JPH0947618A - Cyclone type air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively introduce dust separated from intake into a dust collecting cylinder as a cyclone type air cleaner. SOLUTION: An inlet pipe 1a and an outlet pipe 1b are fitted on a base end wall side and a cylindrical filter element (e) and a guide cylinder 5 covering its one half part and having a number of revolving blades 5a on the peripheral face are fitted in a sideways positioned cylindrical body 1 with a dust collecting cylinder 6 on the underside of the apex part. On the other hand, in the apex part of the body 1, an auxiliary cylinder 11 which consists of a cylindrical part 11a with specified length and diameter and a flange part 11b reaching the peripheral wall of the body 1 from the base end and provided with a required number of receiving blades 11c inclined in the direction opening against air flow revolved by the revolving blades 5a is arranged to form a dust collecting room 10 between it and the wall of the body. Then, larger dust separated from air flow by the revolving action of the revolving blades 5a in the body 1 is guided into the collecting room 10 by means of receiving blades 11c to make revolution of the dust disappear and to make the dust fallen down by gravity into the dust collecting cylinder 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a cyclone type air cleaner which mainly centrifuges dust for a vehicle air cleaner.

[0002]

2. Description of the Related Art A horizontal type cyclone type air cleaner is mainly used for engines of various types of industrial vehicles and large vehicles such as trucks. One example is shown in FIGS. 3 and 4. The parts other than the filter material, the seal material, and the dust discharge valve body are made of an iron plate or a synthetic resin such as nylon, polypropylene, etc., and are located in the central part of the end wall of the base end of the laterally cylindrical body 1 with an open end. Is provided with an outlet pipe 1b, and the inlet pipe 1b is provided on the peripheral wall near the end wall.
a is provided orthogonally to the axis (downward in the figure), and inside the body 1, a porous protective cylinder 3b is provided inside and outside of a filter medium 3a formed of filter paper or non-woven fabric in a chrysanthemum cylinder or roll shape, and A filter element e having an annular or dish-shaped end plate 3c attached to both ends is concentrically arranged and penetrates the bridge member 4 extending inside the body 1 and the dish-shaped end plate 3c, which is mounted inside the outlet pipe 1b. It is fixed to the body 1 by means of a screw member 7.

Further, in the body 1, a guide cylinder 5 is formed so as to surround one half of the filtration element e from the base end wall of the body 1.
Is provided, a large number of swirl vanes 5a are provided between the body 1 and the peripheral surface of the tip thereof, and a dust collecting cylinder 6 is attached downward at the tip of the open side of the body 1. A funnel-shaped discharge valve body 6a made of a flexible rubber material such as NBR and provided with a lip-shaped opening at the lower end is attached to the lower end portion, and a dish-shaped cover 2 is provided at the open end of the body 1. The clip member 8 is detachably fixed to the peripheral portion at a plurality of positions.

Thus, the outside air containing dust is taken into the body 1 from the inlet pipe 1a by the operation of the engine, guided by the guide cylinder 5 to the front side, and swirled by the swirl vanes 5a arranged on the tip. By the swirling action, relatively large and heavy dust contained in the air is separated, and is made to enter the dust collecting cylinder 6 along the wall surface of the body 1, and the air flow does not traverse the filtration element e. Then, it is further purified, is made a U-turn, is sent to the intake pipe side through the outlet pipe 1b, and the dust accumulated in the dust collecting cylinder 6 is discharged to the outside due to its own weight and the pulsating action generated in the intake pipe.

[0005]

By the way, in the above conventional air cleaner, the outside air taken in from the inlet pipe 1a is swirled by the swirl vanes 5a, and the dust contained therein is separated by centrifugal action to collect the dust. However, due to the design of the vehicle body, it is not possible to provide a plurality of dust collecting cylinders, and only one dust collecting cylinder 6 is provided below the body 1 and the dust collecting cylinder 6 is positively installed. Since there is no means for collecting the dust in the dust collecting cylinder 6, only the dust that happens to come to the upper portion of the dust collecting cylinder 6 is collected, and the dust that has passed therethrough cannot be discharged because it is collected in the front side of the cover 2. It is not effective and shortens the life of the cleaner.

Therefore, the present invention is designed as a cyclone type air cleaner so that the dust separated from the intake air by centrifugal action is positively introduced into the dust collecting cylinder, and is efficiently discharged to the outside without accumulating on the front side of the cover. The challenge is to be able to do so.

