KR101444338B1 - Local ventilator with swirler - Google Patents

Abstract

A vortex-type local exhaust system having a swirler is disclosed. The disclosed vortex type local exhaust system comprises a disk-like rotary plate member provided at a suction end of an exhaust pipe and generating a vortex by rotation, having a first air intake hole communicating with an exhaust pipe in a central region, A swirler including a plurality of blades installed on at least one surface of the swirler, a drive unit connected to the swirler swing member to rotate the swirl member and the plurality of blades, And restricts the formation of a vortex in a part of the area.

Description

[0001] The present invention relates to a local ventilator with swirler,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a local exhaust system for sucking contaminated air and discharging the polluted air to the outside, more particularly, to a vortex type local exhaust system .

Local exhaust systems are generally used in factories, homes and restaurants where pollutants are generated in large quantities. Especially when partial pollutants are generated on the floor far away from the exhaust port or other installations, It can be useful in cases where there is a sudden occurrence of pollution.

However, the conventional local exhaust system used for this purpose has various problems. That is, in the conventional local exhaust system, as the pollution source moves away from the exhaust pipe, the efficiency of sucking and removing the pollutant is drastically lowered. As a result, it is preferable that the local exhaust system is installed as close as possible to the pollutant generation site. And the worker's movements.

In order to overcome the problems of the conventional local exhaust system, a local exhaust system has been developed which uses a vortex to expand the exhaust area and improve the exhaust efficiency. Korean Patent No. 10-0529002, No. 10-0821295, No. 10 -0873521 and 10-0873522 disclose examples of such vortex type local exhaust systems.

The vortex type local exhaust system generally has a swirler for vortex formation on the inlet side of the exhaust pipe. When the sweller is rotated, a donut-shaped vortex is generated around the exhaust flow rising toward the intake port of the exhaust pipe, and the vortex thus generated divides the area where the pollutant is generated and the area where the pollutant is not generated By acting as an air curtain, the contaminated air can be sucked into the exhaust pipe more efficiently in a wider area.

As described above, in the conventional vortex type local exhaust system, a vortex is formed around the circumference of the exhaust flow rising toward the intake port of the exhaust pipe along the swing center axis of rotation.

However, in the case where there is an obstacle such as a wall adjacent to the periphery of the sweller, the airflow formed by the rotation of the sweller may interfere with the wall to form a normal vortex, There is a problem in that it obstructs the normal exhaust flow rising along the rotation center axis of the sweller.

When the contaminated area is wide, for example, a large number of swirlers are required to cover a large contaminated area in a large-scale pollution-causing working area of a factory, a smoking area such as an airport or a station. However, in this case, the vortices generated by the adjacent swellers interfere with each other, so that normal vortices are not formed and the exhaust efficiency is lowered, or turbulence is generated, which hinders normal exhaust flow.

Patent Document 1: Korean Patent No. 10-0529002 (Registered on November 09, 2005) Patent Document 2: Korean Patent No. 10-0821295 (registered on Apr. 03, 2008) Patent Document 3: Korean Patent No. 10-0873521 (Registered on December 04, 2008) Patent Document 4: Korean Patent No. 10-0873522 (Registered on December 04, 2008)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vortex type local exhaust system having a means for partially restricting the formation of vortex due to swirlers.

According to an aspect of the present invention,

A circular plate-shaped rotary plate member provided at a suction end of the exhaust pipe to generate a vortex by rotation and having a first air intake hole communicating with the exhaust pipe in a central region; A sweller including a wing of

A driving unit installed on the exhaust pipe and connected to the rotating plate member of the swirler to rotate the rotating plate member and the plurality of blades; And

And limiting means for limiting the formation of a vortex in the partial region by being installed in a partial region in the circumferential direction around the rotation center axis of the swirler.

The restriction means is fixed to the exhaust pipe so as to be fixed in a partial region in a circumferential direction around the rotation center axis of the swirler, and the air flow generated by the plurality of vanes is blocked, It is possible to limit the formation of vortices.

In addition, the restriction means may include a shielding plate for shielding the airflow in the partial region, and a fixing member for fixing the shielding plate to the exhaust pipe.

The plurality of wings may include a plurality of lower wings provided on a lower surface of the rotating plate member, and the limiting means may be disposed adjacent to the plurality of lower wings while maintaining an interval with the plurality of lower wings, And a fixing member for fixing the blocking plate to the exhaust pipe.

The blocking plate may include a lower blocking plate horizontally disposed adjacent to a lower portion of the plurality of lower vanes and a plurality of lower blocking plates disposed vertically adjacent to an outer side of the plurality of lower vanes, One end of the fixing member may be coupled to the upper end of the outer side blocking plate and the other end may be fixed to the outer circumference of the exhaust pipe.

The lower plate may be formed in a concave groove shape having a flat surface portion of the central region and a sloped surface portion of the outer edge region, the plurality of lower blades being closely attached to the sloping surface portion, One end of the fixing member may be coupled to the outer end of the blocking plate and the other end of the fixing member may be fixed to the outer circumferential surface of the exhaust pipe.

The plurality of blades may include a plurality of lower blades provided on a lower surface of the rotating plate member and a plurality of outer blades provided on an outer circumferential surface of the rotating plate member. The limiting means may include a plurality of lower blades and a plurality of outer blades And a fixing member disposed adjacent to the plurality of lower vanes and the plurality of outer vanes to keep the space between the lower vanes and the plurality of outer vanes to block the air flow and to fix the blocking plate to the exhaust tube.

The shield plate may include a lower shield plate disposed horizontally adjacent to a lower portion of the plurality of lower wings and a plurality of lower shield plates disposed vertically adjacent to the outer sides of the plurality of outer wings while being connected to outer ends of the lower shield plate. One end of the fixing member may be coupled to the upper end of the outer side blocking plate and the other end may be fixed to the outer circumference of the exhaust pipe.

The plurality of blades may include a plurality of upper blades installed on the upper surface of the rotating plate member. The sweller may be installed on the upper and inner portions of the plurality of upper blades, Further comprising guiding means for guiding the airflow generated by the plurality of upper blades by forming a passage, wherein the rotating plate member is provided with a plurality of second air inlets communicating with the air flow passages around the first air inlets Wherein the guide means comprises an upper guide member attached to an upper end of the plurality of upper wings and covering the plurality of upper wings, and a lower guide member disposed between an outer peripheral surface of the exhaust pipe and an inner end of the plurality of upper wings, A side guide member fixed to the upper surface of the rotating plate member and having an upper end fixed to the upper guide member, And a blocking plate disposed adjacent to the outlet of the air flow path formed between the outer edge of the rotating plate member and the outer edge of the upper guide member and the plurality of second air intake holes to block air flow, And a fixing member for fixing the blocking plate to the exhaust pipe.

The blocking plate may include a lower shield plate disposed horizontally adjacent to a lower portion of the outlet of the airflow passage formed between an outer edge of the rotating plate member and an outer edge of the upper guide member and a lower portion of the second air intake hole, And an outer side shield plate vertically disposed adjacent to an outer side of the outlet of the air flow path while being connected to an outer end of the lower shield plate, wherein one end of the fixing member is coupled to an upper end of the outer side shield plate, And the other end can be fixed with respect to the outer peripheral surface of the exhaust pipe.

The fixing member may be a rod-like member, and a plurality of fixing members may be disposed between the blocking plate and the outer circumferential surface of the exhaust pipe at intervals in the circumferential direction.

The fixing member may be a plate connected between the blocking plate and the outer peripheral surface of the exhaust pipe.

A ring-shaped fixing bracket is fixed to the outer circumferential surface of the exhaust pipe, and the fixing member is fixed to the exhaust pipe by being coupled to the fixing bracket.

In addition, a hood in the form of a hat is fixed to the upper portion of the swirler in the exhaust pipe, and the fixing member can be fixed to the hood.

The plurality of blades may include a plurality of upper blades installed on the upper surface of the rotating plate member. The sweller is attached to the upper ends of the plurality of upper blades to cover the plurality of upper blades, Further comprising a guide member for guiding an air flow formed by the plurality of upper wings by forming an air flow passage between the outer edge of the rotation plate member and the outer edge of the guide member A first blocking plate disposed adjacent to the outlet of the formed air flow passage for blocking the air flow discharged through the outlet of the air flow passage, and a second blocking plate fixed to the exhaust pipe, The air flow passage being disposed adjacent to an inlet of the air flow passage formed between the inner circumferential surfaces, A second blocking plate for blocking inflow of air into the furnace, and a fixing member connecting and fixing the first blocking plate to the second blocking plate.

