KR100873521B1 - Vortex Type Local Exhaust System - Google Patents

Abstract

The present invention relates to a vortex type local exhaust device which sucks and discharges contaminated air to the outside. In particular, the present invention includes a swirler installed at the inlet of the exhaust pipe and rotating around the exhaust pipe according to external power supply, and a driving unit rotating the swirler while installed at the exhaust pipe. The swirler includes a rotary plate installed at an inlet of the exhaust pipe and a fin positioned to protrude from the outer edge of the rotary plate while being fixed and set toward the radially outer side of the rotary plate. For this reason, this invention forms a vortex by rotation of a swirler, and uses this to expand an exhaust area. In addition, the present invention, even if the distance from the intake port of the exhaust pipe is far from the source, by improving the size of the vortex without consuming additional power unlike the prior art, it is possible to more easily suck out the polluted air.

Description

Vortex type local exhaust device {Local Ventilator for Variable Swirl}

1 is a cross-sectional view schematically showing a vortex type local exhaust device according to a first embodiment of the present invention.

FIG. 2 is a plan view of the vortex type local exhaust device shown in FIG. 1.

FIG. 3 is a cross-sectional view schematically illustrating a flow of air without omitting the driving unit in the vortex type local exhaust device illustrated in FIG. 1.

4 is a plan view illustrating that the shape of the rotating plate may be changed and replaced in the vortex type local exhaust device shown in FIG. 2.

5 and 6 are cross-sectional views of the vortex type local exhaust device showing that the up and down tilt of the rotating plate shown in FIG. 3 can be set.

7 is a schematic cross-sectional view of a vortex type local exhaust device according to a second embodiment of the present invention.

FIG. 8 is a bottom view of the vortex type local exhaust device shown in FIG. 7.

9 is a cross-sectional view schematically showing a vortex type local exhaust device according to a third embodiment of the present invention.

FIG. 10 is a plan view of the vortex type local exhaust device shown in FIG. 9.

<Description of the symbols for the main parts of the drawings>

10: exhaust pipe 20, 25: rotating plate

30: wing 40: wing guide part

50: driving unit 100: swirler

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local exhaust device for suctioning and discharging contaminated air to outside, and more particularly, has a rotary swirler to form a vortex and enlarge the exhaust area using the same. Vortex type local exhaust device.

Local exhaust systems are generally used in factories, homes and restaurants where pollutants are generated. In particular, the local exhaust device is useful when partial pollution occurs at the bottom surface away from the exhaust port, when it is difficult to install the exhaust port near the pollution source by another installation, or when the pollution source is generated momentarily.

However, the local exhaust device used for this purpose has various problems. In other words, as the local exhaust device moves away from the exhaust pipe, the efficiency of removing contaminants decreases drastically. For this reason, it is preferable that the local exhaust device be installed as close as possible to the generation of pollutants, but there are limitations on the installation conditions because it interferes with the operation of the work process and the workers.

Thus, conventionally, a local exhaust device has been developed which enlarges the exhaust area by using vortices. The vortex type local exhaust device rotates the swirler by installing a swirler on the inlet side of the exhaust pipe. The swirler then generates a vortex, like a donuts shape, around the exhaust pipe, allowing more efficient intake of contaminated air into the exhaust pipe. However, the vortex type local exhaust device needs to have a relatively large vortex in proportion to the distance from the intake port of the exhaust pipe to the source (hereinafter, referred to as 'exhaust depth'), so that contaminated air can be easily sucked into the exhaust pipe. The size of these vortices is proportional to the rotational force of the swirler. In other words, the vortex type local exhaust device rotates the swirler more quickly when the exhaust depth is long, but there is a problem in that power consumption increases rapidly.

The present invention has been proposed in order to solve the problems of the prior art as described above, even if the distance from the inlet of the exhaust pipe to the source of contamination is improved to improve the size of the vortex without consuming additional power compared to the prior art It is an object of the present invention to provide a variable vortex type local exhaust device.

Vortex type local exhaust device of the present invention is installed in the inlet of the exhaust pipe swirler (swirler) that rotates around the exhaust pipe in accordance with the external power supply, and installed in the exhaust pipe is connected to the swirler to the swirler It includes a drive to rotate. In addition, the swirler is a plurality of rotating plate is installed along the radially outer edge of the rotary plate, and installed in the suction port of the exhaust pipe, and is fixed to stand radially outward of the rotary plate and protrudes from the outer edge of the rotary plate And a fin that is positioned as such.

