KR20170044227A

KR20170044227A - A Filtering Apparatus for an Intake Air of a System of Air Management

Info

Publication number: KR20170044227A
Application number: KR1020150143235A
Authority: KR
Inventors: 김윤훈; 권일윤; 권성덕; 김성은; 조승준; 김명수; 성동수
Original assignee: 주식회사 크린텍코리아
Priority date: 2015-10-14
Filing date: 2015-10-14
Publication date: 2017-04-25

Abstract

The present invention relates to a filtering apparatus for intake air of an air treatment system, and more specifically, to a filtering apparatus for intake air of a combustion engine that removes moisture or foreign substances contained in air sucked into the combustion engine such as a gas turbine of a power plant. The filtering apparatus for intake air of an air treatment system comprises: a foreign substance removing unit (111) for removing foreign substances from air introduced from the outside; a primary filter unit (112) for removing fine particles having a diameter of a predetermined size or moisture from the air that has passed through the foreign substance removing unit (111); and a secondary filter unit (15) for removing fine particles or moisture from the air transferred to the primary filter unit (112). The air is introduced into the foreign substance removing unit (111) in a different direction from a direction where gravity is applied with respect to foreign substances, and the air introduced into the secondary filter unit (15) flows in a different direction from the air introduced into the foreign substance removing unit (111).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a filtering apparatus for an air-

The present invention relates to a filtration apparatus for the intake air of an air treatment system, and more particularly, to a cleaning apparatus such as a gas turbine of a power plant or a clean room in which external air is sucked, a subway, a sewage treatment plant, The present invention relates to an apparatus and method for filtering air in an intake air.

Air needs to be inhaled to burn fuel in various combustion engines, including gas turbines in power plants. In addition, air may be introduced from the outside to cool the device or the engine that generates heat during operation. Such incoming air should contain a certain level of humidity or foreign matter to prevent combustion damage or to prevent damage to the equipment and to pre-treat air pollution. A filter may be used for this purpose.

Prior art relating to an apparatus for introducing air into a combustion engine is disclosed in Patent Publication No. 10-2015-0047882. The prior art includes a housing defining an air inlet, a dust outlet facing the air inlet along one direction, and a suction air passage connecting the air inlet and the dust outlet. A plurality of blades installed on a side surface of the air intake passage for filtering dust and providing purified air to a purified air duct; And a duct connected to the dust outlet, and an eductor disposed in parallel to an end of the dust inlet and having an exhaust gas nozzle for spraying high-pressure air at a high speed to induce discharge of dust air. .

The Utility Model Registration No. 20-0433980 discloses an air filter structure installed on the intake side of a gas turbine air-cooled generator equipped with a filter installed on a suction side induction pipe to filter out foreign matter, dust and moisture from the intake external combustion air, And a separate auxiliary filter is provided on the outer periphery of the induction pipe to separate the filter structure having a two-stage filter structure.

The air that is mixed with fuel or externally introduced for cooling may contain various types of fine particles or moisture depending on the external environment, and such pollutants need to be removed stepwise. The prior art does not disclose a method by which the removal of various types of moisture or fine particles contained in the outside air can be phased out.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-2015-0047882 (Samjung Turbine Co., Ltd., published May 06, 2015) Tubular air filter and gas turbine system having the same Prior art 2: Utility model registration No. 20-0433980 (Korea Western Power Co., Ltd., published on December 14, 2006) Air filter structure installed on suction side of gas turbine air-cooled generator

It is an object of the present invention to provide an apparatus for filtering intake air of an air treatment system which allows the pollutants contained in the outside air introduced into the air treatment system to be removed stepwise while simultaneously preventing freezing.

According to a preferred embodiment of the present invention, the filtration apparatus for the intake air of the air treatment system comprises: a foreign matter removing unit for removing foreign matter from the air introduced from outside; A primary filter unit for removing fine particles or moisture having a predetermined diameter from air passing through the foreign material removing unit; And a secondary filter unit for removing fine particles or moisture from air transferred to the primary filter unit, wherein the air is introduced into the foreign matter removing unit in a direction different from a direction in which gravity acts on the foreign matter, The incoming air flows in a direction different from the air flowing into the foreign matter removing unit.