The first blocking plate may further include a lower blocking plate disposed horizontally adjacent to a lower portion of the outlet of the airflow passage and a second blocking plate adjacent to an outer side of the outlet of the airflow passage, Wherein the second blocking plate is horizontally disposed adjacent to an inlet of the airflow passage and fixed to an outer circumferential surface of the exhaust pipe, and one end of the fixing member is connected to the outer blocking plate, And the other end can be coupled to the outer end of the second blocking plate.

The rotation plate member is formed with a plurality of second air intake holes communicating with the air flow passage around the first air intake hole, and the lower shield plate of the first shield plate has a plurality of second air intake holes And can extend horizontally to the bottom.

A ring-shaped fixing bracket is fixed to the outer peripheral surface of the exhaust pipe, and the second blocking plate is fixed to the exhaust pipe by being coupled to the fixing bracket.

According to the vortex type local exhaust ventilation apparatus according to the embodiments of the present invention, since the vortex is formed only in the region where the restriction means for restricting the formation of the vortex due to the swirler is not provided, The conventional problems that are caused by interfering with vortices generated respectively in the wall interfering or adjacent sweller can be solved.

Further, when the contaminated area is wide, for example, a large number of local exhaust ventilation apparatuses are installed at predetermined intervals along the rim of the contaminated area, The swirler is provided with the restriction means so as to be positioned inside the contaminated area based on the center axis of rotation so that the swirl formed by the swirlers of each local exhaust device is formed only outside the contaminated area based on the swirl center axis of rotation can do. Therefore, by using a plurality of local exhaust apparatuses according to the present invention, it is possible to form an air curtain in the form of an air building completely surrounding the contaminated area along the rim of the wide contamination area, It is possible to effectively seal from the uncontaminated area of the contaminated area and also to improve the exhaust efficiency from the contaminated area.

1 is a vertical sectional view showing a vortex type local exhaust system according to a first embodiment of the present invention.
2 is a horizontal sectional view taken along the line A-A 'shown in Fig.
3 is a horizontal sectional view showing a modification of the limiting means shown in Fig.
4 is a perspective view showing another modification of the restriction means shown in Fig.
5 is a vertical sectional view showing still another modification of the limiting means shown in Fig.
6 is a vertical cross-sectional view illustrating a vortex type local exhaust system according to a second embodiment of the present invention.
7 is a vertical sectional view showing a vortex type local exhaust system according to a third embodiment of the present invention.
8 is a vertical sectional view showing a vortex type local exhaust system according to a fourth embodiment of the present invention.
Fig. 9 is a perspective view showing a modification of the limiting means shown in Fig. 8. Fig.
10 is a vertical sectional view showing a vortex type local exhaust system according to a fifth embodiment of the present invention.
11 is a vertical cross-sectional view showing a vortex type local exhaust system according to a sixth embodiment of the present invention.

Hereinafter, a vortex type local exhaust system according to embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same elements.

FIG. 1 is a vertical sectional view showing a vortex type local exhaust system according to a first embodiment of the present invention, and FIG. 2 is a horizontal sectional view taken along the line A-A 'shown in FIG.

1 and 2, a vortex-type local exhaust system 100 according to a first embodiment of the present invention includes a swirler 110 installed at a suction end of an exhaust pipe 10 to generate a vortex by rotating, A driving unit 120 connected to the swirler 110 to rotate the swirler 110 and a part 130 for limiting the formation of the swirling flow by the swirler 110 .

The exhaust pipe 10 is a pipe for sucking contaminated air through the opened suction end and discharging the polluted air to the outside, and may be formed of various kinds of pipes such as a flexible pipe or a metal pipe generally known. The contaminated air can be sucked into the exhaust pipe 10 by a natural negative pressure or can be forcibly sucked by the operation of the exhaust fan.

The swirler 110 includes a rotating plate member 111 rotatably mounted on a suction end of the exhaust pipe 10 and a plurality of lower blades 112 provided on a lower surface of the rotating plate member 111 do.

The rotary plate member 111 has a circular plate shape and has a constant thickness and a diameter larger than the diameter of the exhaust pipe 10. The rotating plate member 111 is installed at the suction end of the exhaust pipe 10 so that the center axis of rotation thereof coincides with the central axis of the exhaust pipe 10. A first air intake hole 118 communicating with the exhaust pipe 10 is formed in the central region of the rotary plate member 111. The contaminated air sucked from the exhaust area passes through the first air intake hole 118, (10).

The rotating plate member 111 is coupled to the driving unit 120 and rotated. The rotation shaft member 111 is provided with a protruding boss-shaped rotation shaft coupling portion 125. The rotation shaft coupling portion 125 is provided with a rotation shaft (not shown) 123 are connected. Specifically, a rotation shaft insertion hole 126 is vertically formed at the center of the rotation shaft coupling part 125, and the rotation shaft 123 of the driving motor 121 is inserted into the rotation shaft insertion hole 126, And is tightly coupled by a screw 127. The first air intake hole 118 is formed around the rotation shaft coupling portion 125 and the rotation shaft coupling portion 125 includes a plurality of connection portions 119 radially crossing the first air intake hole 118, And is connected to the rotating plate member 111 and supported.

The plurality of lower vanes 112 rotate together with the rotating plate member 111 to generate an air flow, which forms a vortex F1 as described later. The plurality of lower vanes 112 are fixed to the lower surface of the rotary plate member 111, that is, the exhaust-gas confronting surfaces so as to be radially disposed around the first air intake holes 118. Each of the plurality of lower vanes 112 has a shape rising from the lower surface of the rotating plate member 111 and extending in the radial direction.

The driving unit 120 is connected to the swirler 110 to provide power for rotating the swirler 110. The driving unit 120 includes a driving motor 121 disposed on the center axis of the exhaust pipe 10, a motor support member 122 supporting the driving motor 121 in the exhaust pipe 10, a driving motor 121 (Not shown). As described above, the rotation shaft 123 is coupled to the rotation shaft coupling part 125 provided at the rotation center of the rotation plate member 111 of the swirler 110.

However, the driving unit 120 having the above-described structure is illustrative and may have various configurations that can provide power for rotating the sweller 110, and the mounting position is not limited to the above. For example, the driving unit 120 may be installed inside or outside the exhaust pipe 10 by a means such as a bracket, and may rotate the swirler 110 through a power transmitting means such as a belt or a gear.

1, when the exhaust operation is performed through the exhaust pipe 10, the exhaust pipe 10 not only receives the contaminated air from the exhaust region but also the surrounding air Air is also drawn into the exhaust pipe 10. When the swirler 110 is rotated by the driving unit 120, the plurality of lower blades 112 push the surrounding air outward in the radial direction. Shaped swirling flow F1 is formed at the lower edge of the swirler 110 by the flow of air and a normal exhaust flow F2 from the exhaust area toward the exhaust pipe 10 is formed at the lower center of the swirler 110 Is formed. The vortex F1 thus formed serves as an air curtain for separating the area where the pollutant is generated and the area where the pollutant is not generated, thereby allowing the contaminated air to be sucked into the exhaust pipe 10 more efficiently in a wider area .

However, when there are obstacles such as the wall 20 adjacent to the perimeter of the sweller 110, or a plurality of the swellers 110 are adjacent to each other to cover a wide contaminated area, 110 interferes with the wall 20 or vortexes generated by adjacent ones of the swellers 110 interfere with each other to prevent the formation of a normal vortex so that the exhaust efficiency is reduced, A problem occurs that the normal exhaust flow F2 is obstructed.

In order to solve such a problem, the local exhaust apparatus 100 according to the present invention has a restriction means 130 for partially restricting the formation of the vortex caused by the swirler 110.

Specifically, the limiting means 130 restricts the formation of the vortex F1 in a part of the circumferential direction around the rotational center axis of the swirler 110. [ For example, as shown in FIG. 1, when the swirler 110 of the local exhaust system 100 is installed adjacent to the wall 20, the restriction means 130 may be disposed in an area adjacent to the wall 20 So that the vortex F1 is not formed. On the other hand, when the two swirlers 110 are installed adjacent to each other, the limiting means 130 can be configured such that the vortex F1 is not formed in the area between the two swirlers 110. In addition, the limiting means 130 may be used for various purposes, as will be described later.

