JP7283773B2 - Air purification device and indoor air purification method - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Application of Article 30, Paragraph 2 of the Patent Act, from September 3, 2020, publications describing "air purifier (product name: UV-SNIPER Mamoru-chan)" will be published by Taisei. Denki Co., Ltd. (Representative: Akira Kanemitsu) announces by distributing to multiple business partners

Application of Article 30, Paragraph 2 of the Patent Act Application of Article 30, Paragraph 2 of the Patent Act On July 15, 2020, Akira Kanemitsu installed an "air purification device (product name: UV-SNIPER Mamoru-chan)" Release

Application of Article 30, Paragraph 2 of the Patent Act Application of Article 30, Paragraph 2 of the Patent Act On August 10, 2020, Akira Kanemitsu installed an "air purification device (product name: UV-SNIPER Mamoru-chan)" Release

Application of Article 30, Paragraph 2 of the Patent Act Application of Article 30, Paragraph 2 of the Patent Act On August 17, 2020, Akira Kanemitsu installed an "air purifier (product name: UV-SNIPER Mamoru-chan)" Release

Article 30, Paragraph 2 of the Patent Act applies Article 30, Paragraph 2 applies. Release

Article 30, Paragraph 2 of the Patent Act applies Article 30, Paragraph 2 applies. Release

Application of Article 30, Paragraph 2 of the Patent Act Application of Article 30, Paragraph 2 of the Patent Act, on October 8, 2020, by Akira Kanemitsu, by installing an "air purification device (product name: UV-SNIPER Mamoru-chan)" Release

Article 30, Paragraph 2 of the Patent Law applies Article 30, Paragraph 2 applies. Release

Article 30, Paragraph 2 of the Patent Act applies Article 30, Paragraph 2 applies. Release

Article 30, Paragraph 2 of the Patent Act applies Article 30, Paragraph 2 applies. Release

Application of Article 30, Paragraph 2 of the Patent Law Application of Article 30, Paragraph 2 of the Patent Act On September 10, 2020, Fumihiro Okamoto sold an "air purification device (product name: UV-SNIPER Mamoru-chan)" to a customer. Disclosure by sale and delivery

Article 30, Paragraph 2 of the Patent Act applies Article 30, Paragraph 2 applies. Publish by installing

TECHNICAL FIELD The present invention relates to an air purification device and an indoor air purification method. More specifically, the present invention relates to an air purifying device that has a simple structure, is easy to construct, does not get in the way when installed, and can efficiently purify indoor air, and an indoor air purifying method.

BACKGROUND ART Conventionally, various types of air purifiers have been used as means for purifying the air by killing bacteria and viruses contained in the indoor air. Examples of purification means in the air purifier include filters, those using hypochlorous acid water, those using ultraviolet rays, and the like.

By the way, due to the epidemic of coronavirus, it is expected that air purifiers will be used all year round, but in the case of air purifiers that use consumables such as filters and hypochlorous acid water, replacement and replenishment are troublesome. Besides being complicated, the running cost is expected to increase in proportion to the operating time.

As one means for solving such problems, for example, an air cleaning unit as described in Patent Document 1 below has been proposed. The air cleaning unit is characterized by comprising a charging section that charges viruses or bacteria contained in the air, and an air cleaning section that has apatite that adsorbs the viruses or bacteria.

The air purifying unit described in Patent Literature 1 is said to be able to improve the ability to collect viruses and bacteria without lowering the air purification efficiency per unit time due to the configuration described above. In addition, the air purifying unit is disclosed in a mode in which the air purifying part further has a sterilizing part, and the sterilizing part removes viruses or bacteria, and eliminates the occurrence of bad odors and odors without frequent cleaning and replacement. It is said that it can suppress the occurrence of air pollution.

JP 2005-161022 A

On the other hand, as can be seen from FIG. 1 of Patent Document 1, the air purifying unit described in Patent Document 1 is of a type placed on the floor. If the capacity is not quite strong, the purified air will not spread throughout the room, resulting in poor purification efficiency. In addition, when the air cleaning unit described in Patent Document 1 is placed on the floor of a room and used, it gives a visually disturbing feeling to the people staying in the room, and also physically disturbs when vacuuming. Become.

The present invention has been invented in view of the above points, and is an air purifying device that has a simple structure, is easy to install, does not get in the way when installed, and is capable of efficiently purifying indoor air. and to provide a method for purifying indoor air.

In order to achieve the above object, the air purifying device of the present invention can be attached to a corner portion formed by a ceiling and a wall in a room, and when attached to the corner portion, it can Alternatively, a housing provided with an air inlet opening to both sides and an air outlet opening toward the ceiling, and a ventilation flow path formed between the air inlet and the air outlet, and the air flow path in the housing. and a photocatalyst active material placement portion provided on an ultraviolet light receiving surface capable of receiving ultraviolet rays emitted from the ultraviolet light source portion in the housing.

Here, since the housing can be attached to the corner formed by the ceiling and the wall in the room, the air purifying device is installed in a place that is inconspicuous in the room and suitable for taking in and circulating indoor air. be able to. In addition, the above-mentioned corners are usually dead spaces that are used, and because of their location, they do not interfere with cleaning the room or visually, and there is a possibility that dust from the floor will be sucked into the housing. is also low.

Since the housing is provided with the suction port, it is possible to take indoor air present in the vicinity of either or both of the lower side and the side into the housing when the housing is attached to the corner portion. Further, since the housing is formed with the ventilation flow path, the air taken in from the suction port can be sent to the blowout port. Since the housing is provided with the air outlet, the air in the housing can be blown out toward the ceiling in the state of being attached to the corner portion.

The ultraviolet light source section is provided in the middle of the ventilation flow path inside the housing, so that it can irradiate the air that has flowed in from the suction port with ultraviolet rays. By irradiating with ultraviolet rays, the bacteria and viruses contained in the air are killed (sterilization / virucidal), and the air is purified.

When the photocatalytic active substance placement part receives the ultraviolet rays emitted from the ultraviolet light source part, a photocatalytic reaction occurs, and the action of active oxygen, etc., caused by this reaction kills bacteria and viruses contained in the air (sterilization / viricidal), the air is purified. In addition, the photocatalytic active substance placement portion may be any mode in which the photocatalytic active substance is placed in the housing, for example, a mode in which a coating material containing the photocatalytic active substance is applied to the inner surface of the housing, or a photocatalytic active substance is included Examples include a mode in which a member such as a plate is arranged inside the housing.

That is, inside the housing, the dual action of ultraviolet rays and active oxygen, etc., makes the air highly effective in sterilization and virucidal. In addition, since active oxygen or the like rapidly loses its toxicity to the human body when it is sent indoors after sterilization and virus killing, the possibility of health hazards to those staying indoors is extremely low.

When the ultraviolet light source unit is activated, it generates heat, the surrounding air warms up, and the ultraviolet light source unit is sent out of the housing through the outlet. As a result, the inside of the housing becomes negative pressure, and air flows in from the suction port, and the inflowing indoor air is sterilized and virucidal in the housing, is heated, and is sent out of the housing from the blowout port. In other words, according to the air purifier of the present invention, this cycle continues while the ultraviolet light source is activated, and the air can be cleaned even when the air supply unit such as the fan is not used. can. In addition, in the case of a configuration that does not use an air supply unit such as a fan, there is no draft feeling or air blowing sound that is seen in air conditioners, etc., and it is possible to make it difficult for people staying in the room to feel a sense of discomfort.

Furthermore, since the air outlet is open toward the ceiling, purified and warmed purified air circulates into the room along the ceiling. On the other hand, since the room air before purification is relatively lower in temperature than the purified air, the structure is such that the room air is easily taken in from the suction port that is located in the lower part of the room and opens downward or sideways.

