Ventilation enclosure with protective screen comprising at least one opening and means for protecting the opening

Abstract

Ventilation housing with protective screen comprising at least one opening and means for protecting the opening. The invention relates to a ventilation housing (1) comprising: a ventilation nozzle (2) which includes a ventilation propeller housing (3) configured to receive a ventilation propeller, the ventilation nozzle (2) having a motor housing (4) configured to receive a fan motor (40) and a protective screen (5) assembled on the ventilation nozzle (2) so as to cover the motor housing (4) in a direction parallel to an axis of rotation (X) of the ventilation propeller, the protective screen (5) being configured to protect the motor (40) from the heat of splashes and / or projectiles, the protective screen (5) comprising at least one opening (6) configured to allow the heat generated by the fan motor (40) to escape.characterized in that the protective screen (5) comprises protective means (7) configured to partially cover at least one opening (6), the protective means (7) being integral with the protective screen (5) and in that the protective screen (5) is produced of metallic material, preferably an aluminum alloy. [Figure 1]

Description

Title of the invention: Ventilation housing with protective screen comprising at least one opening and means for protecting the opening Technical field

[0001] The present invention relates to the technical field of fans for motor vehicles. More particularly, the present invention relates to the technical field of fans for motor vehicles with a protective screen for the fan motor, in particular thermal protection. Prior art

[0002] A fan for motor vehicles typically comprises a housing which is often reduced to a ventilation nozzle, a ventilation propeller and a motor. The ventilation propeller and the motor are housed in the ventilation nozzle. In particular, the motor is housed in a motor housing covered on one side by the ventilation nozzle. The ventilation nozzle is typically made of plastic, on which the motor is fixed.

[0003] Such a fan may be provided in various parts of the motor vehicle. Thus, it may be subjected to various environments. In some of these environments, it is important to protect the engine from heat emanating, by radiation, from other elements of the motor vehicle. Also, it is sometimes necessary to protect the engine from projections of liquid such as water, or projectiles such as gravel.

[0004] For this, a thermal protection and / or anti-splash screen is typically provided.

[0005] It is known in the art to provide a thermal protection screen of a propeller motor with openings for cooling the propeller motor. However, these openings do not provide sufficient protection for this motor from splashes and projectiles and also reduce protection against thermal radiation. To correct these drawbacks, the state of the art provides an additional screen between the thermal protection screen and the propeller motor, this additional screen also having openings but which are not arranged opposite the openings of the thermal protection screen. In order to allow air to circulate between these two screens, it is necessary to space them apart from each other.This technique has the following disadvantages, namely that the ventilation box includes several parts to only perform the protection function and due to the necessary spacing between the screens, the size of the ventilation box is greater. Statement of the invention

[0006] An objective of the present invention is to remedy the drawbacks of the state of the art presented above. For this, the present invention proposes a ventilation housing comprising: - a ventilation nozzle which comprises a ventilation propeller housing configured to receive a ventilation propeller, the ventilation nozzle having a motor housing configured to receive a fan motor and - a protective screen assembled on the ventilation nozzle so as to cover the motor housing in a direction parallel to an axis of rotation X of the ventilation propeller, the protective screen being configured to protect the motor from heat from splashes and / or projectiles, the protective screen comprising at least one opening configured to allow the heat generated by the fan motor to escape, characterized in that the protective screen comprises protective means configured to partially cover the at least one opening, the protective means being integral with the protective screen and in that the protective screen is produced from metallic material, preferably an aluminum alloy.

[0007] Being made of material, the protective screen allows on its own and without additional parts to fulfill the protective function while allowing ventilation of the fan motor.

[0008] The aluminum alloy has the particular advantage of protecting the electronic components of the propeller propulsion motor from electromagnetic disturbances.

[0009] According to one aspect of the invention, the protective screen directly covers the motor housing. It is thus understood that between the protective screen and the motor, there are no interposed elements.

[0010] According to one aspect of the invention, the at least one opening is arranged axially to the axis of rotation X of the ventilation propeller.

[0011] According to one aspect of the invention and according to an alternative, the at least one opening is arranged radially to the axis of rotation X of the ventilation propeller.

[0012] According to one aspect of the invention, the protection means are arranged opposite the opening and from a border linked to the opening.

