DE102020002486A1 - Ventilation device for a cabin of a vehicle - Google Patents

Abstract

The invention relates to a ventilation device (10) for a cabin (102) of a vehicle (100), with an air delivery device (22) for supplying air from a position at a distance from a passenger to a cabin heat exchanger (16) and then to the passenger to convey, an air supply line (20) in order to supply air to supply the passengers of the cabin (102), and at least one outflow device (32) which has at least one outflow opening (36) to remove air from the air - To allow the supply line (20) to flow out to a passenger, and comprises at least one air-directing device (38a, 38b) which directs air emerging from the outflow opening (36), the air-directing device (38a, 38b) being a corrugated Coanda profile (42) in order to guide air emerging from the outflow opening (36) along a cabin wall, the outflow device (32) can be operated in at least two different operating states, and d outflowing air in the two operating states is subject to the influence of the Coanda profile (42) to a different extent.

Description

The present invention relates to a ventilation device for a cabin of a vehicle according to the preamble of claim 1.

The invention also relates to a vehicle according to the preamble of claim 14.

It is known to ventilate vehicles through air nozzles on the headliner. The cooling of air for vehicle cabins is also known.

In practice, there is the problem that the specification of a flow direction for the air exiting an outflow opening and introduced into the cabin of the vehicle has previously required ventilating devices that are complex in terms of design. Corresponding ventilation devices often have high manufacturing costs due to their complexity and / or are comparatively susceptible to damage due to their construction. Ventilation devices of simple construction usually have no or only extremely limited adjustment options for directing the air flow.

The object on which the invention is based is thus to improve the air flow in the cabin of a vehicle.

The object is achieved by a ventilation device of the type mentioned at the outset, the air directing device having a corrugated Coanda profile in order to guide air emerging from the outflow opening along a cabin wall, the outflow device being operable in at least two different operating states and outflowing air is subject to the influence of the Coanda profile to a different extent in the two operating states.

The ventilation device according to the invention can furthermore have a plurality of outflow devices, with at least one individual outflow device preferably being assigned to each passenger and being arranged in his vicinity. The outflow opening is preferably round or rectangular. The shape of the outflow opening is preferably adapted to the geometry of the air guidance device so that the interaction is improved.

In a further development of the ventilation device according to the invention, the outflow device and / or its outflow opening is arranged above the head height of the passenger and / or to the side of the head of the passenger. The outflow device and / or its outflow opening preferably extends along the center line of the vehicle or the cabin. Alternatively, the outflow opening is arranged in the vicinity of the vehicle center line.

The outflowing air is preferably directed at least in one operating state of the outflow device onto the passenger or the window assigned to him. This makes it possible to optimally care for an individual passenger without influencing neighboring passengers. The outflow opening is preferably assigned at least one air control device.

In another embodiment of the ventilation device according to the invention, the outflow device is designed to divert air emerging from the outflow opening uniformly in one direction and / or to align air emerging from the outflow opening more evenly in one direction in order to avoid turbulence.

The ventilation device according to the invention is further developed advantageously in that a first air-directing device has an outlet nozzle which extends the outflow opening in a channel-like manner. The outlet connection preferably has a rectangular cross section. The channel-like extension of the outflow opening results in a uniformly aligned air flow.

In a further development of the ventilation device according to the invention, a second air-directing device has a corrugated Coanda profile, which is designed to divert an air flow emerging from the outflow opening from its original outflow direction using the Coanda effect. The air flow can thus spread along a wall of the cabin. This preferably results in a circulating cabin flow. This circulation preferably creates a circulation of air around the passenger. The axis of rotation of the circulation preferably lies along the longitudinal axis of the vehicle.