Hereinafter, the limiting means 130 will be described as an example where the swirler 110 of the local exhaust system 100 is installed adjacent to the wall 20. [

Specifically, the limiting means 130 is installed in a region in the circumferential direction around the rotational center axis of the swirler 110, for example, in a region adjacent to the wall 20. The limiting means 130 may be installed in an angular range of about 60 to 120 degrees in the circumferential direction about the rotational center axis of the swirler 110, for example, about 90 degrees as shown in Fig. 2 .

The limiting means 130 includes a blocking plate 131 disposed adjacent to the lower and outer sides of the plurality of lower vanes 112 of the swirler 110 to block air flow, And a fixing member 133 for fixing to the exhaust pipe 10.

While the swirler 110 rotates, the blocking plate 131 must be kept in a fixed position without rotating. Accordingly, the blocking plate 131 must block the airflow without interfering with the lower vane 112 of the rotating sweller 110, so that the blocking plate 131 must be positioned as close as possible to the lower vane 112 .

Specifically, the blocking plate 131 includes a lower blocking plate 131a disposed horizontally below the plurality of lower vanes 112 to block airflow formed by the plurality of lower vanes 112 from being directed downward, And a plurality of lower vanes 112 connected to the outer end of the lower blocking plate 131a and disposed vertically adjacent to the outer side of the plurality of lower vanes 112 to block the air flow formed by the plurality of lower vanes 112 from being directed outward And an outer side blocking plate 131b.

The fixing member 133 fixes the blocking plate 131 to the outer circumferential surface of the exhaust pipe 10 so as to keep the blocking plate 131 at a predetermined position, And a plurality of the exhaust pipes 10 may be disposed at predetermined intervals between the upper end of the exhaust pipe 10 and the outer peripheral surface of the exhaust pipe 10. Each of the plurality of fixing members 133 may be formed of a rod-like member, and one end thereof is coupled to the upper end of the outer side blocking plate 131b by welding or other fastening means, As shown in Fig. 3, the fixing member 133 may be formed of one plate connected between the upper end of the outer side blocking plate 131b and the outer circumference of the exhaust pipe 10. As shown in FIG.

3 is a horizontal sectional view showing a modification of the limiting means shown in Fig.

3, when there is a wall 20 orthogonal to the periphery of the sweller 110 of the local exhaust system 100, that is, at the corner portion of the orthogonal wall 20, The limiting means 130 is arranged at an angle range of about 150 to 210 degrees in the circumferential direction around the rotation center axis of the sweller 110, for example, about 180 degrees as shown in FIG. 3 Can be installed.

The fixing member 133 may be a plate connected between the upper end of the outer side blocking plate 131b and the outer circumference of the exhaust pipe 10. [ One end of the fixing member 133 is coupled to the upper end of the outer side blocking plate 131b by welding or other fastening means and the other end is fastened to the outer circumferential surface of the exhaust pipe 10 with a fastening screw 134 Can be fixed by using. 2, the fixing member 133 may be composed of a plurality of rod-shaped members arranged at a predetermined interval between the upper end of the outer-side blocking plate 131b and the outer peripheral surface of the exhaust pipe 10 have.

4 is a perspective view showing another modification of the restriction means shown in Fig.

Referring to FIG. 4, the restriction means 130 may further include a ring-shaped fixing bracket 137 fixed to the outer circumferential surface of the exhaust pipe 10. The fixing bracket 137 may be fixed to the outer circumferential surface of the exhaust pipe 10 using a fastening screw 138. A plurality of bolt holes 139 may be formed in the fixing bracket 137 along the circumferential direction.

As described above, when the fixing bracket 137 is provided on the outer peripheral surface of the exhaust pipe 10, one end of each of the plurality of fixing members 133 is coupled to the upper end of the outer side blocking plate 131b, May be fixed to the fixing bracket 137 using bolts 135. [ 3 may also be fixed to the exhaust pipe 10 by using the fixing bracket 137. [0051] As shown in FIG.

It is easy to install the fixing member 133 on the exhaust pipe 10 by using the fixing bracket 137 as compared with the case where the fixing member 133 is directly fixed to the outer circumferential surface of the exhaust pipe 10, It can be much more convenient to move the installation position.

5 is a vertical sectional view showing still another modification of the limiting means shown in Fig.

Referring to FIG. 5, a hood 30 may be installed at the lower end of the exhaust pipe 10 together with the sweller 110. In this case, the hood 30 is disposed on the upper part of the swirler 110 and does not rotate with respect to the exhaust pipe 10. One end of the fixing member 133 of the limiting means 130 is coupled to the upper end of the outer side blocking plate 131b and the other end of the fixing member 133 is fixed to the hood 30 using the fastening screw 134. [ have.

According to the vortex type local exhaust system 100 according to the first embodiment of the present invention having the configuration shown in Figs. 1 to 5, the swirler 110 is rotated, and the air flows The formation of the vortex F1 is restricted because the flow of air directed downward and outward is blocked in the region where the blocking plate 131 of the limiting means 130 is provided, that is, in the region adjacent to the wall 20, The vortex F1 is formed only in the region S where the blocking plate 131 is not provided as shown in FIGS. Therefore, the conventional problem caused by the interference of the airflow formed by the rotation of the sweller 110 with the adjacent wall 20 can be solved.

In addition, in the vortex forming region S, the vortex F1 serves as an air curtain surrounding the exhausting region where contaminants are generated. In the region where the blocking plate 131 is installed, the wall 20 surrounds the exhausting region do. That is, the exhaust area is completely blocked from the outside where the contaminants are not generated by the vortex F1 and the wall 20, so that the contaminated air generated in the exhaust area can be more efficiently sucked into the exhaust pipe 10 .

6 is a vertical cross-sectional view illustrating a vortex type local exhaust system according to a second embodiment of the present invention.

Referring to FIG. 6, the vortex type local exhaust system 200 according to the second embodiment of the present invention also includes a swirler 210 installed at a suction end of the exhaust pipe 10 to generate vortex by rotating, The swirler 210 includes a driving unit 120 connected to the swirler 210 to rotate the swirler 210 and a swirler 210 to partially restrict the swirling of the swirler 210.

The exhaust pipe 10 and the driving unit 120 are the same as those of the first embodiment described above and the coupling structure of the driving unit 120 and the later described rotating plate member 211 is also the same as that of the first embodiment, The description will be omitted to avoid repetition.

The swirler 210 includes a rotating plate member 211 rotatably mounted on a suction end of the exhaust pipe 10 and a plurality of lower blades 212 disposed on a bottom surface of the rotating plate member 211 do.

The rotating plate member 211 is in the shape of a disk having a diameter larger than the diameter of the exhaust pipe 10, and the lower surface 215 thereof is formed into a concave groove shape with a predetermined depth. The rotating plate member 211 is installed at the suction end of the exhaust pipe 10 such that the rotational center axis of the rotating plate member 211 coincides with the central axis of the exhaust pipe 10. A first air intake hole 218 communicating with the exhaust pipe 10 is formed in the central region of the rotary plate member 211. The polluted air sucked from the exhaust area passes through the first air intake hole 218, (10). The first air intake hole 218 is formed around a rotation shaft coupling portion 125 for coupling the rotation plate member 211 to the driving portion 120. The rotation shaft coupling portion 125 is formed around the first air intake hole 218 are connected to and supported by the rotary plate member 211 by a plurality of connecting portions 219 which radially cross the upper plate 218.

As described above, the lower surface 215 of the rotary plate member 211 facing the exhaust area is formed in a concave groove shape. The lower surface 215 may be composed of a flat surface portion 215a of the central region and an inclined surface portion 215b of the outer edge region. That is, the plane portion 215a is formed around the first air intake hole 218, and the slope portion 215b is formed around the plane portion 215a. The inclined surface portion 215b is formed so as to be downward, that is, the diameter gradually increases toward the exhaust area.

