JP2012021658A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2012021658A
JP2012021658A JP2010157468A JP2010157468A JP2012021658A JP 2012021658 A JP2012021658 A JP 2012021658A JP 2010157468 A JP2010157468 A JP 2010157468A JP 2010157468 A JP2010157468 A JP 2010157468A JP 2012021658 A JP2012021658 A JP 2012021658A
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Japan
Prior art keywords
duct
refrigerator
switching
compartment
room
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JP2010157468A
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JP5625561B2 (en
Inventor
Shinichi Horii
愼一 堀井
Masashi Yuasa
雅司 湯浅
Toshiyuki Moriuchi
利幸 森内
Ayaichi Ono
綾一 小野
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Panasonic Corp
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Panasonic Corp
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Priority to JP2010157468A priority Critical patent/JP5625561B2/en
Priority to EP11806429.4A priority patent/EP2594871B1/en
Priority to CN201180034557.1A priority patent/CN103003650B/en
Priority to PCT/JP2011/003401 priority patent/WO2012008092A1/en
Priority to CN201110198009.4A priority patent/CN102338528B/en
Publication of JP2012021658A publication Critical patent/JP2012021658A/en
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Publication of JP5625561B2 publication Critical patent/JP5625561B2/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/06Walls
    • F25D23/069Cooling space dividing partitions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062Arrangements 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
    • F25D17/065Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04Preventing the formation of frost or condensate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details 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
    • F25D2317/06Details 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
    • F25D2317/067Details 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

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PROBLEM TO BE SOLVED: To ensure an adequate amount of air by constructing on the back side a duck with a cooling air path for cooling a refrigerator compartment while the cool air path is simplified, to cool a switching compartment evenly at an proper temperature by integrally forming a discharge duct for the switching compartment communicated with the duct and by disposing therein a plurality of discharge ports, and to prevent foreign objects from being mixed in the discharge duct.SOLUTION: The refrigerator includes: a refrigerator compartment 35 in the upper part; a freezer compartment 37 in the lower part; the switching compartment 36 disposed between the refrigerator compartment 35 and the freezer compartment 37, for switching temperature zones; a cooler 44 provided behind the freezer compartment 37, for generating cold air; a fan 46 provided above the cooler 44, for forcing the generated cold air to each compartment; a duct device 49 for introducing the cold air into the refrigerator compartment and the switching compartment; and a partition wall 42 for vertically partitioning the refrigerator compartment and the switching compartment. The refrigerator is configured such that the duct device 49 is arranged behind the switching compartment 36, and the discharge duct for discharging the cold air into the switching compartment 36 is formed on the lower surface of the partition wall 42 connected with the duct device 49.

Description

本発明は冷却器で生成した冷気を強制循環させて温度帯の異なる各貯蔵室を冷却する冷蔵庫に関するものである。   The present invention relates to a refrigerator that forcibly circulates cold air generated by a cooler to cool each storage room having a different temperature range.

図14は、従来の冷蔵庫の縦断面図である。   FIG. 14 is a longitudinal sectional view of a conventional refrigerator.

図14に示すように、キャビネット1は、内箱2と外箱3との間に断熱材4が充填された断熱箱体5によって構成された冷蔵庫を示している。冷蔵庫は上から冷蔵室6、保温室7、冷凍室8を有しており、前面は冷蔵室開閉扉9、保温室開閉扉10、冷凍室開閉扉11となっている。   As shown in FIG. 14, the cabinet 1 shows a refrigerator constituted by a heat insulating box 5 filled with a heat insulating material 4 between an inner box 2 and an outer box 3. The refrigerator has a refrigerator compartment 6, a storage compartment 7, and a freezer compartment 8 from above, and a front side is a refrigerator compartment opening / closing door 9, a storage compartment opening / closing door 10, and a freezer compartment opening / closing door 11.

冷蔵室6と保温室7は断熱効果を有する仕切り板12によって、保温室7と冷凍室8は断熱効果を有する仕切り板13によって仕切られている。仕切り板13の奥には、冷凍室8と繋がるダクト14が設置されている。   The refrigerator compartment 6 and the storage room 7 are partitioned by a partition plate 12 having a heat insulation effect, and the storage room 7 and the freezer compartment 8 are partitioned by a partition plate 13 having a heat insulation effect. A duct 14 connected to the freezer compartment 8 is installed in the back of the partition plate 13.

冷蔵室6内には食品を収納するための冷蔵室棚及び、冷蔵室ケースが配置されている。また、冷蔵室6の内箱2の背面には、壁面に接してチューブオンシート15(蒸発器)が配置され、冷蔵室6庫内はチューブオンシート15によって冷却される冷却壁面を有する構成となっている。また、冷凍室8の背面には冷却器16と、冷却器16の上方にはファン17が配置している。   In the refrigerator compartment 6, a refrigerator compartment shelf for storing food and a refrigerator compartment case are arranged. In addition, a tube-on-sheet 15 (evaporator) is disposed in contact with the wall surface on the back surface of the inner box 2 of the refrigerator compartment 6, and the refrigerator compartment 6 has a cooling wall surface cooled by the tube-on-sheet 15. It has become. A cooler 16 is disposed on the back of the freezer compartment 8, and a fan 17 is disposed above the cooler 16.

また保温室7内は、食品を収納するための保温室ケースがあり、背面にはダンパー19を内部に有したダクト18が配置されている。   In addition, the inside of the warm room 7 has a warm room for storing food, and a duct 18 having a damper 19 inside is disposed on the back side.

以上のように構成された冷蔵庫について、以下その動作を説明する。   About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

冷蔵室6の冷却は、チューブオンシート15は、冷蔵室6の内箱5の背面に接しており、冷蔵室6の内箱5面が冷却壁面となり、自然冷却により冷蔵室6内の冷蔵室棚、冷蔵室ケースの冷却を行っている。   As for cooling of the refrigerator compartment 6, the tube-on-sheet 15 is in contact with the back surface of the inner box 5 of the refrigerator compartment 6, and the inner box 5 surface of the refrigerator compartment 6 serves as a cooling wall, and the refrigerator compartment in the refrigerator compartment 6 is naturally cooled. Cooling of shelves and refrigerator compartment cases.

一方、冷凍室8の冷却は、ファン17によって冷却室内にある冷却器16の冷気を強制循環させ、冷凍室8内を冷却する。冷凍室8内を循環した冷気は冷却器16へ戻る。   On the other hand, the cooling of the freezer compartment 8 is performed by forcibly circulating the cool air of the cooler 16 in the cooling chamber by the fan 17 to cool the inside of the freezer compartment 8. The cold air circulated in the freezer compartment 8 returns to the cooler 16.

さらに、保温室7の冷却は、ファン17によって、一部冷気はダクト14へ流入し、保温室7の背面にあるダクト18へ循環していく。ダクト18に流入した冷気は、ダンパー19を通過し、保温室ケースに吐出され、保温室ケース内の空気と熱交換した後、背面にある冷却器16への戻りダクトに吸い込まれ、冷却器16へ戻される。   Further, the cooling of the warming chamber 7 is partly cooled by the fan 17 and flows into the duct 14 and circulates to the duct 18 on the back of the warming chamber 7. The cold air that has flowed into the duct 18 passes through the damper 19, is discharged into the storage room case, exchanges heat with the air in the storage room case, and then is sucked into the return duct to the cooler 16 on the back surface. Returned to

以上のように、本実施の形態では、冷蔵室6と保温室7とは仕切り板12によって冷気が循環する通路を形成せず、上下に区画し、冷蔵室6はチューブオンシート15の冷却によって適温に冷却し、保温室7は冷却器16の蒸発潜熱をファン17にて保温室7内へ循環させ、さらに、保温室7の温度を検知しているダンパーにて循環する冷気量をコントロールすることにより保温室7の温度を一定に保つことで、保温室ケース内の食品の温度を一定に保つことが可能となり、食品の保鮮性を向上することができる。(例えば、特許文献1参照)。   As described above, in the present embodiment, the refrigerating room 6 and the storage room 7 do not form a passage through which the cold air is circulated by the partition plate 12, but are partitioned vertically, and the refrigerating room 6 is formed by cooling the tube-on-sheet 15. Cooling to an appropriate temperature, the holding chamber 7 circulates the latent heat of evaporation of the cooler 16 into the holding chamber 7 by the fan 17, and further controls the amount of cold air circulated by a damper that detects the temperature of the holding chamber 7. Thus, by keeping the temperature of the temperature-preserving chamber 7 constant, it becomes possible to keep the temperature of the food in the temperature-holding case constant, and the freshness of the food can be improved. (For example, refer to Patent Document 1).

