WO2022162880A1 - 換気システム - Google Patents
換気システム Download PDFInfo
- Publication number
- WO2022162880A1 WO2022162880A1 PCT/JP2021/003284 JP2021003284W WO2022162880A1 WO 2022162880 A1 WO2022162880 A1 WO 2022162880A1 JP 2021003284 W JP2021003284 W JP 2021003284W WO 2022162880 A1 WO2022162880 A1 WO 2022162880A1
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- WO
- WIPO (PCT)
- Prior art keywords
- air
- room
- exhaust
- unit
- air supply
- Prior art date
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- 238000009423 ventilation Methods 0.000 title claims abstract description 266
- 238000001514 detection method Methods 0.000 claims description 74
- 238000003915 air pollution Methods 0.000 claims description 56
- 238000003905 indoor air pollution Methods 0.000 claims description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 7
- 206010011224 Cough Diseases 0.000 claims description 5
- 230000036760 body temperature Effects 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 238000011109 contamination Methods 0.000 description 103
- 238000004891 communication Methods 0.000 description 26
- 230000003749 cleanliness Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 239000000356 contaminant Substances 0.000 description 10
- 239000000809 air pollutant Substances 0.000 description 8
- 231100001243 air pollutant Toxicity 0.000 description 8
- 230000006870 function Effects 0.000 description 4
- 230000015654 memory Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 206010041232 sneezing Diseases 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 208000028752 abnormal posture Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Images
Classifications
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
- F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed
-
- 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
- F24F11/0001—Control or safety arrangements for ventilation
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
-
- 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
- F24F11/0001—Control or safety arrangements for ventilation
- F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
- F24F2011/0004—Control or safety arrangements for ventilation for admittance of outside air to create overpressure in a room
-
- 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
- F24F11/0001—Control or safety arrangements for ventilation
- F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
- F24F2011/0005—Control or safety arrangements for ventilation for admittance of outside air to create underpressure in a room, keeping contamination inside
-
- 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
- F24F2110/10—Temperature
-
- 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
-
- 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
- F24F2110/60—Odour
-
- 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
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
-
- 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 disclosure relates to a ventilation system that changes ventilation conditions in response to air pollution.
- Patent Document 1 discloses an outdoor air quality measuring means for measuring physical property values of outdoor air and an indoor air quality measuring means for measuring physical property values of indoor air when air taken in from the outdoors is supplied to the indoor space to ventilate the indoor space. Equipped with an air quality measuring means, and when the indoor air quality measuring means determines that an air pollutant has been generated, the air supply/exhaust balance increases the amount of air exhausted in the corresponding room and the amount of air supplied in other rooms.
- a ventilation system with a regulation mode is disclosed.
- Patent Document 1 focuses on preventing the diffusion of air pollutants to other rooms. over-inflate. As a result, an air flow is formed in which the indoor air in the other room is discharged to the outside through the contaminated room from the other room.
- Ventilation air flow such as that implemented in the ventilation system of Patent Document 1, will supply outside air to the contaminated room through another room, and will not bring in fresh outside air. . That is, the ventilation performed by the ventilation system of Patent Literature 1 could not purify the indoor air by introducing fresh outside air into the room where it was determined that the air pollutants were generated.
- the present disclosure has been made in view of the above, and aims to prevent indoor air in a contaminated room from being contaminated with indoor air from diffusing into other rooms, and to introduce fresh outside air into the contaminated room to
- An object of the present invention is to obtain a ventilation system capable of properly cleaning air.
- the ventilation system includes an air supply unit that supplies air taken in from the outside into the room of the first room, and an air supply unit that supplies the indoor air of the first room. It comprises an exhaust unit that discharges to the outdoors, and a control unit that controls the amount of air supplied from the air supply unit and the amount of exhaust air from the exhaust unit.
- a ventilation system is provided with an air supply and an exhaust in a first room of a building with polluted indoor air.
- the control unit adjusts the supply air volume in the air supply unit of the first room and the exhaust air volume in the exhaust unit of the first room in a normal ventilation mode in which the air supply air volume in the air supply unit and the exhaust air volume in the exhaust unit are the same air volume.
- the air supply volume of the air supply unit in the first room and the exhaust air volume of the exhaust unit in the first room are increased compared to the state of the normal ventilation mode, and the first The operation of the air supply unit and the exhaust unit is controlled in a specific ventilation mode in which the exhaust air volume of the exhaust unit in the room is larger than the air supply air volume of the air supply unit in the first room and the first room is made negative pressure.
- FIG. 1 is a diagram showing the configuration of a ventilation system according to a first embodiment
- FIG. FIG. 2 is a block diagram showing the functional configuration of the ventilation device of the ventilation system according to the first embodiment
- FIG. 2 is a block diagram showing the functional configuration of the control device for the ventilation system according to the first embodiment
- FIG. 3 is a block diagram showing the functional configuration of the air pollution detection unit of the ventilation system according to the first embodiment
- FIG. Schematic drawing showing the structure of a house in which the ventilation system according to the first embodiment is installed FIG.
- FIG. 1 shows an example of a hardware configuration of a processing circuit according to Embodiment 1; 4 is a flow chart showing the operation procedure of one ventilator of the ventilation system according to the first embodiment; 4 is a flow chart showing a procedure of coordinated operation of a plurality of ventilators of the ventilation system according to the first embodiment; A diagram showing an example of a first relationship table included in the ventilation system according to the first embodiment. A diagram showing an example of a second relationship table included in the ventilation system according to the first embodiment.
- FIG. 2 is a diagram showing a schematic configuration of a heat exchange ventilator included in the ventilation system according to the first embodiment;
- FIG. 1 is a diagram showing the configuration of a ventilation system 100 according to Embodiment 1.
- FIG. 2 is a block diagram showing the functional configuration of the ventilator 10 of the ventilation system 100 according to the first embodiment.
- FIG. 3 is a block diagram showing the functional configuration of the control device 20 of the ventilation system 100 according to the first embodiment.
- FIG. 4 is a block diagram showing the functional configuration of the air pollution detection unit 30 of the ventilation system 100 according to the first embodiment.
- FIG. 5 is a schematic diagram showing the structure of a house in which the ventilation system 100 according to the first embodiment is installed. The arrows in FIG. 5 indicate the directions in which the air flows. In FIG. 5, the arrow pointing from the inside of the room to the outside of the room indicates the exhaust. In FIG. 5, the arrow pointing from the outside of the room to the inside of the room indicates air supply.
