DE102017002857A1 - Air conditioning device of a motor vehicle - Google Patents

Abstract

The present development relates to a housing of an air conditioning device of a motor vehicle (1) having at least one housing wall (14) defining a flow channel (15) and having a mounting section (54) for mounting a sound absorption device (30; having on the housing wall (14).

Description

Technical area

The present development relates to an air conditioning device of a motor vehicle, in particular a housing of such an air conditioning device.

background

Automotive air-conditioning devices typically include one or more flow channels by which air supplied via a blower can be controlled to be directed into an interior of a motor vehicle. At the outlet ends of the flow channel typically so-called air vents are arranged, which can be integrated into an interior trim of the motor vehicle and which typically have adjustable flaps and / or fins, by means of which the intensity and the flow direction of air flow of an air flow can be influenced manually.

The air flowing through the flow channel can be accompanied by a certain noise. Furthermore, the cavity of the flow channel may be subject to certain vibration resonances, whereby unwanted noise may occur in the interior of the motor vehicle.

From the DE 10 2011 008 518 A1 a wall is known for an air duct for an air conditioning system for a motor vehicle, wherein a wall portion of the air duct has a recess and an acoustically permeable cover. It can thus reduce noise in the air duct.

The causes of the noise generation are manifold. They may, for example, be conditioned by the intensity of the air flow, by the geometry of the flow channel and / or by the specific configuration of the air conditioning device and vary accordingly.

The provision of a recess and an acoustically permeable cover for this in the region of the air duct is of course associated with increased manufacturing and assembly costs. In order to take account of different acoustic damping requirements, it would be advantageous to provide a plurality of differently configured flow channels with regard to their acoustic properties. However, this would be accompanied by a considerable increase in costs.

By contrast, it is an object of the present further development to provide an acoustically improved housing of an air-conditioning device of a motor vehicle, which is universally adaptable to different acoustic requirements. As a result, assembly and manufacturing costs should be reduced.

Advantageous embodiments

This object is achieved with a housing of an air conditioning device of a motor vehicle according to claim 1, with an air conditioning device according to claim 13 and with a motor vehicle according to claim 14. Formula embodiments are each the subject of dependent claims.

Accordingly, a housing of an air conditioning device of a motor vehicle is provided. The housing has at least one housing wall which delimits a flow channel. The housing can form a flow channel or have a flow channel. The housing, or the housing wall further has a mounting portion for mounting a sound absorption device.

The provision of a mounting portion on the housing wall allows a needs-based arrangement and fixing a tailored to the specific case or on the specific application sound absorption. The mounting portion may be configured on an outer side or on an inner side of the housing wall.

The provision of a mounting section in particular allows the arrangement of different sound absorption devices, each of which is tuned to the particular application or specifically configured for this purpose. In this way, one and the same housing of the air conditioning device can be acoustically provided as needed with at least one of a plurality of sound absorption devices provided.

Furthermore, it is conceivable to provide a universal housing of an air conditioning device of a motor vehicle and to adapt this only in a relatively late phase of the assembly and manufacturing process of the motor vehicle with respect to its acoustic properties by selecting and arranging a specially provided sound absorption device.

In that regard, differently configured sound absorption devices can be provided, which are each connectable to the mounting portion of the housing. The different sound absorption devices can have different sound absorption properties. They can differ in their intensity or frequency behavior with regard to sound or noise absorption. For example, individual sound absorbers may provide relatively broadband attenuation or acoustic absorption while other sound absorbers may provide narrowband acoustic attenuation.

It is also conceivable to equip the housing of the air conditioning device without sound absorption device. This can possibly come into question for particularly low-priced motor vehicles.

According to a development, the mounting portion has at least one fastening element which can be positively, positively or materially connected to a counter-fastening element of the sound absorption device. The fastening element can be integrated in the housing of the air conditioning device. The fastener allows a needs-based installation and attachment of the sound absorption device to the housing wall of the housing.

