KR100821330B1 - Hood device for collecting a pollutant - Google Patents

Abstract

An apparatus of sucking contaminants is provided to strongly suck the contaminant by installing an intake apparatus such that the intake apparatus is opened at a direct upper part of a space including contaminated air. An apparatus of sucking contaminants comprises a pipe member(10), which has a hollow shape to form an intake part(11), a fan(20) for sucking air including contaminants into the intake part, a negative-pressure generation member(30) and a pair of blocking members. The negative-pressure generation member has a flat plate part(32) to form negative pressure at a front side of the flat plate part during sucking the contaminants. The flat plate part is coupled to the pipe member such that the flat plate part is disposed around the intake part. A normal direction of the flat plate part is directed toward a front side of the intake part.

Description

Hood device for collecting a pollutant

The present invention relates to a contaminant suction device, and more particularly, to a contaminant suction device for sucking and discharging contaminants such as dust, harmful gas and mist.

Devices for sucking contaminants such as gas, steam, mist and dust are widely used in various fields. For example, in the work space where work such as painting, soldering, smelting, etc. is performed, a discharge system is installed for sucking various pollutants generated during the work and discharging them out of the work space. In addition, ventilation and exhaust systems are provided in the tunnels and buildings for ventilating and evacuating the interior of the tunnel or the interior of the building. In the kitchen and smoking rooms, hoods are used to remove food smells and tobacco smoke.

On the other hand, as an example of the suction device for sucking contaminants, Figure 1 shows a canopy hood device (100 ') used in industrial sites. Referring to FIG. 1, the canopy hood device 100 ′ includes a duct member 50 having a hollow pipe part 51 and a canopy part 52 extending forward from the end of the pipe part, and the pipe part. It includes a fan 20 installed inside. The inner diameter of the canopy portion 52 is larger than the diameter of the pipe portion 51, in particular gradually increasing toward the front of the pipe portion 51. The canopy part 52 is responsible for guiding the flow of air so that air containing contaminants flows into the pipe part 51. The canopy hood device 100 'is installed above the work place where soldering is performed, for example, and various contaminants generated during soldering are sucked upward by the canopy hood device 100' and discharged to the outside. The arrow shown in FIG. 1 indicates the suction direction of the pollutant.

In FIG. 2, the diameter of the canopy hood device 100 ′ shown in FIG. 1, in particular, the pipe part 51 is 300 mm, and the horizontal and vertical lengths of the canopy part 52 are 1200 mm and 950 mm, respectively. The speed ratio of the second flow rate to the first flow rate is shown in the case of using the canopy hood device 100 'configured to have a length of 450 mm downward. Here, the first flow rate refers to the flow rate of air flowing from the tip of the pipe part 51 to the inside of the pipe part, and the second flow rate is the canopy part 52 at a specific position in front of the tip of the canopy part 52. It refers to the flow velocity of air flowing into. In addition, the speed ratio indicates the suction capacity of the canopy hood device 100 ', that is, the degree of inhalation of contaminants existing in front of the canopy portion 52, and in front of the canopy portion 52 by this speed ratio. The negative pressure region to be formed and the degree of negative pressure formation can be evaluated.

As shown in FIG. 2, in the conventional canopy hood device 100 ′, air is flowed at a flow rate of 7% or less of the flow rate at the tip of the pipe portion 51 in front of the canopy portion 52. Since it is sucked, the sound pressure is weakly formed in front of the canopy portion 52. As such, when the negative pressure is weakly formed in front of the canopy part 52, the contaminants are not effectively sucked into the canopy part 52. In particular, when air flows in a direction intersecting with the suction direction of the pollutant, the pollutant may not be further sucked into the hood device 100 ′, resulting in severe contamination of the work space.

In order to solve the problems described above, a fan having a high power may be installed, but a high power fan consumes excessive energy to cause noise, and there is a big limitation in improving the suction capacity even with a high power fan. .

In addition, a method of forming the duct member 50 without the canopy portion 52 may be considered, but in this method, since a negative pressure is formed only in an area corresponding to the diameter of the duct member in front of the duct member 50, In order to apply to the workplace of the area, the diameter of the duct member 50 must be increased or the number of the duct members 50 must be increased. In this way, if the diameter or number of duct members is increased, a problem arises in that the manufacturing cost and the maintenance cost of the hood device 100 'are increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a contaminant inhalation device that can not only improve the intake performance of contaminants but also reduce noise and energy consumption.

