KR101294324B1 - Local ventilator with swirler - Google Patents

Abstract

PURPOSE: A swirl local air exhauster is provided to increase exhaust efficiency and expand an exhausting area because there is no gap between a hood and a swirler. CONSTITUTION: A swirl local air exhauster includes a swirler (110) and a driving unit (120). The swirler is installed at the end of the inhaling unit of a vent pipe and rotates in order to generate swirl. The driving unit is installed in the vent pipe and is connected to the swirler to rotate the swirler. The swirler includes a hood member, multiple lower wings, multiple upper wings and a guide member. The hood member has a disc shape and an air inlet side of the member has a concave groove shape. The lower wing is installed at the air inlet side of the hood member. The upper wing is installed at the side opposing the surface of the vent pipe of the hood member. The guide member covers the multiple upper wings. [Reference numerals] (AA,BB) Swirl; (CC) Exhaustion area

Description

Local ventilator with swirler with swirler

The present invention relates to a local exhaust device for sucking and discharging contaminated air to the outside. More particularly, the present invention relates to a vortex type local exhaust device for expanding an exhaust area and improving exhaust efficiency by forming a vortex using a rotary swirler. It is about.

Local exhaust systems are generally used in factories, homes, restaurants, etc., where pollutants are generated a lot, especially when partial pollutants are generated on the floor away from the exhaust vents or by other installations. In this case, it can be usefully used when pollutant occurs instantaneously.

However, the conventional local exhaust apparatus used for this purpose had various problems. That is, in the conventional local exhaust device, the efficiency of inhaling and removing pollutants rapidly decreases as the source of contamination is farther from the exhaust pipe. Therefore, the local exhaust device is preferably installed as close as possible to the location of the pollutant. And there is a limitation in the installation conditions because it interferes with the movement of the workers.

In order to supplement the problems of the conventional local exhaust device, local exhaust devices have been developed to expand the exhaust area and improve the exhaust efficiency by using vortices. Korean Patent Nos. 10-0529002, 10-0821295, and 10 -0873521 and 10-0873522 disclose examples of such vortex type local exhaust devices. The vortex type local exhaust device has a configuration in which a rotary swirler is installed on the inlet side of the exhaust pipe.As the swirler rotates, a donut-shaped vortex is generated around the exhaust pipe, thereby contaminating the contaminated air in a larger area. Inhalation into the exhaust duct more efficiently.

As described above, the vortex type local exhaust device is installed on the inlet side of the exhaust pipe, and is generally used with a conventional hood to further increase the effect.

1 shows an example in which a swirler of a conventional vortex type local exhaust device is installed together with a hat shaped hood.

Referring to Figure 1, the lower suction port side of the exhaust pipe 10 is provided with a hatch shaped hood 20 and a swirler 30 to form a vortex. Hood 20 is fixed to the lower end of the exhaust pipe 10, the swirler 30 is connected to the rotation shaft 43 of the drive motor 41 is installed to be rotatable. The drive motor 41 is installed inside the exhaust pipe 10 by the support 42. The swirler 30 includes a rotating plate 31 rotated by the drive motor 41 and a plurality of wings 32 attached along the outer edge of the rotating plate 31.

In the state where the exhaust operation through the exhaust pipe 10 is being performed, when the rotating plate 31 of the swirler 30 rotates, the vanes 32 blow air from the inside of the rotating plate 31 in the radial direction outside of the rotating plate 31. To the side. In addition, the exhaust pipe 10 draws not only the contaminated air but also air around the exhaust pipe 10 and the inside of the rotary plate 31. Due to the flow of air, a donut-shaped vortex F1 is formed at the lower portion of the rotating plate 31. The vortic flow F1 formed as described above divides a region where pollutants are generated and a region where no pollutants are generated. It will act as an air curtain.

