WO2020089996A1 - Terminal d'actionnement à distance et système de climatisation associé - Google Patents

Terminal d'actionnement à distance et système de climatisation associé Download PDF

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Publication number
WO2020089996A1
WO2020089996A1 PCT/JP2018/040256 JP2018040256W WO2020089996A1 WO 2020089996 A1 WO2020089996 A1 WO 2020089996A1 JP 2018040256 W JP2018040256 W JP 2018040256W WO 2020089996 A1 WO2020089996 A1 WO 2020089996A1
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WO
WIPO (PCT)
Prior art keywords
image
unit
indoor
airflow
indoor unit
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Application number
PCT/JP2018/040256
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English (en)
Japanese (ja)
Inventor
哲英 横山
幹 佐藤
龍一 永田
端之 松下
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.)
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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 PCT/JP2018/040256 priority Critical patent/WO2020089996A1/fr
Priority to JP2020554636A priority patent/JPWO2020089996A1/ja
Publication of WO2020089996A1 publication Critical patent/WO2020089996A1/fr
Priority to JP2022163050A priority patent/JP7341306B2/ja

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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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

Definitions

  • the present invention relates to a remote control terminal for an air conditioner and an air conditioning system.
  • Patent Document 1 discloses an air conditioning control terminal that displays an image showing the blowing of air from an indoor unit on a touch panel.
  • the wind direction of the indoor unit is changed based on the operation of touching and moving the image.
  • the wind direction of the air conditioner can be changed by an intuitive operation.
  • Patent Document 1 the air conditioner is controlled using information on the room where the indoor unit is installed.
  • the arrangement in the room where the indoor unit is installed may change during operation of the indoor unit, such as when the user moves.
  • the air flow distribution formed by the indoor unit may change.
  • Patent Document 1 does not take into consideration the change in the air flow distribution according to the change in the indoor arrangement during the operation of the indoor unit.
  • the present invention has been made to solve the above problems, and its purpose is to improve the comfort of the air conditioner.
  • the remote operation terminal is an air conditioner remote operation terminal having an indoor unit that blows air to a specific space.
  • the indoor unit includes an image sensor that acquires a first image of the specific space.
  • the remote control terminal includes a communication unit, a display unit, and a control unit.
  • the communication unit wirelessly communicates with the indoor unit.
  • the control unit receives the first image from the indoor unit via the communication unit.
  • the control unit superimposes a function of creating a second image, which is a three-dimensional image of the specific space, on the basis of the first image, and a three-dimensional airflow distribution of the specific space, which is derived by simulation based on computational fluid dynamics, on the second image. And a function of displaying the combined image on the display unit.
  • the air conditioner is displayed by displaying the composite image in which the three-dimensional airflow distribution of the specific space derived by the simulation based on computational fluid dynamics is superimposed on the first image on the display unit. You can improve your comfort.
  • FIG. 3 is a perspective view showing an example of an external appearance of an indoor unit of the air conditioning system according to Embodiment 1, and a diagram showing a user operating a PDA, which is an example of a remote control terminal. It is a schematic diagram showing an example of circuit composition of an air harmony machine concerning Embodiment 1. It is a figure which shows together the functional block diagram which shows an example of a structure of the air conditioner of FIG. 2, and the functional block diagram which shows an example of a structure of PDA of FIG. It is a figure which shows a mode that the bird's-eye view of the room before operation of an air conditioner is displayed on the display part of PDA.
  • FIG. 4 is a diagram showing an AR thermal image viewed from an infrared sensor of the indoor unit 10.
  • FIG. It is a flow chart which shows the flow of the preset processing performed in PDA prior to the operation of the air conditioner.
  • 4 is a flowchart showing a flow of airflow control processing performed by a control unit of the PDA of FIG. 3.
  • FIG. 8 is a diagram showing an instantaneous airflow display time for each of the first embodiment, the modification of the first embodiment, and the comparative examples 1 and 2.
  • FIG. 7 is a diagram showing an instantaneous airflow display time for each of the first to fourth embodiments.
  • FIG. 1 is a perspective view showing an example of the appearance of an indoor unit 10 of an air conditioning system 100 according to Embodiment 1, and a state in which a user operates a PDA (Personal Digital Assistant) 7 which is an example of a remote control terminal.
  • the PDA 7 is, for example, a smartphone.
  • the indoor unit 10 is a wall-mounted type indoor unit installed on the wall surface in the room.
  • the indoor unit 10 is provided with a suction port 1 and a blowout port 2 in a housing forming an outer shell.
  • the suction port 1 is provided for sucking air in a room (specific space) that is a space to be air-conditioned.
  • the air outlet 2 is provided to send conditioned air from the air conditioner 1000 having the indoor unit 10 into the room.
  • the blower fan 131 generates an airflow from the suction port 1 to the air outlet 2.
  • the indoor unit 10 blows air into the room from the air outlet 2.
