WO2022114148A1 - Pollutant control system, return air device, and control method therefor - Google Patents

Pollutant control system, return air device, and control method therefor Download PDF

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Publication number
WO2022114148A1
WO2022114148A1 PCT/JP2021/043477 JP2021043477W WO2022114148A1 WO 2022114148 A1 WO2022114148 A1 WO 2022114148A1 JP 2021043477 W JP2021043477 W JP 2021043477W WO 2022114148 A1 WO2022114148 A1 WO 2022114148A1
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WO
WIPO (PCT)
Prior art keywords
air
return air
return
target space
control system
Prior art date
Application number
PCT/JP2021/043477
Other languages
French (fr)
Japanese (ja)
Inventor
哲元 王
詩 蔡
文清 呉
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ダイキン工業株式会社
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Publication of WO2022114148A1 publication Critical patent/WO2022114148A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a pollutant control system for controlling air pollutants in a target space.
  • the present invention further relates to a return air device for sucking air pollutants in the target space.
  • the present invention further relates to a method for controlling an air return device.
  • the present invention has been made in view of the above-mentioned problems, and is a route by which air pollutants in the target space are diffused due to the diffusion of air pollutants in the target space by rapidly sucking the pollutants. It is an object of the present invention to provide a pollutant control system, an air return device, and a control method thereof, which help prevent or suppress the influence on the physical and mental health of a person in the area.
  • the present invention includes a pollutant control system for controlling air pollutants in a target space, and includes a return air device having a return air port and a return air fan.
  • the return air port is provided at the lower part of the target space, and the return air fan operates at a preset rotation speed and sucks air in the target space through the return air port to return the air return port.
  • a pollutant control system that suppresses the tendency of air pollutants to diffuse upward in a region (corresponding to an effective suction region of a return air device) in which the distance to the air vent is less than or equal to a preset distance. ..
  • the "air pollutant” may be dust particles, CO 2 , harmful gases (eg, formaldehyde, TVOC), virus bacteria, etc.
  • the "lower part of the target space” includes the bottom of the target space, and also.
  • "Preset rotation speed” can be set to, for example, the rotation speed to drive the motor of the return air fan, and "preset distance” is a specific source of contaminants in the target space. Can be set corresponding to.
  • the return air device includes a return air port and a return air fan, the return air port is provided at the lower part of the target space, and the return air fan is a preset rotation.
  • the return air fan is a preset rotation.
  • the return air device has a case having the return air port and the return air fan provided inside.
  • the return air port and the return air fan of the return air device may be separate and connected via the return air space, and the return air space may be a space under a fictitious floor or is limited by an air duct. You may.
  • the preset rotation speed is set to increase as the concentration of air pollutants increases, or the preset distance is set. It is set to increase as the preset rotation speed increases.
  • the preset rotation speed of the return air fan of the return air device is adjusted based on the distance between the air pollutant and the return air port of the return air device, and the air is adjusted.
  • the region covers a range of 0.4 m to 1.9 m above the ground in the target space, or the region is the target.
  • the area covers a range of 0.7 m to 1.4 m above the ground in the space, or the area covers a range of 0.7 m to 1 m above the ground in the target space.
  • 1.9 m corresponds to the standing height of an adult
  • 0.4 m corresponds to the height of a person's seat / chair surface
  • 0.7 m corresponds to the sitting height of a child
  • 4 m corresponds to the sitting height of an adult
  • 1 m corresponds to the height at which the snout is located when the adult is sitting.
  • the effective suction area of the return air device covers the range of 0.4 m to 1.9 m above the ground in the target space, so that the contaminants are contained in the target space. It is possible to relatively reliably prevent or suppress cross-infection of personnel in the target space due to the spread upward and spread throughout the target space, and at the same time, the covering surface of the area is too large to return air. Since it is not necessary to increase the rotation speed of the fan, the power consumption can be reduced.
  • the air return device has a plurality of the preset rotation speeds corresponding to the plurality of the preset distances, and is described according to an actual situation.
  • the preset rotation speed corresponding to the preset distance can be manually or automatically selected.
  • the air return device has a plurality of preset rotation speeds corresponding to a plurality of preset distances, and corresponds to a preset distance according to an actual situation. Since the preset rotation speed can be selected manually or automatically, it helps to save energy and further expands the range of mounting locations.
  • the return port has an obstacle located in the target space, the bottom of the target space, and the obstacle and the bottom of the target space. It was provided at one or more positions of the space between them.
  • the obstacles are, for example, tables, shelves, cabinets, and the like.
  • the return air opening is provided in an obstacle, it is relatively energy-saving because it is closer to the human snout.
  • At least one return port is provided in a projection space in which the obstacle is projected vertically toward the bottom of the target space, or is provided. It was provided in a vertical projection at the bottom of the target space by the obstacle.
  • At least one return port is provided in a projection space in which an obstacle is projected vertically toward the bottom of the target space, or is provided in the target space due to the obstacle. Since it is provided in the vertical projection at the bottom, it helps to prevent the return air opening from being blocked by the movement of a person in the target space, and further helps to reduce the operating noise of the return air device.
  • At least one of the return ports is provided on the floor below the obstacle.
  • At least one return port is provided on the floor below the obstacle, so that the person avoids the area where the person is walking and the person trips over the return air device and falls. While avoiding risks, it helps to prevent the return air opening from being frequently blocked by the movement of people in the target space, and also helps to reduce the operating noise of the return air device.
  • At least one of the return ports is provided in the vicinity of the peripheral edge of the vertical projection at the bottom of the target space by the obstacle.
  • the return port since at least one return port is provided near the periphery of the vertical projection at the bottom of the target space due to the obstacle, the return port is the bottom of the target space due to the obstacle.
  • the return air port is closer to the pollution source than it is located near the center of the vertical projection in, reducing the amount of return air required to reduce power consumption and reduce the operating noise of the return air device. Helps to do.
  • the return port is provided at the center position of vertical projection at the bottom of the target space by the obstacle.
  • the return air port is provided at the center position of the vertical projection at the bottom of the target space due to the obstacle, so that the contaminants on both sides of the obstacle can be treated uniformly. ..
  • the air return device includes a case where a plurality of air return ports separated from each other are provided.
  • the return air device includes a case where a plurality of return air ports are provided so as to be separated from each other, so that the return air device is close to the pollution source and helps to reduce the required return air amount. Thereby, the power consumption can be reduced and the operating noise of the return air device can be reduced.
  • the return air port preferably has a long shape (for example, a rectangle), and the long side corresponds to the side where the pollution source is located.
  • the air pollutant has a long shape and the long side corresponds to the side where the pollution source is located, so that air pollutants are sucked into the air return device. Is even more advantageous.
  • the air return device is provided so that one or both of the area of the return port and the preset rotation speed can be adjusted.
  • the return air device is provided so that one or both of the area of the return air port and the preset rotation speed can be adjusted, so that the person in the target space or the like can change. Therefore, it becomes easy to operate the return air device with the most energy saving, reduce the power consumption, and reduce the operating noise of the return air device.
  • an exhaust device for exhausting air to the outside of the target space which is preferably connected to the return air device, is further included.
  • the pollutant control system since an exhaust device connected to the return air device for exhausting air to the outside of the target space is further included, air pollutants sucked into the return air device are taken outdoors.
  • the device is relatively simple and can handle air pollutants sucked into the air return device in a simple manner.
  • the pollutant control system preferably further includes an air purification device for purifying air pollutants connected to the air return device.
  • the air purification device for purifying the air pollutant connected to the air return device since the air purification device for purifying the air pollutant connected to the air return device is further included, the air pollutant is completely removed and sucked into the air return device. It becomes easy to avoid the secondary pollution caused by the air pollutants that have been used.
  • the contaminant control system preferably further includes an air supply device, and the air supply direction of the air supply device is such that air is supplied from the top of the target space toward the target space.
  • the air supply direction of the air supply device is such that air is supplied from the top of the target space toward the target space.
  • an air supply device is further included, and the air supply device directly or indirectly sends air downward to the lower side of the target space, and in some cases, in the space where the air pollutant is located. It does not act directly on the air pollutants and can be prevented from being blown off at a low position.
  • the pressure balance in the target space is realized, and the air pollutants in the target space are diffused upward by forming the target space with a slight positive pressure. It is even easier to prevent or control cross-infection of personnel within the target space due to the spread throughout the target space.
  • the air outside the target space does not enter the target space, for example, the outside air does not enter the room through the gaps in the doors and windows, and from other contaminants. Further avoid the effects of.
  • the air supply device is provided on the upper part of the side wall of the target space, and / or the air supply device is due to an obstacle in the target space. It was provided outside the vertical projection at the top of the target space.
  • the air supply device is provided on the upper part of the side wall of the target space, and / or the air supply device is a vertical projection at the top of the target space by an obstacle in the target space. Since it is installed outside, the air supply of the air supply device collides with obstacles in the target space to form backflow, vortex and turbulence, spreads throughout the target space, and cross-infects personnel in the target space. Can be avoided. In conventional clean rooms, etc., pollutants are prevented from diffusing to the surroundings by forming a vertical air flow using the discharge ports and return air ports provided corresponding to the top and bottom. This is because clean rooms are required to be as free of obstacles as possible, otherwise they will affect the airflow structure.
  • the air supply air velocity of the air supply device is set to be equal to or lower than the preset suction air velocity.
  • a preset suction air velocity is formed by a preset rotation speed, and the air supply air velocity of the air supply device is set to be equal to or lower than the preset suction air velocity.
  • the pollutant control system preferably further includes a return air passage and an air treatment device having at least one of an exhaust device and an air purification device, and the return air passage is the return air device and the air purification device.
  • the airflow connected to the air treatment device and flowing out of the return air device enters the air treatment device through the return air passage.
  • a return air passage and an air treatment device having at least one of an exhaust device and an air purification device are further included, and the return air passage is connected to the return air device and the air treatment device.
  • the airflow that has flowed out of the return air device enters the air treatment device through the return air passage, so that air contaminants can be effectively removed and the air contaminants can be avoided or reduced from returning to the target space again. ..
  • the return air passage is preferably a space under an imaginary floor.
  • the return air passage is a space under an imaginary floor, and by providing a specialized ventilation pipe, it is installed rather than guiding the airflow flowing out from the return air device. Helps to simplify, increase the convenience of layout changes, and reduce costs.
  • the return air passage may be a return air pipe under an imaginary floor.
  • the return air fan when the return air device operates independently, the return air fan is operated at a preset rotation speed so as to be connected to the return air port. The distance between them is a preset distance, and the air contaminants located above the return air port are moved toward the return air port.
  • the present invention is a return air device for sucking air contaminants in the target space, and has a return air port and a return air fan, and the return air fan. Is operated at a preset rotation speed, and by sucking air in the target space through the return air port, the distance between the return air port and the return air port is equal to or less than the preset distance. Suppressing the tendency of air contaminants to diffuse upwards, the return air fan provides a return air device having a plurality of stages of the preset rotation speeds corresponding to the plurality of the preset distances.
  • a distance corresponding to the standing height of an adult for example, 1.9 m
  • a distance corresponding to the height of a person's seat / chair surface for example, 0.4 m
  • Distance corresponding to the sitting height of a child for example, 0.7 m
  • distance corresponding to the sitting height of an adult for example, 1.4 m
  • distance corresponding to the position of the nose and mouth when an adult is sitting for example, it can be set to 1 m).
  • the present invention is a control method of the return air device for controlling the above-mentioned return air device, and the distance between the air pollutant and the return air port is directly determined by the sensor.
  • indirect detection is performed, and the preset rotation speed of the return air fan is determined based on the relationship between the maximum distance detected by the sensor and the preset distance, and the return air fan is used in advance.
  • a control method of a return air device for operating at a set rotation speed is provided.
  • a human detection sensor can be used as the sensor, and the distance between the position and the return air opening is determined by detecting the position of the person and the approximate position of the snout of the person. Then, the preset rotation speed of the return air fan is adaptively adjusted.
  • the sensor may be provided in the return air device, or may be provided in the target space, for example, in the ceiling, the side wall, the desk, or the like. Further, the sensor may be a single sensor or a plurality of sensors. By detecting by combining a plurality of sensors, the accuracy of detection can be improved.
  • the return air device includes a return air port and a return air fan, the return air port is provided at the lower part of the target space, and the return air fan is a preset rotation.
  • the return air fan is a preset rotation.
  • a return air device is provided in the target space, and the suction action of the return air device on the air in the target space is used to prevent air contaminants within a preset distance from the return air port of the return air device.
  • a safe area is formed at least within a preset distance from the return air port. Since the region is not a vertical cross section of a single target space but a spatial region having a vertical distance and a horizontal distance, air pollutants within a preset distance from the return air port are not required for air supply and are only returned air. Control can be realized.
  • the preset distance formed by the suction action of the return air device covers a range of 0.4 m to 1.9 m above the ground in the target space, which range is: The breathing range that a person can breathe. By suppressing the spread of air pollutants upwards and promptly sucking them out of the target space, a safe area is formed and the situation of cross-infection is reduced.
  • pollutants are usually controlled by air supply, airflow in the room is realized by using the floor of a perforated board, and pollutants are not controlled by returning air.
  • pollutants can be controlled by using the entire ceiling of the clean room as airflow and setting the airflow that is directly blown downward vertically to the entire room.
  • the return air openings of the return air device can be provided at a plurality of positions, and the return air openings at different positions may be used alone or in combination. Also, for example, one return port of the return device is provided on the obstacle and one return port is provided on the floor.
  • the pollutant control system includes a return air device and an air treatment device, and the installation of the return air device is similar to the situation described above.
  • the air treatment device communicates gas with the return air device, and the air treatment device treats the air from the return air device, for example, directly discharges it to the outside of the room, or purifies it and then returns it to the target space. ..
  • Some contaminants that cannot be treated eg, CO 2
  • the concentration of related pollutants (eg, CO 2 ) in the target space can be kept within an appropriate range for human comfort. You can ensure your condition and avoid chest tightness and headaches.
  • Air purification can adsorb or treat treatable and adsorbable contaminants (eg, some viruses, PM2.5, TVOC, etc.) while at the same time being able to adsorb or treat air to the outside (outdoor or other room). It is possible to reduce exchanges and avoid secondary pollution.
  • treatable and adsorbable contaminants eg, some viruses, PM2.5, TVOC, etc.
  • the contaminant control system includes a return air device and an air supply device, and the installation of the return air device is similar to the above.
