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JP5903552B2 - refrigerator - Google Patents

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Publication number
JP5903552B2
JP5903552B2 JP2011213943A JP2011213943A JP5903552B2 JP 5903552 B2 JP5903552 B2 JP 5903552B2 JP 2011213943 A JP2011213943 A JP 2011213943A JP 2011213943 A JP2011213943 A JP 2011213943A JP 5903552 B2 JP5903552 B2 JP 5903552B2
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Prior art keywords
cooling
cooler
refrigerator
air passage
opening
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JP2013072617A (en
Inventor
西村 晃一
晃一 西村
愼一 堀井
愼一 堀井
克則 堀井
克則 堀井
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2011213943A priority Critical patent/JP5903552B2/en
Priority to EP12837519.3A priority patent/EP2762808B1/en
Priority to CN201280047879.4A priority patent/CN103827608B/en
Priority to PCT/JP2012/005831 priority patent/WO2013046580A1/en
Publication of JP2013072617A publication Critical patent/JP2013072617A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/063Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Description

本発明は、冷蔵庫に関し、特に、二つの温度帯を持つ冷蔵庫において、一方の部屋を冷却した戻り空気が、他方の部屋に漏れることを防止する構造に関する。   The present invention relates to a refrigerator, and particularly to a structure that prevents return air that has cooled one room from leaking into the other room in a refrigerator having two temperature zones.

図4は、従来の冷蔵庫の冷凍サイクル構成図である。図において、冷凍サイクルは、圧縮機1、凝縮器2、減圧装置3、冷却器4を直列に接続した冷媒回路5、冷却時間の調整などにより2つの温度帯に制御される温度帯の低い冷凍室(図示せず)及び温度帯の高い冷蔵室(図示せず)に冷気を通風させる冷気通風路6により構成される。   FIG. 4 is a configuration diagram of a refrigeration cycle of a conventional refrigerator. In the figure, the refrigeration cycle includes a compressor 1, a condenser 2, a decompression device 3, a refrigerant circuit 5 in which a cooler 4 is connected in series, and a refrigeration with a low temperature zone controlled to two temperature zones by adjusting the cooling time. It is comprised by the cold air ventilation path 6 which ventilates cold air to a room | chamber (not shown) and a refrigerator compartment (not shown) with a high temperature zone.

冷気通風路6は冷却器4、冷蔵庫内へ冷気を循環させる冷却ファン7、冷凍室、冷蔵室へ選択的に冷気を循環させるため、送風路6a及び戻り風路6bそれぞれに設けられた冷凍室送風ダンパ8a、冷蔵室送風ダンパ9a、冷凍室戻りダンパ8b、冷蔵室戻りダンパ9bを有している。   The cool air ventilation path 6 is a cooler 4, a cooling fan 7 that circulates cool air into the refrigerator, a freezer compartment provided in each of the air supply path 6 a and the return air path 6 b in order to selectively circulate cool air to the freezer compartment and the refrigerator compartment. It has the ventilation damper 8a, the refrigerator compartment ventilation damper 9a, the freezer compartment return damper 8b, and the refrigerator compartment return damper 9b.

このような冷蔵庫において、冷凍室が、ある設定温度以上になり、冷凍室のみを冷却する必要が生じた場合には、冷凍サイクルを運転するために、圧縮機1を運転すると共に、冷却ファン7を運転する。さらに、冷凍室送風ダンパ8a及び冷凍室戻りダンパ8bを開口し、冷蔵室送風ダンパ9a及び冷蔵室戻りダンパ9bを閉塞することにより、冷凍室のみを冷却する。   In such a refrigerator, when the freezer compartment becomes a certain set temperature or more and it is necessary to cool only the freezer compartment, the compressor 1 is operated and the cooling fan 7 is operated to operate the refrigerating cycle. To drive. Furthermore, only the freezer compartment is cooled by opening the freezer compartment blower damper 8a and the freezer compartment return damper 8b and closing the refrigerator compartment blower damper 9a and the refrigerator compartment return damper 9b.

一方、冷蔵室がある設定温度以上になり、冷蔵室のみを冷却する必要が生じた場合には、冷蔵室送風ダンパ9a及び冷蔵室戻りダンパ9bを開口し、冷凍室送風ダンパ8a及び冷凍室戻りダンパ8bを閉塞することにより、冷蔵室のみを冷却する。   On the other hand, when the refrigerator compartment exceeds a certain set temperature and it is necessary to cool only the refrigerator compartment, the refrigerator compartment blower damper 9a and the refrigerator compartment return damper 9b are opened, and the refrigerator compartment fan damper 8a and the refrigerator compartment return are opened. By closing the damper 8b, only the refrigerator compartment is cooled.

このように制御することにより、温度帯の高い冷蔵室を冷却する際に、温度帯の低い冷凍室への温度の高い冷気の流入を防止することができ、冷凍室の温度上昇を最小限に抑えることができる冷蔵庫が提案されている(例えば、特許文献1参照)。   By controlling in this way, when cooling a refrigerated room with a high temperature zone, it is possible to prevent the flow of cold air with a high temperature into a freezer room with a low temperature zone, and to minimize the temperature rise of the freezer room. The refrigerator which can be suppressed is proposed (for example, refer to patent documents 1).

また、他の方法として、冷蔵室を冷却した冷気を、冷却器4の背面下段から吸い込ませ、冷凍室側の戻り風路をそれより下方側に開口することにより、冷凍室側への逆流を防止する構成の冷蔵庫も商品化されている。   As another method, the cold air that has cooled the refrigerator compartment is sucked in from the lower rear stage of the cooler 4, and the return air passage on the freezer compartment side is opened to the lower side so that the reverse flow to the freezer compartment side is prevented. Refrigerators with a preventive structure have been commercialized.

特開2004−69245号公報JP 2004-69245 A

しかしながら、上記従来の構成では、冷気の流入を防止するための、冷凍室戻りダンパ8a及び冷蔵室戻りダンパ9aが必要であり、ダンパ追加によるコストアップ、冷蔵庫のダクトが複雑になる、ダンパ及び風路分の容積が必要となるため貯蔵室の容積が小さくなる、可動部品が増えることにより信頼性が低くなるなどの課題があった。   However, the above-described conventional configuration requires the freezer return damper 8a and the refrigerator return damper 9a for preventing the inflow of cold air, which increases the cost due to the addition of the damper and complicates the refrigerator duct. Since the volume of the path is required, there are problems such as a decrease in the volume of the storage chamber and a decrease in reliability due to an increase in movable parts.

