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WO2022013926A1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
WO2022013926A1
WO2022013926A1 PCT/JP2020/027277 JP2020027277W WO2022013926A1 WO 2022013926 A1 WO2022013926 A1 WO 2022013926A1 JP 2020027277 W JP2020027277 W JP 2020027277W WO 2022013926 A1 WO2022013926 A1 WO 2022013926A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
power
time
refrigerator
surplus power
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/027277
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English (en)
Japanese (ja)
Inventor
達也 梅田
康成 大和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2020/027277 priority Critical patent/WO2022013926A1/fr
Priority to JP2022536004A priority patent/JPWO2022013926A1/ja
Publication of WO2022013926A1 publication Critical patent/WO2022013926A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating

Definitions

  • This disclosure relates to a refrigerator to which power is supplied from a power supply system.
  • the defrosting operation of the refrigerator In the defrosting operation of the refrigerator, electric current is passed through the heater to melt the frost adhering to the cooler, so the power consumption is higher than in the normal cooling operation. In addition, if the defrosting operation is stopped and the cooling operation is started before the refrigerator completely removes the frost adhering to the cooler, the frost that has not completely melted remains attached to the cooler and is cooled. The function is reduced. Therefore, it is desirable that the defrosting operation of the refrigerator suppresses power consumption and does not stop in the middle.
  • the power supply system disclosed in Patent Document 1 is a refrigerator that calculates the defrosting operation time and the completion time limit, and information processing that transmits information on the start time of the defrosting operation to the refrigerator with respect to the information calculated by the refrigerator. It has a terminal device.
  • the information processing terminal device estimates the power surplus time zone from the temporal transition of the power generated by the solar power generation device, and if the estimated power surplus time zone exists for the defrosting operation time, the cooling operation should be started. Find the start time of the defrosting operation in time for the time limit.
  • This disclosure is made to solve the above-mentioned problems, and provides a refrigerator that can better utilize the surplus electric power generated by the power generation device using natural energy.
  • the refrigerator according to the present disclosure is a refrigerator to which power is supplied from a power supply system including a power generation device using natural energy, and is based on historical information of the power generated by the power generation device and the total power consumption of the electric device including the refrigerator.
  • a communication device that communicates with a server that predicts the future transition of surplus electricity, a storage room that stores storage, a temperature sensor that detects the temperature of the air in the storage room, and a refrigerant that circulates in the storage room. It has a refrigerant circuit for cooling the air and a control device for operating the refrigeration cycle of the refrigerant circulating in the refrigerant circuit, and the control device maintains the temperature detected by the temperature sensor at a set temperature.
  • the surplus power is a time zone in which the surplus power is obtained. It has a guessing means for estimating a time zone and a setting changing means for changing the set temperature to a temperature lower than a predetermined reference temperature in the surplus power time zone estimated by the guessing means.
  • the refrigerator performs a cold storage operation in which the set temperature is set to a temperature lower than the reference temperature during the surplus power time zone estimated by the guessing means, so that cold heat is stored in the storage and heat is generated.
  • Surplus electricity can be stored in the storage as energy. Since the refrigerator can be operated for cold storage even if the time zone when there is surplus power is short, the opportunity to use the surplus power from the power generation device using natural energy increases, and the surplus power can be further utilized.
  • FIG. It is a figure which shows an example of the power supply system which supplies electric power to the refrigerator which concerns on Embodiment 1.
  • FIG. It is a block diagram which shows one configuration example of the power management apparatus shown in FIG. It is a block diagram which shows one configuration example of the management server shown in FIG. It is a figure which shows an example of the transition of surplus power predicted by the management server shown in FIG. It is a table which shows an example of the information of the predicted transition which shows the transition of the surplus power predicted by the management server shown in FIG. It is a figure which shows an example of the refrigerant circuit which the refrigerator which concerns on Embodiment 1 has. It is an external front view which shows one configuration example of the refrigerator which concerns on Embodiment 1.
  • FIG. 7 It is an external front view which shows each storage room of the refrigerator shown in FIG. 7. It is a side perspective view of the refrigerator shown in FIG. 7. It is a front schematic diagram which shows the state which the door of the refrigerating room shown in FIG. 7 is opened. It is a block diagram which shows the main control board shown in FIG. 9 and the apparatus connected with the main control board. It is a functional block diagram which shows one configuration example of the control apparatus shown in FIG. It is a flowchart which shows an example of the operation procedure of the refrigerator which concerns on Embodiment 1. FIG. It is a flowchart which shows an example of the operation procedure of the refrigerator which concerns on Embodiment 1. FIG.
  • FIG. 1 is a diagram showing an example of a power supply system that supplies electric power to the refrigerator according to the first embodiment.
  • the power supply system 2 is provided in the house of the user who owns the refrigerator 1 of the first embodiment.
  • the power supply system 2 has a power generation device 3 that uses natural energy to generate power, and a power management device 4 that controls power supply to electrical equipment installed in a house.
  • a refrigerator 1 and other electric devices 5 are connected to the power management device 4.
  • the electric power generated by the power generation device 3 is supplied to the refrigerator 1 and the electric device 5 via the power management device 4.
  • the power generation device 3 is, for example, a solar power generation device or a wind power generation device. In the first embodiment, the case where the power generation device 3 is a solar power generation device will be described.
  • the power management device 4 is connected to the management server 42 via the network 7.
  • the network 7 is, for example, the Internet.
  • the management server 42 is connected to the weather server 43 via the network 7.
  • the refrigerator 1 and the electric device 5 are connected to the management server 42 via the power management device 4 and the network 7.
  • FIG. 1 shows a case where there is one electric device 5 other than the refrigerator 1, but the electric devices installed in the house are not limited to two, the refrigerator 1 and the electric device 5, but three or more. You may.
  • the case where the electric equipment installed in the house shown in FIG. 1 is the refrigerator 1 and the electric equipment 5 will be described.
  • FIG. 2 is a block diagram showing a configuration example of the power management device shown in FIG.
  • the power management device 4 includes a power conversion unit 81, a power supply unit 82, a control device 83, and a communication device 36.
  • the control device 83 is, for example, a microcomputer.
  • the control device 83 has a memory (not shown) for storing a program and a CPU (Central Processing Unit) (not shown) for executing processing according to the program.
