JP2003202129A - Air-conditioning system, air conditioning method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air-conditioning system, air-conditioning method and a program to execute the air-conditioning method with a computer capable of detecting and removing microbes in the air harmful to the human body to secure the safety of the human body swiftly and comprehensively. <P>SOLUTION: As to the air taken in, filtration of harmful microbes is performed by a harmful microbes filtering device capable of switching filter parts, and detection of harmful microbes is performed by a harmful microbes detecting device for analyzing samples collected from the intake side of the harmful microbes filtering device or from both of the intake and outlet side of the harmful microbes filtering device. The filter parts are sterilized by a sterilizer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for detecting and removing microorganisms harmful to a human body in an air conditioning (air conditioning) system.

[0002]

2. Description of the Related Art Conventionally, in an air conditioning system, a device for detecting a microorganism harmful to a human body or a device for removing the microorganism has been known.

[0003]

However, a technique for organically associating a technique for detecting harmful microorganisms in the human body with a technique for removing the same to totally guarantee the safety of the human body has not been realized yet. It has not been done, or if it has been realized, it is insufficient.

Filtration by a filter is effective as a method for removing microorganisms in the air, but since it causes clogging or is contaminated by microorganisms, it can be replaced with a new one, and the old one can be discarded or regenerated. Will be needed. Contamination may spread during replacement, disposal and recycling.

Regarding the detection of contamination by microorganisms for determining the filter replacement time, a method of detecting microorganisms from a filter by using an apparatus for detecting microorganisms harmful to the human body can be considered. Has a lot of time, and when it is detected, it is considered to be too late due to the progress of contamination to the outlet side of the filter in use.

The invention of the present application organically links the technology for detecting harmful microorganisms in the air to the human body and the technology for removing the same to guarantee the safety of the human body promptly and comprehensively. It provides technology.

Still another object and advantage of the present invention are:
It will be apparent from the following description.

[0008]

According to one aspect of the present invention, a filter device for harmful microorganisms capable of switching a filter portion without opening it to the outside, and a used filter portion that has been switched are opened to the outside. A sterilizer capable of performing sterilization without a sterilizing device, and a harmful microorganism detecting device or particle concentration for analyzing a sample collected from the inlet side of the harmful microorganism filter device or from the inlet side and the outlet side of the harmful microorganism filter device. An air conditioning system comprising a combination of a measuring device and a harmful microorganism detecting device.

According to another aspect of the present invention, a step of filtering harmful microorganisms in the taken-in air by a harmful microorganism filter device capable of switching the filter portion without being opened to the outside, and the harmful microorganism filter device. The air-conditioning method includes a step of analyzing harmful microorganisms or analyzing particle concentration and harmful microorganisms with respect to a sample collected from the inlet side or the inlet side and outlet side of the harmful microorganism filter device.

Yet another aspect of the present invention is a program for causing a computer to execute such an air conditioning method.

In the present invention, it is considered that the sample is taken from the inlet side of the harmful microorganism filter device and the sample is taken from the outlet side thereof in each of the particle concentration analysis and the harmful microorganism analysis. Any of them may be used as long as they match the spirit of the invention, or a combination thereof may be used. In the following, unless otherwise specified, generally, a more preferable sample is collected from the entrance side of the harmful microorganism filter device. It is explained as a thing.

When the above system, method or program is used, for example, an abnormality relating to harmful microorganisms is detected from a sample collected from the inlet side of the harmful microorganism filter device, and the filter portion of the harmful microorganism filter device is switched. Since the operation of sterilizing the switched used filter portion can be performed without opening it to the outside, it is possible to quickly and comprehensively ensure the safety of the human body and the like.

Further, in the present invention, it is preferable to select the performance of the filter portion in accordance with predetermined harmful microorganisms in order to make the technology for totally ensuring the safety of the human body and the like more reliable.

When a filter having too low a harmful microorganism collection performance (removal performance) is used (that is, a filter in which the size of particles that can be removed is too large), the collection of harmful microorganisms is incomplete, while the harmful microorganism collection is When using a filter with too high performance (removal performance) (that is, a filter with a too small particle size that can be removed), the back pressure of the filter increases, and the wasteful consumption of energy increases,
Problems such as increased risk of filter damage due to high back pressure, attempting to prevent this will require unnecessarily robust equipment, and shortened filter life. Is caused.

