WO2018193561A1 - Climatiseur - Google Patents

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Publication number
WO2018193561A1
WO2018193561A1 PCT/JP2017/015763 JP2017015763W WO2018193561A1 WO 2018193561 A1 WO2018193561 A1 WO 2018193561A1 JP 2017015763 W JP2017015763 W JP 2017015763W WO 2018193561 A1 WO2018193561 A1 WO 2018193561A1
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WO
WIPO (PCT)
Prior art keywords
control
air conditioner
area
read
microcontroller
Prior art date
Application number
PCT/JP2017/015763
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English (en)
Japanese (ja)
Inventor
加藤　崇行
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 PCT/JP2017/015763 priority Critical patent/WO2018193561A1/fr
Publication of WO2018193561A1 publication Critical patent/WO2018193561A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/06—Addressing a physical block of locations, e.g. base addressing, module addressing, memory dedication

Definitions

  • the present invention relates to an air conditioner that stores control information.
  • control parameters necessary for various controls such as activation of the air conditioner and operation control for operating a compressor provided in the outdoor unit are stored.
  • the control parameters are read-only memory (Read Only Memory: ROM) of the microcontroller that controls the air conditioner, or EEPROM (Electrically Erasable Programmable Read-Only) that is a non-volatile memory provided outside the control microcontroller. Memory). Then, the microcontroller reads out various control parameters from the storage unit as necessary to control the air conditioner.
  • ROM Read Only Memory
  • EEPROM Electrical Erasable Programmable Read-Only
  • the outdoor unit and the indoor unit start communication. And each of an outdoor unit and an indoor unit starts the preparation process for starting.
  • the microcontroller reads out control data necessary for control such as startup and operation control from a storage unit such as an EEPROM.
  • the air conditioner uses different control data depending on the specifications of the model. Furthermore, even if the specifications of the models are the same, the control data used may differ depending on the destination.
  • control parameters stored in the storage unit are properly used according to the specifications of the model and the destination.
  • the control program including reading of the control parameters from the storage unit in the microcontroller and the control parameters stored in the storage unit need to be different for each model specification and destination, and multiple types are prepared.
  • the management of the control parameters and the control program for the microcontroller to read the control parameters becomes more manageable. It was complicated.
  • management of control parameters and control programs becomes more complicated.
  • the type of data to be prepared becomes one type, and there is no need to prepare a plurality.
  • the microcontroller since the capacity of the control program and control parameters stored in the storage unit increases, the microcontroller reads the control program and control parameters for reading out the control parameters stored in the storage unit. There was a problem that time would increase.
  • Patent Document 1 discloses that a control parameter required after the next step is read from a nonvolatile memory during execution of a predetermined startup step.
  • control parameters and fluctuation data that require a long time to read from a non-volatile memory are not read continuously until the reading is completed, but in units necessary for subsequent operation control.
  • the start-up time is shortened by dividing and sequentially reading at least during a predetermined period necessary for starting the image forming apparatus.
  • Patent Document 2 stores machine-specific fixed values inside the engine control unit, writes machine-specific fixed values to other EEPROMs, and stores them in data stored in FROM (Flash Read Only Memory) and EEPROM.
  • a technique is disclosed in which startup is shortened by comparing only data with a changed value and reading only a changed value.
  • JP 2004-302010 A Japanese Patent Laying-Open No. 2015-38703
  • both EEPROM and FROM must be installed.
  • both the EEPROM and FROM data must be managed, and a control program for controlling each of the EEPROM and FROM must be created. Processing becomes complicated and management becomes complicated.
  • the present invention has been made in view of the above, and it is an air conditioner in which the time for reading the control parameters stored in the storage unit is short and the control program for the microcontroller to read the control parameters can be easily managed. The purpose is to obtain.
  • an air conditioner is an air conditioner including an outdoor unit in which a refrigerant is circulated between the indoor unit and the indoor unit, A non-volatile memory for storing control data including a plurality of control parameters that are set for each air conditioner control specification and used for the operation of the air conditioner, and the control parameters stored in the non-volatile memory are read out. And a control unit for controlling the operation of the air conditioner based on the control parameters.
