CN209274300U - A kind of air conditioning for automobiles noise reduction air duct - Google Patents
A kind of air conditioning for automobiles noise reduction air duct Download PDFInfo
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- CN209274300U CN209274300U CN201821220900.7U CN201821220900U CN209274300U CN 209274300 U CN209274300 U CN 209274300U CN 201821220900 U CN201821220900 U CN 201821220900U CN 209274300 U CN209274300 U CN 209274300U
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- noise reduction
- air duct
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- shaped bend
- half shell
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Abstract
The utility model provides a kind of air conditioning for automobiles noise reduction air duct, and can solve existing noise reduction air duct, existing structure is complicated, manufacturing cost is high, is unfavorable for the problem of processing installation and mass production.The utility model is exactly to surround to reduce air duct interior air-flow flow velocity and avoid the generation of vortex to achieve the purpose that reduce aerodynamic noise.It includes noise reduction air duct ontology, noise reduction air duct ontology includes air inlet section, transitional pipe segment, straight pipe and sets Z-shaped bend loss there are two corner portion, Z-shaped bend loss, straight pipe bottom surface be equipped with grid type air outlet, air inlet section is docked with the air outlet of air conditioning for automobiles, the both ends of Z-shaped bend loss are connected with transitional pipe segment and straight pipe respectively, transitional pipe segment is in the flared of variable cross-section, and the osculum end of transitional pipe segment is connect with air inlet section, big opening end is connect with Z-shaped bend loss.
Description
Technical field
The utility model relates to automobile air conditioning technology fields, specially a kind of air conditioning for automobiles noise reduction air duct.
Background technique
In recent years, with the continuous reduction of the promotion of automobile sealed property and body vibration, noise, pass-by noise has had bright
It is aobvious to reduce, and be often mounted in car room due to car duct and be connected with car room, in car duct pipeline caused by turbulent flow
Airborne noise is increasingly becoming the Main Noise Sources of automobile.Aerodynamic noise in air-conditioning duct it is main by air-flow velocity and vortex
Influence, aerodynamic noise and air port noise, air duct interior air-flow flow velocity generally use 5~8m/s in order to prevent, out wind velocity be 3~
5m/s.Since the local resistance at abrupt change of cross-section pipeline, baffle, corner, air port and the other barriers in air duct is larger, often
Cause local air flow pressure x velocity gradient larger, and along with the generation of vortex, and being vortexed is exactly the main of aerodynamic noise generation
Reason.
The domestic research for air duct noise-reducing has many theories and method at present, but rests on theoretical research level mostly,
Do not focus on actual production feasibility and production cost, do not have practicability, also or the relative complex redundancy of structure, is unfavorable for batch
Production.As Chinese utility model patent " railway vehicle air conditioner system and its noise reduction air duct " (application number:
CN201720887066.6, publication date: 2018.02.27, publication number: CN207045343U) disclose a kind of rail vehicle noise reduction
Duct design method, the air duct utilize the noise transducer acquisition noise information being mounted in air duct, and according to the information of acquisition
Control instruction is sent to the sound source component in air duct, sound source component generates one and air duct noise phase phase according to control instruction
Anti- signal realizes the active control to noise, but the design increases the structural complexity and cost in air duct, additionally by
The method for generating another noise carrys out the inadequate environmental protection and energy saving of noise reduction, and there are certain risks.A kind of for another example Chinese invention patent " band
Have the smoke canal elbow of streamlined water conservancy diversion module " (application number: CN201510035602.5, publication date: 2015.05.06, publication number:
CN04595918A a kind of Flue duct design of the energy-saving and emission-reduction noise reduction in uniform inner flow field) is disclosed, which uses turns in air duct
Setting flows backwards module (non-deflector) and carrys out uniform flow field at angle, flows backwards the inner and outer surfaces of the module inner and outer surfaces with air duct respectively
With one heart, and uneven before and after the thickness of water conservancy diversion module, first is that occupying biggish volume, next is unfavorable for processing installation and mass
Production, does not account for influence of the wind speed to noise finally.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of air conditioning for automobiles noise reduction air duct, existing noise reduction wind can solve
Road is existing, and structure is complicated, manufacturing cost is high, is unfavorable for the problem of processing installation and mass production.The present invention exactly surrounds drop
Low air duct interior air-flow flow velocity achievees the purpose that reduce aerodynamic noise with the generation of vortex is avoided.
