JP5510132B2

JP5510132B2 - refrigerator

Info

Publication number: JP5510132B2
Application number: JP2010153590A
Authority: JP
Inventors: 愼一堀井
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2009-12-24
Filing date: 2010-07-06
Publication date: 2014-06-04
Anticipated expiration: 2030-07-06
Also published as: JP2011149680A

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、貯蔵室の奥行き寸法を維持して内容積を確保したダクト装置を有する冷蔵庫を提供することを目的とする。 The present invention solves the above-described conventional problems, and while simplifying the cooling air passage while configuring a duct having a cold air passage for cooling the refrigerator compartment on the back surface, ensuring an appropriate air volume, It aims at providing the refrigerator which has a duct apparatus which maintained the depth dimension and secured the internal volume.

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を有する冷却室があり、前記ファンによって前記冷蔵室へ冷気を送風する冷蔵室送風ダクトと、前記冷蔵室内に吐出された冷気を前記冷却器に帰還させる冷蔵室帰還ダクトとを有するダクト装置とを備えた冷蔵庫において、前記ダクト装置は上部ダクト部材と下部ダクト部材とを上下方向でシールするシール接続部によって接続したものである。 In order to solve the above-described conventional problems, the refrigerator of the present invention is generated by being arranged in the upper part of the refrigerator, the refrigerator in the upper part, the freezer in the lower part, the cooler for generating cold air behind the freezer. There is a cooling chamber having a fan for forcibly blowing the cool air to each chamber, and a cooler chamber air duct that blows cool air to the refrigerating chamber by the fan, and the cool air discharged into the refrigerating chamber to the cooler In a refrigerator including a duct device having a refrigeration chamber return duct to be returned, the duct device is formed by connecting an upper duct member and a lower duct member by a seal connecting portion that seals in the vertical direction.

これによって、ダクト装置内に形成されるダクトのシール接続部からダクト内を通る冷気が外部へ漏れる虞を低減でき、さらにダクト装置内部に機能部品を埋設した場合にもシール接続部から外部への冷気漏れを低減することができ、ダクト装置周辺の信頼性向上、各貯蔵室への適正風量を確保することができる。 As a result, the risk of cold air passing through the duct from the seal connection portion of the duct formed in the duct device can be reduced to the outside, and even when a functional component is embedded inside the duct device, the seal connection portion can be transferred to the outside. Cold air leakage can be reduced, reliability around the duct device can be improved, and an appropriate air volume to each storage room can be secured.

本発明の冷蔵庫は、上下ダクト部材を上下方向でシールして組み立てるダクト装置の構造にしたことで、ダクト内の冷気が外部へ漏れるのを低減し、冷却効率を向上させ、ダクト装置の信頼性を確保した冷蔵庫を提供できる。 The refrigerator of the present invention has the structure of a duct device that is assembled by sealing the upper and lower duct members in the vertical direction, thereby reducing the cool air in the duct from leaking to the outside, improving the cooling efficiency, and the reliability of the duct device. Can be provided.

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における上部ダクト部材の斜視図The perspective view of the upper duct member in Embodiment 1 of this invention 本発明の実施の形態１における下部ダクト部材の斜視図The perspective view of the lower duct member in 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を有する冷却室があり、前記ファンによって前記冷蔵室へ冷気を送風する冷蔵室送風ダクトと、前記冷蔵室内に吐出された冷気を前記冷却器に帰還させる冷蔵室帰還ダクトとを有するダクト装置とを備えた冷蔵庫において、前記ダクト装置は上部ダクト部材と下部ダクト部材とを上下方向でシールするシール接続部によって接続したこととなり、ダクト装置内に形成されるダクトのシール接続部からダクト内を通る冷気が外部へ漏れる虞を低減でき、さらにダクト装置内部に機能部品を埋設した場合にもシール接続部から外部への冷気漏れを低減することができ、ダクト装置周辺の信頼性向上、各貯蔵室への適正風量を確保することができる。 The first invention is a refrigerator in the upper part, a freezer room in the lower part, a cooler that generates cold air behind the freezer room, and the generated cool air that is arranged in the upper part of the cooler is forcibly blown to each room A cooling chamber having a cooling chamber, a duct having a cooling chamber air duct that blows cool air to the refrigerating chamber by the fan, and a refrigerating chamber return duct that returns the cool air discharged into the refrigerating chamber to the cooler In the refrigerator provided with a device, the duct device is connected to the upper duct member and the lower duct member by a seal connecting portion that seals in the vertical direction, and from the seal connecting portion of the duct formed in the duct device to the inside of the duct. The possibility that the cold air passing through the outside leaks to the outside can be reduced, and even when functional parts are embedded inside the duct device, the leakage of the cold air from the seal connecting portion to the outside can be reduced. Improving the reliability of the peripheral device, it is possible to secure a proper amount of air into the storage rooms.

