JP6641225B2 - Intake duct - Google Patents

Description

  The present invention relates to an intake duct.

  In general, large transport vehicles such as trucks have more opportunities to travel on unpaved rough roads than ordinary passenger cars, so the engine intake is not the outside air near the ground where there is a lot of dust. However, it is preferable to take in fresh air that is sufficiently high above the ground.Also, there is a risk that rainwater and snow may jump up near the ground. Incorporation is preferred.

  For this reason, in a large-sized transport vehicle, as shown in an example in FIG. 4, an intake duct b extending long in the up-down direction is installed on the rear surface of the cab a. A duct body d having an outer shell structure by opening an air intake port c for taking in air as engine intake air, and covering the air intake port c to prevent rainwater from directly descending (similarly when snow enters). Louvers e), but there is also a louver e provided with a wire net f inside the louvers e so as to prevent suction of fine foreign substances such as dead leaves.

  As prior art document information related to the above-described intake duct, Patent Document 1 below has been proposed.

Japanese Patent No. 5,325,764

  However, in the intake duct b in which the wire mesh f is installed inside the louver e as described above, even if rainwater directly falling into the air intake c can be prevented by the louver e, the louver e prevents the flow of air. It is not possible to prevent fine water droplets such as fog that easily accompanies from passing through the louver e and reaching the wire netting f, and there is a risk that water droplets aggregated by the wire netting f propagate down and enter the duct body d. There was.

  For example, in the case of Patent Document 1 mentioned above, an internal partition part that partitions an internal space near the air intake of the duct main body into a plurality of flow paths by a partition plate is built in the duct main body. Although an example with a drip channel at the lower end is disclosed, this is intended for an intake duct of a type that does not have a wire mesh inside the louver, and the drip channel shown here is from the air inlet. The purpose is to collect water drops that have penetrated and collided with the partition plate, and no countermeasures have been taken for water drops that run down the wire mesh inside the louver.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an intake duct capable of reliably collecting water droplets that have aggregated and fallen down by a wire mesh and preventing entry into a duct main body.

The present invention, sky and duct body constituting an outer shell structure opens the inlet in the upper Kido, and louvers that prevent direct Furikomi rainwater to cover the air inlet, interposed on the inner side of the louver A wire mesh for preventing suction of fine foreign matter, and forming a drip channel on an inner wall surface of the duct body immediately below the air intake for receiving water droplets flowing down the wire mesh, and forming the water droplets through the drip channel. An air intake duct of a vehicle configured to be able to be guided to a predetermined water collecting portion in the duct main body, wherein a plurality of flow paths are provided inside the duct main body and near an air intake of the duct main body by a partition plate. A drip channel forming portion for forming the drip channel between the duct body and an inner wall surface immediately below an air intake of the duct body, It is characterized in that provided in the section partition parts.

  In this way, even if fine water droplets such as mist reach the wire mesh inside the louver along with the flow of air, the water droplets condensed and transmitted down by the wire mesh will take air. Since the water droplets are received by the drip channel just below the entrance and guided to a predetermined water collecting portion in the duct main body through the drip channel and collected, the water droplets are prevented from entering the duct main body.

Further, according to the present invention, there is provided an internal partitioning part which is built into the duct main body and divides an internal space near the air intake of the duct main body into a plurality of flow paths by a partition plate, and is provided immediately below the air intake of the duct main body. Since a drip channel forming portion for forming a drip channel between the inner wall surface and the inner wall surface is provided in the internal partition part, the air partition of the duct main body can be performed simply by including the separately manufactured internal partition part at the time of blow molding the duct main body. A drip channel can be easily formed on the inner wall surface just below the entrance.

  Further, in the case where the internal partition part is provided as described above, it is preferable to equip the internal partition part with a water recovery unit that collects water droplets guided by the drip channel. In this case, the separately manufactured internal partition is provided. It is possible to easily provide a water recovery section in the duct body simply by including the parts during the blow molding of the duct body, and the water recovery section is partitioned by clamping a part of the duct body with a mold and crushing it. The cross-sectional area of the flow channel can be kept large as compared with the case where it is manufactured by using the above method.