In order to achieve the above object, the pollutant suction device according to the present invention comprises a pipe member made of a hollow shape so that the suction port is formed in which the external pollutant is sucked into; A fan that sucks air containing the pollutant into the inlet of the pipe member to suck the pollutant; And a flat plate portion formed flat, wherein the flat plate portion is disposed around the inlet of the pipe member and coupled to the pipe member such that the normal direction of the flat portion faces the front of the suction port. And a negative pressure forming member for forming a negative pressure.

According to the present invention having the above-described configuration, contaminants such as dust, harmful gas, mist, and the like suspended in the air are efficiently sucked. In addition, noise and energy consumption during inhalation of pollutants are also reduced.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic cross-sectional view of a pollutant suction device according to an embodiment of the present invention, Figure 4 is a schematic graph for explaining the suction force in the negative pressure region formed in front of the suction device shown in FIG. FIG. 5 is a cross-sectional view schematically illustrating an installation state of the suction device shown in FIG. 3 and the hood device shown in FIG. 1.

3 to 5, the pollutant suction device 100 according to the present embodiment includes a pipe member 10, a fan 20, and a negative pressure forming member 30.

The pipe member 10 has a hollow shape. The inner surface of the pipe member 10 has a curved shape, for example a circular curved shape. The inlet 11 and the outlet 12 are formed in the pipe member 10. The inlet 11 is a portion where external pollutants are sucked, and the outlet 12 is a portion where the sucked pollutants are discharged to the outside of the pipe member 10. The outlet 12 is connected to the duct member 13 provided in the exhaust system, so that the sucked contaminants are discharged to the exhaust system through the duct member 13.

The fan 20 sucks external air existing in front of the pipe member 10 so that the contaminants contained in the air are sucked through the inlet 11 of the pipe member. In this embodiment, the fan 20 is arranged inside the pipe member 10, in particular between the inlet 11 and the outlet 12 of the pipe member.

The negative pressure forming member 30 has a plate shape. The negative pressure forming member 30 has a through hole 31 formed therethrough so that the pipe member 10 is fitted thereto. The negative pressure forming member 30 is provided with a flat plate portion 32 formed flat. The flat plate part 32 is disposed around the suction port 11 of the pipe member when the negative pressure forming member 30 is coupled. In addition, in the flat plate part 32, the normal direction V of the flat plate part 32 faces the front of the inlet 12. In particular, in the present embodiment, the normal direction V of the flat plate part is the radial direction R of the pipe member. Orthogonal to And the flat part 32 is arrange | positioned on the same plane P as the front end surface 14 of a pipe member, as shown in FIG. As such, when the negative pressure forming member 30 is coupled, the negative pressure is also formed in front of the flat part 32 of the negative pressure forming member when the pollutant is sucked by the fan 20. And, the arrow shown in Figure 4 indicates the suction direction of the pollutant.

In the suction device 100 of the present embodiment, in particular, the pipe member 10 is 300mm in diameter, the horizontal and vertical length of the flat plate 32 is configured to be 1200mm and 950mm, respectively, through the experiment, Checking the sound pressure formed in front of the sound pressure forming member 30 can obtain a graph for the sound pressure intensity as shown in FIG. As shown in Figure 4 it can be seen that the negative pressure is strongly formed around the inlet 11 of the pipe member. And, it can be seen that the sound pressure is stronger and more headed forward from the tip of the suction device than the conventional sound pressure shown in FIG. In addition, it can be seen that the negative pressure is formed not only in front of the suction port 11 of the pipe member but also in front of the negative pressure forming member 30.

As described above, the suction device 100 of the present embodiment is installed above the space where the pollutant is generated, as shown in FIG. 5, so as to suck the pollutant. In particular, the suction device 100 of the present embodiment is configured to directly suck the contaminants from the front end portion 14 of the suction device, that is, the suction port 11 of the pipe member, the canopy of the conventional canopy hood device shown in FIG. Contaminants are sucked more strongly than when they are configured to suck upwards from the body. In addition, even when an external force is generated in a direction crossing the direction in which the pollutant is sucked, that is, a direction crossing the vertical direction, the pollutant is sucked into the suction port without being affected by the external force as compared to the conventional canopy hood device. In addition, the suction device 100 of the present embodiment, as described with reference to Figure 4, compared to the conventional canopy hood device, the negative pressure is strongly formed in front of the suction port 11 and the negative pressure forming member 30, suction performance This is a dramatic improvement. As described above, in this embodiment, the contaminant can be easily configured to improve the suction performance and further reduce the noise and energy consumption.

