EP2469203A2 - Réfrigérateur et son procédé de commande - Google Patents

Réfrigérateur et son procédé de commande Download PDF

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Publication number
EP2469203A2
EP2469203A2 EP11192735A EP11192735A EP2469203A2 EP 2469203 A2 EP2469203 A2 EP 2469203A2 EP 11192735 A EP11192735 A EP 11192735A EP 11192735 A EP11192735 A EP 11192735A EP 2469203 A2 EP2469203 A2 EP 2469203A2
Authority
EP
European Patent Office
Prior art keywords
storage chamber
air
opening
fan
sucked
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.)
Withdrawn
Application number
EP11192735A
Other languages
German (de)
English (en)
Other versions
EP2469203A3 (fr
Inventor
Jeong Su Han
Kee Hwan Ka
Hyo Sang Lee
Jin Ha Jeong
Jun hoe Choi
Ji Hoon Ha
Tae Gyoon Noh
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
Publication of EP2469203A2 publication Critical patent/EP2469203A2/fr
Publication of EP2469203A3 publication Critical patent/EP2469203A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • F25D17/062—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 in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0684—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans allowing rotation in reverse direction
    • 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
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/005—Combined cooling and heating devices

Definitions

  • Embodiments relate to a refrigerator, the temperature of the inside of which is uniformly controlled, and a control method thereof.
  • a refrigerator is an apparatus which supplies cool air generated through a refrigerating cycle of a refrigerant to food storage chambers, such as a freezing chamber and a refrigerating chamber, so as to store food in a fresh state for a long time.
  • a kimchi refrigerator to ferment and store kimchi using such a refrigerator principle has been developed.
  • Kimchi is fermented food using fermentation of microorganisms as well as salted food having increased preservation using salt, and a rate at which fermentation of kimchi proceeds is varied according to salinity and temperature of kimchi. Ripening and storing temperatures of kimchi stored in a storage chamber are set based on standard kimchi. A salinity value of the standard kimchi is generally in the range of about 2.2%.
  • a salinity value of kimchi deviates from the salinity value range of the standard kimchi according to regions in which kimchi is consumed, seasons and kinds of kimchi and respective family tastes. If the salinity of kimchi is lower than that of the standard kimchi, moisture or juice in kimchi tissue is frozen. That is, when a kimchi container is stored in the storage chamber, local supercooling in which kimchi located close to a discharge hole to discharge cool air is frozen occurs due to a narrow channel space within the storage chamber, and kimchi located close to a suction hole to suck air is more rapidly ripened and preservation of the taste of well-ripened kimchi is difficult. Since roles of the suction hole and the discharge hole to form an air flow are fixed, the air flow in the storage chamber is not uniformly distributed.
  • a refrigerator in which a flow of cool air in a storage chamber is uniformly distributed so as to prevent local supercooling and to uniformly maintain internal temperature of the storage chamber by interchanging roles of suction and discharge holes in various manners under various conditions, and a control method thereof.
  • a refrigerator includes a storage chamber, an evaporator to cool air in the storage chamber, a first opening to suck the air in the storage chamber, a second opening to discharge the air cooled by the evaporator to the inside of the storage chamber, a fan provided with blades, which are driven at a first angle and a second angle, and a control unit to adjust the direction of a flow of the air by driving the fan at the first angle so that the air in the storage chamber is sucked through the first opening and is then discharged to the inside of the storage chamber through the second opening and by driving the fan at the second angle so that the air in the storage chamber is sucked through the second opening and is then discharged to the inside of the storage chamber through the first opening.
  • the first angle and the second angle may be blade angles having reverse delta values.
  • the control unit may drive the fan at the first angle or the second angle so as to periodically change the direction of the air flow.
  • a refrigerator in accordance with another aspect, includes a storage chamber, an evaporator to cool air in the storage chamber, a first opening to suck the air in the storage chamber, a second opening to discharge the air cooled by the evaporator to the inside of the storage chamber, first and second fans to respectively generate flows of the air in opposite directions, and a control unit to adjust the direction of the air flow by driving the first fan so that the air in the storage chamber is sucked through the first opening and is then discharged to the inside of the storage chamber through the second opening and by driving the second fan so that the air in the storage chamber is sucked through the second opening and is then discharged to the inside of the storage chamber through the first opening.