The swirler further includes a wing guide portion to which the wing is coupled while being fixed to the rotating plate.

The wing guide portion is a pair of members having a separation space, the blade is fitted into the separation space is fixed.

The wing guide portion is formed with an elongated guide groove toward the radially outward direction of the rotating plate, the fastening member is inserted through the guide groove, the fastening member fastens the wing guide portion and the wing integrally.

The rotating plate is an annular disk, formed with a through hole corresponding to the inner diameter of the exhaust pipe, and having the same rotation axis as the shaft center of the exhaust pipe. Alternatively, the rotating plate is a plate material in which recesses are recessed between adjacent wings, and a through hole corresponding to the inner diameter of the exhaust pipe is formed, and the rotating plate has the same axis of rotation as the axis center of the exhaust pipe.

The swirler further includes a cover member coupled to protrude radially from the outer edge of the rotating plate to cover the wing. The cover member has a ring shape having a concentric circle with respect to the rotating plate.

The cover member is composed of one or more, and is sequentially stacked so that a portion overlaps toward the radially outer side of the rotating plate. Or the cover member is composed of one or more, the ring shape is matched toward the radially outward direction of the rotating plate is connected in sequence expansion.

The rotating plate is installed at the inlet of the exhaust pipe while forming an inclination angle with the central axis of rotation thereof.

The driving unit includes a motor installed on a center line of the exhaust pipe, a motor shaft drawn from the motor, and a connecting member interconnecting the motor shaft and the rotating plate.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

FIG. 1 is a cross-sectional view schematically showing a vortex type local exhaust device according to a first embodiment of the present invention, and FIG. 2 is a plan view of the vortex type local exhaust device shown in FIG.

As shown in Fig. 1 and Fig. 2, the vortex type local exhaust device of the first embodiment sucks air contaminated by pollutants released into the atmosphere and discharges it to the outside. In particular, the first embodiment can easily inhale and discharge contaminated air relatively far from the intake port as compared with the prior art. To this end, the first embodiment has the following components.

The exhaust pipe 10 is a pipe for releasing contaminated air to the outside, and any type of pipe such as a generally known flexible pipe or metal pipe may be used. In this case, the present embodiment may inhale air contaminated into the exhaust pipe 10 by natural negative pressure, or force suction by operation of the driving motor fan.

The swirler 100 is installed at the inlet of the exhaust pipe 10 and rotates around the exhaust pipe 10 by the power supplied from the driving unit 50. The swirler 100 includes a rotating plate 20 installed at the inlet of the exhaust pipe 10 and a plurality of wings 30 attached along the outer edge of the rotating plate 20.

Rotating plate 20 is rotated via a bearing or a separate drive device installed on the inlet end of the exhaust pipe (10). The rotating plate 20 is an annular disk, and a through hole corresponding to the inner diameter of the exhaust pipe 10 is formed, and has the same rotation axis as the axis center of the exhaust pipe 10.

The wings 30 are arranged in plural along the radially outer edge of the rotating plate 20. That is, the plurality of wings 30 are arranged at equal intervals in a radial shape. Such a wing 30 may be a straight or curved streamline having a straight direction as long as it stands up and fixed toward the radially outer side of the rotating plate 20. And, if the exhaust pipe 10 is located on one side of the rotating plate 20, the wing 30 is located on the other side of the rotating plate (20). In particular, the wing 30 of this embodiment is located to protrude further from the outer edge of the rotating plate 20, there is a feature that the protruding region (A) as shown in the figure.

The driving unit 50 is connected to the swirler 100 to provide power for rotating the swirler 100. The driving unit 50 includes a motor 51 positioned on the center line of the exhaust pipe 10, a motor support member 52 supporting the motor 51 inside the exhaust pipe 10, and a motor shaft drawn out from the motor 51. 53, and a connecting member 54 for connecting the motor shaft 53 and the rotating plate 20 to each other. Due to this configuration, the driving unit 50 may rotate the rotating plate 20 according to the operation of the motor 51.

