WO2022215252A1 - 空気調和システム、床吹出し式空気調和装置、制御方法、及びプログラム - Google Patents
空気調和システム、床吹出し式空気調和装置、制御方法、及びプログラム Download PDFInfo
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- WO2022215252A1 WO2022215252A1 PCT/JP2021/015024 JP2021015024W WO2022215252A1 WO 2022215252 A1 WO2022215252 A1 WO 2022215252A1 JP 2021015024 W JP2021015024 W JP 2021015024W WO 2022215252 A1 WO2022215252 A1 WO 2022215252A1
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- temperature
- space
- indoor unit
- floor
- blowing
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims description 9
- 238000007664 blowing Methods 0.000 claims abstract description 81
- 238000010438 heat treatment Methods 0.000 description 29
- 239000003507 refrigerant Substances 0.000 description 29
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010016334 Feeling hot Diseases 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0227—Ducting arrangements using parts of the building, e.g. air ducts inside the floor, walls or ceiling of a building
-
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
-
- 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
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
-
- 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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/40—HVAC with raised floors
Definitions
- the present invention relates to an air conditioning system, a floor exhaust type air conditioner, a control method, and a program.
- the temperature around the feet is more than 3[°C] lower than the temperature around the head as comfortable thermal environment conditions. It is recommended to create an environment where the temperature does not rise.
- the temperature difference between the area around the head and the area around the feet (hereinafter referred to as "upper and lower temperature difference”) often exceeds the recommended range of 3[°C]. .
- the temperature difference between the upper and lower sides is large and the temperature around the feet is relatively too low, which may make people in the room feel cold and uncomfortable.
- the person in the room may change the set temperature of the air conditioner to a higher temperature. In such an environment, a change to a higher set temperature causes excessive heating operation and wastes energy.
- Patent Document 1 Conventionally, there is a technique described in Patent Document 1, for example, as a technique for improving comfort by reducing the upper and lower temperature difference in a space.
- the air conditioning system described in Patent Document 1 includes a floor blowing air conditioner that blows conditioned air upward from a plurality of floor outlets provided on the floor surface of a living room, and a perimeter that blows conditioned air along windows provided on the side walls. air conditioners are controlled by a control device in cooperation with each other. With such a configuration, the air conditioning system described in Patent Document 1 increases the cooling output of the perimeter air conditioner according to the temperature rise in the living room, thereby decreasing the cooling output of the floor blowing air conditioner. reduce the temperature difference between the top and bottom of the
- the air-conditioning system described in Patent Document 1 is an air-conditioning system for cooling the living room.
- it is during heating, not cooling, that the use of a floor-type air conditioner in addition to an air conditioner that controls the temperature of the entire space yields a greater effect of improving comfort. This is because, during cooling, even if cold air is blown out from the upper part of the space, it naturally flows to the lower part of the space. , is suppressed to some extent.
- the problem to be solved by the present invention is to provide an air conditioning system, a floor exhaust type air conditioner, a control method, and a program that can improve comfort with a simpler system configuration.
- the air conditioning system of the embodiment has a first indoor unit and a second indoor unit.
- the first indoor unit controls the temperature inside the space by controlling the blowing of hot air from the upper part of the space to the inside of the space.
- the second indoor unit controls blowing of hot air from under the floor of the space into the space based on the temperature of the lower part of the space.
- FIG. 4 is a schematic diagram for explaining an outline of air conditioning control by the air conditioning system 1 in the embodiment;
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows the whole structure of the air conditioning system 1 of embodiment.
- 4 is a flow chart showing the operation of the floor outlet type indoor unit 10 according to the embodiment.
- 4 is a flow chart showing the operation of the ceiling blowing type indoor unit 20-1 in the embodiment.
- FIG. 1 is a schematic diagram for explaining an overview of air conditioning control by an air conditioning system 1 according to an embodiment.
- Fig. 1 shows a vertical cross-sectional view of a part of the building including the space S.
- the building is, for example, an office building, and the space S is a space where people are active, such as an office space.
- the building may be, for example, a house, and the space S may be a space where people live, such as a living space.
- the air conditioning system 1 of the embodiment is a system for conditioning the air in the space S.
- the air conditioning system 1 is a system in which a floor-type air conditioner and a ceiling-type air conditioner are combined.
- An indoor unit of a floor exhaust type air conditioner (hereinafter referred to as “floor exhaust type indoor unit 10") is installed in the space S above the ceiling.
- a remote thermosensor 15 is installed on the side wall in the space S.
- two indoor units of a ceiling blowing type air conditioner (hereinafter referred to as “ceiling blowing type indoor unit 20-1" and “ceiling blowing type indoor unit 20-2") are installed.
- the indoor unit 20-1 and the indoor unit 20-2 will be simply referred to as the “ceiling type indoor unit 20" unless it is necessary to distinguish them from each other.
- a vertical duct 40 is installed along the side wall outside the space S.
- the space S has a double floor and functions as an underfloor air supply chamber 45 .
- a horizontal duct may be used instead of the underfloor air supply chamber 45 .
- the floor surface of the space S is provided with three outlets 50 . Air in the underfloor air supply chamber 45 can move into the space S through the outlet 50 .
- the number of outlets 50 is not limited to three, and may be any number of at least one. In addition, it is desirable that the air outlets 50 are provided at an appropriate number, positions, and intervals so that the temperature in the lower part of the space S is uniformed.
- an outdoor unit 30 is installed as shown in FIG. 2, which will be described later.
- the air conditioning system 1 in the present embodiment includes one floor discharge type indoor unit 10, two ceiling discharge type indoor units 20, and one outdoor unit 30 via refrigerant pipes 35 (connection pipes). It is a connected, multi-type air conditioning system.
- the number of the indoor unit 10 with floor discharge type and the number of indoor units 20 with ceiling discharge type are not limited to the above number, and may be any number of at least one unit or more. It is desirable that the ceiling blowing type indoor units 20 are installed at an appropriate number, positions and intervals so that the temperature in the upper part of the space S is uniformed.
