WO2022054122A1 - Système de climatisation - Google Patents

Système de climatisation Download PDF

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Publication number
WO2022054122A1
WO2022054122A1 PCT/JP2020/033900 JP2020033900W WO2022054122A1 WO 2022054122 A1 WO2022054122 A1 WO 2022054122A1 JP 2020033900 W JP2020033900 W JP 2020033900W WO 2022054122 A1 WO2022054122 A1 WO 2022054122A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
specific space
air conditioner
server device
conditioning system
Prior art date
Application number
PCT/JP2020/033900
Other languages
English (en)
Japanese (ja)
Inventor
英希 大野
圭吾 岡島
隆 池田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2022548263A priority Critical patent/JPWO2022054122A1/ja
Priority to PCT/JP2020/033900 priority patent/WO2022054122A1/fr
Publication of WO2022054122A1 publication Critical patent/WO2022054122A1/fr

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Classifications

    • 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
    • F24F11/47—Responding to energy costs
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy

Definitions

  • This disclosure relates to an air conditioning system.
  • Patent Document 1 discloses an air conditioning control system in which an air conditioner is connected to a server via a network.
  • the air conditioner has an environment detection sensor and a load side unit.
  • the environment detection sensor detects the temperature for each of a plurality of compartments in which the air-conditioned space is divided horizontally and vertically.
  • the load side unit harmonizes the air-conditioned space.
  • the temperature of each compartment is detected for a plurality of compartments in which the air-conditioned space is divided horizontally and vertically, so that the user can store the stored material in a compartment having a temperature suitable for storage. Can be placed.
  • the power consumption can be suppressed.
  • This disclosure is made to solve the above-mentioned problems, and the purpose is to reduce the cost of the air conditioning system.
  • the air conditioning system includes an air conditioner and a server device. Refrigerant circulates in the air conditioner, and the air conditioner cools a specific space.
  • the server device controls the air conditioner.
  • the air conditioner includes a compressor, a first heat exchanger, an expansion valve, a second heat exchanger, and a sensor unit.
  • the compressor and the first heat exchanger are arranged outside the specific space.
  • the second heat exchanger and the sensor unit are arranged in a specific space.
  • the refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
  • the server device controls the air conditioner using the physical quantity of the specific space measured by each of the sensor units and the operation data of the air conditioner.
  • the sensor unit includes a plurality of first sensors and a plurality of second sensors.
  • Each of the plurality of first sensors is arranged along the wall of the specific space and measures the temperature of the first region of the specific space.
  • Each of the plurality of second sensors is arranged on the ceiling of the specific space and measures the temperature of the second region of the specific space.
  • the first region is narrower than the second region and is a region outside the second region.
  • each of the plurality of first sensors is arranged along the wall of the specific space to measure the temperature of the first region of the specific space
  • each of the plurality of second sensors is arranged on the ceiling of the specific space.
  • FIG. 4 is a plan view of the ceiling of the warehouse of FIG. 4 from the Z-axis direction.
  • FIG. 1 is a block diagram showing the configuration of the air conditioning system 1000 according to the embodiment.
  • the air conditioning system 1000 includes a terminal device 80, a server device 90, and an air conditioner 100.
  • the terminal device 80, the server device 90, and the air conditioner 100 are connected to each other via the network NW.
  • the network NW includes, for example, the Internet, a WAN (Wide Area Network), and a LAN (Local Area Network).
  • the number of terminal devices 80 connected to the network NW may be two or more.
  • the number of air conditioners 100 connected to the network NW may be two or more.
  • the terminal device 80 acquires information about the air conditioner 100 via the server device 90.
  • the terminal device 80 transmits an operation command to the air conditioner 100 via the server device 90.
  • the terminal device 80 includes, for example, a PC (Personal Computer), a tablet, or a smartphone.
  • the server device 90 acquires and stores the operation data of the air conditioner 100 and the data regarding the space air-conditioned by the air conditioner 100 from the air conditioner 100.
  • the server device 90 learns the optimum control for the air conditioner 100 by using the accumulated data.
  • the server device 90 analyzes the airflow in the space air-conditioned by the air conditioner 100, and transmits a control command to the air conditioner 100.
  • the control command includes, for example, a target evaporation temperature, a target temperature, a start timing of the defrosting operation, an air volume, and a wind direction.
  • the server device 90 includes a processing circuit 91, a memory 92, a communication unit 93, and an input / output unit 94.