- the ventilation system 100 includes a ventilator 10 that is installed to communicate between the indoor and the outdoors to ventilate the room, a control device 20 that controls the operation of the ventilator 10, and a pollution state of the indoor air, which is the indoor air.
- An air pollution detection unit 30 for detection, a door open/close detection unit 40, and a presence detection unit 50 are provided.
- the ventilator 10 is installed in a room in a house, installed on the wall 150 of the building of the house, and ventilates the room. That is, the ventilator 10 is fitted in a wall 150 of the building, which is a wall that separates the interior and the exterior of the building, to allow communication between the interior and the exterior.
- the ventilator 10 has an air supply unit 11 , an exhaust unit 12 and a ventilation communication unit 13 .
- the air supply unit 11 has an air supply blower 11a that generates an air supply flow from the outdoors to the indoors.
- the air supply fan 11a includes an impeller (not shown) and an air supply electric motor (not shown) for rotating the impeller. By driving the air supply fan 11a, outside air, which is outdoor air, is supplied into the room.
- the air volume of the air supply blower 11a By controlling the rotational speed of the air supply electric motor, the air volume of the air supply blower 11a can be controlled. That is, by changing the rotation speed of the air supply electric motor, the air volume of the air supply fan 11a can be changed, and the air volume of the air supply unit 11, which is the air volume of the ventilation device 10, can be changed. .
- the rotation speed of the air supply electric motor changes according to the control by the control device 20 . That is, the amount of supplied air and the amount of supplied air of the ventilator 10 are changed by the control by the control device 20 .
- the exhaust unit 12 has an exhaust blower 12a that generates an exhaust flow from the room to the outside.
- the exhaust blower 12a includes an impeller (not shown) and an exhaust electric motor (not shown) for rotating the impeller. By driving the exhaust air blower 12a, the indoor air is exhausted to the outside.
- the air volume of the exhaust fan 12a can be controlled. That is, by changing the rotation speed of the exhaust electric motor, the air volume of the exhaust fan 12a can be changed, and the exhaust air volume of the exhaust section 12, which is the exhaust air volume of the ventilator 10, can be changed.
- the rotation speed of the exhaust electric motor changes according to the control by the control device 20 . That is, the exhaust air volume and exhaust volume of the ventilation device 10 are changed by the control by the control device 20 .
- the ventilation communication unit 13 communicates with the control device 20.
- the residential building shown in FIG. 5 includes a first room R1, a second room R2, a third room R3 and a fourth room R4, which are rooms such as living rooms, a toilet T, a corridor C, exists.
- a first ventilation device 10a which is the ventilation device 10 for the first room R1, is arranged in the first room R1.
- the first ventilation device 10a is installed to communicate the interior and exterior of the first room R1, and ventilates the interior of the first room R1.
- a second ventilation device 10b which is the ventilation device 10 for the second room R2, is arranged in the second room R2.
- the second ventilation device 10b is installed so as to communicate the interior of the second room R2 with the exterior, and ventilates the interior of the second room R2.
- a third ventilation device 10c which is the ventilation device 10 for the third room R3, is arranged in the third room R3.
- the third ventilation device 10c is installed to communicate the interior and exterior of the third room R3, and ventilates the interior of the third room R3.
- a fourth ventilation device 10d which is the ventilation device 10 for the fourth room R4, is arranged in the fourth room R4.
- the fourth ventilation device 10d is installed to allow communication between the interior of the fourth room R4 and the exterior, and ventilates the interior of the fourth room R4.
- the second ventilator 10b, the third ventilator 10c, and the fourth ventilator 10d have the same configuration as the first ventilator 10a.
- the air pollution detection unit 30 detects the pollution state of indoor air, which is the indoor air in the room in which the air pollution detection unit 30 is installed, and transmits information on the indoor air pollution state, which is the detection result, to the control device 20. .
- Air pollution detection units 30 are installed in all rooms in which ventilation devices 10 are installed.
- the air pollution detection unit 30 has a communication unit (not shown) that communicates with the control device 20 .
- Communication between the air pollution detection unit 30 and the control device 20 may be infrared communication, wireless communication such as Wi-Fi (registered trademark) or Bluetooth (registered trademark), or wired communication.
- the air pollution detection unit 30 detects the pollution state of indoor air at a predetermined cycle.
- indoor air pollution examples include carbon dioxide (CO 2 ) indoor air pollution, dust pollution, and odor components.
- CO 2 carbon dioxide
- the air pollution detection unit 30 includes, as sensors for detecting the pollution state of the indoor air, a CO2 sensor 31 for detecting the CO2 concentration of the indoor air, a dust sensor 32 for detecting the dust concentration of the indoor air, and an odor sensor for detecting the odor of the indoor air. It has at least one of various sensors such as an odor sensor 33 that detects information to detect the pollution state of the indoor air.
- the sensor for detecting the pollution state of indoor air which the air pollution detection part 30 has is not limited to said sensor.
- the control device 20 controls the operation of the ventilation device 10.
- the control device 20 has a control section 21 , a storage section 22 and a control communication section 23 .
- the control unit 21 controls the operation of the ventilator 10, that is, the operation and stop of the air supply unit 11 and the exhaust unit 12.
- the control unit 21 controls the operation of the ventilator 10 so as to prevent indoor air contaminants from diffusing into other rooms and, conversely, to minimize the influence of other rooms on the polluted room.
- the control unit 21 sets the air supply amount of the air supply unit 11 in the ventilation device 10 in accordance with the indoor air pollution state detected by the air pollution detection unit 30, and instructs the air supply fan 11a to operate. I do.
- the control unit 21 sets the exhaust air volume of the exhaust unit 12 in the ventilation device 10 according to the pollution state of the indoor air detected by the air pollution detection unit 30, and instructs the exhaust fan 12a to operate. That is, the control unit 21 controls the operation of the ventilator 10 in accordance with information about the indoor air pollution state detected by the air pollution detection unit 30 .
- the control unit 21 controls the ventilation operation of the ventilator 10 with the normal ventilation mode and the specific ventilation mode.
