CN114963673B - Refrigerator and control method thereof - Google Patents

Refrigerator and control method thereof Download PDF

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Publication number
CN114963673B
CN114963673B CN202210475776.3A CN202210475776A CN114963673B CN 114963673 B CN114963673 B CN 114963673B CN 202210475776 A CN202210475776 A CN 202210475776A CN 114963673 B CN114963673 B CN 114963673B
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China
Prior art keywords
air door
compressor
closing
kept
stp1
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CN114963673A (en
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陈俊
黄胜华
汤申杰
王竹
杨志鹏
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Changhong Meiling Co Ltd
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Changhong Meiling Co Ltd
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    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D21/002—Defroster control
    • F25D21/004—Control mechanisms
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • 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
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention discloses a refrigerator and a control method thereof. In the invention: in the non-defrosting state, when the compressor is stopped, whether refrigeration needs exist during freezing is taken as the only condition for judging whether the compressor is started, and in the starting stage of the compressor, the condition that all compartments need to meet the primary refrigeration needs is taken as the stopping condition; the refrigerator is controlled. According to the invention, by optimizing the refrigerator control method, when multiple compartments have refrigeration requirements at the same time, the cooling speed is increased by adopting a priority centralized cooling mode, and meanwhile, the compartments are switched by setting a time threshold, so that the temperature of the compartments is prevented from being uncontrolled; the refrigerating cycle is characterized in that the refrigerating cycle is divided into a plurality of compartments, and the compartments are respectively provided with a refrigerating demand and a refrigerating demand.

Description

Refrigerator and control method thereof
Technical Field
The invention belongs to the technical field of refrigerator control, and particularly relates to a refrigerator and a control method thereof.
Background
The single-evaporator three-temperature-zone air-cooled refrigeration freezing box product is characterized in that an evaporator of the single-evaporator three-temperature-zone air-cooled refrigeration freezing box product is arranged in a freezing chamber, the refrigerating capacity of the evaporator is delivered to each chamber of a refrigerator through a freezing fan and an air duct to be refrigerated, and the refrigerating requirements of the refrigerating chamber and the temperature-changing chamber are adjusted and controlled by an air door. The control method generally comprises the following steps: when the refrigerating chamber has a refrigerating requirement, a compressor and a refrigerating fan are started to refrigerate the refrigerating chamber; when the refrigerating chamber has a refrigerating requirement, the compressor, the freezing fan and the refrigerating air door are opened to refrigerate the refrigerating chamber; when the temperature-changing chamber has a refrigeration demand, the compressor, the freezing fan and the temperature-changing air door are opened to refrigerate the temperature-changing chamber. When refrigeration is not needed in refrigeration, the refrigeration air door is closed; when the temperature change does not require refrigeration, the temperature change air door is closed; and when all the compartments have no refrigerating requirement, the compressor and the refrigerating fan are turned off to stop refrigerating.
In the actual application process, when the three compartments have refrigeration requirements at the same time, a plurality of compartments are refrigerated at the same time, so that the refrigeration quantity is dispersed, the cooling speed of each compartment is slow, and the compressor can meet the refrigeration requirement only by starting up for a long time or even stopping machine refrigeration; in addition, the refrigeration requirements of all the compartments are not synchronous, namely after the refrigeration requirement of a certain compartment meets the requirement of the compressor, other compartments immediately require the compressor to be started again according to the refrigeration requirement, and therefore the situation that the compressor is frequently started and stopped occurs. Therefore, the service life of the compressor is greatly influenced, and the problems of high noise, high energy consumption and the like are also generated.