Preferably, at least two operating states can be set on the outflow device, in which the air flowing out of the outflow opening is subject to the influence of at least one of the two air-directing devices to different degrees. For example, the air-directing devices comprising the Coanda profile can have a comparatively large influence on the air flowing out of the outflow opening in a first operating state of the outflow device and in a second operating state of the outflow device a comparatively small influence on the air flowing out of the outflow device Have air flowing out of the outflow opening.

In another preferred embodiment of the ventilation device according to the invention, in an operating state of the outflow device, the air flowing out of the outflow opening is withdrawn from the influence of the Coanda profile. In this operating state there is therefore no deflection of the air flow emerging from the outflow opening by the Coanda profile.

A ventilation device according to the invention is also advantageous in which, in an operating state of the outflow device, the Coanda profile acts effectively on the air flowing out of the outflow opening. In this operating state, the air flow emerging from the outflow opening is thus deflected by the Coanda profile, the Coanda effect being used to deflect the air flow. The change between the operating state in which the air flowing out of the outflow opening is withdrawn from the influence of the Coanda profile and the operating state in which the Coanda profile effectively acts on the air flowing out of the outflow opening takes place by at least a movement or adjustment of at least one air steering device.

In a further preferred embodiment of the ventilation device according to the invention, the outflow opening has a clear cross section which has sizes that differ from one another in at least two operating states of the outflow device. As a result, a change in the speed of the outflowing air can be achieved with a constant air speed and constant volume flow. Preferably, in two different operating states of the outflow device, differing amounts of air emerge through the outflow opening. The change between the operating states takes place through at least one regulation movement.

In a further development of the ventilation device according to the invention, a change in the operating state of the outflow device can be brought about by moving, in particular pivoting, an air-directing device. To bring about a change in the operating state of the outflow device, an adjusting movement is preferably to be carried out on at least one air-directing device. The adjusting movement is preferably carried out simultaneously with the regulation movement, by means of which the speed of the air flow emerging from the outflow opening or its amount of air can be adjusted. This could be done by shifting or pivoting the components involved relative to one another.

A ventilation device according to the invention is also preferred in which the outflow device has a coupling section assigned to the air supply line, into which the supply air enters on its way along the air supply line, the coupling section being pivotable relative to the air supply line. The coupling section is elongated and has a largely round cross-section. An outlet connection is provided on the side of this coupling section. The outlet nozzle has a rectangular contour, the elongated side of which is aligned along the vehicle and a supply nozzle. The coupling area can preferably be pivoted around an axis in a specific angular range. This axis preferably runs essentially along the vehicle center axis.

In a particularly preferred embodiment of the ventilation device according to the invention, the outlet connection is directed towards the passenger in one operating state of the outflow device and pivoted away from the passenger in another operating state of the outflow device. In the operating state in which the outflow device is pivoted away from the passenger, air preferably emerges from the outlet nozzle along a vehicle wall or along the Coanda profile and / or the outflow opening lies directly on the Coanda profile or is on it aligned.

A ventilation device according to the invention is also advantageous in which part of the outflow opening on the outlet connection is covered by a cover in one operating state of the outflow device, which is not covered by the cover in another operating state of the outflow device. With a pivoting movement of the Coanda profile, part of the outflow opening on the outlet connector is preferably covered by a cover at the same time. As a result, the Coanda profile is centered on the original outflow opening and on the edge of the remaining opening. The cover can be a movable part on the outlet nozzle. The cover is preferably a nose assigned to the Coanda profile.

In a further embodiment of the ventilation device according to the invention, it comprises a temperature control circuit, at least one ambient heat exchanger, a cabin heat exchanger and / or one or more liquid channels. A fluid for heat transport circulates in the temperature control circuit. Heat is exchanged between the temperature control circuit and a cabin environment via the at least one ambient heat exchanger. Via the cabin heat exchanger, heat is transferred between the temperature control circuit and the one provided for ventilation of the cabin Airflow exchanged. The one or more liquid channels connect the ambient heat exchanger to the cabin heat exchanger in order to enable a circulation of liquid between the ambient heat exchanger and the cabin heat exchanger.