The plurality of lower vanes 212 rotate together with the rotating plate member 211 to generate an air flow, which forms a vortex F1 as described later. The plurality of lower vanes 212 are fixed to the lower surface 215 of the rotating plate member 211, that is, the exhaust-gas facing area, so as to be radially disposed around the first air intake hole 218. Each of the plurality of lower vanes 212 has a shape raised from the lower surface 215 of the rotating plate member 211 and extending in the radial direction. The height of each of the plurality of lower vanes 212 may be the same as the depth of the lower surface 215 of the rotary plate member 211.

Each of the plurality of lower vanes 212 is installed in close contact with an inclined surface 215b of the lower surface 215 of the rotary plate member 211. [ Each of the plurality of lower vanes 212 may extend in a radial direction from the inclined surface portion 215b to a portion of the planar portion 215a.

Also in the local exhaust apparatus 200 having the above-described configuration, a donut-shaped vortex F1 serving as an air curtain is formed at the lower edge of the sweller 210 by the airflow generated by the plurality of lower vanes 212, And a normal exhaust flow F2 from the exhaust area toward the exhaust pipe 10 is formed at the lower center of the sweller 210. [

Particularly, since the edge portion of the lower surface 215 of the rotary plate member 211 of the swirler 210 is formed of the inclined surface portion 215b, the flow of air forming the vortex F1 is inclined toward the exhausting region, The vortex F1 produced along the lower side has a shape elongated toward the exhausting region. Therefore, the polluted air far from the exhaust pipe 10 can be more easily sucked into the exhaust pipe 10.

In order to solve such a problem, the local exhaust apparatus 200 is also provided with a swirler 210 for swirling by the swirler 210, The restricting means 230 for restricting the formation of the restricting portion 230 is provided.

Specifically, the limiting means 230 restricts the formation of the vortex F1 in a part of the circumferential direction around the rotation center axis of the swirler 210. The limiting means 230 includes a shielding plate 231 disposed adjacent to a lower portion of a plurality of lower wings 212 of the swirler 210 to block air flow, 10).

The detailed configuration, arrangement, and action of the blocking plate 231 and the fixing member 233 are substantially the same as those of the first embodiment described above, so a detailed description thereof will be omitted. However, in the present embodiment, since the air flow generated by the plurality of lower vanes 212 in the structure of the sweller 210 is not directed to the outside of the sweller 210, the blocking plate 231 has a plurality of lower portions It is only required to prevent the air flow formed by the plurality of lower vanes 212 from being directed downward. The fixing member 233 fixes the blocking plate 231 to the outer circumferential surface of the exhaust pipe 10 which is not rotated so that the blocking plate 231 is held at a predetermined position, And the other end may be fixed to the outer circumferential surface of the exhaust pipe 10 by using a fastening screw 234. [

The fixing member 233 may be formed of a plurality of rod-like members arranged at a predetermined interval as shown in Fig. 2, and also may be formed as an outer side of the blocking plate 231 And one plate connected between the end portion and the outer circumferential surface of the exhaust pipe (10).

The limiting means 230 may also include the ring-shaped fixing bracket 137 shown in FIG. 4, and the fixing member 233 may be fixed to the hood 30 as shown in FIG.

7 is a vertical sectional view showing a vortex type local exhaust system according to a third embodiment of the present invention.

7, the vortex type local exhaust system 300 according to the third embodiment of the present invention also includes a swirler 310 installed at a suction end of the exhaust pipe 10 to generate a vortex by rotating, A driving unit 120 connected to the roller 310 to rotate the swirler 310 and a limiting unit 330 for partially limiting the formation of swirls by the swirler 310.

The exhaust pipe 10 and the driving unit 120 are the same as those of the first embodiment described above and the coupling structure of the driving unit 120 and the later described rotating plate member 211 is also the same as that of the first embodiment, The description will be omitted to avoid repetition.

The swirler 310 includes a rotating plate member 311 rotatably mounted on a suction end of the exhaust pipe 10, a plurality of lower blades 312 provided on a lower surface of the rotating plate member 311, And a plurality of outer blades 313 provided on the outer circumferential surface of the member 311. The sweller 310 includes a plurality of outer blades 313 in the sweller 210 of the second embodiment shown in Fig. 6 and includes a plurality of outer blades 313, Since the configuration is the same as that of the second embodiment, I will explain.

The rotating plate member 311 is in the form of a disk having a diameter larger than the diameter of the exhaust pipe 10, and a first air suction hole 318 communicating with the exhaust pipe 10 is formed in the central region thereof. The first air intake hole 318 is formed around the rotation shaft coupling portion 125. The rotation shaft coupling portion 125 includes a plurality of connection portions 319 radially crossing the first air intake hole 318, And is connected to and supported by the rotary plate member 311.

The lower surface 315 of the rotating plate member 311 is formed in a concave groove shape with a predetermined depth and may include a flat surface portion 315a of the central region and an inclined surface portion 315b of the outer edge region.

The plurality of lower vanes 312 rotate together with the rotating plate member 311 to generate an air flow, which forms a vortex F1 as described later. The plurality of lower vanes 312 are installed in close contact with the inclined surface 315b of the lower surface 315 of the rotating plate member 311 so as to be radially arranged around the first air intake hole 218. [

The plurality of outer vanes 313 rotate together with the rotating plate member 311 to form a horizontal air flow F3 and are arranged radially along the outer periphery of the rotating plate member 311. [ The plurality of outer vanes 313 have a shape extending in the radial direction from the outer circumferential surface of the rotary plate member 311 and may be fixedly installed on the outer circumferential surface of the rotary plate member 311 by using fixing screws . The plurality of outer wings 313 may have the same height as the plurality of lower wings 312.

In the local exhaust apparatus 300 having the above-described configuration, the donor-shaped vortex F1 acting as an air curtain is formed at the lower edge of the sweller 310 by the air flow generated by the plurality of lower vanes 312, And a normal exhaust flow F2 from the exhaust area toward the exhaust pipe 10 is formed at the lower center of the swirler 310. [

Since the edge of the lower surface 315 of the rotary plate member 311 of the swirler 310 is formed by the inclined surface portion 315b as in the second embodiment, And the vortex F1 thus generated has a shape that is elongated downward, that is, toward the exhaust area. Therefore, the polluted air far from the exhaust pipe 10 can be more easily sucked into the exhaust pipe 10.

In particular, a plurality of outer vanes 313 form an air flow F3 in a substantially horizontal direction above the vortex F1. As the air flow F3 causes the pressure of the portion to be lowered, the lower vortex F1 is pulled up toward the lower pressure side, that is, upward. Accordingly, the vortex F1 is formed in a shape elongated and widened as compared with the conventional one, and the exhaust flow F2 inside the vortex F1 has a wider width, so that not only the exhaust efficiency is improved but also the exhaust region Can be expanded.

In order to solve such a problem, the local exhaust system 300 is also provided with a vortex generator (not shown) by the swirler 310, A limiting means 330 is provided which partially limits the formation of the gas.

Specifically, the limiting means 330 restricts the formation of the vortex F1 in a part of the circumferential direction around the rotation center axis of the swirler 310. [ The limiting means 330 includes a blocking plate 331 disposed adjacent to a lower portion of the plurality of lower vanes 312 of the swirler 310 and an outer portion of the plurality of outer vanes 313 to block air flow, And a fixing member 333 for fixing the blocking plate 331 to the exhaust pipe 10.

The blocking plate 331 includes a lower blocking plate 331a disposed horizontally below the plurality of lower vanes 312 to block the air flow formed by the plurality of lower vanes 312 from being directed downward, The air flow F3 formed by the plurality of outer vanes 313 is vertically disposed adjacent to the outer side of the plurality of outer vanes 313 while being connected to the outer end of the lower blocking plate 331a, And an outer side blocking plate 331b.

The fixing member 333 fixes the blocking plate 331 to the outer circumferential surface of the exhaust pipe 10 which is not rotated so that the blocking plate 331 is held at a predetermined position, 331b by welding or other fastening means and the other end thereof can be fixed to the outer peripheral surface of the exhaust pipe 10 by using a fastening screw 334. [

The fixing member 333 may be composed of a plurality of rod-shaped members arranged at a predetermined interval as shown in FIG. 2, and may be formed of a rod- And one plate connected between the upper end portion and the outer circumferential surface of the exhaust pipe 10.

The limiting means 330 may include the ring-shaped fixing bracket 137 shown in FIG. 4, and the fixing member 333 may be fixed to the hood 30 as shown in FIG.