  • the air supply device is used to maintain the pressure balance in the room and avoid the occurrence of negative pressure conditions in the room.
  • the air supply volume of the air supply device is made slightly larger than the return air volume of the return air device, so that the target space is in a slightly positive pressure state, and contaminants in other places enter the target space through the gap. You can avoid entering.
  • the air supply device is provided at the upper part (including the top) of the target space and air is supplied into the target space from top to bottom, and the return air device is provided at the lower part (including the bottom) of the target space.
  • the pollutant control system includes a return air device, an air treatment device, and an exhaust device.
  • the three parties can work together to form an internal circulation in the target space.
  • the upper part in the figure corresponds to the actual upper part
  • the lower part in the figure corresponds to the actual lower part
  • Example 1 (return air only)
  • the air contaminant P eg, heat gas exhaled by the infectious disease person PT
  • the target space S for example, a room
  • a return air device 10 used to control diffusion and having a return air port 111 and a return air fan 12 is included, the return air port 111 is provided at the lower part of the target space S, and the return air fan 12 is provided.
  • a region where the distance R between the air return port 111 and the air return port 111 is equal to or less than the preset distance PR by operating at a preset rotation speed PV and sucking air in the target space S through the return air port 111. It suppresses the tendency of the air pollutant P in the inside to diffuse upward of the return air port 111.
  • the above-mentioned “distance R” is calculated from the center point of a single return port 111.
  • the return air device 10 has two return air openings 111 on the left and right, which are rectangular in a plan view, respectively, and the return air port 111 on the left side has the above-mentioned “distance R”.
  • the term “distance R” refers to the distance from the center point (diagonal intersection) of the left return port 111, and for the right return port 111, the above-mentioned “distance R” is the right return port 111. Refers to the distance from the center point (diagonal intersection) of. Considering the normal height and working conditions of a person, for example, a preset distance PR can be set to 1.9 m.
  • the return air return device 10 is provided at the bottom of the target space S.
  • the return air device 10 has a case 11, a return air port 111 is provided on the upper surface of the case 11, a return air fan 12 is provided in the case 11, and the case 11 is provided.
  • the main body is provided below the floor FL (for example, an imaginary floor) at the bottom of the target space S, and the return air port 111 is substantially flush with the floor FL.
  • air exhaust ports 112 are provided on the left and right side surfaces of the case 11, and when the return air fan 12 operates, the air containing the air pollutant P in the target space S is sucked into the case 11 from the return air port 111. At the same time, it is discharged to the space below the floor FL through the exhaust port 112 in the case 11.
  • the return air fan 12 has a plurality of stages of preset rotation speed PVs corresponding to a plurality of preset distance PRs, and the preset distance PRs are preset rotation speed PVs. Is set to increase as the value increases.
  • both the area of the return air port 111 and the preset rotation speed PV can be adjusted.
  • the return air fan 12 when the return air device 10 operates, the return air fan 12 is operated at a preset rotation speed PV, so that the distance R between the return air port 111 and the return air port 111 is a preset distance.
  • the air pollutant P which is PR and is located above the return port 111, is moved toward the return port 111.
  • the contaminant control system may further include a control unit for controlling the operation of each device included in the contaminant control system.
  • the control unit can automatically select a preset rotation speed PV corresponding to a preset distance PR according to an actual situation.
  • a return air device 10 having a return air port 111 and a return air fan 12 is included, and the return air port 111 is provided in the lower part of the target space S and is a return air fan.
  • Reference numeral 12 is operated at a preset rotation speed PV, and by sucking air in the target space S through the return air port 111, the distance R between the return air port 111 and the return air port 111 is equal to or less than the preset distance PR.
  • the return air device 10 is provided in the lower part of the target space S, and the return air device 10 is set to the set rotation speed.
  • the return air fan 12 is operated at a preset rotation speed PV, so that the distance R between the return air fan 12 and the return air port 111 is a preset distance PR.
  • the air pollutant P located above the return air port 111 is moved toward the return air port 111, the air pollutant P in the target space S diffuses upward and spreads throughout the target space S. It becomes even easier to prevent or suppress the resulting effects on the physical and mental health of persons in the path of diffusion of air pollutants in the target space S.
  • Example 2 (return air + exhaust)
  • the structure of the pollutant control system is basically the same as that of the first embodiment, to the outside (outdoor space) of the target space S connected to the air return device 10. It differs in that it further includes an exhaust device 20 for exhausting air.
  • the exhaust device 20 communicates with the exhaust port 112 of the return air device 10 via the return air passage EP1.
  • the exhaust device 20 may be only an exhaust port or an air supply terminal having a fan.
  • the return air passage EP1 is composed of a duct, but may be composed of a space under the floor FL.
  • the air pollutants sucked from the target space S by the return air device 10 are discharged to the outside of the target space S by the exhaust device 20, and thus the target space. Air pollutants in S can be removed efficiently and at low cost.
  • Example 3 (return air + purification)
  • the structure of the pollutant control system is basically the same as that of Example 1, and air purification for purifying air pollutants connected to the air return device 10 is performed. The difference is that the device 30 is further included.
  • the air purification device 30 is provided on the floor FL and communicates with the exhaust port 112 of the return air device 10 via the return air passage EP2.
  • the return air passage EP2 is composed of a duct, but may be composed of a space under the floor FL.
  • the air purification device 30 has a case 31 having an intake port and an exhaust port, a filtration unit is provided in the case, and the intake port of the case 31 is a return air passage. Communicating with EP2, the discharge port of the case 31 opens toward the target space S.
  • the outlet of the case 31 is provided in the upper part of the target space S so as to reduce the turbulence of the air flow in the target space S when the air purification device 30 sends air.
  • the air pollutant sucked from the target space S by the return air device 10 is discharged toward the target space S by the air purification device 30, so that the target space S is used. It is possible to efficiently form the internal circulation of air in the target space S and remove air contaminants in the target space S efficiently and at low cost.
  • Example 4 (return air + air supply)
  • the structure of the pollutant control system is basically the same as that of the first embodiment, and further includes an air supply device 40 for supplying air into the target space S. It's different.
  • the air supply device 40 is provided at the top of the target space S, and directly supplies air from the top of the target space S toward the lower part of the target space.
  • the air supply device 40 has a case 41, an air supply port 411 is provided on the lower surface of the case 41, an air supply fan 42 is provided in the case 41, and the main body of the case 41 is provided. Is provided behind the ceiling CL at the top of the target space S, and the air supply port 411 is substantially flush with the ceiling CL. Further, an intake port 412 is provided on the side surface of the case 41. When the air supply fan 42 operates, the air above the ceiling CL is sucked into the case 41 from the intake port 412 and discharged into the target space S through the air supply port 411 in the case 41.
  • the air supply air speed of the air supply device 40 is set to be equal to or lower than the preset suction air speed of the return air fan 10.
  • the air supply device 40 is an air supply panel with a grill and is provided on the ceiling CL at the top of the target space S to allow airflow to enter the target space S from the space in the ceiling. ..
  • the air supply device 40 is further included, and the air supply device 40 cooperates with the return air device 10 to directly supply air toward the lower side of the target space S. By working, it becomes easier to prevent or suppress cross-infection of personnel in the target space S due to the air pollutants in the target space S spreading upward and spreading in the entire target space. ..
  • the air supply air speed of the air supply device 40 is set to be equal to or lower than the preset suction air speed of the return air fan 10. Therefore, by helping to avoid the generation of eddies, the air pollutants P in the target space S diffuse upward and spread in the entire target space S, which causes cross-infection of personnel in the target space S. It can be effectively prevented or suppressed.
  • the pollutant control system may include the exhaust device according to Example 2 and / or the air purification device according to Example 3, and the air supply device according to Example 4.
  • the air supply device can be connected to the air purification device in order to send the air treated by the air purification device into the target space.
  • FIG. 6B display of FIG. 5G
  • FIG. 7B layout of FIG. 5H
  • the amount of return air required for FIG. 7B is required for FIG. 6B. Since it is smaller than the return air volume, the power consumption is small. Further, since the return air area is substantially the same, if the return air volume is small, the suction air speed is also small, and the noise generated by the return air device is also reduced accordingly.
  • the return air ports are (a) those that increase the number, and (b) multiple return air ports are mutual.
  • the amount of return air required to reach the effect of suppressing the diffusion of air contaminants upward is reduced, and the power consumption is reduced. Becomes smaller.
  • the return air volume required for the two return air openings in FIG. 8 is smaller than the return air volume of one return air port in FIG. 6B.
  • a sensor is further provided, and the distance between the air pollutant in the target space and the return air port is directly or indirectly detected by the sensor, and the maximum distance detected by the sensor is preset.
  • a preset rotation speed of the return air fan can be determined based on the relationship with the distance, and the return air fan can be operated at the preset rotation speed.
  • the sensor may be, for example, a human detection sensor such as an infrared sensor.
  • the return port 111 of the return device 10 exhibits a square or a rectangle, but the return port 111 of the return device 10 is not limited to these, and the return port 111 of the return device 10 has a length other than the square or the rectangle. It may be a rectangular shape, an arc shape, a polygonal line shape, or the like.
  • one or two return ports 111 are provided, but the number is not limited to the same, and more return ports may be provided (for example, a plurality of return ports in one return device 10). Or may be provided with a plurality of return air devices 10 each having a return air port 111).
  • a plurality of return ports 111 are provided, preferably, the plurality of return ports 111 are distributed at different positions in the target space S and are separated from each other. This helps to approach the pollution source and reduce the required return air amount, thereby reducing the power consumption and the operating noise of the return air device 10.
  • the preset rotation speed PV of the return air fan 12 is set or preset so as to increase as the concentration of the air pollutant P increases.
  • the distance PR may be set so as to increase as the preset rotation speed PV increases.
  • the return air device 10 is provided at the bottom of the target space S or the peripheral edge of the obstacle, but the return air device 10 may be provided at the lower part of the target space S. It may be provided (for example, it may be provided below the top plate of the table or cabinet or below the wall of the target space S).
  • the air exhaust ports 112 are provided on the left and right side surfaces of the return air device 10, but the position and number of the air exhaust ports 112 can be appropriately set as needed.
  • an exhaust port may be provided on the bottom surface of the return air device 10, or an exhaust port may be provided on the side surface and the bottom surface of the return air device 10 at the same time.
  • the positional relationship in which the return air return device 10 and the air supply device 40 are provided in the target space S may be as shown in FIGS. 5A to 5D.
  • the return air return device 10 may be provided, or the return air return device 10 may be provided only at the bottom or only at the bottom.
  • the target space S includes the obstacle OB
  • the obstacle OB the return air return device 10 and the air supply device 40 can be provided in various positional relationships, for example, in FIGS. 5E to 5G.
  • the return air device 10 provided at the bottom (ground) of the target space S and the return air device 10 provided at the lower part of the target space S are included at the same time.
  • the return air port 111 is the obstacle OB located in the target space S and the target space. It is provided at one or more positions of the bottom of S and the space between the obstacle OB and the bottom of the target space S.
  • At least one return port 111 is in a projection space (in FIG. 1A, a space below the table top) in which the obstacle OB is projected vertically toward the bottom of the target space S. Or provided in a vertical projection at the bottom of the target space S by the obstacle OB (in FIG. 1A, a vertical projection on the floor FL by the table). Further, preferably, the air supply device 40 is provided outside the vertical projection at the top of the target space S by the obstacle OB in the target space S.
  • both the area of the return air port 111 and the preset rotation speed PV can be adjusted, but the return air device 10 is not limited to this. Only one of the area of the mouth 111 and the preset rotation speed PV may be formed in an adjustable manner.
  • the intake port 412 is provided on the side surface of the air supply device 40, but the position and number of the intake ports 412 can be appropriately provided as needed.
  • an intake port may be provided on the top surface of the air supply device 40, or an intake port may be provided on the top surface and the side surface of the air supply device 40 at the same time.
  • the air supply device 40 is provided at the top of the target space S, and the air supply device 40 directly supplies air toward the lower side of the target space S, but the air supply device 40 is not limited to this.
  • the device 40 may indirectly supply air toward the lower side of the target space S. That is, the air supply direction of the air supply device 40 may be one that supplies air from the side portion and the upper portion of the target space S toward the top of the target space S, or from the side portion of the target space S to the target space S. It may be the one that blows air horizontally toward the upper part.
  • the air supply device 40 is provided on the upper part of the side wall of the target space S.
  • the air supply device 40 may directly introduce fresh air into the target space S from the outside (outdoor) of the target space S, or may provide a duct or the like provided with an air purification device in the middle. By connecting to the return air device 10 via the air return device 10, the air sucked into the return air device 10 and processed by the air purification device may be sent back to the target space S.
  • the air purification device 30 is a floor-standing small purifier provided on the floor FL, but the air purification device 30 is not limited to this, and as shown in FIG. 9, the air purification device 30 has a bottom portion. May be a large-scale upright purifier, for example, which comes into contact with the ground of the target space and the top of the air purifies, for example, behind the ceiling of the target space (such an air purification device 30 may be provided leaning against a wall). However, it may be installed in the back of the wall).

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Abstract

This pollutant control system, return air device (10), and control method therefor are useful for preventing or suppressing the effects from the diffusion of air pollutants (P) in a target space (S) on the mental and physical health of a person present on a path along which the air pollutants in the target space diffuse by quickly drawing in the pollutants by suction. The pollutant control system according to the present invention is used for controlling the diffusion of air pollutants in a target space, and includes a return air device having a return air opening and a return air fan. The return air opening is provided in a lower portion of the target space. The return air fan is operated at a pre-set rotational speed to draw in air in the target space via the return air opening by suction, thus inhibiting the tendency of air pollutants in a region located within a pre-set distance from the return air opening to diffuse upward.

Description

汚染物制御システム、還気装置及びその制御方法Pollutant control system, return air device and its control method
　本発明は、対象空間内の空気汚染物を制御するための汚染物制御システムに関する。本発明は、対象空間内の空気汚染物を吸引するための還気装置にさらに関する。本発明は、還気装置の制御方法にさらに関する。 The present invention relates to a pollutant control system for controlling air pollutants in a target space. The present invention further relates to a return air device for sucking air pollutants in the target space. The present invention further relates to a method for controlling an air return device.
