JP5290782B2 - Air pollutant removal equipment in circulation type ventilation system - Google Patents

Description

  The present invention relates to an air pollutant removing apparatus used for a circulation type ventilation system in a house or the like.

  Air pollutants include (a) odorous substances, (b) microbial particles such as bacteria and fungi (c), (c) allergen particles such as pollen and mites, etc. This is an extremely important issue in making the environment healthy and comfortable. Various countermeasure technologies have been studied and some of them have been put into practical use for such problems, but there are still a number of problems as will be described later.

  For example, as a conventional technique, the one described in Patent Document 1 is a wet heat exchanger on the downstream side of an air conditioner filter, so that odorous substances, microbial particles, and the like that cannot be removed by the filter are applied to the wet surface of the heat exchanger. To be removed.

  Moreover, the thing of patent document 2 provides the mat-like filter for preventing the water splash from a condenser in the downstream of the condenser in an air conditioner, and this mat-like filter applies or immerses an antibacterial agent. Therefore, it is intended to prevent the propagation of various germs.

  Further, the one described in Patent Document 3 relates to a deodorizing filter for an air supply / exhaust port of an air conditioner, and this deodorizing filter soaks a non-woven fabric with a physical adsorption type deodorant such as activated carbon, an antibacterial agent, a photocatalyst and the like. It is composed.

JP-A-5-302735 Japanese Patent Laid-Open No. 9-184641 JP 2006-280906 A

  Next, an outline of the prior art and its problems will be described for each air pollutant described above.

(A) Odor substance Although the cause of odor generation from air conditioners and air purifiers has been gradually clarified, the problem is that odor substances are generated from filters mounted on air conditioners and air purifiers. That is, the odor generation factor of the filter is that (1) the odor substance removing performance in the filter section is small in the first place, and its sustainability is extremely short, and (2) MVOC (Mold Volatile organic compounds; hereinafter referred to as MVOC) is generated. (3) Accumulation and re-emission of pollutants contained in the air to be removed occurs, and (4) In antibacterial filters, the antibacterial performance decreases due to volatilization / degradation of antibacterial agents and increased humidity.

  In conventional air conditioners and air cleaners, odorous substances are removed by a gas removal filter such as activated carbon. However, the removal performance of gaseous pollutants such as odorous substances is proportional to the amount of activated carbon used, but recent research reports have revealed that the removal performance is extremely short-lasting. For example, it has become clear that when a household air cleaner is operated continuously in a normal environment, the HCHO removal performance after two months of operation is halved. (See Non-Patent Document 1)

  By the way, in the air conditioning equipment, the growth of microbial particles trapped in the filter occurs, and certain VOCs (Volatile organic compounds) are generated with the activity. This is called MVOC and pollutes indoor air. Therefore, effective countermeasures have been demanded. For example, as described in Patent Document 2 and Patent Document 3 described above, a technique for impregnating a filter with an antibacterial agent is conventionally performed to suppress MVOC generation.

  However, this technology using antibacterial agents has the following problems as well as odor contamination. That is, (1) The antibacterial agent used diffuses into the room as a gaseous pollutant with the operation of the equipment, resulting in indoor pollution problems. (2) The effect of inhibiting the growth of bacteria (antibacterial) is reduced as the humidity in the air increases. There are problems such as (3) antibacterial performance decreases with increasing use time, and (4) odor generation amount of the filter increases with decrease in antibacterial performance. In any case, it is an urgent task to solve the problem of odorous substance emission generated by air conditioners and air purifiers.

Nozaki Ikuo et al., "Study on Sustainability of Contaminant Removal Performance of Household Air Cleaners (Part 1)", Architectural Institute of Japan Annual Conference, Architectural Institute of Japan, September 2008, D-II, p.825-826

(B) Microbial particles Air cleaners and air conditioners have high expectations for indoor invasion of airborne microbial particles that cause severe acute respiratory syndrome (SARS) and influenza, and treatment after the invasion. However, these microbial particles trapped in the filters of air conditioners and air purifiers sometimes become an environment suitable for the growth of the same substance in the filter, so the number of particles exceeds the retention capacity of the filter and re-emissions. And released into the room. This re-emission phenomenon is a problem that must be solved.

