WO2020218660A1

WO2020218660A1 - Cleaner for removing industrial fine dust

Info

Publication number: WO2020218660A1
Application number: PCT/KR2019/005167
Authority: WO
Inventors: 김경천
Original assignee: 주식회사 시코코리아
Priority date: 2019-04-26
Filing date: 2019-04-30
Publication date: 2020-10-29
Also published as: KR102177941B1; KR20200125091A

Abstract

The present invention relates to a cleaner for removing industrial fine dust. The cleaner for removing industrial fine dust comprises: a filter housing (11) having an accommodation space formed therein; a fixing cap (12) formed above the filter housing (11); a discharge filter (13) coupled to a fixing means (12); an inlet (14) formed under the filter housing (11) to introduce external air; a protection cover (15) formed above the discharge filter (13) to guide air discharged by the discharge filter (13) to the sides; and a drive unit disposed inside the filter housing (11) to introduce the external air into the inlet, wherein at least one polyester filter and HEPA filter are disposed inside the filter housing (11).

Description

Vacuum cleaner for removing industrial fine dust

The present invention relates to a vacuum cleaner for removing industrial fine dust, and specifically relates to a vacuum cleaner for removing industrial fine dust suitable for use in a clean room by sucking and removing fine dust or ultrafine dust.

A clean room is used in various process processes including semiconductor and electronic device processing fields, medical fields, or food fields, and for example, a vacuum cleaner with a HEPA filter (High Efficiency Particulate Air) is used to remove fine dust in the clean room. There is a need. A vacuum cleaner for such a clean room must be able to remove fine dust in the clean room at a level of 99.9% or higher, for example. Cleaners for removing fine dust having various structures are known in the art. Patent Publication No. 10-2017-0089529 discloses a vacuum cleaner capable of selectively receiving power from an external power source and an internal power source, and a control method thereof. Industrial vacuum cleaners need to have a filter structure capable of effectively removing external fine dust while at the same time having a structure capable of removing fine dust generated inside. However, the prior art does not disclose an industrial vacuum cleaner having such a structure.

The present invention has the following objects to solve the problems of the prior art.

It is an object of the present invention to provide a vacuum cleaner for removing industrial fine dust that prevents the generation of fine dust inside while removing fine dust inside a clean room at a level of 99.9% or more.

According to a preferred embodiment of the present invention, a cleaner for removing industrial fine dust includes a filter housing having an accommodation space therein; A fixing cap formed on the upper side of the filter housing; An exhaust filter coupled to the fixing means; An inlet formed below the filter housing to introduce external air; A protective cover formed above the exhaust filter to guide air discharged to the exhaust filter to the side; And a driving unit disposed inside the filter housing to introduce external air to the inlet, and at least one polyester filter and a HEPA filter are disposed inside the filter housing.

According to another suitable embodiment of the present invention, the drive unit becomes a BLDC motor (Brushless DC Motor), and further comprises a capture filter disposed between the polyester filter and the HEPA filter.

According to another suitable embodiment of the present invention, the capture filter and the HEPA filter are integrated while being disposed on the upper and lower surfaces of the cylinder shape.

The vacuum cleaner for removing industrial fine dust according to the present invention is applied to an industrial clean room or a biological clean room to remove fine dust containing bacteria or compounds having a size of, for example, 0.3 µm or more at a level of 99.9% or more. have. The cleaner for removing fine dust according to the present invention prevents the generation of fine dust during the operation process and prevents the fine dust introduced into the inside from leaking to the outside without being filtered through the filter.

1 shows an embodiment of a cleaner for removing industrial fine dust according to the present invention.

2 shows an embodiment of a filter structure applied to a cleaner according to the present invention.

3 shows an embodiment of a sealing structure applied to a cleaner according to the present invention.

4 and 5 illustrate an embodiment of a filter coupling structure applied to a cleaner according to the present invention.

In the following, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so if they are not necessary for the understanding of the invention, they will not be described repeatedly, and well-known components will be briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment of.

Referring to FIG. 1, a cleaner for removing industrial fine dust includes a filter housing 11 having an accommodation space formed therein; A fixing cap 12 formed above the filter housing 11; An exhaust filter 13 coupled to the fixing means 12; An inlet 14 formed under the filter housing 11 to introduce external air; A protective cover 15 formed above the exhaust filter 13 to guide air discharged to the exhaust filter 13 to the side; And a driving unit disposed inside the filter housing 11 to introduce external air to the inlet, and at least one polyester filter and a HEPA filter are disposed inside the filter housing 11.

