JP2015206503A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator excellently storing storage food by solving dew condensation in a high-temperature storage chamber.SOLUTION: A bottom edge of a vegetable chamber cold air inlet port 44 is installed higher than a bottom edge height of a cooling fan 19 so as to inhibit cool air flowing backward from a vegetable chamber cold air inlet port 44 from flowing into a vegetable chamber 8. Consequently, the vegetable chamber 8 is inhibited from being locally cooled by reverse flow cool air, and dew condensation, freezing and super cooling in the vegetable chamber 8 are prevented so as to enlarge a cooler for generating cool air and provide a refrigerator of a large capacity while preventing deterioration of stored vegetables.

Description

本発明は冷凍室と冷蔵室にまたがって冷却室を設けた冷蔵庫に関するものである。   The present invention relates to a refrigerator provided with a cooling room across a freezing room and a refrigerating room.

一般に家庭用冷蔵庫は、冷蔵庫本体内に温度帯域の異なる複数の貯蔵室、例えば、冷蔵室、野菜室、冷凍室を設けて構成してある。そして、このような複数の貯蔵室を有する冷蔵庫の中には、ユーザが最も使用しやすい冷蔵庫本体の上下略中央部分に野菜室を配置したものが見られる（例えば、特許文献１参照）。   Generally, a household refrigerator is configured by providing a plurality of storage rooms having different temperature bands, for example, a refrigerator room, a vegetable room, and a freezer room, in the refrigerator body. And in the refrigerator which has such a some storage room, what has arrange | positioned the vegetable room in the upper-lower approximate center part of the refrigerator main body which a user can use most easily is seen (for example, refer patent document 1).

図２１は特許文献１記載の冷蔵庫の縦断面図、図２２は冷蔵庫背面の概略構成を示す正面断面図を示す。冷蔵庫本体１００の上部に冷蔵室１０１、下部に冷凍室１０２を設け、これら両室の間となる冷蔵庫本１００の上下略中央部分に野菜室１０３が配置してある。そして冷蔵庫本体１００の冷凍室１０２と野菜室１０３とにまたがってその背面に冷却室１０４を設け、この冷却室１０４に冷却器１０５と冷却ファン１０６を配置して、当該冷却器１０５で生成した冷気を前記冷却ファン１０６により冷蔵室１０１、野菜室１０３、冷凍室１０２に供給し循環させ、これら各室に貯蔵されている食品を冷却保存するようになっている。なお、上記野菜室１０１は冷蔵室１０４を冷却した後の冷気が供給されて野菜室内に収納した野菜を冷却保存するようになっている。野菜室１０３に導かれた冷気は収納ケース２０２，２０４の周囲を通過して後、戻り口を介して戻り通路５１２から冷媒循環系へ戻される。   FIG. 21 is a longitudinal sectional view of the refrigerator described in Patent Document 1, and FIG. 22 is a front sectional view showing a schematic configuration of the rear surface of the refrigerator. A refrigerator compartment 101 is provided in the upper part of the refrigerator main body 100, and a freezer compartment 102 is provided in the lower part, and a vegetable compartment 103 is arranged at a substantially upper and lower central part of the refrigerator book 100 between these two rooms. A cooling chamber 104 is provided on the back of the refrigerator body 100 across the freezer compartment 102 and the vegetable compartment 103. A cooler 105 and a cooling fan 106 are arranged in the cooling chamber 104, and the cool air generated by the cooler 105 is provided. Is supplied to the refrigerator compartment 101, the vegetable compartment 103, and the freezer compartment 102 by the cooling fan 106 and circulated, and the food stored in these compartments is cooled and stored. The vegetable compartment 101 is supplied with cold air after cooling the refrigerator compartment 104 and cools and preserves the vegetables stored in the vegetable compartment. The cold air guided to the vegetable compartment 103 passes around the storage cases 202 and 204, and then returns to the refrigerant circulation system from the return passage 512 via the return port.

特開平９−１１３１０９号公報JP-A-9-113109

上記特許文献１に記載されている冷蔵庫、すなわち冷凍室１０２が冷蔵庫本体１００の最下段に配置されている冷蔵庫は、上下中央のもっとも出し入れしやすい貯蔵室に、保存期間が短く使用頻度の高い野菜などの冷蔵食品を保存できるため重宝されている。   The refrigerator described in Patent Document 1, that is, the refrigerator in which the freezer compartment 102 is arranged at the lowermost stage of the refrigerator main body 100 is a vegetable that has a short storage period and a high frequency of use in the most easily accessible storage room at the top and bottom. It is useful because it can store refrigerated foods.

しかしながら、このような冷蔵庫は、野菜室１０３の背面にも冷却室１０４が位置するため、冷却室内の冷気が野菜室内へ流れ込み、野菜室内に結露が生じたり、野菜室内を凍結させたりすることがあり、そのような場合この中に収納している野菜等を劣化させてしまうという課題があった。   However, in such a refrigerator, since the cooling room 104 is also located on the back of the vegetable room 103, the cold air in the cooling room flows into the vegetable room, causing condensation in the vegetable room or freezing the vegetable room. In such a case, there is a problem that the vegetables and the like stored therein are deteriorated.

特に、冷蔵庫本体１００の最下段に冷凍室１０２が設けてあるボトムフリーザタイプの冷蔵庫は、野菜室１０３は戻り通路５１２によって冷却室１０４と直接連通しているため、冷却ファン１０６が停止し冷却室１０４内が負圧でなくなる際には冷却室１０４内の冷気が野菜室１０３へ向かって戻り通路５１２を逆流してくることにより、戻り口周辺が冷凍温度になり野菜室内に結露や凍結が発生して野菜等を劣化させてしまうことが起こりやすかった。   In particular, in the bottom freezer type refrigerator in which the freezer compartment 102 is provided at the lowermost stage of the refrigerator main body 100, the vegetable fan 103 is in direct communication with the cooling chamber 104 through the return passage 512. When the inside of 104 becomes no negative pressure, the cold air in the cooling chamber 104 flows back through the return passage 512 toward the vegetable chamber 103, and the vicinity of the return port becomes a freezing temperature, causing condensation and freezing in the vegetable chamber. And it was easy to happen that it deteriorated vegetables etc.

この結露問題は、特開平１１−１１８３１４号公報に開示されているように冷却室を冷凍室の背面のみに設けて野菜室の背面部分には位置させないようにすることによって解決することが考えられる。しかしながら、このような構成にすると、冷却室に設ける冷却器の大きさが限定されて冷却能力に制約が生じ、大能力の大型冷蔵庫には応用できず、よっ
て大型冷蔵庫では冷却室からの冷輻射で生じる結露による野菜劣化問題を解消することができないことになる。すなわち、この結露問題は、冷却室を大きくして冷却室１０４が野菜室背面部分にまで位置することになる大型の冷蔵庫においては避けがたい問題となっていた。 It is conceivable that this condensation problem can be solved by providing a cooling chamber only on the back surface of the freezer compartment and not positioning it on the back portion of the vegetable compartment as disclosed in JP-A-11-118314. . However, with such a configuration, the size of the cooler provided in the cooling chamber is limited and the cooling capacity is limited, so that it cannot be applied to a large-capacity large refrigerator. Therefore, the problem of vegetable deterioration due to dew condensation caused by dehydration cannot be solved. That is, this condensation problem has been an unavoidable problem in a large refrigerator in which the cooling chamber is enlarged and the cooling chamber 104 is located up to the rear portion of the vegetable room.

本発明はこのような点に鑑みてなしたもので、冷凍能力の大きな大型の冷蔵庫であっても冷蔵温度帯の貯蔵室内での結露を解消して貯蔵食品等を良好に冷却保存できる冷蔵庫を提供することを目的としたものである。   The present invention has been made in view of such points, and a refrigerator capable of eliminating stored dew in a storage room in a refrigerated temperature zone and cooling and storing stored foods well even for a large refrigerator having a large refrigerating capacity. It is intended to provide.

本発明は、上記従来の課題を解決するために、冷気を生成する冷却器と、前記冷却器で生成された冷気を強制的に循環させる冷却ファンと、前記冷却器および冷却ファンとを収める冷却室と、前記冷却室の一部を背面に備える低温貯蔵室と、前記低温貯蔵室の上方に前記低温貯蔵室より高い温度に保たれた少なくとも一つの高温貯蔵室と、前記高温貯蔵室と前記冷却室を連通する高温戻り通路を備える冷蔵庫において、前記高温戻り通路に設けた開口部は前記高温貯蔵室と前記高温戻り通路とを連通し、前記開口部の下端は前記冷却ファンの下端よりも上方にあることを特徴とする冷蔵庫である。   In order to solve the above-described conventional problems, the present invention provides a cooler that generates cool air, a cooling fan that forcibly circulates the cool air generated by the cooler, and cooling that contains the cooler and the cooling fan. A room, a low-temperature storage room provided with a part of the cooling room on the back surface, at least one high-temperature storage room maintained at a higher temperature than the low-temperature storage room above the low-temperature storage room, the high-temperature storage room, and the In a refrigerator including a high temperature return passage communicating with a cooling chamber, an opening provided in the high temperature return passage communicates the high temperature storage chamber and the high temperature return passage, and a lower end of the opening is lower than a lower end of the cooling fan. It is a refrigerator characterized by being above.

これにより、この冷蔵庫では冷却ファン高さまで逆流する冷凍温度帯の冷気が開口部を通り高温貯蔵室へ流れ込むことを抑制することができる。従って高温貯蔵室内の結露発生を防止することができるとともに、この結露発生を防止しつつ冷気生成用の冷却器を大型化して大能力の冷蔵庫にも対応することができる。   Thereby, in this refrigerator, it can suppress that the cold air | coolant of the freezing temperature zone which flows back to the cooling fan height flows into the high temperature storage room through an opening part. Therefore, it is possible to prevent the occurrence of condensation in the high-temperature storage chamber, and it is possible to cope with a large-capacity refrigerator by increasing the size of the cooler for generating cold air while preventing the occurrence of condensation.

本発明の冷蔵庫は、冷却能力が大きな冷蔵庫であっても高温貯蔵室内の結露発生を抑制し、良好な状態で貯蔵食品を冷却保存することができ、信頼性の高い冷蔵庫とすることができる。   Even if the refrigerator of the present invention is a refrigerator having a large cooling capacity, it is possible to suppress the occurrence of dew condensation in the high-temperature storage chamber, to cool and store stored foods in a good state, and to make a highly reliable refrigerator.

