EP2762807A1 - Kühlschrank - Google Patents

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Publication number
EP2762807A1
EP2762807A1 EP20120835627 EP12835627A EP2762807A1 EP 2762807 A1 EP2762807 A1 EP 2762807A1 EP 20120835627 EP20120835627 EP 20120835627 EP 12835627 A EP12835627 A EP 12835627A EP 2762807 A1 EP2762807 A1 EP 2762807A1
Authority
EP
European Patent Office
Prior art keywords
compartment
refrigerator
duct
unit
cold air
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Withdrawn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
EP20120835627
Other languages
English (en)
French (fr)
Other versions
EP2762807A4 (de
Inventor
Shin'ichi Horii
Katsunori Horii
Akira Nakano
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.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2762807A1 publication Critical patent/EP2762807A1/de
Publication of EP2762807A4 publication Critical patent/EP2762807A4/de
Withdrawn legal-status Critical Current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
    • F25D17/065—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 with compartments at different temperatures
    • 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
    • F25D2317/066—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 air supply
    • 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
    • F25D2317/067—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 air ducts
    • F25D2317/0672—Outlet ducts

Definitions

  • the present invention relates to a refrigerator for cooling individual storage compartments of different temperature zones by forcibly circulating cold air produced by a cooling unit.
  • Fig. 9 is a vertically sectioned view of a conventional refrigerator.
  • cabinet 1 is constructed of insulated box housing 5 having insulation material 4 filled between inner box 2 and outer box 3.
  • the refrigerator comprises refrigerator compartment 6, insulated storage compartment 7 and freezer compartment 8 in this order from the upper side.
  • refrigerator compartment door 9 provided on a front face of refrigerator compartment 6, storage compartment door 10 provided on a front face of insulated storage compartment 7, and freezer compartment door 11 on a front face of freezer compartment 8.
  • Refrigerator compartment 6 and insulated storage compartment 7 are separated by partition plate 12 having an insulating property, and insulated storage compartment 7 and freezer compartment 8 are separated by partition plate 13 also having an insulating property.
  • Duct 14 connecting freezer compartment 8 is disposed behind partition plate 13.
  • Refrigerator compartment 6 has refrigerator compartment shelves 6a and refrigerator compartment case 6b disposed therein for storing food. Refrigerator compartment 6 also has tube-on-sheet (evaporator) 15 disposed in contact with a wall surface on the back side of inner box 2, and cooling wall 6c inside refrigerator compartment 6 is cooled by tube-on-sheet 15. Freezer compartment 8 has cooling unit 16 disposed on the back side thereof, and fan 17 located above cooling unit 16.
  • Insulated storage compartment 7 has storage compartment cases 7a disposed therein for storing food. Insulated storage compartment 7 also has duct 18 equipped in it with damper 19, and disposed on the backside thereof.
  • the refrigerator constructed as above operates in a manner which is described hereinafter.
  • tube-on-sheet 15 is in contact with the back surface of inner box 2 so that this surface of inner box 2 serves as cooling wall 6c of refrigerator compartment 6 and cools refrigerator compartment shelves 6a and refrigerator compartment case 6b inside refrigerator compartment 6 by natural cooling.
  • freezer compartment 8 cold air of cooling unit 16 in a cooling chamber is circulated forcibly by fan 17 to cool the interior of freezer compartment 8.
  • the cold air circulated inside freezer compartment 8 returns to cooling unit 16.
  • a part of the cold air of cooling unit 16 driven by fan 17 flows into duct 14, and circulates into duct 18 on the back side of insulated storage compartment 7.
  • the cold air that enters in duct 18 passes damper 19, and is delivered to storage compartment cases 7a through a plurality of discharge openings 20, drawn into a return duct to cooling unit 16 on the back side of insulated storage compartment 7 after exchanging heat with the air inside storage compartment cases 7a, and then returned to cooling unit 16.
  • refrigerator compartment 6 and insulated storage compartment 7 are separated vertically by partition plate 12 without any path formed for the cold air to circulate between refrigerator compartment 6 and insulated storage compartment 7, as discussed above.
  • Refrigerator compartment 6 is cooled by tube-on-sheet 15 to maintain a suitable temperature.
  • Insulated storage compartment 7 is cooled by circulating latent heat of evaporation of cooling unit 16 into insulated storage compartment 7 by fan 17.
  • a refrigerator of the present invention comprises a refrigerator compartment, a freezer compartment, and a partition wall for thermally insulating and separating between the refrigerator compartment and the freezer compartment.