  • the processing circuit 91, the memory 92, the communication unit 93, and the input / output unit 94 are connected to each other via the bus 95.
  • the processing circuit 91 may be dedicated hardware, or may be a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit) that executes a program stored in the memory 92.
  • the processing circuit 91 may include, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), or an FPGA (FPGA). Field Programmable Gate Array) or a combination of these is applicable.
  • the processing circuit 91 is a CPU
  • the function of the server device 90 is realized by software, firmware, or a combination of software and firmware.
  • the software or firmware is described as a program and stored in the memory 92.
  • Each of the CPU and the GPU is also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microprocessor, a processor, or a DSP (Digital Signal Processor).
  • a machine learning program, a control program of the air conditioner 100, and an airflow analysis program are stored in the memory 92.
  • the processing circuit 91 reads out and executes the program stored in the memory 92.
  • the memory 92 stores operation data of the air conditioner 100 and data regarding the space air-conditioned by the air conditioner 100.
  • the memory 92 includes a non-volatile or volatile semiconductor memory (for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), or EPROM (Electrically Erasable Programmable Read Only Memory). )), And includes magnetic discs, flexible discs, optical discs, compact discs, mini discs, or DVDs (Digital Versatile Discs).
  • the communication unit 93 communicates with each of the plurality of air conditioners 100 via the network NW.
  • the input / output unit 94 receives an operation from the user and outputs the processing result to the user.
  • the input / output unit 94 includes, for example, a mouse, a keyboard, a touch panel, a display, and a speaker.
  • the air conditioner 100 includes a system controller 1, a plurality of unit coolers 10, a condensing unit 20, a plurality of sensor units 30, and a receiver 50.
  • the plurality of sensor units 30 include a plurality of temperature / humidity sensors 31 (a plurality of first sensors) and a plurality of infrared sensors (a plurality of second sensors).
  • a temperature sensor may be used instead of the temperature / humidity sensor 31.
  • the system controller 1 receives a control command from the server device 90 and controls a plurality of unit coolers 10 and a condensing unit 20 in an integrated manner.
  • the system controller 1 transmits the operation data of the air conditioner 100 to the server device 90.
  • the operation data includes, for example, the drive frequency of the compressor, the degree of superheating of the refrigerant flowing out of the evaporator, the degree of supercooling of the refrigerant flowing out of the condenser, and the opening degree of the expansion valve.
  • the plurality of unit coolers 10 are arranged in each of the plurality of warehouses 40 (specific spaces).
  • the refrigerant circulates between the plurality of unit coolers 10 and the condensining unit 20, and each of the plurality of warehouses 40 is cooled by the unit coolers 10 arranged in the warehouse 40.
  • the air conditioner 100 performs a cooling operation and a defrosting operation.
  • the plurality of sensor units 30 are arranged in the plurality of warehouses 40, respectively.
  • Each of the plurality of sensor units 30 transmits the temperature and humidity of the warehouse in which the sensor unit 30 is arranged to the receiver 50.
  • the receiver 50 transmits the temperature and humidity of the plurality of warehouses 40 measured by the plurality of sensor units 30 to the server device 90.
  • the temperature and humidity may be transmitted to the server device 90 via the system controller 1.
  • FIG. 2 is a block diagram showing the configuration of the air conditioner 100 of FIG. 1 and the flow of the refrigerant in the cooling operation.
  • each of the plurality of unit coolers 10 includes an expansion valve 11, an evaporator 12, a controller 14, a wind direction adjusting unit 15, a fan 16, and an on-off valve. 17 and 18 are included.
  • the fan 16 blows air toward the evaporator 12.
  • the wind direction adjusting unit 15 adjusts the direction of the air flow discharged from the evaporator 12 to the outside of the unit cooler 10.
  • the condensing unit 20 includes a compressor 21, a condenser 22 (first heat exchanger), an on-off valve 23, and a controller 24.
  • the system controller 1 controls the direction (angle) of the wind direction adjusting unit 15, the opening degree of the expansion valve 11, the rotation speed of the fan 16, and the opening / closing of the on-off valve 17 via the controller 14.
  • the system controller 1 controls the drive frequency of the compressor 21 and the opening / closing of the on-off valve 23 via the controller 24.
  • the system controller 1 and the controllers 14 and 24 may be integrally formed.
  • the refrigerant circulates in the order of the compressor 21, the condenser 22, the on-off valve 18, the expansion valve 11, and the evaporator 12.
  • the on-off valves 23 and 17 are connected in series in this order between the discharge port of the compressor 21 and the inflow port of the evaporator 12.
  • the on-off valve 18 is opened and the on-off valves 17 and 23 are closed.