本発明の実施の形態１における冷蔵庫の正面図Front view of the refrigerator in Embodiment 1 of the present invention 同実施の形態１における冷蔵庫の扉を開いた時の正面図Front view when opening the refrigerator door in the first embodiment 同実施の形態１における冷蔵庫を示す図２のＡ−Ａ断面図2 is a cross-sectional view taken along line AA in FIG. 2 showing the refrigerator according to the first embodiment. 同実施の形態１における冷蔵庫を示す図２のＢ−Ｂ断面図BB sectional drawing of FIG. 2 which shows the refrigerator in Embodiment 1 同実施の形態１における冷蔵庫の半裁斜視図Half-cut perspective view of the refrigerator in the first embodiment 同実施の形態１における冷蔵庫の冷気流れを説明するための概略断面図Schematic cross-sectional view for explaining the cold air flow of the refrigerator in the first embodiment 同実施の形態１における冷蔵庫の冷気流れを説明する概略正面図Schematic front view for explaining the cold air flow of the refrigerator in the first embodiment 同実施の形態１における冷蔵庫の冷却室背面部分の冷気流れを説明する斜視図The perspective view explaining the cool air flow of the cooling chamber back surface part of the refrigerator in Embodiment 1 同実施の形態１における冷蔵庫を示す図３の要部拡大断面図The principal part expanded sectional view of FIG. 3 which shows the refrigerator in Embodiment 1 同図９における冷気流れを説明するための概略断面図Schematic cross-sectional view for explaining the cold air flow in FIG. 同実施の形態１における冷蔵庫を示す図４の要部拡大断面図The principal part expanded sectional view of FIG. 4 which shows the refrigerator in Embodiment 1 同図１１における冷気流れを説明するための概略断面図Schematic sectional view for explaining the cold air flow in FIG. 同実施の形態１における冷蔵庫の野菜室と冷凍室を示す拡大正面図The enlarged front view which shows the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 野菜室の背面壁部分を構成する奥面仕切壁ブロックの斜視図Perspective view of the rear partition wall block that constitutes the back wall part of the vegetable room 同図１４に示す野菜室の背面壁部分を構成する奥面仕切壁ブロックの分解斜視図FIG. 14 is an exploded perspective view of the rear partition wall block constituting the back wall portion of the vegetable compartment shown in FIG. 同図１５に示すＣ部詳細図Detailed view of part C shown in FIG. 同実施の形態１における冷蔵庫の貯蔵室と野菜室を仕切る仕切板と冷却ファンの斜視図The perspective view of the partition plate and cooling fan which partition the storage room and vegetable room of the refrigerator in Embodiment 1 同図１７における仕切板と冷却ファンの分解斜視図17 is an exploded perspective view of the partition plate and the cooling fan in FIG. 同実施の形態１における冷蔵庫の野菜収納ケースを示す斜視図The perspective view which shows the vegetable storage case of the refrigerator in Embodiment 1 同実施の形態１における冷蔵庫の制御ブロック図Control block diagram of the refrigerator in the first embodiment 従来の冷蔵庫の概略断面図Schematic sectional view of a conventional refrigerator 従来の冷蔵庫の冷蔵庫背面の概略構成を示す正面断面図Front sectional view showing a schematic configuration of the refrigerator back of a conventional refrigerator

第１の発明は、冷気を生成する冷却器と、前記冷却器で生成された冷気を強制的に循環させる冷却ファンと、前記冷却器および冷却ファンとを収める冷却室と、前記冷却室の一部を背面に備える低温貯蔵室と、前記低温貯蔵室の上方に前記低温貯蔵室より高い温度に保たれた少なくとも一つの高温貯蔵室と、前記高温貯蔵室と前記冷却室を連通する高温戻り通路を備える冷蔵庫において、前記高温戻り通路に設けた開口部は前記高温貯蔵室と前記高温戻り通路とを連通し、前記開口部の下端は前記冷却ファンの下端よりも上方にあることを特徴とする。   According to a first aspect of the present invention, there is provided a cooler that generates cool air, a cooling fan that forcibly circulates the cool air generated by the cooler, a cooling chamber that houses the cooler and the cooling fan, and one of the cooling chambers A low-temperature storage chamber having a rear portion, at least one high-temperature storage chamber maintained above the low-temperature storage chamber above the low-temperature storage chamber, and a high-temperature return passage communicating the high-temperature storage chamber and the cooling chamber The opening provided in the high temperature return passage communicates the high temperature storage chamber and the high temperature return passage, and the lower end of the opening is above the lower end of the cooling fan. .

これにより、この冷蔵庫では冷却ファン高さまで逆流する冷凍温度帯の冷気が開口部を通り高温貯蔵室へ流れ込むことを抑制することができる。従って高温貯蔵室内の結露発生を防止することができるとともに、この結露発生を防止しつつ冷気生成用の冷却器を大型化することもできる。   Thereby, in this refrigerator, it can suppress that the cold air | coolant of the freezing temperature zone which flows back to the cooling fan height flows into the high temperature storage room through an opening part. Accordingly, it is possible to prevent the occurrence of condensation in the high temperature storage chamber, and it is possible to increase the size of the cooler for generating cold air while preventing the occurrence of condensation.

第２の発明は、第１の発明において、前記高温戻り通路は前記高温貯蔵室側に水切り形状を有する構成としてある。   In a second aspect based on the first aspect, the high temperature return passage has a draining shape on the high temperature storage chamber side.

これにより、高温戻り通路内に逆流した冷気により高温戻り通路の高温貯蔵室側の表面に結露が生じた際に結露の高温貯蔵室内への流出を防ぐことができるため貯蔵食品等の劣化を防止することができる。   This prevents dew condensation from flowing out into the high-temperature storage chamber when condensation occurs on the surface of the high-temperature return passage on the side of the high-temperature storage chamber due to the cold air flowing back into the high-temperature return passage, preventing deterioration of stored foods, etc. can do.

第３の発明は、第１〜第２の発明において、高温戻り通路は少なくとも一部を断熱部材により構成されている。   According to a third invention, in the first to second inventions, at least a part of the high temperature return passage is constituted by a heat insulating member.

これにより、高温戻り通路内に逆流した冷気により高温戻り通路表面の特に開口部周辺に結露が発生することを抑制できるため貯蔵食品等の劣化を防止することができる。   Thereby, since it can suppress that dew condensation generate | occur | produces especially in the periphery of an opening part of the surface of a high temperature return channel | path by the cold air which flowed back into the high temperature return channel | path, deterioration of stored food etc. can be prevented.

第４の発明は、第１〜第３の発明において、高温貯蔵室用ファンを前記開口部の投影面内に備える構成としてある。   According to a fourth invention, in the first to third inventions, a high-temperature storage chamber fan is provided in the projection plane of the opening.

これにより、高温貯蔵室ファンの風路面積を拡大し風路抵抗を小さくすることができるため高温貯蔵室ファンの風量を増加させ高温貯蔵室内の均温化を促進すると共に、高温貯蔵室内の冷気の淀みを低減することができるため高温貯蔵室庫内の結露を抑制することができ貯蔵食品等の劣化を防止することができる。   As a result, the air passage area of the high-temperature storage room fan can be increased and the air passage resistance can be reduced, so that the air volume of the high-temperature storage room fan is increased to promote temperature equalization in the high-temperature storage room, and the cold air in the high-temperature storage room is cooled. Therefore, it is possible to reduce condensation in the high-temperature storage chamber and to prevent deterioration of stored foods.

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。尚、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

（実施の形態１）
図１は本発明の実施の形態１における冷蔵庫の正面図、図２は同実施の形態１における冷蔵庫の扉を開いた時の正面図、図３は同実施の形態１における冷蔵庫を示す図２のＡ−Ａ断面図、図４は同実施の形態１における冷蔵庫を示す図２のＢ−Ｂ断面図、図５は同実施の形態１における冷蔵庫の半裁斜視図、図６は同実施の形態１における冷蔵庫の冷気流れを説明するための概略断面図、図７は同実施の形態１における冷蔵庫の冷気流れを説明する概略正面図、図８は同実施の形態１における冷蔵庫の冷却室背面部分の冷気流れを説
明する斜視図、図９は同実施の形態１における冷蔵庫を示す図３の要部拡大断面図、図１０は同図９における冷気流れを説明するための概略断面図、図１１は同実施の形態１における冷蔵庫を示す図４の要部拡大断面図、図１２は同図１１における冷気流れを説明するための概略断面図、図１３は同実施の形態１における冷蔵庫の野菜室と冷凍室を示す拡大正面図、図１４は野菜室の背面壁部分を構成する奥面仕切壁ブロックの斜視図、図１５は同図１４に示す野菜室の背面壁部分を構成する奥面仕切壁ブロックの分解斜視図、図１６は図１５に示すＣ部詳細図、図１７は同実施の形態１における冷蔵庫の貯蔵室と野菜室を仕切る仕切板と冷却ファンの斜視図、図１８は同図１７における仕切板と冷却ファンの分解斜視図、図１９は同実施の形態１における冷蔵庫の野菜収納ケースを示す斜視図、図２０は同実施の形態１における冷蔵庫の制御ブロック図である。 (Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view when the door of the refrigerator according to Embodiment 1 is opened, and FIG. 3 is a diagram illustrating the refrigerator according to Embodiment 1. FIG. 4 is a sectional view taken along the line BB in FIG. 2 showing the refrigerator in the first embodiment, FIG. 5 is a half perspective view of the refrigerator in the first embodiment, and FIG. 6 is the first embodiment. 7 is a schematic cross-sectional view for explaining the cold air flow of the refrigerator in FIG. 1, FIG. 7 is a schematic front view for explaining the cold air flow of the refrigerator in the first embodiment, and FIG. FIG. 9 is an enlarged cross-sectional view of the main part of FIG. 3 showing the refrigerator in the first embodiment, and FIG. 10 is a schematic cross-sectional view for explaining the cold air flow in FIG. FIG. 4 shows the main part of FIG. 4 showing the refrigerator in the first embodiment. Sectional drawing, FIG. 12 is a schematic sectional view for explaining the cold air flow in FIG. 11, FIG. 13 is an enlarged front view showing a vegetable room and a freezing room of the refrigerator in the first embodiment, and FIG. FIG. 15 is an exploded perspective view of the rear partition wall block constituting the back wall portion of the vegetable compartment shown in FIG. 14, and FIG. 16 is a C portion shown in FIG. FIG. 17 is a perspective view of a partition plate and a cooling fan for partitioning the refrigerator storage room and the vegetable compartment in the first embodiment, FIG. 18 is an exploded perspective view of the partition plate and the cooling fan in FIG. 17, and FIG. The perspective view which shows the vegetable storage case of the refrigerator in the same Embodiment 1, FIG. 20 is the control block diagram of the refrigerator in the same Embodiment 1. FIG.

まず、冷蔵庫の全体構成について説明する。   First, the whole structure of a refrigerator is demonstrated.

＜冷蔵庫本体構成＞
図１〜図６において、本実施の形態に係る冷蔵庫は、前方を開口した冷蔵庫本体１を備え、この冷蔵庫本体１は、図３等に示すように主に鋼板を用いた外箱２と、ＡＢＳなどの硬質樹脂で成型された内箱３と、前記外箱２と内箱３との間に充填された硬質発泡ウレタン等の発泡断熱材４とから構成されている。冷蔵庫本体１は、仕切板５．６によって複数の貯蔵室に区分されており、冷蔵庫本体１の最上部には冷蔵室７、その冷蔵室７の下部に野菜室８、そして最下部に冷凍室９が配置されていて、真ん中野菜室タイプの冷蔵庫となっている。前記各貯蔵室の前面開口部は、扉１０、扉１１、扉１２によって開閉可能に閉塞されている。 <Fridge body configuration>
1-6, the refrigerator which concerns on this Embodiment is equipped with the refrigerator main body 1 which opened the front, This refrigerator main body 1 has the outer case 2 mainly using the steel plate as shown in FIG. The inner box 3 is made of a hard resin such as ABS, and a foam heat insulating material 4 such as hard foam urethane filled between the outer box 2 and the inner box 3. The refrigerator main body 1 is divided into a plurality of storage rooms by a partition plate 5.6. The refrigerator main body 1 has a refrigerator compartment 7 at the top, a vegetable compartment 8 at the bottom of the refrigerator compartment 7, and a freezer compartment at the bottom. 9 is arranged, and it is a middle vegetable room type refrigerator. The front opening of each storage chamber is closed by a door 10, a door 11, and a door 12 so as to be opened and closed.

冷蔵庫本体１の上部後方領域には機械室１４が設けられている。機械室１４には、圧縮機１５、水分除去を行うドライヤ（図示せず）等の冷凍サイクルの高圧側構成部品が収容されている。   A machine room 14 is provided in the upper rear region of the refrigerator body 1. The machine room 14 accommodates high-pressure components of the refrigeration cycle such as the compressor 15 and a dryer (not shown) for removing moisture.

また、冷蔵庫本体１の背面には冷気を生成する冷却室１６が設けられている。この冷却室１６は冷凍室９の背面から野菜室８の下部背面に渡って形成されており、野菜室８との間は発泡スチロール等によって断熱性を持たせた奥面仕切壁体１７を設けて断熱仕切りしている。   In addition, a cooling chamber 16 that generates cool air is provided on the back surface of the refrigerator body 1. The cooling chamber 16 is formed from the back surface of the freezing chamber 9 to the lower back surface of the vegetable chamber 8, and a back partition wall body 17 is provided between the vegetable chamber 8 and a heat insulating material such as polystyrene foam. Insulated partitions.

