JP2002276999A - Air ventilating-cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the inconvenience that service life is relatively short life and there are the possibility of resulting in secondary pollution through the emission of an attached odor due to physical adsorption in the adsorption method, a slow action due to its dependence on the quantity of ultraviolet rays, the time of contact with a catalyst, etc., and problems in the air-cleaning efficiency of a small-sized apparatus in the photocatalyst method, and excess ozone and sour gas generated at the time of action that the harmful to human bodies in the plasma method in conventional air cleaning devices. SOLUTION: There is provided an air ventilating-cleaning device introducing outdoor air indoors after allowing it to pass through a metal oxide filter 5 and a zeolite/photocatalyst filter 6 by a fan 8 for cleaning. The outdoor air passing through the metal oxide filter 5 and the zeolite/photocatalyst filter 6 to be cleaned is introduced into indoors, and polluted indoor air is excluded to outdoor, so as to permit the quick cleaning of the indoor air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for introducing fresh purified air, for example, air from which harmful substances such as VOC, CO, and NOx have been removed, and odors generated in a living space, for example, tobacco odor. The present invention relates to an air ventilation purification device for purifying toilet odor, garbage odor, pet odor, sweat odor and the like.

[0002]

2. Description of the Related Art Indoor air circulation type air purifying apparatuses include an adsorption method using an adsorbent, a photocatalytic method using a photocatalytic action and an adsorbent, and a plasma method using a plasma action and an adsorbent. The adsorption method is a method in which an odorous gas molecule is physically adsorbed on an adsorbent such as activated carbon and deodorized.
The photocatalytic method is a method of oxidatively decomposing malodorous components and bacteria by radicals generated by applying ultraviolet rays to the catalyst. The plasma method is a method of discharging to air taken into a device to generate ozone and oxidatively decompose odorous components and bacteria.

[0003]

However, in the adsorption method, since the physical adsorption is used, the life is relatively short, and the attached odor may be released, leading to secondary pollution. In this case, the action is slow because it depends on the amount of ultraviolet rays and the contact time with the catalyst, etc., and there is a problem with air purification efficiency in small machines. In the plasma method, excess ozone and acid gas generated during the action are harmful to the human body. There was a problem that there is.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is designed such that at least outdoor air is purified by passing through an adsorbent layer and then introduced into a room by an air intake means. Is an air-ventilation and purification device, which is passed through an adsorbent layer and purified by an exhaust means, then discharged outside or returned to the room, and naturally exhausted by indoor air or forcedly discharged by an exhaust means. I will provide a.

[0005] According to the above configuration, the purified outdoor air that has passed through the adsorbent layer is introduced into the room, and the indoor contaminated air is removed to the outside of the room. Therefore, it is possible to purify the indoor air more quickly.

[0006]

According to the first aspect of the present invention, outdoor air is purified by passing through an adsorbent layer and then introduced into a room, and indoor contaminated air is controlled by a pressure generated by introduction of the outdoor air. , Are forcibly discharged outside the room, thereby enabling more efficient indoor air purification.

According to a second aspect of the present invention, the outdoor air is introduced into the room after being purified by passing through the adsorbent layer.
Indoor contaminated air is purified after passing through the adsorbent layer and then discharged outside the room. By removing fresh air and forcibly removing indoor contaminated air, quick air purification is possible. . In addition, by purifying indoor contaminated air through the adsorbent layer and discharging it to the outside of the room, it is possible to prevent outside air pollution.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the adsorbing layer is provided with a layer made of a metal oxide on the upstream side having a high contaminant concentration and on the downstream side with activated carbon or zeolite. And a layer consisting of a photocatalyst and metal oxides to purify most of the air pollutants, including sulfur-based gases, and irradiate the downstream layer consisting of activated carbon or zeolite and the photocatalyst with light to further enhance purification performance Since both the zeolite and the activated carbon are sufficiently regenerated, high-performance air purification can be performed for a long period of time.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, by installing a heat exchanger, heat exchange between the exhaust side and the intake side is made possible, and ventilation with little heat loss is provided. While purifying the indoor air, the indoor environment can always be kept comfortable.

According to a fifth aspect of the present invention, in the first aspect of the invention, a heating means is provided.
The layer composed of activated carbon or zeolite and a photocatalyst and the layer composed of a metal oxide are heated to accelerate the oxidative decomposition reaction.