第２の発明は、第１の発明の冷蔵庫において、冷蔵室への冷気量を調節するダンパー装置は上部ダクト部材または下部ダクト部材内に埋設したものであり、ダンパー装置周辺のシール性を高めることができ、外部への冷気漏れを低減することができる。 According to a second aspect of the present invention, in the refrigerator of the first aspect, the damper device for adjusting the amount of cold air to the refrigerator compartment is embedded in the upper duct member or the lower duct member, and improves the sealing performance around the damper device. It is possible to reduce leakage of cold air to the outside.

第３の発明は、第１の発明の冷蔵庫において、上部ダクト部材と下部ダクト部材の外周部は互いにシール接続部に向かって、接続部の断面が小さくなるように傾斜構造となっているものであり、シール接続部の面積が小さくなるので、シール性を高めることができ外部への冷気漏れをさらに低減することができる。 According to a third invention, in the refrigerator of the first invention, the outer peripheral portions of the upper duct member and the lower duct member are inclined so that the cross section of the connecting portion becomes smaller toward the seal connecting portion. In addition, since the area of the seal connecting portion is reduced, the sealing performance can be improved and the cold air leakage to the outside can be further reduced.

第４に記載の発明は、請求項１の発明に、機能部品に配線される電気配線部と、前記電気配線部を収納する配線収納部とを備えた冷蔵庫において、前記配線収納部は断熱材で成形されたダクト装置に凹部を形成して収納したものであり、水侵入の防止、さらにダクト装置の無効空間を有効に活用することができ、内容積効率を向上することができる。 According to a fourth aspect of the present invention, in the refrigerator according to the first aspect of the present invention, the refrigerator includes an electrical wiring portion wired to a functional component and a wiring storage portion that stores the electrical wiring portion. In the duct device formed with the concave portion, the concave portion is formed and stored, so that water intrusion can be prevented, the invalid space of the duct device can be effectively used, and the internal volume efficiency can be improved.

第５に記載の発明は、第１の発明の冷蔵庫において、上下ダクト部材の金型成型において送風ダクト間に突き出し部を設けることによって、送風ダクトのシール面の成型精度を確保することができる。 In the refrigerator according to the fifth aspect, in the refrigerator according to the first aspect, by providing a protrusion between the air ducts in the mold forming of the upper and lower duct members, the molding accuracy of the sealing surface of the air duct can be ensured.

第６に記載の発明は、第１の発明の冷蔵庫において、上下ダクト部材の金型成型において送風ダクト内に突き出し部を設けることによって、シール面に影響せず、突き出しに適した形状にすることができ、送風ダクトのシール性を向上することができる。 In the refrigerator according to the first aspect of the present invention, in the refrigerator of the first invention, by providing a protruding portion in the blower duct in the molding of the upper and lower duct members, the shape is suitable for the protruding without affecting the sealing surface. It is possible to improve the sealing performance of the air duct.