- the refrigerant pipes 35 are pipes for passing refrigerant between the floor discharge type indoor unit 10 and the ceiling discharge type indoor unit 20 and the outdoor unit 30 .
- the refrigerant pipe 35 connects the floor discharge type indoor unit 10, the ceiling discharge type indoor unit 20-1, and the ceiling discharge type indoor unit 20-2 in parallel.
- the indoor units 10 and 20 are connected by refrigerant pipes 35 to form a refrigeration cycle in which the refrigerant is circulated.
- the air conditioning system 1 has a configuration in which both the floor discharge type indoor unit 10 and the ceiling discharge type indoor unit 20 are used.
- the floor discharge type indoor unit 10 and the ceiling discharge type indoor unit 20 are connected to the same outdoor unit 30, the floor discharge type indoor unit 10 and the ceiling discharge type indoor unit 20 are , are indoor units of air conditioners of the same air conditioning system.
- the outdoor unit 30 connected to the floor-blown indoor unit 10 and the outdoor unit 30 connected to the ceiling-blown indoor unit 20 may be installed separately.
- the temperature in the lower part of the space S is relatively lower than the temperature in the upper part. Therefore, the person in the room may feel uncomfortable with the cold due to the relatively low temperature around the feet, and may change the set temperature of the air conditioner to a higher temperature. In such an environment, a change to a higher set temperature causes excessive heating operation and wastes energy.
- the air conditioning system 1 can further reduce the upper and lower temperature difference in the space S by using a floor exhaust air conditioner in addition to the ceiling exhaust air conditioner.
- a floor exhaust air conditioner in addition to the ceiling exhaust air conditioner.
- the set temperature of the air conditioning system 1 can be set to a lower temperature without impairing comfort, thereby reducing energy consumption.
- the air discharged from the floor-blowing indoor unit 10 is first discharged to the vertical duct 40 .
- the air discharged to the vertical duct 40 is further discharged to an underfloor air supply chamber 45 which is a double-floor space to which the vertical duct 40 is connected.
- the air released to the underfloor air supply chamber 45 is further blown into the space S from three outlets 50 provided on the floor surface of the space S.
- the floor blowing type indoor unit 10 controls the blowing temperature of the air blown from the blowing port 50 .
- the remote thermosensor 15 is a sensor that measures the temperature at the lower position of the space S (hereinafter referred to as "lower temperature").
- the remote thermosensor 15 is installed at a position below the side wall in the space S. In this embodiment, the remote thermosensor 15 is installed at a height of 30 [cm] above the floor.
- the remote thermosensor 15 is configured to be able to transmit a signal to the floor outlet type indoor unit 10 .
- the remote thermosensor 15 transmits a signal indicating the measured lower temperature to the floor outlet type indoor unit 10 .
- the floor outlet type indoor unit 10 can recognize the lower temperature of the space S, and control the blowing temperature of the air blown into the space S from the outlet 50 based on the lower temperature.
- the remote thermosensor 15 is installed on the side wall in the space S in this embodiment, it is not limited to this.
- the remote thermosensor 15 can be installed at any position as long as it is a position where the lower temperature of the space S can be measured.
- a pillar having a height of 30 [cm] may be installed in the center of the space S, and the remote thermosensor 15 may be installed on top of the pillar.
- a plurality of remote thermosensors 15 may be installed in the space S.
- the floor-type indoor unit 10 may control the temperature of the air blown from the outlet 50 based on the average value of the temperatures measured by the plurality of remote thermosensors 15, for example. good.
- the suction temperature sensor 21 is a sensor that measures the temperature of the air sucked from the space S into the ceiling blowing type indoor unit 20 (hereinafter referred to as "suction temperature"). Based on the temperature measured by the suction temperature sensor 21, the ceiling outlet type indoor unit 20 estimates the temperature of the upper part of the space S (hereinafter referred to as "upper temperature”). In this embodiment, the upper temperature is the temperature of the space S at a height of 120 [cm] above the floor. The ceiling outlet type indoor unit 20 controls the upper temperature of the space S based on the set temperature set by the user.
- the ceiling exhaust type indoor unit 20 recognizes in advance that the upper temperature will be lower than the suction temperature by a predetermined temperature (for example, 2 [°C]).
- the ceiling blowing type indoor unit 20 estimates the upper temperature by subtracting the predetermined temperature value from the suction temperature measured by the suction temperature sensor 21 .
- the ceiling outlet type indoor unit 20 may be provided with a sensor capable of directly measuring the upper temperature of the space S instead of the intake temperature sensor 21 .
- the sensor that measures the upper temperature may be installed, for example, at the upper position of the side wall (for example, at a height of 120 [cm] above the floor). That is, the temperature sensor provided in the ceiling blowing type indoor unit 20 may be any sensor as long as it is a sensor capable of measuring or estimating the upper temperature of the space S.
- FIG. 2 is a block diagram showing the overall configuration of the air conditioning system 1 of the embodiment.
- the air conditioning system 1 includes a floor-type indoor unit 10, a remote thermosensor 15, a ceiling-type indoor unit 20-1, a ceiling-type indoor unit 20-2, and a remote controller 25. , an outdoor unit 30 , and a refrigerant pipe 35 .
- Each of the floor-blowing indoor unit 10 and the ceiling-blowing indoor unit 20 includes, for example, an indoor heat exchanger, an indoor expansion valve, and an indoor fan (not shown).
- the indoor heat exchanger is, for example, a fin-tube heat exchanger.
- the indoor expansion valve is, for example, an electronic expansion valve (PMV).
- the indoor expansion valve can change (adjust) the degree of opening. For example, as the degree of opening of the indoor expansion valve increases, the refrigerant flows more easily through the indoor expansion valve. On the other hand, as the degree of opening of the indoor expansion valve decreases, it becomes more difficult for the refrigerant to flow through the indoor expansion valve.