  • the first fan and the second fan may have blade angles having reverse values.
  • the control unit may drive the first and second fans so as to periodically change the direction of the air flow.
  • a refrigerator in accordance with another aspect, includes a storage chamber, an evaporator to cool air in the storage chamber, a pair of first openings to suck the air in the storage chamber, a pair of second openings to discharge the air cooled by the evaporator to the inside of the storage chamber, first and second ducts respectively connecting the pair of first openings and the pair of second openings to form air channels in the storage chamber, first and second dampers installed in the first and second ducts to permit or block the air flow toward one of the first and second ducts, and a control unit to adjust the direction of the air flow by controlling the first and second dampers so that the air flows toward one of the first and second ducts.
  • the first and second dampers may be installed at an intersection between the first and second ducts.
  • the control unit may drive the first and second dampers so as to periodically change the direction of the air flow.
  • the refrigerator may further include a third duct at which the first duct and the second duct meet, and the evaporator and a fan may be installed in the third duct.
  • the pair of first openings and the pair of second openings may be respectively installed at upper and lower portions of the rear surface of the storage chamber.
  • the pair of first openings and the pair of second openings may be respectively installed at both side surfaces of the storage chamber.
  • a control method of a refrigerator which has a storage chamber, a first opening to suck the air in the storage chamber, a second opening to discharge the air to the inside of the storage chamber, and a fan provided with blades, the angle of which is varied, to generate a flow of the air, includes driving the fan at a first angle of the blades so that the air in the storage chamber is sucked through the first opening and is then discharged to the inside of the storage chamber through the second opening, judging whether or not a designated time has elapsed, and driving the fan at a second angle of the blades so that the air in the storage chamber is sucked through the second opening and is then discharged to the inside of the storage chamber through the first opening, upon judging that the designated time has elapsed.
  • the driving of the fan at the first angle of the blades and the driving of the fan at the second angle of the blades may be periodically alternated so as to uniformly distribute the air flow throughout the overall space of the storage chamber.
  • a control method of a refrigerator which has a storage chamber, a first opening to suck the air in the storage chamber, a second opening to discharge the air to the inside of the storage chamber, and first and second fans to respectively generate flows of the air in opposite directions, includes driving the first fan so that the air in the storage chamber is sucked through the first opening and is then discharged to the inside of the storage chamber through the second opening, judging whether or not a designated time has elapsed, and driving the second fan so that the air in the storage chamber is sucked through the second opening and is then discharged to the inside of the storage chamber through the first opening, upon judging that the designated time has elapsed.
  • the driving of the first fan and the driving of the second fan may be periodically alternated so as to uniformly distribute the air flow throughout the overall space of the storage chamber.
  • a control method of a refrigerator which has a storage chamber, a pair of first openings to suck the air in the storage chamber, a pair of second openings to discharge the air to the inside of the storage chamber, first and second ducts respectively connecting the pair of first openings and the pair of second openings to form air channels in the storage chamber, and first and second dampers installed in the first and second ducts to permit or block the air flow toward one of the first and second ducts, includes driving the first and second dampers so that the air flows toward one of the first and second ducts, judging whether or not a designated time has elapsed, and driving the first and second dampers so that the air flows toward the other one of the first and second ducts, upon judging that the designated time has elapsed.
  • the driving of the first and second dampers so that the air flows toward one of the first and second ducts and the driving of the first and second dampers so that the air flows toward the other one of the first and second ducts may be periodically alternated so as to uniformly distribute the air flow throughout the overall space of the storage chamber.
  • FIG. 1 is a perspective view illustrating a configuration of a refrigerator applied to one embodiment.
  • a refrigerator 1 in accordance with this embodiment includes a box-shaped main body 10 forming the external appearance of the refrigerator 1, a plurality of storage chambers 21, 22 and 23 formed in the main body 10 to store food, and doors 31, 32 and 33 connected to the main body 10 to open and close the plurality of storage chambers 21, 22 and 23.
  • the plurality of storage chambers 21, 22 and 23 is vertically divided into a first storage chamber 21, a second storage chamber 22 and a third storage chamber 23 by diaphragms.
  • the first storage chamber 21, the second storage chamber 22 and the third storage chamber 23 respectively form independent storage spaces, and storage temperatures of the storage chambers 21, 22 and 23 are independently controlled according to amounts of cool air supplied to the respective storage chambers 21, 22 and 23.
