EP3959091A1 - Zerstäubersystem für ein kraftfahrzeug - Google Patents
Zerstäubersystem für ein kraftfahrzeugInfo
- Publication number
- EP3959091A1 EP3959091A1 EP20709650.4A EP20709650A EP3959091A1 EP 3959091 A1 EP3959091 A1 EP 3959091A1 EP 20709650 A EP20709650 A EP 20709650A EP 3959091 A1 EP3959091 A1 EP 3959091A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nebulization
- stack
- liquid
- grid
- motor vehicle
- 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.)
- Pending
Links
- 239000006199 nebulizer Substances 0.000 title abstract description 4
- 238000002663 nebulization Methods 0.000 claims abstract description 144
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 239000003595 mist Substances 0.000 claims abstract description 26
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 238000005276 aerator Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
Classifications
-
- 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
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/022—Moistening ; Devices influencing humidity levels, i.e. humidity control for only humidifying the air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
-
- 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
Definitions
- the present invention relates to a nebulization system for a motor vehicle.
- This system is more particularly intended for the generation of fine droplets making it possible to refresh and / or humidify a vector flow, in particular an air flow so as to form a refreshing mist.
- the invention further relates to a ventilation, heating and / or air conditioning device for a motor vehicle equipped with such a nebulization system.
- the existing nebulization systems generate noise and vibrations that can affect the comfort of vehicle users.
- the liquid jet for example the water jet generated by the system, causes, when it impacts one of the walls of the system, a flow noise.
- the present invention aims to improve the situation by proposing an optimized nebulization system.
- the invention relates to a nebulization system for a motor vehicle, said system comprising:
- nebulization enclosure provided with a nebulization nozzle, said nozzle being provided with a device for emitting acoustic waves, for example a piezoelectric element, said nebulization enclosure being configured so that the liquid coming from the reservoir forms a jet of liquid and a mist of droplets, said mist being intended to penetrate into a passenger compartment of a motor vehicle, c. at least one means of acoustic attenuation,
- said system being characterized in that said acoustic attenuation means comprises at least one grid.
- the nebulization nozzle forms a concentrator of the acoustic waves generated by the piezoelectric element
- the nebulization enclosure comprises a nebulization chamber and a nebulization stack, the nebulization nozzle being inserted at least partly in said nebulization chamber and the grid being disposed at least partly in the nebulization stack;
- the grid conforms to the shape of at least one of the walls of the nebulization chimney
- the wall is a bottom wall of the nebulization stack
- the bottom wall of the nebulization chimney comprises a chute intended to receive the jet of liquid coming from the nebulization nozzle;
- the grid matches, at least in part, the shape of the chute
- the grid extends in an inclined plane relative to the bottom wall of the nebulization stack
- the nebulization stack comprises at least one guide means extending projecting from one of the walls of the nebulization stack, said guide means being intended to guide the grid along the inclined plane;
- the guide means is a slide
- the guide means comprises a set of support points arranged on one of the walls of the nebulization stack;
- the guide means is made of material with the wall of the nebulization chimney;
- the grids are arranged in pairs and the grids of the same pair are in contact with each other;
- the grids are turned at an angle of 45 ° to each other;
- the grids are arranged at a distance from each other;
- the grid consists of a single piece or of several pieces placed end to end;
- the nebulization stack comprises at least one outlet duct for the mist
- the nebulization stack has a single mist outlet duct
- the grid is made of flexible or rigid plastic
- the grid is made of metal or a metal alloy, for example stainless steel;
- the grid is made of a hydrophobic material; - the grid is made from woven threads;
- the grid is made from a perforated sheet
- the grid has a circular, triangular, rectangular, square or hexagonal type mesh.
- a subject of the invention is also a ventilation, heating and / or air conditioning device for a motor vehicle, comprising a nebulization system as described above.
- Figure 1 shows a schematic longitudinal sectional view of a nebulization system according to a first embodiment of the present invention.
- Figure 2 shows a schematic longitudinal sectional view of a nebulization system according to a second embodiment of the present invention.
- Figure 3 shows an enlarged view of a nebulization nozzle of the nebulization system according to Figure 2.
- Figure 4 shows a sectional view along the axis A-A, of a variant of the nebulization system of Figure 2, so as to make apparent the arrangement of the grids inside the nebulization stack.