  • a vertical wind vane 3 and a horizontal wind vane 4 are provided.
  • the vertical wind direction plate 3 is rotatably provided in order to adjust the vertical sending direction when sending conditioned air.
  • the left and right wind direction plates 4 are rotatably provided to adjust the horizontal sending direction when sending the conditioned air.
  • the indoor unit 10 is provided with an infrared sensor 5.
  • the infrared sensor 5 is provided on the lower left side when viewed from the indoor unit 10 side.
  • the infrared sensor 5 scans the temperature inside the room, detects the infrared rays emitted from the surface of the object, and acquires the temperature information inside the room as a thermal image.
  • the installation position of the infrared sensor 5 is not limited to the position shown in FIG.
  • the infrared sensor 5 should just be installed in the position which can acquire the temperature information in a room.
  • the shape of the infrared sensor 5 is not limited to the shape shown in FIG. 1, and may be any shape as long as the temperature information in the room can be acquired.
  • An indoor communication unit 6 capable of WiFi (registered trademark) communication is attached to the indoor unit 10.
  • the indoor unit 10 can perform WiFi communication with the PDA 7.
  • FIG. 2 is a schematic diagram showing an example of a circuit configuration of the air conditioner 1000 according to the first embodiment.
  • the air conditioner 1000 includes an indoor unit 10 and an outdoor unit 20.
  • the indoor unit 10 and the outdoor unit 20 are connected by a refrigerant pipe.
  • a refrigeration cycle is formed by the refrigerant flowing through the refrigerant pipe.
  • the air conditioner 1000 has a cooling mode and a heating mode as operation modes.
  • the refrigerant circulation direction in the cooling mode is indicated by a solid line
  • the refrigerant circulation direction in the heating mode is indicated by a dotted line.
  • FIG. 2 shows a case where one indoor unit 10 and one outdoor unit 20 are connected, but the number of indoor units 10 and outdoor units 20 is not limited to this example.
  • a plurality of indoor units 10 may be connected to one outdoor unit 20, or one or a plurality of indoor units 10 may be connected to a plurality of outdoor units 20.
  • the indoor unit 10 includes an expansion valve 11, an indoor heat exchanger 12, an indoor blower 13, and an indoor control device 30.
  • An expansion valve 11, an indoor heat exchanger 12, an indoor blower 13, and an indoor control device 30 are housed in a housing of the indoor unit 10.
  • the outdoor unit 20 includes a compressor 21, a refrigerant flow path switching device 22, an outdoor heat exchanger 23, an outdoor blower 24, and an outdoor control device 40.
  • the expansion valve 11 decompresses the refrigerant to expand it.
  • the expansion valve 11 includes, for example, a valve such as an electronic expansion valve whose opening can be controlled.
  • the indoor heat exchanger 12 is the air in the space to be air-conditioned (hereinafter, referred to as "indoor air” as appropriate), which is supplied by the indoor blower 13 including the blower fan 131 that generates the airflow from the suction port 1 to the blowout port 2. And heat is exchanged between the refrigerant and the refrigerant. As a result, heating air or cooling air that is conditioned air supplied to the indoor space is generated.
  • the indoor heat exchanger 12 functions as an evaporator that evaporates the refrigerant and cools the indoor air by the heat of vaporization of the refrigerant.
  • the indoor heat exchanger 12 functions as a condenser that radiates heat of the refrigerant to indoor air to condense the refrigerant.
  • the indoor control device 30 includes, for example, software executed on a computing device such as a microcomputer or a CPU (Central Processing Unit), and hardware such as a circuit device that realizes various functions.
  • the indoor control device 30 controls the operation of the entire indoor unit 10 based on, for example, a setting by a user operation on the PDA 7 in FIG. 1 or a remote controller (not shown), or temperature information from the infrared sensor 5.
  • the indoor control device 30 controls driving of the infrared sensor 5 when the temperature information is acquired by the infrared sensor 5.
  • the refrigerant flow path switching device 22 is switched to the state shown by the solid line in FIG.
  • the low-temperature low-pressure refrigerant is compressed by the compressor 21, becomes a high-temperature high-pressure gas refrigerant, and is discharged.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 21 flows into the outdoor heat exchanger 23 via the refrigerant flow path switching device 22.
  • the high-temperature and high-pressure gas refrigerant that has flowed into the outdoor heat exchanger 23 condenses while exchanging heat with the outdoor air and radiating heat, and then flows out of the outdoor heat exchanger 23 as a high-pressure liquid refrigerant in a supercooled state.
  • the high-pressure liquid refrigerant flowing out of the outdoor heat exchanger 23 is decompressed by the expansion valve 11 to become a low-temperature low-pressure gas-liquid two-phase refrigerant, and flows into the indoor heat exchanger 12.
  • the low-temperature low-pressure gas-liquid two-phase refrigerant flowing into the indoor heat exchanger 12 cools the indoor air by exchanging heat with the indoor air to absorb heat and evaporate, and becomes a low-temperature low-pressure gas refrigerant to become the indoor heat exchanger 12 Drained from.
