WO2011058678A1 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
WO2011058678A1
WO2011058678A1 PCT/JP2010/004013 JP2010004013W WO2011058678A1 WO 2011058678 A1 WO2011058678 A1 WO 2011058678A1 JP 2010004013 W JP2010004013 W JP 2010004013W WO 2011058678 A1 WO2011058678 A1 WO 2011058678A1
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WO
WIPO (PCT)
Prior art keywords
door
refrigerator
heat insulating
reinforcing plate
vacuum heat
Prior art date
Application number
PCT/JP2010/004013
Other languages
French (fr)
Japanese (ja)
Inventor
塚本健一
Original Assignee
株式会社 東芝
東芝コンシューマエレクトロニクス・ホールディングス株式会社
東芝ホームアプライアンス株式会社
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 株式会社 東芝, 東芝コンシューマエレクトロニクス・ホールディングス株式会社, 東芝ホームアプライアンス株式会社 filed Critical 株式会社 東芝
Priority to RU2012124035/13A priority Critical patent/RU2497054C1/en
Priority to CN201080050986.3A priority patent/CN102725602B/en
Publication of WO2011058678A1 publication Critical patent/WO2011058678A1/en

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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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • F25D2201/124—Insulation with respect to heat using an insulating packing material of fibrous type
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • F25D2201/126—Insulation with respect to heat using an insulating packing material of cellular type
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • F25D2201/128—Insulation with respect to heat using an insulating packing material of foil type
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/14—Insulation with respect to heat using subatmospheric pressure

Definitions

  • the present invention relates to a refrigerator using a vacuum heat insulating panel as a door heat insulating material.
  • the refrigerator is composed of a refrigerator body with a foam insulation between the outer box and the inner box, and a storage room is formed inside the refrigerator body, but it improves heat insulation performance and reduces power consumption.
  • a vacuum heat insulation panel is provided instead of a part of the foam insulation filled between the outer box and the inner box. ing.
  • a heat insulating part in which a foam heat insulating material is disposed between the door surface material arranged outside the door and the door inner plate arranged inside the door In addition, as with the refrigerator main body, in order to improve the heat insulation performance, it is proposed that a vacuum heat insulation panel is provided instead of a part of the foam heat insulating material provided in the heat insulation portion (for example, see JP-A-2004-125394).
  • the refrigerator described in the following cited document 1 forms a protrusion 143 formed on the inner side of the door 127 of the door 127 and a stepped surface in the depth direction.
  • a vacuum heat insulation panel 138 is attached to the front surface portion 144 so as to cover the protrusion portion 143, and the rigid urethane foam 113 is injected and foamed.
  • 143 is filled with a hard urethane foam 113.
  • the vacuum heat insulation panel 138 is not in direct contact with the door face material 150 disposed outside the door 127, which is caused by the difference in thermal contraction rate between the vacuum heat insulation panel 138 and the rigid urethane foam 113. Deformation of the appearance that occurs can be suppressed.
  • the vacuum heat insulation panel 138 is affixed to the step surface in the depth direction and is fixed to the door inner plate 142 in a cantilever state, the vacuum heat insulation panel 138 is peeled off from the door inner plate 142 during manufacturing, and manufacturing defects are likely to occur. There is a problem.
  • the foaming pressure of the hard urethane foam 113 peels the vacuum heat insulating panel 138 from the door inner plate 142.
  • the vacuum heat insulation panel 138 is easily peeled off from the door inner plate 142 when foaming and filling the rigid urethane foam 113, and manufacturing defects are likely to occur.
  • the present invention has been made in consideration of the above problems, and in a refrigerator having a door provided with a vacuum heat insulating panel in a heat insulating portion formed between a door face material and a door inner plate, the manufacture of the door It is an object of the present invention to provide a refrigerator in which manufacturing defects are unlikely to occur without the vacuum insulation panel sometimes peeling off.
  • the refrigerator according to the present invention includes a refrigerator main body that is open to the front and has a storage chamber formed therein, and a door that closes the front opening of the refrigerator main body.
  • a reinforcing plate in contact with the door face material is disposed between the door face material and the vacuum heat insulating panel.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. It is a principal part expanded sectional view of FIG. It is a principal part expanded sectional view of the freezer compartment door which shows the 1st modification of this invention. It is a principal part expanded sectional view of the freezer compartment door which shows the 2nd modification of this invention. It is sectional drawing of the freezer compartment door which shows the 3rd modification of this invention. It is sectional drawing of the freezer compartment door which shows a prior art example.
  • the refrigerator 10 of this embodiment comprises the refrigerator main body 11 which provides a heat insulation space between the outer box 12 which consists of a steel plate, and the inner box 13 which forms a storage space, and makes the outline of the refrigerator 10, as shown in FIG. is doing.
  • a vacuum heat insulation panel 16 is affixed to the inner side of the outer box 12, and a foamed heat insulating material 17 made of polyurethane foam is injected into the gap between the outer box 12 and the inner box 13 to fill with foam.
  • the outer box 12 and the inner box 13 are integrated with the vacuum heat insulation panel 16 disposed inside the outer box 12.
  • the storage space formed inside the inner box 13 is partitioned by the heat insulating partition wall 15 into an upper refrigerated space and a lower refrigerated space.
  • the refrigerated space is further partitioned vertically by a partition wall 21, a refrigerated chamber 22 having a plurality of stages of mounting shelves is provided in the upper space, and a vegetable chamber 24 in which a drawer-type storage container 25 a is disposed in the lower space. It has been.
  • an ice making room 32 equipped with an automatic ice maker and small freezing rooms 34 are provided on the left and right, and a freezing room 36 is provided below the freezing room.
  • the front opening of the refrigerator compartment 22 is closed by a pair of left and right refrigerator compartment doors 23 and 23 pivotally supported by hinges 23 a and 23 a provided on the left and right sides of the refrigerator body 11.