　現在、オフィスビルのオフィスなどでは主に天井での集中換気が採用されており、空調設備、新気設備から吹き出された気流は、オフィスなどの空間内の複数の作業位置を通過して天井に設けられた集中換気口に到達するため、上述した空間内の誰かの呼気に汚染物が含まれていると、交差感染が起こりやすい。 Currently, centralized ventilation mainly on the ceiling is adopted in offices of office buildings, and the airflow blown out from air conditioning equipment and fresh air equipment passes through multiple work positions in the space such as offices and reaches the ceiling. Cross-infection is likely to occur if the exhaled breath of someone in the space described above contains contaminants to reach the central ventilation openings provided.
　本発明は、上述した問題を鑑みなされたもので、汚染物を速やかに吸引することにより、対象空間内の空気汚染物が拡散することに起因する、対象空間内の空気汚染物が拡散する経路にいる人の心身の健康への影響を防止または抑制することに役立つ、汚染物制御システム、還気装置及びその制御方法を提供することを目的とする。 The present invention has been made in view of the above-mentioned problems, and is a route by which air pollutants in the target space are diffused due to the diffusion of air pollutants in the target space by rapidly sucking the pollutants. It is an object of the present invention to provide a pollutant control system, an air return device, and a control method thereof, which help prevent or suppress the influence on the physical and mental health of a person in the area.
　上述した目的を実現するために、本発明は、対象空間内の空気汚染物を制御するための汚染物制御システムであって、還気口と還気ファンとを有する還気装置を含み、前記還気口は、前記対象空間の下部に設けられ、前記還気ファンは、予め設定した回転数で運転し、前記還気口を介して前記対象空間内の空気を吸引することによって、前記還気口との間の距離が予め設定した距離以下となる領域（還気装置の有効吸引領域に相当）内の空気汚染物が上方に向かって拡散する傾向を抑制する汚染物制御システムを提供する。 In order to realize the above-mentioned object, the present invention includes a pollutant control system for controlling air pollutants in a target space, and includes a return air device having a return air port and a return air fan. The return air port is provided at the lower part of the target space, and the return air fan operates at a preset rotation speed and sucks air in the target space through the return air port to return the air return port. Provided is a pollutant control system that suppresses the tendency of air pollutants to diffuse upward in a region (corresponding to an effective suction region of a return air device) in which the distance to the air vent is less than or equal to a preset distance. ..
　ここで、「空気汚染物」は、粉塵粒子、ＣＯ２、有害ガス（例えば、ホルムアルデヒド、ＴＶＯＣ）及びウイルス細菌などでもよく、また、「対象空間の下部」は、対象空間の底部を含み、また、「予め設定した回転数」は、例えば、還気ファンのモータを駆動する回転数に設定されることができ、また、「予め設定した距離」は、対象空間内の特定の汚染物発生源に対応して設定されることができる。 Here, the "air pollutant" may be dust particles, CO 2 , harmful gases (eg, formaldehyde, TVOC), virus bacteria, etc., and the "lower part of the target space" includes the bottom of the target space, and also. , "Preset rotation speed" can be set to, for example, the rotation speed to drive the motor of the return air fan, and "preset distance" is a specific source of contaminants in the target space. Can be set corresponding to.
　本発明に係る汚染物制御システムによれば、還気口と還気ファンとを有する還気装置を含み、還気口は、対象空間の下部に設けられ、還気ファンは、予め設定した回転数で運転し、還気口を介して対象空間内の空気を吸引することによって、還気口との間の距離が予め設定した距離以下となる領域内の空気汚染物が上方に向かって拡散する傾向を抑制するため、対象空間の下部に還気装置を設けるとともに、還気装置を設定された回転数で運転させるだけで、予め設定した距離以下の領域内の空気汚染物の拡散経路を制御することができ、空気汚染物全体を下部に流動させ、空気汚染物を速やかに還気装置に吸引させることで、周囲に拡散させないようにし、それによって、例えば、対象空間内の誰かが汚染物を含む気体を吐き出すときに、上述した汚染物が対象空間内の上方へ拡散して対象空間内全体に広がることに起因する、対象空間内の空気汚染物が拡散する経路にいる人の心身健康への影響を防止または抑制することが容易となる。 According to the contaminant control system according to the present invention, the return air device includes a return air port and a return air fan, the return air port is provided at the lower part of the target space, and the return air fan is a preset rotation. By driving with a number and sucking air in the target space through the return port, air contaminants in the area where the distance to the return port is less than or equal to the preset distance diffuses upward. In order to suppress the tendency to do so, a return air device is installed at the bottom of the target space, and by simply operating the return air device at a set rotation speed, the diffusion path of air pollutants in the region below the preset distance can be established. It can be controlled to allow the entire air contaminant to flow down and promptly suck the air contaminant into the air return device so that it does not spread to the surroundings, thereby contaminating, for example, someone in the target space. The mind and body of a person in the path of diffusion of air contaminants in the target space, which is caused by the above-mentioned contaminants spreading upward in the target space and spreading throughout the target space when exhaling gas containing substances. It becomes easier to prevent or suppress the effects on health.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置は、前記還気口を有する、内部に前記還気ファンが設けられたケースを有する。 Further, in the pollutant control system according to the present invention, preferably, the return air device has a case having the return air port and the return air fan provided inside.
　勿論、還気装置の還気口と還気ファンは、別体でもよく、還気空間を介して接続され、還気空間は、架空床の下の空間でもよいか、または、エアダクトにより限定されてもよい。 Of course, the return air port and the return air fan of the return air device may be separate and connected via the return air space, and the return air space may be a space under a fictitious floor or is limited by an air duct. You may.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記予め設定した回転数は、空気汚染物の濃度が上昇するにつれて大きくなるように設定されるか、または、前記予め設定した距離は、前記予め設定した回転数が大きくなるにつれて増大するように設定される。 Further, in the pollutant control system according to the present invention, preferably, the preset rotation speed is set to increase as the concentration of air pollutants increases, or the preset distance is set. It is set to increase as the preset rotation speed increases.
　本発明に係る汚染物制御システムによれば、空気汚染物と還気装置の還気口との間の距離に基づいて、還気装置の還気ファンの予め設定した回転数を調整し、空気汚染物の位置する特定領域が還気装置の有効吸引領域にカバーされるのを図ることによって、より多くの経路における空気汚染物が何れも還気装置に吸い込まれることを可能にする。 According to the pollutant control system according to the present invention, the preset rotation speed of the return air fan of the return air device is adjusted based on the distance between the air pollutant and the return air port of the return air device, and the air is adjusted. By ensuring that the specific area where the contaminants are located is covered by the effective suction area of the return device, any air contaminants in more paths can be sucked into the return device.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記領域は、前記対象空間内の地面から上へ０．４ｍ～１．９ｍの範囲をカバーするか、または、前記領域は、前記対象空間内の地面から上へ０．７ｍ～１．４ｍの範囲をカバーするか、または、前記領域は、前記対象空間内の地面から上へ０．７ｍ～１ｍの範囲をカバーする。 Further, in the contaminant control system according to the present invention, preferably, the region covers a range of 0.4 m to 1.9 m above the ground in the target space, or the region is the target. The area covers a range of 0.7 m to 1.4 m above the ground in the space, or the area covers a range of 0.7 m to 1 m above the ground in the target space.
　ここで、１．９ｍは、成人の立位高さに対応し、０．４ｍは、人の座席・椅子面の高さに対応し、０．７ｍは、子供の座高に対応し、１．４ｍは、成人の座高に対応し、１ｍは、成人が座っている時の鼻口部の位置する高さに対応する。 Here, 1.9 m corresponds to the standing height of an adult, 0.4 m corresponds to the height of a person's seat / chair surface, and 0.7 m corresponds to the sitting height of a child. 4 m corresponds to the sitting height of an adult, and 1 m corresponds to the height at which the snout is located when the adult is sitting.
　本発明に係る汚染物制御システムによれば、還気装置の有効吸引領域は、対象空間内の地面から上へ０．４ｍ～１．９ｍの範囲をカバーするため、汚染物が対象空間内の上方へ拡散して対象空間内全体に広がることに起因する、対象空間内の人員の交差感染を比較的に確実に防止または抑制することができると同時に、領域のカバー面が大き過ぎて還気ファンの回転数を高くする必要がなくなるので、消費電力を低減することができる。 According to the contaminant control system according to the present invention, the effective suction area of the return air device covers the range of 0.4 m to 1.9 m above the ground in the target space, so that the contaminants are contained in the target space. It is possible to relatively reliably prevent or suppress cross-infection of personnel in the target space due to the spread upward and spread throughout the target space, and at the same time, the covering surface of the area is too large to return air. Since it is not necessary to increase the rotation speed of the fan, the power consumption can be reduced.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置は、複数の前記予め設定した距離に対応する複数の前記予め設定した回転数を有するとともに、実際の状況に応じて前記予め設定した距離に対応する前記予め設定した回転数を手動または自動的に選択することができる。 Further, in the pollutant control system according to the present invention, preferably, the air return device has a plurality of the preset rotation speeds corresponding to the plurality of the preset distances, and is described according to an actual situation. The preset rotation speed corresponding to the preset distance can be manually or automatically selected.
　本発明に係る汚染物制御システムによれば、還気装置は、複数の予め設定した距離に対応する複数の予め設定した回転数を有するとともに、実際の状況に応じて予め設定した距離に対応する予め設定した回転数を手動または自動的に選択することができるため、省エネに役立つとともに、取り付けできる場所の幅がさらに広がる。 According to the pollutant control system according to the present invention, the air return device has a plurality of preset rotation speeds corresponding to a plurality of preset distances, and corresponds to a preset distance according to an actual situation. Since the preset rotation speed can be selected manually or automatically, it helps to save energy and further expands the range of mounting locations.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気口は、前記対象空間内に位置する障害物と、前記対象空間の底部と、前記障害物と前記対象空間の底部との間の空間とのうちの１つ以上の位置に設けられた。 Further, in the contaminant control system according to the present invention, preferably, the return port has an obstacle located in the target space, the bottom of the target space, and the obstacle and the bottom of the target space. It was provided at one or more positions of the space between them.
　ここで、障害物は、例えば、テーブル、棚、キャビネットなどである。還気口が障害物に設けられる場合に、人の鼻口部にさらに近いため、比較的に省エネである。 Here, the obstacles are, for example, tables, shelves, cabinets, and the like. When the return air opening is provided in an obstacle, it is relatively energy-saving because it is closer to the human snout.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、少なくとも１つの前記還気口は、前記障害物を前記対象空間の底部に向かって垂直に投影した投影空間内に設けられるか、または、前記障害物による前記対象空間の底部における垂直投影内に設けられた。 Further, in the contaminant control system according to the present invention, preferably, at least one return port is provided in a projection space in which the obstacle is projected vertically toward the bottom of the target space, or is provided. It was provided in a vertical projection at the bottom of the target space by the obstacle.
　本発明に係る汚染物制御システムによれば、少なくとも１つの還気口は、障害物を対象空間の底部に向かって垂直に投影した投影空間内に設けられるか、または、障害物による対象空間の底部における垂直投影内に設けられたため、対象空間内の人の動きによって還気口が塞がれることを回避することに役立ち、さらに、還気装置の作動騒音を低減することに役立つ。 According to the contaminant control system according to the present invention, at least one return port is provided in a projection space in which an obstacle is projected vertically toward the bottom of the target space, or is provided in the target space due to the obstacle. Since it is provided in the vertical projection at the bottom, it helps to prevent the return air opening from being blocked by the movement of a person in the target space, and further helps to reduce the operating noise of the return air device.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、少なくとも１つの前記還気口は、前記障害物の下方の床に設けられた。 Further, in the pollutant control system according to the present invention, preferably, at least one of the return ports is provided on the floor below the obstacle.
　本発明に係る汚染物制御システムによれば、少なくとも１つの還気口は、障害物の下方の床に設けられたため、人が歩いている領域を避け、人が還気装置につまずいて転倒するリスクを避ける一方、対象空間内の人の動きで還気口が頻繁に塞がれることを避けることにより役立ち、さらに、還気装置の作動騒音を低減することに役立つ。 According to the contaminant control system according to the present invention, at least one return port is provided on the floor below the obstacle, so that the person avoids the area where the person is walking and the person trips over the return air device and falls. While avoiding risks, it helps to prevent the return air opening from being frequently blocked by the movement of people in the target space, and also helps to reduce the operating noise of the return air device.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、少なくとも１つの前記還気口は、前記障害物による前記対象空間の底部における垂直投影の周縁の近傍に設けられた。 Further, in the pollutant control system according to the present invention, preferably, at least one of the return ports is provided in the vicinity of the peripheral edge of the vertical projection at the bottom of the target space by the obstacle.
　本発明に係る汚染物制御システムによれば、少なくとも１つの還気口は、障害物による対象空間の底部における垂直投影の周縁の近傍に設けられたため、還気口が障害物による対象空間の底部における垂直投影の中央の近傍に設けられたことよりも、還気口は、汚染源にさらに近く、必要な還気量を低減することによって、消費電力を低減し、還気装置の作動騒音を低減することに役立つ。 According to the contaminant control system according to the present invention, since at least one return port is provided near the periphery of the vertical projection at the bottom of the target space due to the obstacle, the return port is the bottom of the target space due to the obstacle. The return air port is closer to the pollution source than it is located near the center of the vertical projection in, reducing the amount of return air required to reduce power consumption and reduce the operating noise of the return air device. Helps to do.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気口は、前記障害物による前記対象空間の底部における垂直投影の中央位置に設けられた。 Further, in the pollutant control system according to the present invention, preferably, the return port is provided at the center position of vertical projection at the bottom of the target space by the obstacle.
　本発明に係る汚染物制御システムによれば、還気口は、障害物による対象空間の底部における垂直投影の中央位置に設けられたため、障害物の両側の汚染物を均一に処理することができる。 According to the contaminant control system according to the present invention, the return air port is provided at the center position of the vertical projection at the bottom of the target space due to the obstacle, so that the contaminants on both sides of the obstacle can be treated uniformly. ..
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置は、互いに離間する複数の前記還気口が設けられたケースを含む。 Further, in the pollutant control system according to the present invention, preferably, the air return device includes a case where a plurality of air return ports separated from each other are provided.