The filter portion collects particles having a diameter of 0.3 μm.
It may be preferable to have filtration performance capable of removing 9.97% or more. Also, 9 particles with a diameter of 0.15 μm
It may be more preferable to have the ability to remove 9.9995% or more.

That is, when the predetermined harmful microorganism is B. anthracis, a filter part having a performance capable of removing 99.97% or more of particles having a diameter of 0.3 μm is used, and the predetermined harmful microorganism is smallpox virus. When it is, it is preferable to use a filter portion having a performance capable of removing 99.9995% or more of particles having a diameter of 0.15 μm.
In addition, this performance is HE according to JIS8122-1994.
It relates to PA filters and ULPA filters. Moreover, it is at the rated flow rate (maximum air volume).

Further, when a particle concentration of a predetermined value or more is detected, the harmful microorganisms are automatically analyzed. When a particle concentration of the predetermined value or more and / or a predetermined harmful microorganism is detected, harmful harmful microorganisms are detected. Performing at least one of switching the filter part in use by the microorganism filter device without opening it to the outside and sterilizing the switched used filter part without opening it to the outside. It is preferable that

Further, switching of the filter portion and / or
Alternatively, it is preferable that the sterilization process is automatically performed.

This is because it is possible to guarantee the safety of the human body and the like more quickly and comprehensively.

At this time, when the particle concentration measuring device detects a particle concentration of a predetermined value or more, the harmful microorganism detecting device is designed to automatically analyze the collected sample. When detecting a predetermined particle concentration and / or when a harmful microorganism detecting device detects a predetermined harmful microorganism, the harmful microorganism filter device is designed to automatically switch the filter part in use, and sterilization is performed. Desirably, it can be realized that the device is adapted to automatically sterilize the switched used filter parts.

This is because the treatment can be carried out quickly and it is easy to prevent the human body from being contaminated. However, it may be performed manually or semi-automatically instead of automatically.

Further, it is preferable that the alarm device issues a predetermined alarm when a particle concentration of a predetermined value or more and / or a predetermined harmful microorganism is detected.

Notifying many people of a warning as a general warning is unnecessarily confusing and is often undesirable.

According to the present invention, for example, a department in which a safety expert or the like who is familiar with the structure of the air conditioning system according to the present invention is stationed, or an alarm device carried by the safety expert or the like issues an alarm, You can take timely safety measures.

Further, the air taken in is a suction filter and a device for controlling temperature and / or humidity (air conditioner).
It is preferably air treated with and. This is because the effect of the present invention can be sufficiently exhibited in combination with an ordinary air conditioner.

However, it may not be necessary when it is used to control exhaust gas from a place where so-called biohazard countermeasures are required such as a bacterial laboratory which handles harmful microorganisms described later or where biological containment is required. Many.

In some cases, it is preferable that the sterilization process is automatically started when the harmful microorganisms detected by the harmful microorganism detecting device are not detected in the sample collected at a predetermined time or when it is satisfied. Many.

According to the above, when the predetermined time for collecting the air sample is selected, for example, at the same time as when the filter portion is switched, and a signal indicating that no harmful microorganism is detected by the harmful microorganism detecting device is received. For the first time, sterilization is not performed, and if harmful microorganisms are detected, sterilization is not performed, and the filter part is removed so that contamination does not leak to the outside.For example, the filter part is contaminated in the direction of air flow. It will be possible to investigate the progress status of, and it will be possible to secure more complete safety of the human body.

It should be noted that it is often preferable to carry out the sterilization treatment in spite of the fact that harmful microorganisms were not detected in order to thoroughly remove the contamination even at a low concentration.

Further, when the purpose is not to grasp the contamination state of the filter, unlike the above, a signal indicating that harmful microorganisms have been detected by the harmful microorganism detecting device in the sample collected at a predetermined time is received. In such a case, starting the sterilization treatment can reduce wear due to the sterilization treatment of the filter portion and may be preferable in some cases.

Furthermore, it is possible to select both of them as appropriate.

Further features of the present invention will be clarified in the embodiments of the invention and the drawings described below.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that these drawings and description are for exemplifying the present invention and do not limit the scope of the present invention. It goes without saying that other embodiments, including any combination of the various aspects described above, can be included in the scope of the present invention as long as they match the gist of the present invention.

Although the present specification mainly describes contamination to the human body, the present invention is also applicable to contamination to other animals and plants. In the present specification, the term "human body or the like" means that animals and plants other than human beings are also considered.

