Patent Application
20190039077
The present invention relates to a method for manufacturing an electrical dust filter and the electrical dust filter manufactured by the same, in particular the method for manufacturing the electrical dust filter removing various micro particles in a contaminated stream by making the particles be charged in the stream in the course of passing a collecting electrode in a manner of discharging by means of a discharging electrode displaced within a cylindrical shape of the collecting electrode.
The electrical filter is an apparatus for collecting a dust charged as positive or negative by making a collecting electrode as positive and a discharging electrode as a negative. The filter can apply a high voltage between the collecting electrode and the discharging electrode for collecting dust to generate a corona discharge, and can collect various particles such as dust, gas or foul smell by an electrical force generated from an non-uniform electrical field.
Therefore, the electrical filter may be used in a large industrial facility generating a large of dust, gas or bad smell. And also it may be utilized for removing a large amount of oil mist generated in the course of recovering a polluted soil by thermal desorption in an industrial facility to store or handle oil products, or in the course of producing a fiber or polymer product in the related manufactory. And also the electrical filter may be used for clearing dust or bad smell generated from a cleaner, an air conditioner or a hood in a home or eatery.
There is Korean Patent No. 10-1506324 ‘A range hood type of a plasma electrical dust collecting filter apparatus’ that is invented by the inventor of this application and registered in KIPO as a known electrical dust collecting filter apparatus. Referring to
The purpose of the present invention is provided with a method for producing an electrical filter in which a plastic process is substituted for assembling a frame with a fixing hole for assembling a collecting electrode, and hence the total weight of the filter can be reduced by preventing the collecting electrode from being thick to improve the process efficiency and the handling easiness as well as simplify the assembling process.
An another purpose of the present invention is to provide a method for manufacturing an electrical dust filter to reduce the possibility of a damage or a defect on assembling to improve a quality of the dust filter.
An another purpose of the present invention is to provide an electrical dust filter in which a damaged or aged collecting electrode can be exchanged easily, in particular on operating, to result in reducing a maintaining or repairing cost.
In an embodiment of the present invention, method for producing an electrical dust filter comprises: preparing a board type of a frame to have a plurality of assembling holes, a collecting electrode to have a plurality of hooking protrusions protruded on a circumference adjacent to an end part 25 and arranged along a periphery, a discharging electrode to generate an electrical discharge and be arranged along an axle line direction, and a discharging frame to couple the discharging electrode to the frame in an insulating state; assembling the collecting electrode to the assembling holes of the frame; coupling the discharging electrode to the frame with an insulating member after the collecting electrode is inserted into the assembling hole; and arranging the discharging electrode on the frame in direction of the axle line within the collecting electrode wherein the discharging frame is insulated from the frame, wherein the step of assembling comprising, inserting the collecting electrode into the assembling holes of the frame by deforming the collecting electrode temporarily with elasticity in a radial direction; and forming a boundary part by pressing the end parts of both of the collecting electrode on a surface of a plate member protruded out of the plate member on being inserted into the assembling holes in the axil direction, wherein the step of the preparing comprising, cutting a wire W with a length corresponding to that of the discharging electrode; forming a connecting means at both ends of the wire; and forming a tensile spring at either end of the wire with the connecting means in an adjacent inner part of the connecting means in the axial direction.
In other embodiment of the present invention, the preparing step further comprises, protruding a plurality of hooking protrusions at the end part according to a pair of opposite sides among four sides of the rectangular metal board object; rolling the other opposite sides among four sides of the rectangular metal board object to protrude the hooking protrusions; and welding the other opposite sides of the metal board S to meet by rolling.
In another embodiment of the present invention, the connecting means comprises, a front angled part formed by bending the end part of the discharging electrode bordering a first bending part angled backwardly and eventually to a second bending part; and a rear angled part formed by bending the discharging electrode bordering the second bending part to contact the wire rear end of the discharging electrode with an inner wall of the discharging frame at the opposite part of the second bending part.
In still another embodiment of the present invention, the discharging frame is placed at one side of the board member 11, and the discharging electrode has a shape of a circular section rod supported by the discharging frame.
In still another embodiment of the present invention, the discharging electrode has a plurality of discharging cores protruded around the circular section rod in the radial direction.
In still another embodiment of the present invention, in the step of installing the insulating member, the insulating member is secured in removable structure within the frame to avoid a contact with a fluid.