Disclosure of Invention
The invention aims to provide a refrigerator and a control method thereof, wherein by optimizing the control method of the refrigerator, when multiple compartments simultaneously have refrigeration requirements, the cooling speed is increased by adopting a priority centralized cooling mode, and meanwhile, the compartments are switched by setting a time threshold value, so that the temperature of the compartments is prevented from being uncontrolled; in each refrigeration cycle, the compartments without refrigeration requirements in the current refrigeration cycle are actively subjected to primary supplementary refrigeration, so that the situation that refrigeration of one compartment is just finished, and the other compartment is immediately subjected to refrigeration requirements and is restarted to cause frequent stop of a press is avoided.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator control method, which comprises the following steps:
stp0, parameter definition: defining the continuous operation time of the compressor as tcom run, and the maximum allowed continuous operation time threshold value of the compressor as tcom run _ max; the compressor downtime is tcom off, and the shortest compressor downtime threshold value is tcom off _ min; the continuous opening time of the refrigerating air door is tr damp open, and the allowed maximum continuous opening time threshold value of the refrigerating air door is tr damp open _ max; the continuous opening time of the variable temperature air door is tb damp open, and the allowed maximum continuous opening time threshold of the variable temperature air door is tb damp open _ max;
stp1, powering on a refrigerator, and periodically collecting a refrigerating chamber sensor temperature Tr _ air, a variable temperature chamber sensor temperature Tb _ air, a freezing chamber sensor temperature Tf _ air, a refrigerating chamber starting temperature Tr _ cut in, a refrigerating chamber stopping temperature Tr _ cut out, a variable temperature chamber starting temperature Tb _ cut in, a variable temperature chamber stopping temperature Tb _ cut out, a freezing chamber starting temperature Tf _ cut in, a freezing chamber stopping temperature Tf _ cut out, a compressor stopping time tcom _ off and a compressor continuous running time tcom _ run parameter by a controller;
the controller judges whether the refrigerator meets defrosting conditions, if not, the controller enters Stp2, if so, the controller enters a defrosting program, and after defrosting is finished, the controller returns to Stp1;
stp2, judging whether the compressor is in a stop state, if so, entering Stp3, otherwise, entering Stp5;
stp3, judging whether tcom off is larger than or equal to tcom off _ min, and if yes, entering Stp4; otherwise, the compressor is closed, the freezing fan is closed, the refrigerating air door is closed, and the variable temperature air door is closed;
stp4, judging whether Tb _ air is larger than or equal to Tb _ cut in, and if yes, entering Stp4-1; otherwise, entering Stp4-2;
stp4-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening the compressor, opening the freezing fan, opening the variable temperature air door and closing the cold storage air door, and returning to Stp1; otherwise, closing the compressor, opening the freezing fan, opening the variable temperature air door and closing the cold storage air door, and returning to Stp1;
stp4-2, judging whether Tr _ air is greater than or equal to Tr _ cut in, and if so, entering Stp4-2-1; otherwise, entering Stp4-2-2;
stp4-2-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor, opening the freezing fan, opening the cold storage air door and closing the variable temperature air door, and returning to Stp1; otherwise, closing the compressor, opening the freezing fan, opening the cold storage air door and closing the variable temperature air door, and returning to the Stp1;
stp4-2-2, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor, opening the freezing fan, closing the cold storage air door and the variable temperature air door, and returning to Stp1; otherwise, closing the compressor, closing the freezing fan, closing the refrigerating air door and closing the variable temperature air door, and returning to Stp1;
stp5, judging whether tcom run is larger than or equal to tcom run _ max, if so, closing the compressor, closing the freezing fan, closing the cold storage air door, closing the variable temperature air door and returning to Stp1; otherwise, entering Stp6;
stp6, judging whether the variable temperature air door is in an open state, and if so, entering Stp7; otherwise, entering Stp10;
stp7, judging whether Tb _ air is less than or equal to Tb _ cut out, and if yes, entering Stp8; otherwise, entering Stp9;
stp8, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor on, keeping the freezing fan on, closing the variable temperature air door, opening the cold storage air door, and returning to Stp1; otherwise, entering Stp8-1;
stp8-1, judging whether the starting period of the compressor meets the condition that Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp8-1-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is opened, and the Stp1 is returned;
stp8-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the refrigeration air door is closed, and the Stp1 is returned;
stp9, judging whether tb damp open is more than or equal to tb damp open _ max, and if yes, entering Stp9-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept on, the cold storage air door is kept off, and the Stp1 is returned;
stp9-1, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor on, keeping the freezing fan on, closing the variable temperature air door, opening the cold storage air door, and returning to Stp1; otherwise, the compressor is kept open, the freezing fan is kept open, the variable temperature air door is kept open, and the refrigerating air door is kept closed;
stp10, judging whether the refrigerating air door is in an open state, and if so, entering Stp11; otherwise, entering Stp14;
stp11, judging whether Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp12; otherwise, entering Stp13;
stp12, judging whether Tb _ air is larger than or equal to Tb _ cut in or not, if yes, keeping the compressor on, keeping the freezing fan on, opening the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, entering Stp12-1;
stp12-1, judging whether the starting period of the compressor meets that whether Tb _ air is less than or equal to Tb _ cut out or not, and if yes, entering Stp12-1-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is opened, the cold storage air door is closed, and the Stp1 is returned;
stp12-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is closed, and the Stp1 is returned;
stp13, judging whether tr damp open is more than or equal to tr damp open _ max, and if so, entering Stp13-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept closed, the cold storage air door is kept open, and the Stp1 is returned;
stp13-1, judging whether Tb _ air is greater than or equal to Tb _ cut in, if yes, keeping the compressor on, keeping the freezing fan on, opening the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept closed, the cold storage air door is kept open, and the Stp1 is returned;
stp14, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is closed, and Stp1 is returned.
