JP2010065928A

JP2010065928A - Refrigerator

Info

Publication number: JP2010065928A
Application number: JP2008232625A
Authority: JP
Inventors: Masafumi Hashiyama; 雅文端山; Yuya Hasegawa; 勇也長谷川
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2008-09-10
Filing date: 2008-09-10
Publication date: 2010-03-25
Anticipated expiration: 2028-09-10
Also published as: JP5138519B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator wherein stored objects are less dried. <P>SOLUTION: The refrigerator is provided with: a storage compartment 2 for storing objects; a cooler 11 for generating cold air; a cold air passage 32 which is provided on the back face of the storage compartment 2 and in which cold air generated by the cooler 11 flows; a circulation passage 81 which is arranged to be overlapped with the front side of the cold air passage 32 and vertically extends, and in which cold air within the storage compartment 2 is circulated without passing through the cooler 11; and a member 72 provided between both sides of the back face of the storage compartment 2, forming the front face of the circulation passage 81, and comprising a thermal good conductor with which the cold air flowing in the circulation passage 81 comes into contact. The width between lateral walls of the circulation passage 81 is set to approximately equal to the lateral width of the member 72. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、冷却器を通らずに貯蔵室内の冷気を循環させる循環通路を備えた冷蔵庫に関する。 The present invention relates to a refrigerator provided with a circulation passage for circulating cold air in a storage room without passing through a cooler.

従来の冷蔵庫は特許文献１に開示されている。この冷蔵庫は冷気を生成する冷却器を備え、冷却器からの冷気が流通する冷気通路が冷蔵室の背面に配される。冷気通路は左右に分岐し、冷蔵室背面の左右方向の両端部に配された第１吐出口から冷気を吐出する。冷蔵室の右下部には冷却器に戻る冷気が通る戻り口が設けられる。 A conventional refrigerator is disclosed in Patent Document 1. The refrigerator includes a cooler that generates cool air, and a cool air passage through which cool air from the cooler flows is arranged on the back of the refrigerator compartment. The cold air passage branches left and right, and discharges cold air from the first discharge ports arranged at the left and right ends of the back of the refrigerator compartment. A return port through which cool air returning to the cooler passes is provided in the lower right part of the refrigerator compartment.

また、左右に分岐した冷気通路の間には循環送風機を有した循環通路が設けられる。循環通路の下部には循環送風機によって冷蔵室内の冷気を吸い込む吸込口が設けられる。循環通路の上部側壁には冷気を吐出する第２吐出口が設けられる。 A circulation passage having a circulation fan is provided between the cold air passages branched to the left and right. A suction port is provided below the circulation passage to suck in the cold air in the refrigerator compartment by a circulation fan. A second discharge port for discharging cool air is provided on the upper side wall of the circulation passage.

冷却器で生成された冷気は冷気通路を流通して左右方向の両端部の第１吐出口から吐出される。第１吐出口から吐出された冷気は冷蔵室内を流通し、右下に配された戻り口から流出する。また、一部の冷気は冷蔵室の略中央に流通し、下部の吸込口から循環通路に吸い込まれる。循環通路を流通する冷気は上部の第２吐出口から吐出される。 The cool air generated by the cooler flows through the cool air passage and is discharged from the first discharge ports at both ends in the left-right direction. The cold air discharged from the first discharge port circulates in the refrigerator compartment and flows out from the return port arranged at the lower right. Moreover, a part of cold air circulates in the approximate center of the refrigerator compartment and is sucked into the circulation passage from the lower suction port. The cold air flowing through the circulation passage is discharged from the upper second discharge port.

第２吐出口から吐出された冷気は戻り口から流出するとともに、一部が吸込口から循環通路に導かれる。これにより、冷蔵室の下部の冷気と上部の冷気とを循環させて室内温度を均一化することができる。 The cool air discharged from the second discharge port flows out from the return port, and a part thereof is guided from the suction port to the circulation passage. Accordingly, the cold air in the lower part of the refrigerator compartment and the cold air in the upper part can be circulated to make the room temperature uniform.

特開平９−４２８２０号公報（第３頁−第４頁、第１図）Japanese Patent Laid-Open No. 9-42820 (page 3 to page 4, FIG. 1)

しかしながら、上記従来の冷蔵庫によると、左右方向の両端部に配される第１吐出口から吐出された冷気が右方下部に配された戻り口や略中央に配された吸込口に到達する間に貯蔵物と接触する。冷気通路を流通する冷気は冷却器によって乾燥しているため、第１吐出口から吐出された冷気と接触した貯蔵物の乾燥が促進される問題があった。 However, according to the conventional refrigerator, the cool air discharged from the first discharge ports arranged at both ends in the left-right direction reaches the return port arranged at the lower right side and the suction port arranged at the approximate center. Contact with storage. Since the cold air flowing through the cold air passage is dried by the cooler, there is a problem that the drying of the stored material in contact with the cold air discharged from the first discharge port is promoted.

本発明は、貯蔵物の乾燥を低減できる冷蔵庫を提供することを目的とする。 An object of this invention is to provide the refrigerator which can reduce the drying of a stored matter.

上記目的を達成するために本発明は、貯蔵物を収納する貯蔵室と、冷気を生成する冷却器と、前記貯蔵室の背面に設けられて前記冷却器で生成した冷気が流通する冷気通路と、前記冷気通路の前方に重ねて配されて上下に延びるとともに前記冷却器を通らずに前記貯蔵室内の冷気が循環する循環通路と、前記貯蔵室の背面の両側部にわたって設けられるとともに前記循環通路の前面を形成して前記循環通路を流通する冷気が接する熱良導体から成る部材とを備え、前記循環通路の側壁間の幅が前記部材の横幅に略一致することを特徴としている。 In order to achieve the above object, the present invention includes a storage chamber for storing a stored item, a cooler for generating cold air, and a cold air passage provided on the back of the storage chamber through which the cold air generated by the cooler flows. A circulation passage which is arranged in front of the cold air passage and extends vertically and through which the cold air in the storage chamber circulates without passing through the cooler, and is provided over both sides of the back surface of the storage chamber and the circulation passage And a member made of a good thermal conductor in contact with the cold air flowing through the circulation passage, and the width between the side walls of the circulation passage substantially coincides with the lateral width of the member.

この構成によると、冷却器で生成された冷気は冷気通路を流通して貯蔵室に吐出される。冷気通路から吐出された冷気は貯蔵室内を流通する。貯蔵室内の冷気は循環通路に流入し、冷却器を通らずに貯蔵室に吐出されて循環する。循環通路を流通する冷気は前面の熱良導体から成る部材と接し、冷気の冷熱が部材に伝えられて部材が冷却される。部材に伝えられた冷熱は部材の前面から貯蔵室に放出される。扉の開閉によって貯蔵室内に外気が流入すると外気の水分を含む冷気が冷却された部材の前面に接触して結露する。また、外気の水分を含む冷気が循環通路を流通する。循環通路は貯蔵室の背面の両側部にわたって設けられる部材の横幅に側壁間の幅が略一致し、冷却された部材の背面に広い範囲で冷気が接触して結露する。部材表面の結露は徐々に蒸発し、貯蔵室内が保湿される。 According to this configuration, the cold air generated by the cooler flows through the cold air passage and is discharged into the storage chamber. The cold air discharged from the cold air passage circulates in the storage chamber. The cool air in the storage chamber flows into the circulation passage and is discharged and circulated into the storage chamber without passing through the cooler. The cold air flowing through the circulation passage is in contact with a member made of a good heat conductor on the front surface, and the cold heat of the cold air is transmitted to the member to cool the member. The cold heat transmitted to the member is released from the front surface of the member to the storage chamber. When outside air flows into the storage chamber by opening and closing the door, the cold air containing moisture from the outside air comes into contact with the front surface of the cooled member and condenses. In addition, cool air containing moisture from the outside air flows through the circulation passage. In the circulation passage, the width between the side walls substantially coincides with the lateral width of the member provided over both sides of the back surface of the storage chamber, and cold air contacts the back surface of the cooled member in a wide range to cause condensation. Condensation on the surface of the member gradually evaporates and the storage chamber is moisturized.

また本発明は、上記構成の冷蔵庫において、前記冷気通路の上部に開口して冷気を吐出するとともに前記貯蔵室の左右方向の両端部に配される第１吐出口と、前記貯蔵室の下部に設けられて前記冷却器に戻る冷気が前記貯蔵室から流出する戻り口と、前記循環通路に開口して前記貯蔵室から冷気を吸い込むとともに前記貯蔵室の左右方向の両端部に配される吸込口と、前記循環通路に開口して冷気を吐出するとともに前記貯蔵室の左右方向の中央部に開口する第２吐出口とを備えたことを特徴としている。 Further, in the refrigerator having the above-described configuration, the refrigerator opens at the upper part of the cold air passage and discharges the cold air, and at the lower part of the storage chamber, the first discharge ports disposed at both ends in the left-right direction of the storage chamber. A return port through which the cool air returning to the cooler flows out from the storage chamber, and a suction port that opens into the circulation passage and sucks the cool air from the storage chamber and is arranged at both ends in the left-right direction of the storage chamber And a second discharge port that opens to the circulation passage to discharge cool air and opens to a central portion in the left-right direction of the storage chamber.

この構成によると、冷気通路を流通する冷気は貯蔵室背面の左右方向の両端部に設けた第１吐出口から吐出される。第１吐出口から吐出された冷気は貯蔵室内を降下し、吸込口から循環通路に吸い込まれる。循環通路を流通する冷気は部材に冷熱を伝え、貯蔵室の左右方向の中央部に配された第２吐出口から吐出される。第２吐出口から吐出される冷気は両端部の吸込口に導かれて貯蔵室内の冷気が循環する。また、冷気通路から供給される冷気量に応じて貯蔵室内の冷気が下部の戻り口から流出して冷却器に戻る。 According to this configuration, the cold air flowing through the cold air passage is discharged from the first discharge ports provided at the left and right ends of the rear surface of the storage chamber. The cold air discharged from the first discharge port descends in the storage chamber and is sucked into the circulation passage from the suction port. The cold air flowing through the circulation passage conveys cold heat to the member and is discharged from a second discharge port arranged at the central portion in the left-right direction of the storage chamber. The cool air discharged from the second discharge port is guided to the suction ports at both ends, and the cool air in the storage chamber circulates. Further, the cool air in the storage chamber flows out from the lower return port according to the amount of cool air supplied from the cool air passage and returns to the cooler.