- the indoor heat exchanger has a valve body in which a through hole is formed, and a needle that can move back and forth with respect to the through hole. When the through hole is closed with the needle, the refrigerant stops flowing to the indoor heat exchanger.
- the indoor heat exchanger is closed, and the degree of opening of the indoor heat exchanger is the smallest.
- the refrigerant flows most easily into the indoor heat exchanger.
- the indoor heat exchanger is in an open state, and the degree of opening of the indoor heat exchanger is the largest.
- the indoor heat exchanger and the indoor expansion valve are connected by refrigerant piping 35 .
- refrigerant for example, R410A or R32 is used.
- Refrigerant oil and the like are included in the refrigerant.
- the indoor blower is a blower equipped with a centrifugal fan.
- the fan included in the indoor fan may be a fan of other structure such as an axial fan.
- a fan included in the indoor fan is arranged to face the indoor heat exchanger. Due to the operation of the fan of the indoor blower, the air in the space above the ceiling of the space S is sucked into the floor blowing indoor unit 10, and the air inside the space S is sucked into each of the ceiling blowing indoor units 20. The air sucked into each of the floor-blown indoor unit 10 and the ceiling-blown indoor unit 20 is heat-exchanged with the refrigerant by the indoor heat exchanger, and is released into the space S again by the operation of the fan.
- the floor outlet type indoor unit 10 includes a outlet temperature control section 11 .
- the blow-out temperature control unit 11 sequentially acquires information indicating the lower temperature of the space S, which is periodically transmitted from the remote thermosensor 15 (for example, every 5 seconds).
- the blowout temperature control unit 11 controls the blowout temperature of the air blown out into the space S from the blowout port 50 according to the lower temperature based on the acquired information.
- the blow-out temperature control unit 11 is configured in advance so as to be able to control the blow-out temperature of the air blown into the space S from the blow-out port 50 to a desired temperature.
- the blowout temperature control unit 11 stores in advance the temperature of the air that is lowered while the air discharged from the floor blowing type indoor unit 10 is blown out from the blowout port 50 into the space S.
- the blowout temperature control unit 11 controls the indoor heat exchanger so that the air from the floor blowing type indoor unit 10 is discharged to the vertical duct 40 at a temperature higher by the amount of the decrease in temperature.
- the blowout temperature control unit 11 is provided in the floor blowout type indoor unit 10, but it is not limited to this.
- the blowout temperature control unit 11 may be provided in the outdoor unit 30 or may be provided in a control device (external device) (not shown).
- the blowout temperature control unit 11 includes, for example, a processor such as a CPU (Central Processing Unit) connected via a bus, a memory, an auxiliary storage device, and the like.
- the blow-out temperature control unit 11 reads and executes a program from, for example, an auxiliary storage device.
- the auxiliary storage device is configured using a storage medium such as a magnetic hard disk device or a semiconductor storage device.
- the auxiliary storage device is configured using non-volatile memory such as EEPROM (Electrically Erasable Programmable Read-Only Memory).
- blowout temperature control unit 11 may be implemented using hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), or FPGA (Field Programmable Gate Array).
- the program may be recorded on a computer-readable recording medium.
- Computer-readable recording media include portable media such as flexible disks, magneto-optical disks, ROMs and CD-ROMs, and storage devices such as hard disks incorporated in computer systems.
- the program may be transmitted over telecommunications lines.
- the remote thermosensor 15 is a temperature sensor that measures the temperature of the lower part of the space S periodically (for example, every 5 seconds). As described above, in this embodiment, the remote thermosensor 15 is installed at a height of 30 [cm] above the floor, and measures the temperature at a position within the space S at a height of 30 [cm] above the floor. The remote thermosensor 15 periodically (for example, every 5 seconds) outputs a signal indicating the measured lower temperature to the floor outlet type indoor unit 10 .
- the floor outlet type indoor unit 10 includes, for example, a signal input section (not shown).
- the signal input unit receives a signal output from the remote thermosensor 15 and outputs the signal to the blowout temperature control unit 11 .
- the signal input unit is connected via a communication interface such as RS-232C (Recommended Standard - 232C), RS-422A (Recommended Standard - 422A), RS-485 (Recommended Standard - 485) or USB (Universal Serial Bus).
- RS-232C Recommended Standard - 232C
- RS-422A Recommended Standard - 422A
- RS-485 Recommended Standard - 485
- USB Universal Serial Bus
- the signal input unit receives a signal output from the remote thermosensor 15, and stores data of the lower temperature of the space S based on the signal as sensor data in a storage medium such as an auxiliary storage device. good too.
- the blowout temperature control unit 11 controls the blowout temperature of the air blown into the space S based on the sensor data stored in the storage medium.
- the remote control 25 is an input interface that accepts user's operation input regarding the settings of the air conditioning system 1 .
- the remote controller 25 accepts an operation input instructing switching of the power state of the air conditioning system 1 between on and off.
- the remote control 25 accepts an operation input instructing a set temperature. The user operates the remote controller 25 to input an instruction for setting the temperature in order to set the temperature in the space S to a desired temperature.
- the remote controller 25 outputs the input instruction information to the ceiling blower type indoor unit 20-1.
- the remote controller 25 and the ceiling outlet type indoor unit 20-1 may be connected by wire or wirelessly.
- the instruction information input to the ceiling discharge type indoor unit 20-1 is further transmitted to the ceiling discharge type indoor unit 20-2, the outdoor unit 30, and the floor discharge type indoor unit 10 as well.
- the air conditioning system 1 can control the temperature in the space S and control switching between on and off of the power supply state of the air conditioning system 1 based on the instruction information input from the remote controller 25. can.
- means for transmitting instruction information input from the remote control 25 in the air conditioning system 1 is not limited to the above configuration.
