JP5517907B2 - Photocatalytic device - Google Patents

Description

  The present invention relates to a photocatalyst device provided with a photocatalyst filter. More specifically, the photocatalyst filter is cleaned during maintenance without removing the photocatalyst filter from its mounting location (in other words, with the photocatalyst attached) to regenerate the capability of the photocatalytic filter. It is related with the photocatalyst apparatus which can be made. The present invention can be applied to any device using a photocatalyst, such as a photocatalyst deodorization device, a photocatalyst sterilization (antibacterial) device, a photocatalyst purification device, and the like.

BACKGROUND ART A photocatalytic deodorizing apparatus including a photocatalytic filter and a light source for activating the photocatalytic filter by irradiating light has been known. A typical photocatalyst is titanium oxide (TiO ₂ ). In this type of photocatalyst deodorization apparatus, the strong oxidization action of the photocatalyst is used to adsorb and decompose the odor contained in the gas to be treated. In other words, the organic substance contained in the gas to be treated is decomposed into water and carbon dioxide by the oxidizing action of the photocatalyst generated by the ultraviolet irradiation, and the odor components in the gas are adsorbed and decomposed.

  However, due to the oxidizing action of the photocatalyst, the sulfur compound (for example, hydrogen sulfide) becomes sulfuric acid and the nitrogen compound (for example, ammonia) becomes nitric acid, and adheres to the surface of the photocatalyst. And these deposit | attachments become catalyst poison and reduce the capability of a photocatalyst filter. For this reason, it is necessary to periodically take out the photocatalytic filter, wash it with water, and fire it to regenerate the ability of the photocatalytic filter. Also, it is necessary to replace the photocatalyst filter that cannot be used for some reason with a new one.

  The same applies to the light source (for example, black light), and it is necessary to periodically check the light source and periodically replace a failed light source or a light source that has reached the end of its life with a new one.

  As described above, since the photocatalyst deodorization apparatus regularly requires maintenance work such as inspection, cleaning, and replacement of the built-in photocatalyst filter and light source, it is desirable that the work can be easily performed. Thus, techniques for facilitating such maintenance work have been proposed for some time.

  For example, in the photocatalytic device disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-246228) (in this device, deodorization is not limited), at least a base frame having a bottom plate and left and right side plates is used for ultraviolet irradiation. A light source and a filter frame for attaching a filter are attached, and the photocatalytic filter is detachably attached to the filter frame. During maintenance of the photocatalyst filter, the photocatalyst filter can be inspected, cleaned, replaced, etc. by lifting the filter frame to expose the photocatalyst filter from the base frame and removing the fixture fixing the photocatalyst filter. . For this reason, when a function falls, a photocatalyst filter can be removed from a photocatalyst apparatus, can be washed, or can be exchanged for a new article. Therefore, the whole photocatalyst device can be used semipermanently. (See claim 1, FIGS. 1-7, paragraphs 0006-0009, 0050-0054).

  However, in the photocatalyst device disclosed in Patent Document 1, since the light source for ultraviolet irradiation is individually attached to the base plate, it takes time to replace and maintain the light source, and it is not suitable for a large-scale device. There are difficulties. Therefore, an example of a photocatalyst deodorizing apparatus that solves this difficulty is disclosed in Patent Document 2 (Japanese Patent Laid-Open No. 2006-334195).

  In the photocatalyst deodorization apparatus of Patent Document 2, a plurality of plate-like photocatalytic filters are unitized by a holding body, and a plurality of light sources (for example, black light) are unitized by a frame. A plurality of unitized photocatalytic filters and light sources are alternately arranged perpendicular to the gas flow axis, and can be inserted and removed independently in a direction perpendicular to the gas flow axis. ing. For this reason, if the photocatalyst filter or light source unitized from the inside of the casing is pulled out in the direction orthogonal to the gas flow axis, the photocatalyst filter and the light source can be easily inspected and replaced, and therefore maintenance is performed. Work is greatly reduced. Further, it is not necessary to move the entire photocatalyst deodorization apparatus or to perform detailed disassembly work of the apparatus. Therefore, even if the apparatus becomes large-scale, maintenance work is easy (see claim 1, FIGS. 1 to 3, paragraphs 0011 to 0016, 0022).

JP 2001-246228 A JP 2006-334195 A

  However, in the photocatalyst deodorization apparatus of Patent Document 2, how to realize a configuration in which the photocatalytic filter unit or the light source unit can be pulled out from the casing in the same direction and pulled out or inserted in the reverse direction? Is not specifically disclosed. If both units are light enough to allow the operator to easily insert and remove the photocatalytic filter unit or light source unit, it would be easy to realize such a configuration. If the weight of both units increases to the extent that it is difficult to insert and remove, it is not easy to realize.

  For example, when the size of the photocatalytic filter unit is a rectangular plate having a length of about 1400 mm and a width of about 900 mm, the weight is as large as about 50 kg. Therefore, when the photocatalyst filter unit and the light source unit are enlarged to this extent, the operator manually removes and inserts each unit of the photocatalyst deodorization device of Patent Document 2 to perform work such as inspection and replacement of the photocatalyst filter and the light source. Seems to be difficult unless the movement mechanism of those units is devised. There is no description in Patent Document 2 regarding measures relating to this point.

  By the way, when the photocatalyst filter unit or the light source unit is enlarged to such an extent that it cannot be easily moved manually by the operator, the photocatalyst filter cleaning work is performed more frequently than the photocatalyst filter inspection and replacement or the light source inspection and replacement. However, it is very preferable if the photocatalytic filter can be executed without removing it from its mounting location (while it is mounted). This is because not only the frequency of labor-intensive maintenance work is reduced, but also the maintenance cost is reduced, and the risk of damaging the photocatalytic filter during attachment / detachment is also reduced.

  Even if the photocatalyst filter unit and the light source unit are not enlarged as described above, it is very advantageous if the photocatalyst filter can be recovered without being removed from the mounting location to recover the photocatalyst filter performance.

  In Patent Document 1 and Patent Document 2 described above, there is no description and no suggestion of performing the performance recovery of the photocatalytic filter by washing without removing it from the mounting location.

  The present invention has been made in consideration of such circumstances, and the purpose of the present invention is to perform cleaning without removing the photocatalytic filter from its mounting position (that is, while it is mounted) during maintenance. An object of the present invention is to provide a photocatalytic device that can be recovered and can be realized with a simple configuration.

  Another object of the present invention is to provide a photocatalytic device that can easily perform maintenance work other than cleaning of the photocatalytic filter, such as inspection and replacement of the photocatalytic filter (or a light source mounted on the photocatalytic filter module). It is in.

  Still another object of the present invention is to inspect and replace a photocatalytic filter or light source even when the photocatalytic filter module (or photocatalytic filter unit or light source unit) is enlarged to such an extent that it cannot be easily moved manually by an operator. An object of the present invention is to provide a photocatalyst device that allows an operator to perform maintenance work other than cleaning of the photocatalytic filter alone.

  Other objects of the present invention which are not specified here will become apparent from the following description and the accompanying drawings.

(1) The photocatalytic device of the present invention comprises:
A substantially flat photocatalytic filter module including a photocatalytic filter mounted in a substantially vertical direction;
A cleaning liquid supply pipe having an opening, fixed to the photocatalytic filter module above the photocatalytic filter;
A discharge port provided in the photocatalytic filter module below the photocatalytic filter,
When supplying the cleaning liquid from the outside to the cleaning liquid supply pipe, the cleaning liquid falls from the opening of the cleaning liquid supply pipe toward the photocatalytic filter and flows along the photocatalytic filter,
The cleaning liquid after flowing along the photocatalytic filter is configured to be discharged from the discharge port to the outside of the photocatalytic filter module.

  As described above, the photocatalytic device of the present invention includes a photocatalytic filter in which a substantially flat photocatalytic filter module is mounted in a substantially vertical direction, a cleaning liquid supply pipe fixed above the photocatalytic filter, and the photocatalytic filter. And a discharge port provided below. When supplying the cleaning liquid from the outside to the cleaning liquid supply pipe, the cleaning liquid falls from the opening toward the photocatalytic filter and flows along the photocatalytic filter, and the cleaning liquid after flowing along the photocatalytic filter is: It is comprised so that it may discharge | emit outside from the said discharge port.

  For this reason, when the cleaning liquid flows along the photocatalytic filter, a self-cleaning function due to the super-lyophilic property of the photocatalytic filter is exhibited, and further, harmful deposits existing on the surface of the photocatalytic filter ( Since the catalyst poison) is often soluble, most of its harmful deposits are automatically washed away by the cleaning solution. Therefore, at the time of maintenance, the photocatalytic filter can be washed to recover its ability without removing it from its mounting location (that is, with the photocatalyst filter mounted).

  The components necessary for cleaning the photocatalytic filter include a photocatalytic filter module including a photocatalytic filter mounted in a substantially vertical direction, and a cleaning liquid supply pipe configured to drop the cleaning liquid toward the photocatalytic filter. Since only the discharge port for discharging the cleaning liquid after flowing along the photocatalytic filter to the outside is sufficient, it can be realized with a simple configuration.