According to another preferred embodiment of the present invention, the foreign matter removing unit and the primary filter unit are formed of a laminated structure unit or disposed separately from each other.

According to another preferred embodiment of the present invention, the cleaning unit for cleaning the primary filter unit and the scattering prevention unit for preventing scattering in the cleaning process of the cleaning unit are further included.

According to still another preferred embodiment of the present invention, a freeze prevention heater for freezing frozen fine particles formed in the foreign matter removing unit or the primary filter unit is further included.

According to another preferred embodiment of the present invention, the foreign substance removing unit includes a plurality of curved guide paths, and at least one foreign matter removing blade is formed in the curved guide path.

The filtration apparatus according to the present invention allows the removal of moisture or fine particles from the air inlet path stepwise in the filter unit to thereby completely remove moisture or fine particles contained in the outside air. Further, by separately installing a cleaning device, deterioration of filtration performance is prevented. In addition, the filtration apparatus according to the present invention prevents the freezing of moisture according to the temperature of the outside air, thereby improving the filtration performance.

1A and 1B show an embodiment of a filtration apparatus according to the present invention.
2 shows an embodiment of a secondary filter unit and a foreign matter removal unit which can be applied to the filtration apparatus according to the present invention.
3 is a block diagram showing an embodiment of the operating structure of the filtration apparatus according to the present invention.
Fig. 4 shows another embodiment of the filtration apparatus according to the present invention.
FIG. 5 illustrates an embodiment of the scattering prevention structure generated in the cleaning process of the cleaning unit applied to the filtration apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

The air treatment system herein is an air conditioning system. Air purifying devices, air filtering devices, or any device or engine that processes and processes external air, including combustion engines. For example, a combustion engine may include a gas turbine of a power plant, as well as any organs, devices or installations for which air is required for combustion or cooling during operation. The air conditioning system also includes an air purification device installed in a building or a factory, and an internal and external air circulation device in an underground space such as a subway. The air purification apparatus includes an air circulation apparatus such as a work site where fine dust is generated, a semiconductor facility requiring removal of ultrafine contaminated fine particles, or a hospital requiring removal of microorganisms. Air means outside air, but may include pre-filtered air or air pre-cleaned with ambient air or mixed with microbial removal material. Therefore, the present invention is not limited by the type of air treatment system, the characteristics of the introduced air, or the installation environment.

In the following, the present invention will be described with respect to air intake and filtration of combustion engines, but this is illustrative only and the present invention is not limited to the embodiments shown and can be applied to various air handling systems, including air conditioning systems or air purification systems, It is self-evident.

1A and 1B show an embodiment of a filtration apparatus 10 according to the present invention.

1A and 1B. A filtration apparatus (10) according to the present invention includes a foreign matter removing unit (111) for removing foreign matter from air introduced from the outside; A primary filter unit 112 for removing fine particles or moisture having a predetermined diameter from air passing through the foreign material removing unit 111; And a secondary filter unit (15) for removing fine particles or moisture from air delivered from the primary filter unit (112), and the air is introduced into the foreign matter removing unit (111) in a direction different from the direction in which gravity acts on the foreign matter. And the air flowing into the secondary filter unit 15 flows in a direction different from the air flowing into the foreign matter removing unit 111. [

The filtration apparatus 10 according to the present invention may have an air inflow structure in which a plurality of hoods are arranged in layers. Specifically, the housing H may have external air inflow units 11a, 11b, and 11c having a hood or hood-like shape. Each of the inflow units 11a, 11b, and 11c may be arranged in layers at different heights, and outside air may be introduced from below the inflow units 11a, 11b, and 11c. The inflow units 11a, 11b and 11c can have the inclined ceiling 113 and the inflow units 11b and 11c located at least downward can have the inclined ceiling 113. [ The inclined ceiling 113 is formed so that fine particles or moisture removed from the air flowing into the upper inflow units 11a and 11b are removed from the ceiling surface while at the same time the outside air is easily introduced into the inflow units 11a and 11b do.