- the instruction information input from the remote controller 25 is first transmitted to a control device (external device) (not shown), and from the control device, the floor discharge type indoor unit 10, each ceiling discharge type indoor unit 20, and the outdoor unit 30 may be configured to be further transmitted.
- the blowout temperature control unit 11 of the floor blowout type indoor unit 10 blows out the air blown into the space S from the blowout port 50 in different operation modes, for example, when the load of the air conditioning system 1 is high and when the load is low. Control the temperature. In addition, the detail of an operation mode is demonstrated in detail later.
- the time when the load of the air conditioning system 1 is low refers to a time other than when the air conditioning system 1 is started. This is because, in general, except when the system is started, the difference between the set temperature and the actual temperature in the space S is often small, and the load on the air conditioning system 1 is relatively low. is assumed to be in a stable state.
- the high-load and low-load times of the air conditioning system 1 are not limited to the above cases.
- the term “low load” may refer to the entire state in which the deviation between the set temperature and the actual temperature in the space S is small.
- the outlet temperature control unit 11 of the floor outlet type indoor unit 10 performs heating in a high-load mode, which will be described later, until the lower temperature measured by the remote thermosensor 15 reaches the set temperature based on the information input from the remote controller 25. do the driving.
- the blowout temperature control unit 11 stops the heating operation when the measured lower temperature reaches the set temperature.
- the blow-out temperature control unit 11 restarts the heating operation in a low-load mode, which will be described later, when the measured lower temperature drops by a predetermined temperature.
- the blow-out temperature control unit 11 restarts the heating operation when the measured lower part temperature drops by 0.5 [° C.] from the set temperature.
- the ceiling exhaust type indoor unit 20 includes a suction temperature sensor 21 .
- the intake temperature sensor 21 measures the intake temperature of the air sucked from the space S into the ceiling blowing type indoor unit 20 .
- the ceiling blowing type indoor unit 20 estimates the upper temperature of the space S based on the suction temperature measured by the suction temperature sensor 21 .
- the ceiling ventilation type indoor unit 20 performs heating operation until the estimated upper temperature becomes lower than the set temperature based on the information input from the remote controller 25 by a predetermined temperature.
- the ceiling blowing type indoor unit 20 stops the heating operation when the estimated upper temperature becomes lower than the set temperature by a predetermined temperature. Further, the ceiling blowing type indoor unit 20 restarts the heating operation when the estimated upper temperature has decreased by a predetermined temperature after stopping the heating operation.
- the ceiling exhaust type indoor unit 20 stops the heating operation when the estimated upper temperature becomes 2[°C] lower than the set temperature. After that, when the estimated upper temperature has decreased by 0.5[°C] from a temperature 2[°C] lower than the set temperature (i.e., when the upper temperature is 2.5[°C] lower than the set temperature ] When the temperature becomes low), the heating operation is restarted.
- the outdoor unit 30 includes, for example, an outdoor heat exchanger, a four-way valve, a compressor, an outdoor expansion valve, an outdoor fan, and an accumulator (not shown).
- the refrigerant pipe 35 connects the outdoor expansion valve, the outdoor heat exchanger, the four-way valve, the compressor, and the accumulator.
- the outdoor heat exchanger is, for example, a fin-tube heat exchanger.
- the four-way valve is a valve for switching the direction in which the refrigerant flows within the refrigerant pipe 35 .
- the four-way valve switches the direction of refrigerant flow between the direction during heating operation and the opposite direction during cooling operation (or during defrosting operation).
- the air conditioning system 1 in this embodiment may be an air conditioning system dedicated to heating.
- the compressor can change the operating frequency through known inverter control.
- the compressor sucks the refrigerant through the suction port and compresses the refrigerant inside.
- the compressor discharges the compressed refrigerant to the outside through a discharge port.
- An accumulator is attached to the suction port of the compressor. The accumulator separates the refrigerant into liquid refrigerant and gas refrigerant and stores the liquid refrigerant.
- the outdoor expansion valve is configured in the same way as the indoor expansion valve.
- the outdoor expansion valve is, for example, an electronic expansion valve (PMV).
- PMV electronic expansion valve
- the outdoor expansion valve can change (adjust) the degree of opening. For example, as the degree of opening of the outdoor expansion valve increases, the refrigerant flows more easily through the outdoor expansion valve. On the other hand, as the degree of opening of the outdoor expansion valve decreases, the refrigerant becomes less likely to flow through the outdoor expansion valve.
- the outdoor fan is configured in the same way as the indoor fan.
- An outdoor fan is a fan provided with an axial fan.
- the fan included in the indoor fan may be a fan of other structure such as a centrifugal fan.
- a fan included in the outdoor blower is arranged to face the outdoor heat exchanger.
- blowout temperature control unit 11 of the floor blowout type indoor unit 10 in each operation mode The control of the blowout temperature by the blowout temperature control unit 11 of the floor blowout type indoor unit 10 in each operation mode will be described below.
- the blowout temperature control unit 11 controls the blowout temperature based on a preset upper limit temperature that differs according to the operation mode.
- the blow-out temperature control unit 11 sequentially controls the blow-out temperature so that the blow-out temperature does not exceed the upper limit temperature and is closer to the upper limit temperature.
- the operation mode when the load is high is called “high load mode”
- the operation mode when the load is low is called “low load mode”.
- FIG. 3 is a diagram showing an example of the upper limit temperature of the blow-out temperature in the high-load mode.
- the horizontal axis represents the lower temperature of the space S measured by the remote thermosensor 15, and the vertical axis represents the air blown from the outlet 50 controlled by the air outlet temperature control unit 11. represents temperature.
- the unit of the lower temperature and the outlet temperature shown in FIG. 3 are both Celsius (°C).
- the upper limit temperature of the blowout temperature is added to the lower temperature by 10[°C]. temperature.
- the upper limit temperature of the blowout temperature is a constant temperature of 30[°C]. is.