  • the front openings of the vegetable compartment 24, the ice making compartment 32, the small freezer compartment 34, and the freezer compartment 36 are closed by pull-out doors 25, 33, 35, and 37.
  • the storage containers 25a, 33a, and 37a are held by a pair of left and right support frames fixed to the back side of each pull-out door 25, 33, 35, and 37, and are configured to be pulled out of the cabinet with the opening operation. Yes.
  • a refrigerating cooler 41, a freezing cooler 42, and fans 43, 44 corresponding to the coolers 41, 42 are arranged, respectively.
  • the refrigerating cooler 41 and the refrigerating cooler 42 are cooled by alternately introducing refrigerant from the discharge side of the compressor 45 provided at the lower portion of the refrigerator body 11 by a refrigerating cycle (not shown).
  • the cold air generated by the refrigeration cooler 41 and the refrigeration cooler 42 is introduced into the respective storage chambers via the ducts by the fans 43 and 44, and each storage chamber is cooled to a predetermined temperature.
  • the door 37 of the freezer compartment 36 includes, as shown in FIGS. 3 to 5, a door face material 52 arranged on the outside of the cabinet, a door inner plate 54 arranged on the inside of the cabinet, and a door.
  • Upper and lower caps 56, 58 that connect the upper and lower ends of the face material 52 and the door inner plate 54, and a heat insulating portion 60 sandwiched between the door face material 52 and the door inner plate 54.
  • the door face material 52 is made of a steel plate in which both side edges are bent in a U-shape on the freezer compartment side to form a side wall 53, and the side wall 53 is folded back in a U-shape.
  • a door inner plate 54 is fixed at the distal end portion 53a.
  • the door face material 52 is provided with a convex portion 55 that protrudes toward the door inner plate 54 so that the thickness of the freezer compartment door 37 is thin at the center in the width direction.
  • This convex part 55 is provided along the up-down direction of the refrigerator 10 (refer FIG. 2).
  • the door inner plate 54 is formed of a synthetic resin material in a plate shape, and a gasket holding portion 54a for holding a gasket (not shown) that seals a gap between the freezer compartment door 37 and the inside of the freezer compartment 36 is a peripheral portion. Is formed. Both side edges of the door inner plate 54 are fixed to the side wall tip portion 53a of the door face member 52 as described above, whereby the heat insulating portion opened up and down between the door face member 52 and the door inner plate 54. 60 is formed.
  • the upper cap 56 is made of synthetic resin, and closes the upper surface opening of the heat insulating portion 60 to constitute the upper surface of the freezer compartment door 37.
  • the lower cap 58 is made of a synthetic resin, and configures the lower surface of the freezer compartment door 37 by closing the lower surface opening of the heat insulating portion 60.
  • the heat insulating portion 60 is a space closed by the door face material 52, the door inner plate 54, and the upper and lower caps 56, 58, and includes a reinforcing plate 62, a heat insulating material such as a vacuum heat insulating panel 64, and a foam heat insulating material 66 therein. Is disposed.
  • the reinforcing plate 62 is a plate-like heat insulating material such as polystyrene foam, and is disposed on both sides of the convex portion 55 so as to avoid the convex portion 55 provided on the door surface material 52, and the heat insulating portion of the door surface material 52. It is attached to the 60 side.
  • the thickness T of the reinforcing plate 62 is set to be greater than or equal to the protruding amount L of the convex portion 55, and the door of the reinforcing plate 62 is attached to the door face material 52.
  • the top portion 55a of the convex portion 55 is located at a position deeper than the facing surface 62a with the inner plate 54 or in the same plane as the facing surface 62a.
  • the vacuum heat insulation panel 64 accommodates a core material made of cotton-like glass fiber (glass wool) in a gas barrier container having a thickness of about 70 to 120 ⁇ m made of a laminated film of aluminum foil and a synthetic resin. It is a plate-like member formed by sealing with the inside being evacuated to about 0.03 to 30 Pa, and straddles the opposing surfaces 62a of the pair of reinforcing plates 62 arranged on both sides with the convex portion 55 interposed therebetween. Are attached.
  • the foam heat insulating material 66 is formed by foaming and filling a polyurethane foam stock solution into the heat insulating portion 60, and the door surface material 52 and the door inner plate are sandwiched between the door surface material 52 and the vacuum heat insulating panel 64. 54 and upper and lower caps 56 and 58 are integrated. Thereby, the heat insulation door which heat-insulates and obstructs the front opening part of freezer compartment 36 is formed.
  • the reinforcing plate 62 is interposed between the vacuum heat insulating panel 64 and the door surface material 52, and the vacuum heat insulating panel 64 does not directly contact the door surface material 52.
  • the deformation of the appearance caused by the difference in heat shrinkage between the vacuum heat insulating panel 64 and the foam heat insulating material 66 can be suppressed, and the reinforcing plate 62 is directly attached to the door surface material 52, so that the door surface.
  • the rigidity of the material 52 can be increased, and the appearance of the freezer compartment door 37 is further hardly deformed.
  • the vacuum heat insulation panel 64 is attached to the door face member 52 with the reinforcing plate 62 interposed therebetween, and a space for foaming and filling the polyurethane foam stock solution is formed between the vacuum heat insulation panel 64 and the door inner plate 54. .
  • the foaming pressure of the polyurethane foam acts in a direction in which the vacuum heat insulating panel 64 is pressed against the reinforcing plate 62, so that manufacturing defects due to the displacement of the vacuum heat insulating panel 64 are unlikely to occur.
  • the reinforcing plate 62 is made of a heat insulating material such as polystyrene foam, and a heat insulating material is provided between the gas barrier container including the aluminum foil of the vacuum heat insulating panel 64 and the door face material 52 made of steel plate. Since it can be made to intervene, it can block that the heat outside the warehouse leaks into the warehouse through the gas barrier container.
