KR102382831B1 - A deodorant dust collector for laser processing - Google Patents

Abstract

Disclosed is a deodorizing dust collector capable of effectively removing various harmful substances and odor components of laser smoke generated during material processing using a laser, and which prevents unpurified smoke from being generated due to smoke leakage. The present invention is a housing having an inlet through which the laser smoke generated in the laser processing apparatus is introduced and provided at the upper end, and an exhaust port through which the inhaled laser smoke is filtered and discharged; a bag filter having an inner frame and an outer frame, wherein the outer frame is seated on a first hooking portion protruding from an upper inner side of the housing; and a composite filter module having an outer surface corresponding to the inner surface of the housing, and having a lower end seated on a second locking portion protruding inside the middle portion of the housing, wherein the filtrate passing through the bag filter continuously passes The activated carbon filter is provided with a HEPA filter and an activated carbon filter, wherein the HEPA filter is seated on a third stopping part protruding inside the middle part, and a first perforation net is mounted on a fourth stopping part protruding inside the lower end part, so that the activated carbon filter is It provides a deodorizing dust collector for laser processing comprising; a composite filter module filled between the HEPA filter and the first perforated network.

Description

A deodorant dust collector for laser processing

The present invention relates to a dust collector for laser processing, and more particularly, to a dust collector for filtering vapors generated during laser processing.

A laser beam is a monochromatic light with very high density and can be made into a beam with excellent parallelism by using an appropriate optical system or can be narrowed down to a wavelength of light. , speed measurement, laser communication, laser recording, display device, laser medical treatment, etc., are used in a wide range of industrial fields. In addition, it is used as a technology to process the surface of an object by converting the energy of a laser beam into thermal energy. , metals, etc. are not limited to the material, and the range of applications is expanding in the accessories and fancy fields.

A side effect of material processing using such a laser is the generation of harmful substances in the air. The generation of hazardous substances is due to thermal decomposition and oxidation caused by strong thermal effects at the laser processing point. Mixtures of hazardous substances form so-called laser smoke in the form of dust, suspended solids, aerosols and gases. The amount and composition of laser smoke varies with each treatment process, but laser smoke is primarily a hazardous substance.

Therefore, there is a need to install a dust collector to extract and remove these laser fumes to keep the air fresh in the workshop and to ensure the laser processing quality.

1 is a perspective view showing a conventional dust collector for laser processing.

Referring to Figure 1, the conventional laser processing dust collector 10 is provided with a plurality of filter cartridges 11, the filtered air after filtering the filter 11 surface is discharged through the ventilation device 12, compressed air 13 backwashing The dust separated through the dust collection container 14 is collected, but it is difficult to effectively remove the laser smoke composed of various materials only with the plurality of filter cartridges 11, and the housing 15 and the filter cartridge 11 Laser smoke may leak through cracks, etc., and smoke that is not actually purified may be emitted.

[Prior Patent Literature]

- Korean Patent Publication No. 2017-0133931 (2017.12.06.)

The present invention is a deodorizing dust collector that can effectively remove various harmful substances and odor components of laser smoke generated during material processing using a laser. do.

In order to solve the above problems, the present invention provides a housing having an inlet through which laser smoke generated from a laser processing apparatus is introduced and provided at an upper end, and an exhaust port through which the inhaled laser smoke is filtered and discharged; a bag filter having an inner frame and an outer frame, wherein the outer frame is seated on a first hooking portion protruding from an upper inner side of the housing; and a composite filter module having an outer surface corresponding to the inner surface of the housing, and having a lower end seated on a second locking portion protruding inside the middle portion of the housing, wherein the filtrate passing through the bag filter continuously passes The activated carbon filter is provided with a HEPA filter and an activated carbon filter, wherein the HEPA filter is seated on a third stopping part protruding inside the middle part, and a first perforation net is mounted on a fourth stopping part protruding inside the lower end part, so that the activated carbon filter is It provides a deodorizing dust collector for laser processing comprising; a composite filter module filled between the HEPA filter and the first perforated network.

It also provides a deodorizing dust collector for laser processing, characterized in that a second perforation net is seated on the third locking part, and the HEPA filter is provided on the second perforated net.