[0013] According to one aspect of the invention, the protection means extend in a direction opposite to the motor housing.

[0014] According to one aspect of the invention and according to an alternative, the protection means extend towards the motor housing.

[0015] According to one aspect of the invention, the protection means comprise a blade for the at least one opening, said blade comprising a free edge and said edge linked to the protective screen.

[0016] According to one aspect of the invention, the protective screen comprises a flat area, the at least one opening being arranged in said flat area.

[0017] According to one aspect of the invention, the blade is of generally flat shape and oriented relative to the flat area at an angle of between 15° and 90°.

[0018] According to one aspect of the invention, the free edge being longer than the tied edge.

[0019] According to one aspect of the invention and according to an alternative, the linked border being longer than the free border.

[0020] According to one aspect of the invention, the protective screen comprises a peripheral wall extending from a contour of the flat area towards the motor housing, the at least one opening being arranged on the peripheral wall.

[0021] According to one aspect of the invention, the blade has mainly a parallelogram or trapezoidal shape, preferably rectangular.

[0022] According to one aspect of the invention and according to an alternative, the blade has mainly a rounded shape, preferably disc-shaped or oval-shaped. Brief description of the drawings

[0023] Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below for information purposes in relation to drawings in which: [Fig.l] [Fig.l] is a schematic perspective representation of the ventilation housing according to an example of the invention; [Fig.2] [Fig.2] is a sectional view of the ventilation housing of [Fig.l]; [Fig.3] [Fig.3] is a representation of the protective screen alone, according to an example of the invention.

[0024] It should first be noted that although the figures set out the invention in detail for its implementation, these figures can of course be used to better define the invention where appropriate. It should also be noted that these figures only set out a few examples of embodiments of the invention. Detailed description

[0025] [Fig.l] illustrates a ventilation box 1 according to the invention. This ventilation box 1 comprises: - a ventilation nozzle 2 which comprises a ventilation propeller housing 3 configured to receive a ventilation propeller, the ventilation nozzle 2 having a motor housing 4 configured to receive a fan motor 40 and - a protective screen 5 assembled on the ventilation nozzle 2 so as to cover the motor housing 4 in a direction parallel to an axis of rotation X of the ventilation propeller, the protective screen 5 being configured to protect the motor 40 from the heat of splashes and / or projectiles, the protective screen 5 comprising at least one opening 6 configured to let out the heat generated by the fan motor 40, characterized in that the protective screen 5 comprises protective means 7 configured to partially cover the at least one opening 6, the protective means 7 being integral with the protective screen 5 and in that the protective screen 5 is produced from metallic material, preferably an aluminum alloy.

[0026] Being made of one material, the protective screen 5 allows, on its own and without additional parts, to fulfill the protective function while allowing ventilation of the fan motor 40.

[0027] The aluminum alloy has the particular advantage of protecting the electronic components of the propeller propulsion motor 40 from electromagnetic disturbances.

[0028] The protective screen 5 directly covers the motor housing 4. It is thus understood that between the protective screen 5 and the motor 40, there are no interposed elements.

[0029] The protective screen 7, in order to function properly, requires that the fan motor 40 be completely or almost completely protected.

[0030] The at least one opening 6 is arranged axially to the axis of rotation X of the ventilation propeller.

[0031] According to an alternative not illustrated in the figures, the at least one opening 6 is arranged radially to the axis of rotation X of the ventilation propeller.

[0032] As is clearly visible in Figures 2 and 3, the protection means 7 are arranged opposite the opening 6 and from a border 72 linked to the opening 6.

[0033] The protection means 7 extend in a direction opposite to the motor housing 4.

[0034] Alternatively and in a manner not illustrated in the figures, the protection means 7 extend towards the motor housing 4.

[0035] As illustrated in the figures and particularly visible in figures 2 and 3, the protection means 7 comprise a blade 70 for the at least one opening 6, said blade 70 comprising a free edge 71 and said edge linked 72 to the protection screen 5.

[0036] The protective screen 5 comprises a flat area 50, the at least one opening 6 being arranged in said flat area 50.

[0037] The blade 70 is generally flat in shape and oriented relative to the flat zone 50 at an angle of between 15° and 90°.

[0038] The blade 70 is preferably produced by stamping.