  • a heat insulating material such as polystyrene foam
  • the reinforcement board 62 is arrange
  • the thickness T of the reinforcing plate 62 to be equal to or greater than the protrusion amount L of the convex portion 55 of the door face material 52, the vacuum heat insulating panel 64 always comes into surface contact with the reinforcing plate 62, so Damage to the vacuum heat insulating panel 64 due to contact can be prevented.
  • the reinforcing plate 62 is disposed so as to avoid the convex portion 55 provided on the door surface material 52, but, for example, the convex portion of the door surface material 52 is provided on the reinforcing plate 62 as shown in FIG. A recess 62 c into which 55 is fitted may be formed, and the reinforcing plate 62 including the protrusion 55 may be attached to the door face material 52.
  • the above-described embodiment has been described with respect to the case where the convex portion 55 protruding toward the door inner plate 54 is formed on the door face material 52, for example, as shown in FIG.
  • the recessed part 57 and the convex part 55 which are depressed and protruded in the thickness direction are formed in the door face material 52, as shown in FIG. 8, the freezing room door 37 extends in the widthwise center part of the freezing room door 37 in the vertical direction.
  • the door surface material 52 has a curved shape that is recessed toward the outside of the cabinet, the shape of the surface 62b of the reinforcing plate 62 facing the door surface material 52 is the door surface material.
  • the surface 52a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface.
  • the convex portions 62 d and the concave portions 62 c provided on the reinforcing plate 62 are fitted into the concave portions 57 and the convex portions 55 of the door surface material 52 to attach the reinforcing plate 62 to the door surface material 52.
  • the opposing surface 62a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface, and in the case of FIG. 8, the opposing surface 62b of the reinforcing plate 62 facing the door surface material 52 is used as the door surface material 52. It may be provided in a curved shape that protrudes to the outside of the warehouse according to the curved shape, and the opposing surface 62a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface.
  • this embodiment demonstrated the case where the reinforcement board 62 was arrange
  • this invention is not limited to this, A refrigerator compartment door 23, the vegetable room door 25, the ice making room door 33, and the small freezer room door 35, a vacuum heat insulation panel is provided between the door face material arranged on the outside of each door and the door inner plate arranged on the inside. And a reinforcing plate in contact with the door surface material may be disposed between the door surface material and the vacuum heat insulating panel.

Abstract

Disclosed is a refrigerator (10) provided with a refrigerator main body (11) which is open at the front face and has a storage chamber (36) on the inside, and a door (37) for closing the front face opening of the refrigerator main body (11), wherein the door (37) is provided with a door surface element (52) disposed on the outside of the refrigerator, an indoor plate (54) disposed on the inside of the refrigerator, and a heat insulation portion (60) which is sandwiched between the door surface element (52) and the indoor plate (54) and which is provided with a vacuum heat insulation panel (64) and a foam insulation (66); and a reinforcing plate (62) which is in contact with the door surface element (52) is disposed between the door surface element (52) and the vacuum heat insulation panel (64).

Description

冷蔵庫refrigerator
　本発明は、扉の断熱材として真空断熱パネルを用いた冷蔵庫に関する。 The present invention relates to a refrigerator using a vacuum heat insulating panel as a door heat insulating material.
　冷蔵庫は、外箱と内箱との間に発泡断熱材を設けた冷蔵庫本体により構成され、その冷蔵庫本体の内部に貯蔵室を形成しているが、断熱性能を向上させて消費電力量を低減させたり、あるいは、断熱箱体の壁厚を薄くして庫内容積効率を向上させるため、外箱と内箱との間に充填する発泡断熱材の一部に換えて真空断熱パネルが設けられている。 The refrigerator is composed of a refrigerator body with a foam insulation between the outer box and the inner box, and a storage room is formed inside the refrigerator body, but it improves heat insulation performance and reduces power consumption. In order to improve the internal volume efficiency by reducing the wall thickness of the heat insulation box, a vacuum heat insulation panel is provided instead of a part of the foam insulation filled between the outer box and the inner box. ing.
　また、冷蔵庫本体の前面開口部を閉塞する扉についても、扉の外側に配される扉面材と、扉の内側に配される扉内板との間に発泡断熱材を配設した断熱部を設けているが、冷蔵庫本体と同様、断熱性能を向上させるため、断熱部に配設される発泡断熱材の一部に換えて真空断熱パネルが配設されているものが提案されている（例えば、特開２００４－１２５３９４号参照）。 In addition, for the door that closes the front opening of the refrigerator body, a heat insulating part in which a foam heat insulating material is disposed between the door surface material arranged outside the door and the door inner plate arranged inside the door. However, as with the refrigerator main body, in order to improve the heat insulation performance, it is proposed that a vacuum heat insulation panel is provided instead of a part of the foam heat insulating material provided in the heat insulation portion ( For example, see JP-A-2004-125394).
　下記引用文献１に記載された冷蔵庫は、図９に示すように、扉１２７の扉内板１４２に庫内側に成形された突起部１４３と奥行き方向の段違い面とを形成し、段違い面の最前面部１４４に突起部１４３を覆うように真空断熱パネル１３８を貼付けて硬質ウレタンフォーム１１３を注入発泡し、扉１２７の扉内板１４２と真空断熱パネル１３８とで挟まれた空間部１４６から突起部１４３に硬質ウレタンフォーム１１３が充填されている。 As shown in FIG. 9, the refrigerator described in the following cited document 1 forms a protrusion 143 formed on the inner side of the door 127 of the door 127 and a stepped surface in the depth direction. A vacuum heat insulation panel 138 is attached to the front surface portion 144 so as to cover the protrusion portion 143, and the rigid urethane foam 113 is injected and foamed. 143 is filled with a hard urethane foam 113.