In addition, the composite filter module provides a deodorizing dust collector for laser processing, characterized in that a fixing bar connected to the inside is formed around the upper periphery of the HEPA filter.

In addition, the composite filter module provides a deodorizing dust collector for laser processing, characterized in that the material is wood.

In addition, the wood provides a deodorizing dust collector for laser processing, characterized in that the medium-density fiberboard (medium density fiberboard; MDF).

In addition, it provides a deodorizing dust collector for laser processing, characterized in that a portion in contact with the composite filter module and the HEPA filter is impregnated with a curable polyurethane solution and cured.

In addition, it provides a deodorizing dust collector for laser processing, characterized in that the gasket is attached to the lower end that is seated on the second locking part.

According to the present invention, as a dust collector for removing various harmful substances of laser smoke generated during material processing using a laser, the laser smoke passes through a bag filter, a HEPA filter, and an activated carbon filter in order, so that harmful substances are combined with a simple filter and odor components can be effectively removed, and the HEPA filter and the activated carbon filter are modularized so that all filtrates that have passed through the HEPA filter pass through the activated carbon filter, so that unpurified smoke does not occur due to smoke leakage. there is.

In addition, the material of the composite filter module is made of wood, and the part in contact with the module and the HEPA filter is impregnated and cured with a curable polyurethane solution. can

1 is a perspective view showing a conventional dust collector for laser processing;
2 is a perspective view showing the appearance of a dust collector for laser processing according to an embodiment of the present invention;
3 is an internal cross-sectional view of a dust collector for laser processing according to an embodiment of the present invention;
4 is a perspective view showing a composite filter module provided with a handle according to an embodiment of the present invention;
5 is a perspective view showing a state in which a gasket is attached to the lower end of the composite filter module according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are given to similar parts throughout the specification, and the direction of the detailed configuration shown in the dust collector will be described with reference to the drawings. . Also, throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Figure 2 is a perspective view showing the exterior of the dust collector for laser processing according to an embodiment of the present invention, Figure 3 is an internal cross-sectional view of the dust collector for laser processing according to an embodiment of the present invention.

2 and 3, the deodorizing dust collector 100 for laser processing according to an embodiment of the present invention is provided with a housing 110, a bag filter 120, a HEPA filter 131 and an activated carbon filter 132. and a composite filter module 130 .

The housing 110 serves to seal the laser smoke from leaking to the outside while mounting the filters serving as a substantial filtration of the dust collector 100 for laser processing of the present invention inside, and laser smoke generated from the laser processing device. A suction port 111 through which is introduced is provided at the upper end, and an exhaust port 112 through which the inhaled laser smoke is filtered and discharged is provided at the lower end.

In an embodiment of the present invention, the suction port 111 may be formed on the cover 113 of the upper end of the housing 110 .

In addition, in one embodiment of the present invention, the housing 110 may be divided into upper, middle and lower parts and separated and combined into an upper housing 110a, a middle housing 110b and a lower housing 110c, and the upper end The bag filter 120 is provided in the housing 110a, the composite filter module 130 is provided in the middle housing 110b, and the exhaust fan 114 together with the exhaust port 112 in the lower housing 110c. and a driving motor 115 may be provided.

A first engaging portion 116 and a second engaging portion 117 protruding inwardly are formed on the upper portion of the upper housing 110a and the lower portion of the middle housing 110b, respectively, so that the bag filter 120 and the composite filter are formed. The module 130 is seated and a detailed description will be given later.

The inlet 111 may be connected by a tube between the outlets of the laser processing apparatus to become a flow path of laser smoke generated in the laser processing apparatus, for example, and the exhaust port 112 may also be connected by a tube, but the filtered air without a tube connection Of course, it can be discharged as it is.

In the present invention, the filter that plays a substantial filtration role consists of a bag filter 120, a HEPA filter 131, and an activated carbon filter 132 in the order, and only a combination of the three types of filters is a harmful substance of laser smoke generated from a laser processing device. can be completely removed.

The bag filter 120 primarily serves to filter and store coarse dust in the laser smoke. An inner frame 121 and an outer frame 122 are provided, and the inlet of the bag filter 120 is an inner frame. It is a fixed form between (121). A plurality of bag filters 120 may be modularized, for example, in a modular form in which the bag filters 120 are fixed for each of the plurality of inner frames 121 provided between the rectangular outer frames 122 . In the bag filter 120 , the outer frame 122 is seated on the first hooking part 116 in which the outer frame 122 protrudes from the upper inner side of the upper housing 110a.