Its technical solution is a kind of air conditioning for automobiles noise reduction air duct, it is characterised in that: it includes noise reduction air duct ontology, described
Noise reduction air duct ontology includes air inlet section, straight pipe, transitional pipe segment and sets Z-shaped bend loss there are two corner portion, described Z-shaped
Bend loss, straight pipe bottom surface be equipped with grid type air outlet, the air inlet section is docked with the air outlet of air conditioning for automobiles, described
The both ends of Z-shaped bend loss are connected with the transitional pipe segment, straight pipe respectively, and the transitional pipe segment is in the flared of variable cross-section, and
The osculum end of the transitional pipe segment is connect with the air inlet section, big opening end is connect with the Z-shaped bend loss.
Further, two corner portions of the zigzag thbe section are arc-shaped.
Further, it is respectively equipped with arc-shaped deflector in two corner portions being arc-shaped of the Z-shaped bend loss,
The deflector of the circular arc is arranged in parallel with the arc surface of the corresponding corner portion being arc-shaped and central angle is equal, described
Deflector is arranged vertically and the top of the deflector, bottom end are solid with the top plate and bottom plate of the corner portion of the Z-shaped bend loss respectively
It connects.
Further, the circle of described two corner portions being arc-shaped and the deflector being set in corresponding corner portion
Heart angle is 90 °.
Further, it is respectively equipped with two pieces of deflectors being parallel to each other in each described corner portion, described two pieces
The inner space of the corner portion is separated into three equal flow-guiding channels of width by deflector.
Further, noise reduction air duct ontology be oppositely arranged by upper half shell with lower half shell and close up it is affixed form, it is described
Upper half shell, upper half shell are respectively equipped with corresponding air inlet section, transitional pipe segment, Z-shaped bend loss and straight pipe.
Further, two are offered respectively on the inside top face of two corner portions of the Z-shaped bend loss of the upper half shell
Water conservancy diversion board slot, interference is equipped with one piece of deflector respectively in every water conservancy diversion board slot.
Further, the grid type is separately installed on the upper and straight pipe of the Z-shaped bend loss of the lower half shell to go out
Air port.
Further, noise reduction air duct ontology is rectangular-section pipeline.
Further, another application in the noise reduction air duct is near round cross-section pipeline, and the section of upper half shell is
Semicircle cambered surface, the lower half shell are equipped with bottom plane, and the two sides of the bottom plane are integrally formed with symmetrical arc surface, and
The arc surface of the lower half shell two sides and the semi arch face bonding of the upper half shell, the bottom plane of the lower half shell are simultaneously located at Z
The grid type air outlet is separately installed on shape bend loss, straight pipe.
The utility model has the beneficial effects that:
(1) pass through the transitional pipe segment connection and transition of the flared in variable cross-section between its air inlet section and Z-shaped bend loss
The osculum end of pipeline section is connect with air inlet section, big opening end connect with Z-shaped bend loss, therefore enters air inlet by vehicle air conditioning outlet
Section cold/current of warm air with being gradually increased for sectional area of transitional pipe segment and flow velocity is gradually reduced, to reduce aerodynamic noise；
(2) two corner portions of its Z-shaped bend loss are arc-shaped, and effective adjustment effect can be played to air-flow, is kept away
Exempt from air-flow pipeline local sedimentation, mutation and form vortex, so that the aerodynamic noise in air duct further be effectively reduced；
(3) it is respectively arranged with parallel arc-shaped of arc surface in two arc-shaped corner portions of Z-shaped bend loss and leads
Flowing plate, and the arc surface of deflector is equal with the central angle of the circular arc of corner portion, enables deflector to right in corner portion
Air-flow carries out further effective direction and adjusts, and avoids the mutation of airflow direction, size, reduces the local resistance in air duct,
Reduce the aerodynamic noise in air duct；
(4) two pieces of arc-shaped deflectors are equipped with inside two arc-shaped corners of Z-shaped bend loss, and two pieces arc-shaped
Deflector the space in corner portion is separated into three equal flow-guiding channels of width, to enter corner portion air-flow play
