EP3818316A1 - Réfrigérateur et son procédé de commande - Google Patents

Réfrigérateur et son procédé de commande

Info

Publication number
EP3818316A1
EP3818316A1 EP19855235.8A EP19855235A EP3818316A1 EP 3818316 A1 EP3818316 A1 EP 3818316A1 EP 19855235 A EP19855235 A EP 19855235A EP 3818316 A1 EP3818316 A1 EP 3818316A1
Authority
EP
European Patent Office
Prior art keywords
temperature
state
refrigerator
compartment
compressor
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.)
Pending
Application number
EP19855235.8A
Other languages
German (de)
English (en)
Other versions
EP3818316A4 (fr
Inventor
Tatsuya Shimizu
Yasushi Soda
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority claimed from PCT/KR2019/010942 external-priority patent/WO2020045958A1/fr
Publication of EP3818316A1 publication Critical patent/EP3818316A1/fr
Publication of EP3818316A4 publication Critical patent/EP3818316A4/fr
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/39Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022Compressor control arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2341/00Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06Details of flow restrictors or expansion valves
    • F25B2341/062Capillary expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/025Compressor control by controlling speed
    • F25B2600/0253Compressor control by controlling speed with variable speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/11Fan speed control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2507Flow-diverting valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2104Temperatures of an indoor room or compartment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00Problems to be solved
    • F25D2500/04Calculation of parameters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00Control issues
    • F25D2600/02Timing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/14Sensors measuring the temperature outside the refrigerator or freezer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the disclosure relates to a refrigerator capable of performing control suitable to a state thereof and a control method thereof.
  • refrigerator-freezer including a body having a storage compartment therein, a vacuum insulator arranged in a heat insulating wall of the body, a compressor forming a part of the refrigeration cycle and capable of varying a rotational speed, and a control device controlling the compressor
  • a technique relate to the control device maintaining an upper limit value of the rotational speed of the compressor at a first speed for a time length TL after a power is supplied to the refrigerator-freezer, and the control device increasing the upper limit value of the rotational speed of the compressor to a second speed greater than the first speed after the time length TL, is already known in the art.
  • the present invention provides a refrigerator and a control method thereof for driving the components constituting the refrigeration cycle according to the state at that time before the state where the refrigeration cycle cools the specific storage compartment and the state without cooling.
  • a refrigerator includes a compressor configured to circulate a refrigerant, a condenser configured to condense the refrigerant circulated by the compressor, a cooling component configured to cool a storage compartment by the refrigerant condensed by the condenser; and at least one processor configured to control driving of the cooling component and the at least one processor obtains a load variation of the storage compartment of the refrigerator including a refrigeration cycle, identifies a drive value for driving a component forming the refrigeration cycle based on the load variation, drives the cooling component based on the drive value, and obtains the load variation with the lapse of time during at least one cooling period in which the refrigeration cycle cools the storage compartment.
  • the at least one processor may obtain the load variation by using a specific value of a first state varying with time and including an internal temperature of the storage compartment.
  • the at least one processor may identify a specific value of a second state corresponding to a state of the component, as the drive value.
  • the at least one processor may identify the drive value based the specific value of the second state and drive the component by using the drive value.
  • the first state may include at least one of an internal temperature and an external temperature of the refrigerator and the second state may include setting of the component.
  • the setting may include setting of a degree of cooling of the cooling component.
  • the setting of a degree of cooling may include the number of revolutions of the compressor.
  • the cooling component may further include an expansion valve, and the setting of a degree of cooling may include an opening degree of the expansion valve.
  • the cooling component may further include a fan and the setting of a degree of cooling may include the number of revolutions of the fan.
  • the at least one processor may identify the specific value of the second state satisfying a constraint condition.
  • the at least one processor may identify a change in the first state value corresponding to a plurality of the second state values, based on the specific value of the first state, and the at least one processor may identify at least two values of the second state satisfying the constraint condition based on the change in the first state value and the plurality of the second state values, and identify the specific value of the second state based on the at least two values of the second state.
  • the at least one processor may identify the change in the first state value corresponding to a plurality of the second state values, as an estimation model, the at least one processor may identify a state of the estimation model based on the specific value of the first state and the change in the first state value based on a past value of the first state, and the at least one processor may estimate a change in the first state value based on the specific value of the first state based on the state of the estimation model.
  • the at least one processor may estimate each indicator for at least two values of the second state based on the specific value of the first state, and identify the specific value of the second state from the at least two values of the second state based on the indicator.
  • the indicator may include power consumption of the refrigerator, and the specific value of the second state may be a set value of the component making the power consumption minimized.
  • the at least one processor may use allowing one of a temperature of the first storage compartment and a temperature of the second compartment to be decreased to reach a predetermined temperature until the other of the temperature of the first storage compartment and the temperature of the second compartment is increased to reach a predetermined temperature, as the constraint condition.
  • the at least one processor may use allowing one of a temperature of the first storage compartment and a temperature of the second compartment to be increased to reach a predetermined temperature until the other of the temperature of the first storage compartment and the temperature of the second compartment is increased to reach a predetermined temperature, as the constraint condition.
  • the at least one processor may estimate whether or not the constraint condition is satisfied at an end point thereof based on the specific value of the first state, a plurality of times, and the at least one processor may identify the specific value of the second state.
  • the at least one processor may estimate a change in the first state value for each the plurality of the second state values based on the specific value of the first state, estimate whether or not the constraint condition is satisfied at an end point thereof a plurality of times, identify at least two values of the second state to allow the constraint condition to be satisfied at the end point based on the change in the first state value and the plurality of the second state values, and identify the specific value of the second state based on the at least two values of the second state.
  • the at least one processor may form an estimation model configured to generate a stop condition or the drive value of the component based on the past load variation and based on training of time series data in which the past drive values, which is identified based on the past load variation, are accumulated in a time series, and the at least one processor may change the stop condition or the drive value according to the load variation based on the estimation model.
  • a control method of a refrigerator includes acquiring a load variation of a storage compartment of the refrigerator, determining a drive value, which is to drive a component implementing a refrigeration cycle, based on the load variation, driving the component based on the drive value, and acquiring the load variation with the lapse of time during at least one period in which the refrigeration cycle cools the storage compartment.
  • the refrigerator and the control method according to an embodiment may drive the components constituting the refrigeration cycle according to the state at that time before the refrigeration cycle is switched between the state of cooling the specific storage compartment and the state of no cooling.
  • FIG. 1 is a block diagram illustrating an example of a functional configuration of a control device according to an embodiment of the disclosure
  • FIG. 2 is a graph illustrating a change in the temperature for each revolutions per minute (RPM) of a compressor input to a controller from a temperature estimator of the control device according to an embodiment of the disclosure;
  • RPM revolutions per minute
  • FIG. 3 is a table illustrating power consumption for each RPM of the compressor input to the controller from a power estimator of the control device according to an embodiment of the disclosure
  • FIG. 4 is a graph illustrating a change in the RPM of the compressor output by the controller of the control device according to an embodiment of the disclosure
  • FIG. 5A is a graph illustrating a change in the temperature and the RPM of a compressor in a conventional refrigerator
  • FIG. 5B is a graph illustrating a change in the temperature and the RPM of a compressor in a refrigerator to which an embodiment of the disclosure is applied;
  • FIG. 6 is a flow chart illustrating an operation example of the controller of the control device according to an embodiment of the disclosure.