- a buoyancy effect occurs based on the relationship between the lower temperature and the blowing temperature, and the warm air in the lower part of the space S may rise to the upper part of the space S. This prevents the upper and lower temperature difference in the space S from being reduced by raising the lower temperature.
- the upper limit temperature line of the blowout temperature shown in FIG. 3 is an example of a line appropriately set to suppress an increase in warm air due to the effect of such buoyancy.
- the line of the upper limit temperature of the blowing temperature shown in FIG. It is set in advance based on the general survey results.
- the line of the upper limit temperature is based on the general survey result that the influence of the buoyancy effect increases when the lower temperature is 20 [° C.] or more, and the blowing temperature exceeds 30 [° C.]. is set.
- the blowout temperature control unit 11 acquires information indicating the lower temperature of the space S, which is output periodically (for example, every 5 seconds) from the remote thermosensor 15 during operation in the high load mode.
- the blowout temperature control unit 11 specifies the upper limit temperature of the blowout temperature corresponding to the measured lower temperature, based on the line of the upper limit temperature of the blowout temperature shown in FIG.
- the information indicating the upper limit temperature line of the blowing temperature shown in FIG. 3 is stored in advance, for example, in the aforementioned auxiliary storage device.
- the blow-out temperature control unit 11 sequentially controls the blow-out temperature so that the blow-out temperature does not exceed the specified upper limit temperature and is closer to the specified upper limit temperature.
- the blowout temperature control unit 11 stops the heating operation when the measured lower temperature reaches the set temperature. After that, when the measured lower part temperature drops from the set temperature by a predetermined temperature (0.5 [° C.] in this embodiment), the blow-out temperature control unit 11 resumes the heating operation in the low-load mode.
- a predetermined temperature 0.5 [° C.] in this embodiment
- FIG. 4 is a diagram showing an example of the upper limit temperature of the blow-out temperature in the low-load mode.
- the horizontal axis represents the lower temperature of the space S measured by the remote thermosensor 15, and the vertical axis represents the temperature from the outlet 50 controlled by the outlet temperature control unit 11. It represents the blowing temperature of the blown air. Note that the units for the lower temperature and the blowing temperature shown in FIG. 4 are both Celsius (° C.).
- the upper limit temperature of the blowout temperature is the lower temperature as in the high load mode described above. 10 [° C.] is added to the temperature.
- the control is performed at the upper limit temperature different from that in the high load mode.
- the upper limit of the blowout temperature in the low load mode is The temperature is lower than the upper limit temperature.
- the line of the upper limit temperature of the blowing temperature is the intersection of the lower temperature of 19 [°C] and the blowing temperature of 29 [°C], and the intersection of the lower temperature of 26 [°C] and the blowing temperature of 26 [°C]. Contained is a curvilinear line. This curved line is a line that draws a gentle curve that makes the blowing temperature slightly lower than the straight line that straightly connects the above two intersections.
- this curve-shaped upper limit temperature line of the blowing temperature is a line derived based on a field survey.
- the curvilinear line is an example of a line that is appropriately set so as not to make the person in the room feel that the face is hot due to the warm air blown up from the outlet 50 .
- the intersection of the lower temperature of 19 [°C] and the blowing temperature of 29 [°C] is the line of the temperature where the upper limit temperature of the blowing temperature is added to the lower temperature by 10 [°C], and the line of the lower temperature of 19 [°C]. It is set based on the intersection with the line.
- the lower temperature of 19[° C.] is a reference temperature for the lower limit for not making people in the room feel cold, which was derived from a field survey.
- the intersection of the lower temperature 26 [°C] and the blowing temperature 26 [°C] is the line where the lower temperature and the blowing temperature are isothermal and the line where the lower temperature 26 [°C] is indicated by the dashed dotted line in FIG. It is set based on the intersection with Note that the lower temperature of 26 [°C] is a reference upper limit temperature for preventing people in the room from feeling hot, which was derived from a field survey.
- the blow-out temperature control unit 11 acquires information indicating the temperature of the lower part of the space S, which is output periodically (for example, every 5 seconds) from the remote thermosensor 15 during operation in the low-load mode.
- the blowout temperature control unit 11 specifies the upper limit temperature of the blowout temperature corresponding to the measured lower temperature, based on the line of the upper limit temperature of the blowout temperature shown in FIG.
- the information indicating the upper limit temperature line of the blowing temperature shown in FIG. 4 is stored in advance in, for example, the aforementioned auxiliary storage device.
- the blow-out temperature control unit 11 sequentially controls the blow-out temperature so that the blow-out temperature does not exceed the specified upper limit temperature and is closer to the specified upper limit temperature.
- the blowout temperature control unit 11 stops the heating operation when the measured lower temperature reaches the set temperature. After that, when the measured lower part temperature drops from the set temperature by a predetermined temperature (0.5 [° C.] in this embodiment), the blow-out temperature control unit 11 resumes the heating operation in the low-load mode.
- a predetermined temperature 0.5 [° C.] in this embodiment
- FIG. 5 is a flow chart showing the operation of the floor outlet type indoor unit 10 in the embodiment.
- the operation of the floor outlet type indoor unit 10 shown in the flowchart of FIG. 5 is started, for example, when the power of the air conditioning system 1 is turned on.
- the outlet temperature control unit 11 of the floor outlet type indoor unit 10 waits for input of information indicating a set temperature instruction (step S101).
- the set temperature instruction is an instruction for controlling the temperature in the space S to a desired set temperature, which is received by the user's operation input to the remote controller 25 .
- Information indicating the set temperature instruction is output from, for example, the remote controller 25 and input to the floor outlet type indoor unit 10 via the ceiling outlet type indoor unit 20-1.
- step S101 When the blow-out temperature control unit 11 receives the input of the information indicating the setting temperature instruction (step S101: YES), it corresponds to the lower temperature of the space S during the heating operation in the high-load mode shown in FIG. 3, for example. and the information indicating the temperature of the lower part of the space S periodically input from the remote thermosensor 15 (every 5 seconds, for example). start (step S102).
