JP3264783B2 - Oil mist collector with centrifugal collection function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the technical field of an oil mist collector for separating and collecting oil mist (oil fume) generated at the time of grinding or cutting by an NC lathe or a multi-axis automatic lathe. More specifically, the present invention relates to an oil mist collector having a centrifugal collection function capable of exhibiting an excellent collection effect.

[0002]

2. Description of the Related Art An oil mist generated when performing metal grinding or metal cutting in a machine factory or the like and performing a cleaning operation using oil has conventionally been disclosed in, for example, Japanese Patent Laid-Open No.
No. 256, Japanese Utility Model Laid-Open No. 4-87721, etc. use an oil mist collector, or
For example, the dust is collected and removed by using an electric dust collector as disclosed in Japanese Utility Model Publication No. 1-18195.

[0003] However, in the case of the former oil mist collector, there is a problem that oil mist adheres to the filter and clogging is liable to occur. Cleaning is very troublesome, there is a problem in terms of maintenance, and the structure is complicated and expensive, and furthermore, the use of electrodes makes it impossible to cope with water-soluble cutting oil.

Therefore, conventionally, for example, Japanese Utility Model Publication No. 58-327
As disclosed in Japanese Patent Publication No. 30 or Japanese Utility Model Publication No. 58-32731, a filter for collecting mist is formed into a rotary drum structure, and the mist is coarsened (agglomerated) by passing through the rotary filter. Then, an oil mist collector was considered, in which coarse mist was blown off by a centrifugal force of a rotary filter toward an oil adsorption filter provided on the outer periphery to be adsorbed, separated and collected.

[0005]

However, in all of the rotary oil mist collectors described in the above publications, a fan for sucking mist-containing air is mounted inside a rotary filter formed in a drum structure. Because the mist-containing air sucked by the rotation of the fan is in direct contact with the fan before passing through the rotary filter, the mist adheres to the fan and hinders rotation, and the mist is collected. There is a problem that maintenance is very troublesome because the capacity must be reduced and the fan must be cleaned frequently.In addition, since the rotary filter is mounted sideways inside the casing, Among the mist collected by the oil absorption filter by rotation, especially the ceiling side (upper side) of the rotary filter
When the mist trapped in the oil absorption filter is saturated and drops, there is a problem that the mist re-adheres to the rotary filter.

In addition, since the fan and the motor for rotating the rotary filter must be mounted outside the filter chamber where the rotary filter is mounted, that is, outside the casing, the collector must be mounted. There is also a problem that the entire device becomes large.

Therefore, the technical problem of the present invention is to minimize the amount of mist that comes into direct contact with the fan and to prevent re-adhesion of the collected mist, thereby achieving excellent suction for a long time. An object of the present invention is to provide an oil mist collector of a centrifugal type, which can exhibit force and mist collecting ability and is made compact as a whole.

[0008]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

The mist-containing air sucked into the inside of the main body from the air suction port passes through a rotary filter in the form of a drum attached to the inside of the main body so that the mist is adhered and aggregated, and then the aggregated mist is removed from the rotary filter. In the oil mist collector configured to be blown off and collected by the oil absorption filter provided on the outer periphery by the centrifugal force of

(1) A filter chamber in which the rotary filter is horizontally rotatably accommodated in the main body, a fan chamber in which a fan for sucking mist-containing air into the main body, and an exhaust chamber are respectively provided. An oil adsorbing plate is provided on the inner peripheral surface of the fan chamber, on which the air sucked by the rotation of the fan collides, while being vertically connected in sequence from the bottom through a partition plate with an open vent at the center. In addition, an outlet for collecting and discharging mist flowing down is provided at the bottom of the main body.

(2) An air suction port is opened laterally on one side of the main body, and an outer wall of a filter chamber is located inside the air suction port, and mist-containing air sucked into the main body from the air suction port is introduced. Collision with the outer wall of this filter room.

(3) A motor mounted inside a casing provided with a rotary filter and a fan mounted on one rotary shaft, and the rotary shaft is cut into the rotary filter made in a drum shape. To be directly connected to the drive unit.

(4) The outer surface of the rotary filter is constituted by a drum disk having a large number of holes and having an opening ratio of 50 to 60%.
A filter having an outer surface made of a soft sponge-like filter medium is mounted, and a gap between an outer surface of the rotary filter and an oil absorption filter provided on an outer periphery thereof is narrowed.