According to a sixth aspect of the present invention, in the first aspect of the present invention, a layer made of a metal oxide and activated carbon are provided by providing a dehumidifying means upstream of the adsorption layer on the intake side. Alternatively, it is possible to purify indoor air for a long period of time without lowering the contaminant-adsorbing performance of the layer composed of zeolite and photocatalyst, thereby always keeping the indoor environment comfortable.

According to a seventh aspect of the present invention, in the first aspect of the present invention, a ventilation path is provided for connecting an exhaust port for discharging indoor air and an intake port for introducing outdoor air. Indoor air can be circulated, the indoor air purification method can be changed according to the season, weather, and the degree of indoor air pollution, and the indoor environment can always be kept comfortable by always performing optimal air purification. is there.

[0013] According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the dust collecting device is provided on the upstream side of the contaminated air with respect to the contaminated air, so that the adsorbing layer is provided. It can be prevented from being contaminated by mist-like substances such as smoke and dust, and can maintain high purification performance for a long period of time.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of an air ventilation / purification device according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an outer casing, one of which is provided with an air inlet 2 and the other is provided with an air inlet 3. A blower 8, a dust collecting filter 4, a purifying filter made of metal oxide 5, a light source 7, a purifying filter 6 made of activated carbon or zeolite and a photocatalyst are arranged in this order from the intake port 2 side.
Is provided.

The dust collecting filter 4 is a pleated high-performance HEPA so as to collect fine particles such as pollen.
Use a filter or the like. As the metal oxide used in the purification filter 5, a metal oxide having an excellent ability to adsorb VOC and other odorous substances is preferable. These metal oxides were coated on ceramic honeycombs. Activated carbon used for the purification filter 6 was coconut shell activated carbon powder. The activated carbon is not limited to coconut shell raw material, but may be coal, resin or the like. As the zeolite, a hydrophobic zeolite having an excellent ability to adsorb VOC and odorous substances is preferable. As the photocatalyst, a semiconductor substance such as anatase type, rutile type titanium oxide, zinc oxide or the like or a substance in which ultrafine metal particles such as platinum are supported on these are used. Here, ceramic honeycomb was coated with anatase-type titanium oxide, which was sufficiently kneaded with zeolite and titanium oxide powder. The zeolite honeycomb formed body may be coated with titanium oxide powder. As the light source 7, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. A germicidal lamp or a cold cathode ultraviolet lamp may be used. Here, in order to sufficiently excite the titanium oxide, the intensity of the 360 nm ultraviolet light on the surface of the purification filter 6 on the light source 7 side is about 2 mW / cm.
^It was set to be ² .

The operation and operation of the air purifying apparatus configured as described above will be described below. When the power of the blower 8 and the light source 7 is turned on, the outdoor air containing dust, pollen, NOx, VOC, etc., enters from the intake port 2. Dust and pollen are collected by the dust filter 4. Remaining NOx and VOC
Most of the substances are adsorbed by the metal oxide of the purification filter 5, and the remaining substances are adsorbed by the zeolite of the purification filter 6. The air thus purified is introduced into the room from the air supply port 3. The substance adsorbed on the zeolite of the purification filter 6 is gradually decomposed by the action of titanium oxide excited by the ultraviolet light emitted from the light source 7, and the zeolite is regenerated.

The operation and effect of this embodiment will be described with reference to FIG. FIG. 2 is a graph showing the results of evaluating the purification performance of the air ventilation purification device of the present invention and a commercially available air purifier in a 6-tatami room of a general household. In this test, toluene, which is a typical substance of VOC, was used as a test gas. The initial concentration is 10 PPM. The air volume of the blower 8 was 3 m ³ / min.

FIG. 2 shows the change over time of the toluene concentration. In FIG. 2, the first shows the case of the air ventilation purification device of the present invention, and the second shows the case of a commercially available air purifier.

From the above results, the purification rate of the air ventilation purification device of the present invention was faster than that of a commercially available air purifier. In addition, since indoor air is generally more contaminated than outdoor air, when the same adsorbent is used, the adsorbent of the air ventilation purification device of the present invention has a longer life. The air ventilation purification device of the present invention, which has a high purification speed and high-performance removal performance over a long period of time, is very practical.