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における上部ダクト部材の斜視図、図１３は本発明の実施の形態１における下部ダクト部材の斜視図である。 (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 an upper duct member in Embodiment 1, and FIG. 13 shows Embodiment 1 of the present invention. It is a perspective view of a definitive lower duct member.

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 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末広がりの勾配形状（テーパー）が形成されている。このためシール接続部４９ｄのシール面積が大きくなるので、シール接続部４９ｄのシール性をより高めることができ、外部への冷気漏れをさらに低減することができる。 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 slope shape (taper) that widens from the upper surface portion toward the lower surface portion, and the side surface portion of the lower duct member 49b expands toward the upper surface portion from the lower surface portion. A gradient shape (taper) is formed. For this reason, since the seal area of the seal connection part 49d becomes large, the sealing performance of the seal connection part 49d can be further improved, and the cold air leakage to the outside can be further reduced.

またシール接続部４９ｄとダクト化粧板４９ｃとの間で段差部７４が確保しやすく、スチロール材で形成された上部ダクト部材４９ａと下部ダクト部材４９ｂに跨って外側から内部に向かって形成した凹部を配線収納部５２としてスペース確保している。これによってダクト装置の無効空間を配線収納部５２として有効に活用することができ、電気配線の水侵入も防止できて、切替室３６の有効内容積も向上することができる。 Further, a stepped portion 74 is easily secured between the seal connecting portion 49d and the duct decorative plate 49c, and a concave portion formed from the outside to the inside over the upper duct member 49a and the lower duct member 49b formed of styrene material. Space is secured as the wiring storage portion 52. As a result, the invalid space of the duct device can be effectively used as the wiring storage portion 52, water intrusion of the electrical wiring can be prevented, and the effective internal volume of the switching chamber 36 can be improved.

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。または、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。 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. Alternatively, the back wall 69c of the upper drawer case 69 may be inclined in the front direction of the lower drawer case 70 so that the lower discharge port 36b is provided at a position facing the back 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.

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部品で風路を構成している。上部ダクト部材４９ａ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および冷蔵室帰還ダクト５１ａのそれぞれダクトは、冷気の混流を防ぐために壁によって遮断されている。発泡スチロールで成型される上部ダクト部材４９ａの金型成型時において、上部ダクト部材４９ａを部分的に押して突き出す金型構造である突き出し部７８を上部ダクト部材４９ａの表面に備えることによって、部材を金型から取り出すことができる。冷蔵室送風ダクト４８ａと切替室送風ダクト４８ｂ間に突き出し部７８ａや、切替室送風ダクト４８ｂと冷蔵室帰還ダクト５１ａ間に突き出し部７８ｂを設けることによって、すなわち上部ダクト部材４９ａに複数の突き出し部を形成することで、ダクト間の冷気を遮断する壁の成型性の精度向上を行うことができる。 The duct device 49 forms an air passage with two parts, an upper duct member 49a and a lower duct member 49b, formed of foamed polystyrene. Each of the refrigerating room air duct 48a, the switching room air duct 48b, and the refrigerating room return duct 51a penetrating the upper duct member 49a is blocked by a wall in order to prevent a mixed flow of cold air. At the time of molding the upper duct member 49a molded by the polystyrene foam, the upper duct member 49a is provided with a protruding portion 78 on the surface of the upper duct member 49a by partially pushing the upper duct member 49a and protruding. Can be taken out from. By providing a protrusion 78a between the refrigerating room air duct 48a and the switching room air duct 48b and a protrusion 78b between the switching room air duct 48b and the refrigerating room return duct 51a, that is, the upper duct member 49a has a plurality of protrusions. By forming, the precision of the moldability of the wall that blocks the cool air between the ducts can be improved.

また、冷蔵室送風ダクト４８ａや切替室送風ダクト４８ｂや冷蔵室帰還ダクト５１ａの第１区画壁４１や第２区画壁４２と部材間の連結部は、それぞれのダクト間口周辺をシール部材７９によってシールすることにより部品間連結部の隙発生を防止することができる。 Further, the connecting portion between the first compartment wall 41 and the second compartment wall 42 of the refrigerating room air duct 48a, the switching room air duct 48b, the refrigerating room return duct 51a and the member is sealed by a seal member 79 around each duct opening. By doing so, it is possible to prevent a gap from being generated in the connecting part between the parts.