However, the present embodiment only shows and described the driving unit 50 by way of example, any structure is possible as long as it can provide power to rotate the swirler 100, and the installation position is not limited. That is, the driving unit 50 is installed on the inner surface or the outer surface of the exhaust pipe 10 by means such as a bracket, it can be interlocked with the swirler 100 by a belt connection or gear coupling method. 3 to 10, the illustration of the driving unit 50 will be omitted, and the present invention will be described with reference to the drawings schematically showing the vortex type local exhaust device.

FIG. 3 is a cross-sectional view schematically illustrating a flow of air without omitting the driving unit in the vortex type local exhaust device illustrated in FIG. 1.

As shown in FIG. 3, when the rotating plate 20 rotates, the vanes 30 push air inside the rotating plate 20 radially outward of the rotating plate 20. When the contaminated air is sucked into the exhaust pipe 10, the contaminated air to be sucked into the exhaust pipe 10 and the inside of the rotating plate 20 are attempted to enter the exhaust pipe 10. By the flow of air, vortices are formed in the lower part of the rotating plate 20, respectively.

In particular, in the present embodiment, the wing 30 protrudes from the outer edge of the rotating plate 20, thereby introducing air located above the rotating plate 20 to the bottom. Then, the air flowing outward in the radial direction of the rotating plate 20 is combined with the air flowing from the top of the rotating plate 20, it can flow to a farther distance in the lower direction of the rotating plate 20 than in the prior art. That is, the size of the vortex is larger than in the prior art, so that contaminated air farther from the exhaust pipe 10 is sucked into the exhaust pipe 10 more easily than in the prior art.

At this time, the rotating plate 20 has been described as an annular disk, but as shown in Figure 4, the rotating plate 25 may be made of a plate material having a toothed gear shape. That is, the rotating plate 25 may be formed by recessing the recesses 26 between the adjacent wings 30 as shown in FIG. 4, or may be modified into other shapes.

5 and 6 are cross-sectional views of the vortex type local exhaust device showing that the vertical tilt of the swirler shown in FIG. 1 can be set.

As shown in FIGS. 5 and 6, the swirler 100 forms an inclination angle θ with the rotation axis thereof, and an up and down inclination may be set. That is, if the inclination angle θ of the rotating shaft and the rotating plate 20 is set between 45 ° and 90 ° as shown in FIG. 5, the vortex may be formed long in the downward direction of the rotating plate 20, but the likelihood of the vortex being broken also increases. . And, as shown in Figure 6, if the inclination angle (θ) of the rotating shaft and the rotating plate 20 is set between 90 ° ~ 120 °, the size of the vortex can be reduced, but can form a vortex stably. Therefore, it is preferable that the inclination angle θ of the rotating shaft and the rotating plate 20 be set in accordance with the location of the vortex type local exhaust device.

The swirler 100 also varies in size due to its rotational speed. That is, when the speed of rotation of the swirler 100 increases, the vortex becomes longer in the lower direction of the rotating plate 20 in proportion thereto. On the other hand, if the rotation speed of the swirler 100 is slow, the vortex is also shortened in the lower direction of the rotating plate 20 in proportion thereto.

In addition, the vortex type local exhaust device of the present embodiment may further include protection means on the outer side of the rotating plate 20 to occupy an area larger than the rotation radius of the wing 30. That is, the protection means is not only to protect the facility, but also to prevent safety accidents due to the high speed rotating swirler 100.

7 is a cross-sectional view schematically showing a vortex type local exhaust device according to a second embodiment of the present invention, and FIG. 8 is a bottom view of the vortex type local exhaust device shown in FIG.

As shown in Figs. 7 and 8, the vortex type local exhaust device of the second embodiment further includes a wing guide portion 40 as compared with the first embodiment. The wing guide portion 40 is fixed to the rotating plate 20, the wing 30 is fastened and fixed. The wing guide portion 40 is a pair of members having a spaced apart space, the wing 30 is fitted into this spaced space is fixed. In addition, the wing guide portion 40 is formed with a guide groove 41 elongated toward the radially outer side of the rotating plate 20, and the fastening member 42 is inserted through the guide groove 41. The fastening member 42 fastens the wing 30 and the wing guide part 40 integrally. Due to this configuration, the wing 30 may protrude further from the outer edge of the rotating plate 20 or may be moved into the inside of the rotating plate 20. That is, the wings 30 may have a variable length of the protruding region A protruding from the outer edge of the rotating plate 20 as shown in FIGS. 7 and 8.