特開２００４－１２５３９４号公報JP 2004-125394 A
　上記のような冷蔵庫では、真空断熱パネル１３８が扉１２７の外側に配された扉面材１５０に直接接しないので、真空断熱パネル１３８と硬質ウレタンフォーム１１３との熱収縮率の違いに起因して生じる外観の変形を抑えることができる。 In the refrigerator as described above, the vacuum heat insulation panel 138 is not in direct contact with the door face material 150 disposed outside the door 127, which is caused by the difference in thermal contraction rate between the vacuum heat insulation panel 138 and the rigid urethane foam 113. Deformation of the appearance that occurs can be suppressed.
　しかしながら、真空断熱パネル１３８が、奥行き方向の段違い面に貼付され片持ち状態で扉内板１４２に固定されているため、製造時に真空断熱パネル１３８が扉内板１４２から剥がれ落ち製造不良が起こりやすいという問題がある。 However, since the vacuum heat insulation panel 138 is affixed to the step surface in the depth direction and is fixed to the door inner plate 142 in a cantilever state, the vacuum heat insulation panel 138 is peeled off from the door inner plate 142 during manufacturing, and manufacturing defects are likely to occur. There is a problem.
　特に、扉内板１４２と真空断熱パネル１３８とで挟まれた空間部１４６から硬質ウレタンフォーム１１３が充填されるため、硬質ウレタンフォーム１１３の発泡圧力が扉内板１４２から真空断熱パネル１３８を剥がす方向へ作用し、硬質ウレタンフォーム１１３の発泡充填時に真空断熱パネル１３８が扉内板１４２から剥がれ落ちやすく、製造不良が起こりやすいという問題がある。 In particular, since the hard urethane foam 113 is filled from the space 146 sandwiched between the door inner plate 142 and the vacuum heat insulating panel 138, the foaming pressure of the hard urethane foam 113 peels the vacuum heat insulating panel 138 from the door inner plate 142. There is a problem that the vacuum heat insulation panel 138 is easily peeled off from the door inner plate 142 when foaming and filling the rigid urethane foam 113, and manufacturing defects are likely to occur.
　本発明は、上記問題を考慮してなされたものであり、扉面材と扉内板との間に形成された断熱部に真空断熱パネルを配設した扉を備えた冷蔵庫において、扉の製造時に真空断熱パネルが剥がれ落ちたりすることなく製造不良が発生しにくい冷蔵庫を提供することを目的とする。 The present invention has been made in consideration of the above problems, and in a refrigerator having a door provided with a vacuum heat insulating panel in a heat insulating portion formed between a door face material and a door inner plate, the manufacture of the door It is an object of the present invention to provide a refrigerator in which manufacturing defects are unlikely to occur without the vacuum insulation panel sometimes peeling off.
　本発明に係る冷蔵庫は、前面に開口し内部に貯蔵室が形成された冷蔵庫本体と、前記冷蔵庫本体の前面開口部を閉塞する扉とを備えた冷蔵庫において、前記扉は、庫外側に配された扉面材と、庫内側に配された扉内板と、前記扉面材と前記扉内板との間に挟まれ真空断熱パネルと発泡断熱材とが配設された断熱部とを備え、前記扉面材と前記真空断熱パネルとの間に前記扉面材に接する補強板が配設されていることを特徴とする。 The refrigerator according to the present invention includes a refrigerator main body that is open to the front and has a storage chamber formed therein, and a door that closes the front opening of the refrigerator main body. A door surface material, a door inner plate disposed inside the cabinet, and a heat insulating portion sandwiched between the door surface material and the door inner plate and provided with a vacuum heat insulating panel and a foam heat insulating material. A reinforcing plate in contact with the door face material is disposed between the door face material and the vacuum heat insulating panel.
　本発明の冷蔵庫では、上記構成により、扉の製造時に真空断熱パネルが剥がれ落ちたりすることなく製造不良を抑えることができる。 In the refrigerator of the present invention, due to the above configuration, it is possible to suppress manufacturing defects without the vacuum insulation panel being peeled off during the manufacture of the door.
本発明の第１実施形態に係る冷蔵庫の断面図である。It is sectional drawing of the refrigerator which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る冷蔵庫の正面図である。It is a front view of the refrigerator which concerns on 1st Embodiment of this invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG. 図３のＡ－Ａ断面図である。FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. 図４の要部拡大断面図である。It is a principal part expanded sectional view of FIG. 本発明の第１の変更例を示す冷凍室扉の要部拡大断面図である。It is a principal part expanded sectional view of the freezer compartment door which shows the 1st modification of this invention. 本発明の第２の変更例を示す冷凍室扉の要部拡大断面図である。It is a principal part expanded sectional view of the freezer compartment door which shows the 2nd modification of this invention. 本発明の第３の変更例を示す冷凍室扉の断面図である。It is sectional drawing of the freezer compartment door which shows the 3rd modification of this invention. 従来例を示す冷凍室扉の断面図である。It is sectional drawing of the freezer compartment door which shows a prior art example.
　以下、本発明の一実施形態について、図面を参照して説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
　本実施形態の冷蔵庫１０は、図１に示すように、鋼板からなる外箱１２と貯蔵空間を形成する内箱１３との間に断熱空間を設けて冷蔵庫１０の外郭をなす冷蔵庫本体１１を構成している。 The refrigerator 10 of this embodiment comprises the refrigerator main body 11 which provides a heat insulation space between the outer box 12 which consists of a steel plate, and the inner box 13 which forms a storage space, and makes the outline of the refrigerator 10, as shown in FIG. is doing.