According to a further embodiment, the fastening element and / or the counter-fastening element have an adhesive surface, a welding surface, a latching element or a fastening opening. For a positive connection of the sound absorption device on the housing of the air conditioning device can be provided with each other corresponding locking elements and counter-locking elements on the housing, respectively at its mounting portion and on the sound absorption device. Also, other connection mechanisms, such as a bayonet lock may be provided.

For a frictional or cohesive connection can be provided on the fastening element, thus at the mounting portion, one or more adhesive surfaces provide that are adhesively or adhesively connectable with the correspondingly designed adhesive surface of the counter-fastening element of the sound absorption device. It is also conceivable to weld the sound absorption device to the housing wall. For this purpose, in particular an ultrasonic welding or laser welding in question. The housing wall and / or the sound absorption device may be made of plastic or formed of corresponding plastic components.

A fastening opening may be provided on one of the fastening element and the counter-fastening element and cooperate with a latching element of the other of the fastening element and counter-fastening element designed to correspond thereto. In this way, a tool-free mounting of the sound absorption device can be provided on the housing. The sound absorption device can be fastened, for example, to the housing of the air-conditioning device by means of a clip connection, which is formed by at least one fastening element and a counter-fastening element.

According to a further embodiment, the mounting portion of the housing has a weakening structure which limits a wall portion of the housing wall. The weakening structure serves for a needs-based formation of a passage opening in the housing wall. The passage opening can lie in particular in the region of the mounting section. In this case, provision is made in particular for initially forming a passage opening in the housing wall of the housing and thereafter mounting the sound absorption device over the passage opening thus formed.

The housing of the air conditioning device may have a completely closed housing wall in an initial state and be provided with a passage opening only in the course of mounting the sound absorption device on the outside of the housing wall by the weakening structure of the housing wall is broken in the region of the mounting portion.

According to a further embodiment, the weakening structure of the housing wall has a perforation or a material weakening, by means of which the wall section can be separated from the housing wall. In this respect, the wall section separated from the housing wall exposes an opening in the housing wall, via which the sound absorption device can be acoustically coupled to the interior of the housing, and thus to the flow channel. In an initial state of the housing, the wall portion may be configured as an integral component of the housing. The housing may in particular be configured as a blow molding or as an injection molded component. A perforation or a material weakening can be realized cost-neutral in the manufacture of the housing.

According to a further embodiment, the mounting portion on a housing wall passing through the passage opening, which is exposed by separating the wall portion. The wall section can be folded down after a severing of the weakening structure and on an adjacent wall section of the housing be arranged or attached. It is advantageous to completely separate the wall section from the housing wall and to separate it from it. A complete separation of the wall section further reduces the weight of the housing of the air conditioning device.

According to a development, the weakening structure has a circumferential and closed geometry. The at least one fastening element for connecting the sound absorption device to the housing is typically located outside the weakening structure. The breaking up of the weakening structure and the separation of the wall section detached in this way from the housing wall has no influence on the function of the fastening element or elements.

According to a further embodiment, a sound absorption device is positively, materially or non-positively attached to the mounting portion. The attachment takes place here via the standing together in operative connection fastening elements and counter-fastening elements of the housing and sound absorption device. The sound absorption device may be permanently connected to the housing. This can be achieved by a corresponding configuration of fasteners and counter-fastening elements operatively connected to one another. For example, the sound absorption device may be glued or welded to the housing wall. In principle, however, it is also conceivable and provided in particular for positive connections, to arrange the sound absorption device detachably on the housing wall of the housing of the air conditioning device.

According to a further embodiment, the sound absorption device has an absorption housing with a housing wall, which protrudes from the outside of the housing wall of the housing of the air conditioning device. To this extent, the absorption housing can provide a cavity widening the interior of the flow channel, which cavity is particularly well suited for sound absorption or acoustic damping.