  • designation information for designating the control specifications is arranged in the first area where the control data is first read when the control data is read, and the control parameter is set when the control data is read.
  • the control data is arranged in a second area that is read after the first area in the control data, and the control unit reads the designation information from the first area and then controls the control parameter corresponding to the designation information from the second area. Is read.
  • the air conditioner according to the present invention has an effect that the time for reading the control parameter stored in the storage unit is short, and the management of the control program for the microcontroller to read the control parameter becomes easy.
  • the schematic diagram which shows the structure of the air conditioner concerning Embodiment 1 of this invention. Functional block diagram regarding control in the outdoor unit of the air conditioner according to the first embodiment of the present invention.
  • the figure which shows an example of the hardware constitutions of the processing circuit in Embodiment 1 of this invention.
  • the flowchart which shows the flow of operation
  • FIG. 1 is a schematic diagram illustrating a configuration of an air conditioner 100 according to the first embodiment of the present invention.
  • FIG. 2 is a functional block diagram relating to control in the outdoor unit 22 of the air conditioner 100 according to the first embodiment of the present invention.
  • the air conditioner 100 according to the first embodiment includes an indoor unit 21 disposed indoors and an outdoor unit 22 disposed outdoor.
  • the indoor unit 21 and the outdoor unit 22 are connected by a refrigerant pipe 23 and a refrigerant pipe 33.
  • the indoor unit 21 and the outdoor unit 22 are capable of information communication.
  • the indoor unit 21 includes, as main components, an indoor heat exchanger 24 that is an indoor heat exchanger connected to the refrigerant pipe 23 and the refrigerant pipe 33, and an indoor that forms an airflow that passes through the indoor heat exchanger 24.
  • Fan 25 is installed. The indoor fan 25 operates when the indoor propeller 26 is driven by the indoor fan motor 27.
  • the outdoor unit 22 includes, as main components, a four-way valve 28 that switches a refrigerant flow direction, a compressor 17 that liquefies the refrigerant, and an outdoor heat exchanger that is connected to the refrigerant pipe 23 and the refrigerant pipe 33.
  • An outdoor heat exchanger 29, an outdoor fan 30 that forms an airflow passing through the outdoor heat exchanger 29, and a microcontroller 11 that is a control unit that controls the operation of the air conditioner 100 are installed.
  • the outdoor fan 30 operates when the outdoor propeller 31 is driven by the outdoor fan motor 32.
  • the indoor unit 21, the refrigerant pipe 33, the outdoor unit 22, and the refrigerant pipe 23 constitute a refrigerant circulation circuit.
  • the compressor 17, the four-way valve 28, the outdoor heat exchanger 29, and the indoor heat exchanger 24 are sequentially connected in an annular manner by the refrigerant pipe 23 and the refrigerant pipe 33 to constitute a refrigeration cycle.
  • the refrigerant pipe 23 and the refrigerant pipe 33 are pipes that connect the indoor heat exchanger 24 and the outdoor heat exchanger 29 to circulate the refrigerant.
  • the compressor 17 incorporated in the refrigerant circulation circuit returns the discharged refrigerant from the outdoor heat exchanger 29 to the indoor heat exchanger 24.
  • the outdoor unit 22 converts the microcontroller 11 serving as a control unit, the AC power supply unit 14 supplied with external power from the outside of the air conditioner 100, and the voltage supplied from the AC power supply unit 14 to convert the microcontroller 11 and the air conditioner.
  • a power supply circuit 12 that generates a dedicated power supply for operating other components in the machine 100 is provided.
  • the outdoor unit 22 includes an outdoor fan drive circuit 13 that controls the outdoor fan 30, a converter circuit 15 that is a circuit for boosting the voltage of the power source converted from AC to DC and improving the power factor, and the compressor 17.
  • the inverter circuit 16 which is a circuit for supplying an alternating current and an alternating voltage, a compressor 17, a four-way valve switching circuit 18 for controlling the four-way valve 28, and a nonvolatile memory for storing various types of information necessary for air conditioning processing in the air conditioner 100
  • the memory 19 is provided.
