CN219838624U - Hood and vehicle - Google Patents

Abstract

The utility model provides a hood and a vehicle; wherein, the aircraft bonnet is applied to the vehicle including the air conditioner, including aircraft bonnet planking and aircraft bonnet inner panel. The outer plate of the hood is provided with an air inlet; the air inlet is arranged at intervals with the tail end of the outer plate of the hood; and a ventilation flow passage is formed between the hood inner plate and the hood outer plate, one end of the ventilation flow passage is connected with the air inlet, and the other end of the ventilation flow passage is communicated with an air inlet passage of the air conditioner. The utility model can solve the problem that the NVH performance of the vehicle is seriously affected by large wind noise in the vehicle when the air conditioner of the existing vehicle is in external circulation.

Description

Hood and vehicle

Technical Field

The utility model relates to the technical field of vehicle noise reduction, in particular to a hood and a vehicle.

Background

Currently, the hood, front windshield and vent flap of a vehicle together form a recess having a complex structure inside. When the air flows on the surface of the vehicle body running at a high speed, not only the air flow separation occurs at the end of the hood, but also a turbulence with a high intensity is formed at the groove, thereby generating a strong pulsation noise.

When the air conditioner of the vehicle is in external circulation, the air flow at the tail end of the hood carries high-intensity pulsation noise to enter the passenger cabin through the ventilation cover plate, the air inlet channel of the air conditioner and the air box, so that the wind noise in the vehicle is increased sharply, and the NVH performance of the vehicle is seriously affected.

Disclosure of Invention

The utility model provides a hood and a vehicle, which can solve the problem that when an existing vehicle is in external circulation, the wind noise in the vehicle is large, and the NVH performance of the vehicle is seriously affected.

In a first aspect, the present utility model provides a hood for use with a vehicle including an air conditioner, comprising:

the air inlet is arranged at the tail end of the outer plate of the hood at intervals; and

And a ventilation flow passage is formed between the hood inner plate and the hood outer plate, one end of the ventilation flow passage is connected with the air inlet, and the other end of the ventilation flow passage is communicated with an air inlet passage of the air conditioner.

According to the technical scheme, the air inlet which is at the preset distance from the tail end of the air inlet is formed in the outer plate of the hood, so that air flow carrying low-intensity pulsation noise can be introduced into the ventilation flow channel when the air conditioner is in external circulation, and the ventilation flow channel between the inner plate of the hood and the outer plate of the hood is matched, so that the energy of noise carried by the air flow is further attenuated, the air flow with the attenuated noise energy sequentially passes through the air inlet channel and the air box of the air conditioner and finally enters the passenger cabin, and the wind noise of the passenger cabin is effectively reduced. Therefore, the problem that the NVH performance of the vehicle is seriously influenced due to the fact that the wind noise in the vehicle is large when the existing vehicle is in external circulation in the air conditioner can be solved through the scheme.

With reference to the first aspect, in some possible implementations, the ventilation channel includes:

the first end of the first channel is used for being communicated with an air inlet channel of the air conditioner;

the second channel is arranged at intervals with the first channel, and the first end of the second channel is connected with the air inlet;

and two ends of the third channel are respectively communicated with the second end of the first channel and the second end of the second channel.

In the technical scheme, in the ventilation flow passage process of the airflow, including the first channel, the second channel and the third channel, the ventilation flow passage can attenuate the energy of noise carried by the airflow, so that the wind noise of the passenger cabin is effectively reduced.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, an air outlet is provided on a side, close to the vehicle chassis, of the first channel; a circle of sealing soundproof cotton is arranged around the edge of the air outlet.

In the above technical scheme, the sealed soundproof cotton is used for sealing and soundproof the connection part of the air outlet of the first channel and the air inlet channel of the air conditioner.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the second channel is disposed obliquely with respect to the first channel, and a distance between a second end of the first channel and a second end of the second channel is smaller than a distance between a first end of the first channel and a first end of the second channel.

