JP2005324107A - Deodorization apparatus, deodorization filter and deodorization method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance a removal function of bad odor in a kitchen exhaust gas sufficiently increasing a contact area in a plane direction of the exhaust gas from the kitchen mainly and a deodorization filter and facilitating washing and replacement of the deodorization filter. <P>SOLUTION: A closed box type deodorization machine is installed on an outdoor side end of a route D for leading the exhaust gas containing the odor from the kitchen or the like from the indoor side to the outdoor side and discharging it. The exhaust gas is led to the inside of the deodorization body 1, is passed through a porous filter plate 3 having a deodorization function and detachably provided on a wall part of the deodorization machine body 1 and is discharged outside of the deodorization machine body 1. Thereby, deodorization is performed and the exhaust gas is discharged outdoor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention mainly relates to a deodorizing device for malodor contained in exhaust discharged to the outdoors from commercial kitchens such as restaurants and hotels, a deodorizing filter used in the deodorizing device, and a deodorizing method using the deodorizing device or deodorizing filter. It is about.

  In recent years, offensive odors contained in exhaust air exhausted in large quantities from commercial kitchens such as restaurants through ducts and the like have been cited as one of the causes of urban odor pollution.

In order to remove such bad odors, for example, a kitchen exhaust deodorization apparatus shown in Patent Document 1 below has been proposed. The deodorizing apparatus for kitchen exhaust in Patent Document 1 has a basic structure in which a deodorizing filter is interposed in the middle of an exhaust duct guided from a kitchen range hood.
JP 2001-218823 A

  However, in such a conventional deodorizing device, the area of the front surface of the deodorizing filter is limited to the area of the inner diameter of the exhaust duct, and there is a limit to the contact area between the exhaust and the deodorizing filter. The same applies to the case where a deodorizing filter is provided. In order to cope with such a limit, it is conceivable to increase the thickness of the porous deodorizing filter, but there are problems that clogging is likely to occur and maintenance inspection is troublesome. Further, in the conventional deodorizing apparatus, pressure loss occurs with respect to the exhaust pressure, and not only the problem of exhaust suction failure occurs, but also when the exhaust pressure is increased to solve the problem of suction failure, exhaust and deodorizing filters The contact time becomes shorter, and it becomes difficult to achieve the purpose of deodorization.

  The present invention solves the above-mentioned problems, and the object of the present invention is to effectively use a relatively low exhaust pressure mainly by sufficiently increasing the contact area in the surface direction between the exhaust from the kitchen and the deodorizing filter. A deodorizing device that improves the function of removing bad odors in kitchen exhaust, the deodorizing filter used in the deodorizing device, and the deodorizing device or deodorizing filter. It is in providing the deodorizing method used.

  In order to achieve the above object, the deodorizing apparatus of the present invention, as shown in the embodiment of the figure, leads to the outdoor side end of the path (exhaust duct D) for exhausting exhaust gas containing odor from the indoor side to the outdoor side. The deodorizer main body 1 is installed in a section and allows the exhaust to be introduced into the interior. One or a plurality of discharge ports 2 are formed in the wall of the deodorizer main body 1, and the discharge ports 2, a porous filter plate 3 having a deodorizing function is detachably provided, and exhaust gas introduced into the inside of the deodorizer body 1 is discharged to the outside of the deodorizer body 1 through the filter plate 3. It is a feature.

  By adopting such a configuration, the exhaust gas having bad odor introduced from the exhaust duct D into the deodorizer body 1 is provided in the window-shaped outlet 2 of the wall in a state of being diffused in the deodorizer body 1. It is discharged to the outside through a porous filter plate 3. For this reason, the area in the surface direction of the filter plate 3 is not limited to the inner diameter of the exhaust duct D, and the contact area between the exhaust gas and the filter plate, that is, the contact area per unit time between the malodorous component and the deodorizer may be increased. This improves the efficiency of capturing bad odors. Furthermore, the conventional pressure loss problem is solved, and the relatively low exhaust pressure enables efficient deodorization in a short time, and the problem of poor suction is also solved. Further, since the filter plate 3 is detachably provided in the discharge port 2 of the wall portion of the deodorizing machine body 1, maintenance work such as replacement cleaning is easy, and the clogged state can be easily determined visually. can do.

