Air introducing device

Abstract

To provide an air introducing device having a high degree of freedom in shape and capable of easily coping with an increase in the amount of air to be introduced.SOLUTION: An air introducing device 11 is a device that takes in air from the outside of a vehicle 10. The air introducing device 11 comprises: an opening 12 for taking in air; and a circulation portion 13 for circulating the air taken in from the opening 12. The opening 12 has a longitudinal direction along a direction orthogonal to a direction in which the vehicle 10 travels. The circulation portion 13 is configured to blow air along the longitudinal direction, and has a cross section capable of forming a vortex 14 composed of the air taken in through the opening 12.SELECTED DRAWING: Figure 2A

Description

[Technical field]

[0001] The present invention relates to an air introduction device provided in a vehicle. [Background technology]

[0002] Conventionally, an opening is formed in a vehicle body and air is introduced through the opening. One example of such an opening is a NACA duct as described in Patent Document 1.

[0003] The NACA duct is a duct whose cross section gradually changes as it approaches the intake duct. The NACA duct generates a vortex inside itself, which allows it to efficiently take in air and guide it by the negative pressure generated by it.

[0004] Patent Documents 2 and 3 disclose inventions in which an opening for taking in air is formed in the vehicle body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-23126 A [Patent Document 2] JP 2012-254677 A [Patent Document 3] JP 2005-247124 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the invention described in the above-mentioned Patent Document 1 etc. leaves room for improvement in terms of restrictions on the duct shape and the like.

[0007] Specifically, the NACA duct described in Patent Document 1 requires a large duct shape relative to the cross-sectional area of ​​the intake air, which results in a problem of the entire duct occupying a large area. In addition, when increasing the amount of intake air in the NACA duct, multiple ducts are required, which results in a problem of the entire duct configuration becoming complicated. Furthermore, since the NACA duct is formed long along the vehicle longitudinal direction, when the space constraints in the vehicle longitudinal direction are severe, it is difficult to arrange the NACA duct itself. Moreover, even with the inventions described in Patent Documents 2 and 3, it was not easy to solve the above problem.

[0008] Furthermore, because the intake shape of a NACA duct is a horizontally long rectangle, in order to connect it to a duct with a round cross-section, there was an issue that an additional structure that changes the cross-section was required at the rear of the duct.

[0009] The present invention has been made in consideration of such problems, and an object of the present invention is to provide an air introduction device that has a high degree of freedom in terms of shape and can easily accommodate an increase in the amount of air to be introduced. [Means for solving the problem]

[0010] An air introduction device according to one embodiment of the present invention is an air introduction device that takes in air from outside a vehicle, and is equipped with an opening through which the air is taken in and a circulation section through which the air taken in from the opening circulates, the opening having a longitudinal direction along a direction perpendicular to the direction in which the vehicle travels, the circulation section being configured to blow the air along the longitudinal direction, and having a cross-section capable of forming a vortex made of the air taken in through the opening. Effect of the Invention

[0011] According to the air introduction device of the present invention, it is possible to provide an air introduction device that has a high degree of freedom in terms of shape and can easily accommodate an increase in the amount of air to be introduced. Specifically, it is possible to shorten the width of the opening in the front-rear direction of the vehicle. Furthermore, by forming an air vortex inside the flow section, it is possible to actively take in air from the outside through the opening.

[0012] Furthermore, according to this embodiment, a flow with a circular cross section is generated inside the flow section due to the vortex effect, so that a duct having a circular cross section can be directly connected to the air introduction device. [Brief description of the drawings]

[0013] [Figure 1A] 1 is a perspective view showing a vehicle equipped with an air introduction device according to an embodiment of the present invention. [Figure 1B] 1 is a cross-sectional view showing a portion of a vehicle in which an air introduction device according to an embodiment of the present invention is provided. [Figure 2A] 1 is a perspective view showing a portion of a vehicle in which an air introduction device according to an embodiment of the present invention is provided. [Figure 2B] 1 is a side view showing a portion of a vehicle in which an air introduction device according to an embodiment of the present invention is provided. [Figure 3A] 1 is a perspective view showing an air introduction device according to an embodiment of the present invention. [Figure 3B] 1 is a cross-sectional view showing an air introduction device according to an embodiment of the present invention. [Figure 4] 1 is a cutaway perspective view showing an air introduction device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] An air introduction device 11 and a vehicle 10 according to an embodiment of the present invention will be described in detail below with reference to the drawings. In the following description, the front-rear, up-down, left-right directions are used, and left-right means left-right when the vehicle 10 is viewed from the front. The vehicle width direction is also synonymous with the left-right direction. Furthermore, the same members are generally given the same reference numerals, and repeated description will be omitted.