(Embodiment 2) FIG. 3 is a sectional view of an air ventilation purification apparatus according to a second embodiment of the present invention. In FIG. 3, reference numeral 20 denotes an outer casing, one of which is provided with an intake port 21 as an intake means, the other is provided with an air supply port 22, and the other is provided with an air supply port 23 as an exhaust means. And an exhaust port 24 is provided on the other side. A blower 29, a dust collection filter 25, a purification filter 26 made of metal oxide,
Light source 28, purification filter 2 composed of zeolite and photocatalyst
7, a blower 29, a purification filter 27 made of zeolite and a photocatalyst, a light source 28,
Purification filter 26 made of metal oxide, dust filter 2
5 are provided. As in the first embodiment, the dust collecting filter 25 uses a pleated high-performance HEPA filter or the like. The same filters as in the first embodiment are used for the purification filters 26 and 27. As the light source 28, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. In order to sufficiently excite titanium oxide, the UV intensity at 360 nm on the surface of the purification filter 27 was set to be about ² mW / cm ² .

Differences between the operation and the operation of the air purifying apparatus having the above-described configuration in the first embodiment will be described.
When the power of the blower 29 and the light source 28 is turned on, dust, pollen, N
Outdoor air including Ox, VOC and the like enters through the intake port 21. Then, dust and pollen are collected by the dust filter 25. Most of the remaining NOx and VOC substances are adsorbed by the metal oxide of the purification filter 26, and the remaining ones are adsorbed by the zeolite of the purification filter 27. The air thus purified is introduced into the room from the air supply port 22. At the same time, room air containing house dust, cigarette smoke, foul odor, VOC, etc., enters through the air supply port 23. Then, house dust and cigarette smoke are collected by the dust collecting filter 25. Most of the remaining odor and VOC substances are adsorbed by the metal oxide of the purification filter 26, and the remaining ones are adsorbed by the zeolite of the purification filter 27. The air thus purified is discharged from the exhaust port 24 to the outside of the room. The substance adsorbed on the zeolite of the purification filter 27 is gradually decomposed by the action of titanium oxide excited by the ultraviolet light emitted from the light source 28, and the zeolite is regenerated. Compared with the first embodiment, the air purifying apparatus according to the present invention enables quick air purification by forcibly removing indoor contaminated air while taking in purified fresh outdoor air. Further, indoor contaminated air is purified through the adsorbent layer and then discharged outside the room, thereby preventing outside air pollution.

(Embodiment 3) FIG. 1 is a sectional view of an air ventilation purification apparatus according to a third embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an outer housing, one of which is provided with an air inlet 2 and the other is provided with an air inlet 3. A dust filter 4, a purifying filter 5 made of metal oxide 5, a light source 7, a purifying filter 6 made of activated carbon or zeolite and a photocatalyst 6, and a blower 8 from the intake port 2 side.
Is provided.

The dust collecting filter 4 is a pleated high-performance HEPA so as to collect fine particles such as pollen.
Use a filter or the like. As the metal oxide used in the purification filter 5, a metal oxide having an excellent ability to adsorb VOC and other odorous substances is preferable. These metal oxides were coated on ceramic honeycombs. Activated carbon used for the purification filter 6 was coconut shell activated carbon powder. The activated carbon is not limited to coconut shell raw material, but may be coal, resin or the like. As the zeolite, a hydrophobic zeolite having an excellent ability to adsorb VOC and odorous substances is preferable. As the photocatalyst, a semiconductor substance such as anatase type, rutile type titanium oxide, zinc oxide or the like or a substance in which ultrafine metal particles such as platinum are supported on these are used. Here, ceramic honeycomb was coated with anatase-type titanium oxide, which was sufficiently kneaded with zeolite and titanium oxide powder. The zeolite honeycomb formed body may be coated with titanium oxide powder. As the light source 7, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. A germicidal lamp or a cold cathode ultraviolet lamp may be used. Here, in order to sufficiently excite the titanium oxide, the intensity of the 360 nm ultraviolet light on the surface of the purification filter 6 on the light source 7 side is about 2 mW / cm.
^It was set to be ² .

The operation and operation of the air purifying apparatus configured as described above will be described below. When the power of the blower 8 and the light source 7 is turned on, the outdoor air containing dust, pollen, NOx, VOC, etc., enters from the intake port 2. Dust and pollen are collected by the dust filter 4. Remaining NOx and VOC
Most of the substances are adsorbed by the metal oxide of the purification filter 5, and the remaining substances are adsorbed by the zeolite of the purification filter 6. The air thus purified is introduced into the room from the exhaust port 3. The substance adsorbed on the zeolite of the purification filter 6 is gradually decomposed by the action of titanium oxide excited by the ultraviolet light emitted from the light source 7, and the zeolite is regenerated.

