CN104999893A - In-vehicle air pressure balance device with noise reduction function - Google Patents
In-vehicle air pressure balance device with noise reduction function Download PDFInfo
- Publication number
- CN104999893A CN104999893A CN201510439301.9A CN201510439301A CN104999893A CN 104999893 A CN104999893 A CN 104999893A CN 201510439301 A CN201510439301 A CN 201510439301A CN 104999893 A CN104999893 A CN 104999893A
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- China
- Prior art keywords
- cavity
- air
- blade
- inlet pipe
- output cavity
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
- B60H1/248—Air-extractors, air-evacuation from the vehicle interior
- B60H1/249—Air-extractors, air-evacuation from the vehicle interior using one-way valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H2001/006—Noise reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to an in-vehicle air pressure balance device with a noise reduction function. The device comprises a shell, two partition plates, an air inlet pipe, a transition pipe and a pressure reduction valve. An inlet and an outlet are formed in the shell, and an inner cavity of the shell is divided into a resonant cavity, an expansion cavity and an output cavity through the two partition plates; one end of the air inlet pipe is matched with the inlet and is communicated with the interior of a vehicle, and the other end of the air inlet pipe penetrates the two partition plates to be communicated with the output cavity; noise reduction holes are evenly distributed in the portion, located in the expansion cavity, of the air inlet pipe, and two ends of the transition pipe stretch into the resonant cavity and the expansion cavity respectively; the pressure reduction valve comprises blades and gratings, wherein the blades cover the outlet, and the gratings are used for supporting the blades; the pressure reduction valve is arranged at the position of the outlet, and is used for preventing air from flowing into the output cavity from the outer portion of the vehicle; and when the air pressure in the output cavity exceeds the large air pressure, the pressure reduction valve is opened, and therefore the air is allowed to flow to the outer portion of the vehicle from the output cavity. The air pressure inside the vehicle can be balanced, and meanwhile the noise transmitted to the interior of the vehicle from the outlet can be removed.
Description
Technical field
The present invention relates to the structure from automotive interior to automobile external hold-off pressure, be specifically related to a kind of car internal gas pressure balancing device with silencing function.
Background technology
Along with the raising that people require vehicle ride comfort, in order to improve the sound insulation property of car load, the leak tightness of current automobile all has greatly improved.Thus cause automotive interior air pressure once change, be just difficult to return to the normal barometric pressure scope that people's ear feels comfortable.When automobile closing the door, over circulation, turn on the aircondition time automotive interior air pressure can raise, in order to reduce the air pressure of automotive interior, a balance port being set usually on vehicle body sheet metal and carrying out pressure release.Reach the object of balanced car air pressure inside, the larger effect of area of balance port is better, but in order to reduce the noise being delivered to automotive interior by automobile external by balance port, reduces manufacturing cost, the area of balance port needs again the smaller the better, even advises cancelling.Prior art is when balance port place designing car internal gas pressure balancing device, and all only consider the ventilating problem of automotive interior, do not carry out noise reduction process, the noise being passed to automotive interior by car internal gas pressure balancing device is difficult to meet the demands.Therefore need to design and a kind ofly balanced car air pressure inside can either have again the device of silencing function.
Summary of the invention
The object of the invention is to propose a kind of car internal gas pressure balancing device with silencing function, this balancing device can balanced car air pressure inside, has silencing function again, improves the traveling comfort of automobile.
A kind of car internal gas pressure balancing device with silencing function of the present invention, comprising: housing, described housing can be arranged on the vehicle body sheet metal of automobile, and described housing is provided with import and outlet, and described outlet is used for being communicated with automobile external; Two dividing plates, described two dividing plates are located at the inner chamber of described housing to be separated into the resonant cavity, expansion cavity and the output cavity that distribute successively to described Way out along described import in described housing, described output cavity and described outlet; Air inlet pipe, one end of described air inlet pipe coordinates with described import and for being communicated with automotive interior, the other end of described air inlet pipe is communicated with described output cavity through described two dividing plates, and the part that described air inlet pipe is positioned at described expansion cavity is evenly distributed with bloop; Transition conduit, described transition conduit is through the dividing plate described resonant cavity and expansion cavity, and the two ends of described transition conduit stretch in described resonant cavity and in described expansion cavity respectively; Reducing valve, described reducing valve is located at described exit, for preventing air from flowing into described output cavity from automobile external, and when the air pressure of described output cavity inside exceedes barometric pressure, described reducing valve is opened, thus allows air to flow to automobile external from described output cavity.Adopt said structure, this balancing device can the air pressure of balanced car inside, can eliminate the noise transmitted to automotive interior by outlet simultaneously.