特開2005−195293号公報JP 2005-195293 A

しかしながら、上記従来の構成では、冷蔵室6内に風路が構成されず、チューブオンシート15に近い場所と遠い場所では、庫内温度差が大きくなりやすい。また保温室7内を均一に冷却するため、ダクト18の内部は、多岐に分流するように複数の通路に分かれており、保温室7の天面に設けた複数の吐出口20に連通して冷気を吐出するため、ダクト18の構造が複雑になり、冷却器16からファン17によって導かれた冷気はダクト18内での風路抵抗が増して所定量の冷気を保温室7へ吐出できず、適温を確保できない虞があった。またダクト18の風路抵抗を低減するため風路面積を大きくする必要があり、このため保温室7の奥行き寸法が小さくなって内容積が低減する虞があった。   However, in the above-described conventional configuration, the air path is not configured in the refrigerator compartment 6, and the temperature difference inside the chamber tends to be large between a location close to the tube-on-seat 15 and a location far away. Further, in order to uniformly cool the inside of the warming chamber 7, the inside of the duct 18 is divided into a plurality of passages so as to be diverged in various ways, and communicated with a plurality of discharge ports 20 provided on the top surface of the warming chamber 7. Since the cool air is discharged, the structure of the duct 18 is complicated, and the cool air guided from the cooler 16 by the fan 17 has an increased air path resistance in the duct 18 and cannot discharge a predetermined amount of cool air to the temperature keeping chamber 7. There was a possibility that the proper temperature could not be secured. Further, it is necessary to increase the air passage area in order to reduce the air passage resistance of the duct 18, and thus there is a possibility that the depth dimension of the thermal storage chamber 7 is reduced and the internal volume is reduced.

本発明は、上記従来の課題を解決するもので、冷蔵室を冷却する冷気風路も備えたダクトを背面に構成しつつ冷却風路を簡素化し、適性な風量を確保するとともに、またダクトに連通する切替室への吐出ダクトを一体に形成し、吐出口を複数個配置して切替室内を万遍なく適温に冷却するとともに、吐出ダクト内への異物の混入を防止することを目的とする。   The present invention solves the above-described conventional problems, and while providing a duct having a cold air passage for cooling the refrigerator compartment on the back side, the cooling air passage is simplified, and an appropriate air volume is secured. The purpose is to integrally form a discharge duct to the switching chamber that communicates with each other, arrange a plurality of discharge ports to cool the switching chamber uniformly to an appropriate temperature, and prevent foreign matter from entering the discharge duct. .

上記従来の課題を解決するために、本発明の冷蔵庫は、上部に冷蔵室と下部に冷凍室、前記冷蔵室と前記冷凍室の間に温度帯を切替えられる切替室と、前記冷凍室の後方に冷気を生成する冷却器と、前記冷却器の上部に配置され生成された冷気を各室へ強制的に送風するファンと、前記冷蔵室と前記切替室へ前記冷気を送風する送風ダクトを備えたダクト装置と、前記冷蔵室と前記切替室を上下に区画する区画壁とを備えた冷蔵庫において、前記ダクト装置は前記切替室の背面に設置され、前記切替室に前記冷気を吐出する吐出ダクトは前記ダクト装置に接続して前記区画壁の下面に沿って前方へ延びて形成したものである。   In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a refrigeration room at the top, a freezer room at the bottom, a switching room that can switch a temperature zone between the refrigeration room and the freezer room, and a rear of the freezer room. A cooler that generates cool air, a fan that is disposed above the cooler and forcibly blows the generated cool air to each chamber, and a blower duct that blows the cool air to the refrigerator compartment and the switching chamber In the refrigerator comprising a duct device, and a refrigerator wall and a partition wall that divides the switching chamber vertically, the duct device is installed on the back surface of the switching chamber and discharges the cold air into the switching chamber Is formed by connecting to the duct device and extending forward along the lower surface of the partition wall.

これによって、切替室は吐出ダクトを通じて、切替室の前方側にも冷気を吐出して冷凍温度帯に設定されても室内を適温に冷却することが可能となり、また冷蔵室内に冷気を万遍なく吐出できるので冷蔵室の均温化も図ることができる。また切替室背面のダクト装置の風路構造を簡素化して切替室の奥行き寸法を確保でき、さらに各貯蔵室への風量を確保されることとなる。   As a result, the switching chamber discharges cold air to the front side of the switching chamber through the discharge duct, so that the room can be cooled to an appropriate temperature even when the refrigeration temperature zone is set. Since it can be discharged, the temperature in the refrigerator compartment can be equalized. In addition, the air duct structure of the duct device on the back of the switching chamber can be simplified to ensure the depth of the switching chamber, and the air volume to each storage chamber can be secured.

本発明の冷蔵庫は、冷却効率を向上させダクト装置と繋がっている切替室と冷蔵室を適温に冷却できる冷蔵庫を提供できる。   The refrigerator of the present invention can provide a refrigerator that can improve the cooling efficiency and cool the switching chamber and the refrigerator compartment connected to the duct device to an appropriate temperature.

本発明の実施の形態1における冷蔵庫の縦断面図The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention 本発明の実施の形態1における本体の正面図The front view of the main body in Embodiment 1 of this invention 本発明の実施の形態1における風路の概略図Schematic of the air path in Embodiment 1 of the present invention 本発明の実施の形態1におけるダクト装置の第1分解図First exploded view of a duct device according to Embodiment 1 of the present invention. 本発明の実施の形態1におけるダクト装置の第2分解図The 2nd exploded view of the duct device in Embodiment 1 of the present invention. 本発明の実施の形態1におけるダクト装置の斜視図The perspective view of the duct apparatus in Embodiment 1 of this invention 本発明の実施の形態1におけるダクト装置の第3分解図The 3rd exploded view of the duct device in Embodiment 1 of the present invention. 本発明の実施の形態1におけるダクト装置の概略図Schematic of the duct device in Embodiment 1 of the present invention 本発明の実施の形態1における要部分解図1 is an exploded view of a main part in Embodiment 1 of the present invention. 本発明の実施の形態1における要部斜視図The principal part perspective view in Embodiment 1 of this invention 本発明の実施の形態1における要部概略図Main part schematic in Embodiment 1 of this invention 本発明の実施の形態1における第2区画壁の斜視図The perspective view of the 2nd division wall in Embodiment 1 of this invention 本発明の実施の形態1の第2区画壁の分解斜視図The disassembled perspective view of the 2nd division wall of Embodiment 1 of this invention 従来の冷蔵庫の断面図Cross-sectional view of a conventional refrigerator

第1の発明は、上部に冷蔵室と下部に冷凍室、前記冷蔵室と前記冷凍室の間に温度帯を切替えられる切替室と、前記冷凍室の後方に冷気を生成する冷却器と、前記冷却器の上部に配置され生成された冷気を各室へ強制的に送風するファンと、前記冷蔵室と前記切替室へ前記冷気を導くダクト装置と、前記冷蔵室と前記切替室を上下に区画する区画壁とを備えた冷蔵庫において、前記ダクト装置は前記切替室の背面に設置され、前記切替室に前記冷気を吐出する吐出ダクトは前記ダクト装置に接続した前記区画壁の下面に形成したものであり、室内を適温に冷却することが可能となる。   The first invention includes a refrigerator compartment in the upper part, a freezer compartment in the lower part, a switching room in which a temperature zone can be switched between the refrigerator compartment and the freezer compartment, a cooler for generating cold air behind the freezer compartment, A fan that is arranged in the upper part of the cooler and forcibly blows the generated cool air to each room, a duct device that guides the cool air to the refrigerating room and the switching room, and the refrigerating room and the switching room are vertically divided In the refrigerator provided with a partition wall that performs, the duct device is installed on the back surface of the switching chamber, and the discharge duct that discharges the cold air to the switching chamber is formed on the lower surface of the partition wall connected to the duct device Thus, the room can be cooled to an appropriate temperature.

第2の発明は、第1の発明の冷蔵庫において、区画壁は断熱板と、前記断熱板の上面と下面を覆う樹脂部材と、前記断熱板の下面に切換室内へ冷気を導く吐出ダクト板とを有し、前記断熱板と前記吐出ダクト板とが前記樹脂部材で覆われて、前記区画壁と前記吐出ダクトを前記樹脂部材で一体に形成されたものであり、冷却器から吐出される冷気を冷蔵室と切替室に分流するときに、途中でダクト外へ漏れることなく導くことができるので、ロスなく風量を確保できる。   2nd invention is the refrigerator of 1st invention, A partition wall is a heat insulation board, The resin member which covers the upper surface and lower surface of the said heat insulation board, The discharge duct board which guide | induces cold air to a switching chamber on the lower surface of the said heat insulation board, The heat insulating plate and the discharge duct plate are covered with the resin member, and the partition wall and the discharge duct are integrally formed with the resin member, and cool air discharged from a cooler Can be guided without leaking out of the duct on the way, so that the air volume can be secured without loss.

第3の発明は、第1または第2の発明の冷蔵庫において、冷蔵庫本体を形成する外箱と内箱の間に発泡断熱材を充填発泡する前に区画壁は前記内箱の所定位置に取付けられ、前記発泡断熱材の充填発泡後、ダクト装置が前記区画壁の下方で、吐出ダクトの下部に連結されるものであり、区画壁と一体に形成された吐出ダクトの下部にダクト装置を接続するので、吐出ダクトとダクト装置との接合面の寸法バラツキを抑制して組立てることができ組立バラツキを抑えることができる。   According to a third invention, in the refrigerator according to the first or second invention, the partition wall is attached to a predetermined position of the inner box before filling and foaming the foam heat insulating material between the outer box and the inner box forming the refrigerator main body. After filling and foaming of the foam insulation material, the duct device is connected to the lower part of the discharge duct below the partition wall, and the duct device is connected to the lower part of the discharge duct formed integrally with the partition wall. Therefore, it is possible to assemble while suppressing the dimensional variation of the joint surface between the discharge duct and the duct device, and the assembly variation can be suppressed.