Since the air purifying device of the present invention has the above-described structure, it can be easily installed by simply attaching it to the corner formed by the ceiling and wall of the room, without requiring large-scale construction work such as forming a duct. It has become. Furthermore, the air purifying device of the present invention is capable of efficiently purifying indoor air while having the above-described simple structure.

Further, the present invention further comprises a rectifying plate arranged in the ventilation flow path, at least a first surface of the rectifying plate facing the ultraviolet light source portion becomes a surface capable of receiving ultraviolet rays, and the first surface is provided with a photocatalytic active substance placement portion. In this case, the flow of air from the suction port to the blowout port becomes smoother due to the rectifying plate (rectifying effect). In addition, since the rectifying plate is provided with the photocatalyst active material placement portion in the manner described above, in addition to the rectifying effect in the housing described above, the efficiency of generating active oxygen and the like is further improved. .

Further, the housing has a structure having a first wall portion whose outer surface shape is along the wall, a second wall portion whose outer surface shape is along the ceiling, and a third wall portion whose shape is inclined from the ceiling toward the wall direction. In this case, it is possible to make it difficult to see that the air purification device is installed (in other words, it is difficult to see that it is installed).

As a result, the air purifying device of the present invention has a natural appearance integrated with the ceiling and wall surfaces when installed in the ceiling corner of the room, and can improve the aesthetic appearance of the ceiling corner. It has a structure that makes it difficult for residents to feel uncomfortable with the interior (which can also be called the "interior exterior") through their eyes.

More specifically, since the first wall portion described above has an outer surface shape along the wall, it is difficult for a gap to occur between the housing and the wall, and the housing and the wall can be integrated in appearance. In addition, since the second wall portion described above has an outer surface shape along the ceiling, it is difficult for a gap to occur between the housing and the ceiling, and the housing and the ceiling can be integrated in appearance. Furthermore, since the third wall portion described above has a shape that slopes from the ceiling toward the wall direction, it gives a visual impression as if the corner portion of the ceiling in the room had been formed obliquely from the beginning. The interior will look natural as if no equipment were installed.

All or part of the outer surface of the housing may have a color or pattern, or may have a color or pattern that is common to either one or both of the ceiling and the wall. Examples of means for adding colors or patterns to the outer surface of the housing include attaching a sheet and painting. In addition, if the ceiling and walls are left as concrete concrete (so-called bare concrete), all or part of the outer surface of the housing may be pasted or painted with a color tone and pattern similar to the concrete surface. .

In addition, the rectifying plate is formed with a plurality of holes penetrating in the plate thickness direction, and the second surface, which is the back surface of the first surface, is also provided with a photocatalytically active substance placement portion. A structure having a first wall portion having an outer surface shape along the wall, a second wall portion having an outer surface shape along the ceiling, and a third wall portion having a shape inclined from the ceiling toward the wall direction, the third wall portion However, when it is arranged substantially parallel to the rectifying plate and a light reflecting portion is provided on the surface facing the rectifying plate, the generation efficiency of active oxygen and the like can be further improved.

Specifically, the ultraviolet light emitted from the ultraviolet light source is first received by the first surface of the rectifying plate, and a photocatalytic reaction occurs in the photocatalyst active material arrangement portion provided on the same surface to generate active oxygen and the like. Next, the ultraviolet light that has passed through each hole formed in the straightening plate is reflected by the light reflecting portion that is arranged substantially parallel to the straightening plate and faces the straightening plate, and is received by the second surface of the straightening plate. A photocatalytic reaction occurs at the photocatalytically active substance placement portion provided in the inner wall of the housing, generating active oxygen and the like.

As described above, according to the air purifier having the rectifying plate of this configuration, a photocatalytic reaction occurs on the first surface and the second surface of the rectifying plate (in other words, both the front and back surfaces of the rectifying plate) to generate active oxygen and the like, The generation efficiency of active oxygen and the like is further improved. Note that the effects of the first wall portion, the second wall portion, the third wall portion, and the rectifying plate of the housing are as described above, and therefore the description thereof will be omitted.

In addition, the outer surface of the third wall portion is coated with a sheet of the same type or similar to the interior wallpaper, a sheet with a wood grain pattern, or a color or wood grain pattern that is the same color or similar to the interior wallpaper. When the air purifying device of the present invention is installed in the ceiling corner part of the room, the ceiling corner part has a natural appearance integrated with the ceiling part and the wall part. The aesthetic appearance of the interior can be improved, and by extension, the structure is such that the interior occupants are less likely to feel uncomfortable with the interior through their eyesight.

More specifically, if a sheet of the same kind as the interior wallpaper is attached to the outer surface of the third wall portion described above, or if it is painted in the same color as the interior wallpaper, the ceiling or wall surface, or the ceiling and wall surface Then, when the interior wallpaper is similar to the interior, the interior occupants are less likely to feel uncomfortable with the interior through their eyes, and the ceiling corners can be made to have an improved aesthetic appearance. In particular, if the same sheet as the room wallpaper is attached, it is sufficient to simply attach the same sheet as the room wallpaper, so that the workability is good with a simple means, and the texture is highly reproducible.

Then, in a mode in which a sheet similar to the indoor wallpaper is attached to the outer surface of the third wall portion described above, or in a mode in which the outer surface of the third wall portion is painted in a color similar to the indoor wallpaper, the outer surface of the third wall portion is the ceiling. Alternatively, the interior can be similar to the wall surface or the ceiling and the wall surface, so that the interior occupants are less likely to feel uncomfortable with the interior through their eyes, and the aesthetic appearance of the ceiling corner can be improved. In particular, in the case where a sheet similar to indoor wallpaper is attached, it is sufficient to simply attach the sheet.

Furthermore, if the outer surface of the third wall portion described above is attached with a sheet with a wood grain pattern, or is painted with a wood grain pattern, the ceiling or wall surface, or the interior with wood grain appearing on the ceiling and wall surface When , it is possible to provide a structure in which the interior occupants are less likely to feel uncomfortable with the interior through their eyes, and the aesthetics of the ceiling corners are improved.

In addition, at least the shape of the inner wall portion of the housing facing the ventilation channel is a horizontal waveform in which concave portions and convex portions in the vertical direction intersecting the forming direction of the corner portions are continuous, or the corner portions are formed. In the case of a vertical waveform in which concave portions and convex portions in the horizontal direction that are substantially parallel to each other are continuous along the direction, it is possible to improve the smoothness of ventilation inside the housing.

More specifically, when the shape of the inner wall portion of the housing facing at least the ventilation channel is a horizontal waveform in which concave portions and convex portions in the vertical direction intersecting the forming direction of the corner portions are continuous, The air in the housing, which is directed from the open suction port to the ceiling-opening air outlet, smoothly rises along the horizontal corrugated surface of the inner wall portion of the housing.

In particular, when the shape of the inner wall portion of the housing facing at least the ventilation flow path is a vertical waveform in which concave portions and convex portions in the horizontal direction substantially parallel to the formation direction of the corner portions are continuous, the lateral The air taken into the housing from the suction port opening toward the outside flows smoothly along the longitudinally wavy surface of the inner wall portion of the housing.

Thus, according to the air purifier of this configuration, it is possible to improve the smoothness of ventilation in the housing.

In addition, when the photocatalytic active substance is applied to the convex portion to constitute the photocatalytic active substance placement portion, and the concave portion is a non-coated portion of the photocatalytic active substance capable of reflecting ultraviolet rays, the ultraviolet rays and active oxygen etc. The efficiency of the air's bactericidal and virucidal effect is further improved.

Specifically, since the photocatalytic active material is applied to the convex portion to constitute the photocatalytic active substance arrangement portion, the convex portion receives the ultraviolet rays emitted from the ultraviolet light source portion and causes a photocatalytic reaction. The air is purified with the bactericidal and virucidal action of active oxygen and the like.