[0015] FIG. 1A is a perspective view showing a vehicle 10 equipped with an air induction device 11. FIG.

[0016] The vehicle 10 is, for example, a passenger car. An air introduction device 11 is provided on a body 19 of the vehicle 10. Here, an opening 12 of the air introduction device 11 is disposed on the body 19 behind a rear window 18. As will be described later, when the vehicle is running, outside air is taken into the vehicle from the opening 12. The taken-in air is used, for example, for cooling the turbine, the differential, and the brakes.

[0017] The air introduction device 11 may be disposed in a portion other than the rear portion of the vehicle body 19. For example, the air introduction device 11 may be disposed in a front portion or a side portion of the vehicle body 19. The air introduction device 11 may also be referred to as an intake duct.

[0018] Fig. 1B is a cross-sectional view showing a portion of the vehicle 10 where the air introduction device 11 is provided. Fig. 1B is a cross-sectional view taken along the line AA in Fig. 1A.

[0019] When the vehicle 10 is traveling, a traveling wind is generated as indicated by the dotted arrow. A part of the traveling wind flows along the rear window 18 and then enters the inside of the vehicle body 19 through the opening 12 of the air introduction device 11. In this embodiment, the air introduction device 11 actively forms a vortex inside, and therefore can effectively take in air from the opening 12.

[0020] The configuration and operation of the air introduction device 11 will be described with reference to Figures 2A to 3B. Figure 2A is a perspective view showing a portion of the vehicle 10 where the air introduction device 11 is provided. Figure 2B is a side view showing a portion of the vehicle 10 where the air introduction device 11 is provided. Figure 3A is a perspective view showing the air introduction device 11. Figure 3B is a cross-sectional view showing the air introduction device 11. In these figures, the dashed arrows indicate the running wind, which is the flow of air generated when the vehicle is running.

[0021] 2A and 3A, air introduction device 11 is a device that takes in air from the outside of vehicle 10 while the vehicle is running. Air introduction device 11 mainly includes opening 12 through which air is taken in, and circulation section 13 through which the air taken in from opening 12 circulates.

[0022] As shown in FIG. 2A, the air introduction device 11 has a first air introduction device 111 and a second air introduction device 112. The first air introduction device 111 is an air introduction device 11 disposed on the right side of the vehicle 10. The second air introduction device 112 is an air introduction device 11 disposed on the left side of the vehicle 10. The first air introduction device 111 and the second air introduction device 112 are disposed substantially symmetrically with respect to a line segment (not shown) extending in the front-rear direction at the center of the width of the vehicle 10. With this configuration, the opening 12 can be formed elongated along the width direction of the vehicle 10. Furthermore, a first duct 201 and a second duct 202, which will be described later, can be disposed at the vehicle width direction end of the air introduction device 11.

[0023] The first air introduction device 111 has a first opening 121 and a first circulating portion 131. A first duct 201 is connected to an outer end portion in the width direction of the first circulating portion 131. As shown in Fig. 2B, when the vehicle is running, air taken in from the first opening 121 passes through the first circulating portion 131 and the first duct 201 and is introduced into the vehicle interior.

[0024] The first opening 121 is a substantially rectangular opening formed on the right side of the vehicle body 19. The first opening 121 has a longitudinal direction along a direction perpendicular to the direction in which the vehicle 10 travels, that is, along the left-right direction.

[0025] The first circulation section 131 is configured to blow air, which is a running wind generated when the vehicle 10 is moving, along the longitudinal direction, that is, the right side. The cross section of the first circulation section 131 is configured to form a vortex 14 made of air taken in via the first opening 121. The vortex 14 will be described with reference to FIG. 3B etc. The first circulation section 131 is formed over the entire area below the first opening 121. The right side end of the first opening 121 is connected to the first duct 201.

