WO2020218127A1 - 給気システム - Google Patents
給気システム Download PDFInfo
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- WO2020218127A1 WO2020218127A1 PCT/JP2020/016620 JP2020016620W WO2020218127A1 WO 2020218127 A1 WO2020218127 A1 WO 2020218127A1 JP 2020016620 W JP2020016620 W JP 2020016620W WO 2020218127 A1 WO2020218127 A1 WO 2020218127A1
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- WIPO (PCT)
- Prior art keywords
- fan
- air
- unit
- controller
- fans
- Prior art date
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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
- F24F3/001—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 in which the air treatment in the central station takes place by means of a heat-pump or by means of a reversible cycle
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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
- F24F11/70—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
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
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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
- F24F11/70—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
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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
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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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
- F24F2003/003—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 with primary air treatment in the central station and subsequent secondary air treatment in air treatment units located in or near the rooms
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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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
- 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
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- 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
- Air supply system that distributes the air supplied to the target space such as a room in the building by a duct
- Patent Document 1 Japanese Unexamined Patent Publication No. 2001-304614 discloses an air conditioning system including an air conditioner main body having a heat exchange coil and a fan unit having a fan for blowing heat exchanged air. Each fan unit of Patent Document 1 is connected to a plurality of air outlets via a duct, and the air heat-exchanged by one air conditioner main body is divided into the plurality of air outlets to supply air to the air conditioning zone.
- the controller of Patent Document 1 controls the rotation speeds of the pump motor of the pump unit whose flow rate can be adjusted to send the heat medium from the heat source to the heat exchange coil and the fan motors of a plurality of fan units. Sensors are provided at the plurality of outlets, and the controller controls the air volume of each fan and the heat medium flow rate of the heat exchange coil according to the fluctuation of the total value of the blow air volume signals of the sensors.
- the rotation speeds of the fan motors of the plurality of fan units are controlled by one controller provided outside the plurality of fan units.
- the controller of Patent Document 1 controls the rotation speed of the fan motor of each fan unit while checking the blowout air volume signals of a plurality of sensors provided at the plurality of outlets of each fan unit. Therefore, the control load of the controller of Patent Document 1 becomes large.
- An air supply system equipped with a fan unit capable of controlling the air volume has a problem of reducing the control load.
- the air supply system of the first viewpoint includes a first unit, a second unit, a duct, a first detection unit, and a first controller.
- the first unit has a first fan.
- the second unit has a second fan that supplies the first air to the target space.
- the duct conveys the first air sent from the first unit by the first fan to the second unit.
- the first detection unit detects the information of the second air in the target space.
- the first controller communicates with the second unit and the first detection unit.
- the second unit includes a second detection unit that detects the amount of air blown by the second fan, and a second controller that controls the rotation speed of the second fan.
- the first controller determines the target air volume of the second unit based on the information of the second air acquired from the first detection unit, and instructs the second controller of the target air volume.
- the second controller controls the rotation speed of the second fan so that the air volume detected by the second detection unit becomes the target air volume.
- the second unit receives the indicated value of the air volume from the first controller, and the second controller automatically controls the air volume by the second controller without depending on the first controller. be able to.
- the control load of the first controller can be reduced by appropriately giving an indicated value of the air volume to the first controller to the second unit.
- the air supply system of the second viewpoint is the system of the first viewpoint, and the first unit has a heat exchanger through which a heat medium flows.
- the heat exchanger exchanges heat between the first air delivered by the first fan and the heat medium.
- the first unit can exchange heat with the heat medium by the heat exchanger and send the air-conditioned first air to the second unit.
- the second unit can air-condition the target space by using the air-conditioned first air.
- the air supply system of the third viewpoint is the system of the second viewpoint
- the first detection unit is a temperature sensor, a CO 2 concentration sensor or a humidity sensor
- the first controller sets a preset target space.
- the target air volume of the second unit is determined based on the temperature, the set CO 2 concentration or the set humidity, and the value detected by the first detection unit.
- the first controller controls the air volume of the second unit according to the target air volume to keep at least one of the temperature, humidity and CO 2 concentration of the target space in an appropriate range. Can be controlled to.
- the air supply system of the fourth viewpoint is any system from the first viewpoint to the third viewpoint, which is arranged on the downstream side of the first unit and detects the pressure of the first air sent by the first fan.
- a third detection unit is further provided. The first controller controls the rotation speed of the first fan so that the pressure value acquired from the third detection unit falls within a predetermined range.
- the pressure value on the downstream side of the first unit falls within a predetermined range, so that the pressure value on the downstream side of the first unit deviates from the predetermined range.
- the extra power consumption generated by the first fan and the second fan can be omitted.
- the air supply system of the fifth viewpoint is any system from the first viewpoint to the fourth viewpoint, and includes a plurality of second units.
- the duct conveys the first air sent from the first unit by the first fan to the plurality of second units.
- a plurality of first detection units are provided corresponding to each of the plurality of second units.
- the first controller determines a plurality of target air volumes of the plurality of second units based on the information of the second air in the target space acquired from the plurality of first detection units, and instructs each second controller of each target air volume. ..
- the first controller can control the output of the first fan according to the amount of the first air supplied by the plurality of second fans. As a result, the air supply system can suppress power consumption.
- the air supply system of the sixth aspect is the system of the fifth aspect, in which the first controller is in the operating state of at least one second fan among the plurality of second fans or among the plurality of second fans.
- the first controller is in the operating state of at least one second fan among the plurality of second fans or among the plurality of second fans.
- priority is given to increasing the output of the fan-efficient fan among the first fan and the plurality of second fans, or decreasing the output of the fan with low fan efficiency. Give priority to that.
- the first controller preferentially increases the output of the fan with high fan efficiency among the first fan and the plurality of second fans, or decreases the output of the fan with low fan efficiency. Control. As a result, the energy consumption of the air supply system is suppressed.
- the air supply system of the seventh aspect is the system of the sixth aspect, in which the first controller has the highest fan efficiency among the plurality of second fans, but the processing static pressure is constant or a plurality of second.
- the output of the first fan is determined so that the fan speed of the two fans is the highest, but the fan speed is maximized.