The concave portions diffusely reflect the received ultraviolet rays. As a result, the air in the housing is not only directly irradiated with ultraviolet rays from the ultraviolet light source, but also indirectly irradiated with ultraviolet rays diffusely reflected in the concave portions, further improving the efficiency of sterilization and viricidal action by ultraviolet rays.

As described above, according to the air purifying device of this configuration, the efficiency of the sterilizing effect and the virucidal effect of the air by ultraviolet rays, active oxygen, etc. is further improved.

In addition, at least the shape of the inner wall portion of the housing facing the ventilation channel, or at least the shape of the rectifying plate facing the ventilation channel, has a continuous concave portion and convex portion in the vertical direction intersecting the forming direction of the corner portion. or a vertical waveform in which concave portions and convex portions in the horizontal direction are continuous along the direction of formation of the corner portions, and a photocatalytic active substance is applied to the convex portions. When the arrangement portion is formed and the concave portion is a non-coated portion of the photocatalytic active substance capable of reflecting ultraviolet rays, the smoothness of ventilation in the housing can be improved, and the ultraviolet rays and active oxygen etc. The efficiency of the air's bactericidal and virucidal effect is further improved.

Specifically, at least the shape of the inner wall portion of the housing facing the ventilation channel, or at least the shape of the current plate facing the ventilation channel, has concave portions and convex portions in the vertical direction intersecting the forming direction of the corner portions. In the case of continuous horizontal waveforms, particularly, the air in the housing that flows from the downwardly-opening suction port to the ceiling-opening air outlet is directed to the horizontal-waveformed surface of the above-described inner wall portion of the housing or the rectifying plate. The flow rising along becomes smooth.

At least the shape of the inner wall portion of the housing facing the ventilation flow path, or at least the shape of the rectifying plate facing the ventilation flow path, is substantially parallel to the formation direction of the corner portion, and the concave portion and the convex portion in the horizontal direction are formed. In the case where the portion has a continuous vertical waveform, the air taken into the housing from the side-opening suction port flows smoothly along the above-mentioned inner wall portion of the housing or the longitudinally wavy surface of the rectifying plate. do.

Furthermore, since the photocatalytic active material is applied to the convex portion to constitute the photocatalytic active material placement portion, the convex portion receives the ultraviolet rays irradiated from the ultraviolet light source portion and a photocatalytic reaction occurs, thereby resulting in activation. The air is purified with the bactericidal and virucidal action of oxygen and the like. The concave portions diffusely reflect the received ultraviolet rays. As a result, the air in the housing is not only directly irradiated with ultraviolet rays from the ultraviolet light source, but also indirectly irradiated with ultraviolet rays diffusely reflected in the concave portions, further improving the efficiency of sterilization and viricidal action by ultraviolet rays.

Thus, according to the air purifying device of this configuration, it is possible to improve the smoothness of ventilation in the housing, and the efficiency of the air sterilizing effect and the viricidal effect due to ultraviolet rays, active oxygen, etc. is further improved. there is

In addition, when a blower having a function of blowing the air in the housing toward the blowout port is further provided, the blower is provided to forcibly circulate the air in the housing toward the blowout port. be able to. As a result, the inside becomes negative pressure, and the speed at which the room air is taken in from the suction port increases, and the speed at which the purified air is sent out from the housing increases. Circulation in the room further increases the speed and efficiency with which the room air is purified.

In addition, the motion sensor and the same person sensor are connected, and when the same person sensor detects that the room is occupied, the blower unit is activated, and when the same person sensor cannot detect the room occupied state, the same blower unit is operated. and an operation switching unit that stops the operation, the operation switching is automatically performed, thereby achieving energy saving while achieving sufficient indoor air purification.

More specifically, when a person enters the room, the human sensor senses that the room is occupied, and the air blower operates via the operation switching unit connected to the human sensor. As described above, the air purifying device of the present invention in which the air blowing unit is operated improves the speed at which indoor air is taken in from the suction port, the speed at which purified air is sent out from inside the housing, and the speed at which the sent purified air is vigorous. Indoor circulation further improves the speed and efficiency with which indoor air is purified compared to indoor unoccupied conditions.

Note that the operation switching unit stops the operation of the air blower in an indoor unmanned state in which a person cannot be detected before entering the room and after leaving the room, so power consumption for operating the air blower can be suppressed. When the room is unmanned, the cycle of natural air cleaning only by the heat generated by the ultraviolet light source described above continues, and the air is cleaned even in an unmanned room. As a result, the person entering the room next time can stay in an atmosphere of already purified air.

As described above, according to the air purifying device having the motion sensor and the operation switching unit according to the present configuration, it is possible to achieve energy saving while sufficiently purifying the air in the room.

In order to achieve the above object, the indoor air purification method of the present invention uses an air purification device attached to the corner formed by the ceiling and wall of the room, and the lower and side of the air purification device. an air inflow step in which air flows into the air purifying device from a suction port that opens to either or both of them; an air purification step of sterilizing and sterilizing the air by means of a photocatalytic reaction generated by receiving the ultraviolet rays irradiated by the photocatalytic active material arrangement portion provided in the air purifier so as to be capable of receiving the ultraviolet rays; and an air outflow step of causing the purified air that has undergone the air purification step to flow into the room from an air outlet opening toward the ceiling of the air purification device.

Here, in the indoor air purification method of the present invention, the air purification device to be used is attached to the corner formed by the ceiling and wall of the room, making it inconspicuous in the room and suitable for taking in and circulating indoor air. An air purifier can be installed at the location.

In the air inflow step, room air existing near either or both of the lower side and the side of the air purifier can be taken into the air purifier through the suction port. At this time, since the room air before purification is relatively lower in temperature than the purified air, it is located in the lower part of the room and is easily taken in from the suction port arranged as described above.

In the air purification process, the air is sterilized and virucidal in the housing by the dual action of ultraviolet rays and active oxygen generated in the housing. Active oxygen or the like rapidly loses its toxicity to the human body when it is sent indoors after sterilization and virus killing, so the possibility of health hazards to those staying indoors is extremely low.

Note that the ultraviolet rays are emitted from the ultraviolet light source. Active oxygen or the like is generated by a photocatalytic reaction that occurs in the photocatalytic active material placement portion that receives the ultraviolet rays emitted from the ultraviolet light source portion.

In the air outflow process, the purified air that has undergone the above-described air purification process can be discharged into the room from the air outlet, and the purified air circulates in the room along the ceiling.

When the ultraviolet light source section is activated, it generates heat, the ambient air warms up, and the ultraviolet light is sent out of the air purifier through the outlet. As a result, the inside of the air purifying device becomes negative pressure, and air flows in from the suction port. sent out. In other words, according to the air purifier, this cycle continues while the ultraviolet light source is activated, and the air can be cleaned even when the air supply unit such as the fan is not used. In addition, in the case of a configuration that does not use an air supply unit such as a fan, there is no draft feeling or air blowing sound that is seen in air conditioners, etc., and it is possible to make it difficult for people staying in the room to feel a sense of discomfort.

According to the method for purifying indoor air of the present invention, it is possible to efficiently purify indoor air while using an air purifying device that has a simple structure and is easy to construct.

INDUSTRIAL APPLICABILITY According to the air purifier and indoor air purifying method of the present invention, the structure is simple and construction is easy, and indoor air can be efficiently purified without being an obstacle when installed. .

