WO2022114148A1 - Système de contrôle de polluant, dispositif d'air de retour et procédé de commande associé - Google Patents

Système de contrôle de polluant, dispositif d'air de retour et procédé de commande associé 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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WIPO (PCT)
Prior art keywords
air
return air
return
target space
control system
Prior art date
Application number
PCT/JP2021/043477
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English (en)
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/fr

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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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Ventilation (AREA)

Abstract

La présente invention concerne un système de contrôle de polluant, un dispositif d'air de retour (10), et un procédé de commande associé qui sont utiles pour prévenir ou supprimer les effets de la diffusion de polluants atmosphériques (P) dans un espace cible (S) sur la santé mentale et physique d'une personne présente sur un trajet le long duquel les polluants atmosphériques dans l'espace cible diffusent par attraction rapide des polluants par aspiration. Le système de contrôle de polluant selon la présente invention est utilisé pour réguler la diffusion de polluants atmosphériques dans un espace cible, et comprend un dispositif d'air de retour comportant une ouverture d'air de retour et un ventilateur d'air de retour. L'ouverture d'air de retour est disposée dans une partie inférieure de l'espace cible. Le ventilateur d'air de retour est actionné à une vitesse de rotation prédéfinie pour aspirer de l'air dans l'espace cible par l'intermédiaire de l'ouverture d'air de retour par aspiration, de façon à inhiber la tendance des polluants atmosphériques dans une région située jusqu'à une distance prédéfinie de l'ouverture d'air de retour pour diffuser vers le haut.
PCT/JP2021/043477 2020-11-27 2021-11-26 Système de contrôle de polluant, dispositif d'air de retour et procédé de commande associé WO2022114148A1 (fr)

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CN202011357901.8A CN114543238A (zh) 2020-11-27 2020-11-27 污染物控制系统、回风装置及其控制方法

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