(5) Providing guide vanes on the bottom surface of each partition plate that partitions between the filter chamber, the fan chamber, and the exhaust chamber, for guiding air sucked and exhausted by rotation of the fan toward a central vent. .

(6) An outflow hole through which the collected mist flows downward is provided on the bottom surface of the filter chamber and on the outer side of the partition plate separating the filter chamber and the fan chamber.

(7) The upper and lower insertion pieces of an eliminator with an oil adsorbent having a substantially channel-shaped cross section are fitted into the upper and lower surfaces of an air suction port provided in the main body, and a large number of eliminators are sucked into the air. A large number of fitting grooves which can be arranged side by side in an alternately meshed state toward the inside and outside of the mouth are recessed, and among these many fitting grooves, toward the inside of the air suction port. A difference is made between the length of the fitting groove for the eliminator alone to be fitted and the length of the fitting groove of the eliminator alone to be fitted outward.

[0017]

Each of the means described in the above (1) to (7) operates as follows.

According to the means described in the above (1), the fan for sucking the mist-containing air into the main body is provided not on the inside of the rotary filter but on the upper side thereof separately from the filter chamber accommodating the filter. Installed inside the chamber to prevent the mist-containing air from directly touching the fan, and the fan comes in contact with the air that has separated and collected the oil mist using an oil absorption filter provided on the outer periphery of the rotary filter. Therefore, the amount of oil mist adhering to the fan is reduced as much as possible, enabling stable operation for a long time, and the mist-containing air in which the oil mist is collected by the oil absorption filter is further increased. Since the rotation of the fan vigorously collides with the oil adsorbing plate on the outer periphery to collect the oil mist again, it is possible to further improve the collecting performance of the oil mist.

According to the means described in the above (2), the mist-containing air sucked into the main body from the air suction port by the rotation of the fan is caused to collide with the outer wall of the filter chamber located inside the air suction port. Thus, the oil mist is separated and collected before the oil absorption filter and the oil absorption plate collect, so that the performance of collecting the oil mist can be further improved.

According to the means described in the above (3), since the rotary filter and the fan are mounted on one rotary shaft and this rotary shaft is directly connected to the drive section of the motor, one motor is provided. Can rotate both the rotary filter and the fan at the same time, and since this motor is mounted with the fan cut into the rotary filter where the fan is not mounted, the motor does not travel to the outside of the main body, so , Making it possible to make the entire oil mist collector compact.

According to the means described in the above (4), a large number of holes are formed in the outer surface of the rotary filter so that the opening ratio is 5%.
When the rotary filter is rotated, centrifugal force causes a soft sponge-shaped filter attached inside to bleed out from each hole and the oil provided on the outer surface and the outer periphery of the rotary filter. Since the interval between the suction filter and the filter is made narrow, the protrusion of the filter that has been extracted within this narrow interval effectively agitates the air within the interval. This makes it possible to make efficient contact with the oil absorption filter on the outer periphery and to remarkably improve oil mist collecting performance.

According to the means described in the above (5), the air flow swirled by the rotation of the fan and the rotary filter is guided by the guide vanes provided on the bottom surface of each partition plate, and swirled from the filter chamber into the fan chamber. And then guided by the guide blades from the filter chamber to the exhaust chamber, so that the mist-containing air is efficiently sucked into the body by the rotation of the fan, and the oil mist is reliably separated. Enable to collect.

According to the means described in the above (6), the oil adsorbing filter and the oil adsorbing plate adhere to the oil adsorbing plate and become saturated, and the oil mist dripping from the filter and the adsorbing plate is formed in the main body and the partition plate. Since the oil mist falls substantially linearly downward from the outflow hole, the oil mist can be discharged without re-adhering to the rotary filter.

According to the means described in (7), the mist-containing air sucked into the main body from the air suction port by the rotation of the fan first collides with the eliminator provided with the oil adsorbent provided in the suction port. In addition, a considerable amount of oil mist is collected, and the length of the eliminator single-piece groove provided on the upper and lower surfaces of the air suction port is different, so that the eliminator alone is not fitted in the opposite direction. The eliminator with excellent trapping properties, in which a large number of eliminators are arranged side by side so as to mesh with each other in an orderly manner, is easily and accurately constructed at the air suction port. Make it possible.