By the way, since the hood 20 is fixed to the exhaust pipe 10 and the swirler 30 is to be rotatable, a predetermined gap is formed between the hood 20 and the swirler 30. Accordingly, vortices F1 are formed on the lower both sides of the swirler 30 by the vanes 32, and the normal exhaust flow F2 from the exhaust area toward the exhaust pipe 10 is formed at the lower center of the swirler 30. Not only is formed, but also the air flow F3 toward the exhaust pipe 10 is formed through the gap between the hood 20 and the swirler 30.

This air flow F3 causes a loss of the exhaust pressure of the exhaust pipe 10, and at the edge portion A of the hood 20 collides with the vortex F1 to generate turbulent flow, thereby forming a smooth vortex F1. In addition to obstructing and lowering the exhaust efficiency, the air flow F3 has a problem of increasing noise while passing through a narrow gap between the fixed hood 20 and the rotating swirler 30.

Patent Document 1: Republic of Korea Patent Registration No. 10-0529002 (2005. 11. 09. registered) Patent Document 2: Republic of Korea Patent No. 10-0821295 (2008. 04. 03. registration) Patent Document 3: Republic of Korea Patent No. 10-0873521 (2008. 12. 04. registration) Patent Document 4: Republic of Korea Patent No. 10-0873522 (Dec. 4, 2008 registration)

The present invention has been made to solve the conventional problems as described above, and an object thereof is to provide a vortex type local exhaust device having a swirler configured to improve the exhaust efficiency and further expand the exhaust area.

According to an aspect of the present invention,

A swirler installed at an inlet end of the exhaust pipe and rotating to generate a vortex; And a driving part installed at the exhaust pipe and connected to the swirler to rotate the swirler.

The swirler,

A hood member having a disc shape, the air inlet side being formed in a concave groove shape consisting of a flat portion of the central region and an inclined surface portion of the outer edge region; A plurality of lower wings installed to be in close contact with the inclined surface portion of the air inflow side of the hood member to rotate with the hood member to form a vortex; A plurality of upper wings installed on the exhaust pipe facing surface of the hood member to form an air flow inclined downward from the horizontal or horizontal while rotating together with the hood member; And an air flow passage formed between the exhaust pipe facing surfaces of the hood member and covering the plurality of upper blades, thereby forming an air flow path between the hood pipe facing surfaces and the exhaust pipe facing surfaces of the hood member. Provided is a vortex type local exhaust device comprising a guide member for guiding.

In addition, an air suction hole communicating with the exhaust pipe may be formed in a central region of the hood member, the flat portion may be formed around the air suction hole, and the inclined surface portion may be formed along the perimeter of the flat portion.

In addition, the plurality of lower wings may be disposed radially on the air inlet side of the hood member, the plurality of upper wings may be disposed radially around the exhaust pipe.

In addition, a plurality of wing installation grooves are formed in the inclined surface portion of the hood member extending radially and penetrated to the outer surface of the hood member, and the plurality of lower wings may be inserted into the plurality of wing installation grooves, respectively. have.

In addition, the plurality of lower wings are erected from the air inlet side of the hood member and has a shape extending in the radial direction, the plurality of upper wings are erected from the exhaust pipe facing surface of the hood member and extending in the radial direction Can have

In addition, the plurality of lower wings may extend in a radial direction from the inclined surface portion to a portion of the flat portion.

In addition, the plurality of upper wings may be disposed to be spaced apart from the outer circumferential surface of the exhaust pipe, and may extend in a radial direction to protrude outside the outer edge of the hood member.

In addition, the guide member may be formed in an annular shape having an inner diameter larger than the outer diameter of the exhaust pipe, and a gap communicating with the air flow passage may be formed between the inner circumferential surface of the guide member and the outer circumferential surface of the exhaust pipe.

In addition, each of the plurality of upper wings has a shape that the height is gradually lowered away from the center of rotation, the guide member may have a shape inclined so that the distance to the hood member gradually narrowed toward the outer circumference.