- the first controller has the highest fan efficiency among the plurality of second fans, but the processing static pressure is constant, or the fan efficiency among the plurality of second fans is the highest.
- the output of the first fan is determined so that the fan speed is maximized although it is high.
- the output of the second fan which has low fan efficiency, can be preferentially reduced.
- the air supply system of the eighth viewpoint is a system of the sixth viewpoint, in which the first controller has the lowest fan efficiency among the plurality of second fans, but the processing static pressure is constant, or a plurality of second fans.
- the output of the first fan is determined so that the fan speed of the two fans, which has the lowest fan efficiency, is minimized.
- the first controller has the lowest fan efficiency among the plurality of second fans, but the processing static pressure is constant, or the fan efficiency among the plurality of second fans is the highest.
- the output of the first fan is determined so that the fan speed is minimized although it is low. As a result, the output of a fan with high fan efficiency can be increased preferentially.
- the air supply system of the ninth aspect is the system of the seventh aspect or the eighth aspect, and includes a plurality of differential pressure sensors for detecting the processing static pressure of a plurality of second fans, and the controller has a plurality of differences.
- the output of the first fan is determined based on the detected value of the pressure sensor.
- the air supply system of the tenth viewpoint is the system of the seventh viewpoint or the eighth viewpoint, and the first controller has the maximum fan efficiency among the plurality of second fans, but the air volume does not reach the target air volume. , Increase the output of the first fan.
- the first controller may increase the output of the first fan and control the air volume of the plurality of second fans having the maximum fan efficiency to reach the target air volume. it can.
- the air supply system of the eleventh viewpoint is any of the systems of the sixth to tenth viewpoints, and further includes a fourth detection unit for detecting the air volume of the first air sent by the first fan.
- the first controller uses at least one of the plurality of second detection units and the plurality of fourth detection units for comparing the fan efficiencies of the first fan and the plurality of second fans.
- the conceptual diagram which shows the structure of the air supply system which concerns on embodiment The conceptual diagram which shows an example of the structure of the air supply system which concerns on the modification.
- a block diagram for explaining the configuration of the controller The conceptual diagram which shows the other example of the structure of the air supply system which concerns on the modification.
- the air supply system 10 shown in FIG. 1 includes a first unit 20, a second unit 30, a duct 40, and a controller 50.
- the first unit 20 has a first fan 21.
- Each of the plurality of second units 30 has a second fan 31.
- Each second fan 31 supplies air from the second unit 30 to the target space 100.
- the target space 100 is, for example, a room in a building.
- a room is, for example, a space in which the movement of air is restricted by floors, ceilings and walls.
- a plurality of second units 30 are arranged with respect to one or a plurality of target spaces 100.
- FIG. 1 shows an example in which an air supply system 10 having two second units 30 is arranged with respect to one target space 100 as a typical example of an air supply system 10 having a plurality of second units 30. It is shown.
- the number of the second units 30 may be 3 or more, and is appropriately set.
- the target space 100 in which the second unit 30 is arranged may be two or more.
- the duct 40 distributes the first air SA sent from the first unit 20 by the first fan 21 to the plurality of second units 30.
- the duct 40 includes a main pipe 41 and a branch pipe 42 branched from the main pipe 41.
- FIG. 1 shows a case where the main pipe 41 is arranged outside the first unit 20, the main pipe 41 may be arranged inside the first unit 20 and may be arranged in the first unit 20. It may be arranged so as to extend from the inside to the outside of the first unit 20.
- a part of the casing of the first unit 20 may function as the main pipe 41.
- FIG. 1 shows an example in which the inlet 41a of the main pipe 41 is connected to the first unit 20.
- the first fan 21 is arranged in the first unit 20. Here, all the air blown out from the first fan 21 is configured to flow into the duct 40.
- the outlet 41b of the main pipe 41 of the duct 40 is connected to the inlet 42a of the branch pipe 42.
- the plurality of outlets 42b of the branch pipe 42 are connected to the plurality of second units 30.
- Each second unit 30 and the target space 100 are connected by a ventilation passage 81.
- the inlet 81a of the ventilation path 81 is connected to the second unit 30.
- Each second fan 31 generates an air flow from the outlet 42b of the duct 40 toward the inlet 81a of the ventilation passage 81 in the second unit 30. From another point of view, each second fan 31 sucks the first air SA from the outlet 42b of the branch pipe 42.
- Each second fan 31 can change the static pressure in each second unit 30 (in front of the inlet 81a of the ventilation passage 81) by changing the rotation speed.
- each of the second fans 31 increases the static pressure in each of the second units 30 (in front of the inlet 81a of the ventilation passage 81) by increasing the rotation speed. be able to.
- the static pressure in the second unit 30 becomes high, the amount of air in the first air SA flowing through the ventilation passage 81 increases.
- the amount of air supply air blown from the outlet 81b of each ventilation path 81 to the target space 100 changes.
- the controller 50 includes a main controller 51 and a plurality of sub-controllers 52.
- the main controller 51 and the plurality of sub-controllers 52 are connected to each other to form the controller 50.
- the main controller 51 controls the rotation speed of the first fan 21.
- the main controller 51 controls the output of the first fan 21.
- the state of the first fan 21 changes in the direction in which the amount of air blown by the first fan 21 increases.
- One sub-controller 52 is provided for each second unit 30. Each sub-controller 52 issues an instruction regarding the air volume change to the corresponding second fan 31. Each sub-controller 52 stores the target air volume. Each sub-controller 52 issues an instruction (instruction regarding changing the air volume) to increase the rotation speed of the second fan 31 if the supply air volume is insufficient with respect to the target air volume. On the contrary, if the supply air volume is excessive with respect to the target air volume, the sub controller 52 issues an instruction (instruction regarding changing the air volume) to reduce the rotation speed of the second fan 31.
- the controller 50 obtains information on the amount of air supplied to the target space 100 by the plurality of second fans 31.
- the information on the amount of air is, for example, the amount of air to be supplied to the target space 100 per second, and in other words, the amount of air to be supplied is the required amount of air supply.
- the required output of the first fan 21 is determined based on the obtained air amount information.
- the controller 50 controls the output of the first fan 21 so as to obtain the determined required output.