FIG. 1 shows an air conditioning system having an air intake 1 having an intake filter and a temperature control and / or humidity control device (air conditioner) 2 in this order.

That is, the air before air conditioning is supplied from the air intake port 1 with a suction filter to the suction device 3 of the air conditioner 2.
Is supplied to the user department 5 that uses the conditioned air after being sucked by, and heated by the heater 4 as necessary, cooled by an air conditioner (not shown), dehumidified, humidified, or the like.

On the other hand, FIG. 2 is a model diagram showing an example of the air conditioning system according to the present invention.

In FIG. 2, up to the air conditioner 2 is the same as in FIG. The air exiting the air conditioner 2 is filtered and collected by the harmful microorganism filter device 6 and then supplied to the user department 5.

The harmful microorganism detecting device 8 collects a sample of the air on the inlet side of the harmful microorganism filter device through a sampling pipe 10 branched from an air conduit 9 supplied to the harmful microorganism filter device 6, and determines it. To analyze the presence or absence of harmful microorganisms. The presence or absence of harmful microorganisms can be arbitrarily determined, such as detecting that harmful microorganisms are present when the concentration exceeds a predetermined level of bacteria or viruses.

In this case, the concentration of harmful substances in the air is determined according to a certain relationship from the analytical value and the amount of air taken, and when this value reaches a certain level, it may be detected that harmful microorganisms are present. it can. In this case,
Furthermore, it is possible to divide the level into several stages and issue various alarms such as pseudo-dangerous stage, dangerous critical stage, and true-dangerous stage, which can be included in the present invention.

If necessary, the air sample obtained from the outlet pipe of the harmful microorganism filter device through the sampling pipe 11 can be analyzed.

It is not always necessary to use piping, but other methods such as transferring the sample container may be used.

These can be automatically switched by using a predetermined computer program by making the valves 12 and 13 automatic switching valves.

In FIG. 2, the filter device 7 for harmful microorganisms is divided into a filter portion 7 as a hatched area 7a, and by rotating this division 7a, the filter portion 7 is not opened to the outside. It is possible to switch. It can be automatically switched.

In the present invention, the term "filter device for harmful microorganisms" means a device having a filter performance capable of filtering and collecting harmful microorganisms, and therefore it can be selected according to the kind of target harmful microorganisms. it can.

In the present invention, according to its purpose,
It is possible to use any known filter.

As such a filter, a HEPA filter and a ULPA filter are known in the JIS standard.

According to JIS8122-1994, at the rated flow rate (maximum air volume), the former has a performance of removing 99.97% or more of particles having a diameter of 0.3 μm, and the latter has a performance of removing particles having a diameter of 0.15 μm from 99.97. It has the ability to remove 9995% or more.

Examples of harmful microorganisms targeted by the present invention include bacteria such as anthrax, pesto, and botulinum, and viruses such as smallpox virus. For example, anthrax has a size (1-2 μm). ) × (5 to 10 μm), and it is suitable to collect by filtration with a HEPA filter.

On the other hand, smallpox virus is smaller than that,
Since it is about 0.2 μm, it is better to use a ULPA filter.

Switching of the filter portion in the harmful microorganism filter device may be performed by any known method. As shown in FIG. 2, the method in which the ring-shaped filter portion rotates is preferable in terms of making the equipment compact, but as shown in FIG. 3, a plurality of harmful microorganism filter devices may be arranged in parallel. .

In the present invention, switching the filter portion without opening it to the outside means that the filter portion to be switched and its attached portion and the switched filter portion and its attached portion are both filtered. It means that the part and the accessory part are exposed to the outside, or the air contacting the filter part and / or the accessory part does not flow out.

Here, the above-mentioned attached portion is a portion that can be physically switched when the filter portion is switched, and a filter stay (support) can be exemplified. The exposure of the filter part and its attached part to the outside is mainly to prevent contact infection, and the prevention of air outflow is mainly to prevent air infection.

In FIG. 2, "EB sterilization" means electron beam sterilization, which is an example of the sterilizer according to the present invention. That is, the filter portion can be sterilized by an electron beam sterilizer (not shown in FIG. 2) and can be recycled or discarded.

As a sterilizing apparatus according to the present invention,
Any other known sterilization device can be used as long as it conforms to the gist of the present invention. For example, a gamma ray irradiation device and an ultraviolet irradiation device can be exemplified.

