KR20060116770A - Clean bench - Google Patents

Abstract

A clean bench able to remove particulate dust and sterilize air is provided to improve air purification processing efficiency and to exclude external contamination source from hands and/or cloths of bench worker. The clean bench able to remove particulate dust and sterilize air includes: a main body(110), which purifies air flowed into the bench through air inlet and discharges the purified air into working space of the bench; at least more than one filer(132,133) established in an air ventilation pipe between air inlet and the working space of bench; a photo catalyst member(143) established in the air ventilation pipe; a silver coated member(146); and a UV lamp irradiating UV light on the photo catalyst member(143).

Description

Clean bench

1 is a perspective view showing the appearance of a clean bench according to a first embodiment of the present invention,

2 is a schematic cross-sectional view of FIG. 1,

3 is a cross-sectional view showing a clean bench according to a second embodiment of the present invention,

4 is an enlarged perspective view showing a partially extracted hand insertion coating portion of Figure 3,

5 is a perspective view showing a hand insertion coating portion according to another embodiment of the present invention,

6 is a cross-sectional view illustrating a clean bench according to a third embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

110: main body 113: workspace

114: work bench 120: blower

141: ultraviolet lamp 143: photocatalyst member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean bench, and more particularly, to a clean bench having an improved contaminant treatment capability.

The clean bench is formed to perform work in a clean environment by suppressing the inflow of fine dust.

The mini clean bench disclosed in Korean registered utility model No. 20-0352345 is equipped with a filter that can remove fine dust contained in the air between the air inlet and the air outlet.

In addition, Korean Patent Laid-Open Publication No. 2001-0057478 discloses a clean bench having a structure in which corner portions of the work space are rounded so as to suppress the generation of vortices in the work space.

However, the conventional clean bench has a disadvantage in that it is possible to remove only fine dust contained in the air, and thus does not provide the desired air cleanliness in a preparation room or a laboratory requiring cultivation in a sterile state.

The present invention was devised to improve the above problems, and an object thereof is to provide a clean bench which can perform sterilization treatment of air in addition to removing fine dust in the air.

In order to achieve the above object, the clean bench according to the present invention is a clean bench formed to purify the air introduced through the air inlet and discharged into the work space formed in the main body, the air leading from the air inlet into the work space. A photocatalyst member installed in contact with air on a distribution path and coated with a photocatalytic material;

And an ultraviolet lamp installed to irradiate ultraviolet light to the photocatalyst member.

More preferably, a silver coating member coated with silver nanoparticles on the air inflow path leading to the air inlet and the working space;

In addition, the work space is formed so as to close the outside and at least a portion is further provided with a transparent curtain formed of a soft synthetic resin material that can be seen inside, the transparent curtain can enter the working space to freely manipulate the hand And a hand insertion coating portion formed to coat at least a portion of the arm.

According to another aspect of the invention, the roll curtain is provided on the main body to be opened and closed to the outside by the withdrawal of the curtain curtain;

Hereinafter, a clean bench according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in more detail.

1 is a perspective view showing the appearance of a clean bench according to a first embodiment of the present invention, Figure 2 is a schematic cross-sectional view of FIG.

1 and 2, the clean bench 100 includes a main body 110, a blower 120, a first filter 132, a second filter 133, an ultraviolet lamp 141, and a photocatalyst member 143. And a silver coating member 146. In the drawings it is indicated by an arrow to easily understand the flow of air through the clean bench (100).

The main body 110 is formed in a structure having a work space 113, a flow path chamber 112, and an article storage chamber 151.

The working space 113 of the main body 110 is surrounded by the lower work table 114 and the upper ceiling plate 116 and the side plate, and has a structure in which the front surface is opened and a predetermined space therein.

The article storage chamber 151 is formed to be opened and closed by the door 152 between the workspace 113 and the wall of the passage chamber 112 of the main body 110.

In the flow path chamber 112, air introduced through the air inlet 131a below the main body 110 may discharge air downward through the outlet 117 of the upper portion of the work space 113, that is, the top of the ceiling plate 116. It is formed in a structure having an air flow path so that.

The flow path chamber 112 is divided into a vertical flow path portion 112a extending vertically from the air inlet 131a and a top surface of the vertical flow path portion 112a, which extends in parallel with the work space 113 to form a ceiling plate 116. And an upper portion 112b extending downward.

Air introduced through the air inlet 131a of the flow path chamber 112 passes through the vertical flow path portion 112a and the upper flow path portion 112b in the direction indicated by the arrow, and then discharges the discharge hole 117 of the ceiling plate 116. It is discharged into the working space 113 through.

A plurality of through holes 115 are formed in the work table 114.

In the illustrated example, the air passing through the through hole 115 of the work bench 114 is formed to re-enter into the flow path chamber 112. Unlike the illustrated example, the through hole 115 and the flow chamber of the work table 114 are shown. Of course, the 112 may be formed to block each other so that air passing through the through hole 115 of the work bench 114 may be discharged to the outside.