第4に記載の発明は、請求項1の発明に、区画壁は断熱板と、前記断熱板の上面を覆う上面樹脂部材と下面を覆う下面カバー部材とで構成され、前記区画壁は冷蔵庫本体へのウレタン充填発泡前に取付けられ、発泡後、ダクト装置を組立てた後、吐出ダクトを前記ダクト装置に接続するものであり、ダクト装置の設置バラツキを低減でき、組立て作業効率を向上できる。   According to a fourth aspect of the present invention, in the first aspect of the invention, the partition wall includes a heat insulating plate, an upper surface resin member that covers an upper surface of the heat insulating plate, and a lower surface cover member that covers a lower surface, and the partition wall is a refrigerator body. After the foaming, the duct device is assembled and then the discharge duct is connected to the duct device, so that the installation variation of the duct device can be reduced and the assembly work efficiency can be improved.

第5の発明は、第4の発明に、下面カバー部材は段差部が形成され、前記段差部に切換室に冷気を吐出する吐出口を形成したものであり、切換室への風路構造を簡素化できる。   According to a fifth aspect of the present invention, in the fourth aspect of the invention, the lower surface cover member is formed with a stepped portion, and a discharge port for discharging cool air to the switching chamber is formed in the stepped portion. It can be simplified.

以下、本発明の実施の形態について、図面を参照しながら説明するが、従来例または先に説明した実施の形態と同一構成については同一符号を付して、その詳細な説明は省略する。なお、この実施の形態によってこの発明が限定されるものではない。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(実施の形態1)
図1は、本発明の実施の形態1における冷蔵庫の縦断面図、図2は、本発明の実施の形態1における本体の正面図、図3は、本発明の実施の形態1における風路の概略図、図4は本発明の実施の形態1におけるダクト装置の第1分解図、図5は本発明の実施の形態1におけるダクト装置の第2分解図、図6は本発明の実施の形態1におけるダクト装置の斜視図、図7は本発明の実施の形態1におけるダクト装置の第3分解図、図8は本発明の実施の形態1におけるダクト装置の概略図、図9は本発明の実施の形態1における要部分解
図、図10は本発明の実施の形態1における要部斜視図、図11は本発明の実施の形態1における要部概略図、図12は本発明の実施の形態1における第2区画壁の斜視図、図13は本発明の実施の形態1の第2区画壁の分解斜視図である。
(Embodiment 1)
1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view of a main body according to Embodiment 1 of the present invention, and FIG. 3 is an air path according to Embodiment 1 of the present invention. 4 is a first exploded view of the duct device according to the first embodiment of the present invention, FIG. 5 is a second exploded view of the duct device according to the first embodiment of the present invention, and FIG. 6 is an embodiment of the present invention. FIG. 7 is a third exploded view of the duct device according to the first embodiment of the present invention, FIG. 8 is a schematic diagram of the duct device according to the first embodiment of the present invention, and FIG. FIG. 10 is a main part perspective view of the first embodiment of the present invention, FIG. 11 is a main part schematic diagram of the first embodiment of the present invention, and FIG. 12 is an embodiment of the present invention. FIG. 13 is a perspective view of the second partition wall in Embodiment 1, and FIG. It is an exploded perspective view of the partition wall.

図1において、冷蔵庫30の断熱箱体31は主に鋼板を用いた外箱32とABSなどの樹脂で成型された内箱33とで構成され、その内部には例えば硬質発泡ウレタンなどの発泡断熱材34が充填、周囲と断熱され、複数の貯蔵室に区分されている。最上部に冷蔵室35、その冷蔵室35の下部に切替室36、そして最下部に冷凍室37が配置される構成となっている。   In FIG. 1, a heat insulating box 31 of a refrigerator 30 is mainly composed of an outer box 32 using a steel plate and an inner box 33 formed of a resin such as ABS, and inside thereof, for example, a foam insulation such as hard foam urethane. The material 34 is filled and insulated from the surroundings, and is divided into a plurality of storage chambers. The refrigeration chamber 35 is disposed at the top, the switching chamber 36 is disposed below the refrigeration chamber 35, and the freezing chamber 37 is disposed at the bottom.

冷蔵室35の前面開口部には冷蔵室ドア38、切替室36の前面開口部には切替室ドア39、冷凍室37の前面開口部には冷凍室ドア40が、それぞれの前面開口部を開閉自在に枢支されている。   The refrigerator compartment door 38 opens and closes the front opening of the refrigerating room 35, the switching room door 39 opens the front opening of the switching room 36, and the freezing room door 40 opens and closes the front opening of the freezing room 37. It is freely pivoted.

冷蔵室35は冷蔵保存のために凍らない温度を下限に通常1℃〜5℃とし、切替室36は冷凍温度帯から冷蔵温度帯の温度切替設定が可能で、−18〜4℃まで1℃間隔で設定することができる。冷凍室37は冷凍温度帯に設定されており、冷凍保存のために通常−22℃〜−15℃で設定されているが、冷凍保存状態の向上のために、例えば−30℃や−25℃の低温で設定されることもある。   The refrigeration chamber 35 is normally set to 1 ° C. to 5 ° C. at the lower limit of the temperature at which it does not freeze for refrigerated storage, and the switching chamber 36 can be set to change the temperature from the refrigeration temperature zone to the refrigeration temperature zone. Can be set at intervals. The freezer compartment 37 is set in a freezing temperature zone and is usually set at −22 ° C. to −15 ° C. for frozen storage, but for example, −30 ° C. or −25 ° C. to improve the frozen storage state. It may be set at a low temperature.

また第1区画壁41によって切替室36と冷凍室37とは上下に区画され、第2区画壁42によって冷蔵室35と切替室36とは上下に区画されている。   Further, the switching chamber 36 and the freezing chamber 37 are vertically partitioned by the first partition wall 41, and the refrigerator compartment 35 and the switching chamber 36 are vertically partitioned by the second partition wall 42.

また冷凍室37の背面には冷気を生成する冷却室43が設けられ、内部には冷却器44が配設されている。冷却室43はカバーコイル45によって冷凍室37と断熱区画されている。冷却器44の上方に生成された冷気を強制的に送風するファン46が配置され、冷却器44の下方に、冷却器44に付着した霜や氷を除霜する除霜ヒータ47が設けられている。除霜ヒータ47は、具体的にはガラス製のガラス管ヒータであり、特に冷媒が炭化水素系冷媒ガスである場合、防爆対応としてガラス管が2重に形成された2重ガラス管ヒータが採用されている。またカバーコイル45は、樹脂製の化粧板45aと、スチロール材などの断熱材でファン46の保持部や冷気通路を形成したインスカバーコイル45bとで形成されている。   A cooling chamber 43 for generating cool air is provided on the back of the freezing chamber 37, and a cooler 44 is provided inside. The cooling chamber 43 is insulated from the freezing chamber 37 by a cover coil 45. A fan 46 that forcibly blows cool air generated above the cooler 44 is disposed, and a defrost heater 47 that defrosts frost and ice adhering to the cooler 44 is provided below the cooler 44. Yes. Specifically, the defrost heater 47 is a glass tube heater made of glass, and in particular, when the refrigerant is a hydrocarbon-based refrigerant gas, a double glass tube heater in which glass tubes are formed in a double manner is adopted for explosion protection. Has been. Further, the cover coil 45 is formed of a resin decorative plate 45a and an inner cover coil 45b in which a holding portion of the fan 46 and a cold air passage are formed by a heat insulating material such as a styrene material.

また切替室36の背面には、冷蔵室35と切替室36へ冷気を送風する送風ダクト48を有するダクト装置49が備えられている。送風ダクト48は冷蔵室35へ冷気を送風する冷蔵室送風ダクト48aと切替室36へ冷気を送風する切替室送風ダクト48bとがそれぞれダクト装置49内に左右に横並びで上下方向に向かって配置されている。ダクト装置49内には冷蔵室35と切替室36への冷気量を調節するダンパ装置50が埋設され、冷蔵室送風ダクト48aと切替室送風ダクト48bのそれぞれのダクト内に配置されて、通過する冷気量を別々にコントロールしている。   In addition, a duct device 49 having a cooling duct 35 and a blower duct 48 for blowing cool air to the switching chamber 36 is provided on the back surface of the switching chamber 36. The air duct 48 has a refrigerating room air duct 48a for sending cool air to the refrigerating room 35 and a switching room air duct 48b for sending cold air to the switching room 36, which are arranged side by side in the duct device 49 side by side in the vertical direction. ing. In the duct device 49, a damper device 50 for adjusting the amount of cold air to the refrigeration chamber 35 and the switching chamber 36 is embedded, and is disposed in each of the refrigeration chamber air duct 48a and the switching chamber air duct 48b and passes therethrough. The amount of cold air is controlled separately.

また冷蔵室送風ダクト48aを通って冷蔵室35の吐出口35aから吐出した冷気は冷蔵室35の下部背面に設けられた戻り口35bから冷蔵室帰還ダクト51aを通って冷却器44へ帰還する。切替室送風ダクト48bを通って切替室36へ吐出された冷気は切替室36の背面で、ダクト装置の下部に設けた切替室戻り口36cから切替室帰還ダクト51bを通って冷却器44へ帰還する。   The cold air discharged from the discharge port 35a of the refrigerating chamber 35 through the refrigerating chamber air duct 48a returns to the cooler 44 through the refrigerating chamber return duct 51a from the return port 35b provided on the lower back surface of the refrigerating chamber 35. The cold air discharged to the switching chamber 36 through the switching chamber air duct 48b returns to the cooler 44 from the switching chamber return port 36c provided in the lower part of the duct device through the switching chamber return duct 51b on the back surface of the switching chamber 36. To do.

