JPH09242625A - Cyclone type air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent much dust from being stored on a cover side in a horizontal cyclone type air cleaner, by improving separating and discharging properties of bulky dust, and facilitating cleaning work. SOLUTION: In a horizontal cyclone type air cleaner 1, a filtering element 63 is stored, a passage 3 is arranged, a cylindrical casing 2 having a predetermined inside diameter, an inlet 64 which is arranged in a position eccentrically shifted from a center to one end side of the longitudinal direction of the casing 2 and applies a slewing flow to inflow air, and an exhausting valve 65 for downwardly exhausting dust centrifugally separated and an outlet for discharging air purified by the filtering element 63 which are arranged on the other side of the longitudinal direction of the casing 2, are arranged, and the other end of the casing 2 is formed to have larger inside diameter than a predetermined inside diameter. Hereby, a flow speed of air spirally slewed and led to flow into the casing 2, is slowed down in the other end side large diameter, volume is increased, coarse particulate dust is easily separated, and further, the coarse particulate dust is fallen into the case 2, introduced to a dust exhausting valve along a slant, and easily discharged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone type air cleaner, and more particularly to a cyclone type air cleaner used for engines for vehicles, industrial vehicles and construction machines.

[0002]

2. Description of the Related Art Conventionally, a cyclone type air cleaner for an engine is generally provided with an intake port in a tangential direction of an air cleaner body so that the sucked air is swirled between the air cleaner body and the filter element and a swirling flow is generated. Guide to the end surface of the air cleaner body,
A cyclone-type air cleaner for collecting dust having a coarse particle diameter by centrifugal separation is known from JP-A-63-253167 and others, and will be described with reference to FIGS. 9 to 12. First, the configuration of a vertical cyclone type air cleaner 50 will be described with reference to FIGS. 9 and 10. The vertical cyclone type air cleaner 50 has a cylindrical casing 51 and a casing.
It is composed of a filtration element 52 disposed in the sing 51 and a cover 53. The casing 51 generates a swirl flow between the casing 51 and the filtration element 52 to suck air into the casing 51, and an air outlet at the center of the upper end surface of the casing 51. And an outlet 55 that becomes Cover 53
In addition, the dust discharge hole 56 for discharging the dust centrifugally separated by the swirl flow, and the swirl flow flowing into the casing 51 from the inlet 54 are spirally guided to the dust discharge hole 56 for discharge. And an inclined portion 57 that operates.

Next, the operation will be described. The outside air is sucked into the casing 51 from the inlet 54. At this time, the inflowing air is accelerated by the inlet 54 and the guide plate 58, which are attached to the casing 51 in the tangential direction and at an inclination angle from obliquely above, and swirl spirally. Then, it flows toward the lower end surface of the casing 51. The spirally swirling air flows along an inclined portion 57 provided below the casing 51, and a dust discharge valve 59.
It is led to. The coarse particle dust contained in the air falls below the casing 51 along the inner wall surface by the action of the swirling flow and the action of gravity. Then, it is guided to the dust discharge hole 56 along the spiral guide plate 58. The coarse dust guided to the dust discharge hole 56 is discharged by opening the slit 59a of the discharge valve 59 due to intake pulsation when the engine is running at low speed.
The air from which the coarse dust has been centrifuged is filtered by the filtration element 52.
When passing through, it is cleaned by removing fine dust. The purified air passes through the central portion of the filter element 52, the outlet 55, and is sucked into the combustion chamber of the engine.