A fluid circulates as a heat transfer medium in the temperature control circuit.

The ventilation device can have one or more ambient heat exchangers, via which heat can be exchanged between the temperature control circuit and a cabin environment. The temperature control circuit is preferably a closed system. A pump is preferably present in the temperature control circuit in order to pump the fluid forward in the circuit and to cause the fluid to circulate in the temperature control circuit.

The ventilation device is preferably set up to be operated in a heating mode and / or in a cooling mode. In the heating mode, the supply air is heated before it is discharged into the vehicle cabin. In the cooling mode, the supply air is cooled before it is discharged into the vehicle cabin. The ventilation device is preferably set up to heat or cool the supply air as required by means of the temperature control circuit.

In a preferred embodiment of the ventilation device according to the invention, the air delivery device is arranged in the trunk or in the rear of the vehicle. This effectively prevents the passengers from being disturbed by the operation of the air conveying device. The comfort of the passengers is not impaired by vibrations or noise from the air conveying device.

In a further embodiment of the ventilation device according to the invention, the air delivery device is designed as a radial fan.

The ventilation device according to the invention is furthermore advantageously developed in that the fluid circulating in the temperature control circuit is a liquid. Because the fluid is a liquid, a comparatively large amount of heat can be introduced into the supply air on the liquid side of the cabin heat exchanger and can be removed or removed from the supply air. The fluid preferably consists of at least 90% water. It preferably contains anti-freeze as an admixture.

A ventilation device according to the invention is also advantageous in which the ambient heat exchanger is an air-liquid heat exchanger or an evaporator. A cooler through which air flows or a cooling unit that works with compressed air or evaporation is preferably provided on the ambient heat exchanger, via which the temperature control circuit can be cooled in summer.

In another preferred embodiment of the ventilation device according to the invention, a further ambient heat exchanger of the ventilation device is a liquid-liquid heat exchanger. A supply and discharge line for an engine cooling circuit, via which the temperature control circuit can be supplied with heat in winter, is preferably provided on this ambient heat exchanger.

If the available installation space is limited, the functions of the first and second ambient heat exchangers can also be taken over by a single heat exchanger.

In a further development, the ventilation device according to the invention has an outflow device via which the supply air, which is tempered in the cabin heat exchanger, is fed to a passenger, the outflow device having at least one outflow opening to allow air to flow out to a passenger. The outflow device preferably has at least one air directing device which directs the air emerging from the outflow opening.

The object on which the invention is based is also achieved by a vehicle of the type mentioned at the beginning, the ventilation device of the vehicle according to the invention being designed according to one of the embodiments described above. With regard to the advantages and modifications of the vehicle according to the invention, reference is made to the advantages and modifications of the ventilation device according to the invention.

• 1 eine schematische Ansicht eines erfindungsgemäßen Fahrzeuges mit Fluidleitung zur temperierten Belüftung einer Fahrzeug-Kabine;
• 2a eine perspektivische Ansicht eines Luft-Ausströmers in ausgeklappter Position;
• 2b einen Querschnitt des Luft-Ausströmers aus der 2a in ausgeklappter Position;
• 2c eine perspektivische Ansicht des Luft-Ausströmers aus der 2a in eingeklappter Position; und
• 2d einen Querschnitt des Luft-Ausströmers aus der 2a in eingeklappter Position.

Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings. Show:

• 1 a schematic view of a vehicle according to the invention with a fluid line for temperature-controlled ventilation of a vehicle cabin;
• 2a a perspective view of an air vent in the unfolded position;
• 2 B a cross-section of the air vent from FIG 2a in the unfolded position;
• 2c FIG. 3 is a perspective view of the air vent from FIG 2a in folded position; and
• 2d a cross-section of the air vent from FIG 2a in the folded position.

The 1 shows a vehicle 100 with a ventilation device 10 for the cabin 102 of the vehicle 100 .