- each sub-controller 52 obtains information on the amount of air in the second unit 30 from the corresponding second unit 30.
- Each sub-controller 52 outputs information on the amount of air to the main controller 51.
- First unit 20 In addition to the first fan 21 described above, the first unit 20 includes a heat exchanger 22, a fourth detection unit 23, a temperature sensor 24, and a water amount adjusting valve 25.
- cold water or hot water is supplied to the heat exchanger 22 as a heat medium from the heat source unit 60.
- the heat medium supplied to the heat exchanger 22 may be something other than cold water or hot water, for example brine.
- the fourth detection unit 23 for example, an air volume sensor, a wind speed sensor, or a differential pressure sensor can be used.
- the fourth detection unit 23 detects the amount of air blown by the first fan 21.
- the fourth detection unit 23 is connected to the main controller 51.
- the value of the air volume detected by the fourth detection unit 23 is transmitted from the fourth detection unit 23 to the main controller 51.
- the air volume detected by the fourth detection unit 23 is the air volume flowing through the main pipe 41 of the duct 40.
- the air volume detected by the fourth detection unit 23 is the total amount of air supply air supplied from the plurality of second units 30 to the target space 100.
- the temperature sensor 24 detects the temperature of the first air SA sent from the first fan 21 to the duct 40.
- the temperature sensor 24 is connected to the main controller 51.
- the temperature value detected by the temperature sensor 24 is transmitted from the temperature sensor 24 to the main controller 51.
- the first unit 20 is connected to the target space 100 via the ventilation passage 82.
- the second air RA returned from the target space 100 through the ventilation passage 82 is sent out to the duct 40 through the heat exchanger 22 by the first fan 21.
- the second air RA returned from the target space 100 is the air that was in the target space 100.
- the returned second air RA exchanges heat with the cold water or hot water flowing through the heat exchanger 22 to become conditioned air.
- the amount of heat given to the first air SA that exchanges heat with the heat exchanger 22 and is sent to the duct 40 is adjusted by the water amount adjusting valve 25.
- the opening degree of the water amount adjusting valve 25 is controlled by the main controller 51.
- the opening degree of the water amount adjusting valve 25 increases, the amount of water flowing through the heat exchanger 22 increases, and the amount of heat exchanged between the heat exchanger 22 and the first air SA per unit time increases. On the contrary, when the opening degree of the water amount adjusting valve 25 becomes small, the amount of water flowing through the heat exchanger 22 decreases, and the amount of heat exchanged between the heat exchanger 22 and the first air SA per unit time decreases.
- the second unit 30 has a second detection unit 32 in addition to the second fan 31 already described.
- the second detection unit 32 detects the amount of air blown by the second fan 31.
- Each second detection unit 32 is connected to one corresponding sub-controller 52.
- the value of the air volume detected by the second detection unit 32 is transmitted to the sub controller 52.
- the air volume detected by the second detection unit 32 is the air volume flowing through the ventilation passage 81.
- the air volume detected by the second detection unit 32 is the air supply air volume supplied from each second unit 30 to the target space 100.
- an air volume sensor, a wind speed sensor, or a differential pressure sensor can be used for the second detection unit 32.
- the plurality of remote sensors 70 have a function of a temperature sensor. Each remote sensor 70 is configured to transmit data indicating the temperature of the second air RA in the target space 100 to the corresponding sub-controller 52.
- Each of the plurality of sub-controllers 52 receives the detected temperature value of the target space from the connected remote sensor 70.
- Each sub-controller 52 holds data indicating the set temperature. For example, data indicating the set temperature is transmitted in advance to each sub-controller 52 from a remote controller (not shown) or the like.
- Each sub-controller 52 stores data indicating a set temperature received from a remote controller or the like in a storage device 52b (see FIG. 3) such as a built-in memory.
- Each sub-controller 52 transmits a set temperature value to the main controller 51.
- the main controller 51 determines the target air volume of each second unit 30 according to the temperature of the second air RA detected by the corresponding remote sensor 70 based on the set temperature.
- the main controller 51 transmits the value of the target air volume to each sub controller 52.
- the main controller 51 determines the output of the first fan 21 according to the total amount of the target air volume to be supplied to the target space 100.
- the static pressure at the outlet 41b of the main pipe 41 (the inlet 42a of the branch pipe 42) takes an intermediate value between the static pressure at the inlet 41a of the main pipe 41 and the static pressure at the outlet 42b of the branch pipe 42, and from the intermediate value. Comparing with the case where the value is large, the ratio of the output of the first fan 21 is larger than the ratio of the output of the plurality of second fans 31 when the value is larger than the intermediate value. On the contrary, when the static pressure at the outlet 41b of the main pipe 41 (the inlet 42a of the branch pipe 42) takes an intermediate value and a value smaller than the intermediate value, the case where the static pressure takes a smaller value is compared.
- the output ratio of the first fan 21 is smaller than the output ratio of the plurality of second fans 31. There is an efficient range in the ratio of the output of the first fan 21 to the output of the plurality of second fans 31. Therefore, the main controller 51 determines the output of the first fan 21 so as to have an efficient ratio. In other words, it means that the main controller 51 determines the output of the first fan 21 at a predetermined appropriate output with respect to the total amount of the target air volume.
- the output of the first fan 21 has an output range of the first fan 21 suitable for reducing power consumption. If the output of the first fan 21 is increased to increase the total power consumption of the first fan 21 and the plurality of second fans 31, the output of the first fan 21 is gradually decreased to increase the output of the first fan 21 and the plurality of second fans. If the total power consumption of the two fans 31 is determined to be the output of the first fan 21 before it starts to rise again, the determined output range becomes a range in which the power consumption is smaller than the other ranges.
- the output of the first fan 21 is lowered to increase the total power consumption of the first fan 21 and the plurality of second fans 31, the output of the first fan 21 is gradually increased to increase the output of the first fan 21 and the first fan 21. If the total power consumption of the plurality of second fans 31 is determined to be the output of the first fan 21 before it starts to rise again, the determined output range becomes a range in which the power consumption is smaller than the other ranges. If the output of the first fan 21 is increased and the total power consumption of the first fan 21 and the plurality of second fans 31 is decreased, the output of the first fan 21 is gradually increased to decrease the output of the first fan 21 and the plurality of second fans.