  • a CPU Central Processing Unit
  • the power conversion unit 81 converts the DC power generated by the power generation device 3 into AC power.
  • Commercial power Pc is input from the commercial power system 6 to the power supply unit 82, and AC power is input from the power conversion unit 81.
  • the control device 83 monitors the power generated Ps by the power generation device 3 and the total power consumption Pt which is the total value of the power consumption of the refrigerator 1 and the electric device 5.
  • the control device 83 compares the generated power Ps with the total power consumption Pt, and determines whether or not the generated power Ps is larger than the total power consumption Pt and has a sufficient margin. For example, the control device 83 determines whether or not the power difference Pdiv, which is a value obtained by subtracting the total power consumption Pt from the generated power Ps, is larger than the predetermined threshold Pth. As a result of the comparison determination, when the power difference Pdiv is larger than the threshold Pth, the control device 83 causes the power supply unit 82 to use the generated power ps to supply power to the refrigerator 1 and the electric device 5.
  • the control device 83 supplies the power supply unit 82 with the generated power Ps and the commercial power Pc to supply the power to the refrigerator 1 and the electric device 5. Let me use it. In this way, when the power demand of all the electric devices installed in the user's house cannot be satisfied by the generated power Ps, the commercial power Pc is used to supplement the power demand.
  • control device 83 transmits the value of the total power consumption Pt of all the electric devices in the house where the refrigerator 1 is installed to the management server 42 at a fixed cycle.
  • control device 83 receives the information on the predicted transition of the surplus power Pr from the management server 42, the control device 83 transmits the information on the predicted transition of the surplus power Pr to the refrigerator 1 and the electric device 5 via the communication device 36.
  • the predicted transition of the surplus power Pr will be described later.
  • the meteorological server 43 is a server operated by the Japan Meteorological Agency or a meteorological service provider.
  • the meteorological server 43 transmits past meteorological history, meteorological forecasts, and other meteorological information to the management server 42.
  • the meteorological information is, for example, information on forecasts and actual results of meteorological conditions such as weather, temperature, amount of solar radiation, sunshine duration, and wind direction.
  • FIG. 3 is a block diagram showing a configuration example of the management server shown in FIG.
  • the management server 42 has a storage device 91 and a control device 92.
  • the storage device 91 is, for example, an HDD (Hard Disk Drive).
  • the control device 92 is, for example, a microcomputer.
  • the control device 92 has a memory (not shown) for storing a program and a CPU (not shown) for executing processing according to the program.
  • the control device 92 receives the weather information from the weather server 43.
  • the control device 92 receives the value of the total power consumption Pt from the power management device 4 at a fixed cycle, and stores the history of the total power consumption Pt for a certain period in the past in the storage device 91.
  • the control device 92 predicts the future transition of the power generated by the power generation device 3 based on the weather information received from the weather server 43.
  • the control device 92 predicts the future transition of the total power consumption Pt of the refrigerator 1 and the electric device 5 from the history information of the past total power consumption Pt stored in the storage device 91. Further, the control device 92 predicts the transition of the surplus power Pr for the house shown in FIG. 1 based on the prediction result of the future transition of the generated power Ps and the prediction result of the future transition of the total power consumption Pt. do.
  • the surplus power Pr is the remaining power after subtracting the total power consumption Pt during normal operation of the refrigerator 1 and the electric device 5 from the power Ps generated by the power generation device 3.
  • the control device 92 performs a process of predicting the transition of the generated power Ps, the total power consumption Pt, and the surplus power Pr at each predetermined time interval Tint1. Every time the control device 92 predicts the transition of the surplus power Pr, the control device 92 transmits the forecast transition information indicating the prediction of the transition of the surplus power Pr to the power management device 4 via the network 7.
  • the management server 42 predicts the transition of the surplus power Pr for one house.
  • information on the total power consumption Pt is collected from each of the plurality of houses, and each house is used.
  • the transition of the surplus power Pr may be predicted.
  • the management server 42 collects and analyzes information on a large amount of total power consumption Pt for a plurality of houses having the same type and number of electric devices, so that the surplus power Pr of the houses having the same type and number of electric devices can be used. The accuracy of transition prediction is improved.
  • FIG. 4 is a diagram showing an example of the transition of surplus power predicted by the management server shown in FIG. FIG. 4 shows the relationship between the generated power Ps, the total power consumption Pt, and the transition of the surplus power Pr.
  • the vertical axis of FIG. 4 indicates electric power, and the horizontal axis indicates time.
  • the transition of the generated power Ps is shown by a solid line, and the transition of the total power consumption Pt is shown by a broken line.
  • the surplus power Pr is obtained by subtracting the total power consumption Pt from the generated power Ps.
  • the surplus power Pr is shown in the shaded area.
  • FIG. 5 is a table showing an example of forecast transition information showing the transition of surplus power predicted by the management server shown in FIG.
  • the predicted transition of the surplus power Pr is information indicating the prediction of the transition of the surplus power Pr from the current time to the lapse of a certain time.
  • the information on the predicted transition of the surplus power Pr shown in FIG. 5 is such that the predetermined management time TM1 is divided into sections of the predetermined time interval Tint2, and the surplus power Pr of each section is described.
  • the management time TM1 is 24 hours and the time interval Tint2 is 2 hours.
  • FIG. 6 is a diagram showing an example of a refrigerant circuit included in the refrigerator according to the first embodiment.
  • the refrigerator 1 has a compressor 11, a heat sink 44, an expansion device 45, and a cooler 12.
  • the compressor 11, the heat sink 44, the expansion device 45, and the cooler 12 are connected by a refrigerant pipe to form a refrigerant circuit 46 in which the refrigerant circulates.
  • the compressor 11 sucks in the refrigerant, compresses the sucked refrigerant, and discharges it.
  • the compressor 11 is a compressor capable of adjusting the amount of refrigerant discharged from the discharge pipe of the compressor 11 within a unit time and changing the refrigerating capacity of the refrigerant circuit 46 by adjusting the rotation speed.
  • the heat radiating plate 44 is a heat exchanger that releases the heat of the refrigerant by exchanging heat between the outside air and the refrigerant.
  • the expansion device 45 decompresses and expands the refrigerant.
  • the expansion device 45 is, for example, a capillary tube or an electronic expansion valve. FIG. 6 schematically shows a case where the expansion device 45 is a capillary tube.