Under the flow path chamber 112, a protection net 131 having a plurality of air inlets 131a and a first filter 132 are sequentially installed.

The first filter 132 is commonly referred to as a pre-filter, and is installed at the tip of the air inlet 131a, and various known materials for filtering contaminants having a relatively large particle size are applied. For example, the first filter 132 may be a sponge material, a nonwoven fabric, a paper material. The pass limit size of the first filter 132 may be appropriately applied depending on the environment to be used.

As an example, the first filter 132 may be applied to remove contaminants having a particle diameter of several tens to several hundred micrometers or more.

The blower 120 is installed to blow the air introduced through the air inlet 131a upward. As shown in the drawing, when the air is to be discharged in a direction intersecting at a predetermined angle with respect to the entry direction of the air introduced through the air inlet 131a, the blower 120 converts the sucked air in a different direction to discharge the air. Apply a sirocco fan, if possible. In contrast, when it is not necessary to switch the blowing direction, a conventional fan may be applied.

Reference numeral 118 is installed in the upper portion of the main body of the flow path chamber 112 so that the air inside the flow path chamber 112 can be partially discharged to the outside to guide the flow of air inside the flow path chamber 112 upward. Auxiliary discharge outlet

The second filter 133 is installed in the upper flow path portion 112a between the ceiling plate 116 and the upper part of the main body so as to filter again the fine dust passing through the first filter 132.

As for the passage limit size of the second filter 133, the smaller one than the first filter 132 is applied.

As the second filter 133, a hepa filter or an ultra filter is preferably applied.

As a material of the second filter 133, a porous synthetic resin such as polypropylene and polyethylene may be applied. What is necessary is just to apply the 2nd filter 133 which has a suitable pass limit size according to the environment to be used. As an example, the second filter 133 may have a particle diameter capable of removing tens of micrometers or several micrometers of contaminants.

An ultraviolet lamp 141, a photocatalyst member 143, and a silver coating member 146 are installed between the second filter 133 and the ceiling plate 116.

The space between the photocatalyst member 143 and the ceiling plate 116 becomes the photocatalytic reaction chamber 145.

The photocatalyst member 143 has a plurality of through holes and a plate-like structure coated with a photocatalytic material on the surface thereof.

When the photocatalyst member 143 is formed to have a through hole with various materials such as glass, aluminum, stainless steel, tin, and the like, a ceramic material, a synthetic resin, and the like, it is formed by applying an ultraviolet reaction material so that the through hole is not closed on the surface. do.

The photocatalyst material encoded on the surface of the photocatalyst member 143 may be titanium dioxide (TiO ₂ ) or a mixture of other elements added to titanium dioxide.

As an example of a material added to titanium dioxide, at least one or more of platinum, palladium, gold, silver, and tungsten may be applied.

Unlike the illustrated example, the photocatalyst member coats the photocatalyst material on the inside of the photocatalyst layer or tubular pipe (not shown) formed by coating the photocatalyst material on the wall surface of the air distribution path of the main body 110 and the tubular pipe is coated. Of course, it can be applied in various ways, such as a structure installed in the main body so that the air to be treated passes.

The silver coating member 146 is applied to further increase the sterilization capacity of the air and was formed by coating silver nanoparticles on the inner wall of the photocatalytic reaction chamber 145, that is, the surface of the ceiling layer 116 and the inner wall of the body.

The silver coating member is not limited to the illustrated example, and the silver nanoparticles are coated on the members that are in contact with air on the air flow path leading from the flow path 112 of the main body 110 to the work space 113. Of course it can be implemented. That is, to prevent the flow of air to the inner wall of the passage chamber 112 of the main body, the filters 132 and 143, the inner surface of the work space 113, and the inner surface of the transparent curtain (see FIG. 3: 210) to be described later. Of course, the silver nanoparticles can be coated.

Alternatively, a silver coating member having a structure in which a silver coating plate or a chamber coated with silver nanoparticles on a surface of a porous substrate or a separate air distribution chamber may be applied to allow air to pass through the air distribution path. .

The ultraviolet lamp 141 is a lamp that emits ultraviolet light having a germicidal wavelength, and a lamp that emits light having a wavelength of 430 nanometers or less is generally applied.

In the clean bench 100 having such a structure, the air purified through the passage chamber 112 is discharged into the work space 113 through the discharge port 117 of the ceiling plate 116, and flows in through the lower portion of the work table 114. It flows back into the chamber 112.

Although not shown, various known filters, such as activated carbon fiber filters, which may remove contaminants by adsorption on the air flow path in the passage chamber 112 may be further added.

In addition, although not shown, the negative ion generator may be further installed in the passage chamber 112.