冷蔵室帰還ダクト51aは送風ダクト48と横並びに配置され、これによりダクト装置49には冷蔵室送風ダクト48a、切替室送風ダクト48bそして冷蔵室帰還ダクト51aの3本のダクトが上下方向に向かって横並びに配置される。切替室帰還ダクト51bは
冷蔵室帰還ダクト51aと隣り合わせで前後の位置関係に配置され、切替室帰還ダクト51bは冷蔵室帰還ダクト51aよりも前方に配置される。
The refrigerating room return duct 51a is arranged side by side with the air duct 48, whereby three ducts of the refrigerating room air duct 48a, the switching room air duct 48b, and the refrigerating room return duct 51a are arranged vertically in the duct device 49. They are arranged side by side. The switching chamber return duct 51b is arranged next to the refrigerator compartment return duct 51a in the front-rear positional relationship, and the switching chamber return duct 51b is arranged in front of the refrigerator compartment return duct 51a.

ダクト装置49は切替室36の背面高さ及び左右幅寸法程度に大きく形成され、冷蔵室送風ダクト48aと切替室送風ダクト48bは切替室36の左右幅方向すなわちダクト装置49の幅方向のほぼ中央に配置し、冷蔵室帰還ダクト51aと切替室帰還ダクト51bは冷蔵室送風ダクト48aおよび切替室送風ダクト48bを中心とするダクト装置49の片側に集約配置している。   The duct device 49 is formed to have a large rear surface height and lateral width dimensions of the switching chamber 36, and the refrigeration chamber air duct 48 a and the switching chamber air duct 48 b are approximately in the center in the lateral width direction of the switching chamber 36, that is, the width direction of the duct device 49. The refrigerating room return duct 51a and the switching room return duct 51b are collectively arranged on one side of the duct device 49 centering on the refrigerating room air duct 48a and the switching room air duct 48b.

ダクト装置49は発泡スチロールから形成された上部ダクト部材49aと下部ダクト部材49bの2部品と、上部ダクト部材49aと下部ダクト部材49bの前面をカバーする樹脂製のダクト化粧板49cとで形成され、上部ダクト部材49aの下面部と下部ダクト部材49bの上面部とが上下方向で接続され、接続面をシールして、前面をダクト化粧板49cでカバーしている。したがって、ダクト装置49内を貫通する冷蔵室送風ダクト48aおよび切替室送風ダクト48bは上部ダクト部材49aと下部ダクト部材49bの接続によってダクト壁面を構成している。   The duct device 49 is composed of two parts, an upper duct member 49a and a lower duct member 49b, formed of foamed polystyrene, and a resin duct decorative plate 49c that covers the front surfaces of the upper duct member 49a and the lower duct member 49b. The lower surface portion of the duct member 49a and the upper surface portion of the lower duct member 49b are connected in the vertical direction, the connection surface is sealed, and the front surface is covered with the duct decorative plate 49c. Therefore, the refrigerating room air duct 48a and the switching room air duct 48b penetrating through the duct device 49 constitute a duct wall surface by connecting the upper duct member 49a and the lower duct member 49b.

またダンパ装置50は下部ダクト部材49b内に埋設され、具体的にはダンパ装置50のダンパ装置枠50aが上部ダクト部材49aとの接続面となる下部ダクト部材49bの接続面部49dよりも下方に配置するように埋設されている。   The damper device 50 is embedded in the lower duct member 49b. Specifically, the damper device frame 50a of the damper device 50 is disposed below the connection surface portion 49d of the lower duct member 49b that serves as a connection surface with the upper duct member 49a. It is buried to do.

また冷蔵室送風ダクト48aおよび切替室送風ダクト48bを中心とするダクト装置49の他側にはダンパ装置50の配線やコネクタを収納する配線収納部52や、冷蔵室35に配置される自動製氷装置の給水タンク53と冷凍室37に配置する製氷皿54とを接続する給水配管55が収納される凹部56が構成されている。   Further, on the other side of the duct device 49 centering on the refrigerating room air duct 48a and the switching room air duct 48b, a wiring housing portion 52 for housing the wiring and connectors of the damper device 50, and an automatic ice making device disposed in the refrigerating room 35 are provided. A recess 56 is formed in which a water supply pipe 55 that connects the water supply tank 53 and the ice tray 54 disposed in the freezer compartment 37 is accommodated.

具体的に、配線収納部52は上部ダクト部材49aあるいは下部ダクト部材49bとダクト化粧板49cとの間に形成された段差部74に構成される。この配線収納部52は上部ダクト部材49aと下部ダクト部材49bとのシール接続面部49dに跨って構成され、給水配管55を収納する凹部56を残して、前方に上部ダクト部材49aと下部ダクト部材49bの中に収納部52を形成している。上部ダクト部材49aと下部ダクト部材49bの外周部はシール接続部49dに向かって、接続部の断面が大きくなるように傾斜構造となっている。具体的には、上部ダクト部材49aの側面部は上面部から下面部に向かって末広がりの勾配形状(テーパー)が形成、また下部ダクト部材49bの側面部は下面部から上面部に向かって広がる勾配形状(テーパー)が形成されている。このためシール接続面部49dは断熱壁厚を大きく確保できるため、ダクト化粧板49cとの間で段差部74が確保しやすく、配線収納部52のスペース確保を容易にできる。   Specifically, the wiring storage portion 52 is configured by a stepped portion 74 formed between the upper duct member 49a or the lower duct member 49b and the duct decorative plate 49c. The wiring storage portion 52 is configured to straddle the seal connection surface portion 49d between the upper duct member 49a and the lower duct member 49b, leaving the recessed portion 56 for storing the water supply pipe 55, and the upper duct member 49a and the lower duct member 49b in front. The storage part 52 is formed in the inside. The outer peripheries of the upper duct member 49a and the lower duct member 49b are inclined so that the cross section of the connecting portion increases toward the seal connecting portion 49d. Specifically, the side surface portion of the upper duct member 49a has a divergent gradient shape (taper) from the upper surface portion toward the lower surface portion, and the side surface portion of the lower duct member 49b has a gradient that expands from the lower surface portion toward the upper surface portion. A shape (taper) is formed. For this reason, since the seal connecting surface portion 49d can ensure a large heat insulating wall thickness, the stepped portion 74 can be easily secured between the seal decorative surface portion 49d and the duct decorative plate 49c, and the space for the wiring storage portion 52 can be easily secured.

また切替室36には上面を開口し上部引出しケース69と下部引出しケース70とが前後方向に移動可能に備えられている。そして切替室36に冷気を吐出する上部吐出口36aは上部引出しケース69の上面開口部69aよりも上部に配置し、ダクト装置49に開口し切替室36に冷気を吐出する下部吐出口36bは、下部引出しケース70の上面開口部70aよりも上部で、上部引出しケース69の底面部69bとの間に形成されている。   The switching chamber 36 is provided with an upper drawer case 69 and a lower drawer case 70 that are open at the top and are movable in the front-rear direction. An upper discharge port 36a that discharges cold air to the switching chamber 36 is disposed above the upper surface opening 69a of the upper drawer case 69, and a lower discharge port 36b that opens to the duct device 49 and discharges cold air to the switching chamber 36 includes: It is formed above the upper surface opening 70 a of the lower drawer case 70 and between the bottom surface 69 b of the upper drawer case 69.

第2区画壁42は、合成樹脂材料で形成され、冷蔵室35と切替室36とを区画する区画断熱材42aと、区画断熱材42aとは別体で区画断熱材42aの下部に切替室36へのガイド壁を形成するガイド断熱材42bと、区画断熱材42aとガイド断熱材42bとの下面側を覆う下面カバー部材42cと、区画断熱材42aの上面側を覆う上面カバー部材42dとで形成されている。   The second partition wall 42 is made of a synthetic resin material, separate from the partition heat insulating material 42a and the partition heat insulating material 42a that partitions the refrigerator compartment 35 and the switching chamber 36, and below the partition heat insulating material 42a. A guide heat insulating material 42b that forms a guide wall, a lower surface cover member 42c that covers the lower surface side of the partition heat insulating material 42a and the guide heat insulating material 42b, and an upper surface cover member 42d that covers the upper surface side of the partition heat insulating material 42a. Has been.

そして第2区画壁42の前端部には第2区画壁42とは別部材で形成され、内部に合成樹脂部材、例えば発泡スチロール等の断熱部材を有する仕切板80が断熱箱体31に発泡断熱材34を充填する前に内箱33の左右幅方向に配置し、発泡断熱材34を充填したときに、仕切板80の左右端部に発泡断熱材34を漏らして固定している。   And the partition plate 80 which is formed in the front-end part of the 2nd partition wall 42 with a member different from the 2nd partition wall 42, and has a heat insulation member, such as a synthetic resin member, for example, a polystyrene foam, is the foaming heat insulating material in the heat insulation box 31. Before filling with 34, it is arranged in the left-right width direction of the inner box 33, and when the foam heat insulating material 34 is filled, the foam heat insulating material 34 is leaked and fixed to the left and right ends of the partition plate 80.