The specific arrangements and actions of the blocking plate 331 and the fixing member 333 of the restricting means 330 are the same as those of the first embodiment described above, so a detailed description thereof will be omitted.

8 is a vertical sectional view showing a vortex type local exhaust system according to a fourth embodiment of the present invention.

8, the vortex type local exhaust system 400 according to the fourth embodiment of the present invention also includes a swirler 410 installed at a suction end of the exhaust pipe 10 to generate a vortex by rotating, A driving unit 120 connected to the swirler 410 to rotate the swirler 410 and partially limiting the formation of the swirling flow by the swirler 410.

The exhaust pipe 10 and the driving unit 120 are the same as those of the first embodiment described above and the coupling structure of the driving unit 120 and the later described rotating plate member 411 is also the same as that of the first embodiment described above, The description will be omitted to avoid repetition.

The swirler 410 includes a rotating plate member 411 rotatably mounted on a suction end of the exhaust pipe 10, a plurality of upper blades 412 provided on an upper surface of the rotating plate member 411, And a guide member 413 for covering the upper blade 412 of the guide member 413.

The rotating plate member 411 has a circular plate shape and has a constant thickness and a diameter larger than the diameter of the exhaust pipe 10. The rotating plate member 411 is installed at the suction end of the exhaust pipe 10 such that its rotational central axis coincides with the central axis of the exhaust pipe 10. [ A first air suction hole 418 communicating with the exhaust pipe 10 is formed in the center region of the rotating plate member 411. The first air intake hole 418 is formed around the rotation shaft coupling portion 125. The rotation shaft coupling portion 125 includes a plurality of connection portions 419 radially crossing the first air intake hole 418, And is connected to and supported by the rotary plate member 411.

The plurality of upper blades 412 rotate together with the rotating plate member 411 to generate the air flow F3 and the air flow F3 forms a vortex F1 as described later. The plurality of upper blades 412 are fixed to the upper surface of the rotating plate member 411, that is, the exhaust pipe facing surface so as to be radially disposed along the circumference of the exhaust pipe 10. Each of the plurality of upper wings 112 has a shape rising from the upper surface of the rotating plate member 411 and extending in the radial direction.

The inner ends of the plurality of upper blades 412 are prevented from being rotated by the exhaust pipe 10 because the plurality of upper blades 412 rotate together with the rotating plate member 411 while the exhaust pipe 10 is fixed. So as to be spaced apart from the outer surface of the exhaust pipe 10 by a predetermined distance. The outer ends of the plurality of upper blades 112 are protruded by a predetermined length from the outer edge of the rotating plate member 411. That is, the plurality of upper blades 412 are formed such that the outer diameter thereof is larger than the outer diameter of the rotary plate member 411.

The guide member 413 is spaced apart from the upper surface of the rotating plate member 411 by a predetermined distance to form an air flow path between the upper surface of the rotating plate member 411 and the upper surface of the rotating plate member 411, And acts to guide the formed air flow F3.

Specifically, the guide member 413 is attached to the upper end of the plurality of upper wings 412 so as to cover the plurality of upper wings 412, and rotates together with the plurality of upper wings 412. That is, a plurality of upper blades 412 are fixedly installed between the rotating plate member 411 and the guide member 413, and they are rotated together.

The guide member 413 is formed in an annular shape having an inner diameter larger than the outer diameter of the exhaust pipe 10 so that a predetermined distance D is formed between the outer peripheral surface of the exhaust pipe 10 and the inner peripheral surface of the guide member 413 And air around the exhaust pipe 10 is sucked into the air flow passage formed between the rotating plate member 411 and the guide member 413 through the gap D. In addition, the guide member 413 may have an outer diameter larger than the outer diameter of the plurality of upper blades 412. The inlet of the air flow path is formed between the outer circumferential surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 413 and the air between the outer edge of the rotating plate member 411 and the outer edge of the guide member 413 An outlet of the flow passage is formed.

In order to increase the flow rate of the airflow F3 generated by the plurality of upper vanes 412, the height of each of the plurality of upper vanes 412 is gradually decreased from the center of rotation And the guide member 413 can also be formed so as to have a shape inclined downwardly toward the outer periphery, that is, inclined so as to gradually narrow the distance from the rotary plate member 411. [ Accordingly, the air flow path formed between the rotating plate member 411 and the guide member 413 becomes gradually narrower as the distance from the center of rotation becomes smaller. Therefore, air that is formed by the plurality of upper blades 412 and exits the air flow path The flow F3 is accelerated in flow rate and is guided by the inclined guide member 413 and formed in a downward inclined direction from the horizontal.

In the local exhaust apparatus 400 having the above-described configuration, when the exhaust operation is performed through the exhaust pipe 10, the exhaust flow F2 from the exhaust area into the exhaust pipe 10 is formed. In this state, when the swirler 310 is rotated by the driving unit 120, air flows into the air flow path between the rotating plate member 411 and the guide member 413 from the periphery of the exhaust pipe 10, The air thus introduced forms an air flow F3 in the outward direction by the plurality of upper blades 412. As described above, since the guide member 413 is formed to be inclined, the air flow F3 formed by the plurality of upper blades 412 is formed in a downward inclined direction from the horizontal direction, and the flow speed thereof is further increased.

A donut-shaped vortex F1 is formed outside the lower portion of the sweller 410 by the exhaust flow F2 as described above and the air flow F3 formed by the plurality of upper vanes 412. The vortex F1 thus formed serves as an air curtain for separating the area where the pollutant is generated and the area where the pollutant is not generated and the exhaust efficiency of the pollutant through the exhaust flow F2 inside the vortex F1 .

A plurality of upper blades 412 suck clean air around the exhaust pipe 10 above the swirler 410 to form an air flow F3 and an exhaust flow F2 from the exhaust area toward the exhaust pipe 10 ). Therefore, the phenomenon that the plurality of upper blades 412 are not contaminated by the pollutants contained in the exhaust flow F2 does not occur, and it is possible to minimize scattering of such pollutants again outwardly.

Since the guide member 413 is formed to be inclined downward and the outlet of the air flow path between the rotating plate member 411 and the guide member 413 faces downward, the air flow formed by the plurality of upper blades 412 F3 are guided to be inclined downward toward the exhaust area, and the vortex F1 thus generated has an elongated shape inclined downward, that is, toward the exhaust area. Therefore, since the air curtain by the vortex F1 can be formed longer in the vertical direction, the contaminated air far from the exhaust pipe 10 can be more easily and efficiently sucked into the exhaust pipe. That is, it is more useful when the contaminant source is far from the exhaust pipe 10 because the exhaust area can be expanded further.

In order to solve such a problem, the local exhaust system 400 is also provided with a swirler 410 for swirling by the swirler 410. In the local exhaust system 400, The restriction means 430 is provided to partially restrict the formation of the light emitting diode.

Specifically, the limiting means 430 restricts the formation of the vortex F1 in a part of the circumferential direction around the rotation center axis of the swirler 410. [ The restriction means 430 is disposed adjacent to the outlet of the air flow passage formed between the outer edge of the rotating plate member 411 and the outer edge of the guide member 413, A first blocking plate 431 for blocking the exhaust gas flow F3 and an inlet of an air flow passage formed between the outer circumferential surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 413 and fixed to the exhaust pipe 10 A second blocking plate 432 for blocking air from flowing into the air flow passage and a fixing member 433 for fixing the first blocking plate 431 to the second blocking plate 432 .

The first blocking plate 431 includes a lower blocking plate 431a disposed horizontally adjacent to a lower portion of the outlet of the airflow passage and a lower blocking plate 431b connected to the outer end of the lower blocking plate 431a, And an outer side blocking plate 431b disposed vertically adjacent to the outer side of the outlet of the main body.

The second blocking plate 432 is horizontally disposed adjacent to the inlet of the airflow passage and is fixed to the outer circumferential surface of the exhaust pipe 10 using a fastening screw 434 so as to be held at a predetermined position. The second blocking plate 432 is installed at a predetermined distance therefrom so as not to interfere with the plurality of rotating upper wings 412 and the guide member 413.

The fixing member 433 is fixed to the outer surface of the exhaust pipe 10 which does not rotate the first blocking plate 431 so that the first blocking plate 431 is held at a predetermined position, 432 by welding or other fastening means and the other end is welded to the outer end of the second shield plate 432 by welding or other fastening means .