Better uniform divided flows guiding role, further avoids the mutation in corner portion airflow direction, size, and air duct office is effectively reduced
Portion's resistance reduces the aerodynamic noise in air duct；
(5) air inlet section, transitional pipe segment, Z-shaped bend loss and the straight pipe in air duct are formed by upper half shell, lower half shell phase
To and close up it is rear it is affixed form, and the bottom surface of the upper half shell in two corner portions of Z-shaped bend loss is offered respectively for fastening
The water conservancy diversion board slot of corresponding circular blast baffle, overall structure is simple, is easily installed, and can greatly improve assembly rate.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram in the utility model a kind of air conditioning for automobiles noise reduction air duct and deflector；
Fig. 2 is the decomposition texture schematic diagram in the utility model a kind of air conditioning for automobiles noise reduction air duct and grid type air outlet；
Fig. 3 is a kind of the schematic diagram of the section structure of the Z-shaped bend loss in air conditioning for automobiles noise reduction of the utility model air duct；
Fig. 4 be a kind of air conditioning for automobiles noise reduction of the utility model air duct look up to schematic perspective view；
Fig. 5 is a kind of schematic perspective view of the another embodiment in air conditioning for automobiles noise reduction of the utility model air duct；
Fig. 6 is that the utility model another embodiment of Fig. 5 is looked up to structural schematic diagram；
Fig. 7 is A-A in Fig. 6 to enlarged structure schematic diagram.
Appended drawing reference: 10- air inlet section, 20- transitional pipe segment, 30-Z shape bend loss, 31- corner portion, 32- corner portion, 33-
Deflector, 34- deflector, 35- deflector, 36- deflector, 37- water conservancy diversion board slot, 38- water conservancy diversion board slot, 39- water conservancy diversion board slot, 310-
Water conservancy diversion board slot, 40- straight pipe, 50- grid type air outlet, 60- upper half shell, 70- lower half shell, 71- bottom plane, 72- arc surface,
73- mounting hole.
Specific embodiment
See FIG. 1 to FIG. 4, a kind of air conditioning for automobiles noise reduction of the utility model air duct comprising noise reduction air duct ontology, the present embodiment
The section of middle noise reduction air duct ontology be rectangle comprising air inlet section 10, straight pipe 40, transitional pipe segment 20 and set there are two turn
The Z-shaped bend loss 30 in corner 31,32, Z-shaped bend loss 30, straight pipe 40 bottom surface be equipped with grid type air outlet 50, air inlet
Section 10 is docked with the air outlet of air conditioning for automobiles, and the both ends of Z-shaped bend loss 30 are connect with transitional pipe segment 20, straight pipe 40 respectively,
Middle transitional pipe segment 20 be in variable cross-section flared, and the osculum end of transitional pipe segment 20 is connect with air inlet section 10, big opening end with it is Z-shaped
Bend loss 30 connects.
Two corner portions 31,32 of zigzag thbe section 30 are arc-shaped, and are respectively equipped with two pieces of circles in two corner portions 31,32
The deflector of arc；Specifically in conjunction with attached drawing, arc-shaped lead is equipped in the corner portion 31 of Z-shaped bend loss 30 being arc-shaped
Flowing plate 33,34, arc-shaped deflector 33,34 is arranged in parallel with the arc surface of the corresponding corner portion 31 being arc-shaped and the center of circle
Angle is equal, and the inner space of corner portion 31 is separated into three equal flow-guiding channels of width by deflector 33,34；Equally
, be equipped with arc-shaped deflector 35,36 in the corner portion 32 that is arc-shaped, arc-shaped deflector 35,36,34 with it is corresponding
The arc surface for the corner portion 32 being arc-shaped is arranged in parallel and central angle is equal, and deflector 35,36 will be in corner portion 32
Portion space is separated into three equal flow-guiding channels of width；Deflector 33,34,35,36 vertically arrangement and deflector 33,34,
35,36 top, bottom end are affixed with the top plate and bottom plate of the corner portion of corresponding Z-shaped bend loss respectively.
Preferred technical solution, two corner portions 31,32 being arc-shaped and is set to leading in corresponding corner portion
The central angle of flowing plate 33,34,35,36 is 90 °；So as to further serve as effective change air current flow direction and adjust gas
The effect of flow distribution, avoid because local air flow velocity pressure gradient it is big caused by swirl pneumatic noise generation.