The effect of this embodiment will be described with reference to FIGS. 4 and 5 are graphs showing the results of evaluating the purification performance of an air ventilation purification device using the adsorbent of the present invention and a conventional air ventilation purification device using the adsorbent in a 6 m ³ closed box. . In this test, ammonia and hydrogen sulfide were used as test gases. The initial concentration was 20 ppm. In the air ventilation purification device of the present invention, the metal oxide of the purification filter 5 is reduced to 1
The purification filter 6 was 50 g of zeolite and 50 g of titanium oxide. The air volume of the blower 8 is 3 m ³
/ Min. The conventional air purification system using the adsorbent used for comparison is composed of 100 g of activated carbon and 1 g of titanium oxide.
The conditions were the same as those of the present invention except that the composition was made from 00 g.

FIG. 4 shows the change over time of the ammonia concentration. FIG. 5 shows the time change of the hydrogen sulfide concentration. 4 and 5, the first shows the case of the present invention in which 100 g of metal oxide, 50 g of zeolite and 50 g of titanium oxide are used, and the second shows the case of a conventional example in which 100 g of activated carbon and 100 g of titanium oxide are used.

FIG. 6 is a graph showing the results of evaluating the purification performance of the air purification device of the present invention and the conventional air purification device in a 6 m ³ closed box. In this test, acetaldehyde was used as a test gas. The initial concentration was 10 ppm, and 10 ppm of acetaldehyde was injected every 60 minutes. In the air purification device of the present invention,
The metal oxide of the purification filter 5 was 100 g, the zeolite of the purification filter 6 was 50 g, and the titanium oxide was 50 g. The air volume of the blower 8 was 3 m ³ / min. The air ventilation purification device using the conventional adsorbent used for comparison was the same as the present invention except that the adsorbent was composed of 100 g of hydrophobic zeolite and 100 g of titanium oxide.

FIG. 6 shows the change over time in the concentration of acetaldehyde. In FIG. 6, the first is a metal oxide 100
g, 50 g of zeolite and 50 g of titanium oxide, and the second case of a conventional example in which 100 g of hydrophobic zeolite and 100 g of titanium oxide are used.

From the above results, it can be seen that the purification filter composed of metal oxide, zeolite and titanium oxide used in the air ventilation purification apparatus of the present invention has a higher purification rate than the filter composed of zeolite and photocatalyst, and has a higher purification rate than zeolite. The adsorbed substance was regenerated by the action of titanium oxide excited by ultraviolet light. The air ventilation purification apparatus of the present invention, which has a high purification rate and a high-performance removal performance over a long period of time, is very advantageous in terms of maintenance.

(Embodiment 4) FIG. 7 is a sectional view of an air ventilation / purification device according to a fourth embodiment of the present invention.

In FIG. 7, reference numeral 40 denotes an outer casing, one of which is provided with an intake port 41 as an intake means, the other is provided with an air supply port 42, and the other is provided with an air supply means as an exhaust means. An air port 43 is provided, and the other port is provided with an exhaust port 44. Then, the blowers 4 are sequentially arranged from the intake port 41 side.
9, a dust collecting filter 45, a purifying filter 46 composed of a metal oxide, a light source 48, a purifying filter 47 composed of zeolite and a photocatalyst are provided.
9, a purification filter 47 made of zeolite and a photocatalyst, a light source 48, a purification filter 46 made of a metal oxide, and a dust collection filter 45 are provided. A heat exchanger 50 is provided between the exhaust side and the intake side. As in the first embodiment, the dust collecting filter 45 is a pleated high-performance HE.
A PA filter or the like is used. Purification filters 46 and 47 use the same filters as in the first embodiment. As the light source 48, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. In order to sufficiently excite the titanium oxide, the UV intensity of 360 nm on the surface of the purification filter 47 is about 2 m.
W / cm ² was set.