また本発明は、上記構成の冷蔵庫において、貯蔵物を載置する載置棚を設け、前記貯蔵室の背壁と前記載置棚との間に第１吐出口と前記吸込口とを連通させる隙間を形成したことを特徴としている。この構成によると、第１吐出口から吐出される冷気は載置棚の後方に設けた隙間を介して降下し、吸込口に導かれる。 Moreover, this invention provides the mounting shelf which mounts a store thing in the refrigerator of the said structure, and makes a 1st discharge port and the said suction port communicate between the back wall of the said storage chamber, and the said mounting shelf. It is characterized by forming a gap. According to this configuration, the cool air discharged from the first discharge port descends through the gap provided at the rear of the mounting shelf and is guided to the suction port.

また本発明は、上記構成の冷蔵庫において、前記部材の前面及び背面に折曲による凹凸を設けたことを特徴としている。この構成によると、プレス加工や絞り加工等によって部材が曲げられて凹凸が形成される。部材の前面及び背面の結露は流下した際に凹凸の上方に面した面で受けて保水される。 Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, unevenness due to bending is provided on the front surface and the back surface of the member. According to this configuration, the member is bent by pressing or drawing to form irregularities. Condensation on the front and back surfaces of the member is received and retained by the surface facing the top of the irregularities when it flows down.

また本発明は、上記構成の冷蔵庫において、前記部材の背面を流下する結露水を溜める貯水部を前記循環通路の下端に設けたことを特徴としている。この構成によると、部材の背面に発生する結露が流下すると貯水部に溜められる。貯水部に溜まった結露水は徐々に蒸発し、貯蔵室内が保湿される。 Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, a water storage part for storing condensed water flowing down the back surface of the member is provided at a lower end of the circulation passage. According to this structure, when the dew condensation generated on the back surface of the member flows down, it is stored in the water storage section. The condensed water accumulated in the water storage part gradually evaporates, and the inside of the storage room is moisturized.

本発明によると、冷却器からの冷気が通る冷気通路の前面に冷却器を通らずに冷気が循環する循環通路を設け、循環通路を通る冷気に接する部材が貯蔵室の背面の両端部にわたって設けられて循環通路の側壁間の幅と部材の横幅が略等しいので、貯蔵室内の冷気が部材の前面及び背面に広い範囲で接触する。このため、外気流入等によって貯蔵室内の湿度が上昇すると部材の前面及び背面で結露して部材表面が曇り、その後結露が蒸発する。従って、結露面積が広く確保され、貯蔵室内の保湿効果を向上して貯蔵物の乾燥を低減することができる。 According to the present invention, the circulation passage through which the cold air circulates without passing through the cooler is provided on the front surface of the cold air passage through which the cold air from the cooler passes, and the members in contact with the cold air passing through the circulation passage are provided across both ends of the rear surface of the storage chamber. Thus, the width between the side walls of the circulation passage and the lateral width of the member are substantially equal, so that the cool air in the storage chamber contacts the front and back surfaces of the member in a wide range. For this reason, when the humidity in the storage chamber increases due to the inflow of outside air or the like, dew condensation occurs on the front and back surfaces of the member and the member surface becomes cloudy, and then the dew condensation evaporates. Therefore, a wide dew area can be secured, the moisture retention effect in the storage chamber can be improved, and drying of stored items can be reduced.

以下に本発明の実施形態を図面を参照して説明する。図１は一実施形態の冷蔵庫を示す正面図である。冷蔵庫１は上部に冷蔵室２が配され、冷蔵室２の下方には温度切替室３及び製氷室４が左右に並設される。温度切替室３及び製氷室４の下方には冷凍室６が配され、冷凍室６の下方に野菜室５が配されている。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a refrigerator according to an embodiment. The refrigerator 1 is provided with a refrigerator compartment 2 at the top, and below the refrigerator compartment 2, a temperature switching chamber 3 and an ice making chamber 4 are arranged side by side. A freezing room 6 is arranged below the temperature switching room 3 and the ice making room 4, and a vegetable room 5 is arranged below the freezing room 6.

冷蔵室２は回動式の扉２ａにより開閉され、貯蔵物を冷蔵保存する。野菜室５は収納ケース５ｂと一体の引き出し式の扉５ａにより開閉され、冷蔵室２よりも高い室内温度（約８℃）で野菜を冷却保存する。温度切替室３は扉３ａで開閉され、詳細を後述するように、使用者により室温を切り替えられるようになっている。 The refrigerator compartment 2 is opened and closed by a rotating door 2a to store stored items in a refrigerator. The vegetable compartment 5 is opened and closed by a drawer-type door 5a integrated with the storage case 5b, and the vegetables are cooled and stored at a higher room temperature (about 8 ° C.) than the refrigerator compartment 2. The temperature switching chamber 3 is opened and closed by a door 3a, and the room temperature can be switched by the user as will be described in detail later.

冷凍室６は収納ケース６ｂと一体の引き出し式の扉６ａにより開閉され、貯蔵物を冷凍保存する。製氷室４は貯氷容器４ｂと一体の扉４ａにより開閉され、冷凍室６に連通して氷を製氷する。尚、製氷室４及び冷凍室６は氷点以下に維持される。 The freezer compartment 6 is opened and closed by a drawer-type door 6a integrated with the storage case 6b to store the stored items in a frozen state. The ice making chamber 4 is opened and closed by a door 4a integrated with the ice storage container 4b, and communicates with the freezing chamber 6 to make ice. The ice making chamber 4 and the freezing chamber 6 are maintained below the freezing point.

図２は冷蔵庫１の内部を示す正面図である。図３、図４は図２のＡ−Ａ断面図及びＢ−Ｂ断面図を示している。冷蔵室２内の下部には隔離室から成るチルド室２１、小物収納室１０２、水タンク室１０３が左右に並設される。チルド室２１は冷蔵室２内よりも低温の温度帯の例えばチルド温度帯（約０℃）に維持される。チルド室２１に替えて氷温（約−３℃）に維持される氷温室を設けてもよい。水タンク室１０３は製氷用の水タンク１０３ａが着脱自在に収納される。小物収納室１０２は詳細を後述する冷気通路３２の前方に配され、小物ケース１０２ａを有して卵等の小物を収納する。 FIG. 2 is a front view showing the inside of the refrigerator 1. 3 and 4 show the AA and BB sectional views of FIG. In the lower part of the refrigerator compartment 2, a chilled chamber 21, an accessory storage chamber 102, and a water tank chamber 103, which are isolated chambers, are arranged side by side. The chilled chamber 21 is maintained, for example, in a chilled temperature range (about 0 ° C.), which is a temperature range lower than that in the refrigerator compartment 2. An ice greenhouse maintained at an ice temperature (about −3 ° C.) may be provided instead of the chilled chamber 21. In the water tank chamber 103, a water tank 103a for ice making is detachably stored. The accessory storage chamber 102 is disposed in front of a cold air passage 32, which will be described in detail later, and has an accessory case 102a for storing accessories such as eggs.

冷蔵庫１の本体部は外箱１ａと内箱１ｂとの間に発泡断熱材１ｃを充填して形成されている。製氷室４及び温度切替室３と冷蔵室２との間は断熱壁７により隔離され、冷凍室６と野菜室５との間は断熱壁８により隔離される。また、温度切替室３と冷凍室６との間は断熱壁３５により隔離され、温度切替室３と製氷室４との間は縦断熱壁３６により隔離されている。 The main body of the refrigerator 1 is formed by filling a foam heat insulating material 1c between the outer box 1a and the inner box 1b. The ice making chamber 4 and the temperature switching chamber 3 are separated from the refrigerator compartment 2 by a heat insulating wall 7, and the freezer compartment 6 and the vegetable compartment 5 are separated from each other by a heat insulating wall 8. Further, the temperature switching chamber 3 and the freezing chamber 6 are isolated by a heat insulating wall 35, and the temperature switching chamber 3 and the ice making chamber 4 are isolated by a vertical heat insulating wall 36.

発泡断熱材１ｃは外箱１ａと内箱１ｂとの間に充填される際に断熱壁７、８内に同時に充填される。即ち、発泡断熱材１ｃの原液が外箱１ａと内箱１ｂとの間とこれに連通する断熱壁７、８に同時に注入され、一体に発泡される。ウレタン発泡断熱材等の発泡断熱材１ｃを外箱１ａ、内箱１ｂ間と同時に断熱壁７、８に充填することにより、断熱壁７、８を簡単に薄く形成することができる。従って、冷蔵庫１の内容積を広く確保することができる。 When the foam heat insulating material 1c is filled between the outer box 1a and the inner box 1b, the heat insulating walls 7 and 8 are filled simultaneously. That is, the stock solution of the foam heat insulating material 1c is injected simultaneously between the outer box 1a and the inner box 1b and into the heat insulating walls 7 and 8 communicating with the outer box 1a, and is foamed integrally. By filling the heat insulating walls 7 and 8 simultaneously with the space between the outer box 1a and the inner box 1b with the foam heat insulating material 1c such as urethane foam heat insulating material, the heat insulating walls 7 and 8 can be easily formed thin. Therefore, the internal volume of the refrigerator 1 can be secured widely.

冷蔵室２には貯蔵物を載置する複数の載置棚４１が設けられる。本実施形態では載置棚４１が上下に３段設けられる。冷蔵室２の扉２ａには複数の収納ポケット４２が設けられる。野菜室５の背後には機械室５０が設けられ、機械室５０内に圧縮機５７が配される。圧縮機５７には凝縮器、膨張器（いずれも不図示）及び冷却器１１が順に接続され、圧縮機５７の駆動によりイソブタン等の冷媒が循環して冷凍サイクルが構成される。これにより、冷却器１１が冷凍サイクルの低温側となる。 The refrigerator compartment 2 is provided with a plurality of placement shelves 41 on which stored items are placed. In the present embodiment, the mounting shelf 41 is provided in three stages up and down. A plurality of storage pockets 42 are provided on the door 2 a of the refrigerator compartment 2. A machine room 50 is provided behind the vegetable room 5, and a compressor 57 is disposed in the machine room 50. A condenser, an expander (all not shown), and a cooler 11 are connected to the compressor 57 in order, and a refrigerant such as isobutane is circulated by driving the compressor 57 to constitute a refrigeration cycle. Thereby, the cooler 11 becomes the low temperature side of the refrigeration cycle.