Preferably, the step Stp1 controller determines whether to enter the defrosting program according to the accumulated running time of the compressor and the time of opening the damper; and when the accumulated running time of the compressor and the door opening time reach the preset maximum defrosting period, the controller judges that a defrosting program is entered.
A refrigerator is provided, which is applied with a refrigerator control method.
The invention has the following beneficial effects:
1. according to the invention, by optimizing the control method of the refrigerator, when multiple compartments have refrigeration requirements at the same time, the cooling speed is increased by adopting a priority centralized cooling mode, and meanwhile, the compartments are switched by setting a time threshold, so that the temperature of the compartments is prevented from being uncontrolled.
2. According to the invention, in each refrigeration cycle, the compartments without refrigeration requirements in the current refrigeration cycle are actively subjected to primary cold supplement, so that the situation that the refrigeration of one compartment is just finished, and the refrigeration of the other compartment is immediately started again with the refrigeration requirements, so that the compressor is frequently stopped is avoided.
3. The invention avoids the problems that under extreme conditions, for example, a large amount of hot food is put into each chamber at one time, the repeated alternate refrigeration requirement exists between the chambers or the refrigeration requirement is met for a long time, the program falls into circulation, and the compressor is not stopped all the time by setting the forced resetting condition.
Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a refrigerator control method according to the present invention.
Fig. 2 is a schematic structural diagram of a refrigerator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the present invention is a control method for a refrigerator, in a non-defrosting state, when a compressor 6 is shut down, whether there is a refrigeration requirement for freezing is used as a unique condition for judging whether the compressor 6 is started, and in a stage of starting the compressor 6, each compartment needs to meet a refrigeration requirement for one time as a shutdown condition.
When only the refrigerating or temperature-changing chamber has refrigerating requirements, the refrigerating fan 4 and the air door corresponding to the chamber are opened, the redundant refrigerating capacity of the refrigerating chamber is utilized to carry out internal circulation, when the redundant refrigerating capacity is released completely, the compressor 6 is opened again when the refrigerating chamber reaches the refrigerating requirement condition, and the refrigerating system carries out refrigerating capacity input to meet the refrigerating requirements of the refrigerator.
When refrigeration and temperature change have refrigeration requirements at the same time, priority and time sequence control strategies are adopted, the requirement of concentrated refrigeration capacity for refrigerating one compartment is met, then the concentrated refrigeration capacity is refrigerated for refrigerating the other compartment, and the temperature is prevented from being out of control due to overlong waiting time of the compartments with low priority by setting the longest refrigeration time of the compartments. In order to avoid that the compressor 6 runs without stopping because the sequential control logic enters the dead cycle under the extreme special condition, the longest continuous running time threshold of the compressor 6 is set to forcibly quit the cycle. If the system uses the variable frequency compressor 6, the control method can adjust the rotating speed of the variable frequency compressor 6 by associating the starting time of the compressor 6, the refrigeration requirements of different chambers and other factors in the starting process of the compressor 6; if the refrigerating fan 4 with adjustable rotating speed is used, the rotating speed of the fan can be adjusted to control according to different requirements.