  (2) In a preferred example of the photocatalyst device of the present invention, the cleaning liquid supply pipe is substantially orthogonal to the photocatalyst filter module and a first portion that extends along the photocatalyst filter module above the photocatalyst filter. A second portion extending in a direction, wherein the opening of the cleaning liquid supply tube is formed in the first portion, and the second portion is a cleaning liquid supply of an external communication tube or other photocatalytic filter module It can be connected to the second part of the tube.

  In this example, even when a plurality of the photocatalytic filter modules are arranged adjacent to each other, the cleaning liquid can be easily supplied from the outside to the cleaning liquid supply pipe, and the cleaning liquid can easily flow uniformly throughout the photocatalytic filter. There is an advantage that it is easy to supply.

  (3) In another preferable example of the photocatalyst device of the present invention, the photocatalyst device further includes a cleaning liquid reservoir provided in the photocatalyst filter module below the photocatalyst filter, and a lid member attached to the discharge port. The lid member is configured to be opened and discharge the cleaning liquid to the outside when the cleaning liquid temporarily stored in the cleaning liquid storage unit reaches a predetermined amount.

  In this example, the cleaning liquid after flowing along the photocatalytic filter is temporarily stored in the cleaning liquid reservoir until the predetermined amount is reached, so the cleaning liquid after flowing along the photocatalytic filter There is an advantage that it is easy to collect and store in a predetermined amount and then to transport and store it in a specific place (for example, a place where the cleaning liquid is regenerated).

  (4) In still another preferred example of the photocatalyst device of the present invention, a cleaning liquid guide having an opening on the bottom surface is disposed between the cleaning liquid supply pipe and the photocatalytic filter, and the photocatalyst apparatus falls from the opening of the cleaning liquid supply pipe. The cleaning liquid is temporarily stored in the cleaning water guide part, and then drops toward the photocatalytic filter through the opening of the cleaning liquid guide part.

  In this example, since the cleaning liquid guide portion is disposed between the cleaning liquid supply pipe and the photocatalytic filter, there is an advantage that the restriction on the position where the cleaning liquid supply pipe is disposed is relaxed. In the case where the cleaning liquid is dropped directly toward the photocatalytic filter through the opening of the cleaning liquid supply pipe, the position of the cleaning liquid supply pipe is arranged almost directly above the photocatalytic filter over the entire length of the photocatalytic filter. However, in this example, the cleaning liquid guide is disposed between the cleaning liquid supply pipe and the photocatalyst filter, so that there is no such need. The position of the cleaning liquid supply pipe can be set at an arbitrary position where the cleaning liquid can be supplied from the opening of the cleaning liquid supply pipe to the cleaning liquid guide portion, which is advantageous in design.

  (5) In still another preferred example of the photocatalyst device of the present invention, the lid member is attached to the photocatalyst filter module in a state of being inserted into a gap formed in the vicinity of the discharge port, and the cleaning liquid It has the 1st part located inside the storage part, and the 2nd part located outside the said washing | cleaning liquid storage part, It is comprised so that the said discharge port may be closed by the said 2nd part.

  In this example, the first part that receives the weight of the cleaning liquid stored inside the cleaning liquid storage part, and the first part that receives the weight of the cleaning liquid stored via the discharge port outside the cleaning liquid storage part. When the amount of the cleaning liquid stored in the cleaning liquid reservoir reaches a predetermined amount only by adjusting the area ratio with the two parts, the lid member is opened and the cleaning is discharged from the discharge port. There is an advantage that you can.

  (6) In still another preferred example of the photocatalyst device of the present invention, the lid member is formed of a rigid plate bent at a boundary between the first portion and the second portion, and the lid member is bent. A portion is slidably engaged with the gap.

  In this case, there is an advantage that the lid member can be easily formed and the lid member can be easily attached to the cleaning liquid reservoir.

  (7) In still another preferred example of the photocatalyst device of the present invention, the photocatalyst filter module is arranged in a substantially vertical direction and is supported in a state in which it can be translated in a substantially horizontal direction by a translational movement mechanism. The

  In this example, since the photocatalytic filter module can be easily translated in a substantially horizontal direction in a state of being arranged in a substantially vertical direction, the photocatalytic filter can be washed in addition to the photocatalytic filter (or There is an advantage that maintenance work other than cleaning of the photocatalyst filter, such as inspection and replacement of the light source mounted on the photocatalyst filter module, can be easily performed.

  Even when the photocatalyst filter module (or photocatalyst filter unit or light source unit) is enlarged to such an extent that it cannot be easily moved manually by an operator, the photocatalyst filter or light source can be inspected and replaced. There is also an advantage that maintenance work other than cleaning can be performed by an operator alone.

  (8) In the example of (7), it is preferable that a plurality of the photocatalytic filter modules are arranged adjacent to each other in the casing.

  In this case, since a plurality of the photocatalytic filter modules are disposed adjacent to each other in the casing, there is an advantage that the filtering effect by the photocatalytic filter can be easily increased.

  (9) In the example of (8), the translational movement mechanism includes a first support body and a second support body provided on the upstream side and the downstream side in the gas flow direction, the first support body, and the first support body, respectively. It is preferable that one or a plurality of the photocatalytic filter modules are supported so as to be capable of translational movement in a state of being suspended from the slide rail.

  In this case, there is an advantage that it is possible to realize support and translation of one or a plurality of the photocatalytic filter modules with a simple configuration.

  (10) In the example of the above (9), it is preferable that both the standby space and the maintenance space are formed inside the casing.

  In this case, there is an advantage that the configuration of the casing is simplified.

  (11) In the example of (9) above, the standby space is formed outside the casing, and a predetermined portion of the casing can be opened. During maintenance, the predetermined portion is opened. Preferably, the photocatalytic filter module can be translated into the standby space.

  In this case, since the size of the casing can be reduced by an amount corresponding to the standby space, there is an advantage that space saving can be achieved.

  In the photocatalyst device of the present invention, (a) during maintenance, the photocatalyst filter can be cleaned without removing it from its mounting location (that is, with the photocatalyst mounted) to recover its capability, and can be realized with a simple configuration. effective.

  In the photocatalyst device of the present invention, when the photocatalyst filter module is arranged in a substantially vertical direction and supported in a state in which it can be translated in a substantially horizontal direction by a translational movement mechanism, an effect (a (B) The effect that maintenance work other than cleaning of the photocatalyst filter such as inspection and replacement of the photocatalyst filter (or the light source mounted on the photocatalyst filter module) can be easily performed, and (c) ) Even if the photocatalyst filter module (or photocatalyst filter unit or light source unit) is enlarged to such an extent that it cannot be easily moved manually by an operator, other than photocatalyst filter cleaning such as inspection and replacement of the photocatalyst filter or light source There is an effect that the maintenance work can be performed by one worker alone.

It is a conceptual diagram which shows the structure (at the time of driving | operation) of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a conceptual diagram which shows the structure (at the time of a maintenance) of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. (A) is the front view of the module main body which comprises the photocatalyst filter module of the photocatalyst deodorizing apparatus concerning 1st Embodiment of this invention, (b) is the side view, (c) is the bottom view, (d) is FIG. (A) is a bottom view of the cleaning water supply pipe incorporated in the module main body of FIG. 3, (b) is a front view thereof, and (c) is a front explanatory view showing a state of dropping of the cleaning water. FIG. 3A is a plan view of a cleaning water guide portion incorporated in the module main body of FIG. 3, FIG. 3B is an explanatory view showing a state in which cleaning water falls from the opening of the cleaning water guide portion, and FIG. It is a top view which shows the other structural example of the washing water guide part integrated in the module main body. (A) is the front view of the filter frame which comprises the photocatalyst filter module of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention, (b) is the side view, (c) is the bottom view. (A) is a front view which shows the structure which incorporated the filter frame of FIG. 6 in the module main body of FIG. 3, (b) is the side view. (A) is a front view which shows the state which mounted | wore the structure of FIG. 7 with the photocatalyst filter, (b) is the side view. (A) is a front view which shows the state which mounted | wore the black light to the structure of FIG. 8, (b) is the side view. (A) is the front view which shows the photocatalyst filter module comprised by mounting | wearing the structure of FIG. 9 with the engagement member which incorporates a pulley, and an inverter, (b) is the top view. (A) is a fragmentary sectional view which shows the structure of the translation movement mechanism used for the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention containing a slide rail and the pulley which rolls on it, (b) is the It is a partial top view. It is a front view which shows schematic structure of the photocatalyst filter currently used for the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a fragmentary sectional view along the AA line of Fig.10 (a) which shows the state which mounted | wore the photocatalyst filter mounting window of the filter frame of FIG. 6 with the photocatalyst filter of FIG. In the photocatalyst deodorization apparatus which concerns on 1st Embodiment of this invention, the wash water discharged | emitted from the wash water supply pipe | tube shows the condition which falls to a wash water storage part along each of a photocatalyst filter through a wash water guide part. It is explanatory drawing. In photocatalyst deodorizing apparatus concerning a 1st embodiment of the present invention, it is an explanatory view showing opening and closing operation of a lid member with which a drain outlet of a washing water storage part is equipped, (a) is before washing water storage, (b) is (C) shows the state at the time of washing water discharge during washing water storage. (A) is a top view which shows the whole structure of the cover member shown in FIG. 15, (b) is the front view. FIG. 16 is an explanatory plan view illustrating a state in which the lid member illustrated in FIG. 15 is mounted in the vicinity of the drain port of the cleaning water storage unit. In the photocatalyst deodorization apparatus according to the first embodiment of the present invention, the second portions of the cleaning water supply pipes of the photocatalytic filter modules are connected to each other, and the cleaning water supply pipe of the photocatalytic filter module located closest to the module support body It is a fragmentary sectional explanatory view showing the situation where the 2nd part of is connected to a connecting pipe provided in a module support. It is a partially cutaway side view which shows the whole structure at the time of the driving | operation of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a partially notched side view which shows the whole structure at the time of the maintenance of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a top view which shows the whole structure at the time of the driving | operation of the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a partially notched side view which shows the whole structure at the time of the driving | operation of the photocatalyst deodorizing apparatus which concerns on 2nd Embodiment of this invention. It is a partially notched side view which shows the whole structure at the time of the maintenance of the photocatalyst deodorizing apparatus which concerns on 2nd Embodiment of this invention. It is a conceptual diagram which shows the method to forcibly contaminate a photocatalyst filter with ammonia in the washing | cleaning test implemented about the photocatalyst deodorizing apparatus which concerns on 1st Embodiment of this invention. It is a conceptual diagram which shows the implementation method of the washing | cleaning test of FIG. It is a graph which shows the relationship between the washing | cleaning time obtained by the washing | cleaning test shown in FIG. 25, and the electrical conductivity of the wash water in a tank. It is a table | surface which shows the removal rate and density | concentration change after washing | cleaning before and after ammonia pollution obtained by the washing | cleaning test of FIG. It is a table | surface which shows the relationship of each parameter between the small scale used by the washing | cleaning test of FIG. 25, and an actual machine.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.