本発明は、ダンパなどの大きな可動部品を追加することなく冷気の流入を防止することにより、貯蔵室の大型化を図りつつ、低コストで信頼性が高く、冷凍室の温度上昇を最小限に抑えた冷蔵庫を提供することを目的とする。   The present invention prevents the inflow of cold air without adding a large moving part such as a damper, thereby increasing the size of the storage room, and reducing the temperature rise in the freezer room at a low cost and with high reliability. An object is to provide a suppressed refrigerator.

また、吸込口を冷却器4背面に設ける仕様では、冷却器4への着霜による目詰まりを防止するため、フィンアンドチューブ型の冷却器においては、冷却器4下段のフィンピッチを大きくしたり、フィンを無くしたりして対応するため、冷却器4の能力が低くなったり、能力を確保しようとすると冷却器4が大型化し、庫内容積が小さくなるなどの課題がある。   Further, in the specification in which the suction port is provided on the back surface of the cooler 4, in order to prevent clogging due to frost formation on the cooler 4, in the fin-and-tube type cooler, the fin pitch at the lower stage of the cooler 4 is increased. In order to cope with the problem by eliminating the fins, there is a problem that the capacity of the cooler 4 is lowered, or that the capacity of the cooler 4 is increased and the internal volume is reduced when the capacity is secured.

本発明の他の目的は、冷却器4の能力を維持しつつ、冷気の流入を防止することにより、冷却性能が高く、冷凍室の温度上昇を最小限に抑えた冷蔵庫を提供することである。   Another object of the present invention is to provide a refrigerator having high cooling performance and minimizing temperature rise in the freezer compartment by preventing the inflow of cold air while maintaining the capacity of the cooler 4. .

上記従来の課題を解決するために、本発明の冷蔵庫は、断熱壁で囲われ、前面に開口部を有した第一の貯蔵室と第二の貯蔵室と、前記第二の貯蔵室の背面側に設けた冷却室と、前記冷却室内に設けた冷却器と、前記冷却器で生成した冷気を前記第一の貯蔵室及び前記第二の貯蔵室へと循環させる冷却ファンと、前記冷却ファンによる冷却風を前記第一の貯蔵室内へと導く第一の吐出風路と、前記冷却ファンによる冷却風を前記第二の貯蔵室内へと導く第二の吐出風路と、前記第一の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第一の戻り風路と、前記第二の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第二の戻り風路と、前記冷却器に付着した霜を解かした水を受ける水受け皿とを設けた冷蔵庫において、前記第一の戻り風路からの冷却風を前記冷却室へと導く第一の開口と、奥行き方向において前記第一の開口と対向する面に設けられた前記第二の戻り風路からの冷却風を前記冷却室へと導く第二の開口とを設け、前記第一の開口と前記第二の開口の間に、前記第一の開口から吐出した冷却風が前記第二の開口から前記第二の戻り風路を逆流して前記第二の貯蔵室内へと流入するのを防止する流入防止壁を備え、前記水受け皿の前記第二の開口側の壁と前記流入防止壁により、前記第二の開口から吐出した冷却風を前記冷却器の方向へと導く構成としている。 In order to solve the above-described conventional problems, the refrigerator of the present invention includes a first storage chamber and a second storage chamber which are surrounded by a heat insulating wall and have an opening on the front surface, and the rear surface of the second storage chamber. A cooling chamber provided on the side, a cooler provided in the cooling chamber, a cooling fan that circulates cold air generated in the cooler to the first storage chamber and the second storage chamber, and the cooling fan A first discharge air passage that guides the cooling air from the cooling chamber into the first storage chamber, a second discharge air passage that guides the cooling air from the cooling fan into the second storage chamber, and the first storage. a first return air path for guiding the cooling air that has cooled the chamber again into the cooling chamber, and a second return air path for guiding again the cooling air having cooled the second storage chamber into the cooling chamber, wherein in a refrigerator having a water receiving tray for receiving it was thawed frost adhering to the cooler water, or the first return air trunk A first opening that guides the cooling air to the cooling chamber, and a cooling air from the second return air passage that is provided on a surface facing the first opening in the depth direction. A second opening is provided, and the cooling air discharged from the first opening flows backward through the second return air passage from the second opening between the first opening and the second opening. Cooling air discharged from the second opening by the second opening side wall of the water tray and the inflow prevention wall. Is guided to the direction of the cooler .

この構成により、第一の貯蔵室を冷却した冷気が第二の貯蔵室に流入することを、簡単な構成で防止することができ、第二の貯蔵室の温度上昇を抑えることができる。   With this configuration, it is possible to prevent the cool air that has cooled the first storage chamber from flowing into the second storage chamber with a simple configuration, and it is possible to suppress an increase in the temperature of the second storage chamber.

本発明の冷蔵庫は、第一の貯蔵室を冷却した冷気が第二の貯蔵室に流入することを、簡単な構成で防止することができ、第二の貯蔵室の温度上昇を抑えることができるので、低コストで冷却効率を高めた冷蔵庫を提供することができる。The refrigerator of the present invention can prevent the cold air that has cooled the first storage chamber from flowing into the second storage chamber with a simple configuration, and can suppress the temperature rise of the second storage chamber. Therefore, it is possible to provide a refrigerator with improved cooling efficiency at low cost.

本発明の実施の形態1における冷蔵庫の縦断面図The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention 実施の形態1における冷蔵庫のドアを開けた状態の正面図The front view of the state which opened the door of the refrigerator in Embodiment 1 実施の形態1における冷蔵庫の戻り風路近傍の断面図Sectional drawing of the return air path vicinity of the refrigerator in Embodiment 1. 従来の冷蔵庫の冷凍サイクル構成図Refrigeration cycle configuration diagram of a conventional refrigerator