  • FIG. 7 is a view illustrating an example of an overall configuration of a refrigerator according to a first application example of an embodiment of the disclosure
  • FIG. 8 is a view illustrating an example of a refrigeration cycle in the first application example of an embodiment of the disclosure.
  • FIG. 9 is a graph illustrating a temperature change in a state in which a refrigerating compartment and a freezing compartment are alternately cooled by using the refrigeration cycle in the first application example of an embodiment of the disclosure.
  • FIG. 10 is a graph illustrating a temperature change in a state in which the refrigerating compartment and the freezing compartment are simultaneously cooled by using the refrigeration cycle in the first application example of an embodiment of the disclosure
  • FIG. 11 is a view illustrating an example of an overall configuration of a refrigerator according to a second application example of an embodiment of the disclosure.
  • FIG. 12 is a view illustrating an example of a configuration of a first refrigeration cycle in the second application example of an embodiment of the disclosure
  • FIG. 13 is a graph illustrating a temperature change in a state in which the refrigerating compartment and the freezing compartment are cooled by using the first refrigeration cycle in the second application example of an embodiment of the disclosure
  • FIG. 14 is a view illustrating an example of a configuration of a second refrigeration cycle in the second application example of an embodiment of the disclosure
  • FIG. 15 is a graph illustrating a temperature change in a state in which the refrigerating compartment and the freezing compartment are cooled by using the second refrigeration cycle in the second application example of an embodiment of the disclosure
  • FIG. 16 is a view illustrating an example of an overall configuration of a refrigerator according to a third application example of an embodiment of the disclosure.
  • FIG. 17 is a view illustrating an example of a configuration of a refrigeration cycle in the third application example of an embodiment of the disclosure.
  • FIG. 18 is a graph illustrating a temperature change in a state in which a refrigerating compartment, and a freezing/variable temperature compartment are cooled by using the refrigeration cycle in the third application example of an embodiment of the disclosure;
  • FIG. 19 is a view illustrating the temperature change in the refrigerating compartment and the freezing compartment in the second application example, particularly, illustrating how to estimate the temperature change by using any model at any section;
  • FIG. 20 is a graph particularly illustrating the estimation of the temperature change of the refrigerating compartment
  • FIG. 21 is a view illustrating an example of a quadratic curved surface of a function for determining parameters of a transfer function
  • FIGS. 22A-22C are graphs illustrating a change in the temperature of the refrigerating compartment, a change in the temperature of the freezing compartment and a change in the RPM of the compressor;
  • FIG. 23 is a control block diagram illustrating a refrigerator according to an embodiment of the disclosure.
  • FIGS. 1 through 23, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.
  • a control device is configured to obtain a specific value of a first state varying with time and identify a specific value of a second state corresponding to a state of a component based on the specific value of the first state at a predetermined period, and drive the component by using the specific value of the second state.
  • a refrigeration cycle control device capable of controlling a refrigeration cycle will be described as an example of the control device
  • a temperature of an inside or an outside of a refrigerator, in which a refrigeration cycle is embedded will be described as an example of the first state
  • setting a component forming the refrigeration cycle will be described as an example of the second state.
  • the predetermined period will be described as a period of time that is shorter than a period of time in which a state in which the refrigeration cycle cools a certain storage compartment is changed to a state in which the refrigeration cycle does not cool the certain storage compartment.
  • the period in which a state in which the refrigeration cycle cools a certain storage compartment is changed to a state in which the refrigeration cycle does not cool the certain storage compartment may include a period of time in which a state, in which a refrigerant flows to a refrigerating compartment or a freezing compartment because a compressor is turned on, is changed to a state, in which the refrigerant does not flow to the refrigerating compartment or the freezing compartment because the compressor is turned off.
  • the period may include a period of time in which a state, in which the refrigerant flows to the refrigerating compartment is changed to a state, in which the refrigerant does not flow to the refrigerating compartment and a period in which a state, in which the refrigerant flows to the freezing compartment is changed to a state, in which the refrigerant does not flow to the freezing compartment.
  • a period of time in which a storage compartment cooled by the refrigeration cycle is switched between the refrigerating compartment and the freezing compartment may be a typical example of such a period.
  • FIG. 1 is a block diagram illustrating an example of a functional configuration of a control device 1 according to an embodiment of the disclosure. As illustrated in FIG. 1, the control device 1 includes an acquirer 2, a control unit 3 and a driver 4.
  • the control device 1 may be implemented by including at least one of a memory (not shown) for storing algorithm for controlling the operation of the components or storing data for a program reproducing an algorithm, and a processor (not shown) for performing the above mentioned operation by using the data stored in the memory.
  • a memory not shown
  • the processor not shown
  • the memory and the processor may be implemented as separate chips.
  • the memory and the processor may be implemented on a single chip.
  • the acquirer 2, the control unit 3 and the driver 4 may be provided by at least one processor.
  • the acquirer 2 obtains information such as a present value of an internal temperature and an external temperature of the refrigerator and entire revolutions per minutes (RPM) of the compressor, and the acquirer 2 inputs the information to the control unit 3 at a predetermined period.
  • the acquirer 2 may correspond to a temperature sensor installed inside the refrigerator.
  • the acquirer 2 may correspond to a temperature sensor installed outside the refrigerator.
  • the entire RPM of the compressor may represent all kinds of number of revolutions performed by the compressor. For example, it is assumed that the RPM that is cannot be obtained due to the resonance is excluded.
  • the entire RPM of the compressor may not be obtained by the acquirer 2, but may be stored in advance by the control unit 3.
  • the internal temperature and the external temperature of the refrigerator may be used as an example of the first state
  • the present value of the internal temperature and the external temperature of the refrigerator may be used as an example of the specific value of the first state.
  • the acquirer 2 may be installed as an example of an acquirer configured to obtain a load variation of the storage compartment of the refrigerator and an acquirer configured to obtain the specific value of the first state.
  • the control unit 3 autonomously identifies the RPM of the compressor, which satisfies a temperature constraint condition (hereinafter referred to as 'constraint condition') and makes power consumption minimized, based on the present value of the internal temperature and the external temperature of the refrigerator and the entire RPM of the compressor, which are input through the acquirer 2, and the control unit 3 outputs a command value of the RPM to the driver 4.
  • a temperature constraint condition hereinafter referred to as 'constraint condition'
  • the command value may be reformed according to the period, or although the command value is the same as the present value, the command value may command a value of the RPM that is different from the present value.
  • a compressor is used as an example of a component configuring the refrigeration cycle and an example of a cooling component for cooling at least one storage compartment in the refrigerator.
  • the RPM of the compressor is used as an example of the second state corresponding to a setting of the component and an example of setting of a degree of cooling related to a cooling level using the cooling component.
  • the command value of the RPM of the compressor is used as an example of a drive value driving a component and the specific value of the second state.
  • a set value of a component that maximizes the internal humidity may be used as the specific value of the second state.
  • the control unit 3 is installed.
  • the driver 4 drives the compressor based on the command value output from the control unit 3 at the predetermined period.
  • the driver 4 is installed as an example of a driver for driving a component.
  • the control unit 3 includes a temperature estimator 5, a power estimator 6, and a controller 7.
  • the temperature estimator 5 periodically estimates a temperature change for each RPM of the compressor by using an estimation model based on the present value of the internal temperature and the external temperature of the refrigerator and the entire RPM of the compressor which are input through the acquirer 2, and the temperature estimator 5 inputs the temperature change to the controller 7.
  • the estimation model may be followed by deterioration of the heat insulating performance by being trained again periodically (for example, every half year).
  • a transfer function model and a neural network model may be used as the estimation model.