- the blow-out temperature control unit 11 continues until the lower temperature of the space S, which is periodically (for example, every 5 seconds) input from the remote thermosensor 15, reaches the set temperature based on the information indicating the set temperature instruction.
- the floor blowing control in the high load mode is continued (step S104).
- the blow-out temperature control unit 11 receives an input of information indicating an operation end instruction (step S103, YES), it ends the floor blow-out control (step S111). With this, the operation of the floor outlet type indoor unit 10 shown in the flowchart of FIG. 5 is completed.
- the operation end instruction is, for example, an instruction for turning off the power of the air conditioning system 1 that is accepted by the user's operation input to the remote controller 25 .
- step S104 When the lower temperature of the space S, which is input periodically (for example, every 5 seconds) from the remote thermosensor 15, reaches the set temperature (step S104: YES), the blowout temperature control unit 11 temporarily suspends the floor blowout control. Stop (step S105).
- the blow-out temperature control unit 11 controls the floor temperature until the lower temperature of the space S, which is periodically (for example, every 5 seconds) input from the remote thermosensor 15, becomes lower than the set temperature by 0.5[°C].
- the state in which the blow-out control is suspended is maintained (step S107).
- step S106 YES
- step S111 the operation of the floor outlet type indoor unit 10 shown in the flowchart of FIG. 5 is completed.
- step S107, YES the upper limit temperature of the outlet temperature corresponding to the lower temperature of the space S during heating operation in the low load mode shown in FIG.
- the floor blowing control for sequentially controlling the blowing temperature is started (step S108).
- the blow-out temperature control unit 11 continues until the lower temperature of the space S, which is periodically (for example, every 5 seconds) input from the remote thermosensor 15, reaches the set temperature based on the information indicating the set temperature instruction.
- the floor blowing control in the low load mode is continued (step S110).
- step S109 YES
- step S111 the operation of the floor outlet type indoor unit 10 shown in the flowchart of FIG. 5 is completed.
- step S110 When the lower temperature of the space S, which is input periodically (for example, every 5 seconds) from the remote thermosensor 15, reaches the set temperature (step S110: YES), the blowout temperature control unit 11 temporarily suspends the floor blowout control. Stop (step S105). The blow-out temperature control unit 11 repeats the operations after step S106 described above.
- FIG. 6 is a flow chart showing the operation of the ceiling outlet type indoor unit 20-1 in the embodiment.
- the operation of the ceiling outlet type indoor unit 20-1 shown in the flowchart of FIG. 6 is started, for example, when the power of the air conditioning system 1 is turned on.
- the operation of the ceiling blower type indoor unit 20-2 is basically the same as the operation of the ceiling blower type indoor unit 20-1, which will be described below, so the description thereof will be omitted.
- the ceiling ventilation type indoor unit 20-1 waits for input of information indicating a setting temperature instruction (step S201).
- the set temperature instruction is an instruction for controlling the temperature in the space S to a desired set temperature, which is accepted by the user's operation input to the remote controller 25 .
- Information indicating the setting temperature instruction is input from the remote controller 25, for example.
- the ceiling discharge type indoor unit 20-1 When the ceiling discharge type indoor unit 20-1 receives the input of the information indicating the setting temperature instruction (step S201: YES), the ceiling discharge type indoor unit 20-1 transmits the information indicating the setting temperature instruction to the floor discharge type indoor unit 10 and the ceiling discharge type indoor unit 20. -2, and notify the outdoor unit 30 (step S202).
- the ceiling discharge type indoor unit 20-1 determines the upper part temperature of the space S based on the upper part temperature of the space S estimated based on the temperature measured by the intake temperature sensor 21 and the set temperature set by the user. Ceiling blow-out control is started to control the temperature (step S203).
- the upper temperature of the space S estimated based on the temperature measured by the intake temperature sensor 21 is 2 [°C] below the set temperature based on the information indicating the set temperature instruction. Ceiling blow-out control is continued until the temperature becomes low (step S205).
- the ceiling blowing type indoor unit 20-1 receives input of information indicating an operation end instruction (step S204, YES), it ends the ceiling blowing control (step S209). With this, the operation of the ceiling outlet type indoor unit 20-1 shown in the flowchart of FIG. 6 is completed.
- the operation end instruction is, for example, an instruction for turning off the power of the air conditioning system 1 that is accepted by the user's operation input to the remote controller 25 .
- the indoor unit 20-1 of the ceiling exhaust type indoor unit 20-1 (step S205, YES).
- the ceiling blow-out control is suspended (step S206).
- the ceiling exhaust type indoor unit 20-1 determines that the upper temperature of the space S, which is estimated based on the temperature measured by the intake temperature sensor 21, is 0.5[°C] lower than the set temperature by 2°C. ° C.] (that is, until the upper temperature becomes 2.5 [° C.] lower than the set temperature), the suspended ceiling blowing control is maintained (step S208).
- step S207 if the ceiling blowing type indoor unit 20-1 receives input of information indicating an operation end instruction (step S207, YES), it ends the ceiling blowing control (step S209). With this, the operation of the ceiling outlet type indoor unit 20-1 shown in the flowchart of FIG. 6 is completed.
- the upper temperature of the space S estimated based on the temperature measured by the intake temperature sensor 21 is 0.5[°C] lower than the temperature 2[°C] lower than the set temperature. If the temperature reaches the temperature (step S208, YES), the upper temperature of the space S is estimated based on the temperature measured by the intake temperature sensor 21 and the set temperature set by the user. is resumed (step S203).
- the ceiling outlet type indoor unit 20-1 repeats the operations after step S204.
- the user uses the remote control 25 to turn on the power of the air conditioning system 1 and set the set temperature to 24 [°C].