  • FIG. 3 is a diagram showing the configuration of the air conditioner 100 of FIG. 1 and the flow of the refrigerant in the defrosting operation.
  • the on-off valve 23 and the on-off valve 17 included in the unit cooler 10 are opened, and the unit cooler 10 is opened.
  • the included on-off valve 17 is closed.
  • a part of the high temperature refrigerant discharged from the compressor 21 is supplied to the evaporator 12 without going through the condenser 22 and the expansion valve 11.
  • the frost generated in the evaporator 12 is melted by the high temperature refrigerant from the compressor 21.
  • FIG. 4 is a diagram showing how a plurality of temperature / humidity sensors 31 and a plurality of infrared sensors 32 included in the sensor unit 30 of FIG. 1 are arranged in the warehouse 40.
  • the X-axis, the Y-axis, and the Z-axis are orthogonal to each other.
  • the minus direction of the Z axis is the direction of gravity.
  • the warehouse 40 includes a ceiling Ce, walls W1, W2, W3, W4, and a floor Fr.
  • the ceiling Ce and the floor Fr face each other in the Z-axis direction.
  • the walls W1 and W3 face each other in the X-axis direction.
  • the walls W2 and W4 face each other in the Y-axis direction.
  • Each of the walls W1 and W3 connects the walls W2 and W4.
  • Each of the walls W1 to W4 connects the ceiling Ce and the floor Fr.
  • the unit cooler 10 is arranged in the center of the connection portion between the ceiling Ce and the wall W2 inside the warehouse 40.
  • the wind direction adjusting unit 15 of the unit cooler 10 is directed to the inside of the warehouse 40.
  • a plurality of temperature / humidity sensors 31 are arranged from the ceiling Ce to the floor Fr along the Z-axis direction around the connection portions of the walls W1 and W2.
  • a plurality of temperature / humidity sensors 31 are arranged around the connection portions of the walls W1 and W4 from the ceiling Ce to the floor Fr along the Z-axis direction.
  • a plurality of temperature / humidity sensors 31 are arranged from the ceiling Ce to the floor Fr along the Z-axis direction in the central portion of the wall W1.
  • a plurality of temperature / humidity sensors 31 are arranged around the connection portions of the walls W2 and W3 from the ceiling Ce to the floor Fr along the Z-axis direction.
  • a plurality of temperature / humidity sensors 31 are arranged around the connection portions of the walls W3 and W4 from the ceiling Ce to the floor Fr along the Z-axis direction.
  • a remote controller 60 of the unit cooler 10 is arranged on the wall W3.
  • a plurality of infrared sensors 32 are arranged along the Y-axis direction in the central portion of the ceiling Ce. The plurality of infrared sensors 32 is less than the plurality of temperature / humidity sensors 31.
  • FIG. 5 is a plan view of the ceiling Ce of the warehouse 40 of FIG. 4 from the Z-axis direction.
  • the region Rg1 (first region) is the measurement region of the temperature / humidity sensor 31.
  • the region Rg2 (second region) is a measurement region of the infrared sensor 32.
  • the region Rg1 is a region around the temperature / humidity sensor 31.
  • the region Rg1 is smaller than the region Rg2.
  • the region Rg1 is a region outside the region Rg2.
  • the data around the walls W1 to W4 that are the boundaries of the airflow are more important than the data in the central part in the warehouse 40.
  • the data that requires high accuracy in the airflow analysis is acquired by the temperature / humidity sensor 31, and the data in the space where a certain degree of low accuracy is allowed is acquired by the infrared sensor 32.
  • FIG. 6 is a diagram showing the relationship between the compressor output, the target evaporation temperature, the operating rate, the cooling capacity, and the efficiency of the air conditioner 100 of FIG.
  • the curve C10 represents the relationship between the compressor output or the target evaporation temperature and the operating rate.
  • the curve C11 represents the relationship between the compressor output or the target evaporation temperature and the cooling capacity.
  • the curve C12 represents the relationship between the compressor output or the target evaporation temperature and the efficiency. As shown in FIG. 6, there is a compressor output and a target evaporation temperature that maximizes operating efficiency.
  • the server device 90 predicts the operating rate of the air conditioner 100 and the electricity cost per unit time (for example, one day) by using the analysis result of the airflow distribution in the warehouse 40.
  • the server device 90 uses the analysis result of the airflow distribution in the warehouse 40 to set the target evaporation temperature predicted to maximize the efficiency of the air conditioner 100 to the air conditioner 100. Send.
  • the server device 90 detects the temperature variation (temperature unevenness) in the warehouse 40 by using the analysis result of the airflow distribution in the warehouse 40.
  • the server device 90 raises the target temperature when the maximum temperature in the warehouse 40 is lower than the allowable temperature Tu in the warehouse 40, and lowers the target temperature when the maximum temperature in the warehouse 40 exceeds the allowable temperature Tu.
  • FIG. 7 is a diagram showing a time chart of the maximum temperature Tmax and the target temperature in the warehouse 40 of FIG. 4 together.
