US20060211355A1 - Two-section air duct - Google Patents

Two-section air duct Download PDF

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Publication number
US20060211355A1
US20060211355A1 US10548756 US54875604A US2006211355A1 US 20060211355 A1 US20060211355 A1 US 20060211355A1 US 10548756 US10548756 US 10548756 US 54875604 A US54875604 A US 54875604A US 2006211355 A1 US2006211355 A1 US 2006211355A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
duct
wall
section
air
acoustically
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10548756
Inventor
Hans Kutter-Schrader
Rolf Pelzer
Wolfgang Riedisser
Alexander Storz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler AG
Original Assignee
Daimler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00507Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557Details of ducts or cables
    • B60H1/00564Details of ducts or cables of air ducts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/24Devices purely for ventilating or where the heating or cooling is irrelevant
    • B60H1/241Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle
    • B60H1/244Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle located in the rear area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00507Details, e.g. mounting arrangements, desaeration devices
    • B60H2001/006Noise reduction

Abstract

The invention relates to an air duct 1 for motor vehicles, having a two-section duct wall 3 which is formed by a covering element 4 used at least partially as the first duct wall section 3.1 and by a car body element used as the second duct wall section 3.2

Description

    BACKGROUND AND SUMMARY OF THE INVENTION
  • [0001]
    This invention relates to an air duct for motor vehicles having a flow longitudinal axis and at least one duct wall, at least partially encasing the flow longitudinal axis in the circumferential direction.
  • [0002]
    German document DE 1430918 discloses a ventilation device for vehicles, in particular motor vehicles, with ventilation openings, which are arranged in the windows or door frames, which are of at least partially hollow design, and which connect the interior of the vehicle to the outside air. The air flowing through the interior of the vehicle enters the cavity through the openings during the journey, flows upward within the door frame on both sides and exits again from the cavity through openings.
  • [0003]
    It is known from German document DE 195 21 192 A1 that outgoing air flows out of the interior of the passenger cell in the region of the windows through the side walls behind the ceiling covering and from there through apertures into the further ducts of the roof closing panel, which ducts are used for guiding outgoing air. The air is therefore guided, on the one hand, by covering parts and, on the other hand, by ducts provided for this purpose.
  • [0004]
    One object of the present invention is the object of designing and arranging an air duct in such a manner that a simple, partially optimized construction and a noise-optimized use are ensured.
  • [0005]
    This object is achieved according to the invention by way of a duct wall which has a first duct wall section and at least one second duct wall section, and by having the first duct wall section at least partially formed by a covering element and the second duct wall section at least partially formed by a car body element.
  • [0006]
    The effect achieved by this is that resolution of the conflict between the aims of a functioning ventilation of the vehicle interior, the acoustics of the vehicle interior and the use of components which, as far as possible, are multifunctional and lightweight is ensured. The integration of the air duct into the interior covering makes it possible to avoid additional sections for the duct. In addition, the covering parts and their properties can be at least partially used in order to optimize the development of noise in the passenger interior.
  • [0007]
    For this purpose, it is advantageous for the first duct wall section to be able to be placed against the second duct wall section in a connectable and sealing manner in the circumferential direction with respect to the flow longitudinal axis. Both duct wall sections surround the flow longitudinal axis or the flow main axis and therefore form an air duct which is closed around the flow longitudinal axis. The cross-sectional shape of the air duct may be designed here as desired. Provision is also made for the cross section to change with respect to the flow longitudinal axis or flow direction. An optimum transportation of air is therefore firstly ensured, and secondly a development of noise coming from the air duct into the passenger interior is prevented.
  • [0008]
    According to one development, an additional possibility is for the inside in each case of the first duct wall section and/or of the second duct wall section to have at least one acoustically active layer. The use of an acoustically active layer optimizes or reduces the input of sound emanating from the air duct into the passenger interior.
  • [0009]