- the normal ventilation mode is a ventilation mode in which the air supply air volume of the air supply unit 11, which is the air supply air volume of the ventilation device 10, and the exhaust air volume of the exhaust unit 12, which is the exhaust air volume of the ventilation device 10, are set to the same air volume. . Therefore, when the indoor air is ventilated in the normal ventilation mode, the air pressure in the room does not change from that when ventilation is not performed.
- the specific ventilation mode is a ventilation mode that is performed when it is detected that the indoor air in the room is dirty.
- the specific ventilation mode is a ventilation mode in which the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 are different.
- the storage unit 22 stores various information used to control the operation of the ventilation device 10.
- the control communication unit 23 communicates with other devices in the ventilation system 100.
- the control device 20 is realized, for example, as a processing circuit with the hardware configuration shown in FIG. 6 is a diagram illustrating an example of a hardware configuration of a processing circuit according to Embodiment 1.
- FIG. 6 When the control device 20 is implemented by the processing circuit shown in FIG. 6, the control device 20 is implemented by the processor 101 executing a program stored in the memory 102.
- FIG. Also, multiple processors and multiple memories may work together to achieve the above functions. Also, part of the functions of the control device 20 may be implemented as an electronic circuit, and other parts may be realized using the processor 101 and the memory 102 .
- the door open/closed detection unit 40 detects the open/closed state of the door of the room, and transmits information on the open/closed state of the door, which is the detection result, to the control unit 21 of the control device 20 .
- the door open/close detector 40 is set in all the rooms in which the ventilator 10 is installed.
- the door opening/closing detection unit 40 has a communication unit (not shown) that communicates with the control device 20 .
- the communication between the door open/close detector 40 and the control device 20 may be infrared communication, wireless communication such as Wi-Fi or Bluetooth, or wired communication.
- the door open/close detector 40 detects the open/close state of the door of the room at a predetermined cycle.
- the occupancy detection unit 50 detects the presence or absence of people in the room and the number of people in the room, and transmits information on the presence or absence of people in the room, which is the detection result, to the control unit 21 of the control device 20 .
- the occupancy detection unit 50 is set in all the rooms in which the ventilation device 10 is installed.
- the presence detection unit 50 has a communication unit (not shown) that communicates with the control device 20 . Communication between the presence detection unit 50 and the control device 20 may be infrared communication, wireless communication such as Wi-Fi or Bluetooth, or wired communication.
- the occupancy detection unit 50 detects the presence or absence of a person in the room at a predetermined cycle.
- control device 20 may be connected to all of the first ventilator 10a, the second ventilator 10b, the third ventilator 10c, and the fourth ventilator 10d, as shown in FIG. If the ventilators 10 controlled by the control device 20 are limited, it may be connected only to the ventilators 10 controlled by the control device 20 .
- control device 20 may be provided independently as a controller in the house, or may be on a server provided in the cloud that can communicate with each ventilation device 10 via Internet of Things (IoT) communication, etc. may be placed in Further, the control device 20 may be incorporated in the ventilation device 10 when only one ventilation device 10 is supported.
- IoT Internet of Things
- the air pollution detection unit 30 may be incorporated in the ventilation device 10, may be provided independently in the room, or may be installed in another product such as an air conditioner installed in the room to detect air pollution. part may be used.
- the door opening/closing detection unit 40 may be incorporated in the ventilation device 10 or may be provided independently in the room.
- the occupant detection unit 50 may be incorporated in the ventilation device 10, may be provided independently in the room, or may be incorporated in another product such as an air conditioner installed in the room. part may be used.
- the first ventilation device 10a installed in the first room R1 has the air supply unit 11 and the exhaust unit 12 provided inside a housing (not shown) of the first ventilation device 10a.
- the ventilator for air supply provided with the air supply unit 11 and the ventilation communication unit 13 and the ventilation device for exhaust provided with the exhaust unit 12 and the ventilation communication unit 13 are separately provided. may be configured by a separate device with
- the toilet T is provided with an exhaust fan 60 that is an exhaust fan for the toilet T and has only an exhaust part.
- FIG. 7 is a flow chart showing the operation procedure of one ventilator 10 of the ventilation system 100 according to the first embodiment.
- step S110 the control unit 21 of the control device 20 starts controlling the operation of the first ventilator 10a in the normal ventilation mode.
- the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 of the first ventilation device 10a in the normal ventilation mode are set to the air volumes initially set in the storage unit 22 of the control device 20 in advance.
- the user uses an input unit (not shown) provided in the ventilation system 100 to input instruction information for changing the air supply amount or the exhaust amount to the control unit 21, whereby the air supply of the first ventilation device 10a is changed. It is possible to change the air volume or displacement of the first ventilation device 10a.
- step S120 the control unit 21 determines the air pollution state of the first room R1 to determine whether the indoor air of the first room R1 is polluted.
- the air pollution state determination is determination of the indoor air pollution state.
- the control unit 21 controls the air pollution detection unit 30 to start detecting the pollution state of the indoor air in the first room R1.
- the air pollution detection unit 30 detects the indoor air pollution state of the first room R1 in which the first ventilation device 10a is installed, and transmits the detection result of the pollution state to the control unit 21 .
- the control unit 21 determines whether the indoor air in the first room R1 is contaminated based on the detection result of the pollution state transmitted from the air pollution detection unit 30.
- the control unit 21 compares the value of the detection result of the pollution state of the indoor air with a predetermined pollution state threshold, and if the value of the detection result is equal to or greater than the pollution state threshold, It is determined that the indoor air is polluted.
- the control unit 21 compares the value of the detection result of the pollution state of the indoor air with a predetermined pollution state threshold, and if the value of the detection result is less than the pollution state threshold, Determine that the indoor air is not polluted.
- the contamination threshold here is a determination threshold for the control unit 21 to determine whether or not to change the operation mode of the first ventilation device 10a from the normal ventilation mode to the specific ventilation mode.
- step S120 If it is determined that the indoor air in the first room R1 is polluted, the answer to step S120 is Yes, and the process proceeds to step S130. If it is determined that the indoor air in the first room R1 is not contaminated, the result of step S120 is No, and the process proceeds to step S150.
- the first room R1 is the contamination determination room, which is the specific room in which the indoor air is determined to be contaminated.
- the contamination determination room is the first room in the building.
- control unit 21 determines to continue operation in the normal ventilation mode, and returns to step S120.