  • the curve C21 represents the change in the highest temperature Tmax in the warehouse 40.
  • the polygonal line C22 represents a change in the target temperature.
  • the temperature Tgu is a lower limit of the target temperature, for example, a target temperature set by the user.
  • the temperature difference (margin) obtained by subtracting the temperature Tmax from the allowable temperature Tu is larger than the threshold value Mth, so that the inside of the warehouse 40 is cooled.
  • the target temperature is raised from Tgu to Tg1 (> Tgu) in order to suppress cooling by the air conditioner 100 in the time zone from time t1 to t2. Since the margin is equal to or less than the threshold value Mth at times t2 to t3, it is highly necessary to cool the inside of the warehouse 40.
  • the target temperature is lowered from T1 in order to promote cooling by the air conditioner 100 in the time zone from time t2 to t3.
  • the margin is larger than the threshold value Mth, so that the need for cooling the inside of the warehouse 40 is low.
  • the target temperature is raised from Tgu to Tg1.
  • the threshold value Mth is appropriately determined by an actual machine experiment or a simulation.
  • FIG. 8 is a flowchart showing the flow of the target temperature setting process performed in the server device 90.
  • the process shown in FIG. 8 is called for each sampling time by a main routine (not shown) that controls the server device 90 in an integrated manner.
  • the step is simply referred to as S.
  • the server device 90 determines whether or not the temperature Tmax is lower than the allowable temperature Tu in S11. When the temperature Tmax is equal to or higher than the allowable temperature Tu (NO in S11), the server device 90 lowers the target temperature in S14 and returns the process to the main routine. When the temperature Tmax is lower than the allowable temperature Tu (YES in S11), the server device 90 determines whether or not the margin is larger than the threshold value Mth in S12. When the margin is equal to or less than the threshold value Mth (NO in S12), the server device 90 lowers the target temperature in S14 and returns the process to the main routine. If the margin is greater than the threshold Mth (YES in S12), the server device 90 raises the target temperature in S13 and returns the process to the main routine.
  • the server device 90 starts the performance deterioration of the air conditioner 100 due to the frost generated in the evaporator 12 and the defrosting operation of the air conditioner 100 by using the temperature and humidity in the warehouse 40 and the operation data of the air conditioner 100. In this case, the temperature rise in the warehouse 40 is analyzed.
  • the server device 90 starts the defrosting operation of the air conditioner 100 at the timing when the electric cost required for the defrosting operation is predicted to be the minimum, or at the timing when the temperature rise in the warehouse 40 in the defrosting operation is predicted to be the minimum. do.
  • the server device 90 uses the temperature and humidity in the warehouse 40, the operation data of the air conditioner 100, the position and temperature of the articles placed in the warehouse 40, and the presence or absence of a worker present in the warehouse 40.
  • the ventilation direction of the air conditioner 100 and the rotation speed of the fan 16 are controlled so that the temperature becomes uniform inside.
  • FIG. 9 is an external view of the tablet 80B, which is an example of the terminal device 80 of FIG. As shown in FIG. 9, the tablet 80B displays the airflow distribution in the warehouse 40 superimposed on the three-dimensional image in the warehouse 40.
  • changes in airflow and electricity bills in the warehouse 40 can be visualized in chronological order at unit time intervals (for example, 1 day, 1 month, or 1 year).
  • the change in the airflow and the change in the electricity bill in the warehouse 40 when the air conditioning control as shown in FIGS. 7 and 8 is performed. It is desirable to compare and display the change in the air flow in the warehouse 40 and the change in the electricity bill when the air conditioning control is not performed.
  • the data of the airflow change and the electricity bill in the warehouse 40 when the air conditioning control is not performed are the data for a certain period (for example, several days) acquired in the state where the air conditioning control is not performed.
  • air-conditioning system manufacturers use these data to simulate replacement with refrigeration cycle equipment, which leads to further energy savings, expansion of refrigerators, installation of fans in the heat cage area, etc., and reduce the initial cost required for it.
  • Possible running costs can be proposed to the owner of the warehouse 40.
  • the manufacturer of the air conditioning system should make a proposal regarding the arrangement of luggage from the viewpoint of quality improvement and energy saving improvement without the need for equipment changes due to the tendency of changes in airflow or temperature unevenness in the warehouse 40. You can also.
  • the owner of the warehouse 40 may be charged according to the degree of energy saving achieved.
  • the manufacturing cost of the air conditioning system can be reduced.