冷却室１６内には冷却器１８が配設されており、冷却器１８の上部には冷却ファン１９が配置されている。前記冷却ファン１９は、冷却器１８により冷却された冷気を冷蔵室７、野菜室８、冷凍室９に強制循環させて各室を冷却するものである。例えば、冷蔵室７は食品が凍らない程度の温度通常１℃〜５℃に冷却し、野菜室８は冷蔵室７と同等もしくは若干高めの温度２℃〜７℃に冷却している。また、冷凍室９は冷凍保存のために通常−２２℃〜−１５℃の冷凍温度帯に冷却しており、場合によっては冷凍保存状態向上のために、例えば−３０℃や−２５℃の低温に冷却することもある。   A cooler 18 is disposed in the cooling chamber 16, and a cooling fan 19 is disposed above the cooler 18. The cooling fan 19 forcibly circulates the cold air cooled by the cooler 18 to the refrigerating room 7, the vegetable room 8, and the freezing room 9 to cool each room. For example, the refrigerator compartment 7 is cooled to a temperature that does not freeze the food, usually 1 ° C. to 5 ° C., and the vegetable compartment 8 is cooled to a temperature 2 ° C. to 7 ° C. that is equal to or slightly higher than the refrigerator compartment 7. Further, the freezer compartment 9 is usually cooled to a freezing temperature range of −22 ° C. to −15 ° C. for frozen storage, and in some cases, for example, a low temperature of −30 ° C. or −25 ° C. to improve the frozen storage state. Sometimes it cools down.

上記冷却ファン１９は図１７に示すように野菜室８と冷凍室９とを仕切る仕切板６に組み付けてあり、この状態で冷却ファン１９は図９に示すように野菜室８の背面と対向する部分に位置し、野菜室８との間を仕切る奥面仕切壁体１７に向けて冷気を送風し、野菜室下部背面に強い冷輻射をもたらす。   The cooling fan 19 is assembled to a partition plate 6 that partitions the vegetable compartment 8 and the freezing compartment 9 as shown in FIG. 17, and in this state, the cooling fan 19 faces the back of the vegetable compartment 8 as shown in FIG. Cold air is blown toward the rear partition wall 17 that is located in the portion and partitions the vegetable compartment 8, thereby bringing strong cold radiation to the lower back of the vegetable compartment.

上記仕切板６と冷却ファン１９は図１８の分解斜視図に示すように構成されている。すなわち、仕切板６は上面部材６ａと下面部材６ｂとの間に発泡断熱材４（この図１８では図示せず）を充填して構成されていて、奥部側に開口２０が形成されている。この開口２０の上部に前記した冷却ファン１９が組み付けられており、下方には前記冷却室１６の冷却器１８が位置している。図中２４は開口２０の開口縁前方部分を覆う断熱性遮壁で、発
泡スチロール等で構成されており、その一側部片には仕切板６に設けられている冷気戻り通路用開口２５と対応する通路開口２６が形成されている。通路開口２６は冷気戻り通路用開口２５よりも小さく、仕切り板６上方から見たとき冷気戻り通路用開口２５の中に通路開口２６の４辺が見えるよう構成される。このとき冷気戻り通路用開口２５の縁から通路開口２６の縁までは１０ｍｍ以上あることが望ましい。また、仕切板６の冷気戻り通路用開口２５と反対側部分には冷凍室９に設けられる製氷装置への水供給用のタンク設置部２７が形成されている。 The partition plate 6 and the cooling fan 19 are configured as shown in an exploded perspective view of FIG. That is, the partition plate 6 is configured by filling the foam heat insulating material 4 (not shown in FIG. 18) between the upper surface member 6a and the lower surface member 6b, and an opening 20 is formed on the back side. . The cooling fan 19 is assembled to the upper part of the opening 20, and the cooler 18 of the cooling chamber 16 is located below. In the figure, reference numeral 24 denotes a heat insulating shielding wall covering the front portion of the opening edge of the opening 20 and is made of foamed polystyrene or the like, and one side piece thereof corresponds to the opening 25 for the cold air return passage provided in the partition plate 6. A passage opening 26 is formed. The passage opening 26 is smaller than the cold air return passage opening 25 and is configured such that the four sides of the passage opening 26 can be seen in the cold air return passage opening 25 when viewed from above the partition plate 6. At this time, the distance from the edge of the cold air return passage opening 25 to the edge of the passage opening 26 is preferably 10 mm or more. In addition, a tank installation portion 27 for supplying water to the ice making device provided in the freezer compartment 9 is formed on a portion of the partition plate 6 opposite to the cold air return passage opening 25.

また、前記冷却器１８の下部空間には、図９等に示すように冷却器１８やその周辺に付着する霜や氷を除霜する除霜ヒータ２８が配置されている。除霜ヒータ２８の下部には除霜時に生じる除霜水を受けるためのドレンパン２９が配置され、除霜水はドレンパン２９の最深部から図示しないドレンチューブを介して庫外の蒸発皿に排出するようになっている。   In the lower space of the cooler 18, a defrost heater 28 for defrosting the frost and ice adhering to the cooler 18 and its periphery is disposed as shown in FIG. A drain pan 29 for receiving defrost water generated at the time of defrosting is disposed below the defrost heater 28, and the defrost water is discharged from the deepest part of the drain pan 29 to an evaporation tray outside the chamber through a drain tube (not shown). It is like that.

次に冷気循環構成について説明する。   Next, the cold air circulation configuration will be described.

＜冷気循環通路構成＞
冷気を生成する冷却室１６は、図９等に示すように前記した奥面仕切壁体１７と冷蔵庫本体１との間に形成されている冷却室冷気搬送路３０に冷却ファン１９の下流が開口しており、この冷却室冷気搬送路３０を介して各室に冷気を送風する。 <Cooling air circulation path configuration>
As shown in FIG. 9 and the like, the cooling chamber 16 that generates the cold air has an opening downstream of the cooling fan 19 in the cooling chamber cold air conveyance path 30 formed between the rear partition wall body 17 and the refrigerator main body 1. Then, the cool air is blown into each chamber through the cooling chamber cool air conveyance path 30.

冷却室冷気搬送路３０の上部は図７、図８、図１０、特に図１０に示すように冷蔵室ダンパ３１を介して冷蔵室７の背面略中央部に形成されている冷蔵冷気往き通路３２と連通している。冷蔵冷気往き通路３２の側方には図７、図８に示すように冷蔵室７からの冷蔵冷気戻り通路３３が隣接設置されていて、その下部は野菜室８、冷却室１６に連通している。   The upper part of the cooling chamber cool air conveyance path 30 is a refrigerated cold air passage 32 formed at a substantially central portion of the back surface of the refrigeration chamber 7 through a refrigeration chamber damper 31 as shown in FIGS. Communicated with. As shown in FIGS. 7 and 8, a refrigerated cold air return passage 33 from the refrigeration chamber 7 is installed adjacent to the side of the refrigerated cold air passage 32, and the lower part thereof communicates with the vegetable compartment 8 and the cooling compartment 16. Yes.

冷蔵室７には図７に示すようにその奥壁上部適所に冷蔵冷気往き通路３２の冷蔵冷気入口３５が設けてあり、同奥壁下部適所には前記冷蔵冷気戻り通路３３へ開口する冷蔵冷気戻り口３６が設けられていて、冷却室１６からの冷気は冷蔵室ダンパ３１を介して冷蔵冷気往き通路３２に供給され、その冷蔵冷気入口３５から冷蔵室７に供給される。一方、冷蔵室冷却後の冷気は冷蔵冷気戻り口３６から冷蔵冷気戻り通路３３を介して野菜室８に供給され、かつ冷却室１６へと循環する。また、この冷蔵室７には後述するようにその下部にパーシャル室が設けられていて、当該パーシャル室には図８に示すようにパーシャル室ダンパ３１ａ、パーシャル室冷気往き通路３２ａ、パーシャル室冷気入口３５ａを介して供給されるようになっている。   As shown in FIG. 7, the refrigerating chamber 7 is provided with a refrigerating / cooling air inlet 35 of a refrigerating / refrigerating air passage 32 at an appropriate position above the rear wall, and the refrigerating / refrigerating air that opens to the refrigerating / refrigerating air return passage 33 is provided at a lower position on the inner wall. A return port 36 is provided, and the cold air from the cooling chamber 16 is supplied to the refrigerating / refrigerating air passage 32 via the refrigerating chamber damper 31, and is supplied from the refrigerating / refrigerating air inlet 35 to the refrigerating chamber 7. On the other hand, the cold air after cooling in the refrigerating room is supplied from the refrigerating cold air return port 36 to the vegetable room 8 through the refrigerating cold air return passage 33 and circulates to the cooling room 16. As will be described later, the refrigerating chamber 7 is provided with a partial chamber at the lower portion thereof. As shown in FIG. 8, the partial chamber has a partial chamber damper 31a, a partial chamber cold air passage 32a, and a partial chamber cold air inlet. It is supplied via 35a.

この実施の形態では、同図８から明らかなように、前記奥面仕切壁体１７と仕切板６の背面に、前記冷却室冷気搬送路３０と冷蔵冷気往き通路３２及びパーシャル室冷気往き通路３２ａとを連絡する往き通路３７と、冷蔵冷気戻り通路３３と野菜室８、冷却室１６とを連絡する戻り通路３８が形成されていて、前記冷蔵室ダンパ３１はこの往き通路３７に設けられている。   In this embodiment, as is clear from FIG. 8, the cooling chamber cold air conveyance path 30, the refrigerated cold air passage 32, and the partial chamber cold air passage 32 a are provided on the back surface of the rear partition wall body 17 and the partition plate 6. And a return passage 38 for connecting the refrigerated cold air return passage 33 to the vegetable compartment 8 and the cooling chamber 16. The refrigeration chamber damper 31 is provided in the forward passage 37. .

そして、前記冷蔵冷気往き通路３２と冷蔵冷気戻り通路３３との間に連通路３９が形成されていて、冷蔵冷気往き通路３２を流れる低温冷気の一部が冷蔵冷気戻り通路３３に混入するように構成されている。   A communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33 so that a part of the low temperature cold air flowing through the refrigerated cold air return passage 32 is mixed into the refrigerated cold air return passage 33. It is configured.

また、冷凍室９の背面には図８に示すように前記冷却室１６及び冷却器１８の側方を下向きに延びる冷気戻り通路４０が設けられており、この冷気戻り通路４０の上部が上記戻り通路３８を介して野菜室８に連通するとともにその下部が冷却室１６の下部近傍に開口
していて、前記野菜室８冷却後の冷気が冷気戻り通路４０を介してその下部開口から冷却室１６へと循環するように構成されている。 Further, as shown in FIG. 8, a cold air return passage 40 is provided on the back surface of the freezer compartment 9 so as to extend downward from the cooling chamber 16 and the cooler 18. The passage communicates with the vegetable compartment 8 through the passage 38 and the lower portion thereof is opened in the vicinity of the lower portion of the cooling chamber 16, and the cold air after cooling the vegetable compartment 8 passes through the cold air return passage 40 from the lower opening thereof to the cooling chamber 16. It is configured to circulate.

一方、冷凍室９は図１０に示すようにその背面壁体４１の上部に前記奥面仕切壁体１７背面の冷却室冷気搬送路３０下部に連通する冷凍冷気入口４２が、下部に前記冷却室１６の下部に開口する冷凍冷気戻り口４３が形成されていて、冷却室１６からの冷気が冷却室冷気搬送路３０下部から冷凍冷気入口４２を介して供給され、冷凍室冷却後の冷気が冷凍冷気戻り口４３を介して冷却室１６へと循環する。   On the other hand, as shown in FIG. 10, the freezer compartment 9 has a freezer cold air inlet 42 communicating with the lower part of the cooling room cold air conveying path 30 on the back of the rear partition wall 17 at the upper part of the rear wall 41 and the cooling room at the lower part. A freezing cold air return port 43 is formed in the lower portion of the cooling chamber 16, and the cold air from the cooling chamber 16 is supplied from the lower portion of the cooling chamber cold air conveyance path 30 through the freezing cold air inlet 42. It circulates to the cooling chamber 16 through the cold air return port 43.