The foreign matter removing unit 111 and the primary filter unit 112 may be disposed at the inlet of the inlet units 11a, 11b, and 11c. The foreign matter removing unit 111 may include a mesh structure, a porous material, or a flow path for forming a sufficiently small diameter for removal of contaminants or moisture having a relatively large diameter included in the air. The foreign matter removing unit 111 described below may include a vane shape or a curved guide path in which a plurality of blades are continuously disposed. The primary filter unit 112 may be disposed above the foreign matter removing unit 111. [ The primary filter unit 112 may be, for example, a pre-filter, and may form a foreign matter removing unit 111 and a laminated structure unit. Such a multi-layer structure unit prevents moisture or fine particles from being dispersed in other directions, thereby removing all foreign matter or moisture above a predetermined size. The outside air having passed through the primary filter unit 112 can be led to the secondary filter unit 15.

According to the present invention, the flow directions of the air flowing into the primary filter unit 112 and the secondary filter unit 15 may be different from each other. Specifically, the air flowing into the primary filter unit 112 flows in a direction different from the direction in which gravity acts on the foreign matter, and the air introduced into the secondary filter unit 15 flows into the foreign matter removing unit 111 or the primary filter unit 112 The air can flow in a different direction. Preferably, the air entering the secondary filter unit 15 can flow in a direction parallel or parallel to the plane of the ground, and thereby the amount of incoming air can be easily controlled. The secondary filter unit 15 may be composed of a filter layer capable of removing fine particles having a relatively small diameter as compared with the primary filter unit 112 and may be formed of a plurality of filter layers capable of removing all the fine particles to be preferably removed . The primary filter unit 112 or the secondary filter unit 15 may comprise various filters or filter layers and the invention is not limited by the type of filter.

According to the present invention, the cleaning unit 12 having a plurality of nozzles 121 can be arranged to be positioned above the primary filter unit 112. The cleaning unit 12 can be arranged to be movable up or down or rotated along the guide unit 13 by a drive unit 14 such as a motor.

The nozzle structure, the moving structure, or the cleaning liquid injection structure of the cleaning unit 12 can be variously made, and the present invention is not limited to the embodiments shown.

The air introduced into the inflow units 11a, 11b and 11c is cleaned to a required level while passing through the laminated structural unit and the secondary filter unit 15 and is discharged to the outlet 16 formed in the housing H, . The filtration apparatus 10 can be installed in various environments and can be exposed to an external environment. Depending on the installation environment, condensation may occur due to temperature difference or moisture may freeze. Such condensation or freezing can change the characteristics of the incoming air and reduce the combustion efficiency when mixed with the fuel. Or must be pre-dried before air enters the gas turbine. In order to solve such a problem, a freeze prevention heater 17 may be disposed to prevent freezing or condensation of moisture. The anti-freeze heater 17 may be in the form of a hot wire embedded in the housing H or the laminated structure unit, but may preferably be made of a lamp structure. Specifically, as shown in Figs. 1A and 1B, for example, the anti-freezing heater 17 may be disposed above each laminated structural unit and may be provided with a heat drying or heater function such as an infrared lamp, a halogen lamp, &Lt; / RTI > The anti-freezing heater 17 may have a function of controlling the humidity of the air to be introduced while preventing freezing. The anti-freezing heater 17 may be a heater of various structures, and the present invention is not limited to the embodiments shown. On the other hand, the freeze prevention heater 17 may be disposed at various positions. For example, the freeze prevention heater 17a may be disposed below the foreign matter removing unit 111 into which the outside air flows, so that the moisture can be removed from the air introduced into the filtering apparatus 10 in advance. The freeze prevention heater 111 may be attached to the foreign substance removing unit 111 or may be installed separately from the foreign substance removing unit 111 and may be installed at a position adjacent to each foreign substance removing unit 111. The anti-freezing heaters 17, 17a can be disposed at various positions as described above, and the present invention is not limited by the installation position or structure of the freeze prevention heaters 17, 17a.

