Ventilation device for a vehicle

Abstract

Ventilation housing (10, 20) for a vehicle, wherein the ventilation housing (10, 20) comprises a frame (4) into which a fabric package (1) is introduced, wherein the fabric package (1) comprises at least one drainage layer (2) surrounded by fine-pored fabric layers (5, 7) for removing moisture and for ventilating an interior of the vehicle.

Description

[0001] The present invention relates to a ventilation housing for a vehicle and a method for ventilating a vehicle.

[0002] To vent a vehicle, ventilation devices are traditionally used which open under air pressure applied in a predetermined direction and only partially prevent dust and moisture from entering the vehicle.

[0003] The German publication DE 35 03 600 A1 discloses a ventilation housing for a vehicle, wherein the ventilation housing comprises a membrane flap which opens when there is an internal pressure inside the vehicle and a negative pressure on an outside of the vehicle and closes when the pressure conditions are reversed.

[0004] A ventilation device for a box body of a motor vehicle delimited by walls is known from document DE 10 2006 053 334 A1. An air duct is inserted into one of the walls, which has an outer opening communicating with the surroundings of the box body and an inner opening communicating with the box body.

[0005] The document DE 10 2012 020 683 A1 describes an arrangement for preventing noise emissions into the interior of a vehicle with a flat, sound-absorbing means in the area of a body opening for forced ventilation of the interior.

[0006] Against this background, it is an object of the present invention to provide a device for forced ventilation of a vehicle which reliably prevents the penetration of dirt or moisture into the vehicle.

[0007] A ventilation housing for a vehicle is thus presented, wherein the ventilation housing comprises a frame into which a fabric package is introduced, wherein the fabric package comprises at least one drainage layer surrounded by fine-pored fabric layers for removing moisture and for ventilating an interior of the vehicle.

[0008] Embodiments result from the description and the dependent claims.

[0009] The proposed ventilation housing comprises a frame into which a fabric package made of various material layers is inserted, through which air flowing from a respective vehicle is guided. In particular, the fabric package comprises at least one drainage layer for draining liquid. Furthermore, the fabric package comprises fine-pored fabric layers that prevent dust from a respective surrounding area of the vehicle from penetrating the interior of the vehicle.

[0010] In the context of the present invention, a drainage layer is understood to mean a layer made of, for example, a fabric, such as a coated textile or a plastic, which is suitable for draining away moisture, so that liquid accumulating on the drainage layer, such as splash water or water vapor, moves through the drainage layer and leaves the drainage layer at a predetermined point and is drained away into a respective environment, for example via drainage holes in a frame surrounding the drainage layer.

[0011] It is also conceivable that the drainage layer includes a temperature sink where liquid or water vapor collects.

[0012] In the context of the present invention, a fine-pored fabric is understood to mean a fabric with a pore size that is particularly impermeable to dust and yet permeable to air, ie gases contained in a vehicle interior.

[0013] In a possible embodiment of the ventilation housing presented, it is provided that the frame has drainage holes through which moisture accumulating in the ventilation housing is to be led out of the ventilation housing into a respective environment of the vehicle.

[0014] Drainage holes ensure continuous drainage of moisture from the proposed ventilation housing. To this end, the drainage holes connect, in particular, the drainage layer provided according to the invention with the respective surroundings of the vehicle to be ventilated.

[0015] In a possible embodiment of the proposed ventilation housing, it is provided that the moisture accumulating in the drainage layer is to be directed into the drainage holes of the frame.

[0016] By means of, for example, a channel system within the drainage layer, an accumulated amount of liquid can be directed from any location within the drainage layer to a desired exit point from the drainage layer or the proposed venting housing, thereby preventing moisture from being transported through further layers of the proposed venting housing, in particular the fine-pored fabric layers. For this purpose, it is particularly provided that corresponding channels are designed to be watertight, for example by coating the fabric along the channels with plastic, so that the transfer of moisture through the drainage layer into a material surrounding the drainage layer, in particular the fine-pored fabric layers, is prevented. By using the drainage layer provided according to the invention, it is possible to prevent moisture-related damage to the fine-pored fabric layers provided according to the invention.

[0017] The drainage layer provided according to the invention can be used both to prevent the transfer of moisture into the fine-pored fabric layers and for dehumidification, i.e. to remove or suck out moisture from the fine-pored fabric layers.