The differences between the operation and the operation of the air purifying apparatus having the above-described configuration in the first embodiment will be described.
When the power of the blower 49 and the light source 48 is turned on, dust, pollen, N
Outdoor air containing Ox, VOC and the like enters through the intake port 41. Dust and pollen are collected by the dust filter 45. Most of the remaining NOx and VOC substances are adsorbed by the metal oxide of the purification filter 46, and the remaining substances are adsorbed by the zeolite of the purification filter 47. The air thus purified is introduced into the room from the air supply port 42. At the same time, room air containing house dust, cigarette smoke, foul odor, VOC, etc., enters through the air supply port 43. Then, house dust and cigarette smoke are collected by the dust collecting filter 45. Most of the remaining odor and VOC substances are adsorbed by the metal oxide of the purification filter 46, and the remaining ones are adsorbed by the zeolite of the purification filter 47. The air thus purified is discharged from the exhaust port 44 to the outside of the room. The substance adsorbed on the zeolite of the purification filter 47 is gradually decomposed by the action of titanium oxide excited by the ultraviolet light emitted from the light source 48, and the zeolite is regenerated.

The operation and effect of this embodiment will be described. The air ventilation purification device of the present invention provided with a heat exchanger and the air ventilation purification device of the same condition as the present invention except that the heat exchanger was not installed were each installed in a room of 6 tatami mats, and the change in indoor temperature was measured. It was measured. Outdoor temperature 10 ° C, indoor temperature 20 ° C
, The air ventilation purification device was operated, and the room temperature was measured after 30 minutes. As a result, in the case of the air ventilation purification apparatus of the present invention provided with a heat exchanger, the temperature was reduced only to 16 ° C. and 4 ° C., whereas when the heat exchanger was not provided, 12 ° C.
And 8 ° C.

From the above results, the air ventilation / purification device of the present invention can always keep the indoor environment comfortable by taking in the purified fresh air from outside while ventilating with little heat loss. It is.

(Embodiment 5) FIG. 8 is a sectional view of an air ventilation purification apparatus according to a fifth embodiment of the present invention. In FIG. 8, reference numeral 60 denotes an outer casing, one of which is provided with an intake port 61, and one of which is provided with an air supply port 62. Then, the blowers 69,
A dust filter 63, a heating element 66, a purification filter 64 made of metal oxide, a light source 68, a purification filter 65 made of zeolite and a photocatalyst, and a heating element 67 are provided. The heating element 66 is provided along the purification filter 64,
The heating element 67 is provided along the purification filter 65.

As in the first embodiment, a pleated high-performance HEPA filter or the like is used as the dust collecting filter 63. Purification filters 64 and 65 use the same filters as in the first embodiment. As the light source 68, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. In order to sufficiently excite the titanium oxide, the ultraviolet intensity of 360 nm on the surface of the purification filter 65 on the light source 68 side is about 2 mW / cm.
^It was set to be ² . Further, the heating element was a cord-shaped one, and the temperature of the purification filters 64 and 65 was set to about 70 ° C. during energization.

The differences between the operation and the operation of the air purifying apparatus having the above-described structure in the first embodiment will be described.
First, when the power of the blower 69 is turned on, contaminated air enters from the intake port 61 side, and dust and pollen are collected by the dust collecting filter 63. After that, most of the remaining NOx and VOC substances are adsorbed by the metal oxide of the purification filter 64, and the remaining ones are adsorbed by the zeolite of the purification filter 65. The air thus purified is introduced into the room from the air supply port 62. When the indoor air becomes clean and the light source 68 and the heating elements 66 and 67 are energized, the metal oxides of the purification filters 64 and 65 and the malodorous substances adsorbed on the zeolite are desorbed by the oxidative decomposition reaction and the light source The titanium oxide is gradually decomposed by the action of the titanium oxide excited by the ultraviolet rays irradiated from 68, and the zeolite is regenerated.

(Embodiment 6) FIG. 9 is a sectional view of an air ventilation purification apparatus according to a sixth embodiment of the present invention. In FIG. 9, reference numeral 70 denotes an outer housing, one of which is provided with an air inlet 71, and one of which is provided with an air inlet 72. And, in order from the intake port 71 side, a blower 79,
A dust collection filter 73, a heating element 77, a moisture absorbent 76, a purification filter 74 made of metal oxide, a light source 78, and a purification filter 75 made of zeolite and a photocatalyst are provided. The heating element 76 is provided along the moisture absorbent 77.