  • the AC power supply unit 14 supplies power of 50 Hz or 60 Hz, 100 V or 200 V in Japan.
  • the microcontroller 11 is a control unit that controls the operation of the air conditioner 100, and controls the indoor unit 21 and the outdoor unit 22.
  • the microcontroller 11 stores a plurality of control parameters that are set for each control specification of the air conditioner 100 and used for the operation of the air conditioner 100 in the nonvolatile memory 19 when the air conditioner 100 is started. Read from the control data. Further, the microcontroller 11 can change and add control data stored in the nonvolatile memory 19 depending on the type of the nonvolatile memory 19.
  • the microcontroller 11 starts the air conditioner 100 according to the control parameters read from the nonvolatile memory 19, and thereafter controls the operation of the air conditioner 100.
  • the control program for executing the process for the microcontroller 11 to read out the control parameter from the nonvolatile memory 19 is an individual program corresponding to the control specification designation information after reading out only the control specification designation information from the first area 51 as will be described later. Only one type for performing processing for reading out only the control data from the second area 52 is configured.
  • the microcontroller 11 changes the compressor frequency, which is the frequency of electric power for driving the compressor 17, in order to change the control state of the outdoor unit 22 depending on the state of the outdoor unit 22 or receiving a signal from the indoor unit 21. It has a function to control.
  • the microcontroller 11 is realized, for example, as a processing circuit having a hardware configuration shown in FIG.
  • FIG. 3 is a diagram illustrating an example of a hardware configuration of the processing circuit according to the first embodiment of the present invention.
  • the microcontroller 11 is realized by the processor 101 executing a program stored in the memory 102.
  • a plurality of processors and a plurality of memories may cooperate to realize the above function.
  • a part of the function of the microcontroller 11 may be mounted as an electronic circuit, and the other part may be realized using the processor 101 and the memory 102.
  • As the memory 102 a ROM and a random access memory (RAM) are used.
  • the nonvolatile memory 19 stores control data including a plurality of control parameters that are set for each control specification of the air conditioner 100 and used for the operation of the air conditioner 100.
  • the operation of the air conditioner 100 is controlled by the microcontroller 11 based on a basic control method, that is, a basic control program, but is used for controlling the air conditioner 100 in the microcontroller 11 depending on the specifications of the model.
  • Control parameters that are individual control data differ.
  • the air conditioner 100 may have different control parameters that are individual control data used depending on the destination even when the specifications of the models are the same.
  • the air conditioner 100 adjusts the control method according to the specifications of the model or the destination by changing the control parameters to be used. Therefore, the control specification here corresponds to the control method of the air conditioner 100 using the control parameters for each specification of the air conditioner 100.
  • control parameters that is the individual control data to be used in order to enable control even when at least one of the specification of the model or the destination is different as the control parameter that is the individual control data to be used, a plurality of different control parameters are nonvolatile. It is stored in the memory 19. Accordingly, control with different control parameters to be used has different control specifications.
  • the control data including the control parameters is stored in the non-volatile memory 19 so as not to disappear even when the power is turned off due to the nature of the data.
  • an EEPROM is used for the nonvolatile memory 19.
  • FIG. 4 is an image diagram of control data stored in the nonvolatile memory 19 of the air conditioner 100 according to the first embodiment of the present invention.
  • the control data 50 is placed in the first area 51, which is the first area where the control data 50 is first read when the control data 50 is read, That is, it is described.
  • the control specification designation information is designation information for designating a control specification corresponding to the air conditioner 100 among a plurality of control specifications that differ depending on the specification of the air conditioner model and each destination. It is. Therefore, the first area 51 can be paraphrased as a control specification designation information area in which control specification designation information is stored.
  • control specification designation information multiple control specifications can be set.
  • the control specification designation information is described in the first area 51 in the order in which the microcontroller 11 reads the control parameters when the microcontroller 11 reads the control parameters corresponding to the control specification designation information. That is, the order of the control parameters to be read by the microcontroller 11 can be designated by the order of description of the control specification designation information in the first area 51.