As described above, the filtration apparatus 10 according to the present invention removes contaminants in the air step by step, thereby purifying the air introduced from the outside air to a required level. It will be apparent to those skilled in the art that a variety of filter layers or filters may additionally be applied to the filtration device 10.

Fig. 2 shows an embodiment of a secondary filter unit 15 and a foreign matter removing unit which can be applied to the filtration apparatus according to the present invention.

2 (a), the secondary filter unit 15 can be made in a V-bank structure, and a plurality of plate-shaped inlet angle-adjusting filters 151 are connected to each other by an inlet angle- It can be made to be continuous V-shaped when connected. The secondary filter unit 15 allows the inlet air to flow into the filter at an angle other than the vertical angle by the inlet angle control filter 151, thereby substantially enlarging the filtration area. Each inlet angle-adjusting filter 151 may be arranged to be detachable, and may be formed of a plurality of filter layers. The inflow angle adjustment filter 151 adjacent to each other can adjust the inflow angle of the air by the inflow angle control bracket 152.

As shown in Fig. 2, the secondary filter unit 15 may be provided with a freeze prevention heater 17a. For example, when the secondary filter unit 15 has a V-bank structure, the freeze prevention heater 17a may be disposed on each adjustment bracket 152. [

The secondary filter unit 15 having various structures can be applied to the filtration apparatus according to the present invention and the present invention is not limited to the embodiments shown.

Referring to FIG. 2 (b), a path for introducing outside air formed in the foreign substance removing unit may be curved guide paths 211a to 211k, and a plurality of curved guide paths 211a to 211k may be adjacent to each other And may be arranged in a matrix form. At least one foreign matter removing blade 231a to 231k may be disposed in each of the curved guide paths 211a to 211k. The curved lead paths 211a to 211k may be formed of a plurality of partial paths bent in different directions, and each partial path may have the same or different radius of curvature. As described above, the outside air can then flow upward from below and bump at deflected points in different directions during the inflow. As a result, some of the foreign matter or moisture can be naturally discharged to the outside. The foreign matter removing blades 231a to 231k disposed inside or outside the curved guide paths 211a to 211k may be in the shape of a blade inclined downward and may be formed of a contaminant It is possible to have a function of preventing the inflow of the liquid. In addition, through holes may be formed in the foreign material removing blades 231a to 231k, and some of the foreign material removing blades 231a to 231k disposed at different heights may be arranged to overlap with each other. As described above, various removal structures for preventing the entry of foreign substances or moisture having a predetermined size or larger can be disposed in the foreign matter removing unit 111, and the present invention is not limited to the illustrated embodiments.

3 is a block diagram showing an embodiment of the operating structure of the filtration apparatus according to the present invention.

Referring to Fig. 3, the cleaning unit 12 or the power prevention heater 17 in the filtration apparatus according to the present invention can be automatically operated. And the entire operation of such a device can be controlled by the control unit 33. [

Various detection sensors 36 may be arranged to detect the characteristics of the air entering the primary filter unit 35, the laminate unit or the housing. The detection sensor 36 may be, for example, a temperature detection sensor, a humidity detection sensor, a pressure sensor or a position detection sensor. And the information detected by the detection sensor 36 may be transmitted to the control unit 33. [ The control unit 33 can judge the characteristics or the external environment of the air introduced by the air inflow unit 34 such as an inflow unit or the air passed through the filter unit 35 according to the detected detection information. For example, it can be judged that cleaning is required when the amount of air passing through the filter unit 35 is significantly lowered. The control unit 33 may include an operation database 37 that allows the user to determine the filter state, whether freezing occurs, or the humidity state according to the information transmitted from the detection sensor 36. [ According to the operation data stored in the operation database 37, it is possible to determine whether the cleaning unit 12 or the anti-freezing heater 17 is operating or not. The control unit 33 can adjust the amount of air introduced by adjusting the air inflow unit 34 as necessary. For example, it is possible to prevent air from being introduced into the cleaning unit 12 during the cleaning process.

The filtration apparatus according to the present invention may have various automatic operation structures and the present invention is not limited to the embodiments shown.

Fig. 4 shows another embodiment of the filtration apparatus according to the present invention.