- the determined output range becomes a range in which the power consumption is smaller than the other ranges.
- the output of the first fan 21 is lowered and the total power consumption of the first fan 21 and the plurality of second fans 31 is lowered, the output of the first fan 21 is gradually lowered, and the first fan 21 and If the total power consumption of the plurality of second fans 31 is determined to be the output of the first fan 21 before it starts to rise again, the determined output range becomes a range in which the power consumption is smaller than the other ranges.
- determining an appropriate output of the first fan 21 is not limited to such a method.
- each second unit 30 other than the second unit 30 having the highest fan efficiency is seconded by the corresponding sub controller 52.
- the rotation speed of the fan 31 is adjusted.
- the rotation speeds of the plurality of second fans 31 are adjusted independently of each other.
- the rotation speed of the second fan 31 of the second unit 30 having the highest fan efficiency is maximized.
- the second unit 30 having the highest fan efficiency is the second unit 30 having the smallest energy consumption when the static pressure at the inlet 42a of the branch pipe 42 is the same and the amount of air supplied to the target space 100 is the same. is there.
- the second unit 30 having the lowest fan efficiency is the second unit 30 having the largest energy consumption when the static pressure at the inlet 42a of the branch pipe 42 is the same and the amount of air supplied to the target space 100 is the same. ..
- Each sub-controller 52 controls the rotation speed of each second fan 31 in order to match the supply air volume with the target air volume.
- the plurality of sub-controllers 52 control the rotation speeds of the plurality of second fans 31 independently of each other. If the air volume detected by the second detection unit 32 is smaller than the target air volume, each sub-controller 52 increases the rotation speed of each second fan 31. If the air volume detected by the second detection unit 32 is larger than the target air volume, each sub-controller 52 reduces the rotation speed of each second fan 31. If the rotation speed of the second unit 30 having the highest fan efficiency drops, the main controller 51 changes the output of the first fan 21 to maximize the rotation speed of the second unit 30 having the highest fan efficiency. Adjust so that
- the main controller 51 uses the operating state of at least one second fan among the plurality of second fans 31 or the air volume of at least one second fan 31 among the plurality of second fans 31.
- priority is given to increasing the output of the fan having high fan efficiency among the first fan 21 and the plurality of second fans 31, or giving priority to decreasing the output of the fan having low fan efficiency.
- the main controller 51 increases the output of the fan with high fan efficiency among the first fan 21 and the plurality of second fans 31 when increasing the amount of air supplied to the target space 100.
- the output of one fan 21 and the target air volume of the plurality of second units 30 are determined.
- the main controller 51 reduces the output of the fan having high fan efficiency among the first fan 21 and the plurality of second fans 31.
- the output of one fan 21 and the target air volume of the plurality of second units 30 are determined.
- the main controller 51 increases the output of the first fan 21 when the air volume of the plurality of second units 30 having the maximum fan efficiency does not reach the target air volume. At this time, the main controller 51 increases the output of the first fan 21 and keeps the rotation speed of the second fan 31 of the second unit 30 having the maximum fan efficiency at the maximum.
- the main controller 51 determines the output of the first fan 21
- the main controller 51 uses the first fan 21 so that the rotation speed of the plurality of second fans 31 having the lowest fan efficiency is minimized. It may be configured to determine the output of.
- the corresponding sub-controller 52 adjusts the rotation speed of the second fan 31. The rotation speeds of the plurality of second fans 31 are adjusted independently of each other.
- each second unit 30 has a differential pressure sensor 33 for detecting the processing static pressure of the second fan 31 (see FIG. 2). Is configured to include.
- the controller 50 is configured to calculate the processing static pressure from the detection result of the second detection unit 32 and the rotation speed of the second fan 31.
- the controller 50 determines the output of the first fan 21 based on the detection value of the differential pressure sensor 33 of the second unit 30 having the highest fan efficiency.
- the corresponding sub-controller 52 adjusts the rotation speed of the second fan 31.
- the rotation speeds of the plurality of second fans 31 are adjusted independently of each other.
- each second unit 30 has a differential pressure sensor 33 for detecting the processing static pressure of the second fan 31 (see FIG. 2). Is configured to include.
- the controller 50 is configured to calculate the processing static pressure from the detection result of the second detection unit 32 and the rotation speed of the second fan 31.
- the controller 50 determines the output of the first fan 21 based on the detection value of the differential pressure sensor 33 of the second unit 30 having the lowest fan efficiency.
- the corresponding sub-controller 52 adjusts the rotation speed of the second fan 31.
- the rotation speeds of the plurality of second fans 31 are adjusted independently of each other.
- the remote sensor 70 may have at least one function of, for example, a temperature sensor, a CO 2 concentration sensor, and a humidity sensor. ..
- the plurality of sub-controllers 52 receive at least one detected value of the temperature, CO 2 concentration, and humidity of the target space 100 from the connected remote sensor 70, respectively.
- Each sub-controller 52 holds data of set values to be detected by the remote sensor 70.
- Each sub-controller 52 transmits at least one set value of these temperature, CO 2 concentration and humidity to the main controller 51.
- the main controller 51 determines the target air volume of each second unit 30 based on the set value according to the detection value of the corresponding remote sensor 70.
- the main controller 51 transmits the value of the target air volume to each sub controller 52.
- the air supply system 10 may be configured as a system that ventilates the target space 100, for example, when the CO 2 concentration in the target space 100 is high.
- the controller 50 is realized by a computer.
- the controller 50 includes control arithmetic units 51a and 52a and storage devices 51b and 52b.
- a processor such as a CPU or GPU can be used for the control arithmetic units 51a and 52a.
- the control arithmetic units 51a and 52a read the programs stored in the storage devices 51b and 52b, and perform predetermined image processing and arithmetic processing according to the programs. Further, the control arithmetic units 51a and 52a can write the arithmetic results in the storage devices 51b and 52b and read the information stored in the storage devices 51b and 52b according to the program.
- FIG. 3 shows various functional blocks realized by the control arithmetic units 51a and 52a.
- the storage devices 51b and 52b can be used as a database.