本発明の冷蔵庫は、断熱壁で囲われ、前面に開口部を有した第一の貯蔵室と第二の貯蔵室と、前記第二の貯蔵室の背面側に設けた冷却室と、前記冷却室内に設けた冷却器と、前記冷却器で生成した冷気を前記第一の貯蔵室及び前記第二の貯蔵室へと循環させる冷却ファンと、前記冷却ファンによる冷却風を前記第一の貯蔵室内へと導く第一の吐出風路と、前記冷却ファンによる冷却風を前記第二の貯蔵室内へと導く第二の吐出風路と、前記第一の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第一の戻り風路と、前記第二の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第二の戻り風路と、前記冷却器に付着した霜を解かした水を受ける水受け皿とを設けた冷蔵庫において、前記第一の戻り風路からの冷却風を前記冷却室へと導く第一の開口と、奥行き方向において前記第一の開口と対向する面に設けられた前記第二の戻り風路からの冷却風を前記冷却室へと導く第二の開口とを設け、前記第一の開口と前記第二の開口の間に、前記第一の開口から吐出した冷却風が前記第二の開口から前記第二の戻り風路を逆流して前記第二の貯蔵室内へと流入するのを防止する流入防止壁を備え、前記水受け皿の前記第二の開口側の壁と前記流入防止壁により、前記第二の開口から吐出した冷却風を前記冷却器の方向へと導く構成としている。 The refrigerator of the present invention is surrounded by a heat insulating wall and has a first storage chamber and a second storage chamber having an opening on the front surface, a cooling chamber provided on the back side of the second storage chamber, and the cooling A cooler provided in the room, a cooling fan that circulates the cool air generated by the cooler to the first storage room and the second storage room, and cooling air from the cooling fan in the first storage room A first discharge air passage that leads to the second storage air passage, a second discharge air passage that guides the cooling air from the cooling fan to the second storage chamber, and the cooling air that has cooled the first storage chamber. A first return air passage that leads again to the cooling chamber, a second return air passage that guides the cooling air that has cooled the second storage chamber to the cooling chamber, and water that has defrosted the cooler. in a refrigerator having a water receiving tray for receiving a first directing cooling air from the first return air path to the cooling chamber And a second opening for guiding the cooling air from the second return air passage provided on the surface facing the first opening in the depth direction to the cooling chamber. Between the opening and the second opening, the cooling air discharged from the first opening flows backward from the second opening through the second return air passage and flows into the second storage chamber. The inflow prevention wall is configured to prevent the cooling air discharged from the second opening toward the cooler by the wall on the second opening side of the water tray and the inflow prevention wall . .

この構成により、水受け皿と流入防止壁によって冷蔵室を冷却した冷気を冷却器へとスムーズに導くことができ、流入防止壁を小さくすることができ、より低コストで第二の貯蔵室の温度上昇を抑えることができる。 With this configuration, the cool air that has cooled the refrigerator compartment by the water tray and the inflow prevention wall can be smoothly guided to the cooler, the inflow prevention wall can be reduced, and the temperature of the second storage chamber can be reduced at a lower cost. The rise can be suppressed.

また、本発明の冷蔵庫は、流入防止壁は、第一の開口から吐出した冷却風を冷却器の方向へと向きを変えることを特徴とした構成としている。   In the refrigerator according to the present invention, the inflow prevention wall is configured to change the direction of the cooling air discharged from the first opening toward the cooler.

この構成により、第一の貯蔵室を冷却した冷気は、第一の貯蔵室の戻り風路側には流れず、全て冷却器へと流すことができ、より確実に第二の貯蔵室の温度上昇を抑えることができる。   With this configuration, the cold air that has cooled the first storage chamber does not flow to the return air passage side of the first storage chamber, but can flow all to the cooler, and the temperature of the second storage chamber rises more reliably. Can be suppressed.

また、本発明の冷蔵庫は、第二の戻り風路を冷却室の前面側に設け、第一の戻り風路を冷却室の背面側に設けたことを特徴とした構成としている。 The refrigerator of the present invention has a configuration characterized in that the second return air passage is provided on the front side of the cooling chamber, and the first return air passage is provided on the back side of the cooling chamber.

この構成により、冷却器と断熱壁との間に冷却器よりも温度の高い戻り風路を備えた、断熱性能が高い構成とすることができ、より第二の貯蔵室の温度上昇を抑えることができる。   By this structure, it can be set as the structure with high heat insulation performance provided with the return air path whose temperature is higher than a cooler between a cooler and a heat insulation wall, and suppresses the temperature rise of the 2nd store room more. Can do.

また、本発明の冷蔵庫は、第一の開口と第二の開口は冷却器より鉛直下方側に設けたことを特徴とした構成としている。   The refrigerator of the present invention is characterized in that the first opening and the second opening are provided vertically below the cooler.

この構成により、戻りの冷気を冷却器の下から吸い込ませることができ、冷却器全体に効率よく冷気を流すことができ、冷蔵庫の冷却効率を高めることができる。   With this configuration, the return cold air can be sucked from under the cooler, the cool air can be efficiently flowed through the entire cooler, and the cooling efficiency of the refrigerator can be increased.

また、本発明の冷蔵庫は、第一の吐出風路を選択的に閉塞、開放する第一の風路閉塞手段と、第二の吐出風路を選択的に閉塞、開放する第二の風路閉塞手段とを設け、冷却ファン運転中は第一の閉塞手段と第二の閉塞手段を同時に開放しないことを特徴とした構成としている。   The refrigerator of the present invention includes a first air passage closing means for selectively closing and opening the first discharge air passage, and a second air passage for selectively closing and opening the second discharge air passage. A closing means is provided, and the first closing means and the second closing means are not simultaneously opened during operation of the cooling fan.

この構成により、第一の貯蔵室を単独で冷却した冷気が第二の貯蔵室に流入するのを防止することができ、第一の貯蔵室を冷却する際の蒸発温度を高くすることができ、冷凍サイクルの効率を高めることができる。   With this configuration, it is possible to prevent the cold air that has cooled the first storage chamber from flowing into the second storage chamber, and to increase the evaporation temperature when cooling the first storage chamber. The efficiency of the refrigeration cycle can be increased.

また、本発明の冷蔵庫は、第一の貯蔵室の温度が第二の貯蔵室の温度よりも高いことを特徴とした構成としている。   Moreover, the refrigerator of this invention is set as the structure characterized by the temperature of a 1st store room being higher than the temperature of a 2nd store room.

この構成により、冷却器と断熱壁との間に、より温度の高い冷蔵室からの戻り風路を備えた、断熱性能が高い構成とすることができ、より冷凍室の温度上昇を抑えることができる。   With this configuration, it is possible to provide a configuration with a high heat insulation performance including a return air passage from a refrigeration room having a higher temperature between the cooler and the heat insulation wall, thereby further suppressing an increase in the temperature of the freezer room. it can.

また、本発明の冷蔵庫は、流入防止壁を冷却器の鉛直下方向の投影面以外に設けること
を特徴とした構成としている。
In addition, the refrigerator of the present invention is characterized in that the inflow prevention wall is provided on a portion other than the vertically downward projection surface of the cooler.