- Figure 5 shows a schematic and simplified view (the liquid reservoir and the hydraulic circuit not being shown), in longitudinal section, of an alternative embodiment of the nebulization system of Figure 3.
- Figure 6 shows a sectional front view of the nebulization system according to Figure 5 so as to make apparent the arrangement of the grids inside the nebulization stack.
- Figure 7 shows a sectional and front view of the nebulization system according to Figure 5 so as to make visible the mist entrainment ducts of such a system.
- the invention relates to a nebulization system 1 for a motor vehicle.
- the nebulization system 1 has the function of humidifying an air flow F 'intended for the passenger compartment 2 of a motor vehicle.
- the nebulization system 1 makes it possible to cool the passenger compartment 2 and improve passenger comfort.
- the nebulization system 1 comprises a reservoir 10 for a liquid and a nebulization enclosure 14.
- the liquid contained in the reservoir 10 is for example water which may contain a few drops of essential oil.
- the reservoir 10 acts as a liquid storage reservoir. It has here the general shape of a parallelepiped, but its shape is not limiting of the present invention.
- the liquid contained in the reservoir 10 is intended to be nebulized by the nebulization system 1.
- the nebulization enclosure 14 is produced here in the form of an elongated hollow body.
- It may extend along a plane inclined relative to the longitudinal axis, as shown in Figure 1, or along a plane parallel to the longitudinal axis, as shown in Figures 2 and 5.
- the nebulization enclosure 14 is provided with a nebulization nozzle 3.
- the nebulization nozzle 3 is provided with a device for emitting acoustic waves 4, for example a piezoelectric element 4.
- the piezoelectric element can be quartz.
- the acoustic wave emitting device 4 is configured so that the liquid coming from the tank 10 forms a jet 13 of liquid and a mist 12 of droplets, the mist 12 being intended to enter a passenger compartment 2 of the vehicle automobile.
- the nebulization nozzle 3 also comprises a concentrator of the sound waves generated by the piezoelectric element 4, otherwise called the acoustic concentrator and referenced 5 below.
- the acoustic concentrator 5 known to those skilled in the art comprises an enclosure 6 having a progressive narrowing from a rear wall 7 to an outlet port 8.
- the acoustic concentrator 5 also comprises at least one inlet port 9. by which the concentrator is supplied with liquid from the reservoir 10, via an inlet circuit 1 1 of liquid visible in Figures 2 and 5.
- the piezoelectric element 4 is placed against the rear wall 7 of the acoustic concentrator 5.
- the enclosure 6 is supplied with liquid via at least one inlet orifice 9 by a liquid distribution circuit comprising the reservoir 10 and preferably a pump (not shown in the figures).
- the acoustic waves generated by the piezoelectric element 4 are transmitted to the liquid contained in the enclosure 6 by the rear wall 7.
- the converging shape of the enclosure 6 makes it possible to focus the acoustic waves in the outlet 8, which produces a mist 12 of droplets around the jet 13 of liquid.
- This fog 12 is represented by a set of dots in FIG. 1 and by a dotted line in FIGS. 2 and 5.
- the fog 12 goes towards the passenger compartment 2 of the motor vehicle via the intermediary of a pipe 15 for the outlet of the mist 12, while a jet 13 of liquid flows into the storage tank 10 via a liquid recovery circuit 32 shown by arrows in the figures.
- the nebulization system 1 further comprises an inlet module 16 for a first air flow F shown by the arrows F in Figure 1.
- the inlet module 16 for the first air flow F comprises a fan 17 for setting the first air flow in motion, as well as a filter 90 capable of filtering this first air flow before it enters the air flow.
- nebulization chamber 14 comprises a fan 17 for setting the first air flow in motion, as well as a filter 90 capable of filtering this first air flow before it enters the air flow.
- the nebulization system 1 illustrated in Figures 2 to 7 further comprises an air injection volute 30 capable of channeling the air from the fan 17 for setting the first air flow in motion, in the direction of of the interior volume of the nebulization enclosure 14.
- the air injection volute 30 makes it possible in particular to rotate the first air flow F around the nebulization enclosure 14 so as to supply said nebulization enclosure 14 even more efficiently.
- each nebulization system 1 comprises acoustic attenuation means 20
- the acoustic attenuation means 20 include at least one grid 20.