(Whole structure of the photocatalyst deodorization apparatus of 1st Embodiment)
The outline of the structure of the photocatalyst deodorizing apparatus 1 which concerns on 1st Embodiment of this invention is shown in FIG. 1 and FIG. The present embodiment corresponds to a case where the present invention is applied to a photocatalytic deodorization apparatus, but the present invention is not limited to this. Any photocatalytic device provided with a photocatalytic filter can be applied to photocatalytic devices other than the photocatalytic deodorizing device, for example, photocatalytic sterilization (antibacterial) devices, photocatalytic purification devices, and the like.

  As is clear from FIGS. 1 and 2, the photocatalyst deodorization apparatus 1 is hung on the slide rail 12 by two parallel slide rails 12 installed horizontally at a predetermined interval and a locking member 24. And five photocatalytic filter modules 20 supported in a state.

  One end of each slide rail 12 is fixed to the module support 11 and the other end is fixed to a rail support 13 (see FIG. 19). Thus, both the slide rails 12 are bridged between the module support body 11 and the rail support body 13, and extend in parallel and horizontally between the support bodies 11 and 13.

  Each of the photocatalytic filter modules 20 has a rectangular plate shape, and can be manually translated between the module support 11 and the rail support 13 along the slide rail 12 in the horizontal direction. Of these five modules 20, the module 20 closest to the rail support 13 includes only the eight photocatalytic filters 30 and does not include the black light 27. The four modules 20 other than those closest to the rail support 13 include eight photocatalytic filters 30 and four black lights 27.

  In this specification, when referring to the whole of the five modules 20 described above, it is referred to as a “photocatalytic filter / module group 20B” and also refers to only four modules 20 including both the photocatalytic filter 30 and the black light 27. Sometimes referred to as “photocatalytic filter module group 20A”. Therefore, the photocatalyst filter / module group 20B is equivalent to the photocatalyst filter / module group 20A added with the module 20 including only the photocatalyst filter 30.

  The slide rail 12 and the photocatalytic filter / module group 20B are arranged inside a box-shaped casing 10 (see FIGS. 19 to 21), as will be described later. In the casing 10, the gas to be treated flows along the extending direction of the slide rail 12, that is, the gas flow direction indicated by the arrows in FIGS. 1 and 2. Therefore, the module group 20B is orthogonal to the gas flow direction. The module support 11 (which corresponds to the first support) is arranged on the downstream side of the module group 20B. The rail support 13 (which corresponds to the second support) is disposed on the upstream side of the module group 20B.

  During operation of the photocatalyst deodorization apparatus 1, as shown in FIG. 1, all the modules 20 in the module group 20B are brought into contact with the opposing surface of the module support 11 in a state where they are overlapped with each other. In this state, a standby space S1 is formed on the opposite side of the module support 11 (the same side as the rail support 13).

  At the time of maintenance of the photocatalyst deodorizing apparatus 1, as shown in FIG. 2, the module 20 located upstream from the maintenance target module 20 is translated toward the rail support 13 (that is, toward the upstream side) as necessary. By moving, the necessary maintenance space S2 is formed in the vicinity of the upstream side of the module 20 to be maintained. In FIG. 2, since the module 20 to be maintained is arranged second from the upstream side in the module group 20B, only the module 20 at the upstream end (that is, the most upstream position) is used as the rail support body 13. What is necessary is just to move in translation (toward the upstream side) and place in the waiting space S1. As a result, a maintenance space S2 is formed in the vicinity of the upstream side of the maintenance target module 20 (in the vicinity of the downstream side of the translated module 20).

  In the state of FIG. 2, the module 20 at the most upstream position of the module group 20B can be maintained. This is because the module 20 can be accessed from the back side (downstream side) in the maintenance space S2.

  When the module 20 to be maintained is at the most upstream position of the module group 20B, the translational movement of the module 20 is not always necessary. This is because the standby space S1 generated in the state of FIG. 1 can be used for maintenance work as it is. In other words, the standby space S1 is used as the maintenance space S2.

(Photocatalytic filter module of the first embodiment)
Next, the configuration of each photocatalytic filter module 20 will be described in detail.

  The five modules 20 constituting the photocatalyst filter module group 20B all have the same configuration, and a plurality of (here, eight) photocatalyst filter units including a rectangular plate-like photocatalyst filter 30 and a plurality of light source light sources. This corresponds to a combination of light source units including four (here, four) black lights 27.

  According to the black light 27, the photocatalytic filter 30 can be activated by irradiating it with ultraviolet light having a predetermined wavelength. Needless to say, any other light source (for example, a light that emits visible light) can be used instead of the black light 27 as needed.

  The module 20 includes a rectangular frame-shaped module main body 21 having a high rigidity shown in FIGS. 3A to 3D and a rectangular frame shape having a high rigidity shown in FIGS. 6A to 6C. The filter frame 22 is provided. The module main body 21 and the filter frame 22 are both arranged such that the longitudinal direction thereof is the vertical direction.

  As shown in FIGS. 3A to 3D, a rectangular parallelepiped (box) -shaped cleaning water guide 33 is formed at the upper end of the module body 21, and the cleaning water is located above the cleaning water guide 33. A supply pipe 31 is fixed. As shown in FIG. 5A, a slit-shaped opening 33 a is formed along the cleaning water supply pipe 31 on the bottom surface of the cleaning water guide section 33, and the cleaning water guide section passes through the cleaning water supply pipe 31. The washing water W that has reached the inside of the water 33 naturally falls downward through the opening 33a.

  Instead of the cleaning water guide 33 having a single slit-like opening 33a formed on the bottom surface, a cleaning water guide 33 ′ (a plurality of small holes 33a ′ arranged on the bottom surface along the cleaning water supply pipe 31 at predetermined intervals is provided. You may use FIG.5 (c)).

  As the cleaning water W, pure water is preferably used. In order to enhance the cleaning effect, an appropriate ion exchange resin is added depending on the type of harmful deposits that adhere to the photocatalytic filter 20 during operation. Is preferred. Further, liquids other than pure water (for example, soft water) can also be used as the cleaning water W.

  As shown in FIGS. 4A and 4B, the cleaning water supply pipe 31 fixed inside the cleaning water guide 33 has a first portion 31a extending along the upper edge of the module body 21, and And a second portion 31b extending in a direction orthogonal to the module main body 21 itself. The first portion 31a and the second portion 31b are both formed using a circular pipe and are orthogonal to each other.

  The tip of the first portion 31a is closed by a closing portion 31d. The base end of the first portion 31a is joined to the central portion of the second portion 31b by welding, and the entire shape of the cleaning water supply pipe 31 is substantially T-shaped. A slit 31c is formed on the lower surface of the first portion 31a, and the cleaning water W that has reached the inside of the first portion 31a falls downward through the slit 31c. The slit 31c is slightly shorter than the entire length of the first portion 31a.

  Instead of the single slit 31c, a plurality of small holes may be formed at predetermined intervals along the first portion 31a, like the opening 33a ′ in FIG.

  Since the cleaning water supply pipe 31 is provided inside the cleaning water guide 33, the cleaning water W (see FIG. 4C) that has dropped through the slit 31c of the cleaning water supply pipe 31 is first washed water. It temporarily stays inside the guide portion 33, and then passes through the opening 33a of the cleaning water guide portion 33 (see FIG. 5B), and below the cleaning water guide portion 33, the window 23 of the filter frame 22 It reaches the upper part of the photocatalytic filter 30 attached to the. Thereafter, the photocatalyst filter 30 is automatically washed while further falling along the surface of the photocatalyst filter 30, and the washing water storage unit 32 (see FIGS. 7 to 9) provided at the lower end of the module main body 21 is used. Stored temporarily. Finally, the water is discharged out of the photocatalytic filter module 20 from a drain outlet 21 a provided at the lower end of the module body 21.