  • the refrigerator also comprises a cooling unit disposed behind the freezer compartment for producing cold air, a cooling chamber disposed above the cooling unit and provided with a fan for forcibly delivering the produced cold air to the refrigerator compartment and the freezer compartment, and a duct unit having a refrigerator-compartment flow duct for delivering the cold air to the refrigerator compartment by the fan and a refrigerator-compartment return duct for returning the cold air discharged into the refrigerator compartment back to the cooling unit.
  • a sectional area of a discharge opening at a compartment side of the discharge portion is formed to be larger than a smallest sectional area in an air passage of the discharge portion. Since this structure achieves uniformity of the temperature within the refrigerator compartment while preventing condensation, it can ensure uniformity in temperatures of individual storage compartments as well as reliability around the duct unit.
  • Fig. 1 is a vertically sectioned view of a refrigerator according to the first exemplary embodiment of the invention
  • Fig. 2 is a front view of a main body of the refrigerator
  • Fig. 3 is a schematic illustration of a main part of the refrigerator according to the first embodiment
  • Fig. 4 is a perspective view of a refrigerator-compartment duct unit of the refrigerator
  • Fig. 5 is an exploded perspective view of the refrigerator-compartment duct unit of the refrigerator according to the first embodiment
  • Fig. 6 is a perspective view of an interior portion of a refrigerator compartment of the refrigerator
  • Fig. 7 is a sectional view of a discharge opening of the refrigerator-compartment duct unit of the refrigerator.
  • insulated box housing 31 of refrigerator 30 comprises outer box 32 using mainly of a steel sheet, and inner box 33 formed of a resin such as ABS.
  • a space between outer box 32 and inner box 33 is filled with foam insulation material 34 such as rigid urethane foam to thermally insulate from the surroundings.
  • Insulated box housing 31 is separated into a plurality of storage compartments such that refrigerator compartment 35 is disposed to an uppermost section, convertible compartment 36 is disposed under refrigerator compartment 35, and freezer compartment 37 is disposed to a lowermost section.
  • Refrigerator compartment door 38 is pivotally supported at a front opening of refrigerator compartment 35 to make the front opening freely openable
  • convertible compartment door 39 is pivotally supported at a front opening of convertible compartment 36 to make the front opening freely openable
  • freezer compartment door 40 is also pivotally supported at a front opening of freezer compartment 37 to make the front opening freely openable.
  • a temperature of refrigerator compartment 35 is normally set between 1°C and 5°C with a lower limit not to freeze the food for chilled storage, whereas a temperature setting of convertible compartment 36 is selectable from a freezing temperature range to a refrigeration temperature range such that the temperature can be set from -18°C to 4°C in one degree intervals.
  • Freezer compartment 37 is to keep a temperature inside a freezing temperature range so that the temperature is normally set within a range of -22°C to -15°C for frozen storage, although the temperature may be set to a lower temperature of -30°C or -25°C in certain instances for improving the frozen storage condition.
  • Convertible compartment 36 and freezer compartment 37 are vertically separated by first partition wall 41, and refrigerator compartment 35 and convertible compartment 36 are vertically separated by second partition wall 42.
  • cooling chamber 43 There is cooling chamber 43 provided on the back side of freezer compartment 37, and cooling unit 44 is disposed in it. Cooling chamber 43 is thermally insulated and separated from freezer compartment 37 by coil cover 45. Fan 46 is disposed above cooling unit 44 for forcibly supplying the produced cold air, and defrosting heater 47 is disposed below cooling unit 44 for defrosting frost and ice built up on cooling unit 44. Defrosting heater 47 is a glass tube heater made specifically of glass, and a double glass tube heater having the tube formed of two layers of glass is adopted for explosion protection especially when the refrigerant used is a hydrocarbon-group gas.
  • Coil cover 45 is constructed of decorative panel 45a made of a resin, and insulated coil cover 45b made of an insulation material such as polystyrene and forming a retainer portion of fan 46 and a cold-air flow path.
  • Convertible compartment 36 is provided on a back side thereof with duct unit 49 having flow duct 48 for supplying the cold air to refrigerator compartment 35 and convertible compartment 36.
  • Flow duct 48 comprises refrigerator-compartment flow duct 48a that supplies the cold air to refrigerator compartment 35, and convertible-compartment flow duct 48b that supplies the cold air to convertible compartment 36.
  • Refrigerator-compartment flow duct 48a and convertible-compartment flow duct 48b are individually disposed from side to side in a vertical direction within duct unit 49.
  • Damper units 50 are mounted to inside of duct unit 49 for regulating amounts of the cold air delivered to refrigerator compartment 35 and convertible compartment 36.
  • Each of damper units 50 is located in refrigerator-compartment flow duct 48a and convertible-compartment flow duct 48b to control flowing amounts of the cold air independently.