  • control specification n a name assigned to each control specification such as “control specification n” can be used.
  • n is a positive integer of 1 or more and N or less. Therefore, for example, individual control specification designation information includes “control specification 1”, “control specification 2”, “control specification 3”,..., “Control specification N ⁇ 1”, “control specification N”, and so on.
  • the name given individually for every control specification can be used.
  • N is a positive integer of 1 or more. Note that the name and form of the control specification designation information are not limited as long as they can be associated with the control specification.
  • control parameter corresponding to the control specification designation information that is, the control parameter corresponding to the control specification designated by the control specification designation information is greater in the control data 50 than in the first area 51 when the control data 50 is read. It is arranged in the second area 52 where reading is performed later.
  • the control parameter corresponding to the control specification designation information is described in the control data 50 in, for example, an area having the same name as the control specification designation information. Therefore, the second area 52 can be restated as a control parameter area in which control parameters are stored.
  • the control data 50 is created by placing control specification designation information for identifying a control specification in a portion relatively before the control parameter corresponding to the identification information. It is remembered.
  • the image diagram of the storage area of the nonvolatile memory 19 in the state where the control data 50 is stored is the same as FIG. That is, in the nonvolatile memory 19 according to the first embodiment, a first storage area (not shown) in which control specification designation information is stored and a second storage area (not shown) in which control parameters corresponding to the control specification designation information are stored.
  • the storage area is divided and provided. That is, in the nonvolatile memory 19, control specification designation information for designating a control specification is arranged in the first storage area that is the first area that is first read when the stored control data 50 is read.
  • the control parameter corresponding to the identification information is arranged in the second storage area that is read after the first storage area when the stored control data 50 is read.
  • the microcontroller 11 first reads control specification designation information from the first area 51 when reading from the control data 50 stored in the nonvolatile memory 19 when the air conditioner 100 is started. Next, based on the control specification designation information read from the first area 51, the microcontroller 11 reads out control parameters that are individual control data corresponding to the control specification designation information from the second area 52. Therefore, the area where the microcontroller 11 reads the control parameter from the second area 52 can be changed by changing the control specification designation information. Then, the microcontroller 11 activates the air conditioner 100 according to the control parameters read from the nonvolatile memory 19, and thereafter controls the operation of the air conditioner 100.
  • FIG. 5 is a flowchart showing an operation flow of the air conditioner 100 according to the first embodiment.
  • the operation shown in FIG. 5 shows the operation in the outdoor unit 22 when the air conditioner 100 is activated.
  • step S ⁇ b> 10 the power supply circuit 12 generates a dedicated power source for operating each component in the outdoor unit 22 from the AC power source and supplies the dedicated power source to each component in the outdoor unit 22 including the microcontroller 11. .
  • Each component in the outdoor unit 22 starts to be driven by the power supplied from the power supply circuit 12.
  • a power supply circuit that generates a dedicated power source for operating each component in the indoor unit 21 from an AC power source and supplies the dedicated power source to each component in the indoor unit 21 is an indoor unit. 21 is also provided.
  • step S20 the microcontroller 11 sets the control specification designation information of the first area 51 in the control data 50 stored in the nonvolatile memory 19 as follows. Read in the order described in the first area 51.
  • step S ⁇ b> 30 the microcontroller 11 changes the name of “control specification n” in the second area 52 of the control data 50 from the second area 52 in the control data 50 stored in the nonvolatile memory 19. Read the data for individual control of the attached area. That is, the microcontroller 11 reads the control parameter corresponding to the read control specification designation information from the second area 52 in the control data 50 stored in the nonvolatile memory 19. The microcontroller 11 reads the individual control data in the area of the control specification n in the order in which the control specification designation information is read from the first area 51.
  • step S40 the microcontroller 11 performs the individual control for the area of the control specification N which is the control specification designation information read last from the second area 52 in the control data 50 stored in the nonvolatile memory 19. Determine whether data has been read.
  • step S40 the microcontroller 11 returns to step S30 and repeats the reading of the individual control data.
