JP2003070885A - Photocatalytic deodorizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small photocatalytic deodorizer which achieves a small size with a significant curtailment of the necessary space of a tubular light source and facilitates maintenance in the replacement of parts or the like by maintaining a longer life and a higher efficiency of filters and sufficient activities of photocatalysts carried on a deodorizing filter. SOLUTION: The photocatalytic deodorizer has an air purifying part detachably arranged thereon. In the air purifying part, a dust collection filter made in pleats, a deodorizing filter made in pleats with photocatalysts carried thereon and a tubular light source 35 that irradiates light for the activation of the photocatalysts are arranged as to be laid sequentially on an air path in which the stream of air is formed toward a clean air discharge port from an air intake or the dust collection filter, the tubular light source 35 and the deodorizing filter 33 are so arranged as to be laid sequentially thereon. The deodorizing filter 33 is provided with a hollow 70 to let the tubular light source 35 be buried in the direction of crossing the peaks and troughs of the pleats and the tubular light source 35 is installed so as to irradiate entirely one side of the deodorizing filter 33 within the hollow 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photocatalytic deodorizing device having an air cleaning function of removing contaminants in indoor air for cleaning and a deodorizing function of a photocatalyst, and particularly to a thin type installed in an air conditioning system for vehicles. The present invention relates to a photocatalytic deodorizing device.

[0002]

2. Description of the Related Art Air purifiers have been developed in order to remove odors and dust inside vehicles, but miniaturization and thinning are desired. In Japanese Unexamined Patent Publication No. 9-322933, a cylindrical lamp is arranged on the side surface of the deodorizing filter to reduce the thickness in the direction of the ventilation passage. However, the technique disclosed in the above publication requires a space for disposing the cylindrical lamp on the side portion of the deodorizing filter, resulting in an increase in size. Further, the air flow is easily bypassed (short circuit) between the deodorizing filter and the cylindrical lamp, and the dust collection effect is reduced.

In Japanese Patent Laid-Open No. 11-314017, a thin air cleaner is provided as a deodorizing technique by irradiating a photocatalyst, particularly a titanium oxide catalyst, with ultraviolet rays of about 360 to 400 nm emitted from a light emitting diode. The device collects dust before deodorizing.

Further, Japanese Unexamined Patent Publication No. 9-253451 discloses an air purifying apparatus for automobiles, in which an electrodeless discharge lamp is caused to emit light by microwaves, and the photocatalyst is irradiated with ultraviolet rays to emit carbon monoxide by a CO oxidation catalyst. It is oxidizing.
In the publication, a Pd catalyst or a titanium oxide catalyst is supported on an activated carbon fiber as an adsorbent, and a filter folded into a pleat shape so as to have a thickness of 50 mm is used to reduce the air permeation rate and reduce the pressure loss. I am letting you.

[0005]

It is considered that when the filter is folded in a pleat shape to increase the filter area, the life of the filter is extended and the dust collection efficiency and the deodorization efficiency are increased. However, it is considered that folding the filter into pleats can extend the life of the dust collecting filter and improve the dust collecting efficiency, while the light that activates the photocatalyst is applied to the entire surface of the deodorizing filter with pleats. Irradiation becomes difficult. Therefore, the deodorizing filter has a portion that does not receive light irradiation and does not sufficiently act as a catalyst, and the deodorizing efficiency is rather reduced. Further, by folding the deodorizing filter into pleats, the thickness of the filter is increased, and since the space for disposing the light irradiation light source is secured, the direction of the air passage becomes thick. Therefore, it is difficult to reduce the size of the entire deodorizing device while ensuring a long service life of the filter and high efficiency of dust collection and deodorizing.

A first object of the present invention is to obtain a device characteristic that the dust collecting filter and the deodorizing filter have a long life and high efficiency, and the photocatalyst carried on the deodorizing filter is sufficiently activated, and then the tubular light source is used. It is to provide a photocatalytic deodorizing device that is compatible with downsizing of the device by drastically reducing the required space.
Another object of the present invention is to provide a photocatalytic deodorizing device that can be easily maintained, such as replacing parts of the dust collecting filter, the deodorizing filter, and the tubular light source.

A second object of the present invention is to irradiate light at a certain intensity or more on any part of the deodorizing filter folded by arranging tubular light sources at both ends of the pleats of the deodorizing filter in the peak and valley directions. By increasing the catalytic activity,
(EN) Provided is a photocatalytic deodorizing device which realizes high efficiency of deodorizing while keeping the size of the device small.

A third object of the present invention is to obtain a device characteristic that the dust collecting filter and the deodorizing filter have a long life and high efficiency, and the photocatalyst carried on the deodorizing filter is sufficiently activated, and then the deodorizing filter is obtained. Second reason for further increase in area
It is an object of the present invention to provide a photocatalytic deodorizing device in which the size of the device is minimized by greatly reducing the space required for the tubular light source even if the deodorizing filter is installed and the second deodorizing filter is additionally installed. Another object of the present invention is to provide a photocatalytic deodorizing device that can be easily maintained, such as replacing parts of the dust collecting filter, the deodorizing filter, and the tubular light source.

A fourth object of the present invention is to install a second deodorizing filter, and then install a tubular light source at both ends of the pleats in either or both of the deodorizing filter and the second deodorizing filter. Even if it is installed to increase the filter area and irradiate light with a certain intensity or more to any part of the deodorizing filter folded in a pleat shape to enhance the catalytic activity and further improve the deodorizing performance, a tubular light source is required. It is to provide a photocatalytic deodorizing device that minimizes the size increase of the device by drastically reducing the space.

A fifth object of the present invention is to propose a concrete form example for preventing the occurrence of a short circuit in the air flow in the recess formed for the purpose of greatly reducing the required space of the tubular light source. Further, it is to provide a photocatalytic deodorizing device in which the filter area is prevented from decreasing by making the recessed portion also play a role as a filter.

A sixth object of the present invention is to provide a photocatalytic deodorizing device which does not use mercury by using a xenon outer electrode lamp as a tubular light source. The photocatalyst lamp uses a mercury lamp, a cathode tube (CF).
L), black light, etc. are used, but the cold cathode tube (CCFL) is the most prevalent. However, in recent years, the use of mercury has been reduced due to environmental pollution problems, and the same measures have been required for ultraviolet lamps. In addition, the xenon external electrode lamp is structurally incapable of 360-degree full-angle emission, but since the emission angle of light can be adjusted, only the deodorizing filter can be efficiently irradiated and deterioration of other members due to ultraviolet irradiation can be prevented. It is also possible to prevent it. That is, a sixth object of the present invention is to provide a catalytic deodorizing device capable of efficiently irradiating only a deodorizing filter without using mercury and preventing deterioration of other members due to ultraviolet irradiation. .

A seventh object of the present invention is to make the length of the tubular light source and the width of the deodorizing filter substantially the same so that the entire surface of the deodorizing filter is irradiated with light and the required space is minimized to make a compact catalytic deodorizing device. Is to provide.

An eighth object of the present invention is to irradiate the deodorizing filter with a light source in which light emitting diode elements which can be made thin and have a small required space are effectively arranged, so that the dust collecting filter and the deodorizing filter have a long life. It is an object of the present invention to provide a photocatalytic deodorizing device that achieves both compactness, high efficiency, and sufficient activation of the photocatalyst supported on the deodorizing filter, and also downsizing of the device. In Japanese Patent Laid-Open No. 11-314017, a light emitting diode that does not use mercury is used as an ultraviolet light source. However, the intensity of ultraviolet light per light emitting diode is weak, and many light emitting diodes must be arranged. That is, in the present invention, by optimizing the positional relationship between the deodorizing filter and the light emitting diode element, the photocatalytic deodorizing device that realizes reliable light irradiation to the deodorizing filter while minimizing the light emitting diode element to be used is provided. The purpose is to Another object of the present invention is to provide a photocatalytic deodorizing device that can be easily maintained such as replacement of dust collecting filters, deodorizing filters, and light source parts.

A ninth object of the present invention is to provide a small-sized photocatalytic deodorizing device of a different form from the above, which uses a light emitting diode element as a light source.

