DE102019203680A1 - Ventilation arrangement for a vehicle interior - Google Patents

Abstract

The invention relates to a ventilation arrangement (10) for a vehicle interior (2) with at least one air vent (20) which emits an air flow (LS) directed towards a roof lining (12), the roof lining (12) carrying the air flow (LS) in the direction of the rear area directs. According to the invention, the at least one air outlet (20) has at least two air guiding arrangements (30, 40), a first air guiding arrangement (30) generating a first bundled partial flow (TS1) and a second air directing arrangement (40) generating a second bundled partial flow (TS2), whereby the two partial flows (TS1, TS2) are directed to a common center plane (ME) when they exit the vent (20) and form the air flow (LS) directed to a predetermined area (12.2) of the roof lining (12).

Description

The invention relates to a ventilation arrangement for a vehicle interior according to the preamble of patent claim 1.

Ventilation arrangements for vehicle interiors are known in numerous variations. Here, for example, a front area and / or a rear area of the vehicle interior can be air-conditioned. Air-conditioned air from an air conditioning unit can be routed through ducts to the rear or to the front and from there to the occupants via vents. Alternatively, ventilation arrangements can comprise at least one outlet which emits an air flow directed towards a headliner, the headliner guiding the air flow towards the rear area and cooling or warming the occupants.

From the DE 42 29 596 C2 a generic ventilation arrangement for a vehicle interior is known which comprises an outlet nozzle, the outlet nozzle generating an air flow directed towards the roof lining. This air flow runs freely along the roof lining in some areas. A baffle plate is arranged on the headliner, the angle of inclination of which can be changed in relation to the headliner and which deflects the air flow.

A disadvantage of such ventilation arrangements is the fact that an additional component in the form of the baffle plate is required to create a pleasant room climate for the occupants on the back seat. In addition, the occupants in the front seats and on the back seat may notice an unpleasant draft from the air flow.

The invention is based on the object of providing a ventilation arrangement for a vehicle interior which improves air conditioning of the vehicle interior.

This object is achieved by a ventilation arrangement with the features of claim 1. Advantageous configurations with expedient further developments of the invention are specified in the dependent claims.

In order to provide a ventilation arrangement for a vehicle interior which improves the air conditioning of the vehicle interior, at least one outflow emitting an air flow has at least two air guiding arrangements, a first air guiding arrangement generating a first bundled partial flow and a second air guiding arrangement generating a second bundled partial flow, the two partial flows at Exit from the vent are directed to a common center plane and form an air flow directed to a predetermined area of the headliner.

In the following, an outflow is understood to mean an assembly which is coupled to a fan, the fan generating at least one air flow which emerges from the outflow. The air that is moved by the fan can be cooled or heated by known methods, and moisture can also be extracted from or added to the air in order to improve the climate in the vehicle interior.

Advantageously, the at least two bundled partial flows can be focused in such a way that they are barely or not at all perceived by occupants who are sitting in the front seats. For example, the at least two bundled partial beams can aim in the direction of the center of the vehicle due to the alignment on the common center plane, which can be arranged centrally in the transverse direction of the vehicle, for example, and thereby be guided away from the occupants. As a result, an air flow perceived as disturbing by the occupants in the front seats can advantageously be reduced or completely avoided. Here, the at least two partial flows can be aligned in such a way that they cool or warm the front occupants without them noticing a draft. In addition, the at least two partial flows can simply be brought together to form a common directed air flow, with the point of impact of the common air flow from the at least two air guiding arrangements on the roof lining being able to be set. In this way, a flow onto a front pane can be made more difficult or completely avoided, as a result of which fogging of the front pane and an associated visual obstruction can be made more difficult or completely avoided. Because the air flow generated can be directed over the headliner in the direction of the rear area, it is advantageously possible to dispense with channels which lead the air flow to the rear area. In addition, the vent can be arranged on an upper side of an instrument panel, so that a surface of the instrument panel facing the driver and front passenger can be used for displays and / or other display elements and / or operating elements.