＜野菜室構成＞
野菜室８は奥面仕切壁体１７により、後述する野菜収納ケース４８を備える貯蔵空間と冷却室冷気搬送路３０や冷却室１６などの冷気循環空間に分かれて構成される。 <Vegetable room configuration>
The vegetable compartment 8 is configured by the rear partition wall 17 so as to be divided into a storage space provided with a vegetable storage case 48 to be described later and a cold air circulation space such as the cooling chamber cold air conveyance path 30 and the cooling chamber 16.

図１５は上記奥面仕切壁体１７の分解斜視図である。奥面仕切壁体１７は前仕切板１７ａと発泡スチロールなどの断熱材で構成された中仕切板１７ｂと冷却室冷気搬送路３０に面した後仕切板（図示せず）とを重合させて構成される。本実施の形態では前記戻り通路３８は冷却室冷気搬送路３０の右側方に位置し、中仕切板１７ｂの右に突出した断熱突片１７ｃと内箱３の間に構成される。右壁は前仕切板１７ａにより構成されている。   FIG. 15 is an exploded perspective view of the rear partition wall body 17. The rear surface partition wall body 17 is configured by polymerizing a front partition plate 17a, a middle partition plate 17b made of a heat insulating material such as polystyrene foam, and a rear partition plate (not shown) facing the cooling chamber cool air conveyance path 30. The In the present embodiment, the return passage 38 is located on the right side of the cooling chamber cool air conveyance path 30 and is configured between the heat insulating protrusion 17c protruding to the right of the inner partition plate 17b and the inner box 3. The right wall is constituted by a front partition plate 17a.

断熱突片１７ｃは仕切板６内の断熱性遮壁２４に設けた通路開口２６の縁にウレタンフォーム（図示せず）等のシール材を介して当接し、冷気が隙間から漏れないように構成されている。   The heat insulating protrusion 17c is configured to abut against the edge of the passage opening 26 provided in the heat insulating shielding wall 24 in the partition plate 6 via a sealing material such as urethane foam (not shown) so that cold air does not leak from the gap. Has been.

野菜室８は図７、図１２に示すように奥壁左右いずれか一方寄り部分、この実施の形態では正面から見て右側部分の下部であって前記冷蔵冷気戻り通路３３からの戻り通路３８を構成する断熱突片１７ｃに開口した野菜室冷気入口４４が設けられ、この野菜冷気入口４４の略上方位置部分に前記戻り通路３８に開口して冷却室１６へとつながる野菜冷気戻り口４６が設けられている。野菜室冷気入口４４の下端は図８に示す通り冷却ファン１９の下端よりも高い位置に配置してある。ここで、冷却ファン１９の下端とはファンリングの開口部の下端を意図する。   As shown in FIGS. 7 and 12, the vegetable compartment 8 is a portion closer to one of the left and right sides of the back wall, in this embodiment, a lower portion of the right portion when viewed from the front, and a return passage 38 from the refrigerated cold air return passage 33. A vegetable room cold air inlet 44 opened in the heat insulating protrusion 17c is provided, and a vegetable cold air return port 46 opened to the return passage 38 and connected to the cooling chamber 16 is provided at a position substantially above the vegetable cold air inlet 44. It has been. The lower end of the vegetable room cold air inlet 44 is arranged at a position higher than the lower end of the cooling fan 19 as shown in FIG. Here, the lower end of the cooling fan 19 means the lower end of the opening of the fan ring.

図１６に示すように断熱突片１７ｃは野菜室冷気入口４４より下方には、右下がりの凸形状１７ｄを有し、凸形状１７ｄの先には戻り通路３８へ通じる切欠き１７ｅを有する。   As shown in FIG. 16, the heat insulating protrusion 17c has a convex shape 17d that descends to the right below the vegetable room cold air inlet 44, and a notch 17e that leads to the return passage 38 at the tip of the convex shape 17d.

さらにこの野菜室８には、特に図１２に示すように当該野菜室８背面の奥面仕切壁体１７を利用して前記冷気の戻り通路３８の前面位置に上下方向に野菜室通路部５０が縦設形成されている。この野菜室通路部５０はその上部が前記野菜冷気戻り口４６に連通し、下部は野菜冷気入口４４と連通していて、この野菜冷気入口４４と連通する部分にプロペラファン等からなる野菜室ファン５３が配置してある。   Furthermore, in this vegetable compartment 8, as shown in FIG. 12, a vegetable compartment passage section 50 is provided in the vertical direction at the front position of the cold air return passage 38 using the rear partition wall 17 on the back of the vegetable compartment 8. It is formed vertically. The vegetable chamber passage portion 50 has an upper portion communicating with the vegetable cold air return port 46 and a lower portion communicating with the vegetable cold air inlet 44, and a vegetable chamber fan comprising a propeller fan or the like at a portion communicating with the vegetable cold air inlet 44. 53 is arranged.

野菜室ファン５３は野菜室冷気入口４４の前方に位置し、前から見て野菜室ファン５３と野菜室冷気入口４４が重なるように設置される。なお、野菜室８の冷却量が大きく必要な場合は野菜室入口４４の開口面積を大きく、冷却量が小さくてよい場合は野菜室入口４４の開口面積を小さくすることが有効であるが、いずれの場合も野菜室入口４４の下端は野菜室ファン５３の上端より低い位置に設け、前後に重なるように設置する。   The vegetable room fan 53 is located in front of the vegetable room cold air inlet 44 and is installed so that the vegetable room fan 53 and the vegetable room cold air inlet 44 overlap each other when viewed from the front. In addition, when the amount of cooling of the vegetable compartment 8 is large, it is effective to increase the opening area of the vegetable compartment entrance 44, and when the amount of cooling may be small, it is effective to reduce the opening area of the vegetable compartment entrance 44. In this case, the lower end of the vegetable compartment entrance 44 is provided at a position lower than the upper end of the vegetable compartment fan 53, and is installed so as to overlap the front and rear.

さらにまた、この野菜室８には上記野菜室通路部５０と野菜冷気戻り口４６とにつながるよう野菜室上面に前方に向かって第一の通路４７ａが形成されていて、その前方部分には第一の野菜冷気吸込み口４７が設けられている。   Furthermore, the vegetable compartment 8 has a first passage 47a formed on the upper surface of the vegetable compartment so as to be connected to the vegetable compartment passage section 50 and the vegetable cold air return port 46. One vegetable cold air inlet 47 is provided.

加えてこの実施の形態の野菜室８には図１３、図１４等に示すようにその奥の面となる奥面仕切壁体１７の上部であって前記野菜冷気入口４４の対角位置となる部分、この実施の形態では左奥側上部に、第二の野菜冷気吸込み口５１が設けられており、この第二の野菜冷気吸込み口５１を備えた第二の通路５１ａも図１２に示すように前記野菜室通路部５０の上部と野菜冷気戻り口４６に連通している。   In addition, in the vegetable compartment 8 of this embodiment, as shown in FIG. 13, FIG. 14 and the like, it is the upper part of the rear partition wall body 17 which is the inner surface of the vegetable compartment 8 and is diagonally positioned with respect to the vegetable cold air inlet 44. In this embodiment, a second vegetable cold air suction port 51 is provided in the upper left side upper part in this embodiment, and a second passage 51a provided with the second vegetable cold air suction port 51 is also shown in FIG. In addition, the upper part of the vegetable compartment passage 50 and the vegetable cold air return port 46 communicate with each other.

図１５に示すとおり、野菜室通路部５０は前仕切板１７ａと中仕切板１７ｂとの間に形成されており、その上端部分５０ａは図１２に示すように前記野菜冷気戻り口４６に開口している。さらにこの野菜室通路部５０の下部には既に述べたように野菜室ファン５３が組み込まれており、その吹出口５４は野菜室８内に開口していて、野菜冷気入口４４からの冷気と第一の野菜冷気吸込み口４７及び第二の野菜冷気吸込み口５１からの野菜室冷気を野菜室８内に送風するようになっている。上記野菜室ファン５３の吹出口５４は後述する下段野菜収納ケース４９ａの後面に向かって開口しており、当該野菜室ファン５３と対向する前記下段野菜収納ケース４９ａの後下部は下方ほど前方に位置する傾斜面５５となっていて、野菜室ファン５３からの冷気が下段野菜収納ケース４９ａの下面空間へと集中的に流れる様に構成されている。   As shown in FIG. 15, the vegetable compartment passage portion 50 is formed between the front partition plate 17a and the middle partition plate 17b, and its upper end portion 50a opens to the vegetable cold air return port 46 as shown in FIG. ing. Further, as described above, the vegetable room fan 53 is incorporated in the lower part of the vegetable room passage section 50, and its outlet 54 is opened in the vegetable room 8, so that the cold air from the vegetable cold air inlet 44 and the The vegetable compartment cold air from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 is blown into the vegetable compartment 8. The air outlet 54 of the vegetable compartment fan 53 opens toward the rear surface of a lower vegetable storage case 49a, which will be described later, and the lower rear portion of the lower vegetable storage case 49a facing the vegetable compartment fan 53 is located forward in the lower part. It is configured so that the cold air from the vegetable compartment fan 53 intensively flows into the lower space of the lower vegetable storage case 49a.

なお、上記野菜室８には、図１１等に示すように野菜収納ケース４８が配置されており、この野菜収納ケース４８は扉１１のフレームに載置された下段野菜収納ケース４９ａと、下段野菜収納ケース４９ａの上に載置された上段野菜収納ケース４９ｂとから構成されている。そして上記野菜室８は上記野菜収納ケース４８とその下の仕切板６及び野菜室８の内周壁面との間に空間が設けられ、当該空間は前記野菜冷気入口４４からの冷気が流れる風路を構成している。   The vegetable compartment 8 is provided with a vegetable storage case 48 as shown in FIG. 11 and the like. The vegetable storage case 48 includes a lower vegetable storage case 49a placed on the frame of the door 11 and a lower vegetable. The upper vegetable storage case 49b is placed on the storage case 49a. The vegetable compartment 8 is provided with a space between the vegetable storage case 48, the partition plate 6 below and the inner peripheral wall surface of the vegetable compartment 8, and the space is an air passage through which the cold air from the vegetable cold air inlet 44 flows. Is configured.

また、上記野菜収納ケース４８の上段野菜収納ケース４９ｂの上部開口縁は野菜室８上部の仕切板６と近接した部分に位置するとともに前記野菜冷気入口４４より上方部分に位置していて、野菜冷気入口４４からの冷気が野菜収納ケース４８の上段野菜収納ケース４９ｂ及び下段野菜収納ケース４９ａ内に直接入り込むことがないように構成されている。上段野菜収納ケース４９ｂの上部開口にこれを閉塞する蓋を設けて冷気の野菜収納ケース４８内への侵入をより確実に防止するようにしてもよい。   In addition, the upper opening edge of the upper vegetable storage case 49b of the vegetable storage case 48 is located in a portion adjacent to the partition plate 6 in the upper portion of the vegetable compartment 8 and is located in an upper portion from the vegetable cold air inlet 44. The cool air from the entrance 44 is configured not to enter directly into the upper vegetable storage case 49b and the lower vegetable storage case 49a of the vegetable storage case 48. A lid that closes the upper vegetable storage case 49b may be provided at the upper opening of the upper vegetable storage case 49b to prevent cold air from entering the vegetable storage case 48 more reliably.

また、下段野菜収納ケース４９ａは図１９に示すようにケース仕切板５８によって左右に分割されており、前記野菜冷気入口４４と対向する側、この実施の形態では右側部分を一段深くしてペットボトルやパック等の非野菜収納部（以下、ペットボトル等収納部と称す）５９としてある。なお、このペットボトル等収納部５９は野菜室８内を前後に仕切ってその前側部分をペットボトル等収納部としてもよい。   Further, as shown in FIG. 19, the lower vegetable storage case 49a is divided into right and left by a case partition plate 58, and the side opposite to the vegetable cold air inlet 44, in this embodiment, the right side portion is made deeper by one step to make a plastic bottle. And a non-vegetable storage section 59 (hereinafter referred to as a storage section such as a plastic bottle). In addition, this container part 59 for PET bottles etc. is good also as dividing the inside of the vegetable compartment 8 back and forth, and making the front side part a container part etc. for PET bottles.