(C) Allergen particles such as pollen and mites Allergen particles include pollen, mites, and molds, which cause various allergic diseases such as allergic rhinitis, bronchial asthma, and atopic dermatitis. The causative agent of hay fever is not only cedar pollen, but also a large number of camodia, ragweed, hinoki and others. These are scattered throughout the year, causing perennial allergic rhinitis. House dust such as mites and molds is also a causative substance of perennial allergic diseases.

Therefore, in an air conditioner or an air cleaner, these allergen particles must be continuously removed without growing in the apparatus.
However, as with microbial particles, some allergen particles trapped in air conditioner and air purifier filters sometimes become a suitable environment for the growth of the same material, so they can be re-emissioned into the room. Released. This re-emission phenomenon is a problem that must be solved. Moreover, in the conventional filter mounted on equipment, it is difficult to continuously remove the substance, and there is a drawback that the substance is re-diffused into the room exceeding the removal capacity of the filter.

  The present invention aims to solve the problems described above.

  In order to solve the above-described problems, in the present invention, in claim 1, an adsorbing portion filled with an adsorbent is provided in a heat insulating container provided with an air inlet and an air outlet, and the adsorbing portion can be heated. The present invention proposes an air pollutant removing apparatus that is provided with a heater, an exhaust port for a heated product, and an air inlet and an air outlet connected to an air duct of an air conditioning system.

  A second aspect of the present invention proposes an air pollutant removing device in which the inlet side of the adsorbing portion is configured as a dust removing portion and the exhaust body for the heated product is provided in the container.

  According to a third aspect of the present invention, an adsorbing portion filled with an adsorbent is provided in a heat-insulating container provided with an air inlet and an air outlet, and a heat-resistant dust removing portion is provided closer to the inlet than the adsorbing portion. The present invention proposes an air pollutant removing device that is provided with a heater capable of heating a dust removing unit, an exhaust port for a heated product, and an air inlet and an air outlet connected to an air duct of an air conditioning system.

  Further, in claim 4, in claims 1 to 3, the adsorbing portion has a structure in which a pellet-shaped adsorbent is filled in a heat-resistant tub, and an inspection in which the adsorbent in the tub can be put in and out of the container body. A device for removing air pollutants with a mouth is proposed.

  Further, according to claim 5, there is proposed an air pollutant removing device according to claim 3, wherein the dust removing portion is constituted by a heat-resistant net filter, and an inspection port for the net filter is provided below the body.

  A sixth aspect of the present invention proposes an air pollutant removing apparatus according to any one of the first to fifth aspects, wherein a heater capable of heating the adsorption unit is provided in the adsorption unit.

  A seventh aspect of the present invention proposes an air pollutant removing device according to any one of the first to sixth aspects, wherein a heater capable of heating the adsorption portion is provided on the inner surface of the vessel.

  Further, according to claim 8, there is proposed an air pollutant removing device provided with a heater capable of heating the dust removing unit in the dust removing unit according to claim 3 or 5.

  A ninth aspect of the present invention proposes an air pollutant removing apparatus according to any one of the first to eighth aspects, wherein the air inlet and the air outlet are connected to the air duct of the air conditioning system via a heat-resistant telescopic duct.

  A tenth aspect proposes an air pollutant removal device according to the first to ninth aspects, wherein a dust filter is provided in the air conditioning system upstream of the body.

  In claim 11, a pollutant removal apparatus for air in which the humidified air supply part is provided in the container body in claims 1 to 10 is proposed.

  A twelfth aspect proposes an air pollutant removing device according to the first to eleventh aspects, wherein a humidified air supply unit is provided in an air conditioning system upstream of the body.

  A thirteenth aspect of the present invention proposes an air pollutant removing device provided with the differential pressure detecting means on the upstream side and the downstream side of the adsorption portion in the first to twelfth aspects.