The method comprises the following steps:
stp0, parameter definition: defining the continuous operation time of the compressor 6 as tcom run, and the maximum allowed continuous operation time threshold value of the compressor 6 as tcom run _ max; the shutdown time of the compressor 6 is tcom off, and the shortest shutdown time threshold value of the compressor 6 is tcom off _ min; the continuous opening time of the refrigerating chamber air door 1-2 is tr damp open, and the allowed maximum continuous opening time threshold value of the refrigerating chamber air door 1-2 is tr damp open _ max; the continuous opening time of the variable temperature chamber air door 3-2 is tb damp open, and the allowed maximum continuous opening time threshold value of the variable temperature chamber air door 3-2 is tb damp open _ max;
stp1, powering on a refrigerator, and periodically collecting a refrigerating chamber sensor temperature Tr _ air, a variable temperature chamber sensor temperature Tb _ air, a freezing chamber sensor temperature Tf _ air, a refrigerating chamber starting temperature Tr _ cut in, a refrigerating chamber stopping temperature Tr _ cut out, a variable temperature chamber starting temperature Tb _ cut in, a variable temperature chamber stopping temperature Tb _ cut out, a freezing chamber starting temperature Tf _ cut in, a freezing chamber stopping temperature Tf _ cut out, a compressor 6 stopping time tcom _ off and a compressor 6 continuous running time tcom _ run parameter by a controller;
the controller judges whether the refrigerator meets defrosting conditions, if not, the controller enters Stp2, if so, the controller enters a defrosting program, and after defrosting is finished, the controller returns to Stp1;
wherein, the controller judges whether to enter a defrosting program according to the accumulated running time of the compressor 6 and the time of opening the damper; when the accumulated running time of the compressor 6 and the time for opening the damper reach the preset longest defrosting period, the controller judges that a defrosting program is started;
stp2, judging whether the compressor 6 is in a stop state, if so, entering Stp3, otherwise, entering Stp5;
stp3, judging whether tcom off is larger than or equal to tcom off _ min, and if yes, entering Stp4; otherwise, closing the compressor 6, closing the freezing fan 4, closing the air door 1-2 of the refrigerating chamber and closing the air door 3-2 of the temperature-changing chamber;
stp4, judging whether Tb _ air is larger than or equal to Tb _ cut in, and if yes, entering Stp4-1; otherwise, entering Stp4-2;
stp4-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor 6, opening the freezing fan 4, opening the air door 3-2 of the temperature-changing chamber and closing the air door 1-2 of the refrigerating chamber, and returning to the Stp1; otherwise, closing the compressor 6, opening the freezing fan 4, opening the air door 3-2 of the temperature-changing chamber and closing the air door 1-2 of the refrigerating chamber, and returning to the Stp1;
stp4-2, judging whether Tr _ air is greater than or equal to Tr _ cut in, and if so, entering Stp4-2-1; otherwise, entering Stp4-2-2;
stp4-2-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening a compressor 6, opening a freezing fan 4, opening a refrigerating chamber air door 1-2 and closing a temperature-changing chamber air door 3-2, and returning to Stp1; otherwise, closing the compressor 6, opening the freezing fan 4, opening the air door 1-2 of the refrigerating chamber and closing the air door 3-2 of the temperature changing chamber, and returning to Stp1;
stp4-2-2, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening a compressor 6, opening a freezing fan 4, closing a refrigerating chamber air door 1-2 and a temperature changing chamber air door 3-2, and returning to Stp1; otherwise, closing the compressor 6, closing the freezing fan 4, closing the air door 1-2 of the refrigerating chamber and the air door 3-2 of the temperature changing chamber, and returning to the Stp1;
stp5, judging whether tcom run is larger than or equal to tcom run _ max, if so, closing the compressor 6, closing the freezing fan 4, closing the air doors 1-2 of the refrigerating chamber and the air doors 3-2 of the temperature changing chamber, and returning to Stp1; otherwise, entering Stp6;
stp6, judging whether the air door 3-2 of the temperature changing chamber is in an open state, and if so, entering Stp7; otherwise, entering Stp10;
stp7, judging whether Tb _ air is less than or equal to Tb _ cut out, and if yes, entering Stp8; otherwise, entering Stp9;
stp8, judging whether Tr _ air is greater than or equal to Tr _ cut in or not, if yes, keeping the compressor 6 on, keeping the freezing fan 4 on, closing the air door 3-2 of the temperature-changing chamber, opening the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, entering Stp8-1;
stp8-1, judging whether the starting period of the compressor 6 meets the condition that Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp8-1-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is opened, and the step is returned to the Stp1;