On the other hand, in the present embodiment, unlike the suction device for contaminants, a pair of blocking members may be installed inside the pipe member as shown in FIG. 6.

Referring to FIG. 6, the suction device 100a for pollutants of the present embodiment further includes a pair of blocking members 40.

The pair of blocking members 40 are spaced apart at regular intervals in the direction from the inlet 11 to the outlet 12 of the pipe member, that is, in the longitudinal direction of the pipe member, facing each other. The outer circumferential surface of each blocking member 40 contacts the inner circumferential surface of the pipe member 10. In particular, in this embodiment, one blocking member 40 is arranged at the inlet 12 of the pipe member. Each blocking member 40 has a through hole 41 formed in the longitudinal direction of the pipe member. The through holes 41 are arranged coaxially with each other. In addition, each through hole 41 is disposed coaxially with the suction port 11 and the discharge port 12 of the pipe member.

Since the pair of blocking members 40 reduces the flow end area of the air sucked into the pipe member 10, the air pressure in the through-hole 41 of each blocking member is blocked when the outside air is sucked in. It is reduced compared to the air pressure between the members 40. In addition, whirlpool flow is generated in the air sucked into the suction port 11, as shown in a spiral in FIG. 6, and in particular, the whirlwind flow is generated inside and outside the pipe member 10. Thus, contaminants are sucked into the inlet with air by whirlwind flow.

As described above, in the present embodiment, since the pollutant is sucked into the inlet 11 of the pipe member by the tornado flow, the suction performance of the pollutant is further improved.

Meanwhile, in the suction device 100 shown in FIGS. 3 to 5 and the suction device 100a shown in FIG. 6, the negative pressure forming member 30 is configured to have a plate shape. In addition, since the edge of the negative pressure forming member 30 manufactured in a plate shape is sharply formed, a phenomenon in which an operator is injured frequently occurs during the transportation, installation, and use of the suction devices 100 and 100a. Therefore, as shown in FIG. 7, it is preferable to configure the suction device 100b such that the negative pressure forming member 30b further has the protection part 33. The protection part 33 extends from the edge of the flat plate part 32 toward the front of the suction port 11 and is formed to surround the entire edge of the flat plate part 32.

As such, when the protection part 33 is further formed on the negative pressure forming member 30b, the worker can be effectively prevented from being damaged by the sharp edge of the negative pressure forming member. Of course, if the length L of the protection part 33, i.e., the length downward, is too large, the suction force of the suction device is reduced as described in the prior art. Therefore, it is preferable to set the length L of the protection part to the minimum length necessary for preventing the injury of the operator. For example, the length L of the protection part is set to about 10 percent of the diameter of the suction port 11 of the pipe member. In this way, if the length (L) of the protection portion is set, it is possible to prevent the occurrence of injury to the operator while at the same time significantly increasing the suction force compared to the conventional.

On the other hand, in order to check the degree of suction performance of the suction device 100b of the present embodiment, the diameter of the pipe member 10 is 300mm, the horizontal and vertical length of the flat plate 32 is 1200mm and 950mm, respectively, When the experiment is performed by configuring the suction device 100b such that the length L of 40 is 40 mm, a result almost similar to the result shown in FIG. 4 can be obtained. Therefore, in the suction device 100b of the present embodiment, the length of the protection part 33 is much smaller than the diameter of the pipe member 10 and the area of the flat plate part 32 so that the protection part 33 is formed. It can be seen that the part 33 does not significantly affect the suction performance of the suction device 100b.

In addition, as a result of confirming through experiments, the length of the protective part 33 is preferably set to be 5% to 20% of the diameter of the pipe member 10. When the length L of the protection part 33 is within 5% of the diameter of the pipe member 10, the length L of the protection part 22 is too small to form the protection part 33 as well. It is not preferable because the worker 22 may be damaged by the protection part 22. In addition, when the length L of the protection part 33 exceeds 20% of the diameter of the pipe member 10, the suction performance of the suction device 100b is lowered, which is similar to the conventional canopy hood device 100 '. It is not desirable because it loses.