The deodorizing filter, after absorbing the odorous substance,
The photocatalyst decomposes odorous substances and thus extends the life. On the other hand, the life of the dust collecting filter can be extended by extending the area by folding the dust collecting filter, but the life is not extended as compared with the deodorizing filter. Therefore, it is convenient and efficient to separate the dust collecting filter and the deodorizing filter so that they can be replaced separately according to the service life of each filter. Therefore, a tenth object of the present invention is to process the pleated shape of the dust collecting filter so that the dust collecting filter and the deodorizing filter are superposed, and by arranging them so as to be detachably stacked on the deodorizing filter. A photocatalyst in which the dust collection filter and the deodorization filter are separated, and one of the dust collection filters can be replaced, and the thinning equivalent to the case where these filters are integrated while realizing the dust collection filter and the deodorization filter as separate bodies can be realized. The purpose is to provide a deodorizing device.

[0016]

A photocatalytic deodorizing apparatus according to the present invention has a pleated dust collecting filter and a pleated shape in an air passage forming an air flow from an air inlet to a purified air outlet. The deodorizing filter processed and carrying the photocatalyst and the tubular light source for irradiating light for activating the photocatalyst are arranged so as to be sequentially stacked, or the dust collecting filter, the tubular light source and the deodorizing filter are sequentially stacked. Is a photocatalytic deodorizing device in which the air purifying unit configured to be arranged as described above is detachably arranged, wherein the deodorizing filter is provided with a recess in which the tubular light source can be embedded in a direction crossing the peaks and valleys of the pleats. The light source is installed so that the one surface of the deodorizing filter can be entirely illuminated in the depression.

In the present invention, the recess is for embedding the tubular light source in order to make the distance between the deodorizing filter and the tubular light source as close as possible. Therefore, the size and depth of the depression are necessary and sufficient to be able to embed the tubular light source, and the tubular light source cannot be embedded if the size is small or the depth is shallow, while it is large or the depth is deep. It becomes impossible to irradiate light on the entire surface of one side of the deodorizing filter and the narrowing of the filter area. Furthermore, it is important that the depression of the present invention is a depression that does not have a bypass portion that causes air leakage. When the bypass portion is formed to form the depression, it is necessary to close the opening or fold the pleat without forming the opening to form the depression. This is because the deodorization efficiency is reduced if there is a bypass section.

In the photocatalytic deodorizing apparatus according to the present invention, the deodorizing filter is provided with recesses at both ends of the pleats in the peak and valley directions in which the tubular light sources can be embedded, and the tubular light sources have the recesses in the recesses. It is preferable to install the deodorizing filter so that one side can be entirely irradiated.

Further, the photocatalytic deodorizing apparatus according to the present invention has a pleated dust collecting filter in an air passage forming an air flow from the air inlet to the purified air outlet.
A deodorizing filter processed into pleats and carrying a photocatalyst, a tubular light source for irradiating light for activating the photocatalyst, and a second deodorizing filter processed into pleats and carrying a photocatalyst were arranged so as to be sequentially stacked. It is a photocatalytic deodorizing device in which an air purifying unit is detachably arranged, and either or both of the deodorizing filter and the second deodorizing filter can embed the tubular light source in a direction crossing the pleats' peaks and valleys. A hollow is provided, and the tubular light source is installed so that the entire surface of each of the one surface of the deodorizing filter and the facing one surface of the second deodorizing filter can be irradiated in the hollow.

In the photocatalytic deodorizing apparatus according to the present invention, one or both of the deodorizing filter and the second deodorizing filter are provided with recesses in which the tubular light source can be embedded at both ends of the pleats in the peak and valley directions. It is preferable that each of the tubular light sources is installed so as to be able to irradiate the entire surface of each of the one surface of the deodorizing filter and the opposing one surface of the second deodorizing filter in each of the recesses.

Further, in the photocatalytic deodorizing apparatus according to the present invention,
The recess is a notch shape that closes the opening,
Alternatively, the pleat is preferably formed in a folded shape.

Further, in the photocatalytic deodorizing apparatus according to the present invention, it is preferable that the tubular light source is a xenon outer electrode lamp.

In the photocatalytic deodorizing apparatus according to the present invention, it is preferable that the tubular light source has a length substantially equal to the width of the deodorizing filter.

In the photocatalyst deodorizing apparatus according to the present invention, an air passage forming an air flow from the air intake port to the purified air discharge port has a pleated dust collecting filter, a pleated process and a photocatalyst. The deodorizing filter and the light source for irradiating light for activating the photocatalyst are arranged so as to be sequentially stacked, or the dust collecting filter, the light source and the deodorizing filter are arranged so as to be sequentially stacked. A photocatalytic deodorizing device in which a purifying unit is removably arranged, wherein the light source has a configuration in which the light emitting diode elements are arranged on a substrate at intervals at which light emitting diode elements are arranged in each valley of the pleats of the deodorizing filter, In addition, the deodorizing filter is installed so that one side can be entirely irradiated.

In the photocatalyst deodorizing apparatus according to the present invention, the pleated dust collecting filter and the pleats are formed and the photocatalyst is carried in the air passage forming the air flow from the air inlet to the purified air outlet. The deodorizing filters are arranged so that they overlap one another, and the pleats of the deodorizing filter
A photocatalyst deodorizing device in which an air purifying unit configured to dispose a light source for irradiating light for activating the photocatalyst is detachably arranged on both end sides in the valley direction, wherein each of the light sources is a pleated part of the deodorizing filter. The light-emitting diode elements are arranged on the substrate at intervals such that the light-emitting diode elements are arranged in each valley, and the deodorizing filter is installed so that one surface can be entirely illuminated.

In the photocatalyst deodorizing apparatus according to the present invention, the dust collecting filter is formed by processing the pleated shape of the dust collecting filter so as to overlap with the deodorizing filter, and is detachably stacked on the deodorizing filter. It is preferable that they are arranged in line.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below, but the present invention is not construed as being limited to the embodiments described below. [First Embodiment] A photocatalytic deodorizing apparatus according to the present invention will be described with reference to Figs. 1 to 8 and Fig. 13. The same reference numerals are used for the same members. FIG. 1 shows a schematic side view when the photocatalytic deodorizing device according to the present invention is incorporated into a vehicle air conditioner, where (a) is one tubular light source and (b) is two tubular light sources. It is the figure which showed two cases.
The photocatalytic deodorizing device 100 includes an air conditioning device body 10. The air conditioner body 10 has an inside air intake port 10b and an outside air intake port 10c that are opened and closed by a damper 11.
Is formed, an air passage 10d connected to the air intake port 10a, and a purified air discharge port 10f. The blower 20, the filter unit 30, and the evaporator 40 are sequentially provided in the air passage 10d from the upstream side. When the blower 20 is driven, air is taken into the air passage 10d from the open side of the air suction port 10a. After passing through the filter unit 30, this air forms an air stream 10e, which is cooled by the evaporator 40. Then the air mix door
(Not shown), heater (not shown), etc., and is blown out into the vehicle interior.

The filter unit 30 is an air purifying unit, and will be described in detail below with reference to FIGS. 2 to 8. The dust collecting filter is processed into pleats, the deodorizing filter and the photocatalyst are processed into pleats and carry a photocatalyst. It is composed of a tubular light source that irradiates light that activates the deodorizing filter.The deodorizing filter is provided with a recess that can embed the tubular light source in the direction that crosses the pleats' peaks and valleys. Install so that it can be irradiated. The frame of the filter is not shown in FIG.

First, with reference to FIG. 2, the shapes of the dust collecting filter and the deodorizing filter, and the arrangement relationship of the dust collecting filter, the deodorizing filter, and the tubular light source will be described.
2A to 2D are plan views of the filter unit 30 shown by the dotted line in FIG. 1A (views seen from above in FIG. 1A), showing an example of the form of the filter unit. It is a conceptual diagram. 2A to 2D show only the side frame portion and the upper frame portion is not shown in order to explain the shape of the filter. Note that FIG. 2 illustrates the arrangement relationship of the dust collecting filter, the deodorizing filter, and the tubular light source in the air flow direction.
The detailed positional relationship between the tubular light source and the deodorizing filter will be described later.