- step S130 the control unit 21 controls the operation of the first ventilator 10a in the specific ventilation mode for the first room R1, which is the first room in which the indoor air is determined to be contaminated.
- the control unit 21 increases the air volume of the air supply fan 11a more than in the normal ventilation mode, increases the air volume of the air supply unit 11, which is the air volume of the first ventilation device 10a, Control is performed so that the pressure in the first room R1 is negative.
- the control unit 21 increases the air volume of the exhaust fan 12a more than in the normal ventilation mode, and controls to increase the exhaust air volume of the exhaust unit 12, which is the exhaust air volume of the first ventilation device 10a.
- the first room R1 is a contamination determination room, which is the first room in which the indoor air is determined to be contaminated.
- control unit 21 controls the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 so that "exhaust air volume of the exhaust unit 12 > air supply air volume of the air supply unit 11". That is, the amount of increase in the amount of air supplied from the air supply unit 11 and the amount of air exhausted from the exhaust unit 12 are adjusted so that "the amount of air exhausted from the exhaust unit 12 is greater than the amount of air supplied from the air supply unit 11". Controls the amount of both increments.
- step S130 both the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 are increased to increase the ventilation volume of the first ventilation device 10a, thereby increasing the contaminated air volume of the first room R1.
- the indoor air can be quickly exhausted to the outside.
- the reason why the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 is set to "exhaust air volume of the exhaust unit 12>air supply air volume of the air supply unit 11" is that This is to prevent contaminated air in the first room R1 from leaking out of the first room R1 and contaminating clean air in other rooms by setting R1 to a negative pressure. This can prevent the air pollutants contained in the contaminated air in the first room R1 from diffusing into rooms other than the first room R1.
- the ventilation volume of the ventilation device 10 can be defined as the exhaust volume of the exhaust unit 12 when the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 are different.
- step S130 the control unit 21 sets the air supply air volume in the air supply unit 11 of the first room R1 in the normal ventilation mode in which the air supply air volume in the air supply unit 11 and the air exhaust air volume in the air exhaust unit 12 are the same air volume.
- the air supply air volume of the air supply unit 11 in the first room R1 and the exhaust air volume of the exhaust unit 12 in the first room R1 The air volume is increased compared to the state of the normal ventilation mode, and the exhaust air volume of the exhaust unit 12 in the first room R1 is made larger than the air supply air volume of the air supply unit 11 in the first room R1.
- the operation of the air supply unit 11 and the exhaust unit 12 is controlled in a specific ventilation mode for negative pressure.
- step S140 the control unit 21 determines whether or not a predetermined waiting time has elapsed. Specifically, the control unit 21 uses the clock function of the control unit 21 to determine whether or not the standby time has elapsed after the operation of the first ventilator 10a is switched to the specific ventilation mode in step S130. .
- step S140 If it is determined that the predetermined standby time has not elapsed, the answer to step S140 is No, and step S140 is repeated. If it is determined that the predetermined waiting time has elapsed, the result is Yes in step S140, and the process returns to step S120. Even if the operation mode of the first ventilation device 10a is changed from the normal ventilation mode to the specific ventilation mode, the polluted state of the indoor air in the first room R1 is not immediately improved. Therefore, the control unit 21 returns to step S120 after the predetermined waiting time has passed.
- step S130 by increasing both the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 to increase the ventilation volume of the first ventilation device 10a, the first room R1 polluted indoor air can be quickly exhausted outdoors. Then, the magnitude relationship between the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 is set to "exhaust air volume of the exhaust unit 12 > air supply air volume of the air supply unit 11", and the pressure in the first room R1 is set to negative pressure. Thus, it is possible to prevent contaminated air in the first room R1 from leaking out of the first room R1 and contaminating clean air in other rooms. This can prevent the air pollutants contained in the contaminated air in the first room R1 from diffusing into rooms other than the first room R1.
- step S130 the air supply unit 11 can take fresh outdoor air into the contamination determination room.
- FIG. 8 is a flow chart showing a procedure of cooperative operation of a plurality of ventilators 10 of the ventilation system 100 according to the first embodiment.
- the control unit 21 starts controlling the operation of the plurality of ventilators 10 in the normal ventilation mode.
- the plurality of ventilators 10 are a first ventilator 10a, a second ventilator 10b, a third ventilator 10c, and a fourth ventilator 10d.
- the air supply volume of the air supply unit 11 of the first ventilation device 10a and the exhaust air volume of the exhaust unit 12 of the first ventilation device 10a in the normal ventilation mode of the plurality of ventilation devices 10 are the air volumes initially set in the storage unit 22 of the control device 20 in advance. be.
- the user inputs instruction information for changing the air supply air volume of the air supply unit 11 or the exhaust air volume of the exhaust unit 12 to the control unit 21 using an input unit (not shown) provided in the ventilation system 100.
- an input unit not shown
- step S220 the control unit 21 determines the air pollution state of the plurality of rooms in which the ventilation device 10 is installed, and determines the air pollution state of at least one of the plurality of rooms in which the ventilation device 10 is installed. Determine whether the air is polluted. Specifically, the control unit 21 controls the plurality of air pollution detection units 30 installed in the ventilation device 10 to start detecting the indoor air pollution state. A plurality of air pollution detection units 30 detect the pollution state of indoor air and transmit the detection result of the pollution state to the control unit 21 .
- step S220 If it is determined that the indoor air in at least one of the multiple rooms in which the ventilation device 10 is installed is polluted, the answer to step S220 is Yes, and the process proceeds to step S230. If it is determined that the indoor air in all the rooms is not polluted, the result in step S220 is No, and the process proceeds to step S250.
- step S250 the control unit 21 controls operation in the normal ventilation mode for all of the plurality of rooms, and returns to step S220.
- steps S230 and S240 are performed as operation control in the specific ventilation mode.
- step S230 the control unit 21 performs the following control on the ventilation device 10 in the contamination determination room, which is the first room in which the indoor air is determined to be contaminated.
- the control unit 21 increases the air volume of the air supply fan 11a, increases the air volume of the air supply unit 11, which is the air volume of the ventilation device 10, and increases the air volume of the ventilation device 10. to negative pressure.
- the control unit 21 increases the air volume of the exhaust fan 12 a to increase the exhaust air volume of the exhaust unit 12 , which is the exhaust air volume of the ventilator 10 .