As in the first embodiment, a pleated high-performance HEPA filter or the like is used as the dust collecting filter 73. The same filters as in the first embodiment are used as the purification filters 74 and 75. As the light source 78, a lamp having a wavelength for exciting the photocatalyst is used. Here, a black light mercury lamp sufficient to excite titanium oxide was used. In order to sufficiently excite the titanium oxide, the ultraviolet intensity of 360 nm at the surface of the purification filter 75 on the light source 78 side is about 2 mW / cm.
^It was set to be ² . The desiccant is made of zeolite or silica gel, and the heating element is cord-shaped.
The temperature of the hygroscopic agent 76 was set to about 70 ° C. during energization.

The difference between the operation and the operation of the air purifying device having the above-described configuration in the first embodiment will be described.
When the power of the blower 79 and the light source 78 is turned on, dust, pollen, N
Outdoor air containing Ox, VOC, and the like enters through the intake port 71. Then, dust and pollen are collected by the dust collecting filter 73. Most of the remaining NOx and VOC substances are adsorbed by the metal oxide of the purification filter 74, and the remaining ones are adsorbed by the zeolite of the purification filter 75. The air thus purified is introduced into the room through the exhaust port 72. The substance adsorbed on the zeolite of the purification filter 75 is gradually decomposed by the action of titanium oxide excited by the ultraviolet light emitted from the light source 78, and the zeolite is regenerated. Further, when the heating element 76 is energized on the day when the outdoor air is dried, moisture and malodorous substances adsorbed on the moisture absorbent 77 made of zeolite or silica gel are desorbed. It protects the layer made of metal oxide and the layer made of activated carbon or zeolite and photocatalyst from moisture, purifies indoor air for a long time without deteriorating pollutant adsorption performance, and can always keep the indoor environment comfortable. is there.

(Embodiment 7) FIG. 10 is a sectional view of an air ventilation / purification device according to a seventh embodiment of the present invention. In FIG. 10, reference numeral 80 denotes an outer casing, one of which is provided with an intake port 81 as an intake means, the other is provided with an air supply port 82, and the other is provided with an air supply port 83 as an exhaust means. And an exhaust port 84 is provided on the other side. Then, in order from the intake port 81 side, a blower 89, a dust collection filter 85, and a purification filter 8 made of metal oxide.
6, a light source 88, a purification filter 87 made of zeolite and a photocatalyst are provided, and a blower 89,
Purification filter 87 composed of zeolite and photocatalyst, light source 8
8, a purification filter 86 made of metal oxide and a dust collection filter 85 are provided. Further, a ventilation path 90 connecting the indoor air exhaust port and the outdoor air intake port is provided. As in the first embodiment, a pleated high-performance HEPA filter or the like is used as the dust collecting filter 85. The same filters as in the first embodiment are used for the purification filters 86 and 87. As the light source 88, a lamp having a wavelength for exciting the photocatalyst is used.
Here, a black light mercury lamp sufficient to excite titanium oxide was used. In order to sufficiently excite the titanium oxide, the UV intensity at 360 nm on the surface of the purification filter 87 was set to be about ² mW / cm ² .

The difference between the operation and the operation of the air ventilation / purification device configured as described above, which is different from the first embodiment, will be described. When the power of the blower 89 and the light source 88 is turned on, the outdoor air containing dust, pollen, NOx, VOC, etc.
Enter from. Then, dust and pollen are collected by the dust collecting filter 85. The remaining NOx and VOC substances are supplied to the purification filter 86.
Most of the metal oxide is adsorbed, and the remaining one is adsorbed by the zeolite of the purification filter 87. The air thus purified is introduced into the room through the air supply port 82. Also,
At the same time, house dust and cigarette smoke, stench, VO
Indoor air containing C and the like enters through the air supply port 83. Then, house dust and cigarette smoke are collected by the dust collecting filter 85. The remaining odor and VOC substances are purified by the filter 86.
Most of the metal oxide is adsorbed, and the remaining one is adsorbed by the zeolite of the purification filter 87. The air thus purified is returned from the exhaust port 84 to the outside of the room through a ventilation path connecting the indoor air exhaust port and the outdoor air intake port. The substance adsorbed on the zeolite of the purification filter 87
Is gradually decomposed by the action of titanium oxide excited by the ultraviolet light irradiated from the substrate, and the zeolite is regenerated. In addition to the above-described operations, the air ventilation purification device of the present invention can be configured to remove the indoor air exhaust and the adsorbent layer when the difference between the temperature and humidity of the outdoor air and the indoor air is small or when the degree of contamination of the indoor air is high. This enables rapid purification of indoor air by the intake of outdoor air that has passed through it. Conversely, when the difference between the temperature and humidity of the outdoor air and the indoor air is large or when the degree of contamination of the indoor air is low, the indoor air is passed through the adsorption layer. By circulating, it is possible to purify indoor air without impairing comfort such as indoor temperature and humidity.

