JPH0315813Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] This invention is mainly used to remove particulate matter and water droplets contained in the air before the air cleaner that purifies the intake air of the engine installed in a road vehicle such as a truck. Regarding the break cleaner for separating and eliminating clogging and extending the life of the air cleaner, more specifically, it includes a vertical duct with a raised air intake to suck in air with less floating duct, and a The present invention also relates to a breech cleaner that is integrated with a duct and is combined with a means for separating and eliminating particulate matter and water droplets contained in the air. [Prior Art] Most of the breech cleaners conventionally used are of the centrifugal separation type, and there are types that are used in conjunction with the front stage of the air cleaner, and centrifugal air cleaners that have the breech cleaner built into the casing. For road vehicles such as trucks, a centrifugal separation type with a built-in brake cleaner has many advantages over a brake cleaner that is used in combination with an air cleaner, such as easier handling and a reduction in the number of parts. There are many. In this case, the tower-mounted engine is usually located and mounted at a location lower than the driver's cab, so the accompanying air cleaner is also located at a lower location. The mainstream is one that extends upwards and is taken in from the top. [Problems to be solved by the invention] In vehicles such as trucks, the space occupied by the engine and air cleaner installed under the driver's cab is relatively large. will be affected and constrained by its size. Although a centrifugal air cleaner with a built-in breech cleaner has the above-mentioned advantages, it has a larger volume than an air cleaner that uses a separate breech cleaner, which is disadvantageous in limited spaces. If the volume of the air cleaner is smaller, the fuel tank can be enlarged accordingly, which is advantageous for the running of the vehicle.Recently, air cleaners that use a separate air cleaner installed outside the space under the driver's cab have been reconsidered. It's here. However, in order to reduce the distance between the driver's cab and the adjacent loading platform, the duct that rises along the rear of the driver's cab often has a flat cross-sectional shape, and in this case, a separate break cleaner is also used. Since the duct is a flat type, it is difficult to adopt a centrifugal break cleaner using swirling flow. Conventionally, there is an example of a cleaner that separates and eliminates particulate matter contained in the intake air using an inertial separation type using a louver, but in this case, the air flow path is gradually narrowed for the air before it is purified. A sloping wall is provided, and a louver is formed on the slanted wall, each of which has an opening with a plurality of folded blades, so that the air flows almost counter-currently through the wall.This gives the function of inertial separation, and the particulate matter is separated after separation. Since the mechanism uses a separate bleed means to remove air, it requires a certain height, and as a breech cleaner used in conjunction with the air cleaner of a vehicle's tower-mounted engine, it occupies a larger space than a centrifugal type. The reality is that it cannot be easily adopted because it requires a means of extraction. [Means for solving the problem] The present invention utilizes the high rise and flat shape of the duct to create a louver-type breech cleaner with an inclined plate louver inside, thereby reducing the occupied space in the example above. The purpose of this invention is to provide a new type of breech cleaner suitable for practical use, which eliminates the disadvantage of large water droplets and is also effective in preventing water droplets. In order to gradually narrow the intake airflow passage, a thin inclined wall with the same width as the long side inner wall is provided downward from a position adjacent to the upper end of the inner wall on either of the long sides, and a slightly elongated open gap is formed at the lower end of the wall. Let it form. In the inclined wall, a plurality of elongated air inlets extending across the inclined surface and close to both ends are arranged at regular intervals vertically, and on the back side of each inlet, the height of the upper edge is slanted upward from the lower end. An inverted louver is formed by providing a slat that extends to a certain extent. [Function] The air that enters from the air intake and descends is reversed and enters from each inlet along the blade plate due to suction, but