この構成により、冷却器を除霜した際に発生する水が流入防止壁を伝い、冷凍室内へと流れることはない。これにより、冷凍室庫内での異常な霜付き、氷結を防止することができる。   With this configuration, water generated when the cooler is defrosted does not flow through the inflow prevention wall and does not flow into the freezer compartment. Thereby, abnormal frost formation and freezing in a freezer compartment can be prevented.

また、本発明の冷蔵庫は、流入防止壁と水受け皿の間に嵌合部を設けることを特徴とした構成としている。   Moreover, the refrigerator of the present invention has a configuration characterized in that a fitting portion is provided between the inflow prevention wall and the water tray.

この構成により、流入防止壁と水受け皿の間に隙間を作ることが無く風路を構成でき、流入防止壁と水受け皿の間からの冷気漏れが無く、より冷凍室の温度上昇を抑えることができる。   With this configuration, it is possible to configure an air passage without creating a gap between the inflow prevention wall and the water tray, there is no leakage of cold air between the inflow prevention wall and the water tray, and the temperature rise in the freezer compartment can be further suppressed. it can.

また、本発明の冷蔵庫は、第一の吐出風路、第一の戻り風路、第一の閉塞手段及び第二の閉塞手段を内部に備えるとともに、冷却器と第一の貯蔵室内を仕切るカバーを設け、カバーと流入防止壁を一体構造とすることを特徴とした構成としている。   The refrigerator of the present invention includes a first discharge air passage, a first return air passage, a first closing means, and a second closing means inside, and a cover that partitions the cooler and the first storage chamber. And the cover and the inflow prevention wall are integrated.

この構成により、部品点数を減らすことができる。これにより、低コストで風路を構成することができると共に、組立のバラツキを減らすことができ、より低コストで冷凍室の温度上昇をより抑えることができる。   With this configuration, the number of parts can be reduced. Thereby, while being able to comprise an air path at low cost, the variation of an assembly can be reduced and the temperature rise of a freezer compartment can be suppressed more at low cost.

また、本発明の冷蔵庫は、冷却器に付着した霜を解かす加熱手段を設け、第一の開口の高さは加熱手段の上端から下端の高さよりも広いことを特徴とした構成としている。   In addition, the refrigerator of the present invention is provided with a heating means for defrosting frost adhering to the cooler, and the height of the first opening is wider than the height from the upper end to the lower end of the heating means.

この構成により、加熱手段の上下を冷気が流れることにより風路抵抗が小さくなり、冷却ファンの風量低下を抑制することができる。これにより、より冷却効率の高い冷蔵庫とすることができる。   With this configuration, the air path resistance is reduced by the flow of cool air above and below the heating means, and a reduction in the air volume of the cooling fan can be suppressed. Thereby, it can be set as a refrigerator with higher cooling efficiency.

(実施の形態1)
図1は本発明の実施の形態における冷蔵庫の縦断面図である。図2は同実施の形態のドアを開けた状態の正面図である。図3は同実施の形態の戻り風路近傍の断面図である。
(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a refrigerator in an embodiment of the present invention. FIG. 2 is a front view of the embodiment with the door opened. FIG. 3 is a sectional view of the vicinity of the return air passage in the same embodiment.

図1から図3において、断熱壁で構成された冷蔵庫本体11は、上部に冷蔵室12、下部に冷凍室13を備えており、内部には、圧縮機1、凝縮器(図示せず)、減圧装置(図示せず)、冷却器4からなる冷媒回路を備えている。   In FIG. 1 to FIG. 3, the refrigerator main body 11 composed of a heat insulating wall includes a refrigerator compartment 12 at the top and a freezer compartment 13 at the bottom, and includes a compressor 1, a condenser (not shown), A refrigerant circuit including a decompression device (not shown) and a cooler 4 is provided.

冷凍室13内には内部に冷却器4を収納する冷却室14を備えており、冷凍室13庫内と冷却器カバー15により仕切られている。   The freezer compartment 13 is provided with a cooling chamber 14 for accommodating the cooler 4 therein, and is partitioned by the cooler cover 15 from the inside of the freezer compartment 13.

冷却器4上方には、冷却器4で生成した冷気を冷蔵室12及び冷凍室13へと選択的に循環させる冷却ファン7、冷蔵室送風ダンパ9a及び冷凍室送風ダンパ8aを備えている。   Above the cooler 4, there are provided a cooling fan 7 that selectively circulates the cold air generated by the cooler 4 to the refrigerator compartment 12 and the freezer compartment 13, a refrigerator air blower damper 9 a, and a freezer compartment fan damper 8 a.

冷蔵室送風ダンパ9aと冷蔵室12庫内は冷蔵室吐出風路16により連通しており、冷蔵室送風ダンパ9aが開くことにより、冷蔵室12と冷却室14が連通する。   The refrigerator compartment blower damper 9a and the refrigerator compartment 12 communicate with each other by a refrigerator compartment discharge air passage 16, and the refrigerator compartment fan damper 9a is opened so that the refrigerator compartment 12 and the refrigerator compartment 14 communicate with each other.

冷凍室送風ダンパ8aと冷凍室13庫内は冷凍室吐出風路17により連通しており、冷凍室送風ダンパ8aが開くことにより、冷凍室13と冷却室14が連通する。   The freezer compartment blower damper 8a and the inside of the freezer compartment 13 communicate with each other by a freezer compartment discharge air passage 17, and the freezer compartment blower damper 8a is opened so that the freezer compartment 13 and the cooler compartment 14 communicate with each other.

冷却室14の冷却器4より下の部分の背面には冷蔵室吸込口18を、前面には冷凍室吸
込口19を備えており、それぞれ、冷却室14と冷蔵庫本体11の間に冷却器4とほぼ同じ幅でまたはそれ以上の幅で設けた冷蔵室戻り風路20及び冷却器カバー15下部に設けられた冷凍室戻り風路21とを連通するように開口している。
A refrigerator compartment suction port 18 is provided on the back surface of the cooling chamber 14 below the cooler 4, and a freezer compartment suction port 19 is provided on the front surface. The cooler 4 is provided between the cooling chamber 14 and the refrigerator body 11, respectively. And the freezer compartment return air passage 21 provided at the lower part of the cooler cover 15 are opened to communicate with each other.