FIG. 2A is a plan view showing an embodiment of the filter unit, showing a case where the dust collecting filter and the deodorizing filter are integrally joined. In the filter unit 30, the dust collecting filter 32, the deodorizing filter 33, and the tubular light source 35 are arranged in this order toward the downstream of the air flow 10e. The dust collecting filter 32 and the deodorizing filter 33 are formed by folding them in a pleated shape having the same width and the same thickness, and are integrated so as to be overlaid with each other, and are integrally fitted and fixed in a rectangular frame 34 to fix the filter 31. Form. Figure 13
FIG. 1 is a schematic cross-sectional view of a dust collecting filter or a deodorizing filter processed into a pleat shape according to the present invention in a direction across the pleat. The frame is not shown. Here, as shown in FIG. 13, the width of the pleats refers to the folding interval a, and the thickness of the pleats corresponds to the thickness b of the pleated filter. Since the dust collecting filter 32 and the deodorizing filter 33 forming the filter 31 are integrated, they cannot be replaced separately, but they are replaced at the same time. This is a mode in which the filter can be made thin and contributes to downsizing of the device.

FIG. 2 (b) is a plan view showing one form of the filter unit, and shows a case where the dust collecting filter and the deodorizing filter are detachably adjacent to each other or in contact with each other so as to form a multilayer structure. . 2B, the dust collecting filter 32, the deodorizing filter 33, and the tubular light source 35 are arranged in this order toward the downstream of the air flow 10e. The dust collecting filter 32 and the deodorizing filter 33 are formed by folding them into pleats having the same width and the same thickness. But Figure 2
Unlike (a), the dust collecting filter 32 is fitted in the frame 37a, and the deodorizing filter 33 is fitted in the frame 37b and fixed to separate frames. The frame 37a and the frame 37b are detachably integrated by a joining tool (not shown), and the dust collecting filter 32 and the deodorizing filter 33 are adjacent to or in contact with each other so as to be overlaid with each other to form a filter 36. When the dust collecting filter 32 and the deodorizing filter 33 are integrated by a joining tool,
The appearance is similar to that of (a). Further, in addition to the case where the filters are fixed using the separate frames described above, the dust collecting filter 32 and the deodorizing filter 33 are detachably fitted into one frame body (not shown), and the filters are separately replaced. It may be possible. In any case, the dust collection filter 3
If the 2 and the deodorizing filter 33 can be separately exchanged and the filters 36 are formed adjacent to or in contact with each other so as to be superposed, the frame is not limited to a separate body or an integral body. The dust collecting filter and the deodorizing filter can be replaced at an appropriate replacement time, and the thickness of these filters can be reduced to reduce the size of the entire apparatus, which is the most preferable in FIGS. 2 (a) to 2 (d). It is a form.

FIG. 2C is a plan view showing one form of the filter unit, and shows a case where the dust collecting filter and the deodorizing filter are separate bodies, and the tubular light source is arranged between them.
The filter unit 30 shown in FIG. 2C has an air flow 10e.
The dust collecting filter 32, the tubular light source 35, and the deodorizing filter 33 are arranged in this order in the downstream direction. The dust collecting filter 32 and the deodorizing filter 33 may be formed by folding in a pleat shape having the same width and the same thickness, or may be formed by folding in a pleat shape having a different width and a different thickness. The dust collecting filter 32 is fitted in the frame 38, and the deodorizing filter 33 is fitted in the frame 39 and fixed to separate frames.

FIG. 2D is a plan view showing one form of the filter unit, and shows a case where the dust collecting filter and the deodorizing filter are separate bodies and the tubular light source is arranged behind the filter. In the filter unit 30 of FIG. 2D, the dust collecting filter 32, the deodorizing filter 33, and the tubular light source 35 are arranged in this order toward the downstream of the air flow 10e. It may be formed by folding in a pleat shape having the same width and the same thickness, or may be formed by folding in a pleat shape having a different width and a different thickness. The dust collecting filter 32 is fitted in the frame 38, and the deodorizing filter 33 is fitted in the frame 39 and fixed to separate frames. The frame 38 and the frame 39 are not integrated, unlike FIG. 2B. Compared with FIGS. 2 (a) and 2 (b), the filter becomes slightly thicker.

FIG. 2 shows the filter unit 30.
Table 1 shows a comparison of performance evaluations when the configurations (a) to (d) are adopted.

[Table 1]

The photocatalyst deodorizing apparatus 100 according to the present invention can employ any of the filter units shown in FIGS. 2 (a) to 2 (d), but the forms shown in FIGS. 2 (a) and 2 (b) are not suitable for collecting dust. It is preferable because the total thickness of the filter and the deodorizing filter can be reduced. Further, the form of FIG. 2B is most preferable because the dust collecting filter and the deodorizing filter can be replaced according to their lives. According to the actual mounting test, in the form of FIG. 2A, the dust collecting function deteriorates after 400 hours (equivalent to one year use), and replacement is required. However, the deodorizing function is maintained at 60% due to the action of the photocatalyst. Therefore, the deodorizing filter that can still be used is wasted. If the photocatalyst is not used, the deodorizing function will be reduced in 400 hours (equivalent to one year use) and replacement will be required. On the other hand, in the configuration of FIG. 2B, it is possible to replace the dust collecting filter and the deodorizing filter in accordance with their respective lives, and the dust collecting filter is replaced for 400 hours (equivalent to one year use), and the deodorizing filter is replaced with 1200. Time (equivalent to 3 years use)
Replace with. Therefore, by adopting the configuration of FIG. 2B, it is possible to take advantage of the feature of extending the life of the deodorizing filter by the photocatalyst. That is, since the dust collecting filter and the deodorizing filter can be separately attached and detached, the frequency of exchanging the deodorizing filter can be reduced, which leads to a reduction in the expense of the vehicle owner.

Next, the positional relationship between the tubular light source and the deodorizing filter will be described with reference to FIG. The frame of the filter is not shown in FIG. In FIG. 3 (a), one end of the deodorizing filter 33 in the direction of the pleats peak / valley is
A recess 70 in which the tubular light source 35 can be embedded in a direction crossing the valley.
The tubular light source 35 is provided in the recess 70, and the deodorizing filter 3 is provided.
It is a schematic diagram showing the case where it installed so that the whole surface of one side of 3 may be irradiated. The recess 70 in FIG. 3A is formed by providing a notch that is inclined with respect to the peak and valley directions of the pleats of the filter. However, when the notch is formed,
Since the air flow does not pass through the filter surface and causes a short circuit (bypass), the opening is closed with the resin film 75 or the like. A filter with a notch and resin are molded integrally,
It is preferable to close it.

In FIG. 3 (b), a hollow 70 is provided in the center of the deodorizing filter 33 in the direction of the pleats in the direction of the pleats so that the tubular light source 35 can be embedded in the direction crossing the pleats in the direction of the pleats. FIG. 7 is a schematic view showing a case where the deodorizing filter 33 is installed so as to be able to irradiate the entire surface in a recess 70.
The recess 70 in FIG. 3B is formed by providing a V-shaped notch in the peak and valley directions of the pleats of the filter. Similar to FIG. 3A, the cutout opening is closed with a resin film 75 or the like. Also in this case, it is preferable that the filter having the notch and the resin be integrally molded and closed. The shape of the notch is not limited to the V shape, and may be a semicircular shape or a semielliptic shape.

A non-woven fabric may be applied to a mold having the same shape as the filter having the notches shown in FIGS. 3 (a) and 3 (b), and the non-woven fabric may be used as a deodorizing filter. In this case, since the cutout portion closed with the resin 75 in FIGS. 3A and 3B is a non-woven fabric, the filter area is not reduced, which is preferable. The concept of the deodorizing filter of the present invention is not limited to the case where the opening is closed with the resin 75 or the like as shown in FIGS. 3A and 3B, but a deodorizing filter in which a notch is formed by integrally forming a nonwoven fabric is also used. Also includes.