冷凍室６の背後には背面板６ｃで仕切られた冷気通路３１が設けられる。詳細を後述するように、冷気通路３１は冷蔵室２の背後に配された冷気通路３２に冷蔵室ダンパ２０を介して連通する。冷気通路３１は仕切板３１ｃにより前部３１ａと後部３１ｂとに仕切られ、後部３１ｂに冷却器１１が配される。冷却器１１は冷媒が流通する冷媒管１１ａが蛇行して形成され、冷媒管１１ａの左右端部がエンドプレート１１ｂにより支持されている。冷媒管１１ａには放熱用の多数のフィン（不図示）が接して設けられている。冷媒管１１ａの上部には気液分離器４５が接続される。 Behind the freezer compartment 6 is provided a cold air passage 31 partitioned by a back plate 6c. As will be described in detail later, the cold air passage 31 communicates with the cold air passage 32 disposed behind the refrigerator compartment 2 via the refrigerator compartment damper 20. The cool air passage 31 is partitioned into a front part 31a and a rear part 31b by a partition plate 31c, and the cooler 11 is arranged in the rear part 31b. The cooler 11 is formed by meandering refrigerant pipes 11a through which refrigerant flows, and left and right ends of the refrigerant pipes 11a are supported by end plates 11b. A large number of fins (not shown) for heat dissipation are provided in contact with the refrigerant pipe 11a. A gas-liquid separator 45 is connected to the upper part of the refrigerant pipe 11a.

冷凍サイクルの低温側となる冷却器１１と冷気通路３１の後部３１ｂを流通する空気とが熱交換して冷気が生成される。冷却器１１が冷凍室６の背面側に配されるため、冷却器１１の冷熱が仕切板３１ｃ及び背面板６ｃを介して冷凍室６側へ放出される。このため、冷凍室６が効率よく冷却され、冷却効率が向上される。 The cooler 11 on the low temperature side of the refrigeration cycle exchanges heat with the air flowing through the rear portion 31b of the cool air passage 31 to generate cool air. Since the cooler 11 is arranged on the back side of the freezer compartment 6, the cold heat of the cooler 11 is released to the freezer compartment 6 side through the partition plate 31c and the back plate 6c. For this reason, the freezer compartment 6 is cooled efficiently and the cooling efficiency is improved.

冷却器１１の下方には冷却器１１を除霜する除霜ヒータ３３が設けられている。除霜ヒータ３３の下方には除霜によるドレン水を受けるドレンパン６３が設けられる。ドレンパン６３にはドレンパイプ６４が設けられ、機械室５０内に配された蒸発皿（不図示）にドレンパイプ６４を介してドレン水が導かれる。 A defrost heater 33 for defrosting the cooler 11 is provided below the cooler 11. Below the defrost heater 33, a drain pan 63 for receiving drain water by defrosting is provided. The drain pan 63 is provided with a drain pipe 64, and drain water is guided to the evaporation tray (not shown) disposed in the machine room 50 through the drain pipe 64.

冷気通路３１内には軸流ファンから成る冷凍室送風機１２が回転軸方向を水平にして配置される。冷気通路３１には冷凍室送風機１２の前方で製氷室４に臨む開口部（不図示）が設けられるとともに、冷凍室６の収納ケース６ｂに臨む吐出口６ｄ、６ｅが設けられる。これにより、冷凍室送風機１２が駆動されると製氷室４及び冷凍室６に冷気が送出される。冷凍室６の下部には冷却器１１の正面に開口して冷却器１１に冷気を戻す戻り口２２が設けられる。 A freezer compartment blower 12 composed of an axial fan is disposed in the cold air passage 31 with the rotational axis direction horizontal. The cold air passage 31 is provided with an opening (not shown) facing the ice making chamber 4 in front of the freezer blower 12 and discharge ports 6d and 6e facing the storage case 6b of the freezer compartment 6. Thereby, when the freezer compartment fan 12 is driven, cold air is sent to the ice making compartment 4 and the freezer compartment 6. In the lower part of the freezer compartment 6, there is provided a return port 22 that opens in front of the cooler 11 and returns cool air to the cooler 11.

冷却器１１は左右方向で製氷室４側に偏って配置され、冷却器１１の側方には冷蔵室２と野菜室５とを連通させる連通路３４が配置される。また、冷蔵室ダンパ２０及び冷凍室送風機１２は冷却器１１と同じ方向に偏って上下方向にほぼ並べて配置される。即ち、冷蔵室ダンパ２０及び冷凍室送風機１２は平面投影において重なるように配置されている。これにより、冷蔵庫１の左右方向の幅を狭くできるとともに、冷気通路３１、３２を短縮して容積効率や送風効率を向上することができる。 The cooler 11 is disposed in the left-right direction so as to be biased toward the ice making chamber 4, and a communication path 34 that connects the refrigerator compartment 2 and the vegetable compartment 5 is disposed on the side of the cooler 11. Further, the refrigerator compartment damper 20 and the freezer compartment fan 12 are arranged in the vertical direction so as to be biased in the same direction as the cooler 11. That is, the refrigerator compartment damper 20 and the freezer compartment fan 12 are arranged so as to overlap in the planar projection. Thereby, while the width | variety of the left-right direction of the refrigerator 1 can be narrowed, the cool air passages 31 and 32 can be shortened and volume efficiency and ventilation efficiency can be improved.

また、温度切替室３の容積を広く確保するため、温度切替室３と製氷室４とを隔離する縦断熱壁３６は図１において左側に偏って配置される。温度切替室３の背後に冷気通路３１の前部３１ａや冷蔵室ダンパ２０を設けると、温度切替室３から冷気通路３１内の冷気に熱が放出される。 Further, in order to secure a large volume of the temperature switching chamber 3, the vertical heat insulating wall 36 that separates the temperature switching chamber 3 and the ice making chamber 4 is arranged to be shifted to the left side in FIG. 1. When the front portion 31 a of the cold air passage 31 and the refrigerator compartment damper 20 are provided behind the temperature switching chamber 3, heat is released from the temperature switching chamber 3 to the cold air in the cold air passage 31.

冷気通路３１を流通する冷気は例えば−２３℃であり、温度切替室３が該冷気よりも高温（例えば、３℃、８℃、５０℃）に制御されていると熱ロスが大きくなる。このため、縦断熱壁３６の後方かそれよりも左側に冷蔵室ダンパ２０や冷気通路３１の前部３１ａを設け、温度切替室３から冷気への熱の放出を防止している。これにより、冷却効率をより向上することができる。 The cold air flowing through the cold air passage 31 is, for example, −23 ° C., and heat loss increases when the temperature switching chamber 3 is controlled to a temperature higher than the cold air (for example, 3 ° C., 8 ° C., 50 ° C.). For this reason, the refrigerator compartment damper 20 and the front part 31a of the cold air passage 31 are provided behind the vertical heat insulating wall 36 or on the left side thereof to prevent heat from being released from the temperature switching chamber 3 to the cold air. Thereby, cooling efficiency can be improved more.

温度切替室３には冷気通路３１から分岐して冷気を導く導入通風路１５が接続される。温度切替室３の後部には温度切替室送風機１８及びヒータ１６が配置される。温度切替室３の左下部には温度切替室吐出ダンパ３７が設けられる。温度切替室吐出ダンパ３７は導入通風路１５内に配置され、温度切替室送風機１８は導入通風路１５の上部に配置される。 The temperature switching chamber 3 is connected to an introduction ventilation path 15 that branches from the cold air passage 31 and guides the cold air. A temperature switching chamber blower 18 and a heater 16 are disposed at the rear of the temperature switching chamber 3. A temperature switching chamber discharge damper 37 is provided at the lower left portion of the temperature switching chamber 3. The temperature switching chamber discharge damper 37 is arranged in the introduction ventilation path 15, and the temperature switching chamber blower 18 is arranged in the upper part of the introduction ventilation path 15.

温度切替室吐出ダンパ３７を開いて温度切替室送風機１８を駆動すると導入通風路１５を介して冷却器１１から冷気が温度切替室３に流入する。温度切替室吐出ダンパ３７の開閉量によって導入通風路１５から温度切替室３に流入する風量が調整される。温度切替室３には、ヒータ１６に加えて底部にパネルヒータを設けてもよい。 When the temperature switching chamber discharge damper 37 is opened and the temperature switching chamber blower 18 is driven, cold air flows from the cooler 11 into the temperature switching chamber 3 through the introduction ventilation path 15. The amount of air flowing into the temperature switching chamber 3 from the introduction ventilation path 15 is adjusted by the opening / closing amount of the temperature switching chamber discharge damper 37. In addition to the heater 16, the temperature switching chamber 3 may be provided with a panel heater at the bottom.

温度切替室３の下部には温度切替室戻りダンパ３８が設けられる。温度切替室戻りダンパ３８は下方に延びる戻り通路１７を開閉し、温度切替室３内の空気は戻り通路１７を介して冷気通路３１に戻るようになっている。 A temperature switching chamber return damper 38 is provided below the temperature switching chamber 3. The temperature switching chamber return damper 38 opens and closes the return passage 17 extending downward, and the air in the temperature switching chamber 3 returns to the cool air passage 31 via the return passage 17.

尚、温度切替室３の室内温度が高温に設定されているときは導入通風路１５や戻り通路１７内の空気が温度切替室３内の空気よりも低温となる。高温の空気は温度切替室３内で上昇するとともに、温度切替室吐出ダンパ３７及び温度切替室戻りダンパ３８が温度切替室３の下部に設けられる。このため、温度切替室３から導入通風路１５や戻り通路１７への熱気の漏れを低減することができる。 Note that when the room temperature of the temperature switching chamber 3 is set to a high temperature, the air in the introduction ventilation path 15 and the return path 17 is lower in temperature than the air in the temperature switching chamber 3. Hot air rises in the temperature switching chamber 3, and a temperature switching chamber discharge damper 37 and a temperature switching chamber return damper 38 are provided in the lower part of the temperature switching chamber 3. For this reason, leakage of hot air from the temperature switching chamber 3 to the introduction ventilation path 15 and the return path 17 can be reduced.

戻り通路１７を流通する空気は冷却器１１の上下方向の中間に設けた流出口１７ａから冷却器１１に戻される。冷凍室戻り口２２を介して冷凍室６から流出する冷気は冷却器１１の下部に戻る。また、野菜室５から冷気が戻り通路４６（図２参照）を介して冷却器１１の下方に戻る。 The air flowing through the return passage 17 is returned to the cooler 11 from an outlet 17a provided in the middle of the cooler 11 in the vertical direction. The cool air flowing out of the freezer compartment 6 through the freezer compartment return port 22 returns to the lower part of the cooler 11. Moreover, cold air | gas returns from the vegetable compartment 5 to the downward direction of the cooler 11 via the return channel | path 46 (refer FIG. 2).

従って、各貯蔵室から流出した冷気は冷却器１１に分散して戻される。このため、各貯蔵室を循環して戻ってきた水分を含む冷気による霜が一部に集中的に発生せずに、冷却器１１全体に分散して発生する。これにより、霜による冷気流れの目詰まりが防止され、冷却器１１の冷却性能低下を防止することができる。 Therefore, the cold air flowing out from each storage chamber is returned to the cooler 11 in a dispersed manner. For this reason, the frost by the cold air containing the water | moisture content which circulated through each store room and returned does not generate | occur | produce intensively, but disperse | distributes and generate | occur | produces in the whole cooler 11. Thereby, clogging of the cold air flow due to frost is prevented, and a decrease in cooling performance of the cooler 11 can be prevented.