  The deodorizer body 1 has a hermetic box shape, and an exhaust duct D is connected to an upper or lower wall portion, and a polygonal peripheral wall has a window shape on each of the polygonal flat walls. A discharge port 2 is formed, and each discharge port 2 is provided with a porous filter plate 3 having a deodorizing function in a detachable manner.

  By adopting such a configuration, a plurality of filter plates 3 can be provided by dividing them into polygonal flat walls, the contact area between the exhaust gas and the filter plate is further increased, and the filter plate 3 is in contact with the exhaust gas. The surface area also increases. In addition, the size of one filter plate 3 can be reduced, and operations such as replacement and cleaning are facilitated.

  The deodorizing machine main body 1 of the present invention can be provided with not only one filter plate 3 but also two or four filter plates 3 on each polygonal flat wall. In this way, the filter plate 3 is divided into small parts and arranged side by side, so that the filter plate 3 can be replaced or cleaned more easily. Further, the discharge port 2 and the filter plate 3 may be provided on the upper or lower wall (top plate or bottom plate) of the deodorizer body 1. Further, the end of the exhaust duct D may be connected and opened to a part of the peripheral wall of the deodorizer body 1.

  Rail portions 4 facing each other are formed at the left and right or upper and lower opposing edge portions of the discharge port 2, and the filter plate 3 is inserted along the rail portions 4, and is detachable by a fixture 5 such as a bolt. It is fixed.

  With such a configuration, the filter plate 3 can be easily attached and detached.

  A plate-like cover 6 is formed on the outside of the discharge port 2 so as to protrude from the discharge port 2 at a predetermined interval and substantially parallel to the front surface of the discharge port 2.

  With such a configuration, the exhaust hits the cover 6 and is discharged in a distributed manner on the left and right or up and down, the exhaust pressure is reduced, and the kitchen exhaust is not discharged in a specific direction. The part facing 2 is not contaminated.

  The deodorizing filter constituting the filter plate has a multilayer plate structure of at least three layers, and the front and back layers are formed by a metal filter member 3A in which a deodorizing agent is attached to a porous metal plate, and at least one layer in between. Is formed by a porous elastic filter member 3B to which a deodorizing agent is attached, and each of these filter members can be combined or disassembled in a plate shape.

  A deodorizing substance mainly composed of a titania compound is attached to the metal filter member 3A, and a deodorizing substance made of activated carbon is attached to the elastic filter member 3B. For the elastic filter member 3B, it is effective to attach an activated carbon impregnated with a deodorant as a deodorizing substance.

  According to the structure of the deodorizing filter, various odorous substances can be efficiently captured and deodorized by the metal filter member 3A and the elastic filter member 3B. Further, since the surface is constituted by the metal filter member 3A and the intermediate elastic filter member 3B is protected, the intermediate elastic filter member 3B holds activated carbon which is structurally robust and easily peels off and deteriorates. Therefore, the deodorizing effect can be expected to last.

  According to the deodorizing method of the present invention, the above-mentioned deodorizing apparatus and deodorizing filter are used, and at the outdoor side end of the path for exhausting exhaust containing odors from the kitchen etc. from the indoor side to the outdoor side, a sealed box type A deodorizer is installed, the exhaust is introduced into the deodorizer main body 1, and the exhaust is externally attached to the wall of the deodorizer main body 1 through a porous filter plate 3 having a deodorizing function. It is made to deodorize and discharge to the outdoors.

  With the above configuration, in the deodorizing apparatus and the deodorizing method of the present invention, the contact area between the exhaust and the filter plate can be increased, the exhaust pressure can be reduced, the problem of exhaust failure is solved, and the efficiency of supplementing bad odor is improved. improves. Further, maintenance work such as filter plate replacement cleaning is easy, and the clogged state can be easily determined visually.