In an advantageous embodiment of the ventilation arrangement according to the invention, the at least two air guiding arrangements can each have an opening, the dimensions of the openings being able to specify the flow rate and / or mass and / or cross section of the corresponding bundled partial flow. Here, a reduction in the cross section of the opening can produce a faster partial flow with a smaller cross section In addition, increasing the cross section can generate a slower partial flow with a larger cross section, whereby the impulse of the corresponding partial flow can be adapted. Here, the dimensions of the openings can be adapted to a vehicle model in order to generate partial flows that are adapted to the vehicle interior of the vehicle model. As a result, the corresponding partial flows can advantageously be easily adapted to the vehicle model by selecting the dimensions of the openings of the at least two air guiding arrangements.

In a further advantageous embodiment of the ventilation arrangement according to the invention, openings of the at least two air guiding arrangements can each be coupled to at least one air duct, with the partial flow supplied via the at least one air duct emerging from the corresponding opening. The at least one air duct can be aligned tangentially to the predetermined outflow direction of the corresponding partial flow. By aligning the at least one air duct, the outflow direction of the at least one partial flow can advantageously be predetermined. For example, by aligning the at least one air duct, the corresponding partial flow can be aligned with the central axis and the at least two partial flows can thereby be combined into a common directed air flow without additional components and with low friction losses of the partial flows.

In a further advantageous embodiment of the ventilation arrangement according to the invention, the at least two air guiding arrangements can each have at least one air guiding element which directs the respective bundled partial flow in a predetermined direction. Here, the at least one air guiding element can direct the corresponding partial flow to the specified area of the headliner. In addition, among other things, an angle at which the combined partial flows impinge on the roof lining can be specified by the air guiding elements of the at least two air guiding arrangements. Here, the air flow formed by the at least two partial flows can advantageously be reliably directed in the direction of the predetermined area of the headliner. By setting the angle of incidence of the air flow on the headliner, it can advantageously be prevented or at least made more difficult that part of the air flow incident on the headliner is deflected in the direction of the windshield.

In a further advantageous embodiment of the ventilation arrangement according to the invention, the at least one air guide element can be designed as a lamella. Lamellae can advantageously be aligned in a simple manner and, through their alignment, simply direct the corresponding partial flow in a desired direction.

In a further advantageous embodiment of the ventilation arrangement according to the invention, the directed air flow can be expanded and slowed down by friction on the roof lining. By widening and slowing down the directed air flow, the resulting air flow is felt more pleasant by occupants in the back seat. As a result, occupants on the back seat can advantageously be flown against gently and without tension or with little tension.

In a further advantageous embodiment of the ventilation arrangement according to the invention, the directed air flow can be widened or slowed down by entrainment and viscous friction in layers of air in the area of the roof lining. In the following, entrainment is understood to mean an entrainment of air from an indoor air surrounding the directed air flow into free shear layers. In addition, the directed air flow creates a friction-based weak air flow in the air layers in the area of the roof lining. As a result, the surrounding indoor air can be moved along and air-conditioned in an advantageous manner. By widening and slowing down the directed air flow, the resulting air flow is felt more pleasant by occupants in the back seat. As a result, occupants on the back seat can advantageously be flown against gently and without tension or with little tension.

In a further advantageous embodiment of the ventilation arrangement according to the invention, the directed air flow can cool or heat the roof lining. The cooled or heated headliner can radiate this cold or heat more advantageously to the vehicle interior and thereby cool or heat the interior air, whereby the climate in the vehicle interior can be further improved.

The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination, but also in other combinations or on their own, without the scope of the Invention to leave. There are thus also embodiments to be regarded as encompassed and disclosed by the invention, which are not explicitly shown or explained in the figures, but emerge from the explained embodiments and can be generated by separate combinations of features.

• 1 eine schematische perspektivische Darstellung eines Ausführungsbeispiels eines Ausströmers einer erfindungsgemäßen Belüftungsanordnung;
• 2 eine schematische perspektivische Darstellung eines Ausschnitts eines Fahrzeuginnenraums mit einem Ausführungsbeispiel einer erfindungsgemäßen Belüftungsanordnung mit einem Ausströmer aus 1; und
• 3 eine schematische Seitenansicht des Fahrzeuginnraums aus 2.

An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. In the drawing, the same reference symbols designate components or elements that perform the same or analogous functions. Here show:

• 1 a schematic perspective illustration of an embodiment of an outflow of a ventilation arrangement according to the invention;
• 2 a schematic perspective illustration of a section of a vehicle interior with an embodiment of a ventilation arrangement according to the invention with an outflow 1 ; and
• 3 a schematic side view of the vehicle interior 2 .