In FIG. 3 (c), a hollow 70 is provided at one end of the deodorizing filter 33 in the direction of the pleats in the direction of the pleats so that the tubular light source 35 can be embedded in the direction crossing the ridges and the valleys of the pleats. FIG. 7 is a schematic view showing a case where the deodorizing filter 33 is installed so as to be able to irradiate the entire surface in a recess 70.
The recess 70 in FIG. 3C is formed by folding the pleat of the filter. 3 (a) (b)
Unlike, it does not need to be closed because it does not form an opening. Therefore, since the filter is formed even in the recess 70, the filter efficiency is not deteriorated, which is preferable.

In the present invention, the number of tubular light sources is not limited to one. For example, as shown in FIG. 4 which is a case where two tubular light sources are used, the deodorizing filter 33 is provided with recesses 70 capable of embedding the tubular light source at both ends of the pleats in the peak / valley direction, and each tubular light source 35 has each Inside the recess 70, one surface of the deodorizing filter 33 may be installed so that the entire surface can be irradiated. In this case, the deodorizing filter 33 receives twice the amount of light as compared with the case of FIG. 3A, so the activity of the photocatalyst is improved.
Although FIG. 4 illustrates the case where the recess 70 is a notch that closes the opening, the folded shape of the pleats in FIG. 3C may be provided as a recess at both ends of the deodorizing filter 33 and may be similarly applied.

The fixing of the tubular light source 35 will be described. 2A to 2D, 3 and 4, the tubular light source 35 is fixed to a frame (not shown) that is separate from the filter frame, and the separate frame is air-conditioned. It is detachably fixed to the apparatus body 10 or fixed to a frame for a deodorizing filter. For fixing the tubular light source 35 to the frame, a method of supporting both ends of the tubular light source 35 through the frame can be exemplified. Further, the fixing of the separate frame to the air conditioner main body 10 can be exemplified by providing a locking claw (not shown) on the frame. In any case, in the present invention, the tubular light source 35 is the air conditioner body 10
Any attachment tool may be used as long as it can be detachably taken out from the container and can be fixed to the recess 70 of the deodorizing filter. This facilitates maintenance such as replacement of parts of the tubular light source.

Next, the fixing of the filter unit 30 to the air conditioner body 10 will be described. Filter unit 30
Comprises a dust collecting filter 32, a deodorizing filter 33 and frames 34, 37a, 37b, 38, 39 of these filters, and a tubular light source 35 and a frame (not shown) for supporting the tubular light source 35 if necessary. The unit frame is supported by an integrated unit frame (not shown), and the unit frame 1
It is preferably fixed to 0 in a detachable manner. . Each of the frames may be detachably fixed to the air conditioner body 10 without using the unit frame. Locking claws (not shown) are provided on the frame to detachably fix the frame and the air conditioner body 10. This facilitates maintenance such as replacement of parts of various filters.

Next, the dust collecting filter 32 will be described.
The dust collecting filter 32 has a dust collecting function of capturing dust in the air, and the filter material is not particularly limited, but a paper material,
It is formed of a fibrous material such as a resin material. Further, it is preferably a non-woven fabric such as a resin. By the way, in the present invention, the deodorizing filter is provided with a cutout-shaped recess that closes the opening or a pleated recess. In order to make the space in the thickness direction where the deodorizing filter and the dust collecting filter overlap each other as thin as possible, that is, to prevent the depression of the deodorizing filter from coming into contact with the dust collecting filter and hindering the thinning in the thickness direction. It is preferable to provide the dust filter with a recess having the same shape as the recess of the deodorizing filter at the same position. As with the deodorizing filter, it is preferable that the recess provided in the dust collecting filter be a recess having a cutout shape that closes the opening or a recess having a pleat folded shape. As a method of closing the opening, it is preferable to integrally mold the resin and the filter so that the resin film closes the opening of the filter. By closing the opening, it is possible to prevent leakage of the air flow, that is, bypass. Further, when the filter material is a non-woven fabric, it is preferable that the non-woven fabric is applied to a mold having a filter shape having a notch and the non-woven fabric is used as a dust collecting filter. In this case, since the cutout portion can also be made of a non-woven fabric, a reduction in the filter area does not occur as compared with closing the opening portion due to the cutout with resin, which is preferable. The optimum filter diameter is selected from the relationship between dust collection efficiency and ventilation resistance, and the present invention is not limited to the filter diameter. The material of the frames 34, 37a, 38 is not particularly limited, but those made of resin such as polypropylene are preferable.

Next, the deodorizing filter 33 will be described.
The deodorizing filter 33 has a function of adsorbing and removing odorous substances from the air after the dust collecting filter 32 has captured the dust in the air. The filter base material is formed using a fibrous material such as a paper material and a resin material similar to those of the dust collecting filter. Further, it is preferably a non-woven fabric. The filter diameter is
The optimum one is selected from the relationship between the dust collection / deodorization efficiency and the ventilation resistance, and the present invention is not limited to the filter diameter. An adsorbent powder such as activated carbon, zeolite, or silica gel is mixed with this filter base material, and a photocatalyst made of a metal oxide powder such as titanium oxide or zinc oxide is further supported. The adsorbent powder is preferably activated carbon. The photocatalyst is mixed with an adsorbent, and examples of the mixing method include a spray method and a method of mixing with the adsorbent. As described above, in order to secure a space for embedding the tubular light source, the deodorizing filter is provided with a cutout-shaped recess that closes the opening or a pleat-shaped recess. As a method of closing the opening, it is preferable to integrally mold the resin and the filter so that the resin film closes the opening of the filter.
By closing the opening, it is possible to prevent airflow from leaking. Further, when the filter material is a non-woven fabric, it is preferable that the non-woven fabric is applied to a mold having a filter shape having a notch and the non-woven fabric is used as a dust collecting filter. In this case, since the cutout portion can also be made of a non-woven fabric, a reduction in the filter area does not occur as compared with closing the opening portion due to the cutout with resin, which is preferable. The material of the frames 34, 37b, 39 is not particularly limited, but those made of resin such as polypropylene are preferable. When the photocatalyst of the deodorizing filter 33 is irradiated with ultraviolet rays from the tubular light source 35, OH radicals are generated from the adsorbed water. Due to the strong oxidizing power of the OH radicals, the odorous substance adsorbed on the adsorbent of the filter 33 is decomposed and the adsorbent is regenerated.

Next, the tubular light source 35 will be described. The tubular light source may be any light source for activating the photocatalyst, and a type of light source that radiates visible light to ultraviolet rays or only ultraviolet rays is used. Specifically, the tubular light source 35 may be a mercury lamp, a cathode tube (CFL), a black light, a cold cathode tube (CCFL), or a xenon outer electrode lamp. The tubular light source according to the present invention refers to the above-mentioned tubular lamp.

In the present invention, the tubular light source 35 is particularly preferably a xenon outer electrode lamp. In recent years, the use of mercury has been reduced due to environmental pollution,
This is because the same measures are needed for ultraviolet lamps. In this respect, the light emitting diode can also be used as an ultraviolet light source without using mercury, but the intensity of ultraviolet light per light emitting diode is weak, and it is necessary to arrange many light emitting diodes. On the other hand, the xenon external electrode lamp is structurally incapable of 360-degree full-angle emission, but the emission angle of the light can be adjusted, so that only the deodorizing filter can be efficiently irradiated, and the ultraviolet irradiation of other members can be performed. It is also possible to prevent deterioration. Table 2 shows the relationship between various lamps and the amount of mercury.

[Table 2] Table 3 shows the relationship between various lamps and ultraviolet irradiation intensity.

[Table 3] The xenon external electrode lamp does not use mercury and has a high ultraviolet irradiation intensity, and is therefore suitable as a tubular light source.