FIG. 4A shows a side view of the primary filter unit 112 and the secondary filter unit 15, and FIG. 2B shows another embodiment of the primary filter unit 112. FIG.

4A, the primary filter unit 112 including the pre-filter may be installed separately from the foreign matter removing unit, the air inlet direction AF may be horizontal with respect to the ground, May be introduced into the primary filter unit 112. A cleaning unit 411 may be installed in the primary filter unit 112 and the cleaning unit 411 may be a gear or a pulley 412 operated by a drive unit 413 and a drive unit 413, ). The cleaning unit 411 may be, but is not limited to, a brush or a nozzle. And a heater 17, such as a near-infrared lamp, for preventing freezing or adjusting humidity, may be installed inside the primary filter unit 112 or at another suitable location.

4B shows another embodiment of the primary filter unit 112. The primary filter unit 112 may be composed of a plurality of inclined filter layers 421. [ And a cleaning unit 422 for cleaning each of the gradient filter layers 421 may be disposed above the gradient filter layer 421. [ The inclined filter layer 421 has a function of removing a large amount of fine dust, and the collecting performance of the inclined filter layer 421 can be maintained by the cleaning unit 422. The cleaning unit 422 may be composed of a moving member movably disposed by a drive unit such as a motor and a plurality of spray nozzles disposed in the moving member. One direction of the gradient filter layer 421 may be completely cleaned by the plurality of spray nozzles disposed in the cleaning unit 422 and the cleaning unit 422 may be moved by the drive unit in the other direction of the gradient filter layer 421 The entire inclined filter layer 421 can be cleaned. The heater 17 for drying together with the cleaning unit 422 can be disposed in an appropriate position.

The washing liquid used for washing should be able to be collected by a collection means which does not interfere with the air flow (AF). For this purpose, a cleaning liquid collecting unit 423 connecting the different ends of the upper and lower inclined filter layers 421 may be disposed between the adjacent inclined filter layers 421. The cleaning liquid collecting unit 423 may be formed into a structure having a curved shape as a whole and naturally flowing the cleaning liquid. And each of the cleaning liquid collection units 423 may be connected to an appropriate connection conduit and collected in the lower tank and discharged to the outside. The cleaning liquid collecting unit 423 can form an airflow guiding curved surface for guiding the airflow between adjacent inclined filter layers 421. [ Specifically, the airflow entering the gradient filter layer 421 needs to be directed in the form of a stream passing through the filter layer formed in the gradient filter layer 421. For this purpose, the cleaning liquid collecting unit 423 may form an airflow guiding curved surface connecting one end and the other end of the upper and lower inclined filter layers 421. The airflow guiding curved surface can be formed into a curved shape that leads the airflow to the oblique filter layer 421 while gradually becoming narrower from the inlet through which the airflow is introduced.

As shown in Fig. 4, a plurality of anti-freezing heaters 17c to 17f may be disposed in the primary filter unit 112 or the secondary filter unit 15. Fig. Further, a drain may be installed in the primary filter unit 15, and a freeze prevention heater 17e may be disposed in the discharge unit. The anti-freezing heater 17e disposed in the discharge unit can be made in a structure that prevents moisture in the frozen state from flowing backward in the heater direction.

The primary filter unit 112 or the secondary filter unit 15 and the freeze prevention heaters 17c to 17f disposed therein can be made in various structures and the present invention is not limited to the embodiments shown.

As described above, the primary filter unit 112 must be cleaned by the cleaning unit after being used for a certain period of time, and scattering of the cleaning liquid may occur in the cleaning process of the cleaning unit.

In the cleaning process of the primary filter unit 112 by the cleaning unit, the cleaning liquid is scattered and the pollutants stacked on the filter layer may be scattered together. As a result, the pollutants may not be completely washed out, The performance of the entire filter device including the filter unit 112 may be deteriorated. Such a problem due to scattering can be similarly generated in the cleaning process of the secondary filter unit. Therefore, an appropriate means for preventing scattering generated in the cleaning process of the filter unit is required.