　外箱１２の庫内側には、真空断熱パネル１６が貼り付けられており、外箱１２と内箱１３との間隙にポリウレタンフォームからなる発泡断熱材１７の原液を注入し発泡充填することで、外箱１２の庫内側に真空断熱パネル１６が配設された状態で、外箱１２及び内箱１３が一体化されている。 A vacuum heat insulation panel 16 is affixed to the inner side of the outer box 12, and a foamed heat insulating material 17 made of polyurethane foam is injected into the gap between the outer box 12 and the inner box 13 to fill with foam. The outer box 12 and the inner box 13 are integrated with the vacuum heat insulation panel 16 disposed inside the outer box 12.
　内箱１３の内部に形成された貯蔵空間は、断熱仕切壁１５によって上方の冷蔵空間と下方の冷凍空間とに区画されている。 The storage space formed inside the inner box 13 is partitioned by the heat insulating partition wall 15 into an upper refrigerated space and a lower refrigerated space.
　冷蔵空間は、さらに仕切壁２１によって上下に区画され、上部空間に複数段の載置棚を設けた冷蔵室２２が設けられ、下部空間に引き出し式の収納容器２５ａを配置する野菜室２４が設けられている。 The refrigerated space is further partitioned vertically by a partition wall 21, a refrigerated chamber 22 having a plurality of stages of mounting shelves is provided in the upper space, and a vegetable chamber 24 in which a drawer-type storage container 25 a is disposed in the lower space. It has been.
　野菜室２４の下方に配置された冷凍空間には、自動製氷機を備えた製氷室３２と小型冷凍室３４を左右に併設しており、その下方には冷凍室３６が設けられている。 In the freezing space arranged below the vegetable room 24, an ice making room 32 equipped with an automatic ice maker and small freezing rooms 34 are provided on the left and right, and a freezing room 36 is provided below the freezing room.
　図２に示すように、冷蔵室２２の前面開口部は、冷蔵庫本体１１の左右両側に設けられたヒンジ２３ａ，２３ａにより回動自在に枢支された左右一対の冷蔵室扉２３，２３により閉塞されている。野菜室２４、製氷室３２、小型冷凍室３４及び冷凍室３６の前面開口部は、引き出し式扉２５，３３，３５，３７により閉塞されている。各引き出し式扉２５，３３，３５，３７の裏面側に固着した左右一対の支持枠に収納容器２５ａ，３３ａ，３７ａが保持されており、開扉動作とともに庫外に引き出されるように構成されている。 As shown in FIG. 2, the front opening of the refrigerator compartment 22 is closed by a pair of left and right refrigerator compartment doors 23 and 23 pivotally supported by hinges 23 a and 23 a provided on the left and right sides of the refrigerator body 11. Has been. The front openings of the vegetable compartment 24, the ice making compartment 32, the small freezer compartment 34, and the freezer compartment 36 are closed by pull-out doors 25, 33, 35, and 37. The storage containers 25a, 33a, and 37a are held by a pair of left and right support frames fixed to the back side of each pull-out door 25, 33, 35, and 37, and are configured to be pulled out of the cabinet with the opening operation. Yes.
　そして、前記冷蔵空間および冷凍空間のそれぞれの背面部には、冷蔵用冷却器４１および冷凍用冷却器４２と、各冷却器４１，４２に対応するファン４３，４４がそれぞれ配設されている。冷蔵用冷却器４１及び冷凍用冷却器４２は、冷蔵庫本体１１の下部に設けた圧縮機４５の吐出側からの冷媒が、不図示の冷凍サイクルにより交互に導入されることで冷却される。冷蔵用冷却器４１及び冷凍用冷却器４２により生成された冷気は、ファン４３，４４によりダクトを介してそれぞれの貯蔵室内に導入され、各貯蔵室を所定の温度に冷却する。 And, on the respective rear portions of the refrigeration space and the freezing space, a refrigerating cooler 41, a freezing cooler 42, and fans 43, 44 corresponding to the coolers 41, 42 are arranged, respectively. The refrigerating cooler 41 and the refrigerating cooler 42 are cooled by alternately introducing refrigerant from the discharge side of the compressor 45 provided at the lower portion of the refrigerator body 11 by a refrigerating cycle (not shown). The cold air generated by the refrigeration cooler 41 and the refrigeration cooler 42 is introduced into the respective storage chambers via the ducts by the fans 43 and 44, and each storage chamber is cooled to a predetermined temperature.
　上記構成の冷蔵庫１０において、冷凍室３６の扉３７は、図３～図５に示すように、庫外側に配された扉面材５２と、庫内側に配された扉内板５４と、扉面材５２及び扉内板５４の上下端部を連結する上下キャップ５６，５８と、扉面材５２と扉内板５４との間に挟まれた断熱部６０とを備える。 In the refrigerator 10 having the above-described configuration, the door 37 of the freezer compartment 36 includes, as shown in FIGS. 3 to 5, a door face material 52 arranged on the outside of the cabinet, a door inner plate 54 arranged on the inside of the cabinet, and a door. Upper and lower caps 56, 58 that connect the upper and lower ends of the face material 52 and the door inner plate 54, and a heat insulating portion 60 sandwiched between the door face material 52 and the door inner plate 54.
　詳細には、図４に示すように、扉面材５２は、両側縁を冷凍室側にコ字状に折り曲げて側壁５３が形成された鋼板からなり、コ字状に折り返された側壁５３の先端部５３ａにおいて扉内板５４が固定されている。また、扉面材５２は、幅方向中央部に冷凍室扉３７の厚みが薄くなるように扉内板５４に向けて突出する凸部５５が設けられている。この凸部５５は、冷蔵庫１０の上下方向に沿って設けられている（図２参照）。 Specifically, as shown in FIG. 4, the door face material 52 is made of a steel plate in which both side edges are bent in a U-shape on the freezer compartment side to form a side wall 53, and the side wall 53 is folded back in a U-shape. A door inner plate 54 is fixed at the distal end portion 53a. Further, the door face material 52 is provided with a convex portion 55 that protrudes toward the door inner plate 54 so that the thickness of the freezer compartment door 37 is thin at the center in the width direction. This convex part 55 is provided along the up-down direction of the refrigerator 10 (refer FIG. 2).