  • the first storage chamber 21 is divided into plural spaces by plural shelves such that food may be put on the respective shelves.
  • a first opening (hereinafter, referred to as a 'suction hole') 24 and a second opening (hereinafter, referred to as a 'discharge hole') 25 to form an air flow at the inside of the first storage chamber 21 are formed through the rear surface of the first storage chamber 21.
  • the suction hole 24 is provided at the lower portion of the rear surface of the first storage chamber 21 so as to suck air in the first storage chamber 21, and the discharge hole 25 is provided at the upper portion of the rear surface of the first storage chamber 21 so as to discharge cool air to the inside of the first storage chamber 21.
  • a temperature sensor 26 to sense a temperature in the first storage chamber 21 is installed at the lower portion of the rear surface of the first storage chamber 21.
  • the doors 31, 32 and 33 include a rotating door 31 rotatably connected to the main body 10 so as to open and close the first storage chamber 21, and drawer-type doors 32 and 33 slidably connected to the main body 10 so as to open and close the second storage chamber 22 and the third storage chamber 23.
  • FIG. 2 is a cross-sectional view illustrating the first storage chamber of the refrigerator in accordance with the embodiment.
  • an evaporator 27 to cool air of the first storage chamber 21 is installed at the rear portion of the inside of the first storage chamber 21, and a fan 28 to circulate air to the inside of the first storage chamber 21 is installed above the evaporator 27.
  • the fan 28 is a blade fan having a delta angle. Roles of the suction hole 24 and the discharge hole 25 may be interchanged by varying the angle of blades of the fan 28.
  • the suction hole 24 formed at the lower portion of the rear surface of the first storage chamber 21 serves to suck air, as it is, and the discharge hole 25 formed at the upper portion of the rear surface of the first storage chamber 21 serves to discharge cool air, as it is.
  • the discharge hole 25 formed at the upper portion of the rear surface of the first storage chamber 21 serves to suck air and the suction hole 24 formed at the lower portion of the rear surface of the first storage chamber 21 serves to discharge cool air. That is, roles of the suction hole 24 and the discharge hole 25 formed at the lower and upper portions of the rear surface of the first storage chamber 21 are not fixed, but may be interchanged by varying the blade angle of the fan 28.
  • FIG. 3 is a control block diagram of the refrigerator in accordance with the embodiment.
  • the refrigerator includes the temperature sensor 26, an input unit 50, a control unit 52, a fan drive unit 54 and a display unit 58.
  • the input unit 50 serves to input user's control command to the control unit 52, and is provided with plural buttons including a start button to start temperature control of food and a temperature set button to set a temperature at which the food is to be stored.
  • the control unit 52 is a microcomputer to control the overall operation of the refrigerator 1, and controls driving of the fan 28 so that roles of the suction hole 24 and the discharge hole 25 are interchanged in various manners under various conditions.
  • Conditions to interchange the roles of the suction hole 24 and the discharge hole 25 include change of the direction of an air flow by varying the blade angle of the fan 28, as shown in FIG. 2 , change of the direction of an air flow using two fans having reverse blade angles, and change of the direction or an air flow using dampers.
  • the control unit 52 first drives the fan 28 at the first angle.
  • control unit 52 drives the fan 28 at the second angle.
  • control unit 52 alternately drives the fan 28 at different angles, i.e., the first angle and the second angle, every designated time (for example, every 2 hours), air flows in the upward direction and then flows in the downward direction and thus the roles of the suction hole 24 and the discharge hole 25 are periodically interchanged. Thereby, the air flow within the first storage chamber 21 is uniformly distributed and thus the temperature within the first storage chamber 21 is uniformly maintained.
  • the fan drive unit 54 controls driving of the fan 28 according to a control signal from the control unit 52, thereby varying the blade angle of the fan 28.
  • the display unit 58 displays an operating state (for example, a kind, a ripening time or a temperature condition of food stored in the storage chamber) of the refrigerator 1 or various set values according to a control signal from the control unit 52.
