JP4257124B2 - Air cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air cleaner, and more particularly to a structure that can easily be equipped with a precleaner mechanism on the air intake side.
[0002]
[Prior art]
One of the specifications of a vehicle air cleaner for high dust areas is equipped with a pre-cleaner.
The pre-cleaner is attached to the tip or middle part of the intake pipe of the air cleaner, and generates a cyclone flow in the air sucked by the cyclone blades provided inside the cylinder, and this centrifugal effect causes dust, mist, etc. The load of the filtration function of the air cleaner is reduced by introducing a foreign substance having a high specific gravity to the foreign substance discharge port (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-73890 A
[0004]
[Problems to be solved by the invention]
Since the intake side of the air cleaner for general land is a normal intake pipe, to change to a specification for a dusty area, you must add a pre-cleaner separately or replace the normal intake pipe with a pre-cleaner. Therefore, the number of parts increased and the replacement work according to the specification change was troublesome.
[0005]
The present invention solves the above-mentioned problems, and the object of the present invention is to provide an air cleaner that can be easily changed in specification to a pre-cleaner and an air intake pipe depending on whether or not an internal mechanism is added. It is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an air cleaner according to the present invention includes a half-divided cylindrical portion and a dust collecting chamber which is integrally formed at a lower portion thereof and communicates with the cylindrical portion. consists pipe body as a pipe, the inner said tubular portion, with an air in-take pipe cyclone vanes for adding a pre-cleaner function to communicate with the dust collecting chamber is fitted detachably Rutotomoni, In the lower part on the rear side of the cylindrical part, a silencer chamber formed integrally with the dust collecting chamber and a partition wall and communicating with the cylindrical part via a tuning pipe part is provided .
In the present invention, depending on whether or not a cyclone blade is added, the specification can be easily changed to a specification for a multi-dusty region and a specification for a general location. When no cyclone blade is attached, the dust collection chamber also serves as a resonator. In addition, in the present invention , the lower part on the rear side of the cylindrical part is integrally formed with the dust collecting chamber and the partition wall therebetween, and a silencer chamber connected to the cylindrical part via the tuning pipe part is provided. intake silencing function can also be added.
[0007]
Further, in the present invention, dust removal in the case where a pre-cleaner function is added by providing an inner cylinder that divides the cyclone flow into an outer peripheral side and a central part side inside the cylindrical part on the downstream side of the cyclone blade. Increases efficiency.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a pre-cleaner according to the present invention.
[0010]
This pre-cleaner 1 is made of a synthetic resin molded body, and includes a half-divided cylindrical portion 2, a half-shaped dust collecting chamber 3 integrally formed on the lower front side of the cylindrical portion 2, and a collection chamber. It is provided with a halved sound deadening chamber 4 integrally formed at the rear part of the dust chamber 3 through a partition wall, and these are joined together by welding means such as ultrasonic welding as shown in FIG. Thus, the pipe body 5 for air intake is completed.
[0011]
The cylindrical portion 2 includes a front cylindrical portion 2a that gradually increases in diameter from the air intake port, and a small-diameter cylindrical portion 2b that is continuous with the rear portion and is connected to an intake side of an air cleaner casing described later. The lower part of the rear end side of the part 2 a and the dust collecting chamber 3 are communicated with each other through a communication hole 6. Further, the rear lower surface of the small-diameter cylindrical portion 2 b communicates with the sound deadening chamber 4 through a tuning pipe portion 7.
[0012]
A cyclone blade 8 is detachably fitted in the front cylindrical portion 2a. Further, the inner cylinder 9 is fitted to the distal end side of the small diameter cylindrical portion 2b and protrudes toward the front cylindrical portion 2a. These are fixed to the respective fitting positions by an uneven locking structure formed inside the front tube portion 2a and the small diameter tube portion 2b.
[0013]
As shown in part of FIG. 2, the cyclone blade 8 is formed by integrally forming four fixed blades 8b and a propeller boss 8c at the center in a cylindrical duct 8a. The intake air that has passed passes through the fixed wings 8b to generate a cyclone flow according to the pitch, and the dust and mist contained in the intake air are blown off to the inner wall side of the front tube portion 2a by the centrifugal force. It is accumulated on the dust collection chamber 3 side through the communication hole 6.
[0014]
The inner cylinder 9 divides the cyclone flow into an outer peripheral side and a center side, thereby improving the separation efficiency of dust components.
[0015]
Further, an unloader valve 10 is provided in the dust collection chamber 3 so that dust, water, etc. accumulated in the chamber can be discharged.
[0016]
Furthermore, the noise reduction chamber 4 reduces the intake noise by causing a resonance effect in each frequency band according to the volume and the length of the tuning pipe portion 7. The dust collection chamber 3 can also reduce intake noise in a specific frequency band due to a resonance effect corresponding to its volume.
[0017]
As shown in FIG. 3 (a), the pre-cleaner 1 having the above configuration uses a pipe body 5 including a cylindrical portion 2, a dust collecting chamber 3, and a sound deadening chamber 4 as a common part, and is used for a dusty area. By adding the cyclone blade 8 and the inner cylinder 9, the precleaner 1 can be connected to the air intake side of the air cleaner 11.
[0018]
For general areas, as shown in FIG. 2 (as shown in FIG. 2b), the intake pipe 1 ′ with a simple silencing function (resonator) that does not add the cyclone blade 8 and the inner cylinder 7 to the pipe body 5 is provided on the air intake side of the air cleaner 11. Can connect.
[0019]
FIG. 4 shows a second embodiment of the present invention. The main body 5 of the precleaner 1 in the figure is substantially the same as that of the first embodiment except that the sound deadening chamber 4 and the tuning pipe portion 7 are omitted, and the mechanism can be further simplified. Also in the present embodiment, it can be connected to the air intake side of the air cleaner as a simple intake pipe that does not include the cyclone blade 8 and the inner cylinder 9 for general areas.
[0020]
In each embodiment, the inner cylinder 9 is detachable. However, since the intake resistance is not particularly increased by the mounting of the inner cylinder 9, the inner cylinder 9 is formed integrally with the inner side of the cylinder portion 2, or the specification is changed. It is also possible to use a fixed type.
[0021]
【The invention's effect】
As is apparent from the above description, in the air cleaner according to the present invention, the specification can be easily changed to the pre-cleaner and the intake pipe depending on whether or not the internal mechanism is added, and the number of parts can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a precleaner according to a first embodiment of the present invention.
FIG. 2 is a front view showing the half-shaped main body and a cyclone blade added thereto.
3A is a cross-sectional view of an air cleaner to which a pre-cleaner mechanism is added, and FIG. 3B is a cross-sectional view of the air cleaner when an intake pipe is used.
FIG. 4 is a cross-sectional view of a precleaner according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pre cleaner 1 'Intake pipe 2 Cylinder part 2a Front cylinder part 2b Small diameter cylinder part 3 Dust collection chamber 4 Silencer chamber 5 Air intake pipe main body 6 Communication hole 7 Tuning pipe part 8 Cyclone blade 8a Duct 8b Fixed blade 11 Air cleaner

Claims (2)

It has a pipe part that is half-divided and a dust collection chamber that is integrally formed at the bottom and communicates with the pipe part. is Rutotomoni an air-in-take pipe which cyclone vanes is fitted detachably to adding the pre-cleaner function to communicate with the dust collecting chamber, the rear side lower portion of the cylindrical portion, the dust collecting An air cleaner characterized in that a silencer chamber that is integrally formed with a chamber and a partition wall therebetween and communicated with a cylindrical portion via a tuning pipe portion is provided .   The air cleaner according to claim 1, wherein an inner cylinder that divides a cyclone flow into an outer peripheral side and a central part side is provided inside the cylindrical part on a downstream side of the cyclone blade.

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