  • the low-temperature low-pressure gas refrigerant flowing out from the indoor heat exchanger 12 passes through the refrigerant flow switching device 22 and is sucked into the compressor 21.
  • the refrigerant flow path switching device 22 is switched to the state shown by the dotted line in FIG.
  • the low-temperature low-pressure refrigerant is compressed by the compressor 21, becomes a high-temperature high-pressure gas refrigerant, and is discharged.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 21 flows into the indoor heat exchanger 12 via the refrigerant flow path switching device 22.
  • the high-temperature and high-pressure gas refrigerant that has flowed into the indoor heat exchanger 12 exchanges heat with the indoor air and radiates heat to condense, and becomes a high-pressure liquid refrigerant in a supercooled state and flows out of the indoor heat exchanger 12.
  • the high-pressure liquid refrigerant flowing out of the indoor heat exchanger 12 is decompressed by the expansion valve 11 to become a low-temperature low-pressure gas-liquid two-phase refrigerant, and flows into the outdoor heat exchanger 23.
  • the low-temperature low-pressure gas-liquid two-phase refrigerant that has flowed into the outdoor heat exchanger 23 exchanges heat with the outdoor air, absorbs heat and evaporates, and becomes a low-temperature low-pressure gas refrigerant that flows out of the outdoor heat exchanger 23.
  • the low-temperature low-pressure gas refrigerant flowing out of the outdoor heat exchanger 23 passes through the refrigerant flow switching device 22 and is sucked into the compressor 21.
  • FIG. 3 is a diagram including a functional block diagram showing an example of the configuration of the air conditioner 1000 of FIG. 2 and a functional block diagram showing an example of the configuration of the PDA 7 of FIG. 1.
  • the indoor control device 30 is included.
  • the indoor control device 30 includes an input circuit 31, an arithmetic processing device 32, a storage device 33, and an output circuit 34.
  • the input circuit 31 is input with setting information from a remote controller (not shown), setting information from the PDA 7, temperature information from the infrared sensor 5, control information from the outdoor control device 40, and the like.
  • the setting information from the PDA 7 is input via the indoor communication unit 6.
  • the input circuit 31 outputs various input information to the arithmetic processing unit 32.
  • the arithmetic processing device 32 uses the data stored in the storage device 33 to perform various processes based on the information received from the input circuit 31. For example, the arithmetic processing device 32 performs a process of creating a thermal image showing the temperature state of the room based on the temperature information from the infrared sensor 5, and detects the position of the human body existing in the room and the temperature of the human body based on the thermal image. Perform processing, etc.
  • the arithmetic processing unit 32 generates control information for each operating device provided in the indoor unit 10 and control information for the outdoor unit 20 so that conditioned air is delivered according to the position of the human body, the temperature of the human body, and the like. Output to the output circuit 34.
  • the control information includes, for example, information for controlling the wind direction, information for controlling the air volume of the indoor blower 13, and information for controlling the opening degree of the expansion valve 11.
  • the storage device 33 stores programs and various data necessary for the processing performed by the arithmetic processing device 32.
  • the storage device 33 can also store data obtained by various processes by the arithmetic processing device 32.
  • the storage device 33 stores a thermal image when there is no human body in the room.
  • the thermal image is a thermal image serving as a reference used for detecting the position of the human body in the room by the arithmetic processing device 32 (hereinafter, appropriately referred to as “reference thermal image”).
  • the reference thermal image is created in advance by the arithmetic processing unit 32, for example, based on the temperature information when it can be determined that there is no human body in the room.
  • the output circuit 34 receives various control information from the arithmetic processing unit 32 and outputs the control information to the corresponding operating device provided in the indoor unit 10 or the outdoor unit 20. For example, when receiving the control information for controlling the wind direction, the output circuit 34 outputs this control information to a drive device (not shown) for driving the vertical wind direction plate 3 and the horizontal wind direction plate 4. When receiving the control information for controlling the air volume, the output circuit 34 outputs this control information to a drive device (not shown) for driving the indoor blower 13. Furthermore, when the control information for the outdoor unit 20 is received, the output circuit 34 outputs the control information to the outdoor control device 40 of the outdoor unit 20.
  • the temperature information acquired by the infrared sensor 5 is input to the arithmetic processing device 32 from the input circuit 31.
  • the arithmetic processing unit 32 creates thermal image information indicating the temperature distribution in the room based on the input temperature information.
  • the thermal image information is transmitted from the indoor communication unit 6 to the PDA 7.
  • the PDA 7 includes a control unit 71, a terminal communication unit 72, a display unit 73, a visible camera 74, and a storage unit 75.
  • the terminal communication unit 72 wirelessly communicates with the indoor communication unit 6 of the indoor unit 10.