  • an operating state for example, a kind, a ripening time or a temperature condition of food stored in the storage chamber
  • FIG. 4 is a flow chart illustrating an algorithm to control an air flow of the refrigerator in accordance with this embodiment
  • FIG. 5 is a cross-sectional view illustrating an upward direction of the air flow of the refrigerator in accordance with this embodiment
  • FIG. 6 is a cross-sectional view illustrating a downward direction of the air flow of the refrigerator in accordance with this embodiment
  • FIGS. 7A and 7B are views illustrating a structure of the fan with a varied blade angle to change the direction of the air flow of the refrigerator in accordance with this embodiment.
  • the user inputs a set temperature through the temperature set button provided on the input unit 50 and then operates the start button, cool air generated by the general refrigerating cycle is supplied to the inside of the first storage chamber 21 and then starts lowering of the internal temperature of the storage chamber 21.
  • control unit 52 drives the fan 28 at the first angle, as shown in FIG. 7A , through the fan drive unit 54 (Operation 100).
  • the fan 28 is driven under the condition that the angle of respective blades 30 is set to the first angle, as shown in FIG. 7A , by connecting inner parts of the respective blades 30 to a motor (not shown) of the fan drive unit 54, specifically a motor rotating shaft 30a provided to convert the angle of the blades 30 separately from a fan rotating motor, and then rotating the motor by a desired degree.
  • a motor not shown
  • a motor rotating shaft 30a provided to convert the angle of the blades 30 separately from a fan rotating motor, and then rotating the motor by a desired degree.
  • the fan drive unit 54 controls driving of the fan 28 according to the control signal from the control unit 52, thereby setting the blade angle of the fan 28 to the first angle, as shown in FIG. 7A .
  • control unit 52 counts time for which the fan 28 is driven at the first angle (Operation 102), and judges whether or not a designated time (for example, 2 hours) has elapsed (Operation 104).
  • control unit 52 drives the fan 28 at the second angle, as shown in FIG. 7B , through the fan drive unit 54 (Operation 106).
  • the fan 28 is driven under the condition that the angle of the respective blades 30 is set to the second angle, as shown in FIG. 7B , by connecting the inner parts of respective blades 30 to the motor rotating shaft 30a of the motor (not shown) of the fan drive unit 54 and then rotating the motor by a desired degree.
  • control unit 52 counts time for which the fan 28 is driven at the second angle (Operation 108), and judges whether or not a designated time has elapsed (Operation 110).
  • FIG. 8 is a cross-sectional view illustrating a first storage chamber of a refrigerator in accordance with another embodiment.
  • Some parts in this embodiment shown in FIG. 8 which are substantially the same as those in the embodiment shown in FIG. 2 , are denoted by the same reference numerals even though they are depicted in different drawings, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • an evaporator 27 to cool air of the first storage chamber 21 is installed at the rear portion of the inside of the first storage chamber 21, and first and second fans 29a and 29b to circulate air to the inside of the first storage chamber 21 are installed above the evaporator 27.
  • the first and second fans 29a and 29b are blade fans having reverse delta angles. Roles of the suction hole 24 and the discharge hole 25 may be interchanged by respectively driving the first and second fans 29a and 29b.
  • the suction hole 24 formed at the lower portion of the rear surface of the first storage chamber 21 serves to suck air in the first storage chamber 21, as it is, and the discharge hole 25 formed at the upper portion of the rear surface of the first storage chamber 21 serves to discharge cool air to the inside of the first storage chamber 21, as it is.
  • the discharge hole 25 formed at the upper portion of the rear surface of the first storage chamber 21 serves to suck air in the first storage chamber 21 and the suction hole 24 formed at the lower portion of the rear surface of the first storage chamber 21 serves to discharge cool air to the inside of the first storage chamber 21.
  • the roles of the suction hole 24 and the discharge hole 25 formed at the lower and upper portions of the rear surface of the first storage chamber 21 are not fixed, but may be interchanged according to whether or not the first and second fans 29a and 29b are driven.
  • FIG. 9 is a control block diagram of the refrigerator in accordance with this embodiment. Some parts in this embodiment shown in FIG. 9 , which are substantially the same as those in the embodiment shown in FIG. 3 , are denoted by the same reference numerals even though they are depicted in different drawings, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • the control unit 52 is a microcomputer to control the overall operation of the refrigerator 1, and controls driving of the first and second fans 29a and 29b so that the roles of the suction hole 24 and the discharge hole 25 are interchanged in various manners under various conditions.
