FR3028926A1 - AERATION DEVICE, IN PARTICULAR FOR A VEHICLE - Google Patents

Abstract

The invention relates to a ventilation device (10), in particular for a vehicle interior, comprising an aerator (20) and a main air duct (30) adapted to conduct a flow of air towards said aerator (20), said aerator (20) being adapted to regulate a passage of said air flow, said device (10) further comprising a nebulizer arranged to deliver microdrops of nebulized liquid into said air flow, said nebulizer comprising a means of putting under pressure (80) configured to pressurize said liquid and a dispensing means (23, 81) adapted to generate said microdroplets from said pressurized liquid, said dispensing (23, 81) and pressurizing means (80) being distant from each other.

Description

The invention relates to a ventilation device, in particular for a vehicle passenger compartment. The air cooling systems for a vehicle, in particular an automobile, most often incorporate an air conditioner to ensure the thermal comfort of the passengers positioned at the front and the rear, by establishing in the passenger compartment a temperature lower than the external temperature. . These systems ventilate cooled air so that they provide thermal comfort to the occupants of the vehicle. A first disadvantage of such systems is that the fresh air is dry. In addition, the seats at the rear of the cabin are often less well ventilated, so they are also less refreshed.

It should also be noted that not all vehicles are equipped with an air conditioner. To improve the situation, it has already been proposed to nebulize water in the cabin. The atomized water microdroplets are diffused with a flow of air so that they evaporate causing a lowering of temperature due to the latent heat of vaporization which is then absorbed. Such a solution makes it possible at least partially to overcome the absence of air conditioner or to improve the cooling of the passenger compartment when such an air conditioner is present but insufficient locally, by making available a flow of make-up air that can be directed by any point of the cockpit. It also helps to humidify the air.

An object of the invention to provide an aeration device for nebulizing a liquid, this in a limited space. Thus, the invention relates to a ventilation device, in particular for a vehicle cabin, comprising an aerator and a main air duct capable of conducting a flow of air towards said aerator, said aerator being designed to adjust a passage of said flow air. According to the invention said device further comprises a nebulizer arranged to deliver microdrops of nebulized liquid into said air flow, said nebulizer comprising a pressurizing means configured to pressurize said liquid and a dispensing means designed for generating said microdroplets from said pressurized liquid, said pressurizing and dispensing means being spaced apart from each other.

The device of the invention thus has a nebulizer in two parts, namely a part configured to put a liquid under pressure and another to generate microdrops from said pressurized liquid, which facilitates its integration. The portion configured to pressurize the liquid is advantageously located away from the aerator and / or that to distribute them, at the level of the aerator. This allows the discrete nebulization of said liquid in the direction of an external environment located downstream of said aerator. According to various embodiments of the invention, which may be taken together or separately: said pressurizing means is positioned behind said aerator and / or said dispensing means is positioned at said aerator, said means for pressurization is positioned outside the main air duct; the device of the invention further comprises a tube for conveying the pressurized liquid from said pressurizing means to said dispensing means; said tube passes through said duct; said tube is arranged to deliver said pressurized liquid directly at said aerator, said pressurizing means is a pump, in particular a hydraulic pump, said dispensing means is a nozzle, said aerator comprises one or more means for guiding said air flow, said guide means being a movable vane with respect to a base of said aerator, said vane being capable of integrating Rer said nozzle, - said dispensing means is a grid, in particular a nebulizing grid, the nozzle or the nebulization grid is placed at the level of the aerator, the nozzle or the nebulization grid is integrated into the aerator; aerator, the device of the invention comprises a liquid recovery means, said liquid recovery means is located upstream of said aerator, said liquid recovery means is able to prevent leakage of liquid to the liquid. the passenger compartment, said liquid recovery means is a rib integral with the main air duct, said liquid recovery means is a depression formed inside the main air duct, said means for recovering the liquid. liquid comprises a foam part, - said nebulizer comprises a liquid supply means, integrated or remote, - said liquid supply means is positioned upstream of the pressurizing means 15 ion, - said nebulizer is designed to deliver microdrops of liquid in a direction substantially coincident with a main axis of flow of said air flow, in the main air duct, - the device of the invention further comprises a a blower configured to generate said airflow in said duct; the aeration device further comprises an air intake for supplying said blower; said liquid is water; said liquid comprises perfume; Said liquid comprises essential oils, said liquid comprises an antimicrobial compound, said liquid is an antihistaminic compound. The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent from the following detailed explanatory description of at least one embodiment of the given invention. by way of purely illustrative and non-limiting example, with reference to the accompanying diagrammatic drawings: FIG. 1 is a cross-sectional view of an exemplary embodiment of the aeration device according to the invention, FIG. is a schematic representation illustrating in detail an example of an aerator of an aeration device according to the invention.