　扉内板５４は、合成樹脂材を板状に形成してなり、冷凍室扉３７と冷凍室３６内部との隙間をシールするガスケット（不図示）を保持するためのガスケット保持部５４ａが周縁部に形成されている。扉内板５４の両側縁は、上記のように扉面材５２の側壁先端部５３ａに固定され、これにより、扉面材５２と扉内板５４との間には、上下に開口した断熱部６０が形成される。 The door inner plate 54 is formed of a synthetic resin material in a plate shape, and a gasket holding portion 54a for holding a gasket (not shown) that seals a gap between the freezer compartment door 37 and the inside of the freezer compartment 36 is a peripheral portion. Is formed. Both side edges of the door inner plate 54 are fixed to the side wall tip portion 53a of the door face member 52 as described above, whereby the heat insulating portion opened up and down between the door face member 52 and the door inner plate 54. 60 is formed.
　上キャップ５６は、合成樹脂からなり、断熱部６０の上面開口を閉塞して冷凍室扉３７の上面を構成する。下キャップ５８は、合成樹脂からなり、断熱部６０の下面開口を閉塞して冷凍室扉３７の下面を構成する。 The upper cap 56 is made of synthetic resin, and closes the upper surface opening of the heat insulating portion 60 to constitute the upper surface of the freezer compartment door 37. The lower cap 58 is made of a synthetic resin, and configures the lower surface of the freezer compartment door 37 by closing the lower surface opening of the heat insulating portion 60.
　断熱部６０は、扉面材５２、扉内板５４、及び上下キャップ５６，５８によって閉塞された空間であり、その内部に補強板６２と真空断熱パネル６４や発泡断熱材６６などの断熱材とが配設される。 The heat insulating portion 60 is a space closed by the door face material 52, the door inner plate 54, and the upper and lower caps 56, 58, and includes a reinforcing plate 62, a heat insulating material such as a vacuum heat insulating panel 64, and a foam heat insulating material 66 therein. Is disposed.
　補強板６２は、発泡スチロールなどの板状の断熱材であって、扉面材５２に設けられた凸部５５を避けるように凸部５５を挟んで両側に配置され、扉面材５２の断熱部６０側に付着されている。 The reinforcing plate 62 is a plate-like heat insulating material such as polystyrene foam, and is disposed on both sides of the convex portion 55 so as to avoid the convex portion 55 provided on the door surface material 52, and the heat insulating portion of the door surface material 52. It is attached to the 60 side.
　補強板６２の厚さＴは、図５に示すように、凸部５５の突出量Ｌ以上に設定されており、補強板６２が扉面材５２に付着された状態で、補強板６２における扉内板５４との対向面６２ａより奥まった位置に、あるいは、該対向面６２ａと同一平面内に、凸部５５の頂部５５ａが位置する。 As shown in FIG. 5, the thickness T of the reinforcing plate 62 is set to be greater than or equal to the protruding amount L of the convex portion 55, and the door of the reinforcing plate 62 is attached to the door face material 52. The top portion 55a of the convex portion 55 is located at a position deeper than the facing surface 62a with the inner plate 54 or in the same plane as the facing surface 62a.
　真空断熱パネル６４は、例えば、アルミニウム箔と合成樹脂のラミネートフィルムを製袋した厚みが７０～１２０μｍ程度のガスバリア容器に、綿状のガラス繊維（グラスウール）からなるコア材を収納し、ガスバリア容器の内部を０．０３～３０Ｐａ程度に真空排気した状態で封止して形成された板状の部材であり、凸部５５を挟んで両側に配置された一対の補強板６２の対向面６２ａに跨って付着されている。 For example, the vacuum heat insulation panel 64 accommodates a core material made of cotton-like glass fiber (glass wool) in a gas barrier container having a thickness of about 70 to 120 μm made of a laminated film of aluminum foil and a synthetic resin. It is a plate-like member formed by sealing with the inside being evacuated to about 0.03 to 30 Pa, and straddles the opposing surfaces 62a of the pair of reinforcing plates 62 arranged on both sides with the convex portion 55 interposed therebetween. Are attached.
　発泡断熱材６６は、ポリウレタンフォーム原液を断熱部６０に発泡充填することで形成され、扉面材５２と真空断熱パネル６４とで補強板６２を挟んだ状態で、扉面材５２、扉内板５４、及び上下キャップ５６，５８を一体化する。これにより、冷凍室３６の前面開口部を断熱して閉塞する断熱扉が形成される。 The foam heat insulating material 66 is formed by foaming and filling a polyurethane foam stock solution into the heat insulating portion 60, and the door surface material 52 and the door inner plate are sandwiched between the door surface material 52 and the vacuum heat insulating panel 64. 54 and upper and lower caps 56 and 58 are integrated. Thereby, the heat insulation door which heat-insulates and obstructs the front opening part of freezer compartment 36 is formed.
　以上のように、本実施形態の冷蔵庫１０では、真空断熱パネル６４と扉面材５２との間に補強板６２が介在され、真空断熱パネル６４が扉面材５２に直接接することがないため、真空断熱パネル６４と発泡断熱材６６との熱収縮率の違いに起因して生じる外観の変形を抑えることができると共に、扉面材５２に補強板６２が直接付着されされていることから扉面材５２の剛性を高めることができ、より一層、冷凍室扉３７の外観が変形しにくい。 As described above, in the refrigerator 10 of the present embodiment, the reinforcing plate 62 is interposed between the vacuum heat insulating panel 64 and the door surface material 52, and the vacuum heat insulating panel 64 does not directly contact the door surface material 52. The deformation of the appearance caused by the difference in heat shrinkage between the vacuum heat insulating panel 64 and the foam heat insulating material 66 can be suppressed, and the reinforcing plate 62 is directly attached to the door surface material 52, so that the door surface. The rigidity of the material 52 can be increased, and the appearance of the freezer compartment door 37 is further hardly deformed.