冷却器4下方には、冷却運転により冷却器4に付着した霜を解かすラジアントヒーターなどの加熱手段22を冷蔵室吸込口18の開口の上端と下端の間に設けており、さらにその下方に霜を解かした際に発生する水を外部に排出するための水受け皿23及び排水パイプ24を設けている。   Below the cooler 4, a heating means 22 such as a radiant heater is provided between the upper end and the lower end of the refrigeration chamber suction port 18 to defrost frost attached to the cooler 4 by the cooling operation, and further below that A water tray 23 and a drain pipe 24 are provided for discharging water generated when frost is thawed to the outside.

また、冷却器カバー15の下端の冷却器4側には、下方向に凸形状の水切り15aを備えている。   A cooler drainer 15a that protrudes downward is provided on the cooler 4 side at the lower end of the cooler cover 15.

冷却器カバー15下部には、流入防止壁25を備えている。流入防止壁25は、長方形の板状の形状をしており、少なくとも冷蔵室吸込口18の幅よりも広い幅であり、下部に水受け皿23の手前の壁との嵌合部25aを備えており、水受け皿23との隙間を無くすと共に、流入防止壁25の位置のバラツキを無くす。   An inflow prevention wall 25 is provided at the lower part of the cooler cover 15. The inflow prevention wall 25 has a rectangular plate shape, is at least wider than the width of the refrigerator compartment suction port 18, and includes a fitting portion 25 a with a wall in front of the water tray 23 at the lower part. In addition, the gap with the water receiving tray 23 is eliminated, and the variation in the position of the inflow prevention wall 25 is eliminated.

また、流入防止壁25は下端よりも上端が冷蔵庫本体11背面側に近くなるように傾斜していると共に、冷却器4の鉛直下方向の投影面よりも前面側の位置に配置されている。   The inflow prevention wall 25 is inclined so that the upper end is closer to the back side of the refrigerator main body 11 than the lower end, and is disposed at a position on the front side of the vertically downward projection surface of the cooler 4.

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

冷蔵庫運転時、庫内温度が上昇し、冷凍室13の温度が基準温度を超え、冷凍室13を冷却する必要がある場合、圧縮機1が停止している場合は圧縮機1が運転し、すでに運転している場合は継続して運転し、冷却ファン7が運転すると共に、冷凍室送風ダンパ8aが開き、冷蔵室送風ダンパ9aが閉じる。   During refrigerator operation, the internal temperature rises, the temperature of the freezer compartment 13 exceeds the reference temperature, and the freezer compartment 13 needs to be cooled. If the compressor 1 is stopped, the compressor 1 is operated. If it is already operating, it continues to operate, the cooling fan 7 is operated, the freezer compartment blower damper 8a is opened, and the refrigerator compartment blower damper 9a is closed.

これにより、冷却器4で生成された冷気は冷凍室送風ダンパ8aから冷凍室吐出風路17を流れて冷凍室13内へと流れることにより冷凍室13内を冷却する。   Thereby, the cool air generated by the cooler 4 flows from the freezer compartment blower damper 8a through the freezer compartment discharge air passage 17 and into the freezer compartment 13, thereby cooling the inside of the freezer compartment 13.

この時、冷凍室13を冷却した冷気は、冷凍室戻り風路21、冷凍室吸込口19の順に吸い込まれ、再び冷却器4で冷却されて冷却ファン7により冷凍室送風ダンパ8a、冷凍室吐出風路17から冷凍室13庫内へと吐出される。   At this time, the cold air that has cooled the freezer compartment 13 is sucked in the order of the freezer return air passage 21 and the freezer compartment suction port 19, is cooled again by the cooler 4, and is discharged from the freezer compartment blower damper 8 a and freezer compartment by the cooling fan 7. The air is discharged from the air passage 17 into the freezer compartment 13.

一方、冷蔵室12の温度が基準温度を超え、冷蔵室12を冷却する必要がある場合、冷却ファン7が運転すると共に、冷蔵室送風ダンパ9aが開き、冷凍室送風ダンパ8aが閉じる。   On the other hand, when the temperature of the refrigerator compartment 12 exceeds the reference temperature and the refrigerator compartment 12 needs to be cooled, the cooling fan 7 is operated, the refrigerator compartment blower damper 9a is opened, and the refrigerator compartment blower damper 8a is closed.

これにより、冷却器4で生成された冷気は冷蔵室送風ダンパ9aから冷蔵室吐出風路16を流れて冷蔵室12内へと流れることにより、冷蔵室12内を冷却する。   Thus, the cold air generated by the cooler 4 flows from the refrigerating chamber blower damper 9a through the refrigerating chamber discharge air passage 16 and into the refrigerating chamber 12, thereby cooling the inside of the refrigerating chamber 12.

この時、冷蔵室12を冷却した冷気は、冷蔵室戻り風路20、冷蔵室吸込口18の順に吸い込まれ、流入防止壁25により冷却器4側へと向きを変えられ、再び冷却器4で冷却されて冷却ファン7により冷蔵室送風ダンパ9a、冷蔵室吐出風路16から冷蔵室12庫内へと吐出される。   At this time, the cold air that has cooled the refrigerator compartment 12 is sucked in the order of the refrigerator compartment return air passage 20 and the refrigerator compartment suction port 18, and the direction is changed to the cooler 4 side by the inflow prevention wall 25. After being cooled, the cooling fan 7 discharges the refrigerator compartment air blower damper 9 a and the refrigerator compartment discharge air passage 16 into the refrigerator compartment 12.

ここで、流入防止壁25が無かった場合、冷蔵室吸込口18から吸い込まれた冷気は、水受け皿23の前面の壁を乗り越えて、冷凍室吸込口19から冷凍室戻り風路21を逆流して冷凍室13内へと流入する。この時、冷蔵室吸込口18から流入する冷気は、冷蔵室12を冷却したため冷凍室13内の温度よりも高くなっており、冷凍室13の温度が上昇
してしまう。
Here, when there is no inflow prevention wall 25, the cold air sucked from the refrigerator compartment suction port 18 gets over the front wall of the water receiving tray 23 and flows backward from the freezer compartment suction port 19 through the freezer return air passage 21. And flows into the freezer compartment 13. At this time, the cold air flowing from the refrigerator compartment suction port 18 is higher than the temperature in the freezer compartment 13 because the refrigerator compartment 12 is cooled, and the temperature of the freezer compartment 13 rises.