stp8-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the freezing fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the step is returned to the Stp1;
stp9, judging whether tb damp open is more than or equal to tb damp open _ max, if yes, entering Stp9-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-variable chamber is kept on, the air door 1-2 of the refrigerating chamber is kept off, and the step returns to the Stp1;
stp9-1, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor 6 on, keeping the freezing fan 4 on, closing the air door 3-2 of the temperature-changing chamber, opening the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing room is kept on, and the air door 1-2 of the refrigerating room is kept off;
stp10, judging whether the air door 1-2 of the refrigerating chamber is in an open state, and if so, entering Stp11; otherwise, entering Stp14;
stp11, judging whether Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp12; otherwise, entering Stp13;
stp12, judging whether Tb _ air is larger than or equal to Tb _ cut in, if yes, keeping the compressor 6 on, keeping the freezing fan 4 on, opening the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, entering Stp12-1;
stp12-1, judging whether the starting period of the compressor 6 meets that whether Tb _ air is less than or equal to Tb _ cut out or not, and if yes, entering Stp12-1-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is opened, the air door 1-2 of the refrigerating chamber is closed, and the step is returned to the Stp1;
stp12-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the refrigerating fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the Stp1 is returned;
stp13, judging whether tr damp open is more than or equal to tr damp open _ max, and if so, entering Stp13-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing room is kept off, the air door 1-2 of the refrigerating room is kept on, and the Stp1 is returned;
stp13-1, judging whether Tb _ air is larger than or equal to Tb _ cut in, if yes, keeping a compressor 6 on, keeping a freezing fan 4 on, opening a temperature-changing room air door 3-2, closing a refrigerating chamber air door 1-2, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature changing chamber is kept off, the air door 1-2 of the refrigerating chamber is kept on, and the cooling process returns to the Stp1;
stp14, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the freezing fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the step is returned to the step 1.
The second embodiment:
referring to fig. 1, the present invention is a refrigerator control method, including the following steps:
stp0, parameter definition:
setting the allowed maximum continuous operation time threshold as tcom run _ max, wherein tcom run _ max =6 hours in the embodiment;
setting the shortest downtime threshold value as tcom off _ min, wherein in the embodiment, tcom off _ min =5 minutes;
setting the allowed maximum continuous opening time threshold value of the refrigerating chamber air door 1-2 as tr damp open _ max, wherein tr damp open _ max =30 minutes in the embodiment;
the maximum allowable continuous opening time threshold value of the variable temperature chamber damper 3-2 is set to tb damp open _ max, which is =40 minutes in this embodiment.
Stp1, powering on a refrigerator, periodically collecting a refrigerating compartment sensor temperature Tr _ air, a variable temperature compartment sensor temperature Tb _ air, a freezing compartment sensor temperature Tf _ air, a refrigerating compartment starting temperature Tr _ cut in, a refrigerating compartment stopping temperature Tr _ cut out, a variable temperature compartment starting temperature Tb _ cut in, a variable temperature compartment stopping temperature Tb _ cut out, a freezing compartment starting temperature Tf _ cut in, a freezing compartment stopping temperature Tf _ cut out, a compressor 6 stopping time tcom _ off and a compressor 6 continuous running time tcom _ run parameter by a controller;
the controller judges whether the refrigerator meets defrosting conditions, if not, the controller enters Stp2, if so, the controller enters a defrosting program, and after defrosting is finished, the controller returns to Stp1;
stp2, judging whether the compressor 6 is in a stop state, if so, entering Stp3, otherwise, entering Stp5;
stp3, judging whether tcom off is larger than or equal to tcom off _ min, and if yes, entering Stp4; otherwise, closing the compressor 6, closing the freezing fan 4, closing the air door 1-2 of the refrigerating chamber and closing the air door 3-2 of the temperature-changing chamber;
stp4, judging whether Tb _ air is larger than or equal to Tb _ cut in, and if yes, entering Stp4-1; otherwise, entering Stp4-2;