　本発明に係る汚染物制御システムによれば、還気装置は、互いに離間する複数の還気口が設けられたケースを含むため、汚染源に近く、必要な還気量を低減することに役立ち、それによって、消費電力を低減し、還気装置の作動騒音を低減することができる。 According to the pollutant control system according to the present invention, the return air device includes a case where a plurality of return air ports are provided so as to be separated from each other, so that the return air device is close to the pollution source and helps to reduce the required return air amount. Thereby, the power consumption can be reduced and the operating noise of the return air device can be reduced.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気口は、長尺形（例えば、長方形）を呈し、且つ、長辺が汚染源の位置する側に対応する。 Further, in the pollutant control system according to the present invention, the return air port preferably has a long shape (for example, a rectangle), and the long side corresponds to the side where the pollution source is located.
　本発明に係る汚染物制御システムによれば、還気口は、長尺形を呈し、且つ、長辺が汚染源の位置する側に対応するため、空気汚染物が還気装置に吸引されることにさらに有利である。 According to the pollutant control system according to the present invention, the air pollutant has a long shape and the long side corresponds to the side where the pollution source is located, so that air pollutants are sucked into the air return device. Is even more advantageous.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置は、前記還気口の面積と前記予め設定した回転数の一方または双方を調節可能に設けられた。 Further, in the pollutant control system according to the present invention, preferably, the air return device is provided so that one or both of the area of the return port and the preset rotation speed can be adjusted.
　本発明に係る汚染物制御システムによれば、還気装置は、還気口の面積と予め設定した回転数の一方または双方を調節可能に設けられたため、対象空間にいる人などの変化などに応じて還気装置を最も省エネに運転させ、消費電力を低減するとともに、還気装置の作動騒音を低減することが容易となる。 According to the contaminant control system according to the present invention, the return air device is provided so that one or both of the area of the return air port and the preset rotation speed can be adjusted, so that the person in the target space or the like can change. Therefore, it becomes easy to operate the return air device with the most energy saving, reduce the power consumption, and reduce the operating noise of the return air device.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置に接続された、前記対象空間の外部へ排風するための排気装置をさらに含む。 Further, in the pollutant control system according to the present invention, an exhaust device for exhausting air to the outside of the target space, which is preferably connected to the return air device, is further included.
　本発明に係る汚染物制御システムによれば、還気装置に接続された、対象空間の外部へ排風するための排気装置をさらに含むため、還気装置に吸引されてきた空気汚染物を室外へ案内し、装置が比較的に簡素化で、簡単な方式で還気装置に吸引されてきた空気汚染物を処理することができる。 According to the pollutant control system according to the present invention, since an exhaust device connected to the return air device for exhausting air to the outside of the target space is further included, air pollutants sucked into the return air device are taken outdoors. The device is relatively simple and can handle air pollutants sucked into the air return device in a simple manner.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置に接続された、空気汚染物を浄化するための空気浄化装置をさらに含む。 Further, the pollutant control system according to the present invention preferably further includes an air purification device for purifying air pollutants connected to the air return device.
　本発明に係る汚染物制御システムによれば、還気装置に接続された、空気汚染物を浄化するための空気浄化装置をさらに含むため、空気汚染物を完全に除去し、還気装置に吸引されてきた空気汚染物による二次汚染を避けることが容易となる。 According to the pollutant control system according to the present invention, since the air purification device for purifying the air pollutant connected to the air return device is further included, the air pollutant is completely removed and sucked into the air return device. It becomes easy to avoid the secondary pollution caused by the air pollutants that have been used.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、送気装置をさらに含み、前記送気装置の送気方向は、前記対象空間の頂部から前記対象空間に向かって送気するものと、前記対象空間の側部且つ上部から前記対象空間の頂部に向かって送気するものと、前記対象空間の側部から前記対象空間の上部に向かって水平に送気するものとのうちの１種以上を含む。 Further, the contaminant control system according to the present invention preferably further includes an air supply device, and the air supply direction of the air supply device is such that air is supplied from the top of the target space toward the target space. One of a type that blows air from the side and upper part of the target space toward the top of the target space and a type that blows air horizontally from the side part of the target space toward the upper part of the target space. Including the above.
　本発明に係る汚染物制御システムによれば、送気装置をさらに含み、該送気装置は、対象空間の下方に向かって直接または間接送気し、場合によって、空気汚染物の位置する空間内に直接作用せず、低い位置で空気汚染物が吹き飛ばされることを避けることができる。また、還気装置と協働することにより、対象空間内の圧力バランスを実現したり、対象空間内を微陽圧に形成させたりすることで、対象空間内の空気汚染物が上方へ拡散して対象空間全体内に広がることに起因する、対象空間内の人員の交差感染を防止または抑制することがさらに容易となる。また、微陽圧の場合に、対象空間外の空気は、対象空間に入ることなく、例えば、外気がドアの隙間や窓の隙間などを通って部屋内に入ることなく、他の汚染物からの影響をさらに避ける。 According to the pollutant control system according to the present invention, an air supply device is further included, and the air supply device directly or indirectly sends air downward to the lower side of the target space, and in some cases, in the space where the air pollutant is located. It does not act directly on the air pollutants and can be prevented from being blown off at a low position. In addition, by cooperating with the return air device, the pressure balance in the target space is realized, and the air pollutants in the target space are diffused upward by forming the target space with a slight positive pressure. It is even easier to prevent or control cross-infection of personnel within the target space due to the spread throughout the target space. Also, in the case of slight positive pressure, the air outside the target space does not enter the target space, for example, the outside air does not enter the room through the gaps in the doors and windows, and from other contaminants. Further avoid the effects of.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記送気装置は、前記対象空間の側壁の上部に設けられ、及び／または、前記送気装置は、前記対象空間内の障害物による前記対象空間の頂部における垂直投影外に設けられた。 Further, in the contaminant control system according to the present invention, preferably, the air supply device is provided on the upper part of the side wall of the target space, and / or the air supply device is due to an obstacle in the target space. It was provided outside the vertical projection at the top of the target space.
　本発明に係る汚染物制御システムによれば、送気装置は、対象空間の側壁の上部に設けられ、及び／または、送気装置は、対象空間内の障害物による対象空間の頂部における垂直投影外に設けられたため、送気装置の送気が対象空間内の障害物に衝突して逆流、渦流及び乱流を形成し、対象空間全体に広がり、対象空間内の人員が交差感染することを避けることができる。従来のクリーンルームなどでは、上下に対応して設けられた排出口と還気口を利用して垂直な空気流を形成することによって、汚染物が周囲に拡散することを避けるものであったが、クリーンルームでは、できるだけ障害物がないように求められ、さもなければ、気流組織に影響を与えてしまうためである。 According to the contaminant control system according to the present invention, the air supply device is provided on the upper part of the side wall of the target space, and / or the air supply device is a vertical projection at the top of the target space by an obstacle in the target space. Since it is installed outside, the air supply of the air supply device collides with obstacles in the target space to form backflow, vortex and turbulence, spreads throughout the target space, and cross-infects personnel in the target space. Can be avoided. In conventional clean rooms, etc., pollutants are prevented from diffusing to the surroundings by forming a vertical air flow using the discharge ports and return air ports provided corresponding to the top and bottom. This is because clean rooms are required to be as free of obstacles as possible, otherwise they will affect the airflow structure.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気ファンが動作時に、前記送気装置の送気風速は、前記予め設定した吸込風速以下に設定された。 Further, in the pollutant control system according to the present invention, preferably, when the return air fan is operating, the air supply air velocity of the air supply device is set to be equal to or lower than the preset suction air velocity.
　本発明に係る汚染物制御システムによれば、還気ファンが動作時に、予め設定した回転数により予め設定した吸込風速を形成し、送気装置の送気風速は、予め設定した吸込風速以下に設定されたため、送気による渦流や逆流を回避または低減することに役立つことによって、対象空間内の空気汚染物が上方へ拡散して対象空間全体内に広がることに起因する、対象空間内の人員の交差感染を効果的に防止または抑制することができる。 According to the pollutant control system according to the present invention, when the return air fan operates, a preset suction air velocity is formed by a preset rotation speed, and the air supply air velocity of the air supply device is set to be equal to or lower than the preset suction air velocity. Personnel in the target space due to the fact that the air contaminants in the target space diffuse upward and spread throughout the target space by helping to avoid or reduce the eddy currents and backflows caused by the insufflation. Can effectively prevent or control cross-infection.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、還気通路と、排気装置と空気浄化装置の少なくとも一方を有する空気処理装置とをさらに含み、前記還気通路は、前記還気装置及び前記空気処理装置に接続され、前記還気装置から流出した気流は、前記還気通路を通して前記空気処理装置に入る。 Further, the pollutant control system according to the present invention preferably further includes a return air passage and an air treatment device having at least one of an exhaust device and an air purification device, and the return air passage is the return air device and the air purification device. The airflow connected to the air treatment device and flowing out of the return air device enters the air treatment device through the return air passage.
　本発明に係る汚染物制御システムによれば、還気通路と、排気装置と空気浄化装置の少なくとも一方を有する空気処理装置とをさらに含み、還気通路は、還気装置及び空気処理装置に接続され、還気装置から流出した気流は、還気通路を通して空気処理装置に入るため、空気汚染物を効果的に除去し、空気汚染物が再び対象空間に戻ることを回避または低減することができる。 According to the pollutant control system according to the present invention, a return air passage and an air treatment device having at least one of an exhaust device and an air purification device are further included, and the return air passage is connected to the return air device and the air treatment device. The airflow that has flowed out of the return air device enters the air treatment device through the return air passage, so that air contaminants can be effectively removed and the air contaminants can be avoided or reduced from returning to the target space again. ..
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気通路は、架空床の下の空間である。 Further, in the pollutant control system according to the present invention, the return air passage is preferably a space under an imaginary floor.
　本発明に係る汚染物制御システムによれば、還気通路は、架空床の下の空間であり、専門の換気管を設けることで、還気装置から流出した気流をガイドする場合よりも、取り付けを簡素化し、レイアウト変更の利便性を高め、コストを削減することに役立つ。 According to the pollutant control system according to the present invention, the return air passage is a space under an imaginary floor, and by providing a specialized ventilation pipe, it is installed rather than guiding the airflow flowing out from the return air device. Helps to simplify, increase the convenience of layout changes, and reduce costs.
　さらに、本発明に係る汚染物制御システムにおいて、前記還気通路は、架空床の下の還気管でもよい。 Further, in the pollutant control system according to the present invention, the return air passage may be a return air pipe under an imaginary floor.
　さらに、本発明に係る汚染物制御システムにおいて、好ましくは、前記還気装置が単独に動作するときに、前記還気ファンは、予め設定した回転数で運転することで、前記還気口との間の距離が予め設定した距離であるとともに前記還気口の上方に位置する空気汚染物を前記還気口に向かって動かす。 Further, in the pollutant control system according to the present invention, preferably, when the return air device operates independently, the return air fan is operated at a preset rotation speed so as to be connected to the return air port. The distance between them is a preset distance, and the air contaminants located above the return air port are moved toward the return air port.
　さらに、上述した目的を実現するために、本発明は、対象空間内の空気汚染物を吸引するための還気装置であって、還気口と還気ファンとを有し、前記還気ファンは、予め設定した回転数で運転し、前記還気口を介して前記対象空間内の空気を吸引することによって、前記還気口との間の距離が予め設定した距離以下となる領域内の空気汚染物が上方に向かって拡散する傾向を抑制し、前記還気ファンは、複数の前記予め設定した距離に対応する複数段の前記予め設定した回転数を有する還気装置を提供する。 Further, in order to realize the above-mentioned object, the present invention is a return air device for sucking air contaminants in the target space, and has a return air port and a return air fan, and the return air fan. Is operated at a preset rotation speed, and by sucking air in the target space through the return air port, the distance between the return air port and the return air port is equal to or less than the preset distance. Suppressing the tendency of air contaminants to diffuse upwards, the return air fan provides a return air device having a plurality of stages of the preset rotation speeds corresponding to the plurality of the preset distances.
　ここで、複数の予め設定した距離として、成人の立位高さに対応する距離（例えば、１．９ｍ）、人の座席・椅子面の高さに対応する距離（例えば、０．４ｍ）、子供の座高に対応する距離（例えば、０．７ｍ）、成人の座高に対応する距離（例えば、１．４ｍ）、成人が座っている時の鼻口部の位置する高さに対応する距離（例えば、１ｍ）に設定されることができる。 Here, as a plurality of preset distances, a distance corresponding to the standing height of an adult (for example, 1.9 m), a distance corresponding to the height of a person's seat / chair surface (for example, 0.4 m), and the like. Distance corresponding to the sitting height of a child (for example, 0.7 m), distance corresponding to the sitting height of an adult (for example, 1.4 m), distance corresponding to the position of the nose and mouth when an adult is sitting (for example) For example, it can be set to 1 m).
　さらに、上述した目的を実現するために、本発明は、上述した還気装置を制御する還気装置の制御方法であって、センサで空気汚染物と前記還気口との間の距離を直接または間接検出し、前記センサにより検出された最大距離と前記予め設定した距離との間の関係に基づいて、前記還気ファンの予め設定した回転数を決定するとともに、前記還気ファンを該予め設定した回転数で運転させる、還気装置の制御方法を提供する。 Further, in order to realize the above-mentioned object, the present invention is a control method of the return air device for controlling the above-mentioned return air device, and the distance between the air pollutant and the return air port is directly determined by the sensor. Alternatively, indirect detection is performed, and the preset rotation speed of the return air fan is determined based on the relationship between the maximum distance detected by the sensor and the preset distance, and the return air fan is used in advance. Provided is a control method of a return air device for operating at a set rotation speed.
　ここで、センサとして、人検出センサを用いることができ、人の位置、さらには人の鼻口部の大体の位置を検出することによって、該位置と還気口との間の距離を決定して、還気ファンの予め設定した回転数を適応的に調節する。また、センサは、還気装置に設けられたり、対象空間内、例えば、天井、側壁、デスク等に設けられたりすることができる。また、センサは、単一センサでもよく、複数のセンサでもよい。複数のセンサを組み合わせて検出することで、検出の精度を高めることができる。 Here, a human detection sensor can be used as the sensor, and the distance between the position and the return air opening is determined by detecting the position of the person and the approximate position of the snout of the person. Then, the preset rotation speed of the return air fan is adaptively adjusted. Further, the sensor may be provided in the return air device, or may be provided in the target space, for example, in the ceiling, the side wall, the desk, or the like. Further, the sensor may be a single sensor or a plurality of sensors. By detecting by combining a plurality of sensors, the accuracy of detection can be improved.