Noise reduction air duct ontology be oppositely arranged by upper half shell 60 with lower half shell 70 and close up it is affixed form, upper half shell 60, upper half
Shell 70 is respectively equipped with corresponding air inlet section 10, transitional pipe segment 20, Z-shaped bend loss 30 and straight pipe 40；Wherein, upper half shell
60, the two sides of the opposite joint of lower half shell 70 are respectively equipped with horizontal-extending flange outward, upper half shell 60 and lower half shell 70
After closing up in opposite directions, then the flange of 60 two sides of upper half shell and the lip fits of 70 two sides of lower half shell are locked by bolt or fastener
It fastens；The form of welding can also be used directly to weld upper half shell 60 with lower half shell 70 integral, to improve noise reduction air duct
The overall sealing performance of ontology.
Water conservancy diversion board slot 37 and water conservancy diversion board slot are offered on the 31 inside top face of corner portion of the Z-shaped bend loss 30 of upper half shell 60
38, while water conservancy diversion board slot 39 and water conservancy diversion board slot 310 are offered on the inside top face of corner portion 32, water conservancy diversion board slot 37,38,39,
Respectively correspondingly interference is equipped with deflector 33,34,35,36 in 310, and deflector 33,34,35,36 respectively with upper half shell 60,
Lower half shell 70 is welded to connect, to guarantee the reliable installation of each deflector；The upper and straight tube of the Z-shaped bend loss 30 of lower half shell 70
Grid type air outlet 50 is separately installed in section 40；When installation, the corresponding positions of the Z-shaped bend loss 30 of lower half shell 70, straight pipe 40
It sets and opens up mounting hole 73 respectively, grid type air outlet 50 is installed in corresponding mounting hole and passes through bolt and lower half shell 70 is tight
It is solidly connected.
High speed cold/the current of warm air blown out from air-conditioner air outlet enters the air inlet section 10 in noise reduction air duct, by air inlet section
The transitional pipe segment 20 that the variable cross-section in flared is reached after 10, due to the effect of the cross-sectional expansion of transitional pipe segment 20, air-flow velocity
Decline, aerodynamic noise reduce；Air-flow continues to push ahead to Z-shaped bend loss 30, two arc-shaped corner portions of Z-shaped bend loss 30
31,32 and and corresponding 33,34,35,36 pairs of airflow directions of deflector guide, circular blast baffle adjusts gas in air duct
Flow distribution avoids the generation of eddy flow, further reduces aerodynamic noise.
In the present embodiment, the section of noise reduction air duct ontology is rectangle, this makes entire noise reduction air duct more easily process peace
Dress, and it is smaller to occupy the vehicle interior space；And the section of noise reduction air duct ontology can also use approximate circle form, see Fig. 5,
The section of the upper half shell 60 of noise reduction air duct ontology be semicircle cambered surface, lower half shell 70 be equipped with bottom plane 71, the two of bottom plane 71
Side is integrally formed with symmetrical arc surface 72, and the arc surface 72 of 70 two sides of lower half shell and the semicircle cambered surface of upper half shell 60 connect
It closes, so that entire noise reduction air duct ontology forms approximate circle, the bottom plane 71 of lower half shell 70 is simultaneously located at Z-shaped bend loss 30, straight
Grid type air outlet 50 is separately installed on pipeline section 40, same transitional pipe segment 20 and Z-shaped bend loss 30 in variable cross-section and
Deflector can slow down air-flow velocity, uniform air flow distribution, to reduce aerodynamic noise.In hydrodynamics, the flowing of fluid
Resistance is divided into on-way resistance and local resistance, and on-way resistance is the product of frictional resistant coefficient and length of flow, of the same area
In the case of, circular cross-section has minimum frictional resistant coefficient, being capable of more efficient reduction wind using approximate circle cross sectional shape
The frictional resistant coefficient in road reduces the air loss of blower, the same simplicity for keeping structure.
The specific implementation of the utility model is described in detail above, but content be only the utility model create compared with
Good embodiment should not be construed as limiting the practical range of the utility model creation.All create according to the utility model is applied
All the changes and improvements made by range etc., should still belong within the patent covering scope of the utility model.