本発明においては、ある程度の長さを持った一本のシール部材７９をダクト間口に沿って取付けとしたが、穴を開けた一体のシール部材を取付けるとしてもよい。このシール部材７９を取付けるシール面は、シール部材が隙なく取付けができ、冷気が漏れるのを防止するために、取付け面には段差がないことが望ましい。 In the present invention, one seal member 79 having a certain length is attached along the duct opening, but an integral seal member having a hole may be attached. It is desirable that the sealing surface to which the sealing member 79 is attached has no step on the mounting surface so that the sealing member can be mounted without a gap and cold air leaks out.

通常、発泡スチロールの成型における突き出し部７８は、応力が集中するために、その部分において周辺の面よりも凹み部が発生する。突き出し部７８ａや突き出し部７８ｂを、ダクト間の冷気を遮断する壁の成型性の精度向上を行うためにダクト間に設ける時、ダクト間にも凹み部が発生する。シール部材７９が取付けられるシール面が、突き出し部７８ａや突き出し部７８ｂによる凹み部で分断され、シール部材７９とダクト間口間に隙が発生することを防止するため、突き出し部７８ａや突き出し部７８ｂはダクト間口に対して３ｍｍ以上の平面部の確保を行う。 Usually, in the protruding portion 78 in the molding of the polystyrene foam, a stress is concentrated, so that a recessed portion is generated in that portion rather than the peripheral surface. When the protruding portions 78a and the protruding portions 78b are provided between the ducts in order to improve the accuracy of the moldability of the walls that block the cool air between the ducts, a recessed portion is also generated between the ducts. In order to prevent the sealing surface to which the seal member 79 is attached from being cut off by the recesses of the protruding portion 78a and the protruding portion 78b, and the gap between the sealing member 79 and the duct opening is prevented, the protruding portion 78a and the protruding portion 78b are A flat part of 3 mm or more is secured with respect to the duct opening.

また下部ダクト部材４９ｂにおいては、突き出し部７８をシール部を避けて設けることが困難であるため、突き出し部７８ｃは切替室帰還ダクト５１ｂ内に、突き出し部７８ｄは冷蔵室切替室合流送風ダクト４８ｃ内に設けている。これにより、シール面に段差が発生することを抑制し、さらにダクトの経路を阻害することなく構成することができる。 Further, in the lower duct member 49b, it is difficult to provide the protruding portion 78 so as to avoid the seal portion. Therefore, the protruding portion 78c is in the switching chamber return duct 51b, and the protruding portion 78d is in the refrigerating room switching chamber merging air duct 48c. Provided. Thereby, it can suppress that generation | occurrence | production of a level | step difference in a sealing surface, and also can comprise, without inhibiting the path | route of a duct.

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は冷気戻り通路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、冷気戻り通路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 cold air return passage 71. However, if the opening area on the downstream side of the cold air return passage 71 can be secured, it may be formed to extend to the downstream portion. .