According to a further embodiment, the absorption housing on a closed housing wall, which are connected via opposite cheek sections with the outside of the housing. The counter-fastening elements of the sound absorption device are typically provided on the ends of the cheek sections facing away from the housing wall. In this way, a particularly good and direct connection of the absorption housing to the housing wall of the housing of the air conditioning device can take place.

According to a further embodiment, a sound absorber is arranged in a cavity formed by the absorption housing. The sound absorber can be a sound-absorbing fleece, a corresponding fabric or a microfibre braid. However, it is also conceivable that the sound absorber is designed, for example, as a chamber resonator or as an acoustic cavity resonator, such as in the manner of a Helmholtz resonator.

According to a further embodiment, an absorber insert is arranged in the passage opening of the housing, which has at least one or more passage openings. The absorber insert can have a required acoustic permeability and selectively couple the sound waves propagating in the flow channel into the absorption housing of the sound absorption device.

According to a further aspect, an air conditioning device for a motor vehicle is also provided which has a previously described housing and at least two sound absorption devices. At least one of the two sound absorption devices can optionally be arranged and fastened on the mounting portion of the housing wall. It can be provided that one of the two sound absorption devices provided is arranged and fastened to the mounting section of the housing wall.

The two sound absorption devices have identical counter-fastening elements, so that they can each be connected to the fastening section provided on the mounting portion of the housing. The sound absorption devices typically have different sound absorption properties. Also, more than two different sound absorption devices can be provided.

The air-conditioning device has a type of modular system with a housing having a flow channel and with a plurality of differently configured sound absorption devices. Depending on the vehicle configuration or depending on the configuration of the air conditioning device optionally one of the sound absorption devices can be arranged on the provided mounting portion of the housing wall of the housing. In this respect, different acoustic damping requirements can be met as required by arranging different sound absorption devices on the housing which are optimized for the respective intended use.

Also, one and the same housing of an air conditioning device can be customized as needed by suitable selection and arrangement of a sound absorption device designed for a specific application.

The housing of the air conditioning device may further comprise a plurality of mounting portions, which are configured remote from each other on the housing. At least one of the mounting sections may be provided with a sound absorption device while the other mounting section remains free of a sound absorption device. It is also conceivable to provide each mounting portions of the housing each with its own sound absorption device. The individual sound absorption devices can be configured differently and adapted to different acoustic requirements.

According to a further aspect, finally, a motor vehicle is provided, which has a previously described air conditioning device or which has an air conditioning device with at least one previously described housing. Such a motor vehicle can be manufactured and assembled particularly cost-effectively. In a comparatively late phase of the assembly process, the casing of the air-conditioning device can be acoustically optimized by suitably selecting a sound absorption device tailored to the respective requirements and arranging it on the housing wall.