The ventilation device 10 comprises a temperature control circuit in which a fluid for heat transport circulates, and an ambient heat exchanger, via which heat is exchanged between the temperature control circuit and a cabin environment. Furthermore, the ventilation device comprises a cabin heat exchanger 16 , via which heat is exchanged between the temperature control circuit and an air flow provided for ventilation of the cabin, and fluid channels that connect the ambient heat exchanger with the cabin heat exchanger 16 connect to a circulation of liquid between the ambient heat exchanger and the cabin heat exchanger 16 to enable.

These components are not shown in detail, as this is only intended to explain the background for the heat exchange with the environment.

It also includes the ventilation device 10 an air supply line 20th to supply air to the passengers in the cabin 102 the cabin heat exchanger 16 and an air conveyor 22nd to supply air from a position spaced from a passenger to the cabin heat exchanger 16 and then transported to the passenger.

The one in the cabin 102 The supply air to be introduced is heated or cooled as required. The supply air is taken from a location at a distance from the passengers, in this case the trunk. This is done by means of a radial fan, which is also arranged at a distance from the passengers in the trunk in order to avoid disturbing the passengers through vibrations and noise.

The one in the cabin 102 To be introduced supply air is through a supply channel of the air supply line 20th the cabin heat exchanger 16 fed in, tempered there and then via an outflow device 32 forwarded to a passenger.

Such an outflow device 32 is in the 2a to 2d shown. The outflow device 32 is above the head height of the passengers and to the side of the heads of the passengers, namely along the center line of the vehicle 100 or the cabin 102 , positioned.

Each passenger can also have an individual discharge device 32 be assigned, which is arranged in the vicinity of the respective passenger.

The outflow device 32 has an inflow opening 34 and an outflow opening 36 on. The inflow opening 34 is round. The outflow opening 36 is rectangular to be ideal with the air-directing device 38b to work together.

The outflow opening 36 exiting air flows in the direction of at least one passenger. This makes it possible to optimally care for an individual passenger without influencing neighboring passengers.

The outflow opening 36 is the air-directing devices 38a , 38b assigned to the outflow opening 36 Divert escaping air evenly in a desired direction and avoid turbulence. The air steering device 38a has an outlet nozzle 40 on. The outlet port 40 has a rectangular cross-section and extends the discharge opening 36 channel-like. This achieves the outlet nozzle 40 an evenly directed air flow.

The air steering device 38b has a wavy Coanda profile 42 on. It is designed to take one out of the discharge opening 36 to divert exiting air flow from its original outflow direction using the Coanda effect, so that it extends along a wall of the cabin 102 can spread. This results in a circulating cabin flow. This circulation creates an air circulation around the passenger, the axis of rotation of the circulation running along the longitudinal axis of the vehicle.

There are two operating states on the outflow device 32 intended. An operating state is in the 2a and 2 B shown. The other operating state is in the 2c and 2d shown. In the two operating states, the outflowing air is subject to the influence of the air control devices 38a , 38b different degrees.

In the in the 2a and 2 B operating state of the outflow device shown 32 the air flowing out of the outlet opening is influenced by the Coanda profile 42 withdrawn. In the in the 2c and 2d operating state of the outflow device shown 32 the Coanda profile works 42 effectively on the outflowing air. The change between these two operating states takes place by pivoting the Coanda profile 42 .

The outflow opening 36 has a clear cross-section, which has a different size in the two operating states. As a result, a change in the speed of the outflowing air can be achieved with a constant air speed and constant volume flow.

The outflow device 32 has an air supply line 20th associated coupling section into which the supply air on its way along the air supply line 20th entry. The coupling section is elongated and has a largely round cross-section. The coupling section is pivotable relative to the air supply line 20th arranged. It can pivot a certain angular range around an axis which also runs essentially along the vehicle center axis. This allows the outlet nozzle 40 be aimed at the passenger in an operating state. In another operating state, the outlet connection 40 be swiveled away from the passenger.