また、容積の小さい温度切替室３を流通した冷気は冷却器１１の上部で冷却され、容積の大きい冷蔵室３、野菜室５及び冷凍室６を流通した冷気は冷却器１１の上下方向の全体で冷却される。従って、温度切替室３から流出した冷気が必要以上に冷却器１１と熱交換されず、冷却器１１の熱交換効率を向上することができる。 In addition, the cold air that has flowed through the temperature switching chamber 3 with a small volume is cooled at the upper part of the cooler 11, and the cold air that has flowed through the cold room 3, the vegetable room 5, and the freezer room 6 with a large capacity is Cooled by. Therefore, the cold air flowing out from the temperature switching chamber 3 is not heat exchanged with the cooler 11 more than necessary, and the heat exchange efficiency of the cooler 11 can be improved.

冷蔵室２の背後には冷気通路３２及び循環通路８１が前後に重ねて設けられる。図２には循環通路８１の正面形状が破線Ｄ１で示されており、図５には冷気通路３２の正面形状が破線Ｄ２で示される。また、図６は冷蔵庫１の上面断面図を示している。冷気通路３２の小物収納室１０２よりも上方及び循環通路８１は冷蔵室２の背面に配された冷却パネル７０により一体に形成され、冷気通路３２の前方に循環通路８１が配される。 A cool air passage 32 and a circulation passage 81 are provided behind the refrigerating chamber 2 so as to overlap each other. In FIG. 2, the front shape of the circulation passage 81 is indicated by a broken line D1, and in FIG. 5, the front shape of the cool air passage 32 is indicated by a broken line D2. FIG. 6 is a top sectional view of the refrigerator 1. Above the accessory storage chamber 102 of the cold air passage 32 and the circulation passage 81 are integrally formed by a cooling panel 70 disposed on the back surface of the refrigerator compartment 2, and the circulation passage 81 is disposed in front of the cold air passage 32.

冷却パネル７０は正面形状が矩形に形成され、パネルベース７１及び部材７２から成っている。パネルベース７１は発泡スチロール等の断熱材の成形品から成り、冷気通路３２及び循環通路８１の外形を一体に形成する。 The cooling panel 70 has a rectangular front shape, and includes a panel base 71 and a member 72. The panel base 71 is formed of a molded product of a heat insulating material such as polystyrene foam, and integrally forms the outer shapes of the cold air passage 32 and the circulation passage 81.

部材７２はパネルベース７１の前面に配されて冷蔵室２の左右にわたって設けられ、金属板等の熱良導体により正面形状が略矩形に形成される。部材７２の材料として、アルミニウム、ステンレス鋼、銅、黄銅、メッキ鋼板等を選択することができる。熱伝導率、防錆性、強度、軽さ、価格等を考慮して部材７２をアルミニウムにより形成するとより望ましい。部材７２により循環通路８１の前面が形成され、循環通路８１を流通する冷気は部材７２と接する。 The member 72 is arranged on the front surface of the panel base 71 and is provided over the left and right sides of the refrigerator compartment 2, and the front shape is formed in a substantially rectangular shape by a good heat conductor such as a metal plate. As the material of the member 72, aluminum, stainless steel, copper, brass, plated steel plate, or the like can be selected. It is more desirable that the member 72 is made of aluminum in consideration of thermal conductivity, rust prevention, strength, lightness, price, and the like. The member 72 forms the front surface of the circulation passage 81, and the cold air flowing through the circulation passage 81 is in contact with the member 72.

図４、図５において、冷気通路３２は冷蔵室ダンパ２０から上方に延び、横幅が狭い流入部３２ｃが小物収納室１０２の背後の冷蔵室２下部に設けられる。流入部３２ｃには冷蔵室送風機２３が配される。冷蔵室送風機２３は軸流ファンから成り、冷蔵室ダンパ２０を開いて冷蔵室送風機２３を駆動することによって冷気通路３２に冷気が流通する。 4 and 5, the cold air passage 32 extends upward from the refrigerator compartment damper 20, and an inflow portion 32 c having a narrow lateral width is provided in the lower part of the refrigerator compartment 2 behind the accessory storage chamber 102. A refrigerator compartment fan 23 is disposed in the inflow portion 32c. The refrigerating room blower 23 is composed of an axial fan, and the cold air is circulated through the cold passage 32 by opening the refrigerating room damper 20 and driving the refrigerating room blower 23.

冷蔵室ダンパ２０から冷気通路３２に流入した直後の冷気は極低温（約−２０℃〜−１８℃）になっている。このため、冷気通路３２の下部の庫内側には断熱材１０７が配される。これにより、冷蔵室２の背壁表面の結露を防止することができる。 The cold air immediately after flowing into the cold air passage 32 from the refrigerator compartment damper 20 is extremely low temperature (about −20 ° C. to −18 ° C.). For this reason, the heat insulating material 107 is arranged on the inner side of the lower part of the cold air passage 32. Thereby, dew condensation on the back wall surface of the refrigerator compartment 2 can be prevented.

冷蔵室ダンパ２０の下流側は冷蔵室２の背壁が傾斜し、冷気通路３２の下部の奥行が約１０ｍｍ程度まで絞られる。これにより、冷気通路３２の奥行を狭く形成して冷蔵室２の奥行を広く確保することができる。また、冷蔵室ダンパ２０は一部が正面投影において断熱壁７と重なる位置に配置される。このため、冷蔵室ダンパ２０が冷蔵室２や冷凍室６に突出される量を削減し、冷蔵室２及び冷凍室６を広く形成することができる。 On the downstream side of the refrigerator compartment damper 20, the back wall of the refrigerator compartment 2 is inclined, and the depth of the lower part of the cold air passage 32 is reduced to about 10 mm. Thereby, the depth of the cold air | gas channel | path 32 can be formed narrowly, and the depth of the refrigerator compartment 2 can be ensured widely. Moreover, the refrigerator compartment damper 20 is arrange | positioned in the position which one part overlaps with the heat insulation wall 7 in front projection. For this reason, the amount by which the refrigerator compartment damper 20 protrudes into the refrigerator compartment 2 and the freezer compartment 6 can be reduced, and the refrigerator compartment 2 and the refrigerator compartment 6 can be formed widely.

冷気通路３２は流入部３２ｃの上方で左右に分岐し、右通路３２ａ及び左通路３２ｂを上部に有している。右通路３２ａの側端には上方から順に複数の吐出口７３ａ、７３ｂ、７３ｃが側方に開口して設けられる。左通路３２ｂの側端には上方から順に複数の吐出口７４ａ、７４ｂ、７４ｃが側方に開口して設けられる。これにより、吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃ（第１吐出口）が冷蔵室２の左右方向の両端部に配される。 The cool air passage 32 branches right and left above the inflow portion 32c, and has a right passage 32a and a left passage 32b in the upper portion. A plurality of discharge ports 73a, 73b, and 73c are provided at the side end of the right passage 32a so as to open sideways from the top. A plurality of discharge ports 74a, 74b, and 74c are provided at the side end of the left passage 32b in order from the top and open to the side. Accordingly, the discharge ports 73 a to 73 c and 74 a to 74 c (first discharge ports) are arranged at both ends in the left-right direction of the refrigerator compartment 2.

また、上段の吐出口７３ａ、７４ａは上から１段目の載置棚４１の上方に設けられる。中段の吐出口７３ｂ、７４ｂは上から１段目の載置棚４１と２段目の載置棚４１との間に設けられる。下段の吐出口７３ｃ、７４ｃは上から２段目の載置棚４１と３段目の載置棚４１との間に設けられる。 Further, the upper discharge ports 73a and 74a are provided above the first stage mounting shelf 41 from the top. The middle-stage discharge ports 73b and 74b are provided between the first-stage mounting shelf 41 and the second-stage mounting shelf 41 from the top. The lower discharge ports 73c and 74c are provided between the second-stage mounting shelf 41 and the third-stage mounting shelf 41 from the top.

中段及び下段の吐出口７３ｂ、７３ｃ、７４ｂ、７４ｃの開口面積は上段の吐出口７３ａ、７４ａの開口面積よりも小さくなっている。これにより、冷気通路３２の冷気流入側に近く、冷蔵室２下部に配された戻り口２ｄに近い下方の吐出口７３ｂ、７３ｃ、７４ｂ、７４ｃから吐出される冷気量が制限される。従って、冷気通路３２の上部まで冷気を導くことができる。 The opening areas of the middle and lower discharge ports 73b, 73c, 74b, and 74c are smaller than the opening areas of the upper discharge ports 73a and 74a. Accordingly, the amount of cool air discharged from the lower discharge ports 73b, 73c, 74b, and 74c close to the cool air inflow side of the cool air passage 32 and close to the return port 2d arranged in the lower part of the refrigerator compartment 2 is limited. Accordingly, the cold air can be guided to the upper part of the cold air passage 32.

また、右通路３２ａの下端にはチルド室２１に冷気を吐出する吐出口７５、７６が設けられる。冷蔵室ダンパ２０から冷気通路３２に流入した直後の冷気が吐出口７５、７６からチルド室２１に吐出されるため、チルド室２１を低温に維持することができる。 Discharge ports 75 and 76 that discharge cool air to the chilled chamber 21 are provided at the lower end of the right passage 32a. Since the cold air immediately after flowing into the cold air passage 32 from the refrigerator compartment damper 20 is discharged from the discharge ports 75 and 76 to the chilled chamber 21, the chilled chamber 21 can be maintained at a low temperature.

チルド室２１の背面下部には冷蔵室２の冷気が流出する戻り口２ｄが設けられる。戻り口２ｄからは冷蔵室２と野菜室５とを連通させる連通路３４が導出される。連通路３４の上部は戻り口２ｄに面してチルド室２１の左端から右端に延びる冷気戻り部３４ａが設けられ、連通路３４の下部は冷気戻り部３４ａの右部から下方に延びる。 A return port 2d through which cold air from the refrigerator compartment 2 flows out is provided at the lower back of the chilled chamber 21. From the return port 2d, a communication passage 34 for communicating the refrigerator compartment 2 and the vegetable compartment 5 is led out. The upper part of the communication path 34 faces the return port 2d and is provided with a cold air return part 34a extending from the left end to the right end of the chilled chamber 21, and the lower part of the communication path 34 extends downward from the right part of the cold air return part 34a.

連通路３４の下端は野菜室５に開口する流入口５ｃが設けられる。野菜室５の上部には野菜室５の前部及び冷気通路３１の正面に開口して冷却器１１の下方に冷気を戻す戻り通路４６（図２参照）が設けられる。 An inflow port 5 c that opens to the vegetable compartment 5 is provided at the lower end of the communication path 34. A return passage 46 (see FIG. 2) is provided in the upper part of the vegetable compartment 5 so as to open the front of the vegetable compartment 5 and the front of the cold air passage 31 and return the cold air below the cooler 11.