＜冷蔵室構成＞
冷蔵室７は図４等に示すように内部に複数の収納棚６０を有するとともに、準冷凍温度帯に冷却できるパーシャル室６１を備え、それぞれの適所に既に述べた冷蔵冷気入口３５及び冷蔵冷気戻り口３６（いずれも図７参照）が設けられている。そして、冷蔵室７の側壁適所には各室の庫内温度設定や製氷および急速冷却などの設定を行う操作部６２が配置されている。 <Refrigerator configuration>
As shown in FIG. 4 and the like, the refrigerator compartment 7 includes a plurality of storage shelves 60 and a partial chamber 61 that can be cooled to a semi-refrigeration temperature zone. A mouth 36 (both see FIG. 7) is provided. An operation unit 62 for setting the internal temperature of each room, ice making, rapid cooling, and the like is disposed at an appropriate side wall of the refrigerator compartment 7.

＜冷凍室構成＞
また。冷凍室９は既に図１０を用いて述べたようにその奥壁上部に前記奥面仕切壁体１７背面の冷却室冷気搬送路３０下部と連通する冷凍冷気入口４２が形成され、さらに奥壁下部に前記冷凍室９に連通する冷凍冷気戻り口４３が形成されている。そして構造図には図示していないが、冷却室１６から冷凍室９への通路の適所にも冷凍室ダンパが組み込まれている。なお、この冷凍室９にも、図４等に示すようにその扉１２のフレームに載置さ
れた冷凍室ケース６３が設けられており、更にその冷凍室ケース６３の上部には製氷装置６４が組み込まれている。 <Freezer configuration>
Also. As already described with reference to FIG. 10, the freezer compartment 9 is formed with a freezer cold air inlet 42 communicating with the lower part of the cooler compartment air passage 30 at the back of the rear partition wall body 17 at the upper part of the rear wall, and the lower part of the rear wall. A freezing cold air return port 43 communicating with the freezing chamber 9 is formed. Although not shown in the structural diagram, a freezer damper is also incorporated at an appropriate position in the passage from the cooling chamber 16 to the freezer compartment 9. The freezer compartment 9 is also provided with a freezer compartment 63 placed on the frame of the door 12 as shown in FIG. 4 and the like, and an ice making device 64 is provided above the freezer compartment 63. It has been incorporated.

次にこの冷蔵庫の制御構成について説明する。   Next, the control configuration of the refrigerator will be described.

＜制御構成＞
図２０は本実施の形態の冷蔵庫における制御ブロック図を示し、６５は冷蔵室温度検知手段、６６は野菜室温度検知手段、６７は冷凍室温度検知手段で、いずれもサーミスタで形成してあり、それぞれ冷蔵室７、野菜室８、冷凍室９の適所に設置されている。６８は冷蔵庫全体を統括制御する制御部で、マイクロコンピュータ等によって構成してあり、前記冷蔵室温度検知手段６５、冷凍室温度検知手段６７からの出力に基づきあらかじめ組み込まれた制御ソフトにしたがって冷蔵室ダンパ３１、冷凍室ダンパ３４を開閉制御するとともに、圧縮機１５、冷却ファン１９を駆動して各室を設定温度に制御する。さらにこの制御部６８は冷蔵室温度検知手段６５及び野菜室温度検知手段６６からの出力に基づき野菜室８の野菜室通路部５０に組み込んだ野菜室ファン５３の運転を制御するようになっている。具体的には冷蔵室温度検知手段６５及び野菜室温度検知手段６６が検出する温度がそれぞれの設定温度よりも高い温度をいずれか一方が検知すると野菜室ファン５３を駆動するようになっている。 <Control configuration>
FIG. 20 shows a control block diagram in the refrigerator of the present embodiment, 65 is a refrigerator temperature detecting means, 66 is a vegetable room temperature detecting means, 67 is a freezer temperature detecting means, both are formed of a thermistor, They are installed at appropriate places in the refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9, respectively. Reference numeral 68 denotes a control unit that performs overall control of the entire refrigerator. The control unit 68 is configured by a microcomputer or the like, and the refrigerator compartment according to control software built in advance based on outputs from the refrigerator compartment temperature detecting means 65 and the freezer compartment temperature detecting means 67. The damper 31 and freezer compartment damper 34 are controlled to open and close, and the compressor 15 and the cooling fan 19 are driven to control each chamber to a set temperature. Further, the controller 68 controls the operation of the vegetable compartment fan 53 incorporated in the vegetable compartment passage portion 50 of the vegetable compartment 8 based on outputs from the refrigerator compartment temperature detecting means 65 and the vegetable compartment temperature detecting means 66. . Specifically, the vegetable compartment fan 53 is driven when one of the temperatures detected by the refrigerator compartment temperature detecting means 65 and the vegetable compartment temperature detecting means 66 detects a temperature higher than the set temperature.

さらにまた、冷蔵室温度検知手段６５及び野菜室温度検知手段６６が検出する温度が常に低く、一定時間以上連続して冷蔵室ダンパ３４が開かないときにも野菜室ファン５３を駆動するようになっている。   Furthermore, the vegetable compartment fan 53 is driven even when the temperature detected by the refrigerator compartment temperature detecting means 65 and the vegetable compartment temperature detecting means 66 is always low and the refrigerator compartment damper 34 is not opened continuously for a certain time or longer. ing.

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.

まず、冷凍サイクルの動作について説明する。   First, the operation of the refrigeration cycle will be described.

庫内の設定された温度に応じて制御部６８からの信号により冷凍サイクルが動作し冷却運転が行われる。圧縮機１５の動作により吐出された高温高圧の冷媒は、凝縮器（図示せず）である程度凝縮液化し、さらに冷蔵庫の側面や背面、また冷蔵庫の前面間口に配設された冷媒配管（図示せず）などを経由し冷蔵庫の結露を防止しながら凝縮液化し、キャピラリーチューブ（図示せず）に至る。その後、キャピラリーチューブでは圧縮機１５への吸入管（図示せず）と熱交換しながら減圧されて低温低圧の液冷媒となって冷却室の冷却器１８に至る。ここで、前記冷却器１８内の冷媒は蒸発気化し、当該冷却器１８を有する冷却室１６で各貯蔵室を冷却するための冷気が生成される。   The refrigeration cycle is operated by a signal from the control unit 68 according to the temperature set in the refrigerator, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 15 is condensed to some extent by a condenser (not shown), and further, refrigerant piping (not shown) disposed on the side and rear surfaces of the refrigerator and the front opening of the refrigerator. Etc.), while condensing and liquefying while preventing condensation in the refrigerator, it reaches a capillary tube (not shown). Thereafter, the capillary tube is depressurized while exchanging heat with a suction pipe (not shown) to the compressor 15 and becomes a low-temperature and low-pressure liquid refrigerant and reaches the cooler 18 in the cooling chamber. Here, the refrigerant in the cooler 18 evaporates, and cool air for cooling each storage chamber is generated in the cooling chamber 16 having the cooler 18.

次に冷気循環による冷却動作について説明する。   Next, the cooling operation by the cold air circulation will be described.

冷却室１６内で生成された低温の冷気は、冷却ファン１９によって、冷却室冷気搬送路３０から冷蔵室７と冷凍室９に送られ、冷蔵室７に供給された冷気は冷蔵室７を冷却した後、野菜室８に供給され、それぞれの室が設定温度に冷却される。そして、各室を冷却したのちの冷気は、再び冷却室１６に戻って冷却器１８により冷却され、冷却ファン１９で各室に循環していく。また、上記各室への冷気供給は、制御部６８が冷蔵室温度検知手段６５及び冷凍室温度検知手段６７の検出温度に基づき圧縮機１５と冷却ファン１９を運転／停止、及び冷蔵室ダンパ３１、冷凍室ダンパ３４を開・閉制御され、それぞれの室が設定温度帯に維持されるようになっている。   The low-temperature cold air generated in the cooling chamber 16 is sent by the cooling fan 19 from the cooling chamber cold-air conveyance path 30 to the refrigerator compartment 7 and the freezer compartment 9, and the cold air supplied to the refrigerator compartment 7 cools the refrigerator compartment 7. After that, it is supplied to the vegetable room 8 and each room is cooled to the set temperature. Then, the cold air after cooling each chamber returns to the cooling chamber 16 again, is cooled by the cooler 18, and is circulated to each chamber by the cooling fan 19. In addition, the cold air supply to each of the chambers is performed by the control unit 68 operating / stopping the compressor 15 and the cooling fan 19 based on the temperatures detected by the refrigerator temperature detecting means 65 and the freezer temperature detecting means 67, and the refrigerator temperature damper 31. The freezer damper 34 is controlled to be opened and closed so that each chamber is maintained in a set temperature range.

次に、野菜室８の冷却動作について説明する。   Next, the cooling operation of the vegetable compartment 8 will be described.

野菜室８は冷蔵冷気戻り通路３３からの冷蔵室冷却後の冷気が図１２に示すように冷気
の戻り通路３８に設けられている野菜冷気入口４４から供給されて冷却される。この冷気は冷却ファン１９の送風圧によって野菜冷気入口４４から野菜室通路部５０を介して緩やかに野菜室８に流れ込み、野菜収納ケース４８の下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂと野菜室８の内周壁との間の空間を流れ、この野菜収納ケース４８内に収納されている野菜やペットボトル等をケース外周から間接的に冷却し、野菜冷気戻り口４６から冷蔵冷気戻り通路３３を経由して冷気戻り通路４０から冷却室１６へと循環する。 The vegetable room 8 is cooled by the cold air after cooling from the refrigerated cold air return passage 33 being supplied from the vegetable cold air inlet 44 provided in the cold air return passage 38 as shown in FIG. This cold air gently flows into the vegetable room 8 from the vegetable cold air inlet 44 through the vegetable room passage portion 50 by the blowing pressure of the cooling fan 19, and the lower and upper vegetable storage cases 49 a and 49 b of the vegetable storage case 48 and the vegetable room. 8, the vegetables and plastic bottles stored in the vegetable storage case 48 are indirectly cooled from the outer periphery of the case, and the chilled cold air return passage 33 is passed through the vegetable cold air return port 46. It circulates from the cold air return passage 40 to the cooling chamber 16 via the via.

ここで、この実施の形態で示す冷蔵庫では図１２で示したように野菜室８の野菜室通路部５０に野菜室ファン５３が設けられており、野菜室ファン５３が回転すると、戻り通路３８を流れる戻り冷気の多くが前記野菜冷気入口４４から野菜室通路部５０内へと吸引され、
野菜室ファン５３の吹出口５４より野菜室８内の下段野菜収納ケース４９ａ後面に向かって供給されることになる。 Here, in the refrigerator shown in this embodiment, as shown in FIG. 12, the vegetable room fan 53 is provided in the vegetable room passage portion 50 of the vegetable room 8, and when the vegetable room fan 53 rotates, the return passage 38 is opened. Most of the flowing return cold air is sucked from the vegetable cold air inlet 44 into the vegetable room passage 50,
The vegetables are supplied from the outlet 54 of the vegetable room fan 53 toward the rear surface of the lower vegetable storage case 49a in the vegetable room 8.

野菜室８の下段野菜収納ケース４９ａに向かって供給された冷気は、下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂと野菜室８の底面及び内周壁との間の空間を前記冷却ファン１９の送風圧によって循環する際の流れよりも早く流れ、野菜冷気戻り口４６から戻り通路３８を介して冷却室１６へと戻り循環する。その際、冷却室１６へと戻り循環する冷気以外の冷気は野菜室８の上部に設けた第一の野菜冷気吸込み口４７及び第二の野菜冷気吸込み口５１より第一の通路４７ａ及び第二の通路５１ａに吸引され、これらの通路と連通している野菜室通路部５０の上部開口から野菜室ファン５３に吸引されて当該野菜室ファン５３の吹出口５４から再び野菜室８内の下段野菜収納ケース４９ａに向けて供給され、野菜室８内を拡散及び循環する。   The cold air supplied toward the lower vegetable storage case 49a of the vegetable compartment 8 is sent to the cooling fan 19 through the space between the lower vegetable storage case 49a and the upper vegetable storage case 49b and the bottom and inner peripheral walls of the vegetable compartment 8. It flows faster than the flow when it is circulated by the wind pressure, and returns from the vegetable cold air return port 46 to the cooling chamber 16 via the return passage 38 and circulates. At that time, cool air other than the cool air returning to the cooling chamber 16 is circulated from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 provided in the upper portion of the vegetable chamber 8. The lower vegetables in the vegetable compartment 8 are again sucked into the vegetable compartment fan 53 from the upper opening of the vegetable compartment passage portion 50 communicating with these passages 51a and from the outlet 54 of the vegetable compartment fan 53 again. It is supplied toward the storage case 49a and diffuses and circulates in the vegetable compartment 8.