  • the visible camera 74 acquires an indoor image as three-dimensional floor plan information (indoor three-dimensional floor plan information) of the room where the indoor unit 10 is arranged.
  • the display unit 73 includes a touch panel 731 that detects contact with the display unit 73.
  • a remote control application (software) that can remotely control the air conditioner 1000 while experiencing the air flow in the room is installed.
  • the control unit 71 uses the remote control application installed in the storage unit 75 to display an indoor image captured by the visible camera 74, a floor plan layout plan input to the PDA 7, and an infrared sensor mounted on the indoor unit 10. It is possible to analyze the thermal image information photographed by 5, and display the three-dimensional room floor plan information converted into the three-dimensional image on the display unit 73.
  • the 3D room floor plan information is also used as a prototype of the 3D analysis mesh model used in the simulation (CFD calculation) based on Computational Fluid Dynamics (CFD).
  • the control unit 71 can perform the CFD calculation to obtain the airflow distribution in the room, and display the airflow distribution on the display unit 73.
  • the control unit 71 performs CFD calculation at each sampling time.
  • FIG. 4 to 6 are diagrams showing a bird's-eye view of the room displayed on the display unit 73 of the PDA 7.
  • FIG. 4 the indoor image 41a before the operation of the air conditioner 1000 is displayed.
  • FIG. 5 the indoor image 41b when the user (human body) 50 is about to start the operation of the air conditioner 1000 is displayed.
  • FIG. 6 the indoor image 41c after the operation of the air conditioner 1000 is started is displayed.
  • the indoor images 41a to 41c are, for example, CG (Computer Graphics).
  • the lens unit of the visible camera 74 is arranged in front of the PDA 7 on which the screen of the display unit 73 is arranged.
  • the lens portion of the visible camera 74 may be arranged on the back surface of the PDA 7.
  • a door 42 is provided, and a sofa 43 and a shelf 44 are arranged.
  • the door 42 is closed and no one is displayed inside the room.
  • the arrangement in the room is changed to an arrangement in which the human body 50 is sitting on the sofa 43 and the door 42 is opened.
  • the three-dimensional floor plan image created based on the indoor three-dimensional floor plan information acquired before the operation of the air conditioner 1000 has a predetermined operating state (for example, the operation at the end of the previous operation of the air conditioner 1000). State, or an operating state that is assumed when the operation of the air conditioner 1000 is stable), the three-dimensional airflow distribution (streamline) 60b in the room that is assumed when the operation of the air conditioner 1000 is started.
  • a predetermined operating state for example, the operation at the end of the previous operation of the air conditioner 1000.
  • the three-dimensional airflow distribution (streamline) 60b in the room that is assumed when the operation of the air conditioner 1000 is started.
  • FIG. 6 the arrangement in the room is changed to the arrangement in which the human body 50 stands upright in front of the sofa 43.
  • the three-dimensional airflow distribution 60c in the room predicted by the PDA 7 during the operation of the air conditioner 1000 is displayed in an overlapping manner on the three-dimensional floor plan image.
  • the airflow from the air outlet 2 of the indoor unit 10 flows toward the sofa 43, but the airflow changes so as to spread while avoiding the human body 50 in front.
  • FIG. 7 is a diagram showing a mesh model corresponding to the state of the room shown in FIG.
  • FIG. 7A is a plan view of the room seen from directly above (Z-axis direction).
  • FIG.7 (b) is the figure which planarly viewed the inside of a room from right side (Y-axis direction).
  • the hatched area near the center of FIG. 7A and the center of the lower portion of FIG. 7B is the hatching integrated with the human body 50 sitting on the sofa 43.
  • the hatching boundary H1a of the human body 50 and the hatching boundary H1b of the sofa 43 are identified by the information of the floor plan.
  • the region R1a that surrounds the human body 50 is formed so as to be surrounded by a rectangular parallelepiped that secures at least two mesh regions from the hatching boundary H1a.
  • the area R1b surrounding the sofa 43 is formed so as to be surrounded by a rectangular parallelepiped in which at least two meshes are secured from the hatching boundary H1b, the areas R1a and R1b are shown as overlapping.
  • the mesh model is formed by an orthogonal grid fixed in the spatial coordinate system XYZ, and the number of meshes in the entire indoor area shown in FIG. 7 is about 90,000. The same applies to FIG.
  • the outer boundary of the entire mesh area is the basic wall surface boundary, but the location where the door 42 or the window is opened is treated as the fluid outflow boundary.
  • FIG. 8 and 9 are diagrams showing a mesh model corresponding to the state of the room shown in FIG.
  • FIG. 8A and FIG. 9A are plan views of the room viewed from directly above.
  • FIG. 8B and FIG. 9B are plan views of the interior of the room from the side.
  • the sofa 43 is shown in the hatched area near the center of FIG. 8A and near the lower center of FIG. 8B, and the human body standing upright at a position approaching the indoor unit 10 from the sofa 43. Fifty is shown. This corresponds to the state of the room at a certain sampling timing when the instantaneous airflow prediction of the air conditioner 1000 is performed.