    Furthermore, it is advantageous for the inside of the first duct wall section and/or of the second duct wall section to have a first acoustically active layer and at least one second acoustically active layer which is superimposed or arranged on the first acoustically active layer. The use of a plurality of acoustically active layers which are arranged one above another ensures an optimum coordination of the acoustic insulation.
  • [0010]
    It is also advantageous for the first acoustically active layer to have a larger volume weight than the second acoustically active layer, and for the first acoustically active layer to be designed as a high-pass filter with respect to the noise frequency and for the second acoustically active layer to be designed as a low-pass filter. The use of different volume weights for the acoustically active layers makes it possible for account to be taken of the frequency band which is generated in the air duct and transmitted by the air duct. The acoustically active layer with the greater volume weight, i.e. with the greater density, will prevent medium and low frequencies from being irradiated acoustically from the air duct into the passenger interior. It is used as a high-pass filter. Corresponding to this, the use of acoustically active layers with a low volume weight, i.e. with low density, leads to the absorption of high-frequency components of the acoustic stream to be absorbed. They are therefore used as low-pass filters.
  • [0011]
    According to one preferred embodiment of the invention, provision is finally made for a sealing element to be provided between the first duct wall section and the second duct wall section. The use of an additional sealing element ensures that the air duct is soundproof.
  • [0012]
    In conjunction with the design and arrangement according to the invention, it is advantageous that at least one releasable connecting element is provided between the first duct wall section and the second duct wall section. The releasable connecting elements are used for the simple and rapid installation and the correspondingly simple and rapid removal of the covering elements or of the duct wall sections.
  • [0013]
    It is furthermore advantageous for the first duct wall section to have two sides which can be placed with their end faces onto the second duct wall section. The flow longitudinal axis is therefore entirely surrounded by the air duct in the circumferential direction.
  • [0014]
    In addition, it is advantageous for the first duct wall section to be of L- or U-shaped design in cross section, and for sides thereof to run, with respect to the flow cross section, approximately parallel to the second duct wall to form two limbs of the profile.
  • [0015]
    Further advantages and details of the invention are apparent from the patent claims, explained in the description, and illustrated in the figures.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0016]
    FIG. 1 shows a sectional illustration of the air duct with first and second duct wall sections; and
  • [0017]
    FIG. 2 shows a perspective view of a covering element with two duct wall sections.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0018]
    The air duct 1 which is illustrated in FIG. 1 is formed from a first duct wall section 3.1 and a second duct wall section 3.2. The second duct wall section 3.2 is here part of a car body element 5 or of the car body wall and is L-shaped in cross section.
  • [0019]
    The first duct wall section 3.1 is likewise L-shaped in cross section with a first limb 3.3 and a second limb 3.3′. The two limbs 3.3, 3.3′ bear in this case with their end faces against the second duct wall section 3.2 and against the car body element 5.
  • [0020]
    The first duct wall section 3.1 is formed from a covering element 4 which has a first acoustically active layer 6.1 on the inside of the air duct 1, and a second acoustically active layer 6.2 above it. The two acoustically active layers 6.1, 6.2 arranged one above the other are likewise of L-shaped design in cross section in accordance with the L shape of the covering element 4. And they butt with their respective end faces against the car body element 5.
  • [0021]
    The first acoustically active layer 6.1 is of substantially thinner design here than the second acoustically active layer 6.2 and also has a greater density than the second acoustically active layer 6.2.
  • [0022]
    At the end of the second limb 3.3′, the covering element 4 has a closing element 3.4 which permits the point of abutment between the covering element 4 and the car body element 5 to taper at an acute angle.
  • [0023]
    The covering element 4 which is illustrated in FIG. 2 has two duct wall sections 3.1, 3.1′ and is arranged in a motor vehicle back (not illustrated specifically). The respective duct wall sections 3.1, 3.1′ are assigned an inlet flow 2.2′ which is deflected toward the motor vehicle rear and leaves the vehicle rear as an outlet flow 7, 7′. The respective duct wall sections 3.1, 3.1′ are equipped here, according to FIG. 1, with a first acoustically active layer 6.1 and a second acoustically active layer 6.2 on the inside of the covering element 4.