[0044]

According to the present invention, the outdoor air purified by passing through the adsorption layer is introduced into the room, and the indoor contaminated air is discharged outside the room, so that the indoor air can be purified more quickly.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to Embodiments 1 and 3 of the present invention.

FIG. 2 is a graph showing a comparison of purification performance between an embodiment of the present invention and a conventional example.

FIG. 3 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to a second embodiment of the present invention.

FIG. 4 is a graph showing a comparison of purification performance between an embodiment of the present invention and a conventional example.

FIG. 5 is a graph showing a comparison of purification performance between an embodiment of the present invention and a conventional example.

FIG. 6 is a graph showing a comparison of purification performance between an embodiment of the present invention and a conventional example.

FIG. 7 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to a fourth embodiment of the present invention.

FIG. 8 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to a fifth embodiment of the present invention.

FIG. 9 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to a sixth embodiment of the present invention.

FIG. 10 is a cross-sectional view illustrating a configuration of an air ventilation purification device according to a seventh embodiment of the present invention.

[Explanation of symbols]

5, 26, 46, 64, 74 Metal oxide filter 6, 27, 47, 65, 75 Zeolite / photocatalytic filter 7, 28, 48, 68, 78, 88 Light source 8, 29, 69, 79, 89 Fan 50 Heat Exchanger 66, 67, 76 Heater 77 Hygroscopic

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B01D 53/04 B01D 53/04 A 4D058 53/26 101 53/26 101A 4G069 53/86 B01J 35/02 ZABJ B01J 35 / 02 ZAB F24F 3/14 F24F 3/14 7/08 101N 7/08 101 B01D 53/36 J (72) Inventor Yu Fukuda 1006 Ojidoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Shiga Azusa 1006 Kadoma, Kadoma, Osaka Prefecture F-term (reference) in Matsushita Electric Industrial Co., Ltd. AA13 AA18 AA22 AB01 AB03 BA07X BA11X BB02 CD01 CD05 EA01 4D052 AA08 CA02 DA01 DA06 DB01 HA01 HA03 4D058 JA13 SA01 TA02 TA06 4G069 AA03 BA04B BA07A BA07B BA13B BA48A BA48C CA01 CA07 CA10 CA13 CA18 CA15 CA18 CA15 CA13 CA14 CA18

Claims (8)

[Claims] 1. An air ventilation / purification system in which outdoor contaminated air is purified by passing through an adsorbent layer by an intake means and then introduced into the room. 2. The outdoor air is passed through the adsorbent layer and purified by the suction means, and is then introduced into the room. The indoor air is passed through the adsorbent layer by the exhaust means and purified, and then the outdoor air is purified. An air ventilation purification device that is discharged to the air or discharged directly by the exhaust means. 3. The adsorption layer comprises a layer comprising a metal oxide for removing at least a sulfur-based gas and a layer comprising at least activated carbon or zeolite and a photocatalyst.
Or the air ventilation purification device according to 2. 4. The air ventilation purification device according to claim 2, wherein heat exchange between the exhaust side and the intake side is made possible by installing a heat exchanger. 5. An adsorption layer comprising a layer made of a metal oxide for removing at least a sulfur-based gas and a layer made of at least activated carbon or zeolite and a photocatalyst, wherein said layer is heated by a heating means. Items 1 to 4
The air ventilation purification device according to any one of the above. 6. The air ventilation purification device according to claim 1, further comprising a dehumidifier provided upstream of the adsorption layer. 7. A system according to claim 2, wherein a ventilation path is provided between an exhaust port for discharging indoor air and an intake port for introducing outdoor air, so that the indoor air can be circulated. The air ventilation purification device according to any one of the above. 8. The air ventilation purification device according to claim 1, wherein a dust collecting means is provided on the upstream side of the contaminated air in the adsorption layer.