　しかも、真空断熱パネル６４が補強板６２を介在させて扉面材５２に付着されており、真空断熱パネル６４と扉内板５４との間にポリウレタンフォーム原液を発泡充填する空間が形成されている。そのため、ポリウレタンフォームの発泡圧力が真空断熱パネル６４を補強板６２に押さえ付ける方向へ作用することから、真空断熱パネル６４の位置ずれに起因した製造不良が起こりにくい。 Moreover, the vacuum heat insulation panel 64 is attached to the door face member 52 with the reinforcing plate 62 interposed therebetween, and a space for foaming and filling the polyurethane foam stock solution is formed between the vacuum heat insulation panel 64 and the door inner plate 54. . For this reason, the foaming pressure of the polyurethane foam acts in a direction in which the vacuum heat insulating panel 64 is pressed against the reinforcing plate 62, so that manufacturing defects due to the displacement of the vacuum heat insulating panel 64 are unlikely to occur.
　また、本実施形態において、補強板６２は、発泡スチロールなどの断熱材から構成されており、真空断熱パネル６４のアルミニウム箔を含んだガスバリア容器と鋼板製の扉面材５２との間に断熱材を介在させることができるため、庫外の熱がガスバリア容器を伝って庫内へ漏洩するのを遮断することができる。 In this embodiment, the reinforcing plate 62 is made of a heat insulating material such as polystyrene foam, and a heat insulating material is provided between the gas barrier container including the aluminum foil of the vacuum heat insulating panel 64 and the door face material 52 made of steel plate. Since it can be made to intervene, it can block that the heat outside the warehouse leaks into the warehouse through the gas barrier container.
　また、本実施形態の冷蔵庫１０では、補強板６２が凸部５５の左右に配置され凸部５５を避けるように配置されているため、補強板６２に凹凸形状を設ける必要が無く、製造が容易となる。しかも、補強板６２の厚さＴを、扉面材５２の凸部５５の突出量Ｌ以上に設定することで、真空断熱パネル６４が補強板６２と必ず面接触するため、凸部５５が当接することによる真空断熱パネル６４の損傷を防止することができる。 Moreover, in the refrigerator 10 of this embodiment, since the reinforcement board 62 is arrange | positioned so that the convex part 55 may be avoided on the right and left of the convex part 55, it is not necessary to provide an uneven | corrugated shape in the reinforcing board 62, and manufacture is easy. It becomes. In addition, by setting the thickness T of the reinforcing plate 62 to be equal to or greater than the protrusion amount L of the convex portion 55 of the door face material 52, the vacuum heat insulating panel 64 always comes into surface contact with the reinforcing plate 62, so Damage to the vacuum heat insulating panel 64 due to contact can be prevented.
　なお、本実施形態では、補強板６２を扉面材５２に設けられた凸部５５を避けるように配設したが、例えば、図６に示すように補強板６２に扉面材５２の凸部５５が嵌り込む凹部６２ｃを形成し、凸部５５を含んで補強板６２を扉面材５２に付着するように構成してもよい。 In the present embodiment, the reinforcing plate 62 is disposed so as to avoid the convex portion 55 provided on the door surface material 52, but, for example, the convex portion of the door surface material 52 is provided on the reinforcing plate 62 as shown in FIG. A recess 62 c into which 55 is fitted may be formed, and the reinforcing plate 62 including the protrusion 55 may be attached to the door face material 52.
　また、上記した本実施形態では、扉内板５４に向けて突出する凸部５５が扉面材５２に形成されている場合について説明したが、例えば、図７に示すように冷凍室扉３７の厚さ方向に陥没及び突出する凹部５７及び凸部５５が扉面材５２に形成されている場合や、図８に示すように冷凍室扉３７の幅方向中央部を上下方向にわたって冷凍室扉３７の厚さが厚くなるように、扉面材５２が庫外側に窪んだ湾曲形状をなしている場合などであれば、補強板６２における扉面材５２との対向面６２ｂの形状を扉面材５２の形状に応じた形状に設け、補強板６２における真空断熱パネル６４との対向面６２ａを平面に設けてもよい。 Moreover, although the above-described embodiment has been described with respect to the case where the convex portion 55 protruding toward the door inner plate 54 is formed on the door face material 52, for example, as shown in FIG. When the recessed part 57 and the convex part 55 which are depressed and protruded in the thickness direction are formed in the door face material 52, as shown in FIG. 8, the freezing room door 37 extends in the widthwise center part of the freezing room door 37 in the vertical direction. If the door surface material 52 has a curved shape that is recessed toward the outside of the cabinet, the shape of the surface 62b of the reinforcing plate 62 facing the door surface material 52 is the door surface material. The surface 52a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface.
　すなわち、図７の場合であれば、補強板６２に設けた凸部６２ｄ及び凹部６２ｃを扉面材５２の凹部５７及び凸部５５に嵌め入れて補強板６２を扉面材５２に付着させ、補強板６２における真空断熱パネル６４との対向面６２ａを平面に設けてもよく、また、図８の場合であれば、補強板６２における扉面材５２との対向面６２ｂを扉面材５２の湾曲形状に応じた庫外側に突出する湾曲形状に設け、補強板６２における真空断熱パネル６４との対向面６２ａを平面に設けてもよい。 That is, in the case of FIG. 7, the convex portions 62 d and the concave portions 62 c provided on the reinforcing plate 62 are fitted into the concave portions 57 and the convex portions 55 of the door surface material 52 to attach the reinforcing plate 62 to the door surface material 52. The opposing surface 62a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface, and in the case of FIG. 8, the opposing surface 62b of the reinforcing plate 62 facing the door surface material 52 is used as the door surface material 52. It may be provided in a curved shape that protrudes to the outside of the warehouse according to the curved shape, and the opposing surface 62a of the reinforcing plate 62 facing the vacuum heat insulating panel 64 may be provided on a flat surface.