The fixing member 433 may be formed of a plurality of rod-like members arranged at a predetermined interval, or may be a single plate.

Since the specific arrangement and operation of the restricting means 430 are the same as those of the first embodiment, a detailed description thereof will be omitted.

Fig. 9 is a perspective view showing a modification of the limiting means shown in Fig. 8. Fig.

Referring to FIG. 9, the limiting means 430 may further include a ring-shaped fixing bracket 437 fixed to the outer circumferential surface of the exhaust pipe 10. The fixing bracket 437 may be fixed to the outer circumferential surface of the exhaust pipe 10 using a fastening screw 438. A plurality of bolt holes 439 may be formed in the fixing bracket 437 along the circumferential direction.

The second blocking plate 432 may be fixed to the fixing bracket 437 using bolts 435 when the fixing bracket 437 is provided on the outer circumferential surface of the exhaust pipe 10 as described above .

The installation work can be easily performed by fixing the second blocking plate 432 to the exhaust pipe 10 by using the fixing bracket 437 as compared with the case where the second blocking plate 432 is directly fixed to the outer circumferential surface of the exhaust pipe 10, 430) can be made even more convenient.

10 is a vertical sectional view showing a vortex type local exhaust system according to a fifth embodiment of the present invention.

10, a vortex type local exhaust system 500 according to a fifth embodiment of the present invention includes a swirler 510 installed at a suction end of an exhaust pipe 10 to generate a vortex by rotation, The swirler 510 includes a driving unit 120 connected to the swirler 510 for rotating the swirler 510 and a limiting unit 530 for partially limiting the formation of swirling flow by the swirler 510.

The exhaust pipe 10 and the driving unit 120 are the same as those of the first embodiment described above and the coupling structure of the driving unit 120 and the later described rotating plate member 511 is also the same as that of the first embodiment described above, The description will be omitted to avoid repetition.

The swirler 510 includes a rotating plate member 511 rotatably mounted on a suction end of the exhaust pipe 10, a plurality of upper blades 512 provided on an upper surface of the rotating plate member 511, And a guide member 513 for covering the upper blade 512 of the guide member 513.

The detailed configuration and operation of the plurality of upper blades 512 and the guide member 513 are the same as those of the fourth embodiment shown in FIG. 8, and a detailed description thereof will be omitted.

The rotating plate member 511 is also the same as that in the fourth embodiment described above, except that it also has a plurality of second air intake holes 516. That is, a first air suction hole 518 communicating with the exhaust pipe 10 is formed in the center region of the rotating plate member 511. The first air intake hole 518 is formed around the rotation shaft coupling portion 125. The rotation shaft coupling portion 125 includes a plurality of connection portions 519 radially crossing the first air intake hole 518, And is connected to the rotating plate member 511 and supported.

The plurality of second air intake holes 516 are formed through the rotation plate member 511 and are disposed around the first air intake holes 518 to guide the upper surface of the rotation plate member 511 and the guide member 513). ≪ / RTI > Specifically, the plurality of second air intake holes 516 are formed at positions corresponding to the distance D between the outer circumferential surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 513. The plurality of second air intake holes 516 may be formed between each of the plurality of upper blades 512, and each may be formed in a circular shape, an elliptical shape, or other shapes, but is not limited thereto .

Since the plurality of second air intake holes 516 are located outside the exhaust pipe 10 so that the exhaust flow F2 is deviated from the exhaust flow F2 toward the exhaust pipe 10, (516) is minimized. Instead, a part of the vortex F1 may be introduced into the plurality of second air intake holes 516. This will be explained later.

The distance D between the outer circumferential surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 513 is set to be smaller than the distance D between the outer circumferential surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 513 in accordance with the rotation of the plurality of upper blades 512 in the local exhaust system 500 according to the fifth embodiment of the present invention The air around the exhaust pipe 10 is sucked through the plurality of second air intake holes 516 formed in the rotating plate member 511 and a part of the vortex F1, A part of the flow passes through the plurality of second air suction holes 516 and is sucked into the air flow path between the rotating plate member 511 and the guide member 513. [ Thus, the air sucked through the plurality of second air intake holes 516 merges with the air sucked through the gap D to form an air flow F3 passing through the air flow passage.

As described above, as the part of the ascending airflow inside the vortex F1 is sucked into the plurality of second air intake holes 516, the inner lower end of the vortex F1 is pulled toward the center. As a result, the entire shape of the vortex F1 is formed in an elongated shape, so that the width of the exhaust area is narrowed, but the exhaust efficiency can be further improved. Therefore, it is more useful when the pollution source is far from the exhaust pipe 10 and the pollution occurrence area is narrow.

In order to solve such a problem, the local exhaust system 500 is also provided with a vortex generator (not shown) by the swirler 510, A limiting means 530 is provided which partially restrains the formation of the < RTI ID = 0.0 >

Specifically, the limiting means 530 serves to restrict the formation of the vortex F1 in a part of the circumferential direction around the rotation center axis of the swirler 510. [ The configuration of the limiting means 530 is substantially the same as that of the limiting means 430 of the fourth embodiment shown in Fig. That is, the restriction means 530 also includes a first blocking plate 531 disposed adjacent to the outlet of the airflow passage, and a second blocking plate 531 disposed adjacent to the inlet of the airflow passage and having a fastening screw 534 And a fixing member 533 for fixing the first blocking plate 531 to the second blocking plate 532. The first blocking plate 531 is fixed to the second blocking plate 532, The lower shielding plate 531a and the outer shielding plate 531b. The construction and operation of each of these elements are the same as those of the fourth embodiment shown in FIG. 8, and a detailed description thereof will be omitted.

However, in the fifth embodiment, not only the lower flow blocking plate 531a disposed horizontally adjacent to the lower portion of the outlet of the air flow passage blocks the air flow F3 discharged through the outlet of the air flow passage, And is also configured to block the inflow of air into the air flow passages through the plurality of second air intake holes 516. This is different from the fourth embodiment. To this end, the lower blocking plate 531a extends horizontally to a lower portion of the plurality of second air intake holes 516.

Since the specific arrangement and operation of the restricting means 530 are the same as those of the first embodiment, a detailed description thereof will be omitted.

11 is a vertical cross-sectional view showing a vortex type local exhaust system according to a sixth embodiment of the present invention.

11, a vortex type local exhaust system 600 according to a sixth embodiment of the present invention includes a swirler 610 installed at a suction end of an exhaust pipe 10 to generate a vortex by rotation, A driving unit 120 connected to the swirler 610 to rotate the swirler 610 and a limiting unit 630 for partially forming the swirling flow by the swirler 610.

The exhaust pipe 10 and the driving unit 120 are the same as those of the first embodiment described above and the coupling structure of the driving unit 120 and the later described rotating plate member 611 is also the same as that of the first embodiment, The description will be omitted to avoid repetition.

The swirler 610 includes a rotating plate member 611 rotatably mounted on the suction end of the exhaust pipe 10, a plurality of upper blades 612 provided on the upper surface of the rotating plate member 611, And an upper guide member 613 and a side guide member 614 provided on the upper and inner portions of the plurality of upper blades 612 as guiding means for guiding the airflow generated by the upper blade 612 of the upper blade 612 .

The rotating plate member 611 has a circular plate shape and has a predetermined thickness and a diameter larger than the diameter of the exhaust pipe 10. The rotating plate member 611 is installed at the suction end of the exhaust pipe 10 so that the center of rotation thereof coincides with the central axis of the exhaust pipe 10. A first air intake hole 618 communicating with the exhaust pipe 10 is formed in a center region of the rotation plate member 611 and a plurality of second air intake holes 616 are formed around the first air intake hole 618 Is formed. The first air intake hole 618 is formed around the rotation shaft coupling portion 125. The rotation shaft coupling portion 125 includes a plurality of connection portions 619 radially crossing the first air intake hole 618, And is connected to and supported by the rotary plate member 611. The polluted air sucked from the exhaust area passes through the first air intake hole 618 of the rotation plate member 611 and is sucked into the exhaust pipe 10. The plurality of second air intake holes 615 are for sucking the air below the rotating plate member 611 toward the upper blade 612 provided on the upper portion of the rotating plate member 611. This will be described later .