Next, referring to FIGS. 11 and 12, the structure of the horizontal cyclone type air cleaner 60 will be described. The horizontal cyclone type air cleaner 60 has a cylindrical shape, and a casing 61 having at least one end opened, a filtering element 63 accommodated in the casing 61 with a passage 62, and one end in the longitudinal direction of the casing 61. And,
An inlet 64 provided at a position eccentric from the center of the cylindrical shape and giving a swirling flow to the inflowing air, and a casing 61.
A discharge valve 65 which is provided at the other end side in the longitudinal direction of the above and discharges centrifugally separated dust by a swirling flow,
It comprises an outlet 67 for discharging the air purified by the filtering element 63, and a detachable cover 68 for closing one end of the casing 61. The casing 61 includes a cylindrical case 70, an end plate 71, and an end plate 7.
It has a guide plate 72 fixed to 1. As shown in FIG. 12, the casing 61 has an inlet 64 which serves as an air inlet in the tangential direction of the cylindrical wall and a casing 61.
An outlet 67 serving as an air outlet is provided at the center of the left end face of the. The inlet 64 and the outlet 67 are opened to the case 70, the inlet 64 communicates with the outside air, and the outlet 67 communicates with the intake port of the engine. Further, in the casing 61, a hollow cylindrical filter element 63 for filtering fine dust is arranged. The filtration element 6 is provided in the hollow portion.
A U-shaped support 73 is provided for fixing 3 to the casing 61 and for fixing the cover 68 on the right end surface of the casing 61 to the case 70. The left end of the U-shaped support 73 is fixed to the inner peripheral surface of the outlet 67 by spot welding or the like, the right end of the U-shaped support 73 is fixed by fastening with the filter element 63 and the wing nut 74, and the cover 68 is fitted into the case 70 to fix the wing nut. It is fixed with 75. A gasket 76 is sealed between the left end of the filtration element 63 and the end plate 71. A flow guide plate 73 is fixed to the cover 68. At the lower right end of the outer periphery of the case 70, a dust discharge hole 78 communicating with the outside is provided.
The dust discharge hole 78 is provided with a rubber dust discharge valve 65 having a slit.
The dust discharge valve 65 is provided with a slit 65a that is closed when the pressure applied to the dust discharge hole 78 becomes negative.

Next, a horizontal cyclone type air cleaner 6
The operation of 0 will be described. When the engine is started by connecting the outlet 67 to the intake port of the engine, the inlet 64
From the outside, the outside air is sucked into the casing 61. At this time,
As shown in FIG. 12, with respect to the casing 61, the inflowing air is accelerated by the guide plate 72 in the tangential direction, and spirally swirls toward the cover 68 side on the right side of the casing 61. Flowing. The air swirling spirally is casing 61.
Flows along a guide plate 77 provided on the right side of, and is guided to the dust discharge hole 78. Coarse dust contained in the air falls to the lower right part of the casing 61 along the inner wall surface by the action of the swirling flow. Then, it is guided to the dust discharge hole 78 along the guide plate 77. The coarse particle dust guided to the dust discharge hole 74 is discharged by the slit portion 65a of the discharge valve 65 that discharges dust due to intake air pulsation during low engine speed. The air from which the coarse dust has been centrifugally separated is cleaned by removing the fine dust when passing through the filter element 63. The purified air passes through the central portion of the filter element 63, the outlet 67, and is sucked into the combustion chamber of the engine.

[0006]

However, there are the following problems in the cases of the conventional vertical cyclone type air cleaner and horizontal type cyclone type air cleaner disclosed in Japanese Patent Laid-Open No. 63-253167 as described above. . The vertical cyclone type air cleaner has a problem that it is difficult to secure the lower space necessary for inspection and replacement when performing the inspection and replacement of the filtration element from below, and it is difficult to apply it to construction machinery. is there. Also, in order to improve the dust discharge effect, the spiral sloping part is provided, so the outer diameter of the casing becomes large, space is required, and the freedom of design layout is low, and mounting restrictions are limited. There is a problem that there is. The horizontal cyclone type air cleaner has a problem that the dust is not clogged uniformly in the longitudinal direction of the filter element and the dischargeability from the dust discharge port is poor. Since the dust discharge hole is on the cover side in the casing, the clogging of the filter element dust starts from the cover side and moves to the outlet. As shown in FIG. 11, the dust adhesion amount 79 is large on the cover side and small on the outlet side. Therefore, when the filter element is regularly inspected, a large amount of dust adhered 79 is accumulated on the cover side, and there is a misconception that the filter element has a life but is easily clogged. The element may be replaced. Further, since it is a horizontal type air cleaner, there is a problem that it is difficult to perform a cleaning operation for sweeping out dust accumulated in the case.