  The water supply possible range R2 of the cleaning water guide 33 is determined by the length of the opening 33a. Further, the water supply possible range R1 of the cleaning water supply pipe 31 is determined by the length of the slit 31c. As will be described later, the length and width of the opening 33a are set such that the cleaning water W is uniformly supplied to the whole of the two photocatalytic filters 30 arranged in parallel along the upper edge of the module body 21. Is set. On the other hand, the length and width of the slit 31c are such that the continuous supply of the cleaning water W to the photocatalytic filter 30 is not interrupted, so that the cleaning water W naturally passes through the slit 31c and falls into the cleaning water guide 33. Should be set.

  As can be seen from FIG. 4C and FIG. 5B, in the first embodiment, the water supply possible range R2 of the cleaning water guide 33 is slightly larger than the water supply possible range R1 of the cleaning water supply pipe 31. Is set to

  The module main body 21 is open except for the outer frame portion, the cleaning water guide portion 33 and the cleaning water storage portion 32.

  As shown in FIGS. 6A to 6C, the rectangular frame-shaped filter frame 22 has eight photocatalyst filter mounting windows 23 formed therein. Here, since the photocatalytic filter 30 is square, the window 23 is also square. The layout of the windows 23 is a matrix of two in the horizontal direction and four in the vertical direction.

  The filter frame 22 is in a state as shown in FIGS. 7A and 7B, that is, in a state where the upper end of the filter frame 22 is in contact with the lower end of the cleaning water guide portion 33 of the module body 21. It is fixed to the main body 21. As a result, a box-shaped cleaning water reservoir 32 is formed in the area sandwiched between the lower end of the filter frame 22 and the lower end of the module main body 21, in other words, at the lower end of the module main body 21. The washing water storage unit 32 is an area in which the washing water W that has been automatically washed while dropping the photocatalytic filter 30 along the surface thereof is temporarily stored. A drain outlet 21 a formed at the lower end of the module body 21 is located inside the washing water storage part 32.

  As shown in FIG. 7B, the filter frame 22 is fixed to the rear of the module main body 21. This is because a space for the black light 27 is formed in front of the filter frame 22 inside the module main body 21.

  In the configuration shown in FIGS. 7A and 7B, when the photocatalyst filter 30 is attached to each of the eight photocatalyst filter attachment windows 23, the configuration shown in FIGS. 8A and 8B is obtained. Since the filter frame 22 is fixed toward the rear of the module main body 21, the photocatalytic filter 30 is also arranged close to the rear of the module main body 21 as shown in FIG.

  In the configuration shown in FIGS. 8A and 8B, when four black lights 27 are mounted, the configuration shown in FIGS. 9A and 9B is obtained. Since the photocatalyst filter 30 is arranged close to the rear of the module main body 21, these black lights 27 are arranged inside the module main body 21 with the photocatalytic filter 30 as shown in FIGS. 9A and 9B. It can be mounted in an overlapping state. Inside the module main body 21, the photocatalytic filter 30 is arranged close to the rear, and the black light 27 is arranged close to the front, so that there is a gap between them, so the photocatalytic filter 30 and the black light 27 are arranged. Do not interfere with each other. As a result, there is no portion protruding forward or backward from the module main body 21, and the front and rear surfaces of the module main body 21 are both flat. Therefore, the configurations shown in FIGS. 9A and 9B are overlapped. The state shown in FIG. 1 can be obtained.

  For mounting the black light 27, two connector holding members 28a and eight connectors are used. The two connector holding members 28a are fixed near the upper end and the lower end of the module main body 21, respectively. Four connectors 28 are fixed at equal intervals on each connector holding member 28a, and two corresponding connectors 28 on each connector holding member 28a are adjusted so as to be in positions facing each other. Yes.

  Each black light 27 extends in the vertical direction so as to cover substantially the entire four photocatalyst filters 30 juxtaposed in the vertical direction, and is arranged at substantially equal intervals in the horizontal direction. This is because the ultraviolet light emitted from the black light 27 is irradiated as uniformly as possible to the entire surface of the eight photocatalytic filters 30 mounted on the window 23.

  The black light 27 and the connector 28 have the same configuration as the fluorescent lamp and the connector used in daily life, except that the ultraviolet light is irradiated instead of the visible light.

  In the configuration shown in FIGS. 9A and 9B, when the engaging member 24 incorporating the pulley 26 and the inverter 29 are fixed to the upper end surface of the module main body 21, FIGS. 10A and 10B are obtained. The photocatalytic filter module 20 having the structure shown is obtained. The pulley 26 is rotatably supported by a rotating shaft 25 built in the engaging member 24, and can roll on the slide rail 12 as shown in FIGS. 11 (a) and 11 (b). Since the pulley 26 is engaged with the concave groove 12 a on the surface of the slide rail 12 extending in the horizontal direction, the pulley 26 is automatically guided along the slide rail 12 and does not come off the slide rail 12.

  Here, the engaging member 24 has a shape obtained by cutting a rectangular pipe having both ends opened into a predetermined length, and a rotary shaft 25 extending along the upper edge of the module main body 21 (module 20). It has.

  Since the module 20 is supported by the horizontal slide rail 12 in a suspended state, the module 20 faces in the vertical direction by its own weight as shown in FIGS. In this state, translational movement in the horizontal direction is possible along the slide rail 12.

  The slide rail 12, the engaging member 24 that engages the module 20 with the slide rail 12, the pulley 26 that rolls on the slide rail 12, and the rotary shaft 25 that rotatably supports the pulley 26 (FIG. 11A). And (b) constitute a “translation mechanism” for translating the module 20 along the slide rail 12.

  As a material used for the module main body 21 and the filter frame 22, stainless steel which does not deteriorate by ultraviolet rays is preferably used.

  In the first embodiment, the translation mechanism includes a rail support 13 and a module support 11 (corresponding to the first support and the second support) provided on the upstream side and the downstream side in the gas flow direction, respectively. A slide rail 12 spanned between the rail support 13 and the module support 11 is included, and the module 20 is supported so as to be capable of translational movement while being suspended from the slide rail 12. For this reason, it is possible to realize support and translation of one or a plurality of modules 20 with a simple configuration.

(Photocatalytic filter of the first embodiment)
Next, a configuration of the photocatalytic filter 30 and a configuration in which the photocatalytic filter 30 is detachably attached to the module main body 21 (that is, the module 20) will be described.

  As shown in FIG. 12, the photocatalyst filter 30 is formed in a square sheet-like filter body 30a and two sides (here, an upper side and a lower side) that are opposite to the filter body 30a. And a belt-like locking projection 30b. The filter body 30a is formed by coating titanium oxide on the surface of a porous (foam) base material such as ceramics.

  Locking holes 22a as shown in FIG. 13 are formed in the upper and lower beam portions of the photocatalyst filter mounting windows 23 of the filter frame 22. The locking hole 22a penetrates in the vertical direction, and the cleaning water W can flow downward through the locking hole 22a.

  When the photocatalytic filter 30 is attached to the window 23, the filter body 30a in a flat state is bent slightly by applying an external force from above and below, and then the upper and lower locking projections 30b are inserted into the corresponding locking holes 22a. Insert and lock each. Thereafter, the application of the external force is stopped, the curve of the filter body 30a is eliminated, and the original flat state is restored. Then, the upper and lower locking projections 30b are respectively locked in the corresponding locking holes 22a, and the state shown in FIG. 13 is obtained. The photocatalytic filter 30 is thus fixed to the window 23 so as to cover the entire surface thereof.

  Similarly, when the photocatalytic filter 30 is attached to all the windows 23, the state shown in FIG. 8 is obtained.

  The photocatalytic filter 30 is normally attached or detached from the front or rear of the filter frame 22 (that is, the module 20) with the black light 27 removed from the connector 28. When performing from the back of the filter frame 22 (that is, the module 20), the black light 27 may be left attached, but the photocatalytic filter 30 may come into contact with the black light 27 and be damaged at the time of desorption. It is preferable to attach and detach with the black light 27 removed.

  Since the upper and lower beam-like portions of the windows 23 of the filter frame 22 are formed with locking holes 22a penetrating in the vertical direction, as shown in FIG. 14, the cleaning water supply pipe 31 and the cleaning water guide portion 33 are formed. The cleaning water W sent through the flow of water flows into the two locking holes 22a immediately below the cleaning water guiding portion 33, that is, into the two locking holes 22a in the uppermost beam-shaped portion, and the uppermost It flows downward along the surfaces of the two photocatalytic filters 30 mounted on the window 23.

  Since the cleaning water supply pipe 31 is formed with a slit 31c and the cleaning water guide 33 is formed with a slit-shaped opening 33a, the cleaning water W has two locking holes in the uppermost beam-shaped portion. It can flow almost uniformly into the entire interior of 22a. For this reason, due to the superhydrophilicity of the photocatalytic filter 30, the cleaning water W that has passed through the inside of the locking hole 22 a is substantially uniform along the surfaces of the two photocatalytic filters 30 mounted on the uppermost window 23. Can flow down. In this case, instead of the cleaning water guide portion 33 having the slit-shaped opening 33a, a cleaning water guide portion 33 ′ (see FIG. 5C) formed by arranging a plurality of small holes 33a ′ at predetermined intervals is used. The same applies to the case.

  Next, the cleaning water W flows into the two locking holes 22a in the second beam-shaped portion from the top, and along the surfaces of the two photocatalytic filters 30 mounted on the second window 23 from the top. Flow downward. Subsequently, it flows into the inside of the two locking holes 22a in the third beam-like portion from the top, and flows downward along the surfaces of the two photocatalytic filters 30 mounted on the third window 23 from the top. . Furthermore, it flows into the inside of the two locking holes 22a in the fourth beam-like portion from the top, and goes down along the surfaces of the two photocatalytic filters 30 mounted on the fourth (lowest) window 23 from the top. To flow. Finally, it passes through the two locking holes 22a in the fifth (that is, the lowest) beam-like portion from the top, enters the wash water storage portion 32 below, and is temporarily stored there.

  Since the photocatalytic filter 30 has “superhydrophilicity”, the washing water W flowing on the surface of the photocatalyst filter 30 becomes familiar without being repelled at all. For this reason, the self-cleaning function of the photocatalyst filter 30 is exhibited, and furthermore, harmful deposits (catalyst poisons) present on the surface of the photocatalytic filter 30 are often water-soluble. Will be washed away automatically. As a result, the photocatalytic filter 30 is washed in the mounted state, and its ability is restored.

  In addition, since the cleaning water W smoothly flows on the surface of the photocatalytic filter 30 due to super hydrophilicity, even if eight photocatalytic filters 30 are arranged in four stages in the module 20 as shown in FIG. Washing water W is reliably supplied from the uppermost photocatalytic filter 30 to the lowermost photocatalytic filter 30 only by supplying and dropping the washing water W via the washing water supply pipe 31 and the washing water guiding portion 33 provided at the upper end of 20. can do.

(Cover member of the first embodiment)
Next, the lid member 35 provided at the drain outlet 21a at the bottom of the washing water storage unit 32 will be described with reference to FIGS.

  The lid member 35 has the configuration shown in FIGS. 16 (a) and 16 (b). That is, the lid member 35 is formed of a substantially rectangular rigid plate bent by a linear bent portion 35c, and one (here, the right side) is the first portion 35a and the other (right side) with the bent portion 35c as a boundary. Here, the left side) is the second portion 35b. Since the lid member 35 is bent at a right angle twice at the bent portion 35c, the first portion 35a and the second portion 35b are stepped as shown in FIG. The first portion 35a and the second portion 35b are substantially parallel.

  As shown in FIG. 17, the lid member 35 is inserted into a slit 21b formed at the bottom of the module main body 21, and is engaged with the bottom of the module main body 21 at a bent portion 35c so as to be swingable. The first portion 35a is located on the upper side, that is, inside the cleaning water reservoir 32 (module body 21), and the second portion 35b is located on the lower side, that is, outside the cleaning water reservoir 32 (module body 21). The lid member 35 swings around the bent portion 35c based on the seesaw principle about the bent portion 35c. That is, with the bent portion 35c as an axis, when the first portion 35a is displaced upward, the second portion 35b is displaced downward, and when the first portion 35a is displaced downward, the second portion 35b is displaced upward.

  By the operation of the lid member 35 having the shape and configuration as described above, the drain port 21a is automatically opened and closed as follows.

  That is, before the cleaning water W is stored in the cleaning water storage section 32, the first portion 35a and the second portion 35b of the lid member 35 are substantially the same as the bottom of the module main body 21, as shown in FIG. In the parallel state, the second portion 35b of the lid member 35 is abutted from below so as to cover the entire drain outlet 21a. In this state, the drain port 21 a is closed by the second portion 35 b of the lid member 35. This is because the weight of the second portion 35b is greater than that of the first portion 35a.

  As shown in FIG. 15A, the bottom wall of the module main body 21 surrounding the drain port 21a is slightly curved downward, so that a small substantially circular recess is formed inside the drain port 21a. This depression is used as a washing water reservoir.

  When the cleaning water W starts to be stored in the cleaning water storage section 32, the cleaning water W gradually accumulates in a recess inside the drain port 21a as shown in FIG. 15 (b). This is because the bottom wall of the module main body 21 is provided with a small slope, and the cleaning water W is designed to collect at the drain outlet 21a.

  When the storage amount of the cleaning water W in the recess (the cleaning water reservoir) inside the drain port 21a does not reach a predetermined amount, that is, during the cleaning water storage, the state is maintained as in FIG. That is, as shown in FIG. 15B, the first portion 35 a and the second portion 35 b of the lid member 35 are substantially parallel to the bottom of the module main body 21, and the drain port 21 a is the first portion of the lid member 35. The two parts 35b remain closed. This is because in this state, the sum of the weight of the cleaning water W stored in the cleaning water reservoir and the weight of the second portion is smaller than or equal to the weight of the first portion.

  When the storage amount of the cleaning water W in the cleaning water storage unit 32 reaches a predetermined amount, that is, the sum of the weight of the cleaning water W stored in the cleaning water reservoir and the weight of the second portion is the weight of the first portion. If it becomes larger, as shown in FIG. 15C, the second portion 35b is pushed down, so that the drain port 21a is opened. For this reason, the cleaning water W stored in the cleaning water reservoir is discharged to the outside of the photocatalytic filter module 20 through the drain port 21a.

  When the discharge of the washing water W is completed, the second portion 35b automatically returns to the horizontal state due to the difference between the weight of the second portion and the weight of the first portion, and the drain port 21a is closed again. Return to the state of a).

  In FIG. 15B, the cleaning water W is stored only in the cleaning water reservoir, and the state in which the cleaning water W does not exist on the bottom wall of the module main body 21 is illustrated. A small amount of washing water W may also be present on the top. In this case, the drain port 21a is opened and closed by the same principle.

  As the material used for the lid member 35, stainless steel that is not deteriorated by ultraviolet rays is preferably used, like the module main body 21 and the filter frame 22.

  A small part of the cleaning water W stored in the cleaning water storage section 32 may leak to the outside from the slit 21b, but this does not hinder the operation of the lid member 35.

(Photocatalytic filter / module group of the first embodiment)
In the photocatalyst deodorization apparatus of the first embodiment, as shown in FIGS. 1 and 2, five photocatalyst filter modules 20 having the above-described configuration, that is, a photocatalyst filter module group 20B are incorporated.

  A photocatalyst filter 30 and a black light 27 are attached to the modules 20 other than the module group 20B at the most upstream end (frontmost in FIG. 1), that is, the photocatalyst filter module group 20A. Since the modules 20 in the module group 20B are overlapped with each other during operation (see FIG. 1), the black light 27 of the module 20 at the most downstream end is equal to the photocatalytic filter 30 of the module 20 and one more from it. The photocatalytic filter 30 of the module 20 on the upstream side is irradiated with ultraviolet light. The black light 27 of the module 20 that is one upstream from the most downstream end irradiates the photocatalytic filter 30 of the module 20 and the photocatalytic filter 30 of the module 20 that is one upstream of the module 20 with ultraviolet light. . The black light 27 of the module 20 that is two upstream from the most downstream end irradiates the photocatalytic filter 30 of the module 20 and the photocatalytic filter 30 of the module 20 that is one upstream of the module 20 with ultraviolet light. . The black light 27 of the module 20 that is three upstream from the most downstream end irradiates the photocatalytic filter 30 of the module 20 and the photocatalytic filter 30 of the module 20 that is one upstream of the module 20 with ultraviolet light. . Thus, since the ultraviolet light emitted from the black light 27 in one module 20 is irradiated to the photocatalytic filters 30 on both sides of the black light 27, the ultraviolet light can be used effectively. There is an advantage.

  Unlike the other modules 20, only the photocatalytic filter 30 is attached to the module 20 at the most upstream end (frontmost in FIG. 1), and the black light 27 is not attached. This is because the black light 27 attached to the module 20 is disposed upstream of the photocatalytic filter 30 in the module 20 and is therefore exposed to the outside upstream of the module group 20B. This is because the ultraviolet light emitted from the laser beam has an unfavorable influence on the worker who performs the maintenance work. Since the modules 20 other than the module 20 at the most upstream end do not have such a problem, both the photocatalytic filter 30 and the black light 27 are mounted in consideration of the irradiation efficiency of ultraviolet light.

  During operation of the photocatalyst deodorizing apparatus 1 of the first embodiment, the five photocatalyst filter modules 20 in the photocatalyst filter module group 20B are in a state of being overlapped with each other. In this state, the cleaning water supply pipes 31 of the modules 20 are connected to each other. This point will be described with reference to FIGS. 18 and 4. FIG.

  As shown in FIGS. 4A and 4B, the washing water supply pipe 31 of each photocatalytic filter module 20 is orthogonal to the module 20 and the first portion 31 a extending along the upper edge of the module 20. And a second portion 31b. The second portion 31b has an upstream opening 31ba and a downstream opening 31bb. The total length of the second portion 31b matches the thickness of the module 20, and in the state where the five modules 20 are overlaid, as shown in FIG. The side openings 31ba are coupled to each other so as to face the downstream openings 31bb of the modules 20 adjacent to the upstream side. Since the connecting portion between the upstream opening 31ba and the downstream opening 31bb thus connected is sealed by an O-ring (not shown), the washing water W does not leak from there.

  The upstream opening 31ba of the module 20 on the most upstream side (left end in FIG. 18) is closed by a closing member 31e so that the washing water W does not leak from there. The downstream opening 31bb of the module 20 on the most downstream side (the right end in FIG. 18) is connected to the distal end opening of the connecting pipe 34 provided in the module support 11. Since the connecting portion between the downstream opening 31bb and the tip opening of the connecting pipe 34 thus connected to each other is also sealed by an O-ring (not shown), the washing water W does not leak from there.

  Since the cleaning water supply pipes 31 of the five modules 20 stacked on each other are connected to each other in this way and connected to the connecting pipe 34, the cleaning water W supplied from the outside through the connecting pipe 34 is In each of the modules 20, the module 20 is sent to the locking holes 22 a of the filter frame 22 through the cleaning water supply pipe 31 and the cleaning water guide 33. Thereafter, it flows down the surface of each photocatalytic filter 30 in order, and is collected and stored in the washing water storage section 32. This point is as described above with reference to FIG.

  In the photocatalyst deodorization apparatus 1 according to the first embodiment, the photocatalyst filter module group 20A having the above configuration includes a translation mechanism for translating it, as shown in FIGS. Along with the module support 11 and the rail support 13 for holding and fixing the slide rail 12 included in the moving mechanism, the slide rail 12 is installed inside the casing 10.

  The casing 10 has a rectangular parallelepiped box shape and is fixed on the base 14. Formed on the upper wall of the casing 10 are a gas inlet 15 for introducing the gas to be processed into the casing 10 and a gas outlet 16 for discharging the gas to be processed from the casing 10. The module support 11 and the gas discharge port 16 are connected to each other by a duct 17. Needless to say, the positions of the gas inlet 15 and the gas outlet 16 are not limited to those shown here, and can be set as desired.

  For example, when other devices are arranged on the front and rear sides of the casing 10 (on the side of the rail support 13 and the side of the module support 11), the gas inlet 15 and the gas outlet 16 are connected to any side wall of the casing 10 ( It may be provided on the left or right wall in FIG.

(Use status of the photocatalyst deodorization apparatus of the first embodiment)
Next, the use situation of the photocatalyst deodorization apparatus 1 of 1st Embodiment which has the structure described above is demonstrated.

  During operation, as shown in FIGS. 19 and 21, the module group 20 </ b> B is brought close to and brought into contact with the module support 11 (the right side in FIG. 19). In this state, a standby space S1 is formed between the module group 20B and the rail support 13.

  In this state, the gas to be treated introduced into the casing 10 (primary space) from the gas inlet 15 is directed from the rail support 13 side (upstream side) toward the module support 11 side (downstream side). The module group 20B passes through the module group 20B in a direction perpendicular to the module group 20B and enters the module support 11. The gas to be treated is deodorized by the photocatalytic filter 30 inside the module group 20B while passing through the module group 20B. The treated gas deodorized in this way is discharged from the module support 11 through the duct 17 and the gas discharge port 16 to the outside (secondary space) of the casing 10.

  In the first embodiment, since the five modules 20 are arranged adjacent to each other in the casing 10 having the gas inlet 15 and the gas outlet 16, the filtering effect by the photocatalytic filter 30 is easily increased. There is an advantage that you can.

  During maintenance, the introduction of the gas to be processed into the casing 10 is stopped. When the maintenance work is cleaning of the photocatalyst filter 30, as described above with reference to FIG. 14, the cleaning is automatically performed only by supplying the cleaning water W from the outside to the cleaning water supply pipe 31. The operator does not need to do any other work.

  When the maintenance work is other than the cleaning of the photocatalytic filter 30, the worker enters the casing 10 through a door (not shown) provided on one side wall of the casing 10 and performs the maintenance work of the module 20.

  First, when inspecting the module 20 on the most upstream side in the module group 20B, the translation of the module group 20B is not necessary. That is, the maintenance work of the photocatalyst filter 30 can be performed while keeping the module group 20B in the same state as that during operation (see FIG. 19). This is because maintenance work can be performed using the standby space S1 as the maintenance space S2, and the black light 27 is not attached to the module 20. When inspecting the module 20 from the downstream side, it is necessary to translate the module 20 to the upstream side.

  When inspecting a module 20 other than the module 20 on the most upstream side, if necessary, at least one module 20 on the upstream side of the module 20 to be inspected in the module group 20B is manually upstream. Must be translated to Since the operations when inspecting the modules 20 other than the module 20 on the most upstream side are the same, here, as shown in FIG. 20, the module 20 to be inspected is located downstream in the module group 20B. The case of the third module 20 from the side will be described.

  The operator manually translates the two modules 20 upstream of the module 20 to be inspected toward the upstream side. Then, as shown in FIG. 20, since the maintenance space S2 is formed in the vicinity of the upstream side of the module 20 to be inspected, maintenance work (for example, inspection / replacement of the photocatalytic filter 30 or the like) is performed using the maintenance space S2. Check and replace the black light 27). In this state, maintenance work (for example, inspection of the photocatalytic filter 30) can be performed from the downstream side (back side) of the adjacent module 20 on the upstream side of the module 20 to be inspected.

  In the first embodiment, since the pulley 26 that rotates on the slide rail 12 is used as the translation mechanism, even if the scale and weight of the module 20 are large, the operator can easily translate it alone. Can do.

  In addition, the module 20 is supported in the casing 10 by a translation mechanism including the slide rail 12, the module support 11, and the rail support 13, and can be translated along the gas flow direction. When the photocatalytic filter 30 and the black light 27 in the module 20 are inspected and replaced, the other modules 20 on the upstream side of the module 20 that needs to be inspected and replaced are translated to the upstream side as necessary. Just do it. Then, a maintenance space S2 is created on the upstream side of the module 20 that needs to be inspected and replaced, and the photocatalytic filter 30 and the black light 27 in the space 20 can be accessed, so that they can be inspected and replaced. Can be easily performed.

  If it is necessary to access the photocatalyst filter 30 or the black light 27 in the module 20 that needs to be inspected / replaced from the downstream side, the module 20 itself is translated to the upstream side, and the maintenance space is located downstream of the module 20 itself. Since S2 occurs, it can be easily inspected, removed and cleaned, and replaced in the same manner as accessing from the upstream side.

  As described above, in the photocatalyst deodorizing apparatus 1 of the first embodiment, the gases to be treated introduced into the casing 10 from the gas inlet 15 are arranged perpendicular to the gas flow direction and adjacent to each other. Then, the light passes through the five photocatalyst filter modules 20 and is deodorized by the photocatalyst filter 30 in the modules 20 and activated by the black light 27 as a light source. The treated gas deodorized is discharged to the outside from the gas discharge port 16 of the casing 10. In this way, the deodorizing process of the gas to be processed is performed.

  Each of the substantially flat photocatalyst filter modules 20 includes eight photocatalyst filters 30 mounted in a substantially vertical direction, and a washing water supply pipe fixed above the photocatalyst filters 30 (that is, the upper end portion of the module 20). 31 and a washing water reservoir 32 provided below the photocatalytic filters 30 (that is, the lower end of the module 20). When the cleaning water W is supplied from the outside to the cleaning water supply pipe 31, the cleaning water W falls through the slit 31c of the cleaning water supply pipe 31 and enters the cleaning water guide 33, and then the cleaning water guide After naturally falling toward the photocatalytic filter 30 through the opening 33 a of 33, it flows down along the surface of the photocatalytic filter 30. The cleaning water W after flowing along the photocatalytic filter 30 is temporarily stored in the cleaning water storage unit 32. Then, when the stored washing water W reaches a predetermined amount, the lid member 35 is opened and discharged from the drain port 21a.

  For this reason, when the washing water W flows down along the surface of the photocatalytic filter 30, the self-cleaning function due to the superhydrophilic property of the photocatalytic filter 30 is exhibited, and harmful deposits present on the surface of the photocatalytic filter 30. Since (catalyst poison) is often water-soluble, most of the harmful deposits are automatically washed away by the washing water W. Therefore, at the time of maintenance, by simply supplying cleaning water W from the outside, the photocatalyst filter 30 can be cleaned and recovered its ability without being removed from its mounting location (that is, while being mounted).

  The components necessary for cleaning the photocatalyst filter 30 are configured so that the photocatalyst filter module 20 including the photocatalyst filter 30 mounted in a substantially vertical direction and the cleaning water W naturally drop toward the photocatalyst filter 30. The cleaning water supply pipe 31 and the cleaning water guide section 33, the cleaning water storage section 32 for temporarily storing the cleaning water W after flowing along the photocatalytic filter 30, and the cleaning water storage section 32 are provided. Since only the drain port 21a and the lid member 35 are sufficient, it can be realized with a simple configuration.

  In the photocatalyst deodorization apparatus 1 of the first embodiment, the following effects are further obtained.