図２、図３において、循環通路８１は冷却パネル７０によって冷蔵室２の背面に形成される背面部８１ａと、冷蔵室２の天井面に形成される天井部８１ｄとを有している。天井部８１ｄは前後に延びて設けられる。天井部８１ｄの後部には循環送風機８５が配され、前端に吐出口８４（第２吐出口）が設けられる。循環送風機８５と吐出口８４との間にはイオンを発生するイオン発生装置８６が配される。 2 and 3, the circulation passage 81 has a back surface portion 81 a formed on the back surface of the refrigerator compartment 2 by the cooling panel 70 and a ceiling portion 81 d formed on the ceiling surface of the refrigerator compartment 2. The ceiling portion 81d is provided extending in the front-rear direction. A circulation blower 85 is disposed at the rear of the ceiling 81d, and a discharge port 84 (second discharge port) is provided at the front end. An ion generator 86 that generates ions is disposed between the circulation fan 85 and the discharge port 84.

図７は天面部８１ｄの上面図を示している。天井部８１ｄは冷蔵室２の左右方向の中央部に配され、前端に吐出口８４が開口する。循環送風機８５は遠心ファンから成り、図中、左方に偏った位置から排気する。このため、イオン発生装置８６は左方に偏って配置される。 FIG. 7 shows a top view of the top surface portion 81d. The ceiling part 81d is arranged in the center part in the left-right direction of the refrigerator compartment 2, and the discharge port 84 opens at the front end. The circulation fan 85 is composed of a centrifugal fan and exhausts air from a position biased to the left in the drawing. For this reason, the ion generator 86 is biased to the left.

イオン発生装置８６は高圧電圧の印加によりイオンを発生する電極８６ａ、８６ｂを有し、電極８６ａ、８６ｂが天井部８１ｄを通る冷気に面して配されている。イオン発生装置８６を循環送風機８５と吐出口８４との間に配置することにより循環送風機８５との衝突によるイオンの消滅を防止することができる。また、イオンを発生する電極を天井部８１ｄに配置してイオン発生装置８６の電源部等を別の位置に配置してもよい。 The ion generator 86 includes electrodes 86a and 86b that generate ions when a high voltage is applied, and the electrodes 86a and 86b are arranged facing cold air passing through the ceiling portion 81d. By disposing the ion generator 86 between the circulation fan 85 and the discharge port 84, the disappearance of ions due to the collision with the circulation fan 85 can be prevented. In addition, an electrode for generating ions may be disposed on the ceiling portion 81d, and the power supply unit of the ion generator 86 may be disposed at another position.

イオン発生装置８６の電極８６ａ、８６ｂには交流波形またはインパルス波形から成る電圧が印加される。電極８６ａには正電圧が印加され、電離により発生するイオンが空気中の水分と結合して主としてＨ⁺（Ｈ₂Ｏ）ｍから成る電荷が正のクラスタイオンを発生する。電極８６ｂには負電圧が印加され、電離により発生するイオンが空気中の水分と結合して主としてＯ₂ ^-（Ｈ₂Ｏ）ｎから成る電荷が負のクラスタイオンを発生する。ここで、ｍ、ｎは任意の自然数である。Ｈ⁺（Ｈ₂Ｏ）ｍ及びＯ₂ ^-（Ｈ₂Ｏ）ｎは空気中の浮遊菌や臭い成分及び貯蔵物の付着菌の表面で凝集してこれらを取り囲む。 A voltage having an AC waveform or an impulse waveform is applied to the electrodes 86a and 86b of the ion generator 86. A positive voltage is applied to the electrode 86a, and ions generated by ionization combine with moisture in the air to generate positively clustered ions mainly composed of H ⁺ (H ₂ O) m. A negative voltage is applied to the electrode 86b, and ions generated by ionization combine with moisture in the air to generate negatively clustered ions mainly composed of O ₂ ⁻ (H ₂ O) n. Here, m and n are arbitrary natural numbers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n agglomerate and surround the surface of airborne bacteria, odorous components, and stored bacteria.

そして、式（１）〜（３）に示すように、衝突により活性種である［・ＯＨ］（水酸基ラジカル）やＨ₂Ｏ₂（過酸化水素）を微生物等の表面上で凝集生成して浮遊菌や臭い成分等を破壊する。ここで、ｍ’、ｎ’は任意の自然数である。従って、プラスイオン及びマイナスイオンを発生して吐出口８４から吐出することにより室内の殺菌及び臭い除去を行うことができる。 Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria and odor components. Here, m ′ and n ′ are arbitrary natural numbers. Accordingly, by generating positive ions and negative ions and discharging them from the discharge port 84, it is possible to sterilize the room and remove odors.

Ｈ⁺(Ｈ₂Ｏ)ｍ＋Ｏ₂ ^-(Ｈ₂Ｏ)ｎ→・ＯＨ＋1/2Ｏ₂＋(ｍ＋ｎ)Ｈ₂Ｏ・・・（１）
Ｈ⁺(Ｈ₂Ｏ)ｍ＋Ｈ⁺(Ｈ₂Ｏ)ｍ’＋Ｏ₂ ^-(Ｈ₂Ｏ)ｎ＋Ｏ₂ ^-(Ｈ₂Ｏ)ｎ’
→ 2・ＯＨ＋Ｏ₂＋(ｍ＋ｍ'＋ｎ＋ｎ')Ｈ₂Ｏ・・・（２）
Ｈ⁺(Ｈ₂Ｏ)ｍ＋Ｈ⁺(Ｈ₂Ｏ)ｍ’＋Ｏ₂ ^-(Ｈ₂Ｏ)ｎ＋Ｏ₂ ^-(Ｈ₂Ｏ)ｎ’
→ Ｈ₂Ｏ₂＋Ｏ₂＋(ｍ＋ｍ'＋ｎ＋ｎ')Ｈ₂Ｏ・・・（３） H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
^{_{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
^{_{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

背面部８１ａは上方に冷気が流通し、左右の側壁間の幅が部材７２の横幅に略等しい。背面部８１ａの右側壁には上方から順に吸込口８２ａ、８２ｂ、８２ｃ、８２ｄが側方に向かって開口する。背面部８１ａの左側壁には上方から順に吸込口８３ａ、８３ｂ、８３ｃ、８３ｄが側方に向かって開口する。吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄから冷蔵室２内の冷気が循環通路８１に吸い込まれる。 Cold air flows upward in the back surface portion 81 a, and the width between the left and right side walls is substantially equal to the lateral width of the member 72. Suction ports 82a, 82b, 82c, and 82d are opened in the right side wall of the back surface portion 81a in order from the upper side. Suction ports 83a, 83b, 83c, 83d are opened in the left side wall of the back surface portion 81a in order from the upper side. Cold air in the refrigerator compartment 2 is sucked into the circulation passage 81 from the suction ports 82a to 82d and 83a to 83d.

また、上段の吸込口８２ａ、８３ａは上から１段目の載置棚４１の上方に設けられる。吐出口８２ｂ、８３ｂは上から１段目の載置棚４１と２段目の載置棚４１との間に設けられる。吐出口８２ｃ、８３ｃは上から２段目の載置棚４１と３段目の載置棚４１との間に設けられる。下段の吐出口８２ｄ、８３ｄは上から３段目の載置棚４１の下方に設けられる。 The upper suction ports 82a and 83a are provided above the first mounting shelf 41 from the top. The discharge ports 82b and 83b are provided between the first stage mounting shelf 41 and the second stage mounting shelf 41 from the top. The discharge ports 82c and 83c are provided between the second stage mounting shelf 41 and the third stage mounting shelf 41 from the top. Lower discharge ports 82d and 83d are provided below the mounting shelf 41 in the third row from the top.

また、天面部８１ｄには循環送風機８５の吸気側に対向して吸込口８７が設けられる。吸込口８７は吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄよりも開口面積が狭くなっている。例えば、吸込口８７の開口面積は２ｍｍ×１００ｍｍ程度に形成され、吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄの開口面積は８ｍｍ×５０ｍｍ〜８ｍｍ×９０ｍｍ程度に形成される。 In addition, a suction port 87 is provided in the top surface portion 81d so as to face the suction side of the circulation fan 85. The suction port 87 has a smaller opening area than the suction ports 82a to 82d and 83a to 83d. For example, the opening area of the suction port 87 is formed to about 2 mm × 100 mm, and the opening areas of the suction ports 82 a to 82 d and 83 a to 83 d are formed to about 8 mm × 50 mm to 8 mm × 90 mm.

これにより、上段の吐出口７３ａ、７４ａから左右方向の中央部に配される吸込口８７への冷気の流入を抑制するとともに、イオン発生装置８６により多くの湿った冷気を供給することができる。 Accordingly, it is possible to suppress the inflow of cold air from the upper discharge ports 73a and 74a to the suction port 87 disposed in the central portion in the left-right direction, and to supply much moist cool air to the ion generator 86.

図６に示すように、載置棚４１の後端と冷蔵室２の背面との間には冷却パネル７０の側方に隙間８８が形成される。これにより、吐出口７３ａ〜７３ｃと吸込口８２ａ〜８２ｄとの間及び吐出口７４ａ〜７４ｃと吸込口８３ａ〜８３ｄとの間に隙間８８によるダクトが形成される。 As shown in FIG. 6, a gap 88 is formed on the side of the cooling panel 70 between the rear end of the mounting shelf 41 and the back surface of the refrigerator compartment 2. Thereby, the duct by the clearance gap 88 is formed between the discharge ports 73a-73c and the suction ports 82a-82d and between the discharge ports 74a-74c and the suction ports 83a-83d.

上記構成の冷蔵庫１において、冷凍室送風機１２が駆動されると冷却器１１で生成された冷気は製氷室４に吐出されるとともに、吐出口６ｄ、６ｅを介して冷凍室６に吐出される。製氷室４に吐出された冷気は製氷室４を流通し、冷凍室６に吐出された冷気と混合して冷凍室６を流通する。製氷室４及び冷凍室６を流通した冷気は冷凍室戻り口２２から流出して冷却器１１に戻る。これにより、製氷室４及び冷凍室６内が冷却される。 In the refrigerator 1 having the above configuration, when the freezer blower 12 is driven, the cold air generated by the cooler 11 is discharged into the ice making chamber 4 and is discharged into the freezer compartment 6 through the discharge ports 6d and 6e. The cold air discharged into the ice making chamber 4 circulates through the ice making chamber 4, mixes with the cold air discharged into the freezing chamber 6, and flows through the freezing chamber 6. The cold air flowing through the ice making chamber 4 and the freezer compartment 6 flows out from the freezer return port 22 and returns to the cooler 11. As a result, the ice making chamber 4 and the freezing chamber 6 are cooled.