次に、野菜室８の結露防止について説明する。   Next, prevention of condensation in the vegetable room 8 will be described.

野菜室８は前記のようにして冷却されるが、その背面に位置している冷却室１６及び下方に位置する冷凍室９からの冷輻射を受け、従来と同様その背面下部近傍が低温化しやすい。特に冷却室１６からの冷輻射が強く、野菜室８背面への冷輻射は、冷却室１６自体はもちろん冷却室１６から冷蔵室ダンパ３１に至るまでの冷却室冷気搬送路３０帯域がこの冷却室１６と同じ極低温帯の冷却室温度域となっていてこの冷蔵室ダンパ３１までの冷却室温度帯域と対向する部分で強い冷輻射を受け、この部分が低温化しやすい。   Although the vegetable compartment 8 is cooled as described above, it receives cold radiation from the cooling compartment 16 located on the back surface and the freezer compartment 9 located below, and the vicinity of the lower part of the back surface is likely to be lowered in temperature as in the past. . In particular, the cold radiation from the cooling chamber 16 is strong, and the cooling radiation from the cooling chamber 16 itself to the refrigerator compartment damper 31 as well as the cooling chamber 16 itself is the cooling chamber cold air conveyance path 30 zone from the cooling chamber 16 itself. The cooling chamber temperature region is the same as that in the cryogenic temperature zone 16, and strong cold radiation is received at the portion facing the cooling chamber temperature zone up to the refrigerator compartment damper 31, and this portion is easily lowered in temperature.

この冷輻射による野菜室背面下部近傍の低温化は、この冷蔵庫では、まず、前記した野菜室ファン５３の駆動によって野菜室８内を拡散及び循環する冷気により温度が分散され、低温化を抑制する。すなわち、野菜室ファン５３によって野菜室８内の冷気は拡散及び循環され、この拡散及び循環する冷気は、野菜室８の背面に位置する冷却室温度帯域からの冷輻射および下方に位置する冷凍室９からの冷輻射によって低温化しやすい野菜室背面下部付近の温度を野菜室８内に拡散させ、野菜室８内の温度を下げて野菜室８内を冷却すると同時に、野菜室背面下部付近に極端な低温化や温度差が生じるのを抑制し、結露発生を防止する。   In this refrigerator, the temperature is lowered by the cold air that diffuses and circulates in the vegetable compartment 8 by driving the vegetable compartment fan 53 and suppresses the lowering of the temperature in the vicinity of the lower back of the vegetable compartment by the cold radiation. . That is, the cold air in the vegetable room 8 is diffused and circulated by the vegetable room fan 53, and the diffused and circulated cold air is radiated from the cooling room temperature zone located at the back of the vegetable room 8 and the freezer room located below. The temperature near the lower part of the back of the vegetable room, which tends to be lowered by cold radiation from 9, is diffused in the vegetable room 8, and the temperature in the vegetable room 8 is lowered to cool the inside of the vegetable room 8 and at the same time, Suppressing the occurrence of low temperatures and temperature differences and preventing condensation.

本実施の形態では野菜室冷気入口４４の前方でかつ前から見て重なる位置に野菜室ファン５３を有するため、野菜ファン５３の吸込み側の風路面積を大きくすることができ野菜室ファン５３の風路抵抗を小さくすることができる。これにより、野菜室８内のより多くの冷気を拡散及び循環させることができるため、結露発生の抑制効果を更に高めることができる。   In the present embodiment, since the vegetable room fan 53 is provided in front of the vegetable room cold air inlet 44 and in an overlapping position as viewed from the front, the air passage area on the suction side of the vegetable fan 53 can be increased. Air path resistance can be reduced. Thereby, since more cold air in the vegetable compartment 8 can be diffused and circulated, the effect of suppressing the occurrence of condensation can be further enhanced.

一方、全ての室が設定温度を下回り圧縮機１５及び冷却ファン１９の動作が停止すると
、全ての冷気はそれまでの冷却ファン１９により付いていた圧力差を解消し、温度の違いから生じる密度差による平衡状態へ流れ始める。冷却ファン１９が動作している際は、冷却室冷気搬送路３０に次いで冷凍室９内の圧力が高いため、冷凍室９内の冷気は圧力差が解消するまで広がり続ける。このとき、冷凍室９内及び冷却室１６内の冷気は比較的低温で密度が高いため下方に溜まる性質があり、最も冷たい冷却室１６の高さまで冷気が達することになる。従って、冷気戻り通路４０を逆流して広がった冷気は冷却室１６に溜まる冷気の上端、つまり冷却室１６の上方に開口した冷却ファン１９の下端高さまで達する。本実施の形態では、野菜室冷気入口４４の下端は冷却ファン１９下端高さよりも高く設置されているため、野菜室冷気入口４４から逆流した冷気が野菜室８へ流入することを抑制できる。これにより、野菜室８が逆流冷気により局所的に冷却されることを抑制し、野菜室８内の結露や凍結、過冷を防止できるため、保存野菜の劣化を防止することができる。 On the other hand, when all the chambers are below the set temperature and the operation of the compressor 15 and the cooling fan 19 is stopped, all the cold air eliminates the pressure difference applied by the previous cooling fan 19 and the density difference caused by the temperature difference. It begins to flow to the equilibrium state by. When the cooling fan 19 is operating, since the pressure in the freezer compartment 9 is the second highest after the cooler air supply path 30, the cool air in the freezer compartment 9 continues to spread until the pressure difference is eliminated. At this time, the cold air in the freezer compartment 9 and the cooling chamber 16 has a property of accumulating downward because of its relatively low temperature and high density, and the cold air reaches the coldest cooling chamber 16 height. Accordingly, the cold air that has flowed backward through the cold air return passage 40 reaches the upper end of the cold air accumulated in the cooling chamber 16, that is, the lower end height of the cooling fan 19 that opens above the cooling chamber 16. In the present embodiment, since the lower end of the vegetable compartment cold air inlet 44 is set higher than the lower end height of the cooling fan 19, it is possible to suppress the cold air flowing backward from the vegetable compartment cold air inlet 44 from flowing into the vegetable compartment 8. Thereby, it can suppress that the vegetable compartment 8 is locally cooled by backflow cold air, and it can prevent dew condensation, freezing, and overcooling in the vegetable compartment 8, and can prevent deterioration of preserved vegetables.

また、断熱突片１７ｃは仕切板６内の断熱性遮壁２４に設けた通路開口２６の縁にウレタンフォーム（図示せず）等のシール材を介して当接しているため、断熱突片１７ｃ下から冷気が漏れて野菜室８へ流入することを抑制できる。さらに、通路開口２６は冷気戻り通路用開口２５よりも小さく構成されているため、上面部材６ａが逆流冷気にさらされ冷却されることも防止できる。そのため上面部材６ａが局所的に冷却され結露や凍結が発生することを抑制できる。   Further, since the heat insulating protrusion 17c is in contact with the edge of the passage opening 26 provided in the heat insulating shielding wall 24 in the partition plate 6 via a sealing material such as urethane foam (not shown), the heat insulating protrusion 17c. It can suppress that cold air leaks from the bottom and flows into the vegetable compartment 8. Furthermore, since the passage opening 26 is configured to be smaller than the cold air return passage opening 25, it is possible to prevent the upper surface member 6a from being cooled by being exposed to the backflow cold air. Therefore, it can suppress that the upper surface member 6a is locally cooled and dew condensation and freezing generate | occur | produce.

断熱突片１７ｃの野菜室冷気入口４４より下方の背面まで逆流冷気が達することになり、断熱突片１７ｃは局所的に冷却されるが、断熱突片１７ｃは断熱材で構成されているため、野菜室８庫内との温度差によりその表面に結露が生じることを抑制できる。   Backflow cold air will reach the back below the vegetable compartment cold air inlet 44 of the heat insulation protrusion 17c, and the heat insulation protrusion 17c is locally cooled, but since the heat insulation protrusion 17c is made of a heat insulating material, It can suppress that dew condensation arises on the surface by the temperature difference with the inside of 8 vegetable compartments.

しかしながら、夏場に一度に大量の野菜を投入した際など、野菜室８庫内が高温多湿である場合は結露が発生することがある。本実施の形態では断熱突片１７ｃは野菜室冷気入口４４より下方に、右下がりの凸形状１７ｄを有するため発生した結露は右へ向かって流れる。さらに、凸形状１７ｄの先には戻り通路３８へ通じる切欠き１７ｅを有するため、流れた結露は戻り通路３８へ入りそのまま冷気戻り通路４０を通りドレンパン２９へ流れ落ちる。従って断熱突片１７ｃで発生した結露の野菜室内への流出を防ぐことができるため野菜の劣化を防止することができる。

以上のようにしてこの冷蔵庫は冷却運転中と冷却停止中の何れの場合でも野菜室８の局部的な低温化による結露発生を防止するから、冷気生成用の冷却器１８を大型化して冷却室１６が冷凍室９と野菜室８にまたがる大きな大能力の大型冷蔵庫であっても、その冷却室１６からの冷輻射に起因する結露を抑制することができる。したがって、小能力の小型冷蔵庫から大能力の大型冷蔵庫に至る全域の冷蔵庫において、その冷却室１６からの冷輻射で生じる結露水による野菜劣化を抑制し、良好な状態で野菜を冷却保存することが可能となる。しかも、この冷蔵庫は、野菜室８を冷蔵室７と冷凍室９との間となる冷蔵庫本体１上下略中央部分に設けた真ん中野菜室タイプの冷蔵庫となっているから、前記した如く結露発生を防止して野菜を良好な状態に冷却保存しつつ、野菜等の出し入れを中心に使用されるユーザの使い勝手を高めることができ、効果的である。 However, when a large amount of vegetables are introduced at a time in the summer, for example, condensation may occur when the inside of the 8 vegetable rooms is hot and humid. In the present embodiment, the heat-insulating protrusion 17c has a convex shape 17d that is downwardly inclined downward from the vegetable room cold air inlet 44, so that the generated condensation flows toward the right. Furthermore, since the notch 17e leading to the return passage 38 is provided at the tip of the convex shape 17d, the dew that has flowed enters the return passage 38 and flows down to the drain pan 29 through the cool air return passage 40 as it is. Therefore, since the dew condensation which generate | occur | produced in the heat insulation protrusion 17c can be prevented from flowing out into the vegetable room, deterioration of vegetables can be prevented.

As described above, this refrigerator prevents the occurrence of dew condensation due to the local low temperature of the vegetable room 8 during both the cooling operation and the cooling stop, so the cooler 18 for generating cold air is increased in size to the cooling room. Even if 16 is a large large-capacity refrigerator that spans the freezer compartment 9 and the vegetable compartment 8, dew condensation due to cold radiation from the cooling compartment 16 can be suppressed. Therefore, in the refrigerator in the whole area from the small capacity small refrigerator to the large capacity large refrigerator, it is possible to suppress the vegetable deterioration due to the dew condensation water generated by the cold radiation from the cooling chamber 16 and cool and store the vegetables in a good state. It becomes possible. In addition, this refrigerator is a middle vegetable room type refrigerator in which the vegetable room 8 is provided in the upper and lower central parts of the refrigerator body 1 between the refrigerator compartment 7 and the freezer compartment 9, so that condensation occurs as described above. This is effective because it is possible to improve the usability of a user who is mainly used for taking in and out vegetables and the like while preventing and storing the vegetables in a good condition.