  • the cooler 12 is a heat exchanger that cools the air in the refrigerator 1 by exchanging heat between the air in the refrigerator 1 and the refrigerant.
  • the heat sink 44 functions as a condenser and the cooler 12 functions as an evaporator.
  • FIG. 7 is an external front view showing an example of the configuration of the refrigerator according to the first embodiment.
  • FIG. 8 is an external front view showing each storage room of the refrigerator shown in FIG. 7.
  • FIG. 8 shows a state in which the door of the refrigerator 1 shown in FIG. 7 is removed, and the boundary between adjacent doors is shown by a broken line.
  • the refrigerator 1 has a refrigerating room 9, an ice making room 30, a switching room 15, a vegetable room 27, and a freezing room 21 as storage rooms for storing food and the like.
  • a door 10 is provided at the opening of the refrigerating chamber 9 shown in FIG. 8 as shown in FIG.
  • the door 10 of the refrigerator compartment 9 is a double door.
  • the door 10 has a left door 10a and a right door 10b.
  • the door 10 is not limited to the case of a double door, and may be a single door.
  • a door 38 is provided at the opening of the ice making chamber 30 shown in FIG. 8 as shown in FIG.
  • a door 37 is provided at the opening of the switching chamber 15 shown in FIG. 8 as shown in FIG.
  • a door 40 is provided at the opening of the vegetable compartment 27 shown in FIG. 8 as shown in FIG. 7.
  • a door 39 is provided at the opening of the freezing chamber 21 shown in FIG. 8 as shown in FIG.
  • the refrigerating room 9 and the vegetable room 27 are kept at the refrigerating temperature.
  • the refrigeration temperature is, for example, in the temperature range of 0 to 10 ° C.
  • the ice making chamber 30 and the freezing chamber 21 are kept at a freezing temperature, which is a temperature lower than the refrigerating temperature.
  • the freezing temperature is generally in the temperature range of ⁇ 15 to ⁇ 18 ° C.
  • the switching chamber 15 is a storage chamber in which the user can select which temperature of the refrigerating temperature and the freezing temperature is to store the stored material. Note that FIG. 8 shows the partition portion between the storage chambers such as the refrigerating chamber 9 and the freezing chamber 21 and the heat insulating material covering the box body including the plurality of storage chambers by hatching.
  • FIG. 9 is a side perspective view of the refrigerator shown in FIG. 7.
  • the partition portion between the storage chambers such as the refrigerating chamber 9 and the freezing chamber 21, the doors of the refrigerating chamber and the freezing chamber, and the heat insulating material covering the box body including the plurality of storage chambers are shown by hatching.
  • FIG. 10 is a front schematic view showing a state in which the door of the refrigerating room shown in FIG. 7 is opened.
  • the refrigerator 1 is provided with an air passage 41 through which cold air, which is air cooled by the cooler 12, flows, and a blower 13 for supplying the cold air flowing through the air passage 41 to each storage chamber.
  • the air passage 41 and the blower 13 are provided on the back side of the refrigerator 1.
  • the refrigerator 1 controls a refrigerating cycle in which the refrigerant is circulated in the refrigerant circuit 46, and circulates the cold air in the vicinity of the cooler 12 in the refrigerator 13 to perform a cooling operation for cooling the air in the plurality of storage chambers.
  • the cooler 12 is equipped with a temperature sensor 35 that detects the temperature of the air cooled by the cooler 12.
  • a heater 14 for removing frost adhering to the cooler 12 is provided below the cooler 12.
  • the heater 14 When the heater 14 is energized, it warms the air around the cooler 12. As a result, the frost adhering to the cooler 12 is melted and removed. As a result, the cooler 12 recovers the cooling capacity.
  • the refrigerating chamber 9 is equipped with a temperature sensor 16 that detects the temperature of the air in the refrigerating chamber 9.
  • a damper 17 for adjusting the flow rate of the cold air flowing from the air passage 41 into the refrigerating chamber 9 is provided.
  • the refrigerating room 9 is provided with lighting 18 that illuminates the inside of the refrigerating room 9.
  • the light source of the illumination 18 is, for example, an LED (Light Emitting Diode).
  • the door 10 of the refrigerating chamber 9 is a double door, as shown in FIG. 10, the user can open and close each of the left door 10a and the right door 10b independently.
  • a door switch 19 for detecting the open / closed state of the left door 10a and the right door 10b is provided on the front surface of the refrigerating chamber 9.
  • the left door 10a of the refrigerating chamber 9 is provided with an operation panel 20 for the user to set an operating state such as a set temperature of the refrigerating temperature and the freezing temperature.
  • the operation panel 20 has an input device (not shown) for inputting the setting of the operating state of the refrigerator 1 and a display device (not shown) for displaying the operating state of the refrigerator 1. Further, the operation panel 20 may have a microcomputer (not shown) for controlling an input device (not shown) and a display device (not shown).
  • a temperature sensor 22 for detecting the temperature of the air in the freezing chamber 21 is attached to the freezing chamber 21.
  • a temperature sensor 25 for detecting the temperature of the air in the switching chamber 15 is attached to the switching chamber 15.
  • a damper 26 for adjusting the flow rate of the cold air flowing from the air passage 41 into the switching chamber 15 is provided on the back side of the switching chamber 15.
  • the vegetable compartment 27 is equipped with a temperature sensor 28 that detects the temperature of the air in the vegetable compartment 27.
  • a damper 29 for adjusting the flow rate of the cold air flowing from the air passage 41 into the vegetable compartment 27 is provided. As shown in FIG.
  • the ice making chamber 30 is equipped with a temperature sensor 31 that detects the temperature of the air in the ice making chamber 30.
  • a damper 32 for adjusting the flow rate of the cold air flowing into the ice making chamber 30 from the air passage 41 is provided.
  • the temperature sensors 16, 22, 25, 28, 31 and 35 are, for example, thermistors.
  • a main control board 23 for controlling the refrigerator 1 is provided on the upper part on the back side of the refrigerator 1.
  • a communication device 8 for communicating with the communication device 36 provided in the power management device 4 is provided.
  • FIG. 11 is a block diagram showing a main control board shown in FIG. 9 and a device connected to the main control board.
  • the control device 24 is mounted on the main control board 23.