Claims (21)

  1. 1-10. (canceled)
  2. 11. A duct wall of an air duct for motor vehicles having a flow longitudinal axis, the duct wall at least partially encasing the flow longitudinal axis in the circumferential direction and comprising:
    a first duct wall section, and
    at least one second duct wall section,
    wherein the first duct wall section is at least partially formed by a covering element, and
    wherein the second duct wall section is at least partially formed by a car body element.
  3. 12. The duct wall as claimed in claim 11, wherein the first duct wall section can be placed against the second duct wall section in a connectable and sealing manner in the circumferential direction with respect to the flow longitudinal axis.
  4. 13. The air duct wall as claimed in claim 11, wherein an inside of the first duct wall section has, an inside of the second duct wall section has, or insides of the first and second duct wall sections have at least one acoustically active layer.
  5. 14. The air duct wall as claimed in claim 11, wherein an inside of the first duct wall section has, an inside of the second duct wall section has, or insides of the first and second duct wall sections have a first acoustically active layer and at least one second acoustically active layer which is superimposed or arranged on the first acoustically active layer.
  6. 15. The air duct wall as claimed in claim 14, wherein the first acoustically active layer has a greater volume weight than the second acoustically active layer.
  7. 16. The air duct wall as claimed in claim 14, wherein the first acoustically active layer is designed as a high-pass filter with respect to noise frequency and the second acoustically active layer is designed as a low-pass filter.
  8. 17. The air duct wall as claimed in claim 11, wherein a sealing element is provided between the first duct wall section and the second duct wall section.
  9. 18. The air duct wall as claimed in claim 11, wherein at least one releasable connecting element is provided between the first duct wall section and the second duct wall section.
  10. 19. The air duct wall as claimed in claim 11, wherein the first duct wall section has two sides which can be placed with their end faces onto the second duct wall section.
  11. 20. The air duct wall as claimed in claim 11, wherein the first duct wall section is of L- or U-shaped design in cross section, and wherein sides thereof run, with respect to a flow cross section, approximately parallel to the second duct wall part to form two limbs of a profile.
  12. 21. The air duct wall as claimed in claim 12, wherein an inside of the first duct wall section has, an inside of the second duct wall section has, or insides of the first and second duct wall sections have at least one acoustically active layer.
  13. 22. The air duct wall as claimed in claim 12, wherein an inside of the first duct wall section has, an inside of the second duct wall section has, or insides of the first and second duct wall sections have a first acoustically active layer and at least one second acoustically active layer which is superimposed or is arranged on the first acoustically active layer.
  14. 23. The air duct wall as claimed in claim 22, wherein the first acoustically active layer has a greater volume weight than the second acoustically active layer.
  15. 24. The air duct wall as claimed in claim 22, wherein the first acoustically active layer is designed as a high-pass filter with respect to noise frequency and the second acoustically active layer is designed as a low-pass filter.
  16. 25. The air duct wall as claimed in claim 12, wherein a sealing element is provided between the first duct wall section and the second duct wall section.
  17. 26. The air duct wall as claimed in claim 12, wherein at least one releasable connecting element is provided between the first duct wall section and the second duct wall section.
  18. 27. The air duct wall as claimed in claim 12, wherein the first duct wall section has two sides which can be placed with their end faces onto the second duct wall section.
  19. 28. The air duct wall as claimed in claim 12, wherein the first duct wall section is of L- or U-shaped design in cross section, and wherein sides thereof run, with respect to a flow cross section, approximately parallel to the second duct wall part to form two limbs of a profile.
  20. 29. The air duct wall as claimed in claim 13, wherein a sealing element is provided between the first duct wall section and the second duct wall section.
  21. 30. The air duct wall as claimed in claim 13, wherein at least one releasable connecting element is provided between the first duct wall section and the second duct wall section.
US10548756 2003-03-12 2004-03-03 Two-section air duct Abandoned US20060211355A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2003110651 DE10310651A1 (en) 2003-03-12 2003-03-12 Air duct for motor vehicles has first and second duct wall sections, with first section formed at least partially by lining element, and second section formed at least partially by body element
DE10310651.0 2003-03-12
PCT/EP2004/002110 WO2004080736A1 (en) 2003-03-12 2004-03-03 Two-section air duct