The anion generator generates negative ions and a small amount of ozone to sterilize bacteria and various pathogens contained in the inflowing air, and also promotes decomposition and ionization of harmful air by powerful oxidizing power. It can serve to increase the purification reaction efficiency in the).

The structure of the anion generator is variously known. The structure of a conventional anion generator includes a plurality of opposing ion discharge needles having a structure in which charge is easily generated, and a high pressure applying device for applying a high voltage to the ion discharge needles. Such anion generator ionizes the air passing through the ion discharge needle and converts it into air having negative ions. In this process, the anion generator also generates a small amount of ozone.

Hereinafter, the operation of the clean bench 100 will be described in more detail below.

The air introduced through the air inlet 131a of the main body 110 passes through the first filter 132, and contaminants having a large particle size are filtered out, and then, the air is blown upward by the blower 120, and then the second filter ( 133), contaminants having a smaller particle size are filtered out. The air passing through the second filter 133 is a large amount of hydroxide generated by combining a large amount of electrons and holes generated from the reaction of the ultraviolet rays irradiated from the ultraviolet lamp 141 and the titanium dioxide coated on the surface of the photocatalyst member 143. Radicals remove pathogens and odors. In addition, the air that has passed through the photocatalyst member 143 is subsequently sterilized and deodorized by the silver coating member 146, and introduced into the workspace 113 and then through the through hole 115 of the work bench 114. Flows back to 112.

On the other hand, while the interior of the workspace 113 can be opened and closed with the outside while the clean bench structure of the structure that can easily perform the work in the workspace 113 from the outside of the workspace 113 is shown in FIGS. Is shown. Elements having the same function as in the above-described drawings are denoted by the same reference numerals.

First, referring to FIGS. 3 and 4, the clean bench 200 is further provided with a transparent curtain 210 capable of closing the front of the workspace 113.

The transparent curtain 210 is preferably coupled to the front and rear of the main body 110 so as to open the front of the working space 113 of the main body 110 as needed.

In another alternative, the transparent curtain 210 may be fixedly coupled to the main body 110, and a door (not shown) may be installed to open and close the inside of the working space at a side portion of the working space 113 of the main body 110. Of course.

At least a part of the transparent curtain 210 is formed to be transparent to the inside, and is preferably formed of a soft transparent synthetic resin material.

In addition, the transparent curtain 210 has a structure having a hand-insertable coating portion 211 so that an operator can easily perform work by using the hand in the work space 113 in a state coated on the transparent curtain 210. have.

The hand insertion coating portion 211 is provided with a hand insertion portion 211b having a closed structure having a shape corresponding to the hand at the end by extending a predetermined length from the wrinkle portion 211a and the wrinkle portion 211a to easily stretch and extend the length. .

Of course, the hand insertion coating portion 211 may be formed of four or more so that several people can work together.

The transparent curtain 210 of such a structure inserts an object into the work space 113 and then closes the transparent curtain 210, and then inserts both arms through the insertion hole 211c of the hand insertion coating portion 211. You can do it.

Unlike the illustrated example, as shown in FIG. 5, the penetrating structure in which the hand insertion coating portion 211 can wrap only part of the arm, that is, the wrist portion, may be applied. Reference numeral 211c is a wristband formed of an elastic material to seal the wrist part.

On the other hand, the roll curtain 310 as shown in Figure 6 may be applied as another structure that can open and close the work space 113.

The roll curtain 310 has a winder 311 and a curtain 312 wound to be withdrawn from the winder 311. The structure of such a roll curtain 310 is variously known, so a detailed description thereof will be omitted.

Reference numeral 315 is a hook provided on the main body to insert the engaging ring 313 formed at the end of the curtain 312 of the roll curtain 310.

This curtain opening and closing structure provides an advantage that can be used as a work room when you want to work that does not require a clean state.

As described above, according to the clean bench according to the present invention, in addition to fine dust, the air can be sterilized to increase the efficiency of air purification, as well as to block external pollutants from workers' hands and clothes. To provide.

Claims (1)

In the clean bench formed to purify the air introduced through the air inlet and discharge into the working space formed in the main body, The main body is provided with a flow path compartment partitioned from the work space, and the work space purges the air introduced through the air inlet by a blower and a filter provided in the flow path chamber, and a discharge port formed in the ceiling plate above the work space. Through it is to be discharged into the working space, A photocatalytic reaction chamber is further provided between the flow path chamber and the ceiling plate above the workspace. A photocatalyst member having a plurality of through holes in the photocatalytic reaction chamber and coated with a photocatalyst material; An ultraviolet lamp installed in the photocatalytic reaction chamber to irradiate ultraviolet light to the photocatalyst member; And a transparent curtain formed of a soft synthetic resin material which is formed to close the working space from the outside and at least a part of which can be seen inside. And the transparent curtain is provided with a hand insertion coating portion formed to coat at least a part of the arm so as to enter the working space and freely manipulate the hand.

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