  First, in the air pollutant removal apparatus according to claim 3, when the air to be treated containing pollutants such as odorous substances, microbial particles, and allergen substances flows into the chamber from the air inlet through the air duct of the air conditioning system, Microbial particles and allergen particles in the air are trapped in a heat-resistant dust removing section constituted by a heat-resistant net filter such as a metal net filter or a carbon fiber net filter. On the other hand, most of the odorous substances in the air to be treated are gaseous substances and pass through the dust removal unit, but then flow into the adsorption unit and are adsorbed by the adsorbent filled in the adsorption unit. In this way, the air to be treated that has passed through the adsorbing section is removed from the contaminants, becomes clean air, flows out of the body through the air outlet, flows into the air duct of the air conditioning system, and is subjected to air conditioning.

  Here, by heating the heat-resistant dust removing portion with a heater, the microbial particles and allergen particles trapped in the dust removing portion are incinerated and extinguished, and a trace amount of water, carbon dioxide, and carbon compounds are formed as heating products. Water and carbon dioxide can be discharged from the exhaust port to the outside air, and carbon compounds can be discharged from the inspection port.

  On the other hand, by heating the adsorbing part with a heater, the odorous substance adsorbed by the adsorbent filled in the adsorbing part is desorbed from the adsorbent by heating and discharged from the exhaust port to the outside air.

  As described above, the effect of removing contaminants in the air can be maintained by operating the heater as necessary to perform heat baking of the heat-resistant dust removing unit and heat desorption of the adsorbent.

  Since the adsorbing part and the dust removing part which operate the heater to perform heating and baking and heat desorption are provided in the heat insulating container, the outside temperature of the container can be maintained at a safe temperature.

  In the air pollutant removal device according to claim 1, the dust removing portion in the container is omitted from that of claim 1, and in this configuration, for example, as in claim 10, it is connected to the upstream side of the container. The dust removal function can be exhibited by providing a dust removal filter in the air conditioning system.

  On the other hand, in the air pollutant removal apparatus according to the second aspect, the dust removal function can be exhibited by using the inlet side of the adsorption portion as the dust removal portion.

  Here, the air inlet and the air outlet of the container are connected to the air duct of the air conditioning system through heat-resistant expansion and contraction ducts, respectively, so that the expansion of the container before and after the above-described heating and baking and heating desorption is performed. Can absorb shrinkage.

  A humidified air supply unit is provided in the vessel or an air conditioning system upstream of the vessel, and more effective desorption can be performed by supplying humidified air when the adsorption unit is heated and desorbed. Can be efficiently and safely desorbed by heating.

  The above-described heating and firing of the dust removing unit and the heating and desorption of the adsorbing unit can be periodically performed by a temperature controller having a timer function. In addition, in the heat desorption of the adsorption unit, a differential pressure detecting means on the upstream side and the downstream side of the adsorption unit may be provided so that the heat desorption is performed when the differential pressure reaches a set value.

It is a typical explanatory view showing a 1st embodiment of the present invention. It is typical explanatory drawing which shows the 2nd Embodiment of this invention. It is system | strain explanatory drawing which shows the example which applied this invention to the air conditioning system. It is a flowchart which shows the procedure which measures the removal performance of VOC with respect to the air pollutant removal apparatus of this invention using activated carbon as an adsorbent. The result measured by the procedure of FIG. 4 is shown. The result measured by the procedure of FIG. 4 is shown. The result measured by the procedure of FIG. 4 is shown.

Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 shows a first embodiment of an air pollutant removing apparatus of the present invention.
Reference numeral 1 denotes a container, which is heat-insulated by a heat insulating material 2 provided on the outer periphery, and is provided with an air inlet 3 and an air outlet 4. Reference numeral 5 denotes an adsorbing portion, and the adsorbing portion 5 is filled with an appropriate adsorbent 6 that can be regenerated by heating, such as activated carbon, zeolite, or carbon-based ceramic. In this embodiment, the adsorbing part 5 is configured by filling a pellet-shaped adsorbing material 6 in a basket made of a heat-resistant metal or the like. Activated carbon, zeolite, or the like as the adsorbent 6 can withstand a considerable number of heat desorptions, but an inspection port 7 is provided in the container 1 for replenishment and inspection. An exhaust port 8 is provided on the upper side of the vessel body 1. Furthermore, the container 1 is provided with heaters 9 (9a, 9b) as heating means for heating the suction part 5. That is, in this embodiment, for example, a linear heater 9 a provided in the adsorption unit 5 and a planar heater 9 b provided on the inner surface of the container 1 are provided as heaters for heating the adsorption unit 5. It is composed. In addition to this, the heater 9 may be provided only in the adsorption unit 5 or close to the outside of the adsorption unit as long as the adsorption unit 5 can be effectively heated, or provided appropriately. Can do. Reference numeral 10 denotes a temperature controller for controlling the heaters 9a and 9b. The temperature controller 10 has a timer function for setting the ON time and the ON time of the heaters 9a and 9b. Note that the temperature controller 10 may be configured to be manually turned on and off by the operator instead of the timer function.