  • step S40 If it is determined that the individual control data in the area of the control specification N has been read, that is, if Yes in step S40, the microcontroller 11 in step S50 selects all the individual control data corresponding to the read control specification designation information. It is determined that the data has been read, and reading of the individual control data from the second area 52 is completed. Thereafter, the microcontroller 11 controls the activation and operation of the air conditioner 100 based on the read individual control data.
  • control specification 1”, “control specification 2”, and “control specification 4” are set in the first area 51
  • the microcontroller 11 receives control specification designation information from the first area 51.
  • “Control specification 1”, “Control specification 2” and “Control specification 4” are read in this order.
  • the microcontroller 11 first reads the individual control data corresponding to “control specification 1” that is the control specification designation information, that is, the control parameters from the second area 52. That is, the microcontroller 11 reads the individual control data in the area having the name “control specification 1” that is the same name as the control specification designation information in the second area 52 of the control data 50.
  • control specification designation information “control specification 2” from the second area 52 is displayed.
  • the individual control data corresponding to, that is, the control parameters are read. That is, the microcontroller 11 reads the individual control data in the area having the name “control specification 2”, which is the same name as the control specification designation information, in the second area 52 of the control data 50.
  • control specification designation information “control specification 4” is read from the second area 52. ”, That is, the control parameters are read. That is, the microcontroller 11 reads the individual control data in the area having the name “control specification 4”, which is the same name as the control specification designation information, in the second area 52 of the control data 50. In this case, since the control specification 3 is not set in the first area 51, the microcontroller 11 reads the individual control data corresponding to “control specification 3” which is the control specification designation information, that is, the control parameter. Absent.
  • the microcontroller 11 When the microcontroller 11 completes reading of the individual control data in the area labeled “control specification 4” in the second area 52, the microcontroller 11 stores all the individual control data corresponding to the read control specification designation information. It is determined that the data has been read, and reading of the individual control data from the second area 52 is completed.
  • the area read by the microcontroller 11 in the second area 52 may be designated in the control specification designation information, or the microcontroller 11 may search from the control data 50 based on the control specification designation information.
  • FIG. 6 is an image diagram of a combination of the program of the microcontroller 11 for reading the control parameters in the air conditioner 100 according to the first embodiment and the control data 50 stored in the nonvolatile memory 19.
  • the control data 61 for the control specifications 1 the control data 62 for the control specifications 2
  • the control data 63 for the control specifications 3 the control data 50 can be read.
  • the arrangement place of the microcontroller 11 is not limited to the outdoor unit 22. That is, the microcontroller 11 may be arranged in the indoor unit 21.
  • EEPROM is relatively cheap compared to flash memory. For this reason, by using an EEPROM for the nonvolatile memory 19, it is possible to obtain the above-described effects without increasing the price of the device as compared with the case where a flash memory is used for the nonvolatile memory 19.
  • control data 50 for each control specification is not stored in the first area 51 and the second area 52 and is stored in the nonvolatile memory 19 and the control specification cannot be specified, the micro data The controller 11 needs to read out all data stored in the non-volatile memory 19 and then execute control processing, which slows the startup time.
  • the microcontroller 11 reads only the control specification designation information from the first area 51, and only the individual control data corresponding to the control specification designation information is second. Read from area 52. For this reason, in the air conditioner 100, only necessary data can be efficiently read, and the startup time is shortened.
  • the microcontroller 11 prepares one type of control program for executing the process of reading the individual control data and the control data 50 for each control specification.
  • the startup time can be shortened, and management of the control program and control data of the microcontroller 11 is easy.
  • the control data 50 may include individual control data that may be specified, that is, all of the control parameters, and a plurality of individual control data classified according to an arbitrary standard. May be included.
  • the control specification designation information based on the destination and model specification information is arranged in the first area 51 of the nonvolatile memory 19. Then, when the power is turned on and stable power is supplied to the microcontroller 11, and when reading the data in the nonvolatile memory 19, the microcontroller 11 first loads the first area which is the head area of the nonvolatile memory 19. 51 is read to recognize the control specification. Then, the microcontroller 11 reads the individual control data corresponding to the control specification.
