# US 2021/0277818 A1 · Ventilation device for a motor vehicle

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- Number: US 2021/0277818 A1
- Document ID: US20210277818A1
- Status: Published application
- Kind: A1
- Application number: 17/255,737
- Filed: 2019-06-24
- Published: 2021-09-09
- Earliest claimed: 2018-06-26
- Assignees: Valeo Systemes Thermiques
- Applicants: Valeo Systemes Thermiques
- Inventors: Michael Lissner; Amrid Mammeri; Kamel Azzouz; Farid Bakir; Sofiane Khelladi; Ivan Dobrev
- Web page: https://patentgrep.com/patent/US20210277818A1

## CPC

- F01P 5/02: Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P 7/02: the coolant being cooling-air
- B60K 11/04: Arrangement or mounting of radiators, radiator shutters, or radiator blinds
- F01P 5/06: Guiding or ducting air to, or from, ducted fans
- F04D 17/04: of transverse-flow type
- F04D 25/08: the working fluid being air, e.g. for ventilation
- F04D 29/283: {rotors of the squirrel-cage type}
- F04D 29/422: {Discharge tongues (F04D17/04 takes precedence)}
- F04F 5/16: displacing elastic fluids
- F04F 5/46: Arrangements of nozzles
- F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28)
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F04F: PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED {(evacuating by sorption F04B)}; SIPHONS {(conveying materials in bulk by flows of gas, liquid of foam B65G53/00)}

## Abstract

The invention relates to a ventilation device for a motor vehicle, comprising at least one manifold (5-1, 5-2) for distributing air to the tubes (3), at least one turbomachine (26) being arranged in said at least one manifold (5-1, 5-2), said at least one turbomachine (26) comprising a cross-flow fan (26), said at least one manifold (5-1, 5-2) forming a volute (30) of the cross-flow fan (26).

## Claims

### Claim 1

A ventilation device for a motor vehicle, comprising:
at least one manifold for distributing air to tubes of a heat exchanger of the motor vehicle;
at least one turbomachine being arranged in said at least one manifold,
said at least one turbomachine comprising a cross-flow fan,
said at least one manifold forming a volute of the cross-flow fan.

### Claim 2 (depends on 1)

The device as claimed in claim 1, wherein the volute comprises an air inlet into the manifold through which an air flow can be drawn by the cross-flow fan, and an air outlet through which the air flow drawn in can be distributed to the tubes,
the tubes extending parallel to a longitudinal direction of the tubes, called the longitudinal direction, the cross-flow fan extending in a direction orthogonal to the longitudinal direction, called the intake direction, another direction, called the direction of advance, orthogonal to the longitudinal direction and the intake direction, coinciding with a direction of advance of the vehicle when the ventilation device is installed in the vehicle.

### Claim 3 (depends on 2)

The device as claimed in claim 2, wherein the air inlet comprises a first inlet wall at an angle of between 40° and 75° to said longitudinal direction.

### Claim 4 (depends on 2)

The device as claimed in claim 2, wherein one end of the first wall opposed to the air inlet is curved in a plane containing the longitudinal direction and the direction of advance, a length of this end being between 1 mm and 8 mm, and a minimum distance between said end and a disk delimited by the cross-flow fan in said plane is between 0.5 mm and 1.5 mm.

### Claim 5 (depends on 3)

The device as claimed in claim 3, wherein the air inlet comprises a second inlet wall, said second wall comprising a rounded edge shaped so that its curvature in a plane containing the longitudinal direction and the direction of advance is an arc of a circle whose center is located on a concentric circle of a disk delimited by the cross-flow fan in said plane.

### Claim 6 (depends on 2)

The device as claimed in claim 2, further comprising a part forming a junction of the air inlet of the volute and the air outlet of the volute, called the intermediate part, shaped to house the cross-flow fan.

### Claim 7 (depends on 6)

The device as claimed in claim 6, wherein said intermediate part comprises a wall, called the intermediate wall, curved along an arc of a circle in a plane containing the longitudinal direction and the direction of advance, said arc of a circle having a center distinct from the center of a disk delimited by the cross-flow fan in said plane.

### Claim 8 (depends on 7)

The device as claimed in claim 7, wherein a distance between the center of the intermediate wall and the center of the disk is smaller than or equal to the value of the radius of the disk.

### Claim 9 (depends on 6)

The device as claimed in claim 6, wherein a section of the intermediate part at an interface between the intermediate part and the air outlet is at an angle a non-zero angle, to the longitudinal direction within the range [0° 20].

### Claim 10 (depends on 1)

The device as claimed in claim 1, wherein the cross-flow fan is capable of creating an air flow with a flow rate of between 0 and 750 m3/h and a pressure of between 0 and 900 Pa, the cross-flow fan comprising a rotor whose rotation speed is between 2000 r.p.m. and 13,000 r.p.m.

### Claim 11

A ventilation device for a motor vehicle, comprising:
at least one manifold for distributing air to a plurality of tubes of a heat exchanger,
at least one turbomachine being arranged in said at least one manifold and comprising a cross-flow fan;
said at least one manifold forming a volute of the cross-flow fan,
wherein the plurality of tubes of the ventilation device are disposed facing low heat exchange areas of the heat exchanger, thereby limiting obstruction of the air flow toward the heat exchanger.

### Claim 12 (depends on 11)

The ventilation device of claim 11, wherein the plurality of tubes are disposed in front faces of the tubes through which the heat transfer fluid passes, which are not in contact with cooling fins.