- control unit 21 controls the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 so that "exhaust air volume of the exhaust unit 12 > air supply air volume of the air supply unit 11". That is, the amount of increase in the amount of air supplied from the air supply unit 11 and the amount of air exhausted from the exhaust unit 12 are adjusted so that "the amount of air exhausted from the exhaust unit 12 is greater than the amount of air supplied from the air supply unit 11". Controls the amount of both increments.
- step S230 for the ventilation device 10 of the contamination determination room, the ventilation volume of the ventilation device 10 of the contamination determination room is increased by increasing both the air supply volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12. , the contaminated indoor air in the contamination determination room can be quickly exhausted to the outside.
- the reason why the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 is set to "exhaust air volume of the exhaust unit 12 > air supply air volume of the air supply unit 11" is because the contamination determination room is This is to prevent contaminated air in the contamination determination room from leaking out of the contamination determination room and contaminating clean air in other rooms by applying a negative pressure. As a result, air contaminants contained in the contaminated air in the contamination determination room can be prevented from diffusing into rooms other than the contamination determination room.
- step S230 the control unit 21 causes the air supply unit 11 of the first room R1 to supply air in the normal ventilation mode in which the air supply air volume in the air supply unit 11 and the exhaust air volume in the exhaust unit 12 are the same air volume.
- the air supply air volume of the air supply unit 11 in the first room R1 and the exhaust air volume of the exhaust unit 12 in the first room R1 The air volume is increased compared to the state of the normal ventilation mode, and the exhaust air volume of the exhaust unit 12 in the first room R1 is made larger than the air supply air volume of the air supply unit 11 in the first room R1.
- the operation of the air supply unit 11 and the exhaust unit 12 is controlled in a specific ventilation mode for negative pressure.
- step S240 the control unit 21 performs the following control on the ventilation device 10 of the cleanliness determination room, which is the room in which the indoor air is determined to be unpolluted.
- the cleanliness determination room is the second room in the building.
- the control unit 21 increases the air volume of the air supply blower 11a for the ventilation device 10 of the cleanliness judgment room, increases the air supply air volume of the air supply unit 11, which is the air supply air volume of the ventilation device 10, and increases the air supply air volume of the ventilation device 10. is controlled to be a positive pressure.
- step S240 the process proceeds to step S260.
- control unit 21 controls the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 so that "exhaust air volume of the exhaust unit 12 ⁇ air supply air volume of the air supply unit 11". That is, the amount of increase in the air supply air volume of the air supply unit 11 is controlled so that "the exhaust air volume of the exhaust part 12 is smaller than the air supply air volume of the air supply part 11".
- step S240 for the ventilation device 10 of the cleanliness determination room, the exhaust air volume of the exhaust unit 12, which is the exhaust air volume of the ventilation device 10, is not changed.
- the control unit 21 may perform control to increase the exhaust air volume of the exhaust unit 12, which is the exhaust air volume of the ventilation device 10, for the ventilation device 10 of the cleanliness determination room.
- the control unit 21 determines that the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 is the same as described above: The amount of increase in the air supply air volume of the air supply unit 11 and the exhaust Controls the amount of increase in the exhaust air volume of the unit 12 .
- step S240 the control unit 21 determines that the relationship between the amount of air supplied by the air supply unit 11 and the amount of air exhausted by the exhaust unit 12 in the ventilation device 10 of the cleanness determination room is such that "exhaust air amount of the exhaust unit 12 ⁇ supply
- the exhaust air volume of the exhaust unit 12 is reduced so that the air supply air volume of the air supply unit 11 becomes ", that is, "the exhaust air volume of the exhaust unit 12 is smaller than the air supply air volume of the air supply unit 11". Therefore, the cleanliness determination room may be set to a positive pressure. In this case, the control unit 21 does not change the amount of air supplied from the air supply unit 11 for the ventilation device 10 of the cleanness determination room.
- step S240 the control unit 21 determines that the exhaust air volume of the exhaust part 12 of the ventilation device 10 of the cleanness judgment room is smaller than the air supply air volume of the air supply part 11 of the ventilation device 10 of the cleanliness judgment room in the specific ventilation mode. At least one of the air supply volume of the air supply unit 11 of the cleanliness judgment room and the exhaust air volume of the air discharge unit 12 of the cleanliness judgment room should be controlled to make the cleanliness judgment room positive pressure.
- step S240 regarding the ventilation device 10 of the cleanness determination room, the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the air exhaust unit 12 is determined as "exhaust air volume of the air exhaust part 12 ⁇ air supply air volume of the air supply part 11".
- the reason for this is that by setting the air pressure in the cleanliness determination room to a positive pressure, it is possible to prevent air from entering from other rooms, including the contamination determination room. .
- step S260 the control unit 21 determines whether or not a predetermined waiting time has elapsed. Specifically, the control unit 21 uses the clock function provided in the control unit 21 to determine whether or not the standby time has elapsed after the operation of the ventilator 10 is switched to the specific ventilation mode in steps S230 and S240. do.
- step S260 If it is determined that the predetermined waiting time has not elapsed, the answer to step S260 is No, and step S260 is repeated. If it is determined that the predetermined standby time has elapsed, the determination in step S260 is Yes, and the process returns to step S220. Even if the operation mode of the ventilation device 10 in the contamination determination room is changed from the normal ventilation mode to the specific ventilation mode, the contamination state of the indoor air in the contamination determination room is not immediately improved. Therefore, the controller 21 returns to step S220 after the predetermined waiting time has passed.
- a plurality of contamination thresholds which are determination thresholds, may be provided.
- the ventilation system 100 increases the air pollution level of the indoor air in the contamination determination room, corresponding to the contamination level of the indoor air detected by the air contamination detection unit 30.
- a first relationship table is provided so as to increase the amount of air supplied to the air section 11 and the amount of air discharged from the exhaust section 12 .
- the control unit 21 controls to increase the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 as the air pollution level of the indoor air is higher. It can be performed.
- the ventilation system 100 can prevent the air pollutants contained in the polluted air in the contamination determination room from diffusing to other rooms than the contamination determination room in accordance with the air pollution level of the indoor air in the contamination determination room. can be prevented more reliably.
