HEPA FILTER BOX PREVENTING EDDY AT BOTTOM BORDER OF HEPA FILTER

摘要

The present invention relates to a HEPA filter box, and more particularly, to a HEPA filter box which is connected to an air conditioner by a duct and installed in a clean room and has a HEPA filter therein so as to supply filtered air to a clean room, An air inlet tube is attached to an upper portion of the main body, and a lower portion of the main body is provided with a casing having an opened first opening; a casing having a plurality of narrow and long plate members bent inwardly, A first nut is attached to the lower surface of the inner horizontal bending portion and the attachment surface of the main body is welded to the channel type bracket which is welded along the inner peripheral surface of the lower end of the casing body, A rectangular tube body inserted into the lower first opening of the casing, and a HEPA filter housed therein, Type bracket is formed in a channel shape in which an inner downward bending portion of the channel type bracket can be partially inserted into a top portion thereof and a bottom portion of the filter bracket is formed with a first exposed hole for exposing the HAP filter therein, And a bolt hole formed at a position corresponding to the first nut of the channel-type bracket, the gel-receiving-portion fixture being inserted into the casing from a lower side of the filter frame to a lower end of the gel- Type bracket, and a bolt hole is formed at a position corresponding to the first nut of the channel-type bracket, and a HEPA filter coincides with the first exposed portion of the HEPA filter of the filter frame, 2 filter frame fixture in which the HEPA filter is exposed downward through the second exposed aperture of the HEPA filter And a portion of the upper portion fastened to the first nut and not fastened to the first nut passes through the bolt hole of the gel receiving portion fixing frame and the bolt hole of the filter frame fixing frame and extends to the lower portion of the casing and the filter frame fixing portion, A second nut which is screwed to the tongue bolt at a lower portion of the gel receiving portion fixing frame to closely fix the gel receiving portion fixing frame to the lower surface of the gel receiving portion of the casing; Wherein the filter frame is fixed to the bracket and the lower end of the filter frame so that the HEPA filter in the filter frame is exposed to the outside through the HEPA filter first fixture of the filter frame and the HEPA filter second fixture of the filter frame fixture, And a third nut screwed to the lower portion of the filter frame fixing frame of the bolt.