9 is a cross-sectional view schematically showing a vortex type local exhaust device according to a third embodiment of the present invention, and FIG. 10 is a plan view of the vortex type local exhaust device shown in FIG.

As shown in Figs. 9 and 10, the vortex type local exhaust device of the third embodiment covers the cover 30 which projects radially from the outer edge of the rotating plate 20 in comparison with the first embodiment. It further comprises a member 50. Cover member 50 is coupled to the outer edge of the rotating plate 20, the cover member 50 is coupled to one side of the rotating plate 20 if the wing 30 is fixed to the other side of the rotating plate (20).

The cover member 50 is made wider in the radially outward direction of the rotating plate 20 corresponding to the shape of the rotating plate 20. That is, if the rotating plate 20 is a disk shape, the cover member 50 is produced in a ring shape having concentric circles corresponding to the rotating plate 20. The cover member 50 is composed of one or more dogs, each cover member 50 is made more wide in sequence. Then, the plurality of cover members 50 are sequentially stacked so as to overlap a portion toward the radially outer side of the rotating plate 20. Alternatively, each of the cover members 50 may be manufactured such that ring shapes are matched with each other, and are sequentially connected to each other while the ring shapes are matched toward the radially outward direction of the rotating plate 20 (not illustrated). By such a configuration, the cover member 50 may vary the length of the protruding region A of the wing 30 exposed to the outside of the rotating plate 20.

That is, the preferred embodiments of the present invention have been described, but the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims, the detailed description of the invention, and the accompanying drawings. Naturally, it belongs to the range of.

As described in detail above, the vortex type local exhaust device of the present invention improves the size of the vortex without consuming additional power, unlike the prior art, even if the distance from the intake port of the exhaust pipe is far from the contaminated air. There is an advantage that can be sucked out more easily.

In addition, since the present invention can vary the protruding region of the wing, it is possible to reduce the power consumption by adjusting the size of the vortex as needed, as well as to make it easier to suction and discharge contaminated air.

Claims (12)

delete delete A swirler installed at an inlet of the exhaust pipe and rotating around the exhaust pipe according to external power supply; And And a driving unit installed at the exhaust pipe and connected to the swirler to rotate the swirler. The swirler Rotating plate is installed in the suction port of the exhaust pipe; And A plurality of dogs are disposed along the radially outer edge of the rotating plate, and are arranged to face radially outward of the rotating plate, protruding from the outer edge of the rotating plate, and installed on the contaminated air inflow side of the rotating plate. Including a fin; The swirler further includes a wing guide portion to which the wing is fastened while being fixed to the rotating plate, The wing guide portion is a pair of members having a separation space, the vortex-type local exhaust device is fixed to the wing in the separation space. The method of claim 3, wherein The wing guide portion is formed with an elongated guide groove toward the radially outer side of the rotating plate, the fastening member is inserted through the guide groove, The fastening member is a vortex type local exhaust device for fastening the wing guide portion and the wing integrally. delete A swirler installed at an inlet of the exhaust pipe and rotating around the exhaust pipe according to external power supply; And And a driving unit installed at the exhaust pipe and connected to the swirler to rotate the swirler. The swirler Rotating plate is installed in the suction port of the exhaust pipe; And A plurality of dogs are disposed along the radially outer edge of the rotating plate, and are arranged to face radially outward of the rotating plate, protruding from the outer edge of the rotating plate, and installed on the contaminated air inflow side of the rotating plate. Including a fin; The rotating plate is a vortex-type local exhaust device having a through hole corresponding to the inner diameter of the exhaust pipe as a plate material in which recesses are recessed between adjacent wings, and having the same rotation axis as the axis center of the exhaust pipe. The method according to any one of claims 3, 4, 6, The swirler further comprises a cover member coupled to protrude radially further from the outer edge of the rotating plate to cover the wing. The method of claim 7, wherein And the lid member is a ring-shaped local exhaust device having a concentric circle with respect to the rotating plate. The method of claim 8, The cover member is composed of one or more, vortex-type local exhaust device is sequentially stacked so that a part overlaps in the radially outward direction of the rotating plate. The method of claim 8, The cover member is composed of one or more, vortex-type local exhaust device that is sequentially expanded connected to match the ring shape toward the radially outward direction of the rotating plate. delete delete

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