- the outside air introduction unit 110 may be attached to the first unit 20.
- the outside air introduction unit 110 has a third fan 111 and a fifth detection unit 112.
- the outside air introduction unit 110 takes in the outside air OA from the outside of the target space 100 by the third fan 111 and blows it to the first unit 20.
- the fifth detection unit 112 detects the air volume of the outside air OA sent to the first unit 20.
- the fifth detection unit 112 transmits the value of the detected air flow amount of the outside air OA to the main controller 51.
- the main controller 51 may be configured to correct the output control of the first fan 21 according to the amount of air blown by the outside air OA. ..
- an air volume sensor, a wind speed sensor, or a differential pressure sensor can be used.
- a third detection unit is located on the downstream side of the first unit 20 of the air supply system 10 according to the embodiment shown in FIG.
- the pressure sensor 90 is arranged.
- the pressure sensor 90 detects the pressure of the first air SA sent by the first fan 21.
- the pressure sensor 90 is arranged, for example, in the vicinity of the first unit 20 in the duct 40, in other words, in the vicinity of the inlet 41a of the duct 40.
- the configuration other than the pressure sensor 90 is the same as that of the air supply system 10 of the above embodiment, and thus the description thereof will be omitted.
- the main controller 51 acquires the value of the pressure of the first air SA detected by the pressure sensor 90.
- the main controller 51 controls the rotation speed of the first fan 21 so that the pressure value of the first air SA falls within a predetermined range. If the pressure value of the first air SA is smaller than the lower limit value in the predetermined range, the main controller 51 increases the rotation speed of the first fan 21. If the value of the pressure of the first air SA is larger than the upper limit value in the predetermined range, the main controller 51 reduces the rotation speed of the first fan 21.
- a pressure sensor 90 which is a third detection unit, is arranged on the downstream side of the first unit 20 of the air supply system 10 according to the modified example 1E shown in FIG. May be good.
- the configuration of the controller 50 of FIG. 6 is shown in FIG.
- the air supply system 10 described above includes the first unit 20, the second unit 30, the duct 40, the remote sensor 70 which is the first detection unit, and the first unit and the main controller 51 which is the first controller.
- the second unit 30 has a second fan 31 that supplies the first air SA to the target space 100.
- the duct 40 conveys the first air SA sent from the first unit 20 by the first fan 21 to the second unit 30.
- the remote sensor 70 detects the information of the second air RA in the target space 100.
- the information of the second air RA is, for example, the temperature of the second air RA, the CO 2 concentration of the second air RA, or the humidity of the second air RA.
- the main controller 51 communicates with the second unit 30 and the remote sensor 70.
- the second unit 30 includes a second detection unit 32, which is a second detection unit that detects the amount of air blown by the second fan 31, and a sub controller 52, which is a second controller that controls the rotation speed of the second fan. I'm out.
- the main controller 51 determines the target air volume of the second unit 30 based on the information of the second air RA acquired from the remote sensor 70, for example, the temperature detection value, the CO 2 concentration detection value, or the humidity detection value.
- the main controller 51 instructs the sub controller 52 of the determined target air volume.
- the sub-controller 52 controls the rotation speed of the second fan 31 so that the air volume detected by the second detection unit 32 becomes the target air volume.
- the second unit 30 receives the indicated value of the air volume from the main controller 51, and the sub controller 52 controls the air volume by the second unit 30 itself without depending on the main controller 51. Can be done automatically. In this way, the instruction value of the air volume may be appropriately given to the second unit 30 from the main controller 51, and the control load of the main controller 51 can be reduced.
- the first unit 20 can exchange heat with the heat medium by the heat exchanger 22 and send the air-conditioned air to the plurality of second units 30.
- the plurality of second units 30 can use this air-conditioned air to air-condition the target space 100.
- the controller 50 of the air supply system 10 described above determines the air volume of the air supplied by the plurality of second units 30 according to at least one of the temperature, humidity and CO 2 concentration of the target space 100, and determines the air volume of the air supplied by the plurality of second units 30.
- the air volume of each of the two units 30 is controlled.
- the controller 50 controls the air volume of each of the plurality of second units 30 to set at least one of the temperature, humidity, and CO 2 concentration of the target space 100 to an appropriate range. Can be kept.
- the air supply system 10 includes a pressure sensor 90 which is arranged on the downstream side of the first unit 20 and is a third detection unit for detecting the pressure of the first air SA sent by the first fan 21. ing.
- the main controller 51 controls the rotation speed of the first fan 21 so that the value of the pressure acquired from the pressure sensor 90 falls within a predetermined range.
- the pressure value on the downstream side of the first unit 20 is in a predetermined range, so that the pressure value on the downstream side of the first unit 20 is out of the predetermined range, as compared with the case where the first fan 21 and the downstream side are out of the predetermined range.
- the extra power consumption generated by the second fan 31 can be omitted.
- the main controller 51 can control the output of the first fan 21 to an appropriate value according to the total amount of air supply air with respect to the target space 100.
- the total amount of air supply air is an example of the amount of air in the first air SA of the plurality of second fans 31.
- the main controller 51 changes the operating state of at least one of the plurality of second fans 31 or the air volume of at least one second fan 31 of the plurality of second fans 31. When doing so, it is configured to give priority to increasing the output of the fan having high fan efficiency among the first fan 21 and the plurality of second fans 31, or to give priority to decreasing the output of the fan having low fan efficiency. Can be done. In the air supply system 10 configured in this way, the main controller 51 controls the output of the fan having high fan efficiency to be preferentially increased or decreased to decrease the output of the fan having low fan efficiency. Reduce energy consumption.
- the main controller 51 makes the processing static pressure of the second fan 31 having the highest fan efficiency among the plurality of second fans 31 constant, or among the plurality of second fans 31.
- the output of the second fan 31 having the lowest fan efficiency can be preferentially reduced.
- the main controller 51 makes the processing static pressure of the second fan 31 having the lowest fan efficiency among the plurality of second fans 31 constant, or among the plurality of second fans 31.
- the output of the fan with high fan efficiency can be preferentially increased. it can.
- the energy consumption is reduced as compared with the case of increasing the output of the second fan 31 having a lower fan efficiency. Can be done.