  In addition, the deodorizing filter of the present invention can efficiently capture and deodorize various odorous substances, is structurally robust, and can be easily maintained, cleaned and regenerated for the deodorizing effect.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 7 show a first embodiment of a deodorizing apparatus for kitchen exhaust according to the present invention.

  The deodorizing apparatus includes a sealed box-type deodorizing machine main body 1, and a front end portion of an exhaust duct D is connected and opened on the bottom surface thereof. The exhaust duct D is connected to an outdoor side end of a path (exhaust duct D1) for guiding and discharging kitchen exhaust gas containing odor from the indoor side to the outdoor side, and introduces the exhaust into the deodorizer body 1. The front end portion of the exhaust duct D1 is connected and opened to, for example, a kitchen range hood.

  The deodorizing machine main body 1 has a polygonal wall (in this embodiment, a quadrangular shape), and a window-shaped discharge port 2 is formed in each of the polygonal flat walls. A porous filter plate 3 having a function is detachably provided. Each filter plate 3 has a rectangular thick plate shape and has a multilayer structure that can be disassembled. The exhaust gas introduced into the inside of the deodorizer body 1 from the exhaust duct D is deodorized and discharged out of the deodorizer body 1 through the filter plate 3.

  Rail portions 4 facing each other are formed at the upper and lower opposing edge portions of the discharge port 2, and the filter plate 3 is inserted along the rail portion 4 so as to be freely inserted and withdrawn. It is made to cover tightly. The rail portion 4 is a substantially Z-shaped longitudinal member having an attachment piece integrally bent at the base edge of the L-shaped piece, and is detachably fixed to the outer wall surface of the deodorizer body 1. The filter plate 3 is inserted into the rail portions 4 and 4 from one side of the discharge port 2, and is inserted into the stopper portion 7 provided to protrude from the edge of the other side of the discharge port 2. Is applied. The stopper portion 7 is formed by a substantially Z-shaped longitudinal member having the same shape as the rail portion 4 as a whole. When the filter plate 3 is in the inserted state, the front surface of the upper and lower edges and the front surface of the other edge are covered with the upper piece 4 a of the rail portion 4 and the upper piece 7 a of the stopper portion 7.

  At one side edge of the discharge port 2, one or a plurality of (upper and lower two in this embodiment) fixing tools 5 for detachably fixing the filter plate 3 in the inserted state are detachable. Is provided. The fixture 5 includes a detachable member 8 formed of a butterfly bolt that is removably screwed into a screw hole formed in the frame of the edge portion, and a fixing piece 9 that is rotatably held on the outer periphery of the detachable member 8. It consists of. The fixing piece 9 has a U-shape, and the screw holes of the upper and lower pieces are rotatably held on the outer periphery of the detachable member 8, and the holding piece 9a formed by bending downward at the distal end extension portion of the upper piece is inserted. The upper surface of one side edge portion of the filter plate 3 in a state is pressed and fixed.

  In order to attach the filter plate 3 to the deodorizer body 1, the filter plate 3 is inserted into the rail portions 4, 4, the exhaust port 2 is closed, and the attachment / detachment is performed with the detachable member 8 of the fixture 5 being screwed and removed. The member 8 is screwed. Thus, the upper surface of the edge portion of the filter plate 3 may be pressed with the pressing piece 9a of the fixed piece 9.

  A flat cover 6 is provided on the front side of each flat wall portion of the deodorizer body 1 with a predetermined interval in parallel with the discharge port 2 and the filter plate 3. The cover 6 is formed of a substantially U-shaped plate on the side surface, and upper and lower end edges thereof are detachably fixed above and below the discharge port 2 in the wall portion of the deodorizer body 1. Exhaust gas discharged from the discharge port 2 and the filter plate 3 hits the cover 6 and is distributed and discharged on both sides. Reference numeral 12 in the figure is a leg that supports the deodorizer body 1 on an outdoor flat ground or a roof.

  By fixing, for example, the four corners of the flat cover 6 to the wall of the deodorizer body 1 with stays, the exhaust discharged from the discharge port 2 and the filter plate 3 is distributed in the vertical and horizontal directions of the cover 6 and discharged. May be.