As described above, the technical problems described above can be solved by the above-described means, and the problems of the conventional technology can be solved.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the above-described oil mist collector having a centrifugal collection function according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a side view for explaining the appearance of an oil mist collector according to the present invention, FIG. 2 is a perspective view showing a part of the oil mist collector, and FIG. FIG. 1 is a side sectional view for explaining the structure, and in these drawings, the reference numeral 1 generally designates a main body of an oil mist collector having a vertical structure. Air inlet opening at 2
T is a drain receiver provided on the bottom surface of the air suction port 2;
N is a tightening screw for attaching the mouth 2a of the air suction port 2 to the mouth 1b of the main body 1 via packing, and 3 is an intermediate case body 4.
An upper case body provided with exhaust ports 3a... Attached to the upper surface of the main body 1 through T. The interior of the upper case body is constituted by an exhaust chamber 3H, and the lower intermediate case body 4T is constituted by a fan chamber 4H. Further, the intermediate case body 4T has a fitting port 4Ta at the lower end thereof detachably fitted to the upper end port 1a of the main body 1 as shown in FIG.

1Z is a cylindrical casing formed so as to bite upward from the bottom side into the center of the inside of the main body 1;
Inside the casing 1Z, a motor base 1X, which is also formed in a cylindrical shape with a flange 1Y protruding from the peripheral surface fixed to the bottom surface of the casing 1Z, is mounted concentrically. Motor 4M is fixed,
Further, the leg base 1T attached to the motor base 1X supports the entire body 1, that is, the entire oil mist collector, in the upright state shown in FIGS.

In FIG. 3, reference numeral 4R denotes a mounting plate for fixing the motor 4M in a suspended state inside the motor base 1X. The mounting plate 4R is provided on the upper end surface of the rotating shaft 4 of the motor 4M projecting from the upper surface of the mounting plate 4R. A fan 4F is fixed using a fixing plate 4a, and a rotary filter 7 formed in a drum shape as a whole is attached to a lower end portion of the rotary shaft 4. When the motor 4M rotates the rotary shaft 4, Fan 4F and rotary filter 7
Are configured to rotate integrally within the fan chamber 4H described above and a filter chamber described later, respectively.

Further, in the drawings, reference numeral 6 denotes a cylindrical filter chamber provided concentrically around the above-mentioned casing 1Z inside the main body 1, and an inner periphery of a cylindrical portion 6a of the filter chamber 6. An oil absorption filter 6b whose inside is covered with a coarse mesh 6c is fitted into the surface so as to be freely inserted and removed, and the rotary filter is provided inside the housing whose outer periphery is surrounded by the oil absorption filter 6b. 7 is configured to be rotated by the motor 4M, while the bottom opening 6H of the filter chamber 6 widens greatly inside the rotary filter 7, and the mist-containing air sucked from the air suction port 2 is drawn. As shown by an arrow shown in FIG. 3, the mechanism is guided to the inside of the rotary filter 7.

Reference numeral 6T denotes an outer wall of the cylindrical portion 6a constituting the filter chamber 6, and the outer wall 6T is located inside the air inlet 2 which is opened laterally. Before the rare air containing mist enters the inside of the rotary filter 7, it collides with the outer wall 6T to separate and collect the oil mist, and the oil mist collected (attached) to the outer wall 6T in this way. Is a mechanism that is sequentially dropped downward along the guide plate 6X that is suspended from the bottom.

FIGS. 4, 5 and 6 are a plan view and a front view of the rotary filter 7, and FIG.
This rotary filter 7, which is a cross-sectional view of an X-ray and has a drum shape as shown in the figure, has a large number of holes 7b and a hole opening ratio of 50 to 60%. The above-described rotary shaft 4 is provided on the upper and lower surfaces of the cylindrical body 7a.
A top plate 7X having a shaft hole 7H formed therein and a bottom plate 7Y having a large opening entirely fixed with rivets 7R, and an inner peripheral surface formed with a large number of holes 7b. Filter material 7c as soft as sponge fixed to base cloth 7d
And a flange 7Z provided on the outer periphery of the bottom plate 7Y with the large opening supports the bottom surface of the soft filter medium 7c from below.