なお、本実施の形態では野菜室冷気入口４４を野菜室８の正面から見て右側部分の下部に設け、この野菜室冷気入口４４の略上方位置部分に野菜室冷気戻り口４６を設け、野菜室ファン５３により冷気を野菜室内に循環した構成としているが、特許文献１記載の従来の冷蔵庫と同様に、野菜室にファンを設けず冷気を循環させる場合は、戻り通路３８の上方に野菜室冷気入口と、下方に野菜室冷気戻り口を設けることで、冷却ファン１９によって生じる戻り通路３８内の圧力差を利用し野菜室に冷気を循環させることができる。このときは下方に設けた野菜室戻り口の下端を冷却ファンの下端よりも上方に設けることで、本実施の形態で得られる冷却停止中の逆流抑制効果を発現することが可能である。   In the present embodiment, the vegetable room cold air inlet 44 is provided at the lower part of the right side when viewed from the front of the vegetable room 8, and the vegetable room cold air return port 46 is provided at a position substantially above the vegetable room cold air inlet 44 to Although it is set as the structure which circulated cold air into the vegetable compartment by the room fan 53, like the conventional refrigerator of patent document 1, when not providing a fan in a vegetable compartment and circulating cold air, the vegetable compartment is located above the return passage 38. By providing the cold air inlet and the vegetable room cold air return port below, the cold air can be circulated to the vegetable room using the pressure difference in the return passage 38 generated by the cooling fan 19. At this time, by providing the lower end of the vegetable chamber return port provided below the lower end of the cooling fan, it is possible to exhibit the backflow suppression effect during cooling stop obtained in the present embodiment.

また、本実施の形態では、冷蔵庫本体１の最上部に冷蔵室７、その下に野菜室８、最下部に冷凍室９を配置した３室のレイアウトとなっているが、冷凍室の上方に冷蔵温度帯の貯蔵室が一つだけ配置された２室のレイアウトであっても、上側貯蔵室の戻り通路の開口部下端が冷却ファンの下端よりも上方にあれば、本実施の形態と同様に冷却停止時の逆流を抑制し、上側貯蔵室の結露を防止することが可能となる。さらに、最下部の貯蔵室が冷凍温度帯で無くても上側貯蔵室より低い温度（たとえばチルド温度）の場合や、冷凍室の更に下に貯蔵室がある場合でも、上側貯蔵室の戻り通路の開口部下端が冷却ファン１９より上方に配置されていれば、本実施の形態と同様の効果を発現することができるため、あらゆるレイアウトの冷蔵庫に適用できる発明である。   Moreover, in this Embodiment, although it is the layout of 3 rooms which has arrange | positioned the refrigerator compartment 7 in the uppermost part of the refrigerator main body 1, the vegetable compartment 8 under it, and the freezer compartment 9 in the lowest part, Even in the case of a two-room layout in which only one storage room in the refrigerated temperature zone is arranged, if the lower end of the opening of the return passage of the upper storage room is above the lower end of the cooling fan, the same as in the present embodiment In addition, it is possible to suppress the backflow when cooling is stopped and to prevent dew condensation in the upper storage chamber. Furthermore, even if the lowermost storage room is not in the freezing temperature zone, even if the temperature is lower than the upper storage room (for example, the chilled temperature), or if there is a storage room below the freezing room, the return passage of the upper storage room If the lower end of the opening is arranged above the cooling fan 19, the same effect as in the present embodiment can be exhibited, and therefore the invention can be applied to refrigerators of any layout.

以上のようにこの冷蔵庫は野菜室８内に生じる結露を防止して野菜等を良好な状態に冷却保存できるが、更にこの冷蔵庫は野菜室冷却に関しても種々の効果を有するものであるので、以下これを説明しておく。   As described above, this refrigerator can prevent dew condensation occurring in the vegetable room 8 and cool and store the vegetables and the like in a good state. However, since this refrigerator has various effects also on the vegetable room cooling, This will be explained.

まず、上記野菜室８に設けた野菜室ファン５３は、野菜収納ケース４８の下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂの外周に向けて冷気を拡散及び循環させる構成としてあるから、野菜室ファン５３によって拡散及び循環する冷気が下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂ内に入って野菜同士の間を流れることを抑制でき、野菜同士の間を冷気が流れることによって生じがちな野菜の乾燥劣化も防止して新鮮かつ良好な状態で野菜を冷却保存することができる。   First, the vegetable room fan 53 provided in the vegetable room 8 is configured to diffuse and circulate cold air toward the outer periphery of the lower vegetable storage case 49a and the upper vegetable storage case 49b of the vegetable storage case 48. Drying of vegetables that can be caused by cold air that diffuses and circulates by 53 enters the lower vegetable storage case 49a and the upper vegetable storage case 49b and flows between the vegetables, and cold air flows between the vegetables Deterioration is also prevented and vegetables can be stored in a fresh and good state in a cold state.

特にこの実施の形態では上記下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂで構成される野菜収納ケース４８の上部に野菜室内を拡散または循環する冷気の吸込み口ともなる第一の野菜冷気吸込み口４７及び第二の野菜冷気吸込み口５１を設けているから、野菜室８内を拡散及び循環する冷気は下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂからなる野菜収納ケース４８内に入り込むことなくそのまま第一の野菜冷気吸込み口４７及び第二の野菜冷気吸込み口５１へと流れる様になり、より確実に野菜の乾燥劣化を防止して新鮮かつ良好な状態で野菜を冷却保存することができる。これは上段野菜収納ケー４９スの上面開口縁を野菜室天井面ともなる仕切板５に近接させることでより高めることができるとともに、当該上面面開口を覆う蓋を設ければさらに効果的に高めることができる。   In particular, in this embodiment, the first vegetable cold air suction port 47 that also serves as a cold air suction port that diffuses or circulates in the vegetable compartment above the vegetable storage case 48 constituted by the lower vegetable storage case 49a and the upper vegetable storage case 49b. Since the second vegetable cold air suction port 51 is provided, the cold air diffused and circulated in the vegetable compartment 8 does not enter the vegetable storage case 48 including the lower vegetable storage case 49a and the upper vegetable storage case 49b. It flows to the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51, and can more reliably prevent the vegetables from drying and can be kept cold and preserved in a fresh and good state. This can be further increased by bringing the upper opening edge of the upper vegetable storage case 49 close to the partition plate 5 that also serves as the vegetable room ceiling, and more effectively if a cover that covers the upper surface opening is provided. be able to.

加えて、上記野菜室ファン５３は下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂで構成される野菜収納ケース４８の上部開口縁より下方部分に位置しているから、野菜室ファン５３から送風される冷気は野菜収納ケース４８のうち、特にその下段野菜収納ケース４９ａの底面及び下部外周付近を拡散及び循環するようになる。したがって、この野菜室ファン５３によって拡散及び循環する冷気はさらに野菜収納ケース４８内に入り込みにくいものとなり、野菜収納ケース４８内に冷気が入り込んで循環することにより生じる野菜の乾燥劣化をこの点からも確実に防止することができ、より新鮮かつ良好な状態で野菜を冷却保存することができる。   In addition, since the vegetable compartment fan 53 is located below the upper opening edge of the vegetable storage case 48 constituted by the lower vegetable storage case 49a and the upper vegetable storage case 49b, it is blown from the vegetable chamber fan 53. The cold air diffuses and circulates in the vegetable storage case 48, particularly in the vicinity of the bottom surface and the lower periphery of the lower vegetable storage case 49a. Therefore, the cold air diffused and circulated by the vegetable compartment fan 53 is more difficult to enter the vegetable storage case 48, and the dry deterioration of the vegetables caused by the cold air entering and circulating in the vegetable storage case 48 is also from this point. This can be surely prevented, and the vegetables can be refrigerated and stored in a fresher and better state.

また、上記野菜室８は野菜冷気入口４４に連通する野菜室通路部５０を有し、この野菜室通路部５０の下部に野菜室ファン５３を備えているから、野菜室通路部５０がスロートのような機能を発揮して冷気を効率よく野菜室８に取り込み拡散及び循環させることができ、これにより野菜室８内での結露発生をさらに効率よく抑制することができる。   The vegetable compartment 8 has a vegetable compartment passage portion 50 communicating with the vegetable cold air inlet 44, and a vegetable compartment fan 53 is provided below the vegetable compartment passage portion 50. By exhibiting such a function, cold air can be efficiently taken into the vegetable compartment 8 and diffused and circulated, thereby preventing the occurrence of condensation in the vegetable compartment 8 more efficiently.

加えて、この実施の形態では上記野菜収納ケース４８はその下段野菜収納ケース４９ａの内部を左右に仕切ってその一方にペットボトルやパック等のペットボトル等収納部５９を設け、このペットボトル等収納部５９側の野菜室背面部分に野菜室ファン５３を設けて
、当該ペットボトル等収納部５９に向けて野菜室内の冷気を拡散及び循環させるように構成してあるから、野菜室ファン５３からの冷気はペットボトル等収納部５９の周りを集中的に循環するようになり、ペットボトル等収納部５９に収納されているペットボトルやパック等を効率よく冷却することができる。特にペットボトル等収納部５９に収納されているペットボトルやパック等の飲料水等は野菜よりも熱容量が大きくて冷えにくいことから効果的であり、これによってペットボトル等の収納による野菜室温度の上昇を効率よく抑制することができる。 In addition, in this embodiment, the vegetable storage case 48 divides the inside of the lower vegetable storage case 49a left and right, and is provided with a storage portion 59 such as a PET bottle or a pack on one side thereof. Since the vegetable room fan 53 is provided on the back part of the vegetable room on the side of the part 59 and the cold air in the vegetable room is diffused and circulated toward the storage part 59 such as the plastic bottle, The cold air circulates intensively around the PET bottle storage 59, and the PET bottles and packs stored in the PET bottle storage 59 can be efficiently cooled. In particular, drinking water such as PET bottles and packs stored in the PET bottle storage 59 is effective because it has a larger heat capacity than vegetables and is difficult to cool. The rise can be efficiently suppressed.

またこの実施の形態では、野菜室ファン５３とともに野菜室８に設けた第一の野菜冷気吸込み口４７をも野菜収納ケース４８のペットボトル等収納部５９側の部分に設けた構成としてあるから、野菜室ファン５３から野菜冷気戻り口４６への冷気をペットボトル等収納部分にさらに効率よく集中的に循環させることができ、効果的である。   In this embodiment, since the first vegetable cold air inlet 47 provided in the vegetable compartment 8 together with the vegetable compartment fan 53 is also provided in the portion of the vegetable storage case 48 on the storage portion 59 side such as a plastic bottle, The cold air from the vegetable room fan 53 to the vegetable cold air return port 46 can be circulated more efficiently and intensively to the storage part such as a plastic bottle, which is effective.

また、野菜室８内の冷気を循環させるためのもう一つの吸込み口ともなる第二の野菜冷気吸込み口５１を野菜室ファン５３と略対角位置の野菜室上部に設けた構成としてあるから、野菜室ファン５３からの冷気は野菜収納ケース４８のペットボトル等収納部５９の底面部分を通って前方へと野菜室８内を斜めに縦断しながら拡散及び循環して野菜室上部の第二の野菜冷気吸込み口５１へと流れる様になるので、下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂからなる野菜室ケース内への冷気の入り込みを防止しつつ下段野菜収納ケース４９ａ及び上段野菜収納ケース４９ｂからなる野菜ケースの外周に広範囲に冷気を拡散及び循環させることができ、野菜及びペットボトル等を効果的に冷却することができる。   In addition, since the second vegetable cold air suction port 51 that is also another suction port for circulating the cold air in the vegetable room 8 is provided in the vegetable room fan 53 and the upper part of the vegetable room at a substantially diagonal position, The cold air from the vegetable compartment fan 53 diffuses and circulates through the bottom portion of the vegetable bottle storage portion 59 of the vegetable storage case 48 to the front and obliquely cuts through the vegetable compartment 8 and circulates in the second upper portion of the vegetable compartment. Since it flows to the vegetable cold air inlet 51, the lower vegetable storage case 49a and the upper vegetable storage case 49b are prevented while preventing the cold air from entering the vegetable room case composed of the lower vegetable storage case 49a and the upper vegetable storage case 49b. Cold air can be diffused and circulated in a wide range around the outer periphery of the vegetable case, and vegetables and plastic bottles can be effectively cooled.