list of figures

• 1 eine schematische Seitenansicht eines Kraftfahrzeugs,
• 2 eine beispielhafte perspektivische Darstellung eines Gehäuses einer Klimatisierungseinrichtung,
• 3 eine Draufsicht auf einen Abschnitt des Gehäuses gemäß 2,
• 4 eine Querschnitt B-B gemäß 3,
• 5 einen Querschnitt A-A gemäß 4,
• 6 eine Draufsicht auf einen Einsatz, welcher in einer Durchgangsöffnung der Gehäusewandung angeordnet ist,
• 7 einen Querschnitt gemäß 5 jedoch für eine weitere Ausführungsform der Schallabsorptionseinrichtung,
• 8 einen Querschnitt durch eine nach Art eines Helmholtz-Resonators 100 ausgestaltete Schallabsorptionseinrichtung,
• 9 eine Draufsicht auf die Schallabsorptionseinrichtung gemäß 8 von der Innenseite des Gehäuses aus betrachtet,
• 10 einen Querschnitt durch eine weitere Ausführungsform der Schallabsorptionseinrichtung,
• 11 eine Draufsicht auf die Schallabsorptionseinrichtung gemäß 10 vom Inneren des Gehäuses aus betrachtet,
• 12 einen Querschnitt durch eine weitere Ausführungsform einer Schallabsorptionseinrichtung,
• 13 eine Draufsicht auf die Schallabsorptionseinrichtungen gemäß 12 vom Gehäuseinneren aus betrachtet,
• 14 eine weitere Ausführungsform einer Schallabsorptionseinrichtungen,
• 15 eine weitere Ausführungsform eine Schallabsorptionseinrichtung,
• 16 eine weitere Ausführungsform einer Schallabsorptionseinrichtung,
• 17 eine perspektivische Darstellung einer formschlüssigen Verbindung einer Schallabsorptionseinrichtung an der Außenseite der Gehäusewandung,
• 18 einen Querschnitt C-C gemäß 17,
• 19 einen Querschnitt durch eine weitere Verbindung von Schallabsorptionseinrichtungen und Gehäusewandung,
• 20 einen Querschnitt durch eine weitere Verbindung von Schallabsorptionseinrichtungen und Gehäusewandung,
• 21 einen Querschnitt durch eine formschlüssige Verbindung von Schallabsorptionseinrichtungen und Gehäusewandung und
• 22 eine Draufsicht auf einen Montageabschnitt der Gehäusewandung vor Montage einer Schallabsorptionseinrichtung.

Other objects, features and advantageous applications are described in the following embodiment with reference to the drawings. Hereby show:

• 1 a schematic side view of a motor vehicle,
• 2 an exemplary perspective view of a housing of an air conditioning device,
• 3 a plan view of a portion of the housing according to 2 .
• 4 a cross section BB according to 3 .
• 5 a cross section AA according to 4 .
• 6 a top view of an insert, which is arranged in a passage opening of the housing wall,
• 7 a cross section according to 5 however, for another embodiment of the sound absorption device,
• 8th FIG. 2 shows a cross section through a sound absorption device configured in the manner of a Helmholtz resonator 100, FIG.
• 9 a plan view of the sound absorption device according to 8th viewed from the inside of the housing,
• 10 a cross section through a further embodiment of the sound absorption device,
• 11 a plan view of the sound absorption device according to 10 from inside the case,
• 12 a cross section through a further embodiment of a sound absorption device,
• 13 a plan view of the sound absorption devices according to 12 viewed from the inside of the housing,
• 14 a further embodiment of a sound absorption device,
• 15 a further embodiment of a sound absorption device,
• 16 a further embodiment of a sound absorption device,
• 17 a perspective view of a positive connection of a sound absorption device on the outside of the housing,
• 18 a cross section CC according to 17 .
• 19 a cross section through a further connection of sound absorption devices and housing,
• 20 a cross section through a further connection of sound absorption devices and housing,
• 21 a cross section through a positive connection of sound absorption devices and housing wall and
• 22 a plan view of a mounting portion of the housing wall before mounting a sound absorption device.

Detailed description

This in 1 shown in side view motor vehicle 1 has a motor vehicle body 2 with an interior acting as a passenger compartment 3 on. The car 1 is designed for example as a passenger car. For ventilation and air conditioning of the interior 3 has the motor vehicle 1 an air conditioning device 11, which in 2 is shown only in part. The air conditioning device 11 typically includes fan 12 on which air-carrying with the air-conducting housing 10 the air conditioning device 11 is coupled. The housing 10 has a branching flow structure with multiple flow channels 15 each bounded by a correspondingly configured housing wall perpendicular to the flow direction.

The housing 10 has several outlet openings 16 on, at which in the final assembly state in each case at least one air vent 18 is arranged. The one or more air vents 18 are typically integrated into the interior trim of the motor vehicle 1. They allow for an appropriate alignment and regulation of the fan 12 and the case 10 flowing airflow. The housing 10 can be configured in particular as a so-called air distributor. It may have a distributor body made of plastic. The housing 10 can be configured for example as a blow molding or as an injection molded component.