BRIEF DESCRIPTION OF THE DRAWINGS It is perspective explanatory drawing which shows the state which installed the air purifier (1st Embodiment) which concerns on this invention indoors. 1, (a) is a perspective view of the air purification device, (b) is an exploded view of the air purification device, and (c) is the width of the air purification device. It is a direction sectional view. FIG. 2 is an explanatory diagram of the usage state of the air purification device shown in FIG. 1, (a) showing the air flow in forced convection operation in a manned indoor state, and (b) showing the air flow in natural convection operation in an unmanned indoor state. ing. It is a perspective explanatory view which shows the state which installed the modification (modification 1) of the air purification apparatus shown in FIG. 1 in the room. It is a modification (modification 2) of the air purifying device shown in FIGS. 1 and 2 and a usage state explanatory diagram thereof, (a) shows the flow of air in forced convection operation in an indoor manned state, (b) is an indoor 1 shows the air flow in natural convection operation in an unmanned state. 2, (a) shows a horizontal waveform according to Modification 3, (b) shows a longitudinal waveform according to Modification 4, and (c) shows a modification of Modification 3 (modification Example 5) shows an aspect, and (d) shows an aspect according to a variation of variation 4 (variation 6). It is a modified example of the lid plate shown in FIG. It is a modified example (modified example 9) of the housing shown in FIG. It is an embodiment in which the shape is substantially semicircular. 2 shows a modification (modification 10) of the air purifying device of FIG. 1, where (a) is a perspective view of the air purifying device and (b) is a cross-sectional view of the air purifying device in the width direction.

Embodiments of the present invention and modifications thereof will be described in further detail with reference to FIGS. 1 to 9. FIG. The following description will be given in the order of the first embodiment of the present invention, the method for purifying indoor air, and modified examples 1 to 10. In addition, the reference numerals in each figure of the drawings are attached within the scope of reducing complexity and facilitating understanding. .

[First embodiment]
(Air purification device 1)
1 to 3, an air purifier 1 that is one embodiment (first embodiment) of the present invention will be described. The air purification device 1 can be attached to a corner portion 93 formed by the ceiling 91 and the wall 92 of the room 9 (see FIG. 1), and includes the housing 2, the ultraviolet light source section 3 provided in the housing 2, It has a rectifying plate 4, a photocatalytically active substance placement portion 41, a blower portion 5, and operation switches (not shown) for the ultraviolet light source portion 3 and the blower portion 5 (see FIGS. 2(b) and 2(c)). Each part will be described in detail below.

(Case 2)
The housing 2 is a box made of metal (made of stainless steel in this embodiment), and has a main body 21 with one long side opening (opening 211) and a lid 23 covering the opening 211. . The body portion 21 and the lid portion 23 are made of a material that blocks ultraviolet rays, and have a structure in which the ultraviolet rays generated from the ultraviolet light source portion 3 inside are not directly irradiated into the room. In addition, the body portion 21 has an air introduction opening 212 formed on one of its short sides (see FIG. 2).

The housing 2 has a hexagonal shape when viewed from the short side direction, and includes a back plate portion 213 located in the opposite direction to the opening 211 and a first opening rising from the back plate portion 213 at an obtuse angle (135 degrees in this embodiment). An intermediate plate 214, a second intermediate plate 215 rising from the back plate portion 213 at an obtuse angle (135 degrees in this embodiment) in the opposite direction to the first intermediate plate 214, and an obtuse angle (135 degrees in this embodiment) from the first intermediate plate 214. The first side plate 216 rises in the direction opposite to the back plate portion 213 at an inclination of 135 degrees in this embodiment, and the second side plate 216 rises from the second intermediate plate 215 at an obtuse angle (135 degrees in this embodiment) in the opposite direction to the back plate portion 213 . 2 side plates 217 (see FIG. 2(c)).

In the housing 2, the first intermediate plate 214 corresponds to the above-described first wall portion, the second intermediate plate 215 corresponds to the above-described second wall portion, and the lid portion 23 corresponds to the above-described third wall portion. Equivalent to. The first intermediate plate 214 is a flat plate having an outer shape along the wall 92 , and the second intermediate plate 215 is a flat plate having an outer shape along the ceiling 91 . The lid portion 23 has a shape that slopes from the ceiling 91 toward the wall 92 when the air purification device 1 is attached to the corner portion 93 (see FIG. 3).

The housing 2 has screw holes 218 formed in both corners near the opening 211 on the short side (see FIG. 2(b)).

The lid portion 23 has a decorative plate portion 231 , a pair of connecting piece portions 232 provided on both short side portions on the back side of the decorative plate portion 231 , and a light reflecting portion 234 . Both of the long side portions of the decorative plate portion 231 are bent toward the main body portion 21 at an obtuse angle when the decorative plate portion 231 is attached to the main body portion 21 . Each connecting piece 232 has two screw holes 233 near both ends in the width direction (see FIGS. 2B and 2C).

The light reflecting portion 234 is provided on the back surface of the decorative plate portion 231 and faces the inside of the housing 2 when the lid portion 23 is attached to the housing 2 .

In the lid portion 23 , the connecting piece portion 232 is fitted to the opening portion 211 of the housing 2 , the position is aligned so that the screw hole 218 and the screw hole 233 communicate, and the mounting bolt 24 is inserted into the screw hole 218 and the screw hole 233 . Attach and integrate (see FIGS. 2(a) and 2(b)).

When the lid portion 23 is attached to the housing 2, a pair of elongated openings are formed between the long side portion of the rim of the opening 211 of the housing 2 and the back side of the lid portion 23 (hereinafter referred to as The opening formed on the first side plate 216 side is called a long side first opening 219, and the opening formed on the second side plate 217 side is called a long side second opening 220) (Fig. 2(a) ( c) see).

The first long-side opening 219 and the second long-side opening 220, when the air purifying device 1 is attached to the corner portion 93, have a downwardly opening side that serves as the aforementioned suction port (which becomes an outlet during forced convection). , the side opening in the direction of the ceiling 91 serves as the above-described outlet. In the housing 2, the space between the first long-side opening 219 and the second long-side opening 220 serves as the above-described ventilation flow path (see FIG. 3).

(Ultraviolet light source unit 3)
An ultraviolet light source unit 3 is provided in the middle of the above-described ventilation flow path inside the housing 2 . In this embodiment, the ultraviolet light source section 3 is attached to the back plate section 213 and has a fluorescent tube mounting section 31 and an ultraviolet fluorescent tube 32 (see FIGS. 2B and 2C). The fluorescent tube mounting portion 31 has a general structure including a base, a lamp socket provided in the base, a ballast, a lighting circuit, and the like. The ultraviolet fluorescent tube 32 is a so-called germicidal lamp, and is of a cold cathode fluorescent lamp type capable of efficiently emitting ultraviolet rays with a wavelength of 254 nm having strong bactericidal and virucidal action.

(Rectifier plate 4)
The rectifying plate 4 is arranged in the housing 2 between the ultraviolet light source section 3 and the lid section 23 (in other words, the above-described ventilation flow path). The rectifying plate 4 is attached so as to be held between the ultraviolet light source portion 3 and the lid portion 23 in the main body portion 21 via the attachment angle 221 (see FIGS. 2(b) and 2(c)).

The rectifying plate 4 is a plate having a plurality of holes penetrating in the plate thickness direction, and having photocatalytically active material layers arranged on both front and back surfaces (corresponding to the first and second surfaces described above). In the present embodiment, the photocatalytically active substance placement portion is formed of a layer containing titanium oxide, but it may be made of tungsten oxide or the like.

The rectifying plate 4 has a surface (first surface) facing the ultraviolet light source section 3 that can receive ultraviolet rays. That is, in the present embodiment, the straightening plate 4 has an "ultraviolet light receiving surface capable of receiving ultraviolet rays emitted from the ultraviolet light source section in the housing", Equivalent to.

The current plate 4 is arranged substantially parallel to the lid portion 23 , and the surface (second surface) that is the back surface of the first surface faces the light reflecting portion 234 of the lid portion 23 . The ultraviolet light emitted from the ultraviolet light source unit 3 passes through the holes of the rectifying plate 4 and is reflected by the light reflecting unit 234 to hit the rear surface (second surface) of the rectifying plate 4. The two surfaces also constitute a surface capable of receiving ultraviolet rays (see FIG. 2(c)).