- the main controller 51 increases the output of the first fan 21 when the air volume of the plurality of second fans 31 having the maximum fan efficiency does not reach the target air volume. In the air supply system 10 configured in this way, the main controller 51 increases the output of the first fan 21 so that the air volume of the plurality of second fans 31 having the maximum fan efficiency reaches the target air volume. Can be controlled to.
- Air supply system 20 1st unit 21 1st fan 22 Heat exchanger 23 4th detector 30 2nd unit 31 2nd fan 32 2nd detector 33 Differential pressure sensor 40 Duct 50 controller 51 Main controller (1st controller Example) 52 Sub controller (example of second controller) 70 Remote sensor (example of 1st detector) 90 Pressure sensor (example of 3rd detector)
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Abstract
Description
図1に示されている給気システム10は、第1ユニット20と、第2ユニット30と、ダクト40と、コントローラ50とを備えている。第1ユニット20は、第1ファン21を有する。複数の第2ユニット30は、それぞれ、第2ファン31を有する。各第2ファン31は、空気を第2ユニット30から対象空間100に供給する。対象空間100は、例えば、建物内の部屋である。部屋は、例えば、床、天井及び壁によって空気の移動が制限された空間である。1つまたは複数の対象空間100に対して、複数の第2ユニット30が配設される。図1には、複数の第2ユニット30を備える給気システム10の代表例として、2つの第2ユニット30を備える給気システム10が1つの対象空間100に対して配設されている例が示されている。第2ユニット30の個数は、3以上であってもよく、適宜設定されるものである。先にも述べたが、第2ユニット30が配設される対象空間100は、2以上であってもよい。
(2-1)第1ユニット20
第1ユニット20は、既に説明した第1ファン21以外に、熱交換器22、第4検知部23、温度センサ24及び水量調整弁25を有している。熱交換器22には、熱源ユニット60から熱媒体として例えば冷水または温水が供給される。熱交換器22に供給される熱媒体は、冷水または温水以外のもの、例えばブラインであってもよい。第4検知部23には、例えば、風量センサ、風速センサまたは差圧センサを用いることができる。
第2ユニット30は、既に説明した第2ファン31以外に、第2検知部32を有している。第2検知部32は、第2ファン31が送風する風量を検知する。各第2検知部32は、対応する1つのサブコントローラ52に接続されている。第2検知部32が検知した風量の値は、サブコントローラ52に送信される。第2検知部32が検知した風量は、通風路81を流れる風量である。言い換えると、第2検知部32が検知した風量は、各第2ユニット30から対象空間100に供給される給気風量になる。第2検知部32には、例えば、風量センサ、風速センサまたは差圧センサを用いることができる。
複数のリモートセンサ70は、温度センサの機能を有している。各リモートセンサ70は、対応するサブコントローラ52に、対象空間100の第2空気RAの温度を示すデータを送信できるように構成されている。
複数のサブコントローラ52は、それぞれ、接続されているリモートセンサ70から、検知した対象空間の温度の値を受信する。各サブコントローラ52は、設定温度を示すデータを保持している。例えば、リモートコントローラ(図示せず)などから、各サブコントローラ52に設定温度を示すデータが予め送信される。各サブコントローラ52は、リモートコントローラなどから受信した設定温度を示すデータを内蔵するメモリなどの記憶装置52b(図3参照)に記憶している。各サブコントローラ52が設定温度の値をメインコントローラ51に送信する。メインコントローラ51は、設定温度に基づき、対応するリモートセンサ70の検知した第2空気RAの温度に応じて、各第2ユニット30の目標風量を決定する。メインコントローラ51は、目標風量の値を各サブコントローラ52に送信する。
このとき、決定された第1ファン21の出力において、ファン効率が最も高い第2ユニット30の第2ファン31の回転数が最大になっている。ここで、ファン効率が最も高い第2ユニット30は、枝管42の入口42aの静圧が同じで対象空間100に供給する給気風量が同じ場合に、消費エネルギーが最も小さい第2ユニット30である。また、ファン効率が最も低い第2ユニット30は、枝管42の入口42aの静圧が同じで対象空間100に供給する給気風量が同じ場合に、消費エネルギーが最も大きい第2ユニット30である。
(4-1)変形例1A
上記実施形態では、メインコントローラ51が第1ファン21の出力を決定する際、メインコントローラ51は、複数の第2ファン31のうちのファン効率が最も高いものの回転数が最大となるように決定する場合について説明した。
上記実施形態では、リモートセンサ70が温度センサを有する場合について説明したが、リモートセンサ70は、例えば、温度センサ、CO2濃度センサ及び湿度センサのうちの少なくとも1つの機能持つものであってもよい。このように構成された場合、複数のサブコントローラ52は、それぞれ、接続されているリモートセンサ70から、対象空間100の温度、CO2濃度及び湿度のうちの少なくとも1つの検知値を受信する。各サブコントローラ52は、リモートセンサ70の検知対象の設定値のデータを保持している。各サブコントローラ52が、これら温度、CO2濃度及び湿度のうちの少なくとも1つの設定値をメインコントローラ51に送信する。メインコントローラ51は、設定値に基づき、対応するリモートセンサ70の検知値に応じて、各第2ユニット30の目標風量を決定する。メインコントローラ51は、目標風量の値を各サブコントローラ52に送信する。
上記実施形態では、第1ユニット20が熱交換器22を有している場合について説明した。しかし、第1ユニット20は、熱交換器22を構成しない形態をとることもできる。給気システム10は、例えば、対象空間100のCO2濃度が高いときに、対象空間100を換気するシステムとして構成されてもよい。