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６２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 discharge port 62 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の上面開口部より高い位置に設けた切替室の吐出口３６ａから冷気を吐出し、上部引出しケース６９内に冷気を導入し、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。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。 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. The cool air is discharged from the discharge port 36a of the switching chamber provided at a position higher than the upper surface opening of the upper discharge case 69, the cool air is introduced into the upper drawer case 69, and the discharge port provided at a position higher than the upper surface opening of the lower drawer case 70 The cool air is discharged from 36 b, and the back wall of the upper drawer case 69 acts as a guide for regulating the flow of the cool air to introduce the cool air into the lower drawer case 70. 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、冷気戻り通路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 also a possibility that the condensed water will flow in the refrigerating room return duct 51 a and freeze in the cold air 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、ヒータ熱で冷気戻り通路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 cool air return passage 71 can be heated by the 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
４１第１区画壁
４４冷却器
４５カバーコイル
４６ファン
４７除霜ヒータ
４８送風ダクト
４８ａ冷蔵室送風ダクト
４８ｂ切替室送風ダクト
４９ダクト装置
５０ダンパ装置
５１ａ冷蔵室帰還ダクト
５１ｂ切替室帰還ダクト
５８冷蔵室帰還連通口
５９切替室帰還連通口
７１冷気戻り通路
７６分流ダクト
７８突き出し部
７９シール部材 DESCRIPTION OF SYMBOLS 30 Refrigerator 35 Refrigeration room 36 Switching room 37 Freezing room 41 1st division wall 44 Cooler 45 Cover coil 46 Fan 47 Defrost heater 48 Air blow duct 48a Refrigeration room air duct 48b Switching room air duct 49 Duct device 50 Damper device 51a Refrigeration room Return duct 51b Switching chamber return duct 58 Refrigerating chamber return communication port 59 Switching chamber return communication port 71 Cold air return passage 76 Shunt flow duct 78 Projection portion 79 Seal member

Claims

上部に冷蔵室と下部に冷凍室、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を有する冷却室があり、前記ファンによって前記冷蔵室へ冷気を送風する冷蔵室送風ダクトと、前記冷蔵室内に吐出された冷気を前記冷却器に帰還させる冷蔵室帰還ダクトとを有するダクト装置とを備えた冷蔵庫において、前記ダクト装置は上部ダクト部材と下部ダクト部材とを上下方向でシールするシール接続部によって接続したことを特徴とする冷蔵庫。 Cooling having a refrigerator compartment at the top, a freezer compartment at the bottom, a cooler for generating cool air behind the freezer compartment, and a fan for forcibly blowing the generated cool air to the chambers arranged at the top of the cooler Refrigerator having a room, and a duct device having a refrigeration room air duct that sends cold air to the refrigeration room by the fan, and a refrigeration room return duct that returns the cold air discharged into the refrigeration room to the cooler The refrigerator is characterized in that the duct device is connected to the upper duct member and the lower duct member by a seal connecting portion for sealing in the vertical direction.

冷蔵室への冷気量を調節するダンパー装置は上部ダクト部材または下部ダクト部材内に埋設したことを特徴とする請求項１の冷蔵庫。 2. The refrigerator according to claim 1, wherein the damper device for adjusting the amount of cold air to the refrigerator compartment is embedded in the upper duct member or the lower duct member.

上部ダクト部材と下部ダクト部材の外周部は互いにシール接続部に向かって、接続部の断面が小さくなるように傾斜構造となっていることを特徴とする請求項１記載の冷蔵庫。 2. The refrigerator according to claim 1, wherein the outer peripheral portions of the upper duct member and the lower duct member have an inclined structure such that a cross section of the connecting portion becomes smaller toward the seal connecting portion.

機能部品に配線される電気配線部と、前記電気配線部を収納する配線収納部とを備えた冷蔵庫において、前記配線収納部は断熱材で成形されたダクト装置に凹部を形成して収納したことを特徴とする請求項１の冷蔵庫。 In a refrigerator having an electrical wiring portion wired to a functional component and a wiring storage portion for storing the electrical wiring portion, the wiring storage portion is stored in a duct device formed of a heat insulating material by forming a recess. The refrigerator according to claim 1.

上下ダクト部材は金型成型において、形成された送風ダクト間に突き出し部を設けたことを特徴とする請求項１の冷蔵庫。 The refrigerator according to claim 1, wherein the upper and lower duct members are provided with a protruding portion between the formed air ducts in mold molding.

上下ダクト部材は金型成型において、形成された送風ダクト内に突き出し部を設けたことを特徴とする請求項１の冷蔵庫。 The refrigerator according to claim 1, wherein the upper and lower duct members are provided with a protruding portion in the formed air duct in die molding.