  • the time for reading the control parameters stored in the nonvolatile memory 19 is short, and the management of the control program for the microcontroller 11 to read the control parameters is easy. There is an effect that an air conditioner can be obtained.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
  • Microcontroller 12 Power supply circuit, 13 Outdoor fan drive circuit, 14 AC power supply, 15 Converter circuit, 16 Inverter circuit, 17 Compressor, 18 Four-way valve switching circuit, 19 Non-volatile memory, 21 Indoor unit, 22 Outdoor unit, 23 refrigerant piping, 24 indoor heat exchanger, 25 indoor fan, 26 indoor propeller, 27 indoor fan motor, 28 four-way valve, 29 outdoor heat exchanger, 30 outdoor fan, 31 outdoor propeller, 32 outdoor fan motor, 33 refrigerant piping, 50 control data, 51 1st area, 52 2nd area, 100 air conditioner, 101 processor, 102 memory.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

En ce qui concerne des données de commande, des informations de désignation permettant de désigner une caractéristique de commande sont agencées dans une première région (51) à partir de laquelle la lecture des données de commande est d'abord effectuée lorsque les données de commande sont lues, et des paramètres de commande correspondant aux informations de désignation sont agencés dans une seconde région (52) à partir de laquelle la lecture des données de commande est effectuée après la première région (51) lorsque les données de commande sont lues. Une unité de commande lit les informations de désignation à partir de la première région (51) et lit ensuite le paramètre de commande correspondant aux informations de désignation provenant de la seconde région (52).
PCT/JP2017/015763 2017-04-19 2017-04-19 Climatiseur WO2018193561A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113950601A (zh) * 2019-06-07 2022-01-18 大金工业株式会社 设备管理系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332591A (ja) * 1992-05-29 1993-12-14 Hitachi Ltd 空気調和機の制御装置
JPH09265391A (ja) * 1996-03-27 1997-10-07 Victor Co Of Japan Ltd プログラムｒｏｍ訂正機能付き制御装置及び同制御装置を有する電子機器並びにプログラムの訂正方法
JP2001082787A (ja) * 1999-09-09 2001-03-30 Daikin Ind Ltd 電気機器の制御定数書き込み方法および電装品アセンブリの検査方法
JP2003099277A (ja) * 2001-09-25 2003-04-04 Daikin Ind Ltd データ格納方法及びデータ格納装置
JP2005195303A (ja) * 2004-01-09 2005-07-21 Sanyo Electric Co Ltd 空気調和装置
JP2006065505A (ja) * 2004-08-25 2006-03-09 Sony Corp メモリーカード及び再生装置
JP2011170580A (ja) * 2010-02-18 2011-09-01 Seiko Epson Corp メモリー制御装置およびプログラム並びにメモリー制御方法
JP2014194309A (ja) * 2013-03-29 2014-10-09 Hitachi Appliances Inc 空調システム

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332591A (ja) * 1992-05-29 1993-12-14 Hitachi Ltd 空気調和機の制御装置
JPH09265391A (ja) * 1996-03-27 1997-10-07 Victor Co Of Japan Ltd プログラムｒｏｍ訂正機能付き制御装置及び同制御装置を有する電子機器並びにプログラムの訂正方法
JP2001082787A (ja) * 1999-09-09 2001-03-30 Daikin Ind Ltd 電気機器の制御定数書き込み方法および電装品アセンブリの検査方法
JP2003099277A (ja) * 2001-09-25 2003-04-04 Daikin Ind Ltd データ格納方法及びデータ格納装置
JP2005195303A (ja) * 2004-01-09 2005-07-21 Sanyo Electric Co Ltd 空気調和装置
JP2006065505A (ja) * 2004-08-25 2006-03-09 Sony Corp メモリーカード及び再生装置
JP2011170580A (ja) * 2010-02-18 2011-09-01 Seiko Epson Corp メモリー制御装置およびプログラム並びにメモリー制御方法
JP2014194309A (ja) * 2013-03-29 2014-10-09 Hitachi Appliances Inc 空調システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113950601A (zh) * 2019-06-07 2022-01-18 大金工业株式会社 设备管理系统

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