Further, described reducing valve comprises the covering blade of several flexibilities of described outlet and the grid for supporting described blade, described blades installation is in the outside of described grid, when the air pressure of described output cavity inside exceedes barometric pressure, described bending blade to form opening, thus allows air to flow to automobile external from described output cavity.This structure of relief pressure valve is simple, takes up room little.
Further, described blade is two, and the upper end of described blade is fixed on described grid, and described blade tilts towards the direction of described output cavity from bottom to up.Adopt said structure, under the effect of blade self gravitation, blade can better be fitted on the lateral surface of grid, prevents air from flowing into described output cavity from automobile external.
Further, described blade is rubber tree leaf.
Further, described housing is provided with the outward extending flange of a circle, described flange is equipped with the seal ring fitted tightly with described vehicle body sheet metal, to make to keep between described flange and described vehicle body sheet metal sealing.
Further, described housing is provided with several clamp, and several clamp is for being fixed on described vehicle body sheet metal by described housing.
Further, the part that described air inlet pipe is positioned at described expansion cavity is enclosed with sound-absorbing material layer.To strengthen erasure effect.
The present invention is by arranging reducing valve in exit, the air of automotive interior can be made to automobile external nonreturn flow, and when both ensure that automotive interior air pressure raised, air can be rapidly to automobile external and discharge, balanced car air pressure inside, in turn ensure that the air-tightness of automobile; By arranging two dividing plates, air inlet pipe and transition conduit, and on air inlet pipe, being provided with bloop and sound-absorbing material layer, the noise transmitted to automotive interior by exit can be eliminated, thus, NVH performance and the comfort property of automobile can be improved.And this balance device structure is simple, takes up room little, with low cost, can be arranged on vehicle body sheet metal very easily, be suitable for heavy industrialization application.
Accompanying drawing explanation
Fig. 1 is one of car internal gas pressure balancing device of the present invention block diagram when not installing blade;
Fig. 2 is the block diagram two of car internal gas pressure balancing device of the present invention when not installing blade;
Fig. 3 is the cut-away view of car internal gas pressure balancing device of the present invention;
Fig. 4 is the A-A section-drawing in Fig. 3;
Fig. 5 is the structural representation of car internal gas pressure balancing device of the present invention when being provided with blade.
In figure: 1-housing; 2-base plate; 3-the first dividing plate; 4-second partition; 5-air inlet pipe; 6-transition conduit; 7-sound-absorbing material layer; 8-grid; 9-blade; 10-flange; 11-seal ring; 12-clamp; 13-resonant cavity; 14-expansion cavity.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of car internal gas pressure balancing device with silencing function as depicted in figs. 1 and 2, this balancing device is arranged on vehicle body sheet metal, vehicle body sheet metal is provided with the balance port corresponding with this balancing device, this balancing device comprises in square and the housing 1 of hollow, one end of housing 1 is the outlet for being communicated with automobile external, the other end is base plate 2, and base plate 2 is provided with import.Housing 1 is provided with the outward extending flange 10 of a circle, and flange 10 is positioned at the periphery of outlet, flange 10 is equipped with the seal ring 11 for fitting tightly with vehicle body sheet metal, to make to keep between flange 10 and vehicle body sheet metal sealing.Housing 1 is provided with several clamp 12, and several clamp 12 coordinates with flange 10 can be fixed on balance port place by housing 1.