In still another embodiment of the present invention, the electrical dust collecting filler manufactured by the above method comprises: a frame forming a shape; a plurality of dust collecting electrodes installed between a plurality of board members separated each other and penetrating the plurality of board members in order that a fluid to be collected can pass; and a plurality of discharging electrodes arranged within the dust collecting electrode in the axial direction using a plurality of discharging frames coupled to the frame in insulating structure respectively, wherein each dust collecting electrode has a boundary part to secure within a plurality of assembling holes, wherein the boundary part is formed by folding reversely to the surface of the board member when inserting into a plurality of assembling holes of the frame.
In still another embodiment of the present invention, the dust collecting electrode comprises a plurality of hooking protrusions placed at the distal part adjacent to the boundary part and protruded at an outer circumference to secure the board member 11 between boundary parts.
In still another embodiment of the present invention, the boundary part has a ring shape to have an arch shape longitudinal section.
In accordance to the method for manufacturing the electrical dust collecting filter and the electrical dust collecting filter thereby, the distal part of the dust collecting electrodes are protruded partly in the outside when the dust collecting discharging electrode is assembled to the frame. When the dust collecting electrode is placed at the predetermined location, the boundary part can be formed by contacting both of the end parts of the dust collecting electrode at the surface of the board member with a pressing tool thereby to finish the assembling process of the dust collecting electrode simply. Therefore, it is possible for the dust collecting electrode to be thin and light, because the dust collecting electrode is not welded to the board member. Hence the manufacturing efficiency can increase in spite of a large number of the dust collecting electrodes. And also, because the dust collecting electrode is coupled to the frame with a plastic process, any damage or defect may not be made on the dust collecting electrode or the frame in the course of assembling, resulting in the increased quality of the dust collecting filter. And also, the dust collecting electrode can be separated from the assembling holes by unfolding the boundary part folded reversely, therefore the dust collecting electrode can be exchanged easily, resulting in an increased maintenance.
The above and other aspects, features and advantages of certain exemplary embodiments of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
Exemplary embodiments of the present invention will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Also, the terms used herein are defined according to the functions of the present invention. Thus, the terms may vary depending on intension and usage. That is, the terms used herein must be understood based on the descriptions made herein.
As shown
The frame 3 may make a whole shape of the dust collecting filter 1, and may have, not limited to, a shape of a rectangle parallelepiped in order that the plurality of dust collecting electrodes 5 and the discharging electrodes 7 can be arranged side by side in a path of a fluid to be collected. The frame 3 may comprise a pair of board members 11 to be placed at the entering part and exiting part of the fluid to pass the dust collecting electrodes 5, respectively, and a plurality of connecting members 13 placed at corner parts of the board members 11 for connecting the board members 11.
And also, an insulating member 15 such as an insulator or the like may be installed within the frame in order that to connect a discharging frame 19 to the frame in an insulating state, wherein the insulating member 15 may be fixed in an insulting room 17 in order to insulate to the discharging frame 19 and to decrease the contacting amount of the fluid for avoiding some contamination. At the same time, the discharging frame 19 may be separated from the frame 3 by being secured within the insulating room 17 in removable fashion.
The plurality of dust collecting electrodes 5 and discharging electrodes are installed at the frame 3, and a plurality of assembling holes 18 may be formed to penetrate the board member 11 for installing the dust collecting electrode 5, as shown in
The dust collecting electrode 5 is a board shape of material, and the fluid passes through the dust collecting electrode 5 and some particles such as dust, gas or bad smell components may be captured by the dust collecting electrode 5. As shown in
In particular, as shown
And also, as shown in
The discharging electrode 7 may generate an electric field for electric discharging together with the dust collecting electrode 5, and, as shown in
As shown in
As shown in
As shown in
The frame 3 may have a structure capable of securing the plurality of collecting electrodes 5 and discharging electrode 7, hence a plurality of assembling holes 18 may be formed through the board 11 as described below. And also, the pair of discharging frames 19 may be displaced in an outer part of the board 11 in parallel.
The collecting electrode 5 may become a route, and a collecting space collecting particles such as dust, gas, bad smell and the like. The collecting electrode 5 may be a shape of a board made from a metal and may have a shape of a cylinder, a polyhedron or the like. Each collecting electrode 5 may be secured between the upper and lower board 11 of the frame 3 in parallel and each end part of the collecting electrodes 5 may penetrate the board 11 to form each passage respectively and to collect the particles together. In particular, the collecting electrodes 5 may be a shape of a thin metal board to make a light structure, and both end parts 25 of each collecting electrode 5 may be folded outward to form a boundary part 21. The boundary part 21 may become a ring structure having a shape of an arch in a longitudinal sectional view, but the shape of the boundary part 21 may be processed as various forms according to a pressing surface of a press tool P. When the boundary part 21 folded outward is inserted in the assembling hole 18 of the frame 3, the collecting electrode 5 can contact closely to the surface of the board 11 to be secured to the assembling hole 18 or the frame 3 tightly. And also, a plurality of hooking protrusions 23 may be protruded at an inner part of the outer circumferential surface adjacent to the boundary part 21 of the end part 25 arranged in the direction of the circumference as corresponding to the boundary part 21. And then board member 11 may be between the boundary part 21 and the hooking protrusion 23 to increase the contacting force to the frame 3.