During the pivoting movement of the Coanda profile 42 becomes part of the outflow opening at the same time 36 at the outlet port 40 covered by a cover. The cover is one of the Coanda profile 42 assigned nose 44 .

List of reference symbols

10

Ventilation device

16

Cabin heat exchanger

20th

Air supply line

22nd

Air conveyor device

32

Outflow device

34

Inflow opening

36

Outflow opening

38a, 38b

Air directing devices

40

Outlet port

42

Coanda profile

44

nose

100

vehicle

102

cabin

Claims (13)

Ventilation device (10) for a cabin (102) of a vehicle (100), with - an air conveying device (22) to convey supply air from a position at a distance from a passenger to a cabin heat exchanger (16) and then to the passenger, - An air supply line (20) in order to supply air for supplying the passengers to the cabin (102), and - at least one outflow device (32) which has at least one outflow opening (36) to remove air from the air To allow the supply line (20) to flow out to a passenger, and at least one air-directing device (38a, 38b) which directs air emerging from the outflow opening (36), characterized in that the air-directing device (38a, 38b) has a corrugated Coanda profile (42) in order to guide air emerging from the outflow opening (36) along a cabin wall, the outflow device (32) can be operated in at least two different operating states, and air flowing out in the two operating states is subject to the influence of the Coanda profile (42) to a different extent from one another. Ventilation device (10) after Claim 1 , characterized in that the outflow device (32) and / or its outflow opening (36) is arranged above the head height of the passenger and / or to the side of the head of the passenger. Ventilation device (10) after Claim 1 or 2 , characterized in that the outflow device (32) is set up to divert air emerging from the outflow opening (36) uniformly in one direction and / or to align air emerging from the outflow opening (36) more uniformly in one direction, to avoid turbulence. Ventilation device (10) according to one of the preceding claims, characterized in that a first air-directing device (38a) has an outlet nozzle (40) which extends the outflow opening (36) like a channel. Ventilation device (10) according to one of the preceding claims, characterized in that a second air-directing device (38b) has a corrugated Coanda profile (42) which is designed to utilize an air flow emerging from the outflow opening (36) deflect the Coanda effect from its original outflow direction. Ventilation device (10) according to one of the preceding claims, characterized in that in an operating state of the outflow device (32) the air flowing out of the outflow opening (36) is withdrawn from the influence of the Coanda profile (42). Ventilation device (10) according to one of the preceding claims, characterized in that in an operating state of the outflow device (32) the Coanda profile (42) acts effectively on the air flowing out of the outflow opening (36). Ventilation device (10) according to one of the preceding claims, characterized in that the outflow opening (36) has a clear cross section which has sizes that differ from one another in at least two operating states of the outflow device (32). Ventilation device (10) according to one of the preceding claims, characterized in that a change in the operating state of the outflow device (32) can be brought about by moving, in particular pivoting, an air-directing device (38a, 38b). Ventilation device (10) according to one of the preceding claims, characterized in that the outflow device (32) has a coupling section assigned to the air supply line (20), into which the supply air enters on its way along the air supply line (20), wherein the coupling section is pivotable relative to the air supply line (20). Ventilation device (10) according to one of the Claims 4 to 10 , characterized in that the outlet connection (40) is directed towards the passenger in one operating state of the outflow device (32) and is pivoted away from the passenger in another operating state of the outflow device (32). Ventilation device (10) according to one of the Claims 4 to 11 , characterized in that part of the outflow opening (36) on the outlet connection (40) is covered by a cover in one operating state of the outflow device (32), which in another operating state of the outflow device (32) is not covered by the Cover is covered. Vehicle (100), with - a cabin (102); and - a ventilation device (10) for the cabin (102); characterized in that the ventilation device (10) is designed according to one of the preceding claims.

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