As shown in Figure 3, the first dividing plate 3 and second partition 4 is provided with in housing 1, the inner chamber of housing 1 is separated into the resonant cavity 13, expansion cavity 14 and the output cavity that distribute successively along import to Way out by the first dividing plate 3 and second partition 4, resonant cavity 13 is between base plate 2 and the first dividing plate 3, expansion cavity 14 between the first dividing plate 3 and second partition 4, output cavity second partition 4 and outlet between and output cavity and outlet.
As shown in Figure 4, air inlet pipe 5 and transition conduit 6 is also provided with in housing 1, one end of air inlet pipe 5 coordinates with import and for being communicated with automotive interior, the other end of air inlet pipe 5 is communicated with output cavity with second partition 4 through the first dividing plate 3, the part that air inlet pipe 5 is positioned at expansion cavity 14 is evenly distributed with bloop, the part that air inlet pipe 5 is positioned at expansion cavity 14 is enclosed with sound-absorbing material layer 7; Transition conduit 6 is through the first dividing plate 3, and the two ends of transition conduit 6 stretch in resonant cavity 13 and in expansion cavity 14 respectively.
The exit of housing 1 is provided with reducing valve, reducing valve comprises the flexible blade 9 of two of cover outlet and the grid 8 for support blade 9, two blades 9 are arranged on the outside of grid 8 along the vertical direction side by side, as shown in Figure 5, the upper end of blade 9 is fixed on grid 8, and blade 9 tilts towards the direction of output cavity from bottom to up, and shape and the blade 9 of grid 13 lateral surface adapt, to make blade 9 effectively can keep the closed of outlet in normal state, blade 9 is rubber tree leaf.Output cavity is communicated with automotive interior by air inlet pipe 5, reducing valve can prevent air from flowing into output cavity from automobile external, and when the air pressure of output cavity inside exceedes barometric pressure, make blade 9 bending to form opening, now reducing valve is in opening, thus allow air to flow to automobile external from output cavity, consistent with the air pressure of the air pressure with automobile external that make automotive interior.
In real work, when air-conditioning etc. opened in the process of moving by closed door, automobile time, the air pressure of automotive interior can raise.Now the air-flow of automotive interior can flow to reducing valve place by air inlet pipe 5, and blade 9 forms opening at the flex under action of air-flow, and air-flow is just discharged into automobile external by automotive interior, until internal and external pressure balance, blade 9 returns to again original make position.
When blade 9 is bent to form opening, the noise of automobile external also can enter into automotive interior by reducing valve.The air inlet pipe 5 of this car internal gas pressure balancing device, transition conduit 6, sound-absorbing material layer 7, expansion cavity 14 resonant cavity 13 form a compound sound-absorption structural, have wider sound sucting band.The part being positioned at expansion cavity 14 due to air inlet pipe 5 is provided with bloop, and form micropunch noise-reducing structure, after noise enters air inlet pipe 5 by outlet, the noise of a part of intermediate frequency and low frequency is eliminated, and noise obtains certain decay.Again by sound-absorbing material layer 7, the acoustic energy of noise can be converted into heat energy, the noise of high band is absorbed.After noise enters resonant cavity 13 by transition conduit 6, the noise of intermediate frequency and low frequency weakens further, and final noise just drops to a lower level.
Upper and lower in present specification is as the criterion with Fig. 5.
Claims (7)
1. there is a car internal gas pressure balancing device for silencing function, it is characterized in that, comprising:
Housing (1), described housing (1) can be arranged on the vehicle body sheet metal of automobile, and described housing (1) is provided with import and outlet, and described outlet is used for being communicated with automobile external;
Two dividing plates, described two dividing plates are located in described housing (1) the inner chamber of described housing (1) is separated into the resonant cavity (13), expansion cavity (14) and the output cavity that distribute successively to described Way out along described import, described output cavity and described outlet;
Air inlet pipe (5), one end of described air inlet pipe (5) coordinates with described import and for being communicated with automotive interior, the other end of described air inlet pipe (5) is communicated with described output cavity through described two dividing plates, and the part that described air inlet pipe (5) is positioned at described expansion cavity (14) is evenly distributed with bloop;
Transition conduit (6), described transition conduit (6) is through the dividing plate described resonant cavity (13) and expansion cavity (14), and the two ends of described transition conduit (6) stretch in described resonant cavity (13) and in described expansion cavity (14) respectively;
Reducing valve, described reducing valve is located at described exit, for preventing air from flowing into described output cavity from automobile external, and when the air pressure of described output cavity inside exceedes barometric pressure, described reducing valve is opened, thus allows air to flow to automobile external from described output cavity.