  First, the cleaning water supply pipe 31 has a first portion 31 a extending along the module 20 above the photocatalytic filter 30 and a second portion 31 b extending in a direction substantially orthogonal to the module 20. The opening of the cleaning water supply pipe 31 is formed in the first part 31a as a slit 31c, and the second part 31b is connected to the external connection pipe 34 or the second part 31b of the cleaning water supply pipe 31 of the other module 20 It is possible. For this reason, it is easy to supply the cleaning water W to the cleaning water supply pipe 31 from the outside, and to easily flow the cleaning water W uniformly throughout the photocatalytic filter 30.

  Second, the lid member 35 is attached to the bottom of the module 20 in a state of being inserted into a gap formed in the vicinity of the drain port 21a, that is, the slit 21b, and is located in the cleaning water storage unit 32. It has the part 35a and the 2nd part 35b located in the exterior of the washing water storage part 32, and it is comprised so that this drain port 21a may be closed by covering the drain port 21a with the 2nd part 35b. . For this reason, it is only necessary to adjust the relationship between the area ratio of the first portion 35a inside the cleaning water reservoir 32 and the second portion 35b outside the cleaning water reservoir 32 and the area of the drain port 21a. When the amount of the cleaning water W stored in the depression (cleaning water reservoir) inside the drain port 21a reaches a predetermined amount, the lid member 35 is automatically opened and discharged from the drain port 21a. it can.

  Third, the lid member 35 is formed of a rigid plate bent at the boundary between the first portion 35a and the second portion 35b, and the bent portion 35d is slidably engaged with the slit 21b. The lid member 35 can be easily formed, and the lid member 35 can be easily attached to the cleaning water reservoir 32.

  Fourthly, the module 20 is arranged in a substantially vertical direction and supported by the translation mechanism so as to be able to translate in the horizontal direction, so that the module 20 is horizontally arranged in the vertical direction. It is easy to translate in the direction. Therefore, in addition to being able to clean the photocatalytic filter 30 during maintenance, maintenance work other than cleaning of the photocatalytic filter 30 such as inspection and replacement of the photocatalytic filter 30 (or the black light 27 attached to the module 20) is easily performed. be able to.

  Even when the module 20 (or the photocatalytic filter unit or the light source unit) is enlarged to such an extent that the operator cannot easily move it manually, the photocatalytic filter 30 or the black light 27 can be inspected and replaced. Maintenance work other than cleaning can be performed by an operator alone.

  The photocatalyst filter module 20 usually includes a photocatalyst filter and a light source. However, the photocatalyst filter module 20 only needs to include at least one photocatalyst filter, and may not include a light source. When a light source is not included, the photocatalyst filter module is equivalent to the photocatalyst filter unit of Patent Document 2 cited in the background art, except that it does not have a washing water supply pipe, a washing water reservoir, and the like. It becomes a composition.

  Needless to say, the structure of the casing 10 and the positions of the gas inlet 15 and the gas outlet 16 are not limited to those shown here. For example, the side wall facing the module support 11 of the casing 10 may be omitted, and the module support 11 itself may be used as the side wall. In this case, the gas discharge port 16 can be formed in the module support 11.

  In addition, a partition (partition) that partitions the primary side space to which the pre-treatment gas is supplied and the secondary side space to which the post-treatment gas is sent is provided with a window (opening) through which the gas filtered by the photocatalytic filter 30 passes. Can also be used as the casing 10. In this case, the partition wall may be used as the module support 11, the gas inlet 15 may be provided in the primary space, and the partition window (opening) may be used as the gas outlet 16. The secondary side space is formed on the downstream side of the partition wall window (gas exhaust port 16).

(Photocatalyst deodorization apparatus of 2nd Embodiment)
The outline of the whole structure of the photocatalyst deodorizing apparatus 1A according to the second embodiment of the present invention is shown in FIGS.

  The configuration of the photocatalyst deodorizing apparatus 1A of the second embodiment is provided with a removable door 10Aa on the opposite side of the module support 11 of the casing 10A for space saving, and the door 10Aa is removed during maintenance, It is the same as that of the photocatalyst deodorizing apparatus 1 according to the first embodiment described above, except that the space for maintenance S2 is generated using a space (passage or the like) outside the casing 10A. Therefore, the same code | symbol as the photocatalyst deodorizing apparatus 1 which concerns on 1st Embodiment is attached | subjected to the part and element with the same structure, and the description is abbreviate | omitted.

  The state during operation of the photocatalyst deodorization apparatus 1A of the second embodiment is as shown in FIG. 22, and the photocatalyst deodorization according to the first embodiment is performed except that the standby space S1 does not exist inside the casing 10A. It is the same as that of the device 1. That is, the length in the gas flow direction of the casing 10A is only slightly larger than the sum of the lengths in the same direction of the module support 11 and the five photocatalytic filter modules 20 (photocatalytic filter module group 20B). 10Aa is provided close to the module 20 at the most upstream position. For this reason, compared with the photocatalyst deodorizing apparatus 1 of the first embodiment, the space is saved by the standby space S1.

  When performing work other than cleaning of the photocatalytic filter 30 during maintenance, the following work is performed.

  First, the door 10Aa of the casing 10A is removed. Then, since the portion where the door 10Aa was located opens, as shown in FIG. 23, one end of the auxiliary slide rail 37 is connected to the upstream end of the slide rail 12, and the other end is supported by the auxiliary rail support 36. . The auxiliary rail support 36 is installed at an appropriate location in a space adjacent to and adjacent to the portion where the door 10Aa is attached. The auxiliary slide rail 37 protrudes in the horizontal direction from the opening generated in the portion where the door 10Aa was attached. The configuration of the auxiliary slide rail 37 is the same as the configuration of the slide rail 12.

  When the module 20 to be inspected is the third module 20 from the downstream side in the module group 20B, the operator manually sets the two modules 20 upstream of the module 20 to be inspected to the upstream side. Translate towards. At this time, the two modules 20 are located outside the casing 10A as shown in FIG. As a result of this translational movement, a maintenance space S2 is formed in the vicinity of the upstream side of the module 20 to be inspected, as in the first embodiment. Therefore, maintenance work (for example, the photocatalytic filter 30 of the photocatalytic filter 30) is made using the maintenance space S2. Inspection / replacement and inspection / replacement of the black light 27). In this state, maintenance work (for example, inspection of the photocatalytic filter 30) can be performed from the downstream side (back side) of the adjacent module 20 on the upstream side of the module 20 to be inspected.

  When the maintenance work is completed, the door 10Aa is reattached to the corresponding part of the casing 10A, and the opening is closed. Thereafter, the operation of the photocatalyst deodorization apparatus 1A is started.

  As described above, the photocatalyst deodorizing apparatus 1A of the second embodiment is provided with the removable door 10Aa on the opposite side of the module support 11 of the casing 10A, and the door 10Aa is removed during maintenance to remove the casing 10A. Since it is the same as that of the photocatalyst deodorizing apparatus 1 according to the first embodiment described above except that the space S2 for maintenance is generated by using the space (passage etc.) on the outside, the first implementation In addition to the same effect as the photocatalyst deodorizing apparatus 1 according to the embodiment, there is an effect that space saving can be achieved by the amount corresponding to the standby space S1 existing inside the casing 10 in the first embodiment.

(Cleaning confirmation test)
In order to confirm the effect of the present invention, a cleaning confirmation test of the photocatalytic filter was performed in the following manner.

First, a photocatalyst deodorizing apparatus 1 according to the first embodiment described above using a 300 mm × 300 mm (area = 0.09 m ² ) square photocatalytic filter (a surface of a porous ceramic substrate coated with titanium oxide). An actual machine with the same configuration was manufactured. And when the ammonia concentration was actually measured on site, it was 0.64 mg / m ³ .

  Therefore, as shown in FIG. 24, the photocatalytic filter, the black light, and the fan were installed in a sealed box, and then an amount of ammonia corresponding to one year was supplied into the box. The air containing ammonia was blown onto the photocatalytic filter at a wind speed of 0.92 m / s. Then, while operating the black light and irradiating the photocatalytic filter with ultraviolet light, the fan was driven to flow the air in the box. The driving of the black light and the fan was continued until ammonia was not detected in the box. In this way, a photocatalytic filter contaminated with an amount of ammonia corresponding to one year was manufactured and used as a cleaning test sample.

The amount of ammonia corresponding to one year (= 334.2 g) was calculated as follows. That is, if cleaning of the photocatalyst filter is performed once a year, the air volume per photocatalyst filter of the photocatalyst deodorizing apparatus 1 of the first embodiment described above is 0.92 m / s × 0.09 m ² × 3600 = Since 298.08 m ³ / h, the ammonia load for one year is 298.08 m ³ /h×24×365×0.64/1000=1671 g / year. In the photocatalyst deodorizing apparatus 1 of the first embodiment, considering that the photocatalyst filter modules are stacked in five stages, the ammonia load amount per photocatalyst filter is 1671 ÷ 5 = 334.2 g / year. .

  The cleaning confirmation test was performed as follows. First, an actual small scale (1/200) of the photocatalyst deodorizing apparatus 1 was manufactured, and a cleaning water supply / recovery mechanism as shown in FIG. 25 was manufactured.