(Blower unit 5)
The air blowing part 5 is arranged in the housing 2 between the short side surfaces of the ultraviolet light source part 3 and the main body part 21 and in the vicinity of the air introduction opening 212 formed in the short side surface. The air blowing unit 5 has a structure that has a blowing function of supplying indoor air into the housing 2 through the air introduction opening 212 during operation and blowing the air in the housing 2 toward the blow outlet ( See FIG. 2(b)).

Although illustration is omitted, the air purifier 1 has a power distribution unit for driving the ultraviolet light source unit 3 and the blower unit 5, and the power distribution unit has a power cord with an outlet for connecting to a household power source. is provided.

In this embodiment, the ultraviolet fluorescent tube 32 is used as the ultraviolet light source unit 3, but it is not limited to this. As long as it can radiate ultraviolet rays in the range, it does not exclude the light bulb type and the LED type. In addition, in the case of the LED type, since the amount of heat generated is small and natural convection cannot be expected, it is preferable to provide the air blower 5 .

In this embodiment, as shown in FIGS. 1 and 3, the first long-side opening 219 is the above-described suction port, and the second long-side opening 220 is the above-described blowout port, but it is not limited to this. However, for example, in another state in which the air purifying device 1 is attached to the corner portion 93 upside down, the long side first opening 219 becomes the above-mentioned outlet, and the long side second opening 220 becomes the above-mentioned suction port. It can also be the mouth.

(Action/Indoor air purification method)
1 to 3, the effect of the air purifier 1 and the method for purifying the air in the room 9 will be described. In the method for purifying the air in the room 9, an air purifying device attached to a corner portion 93 formed by the ceiling 91 and the wall 92 of the room 9 is used.

Since the first intermediate plate 214 of the housing 2 has an outer surface shape along the wall 92 when the air purification device 1 is installed in the corner portion 93 of the room 9, a gap is generated between the housing 2 and the wall 92. Therefore, the housing 2 and the wall 92 can be unified in appearance. In addition, since the second intermediate plate 215 of the housing 2 has an outer surface shape that follows the ceiling 91, it is difficult for a gap to occur between the housing 2 and the ceiling 91, and the housing 2 and the ceiling 91 can be unified in appearance. can be made. Furthermore, since the housing 2 has a shape in which the lid portion 23 is inclined from the ceiling 91 toward the wall 92, it gives a visual impression as if the corner portions 93 were formed obliquely from the beginning.

In other words, in the installed state, the air purifier 1 has a natural appearance integrated with the ceiling 91 and the wall 92, making it inconspicuous and improving the aesthetics of the corner 93 of the ceiling, which in turn improves the appearance of the room. The structure is such that the interior (indoor exterior) does not feel uncomfortable to the human eye.

Also, the corner part 93 is usually a dead space, but by using it as an installation place of the air purifying device 1, it does not become a hindrance visually and positionally, and does not interfere with the normal cleaning of the room 9. - 特許庁The installed air purifying device 1 has a low possibility of sucking dust on the floor surface due to its position, and as shown in FIG. It is an arrangement location suitable for

The housing 2 is provided with the long-side first opening 219 and the air-conducting opening 212 as the suction port. Room air A2 present in the vicinity can be taken into the housing 2 (air inflow step; see FIGS. 3(a) and 3(b)). In addition, the housing 2 is provided with the second long-side opening 220 which is a blowout port, so that the air inside the housing 2 can be sent out in the direction of the ceiling 91 in the state of being attached to the corner portion 93. can be done. In addition, at the time of forced convection operation, the long-side first opening 219 also serves as an air outlet (see FIG. 3A).

In the housing 2, the space from the first long side opening 219 to the second long side opening 220, the space from the air introduction opening 212 to the second long side opening 220 (during forced convection operation, , including the space from the air introduction opening 212 to the long side first opening 219) serves as the ventilation flow path. By forming the same ventilation flow path, the air taken in from the long side first opening 219 and the air introduction opening 212 that are the suction ports is transferred to the long side second opening 220 that is the blowing port (forced convection operation). sometimes also to the long side first opening 219).

The ultraviolet light source unit 3 provided in the middle of the ventilation flow path inside the housing 2 can irradiate the indoor air A2 that has flowed in from the suction port with ultraviolet rays. By irradiating with ultraviolet rays, the bacteria and viruses contained in the indoor air A2 are killed (sterilization/virucidal), and the air is purified.

In addition, the ultraviolet light source unit 3 generates a small amount of ozone by its operation, and in addition to the sterilization and viricidal effects by direct irradiation of ultraviolet rays, the sterilizing, viricidal and deodorizing effects are added by the action of ozone.

Since the ultraviolet light source part 3 of the air purifying device 1 is surrounded by the housing 2, the ultraviolet light does not leak, and the minute amount of generated ozone is reduced to oxygen, which adversely affects the people in the room and the interior. It has a very low chance of giving.

Further, the rectifying plate 4 arranged in the ventilation flow path extends from the first long-side opening 219 and the air introduction opening 212 as the suction port to the second long-side opening 220 as the air outlet (during forced convection operation). (also in the long side first opening 219) is further smoothed (rectification effect).

The rectifying plate 4 receives the ultraviolet rays emitted from the ultraviolet light source unit 3 on the surface (first surface) facing the ultraviolet light source unit 3, and the photocatalytic active material in the photocatalytic active material placement unit provided on the same surface is It is activated by being excited by ultraviolet rays, ionizes components in the surrounding air, etc., and generates ions, radicals, etc. (photocatalytic reaction). With the action of active oxygen or the like generated by this photocatalytic reaction, the bacteria and viruses contained in the air are killed (sterilization/virucidal), and the air is purified.

That is, in the housing 2, the double action of ultraviolet rays, active oxygen, etc. (triple action when ozone is added) makes the bactericidal and virucidal effects of the air extremely high. In addition, active oxygen and the like rapidly lose their toxicity to the human body when sent into the room as purified air A1 and A3 after sterilization and viricidal, so the possibility of health hazards to those staying indoors is extremely low. .

In addition, according to the straightening plate 4 , the ultraviolet rays emitted from the ultraviolet light source section 3 pass through the holes of the straightening plate 4 , are reflected by the light reflecting portions 234 , and hit the rear surface (second surface) of the straightening plate 4 . . Since the rectifying plate 4 is also provided with a photocatalytically active substance arrangement portion on its back surface (second surface), a photocatalytic reaction also occurs on the same surface. In other words, the bactericidal and virucidal effects of the reflected ultraviolet rays and active oxygen are also applied to the air in the area between the current plate 4 and the lid portion 23 .

That is, in the housing 2, the ultraviolet light source section 3 and the rectifying plate 4 (the photocatalytic active substance placement section thereof) cooperate with each other to perform an air purification process.

Further, the second long-side opening 220, which is the air outlet, opens toward the ceiling 91, so that the purified air A1 that has been purified and warmed by the ultraviolet light source 3 circulates in the room 9 along the ceiling 9. do. On the other hand, since the indoor air A2 before purification is relatively lower in temperature than the purified air A1, it is located below the ceiling 91 of the room 9, and the long side first opening 219 which is a suction port opening downward. And, it is easy to take in from the air introduction opening 212 which is a suction port opening to the side (air outflow process, see FIGS. 3(a) and 3(b)).

<No people in the room>
Please refer to FIG. The air purification device 1 operates only the ultraviolet light source unit 3 and stops the operation of the blower unit 5, for example, before a person enters the room and after the person leaves the room. Thereby, the power consumption for operating the air blower 5 can be suppressed. This operating state can also be rephrased as "natural convection operation".