According to the technical scheme, when the airflow in the ventilation flow passage flows from the second passage to the third passage, the flow direction is suddenly changed to form turbulence, and extra noise is generated.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, a cross-sectional flow area of the first channel is larger than a cross-sectional flow area of the second channel.

In the technical scheme, the flow cross section of the first channel is set to be larger than the flow cross section of the second channel, so that the flow velocity of the air flow in the second channel is reduced after the air flow enters the first channel, the energy of noise carried by the air flow is further attenuated, and the wind noise of the passenger cabin is reduced.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a connection portion between the third channel and the first channel and a connection portion between the third channel and the second channel are in a transition through a rounded corner.

By means of the technical scheme, the air flow in the ventilation flow channel can more smoothly pass through the connection part of the third channel, the first channel and the second channel, and extra noise is avoided.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the number of the second channels is at least two, and at least two second channels are located at two sides of the first channel.

In the technical scheme, the plurality of second channels are respectively arranged at the two sides of the first channel, so that the balance of the air flow flowing into the first channel from the second channels is facilitated, and the design and the manufacture of the ventilation flow channel are facilitated.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, an inner wall of the ventilation channel is provided with sound-absorbing cotton.

In the technical scheme, the sound absorbing cotton is arranged on the inner wall of the ventilation flow channel to attenuate the energy of noise carried by air flow, so that the wind noise of the passenger cabin is further reduced.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the hood further includes a cover plate disposed at the air inlet, and the cover plate is provided with a plurality of through holes.

In the technical scheme, the cover plate provided with the through hole is buckled on the air inlet, so that the probability that foreign matters such as dust, fallen leaves, mosquitoes enter the passenger cabin through the ventilation flow passage can be reduced.

In a second aspect, the utility model also provides a vehicle comprising a hood according to any one of the first aspects.

Drawings

FIG. 1 is a schematic view of a hood according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the hood of FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view of the vent flow channel of FIG. 1;

fig. 4 is a schematic view of the structure of the cover plate in the hood of fig. 1.

The reference numerals in the drawings are explained as follows:

01-an air inlet channel of the air conditioner;

1-hood outer panel; 11-an air inlet;

2-a ventilation flow channel; 20-sound-absorbing cotton;

21-a first channel; 211-sealing soundproof cotton;

22-a second channel;

23-a third channel;

3-cover plate; 31-through holes.

Detailed Description

The technical scheme of the utility model will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present utility model, unless otherwise indicated, "/" means or, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present utility model, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the related art, when an air conditioner of a vehicle is in an external circulation, air flow at the tail end of a hood carries high-intensity pulsation noise to enter the interior of a passenger cabin through a ventilation cover plate and an air inlet channel of the air conditioner and a fan box, so that the wind noise in the vehicle is increased sharply, and the NVH (Noise, vibration, harshness noise, vibration and harshness) performance of the vehicle is seriously affected.

In order to solve the technical problems, the embodiment of the utility model provides a hood and a vehicle. A hood according to an embodiment of the present utility model will be described in detail with reference to the drawings.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a hood according to an embodiment of the present utility model, and fig. 2 is a schematic structural view of the hood of fig. 1 at another view angle.

First, the hood provided by the first aspect of the utility model is applied to a vehicle comprising an air conditioner, and the hood is matched with an air inlet channel and an air box of the air conditioner, so that when the air conditioner is in external circulation, the noise of the air in the vehicle can be effectively controlled, and the NVH performance of the vehicle is improved.

The hood is described in detail below with reference to fig. 1 and 2. The hood includes a hood outer panel 1 and a hood inner panel. The hood outer plate 1 is provided with an air inlet 11, and the air inlet 11 is arranged at intervals with the tail end of the hood outer plate 1. The hood outer panel 1 and the hood inner panel may be made of sheet metal or titanium alloy. The air inlet 11 can be formed very conveniently by cutting and punching the hood outer panel 1. The end of the hood outer panel 1, i.e., the end of the hood outer panel 1 that is close to the vehicle wind deflector. The air inlet 11 is spaced from the end of the hood outer panel 1, that is, the air inlet 11 is spaced from the end of the hood outer panel 1 by a predetermined length. The cross-sectional shape of the air inlet 11 may be quadrangular, circular, elliptical, etc., and the length dimension may be 100mm to 200mm, specifically 100mm, 150mm, 200mm, etc., and the width dimension may be 20mm to 50mm, specifically 20mm, 30mm, 50mm, etc., for an air inlet 11 having a rectangular cross-sectional shape.