The filter housing 11 may have a cylindrical shape as a whole and may be made of a metal material such as stainless steel or a synthetic resin material. A stable rim 111 extending in a ring shape to the outside of the filter housing 11 may be formed at the bottom of the filter housing 11. The stable rim 111 may be detachably coupled to the filter housing 11, and may be a circular ring having a thickness and a width. A moving means (CA) such as, for example, a caster may be coupled to the lower side of the stable rim 111. A fixing cap 12 may be formed on the upper side of the filter housing 11 so as to be detachable from the filter housing 11 or integrally. The fixing cap 12 may have, for example, a hemispherical shape and a fastening hole formed at a central portion thereof. In addition, the exhaust filter 13 may be inserted into the fastening hole to be coupled to the fixing cap 13. The discharge filter 13 may have a cylindrical shape as a whole, and an upper portion of the discharge filter 13 may protrude to the outside of the fixing cap 12. Air filtered in the filter housing 11 through the protruding portion of the discharge filter 13 may be finally filtered by the discharge filter 13 and discharged. External air may be introduced into the filter housing 11 through an inlet 14 formed below the filter housing 11. The inlet 14 may have a shape passing through the filter housing 11 from the outside to the inside, and one end of the suction tube 16 may be coupled. The suction tube 16 may be made of a rubber, elastomer, or synthetic resin material that can be easily bent while being made of an elastic corrugated tube structure capable of air flow. The inhaler 17 is connected to the intake tube 16 to guide external air including fine particles into the filter housing 11. The inhaler 17 may have a plurality of suction holes while being in contact with the plane, and may be coupled to one end of the fixing tube 171. The other end of the fixed tube 171 may be coupled to an induction tube 172 made of a solid material by a coupler 173, and the induction tube 172 may be connected to the suction tube 16. The fixed tube 171 by the coupler 173 may be coupled to the induction tube 172 to be detachable.

A capture filter such as a bag filter, a nonwoven filter such as a polyester filter, a HEPA filter, or an impact filter may be disposed inside the filter housing 11. Various types of foreign matter including fine particles included in the external air introduced into the filter housing 11 introduced through the inlet 14 may be filtered by the filter. The microparticles may be, for example, particles having an average diameter of 0.3 µm to 10 µm, and may include bacterial substances. Foreign matters having various sizes, including fine particles, may flow into the filter housing 11 and may be filtered by a filter disposed inside the filter housing 11. When the inlet air is introduced through the inlet 14 (IN), it may be moved upward from the bottom of the filter housing 11. Inflow of external air (IN) may be achieved by a driving means such as a motor, for example. The motor can be something like a brushless DC (BLDC) motor, for example. By applying the BLDC motor as a driving means, generation of fine dust from the brushes of the motor can be prevented. A suction fan may be coupled to the motor, and the motor may be disposed above the filter housing 11. The fixing cap 12 may have a function of sealing an upper portion of the filter housing 11, and the discharge filter 13 may be coupled to a fastening hole formed in a central portion of the fixing cap 12. The discharge filter 13 may have various structures in which the upper portion is sealed and filtered air is discharged along the circumferential surface. A sealing means 121 such as an elastic ring is installed on an upper portion of the fixing cap 12 to prevent air from leaking along the circumferential surface of the exhaust filter 13 coupled to the fixing cap 12. A protective rim 151 made of a plurality of vertical members may be formed along the circumferential surface of the fixing cap 12, and the protective cover 15 may be coupled to the protective rim 151. The protective cover 15 may be made of a transparent synthetic resin material and may have a hemispherical shape, and a circular coupling edge may be formed along the lower edge of the protective cover 15. The coupling rim may be in the shape of a circular band surrounding the edge of the protective cover 15, and the coupling rim is coupled to the upper end of the vertical member by a fixing means such as a bolt, so that the protective cover 15 is stably fixed. Can be. The protective cover 15 functions as a roof of the exhaust filter 13 and allows the filtered air discharged through the exhaust filter 13 to be stably discharged in the horizontal direction OUT.

The protective cover 15 may be made in various structures and is not limited to the presented embodiment.