The rotary filter 7 constructed as described above is provided with the filter chamber 6 as shown in FIGS.
A small distance L inside the oil absorption filter 6b provided inside
(Specifically, an interval of about 10 to 20 mm) is attached concentrically and rotatably by the rotating shaft 4 of the motor 4M, and passes through the filter medium 7c when the rotary filter 7 rotates. The centrifugal force causes the mist-containing air to vigorously collide with the oil-absorbing filter 6b formed on the outer periphery, and the sponge-like soft filter medium 7c is similarly centrifugally formed into the cylindrical body 7a as shown in FIG. Project from the holes 7b formed at a ratio of about 60% at the outer circumferential interval L, and the projecting tips 7cT... Are configured to agitate the airflow within the interval L.

In FIG. 3, reference numeral 4E denotes a vent opening at the center of a partition plate 8 for partitioning between the fan chamber 4H and the filter chamber 6 provided below the fan chamber 4H. The vortex air flow after the mist is collected by colliding with the oil absorption filter 6b due to the centrifugal force generated by the rotation of the rotary filter 7 is intensively guided to the central vent 4E and sent to the fan chamber 4H. A plurality of guide vanes 8a are attached, and the airflow swirled by the rotation of the fan 4F is also concentrated on the central vent 4S on the bottom surface of the partition plate 4Y that separates the exhaust chamber 3H from the fan chamber 4H. A plurality of guide blades 4 </ b> X are provided for guiding the air into the exhaust chamber 3 </ b> H.

Further, in FIGS. 2 and 3, reference numeral 9 denotes an oil suction plate provided in the above-described fan chamber 4H so as to surround the outer periphery of the fan 4F. The mist-containing air, which turns outward by rotation and collides vigorously, is made to adhere to the oil adsorbent provided on the inner surface 9a thereof without being reflected, and the adhesion is promoted by the surface tension and dropped when saturated. Although it is structured, the oil adsorbing plate 9 may be constituted by only a metal plate without using an oil adsorbing material.

Further, in the figure, reference numeral 5a denotes an inclined bottom surface in the main body 1, and oil mist collected on the outer wall 6T of the filter chamber 6 is transmitted to the guide plate 6X when saturated, and is sequentially dropped on the inclined bottom surface 5a. The oil mist collected by the oil absorption filter 6b provided on the peripheral surface of the rotary filter 7 described above, and furthermore, the oil mist collected by the oil absorption plate 9 is dropped when the oil mist is saturated. 8 and through the outflow holes 8b and 6V provided in the bottom surface of the filter chamber 6, respectively, and successively flow down to the inclined bottom surface 5a, and then discharged from the discharge port 5 to an external container or the like. ing.

In FIG. 2, what is generally indicated by reference numeral 10 is an eliminator provided inside the air suction port 2 described above. This eliminator 10 has a substantially channel structure as shown in FIG. As shown in FIG. 13, a large number of eliminators 10T are formed in such a manner that they are alternately meshed with each other from the inside and the outside in the air inlet 2 as shown in FIG.

As shown in FIGS. 11 and 12, each of the eliminators 10T, which are formed in a substantially channel structure, has a fitting piece 10b projecting downward at the lower end of leg pieces 10a formed at both left and right ends. Each of these fitting pieces 10b is formed in a number of fitting grooves 2L and 2S formed in the upper surface 2U and the bottom surface 2R inside the air inlet 2 as shown in FIGS. By fitting them into each other, they are mounted side by side as shown in FIGS.

That is, one of the plurality of fitting grooves 2L and 2S is formed slightly longer toward the air suction port 2 as shown in FIG. 2S is formed to be slightly shorter than this, and has a mechanism for determining the direction in the fitting direction of the eliminator unit 10T by the difference in the length of the groove dimension.

The configuration of the fitting grooves 2L and 2S will be described in detail. One fitting groove 2L formed slightly longer and the other fitting groove 2S formed shorter are shown in FIG. Eliminator 10
In mounting the T, first, a plurality of eliminator units 10T are used by using the other fitting grooves 2S formed in each short side.
Are fitted side-by-side with the openings facing the inside of the air suction port 2 (downward in FIG. 13), and then a plurality of holes are formed by using one of the longer insertion grooves 2L. Of the eliminators 10T are arranged side by side with their openings facing the outside of the air inlet 2 (upward in FIG. 14).
As shown in FIG. 3, they can be arranged side by side in an alternately engaged state.