In a state in which only the ultraviolet light source unit 3 is operated, the ultraviolet light source unit 3 generates heat, the surrounding air is warmed and rises, and the purified air is discharged from the second long side opening 220, which is an outlet opening upward. As A1, it is sent out of the housing 2 and toward the ceiling. As a result, the inside of the housing 2 becomes negative pressure, and the room air A2 naturally flows in from the long side first opening 219 (also from the air introduction opening 212) which is the suction port. The indoor air A<b>2 that has flowed in is sterilized and virucidal in the housing 2 , is warmed, and is sent out of the housing 2 through the second long-side openings 220 .

That is, according to the air cleaner 1, this cycle continues while the ultraviolet light source section 3 is in operation, and the air can be cleaned without operating the air supply section 5. As a result, a person entering the room 9 next time can stay in an atmosphere of already purified air.

It should be noted that the operation in which only the ultraviolet light source unit 3 is operated may be performed not only in an indoor unmanned state but also in an indoor manned state. In this case, since there is no feeling of draft or sound of blowing air, it is difficult for the occupants staying in the room to feel a sense of discomfort, and it is suitable for sleeping, resting, working, studying, or otherwise concentrating on work.

<Indoor Manned State>
Please refer to FIG. The air purification device 1 operates the ultraviolet light source unit 3 and the blower unit 5 when a person enters the room 9 or is in the room. The air in the housing 2 is forcibly circulated in the direction of the outlet by the air blowing generated by the operation of the air blowing unit 5, and the air in the housing 2 is sent out to create a negative pressure in the housing 2, which is the suction port. The speed at which the indoor air A2 is taken into the housing 2 via the air opening 212 increases.

The air in the housing 2 is purified by the action (bactericidal/viricidal) of the ultraviolet light source unit 3 and the like described above. Purified air A1 and A3 delivered to the outside through second long side opening 220 and first long side opening 219, which are outlets, vigorously circulate in room 9 to obtain air velocity. Compared to the unmanned state, the speed and efficiency of purifying the air in the entire room 9 are further improved. This operating state can also be rephrased as "forced convection operation".

Purified air A1 sent into the room 9 from the second long side opening 220 circulates in the room 9 along the ceiling 91 and purifies the room 9 while stirring the air in the room. Furthermore, the first long-side opening 119 serves as a blowout port during forced convection operation, and the purified air A3 sent into the room 9 from the first long-side opening 119 descends along the wall 92 and is provided downward. The air circulates in the room 9 and purifies the room 9 while agitating the air in the room 9 while purifying the door, the doorknob, and the person entering and exiting the room 9 through the door.

Thus, according to the air purifying device 1 during forced convection operation, the room 9 can be quickly purified, and the person entering the room 9 and the person staying in the room can be exposed to the atmosphere of the purified air. can stay in

Moreover, since the air purifying device 1 has the above-described structure, it can be simply attached to the corner portion 93 of the room 9, and construction is easy without large-scale construction work such as formation of ducts. Furthermore, the air purifying device 1 has a simple structure as described above, so the productivity is good, and the structure is simple, and consumables such as ultraviolet fluorescent tubes have a relatively long life (product life of about 2 years). , maintainability is also good.

That is, according to the air purifier 1 and the method for purifying the air in the room 9 using the same, the structure is simple and construction is easy, and the indoor air is efficiently purified without being an obstacle in the installation state. can be formed.

[Modification 1]
An air purifier 1a, which is a modification of the air purifier 1, will be described with reference to FIG. The air purifying device 1a includes a housing 2a, an ultraviolet light source 3, a straightening plate 4, a photocatalyst active substance arrangement portion 41, a blower 5, and operation switches (not shown) for operating the ultraviolet light source 3 and the blower 5. Since the ultraviolet light source section 3, the rectifying plate 4, the photocatalyst active material placement section 41, and the air blowing section 5 are the same as those of the air purifier 1 of the first embodiment, descriptions of their structures and effects will be omitted.

The housing 2a has a body portion 21 and a lid portion 23a. In addition, since the main body part 21 is the same as that of the air purifying device 1 of the first embodiment, the description of the structure and effects thereof will be omitted.

The lid portion 23 a has a decorative plate portion 231 a , a connecting piece portion 232 , a light reflecting portion 234 and mounting bolts 24 . Note that the connecting piece portion 232, the light reflecting portion 234, and the mounting bolt 24 are the same as those of the air purifier 1 of the first embodiment, so descriptions of their structures and effects will be omitted.

The decorative plate portion 231a corresponds to the "outer surface of the third wall portion" described above. A sheet of the same kind as the interior wallpaper attached to the ceiling 91a and the wall 92a is attached to the decorative plate portion 231a. As a result, the outer surface of the decorative plate portion 231a has the same interior decoration as the interior wallpaper attached to the ceiling 91a and the wall 92a, so that the interior occupants are less likely to feel uncomfortable with the interior through their eyes.

In other words, when the air purifying device 1a is installed in the corner portion 93, it has a natural appearance integrated with the ceiling 91a and the wall 92a, and the appearance of the ceiling corner portion is improved. Furthermore, the above-described processing of the decorative plate portion 231a is a simple means of sticking a sheet of the same type as the room wallpaper, and has good workability and high reproducibility of texture.

[Modification 2]
An air purifier 1b, which is a modification of the air purifier 1, will be described with reference to FIG. The air purification device 1b includes a housing 2b, an ultraviolet light source section 3, a straightening plate 4, a photocatalyst active material placement section 41, a blower section 5, a human sensor 60, an operation switching section (not shown), and an ultraviolet light source section 3. An operation switch (not shown) of the operation switching unit is provided. The ultraviolet light source section 3, the rectifying plate 4, the photocatalyst active material placement section 41, and the air blowing section 5 are the same as those of the air purifying device 1 of the first embodiment, so descriptions of their structures and effects will be omitted.

The housing 2b has a body portion 21b and a lid portion 23b. In addition, since the lid part 23b is the same as that of the air purifier 1 of the first embodiment, the description of the structure and effects thereof will be omitted.

The body portion 21b includes an opening (not shown), an air introduction opening 212, a back plate portion (reference numerals omitted), a first intermediate plate 214, a second intermediate plate 215, a first side plate (references omitted), a second side plate ( (not shown), first long-side opening 219, second long-side opening 220, mounting angle (not shown), air blower (not shown), human sensor 60, and operation switching unit (not shown). Of the above-described configurations, the configurations other than the motion sensor 60 and the operation switching unit (not shown) are the same as those of the air purifier 1 of the first embodiment, so description of the structure and effects will be omitted. .

The human sensor 60 is provided at a portion (the lid portion 23b in this modified example) that will be the lower portion of the housing 2b in the installed state. The location of the human sensor 60 may be either the body portion 21b or the lid portion 23b, and may be separated from the housing 2b (arranged at a distance). In addition, a plurality of motion sensors 60 may be provided, and in this case, it is possible to more finely sense whether a person is present or not.

The operation switching unit is connected to the human sensor 60, and has a function of operating the blower unit when the human sensor 60 detects that the room 9 is occupied. It has a function to stop the operation of the air blower 5 when it is impossible (that is, when the room is unmanned).

According to the motion sensor 60 and the operation switching unit, the operation switching of the air blowing unit is automatically performed, and energy saving can be achieved while achieving sufficient air purification in the room 9 .

More specifically, as shown in FIG. 5(a), when a person enters the room 9 or is in the room, the human sensor 60 senses that the room 9 is occupied. The operation switching unit that receives the signal from the automatically operates the blower unit. As described above, the air purifying device 1b with the air blower operating increases the speed of taking in the indoor air, speeds up the delivery of the purified air in the housing 2b, and vigorously circulates the delivered purified air in the room 9. By doing so, the speed and efficiency with which the indoor air is purified is further improved compared to the indoor unoccupied state.