[0007]

Based on the above object, the present invention is provided with an inlet pipe and an outlet pipe on the base end wall side, and a discharge valve element made of a flexible rubber material at the lower end is attached to the lower side of the tip end portion. Inside the horizontal cylindrical body that has a dust collecting cylinder, a cylindrical filtering element and a guide cylinder that covers one half of the filter element are provided, a cover is provided at the open end, and a swirl vane is provided or provided on the guide cylinder. As an air cleaner that swirls the outside air taken in from the inlet pipe without changing the inside of the tip of the body,
It consists of a cylinder part that extends from the open end of the body to almost the center of the dust collecting cylinder and a flange part that extends from the base end to the peripheral wall of the body. One end edge of the flange part opens so as to face the swirling airflow. It is characterized in that an auxiliary cylinder provided with a required number of receiving blades and cutout windows in the circumferential direction is arranged, and a dust trapping chamber is formed between the auxiliary wall and the peripheral wall of the body tip portion.

[0008]

1 and 2 show an example of an air cleaner according to the present invention, the same parts as those of the conventional one will be described using the same reference numerals. An outlet pipe 1b is provided at the center of the end wall of the base end of the laterally cylindrical body 1 having an open front end (the right end in the figure), and the inlet pipe 1a is attached to the axial line at the portion near the base end wall of the peripheral wall. Inside the body 1, the porous protective cylinders 3b (there may be no outer ones) are inserted into the inside of the body 1 of the filter medium 3a, which is formed of chrysanthemum-shaped cylinders or rolls of filter paper or nonwoven fabric. A filter element e having an annular end plate 3c attached to one end and a dish-shaped end plate 3c attached to the other end is concentrically arranged.
A bridge member 4 attached to the outlet pipe 1b and extending into the body 1 with a sealing material 3d interposed between the base member and the base wall.
And the screw member 7 penetrating the plate-shaped end plate 3c, the body 1
It is detachably fixed to.

A guide cylinder 5 is arranged in the body 1 so as to surround one half of the filtration element e from the base end wall of the body 1, and a large number of guide cylinders are provided between the body 1 and the peripheral surface at the tip thereof. A swirl vane 5a is attached, a dust collecting cylinder 6 is attached downward to the open end of the body 1, and a lower end thereof is made of a flexible rubber material such as acrylonitrile butadiene rubber. A funnel-shaped discharge valve body 6a having a lip-shaped opening is attached.

By the way, according to the present invention, the following auxiliary cylinder 11 is arranged inside the open end of the body 1 at a distance from the guide cylinder 5, and is provided between the peripheral wall of the front end of the body 1. The dust capturing chamber 10 is formed in an annular shape, and the lower side thereof opens into the dust collecting cylinder 6.

The inner and outer diameters of the auxiliary cylinder 11 are substantially equal to the inner and outer diameter of the guide cylinder 5, and the length is from the center of the dust collecting cylinder 6 to the body 1.
Of the cylindrical portion 11a, which has a length substantially equal to the length of the open end of the body, and a flange portion 11b at the base end (the left end in the figure) which faces the peripheral wall of the body 1 and contacts the inner surface thereof.
As shown in FIG. 2, the receiver is tilted so that its two sides are substantially aligned with the swirl vane 5a of the guide cylinder 5, and one end edge is opened so as to face the air flow swirled by the swirl vane 5a. A blade 11c and a cutout window 11d inside the blade are provided in the required circumferential direction, and the cylindrical portion 11a is provided.
The tip end of the auxiliary tube 11 is sandwiched between the peripheral surface of the other end plate-shaped end plate 3c of the filtration element e and the peripheral bent groove of the cover 2 provided at the open end of the body 1, and the auxiliary cylinder 11 is fixed. The cover 2 is detachably attached to the body 1 with a plurality of clip members 8 mounted on the tip of the body 1 being hooked to the peripheral bending groove of the cover 2.

Of the above-mentioned components, the parts other than the filter material 3a, the sealing material 3d, and the discharge valve body 6a are made of iron plate or synthetic resin such as nylon, polypropylene or the like, and the inlet pipe 1a,
The outlet pipe 1b and the dust collecting cylinder 6 are fixed to the body 1 by means such as welding and bonding, and the auxiliary cylinder 11 has the tip of the cylinder portion 11a attached to the inner surface of the peripheral bending groove of the cover 2 by welding and bonding. Therefore, when the cover 2 is attached to the body 1, it is preferable that the cover 2 is fitted into the dish-shaped end plate of the filtration element e to be assembled.