According to the vortex type local exhaust device according to the embodiment of the present invention, since the hood and the swirler are integrally formed and rotate together, there is no gap between the hood and the swirler. Accordingly, the loss of exhaust pressure due to the gap between the hood and the swirler and the generation of turbulence are prevented, so that a smooth vortex is formed, thereby improving the exhaust efficiency, and the noise caused by the air flow through the gap. There is an advantage that can be prevented.

And since the air inlet side edge portion of the hood member of the swirler is formed as the inclined surface portion, the flow of air forming the vortex is guided by the inclined surface portion to have an elongated shape as compared with the prior art, and the plurality of upper wings Air flow formed in the horizontal direction upwards or in a direction slightly inclined downward from the horizontal causes the pressure in the portion to be lowered and the vortex below is pulled toward the lowered pressure. Accordingly, the vortex is formed to have an elongated and wider shape than in the related art, and the exhaust flow inside the vortex becomes wider, and the exhaust area is further expanded.

1 is a cross-sectional view showing an example of a swirler of a conventional vortex type local exhaust device installed with a hat-shaped hood.
2 is a cross-sectional view showing a vortex type local exhaust device according to an embodiment of the present invention.
3 is a perspective view illustrating a top surface of the swirler illustrated in FIG. 2.
4 is a perspective view illustrating the bottom of the swirler illustrated in FIG. 2.
FIG. 5 is a partially exploded perspective view illustrating a coupling portion between the hood member and the lower wing of the swirler illustrated in FIG. 4.

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

2 is a cross-sectional view showing a vortex type local exhaust device according to an embodiment of the present invention, Figure 3 is a perspective view showing the top surface of the swirler shown in Figure 2, Figure 4 is a view of the swirler shown in Figure 2 Figure 5 is a perspective view of the bottom, Figure 5 is a partially exploded perspective view showing a coupling portion of the hood member and the lower wing of the swirler shown in FIG.

First, referring to FIGS. 2 to 4, a swirler type local exhaust device 100 according to an exemplary embodiment of the present invention is installed on the suction end of the exhaust pipe 10 to rotate and generate a swirler 110. And a driver 120 connected to the swirler 110 to rotate the swirler 110.

The exhaust pipe 10 is a conduit for sucking contaminated air through the open suction end and discharging the contaminated air to the outside. The contaminated air may be sucked into the exhaust pipe 10 by natural negative pressure, or forcedly sucked by the operation of the exhaust fan.

The swirler 110 is rotatably installed at the suction end of the exhaust pipe 10 and includes a hood member 111 corresponding to a conventional hood, and a plurality of swirlers attached to a bottom surface of the hood member 111. A lower wing 112, a guide member 114 spaced apart from the upper portion of the hood member 111, and a plurality of upper wings 113 installed between the upper surface of the hood member 111 and the guide member 114; It is configured to include.

The hood member 111 corresponds to a conventional hood, and has a disk shape, and the lower surface thereof, that is, the air inflow side surface 118 is formed in a concave groove shape having a predetermined depth. An air suction hole 116 communicating with the exhaust pipe 10 is formed in the central region of the hood member 111. The contaminated air sucked from the exhaust area is sucked into the exhaust pipe 10 through the air suction hole 116.

The center of the air suction hole 116 is provided with a protruding boss-shaped rotary shaft coupling portion 125, the rotary shaft coupling portion 125, as will be described later, the rotary shaft 123 of the drive motor 121 Connected. To this end, the rotation shaft insertion hole 126 is vertically penetrated at the center of the rotation shaft coupling portion 125, and the fixing screw after the rotation shaft 123 of the drive motor 121 is inserted into the rotation shaft insertion hole 126. 127 is firmly coupled.

The rotation shaft coupling portion 125 is connected to and supported by the hood member 111 by a plurality of connection portions 117 crossing the air suction hole 116 in the radial direction.