　本発明に係る汚染物制御システムによれば、還気口と還気ファンとを有する還気装置を含み、還気口は、対象空間の下部に設けられ、還気ファンは、予め設定した回転数で運転し、還気口を介して対象空間内の空気を吸引することによって、還気口との間の距離が予め設定した距離以下となる領域内の空気汚染物が上方に向かって拡散する傾向を抑制するため、対象空間の下部に還気装置を設けるとともに、還気装置を設定された回転数で運転させるだけで、予め設定した距離以下の領域内の空気汚染物の拡散経路を制御でき、空気汚染物全体を下部に流動させ、空気汚染物を速やかに還気装置に吸引させることで、周囲に拡散させないようし、それによって、例えば、対象空間内の誰かが汚染物を含む気体を吐き出すときに、上述した汚染物が対象空間内の上方へ拡散して対象空間内全体に広がることに起因する、対象空間内の空気汚染物が拡散する経路にいる人の心身健康への影響を防止または抑制することが容易となる。 According to the contaminant control system according to the present invention, the return air device includes a return air port and a return air fan, the return air port is provided at the lower part of the target space, and the return air fan is a preset rotation. By driving with a number and sucking air in the target space through the return port, air contaminants in the area where the distance to the return port is less than or equal to the preset distance diffuses upward. In order to suppress the tendency to do so, a return air device is installed at the bottom of the target space, and by simply operating the return air device at a set rotation speed, the diffusion path of air pollutants in the region below the preset distance can be established. It can be controlled, allowing the entire air contaminant to flow down and promptly suck the air contaminant into the air return device to prevent it from spreading to the surroundings, thereby, for example, someone in the target space containing the contaminant. For the physical and mental health of people in the path of diffusion of air pollutants in the target space due to the above-mentioned contaminants spreading upward in the target space and spreading throughout the target space when exhaling gas. It becomes easier to prevent or suppress the effects.
本発明の実施例１に係る汚染物制御システムを概略的に示す側面図である。It is a side view which shows schematically the pollutant control system which concerns on Example 1 of this invention. 本発明の実施例１に係る汚染物制御システムを概略的に示す一部側面図である。It is a partial side view schematically showing the pollutant control system which concerns on Example 1 of this invention. 本発明の実施例２に係る汚染物制御システムを概略的に示す側面図である。It is a side view which shows schematically the pollutant control system which concerns on Example 2 of this invention. 本発明の実施例３に係る汚染物制御システムを概略的に示す側面図である。It is a side view which shows schematically the pollutant control system which concerns on Example 3 of this invention. 示本発明の実施例４に係る汚染物制御システムを概略的に示す側面図である。Shown It is a side view schematically showing the contaminant control system which concerns on Example 4 of this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の一例を概略的に示す側面図である。It is a side view schematically showing an example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムにおける還気装置と送気装置の障害物に対する配置形態の他の例を概略的に示す側面図である。It is a side view schematically showing another example of the arrangement form of the return air return device and the air supply device with respect to the obstacle in the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムの実験例を示すシミュレーション図である。It is a simulation figure which shows the experimental example of the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムの実験例を示す別のシミュレーション図である。It is another simulation figure which shows the experimental example of the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムの実験例を示す別のシミュレーション図である。It is another simulation figure which shows the experimental example of the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムの実験例を示す別のシミュレーション図である。It is another simulation figure which shows the experimental example of the pollutant control system which concerns on this invention. 本発明に係る汚染物制御システムの実験例を示す別のシミュレーション図である。It is another simulation figure which shows the experimental example of the pollutant control system which concerns on this invention. 本発明の変形例に係る汚染物制御システムを概略的に示す側面図である。It is a side view which shows typically the pollutant control system which concerns on the modification of this invention.
　本発明の一実施形態において、対象空間に還気装置を設け、還気装置による対象空間における空気に対する吸引作用を利用し、還気装置の還気口から予め設定した距離内の空気汚染物が上へ拡散することを抑制するとともに、空気汚染物を対象空間から離れるように吸引することによって、少なくとも還気口から予め設定した距離内に安全領域を形成する。該領域は、単独の対象空間の縦断面ではなく、上下距離、左右距離を有する空間領域なので、送気を必要とせず、還気のみで還気口から予め設定した距離内の空気汚染物の制御を実現することができる。１つの具体的な実施例において、還気装置の吸引作用により形成された予め設定した距離は、対象空間内の地面から上へ０．４ｍ～１．９ｍの範囲をカバーし、該範囲は、人が可能な呼吸範囲である。空気汚染物が上へ拡散することを抑制し、対象空間から速やかに吸い出すことで、安全区域を形成し、交差感染の状況を低減する。 In one embodiment of the present invention, a return air device is provided in the target space, and the suction action of the return air device on the air in the target space is used to prevent air contaminants within a preset distance from the return air port of the return air device. By suppressing the diffusion upward and sucking the air contaminants away from the target space, a safe area is formed at least within a preset distance from the return air port. Since the region is not a vertical cross section of a single target space but a spatial region having a vertical distance and a horizontal distance, air pollutants within a preset distance from the return air port are not required for air supply and are only returned air. Control can be realized. In one specific embodiment, the preset distance formed by the suction action of the return air device covers a range of 0.4 m to 1.9 m above the ground in the target space, which range is: The breathing range that a person can breathe. By suppressing the spread of air pollutants upwards and promptly sucking them out of the target space, a safe area is formed and the situation of cross-infection is reduced.
　一般のクリーンルームでは、通常、送気によって汚染物の制御を実現し、穴あき板の床を利用して室内の気流の流出を実現し、還気で汚染物の制御を実現するものではない。また、クリーンルームの天井を全て送気に用い、部屋全体に垂直に下向きに直接吹き出された気流を設定することで汚染物の制御を実現する。 In a general clean room, pollutants are usually controlled by air supply, airflow in the room is realized by using the floor of a perforated board, and pollutants are not controlled by returning air. In addition, pollutants can be controlled by using the entire ceiling of the clean room as airflow and setting the airflow that is directly blown downward vertically to the entire room.
　１つの具体的な実施例において、還気装置の還気口は、複数の位置に設けられることができ、異なる位置の還気口は、単独で用いられてもよいし、組み合わせて用いられてもよく、例えば、還気装置の１つの還気口は、障害物に設けられ、１つの還気口は、床に設けられる。 In one specific embodiment, the return air openings of the return air device can be provided at a plurality of positions, and the return air openings at different positions may be used alone or in combination. Also, for example, one return port of the return device is provided on the obstacle and one return port is provided on the floor.
　本発明の他の実施形態において、汚染物制御システムは、還気装置と空気処理装置とを含み、還気装置の設置は、上記した状況と類似する。空気処理装置は、還気装置とガス連通し、空気処理装置は、還気装置からの空気を処理し、例えば、室外に直接排出したり、浄化処理してから再び対象空間内に戻したりする。処理できない一部の汚染物（例えば、ＣＯ２など）は排気によって排除でき、対象空間内の関連汚染物（例えば、ＣＯ２など）の濃度を適切な範囲内にすることで、人の快適な状態を確保し、胸の圧迫感や頭痛を避けることができる。空気清浄により、処理可能で、吸着可能な汚染物（例えば、一部のウイルス、ＰＭ２．５、ＴＶＯＣなど）を吸着または処理することができると同時に、外部（室外または他の部屋）との空気交流を低減し、二次汚染を避けることができる。 In another embodiment of the invention, the pollutant control system includes a return air device and an air treatment device, and the installation of the return air device is similar to the situation described above. The air treatment device communicates gas with the return air device, and the air treatment device treats the air from the return air device, for example, directly discharges it to the outside of the room, or purifies it and then returns it to the target space. .. Some contaminants that cannot be treated (eg, CO 2 ) can be eliminated by exhaust, and the concentration of related pollutants (eg, CO 2 ) in the target space can be kept within an appropriate range for human comfort. You can ensure your condition and avoid chest tightness and headaches. Air purification can adsorb or treat treatable and adsorbable contaminants (eg, some viruses, PM2.5, TVOC, etc.) while at the same time being able to adsorb or treat air to the outside (outdoor or other room). It is possible to reduce exchanges and avoid secondary pollution.
　本発明のさらなる具体的な実施形態において、汚染物制御システムは、還気装置と送気装置とを含み、還気装置の設置は、上記と類似する。送気装置は、室内の圧力バランスを保ち、室内の負圧の状況が生じることを避けるために用いられる。一実施例において、送気装置の送気風量は、還気装置の還気風量よりも少し大きくすることで、対象空間を微陽圧状態にして、他の場所の汚染物が隙間から対象空間に入ることを避けることができる。一実施例において、送気装置は、対象空間の上部（頂部を含む）に設けられ、上から下へ対象空間内に送気し、還気装置は、対象空間の下部（底部を含む）に設けられ、対象空間内の空気を下向きに還気装置へ吸引することにより、対象空間に略上から下への気流組織を形成し、汚染物が上向きに拡散することをさらに抑制する。 In a more specific embodiment of the present invention, the contaminant control system includes a return air device and an air supply device, and the installation of the return air device is similar to the above. The air supply device is used to maintain the pressure balance in the room and avoid the occurrence of negative pressure conditions in the room. In one embodiment, the air supply volume of the air supply device is made slightly larger than the return air volume of the return air device, so that the target space is in a slightly positive pressure state, and contaminants in other places enter the target space through the gap. You can avoid entering. In one embodiment, the air supply device is provided at the upper part (including the top) of the target space and air is supplied into the target space from top to bottom, and the return air device is provided at the lower part (including the bottom) of the target space. By being provided and sucking the air in the target space downward to the return air device, an air flow structure from substantially above to below is formed in the target space, and the diffusion of contaminants upward is further suppressed.
　本発明のさらなる実施態様において、汚染物制御システムは、還気装置と、空気処理装置と、排風装置とを含む。三者を連携して対象空間の内循環を形成することができる。 In a further embodiment of the present invention, the pollutant control system includes a return air device, an air treatment device, and an exhaust device. The three parties can work together to form an internal circulation in the target space.
　以下、本発明の実施例に係る汚染物制御システムについて図面を参照して説明。 Hereinafter, the contaminant control system according to the embodiment of the present invention will be described with reference to the drawings.
　ここで、図中の上方は、実際の上方に対応し、図中の下方は、実際の下方に対応する。 Here, the upper part in the figure corresponds to the actual upper part, and the lower part in the figure corresponds to the actual lower part.
　（１）実施例１（還気のみ）
　実施例１において、図１Ａと図１Ｂに示すように、汚染物制御システムは、対象空間Ｓ（例えば、部屋）内の空気汚染物Ｐ（例えば、伝染病者ＰＴにより吐き出された熱ガス）が拡散することを制御するために用いられ、還気口１１１と還気ファン１２とを有する還気装置１０を含み、還気口１１１は、対象空間Ｓの下部に設けられ、還気ファン１２は、予め設定した回転数ＰＶで運転し、還気口１１１を介して対象空間Ｓ内の空気を吸引することによって、還気口１１１との間の距離Ｒが予め設定した距離ＰＲ以下となる領域内の空気汚染物Ｐが還気口１１１の上方に向かって拡散する傾向を抑制する。 (1) Example 1 (return air only)
In Example 1, as shown in FIGS. 1A and 1B, in the contaminant control system, the air contaminant P (eg, heat gas exhaled by the infectious disease person PT) in the target space S (for example, a room) is used. A return air device 10 used to control diffusion and having a return air port 111 and a return air fan 12 is included, the return air port 111 is provided at the lower part of the target space S, and the return air fan 12 is provided. , A region where the distance R between the air return port 111 and the air return port 111 is equal to or less than the preset distance PR by operating at a preset rotation speed PV and sucking air in the target space S through the return air port 111. It suppresses the tendency of the air pollutant P in the inside to diffuse upward of the return air port 111.
　ちなみに、上述した「距離Ｒ」は、単一の還気口１１１の中心点から計算する。例えば、図１Ａと図１Ｂに示す例において、還気装置１０は、平面視でそれぞれ長方形である左右２つの還気口１１１を有し、左側の還気口１１１については、上述した「距離Ｒ」とは、該左側の還気口１１１の中心点（対角線の交点）からの距離を指し、右側の還気口１１１については、上述した「距離Ｒ」とは、該右側の還気口１１１の中心点（対角線の交点）からの距離を指す。人の通常の身長や勤務状態などを考慮し、例えば、予め設定した距離ＰＲを１．９ｍに設定することができる。 By the way, the above-mentioned "distance R" is calculated from the center point of a single return port 111. For example, in the examples shown in FIGS. 1A and 1B, the return air device 10 has two return air openings 111 on the left and right, which are rectangular in a plan view, respectively, and the return air port 111 on the left side has the above-mentioned “distance R”. The term "distance R" refers to the distance from the center point (diagonal intersection) of the left return port 111, and for the right return port 111, the above-mentioned "distance R" is the right return port 111. Refers to the distance from the center point (diagonal intersection) of. Considering the normal height and working conditions of a person, for example, a preset distance PR can be set to 1.9 m.
　ここで、図１Ａと図１Ｂに示すように、還気装置１０は、対象空間Ｓの底部に設けられた。具体的には、還気装置１０は、ケース１１を有し、ケース１１の上面には、還気口１１１が設けられ、ケース１１内には、還気ファン１２が設けられるとともに、ケース１１の本体は、対象空間Ｓの底部の床ＦＬ（例えば、架空床）の下方に設けられ、還気口１１１が床ＦＬと略面一となる。また、ケース１１の左右の側面に排風口１１２が設けられ、還気ファン１２が動作するときに、対象空間Ｓ内の空気汚染物Ｐを含む空気は、還気口１１１からケース１１に吸い込まれるとともに、ケース１１における排風口１１２を介して床ＦＬの下方の空間に排出される。 Here, as shown in FIGS. 1A and 1B, the return air return device 10 is provided at the bottom of the target space S. Specifically, the return air device 10 has a case 11, a return air port 111 is provided on the upper surface of the case 11, a return air fan 12 is provided in the case 11, and the case 11 is provided. The main body is provided below the floor FL (for example, an imaginary floor) at the bottom of the target space S, and the return air port 111 is substantially flush with the floor FL. Further, air exhaust ports 112 are provided on the left and right side surfaces of the case 11, and when the return air fan 12 operates, the air containing the air pollutant P in the target space S is sucked into the case 11 from the return air port 111. At the same time, it is discharged to the space below the floor FL through the exhaust port 112 in the case 11.