仕切板80には冷蔵室ドア38のガスケットと切替室ドア39のガスケットが吸着し室内の冷気が外部へ漏れないようにしている。   The partition plate 80 adsorbs the gasket of the refrigerator compartment door 38 and the gasket of the switching compartment door 39 so that the indoor cold air does not leak to the outside.

また仕切板80内には、仕切板80の表面に結露が発生しないように防露パイプ(図示しない)が埋設されている。   In addition, a dew-proof pipe (not shown) is embedded in the partition plate 80 so that condensation does not occur on the surface of the partition plate 80.

また、第2区画壁42は、断熱箱体31の発泡前に仕切板80の後方に設置し、発泡断熱材を断熱箱体31内に充填して、第2区画壁42の両側辺部に充填した断熱材を漏らせて第2区画壁42を断熱箱体31に固定している。   In addition, the second partition wall 42 is installed behind the partition plate 80 before foaming of the heat insulation box 31, and the foam insulation is filled in the heat insulation box 31, and on both sides of the second partition wall 42. The second partition wall 42 is fixed to the heat insulating box 31 by leaking the filled heat insulating material.

また、上部吐出口36aは切替室36の上部引出しケース69の上面開口部上に配置するように下面カバー部材42cに設けた段差部42eに複数の孔を設けて形成している。   Further, the upper discharge port 36a is formed by providing a plurality of holes in a step portion 42e provided in the lower surface cover member 42c so as to be disposed on the upper surface opening of the upper drawer case 69 of the switching chamber 36.

したがってガイド断熱材42bに設けた1つの開口幅に対して下面カバー部材42cに設けた上部吐出口36aを複数個備えることで、上部吐出口36a内に異物が入るのを抑制できるとともに、吐出冷気が上部引出しケース69内に万遍なく吐出されるように形成することができる。   Therefore, by providing a plurality of upper discharge ports 36a provided in the lower surface cover member 42c with respect to one opening width provided in the guide heat insulating material 42b, it is possible to prevent foreign matter from entering the upper discharge ports 36a and to discharge cold air. Can be uniformly discharged into the upper drawer case 69.

また、上部引出しケース69の背面壁69cを下部引出しケース70の前方向に傾斜させて、下部吐出口36bが背面壁69cに対向する位置に備えてもよい。これによって背面壁69cが吐出される冷気の案内板となって、下部引出しケース70内に冷気を導くことができる。   Further, the rear wall 69c of the upper drawer case 69 may be inclined in the forward direction of the lower drawer case 70 so that the lower discharge port 36b is provided at a position facing the rear wall 69c. As a result, the back wall 69c serves as a guide for cool air to be discharged, and the cool air can be guided into the lower drawer case 70.

またダクト装置49の上部ダクト部材49aとの接続面となる下部ダクト部材49bの接続面部49dは下部引出しケース70の上面開口部70aよりも下方で、底面部70bよりも上方の位置で構成され、下部引出しケース70の背面壁70cに対応する位置に構成されている。   Further, the connection surface portion 49d of the lower duct member 49b, which is a connection surface with the upper duct member 49a of the duct device 49, is configured at a position below the upper surface opening 70a of the lower drawer case 70 and above the bottom surface portion 70b. The lower drawer case 70 is configured at a position corresponding to the back wall 70c.

またダクト装置49の切替室帰還ダクト51bに隣接する冷蔵室帰還ダクト51a内のダクト面にはアルミ箔ヒータ57が貼付されている。アルミ箔ヒータ57は切替室36が冷蔵温度帯よりも温度が低い冷凍温度帯などに設定された場合、または低外気温度の時にヒータを通電制御する。これは冷蔵室帰還ダクト51aを通る冷蔵室35を循環した後の湿気を含んだ冷気は、切替室帰還ダクト51bに導かれた冷気よりも温度が高いため、冷蔵室帰還ダクト51a内が冷やされて結露または凍結する虞があるため、ヒータ通電して凍結防止を図る。   An aluminum foil heater 57 is attached to the duct surface in the refrigerating room return duct 51a adjacent to the switching room return duct 51b of the duct device 49. The aluminum foil heater 57 controls energization of the heater when the switching chamber 36 is set to a refrigeration temperature zone where the temperature is lower than the refrigeration temperature zone or when the temperature is low outside air. This is because the cold air containing moisture after circulating through the refrigerator compartment 35 passing through the refrigerator compartment return duct 51a is higher in temperature than the cold air led to the switching chamber return duct 51b, so that the inside of the refrigerator compartment return duct 51a is cooled. In order to prevent condensation or freezing, the heater is energized to prevent freezing.

またダクト装置49の下面部と接続される第1区画壁41には冷蔵室帰還ダクト51aに連通する冷蔵室帰還連通口58と、切替室帰還ダクト51bに連通する切替室帰還連通口59とを前後配置で開口し、前側に切替室帰還連通口59、後ろ側に冷蔵室帰還連通口58を設けて、冷却室43に連通している。第1区画壁41は断熱箱体31の発泡前に所定位置に組立てられ、断熱箱体31に充填されたウレタンを第1区画壁41の固定にも使うことで冷蔵庫の断熱性能を高めている。   The first partition wall 41 connected to the lower surface portion of the duct device 49 has a refrigerator compartment return communication port 58 communicating with the refrigerator compartment return duct 51a and a switching chamber return communication port 59 communicating with the switching chamber return duct 51b. Opened in the front-rear arrangement, the switching chamber return communication port 59 is provided on the front side, and the refrigeration chamber return communication port 58 is provided on the rear side so as to communicate with the cooling chamber 43. The first partition wall 41 is assembled at a predetermined position before foaming of the heat insulating box 31, and the heat insulation performance of the refrigerator is enhanced by using urethane filled in the heat insulating box 31 for fixing the first partition wall 41. .

具体的に、第1区画壁41は発泡スチロールで形成された第1区画壁41aと、第1区画壁41aの上面をカバーする第1上面区画カバー41bと、第1区画壁41aの下面を
カバーする第1下面区画カバー41cとで形成される。そして第1上面区画カバー41bと第1下面区画カバー41cとの間にウレタンを充填して、断熱箱体31に第1区画壁41を固定している。また第1区画壁41の上面にはアルミ箔ヒータ41dが貼付され、切替室36が冷蔵温度帯に設定された場合にアルミ箔ヒータ41dを通電して、適温化を図る。
Specifically, the first partition wall 41 covers a first partition wall 41a formed of foamed polystyrene, a first upper surface partition cover 41b that covers the upper surface of the first partition wall 41a, and a lower surface of the first partition wall 41a. The first lower surface section cover 41c is formed. The first partition wall 41 is fixed to the heat insulating box 31 by filling urethane between the first upper surface partition cover 41 b and the first lower surface partition cover 41 c. In addition, an aluminum foil heater 41d is attached to the upper surface of the first partition wall 41, and when the switching chamber 36 is set to a refrigeration temperature zone, the aluminum foil heater 41d is energized to achieve an appropriate temperature.

カバーコイル45には冷却器44の側方に併設され、冷却器44と仕切り部材75と冷却室43の背面壁によって仕切られた冷気戻り通路71が形成され、冷気戻り通路71には第1区画壁41の冷蔵室帰還連通口58と切替室帰還連通口59とを通過した冷気を導入する。また冷気戻り通路71は仕切り部材75によって、冷却器44の側部に形成され、冷気戻り通路71の上流側には、第1区画壁41とシールされて連通し、冷蔵室戻り冷気と切替室戻り冷気とが合流しないように分流する分流ダクト76があり、実施例の場合、切替室戻り冷気を冷蔵室戻り冷気と分流するように、切替室帰還連通口59に接続される分流ダクト76が形成されている。実施例の場合、上流側のみ分流ダクト76を形成し、途中から冷蔵室戻り冷気と切替室戻り冷気が合流するように構成されている。   The cover coil 45 is provided side by side with the cooler 44 and is formed with a cool air return passage 71 partitioned by the cooler 44, the partition member 75, and the back wall of the cooling chamber 43. Cold air that has passed through the refrigerator compartment return communication port 58 and the switching chamber return communication port 59 of the wall 41 is introduced. The cool air return passage 71 is formed on the side of the cooler 44 by the partition member 75, and the upstream side of the cool air return passage 71 is in communication with the first partition wall 41 so as to communicate with the return air in the refrigerator compartment and the switching chamber. In the embodiment, there is a diversion duct 76 connected to the switching chamber return communication port 59 so that the switching chamber return cold air is diverted with the refrigeration chamber return cold air. Is formed. In the case of the embodiment, the shunt duct 76 is formed only on the upstream side, and the cold room return cold air and the switching room return cold air are merged from the middle.

これは、切替室帰還ダクト51bを通過してきた冷気と冷蔵室帰還ダクト51aを通過してきた冷気とが冷気戻り通路71を通って合流すると、第1区画壁41の冷蔵室帰還連通口58と切替室帰還連通口59を介して冷気が逆流し、切替室戻り冷気よりも温度の高い冷蔵室戻り冷気が切替室帰還連通口59を通って上昇し切替室戻り口36cから切替室36へ逆流して切替室36を効率よく適温に冷却できない、また結露等を発生させる要因となる。   This is because when the cold air that has passed through the switching chamber return duct 51 b and the cold air that has passed through the cold room return duct 51 a merge through the cold air return passage 71, the first compartment wall 41 is switched to the cold room return communication port 58. Cold air flows backward through the room return communication port 59, and the cold room return cold air having a temperature higher than that of the switching room return cold air rises through the switching room return communication port 59 and flows back from the switching room return port 36c to the switching room 36. As a result, the switching chamber 36 cannot be efficiently cooled to an appropriate temperature, and condensation may occur.