As shown in FIGS. 6 and 7, the filter plate 3 constituting the deodorizing filter has a thick plate shape of a porous rectangle having a deodorizing function. The filter plate 3 has a multilayer plate structure of at least three layers, and the front and back layers are formed by a metal filter member 3A in which a deodorizing agent is attached to a porous metal plate, and at least one intermediate layer is a deodorizing agent. Is formed by a porous elastic filter member 3B to which is attached. These filter members are laminated in multiple layers, inserted into a U-shaped metal edge plate 10, and can be joined or disassembled in a plate shape by a stopper 11 such as a screw. Each of the filter members constituting the filter plate 3 is formed in a three-dimensional network (porous body), and increases the contact surface area between the odorous substance and the deodorizing agent, thereby improving the contact efficiency with the odorous substance, and the odorous substance. Has the haste of breaking down. Further, by increasing the contact surface area, a porosity of 80% or more is created, and by securing a surface area of 0.25 m ² , an air volume of 900 m ³ / h per three filter plates can be processed.

  The metal filter member 3A has a porous wire netting structure made of nickel wire, and a deodorizing substance mainly composed of a titania compound is attached to the metal filter member 3A by a method such as spray drying by spraying. The elastic filter member 3B is formed by a porous plate made of polyurethane resin, impregnated by impregnating activated carbon with a water-based deodorant or impregnating it in a chemical solution, and immersing or spraying particles or powders of such deodorizing substances. Is attached. As the deodorant, a known deodorant that has a deodorizing action against ammonia, trimethylamine (fish odor), and methyl mercaptan (humid odor) in exhaust gas can be used. The malodorous substance is adsorbed by the fine pores of the activated carbon, and the odorous substance adsorbed by the deodorizer applied to the activated carbon is neutralized and decomposed.

  According to the structure of the deodorizing filter, various odorous substances can be efficiently captured and deodorized by the metal filter member 3A and the elastic filter member 3B. Since a deodorizing substance mainly composed of a titania compound is attached to the metal filter member 3A on the surface, it is deodorized using the same active oxygen as the photocatalyst. Persistence can also be expected. Further, since the elastic filter member 3B in the middle part is protected by the metal filter member 3A on the surface, it is structurally robust and easily disassembled, and a new kind of activated carbon is added to the intermediate elastic filter member 3B. It can be immersed and held, and its maintenance and regeneration are easy.

  According to the embodiment of the present invention, the titania compound of the metal filter member 3A removes ammonia (generated during carbonization), which is a malodorous substance in kitchen exhaust, at a rate of 99.7%, and hydrogen sulfide at 86.0%. It was possible to remove acetic acid at 94.9%, isovaleric acid at 93.0%, and acetaldehyde at a high removal rate of 65.0%. Furthermore, with the deodorizer of the elastic filter member 3B, the ammonia is removed at a high removal rate of 98.0%, trimethylamine (fish odor) is 91.0%, and methyl mercaptan (smelly odor) is 86.0%. I was able to.

FIG. 8 shows a second embodiment of a kitchen exhaust deodorizing apparatus according to the present invention.
In this embodiment, two discharge ports 2 and two filter plates 3 are provided in parallel on each of the polygonal flat walls of the deodorizer body 1. Four discharge ports 2 and four filter plates 3 may be provided side by side on the top, bottom, left and right of each flat wall.
Thus, by providing a plurality of outlets 2 and filter plates 3 side by side on one wall, the flat area of each filter plate 3 can be formed small, and handling and disassembly of the filter plates 3 and disassembly are possible. Work such as assembly and cleaning becomes easy.
Since other configurations and operations are the same as those of the first embodiment, the same reference numerals are assigned to corresponding portions in the drawings, and detailed description thereof is omitted.

  INDUSTRIAL APPLICABILITY The present invention can be used not only for business use but also installed in a discharge section at an end portion on the outdoor side of an exhaust path from a source of bad odor such as a household kitchen, a toilet, a warehouse, and a garbage collection place.