Referring to FIG. 2, a plurality of filters having different characteristics may be disposed along the height of the filter housing 11. For example, a bag filter 21 in order inside the filter housing 11; A polyester filter 22 comprising a polyester web; Capture filter 23; And a first HEPA filter 24 may be disposed. In addition, a driving means 26 such as a BLDC motor may be disposed above the filter housing 11, and a fixing cap 12 may be coupled above the filter housing 11. A second HEPA filter 25 may be disposed on the fixed cap 12, and air introduced through the inlet 14 may be discharged through the second HEPA filter 25. External air introduced into the filter housing 11 introduced through a suction tube connected to the inlet 14 may be introduced into the bag filter 21. The bag filter 21 may be made of, for example, polyester, polypropylene, nylon, fluoropolymer, or a mixture thereof, and particles having an average diameter of 1 to 200 μm may be collected. Air from which particles have been primarily removed through the bag filter 21 may be introduced into the polyester filter 22. The polyester filter 22 may be a nonwoven filter, and may have a function of selectively removing harmful components contained in the air. The polyester filter 22 may have a nominal pore size of 1 to 100 μm, for example, and may be made such that the maximum allowable differential pressure is 0.3 to 0.8 Mpa at 25° C., but is not limited thereto. Optionally, the polyester filter 22 may be surface-coated by acrylic, and the polyester filter 22 may be prevented from being deformed by acrylic coating, and the insulation of the polyester filter 22 may be improved, thereby reducing thermal conductivity. have. External air that has passed through the polyester filter 22 may be introduced into the capture filter 23. The capture filter 23 may have a structure of an impact filter, and the movement speed of air may be controlled while oil or similar components contained in the air are removed by the capture filter 23. For example, the capture filter 23 may have a structure capable of changing a flow path of air while having a mesh structure or a flow hole structure, but is not limited thereto. As the flow path of air is changed by the capture filter 23, the flow rate of air may be adjusted. Air filtered by the capture filter 23 may be introduced into the first HEPA filter 24 to be filtered, and the first HEPA filter 24 may have a disk shape as a whole. Fine dust including bacteria having an average diameter of, for example, 0.3 µm may be removed by the first HEPA filter 24. The driving means 26 may be disposed above the first HEPA filter 24, and the driving means 26 may be, for example, a BLDC motor. Compared to other types of motors, the BLDC motor prevents the generation of fine particles due to friction or similar causes in other components, including brushes. The driving means 26 may be disposed on the upper portion of the filter housing 11, and the fixing cap 12 may be coupled to the upper portion of the filter housing 11. In addition, the second HEPA filter 25 may be coupled to the fixing cap 12 or an ULPA (Ultra-Low Penetration Air) filter may be coupled. The second HEPA filter 25 or the ULPA filter may have a relatively high performance compared to the first HEPA filter 24, for example, 99.99%, preferably 99.999, of fine particles having an average diameter of 0.1 to 0.3 µm. It can have the ability to remove at a level of% or higher. The second HEPA filter 25 or the ULPA filter has a cylindrical shape as a whole, and the upper surface is sealed, and the lower surface may be connected to the first HEPA filter 24 to allow air flow.

The internal state of the filter housing 11 may be detected by the detection unit 27, for example, the internal temperature, pressure or fine particle level of the filter housing 11 may be detected. In addition, detection information may be transmitted to the control module 28, and the control module 28 may analyze the detection information to analyze a situation where filtering is performed inside the filter housing 11. The operation level of the motor may be determined by the motor control unit 261 according to the analysis result of the control module 28. The BLDC motor serving as the driving means 26 may have a structure in which a sensor for detecting the position of the rotor is attached or a sensor is not attached (Senseless). The rotor includes a permanent magnet, and a magnetic detection sensor for detecting a magnetic field generated from the permanent magnet is attached to the rotor to detect the position of the rotor. In addition, the motor control unit 261 may operate the BLDC motor based on the detected position information of the rotor. In addition, the output of the motor may be adjusted according to the internal state information of the filter housing 11 detected by the detection unit 27. The drive means 26 can be arranged in various positions and can be controlled in various ways. And by applying a BLDC motor, it is possible to reduce noise while preventing fine dust from being generated inside. The control of the BLDC motor may be performed in various ways and is not limited to the presented embodiments.