[0039] The blade 70 is oriented downwards. It is thus understood that the free edge 71 of the blade 70 is positioned below the edge linked 72 to the protective screen 5 in a vertical direction when the protective screen 5 is mounted on the ventilation nozzle 2.

[0040] The free edge 71 being longer than the linked edge 72 or alternatively the linked edge 72 can be longer than the free edge 71.

[0041] According to a variant not illustrated in the figures, the protective screen 5 comprises a peripheral wall extending from a contour of the flat zone 50 in the direction of the housing of the motor 4, the at least one opening 6 being arranged on the peripheral wall.

[0042] According to the figures, the blade 70 has mainly a parallelogram or trapezoidal shape, preferably rectangular, however it is possible that the blade 70 has mainly a rounded shape, preferably disc or oval.

[0043] The protective screen 5 comprises a plurality of openings 6, each of the openings 6 having the characteristics previously described and protection means 7 for each of these openings 6 which form a plurality of protection means 7.

[0044] In the examples illustrated in the present invention, the protection means 7 are oriented in the same direction. However, it is entirely conceivable that the plurality of protection means 7 comprise at least two protection means 7 oriented in different directions.

[0045] In the figures of the present invention, the plurality of protection means 7 is inscribed in a rectangular zone 53. It is however possible for it to be inscribed in a circular zone, in order for example to conform more closely to a protection screen 7 of mainly disc shape.

[0046] In the present invention, the protective screen 7 is fixed to the ventilation nozzle 2 by at least one tab 54, preferably two tabs 54, in connection with a stop 55, arranged on one side of the protective screen 5 and coupled with at least one latching means 56 arranged on another side of the protective screen 5. This device for fixing the protective screen to the nozzle, comprising the at least one tab 54, the stop 55 and the latching means 56, can be completed by a positioning finger preferably arranged on the nozzle 2 and inserted into a positioning orifice, preferably arranged on the protective screen 5. It is nevertheless possible to use any other fixing device known to those skilled in the art.

Claims

Claims

1. A ventilation housing (1) comprising: - a ventilation nozzle (2) which comprises a ventilation propeller housing (3) configured to receive a ventilation propeller, the ventilation nozzle (2) having a motor housing (4) configured to receive a fan motor (40) and - a protective screen (5) assembled on the ventilation nozzle (2) so as to cover the motor housing (4) in a direction parallel to an axis of rotation (X) of the ventilation propeller, the protective screen (5) being configured to protect the motor (40) from heat from splashes and / or projectiles, the protective screen (5) comprising at least one opening (6) configured to allow the heat generated by the fan motor (40) to escape, characterized in that the protective screen (5) comprises protective means (7) configured to partially cover the at least one opening (6),the protective means (7) being integral with the protective screen (5) and in that the protective screen (5) is produced from metallic material, preferably an aluminum alloy.,

2. Ventilation housing (1) according to the preceding claim, wherein the protective screen (5) directly covers the motor housing (4).

3. Ventilation housing (1) according to any one of the preceding claims, in which the protection means (7) are arranged opposite the opening (6) and from a border linked (72) to the opening (6).

4. Ventilation box (1) according to the preceding claim, wherein the protection means (7) comprise a blade (70) for the at least one opening (6), said blade (70) comprising a free edge (71) and said edge linked (72) to the protection screen (5).

5. Ventilation housing (1) according to any one of the preceding claims, wherein the protective screen (5) comprises a flat area (50), the at least one opening (6) being arranged in said flat area (50).

6. Ventilation housing (1) according to claims 4 and 5, in which the blade (70) is of generally planar shape and oriented relative to the planar zone (50) at an angle of between 15° and 90°.

7. Ventilation housing (1) according to claim 4, wherein the free edge (71) is longer than the bound edge (72).

8. A ventilation housing (1) according to claim 4, wherein the bound edge (72) is longer than the free edge (71).

9. A ventilation housing (1) according to claim 5, wherein the protective screen (5) comprises a peripheral wall extending from a contour of the flat area (50) towards the motor housing (4), the at least one opening (6) being arranged on the peripheral wall.

10. A ventilation housing (1) according to any preceding claim in combination with claim 4, wherein the blade (70) has a predominantly parallelogram or trapezoidal shape, preferably rectangular.

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