The cross section of the air inlet 11 is not particularly limited in the embodiment of the utility model, and a designer can reasonably design the air inlet 11 according to different vehicle types.

A ventilation flow passage 2 is formed between the hood inner plate and the hood outer plate 1, one end of the ventilation flow passage 2 is connected with the air inlet 11, and the other end is communicated with an air inlet passage 01 of the air conditioner. The ventilation flow channel 2 guides the flow direction of the air flow, so that the air flow flows in from the air inlet 11, flows out from the air inlet channel 01 of the air conditioner, and sequentially enters the air conditioning bellows and the passenger cabin. The shape of the ventilation flow channel 2 can be L-shaped, U-shaped, S-shaped and the like; the construction forms can also be various, in one possible implementation, the ventilation flow passage 2 can be a hard or soft pipeline, in one possible implementation, the ventilation flow passage 2 can also be assembled by adopting a plate splicing mode and the like. The ventilation flow path 2 may be connected to the hood inner panel and/or the hood outer panel 1 by welding, bonding, or the like, or may be directly formed by an integral molding process with the hood inner panel and/or the hood outer panel 1.

According to the hood provided by the embodiment of the utility model, the air inlet 11 which is at the preset distance from the tail end of the hood outer plate 1 is arranged, so that when the air conditioner is in external circulation, air flow carrying low-intensity pulsation noise can be introduced into the ventilation flow channel 2, and the ventilation flow channel 2 between the hood inner plate and the hood outer plate 1 is matched, the energy of the noise carried by the air flow is further attenuated, the air flow with the attenuated noise energy sequentially passes through the air inlet channel 01 and the air box of the air conditioner and finally enters the passenger cabin, so that the wind noise of the passenger cabin is effectively reduced. Therefore, the problem that the NVH performance of the vehicle is seriously influenced due to the fact that the wind noise in the vehicle is large when the existing vehicle is in external circulation in the air conditioner can be solved through the scheme.

As shown in fig. 2 and 3, in some embodiments of the present utility model, the vent flow channel 2 includes a first channel 21, a second channel 22, and a third channel 23.

The first end of the first passage 21 is adapted to communicate with the air intake passage 01 of the air conditioner, and may introduce an air flow into the ventilation flow path 2.

The second channel 22 is spaced from the first channel 21, and the first end of the second channel 22 is connected to the air inlet 11, so that the air flow in the ventilation channel 2 can be guided into the air inlet channel 01 and the bellows of the air conditioner, and finally into the passenger cabin.

The two ends of the third channel 23 are respectively communicated with the second end of the first channel 21 and the second end of the second channel 22, so that the communication between the first channel 21 and the second channel 22 can be realized.

It should be noted that, the first channel 21, the second channel 22, and the third channel 23 may be linear channels as shown in fig. 3, for example, the first channel 21 and the second channel 22 in fig. 3 each extend along the front-rear direction of the vehicle, or may be arc-shaped channels with a certain curvature or curve-shaped channels with a variable curvature. The third channel 23 may be located on the same side of the first channel 21 and the second channel 22. The length of the first channel 21 may be equal to or greater than the length of the second channel 22, for example, as shown in fig. 3, the distance between the end face of the first channel 21 at the first end far from the third channel 23 and the bottom face of the third channel 23 may be 400mm to 800mm, specifically 400mm, 600mm, 800mm, etc. The distance between the end face of the first end of the second channel 22 remote from the third channel 23 and the bottom face of the third channel 23 may be 100mm to 200mm, specifically may be 100mm, 150mm, 200mm, etc.