FIG. 5 illustrates an embodiment of the scattering prevention structure generated in the cleaning process of the cleaning unit applied to the filtration apparatus according to the present invention.

Referring to FIG. 5, a plurality of nozzles 121 may be installed in a movable cleaning unit 12 disposed above the primary filter unit 112, and a plurality of nozzles 121, The range SR can be determined. The injection range SR can be determined by the number of nozzles or the arrangement structure and can be set so that they do not overlap with each other in the primary filter unit 112. [ The scattering prevention units 511a, 511b, 512a, and 512b may be formed in a shape that covers the cleaning unit 12 from above or a surrounding shape. Specifically, the scattering prevention units 511a to 512b may be formed so as to separate the cleaning unit 12 from each other. The upper side of the primary filter unit 112 can be sealed by a cover for installation of the cleaning unit 12. [ Therefore, the scattering prevention units 511a, 511b, 512a and 512b are formed along the periphery of the cleaning unit 12 and include one scattering prevention walls 511a and 511b for preventing scattering in one direction like the X- And two scattering prevention walls 512a and 512b that prevent scattering in two directions perpendicular to one direction. The scattering prevention units 511a to 512b may be constructed to be inserted into and fixed to the inside of the main cover forming the outer cover, and may be made detachable from the main cover. A droplet prevention plate 52 such as a demister is disposed between the first and second shake prevention walls 511a and 511b and the second shake prevention walls 512a and 512b to remove moisture that is suspended during the cleaning process. The droplet prevention plate 52 may be disposed so as to be spaced apart from the primary filter unit 112 and separated from the lower space and the upper space.

The scattering prevention units 511a to 512b may be formed in various structures in which a closed space in which the primary filter unit 112 and the nozzles 121 of the cleaning unit 12 are arranged vertically is formed, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Filtration device 11a, 11b, 11c: Inflow unit
12: cleaning unit 13: guide unit
14: drive unit 15: secondary filter unit
16: outlet 17, 17a to 17f: freeze prevention heater
33: control unit 34: air inflow unit
35: primary filter unit 36: detection sensor
37: operation database 52: droplet prevention plate
111: foreign matter removing unit 112: primary filter unit
113: inclined ceiling 121: nozzle
121a: nozzle tip 151: inlet angle adjusting filter
152: inflow angle control brackets 211a to 211k: curved guide path
231a to 231k: foreign matter removing blade 411: cleaning unit
412: Pulley 413: Drive unit
421: gradient filter layer 422: cleaning unit
423: Cleaning liquid collection unit 511a, 511b: 1 Shatterproof wall
512a, 512b: 2 Shatterproof wall AF: Air inflow direction
H: housing SR: injection range

Claims

A foreign matter removing unit (111) for removing foreign matter from the air introduced from the outside;
A primary filter unit 112 for removing particulate matter or moisture having a predetermined diameter from air passing through the foreign matter removing unit 111; And
And a secondary filter unit (15) for removing fine particles or moisture from the air delivered to the primary filter unit (112)
The air is introduced into the foreign matter removing unit 111 in a direction different from the direction in which gravity acts on the foreign matter, and the air introduced into the secondary filter unit 15 is different from the air introduced into the foreign matter removing unit 111 Wherein the flow of air in the intake air is controlled by the flow of air.

The apparatus according to claim 1, wherein the foreign matter removing unit (111) and the primary filter unit (112) are formed of a laminated structural unit or are arranged separately from each other.

The air treatment system according to claim 1, further comprising a cleaning unit (12) for cleaning the primary filter unit (111) and a scattering prevention unit (511a to 512b) for preventing scattering in the cleaning process of the cleaning unit Filter apparatus for intake air.

The apparatus according to claim 1, further comprising a freeze prevention heater (17) for freezing frozen particulate formed in the foreign matter removing unit (111) or the primary filter unit (112).

The foreign substance removing unit 111 according to claim 1, wherein the foreign matter removing unit 111 includes a plurality of curved guide paths 211a to 211k, and at least one foreign matter removing blade 231a to 231k is formed in the curved guide paths 211a to 211k Wherein the air filtering system comprises: