JP2004211646A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to easily change specifications to a pre-cleaner function and a suction pipe according to presence or absence of addition of an internal mechanism and to reduce number of parts. <P>SOLUTION: An air cleaner 11 is provided with a half-divided tubular part 2 and a dust collection chamber 3 formed at a lower part thereof as one body and communicating to the tubular part 2, and an air intake pipe including main bodies 5 which become the air intake pipe with mating two, a plurality of fixed blades 8b formed in a tubular shape duct 8a as one body and having pre-cleaner function added by a cyclone blade 8 fitted in inside of the tubular part 2 in a front part side of the dust collection chamber 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air cleaner, and more particularly to a structure that can easily be equipped with a pre-cleaner mechanism on an air intake side.
[0002]
[Prior art]
One of the specifications of a vehicle air cleaner for a dusty place is one equipped with a pre-cleaner.
The pre-cleaner is attached to the tip or the middle of the intake pipe of the air cleaner, and generates a cyclone flow in the air taken in by the cyclone blades provided inside the cylinder. The purpose of this invention is to reduce the load on the filtering function of the air cleaner by guiding foreign matter having a high specific gravity to the foreign matter discharge port (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2001-73890
[0004]
[Problems to be solved by the invention]
Since the intake side of the air cleaner for general land is a normal intake pipe, in order to change to a specification for dusty places, a pre-cleaner must be added separately, or the normal intake pipe must be replaced with a pre-cleaner. However, the number of parts increased, and replacement work according to the specification change was troublesome.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air cleaner that can easily change specifications to a pre-cleaner and an air intake pipe according to the presence or absence of an internal mechanism, thereby reducing the number of parts. To provide.
[0006]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a half-split cylindrical portion, a dust collecting chamber integrally formed at a lower portion thereof, and communicating with the cylindrical portion, and a pipe for air intake by combining the two. An air intake pipe is provided on the inner side of the cylindrical portion, wherein a cyclone blade for communicating with the dust collection chamber and adding a precleaner function is attachable. . Therefore, according to the present invention, it is possible to easily change between the specification for dusty lands and the specification for general lands depending on whether or not cyclone blades are added. If no cyclone wing is installed, the dust collection chamber will also serve as the resonator.
[0007]
Further, in the present invention, on the downstream side of the cyclone blade, an inner cylinder for dividing the cyclone flow into an outer peripheral side and a central portion side is provided inside the cylindrical portion, so that dust removal in a case where a pre-cleaner function is added is provided. Efficiency is increased.
[0008]
Further, according to the present invention, the lower portion of the rear portion of the cylindrical portion is integrally formed with the dust collecting chamber and the partition wall separated therefrom, and the silencing chamber communicated with the cylindrical portion through the tuning pipe portion is provided, so that the intake air is provided. A mute function can also be added.
[0009]
BEST MODE FOR CARRYING OUT 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 precleaner according to the present invention.
[0010]
The pre-cleaner 1 is made of a synthetic resin molded body, and includes a half-shaped cylindrical portion 2, a half-shaped dust collecting chamber 3 integrally formed on the lower front side of the cylindrical portion 2, and a pre-cleaner 1. At the rear of the dust chamber 3, there is provided a half-sound-shaped silencing chamber 4 integrally formed via 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 comprises a front cylindrical portion 2a whose diameter gradually increases from its air intake, and a small-diameter cylindrical portion 2b which is continuous with the rear portion and which is connected to the intake side of an air cleaner casing described later. The lower portion on the rear end side of the portion 2 a communicates with the dust collecting chamber 3 through the communication hole 6. The rear lower surface of the small-diameter cylindrical portion 2b communicates with the silencing chamber 4 via a tuning pipe portion 7.
[0012]
The cyclone wing 8 is detachably fitted inside the front cylinder portion 2a. The inner cylinder 9 is fitted to the distal end of the small-diameter cylindrical portion 2b, and protrudes toward the front cylindrical portion 2a. These are fixed to the respective fitting positions by a concave-convex locking structure formed inside the front cylindrical portion 2a and the small-diameter cylindrical portion 2b.
[0013]
As shown in a part of FIG. 2, the cyclone blade 8 is formed by integrally forming four fixed blades 8b inside a cylindrical duct 8a and a propeller boss 8c at the center thereof. The intake air passes through the fixed wing 8b to generate a cyclone flow according to the pitch thereof, and blows dust and mist contained in the intake air toward the inner wall side of the front cylinder portion 2a by its centrifugal force. The dust is collected 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 central side, thereby increasing the efficiency of separating dust components.
[0015]
An unloader valve 10 is provided in the dust collection chamber 3 so that dust, water, and the like accumulated in the room can be discharged.
[0016]
Further, the silencing 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 section 7. The dust collection chamber 3 can also reduce intake noise in a specific frequency band by a resonance effect according to the volume.
[0017]
As shown in FIG. 3 (a), the pre-cleaner 1 having the above-described configuration uses a pipe body 5 composed of an integrally formed cylindrical portion 2, a dust collection chamber 3, and a sound deadening chamber 4 as a common part, and is intended for a dusty area. By adding the cyclone blade 8 and the inner cylinder 9, the pre-cleaner 1 can be connected to the air cleaner 11 on the air intake side.
[0018]
For the general area, as shown in FIG. 3B, the air cleaner 11 has a simple air intake pipe 1 'with a silencing function (resonator) without the cyclone wing 6 and the inner cylinder 7 added to the air intake side of the air cleaner 11. Can be connected to
[0019]
FIG. 4 shows a second embodiment of the present invention. The main body 5 of the precleaner 1 in the figure is almost the same as the first embodiment except that the silencing chamber 4 and the tuning pipe 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 without adding the cyclone blade 8 and the inner cylinder 9 for a general area.
[0020]
In each of the embodiments, the inner cylinder 9 is of a detachable type. However, since the mounting of the inner cylinder 9 does not particularly increase the intake resistance, the inner cylinder 9 may be integrally formed inside the cylinder portion 2 or may be used regardless of a change in specification. Instead, it may be 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 specifications 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 sectional view of a pre-cleaner according to a first embodiment of the present invention.
FIG. 2 is a front view showing the same half-shaped main body and a cyclone blade added thereto.
FIG. 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 in a case where an intake pipe is used.
FIG. 4 is a cross-sectional view of a pre-cleaner according to a second embodiment of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 precleaner 1 ′ intake pipe 2 cylindrical part 2 a front cylindrical part 2 b small-diameter cylindrical part 3 dust collecting chamber 4 noise reduction chamber 5 air intake pipe main body 6 communication hole 7 tuning pipe part 8 cyclone blade 8 a duct 8 b fixed blade 11 air cleaner

Claims (3)

It is provided with a half-shaped cylindrical part, a dust collecting chamber integrally formed at the lower part thereof, and a dust collecting chamber communicating with the cylindrical part, and a pipe body for an air intake pipe by combining the two, and inside the cylindrical part, The air cleaner further comprises an air intake pipe to which a cyclone blade for adding a pre-cleaner function can be attached in communication with the dust collecting chamber. The air cleaner according to claim 1, wherein an inner cylinder that partitions a cyclone flow into an outer peripheral side and a central part side is provided inside the cylindrical portion on the downstream side of the cyclone blade. 3. A muffler chamber formed integrally with the dust collecting chamber and a partition wall at a rear lower portion of the cylindrical portion and communicating with the cylindrical portion via a tuning pipe portion. The described air cleaner.

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