Claims (10)
1. a kind of air conditioning for automobiles noise reduction air duct, it is characterised in that: it includes noise reduction air duct ontology, and noise reduction air duct ontology includes
Air inlet section, straight pipe, transitional pipe segment and Z-shaped bend loss there are two corner portion is set, the Z-shaped bend loss, straight pipe
Bottom surface is equipped with grid type air outlet, and the air inlet section is docked with the air outlet of air conditioning for automobiles, the both ends of the Z-shaped bend loss
It is connected respectively with the transitional pipe segment, straight pipe, the transitional pipe segment is in the flared of variable cross-section, and the transitional pipe segment is small
End is connect mouth with the air inlet section, big opening end is connect with the Z-shaped bend loss.
2. a kind of air conditioning for automobiles noise reduction air duct according to claim 1, it is characterised in that: two of the zigzag thbe section turn
Corner is arc-shaped.
3. a kind of air conditioning for automobiles noise reduction air duct according to claim 2, it is characterised in that: two of the Z-shaped bend loss
It is respectively equipped with arc-shaped deflector in the corner portion being arc-shaped, the deflector of the circular arc and the corresponding institute being arc-shaped
The arc surface for stating corner portion is arranged in parallel and central angle is equal, and the deflector is arranged vertically and the top of the deflector, bottom
It holds affixed with the top plate and bottom plate of the corner portion of the Z-shaped bend loss respectively.
4. a kind of air conditioning for automobiles noise reduction air duct according to claim 3, it is characterised in that: described two to be arc-shaped
The central angle of corner portion and the deflector being set in corresponding corner portion is 90 °.
5. a kind of air conditioning for automobiles noise reduction air duct according to claim 3 or 4, it is characterised in that: each described corner portion
Two pieces of deflectors being parallel to each other inside are respectively equipped with, the inner space of the corner portion is separated by two pieces of deflectors
Three equal flow-guiding channels of width.
6. a kind of air conditioning for automobiles noise reduction air duct according to claim 5, it is characterised in that: noise reduction air duct ontology is by upper
Half-shell be oppositely arranged with lower half shell and close up it is affixed form, the upper half shell, upper half shell be respectively equipped with corresponding air inlet section,
Transitional pipe segment, Z-shaped bend loss and straight pipe.
7. a kind of air conditioning for automobiles noise reduction air duct according to claim 6, it is characterised in that: the Z-shaped bend pipe of the upper half shell
Two water conservancy diversion board slots, interference respectively in every water conservancy diversion board slot are offered on the inside top face of two corner portions of section respectively
One piece of deflector is installed.
8. a kind of air conditioning for automobiles noise reduction air duct according to claim 6, it is characterised in that: the Z-shaped bend pipe of the lower half shell
The grid type air outlet is separately installed on the upper and straight pipe of section.
9. according to a kind of air conditioning for automobiles noise reduction air duct any in claim 6~8, it is characterised in that: the noise reduction wind
Road ontology is rectangular-section pipeline.
10. according to a kind of air conditioning for automobiles noise reduction air duct any in claim 6~8, it is characterised in that: the upper half shell
Section be semicircle cambered surface, the lower half shell be equipped with bottom plane, the two sides of the bottom plane are integrally formed with symmetrical
The bottom of arc surface, and the semi arch face bonding of the arc surface of the lower half shell two sides and the upper half shell, the lower half shell is flat
Face is simultaneously separately installed with the grid type air outlet on Z-shaped bend loss, straight pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821220900.7U CN209274300U (en) | 2018-07-31 | 2018-07-31 | A kind of air conditioning for automobiles noise reduction air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821220900.7U CN209274300U (en) | 2018-07-31 | 2018-07-31 | A kind of air conditioning for automobiles noise reduction air duct |
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| Publication Number | Publication Date |
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| CN209274300U true CN209274300U (en) | 2019-08-20 |
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| CN201821220900.7U Active CN209274300U (en) | 2018-07-31 | 2018-07-31 | A kind of air conditioning for automobiles noise reduction air duct |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944340A (en) * | 2018-07-31 | 2018-12-07 | 苏州江南航天机电工业有限公司 | Air conditioning for automobiles noise reduction air duct |
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2018
- 2018-07-31 CN CN201821220900.7U patent/CN209274300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944340A (en) * | 2018-07-31 | 2018-12-07 | 苏州江南航天机电工业有限公司 | Air conditioning for automobiles noise reduction air duct |
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