Publications (1)

Publication Number Publication Date
US20060211355A1 true true US20060211355A1 (en) 2006-09-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10548756 Abandoned US20060211355A1 (en) 2003-03-12 2004-03-03 Two-section air duct

Country Status (4)

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US (1) US20060211355A1 (en)
JP (1) JP2006519727A (en)
DE (1) DE10310651A1 (en)
WO (1) WO2004080736A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803515A1 (en) * 2013-05-14 2014-11-19 Jsp Corporation Duct

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007024880B4 (en) * 2007-05-29 2016-02-11 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Cladding for use in an interior of a vehicle
DE102009039150A1 (en) 2009-08-27 2011-03-03 Röchling Automotive AG & Co. KG Method for manufacturing tubular air duct utilized for introducing air-conditioned air of air conditioning system into interior of motor vehicle, involves fastening damping element to air duct by contacting with plasticized plastic

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US2172944A (en) * 1936-08-14 1939-09-12 Burgess Battery Co Ventilating system
US2799902A (en) * 1953-07-02 1957-07-23 Gen Motors Corp Silencing baffle for defroster outlet
US3496058A (en) * 1966-11-07 1970-02-17 Kaiser Aluminium Chem Corp Metallic foam laminate
US4343507A (en) * 1979-06-07 1982-08-10 Duewag Aktiengesellschaft Mounting arrangement for a ventilation or heating system for vehicles
US4604946A (en) * 1984-05-25 1986-08-12 Nissan Motor Company, Limited Structure of defroster nozzle for automotive vehicle
US4615411A (en) * 1982-05-27 1986-10-07 Dynamit Nobel Ag Sound-insulated flow duct and process for the manufacture thereof
US4640184A (en) * 1984-05-07 1987-02-03 Toyota Jidosha Kabushiki Kaisha Mounting structure for a roof duct
US4646879A (en) * 1984-08-16 1987-03-03 Gebr. Happich Gmbh Air duct, or the like, for instrument panel for automotive vehicles
US4874649A (en) * 1987-03-12 1989-10-17 Krupp Kautex Maschinenbau Gmbh. Process for producing hollow bodies of thermoplastic material
US5199846A (en) * 1990-10-22 1993-04-06 Hitachi, Ltd. Centrifugal fan with noise suppressing arrangement
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US5354114A (en) * 1993-06-21 1994-10-11 Davidson Textron Inc. Integrated cross car structural duct cluster
US5459291A (en) * 1992-09-29 1995-10-17 Schuller International, Inc. Sound absorption laminate
US5762395A (en) * 1996-06-25 1998-06-09 General Motors Corporation Molded cross car support structure
US5795634A (en) * 1995-09-22 1998-08-18 Totaku Industries, Inc. Heat insulating noise reducing duct
US5823602A (en) * 1993-06-15 1998-10-20 Davidson Textron Inc. Structural instrument panel carrier assembly
US5934744A (en) * 1997-10-01 1999-08-10 General Motors Corporation Cross car structural beam
US6033756A (en) * 1996-12-04 2000-03-07 Pritex Limited Apparatus for and method of attenuating acoustic energy
US6238282B1 (en) * 1999-11-30 2001-05-29 General Electric Company Locomotive cabin ventilation apparatus and method
US6279978B1 (en) * 1999-10-05 2001-08-28 Deere & Company Work vehicle roof structure
US20020145309A1 (en) * 2001-04-10 2002-10-10 Kazushi Shikata Vehicular air-conditioning duct structure and forming method, and vehicular electric-wiring fixing structure
US6464280B1 (en) * 1999-03-25 2002-10-15 Toyoda Gosei Co., Ltd. Instrument panel