[0018] Furthermore, it is conceivable that the channels of the drainage layer have porous side walls, which provide a large surface area, so that liquid circulating in the channels can be distributed in the side walls, evaporated and expelled through the vent housing.

[0019] In a further possible embodiment of the ventilation housing presented, the fine-pored fabric layers are made of a textile fabric.

[0020] Textiles, such as tiles, which have particularly small pores and are therefore impervious to potentially penetrating dust, are particularly suitable as fine-pored fabric layers, although any other fine-pored and technically suitable fabric for filtering air is also conceivable.

[0021] In a further possible embodiment of the ventilation housing presented, the frame is provided to be a self-sealing frame.

[0022] By using a self-sealing frame, which in particular consists of a flexible material such as rubber and comprises a receptacle for connection to a respective installation location, the ventilation housing presented can be arranged quickly and efficiently on a respective vehicle, i.e. inserted into a respective ventilation opening, whereby complex sealing work and testing steps are eliminated.

[0023] Another advantage of a self-sealing frame is that it dynamically adapts to changes in its installation location. This means that, for example, when cornering, during which the chassis of a particular vehicle twists and a particular vent opening of the vehicle is compressed or stretched, the self-sealing frame adapts to the compression or stretching movement of the vent opening and ensures the continuous tightness of the corresponding vent housing.

[0024] In particular, it is intended to select a material for sealing the self-sealing frame with a temperature and / or expansion coefficient corresponding to a particular installation location in order to enable simultaneous movement of the installation location and the self-sealing frame, for example when the vehicle or the frame heats up or cools down.

[0025] In a further possible embodiment of the ventilation housing presented, it is provided that the ventilation housing is shaped in such a way that on a side of the ventilation housing facing a respective environment of the vehicle, a lower air pressure is created compared to an interior of the vehicle, so that air flows from the interior of the vehicle through the ventilation housing into the respective environment of the vehicle.

[0026] To create a negative pressure on the outside of the vent housing, the proposed vent housing can be at least partially curved, so that air flowing through the vent housing, for example, during a journey, is guided along the vent housing in such a way that a negative pressure is created relative to an inside of the vent housing and air is drawn from the inside of the vent housing to its outside, thereby venting the respective vehicle. Accordingly, the proposed vent housing enables completely passive venting of the vehicle.

[0027] Furthermore, the present invention relates to a method for ventilating a vehicle, in which at least one ventilation housing is introduced into the vehicle, wherein the at least one ventilation housing comprises a frame into which at least one drainage layer surrounded by fine-pored fabric layers is introduced, and wherein the at least one ventilation housing is introduced into the vehicle in such a way that air located in the vehicle is at least partially guided through the at least one ventilation housing into a respective environment of the vehicle.

[0028] The present method serves in particular to provide the presented ventilation housing on a vehicle.

[0029] In a possible embodiment of the method presented, it is provided that the air in the vehicle is forced out of the vehicle via a pressure difference between the respective surroundings of the vehicle and an interior of the vehicle that arises at the at least one ventilation housing.

[0030] Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

[0031] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

[0032] The invention is illustrated schematically in the drawings using embodiments and is described schematically and in detail with reference to the drawings. Fig. 1 shows a possible design of the presented ventilation housing. Fig. 2 shows another possible design of the presented ventilation housing.

[0033] In Fig. 1 shows a ventilation housing 10 into which a fabric package 1 is inserted. The ventilation housing 10 is arranged, for example, on a fender of a vehicle, so that air flowing out of an interior of the vehicle is discharged through the fabric package 1 and accordingly through the ventilation housing 10 into a respective environment of the vehicle. In order to drain any moisture introduced into the fabric package 1 with the air flowing through the fabric package 1, i.e., for example, splash water from the respective environment of the vehicle, from the fabric package 1 or the ventilation housing 10 and accordingly from the vehicle to the respective environment, the fabric package 1 comprises a drainage layer 2 in which the moisture collects and through which the moisture is guided to a predetermined outlet point in order to be discharged into the respective environment of the vehicle.In order to release the moisture to the respective surroundings of the vehicle, a downward-facing side wall of a frame 4 of the ventilation housing 10 has drainage holes which, for example, connect the drainage layer 2 with the respective surroundings of the vehicle.