  In the above configuration, the air inlet 3 and the air outlet 4 of the container 1 are connected to the air duct 12 of the air conditioning system via the heat-resistant telescopic duct 11, respectively. In this embodiment, the humidified air supply unit 13 and the dust filter 14 are provided in the air conditioning system upstream of the container 1, and the differential pressure detection means 15 is provided upstream and downstream of the adsorption unit 5. Yes. These are not essential, and are provided as necessary.

Next, FIG. 2 shows a second embodiment of the air pollutant removing apparatus according to the present invention. This second embodiment removes dust in the body 1 of the apparatus of the first embodiment. A part is provided. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
That is, in the second embodiment, a heat-resistant dust removing part 16 is provided on the inlet side of the suction part 5 in the container 1, a heater 17 capable of heating the dust removing part 16 is provided, and the container body 1 has a configuration in which an exhaust port 18 and an inspection port 19 for the heated product are provided in the same manner as the adsorption unit 5.

  Here, the heat-resistant dust removal part 16 can be comprised with the net filter made from metal or carbon fiber, for example. And it can be set as the structure which arranged the some linear heater in parallel as a heater for adjoining this net filter and heating it, for example.

  In the air pollutant removal apparatus having the configuration shown in FIG. 2, the air to be treated containing pollutants such as odorous substances, microbial particles, and allergen substances is removed by the dust filter 14 on the upstream side of the vessel 1. After that, it flows into the body 1 from the air inlet 3 through the air duct 12 of the air conditioning system. The microbial particles and allergen particles in the processing target air that has flowed in are captured by the heat-resistant dust removing unit 17 configured by a heat-resistant net filter such as a metal net filter or a carbon fiber net filter as described above. On the other hand, since most of the odorous substances in the air to be treated are gaseous substances, they pass through the dust removal unit, but then flow into the adsorption unit 5 and are adsorbed by the adsorbent 6 filled in the adsorption unit 5.

  Thus, the processing target air that has passed through the adsorbing unit 5 is removed from the contaminants as described above, becomes clean air, flows out of the body 1 through the air outlet 4, and flows into the air duct 12 of the air conditioning system. And is used for air conditioning.

  The microbial particles and allergen particles collected and collected by the dust removal unit 16 can be incinerated and extinguished by heating the dust removal unit 16 with the heater 17 turned on. That is, the accumulated microbial particles and allergen particles become a minute amount of water, carbon dioxide, and carbon compounds as heating products, so that water and carbon dioxide can be discharged from the exhaust port 18 to the outside air. It can be discharged from the inspection port 19.

  On the other hand, by heating the adsorbing unit 5 with the heaters 9a and 9b, the odorous substance adsorbed on the adsorbent 6 filled in the adsorbing unit 5 is desorbed from the adsorbent 6 by heating and discharged from the exhaust port 8 to the outside air. Is done.

  Most of odorous substances such as ammonia and VOC adsorbed on the adsorbent 6 can be desorbed by raising the temperature of about 200 to 350 ° C. and venting. For example, when the detachability was verified by experiment using a prototype device, VOC was almost 100% removed at an air flow rate of 1.5 (m3 / h), a heating temperature of about 250 to 350 ° C., and a heating time of 3 hours. At the time of heating, the air heated in the container 1 could be effectively discharged from the exhaust port 8 together with the odorous substance.

  As described above, in the air pollutant removal apparatus of this embodiment, the heater 17 or the heaters 9a and 9b are operated as necessary to heat and sinter the heat-resistant dust removing unit 16 and to heat and desorb the adsorbent 6. By carrying out, the removal effect of air pollutants can be maintained.