As in particular in 4 shown has the housing 10 a housing wall bounding the flow channel 15 14 on. The housing wall 14 is here with a mounting section 54 provided on which a sound absorption device 30 can be arranged or fastened. The 22 shows in plan view the mounting portion 54 of the housing 10 before mounting the sound absorbing devices 30. The mounting section 54 has in the embodiment shown there two fastening elements 22 on. These are outside a weakening structure 52 of the mounting section 54 , The weakening structure 52 may be, for example, as a perforation 56 or as a material weakening 58 in the housing wall 14 be designed.

The weakening structure 52 can be configured as a circumferential weakening structure. In the present embodiment, it has a rectangular shape. It can also be rhomboid, triangular, polygonal, round or oval.

As part of a final assembly process or in the course of a needs-based configuration and customization of the housing 10 For example, the housing wall 14 may be along the weakening structure 52 broken or split and one of the weakening structure 52 Edged wall portion 50 may from the housing wall 14 separated and separated from it. In this way, a through hole 20 , as in 4 shown, exposed. On the outside 51 the housing wall 14 can then a sound absorption device 30 be attached.

The sound absorption device 30 has an absorption housing 31 with a housing wall 32 and with mutually opposite cheek sections 33. The housing wall 32 may be configured as a rear wall, which is substantially parallel to the outside 51 the housing wall 14 extends. The housing wall 32 Of course, it can also extend obliquely or inclined to the housing wall 14 and thus form an absorption housing, which deviates from a cubic shape. About itself from the housing wall 32 away extending cheek sections 33 is the absorption housing 31 and thus the entire sound absorption device 30 on the outside 51 the housing wall 14 fastened.

About the passage opening 20 obtained by separating the wall portion 50 from the housing wall 14 is exposed, the sound absorption device 30 is acoustically with the flow channel 15 coupled. The interior of the absorption housing 31 can be hollow. Such a cavity 34 but also, as in 7 shown to be filled with a sound absorber 44. As a sound absorber 44 For example, a fleece, a fabric or a foam is possible.

The passage opening 20 can with an absorber insert 40 be provided. The use 40 can the passage opening 20 completely close and an acoustic coupling between the interior, or cavity 34 the sound absorption devices 30 and the flow channel 15 form. The absorber insert 40 may, for example, a plurality of through holes 42 over which the cavity 34 the sound absorption devices 30 with the flow channel 15 is in flow communication. Due to the size of the passage openings 42 and by the number and the specific geometric arrangement of the passage openings 42 can the acoustic coupling between the sound absorption 30 and the flow channel 15 be varied as needed.

In particular, it may be provided to provide a plurality of different absorber inserts 40, which fundamentally differ with regard to their geometric design and with regard to their acoustic coupling properties.

By selecting a suitable absorber insert 40 can the properties of the sound absorption devices 30 be specifically influenced. It is particularly conceivable, at different and spaced apart locations of the housing 10 one or more sound absorption devices 30 provided. The sound absorption devices can be fundamental here differ from each other. At different points of the housing, different acoustic or noise-damping measures can be provided in this way.

The absorber insert 40 can also be made of a fleece, a fabric or a foam. It can be made of the same material as the sound absorber 44. But he can also get one from the sound absorber 44 have different material. The absorber insert 40 may also be provided with a membrane which the through holes 42 covered, but which has a required acoustic permeability.

As further in 4 can be shown on the housing wall 14 a plurality of sound absorption devices 30 may be arranged. These can be on opposite sections of the housing 14 arranged and / or be arranged relative to the longitudinal extent of the housing offset from one another on the housing wall.

In the embodiment according to the 8th and 9 the sound absorption device 130 is designed in the form of a Helmholtz resonator. The sound absorption devices 130 has in one direction an approximately circular or oval absorption housing 131 on. The absorption housing 131 has a cavity 134 with an inner diameter D which is larger than the inner diameter d of a through hole 142 passing through the absorber insert 140 extends. The absorber insert 140 can in this case in one piece with the housing wall 132 the sound absorption devices 130 be connected. The passage opening 142 may be formed centrally in the absorber insert 140.