The plurality of upper blades 612 rotate together with the rotating plate member 111 to generate an air flow, which forms a vortex F1 as described later. The detailed configuration of the plurality of upper blades 612 is the same as that of the fifth embodiment described above, so a detailed description thereof will be omitted.

The upper guide member 613 and the side guide member 614 are installed on the upper portion of the rotating plate member 611 to form an air flow path between the upper guide member 613 and the upper surface of the rotating plate member 611, 612 to guide the airflow generated by the airflow.

The upper guide member 613 is disposed at a predetermined distance from the upper surface of the rotary plate member 611 and attached to the upper end of the plurality of upper wings 612 so as to cover the plurality of upper wings 612, And rotates with the upper blade 612. That is, a plurality of upper blades 612 are fixedly installed between the rotating plate member 611 and the upper guide member 613, and they are rotated together.

The upper guide member 613 has an annular shape and may have an inner diameter larger than the outer diameter of the exhaust pipe 10 and an outer diameter larger than the outer diameter of the plurality of upper vanes 612.

The side guide member 614 is disposed between the outer circumferential surface of the exhaust pipe 10 and the inner end of the plurality of upper vanes 612 and fixed to the upper surface of the rotary plate member 611. The side guide member 614 has a cylindrical shape surrounding the exhaust pipe 10 and has a lower end fixed to the upper surface of the rotary plate member 611 and an upper end fixed to the upper guide member 613. [ That is, the side guide member 614 is vertically connected to the rotary plate member 611 and the upper guide member 613. The outer circumferential surface of the side guide member 614 may be in contact with the inner end of the plurality of upper blades 612.

Since the exhaust pipe 10 is fixed while the side guide member 614 rotates together with the rotating plate member 611 so that the rotation of the side guide member 614 is not disturbed by the exhaust pipe 10, (D) is formed between the inner peripheral surface of the exhaust pipe (614) and the outer peripheral surface of the exhaust pipe (10).

An air flow passage is formed between the upper surface of the rotary plate member 611 and the upper guide member 613 and the side guide member 614 and a plurality of upper wings 612 are disposed in the air flow passage do. An outlet of the airflow passage is formed between the outer end of the rotating plate member 6110 and the outer end of the upper guide member 613. The airflow passage is formed in the upper guide member 613 and the side guide member 614 The air around the exhaust pipe 10 is not sucked into the air flow passage even if the plurality of upper blades 612 rotate.

The suction of the air into the air suction passage is performed through the plurality of second air suction holes 616 formed in the rotating plate member 611 as described above. That is, the plurality of second air intake holes 616 serve as an inlet of the air flow passage.

As described above, the plurality of second air intake holes 616 are formed through the rotation plate member 611 and are disposed around the first air intake holes 618 to communicate with the air flow passages do. The plurality of second air intake holes 616 may be disposed between each of the plurality of upper vanes 612, and may be formed in a circular shape, an elliptical shape, or other shapes, but are not limited thereto.

In the local exhaust apparatus 600 according to the sixth embodiment of the present invention, when the exhaust operation is performed through the exhaust pipe 10, an exhaust flow F2 is formed from the exhaust region into the exhaust pipe 10. In this state, when the swirler 610 is rotated by the driving unit 120, the plurality of upper blades 612 are also rotated, so that a plurality of second air intake holes Air is sucked into the air flow passage between the rotating plate member 611 and the guide members 613 and 614 through the air flow passage 616 and the air flow thus sucked through the air flow passage is discharged downward Is generated. A donut-shaped vortex (F1) is formed outside the lower portion of the sweller 610 by the air flow thus generated. The vortex (F1) forms a region where the pollutant is generated and a region where no pollutant is generated The exhaust efficiency of the pollutant through the exhaust flow F2 inside the vortex F1 is improved.

Since the upper guide member 613 is formed to be inclined downward, the airflow formed by the plurality of upper vanes 612 is guided downwardly toward the exhaust area, and the vortex F1 thus generated is directed downward, that is, And has an elongated shape inclined toward the region. The air in the lower portion of the rotating plate member 611 is sucked through the plurality of second air suction holes 616 formed in the rotating plate member 611. The flow of the suction air is a part of the vortex F1, (F1). As described above, as the ascending air flow inside the vortex F1 is sucked into the plurality of second air intake holes 616, the inner lower end of the vortex F1 is pulled toward the center. As a result, the entire shape of the vortex F1 is formed in an elongated shape, so that the width of the exhaust area is narrowed, but the exhaust efficiency can be further improved. Therefore, it is more useful when the pollution source is far from the exhaust pipe 10 and the pollution occurrence area is narrow.

In order to solve such a problem, the local exhaust apparatus 600 is also provided with a swirler 610 for swirling by the swirler 610. In the local exhaust apparatus 600, A limiting means 630 is provided which partially restrains the formation of the < RTI ID = 0.0 >

Specifically, the limiting means 630 includes a blocking plate 631 disposed adjacent to the outlet and the inlet of the airflow passage to block the air flow, and a blocking plate 631 that fixes the blocking plate 631 to the exhaust pipe 10 And a fixing member 633.

Specifically, the blocking plate 631 is disposed between the lower portion of the outlet of the airflow passage formed between the outer end of the rotating plate member 611 and the outer end of the upper guide member 613 and the lower portion of the second air intake hole 616, And an outer side blocking plate 631b disposed vertically adjacent to an outer side of the outlet of the air flow passage while being connected to an outer end of the lower blocking plate 631a, . According to this configuration, the air flow discharged through the outlet of the air flow passage is blocked by the lower blocking plate 631a and the outer blocking plate 631b, and the plurality of second air suction holes 616 The inflow of air through the lower shield plate 631a can be blocked by the lower shield plate 631a.

The fixing member 633 fixes the blocking plate 631 to the outer circumferential surface of the exhaust pipe 10 which is not rotated so that the blocking plate 631 is held at a predetermined position, And the other end may be fixed to the outer circumferential surface of the exhaust pipe 10 by a fastening screw 634. The fastening screw 634 may be fixed to the upper end of the exhaust pipe 10 by welding or other fastening means.

The fixing member 633 may be formed of a plurality of rod-shaped members arranged at a predetermined interval as shown in FIG. 2, and may be formed of a rod- And one plate connected between the upper end portion and the outer circumferential surface of the exhaust pipe 10.

The limiting means 630 may also include the ring-shaped fixing bracket 137 shown in FIG. 4, and the fixing member 633 may be fixed to the hood 30 as shown in FIG.

Since the specific arrangement and operation of the restricting means 630 are the same as those of the first embodiment, a detailed description thereof will be omitted.

As described above, the vortex type local exhaust system according to the present invention is characterized in that it has a means for partially restricting the formation of eddy currents by a swirler, and this limitation means that, May be configured to suit the sweller. The drawings show examples in which the limiting means is installed on a swirler provided with vortex forming blades on the upper surface or the lower surface of the rotating plate member, but the present invention is not limited thereto. That is, the restricting means may also be employed in a sweller in which vortex-forming blades are provided on the upper surface and the lower surface of the rotating plate member, respectively. In this case, the limiting means employed in the swirler having the configuration in which the upper blade is provided on the upper surface of the rotary plate member and the lower blade is provided on the lower surface of the rotary plate member, As such, any suitable configuration of such restriction means may be employed as is. In addition, by combining the constructions of these restricting means, it is possible to easily derive the constitution of the restricting means suitable for the sweller having the constitution in which vortex-forming blades are respectively provided on the upper surface and the lower surface of the rotary plate member.

In the drawings of the present application, the limiting means has been described by taking as an example the case where the waller of the local exhaust system is installed adjacent to the wall and the obstacle. However, as described above, the limiting means may be employed even when a plurality of swirlers are arranged adjacent to each other. In this case, the limiting means is disposed between the adjacent swirlers so that a vortex is formed in the region between adjacent swirlers Lt; / RTI >

As described above, since the eddy current is formed only in the region where the limiting means is not provided, the airflow formed by the rotation of the swirler interferes with the adjacent wall, or the vortices generated respectively in the adjacent swirlers interfere with each other The conventional problems that may be caused by the above problems can be solved.