Referring to FIG. 3, the filter housing may include a lower housing 11a having an arrangement space therein, and include a sealed floor 31 and an induction hole 32 formed in the sealed floor 31 at a lower portion. I can. The bag filter 21 may be disposed in the arrangement space of the lower housing 11a, and the edge of the bag filter 21 is on the upper circumferential surface of the lower housing 11a by a sealing ring 35 having elasticity or elasticity. Can be fixed. The sealing ring 35 may be made to surround the upper edge of the lower housing 11a. Optionally, the polyester filter can be secured to the upper rim of the lower housing 11a by means of the sealing ring 35, and the bag filter can be secured to the underside of the polyester filter in an appropriate manner. The bag filter 21 or the polyester filter fixed to the lower housing 11a may be prevented from being deformed in shape of the air moved upward by the fixing body 34. The fixture 34 may be made of stainless steel or a material having a similar high density while being made in a hemispherical shape by a plurality of linear members. The fixed body 34 may be made of various structures having a circular contact surface while having mobility, and is not limited to the presented embodiment. The fixing body 34 may be made of various structures such that the bag filter 21 or the polyester filter is stably fixed in a state in which air flows upward, and is not limited to the presented embodiment. The inner surface 33 of the lower housing 11a may be formed in a shape that gradually increases in cross-sectional area while extending in an upward direction, thereby stably flowing air from the bag filter to the second HEPA filter. The lower housing 11a may be made of various structures in which air flow can be stably made, and is not limited to the exemplary embodiments presented.

4 and 5, two different filters may be connected to each other by an induction casing 43, and the induction casing 43 may have a function of stably flowing air between different filters. For example, the capture filter 23 and the first HEPA filter 24 may be connected to each other by an induction casing 43, and the induction casing 43 may have a cylindrical shape with a closed circumferential surface. For example, the capture filter 23 may be fixed to one side of the induction casing 43, and the first HEPA filter 24 may be coupled to the other side of the induction casing 43 so as to face the capture filter 23. . Accordingly, the air that has passed through the polyester filter is introduced into the trapping filter 23 and is guided along the inside of the induction casing 43 to be filtered while passing through the first HEPA filter 24 to pass through the induction cap 42 It can be induced with a second HEPA filter. Induction cap 42 is a disc-shaped limit plate 421; A coupling block 422 protruding in a cylindrical shape so as to be coupled to the induction casing 43 based on the center of the limit plate 421; A flow hole 423 formed in the center of the coupling block 422; And a sealing rim 424 formed along a circular circumferential surface of the limit plate 421. The limiting plate 421 has a function of preventing the air in the lower portion of the filter housing from flowing upward while partitioning the upper and lower portions of the filter housing. An induction casing in which the first HEPA filter 24 is fixed while having airtightness by a sealing bracket 41, which may be a cylinder shape having a diameter coupled to one portion of the coupling block 422 and the induction casing 43 Can be combined in (43). The sealing bracket 41 includes a belt-shaped tightening unit 411 wound along the outer circumferential surface of the induction casing 43; A pair of fixing

tabs

413a and 413b formed at both ends of the tightening unit 411; A tightening bolt 414 that is tightened while connecting the facing fixing

tabs

413a and 413b; And it may include a sealing control unit 412 in the shape of a belt formed inside the tightening unit 411 and one part is open. The coupling block 422 may be coupled to the inner surface of the sealing control unit 412, and is tightened by the tightening unit 411 by the tightening bolt 414, and the induction cap 42 and the induction casing 43 ) Can be combined. The tightening unit 411 and the sealing adjustment unit 412 may have one edge of each other connected to each other so that the cross-section is U-shaped. In a state in which the induction cap 42 and the induction casing 43 are coupled to each other by the sealing bracket 41, the upper surface of the first HEPA filter 24 and the coupling block 42 may be separated from each other by a predetermined interval. As a result, air that has passed through the first HEPA filter 24 may flow through the flow hole 423 to be guided to the second HEPA filter.

The two different filters may be connected to each other in various ways and are not limited to the presented embodiment.

The present invention has been described in detail above with reference to the presented embodiments, but those of ordinary skill in this field will be able to make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modifications and variations of the invention, but is limited by the claims appended below.

Claims

A filter housing 11 having an accommodation space formed therein;

A fixing cap 12 formed above the filter housing 11;

An exhaust filter 13 coupled to the fixing means 12;

An inlet 14 formed under the filter housing 11 to introduce external air;

A protective cover 15 formed above the exhaust filter 13 to guide air discharged to the exhaust filter 13 to the side; And

It is disposed inside the filter housing 11 and includes a drive unit for introducing external air to the inlet,

Cleaner for removing industrial fine dust, characterized in that at least one polyester filter and a HEPA filter are disposed in the filter housing 11.
The method according to claim 1, wherein the drive unit 26 is a BLDC motor (Brushless DC Motor), and industrial fine dust further comprising a trapping filter 23 disposed between the polyester filter 22 and the HEPA filter 24 Cleaner for removal.
The vacuum cleaner for removing industrial fine dust according to claim 2, wherein the trapping filter 23 and the HEPA filter 24 are integrated while being disposed on the upper and lower surfaces of the cylinder shape.