The first locking part 116 is formed in the form of a bar extending long along the upper inner side of the upper housing 110a, and preferably, all of the first engaging portions 116 are formed inside the upper housing 110a.

The material of the bag filter 120 is not particularly limited as long as it is a material capable of filtering out relatively large particles of laser smoke that is initially introduced, but is preferably a nonwoven material, and more preferably a nonwoven glass microfiber. can be

Since the bag filter 120 is fixed to the inner frame 121 and the outer frame 122 and is seated on the first hooking part 116 of the upper housing 110a, when replacing the filter, the upper part of the upper housing 110a Filter replacement is possible by a simple method of detaching the outer frame 122 after detaching the cover 113 .

The HEPA filter 131 serves to purify the air by filtering ultra-fine particles, organic solvents, harmful smoke, etc. from among the filtrates that have passed through the bag filter 120 , and is located above the complex filter module 130 to be described later. do.

A HEPA filter is a high-performance filter that filters fine particles in the air, and is a filter capable of removing 99.97% or more of particulate matter with a particle diameter of 0.3 μm or more. In the present invention, the bag filter 120 ), it can be installed so that most of the ultra-fine particles, organic solvents, and harmful substances in the laser smoke are sufficiently filtered for the smoke that has a relatively large particle size in the laser smoke.

The HEPA filter 131 is not limited to its shape as long as it satisfies the required filter performance, but has a thickness of 0.5 to 1 mm in terms of particle removal efficiency in laser smoke through maximizing surface area, and forms a layer of a certain height. It is preferable that it has the form folded in a zigzag.

The material of the HEPA filter 131 is not particularly limited, but a filter made of a glass fiber material may be preferably used.

The activated carbon filter 132 serves to filter the filtrate that has passed through the HEPA filter 131 into clean air through deodorization, decolorization and sterilization, and is located below the complex filter module 130 to be described later. .

Activated carbon is a carbonaceous material with strong adsorption. It is an adsorbent that develops micropores of the molecular size through the activation process of burning carbonaceous raw materials such as coconut shells, wood, lignite, and anthracite. It is a powdery or granular porous material with strong adsorption The interior of the furnace has a surface area of about 500 to 1,500 m 2 per 1 g.

Although the form of the activated carbon 132 is crushed, powdered, shaped, fibrous, etc., in the present invention, the filtrate that has undergone primary filtration by the bag filter 120 and secondary filtration by the HEPA filter 131 is targeted Also, in consideration of the reduction in filtration performance and the reduction in filter life due to dispersion of the activated carbon itself by the suction pressure of the lower housing 110c and the motor 115, crushed activated carbon having an irregular shape with a particle size of 5 to 200 mesh is preferred can be used

The activated carbon 132 may be provided by filling the lower portion of the composite filter module 130 having a pre-designed height.

In the present invention, the HEPA filter 131 and the activated carbon filter 132 are provided in the composite filter module 130, installed together, and replaced together after use. This is a result of repeated evaluation of filter performance by allowing the filtrate that has passed through the bag filter 120 to continuously pass through the HEPA filter 131 and the activated carbon filter 132 of the preferred material for laser smoke collection, and as a result, significant filter performance is obtained. It is a configuration derived from the result of confirming that the durability and service life of the HEPA filter 131 and the activated carbon filter 132 are approximately the same as long as they are maintained. In addition, when the HEPA filter 131 and the activated carbon filter 132 are separated and mounted, the bag filter 120 may be caused by a gap between the filter and the housing 110 or between the HEPA filter 131 and the activated carbon filter 132 . ), there was a problem leading to a decrease in filtration performance, such as that the filtrate passed through the HEPA filter 131 was introduced into the activated carbon filter 132, and the composite filter module 130 was derived to solve this problem. is the structure

Therefore, in the present invention, the composite filter module 130 has an outer surface corresponding to the inner surface of the housing 100, and the lower end is seated on the second locking part 117 protruding inside the middle housing 110b. A bag filter 131 and an activated carbon filter 132 are provided inside the module 130 as a form to be used. That is, a HEPA filter 131 and an activated carbon filter 132 through which the filtrate that has passed through the bag filter 120 continuously passes is provided, and the HEPA filter 131 is formed to protrude inside the middle portion of the composite filter module 130 . The first perforation network 135 is seated on the third locking part 133 and on the fourth locking part 134 protruding inside the lower end of the composite filter module 130 so that the activated carbon filter 132 is a HEPA filter. It is filled between the 131 and the first perforation network 135 .