[0026] The cross section of the first circulating portion 131 becomes larger toward the right, which is the downstream side of the air flow inside the first circulating portion 131. Specifically, the first opening 121 is formed substantially horizontally, and the first circulating portion 131 is connected to the lower part of the first opening 121. The bottom surface portion of the first circulating portion 131 inclines downward toward the right. With this configuration, the cross section of the first circulating portion 131 becomes larger toward the right, which is the downstream side of the air flow. Therefore, when the vehicle is running, the air taken in from the first opening 121 can be more actively taken into the vehicle interior.

[0027] The second air introduction device 112 has a second opening 122 and a second circulating portion 132. A second duct 202 is connected to an outer end portion in the width direction of the second circulating portion 132. When the vehicle is traveling, air taken in from the second opening 122 is introduced into the vehicle interior via the second circulating portion 132 and the second duct 202. The configuration of the second air introduction device 112 is substantially similar to the configuration of the first air introduction device 111 described above.

[0028] The second opening 122 is a substantially rectangular opening formed on the left side of the vehicle body 19. The second opening 122 has a longitudinal direction along a direction perpendicular to the direction in which the vehicle 10 travels, i.e., along the left-right direction. The first opening 121 and the second opening 122 described above may be continuous with each other or may be spaced apart from each other.

[0029] The second flow section 132 is configured to blow air, which is a running wind generated when the vehicle 10 is running, along the longitudinal direction, that is, the left side. The cross section of the second flow section 132 is configured to be able to form a vortex 14 made of air taken in via the second opening 122. The second flow section 132 is formed over the entire area below the second opening 122. The left side end of the second opening 122 is connected to the second duct 202.

[0030] The cross section of the second circulating portion 132 becomes larger toward the left, which is the downstream side of the air flow inside the second circulating portion 132. Specifically, the second opening 122 is formed substantially horizontally, and the second circulating portion 132 is connected to the lower part of the second opening 122. The bottom surface portion of the second circulating portion 132 inclines downward toward the left. With this configuration, the cross-sectional area of ​​the second circulating portion 132 becomes larger toward the left, which is the downstream side of the air flow. Therefore, when the vehicle is running, the air taken in from the second opening 122 can be taken into the vehicle interior more actively. Furthermore, the second circulating portion 132 can be made smaller in size. Here, the cross-sectional shape and cross-sectional area of ​​the second circulating portion 132 may be substantially the same on the upper side and the lower side of the air flow.

[0031] FIG. 3B is a cross-section of first opening 121 and first flow section 131 taken along line BB in FIG. 3A.

[0032] 3B, the cross section of the first circulating portion 131 is a part of a substantial circle or a part of a substantial ellipse. That is, the cross section of the first circulating portion 131 is a substantial arc shape. By having such a cross-sectional shape, when the vehicle is traveling, air, which is a traveling wind that flows from the first opening 121 into the first circulating portion 131, flows along the inner surface of the first circulating portion 131 and forms a vortex 14. Here, the vortex 14 that flows clockwise on the paper surface is formed. The same applies to the second circulating portion 132 shown in FIG. 3A.

[0033] The first connection portion 151 is a duct that connects the first opening 121 and the first flow portion 131. The first connection portion 151 is inclined so as to move away from the opening 12 along the flow of air taken in through the opening 12. That is, the first connection portion 151 is inclined downward toward the rear.

[0034] The wall portion 152 forming the rear portion of the first connection portion 151 is continuous with the upper rear end portion of the first circulation portion 131 at the connection point 16. Here, when the first circulation portion 131 is regarded as having a substantially circular cross section, the wall portion 152 is parallel or substantially parallel to a tangent line of the first circulation portion 131 at the connection point 16. In this manner, the air introduced into the first circulation portion 131 via the first opening 121 and the first connection portion 151 can be smoothly swirled inside the first circulation portion 131, and the vortex 14 can be effectively formed.

[0035] The second air introduction device 112 shown in FIG. 3A also has a portion equivalent to the first connection portion 151, similar to that described above.

[0036] FIG. 4 is a cutaway perspective view showing an air introduction device 11 according to another embodiment.

[0037] Here, a wall portion 17 is formed on the inner surface of the first circulating portion 131. The wall portion 17 is a wall-shaped portion that rises upward from the inner surface of the first circulating portion 131 and extends along the front-rear direction. A plurality of wall portions 17 are arranged at approximately equal intervals along the left-right direction inside the first circulating portion 131. By forming the wall portion 17, it is possible to make the vortex 14 flow easily along its axial direction inside the first circulating portion 131 during vehicle running. In addition, the wall portion 17 is inclined toward the right, which is the outer side in the width direction, toward the front. By inclining the wall portion 17, the vortex 14 formed inside the first circulating portion 131 is formed in a spiral shape toward the right, which is the outer side in the width direction. Therefore, the air inside the first circulating portion 131 can be effectively caused to flow toward the first duct 201, and a larger amount of air can be taken in through the first circulating portion 131.