  • the power estimator 6 periodically estimates power consumption for each RPM of the compressor by using an estimation model based on the present value of the external temperature of the refrigerator and the entire RPM of the compressor which are input through the acquirer 2, and the temperature estimator 5 inputs the power consumption to the controller 7.
  • the estimation model may be followed by deterioration of the heat insulating performance by being trained again periodically (for example, every half year).
  • a transfer function model and a neural network model may be used as the estimation model.
  • the reason why the power estimator 6 does not use the present value of the internal temperature is because the present value of the internal temperature is within a limited narrow range to some extent and it is not appropriate to use the present value of the internal temperature. However, alternatively, the present value of the internal temperature may be used.
  • the controller 7 specifies a plurality of RPM satisfying the constraint condition based on the temperature change for each RPM of the compressor input from the temperature estimator 5. In addition, based on the power consumption for each RPM of the compressor input from the power estimator 6, the controller 7 autonomously selects the RPM of the compressor making the power consumption minimized among the specified plurality of RPM. The controller 7 outputs a command value commanding the identified RPM of the compressor. In this case, the RPM of the compressor may be different from the previous RPM or the same as the previous RPM.
  • control unit 3 may identify the command value of the RPM of the compressor by using artificial intelligence (AI).
  • AI artificial intelligence
  • the control unit 3 may vary the command value of the RPM of the compressor according to the load variation, based on an estimation model in which a command value of RPM of the compressor is identified by the AI.
  • control unit 3 may further include a data exchanger configured to exchange data with a plurality of motor (compressor or fan), and thus the control unit 3 may use a drive value of another motor for training the estimation model thereof.
  • the AI autonomously identifies the command value of the RPM of the compressor based on a past value of the internal temperature and the external temperature of the refrigerator and time series data in which a past command value of RPM of the compressor, which is identifyd based on the past value of the internal temperature and the external temperature, are accumulated in the time series manner.
  • the AI identifys a value of a correlated operation based on the load variation of the inside of the refrigerator and the lapse of time of the RPM of the compressor.
  • the AI may autonomously identify the value of the operation by considering RPM of a fan motor, a stop condition of the compressor with the lapse of time as well as the RPM of the compressor.
  • the AI may identify the value of the operation by considering the power consumption as well as the RPM of the compressor of the fan motor.
  • the AI may identify the value of the operation by considering the change in the RPM of the fan motor as well as the RPM of the fan motor.
  • a change value such as an internal and external humidity of the refrigerator, a temperature of an evaporator (e.g., a temperature of an inlet of the evaporator and a temperature of an outlet of the evaporator), a pressure of the compressor or the refrigerant (high pressure or low pressure), and a flow of rate of the refrigerant, may be used as other parameters.
  • a temperature of an evaporator e.g., a temperature of an inlet of the evaporator and a temperature of an outlet of the evaporator
  • a pressure of the compressor or the refrigerant high pressure or low pressure
  • a flow of rate of the refrigerant may be used as other parameters.
  • FIG. 2 is a graph illustrating a temperature change of each RPM of the compressor input to the controller 7 from the temperature estimator 5.
  • a thick vertical line indicates a constraint condition. That is, cooling performed at a temperature -18 ° C or lower to time t is defined as a constraint condition.
  • 1100RPM to 2050RPM to which "X" is assigned does not satisfy the constraint condition and 2100RPM to 3700RPM to which ?0" is assigned satisfies the constraint condition. Therefore, the controller 7 specifies from 2100RPM to 3700RPM for the RPM of the compressor satisfying the constraint condition. That is, the RPM of the compressor that is selectable may be narrow down by the constraint condition.
  • the graph illustrating the temperature change for each RPM of the compressor is used as an example of the change of the first state value for each of a plurality of values of the second state.
  • FIG. 3 is a table illustrating power consumption for each RPM of the compressor input to the controller 7 from the power estimator 6.
  • the controller 7 selects and outputs the RPM of the compressor having the smallest power consumption among a plurality of specified RPM, based on the power consumption for each RPM of the compressor. Particularly, the controller 7 selects 2100RPM in which the power consumption is the smallest from 2100RPM to 3700RPM to which '0' is assigned, as surrounded by a thick frame. At this time, it is considered that the regularity, in which the power consumption is increased as the RPM of the compressor is increased, is not guaranteed due to the characteristics of the motor efficiency, and thus the RPM of the compressor having the smallest power consumption is identified as mentioned above.
  • the RPM of the compressor having the smallest power consumption among the specified plurality of RPM based on the power consumption for each RPM of the compressor is not selected, but the smallest RPM among the specified plurality of RPM is selected.
  • the RPM of the compressor having the smallest power consumption is selected because of the purpose of energy saving, but alternatively, the RPM of the compressor may be selected by using an indicator other than the power consumption.
  • the internal humidity of the refrigerator may be used as the indicator.
  • the power consumption for each RPM of the compressor is used as an example of the indicator for each of at least two values in the second state.
  • FIG. 4 is a graph illustrating a change in the RPM of the compressor output by the controller 7.
  • a broken line shows a change in the RPM of a compressor in a conventional refrigerator
  • a solid line shows a change in the RPM of the compressor in the refrigerator to which an embodiment is applied.
  • the controller 7 outputs the RPM having the smallest power consumption every estimated period, as a command value.
  • the compressor operates until time t 1 with the minimum necessary RPM.
  • the compressor operates while slightly increasing the RPM until time t 3 .
  • the compressor operates while slightly reducing the RPM until time t 8 .
  • the constraint condition is satisfied at the time t 8 , and thus the RPM of the compressor is not changed at time t 6 and time t 7 .
  • the RPM of the compressor may be changed at time t 6 and time t 7. Accordingly, it may be expected again that the constraint condition is satisfied at time t 8 or it may be expected again that the constraint condition is satisfied after time t 8 not at time t 8 .
  • time t 8 is an example of an end of a period
  • a period from time t 0 to time t 8 is an example of a period in which it is expected that the constraint condition is satisfied at the end point of the period.
  • Estimating the RPM of the compressor at time t 6 and time t 7 is an example of estimating whether the constraint condition is satisfied at the end point of the period, a plurality of times.
  • FIG. 5A is a graph illustrating a change in the temperature and RPM of a compressor in the conventional refrigerator.
  • a graph showing the change in the RPM of the compressor indicates that the refrigerator detects the opening and closing of the door and then raises the RPM of the compressor for a predetermined period.
  • a graph showing the change in the temperature indicates that the temperature is instantly increased due to the opening and closing of the door, and then the temperature is suddenly decreased because a state in which the RPM of the compressor is increased is maintained for the predetermined period.
  • FIG. 5B is a graph illustrating a change in the temperature and RPM of the compressor in the refrigerator to which an embodiment is applied.
  • the RPM of the compressor may be changed based on the difference because the change in the internal temperature is periodically estimated. That is, periodically estimating and determining the RPM of the compressor having the smallest power consumption is equivalent to performing feedback based on the difference even when the estimation is deviated.
  • the graph showing the change in the RPM of the compressor indicates that the refrigerator may instantly increase the RPM of the compressor by detecting opening and closing of the door, but the refrigerator may decrease the RPM of the compressor by quantitatively detecting the thermal load indirectly by a displacement of the temperature change in the estimation of the temperature change in a state in which the food is not put. Further, the graph showing the change of the temperature indicates that the temperature is instantly increased due to the opening and closing of the door, and then the RPM of the compressor is decreased, and thus the temperature is gradually decreased in comparison with the conventional refrigerator.