Particulate matter mixed in the air is separated by descending due to inertia, reaches the dust collection chamber isolated from the purified air, and is removed by a separate extraction means from an outlet installed near the bottom of the dust collection chamber. be discharged. On the other hand, the purified air that has passed through the louver descends inside the duct, but if the purified air contains fine water droplets, it rides on the airflow and collides with the inner wall of the duct, then descends along the inner wall. In order to catch this in the middle of the duct and discharge it to the outside, a double duct with partial circumferential grooves is used, which not only separates and removes particulate matter but also prevents the intrusion of fine water droplets. It is. [Example] A more detailed explanation will be given below with reference to the drawings of the example. FIG. 1 shows the front side of a truck 10 equipped with a brake cleaner 20 of the present invention. In order to raise the intake air intake 15 for the engine and air cleaner (both not shown) installed below the driver's cab 11, the duct 13 is routed through the conduit 12 along the rear of the driver's cab 11 near the ceiling 16. It extends to the rear wall 17 and is supported by a pair of clamps 18 and 19 to securely hold it, and a rain protection cap 14 fitted to the tip is covered with a coarse mesh. There is a downward air intake 15. The duct 13 has a flat cross-sectional shape in order to reduce the distance between it and the rear adjacent loading platform (not shown). The purpose is to utilize this to configure a special break cleaner 20 that is integrated with the duct 13. FIG. 2 is an explanatory diagram showing one embodiment of the present invention, in which engine exhaust gas is used as the air extraction means. A thin plate inclined wall 22 having the same width as the inner wall is provided downward from near the upper end of one of the long sides 13-1 of the inner wall of the flat duct 13 which also serves as the casing of the breech cleaner 20, and the lower end thereof forms an elongated open gap 23 with respect to the duct inner wall. It is designed to form. The slanted wall 22 has a louver 24 made of a plurality of folded blades configured to reverse the descending airflow until it almost becomes a reverse flow, so that particulate matter is separated by inertia and passes through the louver 24. The purified air descends inside the duct 13. When driving during rain, fine water droplets 25 often get mixed into the purified air, but if these enter the air cleaner, the paper of the element absorbs moisture and deforms, and the dust sticks to the air cleaner, causing early clogging. This can cause various damage such as rusting of constituent metal parts. The present invention not only separates and eliminates particulate matter when the intake air passes through the duct 13, but also serves as a means to prevent fine water droplets 25 from entering the purified air. The inner duct 13 is double-layered so that a partition wall 26 is provided at a position lowered by more than twice as much, and rises to some extent from the partition wall 26, and maintains a uniform gap from the inner wall of the duct 13 all around.
-2 to form a circumferential groove 27, and small holes 28 are provided at arbitrary positions around the vertical duct 13 so that the deepest part thereof communicates with the outside air. The fine water droplets 25 mixed into the purified air passing through the louver 24 collide with the inner wall of the duct 13-1, condense, gradually grow into larger droplets, descend along the inner wall, and reach the circumferential groove 27. The water droplets 25 caught in this way pass through the small hole 28 and into the duct 13.
Expelled outside. On the other hand, the particulate matter separated by inertia without passing through the louver 24 reaches the dust collection chamber 30, which is separated from the purified air flow by the partition wall 29, and enters the dust collection chamber 30 through the exhaust port 31 provided near the bottom of the chamber 30. Connecting pipe 32
As an example of air extraction means in this case, air is extracted by an ejector 34 mechanism provided in the exhaust pipe 33 of the engine, and the exhaust gas is discharged to the outside. FIG. 3 is a partially cutaway perspective view of another embodiment of the present invention, in which a small blower motor 40 is used as the air extraction means. A discharge port 41 provided near the bottom of the dust collection chamber 30
The blower motor 4 is fixed by a band 42.