　さらに、還気装置１０において、還気ファン１２は、複数の予め設定した距離ＰＲに対応する複数段の予め設定した回転数ＰＶを有するとともに、予め設定した距離ＰＲは、予め設定した回転数ＰＶが大きくなるにつれて増大するように設定される。 Further, in the return air device 10, the return air fan 12 has a plurality of stages of preset rotation speed PVs corresponding to a plurality of preset distance PRs, and the preset distance PRs are preset rotation speed PVs. Is set to increase as the value increases.
　さらに、還気装置１０において、還気口１１１の面積と予め設定した回転数ＰＶの双方を調節することができる。 Further, in the return air device 10, both the area of the return air port 111 and the preset rotation speed PV can be adjusted.
　さらに、本実施形態において、還気装置１０が動作するときに、還気ファン１２は、予め設定した回転数ＰＶで運転することで、還気口１１１との間の距離Ｒが予め設定した距離ＰＲであるとともに還気口１１１の上方に位置する空気汚染物Ｐを還気口１１１に向かって動かす。 Further, in the present embodiment, when the return air device 10 operates, the return air fan 12 is operated at a preset rotation speed PV, so that the distance R between the return air port 111 and the return air port 111 is a preset distance. The air pollutant P, which is PR and is located above the return port 111, is moved toward the return port 111.
　さらに、図示していないが，汚染物制御システムは、汚染物制御システムに含まれる各装置の運転を制御するための制御部をさらに含んでもよい。例えば、制御部は、実際の状況に応じて予め設定した距離ＰＲに対応する予め設定した回転数ＰＶを自動的に選択することができる。 Further, although not shown, the contaminant control system may further include a control unit for controlling the operation of each device included in the contaminant control system. For example, the control unit can automatically select a preset rotation speed PV corresponding to a preset distance PR according to an actual situation.
　本実施形態に係る汚染物制御システムによれば、還気口１１１と還気ファン１２とを有する還気装置１０を含み、還気口１１１は、対象空間Ｓの下部に設けられ、還気ファン１２は、予め設定した回転数ＰＶで運転し、還気口１１１を介して対象空間Ｓ内の空気を吸引することによって、還気口１１１との間の距離Ｒが予め設定した距離ＰＲ以下となる領域内の空気汚染物Ｐが還気口１１１の上方に向かって拡散する傾向を抑制するため、対象空間Ｓの下部に還気装置１０を設けるとともに、還気装置１０を設定された回転数で運転させるだけで、予め設定した距離ＰＲ以下の領域内の空気汚染物Ｐの拡散経路を制御することができ、空気汚染物Ｐ全体を下部に流動させるとともに、還気装置１０に速やかに吸引されることによって、周囲に拡散させないようにすることで、例えば、対象空間Ｓ内の誰かが空気汚染物Ｐを含む気体を吐き出すときに、空気汚染物Ｐが対象空間Ｓ内の上方へ拡散して対象空間Ｓ内全体に広がることに起因する、対象空間Ｓ内の空気汚染物が拡散する経路にいる人の心身健康への影響を防止または抑制することが容易となる。 According to the contaminant control system according to the present embodiment, a return air device 10 having a return air port 111 and a return air fan 12 is included, and the return air port 111 is provided in the lower part of the target space S and is a return air fan. Reference numeral 12 is operated at a preset rotation speed PV, and by sucking air in the target space S through the return air port 111, the distance R between the return air port 111 and the return air port 111 is equal to or less than the preset distance PR. In order to suppress the tendency of the air contaminant P in the region to diffuse toward the upper side of the return air port 111, the return air device 10 is provided in the lower part of the target space S, and the return air device 10 is set to the set rotation speed. It is possible to control the diffusion path of the air pollutant P in the region below the preset distance PR simply by operating with the air pollutant P, and the entire air pollutant P is allowed to flow downward and is quickly sucked into the return air device 10. By preventing it from diffusing to the surroundings, for example, when someone in the target space S exhales a gas containing the air pollutant P, the air pollutant P diffuses upward in the target space S. It becomes easy to prevent or suppress the influence on the physical and mental health of the person in the route where the air pollutants in the target space S are diffused due to the spread over the entire target space S.
　さらに、本実施形態に係る汚染物制御システムによれば、還気ファン１２は、予め設定した回転数ＰＶで運転することで、還気口１１１との間の距離Ｒが予め設定した距離ＰＲであるとともに還気口１１１の上方に位置する空気汚染物Ｐを還気口１１１に向かって動かすため、対象空間Ｓ内の空気汚染物Ｐが上方へ拡散して対象空間Ｓ内全体に広がることに起因する、対象空間Ｓ内の空気汚染物が拡散する経路にいる人の心身健康への影響を防止または抑制することがさらに容易となる。 Further, according to the pollutant control system according to the present embodiment, the return air fan 12 is operated at a preset rotation speed PV, so that the distance R between the return air fan 12 and the return air port 111 is a preset distance PR. At the same time, since the air pollutant P located above the return air port 111 is moved toward the return air port 111, the air pollutant P in the target space S diffuses upward and spreads throughout the target space S. It becomes even easier to prevent or suppress the resulting effects on the physical and mental health of persons in the path of diffusion of air pollutants in the target space S.
　（２）実施例２（還気＋排気）
　実施例２において、図２に示すように、汚染物制御システムの構造は、実施例１と基本的に同じであり、還気装置１０に接続された、対象空間Ｓの外部（室外空間）へ排風するための排気装置２０をさらに含む点に相違している。 (2) Example 2 (return air + exhaust)
In the second embodiment, as shown in FIG. 2, the structure of the pollutant control system is basically the same as that of the first embodiment, to the outside (outdoor space) of the target space S connected to the air return device 10. It differs in that it further includes an exhaust device 20 for exhausting air.
　ここで、図２に示すように、排気装置２０は、還気通路ＥＰ１を介して還気装置１０の排風口１１２と連通している。 Here, as shown in FIG. 2, the exhaust device 20 communicates with the exhaust port 112 of the return air device 10 via the return air passage EP1.
　さらに、排気装置２０は、排気口だけでもよく、ファンを有する送気終端でもよい。 Further, the exhaust device 20 may be only an exhaust port or an air supply terminal having a fan.
　さらに、図２に示すように、還気通路ＥＰ１は、ダクトから構成されるが、床ＦＬの下の空間から構成されてもよい。 Further, as shown in FIG. 2, the return air passage EP1 is composed of a duct, but may be composed of a space under the floor FL.
　本実施形態に係る汚染物制御システムによれば、実施例１に係る汚染物制御システムと基本的に同じ技術効果を奏することができる。 According to the pollutant control system according to the present embodiment, basically the same technical effect as that of the pollutant control system according to the first embodiment can be obtained.
　さらに、本実施形態に係る汚染物制御システムによれば、還気装置１０により対象空間Ｓから吸い込まれた空気汚染物は、排気装置２０により対象空間Ｓの外部に向かって排出されたため、対象空間Ｓ内の空気汚染物を効率的かつ低コストに除去することができる。 Further, according to the pollutant control system according to the present embodiment, the air pollutants sucked from the target space S by the return air device 10 are discharged to the outside of the target space S by the exhaust device 20, and thus the target space. Air pollutants in S can be removed efficiently and at low cost.
　（３）実施例３（還気＋浄化）
　実施例３において、図３に示すように、汚染物制御システムの構造は、実施例１と基本的に同じであり、還気装置１０に接続された、空気汚染物を浄化するための空気浄化装置３０をさらに含む点に相違している。 (3) Example 3 (return air + purification)
In Example 3, as shown in FIG. 3, the structure of the pollutant control system is basically the same as that of Example 1, and air purification for purifying air pollutants connected to the air return device 10 is performed. The difference is that the device 30 is further included.
　ここで、図３に示すように、空気浄化装置３０は、床ＦＬに設けられるとともに、還気通路ＥＰ２を介して還気装置１０の排風口１１２と連通している。 Here, as shown in FIG. 3, the air purification device 30 is provided on the floor FL and communicates with the exhaust port 112 of the return air device 10 via the return air passage EP2.
　さらに、図３に示すように、還気通路ＥＰ２は、ダクトから構成されるが、床ＦＬの下の空間から構成されてもよい。 Further, as shown in FIG. 3, the return air passage EP2 is composed of a duct, but may be composed of a space under the floor FL.
　さらに、図３に示すように、空気浄化装置３０は、吸入口と排出口とを有するケース３１を有し、ケース内には、濾過部件が設けられ、ケース３１の吸入口は、還気通路ＥＰ２と連通し、ケース３１の排出口は、対象空間Ｓに向かって開口する。一実施例において、空気浄化装置３０が送気するときに対象空間Ｓにおける気流の乱流を低減するように、ケース３１の排出口は、対象空間Ｓの上部に設けられた。 Further, as shown in FIG. 3, the air purification device 30 has a case 31 having an intake port and an exhaust port, a filtration unit is provided in the case, and the intake port of the case 31 is a return air passage. Communicating with EP2, the discharge port of the case 31 opens toward the target space S. In one embodiment, the outlet of the case 31 is provided in the upper part of the target space S so as to reduce the turbulence of the air flow in the target space S when the air purification device 30 sends air.
　本実施形態に係る汚染物制御システムによれば、実施例１に係る汚染物制御システムと基本的に同じ技術効果を奏することができる。 According to the pollutant control system according to the present embodiment, basically the same technical effect as that of the pollutant control system according to the first embodiment can be obtained.
　さらに、本実施形態に係る汚染物制御システムによれば、還気装置１０により対象空間Ｓから吸い込まれた空気汚染物は、空気浄化装置３０により対象空間Ｓに向かって排出されたため、対象空間Ｓでの空気の内循環を効率的に形成し、対象空間Ｓ内の空気汚染物を効率的かつ低コストに除去することができる。 Further, according to the pollutant control system according to the present embodiment, the air pollutant sucked from the target space S by the return air device 10 is discharged toward the target space S by the air purification device 30, so that the target space S is used. It is possible to efficiently form the internal circulation of air in the target space S and remove air contaminants in the target space S efficiently and at low cost.
　（４）実施例４（還気＋送気）
　実施例４において、図４に示すように、汚染物制御システムの構造は、実施例１と基本的に同じであり、対象空間Ｓ内に向かって送気する送気装置４０をさらに含む点に相違している。 (4) Example 4 (return air + air supply)
In the fourth embodiment, as shown in FIG. 4, the structure of the pollutant control system is basically the same as that of the first embodiment, and further includes an air supply device 40 for supplying air into the target space S. It's different.
　ここで、図４に示すように、送気装置４０は、対象空間Ｓの頂部に設けられ、対象空間Ｓの頂部から対象空間の下方に向かって直接送気する。具体的には、送気装置４０は、ケース４１を有し、ケース４１の下面には、送気口４１１が設けられ、ケース４１内には、送気ファン４２が設けられ、ケース４１の本体は、対象空間Ｓの頂部の天井ＣＬの裏側に設けられ、送気口４１１は、天井ＣＬと略面一となる。また、ケース４１の側面には、吸気口４１２が設けられた。送気ファン４２が動作するときに、天井ＣＬの上方の空気は、吸気口４１２からケース４１に吸い込こまれるとともに、ケース４１における送気口４１１を介して対象空間Ｓ内に排出された。 Here, as shown in FIG. 4, the air supply device 40 is provided at the top of the target space S, and directly supplies air from the top of the target space S toward the lower part of the target space. Specifically, the air supply device 40 has a case 41, an air supply port 411 is provided on the lower surface of the case 41, an air supply fan 42 is provided in the case 41, and the main body of the case 41 is provided. Is provided behind the ceiling CL at the top of the target space S, and the air supply port 411 is substantially flush with the ceiling CL. Further, an intake port 412 is provided on the side surface of the case 41. When the air supply fan 42 operates, the air above the ceiling CL is sucked into the case 41 from the intake port 412 and discharged into the target space S through the air supply port 411 in the case 41.
　さらに、還気ファン１０が動作するときに、送気装置４０の送気風速は、還気ファン１０の予め設定した吸込風速以下に設定される。 Further, when the return air fan 10 operates, the air supply air speed of the air supply device 40 is set to be equal to or lower than the preset suction air speed of the return air fan 10.
　他の実施例において、送気装置４０は、グリル付きの送気パネルであり、対象空間Ｓの頂部の天井ＣＬに設けられ、気流が天井内の空間から対象空間Ｓに入ることを可能にする。 In another embodiment, the air supply device 40 is an air supply panel with a grill and is provided on the ceiling CL at the top of the target space S to allow airflow to enter the target space S from the space in the ceiling. ..
　本実施形態に係る汚染物制御システムによれば、実施例１に係る汚染物制御システムと基本的に同じ技術効果を奏することができる。 According to the pollutant control system according to the present embodiment, basically the same technical effect as that of the pollutant control system according to the first embodiment can be obtained.
　さらに、本実施形態に係る汚染物制御システムによれば、送気装置４０をさらに含み、該送気装置４０は、対象空間Ｓの下方に向かって直接送気するため、還気装置１０と協働することで、対象空間Ｓ内の空気汚染物が上方へ拡散して対象空間全体内に広がることに起因する、対象空間Ｓ内の人員の交差感染を防止または抑制することがさらに容易となる。 Further, according to the pollutant control system according to the present embodiment, the air supply device 40 is further included, and the air supply device 40 cooperates with the return air device 10 to directly supply air toward the lower side of the target space S. By working, it becomes easier to prevent or suppress cross-infection of personnel in the target space S due to the air pollutants in the target space S spreading upward and spreading in the entire target space. ..
　さらに、本実施形態に係る汚染物制御システムによれば、還気ファン１０が動作するときに、送気装置４０の送気風速は、還気ファン１０の予め設定した吸込風速以下に設定されるため、渦流の発生を避けることに役立つことによって、対象空間Ｓ内の空気汚染物Ｐが上方へ拡散して対象空間Ｓ全体内に広がることに起因する、対象空間Ｓ内の人員の交差感染を効果的に防止または抑制することができる。 Further, according to the pollutant control system according to the present embodiment, when the return air fan 10 operates, the air supply air speed of the air supply device 40 is set to be equal to or lower than the preset suction air speed of the return air fan 10. Therefore, by helping to avoid the generation of eddies, the air pollutants P in the target space S diffuse upward and spread in the entire target space S, which causes cross-infection of personnel in the target space S. It can be effectively prevented or suppressed.