  • the cold air delivered through refrigerator-compartment flow duct 48a and discharged from refrigerator-compartment discharge opening 35a into refrigerator compartment 35 is returned to cooling unit 44 from refrigerator-compartment return opening 35b provided in a lower back face of refrigerator compartment 35 via refrigerator-compartment return duct 51a which is shown in Fig. 6 .
  • the cold air delivered through convertible-compartment flow duct 48b and discharged into convertible compartment 36 from upper discharge opening 36a and lower discharge opening 36b is returned to cooling unit 44 from convertible-compartment return opening 36c provided in a lower part of the duct unit on the back face of convertible compartment 36 via a convertible-compartment return duct (not shown).
  • Refrigerator-compartment return duct 51a is disposed in parallel with flow duct 48 so that the three ducts, refrigerator-compartment flow duct 48a, convertible-compartment flow duct 48b and refrigerator-compartment return duct 51a, are disposed from side to side in the vertical direction inside duct unit 49.
  • the convertible-compartment return duct is disposed next to refrigerator-compartment return duct 51a in their positions of a front-to-back relation such that the convertible-compartment return duct is located on the foreside of refrigerator-compartment return duct 51a.
  • Duct unit 49 is formed into as large a size as about a height and a lateral width of the back surface of convertible compartment 36, and refrigerator-compartment flow duct 48a and convertible-compartment flow duct 48b are disposed to generally the center area in a direction of the lateral width of convertible compartment 36, or the width direction of duct unit 49.
  • Refrigerator-compartment return duct 51a and the convertible-compartment return duct are disposed together at one side of duct unit 49 off the center of refrigerator-compartment flow duct 48a and convertible-compartment flow duct 48b.
  • Cooling chamber 43 includes cold-air return path 71 formed therein, which is provided at one side of cooling unit 44, and partitioned by coil cover 45, partition member 75 and back wall of cooling chamber 43, as shown in Fig. 3 .
  • the cold air returned from refrigerator compartment 35 and convertible compartment 36 is introduced into cold-air return path 71.
  • refrigerator compartment 35 Described next pertains to refrigerator compartment 35.
  • Refrigerator compartment 35 is divided vertically into a plural number of spaces by a plurality of shelves 61, and refrigerator-compartment flow duct 48a constructed on the back surface of refrigerator compartment 35 is formed vertically behind the plurality of shelves 61 with refrigerator-compartment discharge openings 35a opened in positions corresponding to the individual shelves 61.
  • Refrigerator-compartment flow duct 48a may be bifurcated to form branch paths (not shown) that extend to both the right and left sides in the space of refrigerator compartment 35, so that uniformity of temperature distribution across a width direction in the space of refrigerator compartment 35 can be improved by virtue of the branch paths.
  • Refrigerator-compartment duct unit 80 is disposed on the back surface of refrigerator compartment 35, and a flow path of refrigerator compartment 35 is formed by refrigerator-compartment duct unit 80 and inner box 33. Refrigerator-compartment duct unit 80 is connected to second partition wall 42 that vertically separates refrigerator compartment 35 from convertible compartment 36. A temperature range in refrigerator compartment 35 is adjusted by circulating the cold air that is discharged into the refrigerator compartment, flows in refrigerator-compartment duct unit 80 from cooling chamber 43 through duct unit 49 of convertible compartment 36, and the cold air that returns from refrigerator compartment 35.
  • Refrigerator-compartment duct unit 80 is constructed from refrigerator-compartment duct member 81 formed of styrene foam and refrigerator-compartment duct panel 86 made of a resin that covers the front face of refrigerator-compartment duct member 81. Sealing foam member 82 is attached to a sealing portion of refrigerator-compartment duct unit 80.
  • a lower face and a back face of refrigerator-compartment duct member 81 are in contact with partition-wall duct member 87, partition-wall plate member 88 and inner box 33 that form an upper face portion of second partition wall 42.
  • Foam-member sealing portion 84 provided over partition-wall duct member 87, partition-wall plate member 88 and inner box 33 compresses and maintains close contact with sealing foam member 82.
  • This configuration can make up a seal reinforcement structure in a seal connecting portion of refrigerator-compartment duct unit 80, which ensures the sealing connection in both vertical and fore-and-aft directions.
  • refrigerator-compartment duct pressure-seal portion 83a on the back face of refrigerator-compartment duct member 81 makes sealing connection with inner-box pressure-seal portion 83b of inner box 33.
  • Refrigerator-compartment duct pressure-seal portion 83a of refrigerator-compartment duct member 81 is formed into a shape having ridges and recesses. This configuration has side discharge openings 91 discharge the cold air in a manner to surround the entire refrigerator compartment 35 to achieve uniformity of temperature in refrigerator compartment 35.