- FIG. 9 is a diagram showing an example of the first relationship table included in the ventilation system 100 according to the first embodiment.
- the first relationship table shown in FIG. 9 is a relationship table showing the relationship between a plurality of air pollution level determination thresholds and the set air volume of the air supply air volume of the air supply unit 11 and the exhaust air volume of the air exhaust unit 12 .
- the determination threshold for the air pollution level is the pollution state threshold, which is the determination threshold described above.
- the first relationship table is stored, for example, in storage unit 22 of control device 20 .
- the pollution level is the air pollution level described above, and the larger the numerical value, the greater the degree of indoor air pollution.
- step S130 and step S230 the ventilation system 100 responds to the contamination level of the indoor air detected by the air pollution detection unit 30, and the higher the contamination level of the indoor air in the contamination determination room, the more negative the contamination determination room becomes.
- a second relationship table is provided to increase pressure.
- the control unit 21 can perform control such that the higher the contamination level of the indoor air, the greater the amount of negative pressure in the contamination determination room.
- the control unit 21 can control the amount of air exhausted from the exhaust unit 12 to be greater than the amount of air supplied from the air supply unit 11 to increase the negative pressure in the contamination determination room.
- the ventilation system 100 can prevent the air pollutants contained in the polluted air in the contamination determination room from diffusing to other rooms than the contamination determination room in accordance with the air pollution level of the indoor air in the contamination determination room. can be prevented more reliably.
- FIG. 10 is a diagram showing an example of the second relationship table included in the ventilation system 100 according to the first embodiment.
- the relationship table shown in FIG. 10 is a relationship table showing the relationship between a plurality of contamination level determination thresholds and the set negative pressure amount of the atmospheric pressure of the contamination determination room.
- the contamination level determination threshold is the contamination state threshold, which is the determination threshold described above.
- the second relationship table is stored, for example, in storage unit 22 of control device 20 .
- the pollution level is the air pollution level described above, and the larger the numerical value, the greater the degree of indoor air pollution.
- the ventilation system 100 corresponding to the contamination level of the indoor air detected by the air contamination detection unit 30, increases the contamination level of the indoor air in the contamination determination room.
- a third relationship table may be provided so as to increase all of the amount of air supplied from the air supply unit 11, the amount of exhausted air from the exhaust unit 12, and the amount of negative pressure in the contamination determination room.
- the third relational table has a configuration in which the first relational table and the second relational table are combined.
- control unit 21 adjusts the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 of the contamination determination room as the pollution level of the indoor air is higher, Control can be performed to increase the amount of negative pressure in the contamination determination room.
- control unit 21 controls the amount of air supplied by the air supply unit 11 in the contamination determination room and the amount of air supplied by the air supply unit 11 in the contamination determination room and At least one of control to increase the exhaust air volume of the exhaust unit 12 in , or control to increase the negative pressure of the contamination determination room by making the exhaust air volume of the exhaust unit 12 larger than the air supply air volume of the air supply unit 11 can be performed .
- the control unit 21 may increase the negative pressure in the contamination determination room to increase the differential pressure between the air pressure in the contamination determination room and the air pressure in the cleanliness determination room.
- the differential pressure may be measured by installing a pressure sensor in each room.
- the ventilation rate of each room, the degree of negative pressure and the degree of positive pressure can be known from the operating states of the air supply unit 11 and the exhaust unit 12 of each room.
- the control unit 21 may determine the degree of differential pressure based on these pieces of information.
- steps S130 and S230 when the door opening/closing detection unit 40 detects that the door of the contamination determination room is open, the control unit 21, while the opening of the door of the contamination determination room is detected, By further increasing the exhaust air volume of the ventilation device 10 in the contamination determination room to increase the negative pressure in the contamination determination room, it is possible to prevent the diffusion of contaminants.
- steps S130 and S230 based on the detection result of the occupant detection unit 50, the amount of exhaust air from the exhaust unit 12 in the contamination determination room is increased in accordance with the number of people in the contamination determination room.
- the negative pressure of it is possible to prevent diffusion of contaminants to the outside of the contamination determination room. That is, as the number of people in the contamination determination room increases, the amount of exhaust air from the exhaust unit 12 in the contamination determination room is increased to increase the negative pressure in the contamination determination room.
- instruction information is input to change the supply air volume and the exhaust air volume of the ventilation device 10 for each room while maintaining the magnitude relationship between the air supply volume and the exhaust air volume of the ventilation device 10 in each room.
- the control unit 21 controls the amount of air supplied and the amount of exhausted air of the ventilation device 10 in each room based on the instruction information.
- control to return to the normal ventilation mode and control to continue the normal ventilation mode are performed. It is done.
- the operation mode of the ventilation device 10 is set to the specific ventilation mode, only a specific administrator registered in advance in the control device 20 has the authority to cancel the specific ventilation mode, and returns to the normal ventilation mode. can also Moreover, only a specific administrator registered in advance in the control device 20 has the authority to set the specific ventilation mode, and can also set the normal ventilation mode.
- the ventilation system 100 has an input unit that can input instruction information.
- the controller 21 can register an administrator who can set the specific ventilation mode or cancel the specific ventilation mode.
- the control unit 21 sets the specific ventilation mode and operates the ventilator 10 in the specific ventilation mode when receiving instruction information for instructing the setting of the specific ventilation mode input from the administrator via the input unit.
- Control The control unit 21 cancels the specific ventilation mode when receiving instruction information for instructing cancellation of the specific ventilation mode input from the administrator via the input unit.
- step S150 is eliminated, and once the specific ventilation mode is entered, only a specific administrator registered in advance can cancel the specific ventilation mode.
- the specific ventilation mode may be forcibly continued until an instruction to cancel the specific ventilation mode is input to the control unit 21 by the administrator.
- step S250 is omitted, and once the specific ventilation mode is entered, only a specific administrator registered in advance can cancel the specific ventilation mode, and the specific management is performed.
- the specific ventilation mode may be forcibly continued until an instruction to cancel the specific ventilation mode is input to the control unit 21 by the user.
- a specific administrator can arbitrarily set the specific ventilation mode and cancel the specific ventilation mode.
- the control unit 21 sets the specific ventilation mode and operates the ventilator 10 in the specific ventilation mode when receiving instruction information for instructing the setting of the specific ventilation mode input from the administrator via the input unit.