コントローラ50はコンピュータにより実現されるものである。コントローラ50は、制御演算装置51a,52aと記憶装置51b,52bとを備える。制御演算装置51a,52aには、CPU又はGPUといったプロセッサを使用できる。制御演算装置51a,52aは、記憶装置51b,52bに記憶されているプログラムを読み出し、このプログラムに従って所定の画像処理や演算処理を行う。さらに、制御演算装置51a,52aは、プログラムに従って、演算結果を記憶装置51b,52bに書き込んだり、記憶装置51b,52bに記憶されている情報を読み出したりすることができる。図3は、制御演算装置51a,52aにより実現される各種の機能ブロックを示している。記憶装置51b,52bは、データベースとして用いることができる。
第1ユニット20には、図4に示されているように、外気導入ユニット110が取り付けられてもよい。外気導入ユニット110は、第3ファン111及び第5検知部112を有している。外気導入ユニット110は、第3ファン111により、対象空間100の外から外気OAを取り入れて第1ユニット20に送風する。第5検知部112は、第1ユニット20に送られる外気OAの風量を検知する。第5検知部112は、検知した外気OAの送風量の値をメインコントローラ51に送信する。外気導入ユニット110から外気OAが第1ユニット20に送られる場合に、メインコントローラ51は、第1ファン21の出力の制御について外気OAの送風量に応じた補正を行うように構成されてもよい。第5検知部112には、例えば、風量センサ、風速センサまたは差圧センサを用いることができる。
変形例1Fに係る給気システム10には、図5に示されているように、図1に示された実施形態に係る給気システム10の第1ユニット20の下流側に、第3検知部である圧力センサ90が配置されている。この圧力センサ90は、第1ファン21により送出された第1空気SAの圧力を検知する。圧力センサ90は、例えば、ダクト40の中の第1ユニット20の近傍、言い換えるとダクト40の入口41aの近傍に配置される。この圧力センサ90以外の構成は、上記実施形態の給気システム10と同様であるので、説明を省略する。メインコントローラ51は、圧力センサ90が検知した第1空気SAの圧力の値を取得する。メインコントローラ51は、第1空気SAの圧力の値が所定の範囲になるように、第1ファン21の回転数を制御する。メインコントローラ51は、第1空気SAの圧力の値が所定の範囲の下限値よりも小さければ、第1ファン21の回転数を増加させる。メインコントローラ51は、第1空気SAの圧力の値が所定の範囲の上限値よりも大きければ、第1ファン21の回転数を減少させる。
(5-1)
以上説明した給気システム10は、第1ユニット20と、第2ユニット30と、ダクト40と、第1検知部であるリモートセンサ70と、第1ユニット、第1コントローラであるメインコントローラ51とを備えている。第2ユニット30は、第1空気SAを対象空間100に供給する第2ファン31を有している。ダクト40は、第1ユニット20から第1ファン21により送出された第1空気SAを第2ユニット30に搬送する。リモートセンサ70は、対象空間100の第2空気RAの情報を検知する。第2空気RAの情報は、例えば、第2空気RAの温度、第2空気RAのCO2濃度または第2空気RAの湿度である。メインコントローラ51は、第2ユニット30及びリモートセンサ70と通信を行う。第2ユニット30は、第2ファン31が送風する風量を検知する第2検知部である第2検知部32と、第2ファンの回転数を制御する第2コントローラであるサブコントローラ52とを含んでいる。メインコントローラ51は、リモートセンサ70から取得した第2空気RAの情報である例えば温度の検出値、CO2濃度の検出値または湿度の検出値に基づき、第2ユニット30の目標風量を決定する。メインコントローラ51は、決定した目標風量をサブコントローラ52に指示する。サブコントローラ52は、第2検知部32により検知された風量が、目標風量になるように、第2ファン31の回転数を制御する。
上記実施形態の給気システム10では、第1ユニット20が、熱交換器22で熱媒体と熱交換して、空気調和された空気を複数の第2ユニット30に送ることができる。複数の第2ユニット30は、この空気調和された空気を用いて、対象空間100の空気調和ができる。
上述の給気システム10のコントローラ50は、対象空間100の温度、湿度及びCO2濃度のうちの少なくとも一つ応じて複数の第2ユニット30により供給される空気の風量を決定し、複数の第2ユニット30のそれぞれの風量を制御している。このような給気システム10では、コントローラ50より、複数の第2ユニット30のそれぞれの風量を制御して、対象空間100の温度、湿度及びCO2濃度のうちの少なくとも一つを適正な範囲に保つことができる。
変形例1Fに係る給気システム10では、第1ユニット20の下流側に配置され、第1ファン21により送出された第1空気SAの圧力を検知する第3検知部である圧力センサ90を備えている。メインコントローラ51は、圧力センサ90から取得した圧力の値が所定の範囲になるように、第1ファン21の回転数を制御する。その結果、第1ユニット20の下流側の圧力の値が所定の範囲になることにより、第1ユニット20の下流側の圧力の値が所定の範囲から外れる場合に比べて、第1ファン21及び第2ファン31で発生する余分な費電力を省くことができる。
上述の給気システム10では、メインコントローラ51が、第1ファン21の出力を対象空間100に対する給気風量の総量に合わせて適正な値に制御することができる。給気風量の総量が、複数の第2ファン31の第1空気SAの空気量の一例である。メインコントローラ51のこのような制御により、給気システム10は、システム全体としての消費エネルギーを抑制することができる。
上述の給気システム10は、メインコントローラ51が、複数の第2ファン31の中の少なくとも1台の運転状態または複数の第2ファン31の中の少なくとも1台の第2ファン31の風量を変更するときには、第1ファン21及び複数の第2ファン31の中のファン効率の高いファンの出力を増やすことを優先するかまたはファン効率の低いファンの出力を減らすことを優先するように構成することができる。このように構成された給気システム10では、メインコントローラ51が、ファン効率の高いファンの出力を優先的に増やし、またはファン効率の低いファンの出力を減らすよう制御して、給気システム10の消費エネルギーを抑制する。
上述の給気システム10は、メインコントローラ51が、複数の第2ファン31の中のファン効率が最も高い第2ファン31の処理静圧が一定になるように若しくは複数の第2ファン31の中のファン効率が最も高い第2ファン31のファン回転数が最大になるように、第1ファン21の出力を決めることで、ファン効率の低い第2ファン31の出力を優先的に減らせるように構成することができる。このように構成する場合には、ファン効率の低い第2ファン31の出力を優先的に減らした結果、ファン効率のより高い第2ファン31の出力を減らす場合に比べて消費エネルギーを削減することができる。