  Since the adsorbing portion 5 and the dust removing portion 16 that operate the heater 17 or the heaters 9a and 9b to perform heating and baking and heat desorption are provided in the heat insulating body 1 covered with the heat insulating material 2, 1 outside temperature can be maintained at a safe temperature. When the surface temperature of the vessel 1 was measured when the heaters 9a and 9b were operated in the prototype device, the temperature was 38 ° C. or less, and there was no danger of burns or fire, and safety was confirmed.

  In this embodiment, the humidified air supply unit 13 is provided in the air conditioning system upstream of the container 1, and the humidified air can be supplied when the adsorption unit 5 is heated and desorbed. Thus, the odorous substance can be efficiently and safely desorbed. In this embodiment, the humidified air supply unit 13 is provided in the air conditioning system on the upstream side of the container 1, but may be configured to be directly supplied into the container 1.

  Further, in this embodiment, the heating and baking of the dust removing unit 16 and the heating and desorption of the adsorption unit 5 can be periodically performed by the temperature controller 10 having a timer function. In addition, in the heat desorption of the adsorption unit 5, a differential pressure detecting means 15 on the upstream side and the downstream side of the adsorption unit 5 may be provided so that the heat desorption is performed when the differential pressure reaches a set value. it can. As described above, as described above, the temperature controller 10 can be configured so that an operator manually performs an ON-OFF operation instead of the timer function.

  In the first embodiment shown in FIG. 1, since the dust removing portion 16 in the container 1 is omitted from the configuration of the second embodiment, its operation is self-explanatory and description thereof is omitted.

  However, in the first embodiment, the inlet side of the suction portion 5 can be configured as the dust removal portion 16. That is, at least the inlet side of the soot constituting the suction part 5 is made of a metal net or a carbon fiber net similar to the net filter 17 so that the inlet side of the suction part 5 can be constituted as the dust removing part 16. .

  Furthermore, in this embodiment, since the air inlet 3 and the air outlet 4 of the container 1 are configured to be connected to the air duct 12 of the air conditioning system via the heat-resistant telescopic duct 11, respectively, The expansion and contraction of the container 1 before and after the heat desorption can be absorbed.

Next, FIG. 3 shows an embodiment in which the air pollutant removing apparatus according to the present invention is applied to a circulation type ventilation system.
Reference numeral 20 denotes an air supply fan. The air supply path 21 extends from the air supply fan 20 into the room, the outside air intake path 22 extends from the outside to the air supply fan 20, and the circulation path 23 extends from the room to the air supply fan 20. doing. On the other hand, reference numeral 24 denotes an exhaust fan, which constitutes an exhaust path 25 from the room through the exhaust fan 24 to the outdoors. Reference numerals 25a, 25b, and 25c indicate exhaust paths from various places such as a bathroom, a washroom, and a toilet.

  And the vessel 1 constituting the air pollutant removing device according to the present invention is arranged in the circulation path 23, and the humidified air supply path 26 is constituted by branching from the exhaust path 25a from the bathroom. The supply path 26 is connected to the humidified air supply unit 13. Reference numerals 27a and 27b denote dampers for the path opening / closing means.

In FIG. 3, symbol OA is outside air (Outside
“Air” and “SA” indicate supply air, “RA” indicates circulating air (Return Air), and “EA” indicates exhaust air (Exhaust Air).

  With the above configuration, the air pollutant removal device of the present invention is operated by the above-described operation in a state where the path opening / closing means 27b of the circulation path 23 is opened and the path opening / closing means 27a of the humidified air supply path 26 is closed. It can be used to remove air pollutants. In addition, by closing the path opening / closing means 27b of the circulation path 23, it is possible to perform heating and firing of the dust removing unit (not shown) and heating and desorption of the adsorption unit 5. Further, in the heat desorption of the adsorbing unit 5, the passage opening / closing means 27 a of the humidified air supply path 26 is opened, and the bathroom exhaust is supplied from the humidified air supply path 26 into the container 1 through the humidified air supply unit 13. As described above, the odorous substance can be efficiently and safely detached.