As shown 9 can the passage opening 142 have a circular or oval geometry. The housing wall 132 For example, it may be dome-shaped and, accordingly, spherical. But it can also have a cylindrical shape, as shown in the illustration 8th evident.

The design of a Helmholtz resonator is characterized by a particularly good and narrow-band acoustic absorption behavior.

The further embodiment according to the 11 and 12 are characterized by the fact that the absorption housing 31 the sound absorption devices 30 two separate cavities 34a, 34b, which are separated by a separating web 35 from each other and hermetically separated from each other. The in the housing wall 14 provided passage opening 20 is provided with an absorber insert 240, which is also divided into two parts. A first section of the absorber insert 240 has several passage openings 242 on, which run parallel to each other and which all open into the cavity 34 a. An adjacent thereto arranged portion of the absorber insert 240 has only a central and circular passage opening 241 on which in the cavity 34b empties.

The cavity 34a may optionally be provided with a sound absorber 44 filled out. In this area, the sound absorption device 30 provide broadband sound absorption. In the neighboring area 34b For example, the sound absorption device 30 can provide a particularly narrow-band sound absorption. In this way, the advantages of a broadband and a narrowband sound absorption can be combined.

In the further embodiment of a sound absorption device 230 according to the 13 and 14 is provided that the absorption housing 231 also a closed and far reaching newly designed housing wall 232 having. From the housing wall 232 However, several extend in a cross shape or in a diamond shape parallel to each other extending webs 233 . 234 , As in the plan view according to 13 shown extending a plurality of parallel webs 233 approximately perpendicular to also parallel or extending webs 234. The webs 234 and the footbridges 233 can form a lattice structure.

The webs 233,234 are perpendicular to the plane of the housing wall 232 a substantially identical extension. The flat housing wall 232 can be on the outside 51 the housing wall 14 abut, so that the webs 233 . 234 in the passage opening 20 the housing wall 14 protrude. The webs 233, 234 can extend perpendicular to the housing wall 232 have, which is approximately the wall thickness of the housing 14 equivalent. The free ends of the bars 233 . 234 come to rest so far on the inside of the housing wall 14 flush.

The free ends of the webs 233, 234 may be of a membrane 236 be coated, which has a required acoustic permeability and in this respect an acoustic coupling between the spaces between the webs 233, 234 and the flow channel 15 form.

According to the embodiment according to 14 The sound absorption devices 330 have an absorption housing 331 which also has lateral cheek sections 333 on the outside 51 of the housing 10 is attached. The back housing wall 332 However, does not have a planar shape, but at least a partially jagged course. As in 14 the absorption housing can be shown 331 two approximately triangular-looking and in the passage opening 20 protruding tips 335 . 337 exhibit.

Between the tips 335 . 337 can be an outward, from the outside 51 of the housing 10 protruding tip 336 be provided. The tips 335 . 336 . 337 can have sloping flanks 338 be connected to each other. In cross-section according to 14 If so, a zigzag or triangular geometry is provided which can provide a required sound reflection.

In the further embodiment of a sound absorption devices 430 according to 15 is also an absorption housing 431 provided with lateral cheek sections 433. A back housing wall 432 However, this is designed curved or arched. It has an inwardly, in the passage opening 20 projecting curvature 435 on. From the flow channel 15 From the point of view, the curvature points 435 a convex curvature on. The cavity 434 is accordingly reduced in size and compared to the embodiment of 4 changed acoustically. This provides a required sound reflection.