  • the control device 24 includes a communication device 8, temperature sensors 16, 22, 25, 31 and 35, a compressor 11, a blower 13, dampers 17, 26, 29 and 32, a door switch 19, and a heater 14. , Illumination 18 and operation panel 20 are connected.
  • the control device 24 is connected to the operation panel 20 via the communication path 34.
  • the control device 24 is connected to the power management device 4 shown in FIG. 1 via the communication device 8 and the communication path 33.
  • the communication path 33 is a communication path formed by wireless communication
  • the communication path 34 is a wired communication path such as a signal cable.
  • the control device 24 is, for example, a microcomputer.
  • the control device 24 receives the setting information such as the set temperature of each storage room input by the user by operating the operation panel 20 from the operation panel 20 via the communication path 34.
  • the control device 24 receives information on the predicted transition of the surplus power Pr from the power management device 4 via the communication path 33 and the communication device 8.
  • FIG. 12 is a functional block diagram showing a configuration example of the control device shown in FIG.
  • the control device 24 includes a refrigerating cycle control means 51, a guessing means 52, a setting changing means 53, and a timer 54 for measuring the time T.
  • the time T is used to determine whether the current time is in the surplus time zone.
  • the control device 24 has a defrosting timer 93 for controlling the defrosting execution interval.
  • the control device 24 has a general-purpose timer 94.
  • the general-purpose timer 94 is a general term for all timers used for determining the execution timing of various operations of the refrigerator, except for the timer 54 and the defrosting timer 93.
  • the refrigerating cycle control means 51 maintains the refrigerating cycle of the refrigerant circuit 46 so that the detected value of the temperature sensor 22 for the refrigerating temperature is maintained at the set temperature Temp_CONT and the detected value of the temperature sensor 16 for the refrigerating temperature is maintained at the set temperature Tsc. To drive. For example, regarding the refrigerating temperature, the refrigerating cycle control means 51 controls the rotation speed of the compressor 11 and the rotation speed of the blower 13 so that the temperature detected by the temperature sensor 22 is maintained at the set temperature Temp_CONT.
  • the set temperature Temp_CONT when the refrigerator 1 is normally operated is set as the reference temperature Tkf.
  • the temperature set by the user by operating the operation panel 20 is an example of the reference temperature Tkf.
  • the reference temperature Tkf in the case of the freezing temperature has been described, but regarding the refrigerating temperature, the set temperature Tsc when the refrigerator 1 is normally operated is set as the reference temperature Tkc.
  • the freezing temperature will be described as a temperature determination target in the control of the refrigerator 1, but the determination target may be the refrigeration temperature.
  • the refrigerating cycle control means 51 sets the rotation speed of the compressor 11 and the rotation speed of the blower 13 corresponding to the changed set temperature Temp_CONT. Change the temperature Temp_CONT to a value different from the case of the reference temperature Tkf. For example, when the set temperature Tim_CONT is changed to a temperature lower than the reference temperature Tkf, the refrigeration cycle control means 51 controls the refrigeration cycle so that the temperature of the air in the freezing chamber 21 becomes lower than the reference temperature Tkf. Perform cold storage operation.
  • the refrigerating cycle control means 51 energizes the heater 14 when performing a defrosting operation for removing frost adhering to the cooler 12.
  • the refrigerating cycle control means 51 stops energizing the heater 14.
  • the refrigerating cycle control means 51 may notify the setting changing means 53 of the measurement time of the general-purpose timer 94.
  • the estimation means 52 estimates the surplus power time zone Tr, which is the time zone in which the surplus power Pr is obtained.
  • the setting changing means 53 changes the set temperature Temp_CONT to a temperature lower than the reference temperature in the surplus power time zone Tr estimated by the guessing means 52. Further, the setting changing means 53 changes the set temperature Temp_CONT to a temperature higher than the reference temperature Tkf after the surplus power time zone Tr.
  • the control device 24 is composed of a processor 61 such as a CPU and a memory 62, as shown in FIG.
  • the functions of the refrigerating cycle control means 51, the guessing means 52, the setting changing means 53, and the timer 54 are realized by the arithmetic unit such as the processor 61 executing the control program stored in the memory 62.
  • the control program describes various determination processes such as temperature determination required for controlling the refrigerator 1 and processes for measuring time.
  • the memory 62 has a non-volatile memory (not shown) for storing a control program and a volatile memory (not shown) for temporarily storing the result of arithmetic processing by the control device 24.
  • the non-volatile memory is, for example, a non-volatile semiconductor memory such as a ROM (Read Only Memory), a flash memory, an EPROM (Erasable and Programmable ROM), and an EEPROM (Electrically Erasable and Projectable ROM).
  • the volatile memory is, for example, a volatile semiconductor memory of a RAM (Random Access Memory).
  • a detachable recording medium such as a magnetic disk, a flexible disk, an optical disk, a CD (Compact Disc), an MD (Mini Disc), and a DVD (Digital Versaille Disc) may be used.
  • the communication path 33 may be a wired communication path.
  • the communication path 34 may be a communication path formed by wireless communication.
  • the refrigerator 1 of the first embodiment has been described in the case of having a plurality of storage chambers, the refrigerator 1 may have one storage chamber. If the refrigerator is provided with only one storage chamber, the blower 13 may not be provided.
  • FIGS. 13 and 14 are flowcharts showing an example of the operation procedure of the refrigerator according to the first embodiment.
  • the case where the temperature to be determined is the freezing temperature will be described.
  • the control device 24 performs a loop process in which the processes of steps S101 to S117 shown in FIGS. 13 and 14 are repeated at regular intervals.
  • One cycle is, for example, a time of several ms to several tens of ms.
  • the series of processes shown in FIGS. 13 and 14 show the main processes related to the control method of the first embodiment, and may include processes not shown in the figure.
  • the refrigerating cycle control means 51 measures the operating time Tcon of the compressor 11 or the refrigerator 1 with the timer 54 after the power is turned on to the refrigerator 1.
  • the guessing means 52 determines whether or not to receive information on the predicted transition of the surplus power Pr from the power management device 4 (step S101). Upon receiving the information on the predicted transition of the surplus power Pr, the guessing means 52 activates the timer 54 and proceeds to step S102. As a result of the determination in step S101, if the information on the predicted transition of the surplus power Pr is not newly received, the guessing means 52 proceeds to the process of step S103.