[0038] The wall portion 17 is also formed in the second flow passage portion 132 shown in FIG. 3A.

[0039] The technical ideas that can be understood from the above-described embodiment will be described below together with their effects.

[0040] The air introduction device according to one embodiment of the present invention is an air introduction device that takes in air from outside the vehicle, and is equipped with an opening through which the air is taken in and a circulation section through which the air taken in from the opening flows, the opening has a longitudinal direction along a direction perpendicular to the direction in which the vehicle runs, the circulation section is configured to blow the air along the longitudinal direction, and has a cross section that can form a vortex made of the air taken in through the opening. According to the air introduction device of the present invention, the width of the opening in the front-rear direction of the vehicle can be shortened. Furthermore, by forming an air vortex inside the circulation section, air can be actively taken in from the outside through the opening.

[0041] In addition, the air introduction device according to one embodiment of the present invention further includes a connection part connecting the opening and the circulation part, and the connection part is inclined away from the opening along the flow of the air taken in through the opening. According to the air introduction device of the present invention, a vortex can be effectively formed inside the circulation part by air flowing into the circulation part from the inclined connection part.

[0042] In the air introduction device according to one embodiment of the present invention, the cross section of the flow passage portion has a substantially arc shape. According to the air introduction device of the present invention, a vortex can be effectively formed by making the air flow along the inner surface of the communication portion.

[0043] In the air introduction device according to one embodiment of the present invention, the cross section of the circulation part increases toward the downstream side of the air flow inside the circulation part. According to the air introduction device of the present invention, the air introduced from the opening can be effectively blown.

[0044] In addition, the air introduction device according to one embodiment of the present invention is characterized in that a wall portion is formed on the inner surface of the circulation portion. According to the air introduction device of the present invention, the fins serving as the wall portion have an aerodynamic effect on the air, so that a vortex can be effectively formed inside the circulation portion.

[0045] Although the embodiment of the present invention has been described above, the present invention is not limited to this, and modifications can be made without departing from the scope of the present invention. In addition, the above-described embodiments can be combined with each other.

[0046] Referring to FIG. 2A, the air introduction device 11 has a first air introduction device 111 and a second air introduction device 112 arranged symmetrically on the left and right, but the air introduction device 11 can also be configured from only components equivalent to the first air introduction device 111.

[0047] 2A, a portion corresponding to a NACA duct can be formed on the surface of the vehicle body 19 on the front side of the opening 12. That is, the surface of the vehicle body 19 on the front side of the opening 12 is configured so that its cross section gradually changes as it approaches the opening 12. In this way, air can be taken in from the opening 12 more effectively. [Explanation of symbols]

[0048] 10 Vehicles 11 Air introduction device 111 First air introduction device 112 Second air introduction device 12 Opening 121 First opening 122 Second Opening 13 Distribution Department 131 1st Distribution Department 132 2nd Distribution Department 14. Vortex 151 First connection part 152 Wall 16 Connection points 17 Wall 18 Rear Window 19 Body 201 1st Duct 202 Second Duct

Claims

1. An air introduction device that takes in air from outside the vehicle, an opening through which the air is taken in; a flow section through which the air taken in from the opening flows, The opening has a longitudinal direction along a direction perpendicular to a direction in which the vehicle travels, The air introduction device, characterized in that the circulation section is configured to blow the air along the longitudinal direction and has a cross-section that can form a vortex made of the air taken in through the opening.

2. A connection portion that connects the opening and the flow portion is further provided, The air introduction device according to claim 1 , wherein the connection portion is inclined away from the opening along a flow of the air taken into the opening.

3. 3. The air introduction device according to claim 1, wherein a cross section of the flow passage portion has a substantially arc shape.

4. 2. The air introduction device according to claim 1, wherein a cross section of the circulation portion becomes larger toward a downstream side of the air flow inside the circulation portion.

5. 2. The air introduction device according to claim 1, wherein a wall portion is formed on an inner surface of the flow portion.

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