FIG. 4 shows such an electron beam sterilizer.
As shown in FIG. 5, a device as disclosed in Japanese Patent Laid-Open No. 6-142165 can be used.

That is, in FIG. 4, the electron beam 103 is irradiated from the filament 102 of the electron beam generator 101 of the electron beam irradiation apparatus to the irradiation space 104, and collides with gas molecules in the irradiation space 104 to generate scattered electrons. In addition, the irradiated object 105 is directly irradiated with the reflected electrons and 2
Secondary electrons are generated, and the inner and outer surfaces of the irradiated object are sterilized by irradiating the portion of the irradiated object 105 which is not directly irradiated with the electron beam with scattered electrons, reflected electrons and secondary electrons. Note that the backscattered electrons and the secondary electrons do not necessarily have to be used.

In the present invention, the sterilization without opening to the outside means that the above-mentioned switched filter portion and its attached portion are exposed to the outside before or during the sterilization treatment. It means that the air contacting the part and / or the accessory part does not flow out.

As the harmful microorganism detecting device 8, any known technique can be used depending on the harmful microorganism to be targeted.

For example, a detection method combining a gene amplification method by PCR (polymerase chain reaction) and an electrophoresis method, a method using a DNA chip on which a DNA amplification module and a DNA probe are immobilized, and an antigen-antibody reaction are used. Then, a fluorescent substance is added to the corresponding antibody, and this is reacted with a microorganism to detect fluorescence.

As a detection method in which a gene amplification method by PCR (polymerase chain reaction) and an electrophoresis method are combined, for example, an apparatus / method disclosed in JP-A-7-75544 can be used.

Further, another apparatus / method disclosed in Japanese Patent Laid-Open No. 2000-88854 can be used.

A plurality of such detection devices may be installed.

In the case of anthrax, for example, the detection time of harmful microorganisms by such a device is 40 minutes to 1 hour, which is the shortest example. Depending on the type of harmful microorganisms, it may take several hours or longer.

Therefore, it may be desirable to use a particle concentration measuring device and a harmful microorganism detecting device in combination instead of the harmful microorganism detecting device. In the latter case, the harmful microorganism detecting device 8 in FIG. 2 can be read as a combination 8 of the particle concentration measuring device and the harmful microorganism detecting device.

That is, the particle concentration measuring device analyzes the particle concentration in the air of particles having a predetermined particle size, and when the particle concentration rises and reaches a particle concentration above a predetermined value, harmful microorganisms are detected. Alternatively, assuming that the concentration of harmful microorganisms has increased and combining this with analysis of harmful microorganisms by a harmful microorganism detection device as appropriate, the advantage that the particle concentration analysis by a particle concentration measurement device is generally relatively short By utilizing, it becomes possible to quickly ensure the safety of the human body.

As the particle concentration measuring device, a known device such as a device using a laser can be used. Further, the particle concentration analysis may be carried out discontinuously or manually, but it is often preferable because it can be carried out continuously or automatically.

In addition, the predetermined particle size and the predetermined particle concentration may define a plurality of levels in some cases, and a predetermined increase rate of the particle concentration may be included as an auxiliary condition when the predetermined concentration is reached. You can also The predetermined particle diameter, the predetermined particle concentration, and the predetermined rising speed can be arbitrarily determined. The particle concentration according to the present invention can mean the particle concentration in the air, but in addition to that, the number of particles in a constant suction time of the sample, the number of particles in a certain analyzed space, the analyzed space at a certain moment It goes without saying that the number of passing particles and the like can be appropriately changed according to the actual condition of the measuring device.

The above-mentioned air conditioning method according to the present invention is exemplified as follows.

(Conditions of System Used) A system as shown in FIG. 2 is used.

B. anthracis is selected as a harmful microorganism.

The HEPA filter is adopted in the filter portion of the harmful microorganism filter device.

The filter part according to the present invention can be used for a long time as long as it is not contaminated by harmful microorganisms or clogged, but here, the filter part is opened to the outside every year. Instead, it shall be possible to switch manually. It should be noted that it is possible to easily make it possible to switch automatically by using a known technique.