  • Sealing foam member 82 constitutes a sealing structure in combination with refrigerator-compartment duct pressure-seal portion 83a and foam-member sealing portion 84.
  • Refrigerator-compartment duct pressure-seal portion 83a and foam-member sealing portion 84A are coupled by arranging their sealing portions overlap in parallel to each other instead of them being butted against one another along a single straight line. This structure can improve effectiveness of the sealing, since it ensures a sufficient length of contact at the switchover coupling, and accommodates part-to-part variation and unevenness in the assembling.
  • inner-box pressure-seal portion 83b of inner box 33 is formed to have a surface of different level to emphasize that it is a different surface from the peripheral areas. This structure helps ensure a high precision of flatness of the seal portion easily in the process of die-molding, thereby improving effectiveness of the sealing by virtue of the contact with refrigerator-compartment duct pressure-seal portion 83a.
  • seal reinforcement structure described above is a configuration of refrigerator compartment 35, like seal reinforcement structure may also be used for convertible compartment 36 in the same manner as refrigerator compartment 35.
  • Refrigerator-compartment duct member 81 is provided with side discharge openings 91 to circulate the cold air from side faces into a swirling motion in refrigerator compartment 35, and upper discharge opening 92 to blow and circulate the cold air downward from an upper part.
  • duct-unit discharge portions 90 provided in front of refrigerator-compartment duct panel 86 which covers a front surface of refrigerator-compartment duct member 81.
  • control board 66 for controlling the whole of refrigerator 30 is disposed to outer box 32 at a location corresponding to the back side of convertible compartment 36.
  • a refrigerator-compartment temperature sensor (not shown) is placed inside refrigerator-compartment return opening 35b for detecting a temperature of refrigerator compartment 35
  • a convertible-compartment temperature sensor (not shown) is placed inside convertible-compartment return opening 36c for detecting a temperature of convertible compartment 36.
  • the refrigerator constructed as above operates and functions in a manner which is described hereinafter.
  • a part of the cold air produced by cooling unit 44 in cooling chamber 43 is forcibly circulated forward by fan 46 so that freezer compartment 37 is cooled by the cold air discharged from a discharge opening in coil cover 45.
  • the cold air is then guided to a lower side of cooling unit 44 through a return port opened under coil cover 45, and circulation of fresh cold air is repeated again by fan 46 after having the heat exchanged by cooling unit 44.
  • Freezer compartment 37 is thus cooled to an optimum temperature by being controlled with a freezer compartment sensor (not shown).
  • the cold air discharged upward from fan 46 is also guided from the cold air discharge opening of coil cover 45 to duct unit 49 via a through hole in first partition wall 41.
  • the cold air discharged into refrigerator compartment 35 opens a refrigerator compartment damper (not shown) of damper unit 50 when a compartment temperature monitored by the refrigerator-compartment temperature sensor is higher than a preset temperature.
  • the cold air that passes through refrigerator-compartment flow duct 48a is then discharged from refrigerator-compartment discharge opening 35a of refrigerator compartment 35, and cools the interior of refrigerator compartment 35.
  • the circulated cold air becomes moist air by taking moisture contained in the air and objects stored in refrigerator compartment 35, and the moist air is guided to refrigerator-compartment return opening 35b.
  • the guided air is further brought to cold-air return path 71 composed of coil cover 45 and the back wall of cooling chamber 43, after passing through refrigerator-compartment return duct 51a of duct unit 49.
  • the air that has passed through cold-air return path 71 is led from cold-air return opening 77 to a lower part of cooling unit 44 to have the heat exchanged by cooling unit 44, and fresh cold air is again delivered forcibly by fan 46. It is by virtue of this structure that can control the interior at the preset temperature even though refrigerator compartment 35 is located away from cooling unit 44.
  • Refrigerator compartment 35 is cooled by having the cold air surround the interior of refrigerator compartment 35 from both the side faces and the upper face through side discharge openings 91 and upper discharge opening 92 provided in refrigerator-compartment duct member 81. Since the cold air is additionally discharged toward the front face via duct-unit discharge portions 90 provided in the front face of refrigerator-compartment duct panel 86, which makes it possible to cool an area near refrigerator-compartment duct member 81, thereby achieving uniformity of the temperature inside refrigerator compartment 35.
  • the cold air discharged from the duct-unit discharge portions 90 has a temperature of which a difference is substantial from that in refrigerator compartment 35. This would cause condensation to develop on a surface of refrigerator-compartment duct panel 86 if duct-member discharge opening 90a and duct-panel discharge opening 90b have same bore dimensions, since the discharged cold air also cools an edge surface of duct-panel discharge opening 90b formed of a resin material.