Further, when the pollution area is wide, for example, a large number of local exhaust ventilation devices are installed to cover a large pollution area, for example, a large-scale contamination occurrence work area of a factory, a smoking area such as an airport or a station. In this case, when a plurality of local exhaust apparatuses according to the present invention are installed at predetermined intervals along the rim of the contaminated region and the restricting means is provided in the swirler of each local exhaust apparatus so as to be located inside the contaminated region with respect to the rotation center axis , The vortex formed by the swirl of each local exhaust is formed only outside the contaminated area with respect to the swirl center axis of rotation. Therefore, by using a plurality of local exhaust apparatuses according to the present invention, it is possible to form an air curtain in the form of an air building completely surrounding the contaminated area along the rim of the wide contamination area, It is possible to effectively seal from the uncontaminated area of the contaminated area and also to improve the exhaust efficiency from the contaminated area.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined by the appended claims.

10 ... exhaust pipe 20 ... wall
30 ... hood
100, 200, 300, 400, 500, 600 ... Vortex type local exhaust
110, 210, 310, 410, 510, 610, ..., sweller 111, 211,
112, 212, 312 ... lower blade
118, 218, 318, 418, 518, 618 ... First air intake hole
119, 219, 319, 419, 519, 619 ... connection part 120 ... driving part
121 ... driving motor 122 ... motor supporting member
123 ... rotation shaft 125 ... rotation shaft coupling portion
126 ... Rotation axis inserting hole 127 ... Securing screw
130, 230, 330, 430,
131,231,331,631 ... blocking plate 133,233,333,433,533,633 ... fixed member
137,437 ... fixing bracket 313 ... outer wing
412, 512, 612 ... upper wings 413, 513 ... guide members
431, 531 ... first blocking plates 432, 532 ... second blocking plates
516, 616 ... second air intake hole 613 ... upper guide member
614 ... side guide member

Claims (18)

A circular plate-shaped rotary plate member provided at a suction end of the exhaust pipe to generate a vortex by rotation and having a first air intake hole communicating with the exhaust pipe in a central region; A sweller including a wing of
A driving unit installed on the exhaust pipe and connected to the rotating plate member of the swirler to rotate the rotating plate member and the plurality of blades; And
And restricting means installed in a part of the circumferential direction around the rotation center axis of the swirler to restrict the formation of a vortex in the partial region,
Wherein the limiting means includes a shield plate installed to be positioned in a partial region in the circumferential direction around the rotational center axis of the swirler to block the air flow generated by the plurality of blades in the certain region, And a fixing member for fixing the position of the exhaust pipe to the exhaust pipe. delete delete The method according to claim 1,
Wherein the plurality of blades include a plurality of lower blades provided on a lower surface of the rotating plate member,
Wherein the blocking plate is disposed adjacent to the plurality of lower vanes while being spaced from the plurality of lower vanes. 5. The method of claim 4,
The shield plate includes a lower shield plate horizontally disposed adjacent to a lower portion of the plurality of lower wings, and an outer shield plate disposed vertically adjacent to an outer side of the plurality of lower wings while being connected to an outer end of the lower shield plate. Plate,
Wherein one end of the fixing member is coupled to the upper end of the outer side blocking plate and the other end is fixed to the outer circumference of the exhaust pipe. The method according to claim 1,
The bottom surface of the rotating plate member is formed into a concave groove shape having a flat surface portion of the central region and an inclined surface portion of the outer edge region,
Wherein the plurality of lower vanes are installed to be in close contact with the slopes,
Wherein the blocking plate is horizontally disposed adjacent to a lower portion of the plurality of lower vanes,
Wherein one end of the fixing member is coupled to an outer end of the blocking plate and the other end is fixed to an outer circumferential surface of the exhaust pipe. The method according to claim 1,
Wherein the plurality of blades include a plurality of lower blades provided on a lower surface of the rotating plate member and a plurality of outer blades provided on an outer circumferential surface of the rotating plate member,
Wherein the blocking plate is disposed adjacent to the plurality of lower vanes and the plurality of outer vanes while maintaining an interval between the plurality of lower vanes and the plurality of outer vanes. 8. The method of claim 7,
The shield plate includes a lower shield plate horizontally disposed adjacent to a lower portion of the plurality of lower wings, and an outer shield portion vertically disposed adjacent to an outer side portion of the plurality of outer wings while being connected to an outer end portion of the lower shield plate. Plate,
Wherein one end of the fixing member is coupled to the upper end of the outer side blocking plate and the other end is fixed to the outer circumference of the exhaust pipe. The method according to claim 1,
Wherein the plurality of blades include a plurality of upper blades provided on an upper surface of the rotating plate member,
The sweller includes guide means for guiding the airflow generated by the plurality of upper blades by forming air flow passages between upper and lower portions of the plurality of upper blades and between the upper surface of the rotating plate member ≪ / RTI &
A plurality of second air intake holes communicating with the air flow passage are formed in the rotation plate member around the first air intake holes,
Wherein the guide means comprises an upper guide member attached to an upper end of the plurality of upper wings and covering the plurality of upper wings, and a lower end disposed between an outer circumferential surface of the exhaust pipe and an inner end of the plurality of upper wings, A side guide member fixed to the upper surface and having an upper end fixed to the upper guide member,
Wherein the blocking plate is disposed adjacent to the outlet of the airflow passage formed between the outer edge of the rotating plate member and the outer edge of the upper guide member and the plurality of second air intake holes Device. 10. The method of claim 9,
The blocking plate includes a lower blocking plate disposed horizontally adjacent to a lower portion of the outlet of the airflow passage formed between the outer edge of the rotating plate member and the outer edge of the upper guide member and a lower portion of the second air intake hole, And an outer side shield plate vertically disposed adjacent to an outer side of the outlet of the air flow path while being connected to an outer end of the lower shield plate,
Wherein one end of the fixing member is coupled to an upper end of the outer shield plate and the other end is fixed to an outer circumferential surface of the exhaust pipe. 11. The method according to any one of claims 1 to 10,
Wherein the fixing member is formed of a rod-shaped member, and a plurality of the fixing members are disposed between the blocking plate and the outer circumferential surface of the exhaust pipe at intervals in the circumferential direction. 11. The method according to any one of claims 1 to 10,
Wherein the fixing member comprises a plate connected between the blocking plate and an outer peripheral surface of the exhaust pipe. 11. The method according to any one of claims 1 to 10,
Wherein a ring-shaped fixing bracket is fixed to an outer circumferential surface of the exhaust pipe, and the fixing member is fixed to the exhaust pipe by being coupled to the fixing bracket. 11. The method according to any one of claims 1 to 10,
Wherein a hood in the form of a cap is fixed to the upper portion of the swirler on the exhaust pipe, and the fixing member is fixed to the hood. The method according to claim 1,
Wherein the plurality of blades include a plurality of upper blades provided on an upper surface of the rotating plate member,
Wherein the sweller is attached to an upper end of the plurality of upper wings to cover the plurality of upper wings so as to form an air flow passage between the swirl member and an upper surface of the rotation plate member, Further comprising a guide member,
Wherein the blocking plate is disposed adjacent to an outlet of the air flow passage formed between an outer edge of the rotating plate member and an outer edge of the guide member and blocks the air flow discharged through the outlet of the air flow passage, A second block disposed adjacent to an inlet of the air flow passage formed between the outer circumferential surface of the exhaust pipe and the inner circumferential surface of the guide member and fixed to the exhaust pipe to block air from flowing into the air flow passage, Plate,
Wherein the fixing member connects the first blocking plate to the second blocking plate to fix the first blocking plate to the second blocking plate. 16. The method of claim 15,
The first blocking plate includes a lower blocking plate disposed horizontally adjacent to a lower portion of the outlet of the airflow passage and a second blocking plate vertically adjacent to an outer side of the outlet of the airflow passage, And an outer side blocking plate disposed,
Wherein the second blocking plate is horizontally disposed adjacent to an inlet of the airflow passage and is fixed to an outer circumferential surface of the exhaust pipe,
Wherein one end of the fixing member is coupled to an upper end of the outer shield plate and the other end is coupled to an outer end of the second shield plate. 16. The method of claim 15,
A plurality of second air intake holes communicating with the air flow passage are formed around the first air intake holes,
Wherein the lower blocking plate of the first blocking plate extends horizontally to a lower portion of the plurality of second air intake holes. 18. The method according to any one of claims 15 to 17,
Wherein a ring-shaped fixing bracket is fixed to an outer circumferential surface of the exhaust pipe, and the second blocking plate is fixed to the exhaust pipe by being coupled to the fixing bracket.

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