As described above, the air inflow side surface 118 of the hood member 111 facing the exhaust area is formed in a concave groove shape, and may be formed of the planar portion 118a of the center region and the inclined surface portion 118b of the outer edge region. have. That is, the flat portion 118a is formed around the air intake hole 116, and the inclined surface portion 118b is formed along the circumference of the flat portion 118a. The inclined surface portion 118b is formed downward so that the diameter gradually widens toward the exhaust region.

The plurality of lower wings 112 is formed to form a vortex while rotating together with the hood member 111, and is installed on the lower surface of the hood member 111, that is, the air inlet side 118, and the hood member ( 111 is disposed radially along the circumferential direction. Each of the plurality of lower blades 112 has a shape extending from the air inlet side surface 118 of the hood member 111 and extending in the radial direction. The height of each of the plurality of lower wings 112 may be equal to the depth of the air inlet side 118 of the hood member 111.

Each of the plurality of lower wings 112 is installed to be in close contact with the inclined surface portion 118b of the air inflow side surface 118 of the hood member 111. Therefore, a gap does not occur between the inclined surface portion 118b of the air inflow side surface 118 of the hood member 111 and the lower blade 112. Each of the plurality of lower wings 112 may extend in a radial direction from the inclined surface portion 118b to a part of the flat portion 118a. That is, each of the plurality of lower wings 112 may be formed over the inclined surface portion 118b and the flat portion 118a of the air inflow side surface 118 of the hood member 111.

Next, referring to FIG. 5, a plurality of wing installation grooves 119 extending in the radial direction and penetrating to the outer surface of the hood member 111 may be formed in the inclined surface portion 118a of the hood member 111. In addition, a plurality of lower wings 112 may be inserted into the plurality of wing installation grooves 119, respectively. The plurality of lower wings 112 may be inserted into the plurality of wing installation grooves 119 and then may be integrally and firmly coupled to the hood member 111 by welding or other adhesive means.

2 to 4 together, the upper surface of the hood member 111, that is, the exhaust pipe facing surface 115 is formed in a plane, the plurality of upper wings 113 on the exhaust pipe facing surface 115 Is installed fixed. Each of the plurality of upper blades 113 has a shape extending from the exhaust pipe facing surface 115 of the hood member 111 and extending in the radial direction.

The plurality of upper wings 113 rotates together with the hood member 111 to serve to form an air flow in a substantially horizontal direction or a direction slightly inclined downward from the horizontal, along the circumference of the exhaust pipe 10. Arranged radially. In addition, the plurality of upper blades 113 rotate together with the hood member 111, whereas the exhaust pipe 10 is fixed, so that the plurality of upper blades 113 are not hindered from being rotated by the exhaust pipe 10. It is arranged to be spaced apart from the outer surface of the exhaust pipe 10 by a predetermined interval.

The guide member 114 is disposed to be spaced apart from the exhaust pipe facing surface 115 of the hood member 111 by a predetermined interval to form an air flow path between the exhaust pipe facing surface 115, the plurality of upper wings ( It serves to guide the air flow formed by 113).

Specifically, the guide member 114 is formed to cover the plurality of upper wings 113 and rotates with the plurality of upper wings 113. The guide member 114 is formed in an annular shape having an inner diameter larger than the outer diameter of the exhaust pipe 10, and thus a predetermined distance D between the outer surface of the exhaust pipe 10 and the inner circumferential surface of the guide member 114. Is formed, and the air around the exhaust pipe 10 is sucked into the air flow path between the hood member 111 and the guide member 114 through this gap D.

The outer diameters of the plurality of upper blades 113 and the guide member 114 may be larger than the outer diameters of the hood member 111. Accordingly, the plurality of upper blades 113 and the guide member 114 may be hood members 111. Can protrude outside the outer edge of the shell). In addition, each of the plurality of upper wings 113 may have a shape in which the height thereof gradually decreases away from the rotation center, and the guide member 114 also inclines downward while going toward the outer circumference, that is, the hood member 111. It may have an inclined shape so that the gap with) gradually narrows. Accordingly, the air flow path between the hood member 111 and the guide member 114 also gradually narrows away from the rotation center. Due to the shape of the air flow passage, the air flow F3 formed by the plurality of upper blades 113 and exiting the air flow passage is formed in a direction inclined downward from the horizontal, and the flow speed thereof is also increased.