In the above technical solution, in the process of flowing the air flow through the ventilation flow channel 2 including the first channel 21, the second channel 22 and the third channel 23, the ventilation flow channel 2 can attenuate the energy of the noise carried by the air flow, so as to effectively reduce the wind noise of the passenger cabin.

As shown in fig. 2, in some embodiments of the present utility model, an air outlet is provided on a side of the first channel 21 near the chassis of the vehicle; a circle of sealing soundproof cotton 211 is arranged around the edge of the air outlet.

Wherein, the sealed soundproof cotton 211 can be closed cell EPDM (Ethylene Propylene Diene Monomer ) foam. The sealing soundproof cotton 211 may have a ring shape, and the thickness, width, etc. thereof may be set according to the size of the air outlet, for example, the thickness may be 20mm and the width may be 30mm. The sealed soundproof cotton 211 is used for sealing and soundproof the connection part between the air outlet of the first channel 21 and the air inlet channel 01 of the air conditioner.

As shown in fig. 2 and 3, in some embodiments of the present utility model, the second channel 22 is disposed obliquely with respect to the first channel 21, and the distance between the second end of the first channel 21 and the second end of the second channel 22 is smaller than the distance between the first end of the first channel 21 and the first end of the second channel 22.

The distance between the second end of the first channel 21 and the second end of the second channel 22 may be 100mm to 300mm, specifically 100mm, 200mm, 300mm, etc. The distance between the first end of the first channel 21 and the first end of the second channel 22 may be 200 mm-400 mm, in particular 200mm, 330mm, 400mm etc. As shown in fig. 3, the second passage 22 is inclined with respect to the first passage 21, and the center line of the second passage 22 and the center line of the third passage 23 may form an obtuse angle α. The obtuse angle may range from 100 ° to 120 °, for example, 95 °, 100 °, 110 °, 120 °, and the like.

According to the technical scheme, when the airflow in the ventilation channel 2 flows from the second channel 22 to the third channel 23, the airflow direction is suddenly changed to form turbulence, and additional noise is generated.

In some embodiments of the utility model, as shown in fig. 3, the cross-sectional flow area of the first passage 21 is greater than the cross-sectional flow area of the second passage 22.

In the above technical solution, the cross-sectional area of the first channel 21 is set to be larger than the cross-sectional area of the second channel 22, so that the flow velocity of the air flow in the second channel 22 after entering the first channel 21 is reduced, the energy of noise carried by the air flow is further attenuated, and the wind noise of the passenger cabin is reduced.

As shown in fig. 2 and 3, in some embodiments of the present utility model, the junction of the third channel 23 with the first channel 21 and the second channel 22 is transitioned by rounded corners. The radius of the fillet may be 20mm, 30mm, etc. In this way, the air flow in the ventilation channel 2 can more smoothly pass through the connection part of the third channel 23 and the first channel 21 and the second channel 22, and extra noise is avoided.

As shown in fig. 2 and 3, in some embodiments of the present utility model, the number of the second channels 22 is at least two, and at least two second channels 22 are located at both sides of the first channel 21.

It should be noted that the number of the second channels 22 may be two, three, four, etc. As shown in fig. 3, when the number of the second passages 22 is two, the two second passages 22 may be symmetrically disposed about the center line of the first passage 21.

In the above technical solution, the plurality of second channels 22 are respectively disposed at two sides of the first channel 21, which is not only beneficial to the equalization of the air flow flowing from the second channels 22 into the first channel 21, but also facilitates the design and manufacture of the ventilation flow channel 2.

In some embodiments of the present utility model, as shown in fig. 3, fig. 3 is a cross-sectional view of the ventilation flow path 2 in fig. 1, and the inner wall of the ventilation flow path 2 is provided with sound absorbing cotton 20. The sound-absorbing cotton 20 may be attached to the inner wall of the ventilation flow path 2 by adhesion or the like, and the thickness of the sound-absorbing cotton 20 may be designed according to the cross-sectional area of the ventilation flow path 2, for example, when the cross-sectional area of the ventilation flow path 2 is 100mm, the thickness of the sound-absorbing cotton 20 may be set to 10mm. According to the scheme, the sound absorbing cotton 20 is arranged on the inner wall of the ventilation flow channel 2, so that the energy of noise carried by air flow is attenuated, and the wind noise of a passenger cabin is further reduced.