したがって冷気戻り通路71の上流部分に冷気を分流し混ざらないようにしている。よって冷蔵室帰還ダクト51aを通過してきた冷気が下方へ流れず、切替室帰還連通口59へ逆流し、ダクト装置49の切替室戻り口36cから切替室36内へ逆流するのを防止するトラップ機能で、逆流防止ダクトとして作用している。   Therefore, the cool air is divided into the upstream portion of the cool air return passage 71 so as not to be mixed. Therefore, the trap function that prevents the cold air that has passed through the refrigerating chamber return duct 51a from flowing downward, backflowing to the switching chamber return communication port 59, and backflowing from the switching chamber return port 36c of the duct device 49 into the switching chamber 36 is prevented. Therefore, it acts as a backflow prevention duct.

分流ダクト76は戻り通路71の開口面積を確保するため上流部分のみに形成したが、戻り通路71の下流側の開口面積を確保可能であれば下流部分まで延長して形成してもよい。   The shunt duct 76 is formed only in the upstream portion in order to secure the opening area of the return passage 71, but may be formed to extend to the downstream portion as long as the downstream opening area of the return passage 71 can be secured.

また冷気戻り通路71を通る冷気が冷却器44の下部に帰還する冷気帰還口77が設けられ、すなわち冷気帰還口77は仕切り部材75の下端部75aに開口した構成となる。そして冷却器44の下方にほぼ水平に配置した除霜ヒータ47の端部は投影面で、冷却器44の一端部からはみ出し、冷気帰還口77内を通って冷気戻り通路71内に延在して配置している。   Further, a cold air return port 77 through which the cold air passing through the cold air return passage 71 returns to the lower part of the cooler 44 is provided, that is, the cold air return port 77 is open to the lower end portion 75 a of the partition member 75. The end of the defrost heater 47 disposed substantially horizontally below the cooler 44 is a projection surface, protrudes from one end of the cooler 44, passes through the cool air return port 77, and extends into the cool air return passage 71. Arranged.

これによって冷気戻り通路71内の湿気を帯びた冷気が冷却器44や冷凍室の冷たい冷気によって冷却され冷気戻り通路71内で凍結するのを防止できる。   As a result, it is possible to prevent the chilled air in the cold air return passage 71 from being cooled by the cool air in the cooler 44 or the freezer compartment and freezing in the cold air return passage 71.

またカバーコイル45にはファン46と、冷蔵室35と切替室36に冷気を送る冷気吐出口72が備えられ、ファン46と冷気戻り通路71の間に冷気吐出口72が形成され、冷気吐出口72と冷気戻り通路71の間に仕切り部材75が形成している。   Further, the cover coil 45 is provided with a fan 46 and a cold air discharge port 72 for sending cold air to the refrigerating chamber 35 and the switching chamber 36, and a cold air discharge port 72 is formed between the fan 46 and the cold air return passage 71. A partition member 75 is formed between 72 and the cool air return passage 71.

次に冷蔵室35について説明する。   Next, the refrigerator compartment 35 will be described.

冷蔵室35は複数の棚61で室内を上下に複数区画し冷蔵室35の背面に構成される冷蔵室送風ダクト48aは複数の棚61の後方に上下方向に形成され、各棚61に対応して冷蔵室吐出口35aが開口している。また冷蔵室送風ダクト48aは冷蔵室35空間内で
、左右に分岐する分岐路63が形成されてもよく、分岐路63を備えることで、冷蔵室35の幅方向の空間の温度分布を均一化することができる。
The refrigerator compartment 35 is divided into a plurality of upper and lower compartments by a plurality of shelves 61, and the refrigerator compartment air duct 48 a configured on the back surface of the refrigerator compartment 35 is formed in the vertical direction behind the plurality of shelves 61 and corresponds to each shelf 61. The refrigerator outlet 35a is open. The refrigerating room air duct 48a may be formed with a branch path 63 that branches left and right in the space of the refrigerating room 35. By providing the branch path 63, the temperature distribution in the space in the width direction of the refrigerating room 35 is made uniform. can do.

また冷蔵室35内の下部には野菜室64が形成され、野菜室64は、前面に開閉蓋64aがあり、前後方向に引出せる野菜ケース64bが構成されている。野菜室64はこのような構成以外に、上面に開口部を有し、上面蓋で密閉できるボックスケース65を収納しておいてもよい。   A vegetable compartment 64 is formed in the lower part of the refrigerator compartment 35. The vegetable compartment 64 has an open / close lid 64a on the front surface, and a vegetable case 64b that can be pulled out in the front-rear direction. In addition to such a configuration, the vegetable compartment 64 may have a box case 65 that has an opening on the top surface and can be sealed with a top cover.

また野菜室64は冷蔵室35の全幅寸法に合わせて構成されていてもよいが、本実施例の場合、野菜室64は冷蔵室35の全幅寸法よりも小さい寸法で構成され、野菜室64の横には自動製氷用の水を貯蔵する給水タンク53が着脱可能に収納されている。そして給水タンク53に接続される給水配管55が冷蔵室35から切替室36を通って冷凍室37まで延びている。給水タンク53内の水は図示しないモータによって吸上げられて給水配管55内に導かれる。   Further, the vegetable compartment 64 may be configured according to the full width dimension of the refrigerator compartment 35. However, in the present embodiment, the vegetable compartment 64 is configured with a dimension smaller than the full width dimension of the refrigerator compartment 35, and A water supply tank 53 for storing water for automatic ice making is detachably stored on the side. A water supply pipe 55 connected to the water supply tank 53 extends from the refrigerator compartment 35 to the freezer compartment 37 through the switching chamber 36. The water in the water supply tank 53 is sucked up by a motor (not shown) and guided into the water supply pipe 55.

切替室36は冷凍温度帯に設定可能であり、給水配管55内の水が凍る可能性もある。このため、給水配管55の外周には図示しない凍結防止用ヒータが巻かれ、また給水配管55は内箱33とダクト装置49の間に配置するので、ダクト装置49の裏面に凹部56を形成し給水配管55を凹部56に埋設して断熱している。またダンパ装置50の配線やコネクタを収納する配線収納部52もダクト装置49の裏面に収納部52を設け収納してもよい。   The switching chamber 36 can be set in a freezing temperature zone, and the water in the water supply pipe 55 may be frozen. Therefore, an antifreezing heater (not shown) is wound around the outer periphery of the water supply pipe 55 and the water supply pipe 55 is disposed between the inner box 33 and the duct device 49, so that a recess 56 is formed on the back surface of the duct device 49. The water supply pipe 55 is embedded in the recess 56 for heat insulation. In addition, the wiring storage portion 52 that stores the wiring and connectors of the damper device 50 may be stored by providing the storage portion 52 on the back surface of the duct device 49.

凹部56、収納部52を形成することで、給水配管55や配線収納部52に必要な前後方向の収納空間を低減でき切替室36の内容積を確保できる。また凹部56、配線収納部52はダクト装置49の冷蔵室送風ダクト48a、切替室送風ダクト48b、そして冷蔵室帰還ダクト51aが形成されている部分にラップしないように反対側に構成されているので、断熱性を損なうのを防止する。   By forming the recess 56 and the storage portion 52, the storage space in the front-rear direction necessary for the water supply pipe 55 and the wiring storage portion 52 can be reduced, and the internal volume of the switching chamber 36 can be secured. Moreover, since the recessed part 56 and the wiring accommodating part 52 are comprised by the other side so that it may not wrap to the part in which the refrigerator compartment ventilation duct 48a of the duct apparatus 49, the switching chamber ventilation duct 48b, and the refrigerator compartment return duct 51a are formed. , Prevent impairing thermal insulation.

また外箱32で、切替室36の背面に対応する位置には冷蔵庫30全体をコントロールする制御基板66が配置される。   Further, a control board 66 for controlling the entire refrigerator 30 is arranged at a position corresponding to the back surface of the switching chamber 36 in the outer box 32.

また冷蔵室35の温度を検知する冷蔵室温度センサー67は冷蔵室戻り口35b内に設置され、切替室36の温度を検知する切替室温度センサー68は切替室戻り口36c内に設置されている。   A refrigerator temperature sensor 67 for detecting the temperature of the refrigerator compartment 35 is installed in the refrigerator compartment return port 35b, and a switching chamber temperature sensor 68 for detecting the temperature of the switching chamber 36 is installed in the switching chamber return port 36c. .

以上のように構成された冷蔵庫について、以下その動作、作用を説明する。   About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

冷却室43の冷却器44で生成された冷気の一部はファン46によって前方へ強制的に送風され、冷凍室37はカバーコイル45の吐出口から吐出した冷気によって冷却され、冷気はカバーコイル45の下部に開口した戻り口を介して冷却器44の下部に導かれ、冷却器44で熱交換されて、再び新鮮な冷気がファン46によって循環を繰返す。これによって冷凍室37は冷凍室センサー(図示しない)の制御で適温に冷却される。   A part of the cold air generated by the cooler 44 in the cooling chamber 43 is forcibly blown forward by the fan 46, the freezing chamber 37 is cooled by the cold air discharged from the discharge port of the cover coil 45, and the cold air is covered by the cover coil 45. The air is guided to the lower part of the cooler 44 through a return port opened at the lower part of the heat exchanger, heat exchanged by the cooler 44, and fresh cold air is again circulated by the fan 46. As a result, the freezer compartment 37 is cooled to an appropriate temperature under the control of a freezer sensor (not shown).