  • An area R2a surrounding the hatching boundary H2a of the human body 50 and an area R2b surrounding the hatching boundary H2b of the sofa 43 are shown.
  • the mesh model shown in FIG. 7 will be referred to as a mesh model (first mesh model) corresponding to the indoor state at a certain sampling timing during operation of the air conditioner 1000, and the mesh model shown in FIG.
  • the mesh model (second mesh model) corresponds to the state of the room at the sampling time next to the sampling time of 7.
  • the indoor image of the infrared sensor 5 at the current sampling time and the indoor image of the infrared sensor 5 at the previous sampling time are compared using the image recognition system.
  • changes in the position of the human body 50, the positions of furniture such as the sofa 43 and the shelf 44, and the opening and closing of the door 42 are checked for changes in closed objects that have ignorable effects on the airflow.
  • a partial area (airflow correction area) different from the mesh model at the previous sampling time is extracted from the current mesh model.
  • the hatching boundary H2b of the sofa 43 of FIG. 8 is within the region R1b surrounding the sofa 43 of FIG.
  • the region R2b in FIG. 8 is not treated as an airflow correction region that requires recalculation.
  • the hatching boundary H2a of the human body 50 in FIG. 8 is judged to have largely moved because it is out of the region R1a surrounding the human body 50 in FIG.
  • the region R1a in FIG. 7 and the region R2a in FIG. 8 are treated as airflow correction regions that require recalculation. That is, the recalculation region includes a mesh corresponding to the position (first position) of the human body 50 at the previous sampling time and a mesh corresponding to the position (second position) of the human body 50 at the current sampling time.
  • FIG. 9 (b) a region R3 of FIG. 9 surrounded by a rectangular parallelepiped in which at least two meshes are secured from the hatching boundary H1a of the human body 50 of FIG. 7 and the hatching boundary H2a of the human body 50 of FIG. It is necessary to newly form it and treat it as an airflow correction area that requires recalculation.
  • the airflow correction area for recalculation is formed by a rectangular parallelepiped parallel to the outer peripheral wall surface of the indoor mesh space.
  • the extracted object When the extracted object is inclined, it may be formed by a rectangular parallelepiped inclined with respect to the outer peripheral wall surface.
  • the hatched boundary H1x of the object X of interest changes from the previous sampling time to the current sampling time beyond the surrounding fluid region R1x, it is determined that the object X has moved, and the CFD for the airflow correction region is determined. Calculation (partial region CFD calculation) is performed.
  • the threshold can be appropriately set by an actual machine experiment or simulation.
  • the fluid region R1x is set as a rectangular parallelepiped larger than the hatching boundary H1x by two mesh sizes or more.
  • the CFD calculation is performed for the entire area of the mesh model. Compared with the case where it is performed, the number of meshes to be recalculated is reduced to 1/9 (length 1/2 in X axis direction, length 1/3 in Y axis direction, and length 2/3 in Z axis direction) can do. For the areas other than the area R2, the result of the CFD calculation at the previous sampling time is used.
  • the control unit 71 of the PDA 7 displays, on the display unit 73, a composite image in which the three-dimensional airflow distribution predicted using the result of the partial region CFD calculation is superimposed on the thermal image acquired from the infrared sensor 5.
  • the composite image is, for example, an augmented reality (AR) image.
  • FIG. 10 is a diagram showing an indoor thermal image 51a viewed from the human body 50 in the room. Based on the thermal image obtained from the infrared sensor 5, a thermal image of the indoor body 50 looking at the indoor unit 10 side is predicted, and gradation showing the temperature distribution is applied. An image of the human body 50 and a three-dimensional airflow distribution 61a are superimposed on this thermal image. For example, the user can change the direction of the airflow formed by the indoor unit 10 by tracing a streamline indicating the airflow in a desired direction on the touch panel 731 of FIG.
  • FIG. 11 is a diagram showing an AR thermal image 51b viewed from the infrared sensor 5 of the indoor unit 10.
  • the edge portion of the object detected by the edge detection processing is highlighted by a white line in the thermal image acquired from the infrared sensor 5.
  • the image of the infrared sensor 5 the image of the human body 50 having a gradation indicating the temperature distribution, and the three-dimensional airflow distribution 61b are superimposed on the thermal image.
  • FIG. 12 is a flowchart showing the flow of a preset process performed in the PDA 7 prior to the operation of the air conditioner 1000.
  • the step is simply described as S.
  • the PDA is initialized in S101.
  • the remote operation application is downloaded from the manufacturer site of the air conditioner 1000 to the PDA 7 and installed.
  • the model information of the air conditioner 1000 is input to the remote control application, and the airflow characteristic data of the model itself is acquired from the manufacturer.