How out 1 to 3 It can be seen has a ventilation arrangement 10 for a vehicle interior 2 at least one air outlet 20th on which one to a headliner 12th directed airflow LS outputs, the headliner 12th the airflow LS heads towards the rear area.

According to the invention, the at least one outflow has 20th at least two air guide arrangements 30th , 40 on, with a first air guide assembly 30th a first bundled partial flow TS1 and a second air duct assembly 40 a second bundled substream TS2 generated, the two substreams TS1 , TS2 when leaving the air outlet 20th on a common middle plane ME are directed and on a given area 12.2 of the headliner 12th directed airflow LS form.

How out 1 to 3 As can also be seen, the illustrated embodiment comprises the ventilation arrangement according to the invention 10 an air outlet 20th . In an alternative exemplary embodiment, not shown, of the ventilation arrangement according to the invention 10 can the ventilation arrangement 10 also more than one air outlet 20th exhibit. The outflow 20th has in the illustrated embodiment of the ventilation arrangement according to the invention 10 two air guiding arrangements 30th , 40 on, which each have a bundled partial flow TS1 , TS2 produce. In an alternative exemplary embodiment, not shown, of the ventilation arrangement according to the invention 10 , the air outlet can 20th also more than two air guiding arrangements 30th , 40 have, creating more than two partial flows TS1 , TS2 can be generated. In the illustrated embodiment of the ventilation arrangement according to the invention 10 is the outflow 20th in the transverse direction of the vehicle y in the center of an upper side of an instrument panel 6th in the front area of the vehicle interior 2 arranged.

How out 1 to 3 It can also be seen that the two air guiding arrangements 30th , 40 one opening each 32 , 42 on, taking dimensions of the opening 32 , 42 Flow velocity, mass and cross-section of the corresponding bundled partial flow TS1 , TS2 pretend. In an alternative embodiment, not shown, the air guiding arrangements 30th , 40 more than one opening at a time 32 , 43 exhibit. In particular, a cross section of the corresponding partial flow can be used here TS1 , TS2 through the cross section of the respective opening 32 , 42 can be specified. A pulse flow of the respective partial flow can be predetermined by the dimensions of the respective opening.

How out 1 can also be seen are the two openings 32 , 42 of the two air guide arrangements 30th , 40 each with at least one air duct 34 , 44 coupled, wherein the via the at least one air duct 34 , 44 supplied partial flow TS1 , TS2 from the corresponding opening 32 , 42 exit. In the illustrated embodiment, an air duct leads 14th an air flow generated by a fan, not shown, to a fork from which the two air ducts 34 , 44 go off. The two air ducts 34, 44 are aligned tangentially to the predetermined outflow direction.

How out 1 to 3 can also be seen, degrees of freedom of movement of the partial flows TS1 , TS2 by aligning the air ducts 34 , 44 and by the alignment of the corresponding openings 32 , 42 given. The two partial flows TS1 , TS2 are made by aligning the openings 32 , 42 and the alignment of the air ducts 34 , 44 in the vehicle vertical direction z and vehicle longitudinal direction x to the headliner 12th and steered in the vehicle transverse direction y to the center of the vehicle. This causes the first partial flow to flow TS1 , which is output to the right of the driver, away from the driver in the direction of the passenger, and the second partial flow TS2 , which is issued to the left of the passenger, flows away from the passenger towards the driver. At the middle plane ME the two partial flows unite TS1 , TS2 to the common directed airflow LS .

How out 1 It can also be seen that the two air guiding arrangements 30th , 40 in the illustrated embodiment, six lamellar air guide elements 36 , 46 on which the respective bundled partial flow oriented towards the center of the vehicle TS1 , TS2 steer in a given direction. In an alternative embodiment not shown, the air guide elements 36 , 46 also have another suitable shape. In addition, the number of air guiding elements can vary and, for example, to the dimensions of the corresponding opening 32 , 42 be adjusted. The air control elements 36 , 46 direct the corresponding Partial flow TS1 , TS2 to the given area 12.2 of the headliner 12th . The given area 12.2 of the headliner 12th is located in the illustrated embodiment of the ventilation arrangement according to the invention 10 in the area of the return leg. Here the direction of flow of the partial flows TS1 , TS2 in the vehicle longitudinal direction x, in the vehicle transverse direction y and in the vehicle vertical direction z from the air guiding elements 36 , 46 given. This creates an angle of incidence with which the directed air flow LS at the given area 12.2 of the headliner 12th hits, through the air control elements 36 , 46 given. This angle of incidence is chosen so that the smallest possible proportion of the air flow LS after hitting the headliner 12th towards the windshield 4th flows.