The discharging electrode 7 made from a metal material in the form of a cylinder can generate an electrical field with the collecting electrode 5 to make a corona discharging, and the discharging electrode 7 may be arranged in the axial direction as one by one. One end of the discharging electrode 7 may be secured at one side of the discharging frame 19, while other end of the discharging electrode 7 may be secured at the other side of the discharging frame 19. The discharging frame 19 may be displaced at the outer side of the board member 11 using the insulating member 15. And hence, the discharging electrode 7 may be secured to the discharging frame 19 as insulated to the frame 3 and the collecting electrode 5. The discharging electrode 7 may be a form of a wire for reducing the total weight of the filter 1 by reducing the diameter of the discharging electrode 7. A connecting unit 31 may be utilized for fixing each end of the discharging electrode 7 instead of welding, and the connecting unit 31 can fix the discharging electrode 7 at the discharging frame in removable fashion.
The connecting unit 31 may have various structures, and preferably the connecting unit 31 may have a form in which the connecting unit 31 can be coupled as one touch by making a bending structure wherein the bending structure is made by bending the end part of the wire that is the discharging electrode 7. The connecting unit 31 comprises a front end angled part 32 and a rear end angled part 34. The front end angled part 32 may be formed by bending both ends of the wire as a first bending part 33 is a boundary, wherein the bent part may be angled as the wire is more apart from the axial line as proceeding backward, and then the wire extends to a second bending part 35. The rear end angled part 34 may be formed by bending the first bent ends of the wire as a second bending part 35 is a boundary, wherein the bent part extends downwardly in an angled direction to contact an inner surface of the discharging frame 19 at the opposite of the second bending part 35 when the rear part 37 of the wire is inserted into the connecting hole 29. Both ends of the discharging electrode 7 may have the connecting holes 29 having a smaller diameter than a gap between the second bending part 35 and the rear end part 37 of the wire to form the connecting unit 31 at the both ends of the discharging electrode 7. As an alternative example shown in
As shown in
The electrical dust filter 1 may generate an electrical field by making the collecting electrode 5 and the discharging electrode 7 positive and negative, respectively. The particles to be collected and contained in the stream such as dust, gas, bad smell or the like may be discharged as negative ions by a corona discharge of the discharging electrode 7 to be collected at the collecting electrode. And the purified stream can be exhausted out of the filter 1.
The method for manufacturing the filter is described in detail below.
Referring to
In the preparing step S10, components for the filter 1 such as the frame 3, the collecting electrode 5, the discharging electrode 7 and the discharging frame may be prepared. At first the frame 3 may be prepared for assembling the collecting electrode 5 and the frame 3 has a pair of board members 11 front and back, respectively, wherein the board members 11 has a plurality of assembling holes 18. The collecting electrode 5 may be manufactured, wherein the plurality of hooking protrusions 23 may be protruded at the outer circumferential surface adjacent to the end part 25 and arranged along in the direction of the periphery. As shown
In the sheet metal working step S11, as shown in
And then, as shown in
And then, the welding step S13 may be proceeded following the rolling step S12. In the welling step S13, the pair of edges to meet each other by rolling the metal board material S as the form of the cylinder may be welded, wherein the welded edges are the longer edges with the hooking protrusion 23. The welding process may comprise seam welding, spot welding, laser welding and the like.
The preparing step S10 may comprise a cutting step S14, a first bending step S15 and a second bending step S16, as shown
In the cutting step S14, a wire W to be made into the discharging electrode 7 may be cut in some length considering a gap of the discharging frame 19.
And also, a connecting unit 31 may be formed at each end of the cut wire W in the bending step S15. The wire W cut in a suitable length is bent as a first process, wherein the each end of the cut wire W may be bent as a first bending part 35 is a boundary. The bent wire W may become more separated from the axial line as extending backward, and, than be angled upward to form a front end angled part 32 contacting an inner circumferential surface of the collecting electrode 5 at a second bending part 35. And then, the end of the front end angled part 32 may be bent as the second bending part 35 is a boundary to form a rear end angled part 34. The wire W may angle downward from the second bending part 35 to contact an inner circumferential surface of the collecting electrode 5 at a second contacting part 37 opposite to the second bending part 35.