Abstract

Dans la présente invention, un climatiseur refroidit un espace spécifié (40). Un compresseur et un premier échangeur de chaleur du climatiseur sont disposés à l'extérieur de l'espace spécifié (40), et un second échangeur de chaleur (10) et des unités de capteur du climatiseur sont disposés dans l'espace spécifié (40). Un dispositif serveur utilise une quantité physique de l'espace spécifié (40) telle que mesurée par chacune des unités de capteur (30) et des données de fonctionnement pour le climatiseur afin de commander le climatiseur. Les unités de capteur (30) comprennent une pluralité de premiers capteurs (31) et une pluralité de seconds capteurs (32). Chacun de la pluralité de premiers capteurs (31) est disposé le long d'une paroi (W1-W4) de l'espace spécifié (40) et mesure la température d'une première région (Rg1) dans l'espace spécifié (40). Chacun de la pluralité de seconds capteurs (32) est disposé sur le plafond (Ce) de l'espace spécifié (40) et mesure la température d'une seconde région (Rg2) dans l'espace spécifié (40). Les premières régions (Rg1) sont plus petites que les secondes régions (Rg2) et sont à l'extérieur des secondes régions (Rg2).
PCT/JP2020/033900 2020-09-08 2020-09-08 Système de climatisation WO2022054122A1 (fr)

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JP2022548263A JPWO2022054122A1 (fr) 2020-09-08 2020-09-08
PCT/JP2020/033900 WO2022054122A1 (fr) 2020-09-08 2020-09-08 Système de climatisation

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Application Number Priority Date Filing Date Title
PCT/JP2020/033900 WO2022054122A1 (fr) 2020-09-08 2020-09-08 Système de climatisation

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WO2022054122A1 true WO2022054122A1 (fr) 2022-03-17

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009229031A (ja) * 2008-03-25 2009-10-08 Hitachi Plant Technologies Ltd 室内空調方法と加湿機能付き室内空調装置
JP2010085032A (ja) * 2008-09-30 2010-04-15 Daikin Ind Ltd 空気調和装置
JP2012156394A (ja) * 2011-01-27 2012-08-16 Chugoku Electric Power Co Inc:The 室内温度制御システム
JP2013217634A (ja) * 2012-03-13 2013-10-24 Taisei Corp 省エネルギー空調システム
WO2019224916A1 (fr) * 2018-05-22 2019-11-28 三菱電機株式会社 Dispositif de climatisation et entrepôt équipé de celui-ci
WO2020008550A1 (fr) * 2018-07-04 2020-01-09 三菱電機株式会社 Dispositif de gestion d'économie d'énergie, système de gestion d'économie d'énergie, procédé et programme de gestion d'économie d'énergie
WO2020089996A1 (fr) * 2018-10-30 2020-05-07 三菱電機株式会社 Terminal d'actionnement à distance et système de climatisation associé

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06230144A (ja) * 1993-02-05 1994-08-19 Aichi Tokei Denki Co Ltd 在室検知システム

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009229031A (ja) * 2008-03-25 2009-10-08 Hitachi Plant Technologies Ltd 室内空調方法と加湿機能付き室内空調装置
JP2010085032A (ja) * 2008-09-30 2010-04-15 Daikin Ind Ltd 空気調和装置
JP2012156394A (ja) * 2011-01-27 2012-08-16 Chugoku Electric Power Co Inc:The 室内温度制御システム
JP2013217634A (ja) * 2012-03-13 2013-10-24 Taisei Corp 省エネルギー空調システム
WO2019224916A1 (fr) * 2018-05-22 2019-11-28 三菱電機株式会社 Dispositif de climatisation et entrepôt équipé de celui-ci
WO2020008550A1 (fr) * 2018-07-04 2020-01-09 三菱電機株式会社 Dispositif de gestion d'économie d'énergie, système de gestion d'économie d'énergie, procédé et programme de gestion d'économie d'énergie
WO2020089996A1 (fr) * 2018-10-30 2020-05-07 三菱電機株式会社 Terminal d'actionnement à distance et système de climatisation associé

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