In the embodiment according to 16 , which far reaching the embodiment according to the 4 is similar, it is provided that the sound absorption means 30 with its absorption housing 31 on the outside 51 of the housing wall 14 is arranged. The lateral cheek portions 33 in this case form a connection between the far reaching and configured from the outside 51 protruding housing wall 32 and the housing wall 14 , The cavity 34 the sound absorption device 30 is complete with a sound absorber 44 filled. The sound absorber 44 also protrudes into the passage opening 20 in and comes approximately flush with an inside of Wandungsabschnitts 14 to lie.

In the 18 - 22 are various connection mechanisms for the attachment and connection of the sound absorption devices 30 on the outside 51 of the housing 10 shown. In the illustration according to the 18 are on the outside 51 the housing wall 14 several configured in the form of locking elements fasteners 22 intended. The fasteners 22 protrude from the outside 51 the housing wall 14. Im in the 18 and 19 embodiment shown has the sound absorption devices 30 on their opposite cheek sections 33 each outwardly projecting counter-fastening elements 36.

As in the cross section according to 18 It can be seen that on each side of the sound absorption devices 30 there are two fastening elements 22 arranged approximately symmetrically to each other at a predetermined distance. These can be configured as locking lugs. They have at one of the housing facing away from the free end portion in each case an insertion bevel 24 on. The designed in the manner of an extension counter-fastening elements 36 of the sound absorption devices 30 can from above with the facing chamfers 24 cooperate and effect a lateral, away from each other directed temporary pivoting of the fasteners 22 when exercising a corresponding downward mounting force.

Once the counter-fastening elements 36 have passed a material thickening of the fasteners in the mounting direction, they can return under the action of an elastic restoring force in the shown in Fig. 17 and 18 initial position. The mutual engagement of the fastening elements 22 with the counter-fastening elements 36 provides a durable and positive and releasable connection of the sound absorption devices 30 on the housing 10 ,

In 19 is shown by way of example that the sound absorption means 30 also by means of an adhesive surface 60 on the outside 51 of the housing wall 14 can be attached. The corresponding splices or adhesive surface 60 are in 19 characterized. The adhesive bond formed in this way 28 can of mutually corresponding connection surfaces 25 on the cheek sections 33 and at the corresponding areas on the outside 51 the housing wall 14 are provided. The adhesive surface 60 is here in the range or overlapping to the mounting section 54 on the outside 51 the housing wall 14th

In the embodiment according to 20 can be provided on the housing 10 , especially on the mounting section 54 the housing wall 14 an outwardly projecting fastener 19 to provide approximately in the form of a pin. Corresponding to this, the housing 31 the sound absorption device 30 an outwardly projecting flange 37 in which a counter-fastening element 38, for example in the form of a recess or a corresponding passage opening for receiving the fastening element 19 is provided.

The absorption housing 31 can in this case with its designed as a passage opening counter-fastening element 38 on that as Mounting extension designed fastener 19 be plugged. The connector may be configured a frictional connection. However, it can also be reinforced by means of a subsequent welding operation, for example by means of ultrasonic welding. If necessary, it is conceivable, as in 21 shown the fastener 19 with a radially widened head 17 to provide, whereby a positive fastening of the sound absorbing means 30 to the housing 10 the air conditioning device 11 can be provided.

The head 17 may have a required elasticity, so that it passes through the through opening of the counter-fastening element 38 can be passed. But it can also be provided, the head 17 only later, for example by gluing or welding after installation of the sound absorption devices 30 on the housing 10 at the free end of the fastener 19 to fix.

The illustrated embodiments merely show possible embodiments of the invention to which further numerous variants are conceivable and within the scope of the invention. The exemplary embodiments shown are in no way to be construed as limiting the scope, applicability or configuration possibilities of the invention. The present description merely shows the person skilled in the art a possible implementation of an exemplary embodiment according to the invention. Thus, the most varied modifications can be made to the function and arrangement of elements described without departing from the scope of protection or its equivalents as defined by the following claims.