  • the storage-compartment side opening of duct-member discharge opening 90a has a round shape of which edge is rounded.
  • Refrigerator-compartment duct member 81 is formed of a foam insulation material such as styrene foam so that foamed beads can become hardened without fail by having the edge of round shape. Because such shape makes the appearance of the foam insulation material pleasing to the eye as can be seen from the discharge opening, it improves aesthetical quality of the refrigerator compartment. It is desirable that the round shape of the storage-compartment side opening of duct-member discharge opening 90a is formed to have a radius of 3mm or larger to ensure moldability.
  • refrigerator-compartment duct unit 80 of refrigerator compartment 35 like structure may also be used for all storage compartments that are prone to dew condensation on surfaces of their duct units when there are differences between storage compartment temperatures and the temperature of the discharged cold air.
  • Fig. 8 is a sectional view of duct-unit discharge portion 90 and vicinity thereof in a refrigerator compartment according to the second exemplary embodiment of the invention.
  • condensation liable to occur on a surface of refrigerator-compartment duct panel 86 is prevented by satisfying conditions that smallest dimension [A] in cross section of discharge opening ⁇ dimension [B] of storage-compartment side opening, and smallest dimension [A] in cross section of the discharge opening ⁇ opening dimension [C] of discharge opening. It is desirable that the storage-compartment side opening of duct-member discharge opening 90a has a round shape of which an edge is rounded.
  • a resistance of air passage to the cold air that flows into the discharge opening can be reduced by having a configuration of smallest dimension [A] in cross section of the discharge opening ⁇ dimension [D] of flow-path side opening in cross section of the discharge opening.
  • the resistance of air passage can be further reduced by making an edge of the flow-path side opening into a round shape.
  • the refrigerator of the present invention comprises a refrigerator compartment, a freezer compartment, and a partition wall that thermally insulates and separates the refrigerator compartment from the freezer compartment.
  • the refrigerator also comprises a cooling unit disposed behind the freezer compartment for producing cold air, a cooling chamber disposed above the cooling unit and provided with a fan for forcibly delivering the produced cold air to the refrigerator compartment and the freezer compartment, and a duct unit having a refrigerator-compartment flow duct for delivering the cold air to the refrigerator compartment by the fan and a refrigerator-compartment return duct for returning the cold air discharged into the refrigerator compartment back to the cooling unit.
  • a sectional area of a discharge opening at the compartment side of the discharge portion is formed to be larger than a smallest sectional area in an air passage of the discharge portion. Since this structure achieves uniformity of temperature within the refrigerator compartment while preventing condensation, it can ensure uniformity in temperatures of individual storage compartments as well as reliability around the duct unit.
  • the duct unit is provided with a decorative panel formed of a resin material on a front face of the refrigerator-compartment flow duct, the present invention can improve robustness which would be insufficient with the panel insulation material alone.
  • the decorative panel also helps increase flexibility in tone of color and shape, which improves aesthetic design inside the storage compartment that is easily noticeable by potential buyers.
  • the present invention cools the decorative panel from its back face by the cold air discharged from the discharge opening, thereby preventing condensation on the surface of the decorative panel attributable to temperature difference in the storage compartment, and ensuring the quality reliability.
  • the discharge opening of the refrigerator-compartment flow duct has a rounded face formed around the opening at the interior-side of the refrigerator compartment, which can improve preciseness of molding the insulation material, and the present invention can thus reduce asperities on the surfaces that are visible from of the interior-side of the compartment and improve the quality of the duct unit.
  • the present invention can further demonstrate advantages of the discharge opening provided with both reliability in the quality and the integrity.
  • the discharge opening of the refrigerator-compartment flow duct is so configured that a sectional area of the discharge opening at the flow-path side is larger than the smallest sectional area inside the discharge air passage, which can reduce a resistance of the air passage to the cold air that flows into the discharge opening of the refrigerator-compartment flow duct, and the present invention can hence improve the efficiency of circulation of the cold air in the flow path.
  • the refrigerator according to the present invention is applicable to household or commercial refrigerator.