  • the airflow characteristic data for each model is, for example, an experiment of the air conditioner 1000 regarding the relationship between the rotational speed of the blower fan 131 of the indoor unit 10, the angle of the vertical wind direction plate 3, and the airflow speed distribution depending on the angles of the left and right wind direction plates 4. It is calculation data including data and CFD calculation results.
  • the airflow characteristic data for each model is acquired from a cloud service or the like.
  • indoor floor plan information before operation of the air conditioner 1000 is collected. Specifically, the interior of the room is photographed by the visible camera 74 of the PDA 7, the three-dimensional floor plan is read, basic information is input, the room is photographed by the infrared sensor 5 of the air conditioner 1000, and the floor plan of the remote control application is recorded. Input is made. It is possible to clearly identify indoor three-dimensional floor plan information, which is difficult to identify by indoor photography by the infrared sensor 5, by using the visible camera 74 of the PDA 7 or the like. As a result, the three-dimensional or two-dimensional room layout drawing and the CFD mesh model can be created more accurately than when only the thermal image from the infrared sensor 5 is used. By the process of S102, for example, it becomes possible to display the three-dimensional room layout map as shown in FIG. 4 on the display unit 73 of the PDA 7.
  • S103 completes the pre-setting performed before the operation of the air conditioner 1000.
  • the processes of S102 and S103 may be performed by a cloud computer on the Internet.
  • the user sets the operation mode (cooling mode, heating mode, dehumidification mode, etc.) and temperature using the touch panel 731 of the PDA 7 or a remote controller (not shown), and starts the air conditioner 1000.
  • the air conditioner 1000 is started, the compressor 21 starts to operate, and the refrigerant starts to circulate in the refrigerant circuit of the air conditioner 1000. Further, the indoor unit 10 is also controlled by the indoor control device 30 to start operation.
  • FIG. 13 is a flowchart showing the flow of airflow control processing performed by the control unit 71 of the PDA 7 of FIG. The process shown in FIG. 13 is called at each sampling time by the main routine of the remote control application.
  • the control unit 71 updates the previous airflow prediction data to the airflow prediction data calculated one sampling time before, and advances the processing to S202.
  • the airflow prediction data calculated in advance in S103 of FIG. 12 is used as the previous airflow prediction data.
  • the control unit 71 updates the indoor floor plan information in S202, and advances the processing to S203. Specifically, the indoor image captured by the infrared sensor 5 of the indoor unit 10 is acquired from the indoor unit 10, the indoor floor plan information is created, and the position of the human body and the temperature information of the human body are detected. For example, the human body 50 standing upright at a position approaching the indoor unit 10 from the sofa 43 as shown in FIG. 11 can be identified from the image of the infrared sensor 5.
  • the control unit 71 determines in S203 whether the mesh model needs to be updated. Specifically, the image recognition system is used to compare the indoor image of the infrared sensor 5 acquired at the previous sampling time with the infrared camera indoor image acquired at the current sampling time, or the mesh model of FIG. And the mesh model of FIG. 8 is compared. In the comparison, the control unit 71 checks for changes in the position of the human body 50, the position of furniture such as the sofa 43 and the shelf 44, and the position of the closed object that has an ignorable influence on the airflow such as opening and closing of the door 42. To be done.
  • the control unit 71 In the mesh model at the current sampling time, if the human body 50 moves by two mesh sizes or more from the previous sampling time and moves beyond the recalculation area surrounding the human body set at the previous calculation, the control unit 71 , It is determined that the mesh model needs to be updated.
  • control unit 71 updates the mesh model in S204 and advances the process to S205. If the mesh model does not need to be updated (NO in S203), the control unit 71 advances the process to S205.
  • the control unit 71 determines in S205 whether the recalculation of the airflow distribution is necessary. Specifically, the control unit 71 determines whether the process illustrated in FIG. 13 is first performed after the operation of the air conditioner 1000 is started, and when it is determined that the mesh model needs to be updated in S203. It is determined that recalculation of is necessary.
  • the control unit 71 When the recalculation of the airflow distribution is necessary (YES in S205), the control unit 71 performs the instantaneous calculation prediction of the airflow distribution in S206, saves the calculated airflow prediction data in the storage unit 75, and the process proceeds to S207. Proceed. When the recalculation of the airflow distribution is unnecessary (NO in S205), the control unit 71 advances the process to S207. In S207, the control unit 71 displays the indoor three-dimensional flow velocity distribution on the display unit 73 of the PDA 7, and advances the processing to S208.
  • the control unit 71 determines in S208 whether or not there is an airflow changing operation.
  • the user can change the air flow formed by the indoor unit 10 by performing an operation of tracing the air flow with the finger on the touch panel 731 while watching the air flow image on the display unit 73 of the PDA 7.
  • the control unit 71 transmits an airflow changing command according to the airflow changing operation to the air conditioner 1000 in S209, and returns the processing to the main routine.
  • control unit 71 returns the process to the main routine.