0 is small because it only needs to have a capacity to bleed about 10% of the amount of air passing through the duct 13, and the electrical wiring 43 is connected in synchronization with the opening and closing of the engine. It is exactly the same as the one in FIG. 2 except for the difference in air extraction means. [Effect of the invention] In the vehicle such as truck 10 shown in Fig. 1,
In contrast to the air cleaner that is normally placed below the driver's cab 11 together with the engine, a flat duct 13 is often used to raise the intake port 15. In this case, a typical centrifugal air cleaner has a different shape. Since it is difficult to combine with the flat duct 13, an air cleaner with a built-in centrifugal break cleaner is currently used. (1) In the present invention, the shape of the duct 13, which has a flat cross-sectional shape and extends vertically upward, is effectively used, and the breech cleaner 20 is integrated with the duct 13 and is separated from the air cleaner, so the duct 13 is of a built-in type. In comparison, by being able to reduce the size even though the excess area is the same, the fuel tank 21 when placed adjacent to each other in the same space can be made correspondingly larger, which increases the volume and is advantageous for running. (2) According to the device of the present invention, the equipment is simpler and inspection and maintenance can be omitted compared to the conventional device in which a separate breech cleaner is connected to the duct and installed. (3) Table 1 shows the performance comparison tests of the device of the present invention shown in FIG. 2 and the conventional breech cleaner of a centrifugal air cleaner with a built-in breech cleaner under the same conditions. However, in this invention, the air is extracted through a cyclone separator to collect dust, and the rated air volume is
It was set at 10%.

[Table] Looking at this table, it can be seen that the product of the present invention has better performance than the conventional product, and in particular, it has a much better water separation efficiency and is therefore highly effective in preventing water droplets. It can be said to be the most suitable for vehicles such as trucks, since it can prevent and eliminate the various adverse effects caused by this method. As explained above, the present invention has been described in detail based on examples as a new break cleaner that exhibits many effects, but various changes and modifications can be made within the scope of the principles of the present invention. It goes without saying that.

[Brief explanation of the drawing]

Figure 1 is a side view of the front of the truck equipped with the brake cleaner of the present invention. FIG. 2 is an explanatory diagram showing the first embodiment of the present invention, in which engine exhaust gas is used as the air extraction means. FIG. 3 is a partially cutaway perspective view of another embodiment of the present invention in which a blower motor is used as the air extraction means. 10... Truck, 11... Cab, 13...
Duct, 15... Air intake, 20... Breaker cleaner, 21... Fuel tank, 22... Inclined wall,
24...louver, 26...partition wall, 27...
Circumferential groove, 28... Small hole, 30... Dust collection chamber, 40...
Blower motor, 41...discharge port, 42...band.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A vertical duct for raising the air intake of an air cleaner, the cross-sectional shape of which is rectangular and flat, adjacent to the upper end of the inner wall on one of the long sides. A thin sloped wall with the same width as the inner wall on the long side is installed downward from this position, and the flow path is narrowed so that the lower end becomes a slightly elongated open gap. An inverted louver formed by arranging a plurality of air inlets at a constant vertical interval, and providing a blade plate on the back side of each inlet that slopes upward from the lower edge and extends to about the height of the upper edge. (b) A small duct whose cross-sectional shape is relatively smaller than that of the vertical duct and whose height is about the same as the short side of the vertical duct, at a position lower than the lower end of the louver to a predetermined depth. The lower end of the small duct is supported by connecting the outer periphery to the inner periphery of the vertical duct by a horizontal partition wall to maintain a uniform gap all around the vertical duct, and the uniform gap and partition wall are connected to the bottom of the small duct. (c) an open gap formed by the lower end of the inclined wall; partition walls on both sides, which have the same width as the short side of the duct, are inclined downward at the same angle from both sides of the inner wall of the duct, and are long enough to touch each other in the center, and have the same width as the inclined wall. Both ends of the vertical walls that are in contact with the lower ends of the vertical walls are triangular shapes that connect to the partition walls on both sides, and in the area of separation from the purified air flow formed by these, there are vertical walls adjacent to the bottom of the vertical walls. A breech cleaner integrated with a flat type duct, comprising: a dust collection chamber having an outlet for discharging particulate matter horizontally through a communication hole provided in the mold duct by a separate air extraction means;