冷蔵室ダンパ２０が開かれると、冷蔵室送風機２３及び循環送風機８５が駆動される。この時、冷蔵室送風機２３の風速は循環送風機８５の風速よりも低く設定される。冷蔵室送風機２３の駆動によって冷凍室送風機１２の排気側で分岐した冷気が冷気通路３２を流通する。冷気通路３２を流通する冷気は右通路３２ａと左通路３２ｂとに分岐する。右通路３２ａを通る冷気の一部は矢印Ａ１（図５参照）に示すように吐出口７５、７６を介してチルド室２１へ吐出される。チルド室２１を流通した冷気は戻り口２ｄから流出する。 When the refrigerator compartment damper 20 is opened, the refrigerator compartment fan 23 and the circulation fan 85 are driven. At this time, the wind speed of the refrigerator compartment fan 23 is set lower than the wind speed of the circulation fan 85. The cold air branched on the exhaust side of the freezer compartment fan 12 by the driving of the refrigerator compartment fan 23 circulates in the cold passage 32. The cold air flowing through the cold air passage 32 branches into a right passage 32a and a left passage 32b. A part of the cold air passing through the right passage 32a is discharged into the chilled chamber 21 through the discharge ports 75 and 76 as shown by an arrow A1 (see FIG. 5). The cold air flowing through the chilled chamber 21 flows out from the return port 2d.

また、右通路３２ａ及び左通路３２ｂを流通する冷気は吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃを介して矢印Ａ２（図５、図６参照）に示すように冷蔵室２に吐出される。この時、冷蔵室送風機２３の風速が低いため、吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから側方に向かって吐出された冷気は冷蔵室２の側壁を伝って前方に流通する。また、吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから吐出された冷気の一部は載置棚４１後方の隙間８８を介して降下する。 Moreover, the cold air | gas which distribute | circulates the right channel | path 32a and the left channel | path 32b is discharged to the refrigerator compartment 2 as shown to arrow A2 (refer FIG. 5, FIG. 6) via discharge port 73a-73c, 74a-74c. At this time, since the wind speed of the refrigerating room blower 23 is low, the cold air discharged from the discharge ports 73a to 73c and 74a to 74c toward the side flows along the side wall of the refrigerating room 2 to the front. Further, some of the cool air discharged from the discharge ports 73a to 73c and 74a to 74c descends through the gap 88 behind the mounting shelf 41.

吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから側壁に沿って前方に流通する冷気は載置棚４１上の貯蔵物を周囲から冷却し、載置棚４１の前方を側壁に沿って降下する。そして、吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄ及び戻り口２ｄに導かれる。戻り口２ｄに導かれる冷気の一部は小物収納室１０２の貯蔵物や水タンク室１０３の水タンク１０３ａを冷却する。 The cool air flowing forward along the side wall from the discharge ports 73a to 73c and 74a to 74c cools the stored items on the mounting shelf 41 from the surroundings, and descends the front of the mounting shelf 41 along the side wall. And it is guide | induced to the suction inlets 82a-82d, 83a-83d, and the return port 2d. A part of the cool air introduced to the return port 2 d cools the stored items in the accessory storage chamber 102 and the water tank 103 a in the water tank chamber 103.

載置棚４１の前方を降下する冷気の一部及び隙間８８を降下した冷気は冷蔵室２内の湿った冷気と混合される。そして、水分を含んだ冷気が矢印Ａ３（図２、図６参照）に示すように吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄから循環通路８１に吸い込まれる。循環通路８１に吸い込まれた冷気は循環通路８１内を上昇する。また、吸込口８７から冷蔵室２内の冷気が矢印Ａ４（図３参照）に示すように循環通路８１の天面部８１ｄに吸い込まれる。 A part of the cool air descending in front of the mounting shelf 41 and the cool air descending the gap 88 are mixed with the moist cool air in the refrigerator compartment 2. Then, the cold air containing moisture is sucked into the circulation passage 81 from the suction ports 82a to 82d and 83a to 83d as indicated by an arrow A3 (see FIGS. 2 and 6). The cold air sucked into the circulation passage 81 rises in the circulation passage 81. Further, the cold air in the refrigerator compartment 2 is sucked into the top surface portion 81d of the circulation passage 81 as shown by an arrow A4 (see FIG. 3) from the suction port 87.

循環通路８１を流通する冷気はイオン発生装置８６により発生したイオンが含まれる。イオンを含んだ冷気は矢印Ａ５（図３、図７参照）に示すように循環通路８１の吐出口８４から冷蔵室２に吐出される。この時、吐出口８４から上段のドアポケット４２と載置棚４１との間に向かって斜め下方に冷気が吐出される。これにより、ドアポケット４２の内部を冷却及び除菌し、イオンを含んだ冷気が載置棚４１の前方を降下する。循環通路８１を流通する冷気中の水分が多くなっているためイオンが水分子との結合によってクラスタ化して消滅しにくくなり、冷蔵室２の下方まで正負のイオンが行き届く。 The cold air flowing through the circulation passage 81 includes ions generated by the ion generator 86. Cold air containing ions is discharged from the discharge port 84 of the circulation passage 81 to the refrigerator compartment 2 as shown by an arrow A5 (see FIGS. 3 and 7). At this time, cool air is discharged obliquely downward from the discharge port 84 toward the upper door pocket 42 and the mounting shelf 41. Thereby, the inside of the door pocket 42 is cooled and sterilized, and cold air containing ions descends in front of the mounting shelf 41. Since the moisture in the cold air flowing through the circulation passage 81 is increased, the ions are clustered by binding with water molecules and are not easily lost, and the positive and negative ions reach the lower part of the refrigerator compartment 2.

吐出口８４から冷蔵室２に吐出された冷気は載置棚４１の前方を降下し、戻り口２ｄに導かれるとともに一部が吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄに導かれる。これにより、循環通路８１によって冷蔵室２内の冷気が冷却器１１を通らずに循環する。また、吐出口８４は冷蔵室２の左右方向の中央部で開口するため、天面の中央部から吐出された冷気が左右方向の両端部に配された吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄに導かれる。これにより、イオン及び水分を含む冷気が冷蔵室２の下部後方まで行き渡り、冷蔵室２全体が冷却及び除菌される。 The cold air discharged from the discharge port 84 to the refrigerator compartment 2 descends in front of the mounting shelf 41 and is guided to the return port 2d and partly to the suction ports 82a to 82d and 83a to 83d. Thereby, the cool air in the refrigerator compartment 2 circulates through the circulation passage 81 without passing through the cooler 11. Moreover, since the discharge port 84 opens in the center part of the left-right direction of the refrigerator compartment 2, the cold air discharged from the center part of the top | upper surface is in the suction ports 82a-82d and 83a-83d distribute | arranged to the both ends of the left-right direction. Led. Thereby, cold air containing ions and moisture spreads to the lower rear of the refrigerator compartment 2, and the entire refrigerator compartment 2 is cooled and sterilized.

また、循環通路８１を流通する冷気や吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから吐出された冷気の冷熱は部材７２に伝えられる。部材７２は熱伝導性が高いため温度が均一化され、冷蔵室２の背面全体から冷熱が放出される。これにより、冷蔵室２の温度分布を均一化することができる。 Further, the cold air flowing through the circulation passage 81 and the cold heat discharged from the discharge ports 73 a to 73 c and 74 a to 74 c are transmitted to the member 72. Since the member 72 has high thermal conductivity, the temperature is made uniform, and cold heat is released from the entire back surface of the refrigerator compartment 2. Thereby, the temperature distribution of the refrigerator compartment 2 can be equalized.

更に、扉２ａを開いて外気が冷蔵室２内に流入した際に部材７２の表面は外気の水分が結露して曇った状態になる。結露した水分は冷気の循環によってその後蒸発し、冷蔵室２内に放出される。従って、部材７２によって冷蔵室２が保湿される。この時、循環通路８１の背面部８１ａに面した部材７２の背面側にも結露が発生する。部材７２は冷蔵室２の左右にわたって設けられ、循環通路８の背面部８１ａの両側壁間の幅が部材７２の横幅に略等しい。このため、結露面積が広く確保され、保湿効果を向上することができる。 Furthermore, when the door 2a is opened and the outside air flows into the refrigerator compartment 2, the surface of the member 72 becomes cloudy due to condensation of outside water. The condensed moisture is then evaporated by the circulation of cold air and released into the refrigerator compartment 2. Therefore, the refrigerator 72 is moisturized by the member 72. At this time, dew condensation also occurs on the back surface side of the member 72 facing the back surface portion 81 a of the circulation passage 81. The member 72 is provided across the left and right sides of the refrigerator compartment 2, and the width between both side walls of the back surface portion 81 a of the circulation passage 8 is substantially equal to the lateral width of the member 72. For this reason, a dew condensation area is ensured widely and a moisturizing effect can be improved.

部材７２の前面及び背面に折曲による凹凸を設けると、部材７２上を流下する結露水を凹凸の上方に面した面に溜めて保湿効果をより向上することができる。凹凸はプレス加工や絞り加工等によって折曲により容易に形成することができる。また、背面部８１ａの下端に結露水を溜める貯水部（不図示）を設けても同様に、部材７２を流下する結露水を貯水部に溜めて保湿効果をより向上することができる。 When unevenness due to bending is provided on the front surface and the back surface of the member 72, the dew condensation water flowing down on the member 72 can be accumulated on the surface facing the upper surface of the unevenness to further improve the moisturizing effect. Unevenness can be easily formed by bending by pressing or drawing. Further, even if a water storage part (not shown) that stores condensed water is provided at the lower end of the back surface part 81a, the moisture retaining effect can be further improved by storing the condensed water flowing down the member 72 in the water storage part.

戻り口２ｄはチルド室２１の左方に偏って配置され、冷蔵室２の左右方向の中央部近傍に配される。このため、左右方向の両端部の吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから戻り口２ｄに導かれる冷気によって冷蔵室２をより均一に冷却することができる。 The return port 2d is arranged to be deviated to the left of the chilled chamber 21 and is arranged in the vicinity of the central portion in the left-right direction of the refrigerator compartment 2. For this reason, the refrigerator compartment 2 can be cooled more uniformly by the cool air led to the return port 2d from the discharge ports 73a to 73c and 74a to 74c at both ends in the left-right direction.