stp4-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor 6, opening the freezing fan 4, opening the air door 3-2 of the temperature-changing chamber and closing the air door 1-2 of the refrigerating chamber, and returning to the Stp1; otherwise, closing the compressor 6, opening the freezing fan 4, opening the air door 3-2 of the temperature-changing chamber and closing the air door 1-2 of the refrigerating chamber, and returning to the Stp1;
stp4-2, judging whether Tr _ air is greater than or equal to Tr _ cut in, and if so, entering Stp4-2-1; otherwise, entering Stp4-2-2;
stp4-2-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening a compressor 6, opening a freezing fan 4, opening a refrigerating chamber air door 1-2 and closing a temperature-changing chamber air door 3-2, and returning to Stp1; otherwise, closing the compressor 6, opening the freezing fan 4, opening the air door 1-2 of the refrigerating chamber and closing the air door 3-2 of the temperature changing chamber, and returning to the Stp1;
stp4-2-2, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening a compressor 6, opening a freezing fan 4, closing a refrigerating chamber air door 1-2 and a temperature changing chamber air door 3-2, and returning to Stp1; otherwise, closing the compressor 6, closing the freezing fan 4, closing the air door 1-2 of the refrigerating chamber and the air door 3-2 of the temperature changing chamber, and returning to the Stp1;
stp5, judging whether tcom run is larger than or equal to tcom run _ max, if so, closing the compressor 6, closing the freezing fan 4, closing the air door 1-2 of the refrigerating chamber and the air door 3-2 of the temperature-changing chamber, and returning to Stp1; otherwise, entering Stp6;
stp6, judging whether the air door 3-2 of the temperature changing chamber is in an open state, and if so, entering Stp7; otherwise, entering Stp10;
stp7, judging whether Tb _ air is less than or equal to Tb _ cut out, and if yes, entering Stp8; otherwise, entering Stp9;
stp8, judging whether Tr _ air is greater than or equal to Tr _ cut in or not, if yes, keeping the compressor 6 on, keeping the freezing fan 4 on, closing the air door 3-2 of the temperature-changing chamber, opening the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, entering Stp8-1;
stp8-1, judging whether the starting period of the compressor 6 meets the condition that Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp8-1-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is opened, and the step is returned to the Stp1;
stp8-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the freezing fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the Stp1 is returned;
stp9, judging whether tb damp open is more than or equal to tb damp open _ max, if yes, entering Stp9-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-variable chamber is kept on, the air door 1-2 of the refrigerating chamber is kept off, and the step returns to the Stp1;
stp9-1, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor 6 on, keeping the freezing fan 4 on, closing the air door 3-2 of the temperature-changing chamber, opening the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing room is kept on, and the air door 1-2 of the refrigerating room is kept off;
stp10, judging whether the air door 1-2 of the refrigerating chamber is in an open state, and if so, entering Stp11; otherwise, entering Stp14;
stp11, judging whether Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp12; otherwise, entering Stp13;
stp12, judging whether Tb _ air is larger than or equal to Tb _ cut in, if yes, keeping the compressor 6 on, keeping the freezing fan 4 on, opening the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, entering Stp12-1;
stp12-1, judging whether the starting period of the compressor 6 meets that whether Tb _ air is less than or equal to Tb _ cut out or not, and if yes, entering Stp12-1-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is opened, the air door 1-2 of the refrigerating chamber is closed, and the Stp1 is returned;
stp12-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the freezing fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the step is returned to the Stp1;
stp13, judging whether tr damp open is more than or equal to tr damp open _ max, and if so, entering Stp13-1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature-changing room is kept off, the air door 1-2 of the refrigerating room is kept on, and the Stp1 is returned;
stp13-1, judging whether Tb _ air is larger than or equal to Tb _ cut in, if yes, keeping the compressor 6 on, keeping the freezing fan 4 on, opening the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature changing chamber is kept off, the air door 1-2 of the refrigerating chamber is kept on, and the cooling process returns to the Stp1;
stp14, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor 6, closing the freezing fan 4, closing the air door 3-2 of the temperature-changing chamber, closing the air door 1-2 of the refrigerating chamber, and returning to Stp1; otherwise, the compressor 6 is kept on, the freezing fan 4 is kept on, the air door 3-2 of the temperature changing chamber is closed, the air door 1-2 of the refrigerating chamber is closed, and the step 1 is returned.