  • step S102 when the estimation means 52 receives the information on the predicted transition of the surplus power Pr from the management server 42, the guessing means 52 estimates the surplus power time zone Tr from the predicted transition of the surplus power Pr. After step S102, the guessing means 52 proceeds to the process of step S103.
  • the surplus power time zone Tr is a reference in which the value of the surplus power Pr is a predetermined threshold value P1 or more and the time of the surplus power Pr of the threshold value P1 or more is predetermined.
  • the surplus power time zone Tr may occur not only once but also a plurality of times within the management time TM1.
  • the estimation means 52 estimates all the surplus power time zone Trs in the management time TM1, and stores the start time Tst and the end time Ted of each surplus power time zone Tr.
  • FIG. 15 is a diagram showing an example of information received from the management server by the guessing means in step S102 shown in FIG.
  • FIG. 15 is a table showing an example of information on the predicted transition of the surplus power Pr.
  • FIG. 16 is a graph showing an example of prediction of the surplus power time zone corresponding to the table shown in FIG. The vertical axis of FIG. 16 shows the surplus power Pr, and the horizontal axis shows the time.
  • FIG. 16 shows a case where the threshold value P1 is 1 kW and the reference time TC is 3 hours.
  • the management time TM1 is 24 hours.
  • the values of the threshold value P1, the reference time TC, and the management time TM1 are not limited to the values used in the description here.
  • the guessing means 52 estimates that there are two surplus power time zones Tr of the surplus power time zone Tr1 and Tr2 within the management time TM1.
  • the start time Tst is 4 o'clock and the end time Ted is 6 o'clock.
  • the start time Tst is 18:00 and the end time Ted is 20:00.
  • there is a surplus power Pr of 10 kW between 12:00 and 14:00 but since the duration is less than the reference time TC, it does not correspond to the surplus power time zone Tr.
  • the time when the surplus power Pr is equal to or higher than the threshold value P1 and the surplus power Pr is equal to or higher than the threshold value P1 is set as the surplus power time zone Tr, so that the refrigerator 1 can be used for a long time.
  • the surplus power Pr can be used for the operation requiring power.
  • the reference time TC is set to 2 hours, the surplus power Pr of 10 kW from 12:00 to 14:00 can be effectively utilized.
  • the surplus electric power Pr from 12:00 to 14:00 can be used, for example, for the cold storage operation.
  • step S103 the setting changing means 53 temporarily sets the set temperature Temp_CONT of the freezing temperature to the reference temperature Tsf for normal operation. However, in step S103, it is a temporary setting stage, and the set temperature Temp_CONT used for control by the refrigeration cycle control means 51 is set later.
  • the control device 24 is connected to a microcomputer (not shown) provided on the operation panel 20 via a communication path 34. The microcomputers of the control device 24 and the operation panel 20 communicate with each other at a predetermined cycle. The user operates the operation panel 20 to select the set temperature Temp_CONT of the freezing chamber 21 from a plurality of stages.
  • the microcomputer of the operation panel 20 transmits information on the user-set temperature Temp_U corresponding to the stage selected by the user to the control device 24.
  • the user-set temperature Temp_U corresponds to the reference temperature Tkf of the freezing chamber 21 during normal operation.
  • the setting changing means 53 sets the set temperature Temp_CONT to the user set temperature Temp_U.
  • the setting changing means 53 determines whether or not the current time Now belongs to the surplus power time zone Tr estimated in step S102 (step S104). Specifically, the setting changing means 53 determines whether or not the measured value of the timer 54 belongs between the start time Tst and the end time Ted of each surplus power time zone Tr stored in the guessing means 52 in step S102. investigate. In this way, the setting changing means 53 determines whether or not the current time Now belongs to the surplus power time zone Tr.
  • step S104 when the current time Tnow belongs to the surplus power time zone Tr, the setting changing means 53 uses the predetermined temperature adjustment amount Vtd for the cold storage operation, and the set temperature Temp_CONT for the cold storage operation. Is corrected (step S105). Specifically, the setting changing means 53 calculates a value obtained by subtracting the temperature adjustment amount Vtd from the set temperature Temp_CONT set in step S103. The setting changing means 53 sets the calculated value as a new set temperature Temp_CONT.
  • step S104 when the current time Tnow does not belong to the surplus power time zone Tr, the setting changer 53 steps belong to the time zone after the current time Tnow has performed the previous cold storage operation. Whether or not it is determined (step S106).
  • step S106 when the current time Tow belongs to the time zone after the previous cold storage operation was performed, the setting changing means 53 uses the predetermined temperature adjustment amount Vtu for the cold storage operation.
  • the set temperature is corrected for after the cold storage operation is performed (step S107). Specifically, the setting changing means 53 calculates a value obtained by adding the temperature adjustment amount Vtu to the set temperature Temp_CONT set in step S103.
  • the setting changing means 53 sets the calculated value as a new set temperature Temp_CONT.
  • the temperature adjustment amount Vtu is applied to the set temperature Tim_CONT for a long time in step S107, the temperature of the stored matter in the freezing chamber 21 rises, as will be described later. Therefore, when the setting change means 53 reaches the predetermined time limit TLim from the setting change by the general-purpose timer 94 from the setting change in step S107, the application of the temperature adjustment amount Vtu to the set temperature Tim_CONT ends.
  • the time limit TLim corresponds to the time zone after the previous cold storage operation was performed.
  • step S106 if the current time Now does not belong to the time zone after the previous cold storage operation was performed, the setting changing means 53 does not change the set temperature Tim_CONT. That is, at this stage, the setting changing means 53 determines the set temperature Temp_CONT temporarily set in step S103 as the set temperature used by the refrigerating cycle control means 51 for control. In the case of No in steps S105 and S106 or after S107, the freezing cycle control means 51 updates the freezing temperature used for determining the control of the freezing cycle to the temperature Temp_F detected by the temperature sensor 22 (step S108).
  • the refrigeration cycle control means 51 determines the operating state of the compressor 11 (step S109). Specifically, the refrigeration cycle control means 51 calculates the temperature difference Tdif between the set temperature Temp_CONT set in steps S103, S105 or S107 and the temperature Temp_F updated in step S108. Then, the refrigerating cycle control means 51 determines the on and off operating states of the compressor 11 according to the calculated magnitude of the temperature difference Tdif. In step S109, the refrigerating cycle control means 51 may determine the on and off operating states of the blower 13 according to the calculated magnitude of the temperature difference Tdif.