またファン46の上方に吐出された冷気はカバーコイル45の冷気吐出口72から第1区画壁41の連通孔を経て、ダクト装置49に導かれる。そして冷蔵室35に吐出される冷気は冷蔵室温度センサー67により室内温度が設定温度以上の時、ダンパ装置50の冷蔵室ダンパ50aを開放し、冷蔵室送風ダクト48aを通って冷蔵室の吐出口35aから冷気を吐出し室内を冷却する。循環した冷気は戻り口35bに導かれ、冷蔵室35内の空気や貯蔵物に含まれる湿気を帯びた空気となって、ダクト装置49の冷蔵室帰還ダクト51aを通ってカバーコイル45と冷却室43の背面壁とで構成される冷気戻り通路71を
通って冷気帰還口77から冷却器44の下部に導かれて冷却器44と熱交換して、新鮮な冷気が再びファンによって強制的に送風される。
The cool air discharged above the fan 46 is guided from the cool air discharge port 72 of the cover coil 45 through the communication hole of the first partition wall 41 to the duct device 49. When the room temperature is equal to or higher than the set temperature by the cold room temperature sensor 67, the cold air discharged to the cold room 35 opens the cold room damper 50a of the damper device 50, passes through the cold room air duct 48a, and discharges the cold room. Cold air is discharged from 35a to cool the room. The circulated cold air is guided to the return port 35b, becomes air having moisture contained in the air in the refrigerating chamber 35 and the stored material, passes through the refrigerating chamber return duct 51a of the duct device 49, and the cover coil 45 and the cooling chamber. Through the cool air return passage 71 constituted by the back wall 43 of the gas 43, the cool air return port 77 leads to the lower part of the cooler 44 to exchange heat with the cooler 44, and fresh cool air is forcibly blown by the fan again. Is done.

これによって、冷蔵室35は、冷却器44から離れた位置にあっても、ファン46によって冷気を冷却器44に連通する冷蔵室送風ダクト48aに強制送風させ、ダクト装置49内の冷蔵室送風ダクト48aを通って冷蔵室35へ冷気を吐出させ、また冷蔵室温度センサー67によって冷蔵室ダンパ50aの開閉を制御するので、室内を設定温度に制御することができる。   Thus, even if the refrigerator compartment 35 is located away from the cooler 44, the fan 46 forcibly blows cool air to the refrigerator compartment air duct 48 a communicating with the cooler 44, and the refrigerator compartment air duct in the duct device 49 is forced. Cold air is discharged to the refrigerating room 35 through 48a, and the opening and closing of the refrigerating room damper 50a is controlled by the refrigerating room temperature sensor 67, so that the room can be controlled to the set temperature.

また切替室36に吐出される冷気は、切替室温度センサー68により室内温度が設定温度以上の場合、ダンパ装置50の切替室ダンパ50bを開放し、切替室送風ダクト48bを通って上部引出しケース69の上面開口部上まで延在して設けた切替室の吐出口36aから冷気を吐出することで、上部引出しケース69の前方まで冷気を導入するので、ドア39側に近い位置に収納された収納物も適温に冷却することができる。   In addition, when the room temperature is equal to or higher than the set temperature by the switching chamber temperature sensor 68, the cool air discharged into the switching chamber 36 opens the switching chamber damper 50b of the damper device 50, passes through the switching chamber air duct 48b, and passes through the upper drawer case 69. Since the cool air is introduced to the front of the upper drawer case 69 by discharging the cool air from the discharge port 36a of the switching chamber provided so as to extend to the top opening of the storage, the storage is stored in a position close to the door 39 side. Objects can also be cooled to an appropriate temperature.

また第2区画壁42を構成する下部カバー部材42cと一体に吐出口36aを形成したので、切替室36の容積効率を向上できる。   Further, since the discharge port 36a is formed integrally with the lower cover member 42c constituting the second partition wall 42, the volumetric efficiency of the switching chamber 36 can be improved.

また区画断熱材42aの下部に備えた下面カバー部材42cに複数個の上部吐出口36aを上部引出しケース69の幅方向に備えたことで、上部引出しケース69内を万遍なく適温に冷却することができ、また第2区画壁42内に異物等が混入するのを抑制できる。   In addition, a plurality of upper discharge ports 36a are provided in the width direction of the upper drawer case 69 in the lower surface cover member 42c provided at the lower part of the partition heat insulating material 42a, so that the inside of the upper drawer case 69 can be uniformly cooled to an appropriate temperature. Moreover, it can suppress that a foreign material etc. mix in the 2nd division wall 42. FIG.

また下部引出しケース70の上面開口部より高い位置に設けた吐出口36bから冷気を吐出し、上部引出しケース69の背面壁を冷気の流れを規制するガイドとして作用させ下部引出しケース70内に冷気を導入する。   Further, cool air is discharged from a discharge port 36b provided at a position higher than the opening on the upper surface of the lower drawer case 70, and the back wall of the upper drawer case 69 acts as a guide for regulating the flow of cool air, thereby causing the cool air to enter the lower drawer case 70. Introduce.

切替室36内を循環した冷気は戻り口36cに導かれ、切替室帰還ダクト51bを通って切替室帰還連通口59を通過し、カバーコイル45に形成された分流ダクト76を通って冷気帰還口77から冷却器44の下部に導かれ冷却器44と熱交換し、熱交換した冷気が再びファンによって強制的に送風される。   The cold air circulated in the switching chamber 36 is guided to the return port 36 c, passes through the switching chamber return duct 51 b, passes through the switching chamber return communication port 59, and passes through the shunt duct 76 formed in the cover coil 45. 77 is led to the lower part of the cooler 44 and exchanges heat with the cooler 44, and the cooled air is forcibly blown by the fan again.

これによって、切替室36は、冷却器44から離れた位置にあっても、ファン46によって冷気を冷却器44に連通する切替室送風ダクト48bに強制送風させてダクト装置49内を通って切替室36へ冷気を吐出させ、また切替室温度センサー68によって切替室ダンパ50bの開閉を制御するので、室内を設定温度に制御することができる。   As a result, even if the switching chamber 36 is located away from the cooler 44, the fan 46 forcibly blows cool air to the switching chamber air duct 48 b communicating with the cooler 44 and passes through the duct device 49 to switch the switching chamber 36. Since the cool air is discharged to 36 and the switching chamber temperature sensor 68 controls the opening and closing of the switching chamber damper 50b, the room can be controlled to the set temperature.

ダクト装置49内では、冷蔵室送風ダクト48aと切替室送風ダクト48bと冷蔵室帰還ダクト51aとが上下方向に延びて左右横並びに配置され、切替室帰還ダクト51bは冷蔵室帰還ダクト51aの前方に形成している。   In the duct device 49, a refrigerating room air duct 48a, a switching room air duct 48b, and a refrigerating room return duct 51a extend in the vertical direction and are arranged side by side. The switching room return duct 51b is disposed in front of the refrigerating room return duct 51a. Forming.

したがってダクト装置49の幅方向のほぼ中心位置に冷蔵室送風ダクト48aと切替室送風ダクト48bを設けて、一側に冷蔵室帰還ダクト51aと切替室帰還ダクト51bを断熱箱体31に対して前後方向に配置したので、他側に給水タンク53に接続する給水配管55と配線収納部52が配置されるので切替室36後方の無効空間となるダクト装置49と内箱33間の距離を小さくすることができ、切替室36の奥行き寸法を大きく確保できる。   Therefore, the refrigerating room air duct 48 a and the switching room air duct 48 b are provided at substantially the center position in the width direction of the duct device 49, and the refrigerating room return duct 51 a and the switching room return duct 51 b are arranged in front and rear with respect to the heat insulating box 31. Since the water supply pipe 55 and the wiring storage section 52 connected to the water supply tank 53 are arranged on the other side, the distance between the duct device 49 serving as an invalid space behind the switching chamber 36 and the inner box 33 is reduced. Therefore, a large depth dimension of the switching chamber 36 can be secured.

また冷蔵室送風ダクト48aは切替室36のダクト装置49内から冷蔵室35内の分岐路63に至るまで、ほぼ垂直方向にダクトが形成されるので、ダクト内の風路抵抗を低減し冷蔵室35への風量を確保できる。   Further, since the refrigerating room air duct 48a is formed in a substantially vertical direction from the inside of the duct device 49 of the switching room 36 to the branch path 63 in the refrigerating room 35, the air path resistance in the duct is reduced and the refrigerating room is reduced. The air volume to 35 can be secured.

また発泡断熱材34が充填されて、第1区画壁41と第2区画壁42は断熱箱体31に形成され、その後、第1区画壁41と第2区画壁42との間で、切替室36の背面にダクト装置49が配置することで、切替室36のダクト構成を簡単に形成することができる。   Also, the foam insulating material 34 is filled so that the first partition wall 41 and the second partition wall 42 are formed in the heat insulating box 31, and then the switching chamber between the first partition wall 41 and the second partition wall 42. By arranging the duct device 49 on the back surface of 36, the duct configuration of the switching chamber 36 can be easily formed.