- the outlet temperature control unit 11 of the floor outlet type indoor unit 10 controls the outlet temperature corresponding to the case where the lower temperature is 16 [° C.] based on the upper limit line of the outlet temperature in the high-load mode shown in FIG. Recognize that the temperature is 26[°C].
- the blowout temperature control unit 11 controls the blowout temperature of the air blown out from the blowout port 50 to be 26 [°C].
- the blowout temperature control unit 11 controls to change the blowout temperature according to the change in the lower temperature based on the upper limit line of the blowout temperature in the high load mode shown in FIG. That is, the blowout temperature control section 11 increases the blowout temperature in accordance with the rise in the lower temperature until the lower temperature reaches 20 [°C]. As shown in FIG. 3, when the lower temperature reaches 20[°C], the blowout temperature is controlled to 30[°C].
- the blowout temperature control unit 11 controls the blowout temperature to be a constant 30[°C] until the lower part temperature reaches the set temperature of 24[°C].
- the blow-out temperature control unit 11 temporarily stops the floor blow-out control when the lower part temperature reaches 24 [°C].
- the blowout temperature control unit 11 controls the blowout temperature to change according to the change in the lower temperature, based on the upper limit line of the blowout temperature in the low-load mode shown in FIG. That is, the blowout temperature control unit 11 sets the blowout temperature to 26.7[°C], which corresponds to the case where the lower part temperature is 23.5[°C], at the first time when the floor blowout control is restarted. , to control the outlet temperature.
- the blowout temperature control unit 11 changes the blowout temperature according to the rise in the lower part temperature until the lower part temperature measured by the remote thermosensor 15 reaches the set temperature of 24 [°C]. As shown in FIG. 4, when the bottom temperature reaches 24[°C] and the blowing from the floor surface is temporarily stopped again, the blowing temperature is controlled to be 26.5[°C]. .
- the ceiling blowing type indoor unit 20 starts ceiling blowing control with the goal of setting the upper temperature of the space S to 22[°C], which is 2[°C] lower than the set temperature of 24[°C]. .
- the ceiling blowing type indoor unit 20 temporarily stops the ceiling blowing control when the upper temperature reaches 22 [°C]. After that, the upper temperature decreases, and when the upper temperature of the space S reaches 21.5 [° C.], which is 0.5 [° C.] lower than the set temperature of 22 [° C.], the ceiling blowing type indoor unit 20 restarts ceiling blow-out control.
- the lower temperature will not reach 24[°C] when the upper temperature reaches 22[°C]. Therefore, after the upper temperature reaches 22[° C.] and the heating operation of the ceiling blowing type indoor unit 20 is stopped, the floor blowing type indoor unit 10 is in a state of performing the heating operation alone.
- the air conditioning system 1 of the present embodiment performs heating operation in all units using the floor-blowing indoor unit 10 and the ceiling-blowing indoor unit 20 when the system is started.
- the temperature in the space S is quickly raised to a temperature close to the set temperature.
- the air conditioning system 1 stops the ceiling exhaust type indoor unit 20, and switches to the heating operation using only the floor exhaust type indoor unit 10. .
- the temperature in the space S is controlled only by the heating operation of the floor-blowing indoor unit 10 within a controllable range by the floor-blowing indoor unit 10 .
- the air conditioning system 1 finely controls the blow-out temperature when the load is low (for example, when other than when the system is started) compared to when the load is high, so that comfort can be further improved. can.
- the air conditioning system has the first indoor unit and the second indoor unit.
- the first indoor unit controls the temperature inside the space by controlling the blowing of hot air from the upper part of the space to the inside of the space.
- the second indoor unit controls blowing of hot air from under the floor of the space into the space based on the temperature of the lower part of the space.
- the above air conditioning system is the air conditioning system 1 in the embodiment
- the above first indoor unit is the ceiling exhaust type indoor unit 20 in the embodiment
- the above second indoor unit is the floor exhaust type in the embodiment.
- the space is the space S in the embodiment
- the temperature inside the space is the upper temperature in the embodiment
- the temperature in the lower part of the space is the lower temperature in the embodiment.
- the air conditioning system of the embodiment can reduce the temperature difference between the temperature of the lower part and the temperature of the upper part of the space.
- the air-conditioning system can raise the temperature around the feet of the occupants of the room, lower the temperature of the upper part of the space, and create a thermal environment in which the occupants feel comfortable. can be done.
- the air conditioning system of the embodiment can lower the set temperature (for example, 2[°C] lower temperature) while maintaining comfort, thereby reducing energy consumption. .
- the air conditioning system of the embodiment is not, for example, a system in which air conditioners of different types are combined as in the above-described prior art, it does not require large-scale system construction, and the system can be easily introduced. be.
- the air conditioning system of the embodiment can improve comfort with a simpler system configuration.
- the second indoor unit may include a blowout temperature control section that controls the blowout temperature of the warm air based on the upper limit temperature determined for each temperature of the lower part of the space.
- the blowout temperature control section is the blowout temperature control section 11 in the embodiment.
- blow-out temperature control section may control the blow-out temperature based on different upper limit temperatures depending on whether it is at startup.
- the upper limit temperature that differs depending on whether or not it is at startup is the upper limit temperature line shown in FIGS. 3 and 4, respectively, in the embodiment.
- the first indoor unit may control the temperature inside the space so that the temperature is lower than the designated set temperature by a predetermined temperature.
- the predetermined temperature is 2 [° C.] in the embodiment.
- a temperature sensor that measures the temperature of the lower part of the space may be further provided, and the second indoor unit may control blowing of hot air based on the temperature measured by the temperature sensor.
- the above temperature sensor is the remote thermosensor 15 in the embodiment.
- a part of the air conditioning system 1 in the above-described embodiment may be realized by a computer.
- a program for realizing this function may be recorded in a computer-readable recording medium, and the program recorded in this recording medium may be read into a computer system and executed.