Example three:
in this embodiment, as shown in fig. 2, a refrigerator to which the refrigerator control method provided by the present application is applied; comprises a refrigerating chamber 1, a freezing chamber 2, a temperature changing chamber 3, a freezing fan 4, an evaporator 5 and a compressor 6;
a refrigerating chamber air temperature sensor 1-1 and a refrigerating chamber air door 1-2 are arranged in the refrigerating chamber 1; a freezing chamber air temperature sensor 2-1 is arranged in the freezing chamber 2; the freezing fan 4 and the evaporator 5 are arranged in the freezing chamber 2;
a temperature-changing chamber air temperature sensor 3-1 and a temperature-changing chamber air door 3-2 are arranged in the temperature-changing chamber 3;
the air door 1-2 of the refrigerating chamber and the air door 3-2 of the temperature changing chamber are both electric air doors;
the refrigerating chamber air temperature sensor 1-1, the freezing chamber air temperature sensor 2-1 and the temperature-changing chamber air temperature sensor 3-1 transmit data to the controller; the controller respectively controls the opening and closing operations of the refrigerating chamber air door 1-2, the temperature changing chamber air door 3-2, the freezing fan 4, the evaporator 5 and the compressor 6.
The compressor 6 can adopt a variable frequency compressor, and the running rotating speed of the variable frequency compressor can be adjusted according to different conditions;
the refrigerating fan 4 can adopt a variable rotating speed fan, and the running rotating speed of the variable rotating speed fan is adjusted according to different conditions;
the volume proportion of the refrigerating chamber 1 and the temperature-changing chamber 3, and the priority of the temperature-changing chamber and the refrigerating refrigeration can be exchanged; it is also possible to switch the priority of the temperature-varying chamber and the priority of the refrigeration and cooling according to different temperature setting ranges of the temperature-varying chamber 3.
It should be noted that, in the foregoing system embodiment, each unit included is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
In addition, it can be understood by those skilled in the art that all or part of the steps in the method for implementing the embodiments described above can be implemented by instructing the relevant hardware through a program, and the corresponding program can be stored in a computer-readable storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (3)

1. A refrigerator control method is characterized by comprising the following steps:
stp0, parameter definition: defining the continuous operation time of the compressor as tcom run, and the maximum allowed continuous operation time threshold value of the compressor as tcom run _ max; the compressor downtime is tcom off, and the shortest downtime threshold value of the compressor is tcom off _ min; the continuous opening time of the refrigerating air door is tr damp open, and the allowed maximum continuous opening time threshold value of the refrigerating air door is tr damp open _ max; the continuous opening time of the variable temperature air door is tb damp open, and the allowed maximum continuous opening time threshold of the variable temperature air door is tb damp open _ max;
stp1, powering on a refrigerator, and periodically collecting a refrigerating chamber sensor temperature Tr _ air, a variable temperature chamber sensor temperature Tb _ air, a freezing chamber sensor temperature Tf _ air, a refrigerating chamber starting temperature Tr _ cut in, a refrigerating chamber stopping temperature Tr _ cut out, a variable temperature chamber starting temperature Tb _ cut in, a variable temperature chamber stopping temperature Tb _ cut out, a freezing chamber starting temperature Tf _ cut in, a freezing chamber stopping temperature Tf _ cut out, a compressor stopping time tcom _ off and a compressor continuous running time tcom _ run parameter by a controller;
the controller judges whether the refrigerator meets defrosting conditions, if not, the controller enters Stp2, if so, the controller enters a defrosting program, and after defrosting is finished, the controller returns to Stp1;
stp2, judging whether the compressor is in a stop state, if so, entering Stp3, otherwise, entering Stp5;
stp3, judging whether tcom off is larger than or equal to tcom off _ min, and if yes, entering Stp4; otherwise, the compressor is closed, the freezing fan is closed, the refrigerating air door is closed, and the variable temperature air door is closed;
stp4, judging whether Tb _ air is larger than or equal to Tb _ cut in, and if yes, entering Stp4-1; otherwise, entering Stp4-2;
stp4-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if yes, opening the compressor, opening the freezing fan, opening the variable temperature air door and closing the cold storage air door, and returning to Stp1; otherwise, closing the compressor, opening the freezing fan, opening the variable temperature air door and closing the refrigeration air door, and returning to the Stp1;
stp4-2, judging whether Tr _ air is greater than or equal to Tr _ cut in, and if so, entering Stp4-2-1; otherwise, entering Stp4-2-2;