Next, the tubular light source 35 is a piece of the deodorizing filter 33.
The tubular light source 35 and the deodorizing film when the entire surface can be illuminated
The positional relationship of the switch 33 will be described with reference to FIG. Figure
5 is a schematic view of the filter unit shown in FIG.
So, (a) is a perspective view and (b) is based on FIG.
Front view, (c) is the xenon outer surface of the tubular light source 35
A schematic diagram of the cross section of the electrode lamp taken along the line A-A ′ is shown.
It is a thing. The dust collecting filter 32 and the deodorizing filter 3
3 shows the detached state for clarity, but when attached
It becomes a joined state. The tubular light source 35 fits within the recess 70,
In addition, the tube axial direction of the tubular light source 35 is set to the
Tubular light source 35 so that the direction crosses the mountains and valleys of the gate
Is preferably arranged. That is, the axis of the tubular light source 35
Heart X is the pleated mountain / valley line 33a of the deodorizing filter 33
Mountain / valley axis Y₁, Y_Two, Y_nOrthogonal to and tubular light source
35 axis X and mountain / valley Y₁Distance d_1,Tubular light source 35
Axis X and folding axis Y_TwoDistance d_2,And tubular light source
35 axis X and folding axis Y _nDistance d_nAre all equal
The tubular light source 35 and the deodorizing filter 33 are arranged so that
Preferably. At this time folded in pleats
The deodorizing filter 33 is attached to every part in the X-axis direction.
Irradiation with light of a certain intensity or more.

The tubular light source 35 is the deodorizing filter 33.
As long as the entire surface can be illuminated on one side, the distance d_1,Distance d
_2,And distance d_nWhile keeping all equal, the axis X and the mountains and valleys
Axis Y ₁, Y_Two, Y_nCancel the orthogonal relationship with
You can bring it closer. That is, as shown in FIG.
Alternatively, the tubular light source 35 may be displaced in the S direction. However,
Axis X and folding axis Y₁, Y_Two, Y_nParallel orthogonal relationship with
If you get too close to the relationship, the filter pleats will block the light.
Some parts of the deodorizing filter are not exposed to light.
However, it is not preferable.

Further, the tubular light source 35 maintains the positional relationship between the tubular light source 35 and the deodorizing filter 33 described above, and as shown in FIG. You may arrange. 3 (a) (c)
As shown in FIG. 4, the tubular light source 35 is arranged near one end of the pleats of the deodorizing filter 33 in the peak / valley direction, or near one end of the pleats, or as shown in FIG. More preferably. This is because the tubular light source 35 does not block the air flow.

Further, in the present invention, the setting of the radiation angle with which the tubular light source 35 can irradiate the entire surface of one side of the deodorizing filter 33 will be described. The tubular light source 35 may have a radiation angle equal to or larger than the one surface of the deodorizing filter 33 that can irradiate the entire surface. This is because the tubular light source 35 irradiates ultraviolet rays and deteriorates other members. In a tubular light source having a 360 ° omnidirectional radiation angle, it is preferable to provide a reflection plate (not shown) and adjust the radiation angle so that only one side of the deodorizing filter 33 can be entirely illuminated.

In the present invention, the length of the tubular light source is preferably substantially the same as the width of the deodorizing filter. If the length of the tubular light source is shorter than the width of the deodorizing filter, it is difficult to irradiate the entire surface of the deodorizing filter with light. On the other hand, if it is longer than the width of the deodorizing filter, the portion where the tubular light source projects from the width of the deodorizing filter This is because space is required and the device becomes large.

The case where a xenon outer electrode lamp is used as the tubular light source 35 will be described in detail. The xenon external electrode lamp does not have an electrode inside the lamp, but an electrode is provided outside to discharge the internal gas. In the xenon outer electrode lamp of the present invention, at least one electrode is provided on the outer surface of the lamp. FIG. 5C shows a structural schematic view of a cross section of the xenon outer electrode lamp, which is the tubular light source 35, taken along the line AA ′. Two external electrodes 51 are arranged outside the glass tube 50 in parallel with the tube axis, and a fluorescent material 52 is applied to the inside of the glass tube, which is a dielectric material, and the fluorescent material in the portion just between the external electrodes 51 is removed. An aperture 53 is provided and light is extracted from the aperture 53. As the filling gas, pure xenon or a rare gas mixed gas mainly containing xenon is used, and mercury for the purpose of causing the phosphor to emit light is unnecessary. When a high frequency high voltage is applied to the outer electrode 51 of the xenon outer electrode lamp, dielectric polarization occurs in the glass, which is a dielectric, and a high voltage is generated inside the lamp. Discharge starts when the xenon gas in contact with the glass reaches the breakdown voltage. Immediately, the ions and electrons in the plasma move to the negative electrode side and the anode side, respectively, so that the voltage in the plasma sharply drops and the discharge ends in a short time (approximately several tens of ns). This discharge is a fine discharge with a diameter of about 0.1 mm, but a large number of discharges occur when the conditions of discharge breakdown are satisfied on the glass surface between the external electrodes 51. After a series of micro discharges,
In case of high frequency lighting, the charge on the dielectric surface inside the lamp is
By applying a reverse voltage, the external electrodes 51 and the glass are electrically neutralized. However, the electric charge on the inner surface of the glass of the lamp remains, and at the reverse voltage, a fine discharge is generated below the initial discharge breakdown voltage with the help of the residual electric charge on the inner surface of the glass, and so on. The xenon external electrode lamp has higher efficiency than the conventional internal electrode type lamp.

The xenon outer electrode lamp has a structure in which light is extracted from the aperture 53 at an angle θ as described above, and the angle of the aperture 53 is substantially equal to the irradiation angle of the ultraviolet light of the tubular light source 35. Therefore, when a xenon external electrode lamp is used as the tubular light source 35,
As shown in FIGS. 5A and 5B, the angle of the aperture 53 is adjusted so that the tubular light source 35 matches the radiation angle θ with which one surface of the deodorizing filter can be entirely irradiated. The tubular light source 35 shown in FIG. 5 is arranged near one end of the deodorizing filter 35. However, when the tubular light source 35 is arranged at the center of the filter, the radiation angle θ that can irradiate the entire surface of one side of the deodorizing filter changes. Therefore, the angle of the aperture 53 may be adjusted accordingly.

FIG. 6 is a schematic view of a filter unit in which a second deodorizing filter is added to the filter unit of FIG. 2 (b), that is, the filter unit shown in FIG. 7 (b). Is a perspective view, (b) is a front view,
(C) is a structural schematic diagram of a cross-section taken along line BB ′ of the xenon outer electrode lamp which is the tubular light source 35.
The filter unit 35 is preferably in the form shown in FIGS. FIGS. 7A to 7D are obtained by additionally installing the second deodorizing filter 60 in FIGS. 2A to 2D, respectively. In FIG. 6A, the air purifying unit, which is the filter unit 35, is provided with a dust collecting filter 32, a deodorizing filter 33, a tubular light source 35, and a second deodorizing filter 60 processed into a pleated shape and carrying a photocatalyst. FIG. 7 is a perspective view showing a case in which the elements are arranged so as to be sequentially stacked toward the downstream side of FIG. The frame of the filter is not shown. The dust collecting filter 32 and the deodorizing filter 33 are shown in a detached state for the sake of clarity, but they are in a joined state when mounted. The relationship between the dust collecting filter 32, the deodorizing filter 33, and the tubular light source 35 is the same as the case described in FIG. 2, FIG. 3, or FIG. 4, so the second deodorizing filter 60 will be described. The second deodorizing filter 60 is
It is made of the same material as the deodorizing filter 33, carries the same photocatalyst, and is folded into pleats. The width and the thickness may be the same as or different from those of the deodorizing filter 33.
As shown in FIG. 6A, the second deodorizing filter 60 includes the folding axes y ₁ , y ₂ , y _n formed by the folding lines 60 a of the second deodorizing filter 60 and the folding axis Y ₁ , of the deodorizing filter 33.
Arrange so that Y ₂ and Y _n are parallel to each other. By arranging the second deodorizing filter 60 in this way, the deodorizing filter 3
As with No. 3, it does not happen that the light does not reach a part of the deodorizing filter due to the pleats. Tubular light source 35
2A to 2D in which the second deodorizing filter 60 is not provided, although it is desirable that the axis center X of Y is orthogonal to Y ₁ , Y ₂ , Y _n or y ₁ , y ₂ , y _n . The tubular light source 35
May deviate from the orthogonal relationship as long as it can irradiate the entire surface of one side of the deodorizing filter 33 and that the tubular light source 35 can irradiate the entire surface of one side of the second deodorizing filter 60.