How out 2 and 3 can be seen further, the directed airflow LS through the vent 20th shaped so that the directed airflow LS after hitting the headliner 12th is widened in the vehicle transverse direction y and in the vehicle vertical direction z. Here is the directed air flow LS due to friction on the headliner 12th expanded and slowed down. Additionally or alternatively, the directed air flow is used LS due to entrainment and viscous friction in layers of air in the area of the roof lining 12th expanded and slowed down. By expanding and decelerating the directed airflow LS The occupants in a back seat enjoy a pleasant on the directed airflow LS based air flow. In 3 a double arrow shows the resulting beam expansion SAW of directed airflow LS in the vertical direction of the vehicle z. The vehicle interior air surrounding the air flow is also conditioned here. Air conditioning is the heating or cooling of air in the vehicle interior 2 Understood. In addition, the air in the vehicle interior 2 Moisture can be added or removed. In addition, the directed air flow cools or heats LS the headliner 12th . The headliner 12th This cold or heat then radiates back to the vehicle interior 2 and thus supports the achievement of a desired temperature inside the vehicle 2 .

List of reference symbols

2

Vehicle interior

4th

Windshield

6th

dashboard

10

Ventilation arrangement

12

Headliner

12.2

specified area

14th

Air duct

20th

Outflow

30, 40

Air guide arrangement

32, 42

opening

34, 44

Air duct

36, 46

Air control element

LS

Airflow

TS1, TS2

Partial flow

ME

Middle plane

SAW

Beam expansion

x

Vehicle longitudinal direction

y

Vehicle transverse direction

z

Vehicle vertical direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 4229596 C2 [0003]

Claims (10)

Ventilation means (10) for a vehicle interior (2) with at least one vent (20) which outputs a directed to a headliner (12) flow of air (LS), wherein the headliner (12) passes the air current (LS) in the direction of the rear region, characterized characterized in that the at least one air outlet (20) has at least two air guiding arrangements (30, 40), a first air guiding arrangement (30) generating a first bundled partial flow (TS1) and a second air guiding arrangement (40) generating a second bundled partial flow (TS2), the two partial flows (TS1, TS2) being directed towards a common center plane (ME) when they exit the vent (20) and form the air flow (LS) directed towards a predetermined area (12.2) of the headliner (12). Ventilation arrangement according to Claim 1 , characterized in that the at least two air guiding arrangements (30, 40) each have an opening (32, 42), the dimensions of the opening (32, 42) flow velocity and / or mass and / or cross section of the corresponding bundled partial flow (TS1, TS2 ). Ventilation arrangement according to Claim 2 , characterized in that the openings (32, 42) of the at least two air guiding arrangements (30, 40) are each coupled to at least one air duct (34, 44), the partial flow (TS1 , TS2) emerges from the corresponding opening (32, 42). Ventilation arrangement according to Claim 3 , characterized in that the at least one air duct (34, 44) is oriented tangentially to the predetermined outflow direction. Ventilation arrangement according to one of the Claims 1 to 4th , characterized in that the at least two air guiding arrangements (30, 40) each have at least one air guiding element (36, 46) which directs the respective bundled partial flow (TS1, TS2) in a predetermined direction. Ventilation arrangement according to Claim 5 , characterized in that the at least one air guide element (36, 46) directs the corresponding partial flow (TS1, TS2) to the predetermined area (12.2) of the headliner (12). Ventilation arrangement according to Claim 5 or 6th , characterized in that the at least one air guide element (36, 46) is designed as a lamella. Ventilation arrangement according to one of the Claims 1 to 7th , characterized in that the directed air flow (LS) can be expanded and braked by friction on the roof lining (12). Ventilation arrangement according to one of the Claims 1 to 8th , characterized in that the directed air flow (LS) can be expanded and decelerated by entrainment and viscous friction in layers of air in the area of the roof lining (12). Ventilation arrangement according to one of the Claims 1 to 9 , characterized in that the directed air flow (LS) cools or heats the headliner (12).

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