Focusing on the above-mentioned conventional problems, the present invention uses a structure of a horizontal cyclone type air cleaner having a simple structure to improve the separation property of coarse particle dust and the discharge property from a dust discharge port. Moreover, it is an object of the present invention to provide a solution to the problem that a large amount of dust is accumulated on the cover side by facilitating a cleaning operation for sweeping dust accumulated in the case.

[0008]

In order to achieve the above object, the first embodiment of the cyclone type air cleaner of the present invention is provided.
In the invention, the filter element is housed, and an annular passage is provided between the filter element and the filter element, and a cylindrical casing having a predetermined inner diameter and one end side in the longitudinal direction of the casing, and a cylindrical center. It is provided in a more eccentric position,
An inlet that gives a swirling flow to the inflowing air, an exhaust valve that is provided at the other end side in the longitudinal direction of the casing and that is provided below to exhaust dust centrifugally separated by the swirling flow, and an air purified by a filtering element In a cyclone type air cleaner with an outlet to discharge,
The other end of the casing has an inner diameter larger than a predetermined inner diameter. With such a structure, the air that spirally swirls and flows through the casing has a large flow velocity on the other end side of the casing, the flow velocity becomes slow, the volume increases, and the coarse particle dust is separated. It is easy to be discharged and is easily discharged from the dust discharge valve. Furthermore, the separated coarse particle dust falls into the case,
It is easily guided to the dust discharge valve along the slope and discharged.

According to the second aspect of the invention, a casing having a cylindrical shape and having at least one end opened, a filtering element housed in the casing having an annular passage, and one end in the longitudinal direction of the casing, and , An inlet provided at a position eccentric from the center of the cylindrical shape to give a swirling flow to the inflowing air, and dust provided at the other end side in the longitudinal direction of the casing and downward and centrifugally separated by the swirling flow. In a cyclone type air cleaner consisting of a discharge valve for discharging, an outlet for discharging the air purified by the filtration element, and a detachable cover that closes one end side of the casing, a lip that sweeps out dust accumulated at the other end of the casing. Will be attached to the cover.
With such a configuration, when the filter element is regularly cleaned and the cover is removed, the dust accumulated in the case can be easily swept out.

According to the third aspect of the invention, a casing having a cylindrical shape and having at least one end opened, a filtering element housed in the casing having an annular passage, and one end in the longitudinal direction of the casing, and , An inlet provided at a position eccentric to the center of the cylinder to give a swirling flow to the inflowing air, an outlet for discharging the air purified by the filtering element, and a detachable cover closing one end side of the casing. In the cyclone type air cleaner, the cover is attached with a discharge valve for discharging the dust centrifugally separated by the swirling flow, and a dust pan for storing dust in a part of which is opened to the passage in the casing. ing. With such a configuration, since the dust is provided on the service cover in the separate chamber, the separability of the dust is improved, the dust is easily discharged from the dust discharge valve, and the cleaning work is facilitated.

According to the fourth aspect of the invention, a casing having a cylindrical shape and having at least one end opened, a filtering element housed in the casing having a passage, and one end in the longitudinal direction of the casing and having a cylindrical shape. Of the cyclone, which is provided at a position eccentric from the center of the casing to give a swirling flow to the inflowing air, an outlet for discharging the air purified by the filtering element, and a detachable cover that closes one end of the casing. In the air cleaner, the casing houses a part of the filtration element in the longitudinal direction, and the cover houses the exposed filtration element and abuts and seals the casing on the outer diameter side of the filtration element, and It is assumed that the discharge valve for discharging the dust centrifugally separated by the swirling flow is attached.
With this configuration, when the service cover is attached or detached, the dust discharge valve is removed together with the cover, so that the dust can be reliably discharged. Also, in order to check the clogging status of the filter element, the most dust-collecting part can be removed when the service cover is removed, eliminating the misidentification that the filter is easily clogged, and the cleaning work is easy. it can. In addition, since the cover and the casing are separated from each other by a predetermined distance from the cover side of the casing, the space for removing the filter element is shortened, and the degree of freedom in design layout is increased. .