The arrangement of the deodorizing filter, the tubular light source and the second deodorizing filter in the direction of the air flow 10e will be described by taking the case of the filter unit of FIG. 7B as an example. Figure 8
(A)-(c) shows the schematic arrangement of the deodorizing filter, the tubular light source, and the second deodorizing filter in the air flow 10e direction. FIG. 8 (a) is the same as the arrangement shown in FIG. 7 (b), in which the deodorizing filter side is provided with a recess in which a tubular light source can be embedded in a direction crossing the pleats' peaks and valleys, and the tubular light source is placed in the recess. It is located in. In FIG. 8B, a recess in which a tubular light source can be embedded is provided on the second deodorizing filter side in a direction traversing the peaks and valleys of the pleats, and the tubular light source is arranged in the recess. Figure 8 (c)
In the above, both the deodorizing filter and the second deodorizing filter are provided with a recess in which a tubular light source can be embedded in a direction traversing the peaks and valleys of the pleats, and the tubular light source is arranged in the recess. When the second deodorizing filter is installed in the present invention, the configuration shown in FIG.
Any of the arrangements of (c) may be used. In order to reduce the distance between the filter surfaces of the deodorizing filter and the second deodorizing filter to reduce the thickness in the air flow 10e direction, the arrangement of FIG. 8C is more preferable.

When the second deodorizing filter is provided,
In order to irradiate the filter surface with high intensity, as in the case shown in FIG. 4, recesses capable of embedding a tubular light source are provided at both ends of the pleats in the peak and valley directions, and the tubular light source is placed in each recess. It is preferable to install such that one surface of the deodorizing filter and the opposite one surface of the second deodorizing filter can be entirely irradiated. The facing one surface of the second deodorizing filter means the one surface of the second deodorizing filter which is in a facing relationship with the one surface of the deodorizing filter irradiated with light and which is irradiated with light.

When a xenon outer electrode lamp is used as the tubular light source 35, two apertures 53 are provided as shown in FIG. 6C, and light is extracted from the aperture 53 to the lower left and right. As shown in FIGS. 6A and 6B, the left and right angles of the aperture 53 are such that the tubular light source 35 can irradiate the entire surface of one side of the deodorizing filter 33 with an emission angle θ ₁ and the tubular light source 35 has the second deodorizing filter 60. Adjustment is made so as to match the radiation angle θ ₂ that can irradiate the entire surface on one side. The tubular light source 35 shown in FIG. 6 is arranged near one end of the deodorizing filter 33. However, when it is arranged at the center of the filter, the radiation angle θ that can irradiate the entire surface of one side of the deodorizing filter 33 changes. The angle of the aperture 53 may be adjusted accordingly. The same applies to the aperture 53 for irradiating the second deodorizing filter 60.

[Second Embodiment] Next, a case where a light emitting diode element is used as a light source for activating a photocatalyst will be described. A photocatalytic deodorizing apparatus 200 according to the present invention will be described with reference to FIGS. FIG. 9 is a schematic diagram when the photocatalytic deodorizing device 200 according to the present invention is incorporated in a vehicle air conditioner. The basic structure is the same as that of FIG. 1, but a light source 80 in which light emitting diode elements are arranged in the filter unit 30 instead of the tubular light source.
Is different.

The filter unit 30 is an air purifying unit, and as in the first embodiment, a dust collecting filter processed into a pleated shape, a deodorizing filter processed into a pleated shape and carrying a photocatalyst, and light for activating the photocatalyst. It is composed of a light source for irradiation. Since the light source 80 including the light emitting diode and the substrate is thinner than the tubular light source, for example, as shown in FIG.
It is not necessary to provide the depression 70 corresponding to (a).

The light source 80 comprises light emitting diode elements 82 arranged on a substrate 81 at predetermined intervals, and the light emitting diode elements 82 irradiate light having a wavelength that activates the photocatalyst. As described above, the light emitting diode element does not contain mercury. As the light emitting diode element, for example, a purple light emitting diode element having the structure of FIG. 14 can be exemplified. This light emitting diode element has a 380 to 383 nm (radiant flux 2.3 m
W, radiant intensity 5.4 mW / sr) or 383-386 nm (radiant flux 2.6 mW, radiant intensity 5.7 mW / sr) or 386-
Light having a wavelength of 389 nm (radiant flux 3.5 mW, radiant intensity 7.7 mW / sr) or the like can be irradiated. Thereby, the photocatalyst can be efficiently activated.

The arrangement of the dust collecting filter, the deodorizing filter and the light source will be described with reference to FIG. Regarding the shapes of the dust collecting filter and the deodorizing filter, except that, for example, the recess 70 corresponding to FIG. 3A is not provided,
It is similar to the first embodiment. 10A to 10D are plan views of the filter unit 30 shown by the dotted line in FIG.
FIG. 9 is a view as seen from above in FIG. 9, and is a conceptual diagram showing an example of the form of a filter unit. FIG. 10 (a)-
(D) illustrates only the side frame portion and does not show the upper frame portion in order to explain the shape of the filter. In FIG. 10, the arrangement relationship between the dust collecting filter, the deodorizing filter, and the light source will be described in the air flow direction, and the detailed positional relationship between the light source and the deodorizing filter will be described later.

FIG. 10A is a plan view showing an embodiment of the filter unit in which the tubular light source is replaced by the light source 80 in FIG. 2A. FIG. 10B is a plan view showing one form of the filter unit in which the tubular light source in FIG. 2B is replaced with the light source 80. FIG. 10C is the same as FIG.
It is a top view which shows one form of the filter unit which replaced the tubular light source with the light source 80 in (c). Figure 10 (d)
FIG. 3 is a plan view showing one form of a filter unit in which a tubular light source is replaced with a light source 80 in FIG. 2 (d). The photocatalyst deodorizing apparatus 200 according to the present invention is shown in FIG.
Any of the filter units shown in (d) can be adopted. The configurations shown in FIGS. 10A and 10B are preferable because the total thickness occupied by the dust collecting filter and the deodorizing filter can be reduced. Further, for the same reason as in the case of the first embodiment, the form of FIG. 10B is most preferable because it is possible to realize the replacement of the dust collecting filter and the deodorizing filter according to their respective lives.

Next, the positional relationship between the light source and the deodorizing filter will be described with reference to FIGS. 11 and 12. 11A and 11A are schematic views of the filter surface, and FIG. 11B is a view of the filter side surface (left side surface) that crosses the pleats peaks and valleys. The filter frame is not shown in FIGS. 11 and 12. As shown in FIG. 11A, the light source 80
Has a configuration in which the light emitting diode elements 82 are arranged on the substrate 81 at intervals such that the light emitting diode elements 82 are arranged in each valley of the pleats of the deodorizing filter 33. Further light source 80
Is installed so that one side of the deodorizing filter 33 can be entirely illuminated. As shown in FIG. 11B, since the light emitting diode element 82 is arranged in each valley of the pleats,
Even if the light irradiation intensity of each light emitting diode element is weak, it is possible to irradiate the deodorizing filter 33 with sufficient light to activate the photocatalyst. In FIG. 11, the light source 80
However, two or more light sources may be arranged in order to make the light emission to the deodorizing filter 33 uniform and to increase the irradiation amount. Further, the light source 80 is installed in the central portion of the deodorizing filter 33, but the installation location is not limited to the central portion as long as one side of the deodorizing filter can be entirely illuminated. Furthermore, two or more rows of light emitting diode elements may be arranged on the substrate.

As shown in FIG. 12 (a), the light sources 80 are arranged at both ends of the deodorizing filter 33 in the direction of the pleats in the pleats, and each light source 80 is provided for each valley of the pleats of the deodorizing filter 33. The light emitting diode elements 82 may be arranged on the substrate 81 at intervals such that the light emitting diode elements 82 are arranged. Further, each light source 80 is installed so that one surface of the deodorizing filter 33 can be entirely illuminated. As shown in FIG. 12B, since the light emitting diode element 82 is arranged in each valley of the pleats, even if the light irradiation intensity of each light emitting diode element is weak, sufficient light for activating the photocatalyst is generated. It is possible to irradiate the deodorizing filter 33. Further, two or more rows of light emitting diode elements may be arranged on the substrate.