これに対して、流入防止壁25がある場合は、冷蔵室吸込口18から吸い込まれた冷気は、水受け皿23から流入防止壁25に沿って流れることにより、流れの方向が冷却器4側へと変えられるため、冷凍室吸込口19の方向へと流れることはない。   On the other hand, when there is the inflow prevention wall 25, the cold air sucked from the refrigerator compartment suction port 18 flows from the water tray 23 along the inflow prevention wall 25, so that the flow direction is toward the cooler 4. Therefore, it does not flow toward the freezer compartment inlet 19.

従って、従来例のようなダンパを冷凍室吸込口19に設けなくても冷蔵室12冷却中に冷凍室13が冷蔵室12を冷却した後の冷気により暖められることが無く、安価な構成で確実に冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, even if the damper as in the conventional example is not provided in the freezer compartment suction port 19, the freezer compartment 13 is not heated by the cold air after the refrigerator compartment 12 is cooled while the refrigerator compartment 12 is being cooled, and it is ensured with an inexpensive configuration. Moreover, the temperature rise of the freezer compartment 13 can be suppressed, and it can be set as the refrigerator with high cooling performance.

また、冷蔵室戻り風路20は冷却室14と冷蔵庫本体11の背面の断熱壁との間に冷却器4とほぼ同じ幅またはそれ以上の幅で設けているため、断熱壁を介した外気と冷蔵庫本体11内の温度差を小さくできるため熱移動が少なくなり断熱効果は高くなるが、冷蔵室戻り風路20内を流れる冷気は従来の構成に比べて温度が高くなる。   In addition, since the refrigerator compartment return air passage 20 is provided between the cooling chamber 14 and the heat insulating wall on the back surface of the refrigerator main body 11 with substantially the same width as or larger than that of the cooler 4, Since the temperature difference in the refrigerator main body 11 can be reduced, the heat transfer is reduced and the heat insulation effect is increased.

さらに、冷蔵室12を冷却している時は、冷凍室送風ダンパ8aを閉じることにより、冷蔵室12のみに冷気を循環させる構成としており、冷凍室送風ダンパ8aが無い場合や、冷蔵室12冷却中に冷凍室送風ダンパ8aが閉じない場合に比べて冷却器4の温度を高くすることができ、冷蔵室12冷却中の冷却サイクルの効率は高くなるが、冷蔵室戻り風路20内を流れる冷気の温度がさらに高くなる。   Furthermore, when the refrigerator compartment 12 is being cooled, the freezer compartment air damper 8a is closed to circulate the cold air only in the refrigerator compartment 12, and when there is no freezer compartment air damper 8a, the refrigerator compartment 12 is cooled. The temperature of the cooler 4 can be increased compared to the case where the freezer blower damper 8a is not closed, and the efficiency of the cooling cycle during cooling of the refrigerator compartment 12 is increased, but it flows in the refrigerator return air passage 20. The temperature of the cold air is further increased.

このような構成においても確実に冷凍室13への冷気の漏れを防止することができる。   Even in such a configuration, it is possible to reliably prevent cold air from leaking into the freezer compartment 13.

従って、より断熱効果の高い冷蔵庫においても冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, the temperature rise of the freezer compartment 13 can be suppressed even in a refrigerator with a higher heat insulation effect, and a refrigerator with high cooling performance can be obtained.

また、本発明の冷蔵庫においては、冷蔵室吸込口18と冷凍室吸込口19は冷却器4よりも下方側で開口している。これにより、冷却器4の下段のフィンを少なくすることなく冷凍室13への冷気の漏れを防止することができる。   Further, in the refrigerator of the present invention, the refrigerator compartment inlet 18 and the freezer compartment inlet 19 are opened below the cooler 4. Thereby, the leakage of the cold air to the freezer compartment 13 can be prevented without reducing the lower fins of the cooler 4.

従って、冷却器4の能力を低下させることなく冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, the temperature rise of the freezer compartment 13 can be suppressed without reducing the capacity of the cooler 4, and a refrigerator with high cooling performance can be obtained.

また、流入防止壁25は、水受け皿23と嵌合部25aによって固定されており、水受け皿23と流入防止壁25によって冷蔵室12を冷却した冷気を冷却器4へと導くことができる。これにより、水受け皿23を風路として利用でき、流入防止壁25を小さくすることができると共に、水受け皿23との嵌合部25aで流入防止壁25が固定されるため、部品寸法や組み立てのバラツキにより水受け皿23と流入防止壁25の間に隙間ができ、冷気が隙間から冷凍室13内へと漏れることがない。   Further, the inflow prevention wall 25 is fixed by the water receiving tray 23 and the fitting portion 25 a, and the cold air that has cooled the refrigerator compartment 12 by the water receiving tray 23 and the inflow prevention wall 25 can be guided to the cooler 4. Accordingly, the water receiving tray 23 can be used as an air path, the inflow preventing wall 25 can be made small, and the inflow preventing wall 25 is fixed by the fitting portion 25a with the water receiving tray 23. Due to the variation, a gap is formed between the water receiving tray 23 and the inflow prevention wall 25, and cold air does not leak into the freezer compartment 13 from the gap.

従って、より安価な構成で、より確実に冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, the temperature rise of the freezer compartment 13 can be more reliably suppressed with a cheaper configuration, and a refrigerator with high cooling performance can be obtained.

また、流入防止壁25は冷却器カバー15と一体構造としている。これにより、部品点数を減らすことができるため、より安価に流入防止壁25を構成することができる。   Further, the inflow prevention wall 25 is integrated with the cooler cover 15. Thereby, since the number of parts can be reduced, the inflow prevention wall 25 can be comprised more inexpensively.

従って、より安価な構成で冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, the temperature rise of the freezer compartment 13 can be suppressed with a cheaper configuration, and a refrigerator with high cooling performance can be obtained.

また、冷蔵室吸込口18は、加熱手段22よりも高い位置から低い位置までの高さで開口しているため、冷蔵室12を冷却した冷気は、冷蔵室吸込口18より吸い込まれ、加熱手段22よりも低い位置からは、水受け皿23から流入防止壁25に沿って冷却器4へと吸い込まれ、加熱手段22よりも高い位置からは、直接、冷却器4へと吸い込まれる。   Further, since the refrigerating room suction port 18 opens at a height from a position higher than the heating means 22 to a lower position, the cold air that has cooled the refrigerating room 12 is sucked in from the refrigerating room suction port 18 and is heated. From a position lower than 22, the water is sucked into the cooler 4 along the inflow prevention wall 25 from the water receiving tray 23, and is directly sucked into the cooler 4 from a position higher than the heating means 22.

