0064] With regard to position PF of vehicle seat 1, its longitudinal and vertical position is determined.

[0065] The position PF of the vehicle seat 1, the seat occupancy SB and the comfort and draft perception Z form input variables for an algorithm stored in a control unit 12 of the ventilation device, whereby an essentially optimal setting of the air guide elements 3, furthermore air guide element 7, the flap element 8 and the air deflection element 9, provided that this is not rigidly designed, is determined by means of which an essentially optimal setting of the air guide elements 3, the further air guide element 7, the flap element 8 and the air deflection element 9, if this is not rigidly designed.

[0066] In particular, the artificial intelligence algorithm determines the individual draft sensitivity of the vehicle user 4 and / or the vehicle occupant 5, and the setting E is adjusted accordingly in order to achieve largely draft-free ventilation in the vehicle 2.

Claims

[1] Ventilation device for a vehicle (2) with a vehicle seat (1) which has an air outlet opening (L) in the area of ​​a seat back (1.1), where - the air outlet opening (L) is arranged on a top surface (O) of the seat backrest (1.1) such that an airflow (S) flows towards the vehicle roof (6), wherein a number of air guide elements (3) are arranged inside the air outlet opening (L), and wherein - on the vehicle roof (6) in the area of ​​the incident airflow (S) at least one further air guide element (7) is arranged for dividing and directing the airflow (S), wherein the air guide elements (3) arranged in the area of ​​the air outlet opening (L) are for adjusting an air volume of a front partial airflow (T) v ) and rear partial airflow (T h ) are mounted in a pivotable manner, characterized by , that in an upper area of ​​the seat backrest (1.1) a flap element (8) pivotably mounted to enlarge the air outlet opening (L) with a number of air guide elements (3) is arranged. [2] Ventilation device according to claim 1, characterized by , that the further air guide element (7) serves to divide the airflow (S) into a front partial airflow (T) v ) and a rear partial airflow (T h ) is trained. [3] Ventilation device according to one of the preceding claims, characterized by , that the seat back (1.1) has a widening (V) in an area of ​​the upper surface (O) in the direction of a longitudinal axis of the vehicle (x). [4] Ventilation device according to one of the preceding claims, characterized by , that the further air guide element (7) is designed as a plate (P) and is pivotably arranged on the vehicle roof (6) for the purpose of dividing and directing the airflow (S). [5] Ventilation device according to one of the preceding claims, characterized by , that the further air guide element (7) is designed to be inflatable for dividing and directing the airflow (S). [6] Ventilation device according to one of the preceding claims, characterized by , that an air deflection element (9) is arranged in a front area of ​​the vehicle roof (6). [7] Method for operating a ventilation device according to any of the preceding claims, characterized by , that the air guide elements (3) are automatically positioned depending on a position (PF) of the vehicle seat (1) in the vehicle (2), depending on an inclination of the seat back (1.1), depending on a seat occupancy (SB) and / or depending on a comfort and draft perception (Z) of a vehicle user (4) and / or vehicle occupants (5). [8] Method according to claim 7, characterized by, that the pivotally mounted flap element (8), the further air guide element (7) and / or the air deflection element (9) are automatically positioned depending on the position (PF) of the vehicle seat (1) in the vehicle (2), depending on the inclination of the seat back (1.1), depending on the seat occupancy (SB) and / or depending on the comfort and draft perception (Z) of the vehicle user (4) and / or vehicle occupants (5). [9] Vehicle (2) with a ventilation device according to claims 1 to 6.

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