  • step S109 when the refrigerating cycle control means 51 determines that the operating state of the compressor 11 is turned on, when the set temperature Temp_CONT is changed by step S105 or S107, the rotation speed is different from that when it is not changed. It may be set to the compressor 11. Further, when the refrigerating cycle control means 51 determines that the operating state of the blower 13 is turned on, when the set temperature Temp_CONT is changed by step S105 or S107, the rotation speed different from that when the set temperature Temp_CONT is not changed is set to the blower 13. It may be set.
  • step S109 the refrigerating cycle control means 51 changes one or both of the rotation speed of the compressor 11 and the rotation speed of the blower 13 to a value higher than the rotation speed when the set temperature Temp_CONT is the reference temperature Tkf. do.
  • the refrigerator 1 will perform a cold storage operation. By setting the rotation speed of the blower 13 to a high value, cold energy can be stored in a wider range in the refrigerator 1.
  • step S109 the refrigerating cycle control means 51 changes one or both of the rotation speed of the compressor 11 and the rotation speed of the blower 13 to a value lower than the rotation speed when the set temperature Temp_CONT is the reference temperature Tkf. do.
  • one or both of the rotation speed of the compressor 11 and the rotation speed of the blower 13 is lower than in the normal operation, so that the power consumption of the refrigerator 1 can be suppressed.
  • it is desirable that the time for setting the set temperature Temp_CONT to a temperature higher than the reference temperature Tkf is within the time limit TLim so that the temperature of the stored matter in the refrigerator 1 does not become too high.
  • FIG. 17 is a time chart showing an example of the transition of the set temperature corresponding to the processing of steps S103, S105 and S107 shown in FIG. 13 and the change of the operating state of the compressor due to the transition of the set temperature.
  • the horizontal axis shown in FIG. 17 indicates time.
  • the set temperature Temp_CONT shown in FIG. 17 is the set temperature Temp_CONT at the stage used by the refrigerating cycle control means 51 when determining the operating state of the compressor 11 in step S109.
  • the operating state of the compressor 11 in FIG. 17 indicates whether it is an on state or an off state in each time zone.
  • the setting changing means 53 makes a correction by subtracting the temperature adjustment amount Vtd from the set temperature Temp_CONT.
  • the refrigeration cycle control means 51 operates the compressor 11 by changing the operation frequency from the medium level to the high level in the surplus power time zone Tr3.
  • the operation frequency of the compressor 11 indicates the ratio of the on-state time per unit time.
  • Medium level driving frequency is the percentage of on-state time per unit time during normal driving.
  • a high level of operation frequency means that the percentage of on-time hours per unit time is higher than during normal operation.
  • the refrigerating cycle control means 51 determines the operation frequency of the compressor 11 during the time limit TLim. Operate at a low level. A low level of operation frequency means that the ratio of on-time per unit time is lower than during normal operation.
  • the refrigeration cycle control means 51 returns the operating frequency of the compressor 11 from a low level to a medium level after the time limit TLim.
  • the setting changing means 53 makes a correction by subtracting the temperature adjustment amount Vtd from the set temperature Temp_CONT.
  • the refrigeration cycle control means 51 operates the compressor 11 by changing the operation frequency from the medium level to the high level in the surplus power time zone Tr4.
  • step S105 Even if the set temperature Temp_CONT is set to the reference temperature Tkf during normal operation in step S103 of FIG. 13, it may be corrected in step S105 or step S107. Therefore, it should be noted that even if the set temperature Temp_CONT is set to the reference temperature Tkf in step S103 of FIG. 13, the set temperature does not appear in the graph shown in FIG. That is, the graph of FIG. 17 shows the set temperature Temp_CONT set in the case of No in steps S105 and S106 of FIG. 13 or by the process of step S107.
  • step S110 the refrigeration cycle control means 51 determines whether or not the operation time Tcon has reached the predetermined control time Tdef_INT.
  • the management time Tdef_INT is a cycle suitable for defrosting the cooler 12.
  • step S110 if the operation time Tcon has not reached the control time Tdef_INT, the refrigeration cycle control means 51 determines that the defrosting operation is unnecessary, and returns to step S101.
  • step S110 when the operation time Tcon has reached the management time Tdef_INT, the refrigeration cycle control means 51 determines that the defrosting operation is necessary.
  • the refrigeration cycle control means 51 resets the operation time Tcon measured by the defrost timer 93, and causes the defrost timer 93 to restart the measurement of the operation time Tcon. Then, the refrigeration cycle control means 51 shifts to the process of step S111.
  • Steps S111 to S114 are processes for determining whether or not the refrigerating cycle control means 51 performs a forced cooling operation for forcibly cooling the inside of the refrigerator 1 before the defrosting operation.
  • the heater 14 is energized, so that the temperature inside the refrigerator 1 rises and the temperature of the stored items also rises. Therefore, before the defrosting operation, it is desirable to lower the temperature in the refrigerator 1 as compared with the normal operation.
  • the forced cooling operation is a temperature compensation operation in which the inside of the refrigerator 1 is cooled to a temperature lower than the set temperature during the normal operation before the defrosting operation, and the temperature rise in the refrigerator 1 is suppressed during the defrosting operation.
  • the refrigerating cycle control means 51 has a predetermined forced execution time in a state where the set temperature Temp_CONT of the freezing chamber 21 is set to a value smaller by a predetermined correction amount Vtd_PCL during the forced cooling operation. Ttd_PCL, the refrigerant is circulated in the refrigerant circuit 46.
  • the correction amount Vtd_PCL and the temperature adjustment amount Vtd described in step S105 may have the same value or different values.
  • step S111 the setting changing means 53 determines whether or not the current time Now belongs to the surplus power time zone Tr. As a result of the determination in step S111, when the current time Tnow belongs to the surplus power time zone Tr, the setting changing means 53 proceeds to the process of step S116.