stp4-2-1, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor, opening the freezing fan, opening the cold storage air door and closing the variable temperature air door, and returning to Stp1; otherwise, closing the compressor, opening the freezing fan, opening the cold storage air door and closing the variable temperature air door, and returning to the Stp1;
stp4-2-2, judging whether Tf _ air is larger than or equal to Tf _ cut in, if so, opening the compressor, opening the freezing fan, closing the cold storage air door and the variable temperature air door, and returning to Stp1; otherwise, closing the compressor, closing the freezing fan, closing the cold storage air door and closing the variable temperature air door, and returning to the Stp1;
stp5, judging whether tcom run is larger than or equal to tcom run _ max, if so, closing the compressor, closing the freezing fan, closing the cold storage air door, closing the variable temperature air door and returning to Stp1; otherwise, entering Stp6;
stp6, judging whether the variable temperature air door is in an open state, and if so, entering Stp7; otherwise, entering Stp10;
stp7, judging whether Tb _ air is less than or equal to Tb _ cut out, and if yes, entering Stp8; otherwise, entering Stp9;
stp8, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor on, keeping the freezing fan on, closing the variable temperature air door, opening the cold storage air door, and returning to Stp1; otherwise, entering Stp8-1;
stp8-1, judging whether the starting period of the compressor at the time meets Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp8-1-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is opened, and the Stp1 is returned;
stp8-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is closed, and the Stp1 is returned;
stp9, judging whether tb damp open is more than or equal to tb damp open _ max, and if yes, entering Stp9-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept on, the cold storage air door is kept off, and the Stp1 is returned;
stp9-1, judging whether Tr _ air is greater than or equal to Tr _ cut in, if so, keeping the compressor on, keeping the freezing fan on, closing the variable temperature air door, opening the cold storage air door, and returning to Stp1; otherwise, the compressor is kept open, the freezing fan is kept open, the variable temperature air door is kept open, and the refrigerating air door is kept closed;
stp10, judging whether the refrigerating air door is in an open state, and if so, entering Stp11; otherwise, entering Stp14;
stp11, judging whether Tr _ air is less than or equal to Tr _ cut out, and if yes, entering Stp12; otherwise, entering Stp13;
stp12, judging whether Tb _ air is larger than or equal to Tb _ cut in or not, if yes, keeping the compressor on, keeping the freezing fan on, opening the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, entering Stp12-1;
stp12-1, judging whether the starting period of the compressor at the time meets the condition that Tb _ air is less than or equal to Tb _ cut out, and if yes, entering Stp12-1-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is opened, the cold storage air door is closed, and the Stp1 is returned;
stp12-1-1, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is closed, and the Stp1 is returned;
stp13, judging whether tr damp open is more than or equal to tr damp open _ max, and if so, entering Stp13-1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept closed, the cold storage air door is kept open, and the Stp1 is returned;
stp13-1, judging whether Tb _ air is greater than or equal to Tb _ cut in, if yes, keeping the compressor on, keeping the freezing fan on, opening the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is kept closed, the cold storage air door is kept open, and the Stp1 is returned;
stp14, judging whether Tf _ air is less than or equal to Tf _ cut out, if yes, closing the compressor, closing the freezing fan, closing the variable temperature air door, closing the cold storage air door, and returning to Stp1; otherwise, the compressor is kept on, the freezing fan is kept on, the variable temperature air door is closed, the cold storage air door is closed, and the Stp1 is returned.
2. The control method of a refrigerator according to claim 1, wherein the controller of step Stp1 determines whether to enter the defrosting process according to the accumulated running time of the compressor and the door opening time; and when the accumulated running time of the compressor and the door opening time reach the preset maximum defrosting period, the controller judges that a defrosting program is entered.
3. A refrigerator characterized in that the refrigerator is applied with a refrigerator control method as claimed in any one of claims 1-2.
CN202210475776.3A 2022-04-29 2022-04-29 Refrigerator and control method thereof Active CN114963673B (en)

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CN111238155A (en) * 2020-02-14 2020-06-05 澳柯玛股份有限公司 Control and refrigeration method of three-temperature-zone dual-system refrigerator
CN113028729A (en) * 2021-03-30 2021-06-25 长虹美菱股份有限公司 Refrigeration control method for refrigerator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1740721A (en) * 2005-09-13 2006-03-01 海信集团有限公司 Variable frequency refrigerator and control method thereof
KR20080089779A (en) * 2007-04-02 2008-10-08 주식회사 대우일렉트로닉스 Refrigerator with multiple cooling system and control method thereof
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