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment will be described in detail below with reference to FIG. The first embodiment is an example of a cyclone type air cleaner 1 in which the other end of the casing has an inner diameter larger than a predetermined inner diameter. FIG. 1 shows the overall configuration of an embodiment of a cyclone type air cleaner 1 of the present invention. The same parts as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted. In FIG. 1, a horizontal cyclone type air cleaner 1 houses a filtering element 63, and an annular passage 2 is provided between the filtering element 63 and the cylindrical casing 2 having a predetermined inner diameter. At one end side (A) in the longitudinal direction and at an eccentric position from the center of the cylinder, an inlet 64 that gives a swirling flow to the inflowing air and the other end side (B) in the longitudinal direction of the casing 2 are provided. Further, it has a discharge valve 65 provided below and discharging the dust centrifugally separated by the swirling flow, and an outlet 67 discharging the air purified by the filtering element 63, and the other end of the casing 2 has a predetermined inner diameter. The casing 2 has a large inner diameter D1 (Do <D1) changed from Do to a conical shape 6 and a detachable cover 4 that closes one end of the casing 2. That. Next, the operation will be described. With the above-described configuration, the air that spirally swirls and flows through the casing 2 has a low flow velocity at the large inner diameter D1 of the casing 2 on the cover 4 side, and
Filtering element 63 and large inner diameter D1 of casing 2
The volume increases, and coarse dust is easily separated and easily discharged from the dust discharge valve 65. Further, the separated coarse dust drops along the conical slope portion 6 of the casing 2, is guided to the dust discharge hole 78, and is easily discharged from the discharge valve 65.

Next, a second embodiment will be described in detail with reference to FIGS. 2, 3 and 4. The second embodiment is an example of a cyclone type air cleaner 10 in which a lip for sweeping out dust accumulated at the other end of the casing is attached to the cover. In addition,
Parts that are the same as in the prior art are given the same reference numerals and description thereof is omitted. 2 and 3, the horizontal cyclone type air cleaner 10 has a cylindrical shape, and a casing 61 having at least one end opened, and a filtration element 63 having an annular passage 62 in the casing 61. An inlet 64 provided at one end side in the longitudinal direction of the casing and at a position eccentric from the center of the cylindrical shape to give a swirling flow to the inflowing air, and at the other end side in the longitudinal direction of the casing and downwardly. A discharge valve 65 provided to discharge dust centrifugally separated by a swirling flow, and a filtration element 63.
Outlet 67 that discharges the air purified by
And a detachable cover 6 that closes one end of the casing 61.
The cover 68 is provided with a lip 11 for sweeping dust accumulated at the other end of the casing. A lip 11 for sweeping out dust is provided on the cover 68 and at the tip of the guide plate 12 to which the flow guide plate 12 is fixed. The lip 11 is made of rubber (or may be synthetic resin), and the tip of the lip 11 is in contact with the inner wall 13 of the case 70 and the entire circumference. The lip 11 and the guide plate 12 are joined together by a predetermined number of lip supports 14. Further, as shown in FIG. 4, a rubber lip 15 (or synthetic resin may be used) for sweeping out dust at the tip of the guide plate 12.
Is provided, the tip of the lip 15 is brought into contact with the inner wall 13 of the case 70, and an inflow hole 16 into which dust flows is provided above the lip 15. An UP ↑ mark 17 is marked on the cover 68 to direct the inflow hole 16 to the upper portion.
Next, the operation will be described. With the above configuration, when the filter element is regularly cleaned and the cover is removed, the dust accumulated in the case can be easily swept out. In the embodiment of FIG. 4, the air that spirally swirls and flows in the casing 61 is guided to the dust discharge hole 78 through the inflow hole 16. Since the lip 15 has a function of separating the coarse particle dust, the separability of the dust is improved, the dust is easily discharged from the dust discharge valve 65, and the cleaning work is facilitated. In addition, the misidentification that clogging is likely to occur is eliminated.