On the other hand, each of the plurality of upper wings 113 may have a predetermined height, and thus the guide member 114 may also have a shape parallel to the exhaust pipe facing surface 115 of the hood member 111. In this case, the air flow F3 exiting the air flow passage is formed in a substantially horizontal 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 line of the exhaust pipe 10, a motor supporting member 122 supporting the driving motor 121 inside the exhaust pipe 10, and the driving motor 121. It includes a rotating shaft 123 drawn out from. As described above, the rotation shaft 123 is coupled to the rotation shaft coupling portion 125 provided at the center of the hood member 111 of the swirler 110.

However, the driving unit 120 having the above configuration is illustrative, and may have various configurations capable of providing power for rotating the swirler 110, and the installation position thereof 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 to rotate the swirler 110 through a power transmission means such as a belt or a gear.

Hereinafter, with reference to Figure 2, it will be described the operation of the vortex-type local exhaust device 100 according to an embodiment of the present invention having the above configuration and the flow of air accordingly.

Referring to FIG. 2, when the swirler 110 is rotated by the driving unit 120 while the exhaust operation is performed through the exhaust pipe 10, the plurality of lower wings 112 may be hood members 111. Push the inner air outward in the radial direction. In addition, the exhaust pipe 10 draws not only the contaminated air but also air around the exhaust pipe 10 into the inside of the exhaust pipe 10 and the hood member 111. Due to the flow of air, a donut-shaped vortex F1 is formed at the lower portion of the hood member 111. The vortic flow F1 formed as described above partitions a region where pollutants are generated and a region where no pollutants are generated. It acts as an air curtain. As such, a vortex F1 is formed at the lower edge portion of the swirler 110 by a plurality of lower blades 112, and a normal exhaust from the exhaust area toward the exhaust pipe 10 is formed at the lower central portion of the swirler 110. Flow F2 is formed.

In particular, according to an embodiment of the present invention, the hood member 111 corresponding to the conventional hood and Since the plurality of lower vanes 112 forming the vortex are integrally formed and rotate together, the gap between the hood and the swirler does not exist in the present invention. Therefore, the loss of exhaust pressure and turbulence caused by such a gap can be prevented, so that a smooth vortex (F1) can be formed to improve the exhaust efficiency, and can prevent noise caused by air flow through the gap. have.

Since the edge of the air inlet side surface 118 of the hood member 111 of the swirler 110 is formed of the inclined surface portion 118b, the flow of air forming the vortex F1 is caused by the inclined surface portion 118b. It is induced to have an elongated shape as compared with the prior art.

In addition, as described above, the air flow F3 is formed above the vortex F1 in the horizontal direction or in the direction slightly inclined downward from the horizontal by the plurality of upper blades 113. This air flow F3 lowers the pressure of the portion, so that the lower vortex F1 is pulled up toward the lowered pressure, that is, upward. Accordingly, as shown in FIG. 2, the vortex F1 is formed to have an elongated and wider shape than in the related art, and the exhaust flow F2 inside the vortex F1 becomes wider.

Therefore, according to the local exhaust apparatus 100 according to the present invention, not only the exhaust efficiency is improved but also the exhaust region can be further expanded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of protection of the present invention should be defined by the appended claims.