  • step S116 the setting changing means 53 does not perform a process of reducing the set temperature Temp_CONT by the correction amount Vtd_PCL. Instead, the refrigeration cycle control means 51 measures the elapsed time from the transition to step S116 with the general-purpose timer 94, and when the elapsed time reaches the forced execution time Ttd_PCL, the transition to step S117. This is because, in step S116, the setting changing means 53 has determined that it is unnecessary to change the set temperature Temp_CONT by substituting the forced cooling operation for the cold storage operation.
  • step S111 when the current time Tnow does not belong to the surplus power time zone Tr, the setting changing means 53 determines in advance the time from the current time Tnow to the next surplus power time zone Tr. It is determined whether or not the waiting time is Tbe or less (step S112). As a result of the determination in step S112, when the time until the next surplus power time zone Tr is equal to or less than the standby time Tbef, the setting changing means 53 waits until the current time Now becomes the next surplus power time zone Tr (step). S113). When the current time Now becomes the next surplus power time zone Tr, the setting changing means 53 proceeds to the process of step S116.
  • step S112 when the time from the current time Tnow to the next surplus power time zone Tr is larger than the standby time Tbef, the setting changing means 53 changes from the previous surplus power time zone Tr to the current time Tnow. It is determined whether or not the time is equal to or less than the predetermined time Taft (step S114). As a result of the determination in step S114, if the elapsed time from the previous surplus power time zone Tr to the current time Tnow is not less than or equal to the time Taft, the setting changing means 53 proceeds to the process of step S115.
  • step S115 the setting changing means 53 changes the set temperature Temp_CONT to a value smaller by the correction amount Vtd_PCL, and maintains the set temperature Temp_CONT at the changed value during the forced implementation time Ttd_PCL.
  • the refrigerating cycle control means 51 performs a forced cooling operation during the forced execution time Ttd_PCL.
  • the refrigeration cycle control means 51 stops the forced cooling operation and proceeds to step S117.
  • step S114 when the elapsed time from the previous surplus power time zone Tr to the current time Tnow is less than or equal to the time Taft, the refrigerating cycle control means 51 energizes the heater 14 (step S117). , Perform defrosting operation. If the elapsed time from the previous surplus power time zone Tr to the current time Tnow is less than or equal to the time Taft, it is considered that there is time until the cold storage operation of the next surplus power time zone Tr is performed. conduct. In step S117, the refrigeration cycle control means 51 continues to energize the heater 14 until the temperature detected by the temperature sensor 35 reaches a predetermined upper limit temperature.
  • the refrigerating cycle control means 51 determines that the defrosting has been completed, and stops the energization of the heater 14. After that, the refrigeration cycle control means 51 shifts to the process of step S101.
  • the surplus electric power Pr can be utilized for the cold storage operation of the refrigerator 1 even for a short time. Further, when the surplus power time zone Tr overlaps with the time of the forced cooling operation before defrosting, the forced cooling operation can be substituted for the cold storage operation.
  • control device 24 does not have to execute the process of step S103 every time the entire process shown in the flow of FIGS. 13 and 14 is performed.
  • the control device 24 measures the elapsed time from the time when the process of step S103 is executed by the general-purpose timer 94.
  • the control device 24 executes the process of step S103, but the elapsed time reaches the management time TM2. If not, step S103 may be skipped.
  • control device 24 does not have to execute the process of step S104 every time the entire process shown in the flow of FIGS. 13 and 14 is performed.
  • the control device 24 measures the elapsed time from the time when the process of step S104 is executed by the general-purpose timer 94.
  • the control device 24 executes the process of step S104, but the elapsed time reaches the management time TM3. If not, step S104 may be skipped.
  • control device 24 does not have to execute the process of step S109 every time the entire process shown in the flow of FIGS. 13 and 14 is performed.
  • the control device 24 measures the elapsed time from the time when the process of step S109 is executed by the general-purpose timer 94.
  • the control device 24 executes the process of step S109, but the elapsed time reaches the management time TM4. If not, step S109 may be skipped.
  • control device 24 does not have to execute the process of step S110 every time the entire process shown in the flow of FIGS. 13 and 14 is performed.
  • the control device 24 measures the elapsed time from the time when the process of step S110 is executed by the general-purpose timer 94.
  • the control device 24 executes the process of step S110, but the elapsed time reaches the management time TM5. If not, step S110 may be skipped.
  • the refrigerator 1 of the first embodiment cools the air in the storage chamber by circulating the communication device 8, the storage chamber for storing the storage, the temperature sensor for detecting the temperature of the air in the storage chamber, and the refrigerant. It has a refrigerant circuit 46 and a control device 24 that controls a refrigeration cycle of the refrigerant circulating in the refrigerant circuit 46.
  • the communication device 8 communicates with the management server 42 that predicts the future transition of the surplus power Pr from the history information of the power generated by the power generation device 3 and the total power consumption Pt of the electric device including the refrigerator 1.
  • the control device 24 includes a refrigerating cycle control means 51, a guessing means 52, and a setting changing means 53.
  • the refrigeration cycle control means 51 controls the refrigeration cycle so that the temperature detected by the temperature sensor is maintained at the set temperature Temp_CONT.
  • the estimation means 52 receives the forecast transition information indicating the prediction of the future transition of the surplus power Pr from the management server 42, the estimation means 52 estimates the surplus power time zone Tr, which is the time zone in which the surplus power Pr is obtained.
  • the setting changing means 53 changes the set temperature Temp_CONT to a temperature lower than the determined reference temperature Tkf in the surplus power time zone Tr estimated by the guessing means 52.
  • the refrigerator 1 of the first embodiment performs a cold storage operation in the refrigerator 1 in which the set temperature Temp_CONT is set to a temperature lower than the reference temperature Tkf in the surplus power time zone Tr estimated by the estimation means 52.
  • Cold heat is stored in the storage, and surplus electricity can be stored in the storage as heat energy.
  • the temperature of the stored material becomes lower than the reference temperature during the normal operation. For example, if the temperature of the freezing chamber 21 is maintained in the temperature range of -15 ° C to -18 ° C, the quality of the stored product is not affected, and even if the temperature of the stored product drops below -18 ° C. The effect of is small.
  • the refrigerator 1 can be operated for cold storage even if the time zone with surplus power is short, the chances of using the surplus power from the power generation device 3 using natural energy are increased, and the surplus power can be further utilized. Even if the cold storage operation time is shortened due to the short duration of surplus power, the heat energy stored in the storage is only reduced, and the storage is not affected.