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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)
EP12835627.6A 2011-09-26 2012-09-21 Kühlschrank Withdrawn EP2762807A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011208579A JP5861033B2 (ja) 2011-09-26 2011-09-26 冷蔵庫
PCT/JP2012/005998 WO2013046613A1 (ja) 2011-09-26 2012-09-21 冷蔵庫

Publications (2)

Publication Number Publication Date
EP2762807A1 true EP2762807A1 (de) 2014-08-06
EP2762807A4 EP2762807A4 (de) 2015-05-20

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ID=47994698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12835627.6A Withdrawn EP2762807A4 (de) 2011-09-26 2012-09-21 Kühlschrank

Country Status (4)

Country Link
EP (1) EP2762807A4 (de)
JP (1) JP5861033B2 (de)
CN (1) CN103827607B (de)
WO (1) WO2013046613A1 (de)

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JP6145641B2 (ja) * 2013-06-06 2017-06-14 パナソニックＩｐマネジメント株式会社 冷蔵庫
KR102013589B1 (ko) * 2017-01-17 2019-08-23 엘지전자 주식회사 냉장고
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JP2023061307A (ja) * 2021-10-19 2023-05-01 パナソニックＩｐマネジメント株式会社 冷蔵庫

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EP2339275B1 (de) * 2009-12-24 2017-02-08 Panasonic Corporation Kühlschrank

Also Published As

Publication number Publication date
JP5861033B2 (ja) 2016-02-16
CN103827607A (zh) 2014-05-28
CN103827607B (zh) 2016-02-10
EP2762807A4 (de) 2015-05-20
JP2013068381A (ja) 2013-04-18
WO2013046613A1 (ja) 2013-04-04

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