As shown in fig. 4, fig. 4 is a schematic structural diagram of the cover plate 3 in the hood in fig. 1, and the hood may further include the cover plate 3 disposed at the air inlet 11, where the cover plate 3 is provided with a plurality of through holes 31.

The shape and size of the cover plate 3 are matched with those of the air inlet 11, for example, when the air inlet 11 is rectangular, the shape of the cover plate 3 is also rectangular. Of course, the cover plate 3 may have various other shapes such as a circle, an ellipse, and the like. The cover plate 3 is provided with a plurality of through holes 31, and air flows into the ventilation flow channel 2 through the through holes 31. The through hole 31 may have various shapes such as a circle, an ellipse, etc. When the through hole 31 is a circular hole, the radius of the through hole 31 may be 5mm to 9mm, specifically 5mm, 6mm, 7.5mm, 8mm, 9mm, or the like. According to the scheme, the cover plate 3 provided with the through hole 31 is buckled on the air inlet 11, so that the probability that foreign matters such as dust, fallen leaves, mosquitoes enter the passenger compartment through the ventilation flow channel 2 can be reduced.

Next, a second aspect of the utility model also proposes a vehicle comprising a hood according to any one of the first aspects described above.

The vehicle provided by the utility model has all the beneficial effects of the hood due to the hood provided by the embodiment. The hood is described in detail above and will not be described in detail here.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A hood for use with a vehicle including an air conditioner, comprising:

the air conditioner comprises a hood outer plate (1), wherein the hood outer plate (1) is provided with an air inlet (11), and the air inlet (11) and the tail end of the hood outer plate (1) are arranged at intervals; and

And a ventilation flow passage (2) is formed between the hood inner plate and the hood outer plate (1), one end of the ventilation flow passage (2) is connected with the air inlet (11), and the other end of the ventilation flow passage is communicated with an air inlet channel (01) of the air conditioner.

2. The hood according to claim 1, characterized in that the ventilation flow channel (2) comprises:

a first passage (21), wherein a first end of the first passage (21) is used for communicating with an air inlet passage (01) of the air conditioner;

a second channel (22), wherein the second channel (22) is arranged at intervals with the first channel (21), and the first end of the second channel (22) is connected with the air inlet (11);

-a third channel (23), both ends of the third channel (23) being in communication with the second end of the first channel (21) and the second end of the second channel (22), respectively.

3. A hood according to claim 2, characterized in that the side of the first channel (21) adjacent to the chassis of the vehicle is provided with an air outlet; a circle of sealing soundproof cotton (211) is arranged around the edge of the air outlet.

4. The hood according to claim 2, characterized in that the second channel (22) is arranged obliquely with respect to the first channel (21) and that the distance between the second end of the first channel (21) and the second end of the second channel (22) is smaller than the distance between the first end of the first channel (21) and the first end of the second channel (22).

5. A hood according to claim 2, characterized in that the cross-sectional flow area of the first channel (21) is larger than the cross-sectional flow area of the second channel (22).

6. The hood according to claim 2, characterized in that the junction of the third channel (23) with the first channel (21) and the second channel (22) is transited by means of rounded corners.

7. A hood according to any one of claims 2 to 6, characterized in that said second channels (22) are at least two in number, at least two of said second channels (22) being located on either side of said first channel (21).

8. A hood according to claim 1, characterized in that the inner wall of the ventilation channel (2) is provided with sound absorbing cotton (20).

9. The hood according to claim 1, characterized in that it further comprises a cover plate (3) arranged at the air inlet (11), said cover plate (3) being provided with a plurality of through holes (31).

10. A vehicle comprising a hood according to any one of claims 1 to 9.