　また、本実施形態では、冷凍室扉３７において扉面材５２と真空断熱パネル６４との間に補強板６２を配設する場合について説明したが、本発明はこれに限定されず、冷蔵室扉２３や野菜室扉２５や製氷室扉３３や小型冷凍室扉３５においても、各扉の庫外側に配された扉面材と庫内側に配された扉内板との間に、真空断熱パネルを設け、扉面材と真空断熱パネルとの間に扉面材に接する補強板を配設しても良い。 Moreover, although this embodiment demonstrated the case where the reinforcement board 62 was arrange | positioned between the door surface material 52 and the vacuum heat insulation panel 64 in the freezer compartment door 37, this invention is not limited to this, A refrigerator compartment door 23, the vegetable room door 25, the ice making room door 33, and the small freezer room door 35, a vacuum heat insulation panel is provided between the door face material arranged on the outside of each door and the door inner plate arranged on the inside. And a reinforcing plate in contact with the door surface material may be disposed between the door surface material and the vacuum heat insulating panel.
１０…冷蔵庫　　　　　　　１１…冷蔵庫本体　　　　２２…冷蔵室
２３…冷蔵室扉　　　　　　２４…野菜室　　　　　　２５…野菜室扉
２５ａ…収納容器　　　　　３２…製氷室　　　　　　３３…製氷室扉
３４…小型冷凍室　　　　　３５…小型冷凍室扉　　　３６…冷凍室
３７…冷凍室扉　　　　　　５２…扉面材　　　　　　５３…側壁
５３ａ…側壁先端部　　　　５３ａ…先端部　　　　　５４…扉内板
５４ａ…ガスケット保持部　５５…凸部　　　　　　　５６…上キャップ
５７…凹部　　　　　　　　５８…下キャップ　　　　６０…断熱部
６２…補強板　　　　　　　６４…真空断熱パネル　　６６…発泡断熱材 DESCRIPTION OF SYMBOLS 10 ... Refrigerator 11 ... Refrigerator main body 22 ... Refrigeration room 23 ... Refrigeration room door 24 ... Vegetable room 25 ... Vegetable room door 25a ... Storage container 32 ... Ice making room 33 ... Ice making room door 34 ... Small freezer room 35 ... Small freezer room door 36 ... Freezer compartment 37 ... Freezer compartment door 52 ... Door face material 53 ... Side wall 53a ... Side wall tip 53a ... Tip part 54 ... Door inner plate 54a ... Gasket holder 55 ... Convex part 56 ... Upper cap 57 ... Concave part 58 ... Lower cap 60 ... Heat insulation part 62 ... Reinforcement plate 64 ... Vacuum insulation panel 66 ... Foam insulation

Claims (5)

  1. 　前面に開口し内部に貯蔵室が形成された冷蔵庫本体と、前記冷蔵庫本体の前面開口部を閉塞する扉とを備えた冷蔵庫において、
    　前記扉は、庫外側に配された扉面材と、庫内側に配された扉内板と、前記扉面材と前記扉内板との間に挟まれ真空断熱パネルと発泡断熱材とが配設された断熱部とを備え、前記扉面材と前記真空断熱パネルとの間に前記扉面材に接する補強板が配設されていることを特徴とする冷蔵庫。     In the refrigerator comprising a refrigerator body having a front opening and a storage chamber formed therein, and a door closing the front opening of the refrigerator body,
    The door is sandwiched between a door surface material arranged on the outside of the cabinet, a door inner plate arranged on the inner side of the cabinet, the door surface material and the door inner plate, and a vacuum heat insulating panel and a foam heat insulating material. A refrigerator comprising: a heat insulating portion disposed; and a reinforcing plate in contact with the door surface material disposed between the door surface material and the vacuum heat insulating panel.
  2. 　前記補強板は断熱材からなることを特徴とする請求項１に記載の冷蔵庫。 The refrigerator according to claim 1, wherein the reinforcing plate is made of a heat insulating material.
  3. 　前記扉面材は、前記扉の厚さ方向に陥没及び突出する凹凸部を備え、
    　前記補強板における前記扉面材との対向面は、前記凹凸部が嵌り込む形状をなしていることを特徴とする請求項１又は２に記載の冷蔵庫。     The door face material is provided with a concave and convex portion projecting and projecting in the thickness direction of the door,
    The refrigerator according to claim 1, wherein a surface of the reinforcing plate facing the door surface material has a shape into which the uneven portion is fitted.
  4. 　前記扉面材は、前記扉内板に向けて突出する凸部を備え、
    　前記補強板は、前記凸部を避けて前記扉面材に付着されていることを特徴とする請求項１又は２のいずれか１項に記載の冷蔵庫。     The door face material includes a convex portion protruding toward the door inner plate,
    The refrigerator according to any one of claims 1 and 2, wherein the reinforcing plate is attached to the door face material while avoiding the convex portion.
  5. 　前記補強板の厚さが、前記凸部の突出量以上に設けられていることを特徴とする請求項４に記載の冷蔵庫。 The refrigerator according to claim 4, wherein a thickness of the reinforcing plate is greater than or equal to a protruding amount of the convex portion.
PCT/JP2010/004013 2009-11-11 2010-06-16 Refrigerator WO2011058678A1 (en)

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