As the particle concentration measuring device, a laser type particle counter is used, and the opening / closing of the valve 12 and the opening / closing of 13 are switched every 5 minutes from the air conduit 9 and the sample is sampled through the sampling pipe 10. Samples should be taken every 5 minutes and the particle concentration can be analyzed. The analysis time is 5 minutes. At this time, the sample on the output side of the filter device 6 can be analyzed by using the time every other 5 minutes. It is also possible to continuously collect samples from the air conduit 9 and analyze them continuously.

Using a laser type particle counter,
When the laser type particle counter detects a particle concentration of particles having a diameter of 1 to 2 μm that is equal to or higher than a predetermined value, the harmful microorganism detecting apparatus automatically collects a sample and analyzes the anthrax for the sample. To do.

When the laser type particle counter detects a particle concentration equal to or higher than a predetermined value and / or when the harmful microorganism detecting device detects anthrax, the filter portion can be automatically switched immediately.

The harmful microorganism detecting device detects the presence or absence of B. anthracis in 40 minutes.

It is assumed that the EB sterilizer can sterilize the HEPA filter in 30 seconds, and the sterilized filter part is discarded without being reused. However, depending on the degree of clogging of the sterilized filter portion and deterioration due to sterilization, it may be possible to reuse.

The sterilization of the switched used filter part shall be carried out automatically after it is confirmed that anthrax is not detected in the air sample after the filter part has been switched.

In this case, it may be useful to add, as a condition for the above-mentioned automatic sterilization, that a certain period of time has elapsed after switching. This is because, for example, if a time such as several hours to one day is specified, even if it is desired to stop the automatic sterilization for some reason, a time margin for executing the automatic sterilization can be secured.

When the laser type particle counter detects a particle concentration equal to or higher than a predetermined value, the air-conditioning system controller 14 including a computer for controlling the present air-conditioning system under the control of a predetermined safety manager. An alarm display and an audio alarm indicating that an abnormality relating to harmful microorganisms may have occurred are transmitted to the display. The display in this case is an example of the alarm device according to the present invention.

Further, when the harmful microorganism detecting device detects a predetermined harmful microorganism, an alarm display and voice indicating that anthrax bacteria have been detected are displayed on the display of the air conditioning system control device 14 under the control of a predetermined safety manager. An alarm and shall be sent.

When an alarm is issued, the air blow of the air conditioner itself is automatically stopped.

When the laser type particle counter detects a particle concentration of a predetermined value or more, air is also collected from the sampling pipe 11 on the filter portion outlet side, and the sample also has a particle concentration of a predetermined value or more. If detected, it is possible to automatically start the detection of B. anthracis even for the sample collected from the outlet side of the filter portion as in the above.

In this case as well, an alarm indicating that the display of the air conditioning system control device 14 under the control of a predetermined safety manager may have generated an abnormality relating to harmful microorganisms or that anthrax has been detected is appropriately issued. It is also possible to issue a display and a voice alarm.

The entire system is executed by a computer program using the air-conditioning system controller 14 for controlling the air-conditioning system, and information is exchanged electronically.

(System operating status) The operating status of the system when using such equipment is shown in FIG. 2 and FIG.
In the following description, the harmful microorganism filter device is used according to step S1 of FIG.

Further, according to step S2, the analysis of the particle density by the laser type particle counter is started every 5 minutes.

Then, in step S3, it is determined whether or not the laser type particle counter detects a particle concentration equal to or higher than a predetermined value. If not detected (N), the data is recorded in step S4.

In the case of detection (Y) according to step S3, the data is recorded according to step S4, and according to step S5, the display of the air conditioning system control device 14 under the predetermined safety manager of FIG. 2 is displayed. Then, an alarm display and a voice alarm (preliminary alarm) indicating that an abnormality related to harmful microorganisms may have occurred are transmitted. Further, according to step S6, the filter part of the harmful microorganism filter device is switched without being opened to the outside, and according to step S7, the harmful microorganism detecting device automatically starts the analysis of anthrax bacteria.

When the laser type particle counter detects a particle concentration equal to or higher than a predetermined value, it is possible to automatically switch the filter portion after waiting for the analysis result of the harmful microorganism detecting device. I will not do it.

If the harmful microorganism detecting apparatus does not detect the anthrax bacterium according to step S8 (N), the data is recorded according to step S4, and according to step S9, the designated safety manager of FIG. A display of a certain air conditioning system controller 14 indicates that there is no risk of contamination by anthrax. As a result, the safety manager can take precautions or carefully perform reanalysis by the harmful microorganism detecting device.