  • FIG. 6 is a flow chart illustrating an operation example of the controller 7. This operation example is repeatedly executed at the predetermined period.
  • the controller 7 receives an input of the temperature change for each RPM of the compressor from the temperature estimator 5 (S101). Further, the controller 7 receives an input of the power consumption for each RPM of the compressor from the power estimator 6 (S102). It is described that step 102 is executed after executing step 101, but is not limited thereto. Alternatively, step 101 may be executed after executing step 102 or step 101 and step 102 may be executed simultaneously.
  • the controller 7 specifies a plurality of RPM satisfying the constraint condition based on the temperature change for each RPM of the compressor corresponding to the input received in step 101 (S103).
  • the controller 7 identifies the RPM of the compressor having the smallest power consumption among the plurality of RPM specified in step 103, based on the power consumption for each RPM of the compressor corresponding to the input received in step 102 (S104).
  • controller 7 outputs a command value indicating the RPM of the compressor identified in step 104 (S105).
  • the control unit 3 estimates the temperature change and the power consumption for each RPM of the compressor, outputs a command value of RPM of the compressor that satisfies the constraint condition and minimizes power consumption, and allows the driver 4 to drive the compressor based on the command value, but is not limited thereto.
  • the control unit 3 may estimate the temperature change and the power consumption for each opening degree of the expansion valve, outputs a command value of opening degree of the expansion valve that satisfies the constraint condition and minimizes power consumption, and allows the driver 4 to drive the expansion valve based on the command value.
  • control unit 3 may estimate the temperature change and the power consumption for each RPM of the fan, outputs a command value of RPM of the fan that satisfies the constraint condition and minimizes power consumption, and allows the driver 4 to drive the fan based on the command value.
  • FIG. 7 is a view illustrating an example of an overall configuration of the refrigerator 10 according to an embodiment of the disclosure.
  • the refrigerator 10 includes a refrigerating compartment 41 as an example of a storage compartment and a first storage compartment formed in the upper portion of the inside of the refrigerator, and a freezing compartment 42 as an example of a storage compartment and a second storage compartment formed in the lower portion of the inside of the refrigerator.
  • the refrigerator 10 includes a compressor 60 compressing and circulating a refrigerant, an evaporator 11 evaporating the refrigerant circulated by the compressor 60, a fan 14 blowing cool air to the evaporator 11, a damper 47 transmitting air blown by the fan 14 to the refrigerating compartment 41, and a damper 48 transmitting air blown by the fan 14 to the freezing compartment 42.
  • the refrigerator 10 includes a refrigerating compartment door 44 opened and closed for storing foods into the refrigerating compartment 41, a freezing compartment door 45 opened and closed to store foods into the freezing compartment 42, an intermediate partition wall 51 separating the refrigerating compartment 41 from the freezing compartment 42 and a rear wall 54 installed in the rear side cross over the refrigerating compartment 41 to the freezing compartment 42.
  • FIG. 8 is a view illustrating a configuration of a refrigeration cycle 100 corresponding to an example of a refrigeration cycle device embedded in the refrigerator 10.
  • the refrigeration cycle 100 includes a compressor 60 circulating a refrigerant and a condenser 70 condensing the refrigerant circulated by the compressor 60.
  • the evaporator 11 evaporating the refrigerant condensed by the condenser 70 to cool at least one of the refrigerating compartment 41 and the freezing compartment 42 is connected to the condenser 70.
  • an expansion valve 81 and a capillary tube 17 that are to expand the refrigerant flowing into the evaporator 11 is connected to the inlet side of the evaporator 11.
  • the refrigeration cycle 100 includes the control device 1 described with reference to FIGS. 1 to 6.
  • the control device 1 based on the present value of the internal temperature and the external temperature of the refrigerator, the control device 1 identifies a command value of at least one compartment among the RPM of the compressor 60, the opening degree of the expansion valve 81, and the RPM of the fan 14, which satisfy the constraint condition and minimize the power consumption, at the predetermined period.
  • the control device 1 drives the corresponding component by using the command value.
  • FIG. 9 is a graph illustrating a temperature change in a state in which the refrigerating compartment 41 and the freezing compartment 42 are alternately cooled by using the refrigeration cycle 100.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42.
  • the control device 1 controls the cooling capacity in such a way that timing for a compartment in which cooling is performed is adjusted for a compartment in which a temperature thereof is increased between the refrigerating compartment 41 and the freezing compartment 42.
  • the control device 1 estimates a point of time at which the temperature of the freezing compartment 42 reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which a temperature of the refrigerating compartment 41 reaches a lower limit temperature (OFF point) until time t 12.
  • the control device 1 estimates a point of time at which the temperature of the refrigerating compartment 41 reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which the temperature of the freezing compartment 42 reaches a lower limit temperature (OFF point) until time t 14.
  • OFF point a lower limit temperature
  • the operation of the compressor 60 is stopped from time t 13 to time 14 .
  • timing may be adjusted by performing the cooling cycle on a compartment requiring the cooling, integer number of times until the compartment having the temperature increased between the refrigerating compartment 41 and the freezing compartment 42 reaches the upper limit temperature (ON point). In the example of FIG.
  • the constraint condition is that any one of the first storage compartment and the second storage compartment is decreased to reach the predetermined temperature until the other of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature.
  • FIG. 10 is a graph illustrating a temperature change in a state in which the refrigerating compartment 41 and the freezing compartment 42 are simultaneously cooled by using the refrigeration cycle 100.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42.
  • the control device 1 simultaneously starts cooling the refrigerating compartment 41 and the freezing compartment 42, and adjusts the cooling ability to allow the increase of the temperature of the refrigerating compartment 41 and the freezing compartment 42 to be simultaneously terminated.
  • the control device 1 starts simultaneously cooling of the refrigerating compartment 41 and the freezing compartment 42 at time t 16 , and when the temperature of the refrigerating compartment 41 reaches a lower limit temperature (OFF point) at time t 17 , the control device 1 starts cooling only the freezing compartment 42. At this time, the control device 1 estimates a point of time at which the temperature of the refrigerating compartment 41 reaches an upper limit temperature (ON point). When the estimated time is time t 19 , the control device 1 controls the RPM of the compressor 60 under the constraint condition in which a temperature of the freezing compartment 42 reaches an upper limit temperature (ON point) until time t 19.
  • the control device 1 estimates that the temperature thereof is increased and reaches ON point at time t 19 and adjusts the RPM of the compressor 60. Further, when the load balances of the refrigerating compartment 41 and the freezing compartment 42 are significantly different from each other, timing may be adjusted by performing the cooling cycle on one of the refrigerating compartment 41 or the freezing compartment 42, integer number of times until the other of the refrigerating compartment 41 or the freezing compartment 42 reaches the lower limit temperature (OFF point). In the example of FIG.
  • the constraint condition is that any one of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature until the other of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature.
  • the refrigerator 10 may realize the energy saving by setting the RPM of the compressor 60 to be slightly lowered.
  • FIG. 11 is a view illustrating an example of an overall configuration of a refrigerator 20 to which an embodiment is applied.
  • the refrigerator 20 includes a refrigerating compartment 41 as an example of a storage compartment and a first storage compartment formed in the upper portion of the inside of the refrigerator, and a freezing compartment 42 as an example of a storage compartment and a second storage compartment formed in the lower portion of the inside of the refrigerator.
  • the refrigerator 20 includes a compressor 60 compressing and circulating a refrigerant.