Under such a structure, the outside air containing dust is taken into the body 1 from the inlet pipe 1a by the operation of the engine, is guided to the guide cylinder 5 and is directed forward.
By passing through a large number of swirl vanes 5a on the tip, it is swung in either the clockwise or counterclockwise direction, and relatively large and heavy dust in the air is separated by centrifugal action,
It advances toward the wall surface side of the body while rotating around the filtration element e, and reaches the tip end to the flange portion 11b of the auxiliary cylinder 11.
At that time, most of them enter the dust capturing chamber 10 through the cutout window 11d by being guided by many receiving blades 11c provided on the collar portion 11b.

Since the inside of the dust trap chamber 10 is cut off from the filter element e by the tubular portion 11a, there is no flow toward the center portion due to the intake action of the engine, so to speak, there is no wind, so it enters the chamber. The swirling motion due to the inertia of the dust also disappears, and the gravity falls exclusively along the wall surface of the body to enter the dust collecting cylinder 6 or the brim portion 11b.
The dust that hits against and does not enter the room also falls along the flange surface due to gravity and enters the dust collecting cylinder 6.

The air flow from which large dust has been removed as described above is further purified across the filter element e in the portion between the guide cylinder 5 and the auxiliary cylinder 11 and makes a U-turn to the intake pipe side from the outlet pipe 11b. The dust collected in the dust collecting cylinder 6 is appropriately discharged to the outside due to gravity and pulsation generated in the intake pipe.

In the illustrated example, a large number of short swirl vanes 5a are provided on the tip portion of the guide cylinder 5, but this is a series of screw-shaped members extending from the inlet pipe 1a side to the tip portion. Although the inlet pipe 1a is provided on the lower side, it is not provided on the upper side or on the upper or lower side, or on the body 1 so as to form a swirling air flow. It may be provided in the tangential direction, and when the inlet pipe 1a is provided in the tangential state, the swirl vane 5a does not necessarily have to be provided in the guide cylinder 5. Further, the dust collecting cylinder 6 may be inclined with respect to the body 1.

[0017]

As described above, the present invention is directed to a horizontal cyclone type air cleaner, which comprises a cylindrical body having a predetermined length and diameter and a collar extending from the base to the peripheral wall of the body. Is equipped with a receiving blade whose one edge is opposed to the swirling air flow and an auxiliary cylinder provided with a required number of notched windows in the circumferential direction, and forms a dust trapping chamber between the peripheral wall of the body tip portion. Therefore, the dust separated from the intake air by centrifugal action inside the body can be positively and reliably introduced into the dust collecting cylinder without accumulating on the front side of the cover as before, and can be efficiently discharged to the outside. , There is no fear of shortening the life of the element.

[Brief description of drawings]

FIG. 1 is a sectional view of an air cleaner according to the present invention.

FIG. 2 is a perspective view showing the relationship between a guide cylinder on the inlet pipe side and an auxiliary cylinder on the dust collecting cylinder side.

FIG. 3 is a cross-sectional view of a conventional air cleaner.

4 is a half sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Body 1a Inlet Pipe 1b Outlet Pipe 2 Cover 3a Filter Material 3b Protective Tube 3c End Plate 5 Guide Tube 5a Swivel Blade 6 Dust Collection Tube 6a Discharge Valve Body 10 Dust Capture Chamber 11 Auxiliary Tube 11a Tubular Section 11c Retaining Blade 11d Notch Window e Filtration element

Claims (1)

[Claims] 1. A horizontal cylindrical body having an inlet pipe and an outlet pipe on the base end wall side, and a dust collecting cylinder having a discharge valve body made of a flexible rubber material attached to the lower end on the lower end side thereof. In an air cleaner that swirls the outside air taken in from the inlet pipe, with a tubular filtration element and a guide tube covering the half part thereof, with a cover at the open end, and with or without swirl vanes on the guide tube, Inside the tip part of the body, there is a cylindrical part that extends from the open end of the body to almost the center of the dust collecting cylinder and a collar part that extends from the base end to the peripheral wall of the body. A cyclone-type air cleaner characterized in that a dust trapping chamber is formed between the peripheral wall of the body tip and an auxiliary cylinder in which a required number of receiving blades and notch windows are provided in the circumferential direction so as to face each other. .