When the harmful microorganism detecting apparatus detects anthrax according to step S8 (Y), the data is recorded according to step S4, and according to step S10,
The display of the air-conditioning system control device 14 under the predetermined safety manager in FIG. 2 indicates that there is a risk of contamination by anthrax and warns.

Further, according to step S11, the ventilation of the air conditioner itself is automatically stopped.

As a result, the safety manager can promptly take appropriate measures.

The used filter part that has been switched is confirmed to have no anthrax in the air sample after the filter part has been switched according to step S12 (N), and then to the outside according to step S13. It is sterilized automatically without being opened and is discarded.

When B. anthracis is detected (Y), automatic sterilization is not performed according to step S14, and the filter portion is stored as it is. This is for removing the filter portion later so that the contamination does not leak to the outside, for example, for investigating the progress status of the contamination in the air flow direction of the filter portion.

If such a post-investigation is not carried out, sterilization may be started automatically.

When such equipment is used and no anthrax bacterium has entered the air conditioning system, no alarm is given, and the particle concentration data by the laser type particle counter or the anthrax bacterium is not detected. The results of the analysis by the harmful microorganism detecting device of are recorded together with the analysis time. The filter part is continuously used for one year unless a problem due to clogging occurs. And no special action is required.

On the other hand, if B. anthracis invades the air conditioning system, theoretically there is a high possibility that it can be detected after 40 to 45 minutes.

At this time, judging from the performance of the harmful microorganism filter device, the anthrax bacteria should not leak to the outlet side of the harmful microorganism filter device. However, as a precaution, the filter part is automatically switched.

At this time, since the blast of the conditioned air is stopped, even if the outlet side of the harmful microorganism filter device is contaminated, the degree of diffusion thereof will be small.

Furthermore, since a warning is sent to a safety expert,
Prompt post-treatment is possible.

Moreover, since the filter portion that may be contaminated with B. anthracis is left unsterilized, it is possible to confirm at which point the contamination started and how much the contamination was. If you do not need such confirmation,
It can also be sterilized with a B sterilizer. If a system that separately stores sampled air for a certain period of time is provided, a more complete past contamination history can be grasped.

Therefore, it is possible to swiftly and comprehensively ensure the safety of the human body by detecting and removing microorganisms harmful to the human body in the air.

When foreign matter such as dust that cannot be removed by the EB sterilizer is accumulated and the filter portion is blocked, it is necessary to replace the filter portion. It is possible to judge by looking at the pressure difference between the entrance and the exit of the filter device for harmful microorganisms.

With regard to the sterilizer, when it does not take so long to detect harmful microorganisms, the sterilization is started after a certain time has elapsed after switching the filter portion, without waiting for the detection of harmful microorganisms as described above. Is also good.

The system and method according to the present invention can be applied to a place where a large number of people, such as buildings of public offices and post offices, public halls, factories, buildings in which corporate employees are active, hotels, meeting places, trade fairs, etc. Can be installed. In such a case, the cause of unspecified pollution such as terrorist activity will be mainly dealt with.

The system and method according to the present invention can also be used for controlling exhaust gas from a place where so-called biohazard countermeasures or a place where biological containment is required, such as a bacterial laboratory which handles harmful microorganisms. . In this case, since the pollution source is specified, it is easy to select a harmful microorganism detecting device or a filter type suitable for it. Further, even when the type of pollution source is changed, it is often sufficient to replace only a part of the device.

In such a case, the idea of the user department described above cannot be applied, and it is often aimed at ensuring the safety of the human body or the like in an unspecified place outside the predetermined place. The present invention also covers such a case.

Further, from the viewpoint of coping with such a biohazard, the present invention is not limited to the earth,
It can also be applied to applications in outer space.

The system and method according to the present invention are
You may use two or more in series and / or parallel.

[0113]

Industrial Applicability The microorganisms harmful to the human body in the air can be detected and removed, and the safety of the human body can be secured quickly and comprehensively.

[Brief description of drawings]

FIG. 1 shows an air conditioning system having an air intake having an intake filter and an air conditioner in this order.

FIG. 2 is a model diagram showing an air conditioning system according to the present invention.

FIG. 3 is a model diagram showing a state in which a plurality of harmful microorganism filter devices are arranged in parallel.

FIG. 4 is a diagram illustrating an electron beam sterilizer.

FIG. 5 is a flow chart showing an example of an air conditioning method according to the present invention.