In FIG. 1, reference numeral 20 denotes a terminal box.
In FIG. 9, 2b... Indicate screw holes for tightening screws 2N.
In FIGS. 10 and 13, reference numeral 2H denotes a protrusion which regulates the fitting direction of the eliminator unit 10T. One of the fitting grooves 2L formed longer by the presence of the protrusion 2H has an eliminator 2H. The single unit 10T is restricted so as not to be fitted downward in FIG.

The oil mist collector having a centrifugal collection function according to the present invention has the structure as described above.
The mist-containing air sucked into the main body 1 from the air suction port 2a by the rotation of the fan 4F by the motor 4M is shown in FIG.
3, an eliminator 10 provided inside the air suction port 2 and an oil mist are sequentially separated and captured on the outer wall 6T of the filter chamber 6 located inside the air suction port 2. Is collected and then enters the inside of the rotary filter 7 of the filter chamber 6, where it is rectified by the filter medium 7c of the rotary filter 7 rotating together with the fan 4F, and the oil mist is agglomerated and gradually coarsened, Further, under the centrifugal force caused by the rotation of the rotary filter 7, the coarse oil mist vigorously collides with the oil absorbing filter 6b on the outer periphery, where the oil mist is separated and collected again.

In this separation and collection, the distance L between the drum peripheral surface of the rotary filter 7 and the oil absorption filter 6b on the outer periphery is used.
Is very narrow, 10-20 mm,
In accordance with the rotation of the rotary filter 7, the tip 7cT of the sponge-like soft filter medium 7c protrudes from the holes 7b... As shown in FIG. Separation and collection of the oil mist by the oil absorption filter 6b can be performed more effectively.

FIG. 14 shows the opening ratio of the drum of the rotary filter 7, that is, the opening ratio (%) of the holes 7b formed in the cylindrical portion 6a, and the collection of the oil mist by the oil absorption filter 6b. A diagram showing the relationship of the efficiency (%) shows that the most effective drum opening ratio is 50 to 60% from this relationship.

The air current in which the oil mist has been collected by the oil absorption filter 6b as described above becomes a swirling air current as shown in FIG.
Are guided by the guide blades 8a as shown by the arrow shown in FIG. 4 and flow into the fan chamber 4H, where the rotation of the fan 4F vigorously collides with the outer oil absorbing plate 9 and the remaining oil mist adheres and collects again. Thereafter, the air is guided by the guide blades 4X and exhausted from the exhaust chamber 3H to the outside.

The oil mist collected and adhered to the oil absorption filter 6b and the oil absorption plate 9 drops when they become saturated, and the oil mist is dropped out of the bottom surface of the partition plate 8 and the filter chamber 6 respectively. And 6V, and is discharged from the discharge port 5 provided on the bottom surface of the main body 1 to an external container or the like.

[0047]

As described above, according to the oil mist collector having the centrifugal collection function according to the present invention, separation, rectification and collection are performed a total of five times including the eliminator arranged side by side at the inlet. Because it is formed, almost all oil mist can be removed from the airflow with high performance, and it is possible to prevent oil mist from adhering to the fan. It does not reattach to the filter, the eliminator can be easily and accurately arranged side by side at the air inlet, and the whole can be made compact by incorporating the motor inside the body. In combination with this, it is extremely suitable for collecting various oil mist.

[Brief description of the drawings]

FIG. 1 is a side view showing an appearance of an oil mist collector according to the present invention.

FIG. 2 is a partially broken perspective view showing the inside of the oil mist collector.

FIG. 3 is a side sectional view illustrating an internal configuration of the oil mist collector.

FIG. 4 is a plan view of a rotary filter.

FIG. 5 is a front view of the rotary filter.

FIG. 6 is a sectional view taken along the line XX of FIG. 4;

FIG. 7 is a partial cross-sectional configuration diagram illustrating a state in which a rotary filter is fitted inside an oil absorption filter provided in a filter chamber.

FIG. 8 is an explanatory diagram of a main part showing a state in which a sponge-like filter medium protrudes outward by centrifugal force.

FIG. 9 is a front view of the air suction port viewed from the inside.

FIG. 10 is a plan sectional view showing a partial cross section of an air suction port.

FIG. 11 is a perspective view of an eliminator constituting the eliminator alone.

FIG. 12 is a partial cross-sectional side view of the eliminator alone.