  • the refrigerating compartment 41 includes a refrigerating evaporator 21 evaporating the refrigerant circulated by the compressor 60 to cool the refrigerating compartment 41, and a refrigerating fan 24 blowing the air cooled by the refrigerating evaporator 21 to the refrigerating compartment 41.
  • the freezing compartment 42 includes a freezing evaporator 22 evaporating the refrigerant circulated by the compressor 60 to cool the freezing compartment 42, and a freezing fan 25 blowing the air cooled by the freezing evaporator 22 to the freezing compartment 42.
  • the refrigerator 20 includes a refrigerating compartment door 44 opened and closed for storing foods into the refrigerating compartment 41, a freezing compartment door 45 opened and closed to store foods into the freezing compartment 42, an intermediate partition wall 51 separating the refrigerating compartment 41 from the freezing compartment 42 and a rear wall 54 installed in the rear side cross over the refrigerating compartment 41 to the freezing compartment 42.
  • FIG. 12 is a view illustrating a configuration of a refrigeration cycle 201 corresponding to an example of a refrigeration cycle device embedded in the refrigerator 20.
  • the refrigeration cycle 201 includes a compressor 60 circulating a refrigerant and a condenser 70 condensing the refrigerant circulated by the compressor 60.
  • the refrigerating evaporator 21 evaporating the refrigerant circulated by the compressor 60 to cool the refrigerating compartment 41 and the freezing evaporator 22 evaporating the refrigerant circulated by the compressor 60 to cool the freezing compartment 42 are connected in parallel to each other in the condenser 70.
  • an expansion valve 82 configured to switch the evaporator, which sends the refrigerant condensed by the condenser 70, between the refrigerating evaporator 21 and the freezing evaporator 22 is installed. Further, an outlet side of the refrigerating evaporator 21 and an outlet side of the freezing evaporator 22 are connected to the compressor 60.
  • a refrigerating capillary tube 27 expending the refrigerant flowing from the refrigerating evaporator 21 is connected to an inlet side of the refrigerating evaporator 21.
  • a freezing capillary tube 28 expending the refrigerant flowing from the freezing evaporator 22 is connected to an inlet side of the freezing evaporator 22.
  • a check valve 90 configured to prevent the refrigerant from flowing back from the high pressure side of the refrigeration cycle 201 to the freezing evaporator 22 is installed to be directed to the compressor 60.
  • the refrigeration cycle 201 includes the control device 1 described with reference to FIGS. 1 to 6.
  • the control device 1 based on the present value of the internal temperature and the external temperature of the refrigerator, the control device 1 identifies a command value of at least one compartment among the RPM of the compressor 60, the opening degree of the expansion valve 82, and the RPM of the fan 14, which satisfy the constraint condition and minimize the power consumption, at the predetermined period.
  • the control device 1 drives the corresponding component by using the command value.
  • the expansion valve 82 is provided for switching the evaporator that sends the refrigerant condensed by the condenser 70, but a switching valve may be provided instead of the expansion valve 82.
  • FIG. 13 is a graph illustrating a temperature change in a state in which the refrigerating compartment 41 and the freezing compartment 42 are cooled by using the refrigeration cycle 201.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42.
  • the control device 1 controls the cooling capacity in such a way that timing for a compartment in which cooling is performed is adjusted for a compartment in which a temperature thereof is increased between the refrigerating compartment 41 and the freezing compartment 42.
  • the control device 1 estimates a point of time at which the temperature of the freezing compartment 42 reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which a temperature of the refrigerating compartment 41 reaches a lower limit temperature (OFF point) until time t 22.
  • the control device 1 estimates a point of time at which the temperature of the refrigerating compartment 41 reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which the temperature of the freezing compartment 42 reaches a lower limit temperature (OFF point) until time t 25.
  • OFF point a lower limit temperature
  • the operation of the compressor 60 is stopped from time t 24 to time 25 .
  • the refrigerator 20 performs a refrigerant recovery operation by switching the evaporator sending the refrigerant from the freezing evaporator 22 to the refrigerating evaporator 21 from time t 23 to time t 24.
  • timing may be adjusted by performing the cooling cycle on the compartment requiring the cooling, integer number of times until the compartment having the temperature increased between the refrigerating compartment 41 and the freezing compartment 42 reaches the upper limit temperature (ON point).
  • the constraint condition is that any one of the first storage compartment and the second storage compartment is decreased to reach the predetermined temperature until the other of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature.
  • FIG. 14 is a view illustrating a configuration of a refrigeration cycle 202 corresponding to another example of a refrigeration cycle device embedded in the refrigerator 20.
  • the refrigeration cycle 202 includes a compressor 60 circulating a refrigerant and a condenser 70 condensing the refrigerant circulated by the compressor 60.
  • a refrigerating evaporator 21 evaporating the refrigerant circulated by the compressor 60 to cool the refrigerating compartment 41 and a freezing evaporator 22 evaporating the refrigerant circulated by the compressor 60 to cool the freezing compartment 42 are connected in series with each other in the condenser 70.
  • an expansion valve 82 configured to switch an evaporator, which sends the refrigerant condensed by the condenser 70, between both side of the refrigerating evaporator 21 and the freezing evaporator 22, and only the freezing evaporator 22 side, is installed. Further, an outlet side of the refrigerating evaporator 21 is connected to an inlet side of the freezing evaporator 22. An outlet side of the freezing evaporator 22 is connected to the compressor 60.
  • a refrigerating capillary tube 27 expending the refrigerant flowing from the refrigerating evaporator 21 is connected to an inlet side of the refrigerating evaporator 21.
  • a freezing capillary tube 28 expending the refrigerant flowing from the freezing evaporator 22 is connected to an inlet side of the freezing evaporator 22.
  • the refrigeration cycle 202 includes the control device 1 described with reference to FIGS. 1 to 6.
  • the control device 1 based on the present value of the internal temperature and the external temperature of the refrigerator, the control device 1 identifies a command value of at least one compartment among the RPM of the compressor 60, the opening degree of the expansion valve 82 and the RPM of the fan 14, which satisfy the constraint condition and minimize the power consumption, at the predetermined period.
  • the control device 1 drives the corresponding component by using the command value.
  • the expansion valve 82 is provided for switching the evaporator that sends the refrigerant condensed by the condenser 70, but a switching valve may be provided instead of the expansion valve 82.
  • FIG. 15 is a graph illustrating a temperature change in a state in which the refrigerating compartment 41 and the freezing compartment 42 are cooled by using the refrigeration cycle 202.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42.
  • the control device 1 simultaneously starts cooling the refrigerating compartment 41 and the freezing compartment 42, and adjusts the cooling ability to allow the increase of the temperature of the refrigerating compartment 41 and the freezing compartment 42 to be simultaneously terminated.
  • the control device 1 starts simultaneously cooling of the refrigerating compartment 41 and the freezing compartment 42 at time t 26 , and when the temperature of the refrigerating compartment 41 reaches a lower limit temperature (OFF point) at time t 27 , the control device 1 starts cooling only the freezing compartment 42. At this time, the control device 1 estimates a point of time at which the temperature of the refrigerating compartment 41 reaches an upper limit temperature (ON point). When the estimated time is time t 29 , the control device 1 controls the RPM of the compressor 60 under the constraint condition in which a temperature of the freezing compartment 42 reaches an upper limit temperature (ON point) until time t 29.