It is a schematic block diagram of the deodorizer concerning 1st Embodiment of this invention. It is a perspective view of the deodorizer. It is the side view which removed the cover of the deodorizer. It is the top view which removed the cover of the deodorizer. It is a disassembled perspective view of the deodorizing filter part of the deodorizing machine. It is a perspective view of the filter board of the deodorizer. It is a disassembled perspective view of the filter board of the deodorizer. It is the side view which removed the cover of the deodorizer concerning 2nd Embodiment of this invention.

Explanation of symbols

D, D1 Duct 1 Deodorizer body 2 Discharge port 3 Filter plate, 3A Metal filter member, 3B Elastic filter member 4 Rail part, 4a Upper piece 5 Fixing tool 6 Cover 7 Stopper part, 7a Upper piece 8 Detachable member 9 Fixing piece, 9a Presser piece 10 Edge plate 11 Stopper 12 Leg

Claims (11)

  It is installed at the outdoor side end of the path for exhausting odorous exhaust from the indoor side to the outdoor side, and it is equipped with a sealed box type deodorizer body that introduces the exhaust into the interior, on the wall of the deodorizer body The exhaust port is formed with an opening, and a porous filter plate having a deodorizing function is detachably provided in the exhaust port, and the exhaust gas introduced into the inside of the deodorizer body is discharged outside the deodorizer body through the filter plate. The deodorizing apparatus characterized by becoming the structure made.   The main body of the deodorizer has a sealed box shape, and an exhaust duct is connected to an upper or lower wall portion, and a polygonal peripheral wall is provided with a window-shaped outlet on each of the polygonal flat walls. The deodorizing apparatus according to claim 1, wherein a porous filter plate having a deodorizing function is detachably provided at each outlet.   Rail portions facing each other are formed on left and right or upper and lower opposing edge portions of the discharge port, and the filter plate is inserted along the rail portions and fixed detachably by a fixture. The deodorizing apparatus according to claim 1 or 2.   4. A plate-like cover is formed on the outside of the discharge port so as to protrude from the discharge port at a predetermined interval and substantially parallel to the front surface of the discharge port. Deodorization equipment.   The filter plate has a multilayer plate structure of at least three layers, and the front and back layers are formed by a metal filter member in which a deodorizing agent is attached to a porous metal plate, and at least one layer in the middle is attached to the deodorizing agent. The deodorizing apparatus according to any one of claims 1 to 4, wherein the deodorizing apparatus is formed of a porous elastic filter member that is caulked, and each of the filter members can be combined or disassembled in a plate shape.   The metal filter member constituting the filter plate is attached with at least a deodorizing substance mainly composed of a titania compound, and the elastic filter member is attached with a deodorizing substance made of at least activated carbon. The deodorizing apparatus according to any one of claims 1 to 5.   The deodorizing apparatus according to claim 6, wherein the deodorizing substance attached to the elastic filter member is obtained by impregnating the activated carbon with a deodorant.   A multilayer plate structure of at least 3 layers is formed, and the front and back layers are formed by a metal filter member having a deodorizing agent attached to a porous metal plate, and at least one layer in the middle is a porous elastic having a deodorizing agent attached thereto. A deodorizing filter formed by a filter member, wherein each of these filter members can be combined or disassembled in a plate shape.   The deodorizing substance mainly composed of at least a titania-based compound is attached to the metal filter member, and the deodorizing substance made of at least activated carbon is attached to the elastic filter member. Deodorizing filter.   The deodorizing apparatus according to claim 9, wherein the deodorizing substance attached to the elastic filter member is obtained by impregnating the activated carbon with a deodorant.   A sealed box type deodorizer is installed at the end of the outdoor side of the path for exhausting odorous exhaust from the indoor side to the outdoor side, and the exhaust is introduced into the deodorizer body, and the exhaust is deodorized. A deodorizing method characterized in that it is deodorized by discharging it out of the main body of the deodorizer through a porous filter plate having a deodorizing function that is detachably provided on the wall of the main body.

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