The fixing of the light source 80 will be described. Light source 8
0 is a frame (not shown) that is separate from the filter frame in any of FIGS. 10A to 10D, 11 and 12.
The frame is fixed to the air conditioner main body 10 in a detachable manner, or is fixed to the frame for the deodorizing filter.
The light source 80 can be fixed to the frame by a method of supporting both ends of the light source 80 through the frame. Further, the fixing of the separate frame to the air conditioner main body 10 can be exemplified by providing a locking claw (not shown) on the frame. In any case, in the present invention, the light source 80 may be fixed by using any attachment as long as it can be detachably taken out from the air conditioner body 10. This facilitates maintenance such as replacement of parts of the light source.

Next, the fixing of the filter unit 30 to the air conditioner body 10 is the same as in the first embodiment.

The material and the filter diameter of the dust collecting filter 32 and the deodorizing filter 33 are the same as those in the first embodiment.

In the first and second embodiments, the size and thickness of the device can be reduced.

In the present embodiment, a plurality of filter units may be provided in the air conditioner body 10 in order to improve the air purification efficiency. Furthermore, in the first and second embodiments, the filter unit 30 is installed so that the tubular light source 35 or the light source 80 is horizontal with respect to the air conditioner body 10, but it may be arranged vertically. Further, when the filter is processed into a pleat shape, it is not limited to be folded into a V shape, but may be processed into a U shape with curved peaks and troughs.

[0070]

According to the first aspect of the present invention, the device characteristics such as long life and high efficiency of the dust collecting filter and the deodorizing filter and sufficient activation of the photocatalyst supported on the deodorizing filter are obtained, and then the tubular shape is obtained. We were able to provide a photocatalytic deodorizing device that was compatible with the downsizing of the device by drastically reducing the space required for the light source. In this device, the deodorizing filter is regenerated by the decomposition of odorous substances, and the deodorizing effect can be maintained for a long time. Further, it was possible to provide a photocatalytic deodorizing device which is easy to maintain such as replacement of parts of the dust collecting filter, the deodorizing filter and the tubular light source.

According to the second aspect of the invention, tubular light sources are installed at both ends of the pleats of the deodorizing filter in the peak and valley directions, respectively, and any portion of the deodorizing filter folded in a pleat shape is irradiated with light having a certain intensity or more. By doing so, it was possible to provide a photocatalytic deodorizing device that enhances the catalytic activity and realizes high efficiency of deodorizing while maintaining the small size of the device.

According to the third aspect of the invention, the device characteristics such as long life and high efficiency of the dust collecting filter and the deodorizing filter and sufficient activation of the photocatalyst supported on the deodorizing filter are obtained, and then the area of the deodorizing filter is increased. Second reason for further increase of
Even if the deodorizing filter is installed and the second deodorizing filter is additionally installed, the photocatalytic deodorizing device in which the size of the device is minimized can be provided by greatly reducing the space required for the tubular light source. Further, it was possible to provide a photocatalytic deodorizing device which is easy to maintain such as replacement of parts of the dust collecting filter, the deodorizing filter and the tubular light source.

In the invention according to claim 4, after the second deodorizing filter is installed, either one of the deodorizing filter and the second deodorizing filter or both ends of the pleats in the peak and valley directions are respectively provided with tubular light sources. Then, the area of the filter was increased and any part of the deodorizing filter folded in a pleat shape was irradiated with light having a certain intensity or more to enhance the catalytic activity and further enhance the deodorizing performance. Even in this case, it was possible to provide a photocatalytic deodorizing device in which the size of the device was kept to a minimum by greatly reducing the space required for the tubular light source.

According to the fifth aspect of the present invention, it is possible to provide a photocatalytic deodorizing device which prevents the occurrence of a short circuit of the air flow in the recess formed for the purpose of significantly reducing the required space of the tubular light source. Furthermore, the photocatalytic deodorizing device in which the reduction of the filter area was prevented could be provided by making the recessed portion also serve as a filter.

According to the sixth aspect of the present invention, it is possible to provide a catalytic deodorizing device that does not use mercury and can efficiently irradiate only the deodorizing filter to prevent deterioration of other members due to ultraviolet irradiation. did it.

In the invention according to claim 7, by making the length of the tubular light source and the width of the deodorizing filter substantially the same, the entire surface of the deodorizing filter is irradiated with light, and a small catalyst deodorizing device with a minimum required space is provided. Could be provided.

In the eighth aspect of the present invention, the deodorizing filter is irradiated with the light source in which the light emitting diode elements that can be made thin and have a small required space are effectively arranged, so that the dust collecting filter and the deodorizing filter can have a long life. As a result, it was possible to provide a photocatalytic deodorizing device that achieves both high efficiency and sufficient activation of the photocatalyst supported on the deodorizing filter, and also downsizing of the device. In addition, it was possible to provide a photocatalytic deodorizing device that is easy to maintain such as replacement of dust collecting filters, deodorizing filters, and light source parts.

According to the invention described in claim 9, it is possible to provide a small-sized photocatalytic deodorizing device of a different form from the above, which uses a light emitting diode element as a light source.

According to the tenth aspect of the invention, the dust collecting filter and the deodorizing filter are provided separately, and one of the dust collecting filters having a short life can be replaced, but the same thinness as that when these filters are integrated is achieved. It was possible to provide a photocatalytic deodorizing device that can be realized. Further, the frequency of exchanging the deodorizing filter can be reduced, which leads to a reduction in the expenditure of the vehicle owner.

[Brief description of drawings]

FIG. 1 is a schematic side view of one embodiment of a photocatalytic deodorizing device according to the present invention, which is incorporated into a vehicle air conditioner,
(A) has one tubular light source, (b) has two tubular light sources
The case of a book is shown.

FIG. 2 is a schematic plan view showing an example of the form of the filter unit shown in FIG. 1A, in which FIG. 2A shows a case where a dust collecting filter and a deodorizing filter are integrally joined,
(B) shows a case where the dust collecting filter and the deodorizing filter are detachably and adjacently or in contact with each other so as to form a filter, and (c) shows a case where the dust collecting filter and the deodorizing filter are separate bodies and between them. If a tubular light source is placed, (d)
It is a schematic diagram showing when a dust collecting filter and a deodorizing filter are separate bodies, and a tubular light source is arranged behind a deodorizing filter.

FIG. 3 is a diagram showing a positional relationship between a tubular light source of a filter unit and a deodorizing filter, in which (a) is a pleated peak of the deodorizing filter at one end in the ridge / valley direction.
Provided with a notch that closes the opening that can embed the tubular light source in the direction that crosses the valley, and the tubular light source is installed within the notch so that one side of the deodorizing filter can be entirely illuminated.
(B) is a deodorizing filter having a notch at the central portion of the pleats in the direction of the pleats in the direction of the pleats in which the tubular light source can be embedded in a direction transverse to the pleats. When installed so that the entire surface of one side of the deodorizing filter can be irradiated, in (c), a tubular light source can be embedded in one end of the deodorizing filter in the direction of peaks and valleys of the pleats in a direction that crosses the peaks and valleys of the pleats. 3 shows a case where a simple fold-in shape is provided and the tubular light source is installed so that one surface of the deodorizing filter can be entirely irradiated within the fold-in shape.

FIG. 4 is a view showing a form of a positional relationship between a tubular light source of a filter unit and a deodorizing filter, wherein the deodorizing filter is tubular at both ends of the pleats of the deodorizing filter in a direction crossing the peaks and valleys of the filter. A case is shown in which a notch that closes the opening in which the light source can be embedded is provided, and the tubular light source is installed so that one side of the deodorizing filter can be entirely irradiated in each notch.

5A and 5B are schematic views of the filter unit shown in FIG. 2B, in which FIG. 5A is a perspective view, FIG. 5B is a front view, and FIG. 5C is a tubular light source 35 of the xenon external electrode lamp A. -A '
Fig. 2 shows a schematic structural view of a line cross section.

6 is a schematic view of a filter unit additionally installed with a second deodorizing filter shown in FIG. 7 (b),
Is a perspective view, (b) is a front view, and (c) is a structural schematic diagram of a cross-section taken along line BB ′ of the xenon outer surface electrode lamp which is the tubular light source 35.