  • a condition to interchange the roles of the suction hole 24 and the discharge hole 25 is change of the direction of an air flow using the first and second fans 29a and 29b having reverse blade angles.
  • control unit 52 drives the first fan 29a.
  • control unit 52 drives the second fan 29b.
  • control unit 52 alternately drives the first and second fans 29a and 29b every designated time (for example, every 2 hours), air flows in the upward direction and then flows in the downward direction and thus the roles of the suction hole 24 and the discharge hole 25 are periodically interchanged. Thereby, the air flow within the first storage chamber 21 is uniformly distributed and thus the temperature within the first storage chamber 21 is uniformly maintained.
  • the fan drive unit 54 controls driving of the first and second fans 29a and 29b according to a control signal from the control unit 52, thereby alternately driving the first and second fans 29a and 29b.
  • FIG. 10 is a flow chart illustrating an algorithm to control an air flow of the refrigerator in accordance with this embodiment
  • FIG. 11 is a cross-sectional view illustrating an upward direction of the air flow of the refrigerator in accordance with this embodiment
  • FIG. 12 is a cross-sectional view illustrating a downward direction of the air flow of the refrigerator in accordance with this embodiment.
  • control unit 52 drives the first fan 29a through the fan drive unit 54 (Operation 200).
  • control unit 52 counts time for which the first fan 29a is driven (Operation 202), and judges whether or not a designated time has elapsed (Operation 204).
  • control unit 52 drives the second fan 29b through the fan drive unit 54 (Operation 206).
  • control unit 52 counts time for which the second fan 29b is driven (Operation 208), and judges whether or not a designated time has elapsed (Operation 210).
  • FIG. 13 is a cross-sectional view illustrating a first storage chamber of a refrigerator in accordance with another embodiment.
  • Some parts in this embodiment shown in FIG. 13 which are substantially the same as those in the embodiment shown in FIG. 2 , are denoted by the same reference numerals even though they are depicted in different drawings, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • two suction holes 24a and 24b and two discharge holes 25a and 25b to induce an air flow in the first storage chamber 21 are formed on the rear surface of the first storage chamber 21.
  • the suction holes 24a and 24b are provided at the upper and lower portions of the rear surface of the first storage chamber 21 so as to suck air in the first storage chamber 21, and the discharge holes 25a and 25b are provided at the upper and lower portions of the rear surface of the first storage chamber 21 so as to discharge cool air to the inside of the first storage chamber 21.
  • first and second ducts 41 and 42 which are extended in the vertical direction to uniformly distribute air throughout the overall space of the first storage chamber 21 are installed at the rear portion of the inside of the first storage chamber 21, and a third duct 43 to change the direction of the air flow is installed at an intersection between the first and second ducts 41 and 42.
  • An evaporator 27 to cool air of the first storage chamber 21 and a fan 28 to circulate the air of the first storage chamber 21 are installed within the third duct 43.
  • First and second dampers 45 and 46 to adjust the direction of the air flow so as to allow air circulated by the fan 28 to move toward the first duct 41 or the second duct 42 are installed at both ends of the third duct 43 connected with the first and second ducts 41 and 42.
  • the first and second dampers 45 and 46 are driven by damper motors (not shown), thereby changing the direction of the air flow and thus interchanging roles of the suction holes 24a and 24b and the discharge holes 25a and 25b.
  • the suction hole 24a formed at the lower portion of the left side of the rear surface of the first storage chamber 21 serves to suck air in the first storage chamber 21 and the discharge hole 25a formed at the upper portion of the right side of the rear surface of the first storage chamber 21 serves to discharge cool air to the inside of the first storage chamber 21. Thereby, air flows in the upward direction.
  • the suction hole 24b formed at the upper portion of the left side of the rear surface of the first storage chamber 21 serves to suck air in the first storage chamber 21 and the discharge hole 25b formed at the lower portion of the right side of the rear surface of the first storage chamber 21 serves to discharge cool air to the inside of the first storage chamber 21. Thereby, air flows in the downward direction.
  • suction holes 24a and 24b and the discharge holes 25a and 15b respectively formed at the upper and lower portions of the rear surface of the first storage chamber 21 are not fixed, but may be interchanged according to whether or not the first and second dampers 45 and 46 are driven.