  • the timing at which the airflow prediction referred to in the processing of FIGS. 12 and 13 is performed is before the operation of the air conditioner 1000 (S103 of FIG. 12 in the first embodiment), the previous sampling time, and the current sampling time ( In the first embodiment, it is divided into three stages of S206) in FIG.
  • the airflow predictions performed before the operation of the air conditioner 1000, at the previous sampling time, and at the current sampling time are the airflow prediction before the operation, the previous airflow prediction, and the current airflow prediction (instantaneous airflow prediction), respectively.
  • FIG. 14 is a diagram comparing Embodiment 1, a modification of Embodiment 1, and Comparative Examples 1 and 2.
  • Comparative Example 1 has a configuration in which neither the airflow prediction before operation, the previous airflow prediction, nor the current airflow prediction is performed.
  • the cloud service performs the previous airflow prediction and the current airflow prediction by CFD calculation (whole area CFD calculation) for all areas of the mesh model.
  • the modification of the first embodiment has a configuration in which the airflow prediction before the operation is not performed, and the PDA 7 performs the previous airflow prediction and the current airflow prediction by the whole area CFD calculation.
  • the indoor unit 10 plays a role of providing the PDA 7 with the thermal image acquired by the infrared sensor 5, and outputs the airflow prediction data. Do not perform CFD calculation to calculate.
  • the OS is Android (registered trademark)
  • the CPU has a 2.35 GHz octacore
  • the RAM Random Access Memory
  • the resolution of the display unit 73 is 1980 ⁇ 1080. It is a pixel.
  • the number of meshes in the indoor mesh model is about 90,000.
  • a computer of the manufacturer of the air conditioner 1000 is used as a cloud service via the cloud environment.
  • the result of CFD calculation by the manufacturer's computer is transferred to the PDA 7, transferred to the PDA 7 via LAN (Local Area Network) and WiFi communication, and displayed on the display unit 73.
  • the OS is Windows 7 (registered trademark)
  • the CPU is Core i7 (registered trademark)
  • the RAM is 8 GB
  • the resolution is 1980 ⁇ 1080 pixels.
  • FIG. 15 is a diagram showing the instantaneous airflow display time for each of the first embodiment, the modification of the first embodiment, and the comparative examples 1 and 2. It should be noted that in Comparative Example 1, the instantaneous airflow display time is not shown because the airflow image in the room cannot be displayed.
  • the time required to display the airflow image is about 52 seconds.
  • the time required to display the airflow image is about 330 seconds.
  • the time required to display the airflow image is about 430 seconds.
  • the time required to display the airflow image is 100 seconds or more because the airflow prediction data needs to be transferred.
  • the previous airflow prediction data and the current airflow prediction data are calculated by the PDA 7. Therefore, it is not necessary to transfer the airflow prediction data to the PDA 7 from an external computer. Further, by recalculating only a relatively large changed portion in the mesh model such as the movement of the human body, the number of meshes to be recalculated can be reduced as compared with the CFD calculation in the entire area. Therefore, the load of the CFD calculation on the PDA 7 can be reduced as compared to the CFD calculation of the entire area.
  • the time for predicting the instantaneous airflow of the air conditioner 1000 can be shortened as compared with the case of performing the full-area CFD calculation.
  • the time required to display the airflow image can be shortened by about 48 seconds as compared with Comparative Example 2.
  • the airflow distribution in the room displayed on the display unit of the remote control terminal is updated in real time, so that the user can visually recognize the airflow actually experienced. Can be confirmed.
  • the operability of the air flow is improved, and it becomes possible to make subtle air blowing settings that suit the individual taste of the user. Since it becomes easier for the user to adjust the strength of the air blower, the wind contact, etc. to the desired setting, the user's satisfaction with the air conditioner is improved.
  • the air conditioning system according to Embodiment 1 can improve the comfort of the air conditioner.
  • Embodiment 2 In the second embodiment, a case will be described in which the instantaneous airflow prediction in the remote control terminal is performed by a simple calculation for the airflow correction area instead of the partial area CFD calculation.
  • the airflow prediction before operation is the same as in the first embodiment.
  • the basic shapes of human bodies and objects existing in the room such as furniture are approximated as a complex of multiple cylinders and spheres registered in the fluid analysis database.
  • the fluid resistance of the object and the flow velocity distribution around the object are predicted by using the known physical information about the fluid dynamics, ignoring the interaction between the solids forming the approximated object.
  • Known physical information about fluid dynamics may include, for example, a fluid resistance coefficient or a flow velocity distribution state around an object such as a forward flow, a separation point, a wake flow, and an influence of a tilt angle (see “Mechanical Engineering Handbook ⁇ ”). “Basics” published by The Japan Society of Mechanical Engineers, 2012, ⁇ 4-pp.40-48, Section 5.4, downstream, Section 5.5).
  • FIG. 16 is a diagram showing a state in which a human body is approximated as a composite of a cylinder and a sphere.
  • the airflow distribution around the human body is predicted.