  • the control device 1 estimates that the temperature thereof is increased and reaches ON point at time t 29 and adjusts the RPM of the compressor 60. Further, when the load balances of the refrigerating compartment 41 and the freezing compartment 42 are significantly different from each other, timing may be adjusted by performing the cooling cycle on one of the refrigerating compartment 41 and the freezing compartment 42, integer number of times until the other the refrigerating compartment 41 and the freezing compartment 42 reaches the lower limit temperature (OFF point). In the example of FIG.
  • the constraint condition is that any one of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature until the other of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature.
  • FIG. 16 is a view illustrating an example of an overall configuration of a refrigerator 30 to which an embodiment is applied.
  • the refrigerator 30 includes a refrigerating compartment 41 as an example of a storage compartment and a first storage compartment formed in the upper portion of the inside of the refrigerator, a freezing compartment 42 as an example of a storage compartment and a second storage compartment formed in the lower portion of the inside of the refrigerator, and a variable temperature compartment 43 as an example of a storage compartment and a second storage compartment formed in the middle portion of the inside of the refrigerator.
  • the refrigerator 30 includes a compressor 60 compressing and circulating a refrigerant.
  • the refrigerating compartment 41 includes a refrigerating evaporator 31 evaporating the refrigerant circulated by the compressor 60 to cool the refrigerating compartment 41, and a refrigerating fan 34 blowing the air cooled by the refrigerating evaporator 31 to the refrigerating compartment 41.
  • the freezing compartment 42 includes a freezing evaporator 32 evaporating the refrigerant circulated by the compressor 60 to cool the freezing compartment 42, and a freezing fan 35 blowing the air cooled by the freezing evaporator 32 to the freezing compartment 42.
  • the variable temperature compartment 43 includes a variable temperature compartment evaporator 33 evaporating the refrigerant circulated by the compressor 60 to cool the variable temperature compartment 43, and a variable temperature compartment fan 36 blowing the air cooled by the variable temperature compartment evaporator 33 to the variable temperature compartment 43.
  • the refrigerator 30 includes a refrigerating compartment door 44 opened and closed for storing foods into the refrigerating compartment 41, a freezing compartment door 45 opened and closed to store foods into the freezing compartment 42, a variable temperature compartment door 46 opened and closed for storing foods into the variable temperature compartment 43, an intermediate partition wall 52 separating the refrigerating compartment 41 from the variable temperature compartment 43, an intermediate partition wall 53 separating the freezing compartment 42 from the variable temperature compartment 43, and a rear wall 54 installed in the rear side cross over the refrigerating compartment 41 to the freezing compartment 42.
  • FIG. 17 is a view illustrating a configuration of a refrigeration cycle 300 corresponding to another example of a refrigeration cycle device embedded in the refrigerator 30.
  • the refrigeration cycle 300 includes a compressor 60 circulating a refrigerant and a condenser 70 condensing the refrigerant circulated by the compressor 60.
  • a refrigerating evaporator 31 evaporating the refrigerant circulated by the compressor 60 to cool the refrigerating compartment 41, a freezing evaporator 32 evaporating the refrigerant circulated by the compressor 60 to cool the freezing compartment 42, and a variable temperature compartment evaporator 33 as an example of a third cooler evaporating the refrigerant condensed by the condenser 70 to cool the variable temperature compartment 43 are connected in parallel to each other in the condenser 70.
  • an expansion valve 82 configured to switch an evaporator, which sends the refrigerant condensed by the condenser 70, among the refrigerating evaporator 31, the freezing evaporator 32, and the variable temperature compartment evaporator 33 is installed. Further, an outlet side of the refrigerating evaporator 31 and an outlet side of the freezing evaporator 32 are connected to the compressor 60. An outlet side of the variable temperature compartment evaporator 33 is connected to an inlet side of the freezing evaporator 32.
  • a refrigerating capillary tube 37 expending the refrigerant flowing from the refrigerating evaporator 31 is connected to an inlet side of the refrigerating evaporator 31.
  • a freezing capillary tube 38 expending the refrigerant flowing from the freezing evaporator 32 is connected to the inlet side of the freezing evaporator 32.
  • a variable temperature compartment capillary tube 39 expending the refrigerant flowing to the variable temperature compartment evaporator 33 is connected to an inlet side of the variable temperature compartment evaporator 33.
  • a check valve 90 configured to prevent the refrigerant from flowing back from the high pressure side of the refrigeration cycle 300 to the freezing evaporator 32 is installed to be directed to the compressor 60.
  • the refrigeration cycle 300 includes the control device 1 described with reference to FIGS. 1 to 6.
  • the control device 1 based on the present value of the internal temperature and the external temperature of the refrigerator, the control device 1 identifies a command value of at least one compartment among the RPM of the compressor 60, the opening degree of the expansion valve 83, and the RPM of the fan 14, which satisfy the constraint condition and minimize the power consumption, at the predetermined period.
  • the control device 1 drives the corresponding component by using the command value.
  • the expansion valve 83 is provided for switching the evaporator that sends the refrigerant condensed by the condenser 70, but a switching valve may be provided instead of the expansion valve 83.
  • FIG. 18 is a graph illustrating a temperature change in a state in which the refrigerating compartment 41, the freezing compartment 42 and the variable temperature compartment 43 (hereinafter referred to as 'freezing/variable temperature compartment) are cooled by using the refrigeration cycle 300.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42
  • “CV” represents a change in the temperature of the variable temperature compartment 43.
  • the control device 1 controls the cooling capacity in such a way that timing for a compartment in which cooling is performed is adjusted for a compartment in which a temperature thereof is increased between the refrigerating compartment 41 and the freezing/variable temperature compartment.
  • the control device 1 estimates a point of time at which the temperature of the freezing/variable temperature compartment reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which a temperature of the refrigerating compartment 41 reaches a lower limit temperature (OFF point) until time t 32.
  • the control device 1 estimates a point of time at which the temperature of the refrigerating compartment 41 reaches an upper limit temperature (ON point).
  • the control device 1 controls the RPM of the compressor 60 under the constraint condition in which the temperature of the freezing/variable temperature compartment reaches a lower limit temperature (OFF point) until time t 34.
  • OFF point a lower limit temperature
  • the operation of the compressor 60 is stopped from time t 33 to time 34 .
  • timing may be adjusted by performing the cooling cycle on the compartment requiring the cooling, integer number of times until the compartment having the temperature increased between the refrigerating compartment 41 and the freezing/variable temperature compartment reaches the upper limit temperature (ON point).
  • the constraint condition is that any one of the first storage compartment and the second storage compartment is decreased to reach the predetermined temperature until the other of the first storage compartment and the second storage compartment is increased to reach the predetermined temperature.
  • the temperature estimator 5 periodically estimates a temperature change for each RPM of the compressor by using an estimation model based on the present value of the internal temperature and the external temperature of the refrigerator and the entire RPM of the compressor which are input through the acquirer 2, and the temperature estimator 5 inputs the temperature change to the controller 7.
  • estimation of the temperature change in the temperature estimator 5 will be described in details.
  • the transfer function model is used as the estimation model. That is, it is assumed that the RPM of the compressor 60 (hereinafter simply referred to as “the RPM of the compressor") or the outside air temperature is an input U (s), an internal temperature of the refrigerating compartment 41 (hereinafter simply referred to as “refrigerating compartment temperature”) or an internal temperature of the freezing compartment 42 (hereinafter simply referred to as “freezing compartment temperature”) is an output Y(s), and an estimation model is a transfer function G (s). Accordingly, the output Y(s) is derived from the input U (s) using the transfer function G (s), as shown in Math Figure 1.
  • the estimation model is divided into four models (model #1 to model #4).