10.Exhaust pipe 100 ... Vortex type local exhaust
110 Swallower 111 Hood member
112 The lower wing 113 The upper wing
114 ... guide member 115 ... exhaust pipe facing side
116 Air intake hole 117 Connection
118 ... Air inflow side 118a ... Flat section
118b ... inclined surface 119 ... wing mounting groove
120 Drive 121 Drive motor
122 Motor support member 123 Rotary shaft
125 Rotating shaft coupling part 126 Rotating shaft insertion hole
127 fixing screws

Claims (9)

A swirler 110 installed at the suction end of the exhaust pipe 10 to generate vortex by rotating; And
Is installed in the exhaust pipe 10, the drive unit 120 is connected to the swirler 110 to rotate the swirler 110; and
The swirler 110,
Hood member 111 having a disc shape and the air inlet side 118 is formed in a concave groove shape,
It is installed on the air inlet side 118 of the hood member 111, is disposed along the outer edge of the hood member 111, a plurality of lower wings to form a vortex while rotating with the hood member 111 (112),
A plurality of upper wings 113 installed on the exhaust pipe facing surface 115 of the hood member 111 to form an air flow inclined downward from the horizontal or horizontal while rotating together with the hood member 111;
It is installed to be spaced apart from the exhaust pipe facing surface 115 of the hood member 111 and covers the plurality of upper wings 113, the air flow passage between the exhaust pipe facing surface 115 of the hood member 111 It comprises a guide member 114 for guiding the air flow formed by the plurality of upper wings 113,
The air inlet side surface 118 of the hood member 111 is composed of a planar portion 118a of the central region and an inclined surface portion 118b of the outer edge region, each of the plurality of lower blades 112 is the inclined surface portion ( 118b) in close contact with,
The guide member (114) is attached to the upper end of the plurality of upper wings 113, vortex type local exhaust device, characterized in that rotates together with the hood member (111) and the plurality of upper wings (113). The method of claim 1,
An air suction hole 116 is formed in the central region of the hood member 111 to communicate with the exhaust pipe 10, and the flat part 118a is formed around the air suction hole 116, and the inclined surface Vortex type local exhaust device, characterized in that the portion (118b) is formed along the circumference of the flat portion (118a). 3. The method according to claim 1 or 2,
The plurality of lower blades 112 are disposed radially on the air inlet side 118 of the hood member 111, the plurality of upper blades 113 are disposed radially around the exhaust pipe (10) Vortex type local exhaust device characterized in that. 3. The method according to claim 1 or 2,
The inclined surface portion 118b of the hood member 111 is formed with a plurality of wing installation grooves 119 extending radially and penetrating to the outer surface of the hood member 111, and the plurality of wing installation grooves 119. Vortex type local exhaust device, characterized in that the plurality of lower blades 112 are inserted into each of the). 3. The method according to claim 1 or 2,
The plurality of lower blades 112 is formed from the air inlet side 118 of the hood member 111 and has a shape extending in the radial direction, the plurality of upper blades 113 of the hood member 111 Vortex type local exhaust device characterized in that it has a shape extending from the exhaust pipe facing surface 115 in the radial direction. 6. The method of claim 5,
The plurality of lower vanes (112) is a vortex type local exhaust device, characterized in that extending in the radial direction from the inclined surface portion (118b) to a portion of the flat portion (118a). The method of claim 1,
The plurality of upper wings 113 is disposed so as to be spaced apart from the outer circumferential surface of the exhaust pipe (10), vortex type local exhaust device, characterized in that extending in the radial direction to protrude out the outer edge of the hood member (111). 8. The method of claim 1 or 7,
The guide member 114 is formed in an annular shape having an inner diameter larger than the outer diameter of the exhaust pipe 10, and communicates with the air flow path between the inner circumferential surface of the guide member 114 and the outer circumferential surface of the exhaust pipe 10. Vortex type local exhaust device, characterized in that the gap is formed. The method of claim 1,
Each of the plurality of upper wings 113 has a shape in which the height thereof gradually decreases away from the center of rotation, and the guide member 114 is inclined to gradually narrow the gap with the hood member 111 toward the outer circumference. Vortex type local exhaust device characterized in that it has a shape.

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