  According to the above-described intake duct of the present invention, various excellent effects as described below can be obtained.

  (I) According to the invention described in claim 1 of the present invention, water droplets aggregating and traveling down the wire net are received by the drip channel immediately below the air intake, and predetermined water recovery in the duct main body via the drip channel. Since the water can be reliably collected by being guided to the portion, it is possible to prevent water droplets from entering the duct main body.

According to the invention described in claim 1, (II) the present invention, a drip channel on the inner wall surface immediately below the air inlet of the duct body simply by enclosing the internal partition part which is separately manufactured during the blow molding of the duct body The drip channel can be easily formed, and the increase in cost required for newly installing the drip channel can be significantly suppressed.

(III) According to the invention described in claim 2 of the present invention, the water collecting portion can be easily provided in the duct main body only by including the separately manufactured internal partition part at the time of blow molding the duct main body. Therefore, it is possible to keep the cross-sectional area of the flow channel large compared to the case where the water recovery section is divided by sandwiching a part of the duct body with a mold and crushing it. Can be avoided.

It is an exploded view showing an example of an embodiment for carrying out the present invention. It is a front view of the intake duct of FIG. It is a side view of the intake duct of FIG. It is an exploded view showing a conventional example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an example of an embodiment of the present invention. An intake duct 1 in this embodiment is similar to the conventional intake duct b described above with reference to FIG. The air intake 3 is vertically installed and is configured to take in outside air as engine intake air from an air intake 3 opened at an upper side thereof. A louver 5 that covers the air intake 3 to prevent rainwater from directly falling, and a wire net 6 that is interposed inside the louver 5 to prevent suction of fine foreign matter. A drip channel 7 (see FIGS. 2 and 3) is formed on an inner wall surface of the duct body 4 directly below the air inlet 3 to receive water drops w (see FIG. 2) traveling down the wire mesh 6. Through 7 Is characterized in was configured to obtain lead the water droplets w to the duct body 4 water recovery unit in the 8 (see FIGS. 2 and 3) Te.

  In particular, in the present embodiment, an internal partitioning part 12 that partitions an internal space near the air intake 3 of the duct main body 4 into a plurality of flow paths by the partition plates 9, 10, 11 is built in the duct main body 4, When the separately manufactured internal partition part 12 is included in the duct body 4 during blow molding, the angle-type drip channel forming part 13 (see FIG. 1) provided on the internal partition part 12 side is connected to the duct main body 4. The drip channel 7 (refer to FIG. 2) is formed between the inner wall surface and the inner wall surface by abutting the inner wall surface immediately below the air inlet 3 in the above. It is provided on a part of the internal partition part 12 side, and is integrated with the inner wall surface of the duct main body 4 when the duct main body 4 is blow molded.

  Here, a supplementary description of the structure of the internal partition part 12 will be given. Two of the three partition plates 9, 10, 11 provided in the internal partition part 12 are separated by air. The surface facing the inlet 3 is arranged at an interval between the front side and the back side, and the upper side is curved toward the air inlet 3 side so that the air inlet 3 is vertically divided into three parts. At the same time, the remaining one partition plate 11 has a right angle between the partition plates 9 and 10 so as to divide the flow path sandwiched between the two partition plates 9 and 10 into two right and left parts. The internal space near the air inlet 3 of the duct main body 4 is partitioned into four flow paths by these three partition plates 9, 10, 11.

  Further, the three partitions 9, 10, 11 are fitted into the inner wall surface of the duct main body 4 over the entire circumference at the middle part of the two partitions 9, 10 in the vertical direction, and the three partitions 9, 10, 11 are connected to the duct main body. A support frame 14 for supporting from the side 4 is formed, and the support frame 14 itself is a similar drip channel forming part including the drip channel forming part 13 as a part, and the air intake 3 The drip channel is formed over the entire circumference including the drip channel 7 immediately below as a part.