On the other hand, in an indoor unmanned state (for example, before or after a person enters or leaves the room) when the human sensor 60 cannot detect a person in the room 9, the operation switching unit automatically stops the operation of the air blower. Thereby, the power consumption for operating the air blower can be suppressed. When the room is unmanned, the cycle of natural convection air cleaning only by the heat generated by the ultraviolet light source section 3 described above continues, and the air is cleaned even in the unmanned room 9 . As a result, a person entering the room 9 next time can stay in an atmosphere of already purified air.

[Modification 3]
With reference to Fig. 6(a) , a rectifying plate 4c, which is a modified example (modification 3) of the rectifying plate 4 of the air purification device 1, will be described. Like the straightening plate 4, the straightening plate 4c is a plate having a plurality of holes penetrating in the plate thickness direction, both front and back surfaces constituting surfaces capable of receiving ultraviolet light, and layers of photocatalytically active substances arranged on both surfaces. be. The straightening plate 4c is provided in a waveform (horizontal waveform) in its longitudinal direction (depth direction in FIG. 6(a)).

Please refer to FIG. 6(a) and FIG. The rectifying plate 4c has a shape in which concave portions and convex portions in the vertical direction are continuous, and intersects the formation direction of the corner portions 93, so that the first long side corresponding to the above-described "downwardly opening suction port" is formed. The air in the housing 2 from the opening 219 toward the long side second opening 220 corresponding to the above-described "air outlet opening in the direction of the ceiling 91" smoothly flows upward along the surface of the straightening plate 4c. become something.

[Modification 4]
A rectifying plate 4d, which is a modified example (modification 4) of the rectifying plate 4 of the air purification device 1, will be described with reference to FIG. 6(b). Like the straightening plate 4, the straightening plate 4d is a plate having a plurality of holes penetrating in the plate thickness direction, both front and back surfaces constituting surfaces capable of receiving ultraviolet rays, and layers of photocatalytically active substances arranged on both surfaces. be. The current plate 4d is provided in a wavy shape (vertical wavy shape) in its lateral direction (height direction in FIG. 6(b)).

Please refer to FIG.6(b) and FIG.3. The rectifying plate 4d has an air-conducting opening 212 corresponding to the above-described "sideways-opening suction port" by connecting a concave portion and a convex portion in the horizontal direction substantially parallel to the formation direction of the corner portion 93. The air taken into the housing 9 through the air flow smoothly in the horizontal direction along the surface of the rectifying plate 4d.

[Modification 5]
A current plate 4e, which is a modification (modification 5) of the current plate 4c, will be described with reference to FIG. 6(c). Like the straightening plate 4c, the straightening plate 4e is a transversely corrugated plate formed with a plurality of holes penetrating in the plate thickness direction and having both front and back surfaces constituting surfaces capable of receiving ultraviolet light. The rectifying plate 4e has a photocatalytic substance placement portion 41e formed by coating a photocatalytic substance on the convex portion, and a light reflecting portion 42e on the concave portion.

Please refer to FIG.6(c) and FIG.3. Like the straightening plate 4c, the straightening plate 4e has a smooth upward flow of the air in the housing 2 from the first long side opening 219 to the second long side opening 220 along the surface of the straightening plate 4e. become a thing.

Since the rectifying plate 4e is provided with the photocatalytically active substance placement portion 41e on the convex portion, the photocatalystically active substance placement portion 41e receives the ultraviolet rays emitted from the ultraviolet light source portion 3 (in the direction of the arrow), and a photocatalytic reaction occurs. The air is purified by the bactericidal and virucidal action of active oxygen and the like generated thereby.

The light reflecting portion 42e of the concave portion diffusely reflects the received ultraviolet rays. As a result, the air in the housing 2 is not only directly irradiated with the ultraviolet rays from the ultraviolet light source section 3, but also indirectly irradiated with the ultraviolet rays diffusely reflected by the light reflecting section 42e. improving.

[Modification 6]
A rectifying plate 4f, which is a modified example (modification 6) of the rectifying plate 4d, will be described with reference to FIG. 6(d). Like the straightening plate 4d, the straightening plate 4f is a longitudinally corrugated plate formed with a plurality of holes penetrating in the plate thickness direction and having both front and back surfaces constituting surfaces capable of receiving ultraviolet light. The rectifying plate 4f has a photocatalytic substance placement portion 41f formed by coating a photocatalytic substance on the convex portion, and a light reflecting portion 42f on the concave portion.

Please refer to FIG. 6(d) and FIG. 3(a). As with the straightening plate 4d, the straightening plate 4f causes the air taken into the housing 9 from the air introduction opening 212 to flow smoothly in the horizontal direction along the surface of the straightening plate 4f.

The rectifying plate 4f is provided with the photocatalytic substance arrangement portion 41f on the convex portion, so that the photocatalytic substance arrangement portion 41f receives the ultraviolet rays emitted from the ultraviolet light source portion 3 (in the direction of the arrow), and a photocatalytic reaction occurs. The air is purified by the bactericidal and virucidal action of active oxygen and the like generated thereby.

The light reflecting portion 42e of the concave portion diffusely reflects the received ultraviolet rays. As a result, the air in the housing 2 is not only directly irradiated with the ultraviolet rays from the ultraviolet light source section 3, but also indirectly irradiated with the ultraviolet rays diffusely reflected by the light reflecting section 42f. improving.

[Modification 7]
A lid portion 23g, which is a modified example (modified example 7) of the lid portion 23 of the air cleaner 1, will be described with reference to FIG. 7(a). Like the lid portion 23, the lid portion 23g has a decorative plate portion 231, a connecting piece portion 232, and a light reflecting portion 234g. The light reflecting portion 234g, which is the “inner wall portion of the housing facing the ventilation flow path” described above, is provided in a wavy shape (longitudinal wavy shape) in the lateral direction (the width direction in FIG. 7A). there is

Please refer to FIG. 7(a) and FIG. 3(a). The light reflecting portion 234g is an air introduction opening corresponding to the above-described "sidewardly opening suction port" by connecting a concave portion and a convex portion in the horizontal direction substantially parallel to the formation direction of the corner portion 93. The air taken into the housing 9 from 212 flows smoothly in the horizontal direction along the surface of the light reflecting portion 234g.

[Modification 8]
A lid portion 23h, which is a modified example (modified example 8) of the lid portion 23 of the air cleaner 1, will be described with reference to FIG. 7(b). Like the lid portion 23, the lid portion 23h has a decorative plate portion 231, a connecting piece portion 232, and a light reflecting portion 234h. The light reflecting portion 234h, which is the “inner wall portion of the housing facing the ventilation flow path” described above, is provided in a wavy shape (horizontal wavy shape) in its longitudinal direction (the width direction in FIG. 7(b)). .

Please refer to FIG. 7(b) and FIG. The light reflecting portion 234g has a shape in which concave portions and convex portions are continuous in the vertical direction, and intersects the direction in which the corner portions 93 are formed. The air in the housing 2 from the first opening 219 to the long side second opening 220 corresponding to the above-described "air outlet opening in the direction of the ceiling 91" rises along the surface of the light reflecting portion 234g. becomes smooth.

The light reflecting portion 234g and the light reflecting portion 234h may be provided in a mode in which a photocatalytic active substance is applied to the convex portion to constitute the photocatalytic substance placement portion (the concave portion is the light reflecting portion).

[Modification 9]
A modification (modification 9) of the housing 2 of the air cleaner 1 will be described with reference to FIG. FIG. 8(a) shows a mode in which the side end face shape of the housing 2i is square. FIG. 8(b) shows a mode in which the side end face shape of the housing 2j is approximately triangular, and according to this mode, it can be attached to the wall 92 and the ceiling 91. FIG. FIG. 8(c) shows a mode in which the side end face shape of the housing 2k is substantially semicircular and triangular. As described above, the shape of the housing of the air purifier 1 is not particularly limited as long as it can be attached to the ceiling or wall at the corner.