FIG. 7 is a schematic plan view showing a form example of a filter unit in which a second deodorizing filter is arranged at the rearmost side,
Is a case where the dust collecting filter and the deodorizing filter are integrally joined, and (b) is a case where the dust collecting filter and the deodorizing filter are adjacently or in contact with each other so as to detachably overlap with each other to form the filter. In (c), the dust collecting filter and the deodorizing filter are separate bodies, and the tubular light source is arranged between them. In (d), the dust collecting filter and the deodorizing filter are separate bodies, and the tubular light source is the deodorizing filter. When placed behind,
FIG.

FIG. 8 is a schematic plan view showing a form example of a filter unit arranged at the rearmost side of the second deodorizing filter,
Is a depression on the side of the deodorizing filter where the tubular light source can be embedded in a direction crossing the peaks and troughs of the pleats. When the tubular light source is arranged in the depression, (b) is the second deodorizing filter side. When a hollow in which a tubular light source can be embedded is provided in a direction traversing the groove, and the tubular light source is arranged in the hollow, (c) shows a tubular shape in a direction crossing the pleats peaks and valleys in both the deodorizing filter and the second deodorizing filter. The case where the recess in which the light source can be embedded is provided and the tubular light source is arranged in the recess is shown respectively.

FIG. 9 is a schematic view showing a photocatalytic deodorizing device in which a light emitting diode element is arranged as a light source, which is incorporated in a vehicle air conditioner.

10 is a schematic plan view (a view seen from above in FIG. 9) showing a form example of the filter unit 30 shown by a dotted line in FIG. 9, in which (a) is a tubular light source in FIG. 2B, when the tubular light source is replaced by the light source 80 in FIG. 2B, and FIG.
When the tubular light source is replaced with the light source 80 in (c),
2D shows the case where the tubular light source is replaced with the light source 80 in FIG. 2D.

FIG. 11 is a schematic view showing an arrangement of a light source and a deodorizing filter using a light emitting diode element of a filter unit, (a) is a schematic view of a filter surface,
(B) is the figure seen from the filter side which crosses the peak and valley of pleats.

FIG. 12 is a schematic view showing another configuration of the arrangement of the light source and the deodorizing filter using the light emitting diode element of the filter unit, (a) is a schematic view of the filter surface,
(B) is the figure seen from the filter side which crosses the peak and valley of pleats.

FIG. 13 is a schematic cross-sectional view of a dust collecting filter or a deodorizing filter processed into pleats according to the present invention in a direction crossing peaks and valleys.

FIG. 14 is a conceptual diagram showing a lamp structure of a violet light emitting diode element used in the present invention.

[Explanation of symbols]

10, air conditioner body 11, damper 10a, air inlet 10b, inside air inlet 10c, outside air inlet 10d, air passage 10e, air flow 10f, purified air outlet 20, blower 30, filter unit 31, filter 32, collecting Dust filter 33, deodorizing filter 33a, pleated folding lines 34, 37a, 37b, 38, 39, frame 35, tubular light source 36, filter 40, evaporator 50, glass tube 51, external electrode 52, phosphor 53, aperture 60, The second deodorizing filter 70, the recess 75 formed by the cutout or the pleat folding shape that closes the opening, the resin sheet portion 80 that closes the cutout opening, the light source 81, the substrate 82, the light emitting diode elements 100, 200, Photocatalytic deodorizer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01J 35/02 B60H 3/00 F B60H 3/00 B01D 53/36 H F term (reference) 4C080 AA07 AA09 AA10 BB04 CC01 HH05 JJ03 JJ09 KK08 LL02 LL10 MM02 NN04 NN05 NN06 QQ11 QQ17 4D048 AA22 AB03 BA07X BA16X BA41X BB08 CD05 EA01 4G069 AA03 BA04B BA48A BB04B BC35B CA10 CA17 CA02 EA09 EA09 EA09 EA09

Claims (10)

[Claims] 1. A dust collecting filter processed into pleats, a deodorizing filter processed into pleats and carrying a photocatalyst, and the photocatalyst in an air passage forming an air flow from an air inlet to a purified air outlet. An air purifying unit configured to be arranged so that tubular light sources for irradiating activating light are sequentially stacked, or configured to sequentially stack the dust collecting filter, the tubular light source, and the deodorizing filter In the photocatalytic deodorizing device arranged in, the deodorizing filter is provided with a recess in which the tubular light source can be embedded in a direction crossing the peaks and valleys of the pleats, the tubular light source, in the recess, one side of the deodorizing filter. A photocatalytic deodorizing device, which is installed so that the entire surface can be irradiated. 2. The deodorizing filter is provided with recesses at both ends of the pleats in the peak / valley direction in which the tubular light source can be embedded, and each tubular light source irradiates one surface of the deodorizing filter entirely within the recess. The photocatalytic deodorizing device according to claim 1, wherein the photocatalytic deodorizing device is installed so that it can be installed. 3. A pleated dust collecting filter, a pleated deodorizing filter carrying a photocatalyst, and a photocatalyst in an air passage forming an air flow from an air intake to a purified air outlet. A photocatalytic deodorizing device in which a tubular light source for irradiating activating light and a pleated shape and a second deodorizing filter carrying a photocatalyst are arranged so as to be sequentially stacked so that an air purifying unit is detachably arranged, Either or both of the deodorizing filter and the second deodorizing filter are provided with a recess in which the tubular light source can be embedded in a direction that traverses the ridges and valleys of the pleats, and the tubular light source, in the recess, One side of the deodorizing filter and the second
A photocatalytic deodorizing device, characterized in that the deodorizing filter is installed so as to be able to irradiate the entire surface on one side facing each other. 4. Either or both of the deodorizing filter and the second deodorizing filter are provided with recesses at both ends of the pleats in the peak and valley directions in which the tubular light sources can be embedded, and each tubular light source comprises: The photocatalytic deodorizing device according to claim 3, wherein the photocatalytic deodorizing device is installed so that one surface of the deodorizing filter and one surface of the second deodorizing filter facing each other can be entirely irradiated in each of the depressions. 5. The photocatalytic deodorizing device according to claim 1, wherein the recess has a notch shape in which an opening is closed or a pleat is formed in a folded shape. 6. The photocatalytic deodorizing device according to claim 1, wherein the tubular light source is a xenon outer electrode lamp. 7. The tubular light source is formed to have a length substantially the same as the width of the deodorizing filter.
The photocatalytic deodorizing device according to 2, 3, 4, 5 or 6. 8. A dust collecting filter processed into pleats, a deodorizing filter processed into pleats and carrying a photocatalyst, and the photocatalyst in an air passage forming an air flow from an air inlet to a purified air outlet. An air purifying unit configured to be arranged so that light sources for irradiating activating light are sequentially stacked, or to be arranged so that the dust collection filter, the light source, and the deodorizing filter are sequentially stacked is detachably arranged. In the photocatalytic deodorizing device, the light source has a configuration in which the light emitting diode elements are arranged on a substrate at intervals at which light emitting diode elements are arranged for each valley of pleats of the deodorizing filter, and one side of the deodorizing filter is A photocatalytic deodorizing device, which is installed so that the entire surface can be irradiated. 9. A pleated dust collecting filter and a pleated deodorizing filter carrying a photocatalyst are successively stacked in an air passage forming an air flow from an air inlet to a purified air outlet. A photocatalytic deodorizing device in which an air purifying unit is removably arranged and is arranged at both ends of the pleats of the deodorizing filter in the peak and valley directions to irradiate light for activating the photocatalyst. The light sources are configured such that the light emitting diode elements are arranged on the substrate at intervals where the light emitting diode elements are arranged in each valley of the pleats of the deodorizing filter, and one surface of the deodorizing filter can be entirely illuminated. A photocatalytic deodorizing device, which is installed in. 10. The dust collecting filter is formed by processing the pleated shape of the dust collecting filter so as to overlap with the deodorizing filter, and is arranged in a line so as to be detachably stacked on the deodorizing filter. Claims 1, 2, 3,
The photocatalytic deodorizing device according to 4, 5, 6, 7, 8 or 9.