As illustrated in FIG. 1, the invention relates to a ventilation device 10 comprising an aerator 20 and a main air duct 30 able to conduct a flow of air towards said aerator 20. Said aerator 20 is designed to regulate a passage of said air flow.

In other words, said aerator 20 opens onto an external medium and is designed to allow the flow of air to flow to said external medium, especially in all or nothing mode; it may also be designed to regulate a flow rate of said air flow and / or allow to choose its orientation. The outside environment is here a vehicle interior, including automotive.

According to the invention said device 10 further comprises a nebulizer arranged to deliver microdrops of nebulized liquid into the air stream. The size of the drops of nebulized liquid can vary from micrometer to a few tens of micrometers. According to the invention, the nebulizer comprises a pressurizing means 80 configured to pressurize said liquid and a dispensing means 23, 81 adapted to generate said microdroplets from said pressurized liquid. In other words, said nebulizer comprises two parts 80, 23, 81, said two parts 80, 23, 81 being separate and spaced from each other.

It should be noted that said pressurizing means is preferably a pump 80, in particular a hydraulic pump. It should also be noted that said distribution means 23, 81 may be a nozzle 23 (see FIG. 2) or a grid, in particular a nebulizing grid 81 (see FIG. 1). Said nozzle 23 and / or said gate 81 are configured to generate said microdroplets from said pressurized liquid, for example, by a sudden expansion effect. On the other hand, said pump 80 is advantageously positioned recessed from said aerator 20. Said nozzle 23 or said grid 81 is positioned at the level of said aerator 20. In other words, neither of the two parts that comprise the nebulizer n ' is here positioned downstream of said aerator 20. It should be noted that the flow of air flows in the main air duct along a flow axis, called the main axis, and marked X in FIG. generating said air flow in said duct 30, the device of the invention preferably comprises a blower 50. To supply this blower 50, the aeration device 10 further comprises an air intake 51 located here under said blower 50.

As can be seen in FIG. 1, the pump 80 is positioned outside the main air duct 30. In other words, the pump 80 is offset from the duct 30 to be placed elsewhere in the ventilation device 10. The nozzle 23, or the nebulizing grid 81, is placed at the level of the aerator 20. More specifically, the nozzle 23, or the nebulizing grid 81, is integrated with the aerator 20.

Here, the aeration device 10 comprises a transport tube 43 of the pressurized liquid to the nozzle 23 or the nebulizing grid 81. Said tube 43 will advantageously be flexible in order not to limit the possibilities of integration within of the device 10 of the invention. For example, said tube 43 will pass through said conduit 30. It should be noted that said tube 43 is a tube configured to conduct the liquid under pressure. In other words, said pressurized liquid does not damage said tube 43 when it passes inside.

Advantageously, said aerator 20 comprises a guide means 21 for said air flow. This guide means 21 is able to orient the air flow, indicated by arrows F in FIG. 1, at the outlet of the device 10. Preferably, said guide means comprises a plurality of fins 21 that are movable relative to a base of said aerator 20.

FIG. 2 illustrates in detail an aerator according to the invention, said dispensing means being here a nozzle 23, integrated at the level of a movable fin of the aerator.