切替室36はー18℃の冷凍温度帯から4℃の冷蔵温度帯まで設定温度を切替ることができ、これは切替室ダンパ50bの開度率を設定温度に応じて制御することで実現できる。   The switching chamber 36 can switch the set temperature from a freezing temperature zone of −18 ° C. to a refrigeration temperature zone of 4 ° C., and this can be realized by controlling the opening rate of the switching chamber damper 50b according to the set temperature. .

特に切替室36の設定温度が冷蔵温度よりも低い温度帯に設定された場合、切替室の吐出口36a、36bから吐出した冷気は戻り口36cを通って切替室帰還ダクト51b内に導かれる。冷蔵室帰還ダクト51aを通る冷気は切替室帰還ダクト51bを通る冷気よりも温度が高いため、冷蔵室帰還ダクト51aのダクト表面に結露が発生する虞があり、特に低外気温度の場合、結露が凍結する可能性、また結露水が冷蔵室帰還ダクト51a内を流れ、戻り通路71で凍結する可能性もある。このため冷蔵室帰還ダクト51aに貼付したヒータ57を運転することで結露水が発生しても蒸発させて、ダクト内の凍結を防止することができる。   In particular, when the set temperature of the switching chamber 36 is set to a temperature range lower than the refrigeration temperature, the cool air discharged from the discharge ports 36a and 36b of the switching chamber is guided into the switching chamber return duct 51b through the return port 36c. Since the cold air passing through the refrigerating room return duct 51a has a higher temperature than the cold air passing through the switching room return duct 51b, there is a risk that condensation will occur on the duct surface of the refrigerating room return duct 51a. There is a possibility that the water will freeze, and there is a possibility that the dew condensation water will flow in the refrigerating room return duct 51 a and freeze in the return passage 71. For this reason, by operating the heater 57 stuck to the refrigerator compartment return duct 51a, it is possible to evaporate even if condensed water is generated, and to prevent freezing in the duct.

また冷気戻り通路71の上流部分に冷気を分流し混ざらないようにすることで冷蔵室帰還ダクト51aを通過してきた冷気が下方へ流れず、切替室帰還連通口59へ逆流し、ダクト装置49の切替室戻り口36cから切替室36内へ逆流するのを防止するトラップ機能で、逆流防止ダクトとして作用し、冷蔵室戻り冷気が切替室帰還連通口59を通って切替室戻り口36cから切替室36へ逆流するのを阻止し、切替室36を効率よく適温に冷却でき、また結露等を防止できる。   Further, by distributing the cold air to the upstream portion of the cold air return passage 71 so as not to be mixed, the cold air that has passed through the refrigerating chamber return duct 51a does not flow downward but flows back to the switching chamber return communication port 59, and the duct device 49 A trap function that prevents backflow from the switching chamber return port 36c into the switching chamber 36, and acts as a backflow prevention duct. The cold room return cold air passes through the switching chamber return communication port 59 from the switching chamber return port 36c. Therefore, the switching chamber 36 can be efficiently cooled to an appropriate temperature, and condensation can be prevented.

また除霜ヒータ47の端部は投影面で、冷却器44の一端部からはみ出し、冷気帰還口77内を通って冷気戻り通路71内に延在して配置しているので、除霜時に、ヒータ熱で戻り通路71内を加熱できるので、結露や凍結を改善し防止することができ信頼性を高めることができる。   Moreover, since the edge part of the defrost heater 47 is a projection surface, it protrudes from the one end part of the cooler 44 and extends into the cold air return passage 71 through the cold air return port 77, Since the inside of the return passage 71 can be heated by heater heat, condensation and freezing can be improved and prevented, and reliability can be enhanced.

冷蔵室帰還ダクト51aと切替室帰還ダクト51bは切替室36や冷蔵室35よりも温度帯の低い冷凍室37領域を通って冷却器44の下方に連通するので、冷凍室37の温度帯よりも戻り冷気温度が最も高い冷蔵室帰還ダクト51aを冷凍室37から離れた位置に配置した方が冷蔵室帰還ダクト51a内が冷やされて結露の発生、さらには冷蔵室帰還ダクト51a内の凍結の虞を低減できる。   The refrigerating room return duct 51a and the switching room return duct 51b communicate with the lower part of the cooler 44 through the freezing room 37 region having a temperature range lower than that of the switching room 36 and the refrigerating room 35. If the refrigerator compartment return duct 51a having the highest return cold air temperature is arranged at a position away from the freezer compartment 37, the inside of the refrigerator compartment return duct 51a is cooled to cause dew condensation, and further, the refrigerator compartment return duct 51a may be frozen. Can be reduced.

したがって冷凍室37の温度に近い温度から冷蔵室温度に近い温度まで設定可能な切替室36の切替室帰還ダクト51bを冷蔵室帰還ダクト51aの前方に配置することで、冷蔵室帰還ダクト51a内の結露や凍結を低減できる。   Therefore, the switching chamber return duct 51b of the switching chamber 36 that can be set from a temperature close to the temperature of the freezer compartment 37 to a temperature close to the refrigerator compartment temperature is disposed in front of the refrigerator compartment return duct 51a, so that the inside of the refrigerator compartment feedback duct 51a is arranged. Condensation and freezing can be reduced.

以上のように、本発明にかかる冷蔵庫は、家庭用又は業務用冷蔵庫に対しても適用できる。   As described above, the refrigerator according to the present invention can also be applied to household or commercial refrigerators.

30 冷蔵庫
35 冷蔵室
36 切替室
37 冷凍室
42 第2区画壁
42a 区画断熱材
42b ガイド断熱材
42c 下面カバー部材
42d 上面カバー部材
42e 段差部
30 Refrigerator 35 Refrigerated room 36 Switching room 37 Freezer room 42 Second partition wall 42a Partition heat insulating material 42b Guide heat insulating material 42c Lower surface cover member 42d Upper surface cover member 42e Stepped portion

Claims (5)

上部に冷蔵室と下部に冷凍室、前記冷蔵室と前記冷凍室の間に温度帯を切替えられる切替室と、前記冷凍室の後方に冷気を生成する冷却器と、前記冷却器の上部に配置され生成された冷気を各室へ強制的に送風するファンと、前記冷蔵室と前記切替室へ前記冷気を導くダクト装置と、前記冷蔵室と前記切替室を上下に区画する区画壁とを備えた冷蔵庫において、前記ダクト装置は前記切替室の背面に設置され、前記切替室に前記冷気を吐出する吐出ダクトは前記ダクト装置に接続した前記区画壁の下面に形成した冷蔵庫。 A refrigeration room at the top, a freezing room at the bottom, a switching room that can switch the temperature zone between the refrigeration room and the freezing room, a cooler that generates cool air behind the freezing room, and an upper part of the cooler A fan that forcibly blows the generated cold air to each chamber, a duct device that guides the cold air to the refrigerating chamber and the switching chamber, and a partition wall that vertically partitions the refrigerating chamber and the switching chamber. In the refrigerator, the duct device is installed on a back surface of the switching chamber, and a discharge duct for discharging the cold air to the switching chamber is formed on a lower surface of the partition wall connected to the duct device. 区画壁は断熱板と、前記断熱板の上面と下面を覆うカバー部材と、前記断熱板の下面に切換室内へ冷気を導く吐出ダクト板とを有し、前記断熱板と前記吐出ダクト板とが前記カバー部材で覆われて、前記区画壁と前記吐出ダクトを前記カバー部材で一体に形成されたことを特徴とする請求項1に記載の冷蔵庫。 The partition wall includes a heat insulating plate, a cover member that covers the upper and lower surfaces of the heat insulating plate, and a discharge duct plate that guides cold air into the switching chamber on the lower surface of the heat insulating plate, and the heat insulating plate and the discharge duct plate are The refrigerator according to claim 1, wherein the refrigerator is covered with the cover member, and the partition wall and the discharge duct are integrally formed with the cover member. 冷蔵庫本体を形成する外箱と内箱の間に発泡断熱材を充填発泡する前に区画壁は前記内箱の所定位置に取付けられ、前記発泡断熱材の充填発泡後、ダクト装置が前記区画壁の下方で、吐出ダクトの下部に連結されることを特徴とする請求項1または2の冷蔵庫。 Before filling and foaming the foam insulation between the outer box and the inner box forming the refrigerator main body, the partition wall is attached at a predetermined position of the inner box, and after filling and foaming of the foam insulation, the duct device is connected to the partition wall. The refrigerator according to claim 1, wherein the refrigerator is connected to a lower portion of the discharge duct. 区画壁は断熱板と、前記断熱板の上面を覆う上面樹脂部材と下面を覆う下面カバー部材とで構成され、前記区画壁は冷蔵庫本体へのウレタン充填発泡前に取付けられ、発泡後、ダクト装置を組立てた後、吐出ダクトを前記ダクト装置に接続する請求項1の冷蔵庫。 The partition wall is composed of a heat insulating plate, an upper surface resin member that covers the upper surface of the heat insulating plate, and a lower surface cover member that covers the lower surface, and the partition wall is attached before urethane filling foaming to the refrigerator body, and after foaming, a duct device The refrigerator according to claim 1, wherein a discharge duct is connected to the duct device after assembling. 下面カバー部材には段差部が形成され、前記段差部に切替室へ冷気を吐出する吐出口を形成した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 step portion is formed in the lower surface cover member, and a discharge port for discharging cool air to the switching chamber is formed in the step portion.
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