  • FIG. 19 is a view illustrating the temperature change in the refrigerating compartment 41 and the freezing compartment 42 in the second application example, particularly, illustrating how to estimate the temperature change by using any model at any section.
  • a vertical axis represents a temperature
  • "R” represents a change in the temperature of the refrigerating compartment 41
  • "F” represents a change in the temperature of the freezing compartment 42.
  • the model # 1 is used to estimate the temperature change of the refrigerating compartment 41 in a section from time t 21 to time t 22 .
  • This section is a section in which the refrigerating compartment 41 is cooled by the operation of the compressor 60. Therefore, in this section, the transfer function G (s) is set as the model # 1, the input U (s) is set as the RPM of the compressor, and the output Y (s) is set as the refrigerating compartment temperature.
  • the model # 2 is used to estimate the temperature change of the refrigerating compartment 41 in a section from time t 22 to time t 25 .
  • This section is a section in which the refrigerating compartment 41 is not cooled. Therefore, in this section, the transfer function G (s) is set as the model # 2, the input U (s) is set as the outside air temperature, and the output Y (s) is set as the refrigerating compartment temperature.
  • the model # 3 is used to estimate the temperature change of the freezing compartment 42 in a section from time t 20 to time t 22 .
  • This section is a section in which the freezing compartment 42 is not cooled. Therefore, in this section, the transfer function G (s) is set as the model # 3, the input U (s) is set as the outside air temperature, and the output Y (s) is set as the freezing compartment temperature.
  • the model # 4 is used to estimate the temperature change of the freezing compartment 42 in a section from time t 22 to time t 24 .
  • This section is a section in which the freezing compartment 42 is cooled. Therefore, in this section, the transfer function G (s) is set as the model # 4, the input U (s) is set as the RPM of the compressor, and the output Y (s) is set as the freezing compartment temperature.
  • the transfer function is expressed as an overlap of a plurality of thermal conductions such as the thermal conduction from the inside of the refrigerator to the outside of the refrigerator, the thermal conduction between the refrigerating compartment 41 and the freezing compartment 42, the thermal conduction between the inside of the refrigerator and the machine room, and the thermal conduction between the evaporator and the inside of the refrigerator. Further, a dead time until the refrigerant evaporates in the evaporator through the pipe and a dead time until the cool air is blown from the evaporator by the fan to cool the inside of the refrigerator are added.
  • the transfer function G (s) is the transfer function of the first order lag plus dead time, and each model is approximated by this transfer function.
  • the transfer function G (s) is expressed by the following Math Figure 2.
  • FIG. 20 is a graph particularly illustrating estimation of the change in the temperature of the refrigerating compartment 41 at the section from time t 21 to time t 22 of FIG. 19.
  • the model # 1 is used as described above.
  • the refrigerating compartment temperature at time t 21 is identified by the acquirer 2 . It is assumed that the refrigerating compartment temperature is 5.
  • the temperature estimator 5 obtains an estimation curve C 0 of the temperature change based on the refrigerating compartment temperature. Although the estimation curve of the temperature change is actually obtained for each of the RPM of the plurality of compressors, an estimate curve, which is related to the RPM of the compressor having the smallest power consumption among the RPM of the compressor to reach a temperature satisfying the constraint condition at time t 22, is only illustrated in order to avoid the complication of the graph.
  • the refrigerating compartment temperature is identified from the acquirer 2 again at time t 211 that is after a short period. In this case, it is assumed that the refrigerating compartment temperature is 3. 5.
  • the temperature estimator 5 obtains an estimation curve C 1 of the temperature change based on the refrigerating compartment temperature.
  • an estimate curve which is related to the RPM of the compressor having the smallest power consumption among the RPM of the compressor to reach a temperature satisfying the constraint condition at time t 22, is only illustrated in order to avoid the complication of the graph.
  • the refrigerating compartment temperature is identified from the acquirer 2 again at time t 211 that is after a short period.
  • the refrigerating compartment temperature is 2.5.
  • the temperature estimator 5 obtains an estimation curve C 2 of the temperature change based on the refrigerating compartment temperature.
  • an estimation curve which is related to the RPM of the compressor having the smallest power consumption among the RPM of the compressor that is to reach a temperature satisfying the constraint condition at time t 22, is only illustrated in order to avoid the complication of the graph.
  • the temperature estimator 5 repeatedly estimates the temperature change at a short period.
  • the controller 7 controls the RPM of the compressor so that the temperature reaches a temperature satisfying the constraint condition at time t 22 and the power consumption becomes the smallest.
  • the refrigerating compartment temperature is changed in a linear shape having a different slope for each period from time t 21 to time t 22, as illustrated in FIG. 20. That is, it is illustrated that the refrigerating compartment temperature is changed in a linear shape due to limitations in drawings, but is not limited thereto. Therefore, the refrigerating compartment temperature may be changed in a linear shape having a slope as illustrated in FIG. 20.
  • a state of the estimation model which is used to estimate the temperature change based on the refrigerating compartment temperature of 5 obtained from the acquirer 2 at time t 211 and the refrigerating compartment temperature of 3.5 obtained from the acquirer 2 at time t 211, is used as well as the refrigerating compartment temperature of 2.5 obtained from the acquirer 2 at time t 212.
  • the state equation expresses the relationship between the input u (t) and the state vector x (t), and is expressed by Math Figure 3.
  • the output equation represents the relationship between the state vector x (t) and the output y (t), and is expressed by Math Figure 4.
  • the state vector x (t) corresponds to the state of the estimation model that is used to estimate the temperature change at the past actual temperature based on the past actual temperature. For example, information on the temperature change at the past actual temperature, which is a result of estimation based on the past actual temperature, is reflected to an initial value x (0) of the state vector x (t).
  • parameter K, T, and L of the transfer function G (s) is obtained by a function of the outside air temperature FK (x), FT(x), and FL (x).
  • the function F (x) is a general quadratic curve expression.
  • the function F (x) may be expressed by Math Figure 5.
  • Coefficients a to c may be obtained by comparing the temperature change, which is obtained from the state function in which values of the functions FK (x), FT (x), and FL (x), to which the outside air temperature (x) is given that is parameters K, T, and L are set, with the temperature change that is actually observed, and by using least square method.
  • parameter K, T, and L of the transfer function G (s) is obtained by a function FK(x, y), FT(x, y) and FL(x, y) of the outside air temperature (x) and the RPM of the compressor (y).
  • the functions FK(x, y), FT(x, y) and FL (x, y) are collectively represented by the function F (x, y)
  • the function F (x, y) is a general quadratic curved surface expression.
  • the function F (x, y) may be expressed by Math Figure 6.
  • Coefficients a to f may be obtained by comparing the temperature change, which is obtained from the state function in which values of the functions FK(x, y), FT(x, y) and FL(x, y), to which the outside air temperature (x) and the RPM of the compressor (y) are given, that is parameters K, T, and L are set, with the temperature change that is actually observed, and by using least square method.
  • equations of the functions F(x) and F(x, y) are merely examples, but are not limited thereto.
  • this equation may be used for the equation of the curve or a curved surface.
  • different equations may be used for each section, and equations of straight lines or planes that simply interpolate observed points may be used instead of equations of curves or curved surfaces.
  • FIG. 21 is a view illustrating an example of a quadratic curved surface of the function F (x, y).
  • FIG. 21 illustrates a quadratic curved surface of the function F (x, y) representing the functions FK(x, y), FT(x, y) and FL(x, y) as the same shaped quadratic curved surface
  • a quadratic curved surface of the function FT (x, y) and a quadratic curved surface of the function FL (x, y) have different shapes.