これに対し、冷蔵室吸込口18が加熱手段22より高い位置のみで開口している場合は冷蔵室吸込口18からの冷気は冷却器4へと吸い込まれる際に方向が急激に変えられることにより圧力損失が大きくなる。   On the other hand, when the refrigerating room suction port 18 is opened only at a position higher than the heating means 22, the direction of the cold air from the refrigerating room suction port 18 is rapidly changed when sucked into the cooler 4. Pressure loss increases.

また、冷蔵室吸込口18が加熱手段22より低い位置のみで開口している場合は、冷蔵室吸込口18から吸い込まれた冷気は全て水受け皿23から流入防止壁25へと流れ、風速が速くなるため、冷凍室13内へ冷気が漏れるのを防止するために、より流入防止壁25を冷却器4側へ傾ける必要があり、圧力損失が大きくなる。   Further, when the refrigerating room suction port 18 is opened only at a position lower than the heating means 22, all the cold air sucked from the refrigerating room suction port 18 flows from the water receiving tray 23 to the inflow prevention wall 25, and the wind speed is high. Therefore, in order to prevent cold air from leaking into the freezer compartment 13, it is necessary to further incline the inflow prevention wall 25 toward the cooler 4, and pressure loss increases.

また、圧力損失を減らすため、加熱手段22を、冷蔵室吸込口18から離す構成とする場合は、安全確保のため、加熱手段22と周囲の部品の距離をある程度取るために、冷却室14が大きくなり、庫内容積が小さくなってしまう。   In order to reduce the pressure loss, when the heating means 22 is separated from the refrigerating room suction port 18, the cooling chamber 14 is provided in order to secure a certain distance between the heating means 22 and the surrounding parts for ensuring safety. It becomes large and the internal volume becomes small.

従って、庫内容積を減らすことなく、風路の圧力損失を小さく抑えて冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, without reducing the internal volume, the pressure loss of the air passage can be suppressed to a small level, the temperature rise of the freezer compartment 13 can be suppressed, and a refrigerator with high cooling performance can be obtained.

また、流入防止壁25は、冷却器4の鉛直下方向の投影面以外にあるため、冷却器4に付着した霜を解かす動作を行った際に発生する除霜水が流入防止壁25を伝って冷凍室13庫内へと漏れ出ることは無い。   Further, since the inflow prevention wall 25 is located on a plane other than the vertically downward projection surface of the cooler 4, the defrost water generated when the operation of defrosting the frost attached to the cooler 4 is performed on the inflow prevention wall 25. It does not leak into the 13 freezer compartment.

さらに、冷却器カバー15には水切り15aを備えており、冷却器4表面で解けた水が冷却器カバー15を伝って流れてきても、水切り15a部で下方向に落下するため、水が冷却器カバー15を伝って冷凍室13内へ漏れ出ることは無い。この時、流入防止壁25を、上端が水切り15aよりも前面側に来るような角度とすることにより、水切り15aから落下した水が流入防止壁25を伝って冷凍室13内へ漏れ出ることも無い。   Furthermore, the cooler cover 15 is provided with a drainer 15a. Even if the water melted on the surface of the cooler 4 flows along the cooler cover 15, it falls downward at the drainer 15a portion, so that the water is cooled. There is no leakage into the freezer compartment 13 along the container cover 15. At this time, by setting the inflow prevention wall 25 at an angle such that the upper end comes to the front side of the drainer 15a, water falling from the drainer 15a may leak into the freezer compartment 13 through the inflow prevention wall 25. No.

従って、冷凍室13内への水漏れを防止しつつ冷凍室13の温度上昇を抑えることができ、冷却性能の高い冷蔵庫とすることができる。   Therefore, the temperature rise of the freezer compartment 13 can be suppressed while preventing water leakage into the freezer compartment 13, and a refrigerator with high cooling performance can be obtained.

尚、本実施の形態において、冷凍室13を下、冷蔵室12を上に配置した構成としたが、2つの温度帯を持った冷蔵庫であれば、左右配置でも同様の効果が得られる。   In the present embodiment, the freezer compartment 13 is disposed below and the refrigerator compartment 12 is disposed above. However, if the refrigerator has two temperature zones, the same effect can be obtained even in the left-right arrangement.

また、本実施の形態においては、冷凍室13と冷蔵室12の2つの貯蔵室を持った冷蔵庫で説明したが、2つ以上の貯蔵室を持つ冷蔵庫で冷却室14の前面と背面に吸込口を持つ冷蔵庫であれば、同様の効果を得られる。   In the present embodiment, a refrigerator having two storage rooms, that is, a freezer compartment 13 and a refrigerator compartment 12, has been described. However, a suction port is provided at the front and back of the cooling compartment 14 in a refrigerator having two or more storage compartments. The same effect can be obtained if the refrigerator has a refrigerator.

また、本実施の形態においては、圧縮機1を用いた冷媒圧縮式冷凍サイクルによって冷気を生成する仕様で説明したが、冷却器4で冷気を生成する冷凍システムであれば、いかなる冷凍システムであっても同様の効果を得られる。   Further, in the present embodiment, the description has been given of the specification in which the cold air is generated by the refrigerant compression refrigeration cycle using the compressor 1, but any refrigeration system may be used as long as it is a refrigeration system that generates the cold air by the cooler 4. However, the same effect can be obtained.

本発明は、2つの貯蔵室を備える冷蔵庫であって、これらの貯蔵室の冷却を効率よく行う冷蔵庫を提供することができる。従って、本発明は、家庭用および業務用など様々な種類及び大きさの冷蔵庫等として有用である。   This invention is a refrigerator provided with two store rooms, Comprising: The refrigerator which performs cooling of these store rooms efficiently can be provided. Therefore, the present invention is useful as refrigerators of various types and sizes such as home use and business use.