[Modification 10]
An air purifier 1m, which is a modification of the air purifier 1, will be described with reference to FIG. The air purifying device 1m includes a housing 2, an ultraviolet light source section 3, a photocatalytic substance placement section 41, and a switch for the ultraviolet light source section 3 (not shown). The housing 2 has a body portion 21m that does not have the current plate 4 and the blower portion 5, and a lid portion 23m. The lid portion 23m is provided with a photocatalyst active material placement portion 235 at a location where the light reflection portion 234 was provided in the air cleaner 1 . Note that the ultraviolet light source unit 3 and the photocatalytic substance arrangement unit 41 are the same as those of the air purifying device 1 of the first embodiment, so descriptions of their structures and effects will be omitted.

Although the air purifying device 1m cannot perform forced convection operation by operating the air blowing section like the air purifying device 1 described above, the cycle of natural convection air cleaning only by the heat generated by the ultraviolet light source 3 continues. As a result, the air in the room is cleaned, and at the same time, the power consumption caused by the air blower can be suppressed to save power. Moreover, the air purifying device 1m can be suitably used in the room where the air purifying device 1 is installed because of the above-described characteristics, when it is installed as a second device for auxiliary use.

In the lid portion 23m, the photocatalyst active material placement portion 235, which is the rear surface of the lid portion 23m and faces the ultraviolet light source portion 3, constitutes a surface capable of receiving ultraviolet rays. That is, in the present embodiment, the back surface of the lid portion 23m constitutes "an ultraviolet light-receivable surface capable of receiving ultraviolet light emitted from the ultraviolet light source section in the housing", and serves as the "photocatalytic substance placement portion" described above. Equivalent to.

The air purifying device 1m purifies the air in the housing 2m by direct irradiation of the ultraviolet light source 3, and the ultraviolet light emitted from the ultraviolet light source 3 in the housing 2m (the back surface of the lid 23m) is used as a photocatalyst. The light is received by the active substance placing portion 235 and a photocatalytic reaction occurs, and the air is purified by the bactericidal and virucidal action of active oxygen or the like generated thereby.

The terms and expressions used in the specification and claims are for the purpose of description only and are not limiting in nature. There is no intention to exclude some equivalent terms or expressions. Moreover, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention. Also, the terms first, second, etc. do not imply a degree or importance, but are used to distinguish one element from another.

1, 1a, 1b, 1m Air cleaner 2, 2a, 2b, 2i, 2j, 2k, 2m Housing 21, 21b, 21m Main body 211 Opening 212 Air introduction opening 213 Back plate 214 First intermediate plate 215 Second intermediate plate 216 First side plate 217 Second side plate 218 Screw hole 219 Long side first opening 220 Long side second opening 221 Mounting angle 23, 23a, 23b, 23g, 23h, 23m Lid 231, 231a Decorative plate Part 232 Connection Piece Part 233 Screw Holes 234, 234g, 234h Light Reflecting Part 235 Photocatalyst Active Substance Placement Part 24 Mounting Bolt 3 Ultraviolet Light Source Part 31 Fluorescent Tube Mounting Part 32 Ultraviolet Fluorescent Tube 4, 4c, 4d, 4e, 4f Straightening Plate 41 , 41e, 41f Photocatalyst active material arrangement portion 42e, 42f Light reflecting portion 5 Air blowing portion 60 Human sensor 9 Room 91, 91a Ceiling 92, 92a Wall 93 Corner A1 Purified air (Ceiling direction)
A2 Indoor air A3 Purified air (downward)

Claims (11)

A suction port that can be attached to a corner formed by a ceiling and a wall in a room, and an air inlet that opens downward and sideways or both, and an air outlet that opens toward the ceiling when attached to the corner. and a housing in which a ventilation channel is formed between the suction port and the discharge port;
an ultraviolet light source part provided in the middle of the ventilation channel in the housing;
a photocatalytic active material placement portion provided on an ultraviolet light receivable surface capable of receiving ultraviolet rays emitted from the ultraviolet light source portion in the housing;
comprising a
air purifier. Further comprising a rectifying plate arranged in the ventilation channel,
At least a first surface of the rectifying plate facing the ultraviolet light source portion is the surface capable of receiving ultraviolet rays, and the first surface is provided with the photocatalytically active substance placement portion.
The air cleaning device according to claim 1. The housing has a first wall portion having an outer surface shape along the wall, a second wall portion having an outer surface shape along the ceiling, and a third wall portion having a shape inclined from the ceiling toward the wall. is a structure having
The air cleaning device according to claim 1 or 2. The rectifying plate is formed with a plurality of holes penetrating in the plate thickness direction, and the second surface, which is the back surface of the first surface, is also provided with the photocatalytically active substance placement portion,
The housing has a first wall portion having an outer surface shape along the wall, a second wall portion having an outer surface shape along the ceiling, and a third wall portion having a shape inclined from the ceiling toward the wall. wherein the third wall portion is arranged parallel to the rectifying plate, and a light reflecting portion is provided on a surface facing the rectifying plate,
The air cleaning device according to claim 2. The outer surface of the third wall portion is coated with a sheet of the same type as the interior wallpaper, a sheet with a wood grain pattern, or the same color as the interior wallpaper or with a wood grain pattern. is any aspect of
The air cleaning device according to claim 3 or 4. At least the shape of the inner wall portion of the housing facing the ventilation channel is a horizontal waveform in which concave portions and convex portions are continuous in the vertical direction intersecting the forming direction of the corner portion, or the shape of the corner portion is It is a vertical waveform in which concave portions and convex portions in the horizontal direction parallel to the formation direction are continuous,
The air cleaning device according to any one of claims 1 to 5. The convex portion is coated with a photocatalytic active substance to constitute the photocatalytic substance placement portion, and the concave portion is a non-coated portion of the photocatalytic active substance capable of reflecting ultraviolet rays,
The air cleaning device according to claim 6. At least the shape of the inner wall portion of the housing facing the ventilation channel, or at least the shape of the rectifying plate facing the ventilation channel, has a concave portion and a convex portion in the vertical direction intersecting the forming direction of the corner portion. It is a horizontal waveform with continuous parts, or a vertical waveform with continuous concave parts and convex parts in the horizontal direction parallel to the formation direction of the corner part,
The convex portion is coated with a photocatalytic active substance to constitute the photocatalytic substance placement portion, and the concave portion is a non-coated portion of the photocatalytic active substance capable of reflecting ultraviolet rays,
The air cleaning device according to any one of claims 2 to 5. further comprising a blower having a function of blowing the air in the housing toward the outlet,
The air purifier according to any one of claims 1 to 8. and a human sensor connected to the human sensor, operating the air blower when the human sensor detects that the room is occupied, and in an unoccupied state in which the human sensor cannot detect the occupied state of the room . An operation switching unit that stops operation of the blower unit,
The air cleaning device according to claim 9. Using an air purification device attached to the corner formed by the ceiling and wall of the room,
an air inflow step in which air flows into the air purifying device from a suction port opening downward or laterally or both of the air purifying device;
Ultraviolet light emitted from an ultraviolet light source provided in the middle of a ventilation flow path communicating with the suction port, and a photocatalyst active material placement portion provided in the air purifying device so as to be capable of receiving the ultraviolet rays were irradiated. an air purification step of performing sterilization and virucidal of the air with a photocatalytic reaction caused by receiving the ultraviolet rays;
an air outflow step of causing the purified air that has passed through the air purification step to flow into the room from an air outlet opening in the ceiling direction of the air purification device;
comprising
Indoor air purification method.

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