[0034] In order to further protect the interior of the vehicle against the passage of dust particles from the respective surroundings of the vehicle through the ventilation housing 10, the fabric package 1 comprises, in addition to the drainage layer 2, dust-tight textile layers 5 and 7, which are so dense that the dust particles from the respective surroundings of the vehicle cannot pass through the textile layer 5, 7, i.e. cannot pass through the respective textile layer 5, 7 into the interior of the vehicle, wherein the textile layers 5, 7 can, however, be designed, for example using a semi-permeable membrane, in such a way that dust particles can migrate from the interior of the vehicle into the respective surroundings of the vehicle, but cannot migrate back into the interior of the vehicle.

[0035] The ventilation housing further comprises the frame 4, which is designed to be self-sealing and fits dust-tight against an installation opening in the vehicle. The frame 4 has a surface area of approximately 10 mm 2 , wherein struts, e.g. cross struts, are provided on a side facing the interior of the vehicle for fixing the fabric package 1 and for stabilizing the ventilation housing.

[0036] In Fig.2 shows a ventilation housing 20 that is shaped to provide purely passive interior ventilation, i.e., ventilation without movement of components of the ventilation housing 20. Due to the purely passive or motionless ventilation, a negative pressure in the interior of the vehicle caused by the movement of, for example, slats, as is provided for, for example, in the prior art, can be avoided. Accordingly, noise pollution penetrating the interior of the vehicle through the ventilation housing 20 is also reduced, since sound waves, caused, for example, by an uneven road surface, do not directly pass into the interior of the vehicle.

[0037] In order to enable replacement of the fabric package 1, the fabric package 1 is arranged reversibly on the frame 4 of the ventilation housing 20 by means of retaining clips 23.

Claims

[1] Ventilation housing (10, 20) for a vehicle, wherein the ventilation housing (10, 20) comprises a frame (4) into which a fabric package (1) is introduced, wherein the fabric package (1) comprises at least one drainage layer (2) surrounded by fine-pored fabric layers (5, 7) for removing moisture and for ventilating an interior of the vehicle. [2] Ventilation housing (10, 20) according to claim 1, wherein the frame (4) has drainage holes through which moisture accumulating in the ventilation housing (10, 20) is to be led out of the ventilation housing (10, 20) into a respective environment of the vehicle. [3] Ventilation housing (10, 20) according to claim 2, wherein the drainage layer (2) is shaped such that the moisture accumulating in the drainage layer (2) is to be guided into the drainage holes of the frame (4). [4] Ventilation housing (10, 20) according to one of the preceding claims, wherein the fine-pored fabric layers (5, 7) consist of a textile fabric. [5] Ventilation housing (10, 20) according to one of the preceding claims, wherein the frame (4) is a self-sealing frame. [6] Ventilation housing (10, 20) according to one of the preceding claims, wherein the ventilation housing (10, 20) is shaped such that on a side of the ventilation housing (10, 20) facing a respective surroundings of the vehicle, an air pressure is created which is lower than that of an interior of the vehicle, so that air flows from the interior of the vehicle through the ventilation housing (10, 20) into the respective surroundings of the vehicle. [7] Ventilation housing (10, 20) according to one of the preceding claims, wherein the ventilation housing (10, 20) is arranged at a ventilation opening of the vehicle. [8] Ventilation housing (10, 20) according to one of the preceding claims, wherein the fine-pored fabric layers (5, 7) are impermeable to dust. [9] Ventilation housing (10, 20) according to one of the preceding claims, wherein the drainage layer (2) comprises a channel system for discharging liquid from the ventilation housing (10, 20). [10] Method for ventilating a vehicle, in which at least one ventilation housing (10, 20) is introduced into the vehicle, wherein the at least one ventilation housing (10, 20) comprises a frame (4) into which at least one drainage layer (2) surrounded by fine-pored fabric layers (5, 7) is introduced, and wherein the at least one ventilation housing (10, 20) is introduced into the vehicle in such a way that air located in the vehicle is at least partially guided through the at least one ventilation housing (10, 20) into a respective environment of the vehicle. [11] Method according to claim 10, wherein the at least one ventilation housing (10, 20) is arranged on the vehicle in such a way that the air in the vehicle is forced out of the vehicle via a pressure difference between the respective surroundings of the vehicle and an interior of the vehicle, which pressure difference arises at the at least one ventilation housing (10, 20).

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