2. car internal gas pressure balancing device according to claim 1, it is characterized in that: described reducing valve comprises the covering blade (9) of several flexibilities of described outlet and the grid (8) for supporting described blade (9), described blade (9) is arranged on the outside of described grid (8), when the air pressure of described output cavity inside exceedes barometric pressure, described blade (9) is bending to form opening, thus allows air to flow to automobile external from described output cavity.
3. car internal gas pressure balancing device according to claim 1, is characterized in that: described blade (9) is two, and the upper end of described blade (9) is fixed on described grid (8), and described blade (9) tilts towards the direction of described output cavity from bottom to up.
4. the car internal gas pressure balancing device according to Claims 2 or 3, is characterized in that: described blade (9) is rubber tree leaf.
5. car internal gas pressure balancing device according to claim 1, it is characterized in that: described housing (1) is provided with the outward extending flange of a circle (10), the seal ring (11) fitted tightly with described vehicle body sheet metal described flange (10) is equipped with, to make to keep sealing between described flange (10) and described vehicle body sheet metal.
6. car internal gas pressure balancing device according to claim 1, is characterized in that: described housing (1) is provided with several clamp (12), several clamp (12) is for being fixed on described vehicle body sheet metal by described housing (1).
7. car internal gas pressure balancing device according to claim 1, is characterized in that: the part that described air inlet pipe (5) is positioned at described expansion cavity (14) is enclosed with sound-absorbing material layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439301.9A CN104999893B (en) | 2015-07-24 | 2015-07-24 | A kind of in-car air-pressure balancing device with silencing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439301.9A CN104999893B (en) | 2015-07-24 | 2015-07-24 | A kind of in-car air-pressure balancing device with silencing function |
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| Publication Number | Publication Date |
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| CN104999893A true CN104999893A (en) | 2015-10-28 |
| CN104999893B CN104999893B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510439301.9A Active CN104999893B (en) | 2015-07-24 | 2015-07-24 | A kind of in-car air-pressure balancing device with silencing function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382166A (en) * | 2018-03-02 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | A kind of automotive ventilation mouth structure |
| CN110914083A (en) * | 2017-07-27 | 2020-03-24 | 标致雪铁龙汽车股份有限公司 | Device for protecting a ventilation and exhaust device of a motor vehicle |
| CN112343689A (en) * | 2020-11-19 | 2021-02-09 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112856058A (en) * | 2021-01-19 | 2021-05-28 | 中车唐山机车车辆有限公司 | Airtight structure based on whole car gas tightness of EMUs can keep |
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| US5167574A (en) * | 1990-03-06 | 1992-12-01 | Toyoda Gosei Co. Ltd. | Ventilation system |
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2015
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| EP0365395A1 (en) * | 1988-10-17 | 1990-04-25 | Automobiles Peugeot | Device for the evacuation of air for a motor vehicle |
| US5167574A (en) * | 1990-03-06 | 1992-12-01 | Toyoda Gosei Co. Ltd. | Ventilation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110914083A (en) * | 2017-07-27 | 2020-03-24 | 标致雪铁龙汽车股份有限公司 | Device for protecting a ventilation and exhaust device of a motor vehicle |
| CN108382166A (en) * | 2018-03-02 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | A kind of automotive ventilation mouth structure |
| CN112343689A (en) * | 2020-11-19 | 2021-02-09 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112343689B (en) * | 2020-11-19 | 2021-08-17 | 南京工程学院 | Composite muffler with self-adaptive resonance structure |
| CN112856058A (en) * | 2021-01-19 | 2021-05-28 | 中车唐山机车车辆有限公司 | Airtight structure based on whole car gas tightness of EMUs can keep |
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| Publication number | Publication date |
|---|---|
| CN104999893B (en) | 2017-03-01 |
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