  • the shape of the quadratic curved surface of the function FK(x, y), FT(x, y) and FL(x, y) are determined by giving some data as the outside air temperature (x) and the RPM of the compressor (y) upon training.
  • a value of the functions FK(x, y), FT(x, y) and FL(x, y) that is parameters K, T, and L are obtained by giving an outside air temperature and the RPM of the compressor at a point of time, as the outside air temperature (x) and the RPM of the compressor (y).
  • the quadratic curve of the function F (x) is not shown, the shape of the quadratic curved surface of the function FK(x), FT(x) and FL(x) are determined by giving some data as the outside air temperature (x) and the RPM of the compressor (y) upon training.
  • the RPM of the compressor 60 for reducing power consumption may be autonomously set in accordance with the temperature change due to the disturbance. That is, it is possible to autonomously change the RPM of the compressor 60 in accordance with the difference between the estimated temperature change and the actual temperature change.
  • FIG. 22A is a graph illustrating a change in the temperature of the refrigerating compartment
  • FIG. 22B is a graph illustrating a change in the temperature of the freezing compartment
  • FIG. 22C is a graph a change in the RPM of the compressor.
  • the freezing compartment door 45 is opened and food is put into the freezing compartment 42 immediately before time t 51 . That is, it is assumed that the thermal load on the freezing compartment 42 is increased. In this case, because the temperature in the freezing compartment is instantly increased, the temperature in the freezing compartment is decreased by increasing the RPM of the compressor 60.
  • the RPM of the compressor 60 is determined in accordance with the maximum value assumed as the thermal load, as indicated by the broken line in FIG. 22C. Therefore, even when the temperature in the refrigerating compartment reaches the upper limit of the temperature range allowed in the refrigerating compartment 41 at time t 53 as shown in FIG. 22A, the temperature in the freezing compartment reaches the lower limit of the temperature range allowed by the freezing compartment 42 at the time t 52 earlier than the time t 53, as indicated by the broken line in FIG. 22B, and thus it is difficult to achieve the energy saving.
  • the thermal load is estimated in a short period and the RPM of the compressor 60 is determined in accordance with the estimated load, as indicated by the solid line in FIG. 22C. Therefore, when the temperature in the refrigerating compartment reaches the upper limit of the temperature range allowed in the refrigerating compartment 41 at time t 53 as illustrated in FIG. 22A, the temperature in the freezing compartment may reach the lower limit of the temperature range allowed by the freezing compartment 42 at time t 53 , as illustrated by the solid line in FIG. 22B and it is possible to achieve the energy saving.
  • FIG. 23 is a control block diagram of a refrigerator 40 according to an embodiment of the disclosure.
  • a refrigerator 40 includes a compressor 60, a condenser 70, a cooling component 80, an obtain r 2, a control unit 3 and a driver 4.
  • the obtain r 2, the control unit 3 and the driver 4 may be provided as at least one processor P.
  • the compressor 60 may be provided with a configuration for circulating the refrigerant.
  • the RPM of the compressor 60 may be changed by at least one processor P.
  • the cooling component 80 may include an expansion valve 83 and a fan 14.
  • At least one processor P may obtain the load variation of the storage compartment of the refrigerator including the refrigeration cycle, and may identify a drive value for driving the components constituting the refrigeration cycle based on the load variation.
  • the at least one processor P may drive the cooling component based on the drive value. Further, the at least one processor P may obtain the load variation over time during at least one cooling cycle in which the refrigeration cycle cools the storage compartment.
  • the refrigerator is illustrated in the refrigerator catalog that the power consumption has about 3% margin.
  • individual differences in the heat insulating performance are excluded, individual differences caused by variations in the refrigeration cycle components such as differences in the ease of flow of the refrigerant, may be reduced. In other words, it is possible to maximize performance for all objects. Therefore, it is possible to write out the power consumption without a margin in the catalog of the refrigerator
  • the embodiment has been described as being applied to a refrigerator, but is not limited thereto.
  • the embodiment is applicable to various products for cooling foods at a plurality of temperatures, such as a freezing container and a freezing truck. It is also applicable to other products having a refrigeration cycle, such as an air conditioner.

Abstract

L'invention concerne un réfrigérateur comprenant un compresseur conçu pour mettre en circulation un fluide frigorigène, un condenseur conçu pour condenser le fluide frigorigène mis en circulation par le compresseur, un élément de refroidissement conçu pour refroidir un compartiment de stockage à l'aide du fluide frigorigène condensé par le condenseur, et un processeur conçu pour commander l'entraînement de l'élément de refroidissement, pour obtenir une variation de charge du compartiment de stockage du réfrigérateur, la variation de charge comprenant un cycle de réfrigération, pour identifier une valeur d'entraînement permettant d'entraîner un élément formant le cycle de réfrigération en fonction de la variation de charge, pour commander l'élément de refroidissement en fonction de la valeur d'entraînement, et pour obtenir la variation de charge à un certain délai pendant au moins une période de refroidissement durant laquelle le cycle de réfrigération refroidit le compartiment de stockage.
EP19855235.8A 2018-08-27 2019-08-27 Réfrigérateur et son procédé de commande Pending EP3818316A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018158718 2018-08-27
JP2018214086A JP2020034266A (ja) 2018-08-27 2018-11-14 冷凍サイクル制御装置、冷凍サイクル装置、冷蔵庫及び冷凍サイクル装置の制御方法
KR1020190074147A KR20200024075A (ko) 2018-08-27 2019-06-21 냉장고 및 그 제어방법
PCT/KR2019/010942 WO2020045958A1 (fr) 2018-08-27 2019-08-27 Réfrigérateur et son procédé de commande

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CN113865257B (zh) * 2021-10-11 2023-01-20 珠海格力电器股份有限公司 冰箱控制方法、装置、系统及冰箱
CN114264103B (zh) * 2021-12-30 2023-03-21 珠海格力电器股份有限公司 一种冰箱及其控制方法

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JP2912860B2 (ja) * 1995-10-16 1999-06-28 松下冷機株式会社 冷蔵庫
NZ314264A (en) * 1997-02-18 1999-06-29 Fisher & Paykel Ltd Substitute Refrigeration apparatus comprising at least two compartments wherein the temperature of each compartment is independently controlled and temperatures are achieved simultaneously
US6612365B1 (en) * 1999-09-17 2003-09-02 Matsushita Electric Industrial Co., Ltd. Heating-element accommodating-box cooling apparatus and method of controlling the same
JP2004251501A (ja) * 2003-02-19 2004-09-09 Toshiba Corp 冷蔵庫およびその制御方法
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JP2007205611A (ja) * 2006-01-31 2007-08-16 Fuji Electric Retail Systems Co Ltd 制御装置
CN100567850C (zh) * 2006-05-23 2009-12-09 东元电机股份有限公司 满液式冰水机
JP5234435B2 (ja) * 2009-07-02 2013-07-10 株式会社日立プラントテクノロジー フリークーリング用の冷熱源装置並びに冷却システム及び冷却方法
KR20110051369A (ko) * 2009-11-10 2011-05-18 엘지전자 주식회사 냉장고 및 냉장고의 제어방법
KR101705528B1 (ko) * 2010-07-29 2017-02-22 엘지전자 주식회사 냉장고 및 냉장고 제어 방법
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CN112639382A (zh) 2021-04-09
KR20200024075A (ko) 2020-03-06

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