  • Patent Document 1 describes a method of using commercial power in addition to a method of accelerating the start time of the next defrosting operation without performing the defrosting operation when the surplus power is less than the power required for the defrosting operation. Is described. In this case, it is not possible to sufficiently reduce the amount of commercial power used. Further, in the power supply system disclosed in Patent Document 1, if the surplus electric power is less than the electric power required for the defrosting operation, it is conceivable to stop the defrosting operation in the middle. In this case, as described above, if the frost of the cooler is not removed and remains, there is a possibility that the refrigerator cannot fully exert the cooling function thereafter.
  • the refrigerator 1 of the first embodiment does not use the surplus power Pr for the defrosting operation with a large power consumption, but uses the surplus power Pr for the cold storage operation even for a short time. Therefore, the surplus electric power Pr from the power generation device 3 can be utilized for storing cold heat in the storage in the refrigerator 1 without disturbing the normal cooling function.
  • the setting changing means 53 may change the set temperature to a temperature higher than the reference temperature after the surplus power time zone Tr, and maintain the set temperature at the changed value for a time limit of TLim.
  • the set temperature Temp_CONT of the freezing chamber 21 becomes higher than the reference temperature Tkf during the normal operation in the time zone when there is no surplus electric power.
  • the heat energy stored in the cold storage operation keeps the temperature of the stored product at a level that does not impair the quality of the stored product for a certain period of time. Can be kept in. As a result, the power consumption of the refrigerator 1 in the time zone when there is no surplus power is suppressed, and the amount of commercial power Pc used can be suppressed.
  • the forced cooling operation is an operation in which the inside of the refrigerator 1 is forcibly cooled before the defrosting operation in order to compensate for an increase in the temperature inside the refrigerator 1 when the cooler 12 is defrosted. If the execution timing of this forced cooling operation is close to the surplus power time zone Tr in which the cold storage operation is executed, the cold storage operation can be substituted. As a result, the surplus electric power Pr can cover the electric power used for the forced cooling operation before the defrosting operation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

Le réfrigérateur de la présente invention est alimenté en énergie à partir d'un système d'alimentation électrique qui comprend un dispositif de production d'énergie utilisant de l'énergie naturelle. Le réfrigérateur comprend : un dispositif de communication qui communique avec un serveur qui prédit une tendance future pour une énergie excédentaire à partir d'informations d'historique concernant l'énergie produite par le dispositif de production d'énergie et la consommation d'énergie totale d'un équipement électronique comprenant le réfrigérateur ; une chambre de stockage servant à stocker un article stocké ; un capteur de température pour détecter la température de l'air dans la chambre de stockage ; un circuit de fluide frigorigène qui refroidit l'air dans la chambre de stockage ; et un dispositif de commande qui commande un cycle frigorifique d'un fluide frigorigène circulant à travers le circuit de fluide frigorigène. Ledit dispositif de commande comprend un moyen de commande de cycle frigorifique destiné à commander le cycle frigorifique de telle sorte qu'une valeur détectée à partir du capteur de température soit maintenue à une température définie, un moyen d'estimation pour estimer une zone horaire d'énergie excédentaire, au cours de laquelle une énergie excédentaire peut être obtenue, lorsque des informations concernant la future tendance prédite pour une énergie excédentaire sont reçues en provenance du serveur, et un moyen de changement de régulation pour changer la température régulée à une température inférieure à une température de référence prédéterminée dans la zone horaire d'énergie excédentaire.
PCT/JP2020/027277 2020-07-13 2020-07-13 Réfrigérateur Ceased WO2022013926A1 (fr)

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Cited By (1)

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WO2024070256A1 (fr) * 2022-09-30 2024-04-04 パナソニックＩｐマネジメント株式会社 Dispositif de refroidissement, procédé de fonctionnement pour dispositif de refroidissement, et système de commande pour dispositif de refroidissement

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JPS63197865A (ja) * 1987-02-12 1988-08-16 株式会社東芝 蓄冷式冷蔵庫
JPH068711B2 (ja) * 1987-09-10 1994-02-02 株式会社東芝 冷蔵庫
JPH11248333A (ja) * 1998-02-27 1999-09-14 Fujitsu General Ltd 電気冷蔵庫の制御方法およびその装置
JP2000088421A (ja) * 1998-09-18 2000-03-31 Hitachi Ltd 冷蔵庫
US20120023987A1 (en) * 2010-11-03 2012-02-02 Besore John K Refrigeration demand response recovery
JP2013070593A (ja) * 2011-07-14 2013-04-18 Sharp Corp 太陽光発電装置の給電システム、ならびに、それに用いられる情報処理端末装置、洗濯乾燥機および冷蔵庫

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Publication number Priority date Publication date Assignee Title
JPS63197865A (ja) * 1987-02-12 1988-08-16 株式会社東芝 蓄冷式冷蔵庫
JPH068711B2 (ja) * 1987-09-10 1994-02-02 株式会社東芝 冷蔵庫
JPH11248333A (ja) * 1998-02-27 1999-09-14 Fujitsu General Ltd 電気冷蔵庫の制御方法およびその装置
JP2000088421A (ja) * 1998-09-18 2000-03-31 Hitachi Ltd 冷蔵庫
US20120023987A1 (en) * 2010-11-03 2012-02-02 Besore John K Refrigeration demand response recovery
JP2013070593A (ja) * 2011-07-14 2013-04-18 Sharp Corp 太陽光発電装置の給電システム、ならびに、それに用いられる情報処理端末装置、洗濯乾燥機および冷蔵庫

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Publication number Priority date Publication date Assignee Title
WO2024070256A1 (fr) * 2022-09-30 2024-04-04 パナソニックＩｐマネジメント株式会社 Dispositif de refroidissement, procédé de fonctionnement pour dispositif de refroidissement, et système de commande pour dispositif de refroidissement
JP2024051960A (ja) * 2022-09-30 2024-04-11 パナソニックＩｐマネジメント株式会社 冷却装置、冷却装置の運転方法および冷却装置の制御システム
JP7660304B2 (ja) 2022-09-30 2025-04-11 パナソニックＩｐマネジメント株式会社 冷却装置、冷却装置の運転方法および冷却装置の制御システム

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