Finally, the tensile spring 27 may be formed at one side of the wire W in the second bending step S16. One either end of the wire W with the connecting unit 31 may be rolled into a coil spring to form the tensile spring 27 on the axial line, wherein one either end may be a part adjacent to the connecting unit 31.
The main body as the form of the wire, the connecting unit 31 of the ends of the main body and the tensile spring 27 adjacent to the connecting unit 31 may be manufactured separately, but preferably the connecting unit 31 and the tensile spring 27 may be in a single material by bending one strain wire as mentioned above.
The frame 3 and the collecting electrode 5 may be assembled in the assembling step of the collecting electrode S20 comprising the inserting step S21 and finishing step S22.
In the inserting step S21, the collecting electrode 5 may be inserted into each assembling hole 18 formed on the front and rear board member 11 of the frame 3. The collecting electrode 5 may be pressed in the radial direction to be deformed for inserting. The thin board type of the metal board material S may be manufactured by rolling into the shape of the cylinder to have elastic property as mentioned above. Hence the collecting electrode 5 can be inserted into the assembling hole 18 easily in spite of the hooking protrusion 23. The end part 25 of the collecting electrode 5 inserted at a predetermined location in a snap method may be protruded, but may recover as the original form by elasticity to prevent from breaking away out of the assembling hole after being assembled.
The assembling process may be finished in the finishing step S22. The process for assembling the collecting electrode 5 may be finished by pressing the end part 25 on the surface of the board member 11 of the frame 3 in sequence or at the same time, wherein the end part 25 of the collecting electrode 5 may be protruded out of the assembling hole 18 after being inserted into the assembling hole 18. Hence the end part 25 protruded out of the assembling hole 18 may be formed as a conferential part 21 by being pressed on the surface of the board member 11.
A pressing tool P may be used as a dedicated tool for pressing the end part 25 of the collecting electrode 5. The pressing tool P may have an arch shape of a pressing groove G at a middle portion of an outer circumferential surface with a same diameter as that of the collecting electrode 5. And the pressing groove G may press the end part 25 of the collecting electrode 5 in sequence or at the same time in the axial direction to make the end part 25 be a shape similar to the sectional shape of the pressing groove G in the arch longitudinal sectional shape.
The discharging frame 19 may be mounted on an outer part of the board member 11 of the frame 3 in the mounting step of the discharging frame S30. The discharging electrode 7 may be mounted within the collecting electrode 5 by being installed at the board member 11 previously after the collecting electrode 5 is inserted into the assembling hole 18 of the frame 3. The discharging frame 19 may be insulated to the frame 3 or the collecting electrode 5 by being mounted at the frame 3 using the insulating member 15 such as an insulator, wherein the insulating member 15 may be secured in removable fashion. The insulating member may be coupled in a removable manner for removing afterward, in particular may be displaced within an insulating room 17 located in the frame 13 for avoiding the contact with an air stream during collecting particles.
The discharging electrode 7 may be arranged within the collecting electrode 5 in the axial direction in the assembling step of the discharging electrode S40, wherein the discharging electrode 7 may be mounted within the collecting electrode 5 using the discharging frame 19 secured at the frame 3 as an insulating structure removable fashion. A plurality of connecting holes 29 may be formed on the inner surface of the discharging frame 19 as each connecting hole 29 matches each collecting electrode 5. Hence the discharging electrode 7 having the connecting unit 31 at both end parts may be coupled to the discharging frame 19 easily by being inserted into the connecting holes 39 in one touch pressing manner. The connecting unit 31 may be inserted within the connecting hole 39 easily because a second contacting part 37 is in the forward direction, while it is difficult to remove the connecting unit 31 from the connecting hole 29 without a particular tool because the second contacting part 37 is hooked in the reverse direction. And the tensile spring 27 may be formed at either end of the discharging electrode 7. Hence the tensile spring 27 may be drawn previously for generating a tensile force when the connecting unit 31 is inserted into the connecting hole 29 to prevent the discharging electrode 7 from being loose in spite of the high heat.
According to present invention, the assembling and manufacturing efficiency of the dust collecting filter may be improved in spite of the number of the used dust collecting electrodes, because the dust collecting electrodes are made as a thin plate shape and a light weight structure and the dust collecting electrodes is not welded to the board members.
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 in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2016-0014445 | Feb 2016 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2016/009563 | 8/29/2016 | WO | 00 |