　他の実施例において、汚染物制御システムは、実施例２に記載の排気装置及び／または実施例３に記載の空気浄化装置、及び実施例４に記載の送気装置を含んでもよい。送気装置は、空気浄化装置により処理された空気を対象空間に送り込むために、空気浄化装置に接続されることができる。 In another embodiment, the pollutant control system may include the exhaust device according to Example 2 and / or the air purification device according to Example 3, and the air supply device according to Example 4. The air supply device can be connected to the air purification device in order to send the air treated by the air purification device into the target space.
　以下、本発明に係る汚染物制御システムの技術効果をさらに明確にするために、具体的な実験例を説明する。 Hereinafter, a specific experimental example will be described in order to further clarify the technical effect of the pollutant control system according to the present invention.
　１）還気装置の予め設定した回転数による、汚染物制御システムの空気汚染物が上へ拡散することを防止または抑制する効果への影響
　還気装置は、適切な予め設定した吸込風速を有すると、汚染物が上へ拡散することを抑制する効果に達することができる。また、対象空間内の空気汚染物の濃度が上昇すると、それに応じて予め設定した還気装置の吸込風速を速くすることで、汚染物が上へ拡散することを抑制することができる。 1) Effect of the preset rotation speed of the return air device on the effect of preventing or suppressing the diffusion of air pollutants in the pollutant control system. The return air device has an appropriate preset suction wind speed. Then, the effect of suppressing the diffusion of contaminants upward can be reached. Further, when the concentration of air pollutants in the target space increases, the suction air velocity of the return air device set in advance is increased accordingly, so that the pollutants can be suppressed from diffusing upward.
　例えば、図５Ｇに示すレイアウトで、図６Ａと図６Ｂに示すように、還気装置１０の吸込風速を速くすることで（図６Ｂにおける吸込風速は、図６Ａにおける吸込風速よりも大きい）、汚染物が上へ拡散することを抑制する効果が向上しつつある。 For example, in the layout shown in FIG. 5G, as shown in FIGS. 6A and 6B, by increasing the suction wind speed of the return air device 10 (the suction wind speed in FIG. 6B is larger than the suction wind speed in FIG. 6A), contamination The effect of suppressing the diffusion of objects upwards is improving.
　さらに、図５Ｈに示すレイアウトで、図７Ａと図７Ｂに示すように、還気装置の吸込風速を速くすることで（図７Ｂにおける吸込風速は、図７Ａにおける吸込風速よりも大きい）、空気汚染物が上へ拡散することを抑制する効果が向上しつつある。 Further, in the layout shown in FIG. 5H, as shown in FIGS. 7A and 7B, by increasing the suction wind speed of the return air device (the suction wind speed in FIG. 7B is larger than the suction wind speed in FIG. 7A), air pollution. The effect of suppressing the diffusion of objects upwards is improving.
　言い換えれば、予め設定した吸込風速が大きくなると、カバー可能な領域がより広くなるため、制御効果がよりよくなる。 In other words, the larger the preset suction wind speed, the wider the area that can be covered, and the better the control effect.
　２）送気装置の送気速度による、空気汚染物が上へ拡散することを防止または抑制する汚染物制御システムの効果への影響
　送気装置の予め設定した吹送気速は、還気装置の予め設定した吸込風速よりも大きくなってはならず、且つ、予め設定した吹出風速を大きくし過ぎてはならず、さもなければ、汚染物は、上へ拡散するおそれがある。 2) Effect of the air supply speed of the air supply device on the effect of the pollutant control system that prevents or suppresses the diffusion of air pollutants upward. The suction wind speed must not be higher than the preset suction wind speed, and the blowout wind speed must not be too high, otherwise the contaminants may diffuse upwards.
　実験シミュレーションによると、吹出風速が小さい場合に、例えば、吹出風速が０．６ｍ／ｓ以下の場合に（例えば、０．５ｍ／ｓや０．３ｍ／ｓ）、空気汚染物が上へ拡散しない、または、上へ拡散する傾向が顕著に抑制される。 According to the experimental simulation, when the wind speed is small, for example, when the wind speed is 0.6 m / s or less (for example, 0.5 m / s or 0.3 m / s), air pollutants do not diffuse upward. , Or the tendency to diffuse upwards is significantly suppressed.
　３）還気装置／還気口の位置による、消費電力／騒音への影響
　還気装置／還気口が汚染源に近ければ、汚染物が上へ拡散することを抑制する効果に達するために必要な還気風量が小さくなり、消費電力が小くなる。 3) Effect of return device / return port position on power consumption / noise If the return device / return port is close to the pollution source, it is necessary to reach the effect of suppressing the diffusion of contaminants upward. The amount of return air becomes smaller, and the power consumption becomes smaller.
　例えば、図６Ｂ（図５Ｇのレイアウト）と図７Ｂ（図５Ｈのレイアウト）に示すように、還気口の面積が略同じの場合に、図７Ｂに必要な還気量は、図６Ｂに必要な還気風量よりも小さいため、消費電力が小さい。また、還気面積が略同じなので、還気風量が小ければ、吸込風速も小さくなり、還気装置が発生する騒音もそれに伴って低くなる。 For example, as shown in FIG. 6B (layout of FIG. 5G) and FIG. 7B (layout of FIG. 5H), when the area of the return air port is substantially the same, the amount of return air required for FIG. 7B is required for FIG. 6B. Since it is smaller than the return air volume, the power consumption is small. Further, since the return air area is substantially the same, if the return air volume is small, the suction air speed is also small, and the noise generated by the return air device is also reduced accordingly.
　４）還気口の数、レイアウト、形状による、消費電力への影響
　還気面積が同じの場合に、還気口は、（ａ）数を増やすもの、（ｂ）複数の還気口が互いに離間するもの、（ｃ）長さが幅よりも大きいものの１つ以上を満たすと、空気汚染物が上へ拡散することを抑制する効果に達するために必要な還気風量が小さくなり、消費電力が小さくなる。 4) Effect of the number, layout, and shape of the return air ports on power consumption When the return air ports are the same, the return air ports are (a) those that increase the number, and (b) multiple return air ports are mutual. When one or more of those separated and (c) longer than the width are satisfied, the amount of return air required to reach the effect of suppressing the diffusion of air contaminants upward is reduced, and the power consumption is reduced. Becomes smaller.
　例えば、還気口の面積が一致すると、還気口は、数が１つであり、長さが幅と等しく、且つ、２つの汚染源の真ん中に位置する場合は、還気口は、数が２つであり、長さが幅よりも大きく、且つ、互いに離間する（それぞれ対応する汚染源に近い）状況と比べられると、両方の汚染物制御効果は、何れも良好であるが（例えば、図６Ｂと図８に示すように）、図８における２つの還気口の態様に必要な還気風量は、図６Ｂにおける１つの還気口の還気風量よりも小さい。 For example, if the areas of the return vents are the same, the number of return vents is one, the length is equal to the width, and the return vents are located in the middle of the two sources of contamination. Both pollutant control effects are good (eg, figure) when compared to the situation where there are two, the length is greater than the width, and they are separated from each other (close to the corresponding pollutants). (As shown in 6B and FIG. 8), the return air volume required for the two return air openings in FIG. 8 is smaller than the return air volume of one return air port in FIG. 6B.
　５）還気口の面積、風速による、消費電力への影響
　還気装置の還気口の面積が減少し、還気速度が大きくなると、必要な風量を下げ、消費電力を下げることができる。 5) Effect of return air port area and wind speed on power consumption When the area of the return air port of the return air device decreases and the return air speed increases, the required air volume can be reduced and the power consumption can be reduced.
　実験により、還気口の形状と位置を変えずに、還気口の面積を０．０９ｍ２から０．０４ｍ２に減少させた場合に、即ち、還気面積を元の半分以上減少させると、吸込風速を元の２倍以上に上げる必要がなく、良好な汚染物制御効果に達することができる。即ち、還気口の面積と吸込風速を調整することで、必要な還気風量が小さくなるが、汚染物の制御効果が相当することを実現することができる。 When the area of the return air port is reduced from 0.09 m 2 to 0.04 m 2 without changing the shape and position of the return air port, that is, when the return air port area is reduced by more than half of the original area. It is not necessary to increase the suction wind speed to more than twice the original speed, and a good pollutant control effect can be achieved. That is, by adjusting the area of the return air port and the suction air speed, the required amount of return air air can be reduced, but it can be realized that the control effect of pollutants is considerable.
　以上、図面を参照しながら本発明を例示的に説明したが、本発明の具体的な実施には、上述した実施例に制限されないことは明らかである。 Although the present invention has been exemplified above with reference to the drawings, it is clear that the specific implementation of the present invention is not limited to the above-mentioned examples.
　例えば、上述した実施例において、さらに、センサを設けるとともに、対象空間内の空気汚染物と還気口との間の距離をセンサで直接または間接検出し、センサにより検出された最大距離と予め設定した距離との間の関係に基づいて、還気ファンの予め設定した回転数を決定するとともに、還気ファンを該予め設定した回転数で運転させることもできる。センサとしては、例えば、赤外線センサなどの人検出センサでもよい。 For example, in the above-described embodiment, a sensor is further provided, and the distance between the air pollutant in the target space and the return air port is directly or indirectly detected by the sensor, and the maximum distance detected by the sensor is preset. A preset rotation speed of the return air fan can be determined based on the relationship with the distance, and the return air fan can be operated at the preset rotation speed. The sensor may be, for example, a human detection sensor such as an infrared sensor.
　さらに、上述した実施例において、還気装置１０の還気口１１１は、正方形または長方形を呈するが、それらに限らず、還気装置１０の還気口１１１は、正方形または長方形以外の他の長尺形でもよく、または、円弧状、折れ線状などでもよい。 Further, in the above-described embodiment, the return port 111 of the return device 10 exhibits a square or a rectangle, but the return port 111 of the return device 10 is not limited to these, and the return port 111 of the return device 10 has a length other than the square or the rectangle. It may be a rectangular shape, an arc shape, a polygonal line shape, or the like.
　さらに、上述した実施例において、還気口１１１は、１つまたは２つ設けられたが、それに限らず、より多く設けられてもよい（例えば、１つの還気装置１０に複数の還気口を設けたり、または、それぞれ還気口１１１を有する還気装置１０を複数台設けたりしてもよい）。複数の還気口１１１が設けられた場合に、好ましくは、複数の還気口１１１は、対象空間Ｓ内の異なる位置に分布し、且つ、互いに離間する。これにより、汚染源に近づき、必要な還気量を低減することに役立ち、それによって、消費電力を低減し、還気装置１０の作動騒音を低減する。 Further, in the above-described embodiment, one or two return ports 111 are provided, but the number is not limited to the same, and more return ports may be provided (for example, a plurality of return ports in one return device 10). Or may be provided with a plurality of return air devices 10 each having a return air port 111). When a plurality of return ports 111 are provided, preferably, the plurality of return ports 111 are distributed at different positions in the target space S and are separated from each other. This helps to approach the pollution source and reduce the required return air amount, thereby reducing the power consumption and the operating noise of the return air device 10.
　さらに、上述した実施例において、還気装置１０において、還気ファン１２の予め設定した回転数ＰＶは、空気汚染物Ｐの濃度が上昇するにつれて大きくなるように設定されるか、または、予め設定した距離ＰＲは、予め設定した回転数ＰＶが大きくなるにつれて増大するように設定されてもよい。 Further, in the above-described embodiment, in the return air device 10, the preset rotation speed PV of the return air fan 12 is set or preset so as to increase as the concentration of the air pollutant P increases. The distance PR may be set so as to increase as the preset rotation speed PV increases.
　さらに、上述した実施例において、還気装置１０は、対象空間Ｓの底部または障害物の周縁に設けられたが、それに限らず、還気装置１０は、対象空間Ｓの下部に設けられてもよい（例えば、テーブルまたはキャビネットの天板の下方または対象空間Ｓの壁の下部などに設けられてもよい）。 Further, in the above-described embodiment, the return air device 10 is provided at the bottom of the target space S or the peripheral edge of the obstacle, but the return air device 10 may be provided at the lower part of the target space S. It may be provided (for example, it may be provided below the top plate of the table or cabinet or below the wall of the target space S).
　さらに、上述した実施例において、還気装置１０の左右側面には、排風口１１２が設けられたが、それに限らず、排風口１１２の位置と数は、必要に応じて適宜に設定可能であり、例えば、還気装置１０の底面に排風口を設けたり、還気装置１０の側面と底面に同時に排風口を設けたりしてもよい。 Further, in the above-described embodiment, the air exhaust ports 112 are provided on the left and right side surfaces of the return air device 10, but the position and number of the air exhaust ports 112 can be appropriately set as needed. For example, an exhaust port may be provided on the bottom surface of the return air device 10, or an exhaust port may be provided on the side surface and the bottom surface of the return air device 10 at the same time.
　さらに、還気装置１０と送気装置４０が対象空間Ｓで設けられた位置関係は、図５Ａ～図５Ｄに示すようになってもよい、ここに、対象空間の下部と底部のいずれにも還気装置１０を設けてもよく、下部のみまたは底部のみに還気装置１０を設けてもよい。さらに、対象空間Ｓには障害物ＯＢが含まれるときに、障害物ＯＢ、還気装置１０及び送気装置４０は、様々な位置関係に設けられることができ、例えば、図５Ｅ～図５Ｇにおいて、対象空間Ｓの底部（地面）に設けられた還気装置１０と対象空間Ｓの下部（例えば、テーブルの天板の周縁など）に設けられた還気装置１０とを同時に含む。 Further, the positional relationship in which the return air return device 10 and the air supply device 40 are provided in the target space S may be as shown in FIGS. 5A to 5D. The return air return device 10 may be provided, or the return air return device 10 may be provided only at the bottom or only at the bottom. Further, when the target space S includes the obstacle OB, the obstacle OB, the return air return device 10 and the air supply device 40 can be provided in various positional relationships, for example, in FIGS. 5E to 5G. , The return air device 10 provided at the bottom (ground) of the target space S and the return air device 10 provided at the lower part of the target space S (for example, the peripheral edge of the top plate of the table) are included at the same time.
　さらに、上述した実施例において、対象空間Ｓ内にテーブルとキャビネットなどの障害物ＯＢが存在するときに、好ましくは、還気口１１１は、対象空間Ｓ内に位置する障害物ＯＢと、対象空間Ｓの底部と、障害物ＯＢと対象空間Ｓの底部との間の空間とのうちの１つ以上の位置に設けられた。 Further, in the above-described embodiment, when an obstacle OB such as a table and a cabinet is present in the target space S, preferably, the return air port 111 is the obstacle OB located in the target space S and the target space. It is provided at one or more positions of the bottom of S and the space between the obstacle OB and the bottom of the target space S.