The second locking part 117 is formed in the form of a bar extending long along the lower inner side of the middle housing 110b, and preferably, all of the second locking portions 117 may be formed inside the middle housing 110b.

The third locking part 133 and the fourth locking part 134 are respectively formed in the shape of a bar protruding inside the middle and lower ends of the composite filter module 130 and extending along the inside, respectively, the HEPA filter ( 131) is seated and the first perforation network 135 is seated so that the activated carbon filter 132 is filled.

The first perforation network 135 is preferably a thin plate-shaped mesh material made of a metal material, and is perforated at regular intervals to a size such that the activated carbon cannot pass through, so that purified air can be moved while the activated carbon is filled.

Here, since the activated carbon 132 may pass through the first perforating network 135 depending on the size, the activated carbon 132 may be filled in a state in which the filter paper 136 is placed on the first perforating network 135 .

In an embodiment of the present invention, the second perforation network 137 may be seated on the third locking part 133 , and the HEPA filter 131 may be provided on the second perforation network 137 .

The second perforation network 137 may have the same material and shape as the first perforation network 135 , and when the second perforation network 137 is seated on the third stopping part 133 , the laser smoke dust collection operation is performed. As the HEPA filter 131 and the activated carbon filter 132 are disposed adjacent to each other in the module 130, the activated carbon 132 comes into contact with the HEPA filter 131 located on the upper part by vortex or vibration in a high pressure environment. to prevent deterioration of durability and performance.

In an embodiment of the present invention, in the composite filter module 130 , a fixing bar 138 connected to the inside may be formed around the upper periphery of the HEPA filter 131 .

The fixing bar 138 is provided in a shape in contact with the composite filter module 130 around the upper periphery of the HEPA filter 131, and is fixed inside the composite filter module 130 with, for example, a piece so that the HEPA filter 131 is installed at the same time. to be fixed. Accordingly, it is possible to prevent the smooth filtration from being disturbed by the vibration of the HEPA filter 131, which is a relatively light material, in a high pressure environment during laser smoke collection operation.

On the other hand, when replacing the composite filter module 130, as shown in FIG. 4, a handle 139-1 is provided on the top of the module 130 or the top of the fixing bar 138 so that it can be easily replaced.

In an embodiment of the present invention, the composite filter module 130 may be made of wood, preferably medium density fiberboard (MDF).

The MDF is wood processed by heat and pressure by mixing sawdust and adhesive, and is a plate material that is molded and hot-pressed with a synthetic resin adhesive after extracting fibers by grinding wood. Such MDF has a smooth surface and dense density, so it has excellent workability and is strong, and has the advantage of less shrinkage, distortion, and expansion.

In the present invention, in consideration of the advantages of MDF, wood, preferably MDF, is adopted as the material of the composite filter module 130 to minimize deterioration in durability of the filter module 130, and to facilitate fabrication according to the dust collector standard, thereby improving the degree of freedom in design In addition, it is made particularly suitable for preventing deterioration of filtration performance, which will be described below.

In an embodiment of the present invention, the portion where the composite filter module 130 and the HEPA filter 131 are in contact may be cured by being impregnated with a curable polyurethane solution, and the composite filter module ( 130) By adopting the same wood as MDF, the effect of preventing deterioration of filtration performance is maximized, and the problem of deformation due to moisture, which is a disadvantage of wood materials such as MDF, can also be solved.

That is, despite the fact that the HEPA filter 131 and the activated carbon filter 132 are provided in one module 130 , some of the filtrate passing through the bag filter 120 is located inside the combined filter module 130 and the HEPA filter module 130 . Although it can be introduced into the activated carbon filter 132 through the gap between the filters 131, the curable polyurethane solution has excellent impregnation properties in both the wood and glass fiber HEPA filter 131, so it induces solid curing. Thus, it is possible to maximize the effect of preventing deterioration of filtration performance by completely blocking the inflow of the filtrate through the gap between the composite filter module 130 and the HEPA filter 131 by increasing the airtightness.