- Control The control unit 21 cancels the specific ventilation mode when receiving instruction information for instructing cancellation of the specific ventilation mode input from the administrator via the input unit.
- the detection of indoor air pollution by the air pollution detection unit 30 includes, in a broad sense, detection of a patient suffering from a disease.
- a patient infected with a contagious virus excretes viral contaminants.
- the control unit 21 determines whether the body temperature of the person in the room is abnormally high based on the body temperature information of the person in the room detected by the image sensor, and determines whether the person in the room is normal. patient.
- the image sensor is exemplified by an image sensor capable of imaging in a wide infrared range and an image sensor capable of imaging in a visible light range.
- the control unit 21 also controls the coughing motion of a person in the room, the sneezing motion of a person in the room, and the motion of a person in the room to fall down, based on the posture motion information of the person in the room detected by the image sensor. It is determined whether the person in the room is normal or a patient by determining whether there is an abnormal posture.
- the ventilation system 100 may include a sound collecting microphone as the air pollution detection unit 30 .
- the control unit 21 determines whether the person in the room is a normal person or a patient based on the vocalization information of a person in the room, such as coughing or sneezing, detected by the sound collecting microphone. to judge whether
- the control unit 21 determines that the target person in the room is an infected person. ” is possible. In this case as well, the control unit 21 can determine that air pollution occurs in the room in the same manner as other air pollution state determinations based on the detection results of the air pollution detection unit 30 .
- a heat exchange type ventilator may be used as the ventilator 10 .
- the ventilator 10 since an integrated heat exchange type ventilator equipped with an air supply part, an exhaust part, and heat exchange means between the supply air and the exhaust air is installed, the air conditioning load of the contamination judgment room will increase and the people in the contamination judgment room will It is possible to suppress the deterioration of the thermal sensation of the body.
- FIG. 11 is a diagram showing a schematic configuration of the heat exchange ventilator 200 included in the ventilation system 100 according to the first embodiment.
- the heat exchange ventilator 200 is a ventilator that can be used as the ventilator 10 described above.
- the heat exchange ventilator 200 ventilates the room by taking in a supply air flow 221 from the outdoors into the room and sending out an exhaust air flow 222 from the room to the outside.
- the heat exchange ventilator 200 causes total heat exchange between the supply airflow 221 and the exhaust airflow 222 in the total heat exchange element 210 . That is, in the heat exchange ventilator 200, the indoor air and the outdoor air pass through the total heat exchange element 210, so that total heat exchange is performed between the indoor air and the outdoor air.
- an air supply passage 207 through which the air supply flow 221 passes is formed.
- an exhaust passage 208 through which the exhaust flow 222 passes is formed.
- the air supply passage 207 is provided with an air supply blower 205 that generates an air flow from the outside to the inside of the room. That is, the supply air blower 205 generates an airflow as the supply airflow 221 directed from the outside to the room through the air supply passage 207 .
- the exhaust flow path 208 is provided with an exhaust blower 206 that generates an air flow from the room to the outside. That is, the exhaust air blower 206 generates an airflow as the exhaust flow 222 from the room to the outside through the exhaust flow path 208 .
- FIG. 11 schematically shows components provided inside the casing 209 .
- a supply air outlet 202 and an exhaust air inlet 203 are provided on the side surface of the casing 209 on the indoor side.
- a supply air intake port 201 and an exhaust air outlet 204 are provided on the side surface of the casing 209 on the outdoor side.
- the heat exchange ventilator 200 takes in outdoor air from the air intake port 201 into the air supply passage 207 through the operation of the air supply blower 205 to generate the air supply flow 221 .
- the air supply flow 221 passes through the air supply flow path 207 including the total heat exchange element 210 and is blown into the room from the air supply outlet 202 .
- the heat exchange ventilator 200 draws indoor air from the exhaust suction port 203 into the exhaust passage 208 by operating the exhaust air blower 206 to generate the exhaust flow 222 .
- the exhaust flow 222 passes through the exhaust flow path 208 including the total heat exchange element 210 and is blown out of the room from the exhaust outlet 204 .
- the heat exchanger air supply section including the air supply passage 207 and the air supply blower 205 corresponds to the air supply section 11 of the ventilator 10 described above.
- the heat exchanger exhaust section including the exhaust passage 208 and the exhaust fan 206 corresponds to the exhaust section 12 of the ventilator 10 described above.
- the ventilation system 100 increases both the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 for the ventilation device 10 of the contamination determination room.
- the magnitude relationship between the air supply air volume of the air supply unit 11 and the exhaust air volume of the exhaust unit 12 is set to "exhaust air volume of the exhaust unit 12>air supply air volume of the air supply unit 11", so that the contamination determination room is set to a negative pressure.
- the ventilation system 100 increases the ventilation volume of the first room R1 by increasing the exhaust air volume of the exhaust unit 12 of the ventilation device 10 of the contamination determination room and increasing the ventilation volume of the first ventilation device 10a. , the pollutant components in the air that flow into the contamination determination room from other rooms and increase can be quickly discharged, and fresh outside air can be sufficiently taken into the contamination determination room.
- the magnitude relationship between the amount of air supplied by the air supply unit 11 and the amount of air exhausted by the exhaust unit 12 is set to "exhaust air amount of the exhaust unit 12 ⁇
- the air pressure in the cleanliness determination room to positive pressure as the "air supply air volume of the air supply unit 11”
- the ventilation system 100 since the ventilation system 100 according to the first embodiment does not ventilate the indoor air in the cleanliness judgment room by actively flowing it into the contamination judgment room and exhausting it, the air pollution detection unit 30 is polluted to a level that cannot be detected. The indoor air in the cleanliness determination room is suppressed from flowing into the contamination determination room. Therefore, the ventilation system 100 can reduce the influence of contaminants in the air received from the cleanliness determination room on the contamination determination room.
- the indoor air in the contamination determination room in which the indoor air is contaminated from diffusing into the cleanliness determination room, and to introduce fresh outside air into the contamination determination room so that the indoor air in the contamination determination room It is possible to appropriately clean the air.