In this example, the fin 21 comprises a plurality of nozzles 23 designed to distribute said liquid microdrops, generated from the pressurized liquid from the tube 43. The liquid is thus pressurized upstream of said aerator 20, transported via the tube 43 to the fin 21, and delivered in the nebulized form 5 into the air flow by the nozzles 23 connected to the tube 43. The connection of the nozzles 23 to the tube 43 is done here by fine channels or capillaries provided in the fin 21. Said capillaries may be connected to a conduit located in an axis 22 for the orientation of said fin 21, said axis 22 being provided tubular.

It should also be noted that the device of the invention advantageously comprises a reservoir 60 of liquid which supplies said pump 80. The liquid supply of the nebulizer is in particular controlled by an electronic unit 70 preferably positioned in its vicinity. Said tank 60 is offset so as not to impede the flow of air flowing in the conduit 30, and so as to be accessible for reloading and / or replacement purposes. The reservoir 60 is intended to contain the liquid to be sprayed; that is, water that may include an antimicrobial compound, antihistamine, essential oils, or even perfume.

Here, the pump 80 may be directly at the outlet of said reservoir 60. On the other hand, the device of the invention 10 advantageously comprises a liquid recovery means 31 located upstream of said aerator 20. This recovery means 31 prevents any leakage of liquid to the passenger compartment.

This recovery means 31 may be a rib secured to the main air duct 30. It may also be a depression formed inside the main air duct 30. In an alternative not shown here, said recovery means 31 liquid comprises a foam portion to absorb any leakage of liquid. It should be noted that the device 10 of the invention is intended to be integrated inside a box, itself configured to be contained in a casing of the passenger compartment of a motor vehicle, preferably a ceiling of vehicle 3028926 7 automobile. Said housing is provided with a first orifice for the intake of air 51 and a second orifice accommodating said aerator 20.

Claims (12)

REVENDICATIONS1. Aeration device (10), in particular for a vehicle cabin, comprising an aerator (20) and a main air duct (30) adapted to conduct a flow of air towards said aerator (20), said aerator (20) being adapted to regulate a passage of said air flow, said device (10) further comprising a nebulizer arranged to deliver microdroplets of nebulized liquid into said air flow, said nebulizer comprising a pressurizing means (80) configured for putting said liquid under pressure and a dispensing means (23, 81) adapted to generate said microdroplets from said pressurized liquid, said dispensing (23, 81) and pressurizing means (80) being spaced apart from each other; the other. 2. Ventilation device (10) according to the preceding claim, wherein said pressurizing means (80) is set back from said aerator (20) and / or said dispensing means (23, 81) is positioned at said aerator (20). An aeration device (10) according to any one of claims 1 or 2, wherein said pressurizing means (80) is positioned out of the main air duct (30), said device comprising a vacuum tube conveying (43) pressurized liquid from said pressurizing means (80) to said dispensing means (23, 81). 4. Aeration device (10) according to the preceding claim, wherein said tube (43) passes through said conduit (30). 5. Aeration device (10) according to any one of claims 3 or 4, wherein said tube (43) is arranged to deliver said liquid under pressure directly at said aerator (20). An aeration device (10) according to any one of the preceding claims, wherein said pressurizing means (80) is a pump, in particular a hydraulic pump. 3028926 9 A ventilation device (10) according to any one of the preceding claims, wherein said dispensing means is a nozzle (23). 5 8. Ventilation device (10) according to the preceding claim, wherein said aerator (20) comprises a guide means (21) of said air flow, said guide means being a fin (21) movable relative to a base of said aerator (20), said fin (21) incorporating said nozzle (23). 10 9. Ventilation device (10) according to any one of claims 1 to 6, wherein said dispensing means is a grid (81), including a nebulizing grid. 10. Aeration device (10) according to any one of the preceding claims, comprising a liquid recovery means (31). An aeration device (10) according to any one of the preceding claims, wherein said nebulizer comprises a liquid supply means (60, 70), integrated or remote. 20 The aeration device (10) according to any one of the preceding claims, further comprising a blower (50) configured to generate said airflow in said duct (30).