Next, a third embodiment will be described in detail with reference to FIGS. The third embodiment is an example of a cyclone type air cleaner 20 in which a dust pan for collecting dust is attached to a cover and a discharge valve for discharging dust is attached to the dust pan. The same parts as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted. 5 and 6, a horizontal cyclone type air cleaner 20 has a cylindrical shape and a casing 61 having at least one end opened, a filtration element 63 having an annular passage 62 in the casing, and a casing. An inlet 64 which is provided at one end side in the longitudinal direction of the and which is eccentric from the center of the cylindrical shape, and which gives a swirling flow to the inflowing air,
Outlet 67 that discharges the air purified by
And a removable cover 2 that closes one end of the casing 61.
In the cyclone type air cleaner 20 consisting of 1,
The cover -21 is a discharge valve 65 for discharging the dust centrifugally separated by the swirling flow, and a dust pan 22 in which a part is opened to the passage 62 in the casing 61 and for collecting the dust.
It has a structure in which and are attached. An inflow hole 23 through which dust flows in is provided in an upper portion of the cover 21, and a flow guide plate 77 is fixed to the cover 21. Further, since the inflow hole 16 is directed upward, the cover 21 is UP ↑
Mark 17 is marked. Next, the operation will be described. With the above-described configuration, the air that spirally swirls and flows through the casing 61 flows along the guide plate 77 provided on the right side of the casing 61, and the dust in the upper portion of the cover 21 is discharged. Is introduced into the dust discharge hole 78 through the ring-shaped dust pan 22. Discharge hole 7
The coarse particle dust guided to 8 is discharged by opening the slit portion 65a of the dust discharge valve 65 due to intake pulsation when the engine is running at low speed. By such an operation, since the dust pan is provided in the cover 21 for service in a separate room, the separability of dust is increased, the dust is easily discharged from the dust discharge valve 65, and the misidentification that the dust is easily clogged is eliminated, and The cleaning work becomes easier.

Next, a fourth embodiment will be described in detail with reference to FIGS. 7 and 8. The fourth embodiment is an example of a cyclone type air cleaner 30 in which a service cover and a casing are divided, and the division position is a position separated by a predetermined length from the cover side of the casing. The same parts as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted. In FIG. 7 and FIG. 8, a horizontal cyclone type air cleaner 30 has a cylindrical shape and a casing 31 having at least one open end.
A filtering element 63 housed in the casing having the passage 32, and provided at one end side in the longitudinal direction of the casing 31 and at a position eccentric from the cylindrical center,
An inlet 64 that gives a swirling flow to the inflowing air, an outlet 67 that discharges the air purified by the filtration element 63, and a detachable cover 33 that closes one end side of the casing 66, and the casing 31 includes the filtration element 63. The part in the longitudinal direction is exposed and stored to cover it.
33 is a structure in which the exposed filtration element 63 is housed, the outer diameter side of the filtration element 63 is brought into contact with the casing for sealing, and a discharge valve 65 for discharging dust centrifugally separated by a swirling flow is attached. It has become. As shown in FIG. 8, the casing 31 has a gasket receiver 3
4 is provided and fixed to the case 35 by spot welding or the like. The gasket 3 is provided between the case 35 and the cover 33.
It is sealed with 6. Next, the operation will be described. With the above configuration, the dust discharge valve 65 is removed together with the cover when the service cover 33 is attached and detached, so that the dust can be reliably discharged. Also, in order to check the clogging condition of the filtration element, the cover 33 for service is used.
When you remove it, you can remove the part where the most dust is collected, so the misidentification that it is easily clogged is eliminated, and
Easy cleaning work. Furthermore, by separating the cover and the casing from each other by a predetermined distance from the side of the casing, the space for removing the filtration element is shortened and the degree of freedom in design layout is increased. The horizontal cyclone type air cleaner 30 can be easily mounted.

[0016]

As described above, according to the present invention,
In the horizontal cyclone type air cleaner, a part of the casing on the cover side in the axial direction has a large diameter, so that the separation of coarse dust is improved and the discharge is improved by the dust discharge valve. Further, since the dust cover is provided on the service cover, the discharge property of the dust accumulated in the case is improved. Furthermore, the provision of a dust pan on the service cover improves the separability of dust, makes it easier to discharge the dust from the dust discharge valve, and allows the service cover to be easily attached and removed, resulting in easy cleaning work. become. In addition, the service cover and the casing are separated from each other by a predetermined length so that the cleaning work can be facilitated and the space for removing the filter element 62 can be shortened. The degree of freedom in design is increased, and as a result, the cyclone type air cleaner can be easily installed. Improves the separability of the coarse particle dust and discharge from the dust discharge port,
In addition, the cleaning work for sweeping out the dust accumulated in the case is facilitated, and as a result, the problem of misidentification that clogging easily occurs is solved.