Meanwhile, in the suction device 100 shown in FIGS. 3 to 5 and the suction device 100a shown in FIG. 6, the pipe member is provided to have one pipe member. Device 100c may also be configured.

8 and 9, in the pollutant suction device 100c, a plurality of pipe members 10, for example, three pipe members 10 are fitted to the negative pressure forming member 30, respectively. Combined. In addition, a fan 20 is installed inside each pipe member 10, so that air containing contaminants may be sucked into the inlet 11 of each pipe member.

When the plurality of pipe members 10 are fitted to the negative pressure forming member 30 as described above, the negative pressure forming member 30 is formed for each pipe member 10 and a negative pressure is formed in a wide area without combining and contaminants. Can be inhaled efficiently. In particular, since the structure of the suction device can be variously changed by the environment of the workplace, the structure shown in FIGS. 8 and 9 or the structure shown in FIGS. The mixing structure can be selected and installed appropriately.

As mentioned above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. It is obvious.

For example, in the present embodiment, the negative pressure forming member is configured to have a plate shape, but the negative pressure forming member does not necessarily have to have a plate shape, but only the negative pressure forming member needs to be configured to form a flat plate.

In addition, in the present embodiment, the flat plate portion is configured to be disposed on the same plane as the tip surface of the pipe member, but the flat plate portion is not arranged on the same plane as the tip surface of the pipe member, but configured to be disposed behind the tip surface of the pipe member. You may.

In addition, although the pipe member and the negative pressure forming member are separated in the present embodiment, the pipe member and the negative pressure forming member may be configured as one body.

In addition, in the embodiment shown in FIG. 6, a pair of blocking members is arranged inside the pipe member, but it is not necessary to configure the pair of blocking members.

In addition, in the embodiment shown in FIG. 6, the blocking members are configured separately from the housing, but the blocking members and the housing may be configured to be one body.

1 is a schematic cross-sectional view of a canopy hood device according to a conventional example.

FIG. 2 is a schematic graph illustrating a suction force in a negative pressure region formed in front of the hood device shown in FIG. 1.

3 is a schematic cross-sectional view of a pollutant suction device according to an embodiment of the present invention.

FIG. 4 is a schematic graph illustrating a suction force in a negative pressure region formed in front of the suction device illustrated in FIG. 3.

FIG. 5 is a cross-sectional view schematically illustrating an installation state of the suction device shown in FIG. 3 and the hood device shown in FIG. 1.

6 is a schematic cross-sectional view of a pollutant suction device according to another embodiment of the present invention.

7 is a schematic cross-sectional view of a contaminant suction device according to another embodiment of the present invention.

8 is a schematic cross-sectional view of a pollutant suction device according to another embodiment of the present invention.

FIG. 9 is a view taken along line VII-VII of FIG. 8.

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

10 ... pipe member 11 ... inlet

12 ... outlet 13 ... duct member

14 ... Front section 20 ... Fan

30, 30 b ... Negative pressure forming member 31 ... Through hole

32 ... plate 33 ... protector

40 ... Blocking member 41 ... Through hole

100,100a, 100b, 100c ... Pollutant suction device

Claims (10)

A pipe member made of a hollow shape to form a suction port through which external pollutants are sucked into the inside; A fan that sucks air containing the pollutant into the inlet of the pipe member to suck the pollutant; It has a flat plate portion formed flat, the plate portion is disposed around the inlet of the pipe member and coupled to the pipe member so that the normal direction of the plate portion toward the front of the suction port, in the intake of the contaminant toward the front of the plate portion A negative pressure forming member for forming a negative pressure; And And a pair of blocking members disposed in the pipe member so as to face each other in the longitudinal direction of the pipe member and having through-holes formed in the longitudinal direction. The method of claim 1, The negative pressure forming member is a contaminant suction device, characterized in that the plate shape. delete delete delete delete delete delete The method of claim 1, The outer surface of each blocking member is disposed to contact the inner surface of the pipe member, The through-holes of the blocking members are disposed coaxially, characterized in that the suction device. The method of claim 1, The blocking member is a pollutant suction device, characterized in that formed integrally with the pipe member.

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