  • the head is approximated as a sphere, and the body, two arms, and two legs are each replaced by a cylinder.
  • the interaction of each component is ignored, and the air flow around the sphere and the air flow around the cylinder are independently predicted from the fluid analysis database.
  • the independently predicted airflows are superimposed and predicted as the overall airflow around the human body.
  • the airflow prediction time can be shortened as compared with the first embodiment by performing the instantaneous airflow prediction by the simple calculation.
  • the comfort of the air conditioner can also be improved by the air conditioning system according to the second embodiment.
  • Embodiment 3 In the first and second embodiments, the case has been described where the airflow prediction before driving is performed at the remote operation terminal. In the third embodiment, a case will be described in which air flow prediction before operation is performed by a manufacturer computer on a cloud service. Also in the third embodiment, similar to the second embodiment, the current airflow prediction is performed by the simple calculation.
  • the airflow prediction time can be shortened compared to the first embodiment by performing the instantaneous airflow prediction by the simple calculation.
  • the air conditioning system according to the third embodiment can also improve the comfort of the air conditioner.
  • the CFD calculation is not performed in the remote control terminal in any of the airflow prediction before driving, the previous airflow prediction, and the current airflow prediction, and the database provided by the manufacturer (the CFD calculation result for each model) is used.
  • the database provided by the manufacturer the CFD calculation result for each model
  • a case will be described in which the air flow is predicted with reference to the calculation result and the actual measurement value, and a simple calculation is performed in the remote operation terminal for the air flow correction area.
  • the simple calculation using the fluid analysis database is performed in the instantaneous airflow prediction.
  • the airflow prediction time can be shortened as compared with the first embodiment by performing the current airflow prediction by the simple calculation.
  • the air conditioning system according to Embodiment 4 can also improve the comfort of the air conditioner.
  • FIG. 17 is a diagram comparing Embodiments 1 to 4.
  • FIG. 18 is a diagram showing the instantaneous airflow display time in each of the first to fourth embodiments.
  • the instantaneous airflow display time of the second embodiment is about 21 seconds shorter than the instantaneous airflow display time of the first embodiment.
  • the instantaneous airflow display time of the third and fourth embodiments is about 30 seconds shorter than the instantaneous airflow display time of the first embodiment.
  • CFD calculation is not performed during operation of the air conditioner, and instantaneous airflow prediction is performed by simple calculation using a fluid analysis database such as known physical information.
  • the time required for predicting the instantaneous airflow can be shortened as compared with the first embodiment.
  • the error between the actual airflow distribution and the predicted airflow distribution may be accumulated in the previous airflow prediction data.
  • the entire region CFD calculation is regularly performed in the cloud service during the operation of the air conditioner, and the previous airflow prediction data is updated.
  • the manufacturer of the air conditioner may have an airflow characteristic database for the individual air conditioner.
  • the airflow characteristic database is, for example, a database of where and how much wind speed is generated by the rotation speed of the blower fan and the wind direction adjusting mechanism (upper and lower wind direction plates and left and right wind direction plates) for each model of the air conditioner.
  • the user since the user performs the air flow operation using the PDA, it is possible to estimate the difference between the indoor air flow distribution prediction and the actual air flow state to some extent through the reaction of the user.
  • By repeating deep learning using the database as a teaching material it is possible to improve the accuracy of the instantaneous airflow prediction during operation of the air conditioner, and it is possible to provide the airflow more suitable to the user's preference.
  • the airflow distribution based on the instantaneous airflow prediction is displayed on the display unit of the PDA has been described.
  • the airflow distribution based on the instantaneous airflow prediction may be displayed on the remote controller of the air conditioner.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un terminal d'actionnement à distance (7) destiné à une machine de climatisation ayant une unité intérieure (10) qui souffle de l'air dans un espace précis. L'unité intérieure (10) comprend un capteur d'imagerie (5) afin d'acquérir une première image de l'espace précis. Le terminal d'actionnement à distance (7) est pourvu d'une unité de communication, d'une unité d'affichage (73) et d'une unité de commande. L'unité de communication est en communication sans fil avec l'unité intérieure. L'unité de commande reçoit la première image de l'unité intérieure par l'intermédiaire de l'unité de communication. L'unité de commande possède la fonction de créer, sur la base de la première image, une seconde image constituant une image tridimensionnelle de l'espace précis, et la fonction d'afficher, sur l'unité d'affichage (73), une image composite (51a) obtenue par superposition, sur la seconde image, d'une distribution tridimensionnelle du courant d'air (61a) à l'intérieur de l'espace précis, dérivée par simulation en fonction d'une dynamique de fluide numérique.
PCT/JP2018/040256 2018-10-30 2018-10-30 Terminal d'actionnement à distance et système de climatisation associé WO2020089996A1 (fr)

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CN113864970A (zh) * 2021-09-09 2021-12-31 珠海格力电器股份有限公司 空调手操器控制处理方法、装置、服务器及空调系统

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