上述の給気システム10は、メインコントローラ51が、複数の第2ファン31の中のファン効率が最も低い第2ファン31の処理静圧が一定になるように若しくは複数の第2ファン31の中のファン効率が最も低い第2ファン31のファン回転数が最小になるように、第1ファン21の出力を決めることで、ファン効率の高いファンの出力を優先的に増やせるように構成することができる。このように構成する場合には、ファン効率の高い第2ファン31の出力を優先的に増やした結果、ファン効率のより低い第2ファン31の出力を増やす場合に比べて消費エネルギーを削減することができる。
上述の給気システム10では、メインコントローラ51は、複数の第2ファン31の中のファン効率が最大のものの風量が目標風量に達しない場合に、第1ファン21の出力を増加させる。このように構成された給気システム10では、メインコントローラ51が、第1ファン21の出力を増加させて、複数の第2ファン31の中のファン効率が最大のものの風量が目標風量に達するように制御することができる。
20 第1ユニット
21 第1ファン
22 熱交換器
23 第4検知部
30 第2ユニット
31 第2ファン
32 第2検知部
33 差圧センサ
40 ダクト
50 コントローラ
51 メインコントローラ (第1コントローラの例)
52 サブコントローラ (第2コントローラの例)
70 リモートセンサ (第1検知部の例)
90 圧力センサ(第3検知部の例)
Claims (11)
- 第1ファン(21)を有する第1ユニット(20)と、
第1空気を対象空間に供給する第2ファン(31)を有する第2ユニット(30)と、
前記第1ユニットから前記第1ファンにより送出された前記第1空気を前記第2ユニットに搬送するダクト(40)と、
前記対象空間の第2空気の情報を検知する第1検知部(70)と、
前記第1ユニット、前記第2ユニット及び前記第1検知部と通信を行う第1コントローラ(51)と、
を備え、
前記第2ユニットは、前記第2ファンが送風する風量を検知する第2検知部(32)と、前記第2ファンの回転数を制御する第2コントローラ(52)とを含み、
前記第1コントローラは、前記第1検知部から取得した前記第2空気の情報に基づき、前記第2ユニットの目標風量を決定し、前記目標風量を前記第2コントローラに指示し、
前記第2コントローラは、前記第2検知部により検知された風量が、前記目標風量になるように、前記第2ファンの回転数を制御する、給気システム(10)。 - 前記第1ユニットは、熱媒体の流れる熱交換器(22)を有し、
前記熱交換器は、前記第1ファンにより送出される前記第1空気と前記熱媒体との間で熱交換を行う、
請求項1に記載の給気システム(10)。 - 前記第1検知部は、温度センサ、CO2濃度センサまたは湿度センサであり、
前記第1コントローラは、予め設定された対象空間の設定温度、設定CO2濃度または設定湿度と、前記第1検知部によって検知された値とに基づき、前記第2ユニットの前記目標風量を決定する、
請求項2に記載の給気システム(10)。 - 前記第1ユニットの下流側に配置され、前記第1ファンにより送出された前記第1空気の圧力を検知する第3検知部をさらに備え、
前記第1コントローラは、前記第3検知部から取得した圧力の値が所定の範囲になるように、前記第1ファンの回転数を制御する、
請求項1から3のいずれか一項に記載の給気システム(10)。 - 前記第2ユニットを複数備え、
前記ダクトは、前記第1ユニットから前記第1ファンにより送出される前記第1空気を複数の前記第2ユニットに搬送し、
前記第1検知部は、複数の前記第2ユニットそれぞれに対応して複数設けられ、
前記第1コントローラは、複数の前記第1検知部から取得した前記対象空間の前記第2空気の情報に基づき、複数の前記第2ユニットの複数の前記目標風量を決定し、前記各第2コントローラに前記各目標風量を指示する、
請求項1から4のいずれか一項に記載の給気システム(10)。 - 前記第1コントローラが、複数の前記第2ファンの中の少なくとも1台の前記第2ファンの運転状態または複数の前記第2ファンの中の少なくとも1台の前記第2ファンの風量を変更するときには、前記第1ファン及び複数の前記第2ファンの中のファン効率の高いファンの出力を増やすことを優先するかまたはファン効率の低いファンの出力を減らすことを優先する、
請求項5に記載の給気システム(10)。 - 前記第1コントローラが、複数の前記第2ファンの中のファン効率が最も高いものの処理静圧が一定になるように若しくは複数の前記第2ファンの中のファン効率が最も高いもののファン回転数が最大になるように、前記第1ファンの出力を決める、
請求項6に記載の給気システム(10)。 - 前記第1コントローラが、複数の前記第2ファンの中のファン効率が最も低いものの処理静圧が一定になるように若しくは複数の前記第2ファンの中のファン効率が最も低いもののファン回転数が最小になるように、前記第1ファンの出力を決める、
請求項6に記載の給気システム(10)。 - 複数の前記第2ファンの処理静圧を検知するための複数の差圧センサ(33)を備え、
前記第1コントローラが、複数の前記差圧センサの検出値に基づいて前記第1ファンの出力を決める、
請求項7または8に記載の給気システム(10)。 - 前記第1コントローラは、複数の前記第2ファンの中のファン効率が最大のものの風量が前記目標風量に達しない場合に、前記第1ファンの出力を増加させる、
請求項7または請求項8に記載の給気システム(10)。 - 前記第1ファンにより送出される前記第1空気の風量を検知するための第4検知部(23)をさらに備え、
前記第1コントローラが、前記第1ファン及び複数の前記第2ファンのファン効率の比較に、複数の前記第2検知部及び前記第4検知部のうちの少なくとも一方を用いる、
請求項6から9のいずれか一項に記載の給気システム(10)。
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AU2020261812B2 (en) | 2022-12-22 |
ES2955485T3 (es) | 2023-12-01 |
AU2020261812A1 (en) | 2021-12-09 |
EP3957926A4 (en) | 2022-06-22 |
US20220214071A1 (en) | 2022-07-07 |
CN113692516B (zh) | 2023-04-04 |
US12320539B2 (en) | 2025-06-03 |
EP3957926A1 (en) | 2022-02-23 |
CN113692516A (zh) | 2021-11-23 |
EP3957926B1 (en) | 2023-06-14 |
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