- the nebulization enclosure 14 comprises a nebulization chamber 21 and a nebulization stack 18.
- the nebulization nozzle 3 is partially inserted into the nebulization chamber 21.
- the nebulization stack 18 comprises a duct 15 for the outlet of the mist 12.
- two grids 20 are arranged in the nebulization stack 18 of the nebulization system 1.
- the two grids 20 are arranged facing each other, in planes parallel to each other.
- the two grids 20 are for example brought into contact with one another. In other words, the two grids 20 are superimposed.
- the grids 20 are offset by an angle of 45 ° relative to each other in order to further attenuate the flow noise.
- the two grids 20 are arranged at a distance from one another.
- the two grids 20 are held in the nebulization stack 18, for example by gluing or through fixing means, for example spikes formed from material with the nebulization stack 18.
- the grid 20 is for example made of flexible plastic (mosquito net type) or rigid.
- the grid 20 can also be made of metal or a metal alloy, for example steel.
- the grid 20 can be made from woven threads.
- the grid 20 is in the form of a mesh.
- the grid 20 can still be made from a perforated sheet.
- the type of mesh used is not limiting of the present invention, the mesh can be of circular, triangular, rectangular, square, hexagonal, or even of another shape chosen arbitrarily.
- the grids 20 used in the nebulization system 1 as illustrated may be of the same materials or of different materials.
- the bottom wall 19 is one of the walls of the nebulizer stack 18 that the jet 13 of liquid hits.
- the jet 13 of liquid is the part of non-nebulized liquid at the outlet of the nebulization chamber 21, generally formed of drops too large to be entrained by the first air flow F.
- the term drops is understood to mean too large drops with a diameter greater than 10 ⁇ m.
- the grids 20 make it possible to reduce the speed of the jet 13 of liquid at the point of impact 200 located on the bottom wall 19 of the nebulization stack 18.
- the user of the nebulization system 1 is no longer inconvenienced by the noise generated when the jet 13 strikes the bottom wall 19.
- An air flow enters the nebulization system 1 via the inlet module 16 for the first air flow F and, in particular, through the filter 90 for the first air flow F , then passes through the fan 17 for setting the first air flow F.
- the air flow F arrives in the air injection volute 30 before entering the nebulization enclosure 14 at the level of the nebulization chamber 21.
- the injection volute of air 30 allows the introduction of the first air flow F into the nebulization chamber 21 perpendicular to the longitudinal axis of the nebulization enclosure 14.
- the first air flow F introduced into the nebulization chamber 21 is then directed parallel to the longitudinal axis of the nebulization chamber 14 and against the direction taken by the liquid nebulized by the nebulization nozzle 3 and this until it abuts against redirection means (not shown).
- the redirection means then direct the air substantially parallel to the direction taken by the liquid nebulized in the nebulization nozzle 3.
- the mixing between the first air flow F and the nebulized liquid occurs in the nebulization enclosure 14, in particular in the nebulization chamber 21.
- the first air flow F contributes to expel the mist 12 of droplets from the nebulization system 1.
- the nebulization system 1 further comprises a duct 15 for the outlet of the mist.
- the duct 15 for the outlet of the mist is arranged in the extension of the nebulization stack 18, and it is slightly inclined with respect to the axis of extension of the exhaust stack. nebulization 18.
- the mist outlet duct 15 extends here as far as a terminal orifice placed in fluid connection with at least one aerator 50 of the motor vehicle and, thus, the passenger compartment 2 of this same vehicle.
- the nebulization system 1 comprises an intake system 80 for a second air flow F '.
- the intake system 80 for the second air flow F ' is composed of an air inlet (not shown), a fan 170 for setting the second air flow F' in motion, a duct 84 for supplying the second air flow to the aerator 50 and an outlet 86.
- the second air flow F ' can be taken, for example, via a nozzle in the passenger compartment 2 of the motor vehicle.
- the outlet 86 of the intake system 80 for the second air flow F ' is arranged, in the embodiment illustrated in FIG. 1, at the level of the aerator 50.
- the aerator 50 defines a zone of mixture for the mist 12 of droplets coming from the mist outlet duct 34 and for the second air flow F 'coming from the intake system 80.
- the acoustic attenuation means 20 comprise two grids 20 arranged on the bottom wall 19 of the nebulization stack 18.