FIG. 13 is a cross-sectional plan view of an air suction port portion illustrating an attached state of an eliminator alone.

FIG. 14 is a diagram showing a relationship between a drum opening ratio and a collection efficiency.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Air inlet 2L, 2S Fitting groove 3H Exhaust chamber 4 Rotating shaft 4M Motor 4H Fan chamber 4F Fan 4Y Partition plate 4X Guide blade 5 Outlet 6 Filter chamber 6b Oil absorption filter 6V Outlet hole 6T Outer wall 7 of filter chamber Rotary filter 7a Cylindrical body 7b Hole 7c Filter media such as sponge L Interval 8 Partition plate 8a Guide vane 8b Outflow hole 9 Oil absorption plate 10 Eliminator 10T Eliminator alone

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryuichi Nakane 1-6-2 Shintoda, Hamamatsu-shi, Shizuoka Prefecture Amano Inside Tsuda Techno Works (56) References Full-scale open 48-58576 (JP, U) Full-scale open Showa 57-12213 (JP, U) Actually open Showa 61-75815 (JP, U) Actually open Showa 61-1553839 (JP, U) Actually open Showa 62-109728 (JP, U) Actually open Showa 62-199115 (JP) , U) JP-B-46-3560 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01D 46/26 B01D 45/08 B01D 45/14

Claims (7)

(57) [Claims] 1. A mist-containing air sucked into an inside of a main body from an air suction port is passed through a drum-shaped rotary filter attached to the inside of the main body, thereby adhering and aggregating the mist, and then rotating the agglomerated mist. In an oil mist collector configured to be blown off and collected on an oil absorption filter provided on the outer periphery by centrifugal force of a type filter, a filter chamber in which the rotary filter is horizontally rotatably housed in the main body. The fan chamber containing the fan for sucking the mist-containing air into the main body, and the exhaust chamber are sequentially formed vertically from the bottom through partition plates each having a vent opening at the center, while the above-described ones are formed vertically. An oil suction plate is provided on the inner peripheral surface of the fan chamber where the air sucked by the rotation of the fan collides, and a discharge port for collecting and discharging mist flowing down is provided at the bottom of the main body. Oil mist collector provided with a centrifugal separator collecting function, characterized in that digit. 2. An air suction port is opened laterally on one side of the main body, an outer wall of a filter chamber is positioned inside the air suction port, and mist-containing air sucked into the inside of the main body from the air suction port is supplied to the air suction port. 2. The oil mist collector according to claim 1, wherein the oil mist collector is configured to collide with an outer wall of the filter chamber. 3. A motor mounted inside a casing provided with a rotary filter and a fan mounted on a single rotary shaft, and the rotary shaft cut into the interior of a rotary filter formed in a drum shape. 2. The oil mist collector having a centrifugal collection function according to claim 1, wherein the oil mist collector is directly connected to a drive unit. 4. The outer surface of a rotary filter is constituted by a drum disk having a large number of holes and having an opening ratio of 50 to 60%. 2. A centrifugal separator according to claim 1, wherein a filter made of a soft sponge-like filter material is attached, and a gap between an outer surface of the rotary filter and an oil absorption filter provided on an outer periphery thereof is narrowed. Oil mist collector with collection function. 5. A guide vane for guiding air sucked and exhausted by rotation of a fan toward a central ventilation port is provided on a bottom surface of each partition plate for partitioning a filter chamber, a fan chamber, and an exhaust chamber. The oil mist collector having a centrifugal collection function according to claim 1, characterized in that: 6. An outflow hole for allowing collected mist to flow downward is provided at a bottom surface of the filter chamber and at an outer portion of a partition plate for separating between the filter chamber and the fan chamber. Oil mist collector with a centrifugal collection function. 7. An air suction port provided in a main body, on both upper and lower surfaces,
The upper and lower insertion pieces of an eliminator with an oil adsorbent having a substantially channel-shaped cross section are fitted, and a large number of eliminators are arranged side by side in an alternately engaged state toward the inside and outside of the air suction port. A large number of insertion grooves that can be recessed, and among these many insertion grooves, an insertion groove for an eliminator alone that is inserted toward the inside of the air suction port,
2. The oil mist collector having a centrifugal separation collecting function according to claim 1, wherein a length dimension of a fitting groove of the eliminator unit fitted outward is different.