[Brief description of drawings]

FIG. 1 is a first of a horizontal cyclone type air cleaner of the present invention.
The cross-sectional view of an Example is shown.

FIG. 2 is a second of the horizontal cyclone type air cleaner of the present invention.
The cross-sectional view of an Example is shown.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a third embodiment of the horizontal cyclone type air cleaner of the present invention.
The cross-sectional view of an Example is shown.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a fourth embodiment of the horizontal cyclone type air cleaner of the present invention.
The cross-sectional view of an Example is shown.

FIG. 8 is an enlarged detailed view of a P portion of FIG.

FIG. 9 shows a cross-sectional view of a prior art vertical cyclone air cleaner.

10 shows a perspective view of FIG.

FIG. 11 shows a cross-sectional view of a prior art horizontal cyclone air cleaner.

FIG. 12 shows a left side view of FIG.

[Explanation of symbols]

 1, 10, 20, 30 Horizontal cyclone type air cleaner 2, 31, 61 Casing 3, 32, 62 Passage 11 Lip 21, 33, 68 Cover 22 Dust pan 63 Filter element 64 Inlet 65 Discharge valve 67 Outlet

Claims (4)

[Claims] 1. A cylindrical casing having a predetermined inner diameter for accommodating a filtration element and having an annular passage between the filtration element and the filtration element; Of the inlet provided at a position eccentric from the center of the casing for giving a swirling flow to the inflowing air, and at the other end side in the longitudinal direction of the casing, and at the lower part, for discharging dust centrifugally separated by the swirling flow. A cyclone type air cleaner having a valve and an outlet for discharging air purified by a filtration element, wherein the other end of the casing has an inner diameter larger than a predetermined inner diameter. 2. A casing having a cylindrical shape, at least one end side of which is open, a filtration element accommodated in the casing having an annular passage, and one end side of the casing in the longitudinal direction and having a cylindrical shape. Of the inlet provided at a position eccentric from the center of the casing for giving a swirling flow to the inflowing air, and at the other end side in the longitudinal direction of the casing, and at the lower part, for discharging dust centrifugally separated by the swirling flow. In a cyclone type air cleaner consisting of a valve, an outlet for discharging the air purified by the filter element, and a detachable cover that closes one end of the casing, a lip for sweeping dust accumulated at the other end of the casing is covered. Cyclone type air cleaner characterized by being attached to the. 3. A casing having a cylindrical shape, at least one end side of which is open, a filtration element accommodated in the casing having an annular passage, and one end side of the casing in the longitudinal direction and having a cylindrical shape. Cyclone type that consists of an inlet provided at a position eccentric from the center of the casing that gives a swirling flow to the inflowing air, an outlet that discharges the air purified by the filtering element, and a removable cover that closes one end of the casing. In the air cleaner,
The cover is a discharge valve for discharging the dust centrifugally separated by the swirling flow, and a part is opened to a passage in the casing,
Also, a cyclone type air cleaner characterized in that a dust pan for collecting dust is attached. 4. A casing having a cylindrical shape, at least one end side of which is open, a filtration element which has a passage in the casing and is accommodated, and one end side of the casing in the longitudinal direction, which is closer to the center of the cylinder. In a cyclone type air cleaner that is provided at an eccentric position and has an inlet that gives a swirling flow to the inflowing air, an outlet that discharges the air purified by a filtering element, and a detachable cover that closes one end side of the casing. , The casing houses a part of the filtering element in the longitudinal direction, and the cover houses the exposed filtering element, and abuts and seals the casing on the outer diameter side of the filtering element. A cyclone-type air cleaner having a discharge valve attached to discharge centrifugally separated dust.