- the bottom wall 19 of the nebulization stack 18 further comprises a chute 40 intended to receive the jet 13 of liquid coming from the nebulization nozzle 3.
- the two grids 20 match, at least in part, the shape of the chute 40.
- the number of grid layers 20 can be adapted and is not limiting of the present invention.
- the nebulization system 1 further comprises at least one grid 20 extending in an inclined plane 23 relative to the bottom wall 19 of the nebulization stack 18.
- the nebulization stack 18 is of circular section.
- the nebulization stack 18 further comprises a guide means 70 projecting from one of the walls of said stack.
- this guide means is a slide 70 made from the material of the wall of the nebulization stack 18.
- other guide means can be envisaged, such as for example a set of points d. 'support arranged on one of the walls of the nebulization stack.
- the slide 70 is intended to guide the grid 20 along the inclined plane 23.
- the set of three grids 20 arranged in the nebulization system 1 illustrated in Figures 5 to 7 has the function of slowing down the jet 13 of liquid coming from the nebulization nozzle 3.
- the nebulization system 1 comprises two conduits 15 for the outlet of the mist.
- the nebulization system 1 can be integrated into a motor vehicle, for example in a central console.
- the nebulization system 1 may be placed in a housing located above and / or between the rear ventilation ducts and below the armrests of the front seats.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1904294A FR3095375A1 (fr) | 2019-04-24 | 2019-04-24 | Système de nébulisation pour véhicule automobile |
PCT/FR2020/050244 WO2020217012A1 (fr) | 2019-04-24 | 2020-02-11 | Systeme de nebulisation pour vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3959091A1 true EP3959091A1 (de) | 2022-03-02 |
Family
ID=67742713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20709650.4A Pending EP3959091A1 (de) | 2019-04-24 | 2020-02-11 | Zerstäubersystem für ein kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220185076A1 (de) |
EP (1) | EP3959091A1 (de) |
CN (1) | CN113748034A (de) |
FR (1) | FR3095375A1 (de) |
WO (1) | WO2020217012A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970006598U (ko) * | 1995-07-31 | 1997-02-21 | 초음파 가습기 | |
CN2636138Y (zh) * | 2003-08-18 | 2004-08-25 | 蔡镜波 | 一种超声波加湿器 |
CN201335506Y (zh) * | 2008-11-19 | 2009-10-28 | 郭金林 | 空调过滤器一体式消音器 |
CN201731584U (zh) * | 2010-07-22 | 2011-02-02 | 莱克电气股份有限公司 | 具有消音装置的加湿器 |
FR3003775B1 (fr) * | 2013-03-26 | 2015-03-20 | Peugeot Citroen Automobiles Sa | Dispositif de nebulisation compact a reservoir de liquide separe de la chambre de nebulisation |
FR3004971B1 (fr) * | 2013-04-30 | 2015-04-03 | Areco Finances Et Technologie Arfitec | Systeme de nebulisation pour rafraichir l'air |
CN104422034A (zh) * | 2013-08-28 | 2015-03-18 | 珠海格力电器股份有限公司 | 一种空气净化器 |
FR3023735B1 (fr) * | 2014-07-17 | 2016-07-29 | Areco Finances Et Tech - Arfitec | Nebuliseur compact pour rafraichir l'air |
FR3054808B1 (fr) * | 2016-08-04 | 2019-08-02 | Valeo Systemes Thermiques | Systeme de nebulation pour vehicule automobile |
FR3058932A1 (fr) * | 2016-08-04 | 2018-05-25 | Valeo Systemes Thermiques | Systeme de nebulation pour vehicule automobile |
-
2019
- 2019-04-24 FR FR1904294A patent/FR3095375A1/fr active Pending
-
2020
- 2020-02-11 CN CN202080030559.2A patent/CN113748034A/zh active Pending
- 2020-02-11 WO PCT/FR2020/050244 patent/WO2020217012A1/fr unknown
- 2020-02-11 EP EP20709650.4A patent/EP3959091A1/de active Pending
- 2020-02-11 US US17/605,359 patent/US20220185076A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20220185076A1 (en) | 2022-06-16 |
CN113748034A (zh) | 2021-12-03 |
WO2020217012A1 (fr) | 2020-10-29 |
FR3095375A1 (fr) | 2020-10-30 |
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