LIST OF REFERENCE NUMBERS

1

motor vehicle

2

Automotive body

3

inner space

10

casing

11

air conditioning unit

12

fan

14

housing

15

flow channel

16

outlet

17

head

18

air vents

19

fastener

20

Through opening

22

fastener

24

chamfer

25

interface

28

adhesive bond

30

Sound absorption devices

31

absorbing housing

32

housing wall

33

cheeks sections

34

cavity

34 a

cavity

34b

cavity

35

divider

36

Against fastener

37

flange

38

Against fastener

40

absorbers use

42

Through opening

44

sound absorber

50

wall section

51

outside

52

weakening structure

54

mounting portion

56

perforation

58

material weakening

60

adhesive surface

130

Sound absorption devices

131

absorbing housing

132

housing wall

134

cavity

140

absorbers use

142

Through opening

230

Sound absorption devices

231

absorbing housing

232

housing

233

web

234

web

236

membrane

240

absorbers use

241

Through opening

242

Through opening

330

Sound absorber

331

absorbing housing

332

housing

333

Wangen section

335

top

336

top

337

top

338

flank

430

Sound absorption devices

431

absorbing housing

432

housing

433

Wangen section

434

cavity

435

bulge

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102011008518 A1 [0004]

Claims (14)

Housing of an air-conditioning device of a motor vehicle (1) with at least one housing wall (14) which delimits a flow channel (15) and which has a mounting section (54) for fastening a sound absorption device (30; 130; 230; 330; 430) to the housing wall (14 ) having. Housing after Claim 1 in that the mounting portion (54) has at least one fastening element (19, 22) which can be positively, positively or materially connected to a counter-fastening element (36, 38) of the sound absorption device (30, 130, 230, 330, 430). Housing after Claim 2 wherein the fastening element (19, 22) and / or the counter-fastening element (36, 38) has an adhesive surface, a welding surface, a latching element or a fastening opening. Housing according to one of the preceding claims, wherein the mounting portion (54) has a weakening structure (52) which defines a wall portion (50) of the housing wall (14). Housing after Claim 4 wherein the weakening structure (52) has a perforation (56) or a material weakening (58) by means of which the wall section (50) can be separated from the housing wall (14). Housing according to one of the preceding claims, wherein the mounting portion (54) has a housing wall (14) passing through opening (20) which is exposed by separating the wall portion (50). Housing according to one of the preceding Claims 2 to 6 wherein the weakening structure (52) has a circumferential and closed geometry and wherein the at least one fastening element (19, 22) is arranged outside the weakening structure (52). Housing according to one of the preceding claims, wherein on the mounting portion (54) a sound absorption device (30; 130; 230; 330; 430) is fixed in a form-fitting, cohesive or non-positive manner. A housing according to any one of the preceding claims, wherein the sound absorbing means (30; 130; 230; 330; 430) comprises an absorption housing (31; 131; 231; 331; 431) having a housing wall (32; 132; 232; 332; 432), which protrudes from an outer side (51) of the wall (14). Housing after Claim 9 wherein the absorption housing (31; 131; 231; 331; 431) has a closed housing wall (32; 232; 332; 432) connected to the outside (51) of the housing wall via opposite cheek sections (33; 233; 333; 433) (14) is connected. Housing after Claim 9 or 10 in which a sound absorber (44) is arranged in a cavity (34; 134; 434) formed by the absorption housing (31; 131; 231; 331; 431). Housing according to one of the preceding Claims 6 to 10 , wherein in the passage opening (20) of the housing wall (14) an absorber insert (40; 140; 240) is arranged which has at least one or more passage openings (42; 142; 241, 242). An air conditioning device comprising a housing (10) according to any preceding claim and having at least two sound absorbing means (30; 130; 230; 330; 430) at least one of which is selectively mountable and securable to the mounting portion (54) of the housing wall (14). Motor vehicle with an air conditioning device (11) according to Claim 13 or with an air conditioning device (11), which at least one housing (10) according to one of the preceding Claims 1 to 12 or has.

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