- the "computer system” referred to here includes hardware such as an OS and peripheral devices.
- the term "computer-readable recording medium” refers to portable media such as flexible discs, magneto-optical discs, ROMs and CD-ROMs, and storage devices such as hard discs incorporated in computer systems.
- “computer-readable recording medium” refers to a program that dynamically retains programs for a short period of time, like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. It may also include something that holds the program for a certain period of time, such as a volatile memory inside a computer system that serves as a server or client in that case.
- the program may be for realizing part of the functions described above, and may be capable of realizing the functions described above in combination with a program already recorded in the computer system. It may be implemented using hardware such as PLD (Programmable Logic Device) or FPGA (Field Programmable Gate Array).
- Air-conditioning system 10 Floor-type indoor unit 11 Blow-out temperature control unit 15 Remote thermosensor 20 (20-1, 20-2) Ceiling-type indoor unit 21 Suction temperature sensor 25 Remote controller 30 Outdoor unit 35 Refrigerant pipe 40 Vertical duct 45 Underfloor air supply chamber 50 outlet
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Abstract
Description
10 床吹出し式室内機
11 吹出温度制御部
15 リモートサーモセンサ
20(20-1,20-2) 天井吹出し式室内機
21 吸込温度センサ
25 リモコン
30 室外機
35 冷媒配管
40 垂直ダクト
45 床下給気チャンバー
50 吹出し口
Claims (8)
- 空間の上部から前記空間の内部への温風の吹き出しを制御することで、前記空間の内部の温度を制御する第1室内機と、
前記空間の下部の温度に基づいて、前記空間の床下から前記空間の内部への温風の吹き出しを制御する第2室内機と、
を有する空気調和システム。 - 前記第2室内機は、
前記空間の下部の温度ごとに定められた上限温度に基づいて前記温風の吹出温度を制御する吹出温度制御部
を備える請求項1に記載の空気調和システム。 - 前記吹出温度制御部は、起動時であるか否かに応じて異なる前記上限温度に基づいて前記吹出温度を制御する
請求項2に記載の空気調和システム。 - 前記第1室内機は、指定された設定温度より所定の温度だけ低い温度にするように、前記空間の内部の温度を制御する
請求項1から3のうちいずれか一項に記載の空気調和システム。 - 前記空間の下部の温度を計測する温度センサ
をさらに備え、
前記第2室内機は、前記温度センサによって計測された温度に基づいて温風の吹き出しを制御する
請求項1から4のうちいずれか一項に記載の空気調和システム。 - 空間の下部の温度と、前記空間の下部の温度ごとに定められた上限温度とに基づいて、前記空間の床下から前記空間の内部へ吹き出される温風の吹出温度を制御する吹出温度制御部
を備える床吹出し式空気調和装置。 - 第1室内機と第2室内機とを有する空気調和システムの制御方法であって、
前記第1室内機が、空間の上部から前記空間の内部への温風の吹き出しを制御することで、前記空間の内部の温度を制御するステップと、
前記第2室内機が、前記空間の下部の温度に基づいて、前記空間の床下から前記空間の内部への温風の吹き出しを制御するステップと、
を有する制御方法。 - 第1室内機と第2室内機とを有する空気調和システムのコンピュータに、
前記第1室内機に、空間の上部から前記空間の内部への温風の吹き出しを制御させることで、前記空間の内部の温度を制御させるステップと、
前記第2室内機に、前記空間の下部の温度に基づいて、前記空間の床下から前記空間の内部への温風の吹き出しを制御させるステップと、
を実行させるためのプログラム。
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EP21936056.7A EP4321815A1 (en) | 2021-04-09 | 2021-04-09 | Air-conditioning system, under-floor air conditioner, control method, and program |
PCT/JP2021/015024 WO2022215252A1 (ja) | 2021-04-09 | 2021-04-09 | 空気調和システム、床吹出し式空気調和装置、制御方法、及びプログラム |
JP2023512627A JPWO2022215252A1 (ja) | 2021-04-09 | 2021-04-09 | |
CN202180096742.7A CN117321343A (zh) | 2021-04-09 | 2021-04-09 | 空调系统、地板吹出式空调装置、控制方法以及程序 |
US18/481,328 US20240044544A1 (en) | 2021-04-09 | 2023-10-05 | Air conditioning system, floor blowing air conditioner, control method, and storage medium |
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Citations (4)
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JP3263324B2 (ja) | 1996-11-19 | 2002-03-04 | 鹿島建設株式会社 | 床吹出空調方式の運転制御方法及びその空調システム |
JP2002310450A (ja) * | 2001-04-06 | 2002-10-23 | Kioi:Kk | 空調装置 |
JP2005201601A (ja) * | 2004-01-19 | 2005-07-28 | Atsushi Iwamae | 建物の暖房システム。 |
JP2018048784A (ja) * | 2016-09-23 | 2018-03-29 | 株式会社富士通ゼネラル | 空気調和システム |
-
2021
- 2021-04-09 CN CN202180096742.7A patent/CN117321343A/zh active Pending
- 2021-04-09 EP EP21936056.7A patent/EP4321815A1/en active Pending
- 2021-04-09 WO PCT/JP2021/015024 patent/WO2022215252A1/ja active Application Filing
- 2021-04-09 JP JP2023512627A patent/JPWO2022215252A1/ja active Pending
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3263324B2 (ja) | 1996-11-19 | 2002-03-04 | 鹿島建設株式会社 | 床吹出空調方式の運転制御方法及びその空調システム |
JP2002310450A (ja) * | 2001-04-06 | 2002-10-23 | Kioi:Kk | 空調装置 |
JP2005201601A (ja) * | 2004-01-19 | 2005-07-28 | Atsushi Iwamae | 建物の暖房システム。 |
JP2018048784A (ja) * | 2016-09-23 | 2018-03-29 | 株式会社富士通ゼネラル | 空気調和システム |
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