また、この冷蔵庫は、冷蔵冷気往き通路３２と冷蔵冷気戻り通路３３との間に連通路３９が形成してあり、野菜室ファン５３が回転するとその吸引力によって冷蔵冷気往き通路３２内の低温な新鮮冷気が冷蔵冷気戻り通路３３内に混入して戻り通路３８を介し野菜冷気入口４４から野菜室８内に供給される。すなわち、野菜室８は、冷蔵室７からの冷蔵室冷却後の比較的温度が高くなっている戻り冷気によって冷却されるが、この冷蔵庫では野菜室ファン５３の回転により前記冷蔵室冷却後の冷気に低温の新鮮冷気が混入して低温化された冷気で野菜室８を冷却することになる。したがって野菜室８を効果的に冷却することができ、例えば、野菜やペットボトル等が一時的に多く収納された時などのように冷却負荷条件が悪いときでも、野菜室８を確実に冷却することができる。また、上記連通路３９を介して取り込む低温の新鮮冷気の量は野菜室ファン５３の回転数を上げることによって増加させることができ、夏場で熱容量の大きい常温のペットボトル等が大量に収納された時でも、これを確実に冷却することができる。しかも野菜室８を確実に冷却できるので、冷却室１６からの冷輻射による結露発生も効率よく抑制でき、野菜を良好な状態で冷却保存することができる。   Further, in this refrigerator, a communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33, and when the vegetable compartment fan 53 rotates, the suction force of the vegetable compartment fan 53 causes the low temperature in the refrigerated cold air forward passage 32 to be low. Fresh cold air is mixed into the refrigerated cold air return passage 33 and supplied from the vegetable cold air inlet 44 into the vegetable compartment 8 through the return passage 38. That is, the vegetable room 8 is cooled by the return cold air having a relatively high temperature after cooling from the cold room 7, but in this refrigerator, the cold air after cooling the cold room is rotated by the rotation of the vegetable room fan 53. The vegetable room 8 is cooled with cold air that has been cooled by mixing low temperature fresh cold air. Therefore, the vegetable compartment 8 can be effectively cooled, and the vegetable compartment 8 is reliably cooled even when the cooling load condition is bad, for example, when many vegetables, plastic bottles, etc. are temporarily stored. be able to. In addition, the amount of low-temperature fresh cold air taken in through the communication passage 39 can be increased by increasing the number of rotations of the vegetable compartment fan 53, and a large amount of room temperature PET bottles having a large heat capacity are stored in summer. Even at times, this can be reliably cooled. Moreover, since the vegetable compartment 8 can be reliably cooled, the occurrence of dew condensation due to cold radiation from the cooling compartment 16 can be efficiently suppressed, and the vegetables can be stored in a cooled state in a good state.

上記野菜室ファン５３は、冷蔵室温度検知手段６５からの出力によって冷蔵室ダンパ３１を開いて冷蔵室７及び野菜室８を冷却しているときに作動し野菜室８内の冷気を拡散及び循環させるが、この実施の形態では野菜室８に設けた野菜室温度検知手段６６の検出温度に基づいても制御するようにしてあるから、冷蔵室７の温度が高くて冷却動作を行なっていないときでも野菜室８の温度が設定温度以上になると回転し始め、野菜室８内に冷気を拡散及び循環させるようになる。したがって、野菜室温度が高くなって冷却室１６からの冷輻射により大きな温度差が生じ結露が発生しやすい条件になると、野菜室ファン５３が回転してこれを解消し、効果的に結露発生を防止することができる。   The vegetable room fan 53 operates when the cold room damper 31 is opened by the output from the cold room temperature detecting means 65 to cool the cold room 7 and the vegetable room 8 and diffuses and circulates the cold air in the vegetable room 8. However, in this embodiment, the temperature is controlled based on the temperature detected by the vegetable room temperature detecting means 66 provided in the vegetable room 8, so that when the temperature of the refrigerator compartment 7 is high and the cooling operation is not performed. However, when the temperature of the vegetable compartment 8 becomes equal to or higher than the set temperature, the vegetable compartment 8 starts to rotate, and cold air is diffused and circulated in the vegetable compartment 8. Therefore, when the temperature of the vegetable room becomes high and a large temperature difference is caused by the cold radiation from the cooling chamber 16 and the condition is likely to cause dew condensation, the vegetable room fan 53 rotates to eliminate this and effectively generate dew condensation. Can be prevented.

また、上記野菜室８の温度が、野菜室ファン５３の回転にもかかわらず前記設定温度よりも若干高い温度に設定している第二設定温度より高くなるようなことがあれば、野菜室ファン５３の回転数を上げて冷気の拡散及び循環量を増強し、更には低温の新鮮冷気の取
り込み混入量を増加させることができ、野菜室８を確実に冷却することができる。よって、夏場における冷却不足を解消し野菜等の良好な冷却保存を確実に実現して冷蔵庫の信頼性を高めることができる。 If the temperature of the vegetable room 8 becomes higher than the second set temperature set to a temperature slightly higher than the set temperature in spite of the rotation of the vegetable room fan 53, the vegetable room fan The number of rotations of 53 can be increased to increase the diffusion and circulation amount of the cold air, and the amount of the fresh cold air taken in can be increased and the vegetable room 8 can be reliably cooled. Therefore, the lack of cooling in the summer can be resolved, and good cooling storage of vegetables and the like can be reliably realized to increase the reliability of the refrigerator.

以上、本発明の実施の形態を説明してきたが、上記実施の形態で説明した構成は本発明を実施する一例として示したものであり、本発明の目的を達成する範囲で種々変更可能なことは言うまでもない。   Although the embodiment of the present invention has been described above, the configuration described in the above embodiment is shown as an example for carrying out the present invention, and various modifications can be made within the scope of achieving the object of the present invention. Needless to say.

本発明にかかる冷蔵庫は、冷却能力が大きな冷蔵庫であっても高温貯蔵室内の結露発生を抑制し、良好な状態で貯蔵食品を冷却保存することができ、家庭用はもちろん業務用冷蔵庫にも幅広く適用することができる。   The refrigerator according to the present invention can suppress the occurrence of dew condensation in a high-temperature storage room even in a refrigerator having a large cooling capacity, and can cool and store stored foods in a good state. Can be applied.

１ 冷蔵庫本体
２ 外箱
３ 内箱
４ 発泡断熱材
５，６ 仕切板
７ 冷蔵室（高温貯蔵室）
８ 野菜室（高温貯蔵室）
９ 冷凍室（低温貯蔵室）
１０，１１，１２ 扉
１４ 機械室
１５ 圧縮機
１６ 冷却室
１７ 奥面仕切壁体
１７ｃ 断熱突片
１７ｄ 凸形状（水きり形状）
１７ｅ 切欠き（水きり形状）
１８ 冷却器
１９ 冷却ファン
２０ 開口
２２ 上向き突片
２３ 第一のヒータ
２４ 断熱性遮壁
２５ 冷気戻り通路用開口
２６ 通路開口
２７ タンク設置部
２８ 除霜ヒータ
２９ ドレンパン
３０ 冷却室冷気搬送路
３１ 冷蔵室ダンパ
３２ 冷蔵冷気往き通路
３３ 冷蔵冷気戻り通路
３４ 冷凍室ダンパ
３５ 冷蔵冷気入口
３６ 冷蔵冷気戻り口
３７ 往き通路
３８ 戻り通路（高温戻り通路）
３９ 連通路
４０ 冷気戻り通路（高温戻り通路）
４１ 背面壁体
４２ 冷凍冷気入口
４３ 冷凍冷気戻り口
４４ 野菜冷気入口（開口部）
４６ 野菜冷気戻り口
４７ 第一の野菜冷気吸込み口
４７ａ 第一の通路
４８ 野菜収納ケース
４９ａ 下段野菜収納ケース
４９ｂ 上段野菜収納ケース
５０ 野菜室通路部
５１ 第二の野菜冷気吸込み口
５１ａ 第二の通路
５３ 野菜室ファン（高温貯蔵室ファン）
５４ 吹出口
５５ 傾斜面
５６ 第二のヒータ
５７ コネクタ
５８ ケース仕切板
５９ 非野菜収納部（ペットボトル等収納部）
６０ 収納棚
６１ パーシャル室
６２ 操作部
６３ 冷凍室ケース
６４ 製氷装置
６５ 冷蔵室温度検知手段
６６ 野菜室温度検知手段
６７ 冷凍室温度検知手段
６８ 制御部 DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam insulation material 5,6 Partition plate 7 Refrigeration room (high temperature storage room)
8 Vegetable room (high temperature storage room)
9 Freezer room (low temperature storage room)
10, 11, 12 Door 14 Machine room 15 Compressor 16 Cooling room 17 Back surface partition wall body 17c Heat insulation protrusion 17d Convex shape (water drain shape)
17e Notch (water drain shape)
DESCRIPTION OF SYMBOLS 18 Cooler 19 Cooling fan 20 Opening 22 Upward projecting piece 23 First heater 24 Thermal insulation barrier 25 Cold air return passage opening 26 Passage opening 27 Tank installation part 28 Defrost heater 29 Drain pan 30 Cooling room cold air conveyance path 31 Refrigeration room Damper 32 Refrigerated cold air return passage 33 Refrigerated cold air return passage 34 Freezer compartment damper 35 Refrigerated cold air inlet 36 Refrigerated cold air return port 37 Outward passage 38 Return passage (high temperature return passage)
39 Communication passage 40 Cold air return passage (high temperature return passage)
41 Back wall 42 Refrigerated cold air inlet 43 Refrigerated cold air return port 44 Vegetable cold air inlet (opening)
46 Vegetable cold air return 47 47 First vegetable cold air inlet 47a First passage 48 Vegetable storage case 49a Lower vegetable storage case 49b Upper vegetable storage case 50 Vegetable room passage 51 Second vegetable cold air inlet 51a Second passage 53 Vegetable room fan (high temperature storage room fan)
54 Air outlet 55 Inclined surface 56 Second heater 57 Connector 58 Case partition plate 59 Non-vegetable storage part (PET bottle storage part)
60 Storage Shelf 61 Partial Room 62 Operation Unit 63 Freezer Room Case 64 Ice Making Device 65 Cold Room Temperature Detection Means 66 Vegetable Room Temperature Detection Means 67 Freezer Room Temperature Detection Means 68 Control Unit

Claims (4)

冷気を生成する冷却器と、前記冷却器で生成された冷気を強制的に循環させる冷却ファンと、前記冷却器および冷却ファンとを収める冷却室と、前記冷却室の一部を背面に備える低温貯蔵室と、前記低温貯蔵室の上方に前記低温貯蔵室より高い温度に保たれた少なくとも一つの高温貯蔵室と、前記高温貯蔵室と前記冷却室を連通する高温戻り通路を備える冷蔵庫において、前記高温戻り通路に設けた開口部は前記高温貯蔵室と前記高温戻り通路とを連通し、前記開口部の下端は前記冷却ファンの下端よりも上方にあることを特徴とする冷蔵庫。   A cooler that generates cool air, a cooling fan that forcibly circulates the cool air generated by the cooler, a cooling chamber that houses the cooler and the cooling fan, and a low temperature that includes a part of the cooling chamber on the back surface In a refrigerator comprising a storage room, at least one high temperature storage room maintained at a temperature higher than the low temperature storage room above the low temperature storage room, and a high temperature return passage communicating the high temperature storage room and the cooling room, An opening provided in a high temperature return passage communicates the high temperature storage chamber and the high temperature return passage, and a lower end of the opening is above a lower end of the cooling fan. 前記高温戻り通路は前記高温貯蔵室側に水切り形状を有することを特徴とする請求項１記載の冷蔵庫。 The refrigerator according to claim 1, wherein the high temperature return passage has a draining shape on the high temperature storage chamber side. 前記高温戻り通路は少なくとも一部を断熱部材により構成されていることを特徴とする請求項１または２記載の冷蔵庫。 The refrigerator according to claim 1 or 2, wherein at least a part of the high temperature return passage is constituted by a heat insulating member. 高温貯蔵室用ファンを前記開口部の投影面内に備えることを特徴とする請求項１〜３のいずれか１項記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein a high-temperature storage room fan is provided in a projection plane of the opening.

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