  • this embodiment illustrates that a pair of suction holes 24a and 24b and a pair of discharge holes 25a and 25b are installed at the upper and lower portions of the rear surface of the first storage chamber 21, the positions of the suction holes 24a and 24 and the discharge holes 25a and 25b are not limited thereto.
  • a pair of suction holes 24a and 24b and a pair of discharge holes 25a and 25b may be installed at both side surfaces of the first storage chamber 21 in the same manner.
  • FIG. 14 is a control block diagram of the refrigerator in accordance with this embodiment. Some parts in this embodiment shown in FIG. 14 , which are substantially the same as those in the embodiment shown in FIG. 3 , are denoted by the same reference numerals even though they are depicted in different drawings, and a detailed description thereof will thus be omitted because it is considered to be unnecessary.
  • the control unit 52 is a microcomputer to control the overall operation of the refrigerator 1, and controls driving of the first and second dampers 45 and 46 so that the roles of the suction holes 24a and 24b and the discharge holes 25a and 25b are interchanged in various manners under various conditions.
  • a condition to interchange the roles of the suction holes 24a and 24b and the discharge holes 25a and 25b is change of the direction of the air flow using the first and second dampers 45 and 46 to open and close the air channels of the first and second ducts 41 and 42.
  • control unit 52 drives the first and second dampers 45 and 46 so that the air channel connected with the first duct 41 is completely closed and the air channel connected with the second duct 42 is completely opened.
  • the control unit 52 drives the first and second dampers 45 and 46 so that the air channel connected with the first duct 41 is completely opened and the air channel connected with the second duct 42 is completely closed.
  • control unit 52 sequentially drives the first and second dampers 45 and 46 every designated time (for example, every 2 hours), air flows in the upward direction and then flows in the downward direction and thus the roles of the suction holes 24a and 24b and the discharge holes 25a and 25b are periodically interchanged. Thereby, the air flow within the first storage chamber 21 is uniformly distributed and thus the temperature within the first storage chamber 21 is uniformly maintained.
  • a damper drive unit 56 controls driving of the first and second dampers 45 and 46 according to a control signal from the control unit 52, thereby changing the direction of the air flow.
  • FIG. 15 is a flow chart illustrating an algorithm to control an air flow of the refrigerator in accordance with this embodiment
  • FIG. 16 is a cross-sectional view illustrating an upward direction of the air flow of the refrigerator in accordance with this embodiment
  • FIG. 17 is a cross-sectional view illustrating a downward direction of the air flow of the refrigerator in accordance with this embodiment.
  • control unit 52 drives the fan 28 through the fan drive unit 54 (Operation 300).
  • control unit 52 drives the first and second dampers 45 and 46 through the damper drive unit 56 so that the air channel connected with the first duct 41 is completely closed and the air channel connected with the second duct 42 is completely opened (Operation 302).
  • control unit 52 counts time for which the first and second dampers 45 and 46 are driven so that the air channel of the second duct 42 is opened (Operation 304), and judges whether or not a designated time has elapsed (Operation 306).
  • control unit 52 drives the first and second dampers 45 and 46 through the damper drive unit 56 so that the air channel connected with the first duct 41 is completely opened and the air channel connected with the second duct 42 is completely closed (Operation 308).
  • control unit 52 counts time for which the first and second dampers 45 and 46 are driven so that the air channel of the first duct 41 is opened (Operation 310), and judges whether or not a designated time has elapsed (Operation 312).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
EP11192735.6A 2010-12-22 2011-12-09 Réfrigérateur et son procédé de commande Withdrawn EP2469203A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100132638A KR20120071054A (ko) 2010-12-22 2010-12-22 냉장고 및 그 제어방법

Publications (2)

Publication Number Publication Date
EP2469203A2 true EP2469203A2 (fr) 2012-06-27
EP2469203A3 EP2469203A3 (fr) 2014-10-15

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EP11192735.6A Withdrawn EP2469203A3 (fr) 2010-12-22 2011-12-09 Réfrigérateur et son procédé de commande

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US (1) US20120159974A1 (fr)
EP (1) EP2469203A3 (fr)
KR (1) KR20120071054A (fr)
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US20120159974A1 (en) 2012-06-28
KR20120071054A (ko) 2012-07-02
EP2469203A3 (fr) 2014-10-15

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