The relationship between the actual machine and the small scale was as shown in FIG. That is, the number of cleaning of the photocatalyst filter at one time is 200 for the actual machine, the small scale is 1 sheet, and the amount of cleaning water supplied to the photocatalyst filter is 45 L (liter) for the actual machine = 9 m ³ / h. ) / H, the circulation flow rate of the ion exchange resin is small scale = 20 L / h for the actual machine = 4 m ³ / h, and the retained amount of the washing water recovery tank is small scale = 20 L for the actual machine = 4 m ³ The estimated amount of ion-exchange resin necessary for the test was set to a small scale = 0.143L against an actual machine = 28.5L.

  In this small scale, as shown in FIG. 25, a cleaning water supply pipe is arranged above one photocatalytic filter so that the cleaning water falls from the slit toward the photocatalytic filter. The cleaning water was supplied to the cleaning water supply pipe at a flow rate of 45 L / h. In addition, the wash water dropped toward the photocatalyst filter flows along the surface of the photocatalyst filter, and then is collected in the wash water storage portion disposed below the photocatalyst filter, and is discharged from the drain port provided in the wash water storage portion. It was dropped and collected in a washing water recovery tank installed below it. The cleaning water recovered in the cleaning water recovery tank in this way is supplied again to the cleaning water supply pipe.

  The ion exchange resin cylinder is filled with an ion exchange resin called Duolite MBGP, and a part of the washing water is circulated from the washing water recovery tank to the ion exchange resin cylinder → the washing water collection tank at a flow rate of 20 L / h. I made it flow. The amount of ion exchange resin accommodated in the ion exchange resin cylinder was 0.143L.

  In the small scale having the cleaning water supply / recovery mechanism as shown in FIG. 25, the electrical conductivity of the cleaning water in the cleaning water recovery tank was measured and changed as shown in FIG. Then, when the electrical conductivity of the cleaning water in the cleaning water recovery tank reached 50 μS / cm, the acetaldehyde removal rate was measured, and the result shown in FIG. 27 was obtained. From the table in FIG. 27, it was found that the removal rate of acetaldehyde was recovered before and after washing. As a result, it was confirmed that the small-scale photocatalytic filter was washed with washing water, and harmful deposits on the surface were washed away.

  From FIG. 26, the electrical conductivity of the cleaning water reached 50 μS / cm when the cleaning time reached about 5.5 hours. For this reason, it was confirmed that if the cleaning time is set to 8 hours, the photocatalytic filter can be cleaned not only with the small scale but also with the actual machine. Further, it was estimated that 0.143 L was sufficient for the amount of ion-exchange resin required per photocatalyst filter.

(Modification)
The first and second embodiments described above show examples embodying the present invention. Accordingly, the present invention is not limited to these embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the black light 27 is used as a light source for activating the photocatalytic filter 30, but it goes without saying that a light source other than the black light 27 may be used. Further, the photocatalytic filter 23 formed by coating porous ceramic with titanium oxide (TiSO ₂ ) is used. However, a photocatalyst other than titanium oxide may be used, and the base of the photocatalytic filter 23 is not porous ceramic. Needless to say, it may be formed of any material.

  Further, the present invention is preferably applied to a photocatalytic device having a large scale and weight, but can also be applied to a small-sized photocatalytic device.

  Furthermore, although the said embodiment has shown the case where this invention is applied to a photocatalyst deodorizing apparatus, this invention is not limited to this. Any photocatalytic device provided with a photocatalytic filter can be applied to photocatalytic devices other than the photocatalytic deodorizing device, for example, photocatalytic sterilization (antibacterial) devices, photocatalytic purification devices, and the like.

  As the cleaning liquid, pure water is used, but any liquid other than pure water can be used as long as the photocatalytic filter can be cleaned to recover its ability.

DESCRIPTION OF SYMBOLS 1 Photocatalyst deodorizing apparatus 1A Photocatalyst deodorizing apparatus 10 Casing 10A Casing 10Aa Door 11 Module support body 12 Slide rail 12a Slide rail concave groove 13 Rail support body 14 Base 15 Gas introduction port 16 Gas discharge port 17 Duct 20 Photocatalytic filter module 20A Photocatalyst Filter module group 20B Photocatalyst filter module group 21 Module body 21a Drain port 21b Slit 22 Filter frame 22a Locking hole 23 Photocatalyst filter mounting window 24 Engagement member 25 Rotating shaft 26 Pulley 27 Black light 28 Connector 28a Connector holding member 29 Inverter 30 Photocatalytic filter 30a Filter body 30b Locking protrusion 31 Washing water supply pipe 31a First part 31b Second part 31ba Upstream opening 31bb Downstream opening 31c 31d Closing part 31e Closing member 32 Washing water storage part 33 Washing water guide part 33a Opening 34 Connecting pipe 35 Lid member 35a First part 35b Second part 35c Bending part 36 Auxiliary rail support 37 Auxiliary slide rail R1 31 Washing water Water supply possible range R2 of the supply pipe Water supply possible range of the washing water guide S1 Standby space S2 Maintenance space W Washing water

Claims (11)

A substantially flat photocatalytic filter module including a photocatalytic filter mounted in a substantially vertical direction;
A cleaning liquid supply pipe having an opening, fixed to the photocatalytic filter module above the photocatalytic filter;
A discharge port provided in the photocatalytic filter module below the photocatalytic filter,
The cleaning liquid supply pipe has a first portion extending along the photocatalytic filter module above the photocatalytic filter and a second portion extending in a direction substantially perpendicular to the photocatalytic filter module. And
The opening of the cleaning liquid supply pipe is formed in the first part, and the second part can be connected to an external communication pipe or a second part of the cleaning liquid supply pipe of another photocatalytic filter module,
When supplying the cleaning liquid from the outside to the cleaning liquid supply pipe, the cleaning liquid falls from the opening of the cleaning liquid supply pipe toward the photocatalytic filter and flows along the photocatalytic filter,
The photocatalyst apparatus configured to discharge the cleaning liquid after flowing along the photocatalytic filter from the discharge port to the outside of the photocatalytic filter module. A substantially flat photocatalytic filter module including a photocatalytic filter mounted in a substantially vertical direction;
Fixed to the photocatalytic filter module above the photocatalytic filter,
A cleaning liquid supply pipe having an opening;
A discharge port provided in the photocatalytic filter module below the photocatalytic filter;
A cleaning liquid reservoir provided in the photocatalytic filter module below the photocatalytic filter,
A lid member attached to the outlet,
The lid member is configured to be opened and discharge the cleaning liquid to the outside when the cleaning liquid temporarily stored in the cleaning liquid storage unit reaches a predetermined amount.
When supplying the cleaning liquid from the outside to the cleaning liquid supply pipe, the cleaning liquid falls from the opening of the cleaning liquid supply pipe toward the photocatalytic filter and flows along the photocatalytic filter,
The photocatalyst apparatus configured to discharge the cleaning liquid after flowing along the photocatalytic filter from the discharge port to the outside of the photocatalytic filter module . A cleaning liquid reservoir provided in the photocatalytic filter module below the photocatalytic filter, and a lid member attached to the discharge port,
2. The photocatalytic device according to claim 1 , wherein the lid member is configured to be opened and discharge the cleaning liquid to the outside when the cleaning liquid temporarily stored in the cleaning liquid storage unit reaches a predetermined amount. Between the cleaning liquid supply pipe and the photocatalytic filter, a cleaning liquid guide having an opening on the bottom surface is disposed,
Claims wherein the cleaning liquid dropped from the opening of the cleaning liquid supply tube, said after being temporarily stored in the cleaning liquid guide unit, through an opening of the cleaning liquid guide portion is configured so as to fall toward the photocatalyst filter Item 4. The photocatalytic device according to any one of Items 1 to 3. A first portion that is attached to the photocatalytic filter module in a state where the lid member is inserted into a gap formed in the vicinity of the discharge port, and is located inside the cleaning liquid storage section; and the cleaning liquid storage section And a second part located outside the
The photocatalyst apparatus of Claim 3 or 4 comprised so that the said discharge port may be closed by the said 2nd part.   The lid member is formed of a rigid plate bent at a boundary between the first portion and the second portion, and a bent portion of the lid member is swingably engaged with the gap. The photocatalyst apparatus of any one of 3-5.   The photocatalyst according to any one of claims 1 to 6, wherein the photocatalyst filter module is arranged in a substantially vertical direction and is supported in a state in which it can be translated in a substantially horizontal direction by a translational movement mechanism. apparatus.   The photocatalyst apparatus according to claim 7, wherein a plurality of the photocatalytic filter modules are disposed adjacent to each other in the casing. The translation mechanism is spanned between a first support and a second support provided on the upstream side and the downstream side in the gas flow direction, respectively, and the first support and the second support. Including slide rails,
9. The photocatalytic device according to claim 8, wherein one or a plurality of the photocatalytic filter modules are supported so as to be able to translate in a state of being suspended from the slide rail.   The photocatalyst device according to claim 9, wherein both a standby space and a maintenance space are formed inside the casing.   A standby space is formed outside the casing, and a predetermined portion of the casing is openable. During maintenance, the predetermined portion is opened, and the photocatalytic filter module is placed in the standby space. The photocatalytic device according to claim 9, wherein the photocatalytic device is capable of translational movement.

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