戻り口２ｄを介して冷蔵室２から流出する冷気は連通路３４を通り、流入口５ｃから野菜室５に流入する。この時、流入口５ｃが野菜室２の上方に設けられるため連通路３４が短く形成され、圧力損失を小さくすることができる。野菜室５に流入した冷気は野菜室５内を流通し、戻り通路４６を介して冷却器１１に戻る。これにより、冷蔵室２及び野菜室５内が冷却され、設定温度になると冷蔵室ダンパ２０が閉じられて冷蔵室送風機２３及び循環送風機８５が停止される。 The cold air flowing out of the refrigerator compartment 2 through the return port 2d passes through the communication path 34 and flows into the vegetable compartment 5 from the inlet 5c. At this time, since the inflow port 5c is provided above the vegetable compartment 2, the communication path 34 is formed short, and the pressure loss can be reduced. The cold air flowing into the vegetable compartment 5 flows through the vegetable compartment 5 and returns to the cooler 11 via the return passage 46. Thereby, the inside of the refrigerator compartment 2 and the vegetable compartment 5 is cooled, and when it reaches preset temperature, the refrigerator compartment damper 20 is closed and the refrigerator compartment fan 23 and the circulation fan 85 are stopped.

また、温度切替室送風機１８の駆動により、冷凍室送風機１２の排気側で分岐した冷気は温度切替室吐出ダンパ３７を介して温度切替室３に流入する。温度切替室３に流入した冷気は温度切替室３内を流通して温度切替室戻りダンパ３８から流出し、戻り通路１７を介して冷却器１１に戻る。これにより、温度切替室３内が冷却される。 In addition, the cold air branched on the exhaust side of the freezer compartment fan 12 flows into the temperature change chamber 3 via the temperature change chamber discharge damper 37 by driving the temperature change chamber fan 18. The cold air that has flowed into the temperature switching chamber 3 flows through the temperature switching chamber 3, flows out of the temperature switching chamber return damper 38, and returns to the cooler 11 through the return passage 17. Thereby, the inside of the temperature switching chamber 3 is cooled.

前述のように、温度切替室３は使用者の操作により室内温度を切り替えることができるようになっている。温度切替室３の動作モードは温度帯に応じてワイン（８℃）、冷蔵（３℃）、チルド（０℃）、ソフト冷凍（−８℃）、冷凍（−１５℃）の各冷却モードが設けられる。 As described above, the temperature switching chamber 3 can switch the room temperature by a user's operation. The operation modes of the temperature switching chamber 3 are wine (8 ° C.), refrigeration (3 ° C.), chilled (0 ° C.), soft freezing (−8 ° C.), and freezing (−15 ° C.) depending on the temperature zone. Provided.

これにより、使用者は所望の温度で貯蔵物を冷却保存できる。室内温度の切り替えは温度切替室吐出ダンパ３７を開く量を可変して行うことができる。尚、例えば冷凍の室内温度から冷蔵の室内温度に切り替える際にヒータ１６に通電して昇温してもよい。これにより、迅速に所望の室内温度に切り替えることができる。 Thereby, the user can preserve | save the stored item at the desired temperature. The room temperature can be switched by varying the amount of opening of the temperature switching chamber discharge damper 37. For example, the heater 16 may be energized to switch the temperature from the refrigerated room temperature to the refrigerated room temperature. Thereby, it can switch to desired room temperature rapidly.

ヒータ１６に通電することにより、温度切替室３の室内温度を貯蔵物を冷却保存する低温側から常温よりも高温の高温側に切り替えることができる。これにより、調理済み加熱食品の一時的な保温や温調理等を行うことができる。 By energizing the heater 16, the room temperature of the temperature switching chamber 3 can be switched from a low temperature side where the stored items are cooled and stored to a high temperature side higher than normal temperature. Thereby, temporary heat insulation, warm cooking, etc. of the cooked heated food can be performed.

高温側の室内温度は、主な食中毒菌の発育温度が３０℃〜４５℃であるため、ヒータ容量の公差や温度切替室３内の温度分布等を考慮して５０℃以上にするとよい。これにより、食中毒菌の繁殖を防止できる。 Since the growth temperature of the main food poisoning bacteria is 30 ° C. to 45 ° C., the indoor temperature on the high temperature side is preferably set to 50 ° C. or more in consideration of the tolerance of the heater capacity, the temperature distribution in the temperature switching chamber 3, and the like. Thereby, propagation of food poisoning bacteria can be prevented.

また、冷蔵庫に用いられる一般的な樹脂製部品の耐熱温度が８０℃であるため、高温側の室内温度を８０℃以下にすると安価に実現することができる。加えて、食中毒菌を滅菌するためには、例えば腸管出血性大腸菌（病原性大腸菌Ｏ１５７）の場合では７５℃で１分間の加熱が必要である。従って、高温側の室内温度を７５℃〜８０℃にするとより望ましい。 Moreover, since the heat-resistant temperature of the general resin parts used for a refrigerator is 80 degreeC, when the room temperature of a high temperature side shall be 80 degrees C or less, it can implement | achieve cheaply. In addition, in order to sterilize food poisoning bacteria, for example, in the case of enterohemorrhagic E. coli (pathogenic E. coli O157), heating at 75 ° C. for 1 minute is required. Therefore, it is more desirable to set the indoor temperature on the high temperature side to 75 ° C. to 80 ° C.

以下は５５℃での食中毒菌の滅菌に関する試験結果である。試験サンプルは初期状態で大腸菌２．４×１０³ＣＦＵ／ｍＬ、黄色ブドウ球菌２．０×１０³ＣＦＵ／ｍＬ、サルモネラ２．１×１０³ＣＦＵ／ｍＬ、腸炎ビブリオ１．５×１０³ＣＦＵ／ｍＬ、セレウス４．０×１０³ＣＦＵ／ｍＬを含んでいる。この試験サンプルを４０分間で３℃から５５℃に加温し、５５℃で３．５時間保温後、８０分間で５５℃から３℃に戻して再度各菌の量を調べた。その結果、いずれの菌も１０ＣＦＵ／ｍＬ以下（検出せず）のレベルまで減少していた。従って、温度切替室３の高温側の設定温度を５５℃としても充分滅菌効果がある。 The following are test results on sterilization of food poisoning bacteria at 55 ° C. In the initial state, E. coli 2.4 × 10 ³ CFU / mL, Staphylococcus aureus 2.0 × 10 ³ CFU / mL, Salmonella 2.1 × 10 ³ CFU / mL, Vibrio parahaemolyticus 1.5 × 10 ³ CFU / ML, Cereus 4.0 × 10 ³ CFU / mL. This test sample was heated from 3 ° C. to 55 ° C. over 40 minutes, kept at 55 ° C. for 3.5 hours, then returned from 55 ° C. to 3 ° C. over 80 minutes, and the amount of each bacterium was examined again. As a result, all the bacteria were reduced to a level of 10 CFU / mL or less (not detected). Therefore, even if the set temperature on the high temperature side of the temperature switching chamber 3 is 55 ° C., there is a sufficient sterilization effect.

本実施形態によると、冷却器１１からの冷気が通る冷気通路３２の前面に冷却器１１を通らずに冷気が循環する循環通路８１を設け、循環通路８１を通る冷気に接する部材７２が冷蔵室２の背面の両端部にわたって設けられて循環通路８１の側壁間の幅と部材７２の横幅が略等しいので、冷蔵室２内の冷気が部材４２の前面及び背面に広い範囲で接触する。このため、外気流入等によって冷蔵室２内の湿度が上昇すると部材４２の前面及び背面で結露して部材４２の表面が曇り、その後結露が蒸発する。従って、冷蔵室２内を保湿することができ、貯蔵物の乾燥を低減することができる。 According to the present embodiment, the circulation passage 81 through which the cold air circulates without passing through the cooler 11 is provided in the front surface of the cold air passage 32 through which the cold air from the cooler 11 passes, and the member 72 in contact with the cold air passing through the circulation passage 81 is the refrigerator compartment. 2, the width between the side walls of the circulation passage 81 and the width of the member 72 are substantially equal, so that the cold air in the refrigerator compartment 2 comes into contact with the front surface and the back surface of the member 42 in a wide range. For this reason, when the humidity in the refrigerator compartment 2 rises due to inflow of outside air or the like, dew condensation occurs on the front and back surfaces of the member 42 and the surface of the member 42 becomes cloudy, and then dew condensation evaporates. Therefore, the inside of the refrigerator compartment 2 can be moisturized, and the drying of stored items can be reduced.

また、冷気通路３２と循環通路８１とを前後に重ねて配置したので、吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃ（第１吐出口）を背面の左右方向の両端部に設けるとともに、吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄを左右方向の両端部に設けることができる。これにより、吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄから吸い込まれる湿った冷蔵室２内の冷気が吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから吐出される乾いた冷気に混合され、冷蔵室２の全体を流通する。従って、乾燥した冷気が貯蔵物に直接接触する量を削減し、貯蔵物の乾燥をより低減することができる。 In addition, since the cold air passage 32 and the circulation passage 81 are disposed so as to overlap each other, the discharge ports 73a to 73c and 74a to 74c (first discharge ports) are provided at both ends in the left-right direction on the back surface, and the suction ports 82a to 82a are provided. 82d and 83a to 83d can be provided at both ends in the left-right direction. Thereby, the cold air in the damp refrigerating chamber 2 sucked from the suction ports 82a to 82d and 83a to 83d is mixed with the dry cold air discharged from the discharge ports 73a to 73c and 74a to 74c, and the whole refrigerating chamber 2 is Circulate. Accordingly, it is possible to reduce the amount of dry cool air that comes into direct contact with the stored product, and to further reduce the drying of the stored product.

また、吐出口８４（第２吐出口）が冷蔵室２の左右方向の中央部に配されるため、吐出口８４から吐出された冷気が両端の吸込口８２ａ、８２ｂ、８３ａ、８３ｂに導かれて冷蔵室２全体に冷気が流通する。従って、冷蔵室２の温度を均一にすることができる。尚、吐出口８４は少なくとも冷蔵室２の左右方向の中央部が開口していればよく、中央部から左右に広がって形成してもよい。 In addition, since the discharge port 84 (second discharge port) is arranged in the center in the left-right direction of the refrigerator compartment 2, the cold air discharged from the discharge port 84 is guided to the suction ports 82a, 82b, 83a, 83b at both ends. Thus, cold air circulates throughout the refrigerator compartment 2. Therefore, the temperature of the refrigerator compartment 2 can be made uniform. In addition, the discharge port 84 should just open at least the center part of the left-right direction of the refrigerator compartment 2, and may be spread and formed from the center part to right and left.

また、冷蔵室２の背壁と載置棚４１との間に吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃと吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄとを連通させる隙間８８を形成したので、より円滑に冷気を吸込口８２ａ〜８２ｄ、８３ａ〜８３ｄに導くことができる。 Moreover, since the clearance gap 88 which connects discharge port 73a-73c, 74a-74c and suction port 82a-82d, 83a-83d between the back wall of the refrigerator compartment 2 and the mounting shelf 41 was formed, it is smoother Cold air can be guided to the suction ports 82a to 82d and 83a to 83d.