Next, FIG. 4 shows the procedure for measuring the VOC removal performance for the air pollutant removal apparatus of the present invention using activated carbon as the adsorbent, and FIGS. 5 to 7 show the measurement results. Is.
As shown in FIG. 4, in this measurement, first, a concentration decay method removal test is performed to determine the initial ability of activated carbon. In general, activated carbon as an adsorbent is added with an additive to improve the ability to remove formaldehyde, and this concentration attenuation method removal test measures the ability of activated carbon to remove various VOCs in the presence of an additive. To do.
Next, the adsorbing part is heated by a heater to desorb the activated carbon additive.
Next, after removing the adsorbent of the activated carbon, the concentration decay method removal test is performed again, and the removal ability of various VOCs by the activated carbon with the additive in the internal state is measured.
Next, a high-concentration toluene gas is supplied to the adsorption section to contaminate the adsorbent. In this state, the concentration attenuation method removal test is performed again, and the ability to remove various VOCs by activated carbon after toluene contamination is measured.
Next, the adsorption part is heated with a heater to recover the removal performance of the activated carbon, and then the concentration decay method removal test is performed again to measure the removal ability of various VOCs by the activated carbon after the recovery by heating.

  FIG. 5 shows the change in the removal ability of activated carbon for various VOCs, and the data in the left column shows the change in performance after removal of the additive relative to the initial performance. The data in the center column shows the change in performance after toluene contamination with respect to the performance in the left column. Furthermore, the right column shows the change in performance after recovery of activated carbon by heating with respect to the performance in the left column.

  Furthermore, FIG. 6 shows the change in the performance of the three phases of FIG. 5 from the beginning, focusing on formaldehyde as VOC. Similarly, FIG. 7 shows changes in the performance of the three phases in FIG. 5 from the beginning, focusing on toluene as VOC.

The following can be understood from the measurement results of FIGS.
1. By heating the adsorption part and removing the additive intended to remove formaldehyde, the ability to remove formaldehyde (equivalent ventilation) deteriorated to 49.9% of the initial performance. On the other hand, with other VOCs, there is no significant deterioration in adsorption performance, and the average removal rate for each substance is 95.8%, which is only a few percent drop. In addition, depending on the substance, substances whose removal rate is increased by removing the additive such as acetone (110%), methyl ethyl ketone (112%), butanol (133%), benzene (128%), o-xylene (120%), etc. Was also confirmed. This shows that the removal rate of certain VOCs is improved by intentionally removing the additive intended to remove formaldehyde.
2. When the activated carbon of the adsorbing part from which the adsorbent was desorbed was passed through high-concentration toluene gas, changes in the removal ability of each substance became clear. The reduction in removal performance with toluene was remarkably reduced to 13.5% of the removal performance after removal of the additive. That is, the decrease rate is 86.5%. On the other hand, formaldehyde was 74.5% before contamination, and the rate of decrease was only 25.5%. Many other VOCs are almost unaffected. Therefore, in this removal device, it was found that the formaldehyde removal performance is less affected by contamination with VOC single gas.
3. The heat desorption conditions for the activated carbon of the adsorbed part contaminated with toluene gas are as follows, and the removal capacity of toluene is 13.5% to 95.4% compared with the performance after desorption of the additive, which is a great recovery. Showed sex. On the other hand, as mentioned above, formaldehyde is less susceptible to contamination by VOC single gas, and recovered to 77.9% compared to after removal of the additive. In addition, other VOCs show approximately 100% recovery and some exceed 100%.
Heating desorption conditions ・ Aeration rate: 1.5 [m3 / h], heating temperature: 350 [° C], heating time: 5 [h]
・ Air temperature: 28.6 to 36 [° C]
・ Relative humidity: 50 ± 1 [%]

  The air pollutant removal apparatus according to the present invention is as described above, and has an epoch-making feature of chemically removing the odor generation factor of the filter.