4 冷却器
7 冷却ファン
8a 冷凍室送風ダンパ
9a 冷蔵室送風ダンパ
11 冷蔵庫本体
12 冷蔵室
13 冷凍室
14 冷却室
15 冷却器カバー
16 冷蔵室吐出風路
17 冷凍室吐出風路
18 冷蔵室吸込口
19 冷凍室吸込口
20 冷蔵室戻り風路
21 冷凍室戻り風路
22 加熱手段
23 水受け皿
25 流入防止壁
25a 嵌合部
DESCRIPTION OF SYMBOLS 4 Cooler 7 Cooling fan 8a Freezer compartment blower damper 9a Refrigeration compartment blower damper 11 Refrigerator body 12 Refrigerator compartment 13 Freezer compartment 14 Cooling compartment 15 Cooler cover 16 Refrigerator compartment discharge air passage 17 Freezer compartment discharge air passage 18 Refrigeration compartment inlet 19 Freezer compartment inlet 20 Refrigerating compartment return air passage 21 Freezer compartment return air passage 22 Heating means 23 Water tray 25 Inflow prevention wall 25a Fitting portion

Claims (10)

断熱壁で囲われ、前面に開口部を有した第一の貯蔵室と第二の貯蔵室と、前記第二の貯蔵室の背面側に設けた冷却室と、前記冷却室内に設けた冷却器と、前記冷却器で生成した冷気を前記第一の貯蔵室及び前記第二の貯蔵室へと循環させる冷却ファンと、前記冷却ファンによる冷却風を前記第一の貯蔵室内へと導く第一の吐出風路と、前記冷却ファンによる冷却風を前記第二の貯蔵室内へと導く第二の吐出風路と、前記第一の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第一の戻り風路と、前記第二の貯蔵室を冷却した冷却風を前記冷却室へと再び導く第二の戻り風路と、前記冷却器に付着した霜を解かした水を受ける水受け皿とを設けた冷蔵庫において、前記第一の戻り風路からの冷却風を前記冷却室へと導く第一の開口と、奥行き方向において前記第一の開口と対向する面に設けられた前記第二の戻り風路からの冷却風を前記冷却室へと導く第二の開口とを設け、前記第一の開口と前記第二の開口の間に、前記第一の開口から吐出した冷却風が前記第二の開口から前記第二の戻り風路を逆流して前記第二の貯蔵室内へと流入するのを防止する流入防止壁を備え、前記水受け皿の前記第二の開口側の壁と前記流入防止壁により、前記第二の開口から吐出した冷却風を前記冷却器の方向へと導く冷蔵庫。 A first storage chamber and a second storage chamber surrounded by a heat insulating wall and having an opening on the front surface; a cooling chamber provided on the back side of the second storage chamber; and a cooler provided in the cooling chamber A cooling fan that circulates the cold air generated in the cooler to the first storage chamber and the second storage chamber, and a first that guides cooling air from the cooling fan to the first storage chamber A discharge air passage, a second discharge air passage that guides the cooling air from the cooling fan to the second storage chamber, and a first air that guides the cooling air that has cooled the first storage chamber to the cooling chamber. A return air passage, a second return air passage that guides the cooling air that has cooled the second storage chamber to the cooling chamber, and a water receiving tray that receives water that has defrosted the cooler. In the provided refrigerator, a first opening for guiding cooling air from the first return air passage to the cooling chamber, and a depth And a second opening for guiding cooling air from the second return air passage to the cooling chamber provided on a surface facing the first opening in the direction, the first opening and the second Inflow prevention for preventing the cooling air discharged from the first opening from flowing backward from the second opening through the second return air passage into the second storage chamber A refrigerator that includes a wall and guides the cooling air discharged from the second opening toward the cooler by the wall on the second opening side of the water tray and the inflow prevention wall . 前記流入防止壁は、前記第一の開口から吐出した冷却風を冷却器の方向へと向きを変えることを特徴とした請求項1に記載の冷蔵庫。 The refrigerator according to claim 1, wherein the inflow prevention wall changes the direction of the cooling air discharged from the first opening toward the cooler. 前記第二の戻り風路を冷却室の前面側に設け、前記第一の戻り風路を冷却室の背面側に設けたことを特徴とした請求項1または2に記載の冷蔵庫。 The refrigerator according to claim 1 or 2, wherein the second return air passage is provided on the front side of the cooling chamber, and the first return air passage is provided on the back side of the cooling chamber. 前記第一の開口と前記第二の開口は、冷却器より鉛直下方側に設けたことを特徴とした請求項1から3のいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 3, wherein the first opening and the second opening are provided vertically below the cooler. 前記第一の吐出風路を選択的に閉塞または開放する第一の風路閉塞手段と、前記第二の吐出風路を選択的に閉塞または開放する第二の風路閉塞手段とを設け、前記冷却ファンの運転中は前記第一の閉塞手段と前記第二の閉塞手段を同時に開放しないことを特徴とした請求項1からのいずれか一項に記載の冷蔵庫。 A first air passage closing means for selectively closing or opening the first discharge air passage; and a second air passage closing means for selectively closing or opening the second discharge air passage; The refrigerator according to any one of claims 1 to 4 , wherein the first closing means and the second closing means are not opened simultaneously during operation of the cooling fan. 第一の貯蔵室の温度が第二の貯蔵室の温度よりも高いことを特徴とした請求項1からのいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 5 , wherein the temperature of the first storage chamber is higher than the temperature of the second storage chamber. 流入防止壁を冷却器の鉛直下方向の投影面以外に設けることを特徴とした請求項1からのいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 6, wherein an inflow prevention wall is provided on a portion other than a vertically downward projection surface of the cooler. 流入防止壁と水受け皿の間に嵌合部を設けることを特徴とした請求項1からのいずれか一項に記載の冷蔵庫。 The refrigerator according to any one of claims 1 to 7 , wherein a fitting portion is provided between the inflow prevention wall and the water tray. 第一の吐出風路、第一の戻り風路、第一の閉塞手段及び第二の閉塞手段を内部に備えるとともに、冷却器と第一の貯蔵室内を仕切るカバーを設け、前記カバーと流入防止壁を一体構造とすることを特徴とした請求項に記載の冷蔵庫。 A first discharge air passage, a first return air passage, a first closing means, and a second closing means are provided therein, and a cover for partitioning the cooler and the first storage chamber is provided to prevent the inflow from the cover. The refrigerator according to claim 5 , wherein the wall has an integral structure. 冷却器に付着した霜を解かす加熱手段を設け、第一の開口の高さは前記加熱手段の上端から下端の高さよりも広いことを特徴とした請求項1からのいずれか一項に記載の冷蔵庫。 Heating means thawing the frost adhering to the cooler is provided, in any one of the height of the first opening from claim 1 characterized by wider than the height of the lower end from an upper end of the heating means 9 The refrigerator described.
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CN201280047879.4A CN103827608B (en) 2011-09-29 2012-09-13 Freezer
PCT/JP2012/005831 WO2013046580A1 (en) 2011-09-29 2012-09-13 Refrigerator

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