　上述した場合に、好ましくは、少なくとも１つの還気口１１１は、障害物ＯＢを対象空間Ｓの底部に向かって垂直に投影した投影空間（図１Ａにおいて、テーブルの天板の下方の空間）内に設けられるか、または、障害物ＯＢによる対象空間Ｓの底部における垂直投影（図１Ａにおいて、テーブルによる床ＦＬにおける垂直投影）内に設けられた。また、好ましくは、送気装置４０は、対象空間Ｓ内の障害物ＯＢによる対象空間Ｓの頂部における垂直投影外に設けられた。 In the above case, preferably, at least one return port 111 is in a projection space (in FIG. 1A, a space below the table top) in which the obstacle OB is projected vertically toward the bottom of the target space S. Or provided in a vertical projection at the bottom of the target space S by the obstacle OB (in FIG. 1A, a vertical projection on the floor FL by the table). Further, preferably, the air supply device 40 is provided outside the vertical projection at the top of the target space S by the obstacle OB in the target space S.
　さらに、上述した実施例において、還気装置１０において、還気口１１１の面積と予め設定した回転数ＰＶとの双方を調節することができるが、それに限らず、還気装置１０は、還気口１１１の面積と予め設定した回転数ＰＶとの一方だけを調節可能に形成されてもよい。 Further, in the above-described embodiment, in the return air device 10, both the area of the return air port 111 and the preset rotation speed PV can be adjusted, but the return air device 10 is not limited to this. Only one of the area of the mouth 111 and the preset rotation speed PV may be formed in an adjustable manner.
　さらに、上述した実施例において、送気装置４０の側面には、吸気口４１２が設けられたが、それに限らず、吸気口４１２の位置と数は、必要に応じて適切に設けられることができ、例えば、送気装置４０の頂面に吸気口を設けたり、送気装置４０の頂面と側面に同時に吸気口を設けたりしてもよい。 Further, in the above-described embodiment, the intake port 412 is provided on the side surface of the air supply device 40, but the position and number of the intake ports 412 can be appropriately provided as needed. For example, an intake port may be provided on the top surface of the air supply device 40, or an intake port may be provided on the top surface and the side surface of the air supply device 40 at the same time.
　さらに、上述した実施例４において、送気装置４０は、対象空間Ｓの頂部に設けられ、送気装置４０は、対象空間Ｓの下方に向かって直接送気するが、それに限らず、送気装置４０は、対象空間Ｓの下方に向かって間接送気してもよい。つまり、送気装置４０の送気方向は、対象空間Ｓの側部且つ上部から対象空間Ｓの頂部に向かって送気するものでもよいし、または、対象空間Ｓの側部から対象空間Ｓの上部に向かって水平に送気するものでもよい。例えば、送気装置４０は、対象空間Ｓの側壁の上部に設けられた。 Further, in the above-described fourth embodiment, the air supply device 40 is provided at the top of the target space S, and the air supply device 40 directly supplies air toward the lower side of the target space S, but the air supply device 40 is not limited to this. The device 40 may indirectly supply air toward the lower side of the target space S. That is, the air supply direction of the air supply device 40 may be one that supplies air from the side portion and the upper portion of the target space S toward the top of the target space S, or from the side portion of the target space S to the target space S. It may be the one that blows air horizontally toward the upper part. For example, the air supply device 40 is provided on the upper part of the side wall of the target space S.
　さらに、上述した実施例において、送気装置４０は、対象空間Ｓの外部（室外）から対象空間Ｓに新気を直接導入してもよいし、途中に空気浄化装置が設けられたダクトなどを介して還気装置１０に接続することによって、還気装置１０に吸い込まれて空気浄化装置に処理された空気を再び対象空間Ｓに送り込むようにしてもよい。 Further, in the above-described embodiment, the air supply device 40 may directly introduce fresh air into the target space S from the outside (outdoor) of the target space S, or may provide a duct or the like provided with an air purification device in the middle. By connecting to the return air device 10 via the air return device 10, the air sucked into the return air device 10 and processed by the air purification device may be sent back to the target space S.
　さらに、上述した実施例３において、空気浄化装置３０は、床ＦＬに設けられた床置き型の小型清浄機であるが、それに限らず、図９に示すように、空気浄化装置３０は、底部が例えば対象空間の地面に接触し、頂部が例えば対象空間の天井の裏側にはみだす大規模な直立型清浄機でもよい（このような空気浄化装置３０は、壁に寄りかかって設けられてもよいし、壁体の奥に設けられてもよい）。 Further, in the third embodiment described above, the air purification device 30 is a floor-standing small purifier provided on the floor FL, but the air purification device 30 is not limited to this, and as shown in FIG. 9, the air purification device 30 has a bottom portion. May be a large-scale upright purifier, for example, which comes into contact with the ground of the target space and the top of the air purifies, for example, behind the ceiling of the target space (such an air purification device 30 may be provided leaning against a wall). However, it may be installed in the back of the wall).
　本発明は、その範囲内において、各実施形態を自由に組み合わせたり、各実施形態を適宜に変形・省略したりすることができることが理解すべきである。 It should be understood that the present invention can freely combine each embodiment and appropriately modify or omit each embodiment within the scope of the present invention.
　１０　　還気装置
　１１　　ケース
　１１１　還気口
　１１２　排風口
　１２　　還気ファン
　２０　　排気装置
　３０　　空気浄化装置
　３１　　ケース
　４０　　送気装置
　４１　　ケース
　４１１　送気口
　４１２　吸気口
　４２　　送気ファン
　ＥＰ１　還気通路
　ＥＰ２　還気通路
　Ｓ　　　対象空間
　ＦＬ　　床
　ＣＬ　　天井
　ＯＢ　　障害物
　ＰＴ　　伝染病者
　Ｐ　　　空気汚染物 10 Return air device 11 Case 111 Return air port 112 Exhaust air port 12 Return air fan 20 Exhaust device 30 Air purification device 31 Case 40 Air supply device 41 Case 411 Air supply port 412 Intake port 42 Air supply fan EP1 Return air passage EP2 Return air Passage S Target space FL Floor CL Ceiling OB Obstacle PT Infectious disease person P Air pollutants

Claims (17)

  1. 　対象空間内の空気汚染物が拡散することを制御するための汚染物制御システムであって、
    　還気口と還気ファンとを有する還気装置、
    を含み、
    　前記還気口は、前記対象空間の下部に設けられ、
    　前記還気ファンは、予め設定した回転数で運転し、前記還気口を介して前記対象空間内の空気を吸引することによって、前記還気口との間の距離が予め設定した距離以下となる領域内の空気汚染物が、上方に向かって拡散する傾向を抑制する、
    ことを特徴とする、汚染物制御システム。     A pollutant control system for controlling the diffusion of air pollutants in the target space.
    A return air device with a return air port and a return air fan,
    Including
    The return port is provided at the lower part of the target space, and is provided.
    The return air fan operates at a preset rotation speed, and by sucking air in the target space through the return air port, the distance between the return air fan and the return air port is equal to or less than the preset distance. Suppresses the tendency of air pollutants in the area to diffuse upwards,
    A pollutant control system characterized by that.
  2. 　前記予め設定した回転数は、空気汚染物の濃度が上昇するにつれて大きくなるように設定されるか、または、前記予め設定した距離は、前記予め設定した回転数が大きくなるにつれて増大するように設定される、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     The preset rotation speed is set to increase as the concentration of air pollutants increases, or the preset distance is set to increase as the preset rotation speed increases. Be done,
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  3. 　前記領域は、前記対象空間内の地面から上へ０．４ｍ～１．９ｍの範囲をカバーする、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     The area covers a range of 0.4 m to 1.9 m above the ground in the target space.
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  4. 　前記還気口は、前記対象空間内に位置する障害物と、前記対象空間の底部と、前記障害物と前記対象空間の底部との間の空間と、のうちの１つ以上の位置に設けられる、
    ことを特徴とする、請求項３に記載の汚染物制御システム。     The return port is provided at one or more of an obstacle located in the target space, a bottom portion of the target space, and a space between the obstacle and the bottom portion of the target space. Be,
    The pollutant control system according to claim 3, wherein the pollutant control system is characterized in that.
  5. 　少なくとも１つの前記還気口は、前記障害物を前記対象空間の底部に向かって垂直に投影した投影空間内に設けられるか、または、前記障害物による前記対象空間の底部における垂直投影内に設けられる、
    ことを特徴とする、請求項４に記載の汚染物制御システム。     The at least one return port is provided in a projection space in which the obstacle is projected vertically toward the bottom of the target space, or is provided in a vertical projection at the bottom of the target space by the obstacle. Be,
    4. The pollutant control system according to claim 4.
  6. 　前記還気装置は、ケースを含み、
    　前記ケースに複数の前記還気口が設けられ、
    　複数の前記還気口は、互いに離間する、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     The return air device includes a case.
    The case is provided with a plurality of the return air openings,
    The plurality of return ports are separated from each other.
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  7. 　前記還気装置は、前記還気口の面積と前記予め設定した回転数の一方または双方を調節可能に設けられる、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     The return air device is provided so that the area of the return air port and one or both of the preset rotation speeds can be adjusted.
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  8. 　前記還気装置に接続された、前記対象空間の外部へ排風するための排気装置、
    をさらに含む、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     An exhaust device connected to the return air device for exhausting air to the outside of the target space,
    Including,
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  9. 　前記還気装置に接続された、空気汚染物を浄化するための空気浄化装置、
    をさらに含む、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     An air purification device for purifying air pollutants connected to the return air device,
    Including,
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  10. 　送気装置、
    をさらに含み、
    　前記送気装置の送気方向は、前記対象空間の頂部から前記対象空間に向かって送気するものと、前記対象空間の側部且つ上部から前記対象空間の頂部に向かって送気するものと、前記対象空間の側部から前記対象空間の上部に向かって水平に送気するものと、のうちの１種以上を含む、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     Air supply device,
    Including
    The air supply direction of the air supply device is one that supplies air from the top of the target space toward the target space and one that supplies air from the side and top of the target space toward the top of the target space. , Which includes one or more of those that horizontally supply air from the side portion of the target space toward the upper part of the target space.
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  11. 　前記送気装置は、前記対象空間の側壁の上部に設けられ、及び／または、
    　前記送気装置は、前記対象空間内の障害物による前記対象空間の頂部における垂直投影外に設けられる、
    ことを特徴とする、請求項１０に記載の汚染物制御システム。     The air supply device is provided on the upper part of the side wall of the target space, and / or.
    The air supply device is provided outside the vertical projection at the top of the target space by an obstacle in the target space.
    10. The pollutant control system according to claim 10.
  12. 　前記還気ファンが動作時に、予め設定した回転数により予め設定した吸込風速を形成し、
    　前記送気装置の送気風速は、前記予め設定した吸込風速以下に設定される、
    ことを特徴とする、請求項１０に記載の汚染物制御システム。     When the return air fan operates, a preset suction wind speed is formed by a preset rotation speed.
    The air supply air velocity of the air supply device is set to be equal to or lower than the preset suction air velocity.
    10. The pollutant control system according to claim 10.
  13. 　還気通路と、
    　排気装置と空気浄化装置の少なくとも一方を有する空気処理装置と、
    をさらに含み、
    　前記還気通路は、前記還気装置及び前記空気処理装置に接続され、
    　前記還気装置から流出した気流は、前記還気通路を通して前記空気処理装置に入る、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     The return air passage and
    An air treatment device having at least one of an exhaust device and an air purification device,
    Including
    The return air passage is connected to the return air device and the air treatment device.
    The airflow flowing out of the return air device enters the air treatment device through the return air passage.
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  14. 　前記還気通路は、架空床の下の空間、または、架空床の下の還気管である、
    ことを特徴とする、請求項１３に記載の汚染物制御システム。     The return air passage is a space under the fictitious floor or a return pipe under the fictitious floor.
    13. The pollutant control system according to claim 13.
  15. 　前記還気装置が単独に動作するときに、前記還気ファンは、予め設定した回転数で運転することで、前記還気口との間の距離が予め設定した距離であるとともに、前記還気口の上方に位置する空気汚染物を前記還気口に向かって動かす、
    ことを特徴とする、請求項１に記載の汚染物制御システム。     When the return air device operates independently, the return air fan operates at a preset rotation speed so that the distance between the return air fan and the return air port is a preset distance and the return air is returned. Move air pollutants above the mouth toward the return port,
    The pollutant control system according to claim 1, wherein the pollutant control system is characterized in that.
  16. 　対象空間内の空気汚染物を吸引するための、還気口と還気ファンとを有する還気装置であって、
    　前記還気ファンは、予め設定した回転数で運転し，前記還気口を介して前記対象空間内の空気を吸引することによって、前記還気口との間の距離が予め設定した距離以下となる領域内の空気汚染物が、上方に向かって拡散する傾向を抑制し、
    　前記還気ファンは、複数の前記予め設定した距離に対応する複数段の前記予め設定した回転数を有する、
    ことを特徴とする、還気装置。     A return air device having a return air port and a return air fan for sucking air pollutants in the target space.
    The return air fan operates at a preset rotation speed, and by sucking air in the target space through the return air port, the distance between the return air fan and the return air port is equal to or less than the preset distance. Suppresses the tendency of air pollutants in the area to diffuse upwards,
    The return air fan has a plurality of stages of the preset rotation speeds corresponding to the plurality of preset distances.
    A return air device characterized by that.
  17. 　請求項１６に記載の還気装置を制御し、
    　センサで空気汚染物と前記還気口との間の距離を直接または間接検出し、
    　前記センサにより検出された最大距離と前記予め設定した距離との間の関係に基づいて、前記還気ファンの予め設定した回転数を決定するとともに、前記還気ファンを該予め設定した回転数で運転させる、
    ことを特徴とする、還気装置の制御方法。     The return air device according to claim 16 is controlled by controlling the return air device.
    The sensor directly or indirectly detects the distance between the air pollutant and the return air port.
    Based on the relationship between the maximum distance detected by the sensor and the preset distance, the preset rotation speed of the return air fan is determined, and the return air fan is operated at the preset rotation speed. Let me drive
    A method of controlling a return air device, which is characterized by the fact that.
PCT/JP2021/043477 2020-11-27 2021-11-26 Pollutant control system, return air device, and control method therefor WO2022114148A1 (en)

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