(1) Odorous substances a. The conventional technology has a drawback that the removal performance of the odor substance removing device mounted on an air conditioner or an air purifier is extremely short. In response to this problem, the apparatus of the present invention periodically desorbs the adsorbent such as activated carbon, thereby periodically recovering the adsorption performance to the initial performance, and permanently removing the odor substance removal performance. It was a thing.
b. A dust removing part is provided in association with the adsorbing part for removing odorous substances, and this dust removing part is configured as a novel heat-fired filter composed of a metal filter, a carbon filter, a heater, etc. Periodic calcination removal can be performed. Thereby, MVOC which produces | generates an odor substance does not generate | occur | produce.
c. Accumulation of odorous substances in the air and re-emission problems can be fundamentally prevented.

(2) Microbial particles and allergen particles In conventional dust removal equipment installed in air conditioners and air purifiers, there are cases in which certain types of microbial particles and allergen particles grow in the equipment. It was an issue. On the other hand, as described above, the apparatus of the present invention is provided with a dust removing portion that operates as a heat-firing filter, so that microbial particles collected thereby are periodically baked and removed. Therefore, the microorganisms and allergen particles can be continuously removed and the re-emission problem can be fundamentally solved.

(3) Problems with filters containing antibacterial agents The problem of indoor contamination caused by volatilization of antibacterial agents, as with dust removal filters impregnated and coated with antibacterial agents, can be avoided, and indoor antibacterial agent contamination problems can be solved. . In addition, microbial contamination in the filter due to volatilization / deterioration of the antibacterial agent and increase in humidity can be fundamentally solved.

  The air pollutant removal apparatus according to the present invention uses the heaters 9a and 9b for heating the adsorbing unit 5 and the heater 17 for overheating the dust removing unit 16 with the original purpose for passing air (incineration and extinction of microbial particles and allergen particles). Etc.) can also be used for the purpose of raising the temperature (eg preheating).

DESCRIPTION OF SYMBOLS 1 Container 2 Heat insulating material 3 Air inlet 4 Air outlet 5 Adsorption part 6 Adsorbent 7 Inspection port 8 Exhaust port 9 (9a, 9b) Heater 10 Temperature controller 11 Heat resistant expansion duct 12 Air duct 13 Humidified air supply part 14 Dustproof Filter 15 Differential pressure detection means 16 Dust removal unit 17 Heater 18 Exhaust port 19 Inspection port 20 Air supply fan 21 Air supply route 22 Outside air intake route 23 Circulation route 24 Exhaust fan 25 (25a, 25b, 25c) Exhaust route

Claims (3)

An air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, a circulation path from the room to the air supply fan, and an exhaust path from the room to the outside via the exhaust fan are configured. In the circulation type ventilation system, a device constituting an air pollutant removing device is arranged in the circulation path, and the device is a heat insulating device provided with an air inlet and an air outlet . in the body, provided with a suction unit packed with an adsorbent, and a heater capable of heating the adsorbing portion, the outlet of the heating product is provided, the device body, corresponding to the air inlet on the upstream side of the circulation path Then, the air inlet and the air outlet are connected to the air duct of the circulation path, and the humidified air for supplying humidified air to the circulation path upstream of the vessel body during the heating operation of the adsorption unit Supply section and exhaust from bathroom Airborne contaminant removal apparatus in circulating ventilation system, characterized in that the humidified air supply path configured to branch from the road connected to the humidified air supply unit. An air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, a circulation path from the room to the air supply fan, and an exhaust path from the room to the outside via the exhaust fan are configured. In the circulation type ventilation system, a device constituting an air pollutant removing device is arranged in the circulation path, and the device is a heat insulating device provided with an air inlet and an air outlet . in the body, provided with a suction unit packed with an adsorbent, and a heater capable of heating the adsorption unit, the outlet of the heating product, humidified air supply unit for supplying humidified air during the heating operation of the suction unit The air inlet is made to correspond to the upstream side of the circulation path, the air inlet and the air outlet are connected to the air duct of the circulation path, and branched from the exhaust path from the bathroom. The humidified air supply path Airborne contaminant removal apparatus in circulating ventilation system, characterized in that connected to the air supply unit. Vessel provided dedusting unit of thermal resistance to the inlet side of the suction part of the body, the dust removal unit provided with a heatable heater, providing the outlet of the heating product to claim 1 or 2, characterized in An air pollutant removing device in the described circulation type ventilation system .

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