In addition, even if there is a possibility that the gap between the composite filter module 130 and the HEPA filter 131 is further widened as a wood material such as MDF is deformed by moisture, the deformation caused by moisture is delayed due to the impregnation and curing of the curable polyurethane solution. can be prevented in

As such, even when the HEPA filter 131 and the activated carbon filter 132 are combined into one module 130 , the filtrate passing through the bag filter 120 flows into the gap between the housing 110 and the composite filter module 130 . it might be In anticipation of this problem, in one embodiment of the present invention, as shown in FIG. 5 , a gasket 139 may be attached to the lower end portion seated on the second locking part 117 .

The gasket 139 is not particularly limited in its material as long as it can block the inflow of gas components, and for example, a gasket made of urethane or silicone material may be used.

The gasket 139 is attached to the lower end of the composite filter module 130 in the form of an elongated bar and is seated on the second locking part 117 so that the filtrate passing through the bag filter 120 is separated from the housing 110 and the housing 110 . It is possible to completely block the possibility of being introduced into the gap between the composite filter modules 130 .

As above, preferred embodiments of the present invention have been described in detail with reference to the drawings. The description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention.

Accordingly, the scope of the present invention is indicated by the claims described below rather than the above detailed description, and all changes or modifications derived from the meaning, scope, and equivalent concept of the claims are included in the scope of the present invention. should be interpreted

100: dust collector for laser processing 110: housing
110a: upper housing 110b: middle housing
110c: lower housing 111: intake port
112: exhaust port 113: cover
114: exhaust fan 115: drive motor
116: first engaging part 117: second engaging part
120: bag filter 121: inner frame
122: outer frame 130: composite filter module
131: HEPA filter 132: activated carbon filter
133: third engaging part 134: fourth engaging part
135: first perforation network 136: filter paper
137: second perforation network 138: fixed bar
139: gasket 139-1: handle

Claims (7)

A housing having an inlet through which laser smoke generated from the laser processing apparatus is introduced is provided at the upper end, and an exhaust port through which the inhaled laser smoke is filtered and discharged;
a bag filter having an inner frame and an outer frame, wherein the outer frame is seated on a first hooking portion protruding from an upper inner side of the housing; and
A composite filter module having an outer surface corresponding to the inner surface of the housing and having a lower end seated on a second locking portion protruding inside the middle portion of the housing, wherein the filtrate that has passed through the bag filter is continuously passed A HEPA filter and an activated carbon filter are provided, the HEPA filter is mounted on a third stopping part protruding inside the middle part, and a first perforation net is mounted on the fourth stopping part protruding inside the lower end, so that the activated carbon filter is a composite filter module filled between the HEPA filter and the first perforated network;
It is a deodorizing dust collector for laser processing comprising a,
The housing is divided into upper, middle, and lower portions and is separated and combined into an upper housing, a middle housing and a lower housing, and is separated and combined by a coupling device installed on the outer surface between the upper housing, the middle housing and the lower housing, , The upper housing is provided with the bag filter, the middle housing is provided with the composite filter module, and the lower housing is provided with an exhaust fan and a driving motor together with the exhaust port. The method of claim 1,
A deodorizing dust collector for laser processing, characterized in that a second perforation net is seated on the third locking part, and the HEPA filter is provided on the second perforation net. According to claim 1,
The composite filter module is a deodorizing dust collector for laser processing, characterized in that a fixing bar connected to the inside is formed around the upper periphery of the HEPA filter. According to claim 1,
The composite filter module is a deodorizing dust collector for laser processing, characterized in that the material is wood. 5. The method of claim 4,
The wood is a deodorizing dust collector for laser processing, characterized in that medium density fiberboard (MDF). 5. The method of claim 4,
A deodorizing dust collector for laser processing, characterized in that a portion where the composite filter module and the HEPA filter are in contact is impregnated with a curable polyurethane solution and cured. 5. The method of claim 4,
Deodorizing dust collector for laser processing, characterized in that a gasket is attached to the lower end seated on the second locking part.

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