[Explanation of symbols]

1 air intake 2 air conditioners 3 suction device 4 heater 5 user departments 6 Filter device for harmful microorganisms 7 Filter part 7a Divided area 8 Harmful microorganisms detector 9 air conduit 10 Sampling pipe 11 Sampling pipe 12 valves 13 valves 14 Air conditioning system controller

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naohiko Ugawa             4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture               Mitsubishi Heavy Industries Ltd. Hiroshima Research Center F-term (reference) 3L053 BD03 BD05                 3L060 AA05 CC19 DD01 DD06 EE45                 3L061 BC05                 4D058 JA13 JB50 MA52 NA02 PA01                       PA12 QA01 QA11 SA13 SA20

Claims (15)

[Claims] 1. A filter device for harmful microorganisms capable of switching a filter portion without being opened to the outside, and a sterilizing device capable of sterilizing a switched used filter portion without being opened to the outside. A harmful microorganism detecting device or a combination of a particle concentration measuring device and a harmful microorganism detecting device for analyzing a sample collected from the inlet side of the harmful microorganism filter device or from the inlet side and the outlet side of the harmful microorganism filter device. An air conditioning system comprising: 2. The air conditioning system according to claim 1, wherein the filter portion has a performance of removing 99.97% or more of particles having a diameter of 0.3 μm. 3. The air conditioning system according to claim 1, wherein the filter portion has a capability of removing 99.99995% or more of particles having a diameter of 0.15 μm. 4. The particle concentration measuring device, wherein the harmful microorganism detecting device has a function of automatically analyzing a sample collected when the particle concentration measuring device detects a particle concentration of a predetermined value or more. When the predetermined particle concentration is detected and / or when the harmful microorganism detecting device detects a predetermined harmful microorganism, the harmful microorganism filter device has the ability to automatically switch the filter part in use. The sterilization device has the capability of automatically sterilizing the switched used filter portion.
The air conditioning system according to any one of 1 to 3. 5. An alarm device for issuing an alarm when the particle concentration measuring device detects a particle concentration equal to or higher than a predetermined value and / or when the harmful microorganism detecting device detects a predetermined harmful microorganism. Claim 1 characterized by the above-mentioned.
The air conditioning system according to any one of to 4. 6. Before the harmful microorganism filter device,
The air conditioning system according to claim 1, further comprising an air intake port, an intake filter, and a temperature control and / or humidity control device (air conditioner). 7. A step of filtering harmful microorganisms by a filter device for harmful microorganisms capable of switching the filter portion of the taken-in air without being opened to the outside, and an entrance side of the filter device for harmful microorganisms or the harmful microorganisms. A method for air conditioning, comprising the steps of analyzing harmful microorganisms or analyzing particle concentration and harmful microorganisms with respect to samples collected from the inlet side and the outlet side of the filter device for use. 8. The air conditioning method according to claim 7, wherein the filter portion of the harmful microorganism filter device has a capability of removing 99.97% or more of particles having a diameter of 0.3 μm. 9. The air conditioning method according to claim 7, wherein the filter portion of the harmful microorganism filter device has a capability of removing particles having a diameter of 0.15 μm by 99.995% or more. 10. A step of automatically analyzing the harmful microorganisms when a particle concentration of a predetermined value or more is detected, and when a particle concentration of the predetermined value or more and / or a predetermined harmful microorganism is detected. , At least one of the step of switching the filter part in use by the harmful microorganism filter device without opening it to the outside, and the step of sterilizing the switched used filter part without opening it to the outside The air-conditioning method according to any one of claims 7 to 9, further comprising: 11. Switching of the filter portion and / or
Alternatively, the air conditioning method according to any one of claims 7 to 10, wherein the sterilization process is automatically performed. 12. The sterilization process is automatically started when a harmful microbe detected by the harmful microbe detection device is not detected in a sample collected at a predetermined time or when it is satisfied. The air conditioning method according to claim 11, wherein: 13. The air conditioning method according to claim 7, wherein an alarm device issues an alarm when a particle concentration of a predetermined value or more and / or a predetermined harmful microorganism is detected. 14. The air conditioner according to claim 7, wherein the taken-in air is air treated by an intake filter and a device for controlling temperature and / or humidity (air conditioner). Method. 15. A program for causing a computer to execute the air conditioning method according to any one of claims 7 to 14.