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JPH0144524B2 (en) * 1985-03-29 1989-09-28 Nissan Shatai Co
DE19626441B4 (en) * 1996-06-20 2004-03-25 Sommer-Allibert-Lignotock Gmbh Cockpit for motor vehicles
JP3367637B2 (en) * 1997-10-16 2003-01-14 日産自動車株式会社 Sound insulation structure of the automobile cabin

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2172944A (en) * 1936-08-14 1939-09-12 Burgess Battery Co Ventilating system
US2799902A (en) * 1953-07-02 1957-07-23 Gen Motors Corp Silencing baffle for defroster outlet
US3496058A (en) * 1966-11-07 1970-02-17 Kaiser Aluminium Chem Corp Metallic foam laminate
US4343507A (en) * 1979-06-07 1982-08-10 Duewag Aktiengesellschaft Mounting arrangement for a ventilation or heating system for vehicles
US4615411A (en) * 1982-05-27 1986-10-07 Dynamit Nobel Ag Sound-insulated flow duct and process for the manufacture thereof
US4640184A (en) * 1984-05-07 1987-02-03 Toyota Jidosha Kabushiki Kaisha Mounting structure for a roof duct
US4604946A (en) * 1984-05-25 1986-08-12 Nissan Motor Company, Limited Structure of defroster nozzle for automotive vehicle
US4646879A (en) * 1984-08-16 1987-03-03 Gebr. Happich Gmbh Air duct, or the like, for instrument panel for automotive vehicles
US4874649A (en) * 1987-03-12 1989-10-17 Krupp Kautex Maschinenbau Gmbh. Process for producing hollow bodies of thermoplastic material
US5199846A (en) * 1990-10-22 1993-04-06 Hitachi, Ltd. Centrifugal fan with noise suppressing arrangement
US5333554A (en) * 1991-04-26 1994-08-02 Hitachi, Ltd. Vehicle and method of producing the same
US5459291A (en) * 1992-09-29 1995-10-17 Schuller International, Inc. Sound absorption laminate
US5823602A (en) * 1993-06-15 1998-10-20 Davidson Textron Inc. Structural instrument panel carrier assembly
US5354114A (en) * 1993-06-21 1994-10-11 Davidson Textron Inc. Integrated cross car structural duct cluster
US5795634A (en) * 1995-09-22 1998-08-18 Totaku Industries, Inc. Heat insulating noise reducing duct
US5762395A (en) * 1996-06-25 1998-06-09 General Motors Corporation Molded cross car support structure
US6033756A (en) * 1996-12-04 2000-03-07 Pritex Limited Apparatus for and method of attenuating acoustic energy
US5934744A (en) * 1997-10-01 1999-08-10 General Motors Corporation Cross car structural beam
US6464280B1 (en) * 1999-03-25 2002-10-15 Toyoda Gosei Co., Ltd. Instrument panel
US6279978B1 (en) * 1999-10-05 2001-08-28 Deere & Company Work vehicle roof structure
US6238282B1 (en) * 1999-11-30 2001-05-29 General Electric Company Locomotive cabin ventilation apparatus and method
US20020145309A1 (en) * 2001-04-10 2002-10-10 Kazushi Shikata Vehicular air-conditioning duct structure and forming method, and vehicular electric-wiring fixing structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2803515A1 (en) * 2013-05-14 2014-11-19 Jsp Corporation Duct
US9057533B2 (en) 2013-05-14 2015-06-16 Jsp Corporation Duct

Also Published As

Publication number Publication date Type
JP2006519727A (en) 2006-08-31 application
WO2004080736A1 (en) 2004-09-23 application
DE10310651A1 (en) 2004-09-23 application

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