また、吸込口８２ａ、８３ａ及び吐出口７３ａ、７４ａはいずれも上段の載置棚４１の上方に設けられ、吐出口７３ａ、７４ａの下方に吸込口８２ａ、８３ａが配される。このため、吐出口７３ａ、７４ａから吐出された冷気を簡単に吸込口８２ａ、８３ａに導くことができる。 The suction ports 82a and 83a and the discharge ports 73a and 74a are all provided above the upper mounting shelf 41, and the suction ports 82a and 83a are disposed below the discharge ports 73a and 74a. For this reason, the cold air discharged from the discharge ports 73a and 74a can be easily guided to the suction ports 82a and 83a.

同様に、吸込口８２ｂ、８３ｂ及び吐出口７３ｂ、７４ｂはいずれも上段の載置棚４１と２段目の載置棚４１との間に設けられ、吐出口７３ｂ、７４ｂの下方に吸込口８２ｂ、８３ｂが配される。これにより、吐出口７３ｂ、７４ｂから吐出された冷気を簡単に吸込口８２ｂ、８３ｂに導くことができる。また、吸込口８２ｃ、８３ｃ及び吐出口７３ｃ、７４ｃはいずれも２段目の載置棚４１と３段目の載置棚４１との間に設けられ、吐出口７３ｃ、７４ｃの下方に吸込口８２ｃ、８３ｃが配される。これにより、吐出口７３ｃ、７４ｃから吐出された冷気を簡単に吸込口８２ｃ、８３ｃに導くことができる。 Similarly, the suction ports 82b and 83b and the discharge ports 73b and 74b are all provided between the upper mounting shelf 41 and the second mounting shelf 41, and the suction ports 82b are disposed below the discharge ports 73b and 74b. 83b. Thereby, the cold air discharged from the discharge ports 73b and 74b can be easily guided to the suction ports 82b and 83b. The suction ports 82c and 83c and the discharge ports 73c and 74c are all provided between the second-stage mounting shelf 41 and the third-stage mounting shelf 41, and the suction ports are provided below the discharge ports 73c and 74c. 82c and 83c are arranged. Thereby, the cold air discharged from the discharge ports 73c and 74c can be easily guided to the suction ports 82c and 83c.

また、循環通路８１は天井部８１ｄによって冷蔵室２の天井面まで延設され、吐出口８４を天井部８１ｄの前部に設けたので、扉２ａの近傍まで湿った冷気を行き渡らせることができる。 In addition, the circulation passage 81 is extended to the ceiling surface of the refrigerator compartment 2 by the ceiling portion 81d, and the discharge port 84 is provided at the front portion of the ceiling portion 81d, so that wet cold air can be distributed to the vicinity of the door 2a. .

本実施形態において、吸込口８２ａ、８２ｂ、８３ａ、８３ｂを冷蔵室２の左右方向の両端部に配置し、吐出口８４を左右方向の中央部に配置している。これに対して、循環通路８１の吐出口を冷蔵室２の左右方向の両端部に配置し、吸込口を冷蔵室２の左右方向の中央部に配置してもよい。この時、循環通路８１の吐出口を冷気通路３２の吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃの近傍に配置すると、冷気通路３２の吐出口７３ａ〜７３ｃ、７４ａ〜７４ｃから吐出される乾燥した冷気に循環通路８１の吐出口から吐出される湿った冷気が混合される。 In the present embodiment, the suction ports 82a, 82b, 83a, 83b are arranged at both ends in the left-right direction of the refrigerator compartment 2, and the discharge port 84 is arranged at the center in the left-right direction. On the other hand, the discharge port of the circulation passage 81 may be disposed at both ends in the left-right direction of the refrigerating chamber 2 and the suction port may be disposed at the center in the left-right direction of the refrigerating chamber 2. At this time, when the discharge port of the circulation passage 81 is arranged in the vicinity of the discharge ports 73a to 73c and 74a to 74c of the cold air passage 32, the dry cold air discharged from the discharge ports 73a to 73c and 74a to 74c of the cold air passage 32 is obtained. Wet cold air discharged from the discharge port of the circulation passage 81 is mixed.

これにより、上記と同様に、乾燥した冷気が貯蔵物に直接接触する量を削減し、貯蔵物の乾燥を低減することができる。また、循環通路８１の吐出口（第２吐出口）から吐出された冷気が中央部の吸込口に導かれて冷蔵室２全体に冷気が流通する。従って、冷蔵室２の温度を均一にすることができる。 Thereby, similarly to the above, it is possible to reduce the amount of dry cool air that comes into direct contact with the stored item, and to reduce drying of the stored item. Further, the cool air discharged from the discharge port (second discharge port) of the circulation passage 81 is guided to the suction port in the central portion, and the cool air flows through the entire refrigerator compartment 2. Therefore, the temperature of the refrigerator compartment 2 can be made uniform.

本発明によると、冷却器を通らずに貯蔵室内の冷気を循環させる循環通路を備えた冷蔵庫に利用することができる。 ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator provided with the circulation path which circulates the cool air in a storage chamber without passing a cooler.

本発明の実施形態の冷蔵庫を示す正面図The front view which shows the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫の内部を示す正面図The front view which shows the inside of the refrigerator of embodiment of this invention 図２のＡ−Ａ断面図AA sectional view of FIG. 図２のＢ−Ｂ断面図BB sectional view of FIG. 本発明の実施形態の冷蔵庫の内部を示す正面図The front view which shows the inside of the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫を示す上面断面図Top sectional drawing which shows the refrigerator of embodiment of this invention 本発明の実施形態の冷蔵庫の循環通路の天面部を示す上面図The top view which shows the top | upper surface part of the circulation path of the refrigerator of embodiment of this invention

符号の説明Explanation of symbols

１冷蔵庫
２冷蔵室
２ｄ戻り口
３温度切替室
４製氷室
５野菜室
６冷凍室
７、８、３５断熱壁
１１冷却器
１２冷凍室送風機
１５導入通風路
１６ヒータ
１７、４６戻り通路
１８温度切替室送風機
２０冷蔵室ダンパ
２１チルド室
２３冷蔵室送風機
３１、３２冷気通路
３７温度切替室吐出ダンパ
３８温度切替室戻りダンパ
４１載置棚
７０冷却パネル
７１パネルベース
７２部材
７３ａ〜７３ｃ、７４ａ〜７４ｃ吐出口（第１吐出口）
８１循環通路
８１ａ背面部
８１ｄ天面部
８２ａ〜８２ｄ、８３ａ〜８３ｄ、８７吸込口
８４吐出口（第２吐出口）
８５循環送風機
８６イオン発生装置
８８隙間
１０２小物収納室
１０３水タンク室 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigerated room 2d Return port 3 Temperature switching room 4 Ice making room 5 Vegetable room 6 Freezer room 7, 8, 35 Insulation wall 11 Cooler 12 Freezer room blower 15 Introduction ventilation path 16 Heater 17, 46 Return path 18 Temperature switching room Blower 20 Refrigerating room damper 21 Chilled room 23 Refrigerating room blower 31, 32 Cold air passage 37 Temperature switching chamber discharge damper 38 Temperature switching chamber return damper 41 Mounting shelf 70 Cooling panel 71 Panel base 72 Member 73a-73c, 74a-74c Discharge port (First discharge port)
81 Circulation passage 81a Back surface portion 81d Top surface portion 82a to 82d, 83a to 83d, 87 Suction port 84 Discharge port (second discharge port)
85 Circulating fan 86 Ion generator 88 Clearance 102 Small article storage room 103 Water tank room

Claims

貯蔵物を収納する貯蔵室と、冷気を生成する冷却器と、前記貯蔵室の背面に設けられて前記冷却器で生成した冷気が流通する冷気通路と、前記冷気通路の前方に重ねて配されて上下に延びるとともに前記冷却器を通らずに前記貯蔵室内の冷気が循環する循環通路と、前記貯蔵室の背面の両側部にわたって設けられるとともに前記循環通路の前面を形成して前記循環通路を流通する冷気が接する熱良導体から成る部材とを備え、前記循環通路の側壁間の幅が前記部材の横幅に略一致することを特徴とする冷蔵庫。 A storage chamber for storing stored items, a cooler for generating cold air, a cool air passage provided at the back of the storage chamber through which the cool air generated by the cooler circulates, and disposed in front of the cool air passage. A circulation passage that extends vertically and through which the cool air in the storage chamber circulates without passing through the cooler, and is provided over both sides of the back surface of the storage chamber and forms a front surface of the circulation passage to circulate through the circulation passage And a member made of a good heat conductor in contact with the cool air, wherein the width between the side walls of the circulation passage substantially matches the lateral width of the member.

前記冷気通路の上部に開口して冷気を吐出するとともに前記貯蔵室の左右方向の両端部に配される第１吐出口と、前記貯蔵室の下部に設けられて前記冷却器に戻る冷気が前記貯蔵室から流出する戻り口と、前記循環通路に開口して前記貯蔵室から冷気を吸い込むとともに前記貯蔵室の左右方向の両端部に配される吸込口と、前記循環通路に開口して冷気を吐出するとともに前記貯蔵室の左右方向の中央部に開口する第２吐出口とを備えたことを特徴とする請求項１に記載の冷蔵庫。 A first discharge port that opens to the upper part of the cold air passage to discharge cold air and is disposed at both ends in the left-right direction of the storage chamber, and cold air that is provided at the lower part of the storage chamber and returns to the cooler is A return port that flows out of the storage chamber, opens into the circulation passage, sucks cold air from the storage chamber, and is disposed at both ends of the storage chamber in the left-right direction, and opens into the circulation passage to discharge cold air. 2. The refrigerator according to claim 1, further comprising a second discharge port that discharges and opens at a central portion in a left-right direction of the storage chamber.

貯蔵物を載置する載置棚を設け、前記貯蔵室の背壁と前記載置棚との間に第１吐出口と前記吸込口とを連通させる隙間を形成したことを特徴とする請求項２に記載の冷蔵庫。 The mounting shelf which mounts a store thing was provided, and the crevice which makes the 1st discharge port and the above-mentioned suction port communicate between the back wall of the above-mentioned storage room, and the above-mentioned mounting shelf was formed. 2. The refrigerator according to 2.

前記部材の前面及び背面に折曲による凹凸を設けたことを特徴とする請求項１〜請求項３のいずれかに記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein unevenness by bending is provided on a front surface and a back surface of the member.

前記部材の背面を流下する結露水を溜める貯水部を前記循環通路の下端に設けたことを特徴とする請求項１〜請求項４いずれかに記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 4, wherein a water storage part for storing condensed water flowing down the back surface of the member is provided at a lower end of the circulation passage.