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Abstract
Description
図1は、実施の形態1にかかる換気システム100の構成を示す図である。図2は、実施の形態1にかかる換気システム100の換気装置10の機能構成を示すブロック図である。図3は、実施の形態1にかかる換気システム100の制御装置20の機能構成を示すブロック図である。図4は、実施の形態1にかかる換気システム100の空気汚染検知部30の機能構成を示すブロック図である。図5は、実施の形態1にかかる換気システム100が設置された住宅の構造を示す見取り図である。図5における矢印は、空気が流れる方向を示している。図5において、部屋の内部から部屋の外部に向かう矢印は、排気を示している。図5において、部屋の外部から部屋の内部に向かう矢印は、給気を示している。
Claims (13)
- 室外より取り入れた空気を第1の部屋の室内に供給する給気部と、
前記第1の部屋の室内空気を室外に排出する排気部と、
前記給気部における給気風量と前記排気部における排気風量とを制御する制御部と、
を備え、
前記給気部と前記排気部とが、建物における室内空気が汚染された第1の部屋に設けられ、
前記制御部は、前記給気部における給気風量と前記排気部における排気風量とが同じ風量とされる通常換気モードで前記第1の部屋の前記給気部における給気風量と前記第1の部屋の前記排気部における排気風量との制御を行っている場合に、前記第1の部屋における前記給気部の給気風量と前記第1の部屋における前記排気部の排気風量とを前記通常換気モードの状態と比べて増加させるとともに前記第1の部屋における前記排気部の排気風量を前記第1の部屋における前記給気部の給気風量より大として前記第1の部屋を負圧にする特定換気モードで前記給気部と前記排気部との運転を制御すること、
を特徴とする換気システム。 - 前記給気部と前記排気部とが、前記建物における前記第1の部屋ではない部屋であって室内空気が汚染されていない第2の部屋にもさらに設けられ、
前記制御部は、前記特定換気モードにおいて、前記第2の部屋の前記排気部の排気風量が前記第2の部屋の前記給気部の給気風量より小となるように、前記第2の部屋の前記給気部の給気風量と前記第2の部屋の前記排気部の排気風量とのうちの少なくともとも一方を制御して、前記第2の部屋を正圧にすること、
を特徴とする請求項1に記載の換気システム。 - 前記制御部は、前記特定換気モードにおいて、前記第2の部屋の前記給気部の給気風量を増加させて、前記第2の部屋の前記排気部の排気風量を前記第2の部屋の前記給気部の給気風量より小として、前記第2の部屋を正圧にすること、
を特徴とする請求項2に記載の換気システム。 - 前記制御部は、前記第1の部屋の負圧を大きくして、前記第1の部屋の気圧と前記第2の部屋の気圧との差圧を大きくすること、
を特徴とする請求項2または3に記載の換気システム。 - 前記制御部は、前記特定換気モードにおいて、前記第1の部屋における前記給気部の給気風量と前記排気部の排気風量との大小関係、および前記第2の部屋における前記給気部の給気風量と前記排気部の排気風量との大小関係を維持したまま、前記第1の部屋における前記給気部の給気風量および前記排気部の排気風量と、前記第2の部屋における前記給気部の給気風量および前記排気部の排気風量を個別に変更すること、
を特徴とする請求項2から4のいずれか1つに記載の換気システム。 - 前記建物における部屋の室内空気の汚染状態を検出する空気汚染検知部を備え、
前記制御部は、前記空気汚染検知部における前記室内空気の汚染状態の検出結果に基づいて、室内空気が汚染されていると判定した部屋を前記第1の部屋として前記特定換気モードを行うこと、
を特徴とする請求項1から5のいずれか1つに記載の換気システム。 - 前記空気汚染検知部における前記室内空気の汚染状態の検出結果に基づいて室内空気の空気汚染レベルを判定するための空気汚染レベルの判定閾値を複数有し、
前記制御部は、前記室内空気の汚染状態の検出結果と前記空気汚染レベルの判定閾値とにより判定される前記空気汚染レベルが高いほど、前記第1の部屋における前記給気部の給気風量および前記第1の部屋における前記排気部の排気風量を増加させる制御、または前記排気部の排気風量を前記給気部の給気風量より大として前記第1の部屋の負圧を大きくする制御のうち少なくとも一方を行うこと、
を特徴とする請求項6に記載の換気システム。 - 前記空気汚染検知部は、室内にいる人の体温情報、室内にいる人の姿勢動作情報または室内にいる人の咳の発声情報を検出し、
前記制御部は、前記体温情報、前記姿勢動作情報および前記咳の発声情報のうちの少なくとも1つに基づいて、室内空気が汚染されていることを判定すること、
を特徴とする請求項6または7に記載の換気システム。 - 前記空気汚染検知部は、室内空気の二酸化炭素濃度の情報、室内空気における粉塵濃度の情報および室内空気の臭いの情報うち少なくとも1つに基づいて、室内空気が汚染されていることを判定すること、
を特徴とする請求項6または7に記載の換気システム。 - 前記第1の部屋の扉の開閉状態を検知する扉開閉検知部を備え、
前記制御部は、前記扉開閉検知部における検知結果に基づいて前記第1の部屋の扉が開いていると判断している間は、前記第1の部屋における前記排気部の排気風量を増加させて前記第1の部屋の負圧を大きくすること、
を特徴とする請求項1から9のいずれか1つに記載の換気システム。 - 前記第1の部屋における人の有無を検出する在人検知部を備え、
前記制御部は、前記在人検知部における検出結果に基づき、前記第1の部屋における在人人数に対応して、前記第1の部屋における前記排気部の排気風量を増加させて前記第1の部屋の負圧を大きくすること、
を特徴とする請求項1から10のいずれか1つに記載の換気システム。 - 熱交換器給気部により取り入れる室外空気と熱交換器排気部により排出する室内空気との間で熱交換を行う熱交換器とを備え、
前記給気部が、前記熱交換器給気部であり、
前記排気部が、前記熱交換器排気部であること、
を特徴とする請求項1から11のいずれか1つに記載の換気システム。 - 指示情報を入力可能な入力部を備え、
前記制御部は、
前記特定換気モードの設定または解除を設定可能な管理者を登録可能であり、
前記管理者から入力された前記特定換気モードの設定の指示を受信した場合に、前記特定換気モードの設定を行い、
前記管理者から入力された前記特定換気モードの解除の指示を受信した場合に、前記特定換気モードの解除を行うこと、
を特徴とする請求項1から11のいずれか1つに記載の換気システム。
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