  The support frame 14 is provided with the above-described water recovery unit 8 (see FIG. 2) so as to recover the water droplets w received by the drip channel (including the drip channel 7) over the entire circumference. The support frame 14 is provided with a downward slope so that water droplets w can flow down toward the water recovery unit 8. Further, the surfaces of the two partition plates 9 and 10 correspond to the support frame 14. The drip channels 15 and 16 are formed at the heights where the water is collected, and the drip channels 15 and 16 have a downward slope toward the water recovery unit 8.

  A drain port (not shown) that penetrates through the duct body 4 and opens to the outside is provided at the bottom of the water recovery section 8 by post-processing, and water is drained from this drain port. It is preferable to keep it.

  Thus, if the intake duct 1 is configured in this manner, even if fine water droplets w such as fog reach the wire mesh 6 inside the louver 5 with the flow of air, the wire mesh 6 The water droplets w that are agglomerated and fall are received by the drip channel 7 immediately below the air inlet 3 and guided to the water recovery unit 8 via the drip channel 7 to be collected. Thus, the water droplets w enter the duct body 4. Intrusion is prevented.

  In general, this kind of intake duct 1 is manufactured by blow molding. At this time, the internal partition part 12 manufactured separately is simply included in the duct main body 4 at the time of blow molding. The drip channel 7 can be easily formed on the inner wall surface of the duct body 4 immediately below the air intake 3.

  In addition, since the water collecting portion 8 for collecting the water droplets w guided by the drip channel 7 is provided on the side of the internal partitioning component 12, the internal partitioning component 12 is simply included in the duct body 4 at the time of blow molding. The water collecting portion 8 can be easily provided in the duct main body 4, and the flow path is cut off as compared with the case where the water collecting portion is divided by sandwiching a part of the duct main body 4 with a mold and crushing. The area can be kept large.

  Therefore, according to the above-described embodiment, the water droplets w that are agglomerated in the wire net 6 and fall are received by the drip channel 7 immediately below the air inlet 3 and guided to the water recovery unit 8 via the drip channel 7 to be reliably recovered. Therefore, it is possible to prevent water droplets w from entering the duct main body 4.

  Further, the drip channel 7 can be easily formed on the inner wall surface just below the air inlet 3 of the duct body 4 simply by including the separately manufactured internal partition part 12 at the time of blow molding of the duct body 4. It is possible to significantly suppress an increase in cost required for newly establishing the channel 7.

  Furthermore, since the water collecting portion 8 can be easily provided in the duct main body 4 only by including the separately manufactured internal partition part 12 at the time of blow molding of the duct main body 4, a part of the duct main body 4 is formed into a mold. As compared with the case where the water recovery section 8 is divided and made by sandwiching and crushing, the flow path cross-sectional area can be kept large, and a large increase in intake resistance can be avoided.

  In addition, the intake duct of the present invention is not limited to the above-described embodiment, and the drip channel and the water recovery part immediately below the air intake are not necessarily limited to being formed by using the internal partition parts. Of course, various changes can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Intake duct 2 Cab 3 Air intake 4 Duct body 5 Louver 6 Wire mesh 7 Drip channel 8 Water recovery part 9 Partition plate 10 Partition plate 11 Partition plate 12 Internal partition parts 13 Drip channel forming part w Water drop

Claims (2)

A duct body constituting an outer shell structure by opening the air Kido inlet on the upper side, and louvers that prevent direct Furikomi rainwater to cover the air inlet, fine is interposed inside of the louver A wire mesh for preventing suction of foreign matter, a drip channel is formed on an inner wall surface immediately below the air intake of the duct body for receiving water droplets traveling down the wire mesh, and the water droplets are formed in the duct body via the drip channel. An air intake duct of a vehicle configured to be able to be guided to a predetermined water recovery section in the above, wherein an internal space built in the duct main body and close to an air intake of the duct main body is divided into a plurality of flow paths by a partition plate. A drip channel forming portion for forming the drip channel between the duct body and an inner wall surface immediately below an air inlet of the duct body; Intake duct, characterized in that provided on the goods. The air intake duct according to claim 1 , wherein a water recovery unit that recovers water droplets guided by the drip channel is provided on an inner partition part side.

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