JP2015001331A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2015001331A
JP2015001331A JP2013125599A JP2013125599A JP2015001331A JP 2015001331 A JP2015001331 A JP 2015001331A JP 2013125599 A JP2013125599 A JP 2013125599A JP 2013125599 A JP2013125599 A JP 2013125599A JP 2015001331 A JP2015001331 A JP 2015001331A
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Japan
Prior art keywords
blower
freezer compartment
air
supply air
refrigerator
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Pending
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JP2013125599A
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Japanese (ja)
Inventor
利治 倉谷
Toshiji Kuratani
利治 倉谷
山川　貴志
Takashi Yamakawa
貴志 山川
青木　均史
Hitoshi Aoki
均史 青木
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Haier Asia International Co Ltd
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Haier Asia International Co Ltd
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Application filed by Haier Asia International Co Ltd filed Critical Haier Asia International Co Ltd
Priority to JP2013125599A priority Critical patent/JP2015001331A/en
Priority to CN201480001784.8A priority patent/CN104412052B/en
Priority to PCT/CN2014/074621 priority patent/WO2014198153A1/en
Publication of JP2015001331A publication Critical patent/JP2015001331A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details 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
    • F25D2317/06—Details 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details 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
    • F25D2317/06—Details 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
    • F25D2317/061—Details 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 through special compartments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details 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
    • F25D2317/06—Details 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
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details 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
    • F25D2317/06—Details 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
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0682—Two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers

Landscapes

  • 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)

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of freezing food and the like inside a freezing chamber rapidly and efficiently while securing wide space for storing food and the like inside the freezing chamber.SOLUTION: A refrigerator 1 has: supply air paths 14, 16 for flowing air cooled in a cooler 33 to a freezing chamber 5; a first blower 32 for sending out the air cooled in the cooler 33 to the supply air path 14; a second blower 23 for sending out the air inside the supply air path 16 to the freezing chamber 5 during a rapid freezing operation. The supply air path 16 extends at least to an upper surface of the freezing chamber 5, and the second blower 23 is arranged at an upper surface of the freezing chamber 5. Thereby, a lot of cold air is supplied to the freezing chamber 5 and the cold air can be hit against food and the like to freeze rapidly, without damaging storage performance of the freezing chamber 5. Also, a storage property and convenience are enhanced by providing a storage container 29 for storing food and the like in the freezing chamber 5, and the food and the like can be frozen efficiently and rapidly.

Description

本発明は、貯蔵室内に食品等を冷却保存する冷蔵庫に関し、特に冷凍室内の食品等を急速に冷凍する機能を有する冷蔵庫に関する。   The present invention relates to a refrigerator that cools and stores food and the like in a storage chamber, and more particularly to a refrigerator that has a function of rapidly freezing food and the like in a freezer compartment.

従来、この種の冷蔵庫として、冷蔵庫内の全体に冷気を循環させる主たる送風機とは別に、冷凍室内の食品等を急速に冷凍するための送風機を設けた冷蔵庫が知られている（例えば、特許文献１、特許文献２）。   Conventionally, as a refrigerator of this type, a refrigerator provided with a blower for rapidly freezing food in a freezer compartment is known in addition to a main blower that circulates cold air throughout the refrigerator (for example, Patent Documents). 1, Patent Document 2).

図８は、特許文献１に開示された急速冷凍機能付き冷凍冷蔵庫１００を示す図である。図８に示すように、冷凍冷蔵庫１００は、冷却器１０９で冷却された空気を貯蔵室（冷凍室１０２、急速冷凍室１１６）内へと供給するための冷気循環用送風機１１０と、急速冷凍室１１６の奥に配置され急速冷凍室１１６内の冷気を循環させる急速冷凍用送風機１１７と、を備えている。そして、急速冷凍運転を行う際、図示しない圧縮機及び冷気循環用送風機１１０を運転して冷気を急速冷凍室１１６へと供給すると共に、急速冷凍用送風機１１７を運転して急速冷凍室１１６内の冷気を攪拌している。   FIG. 8 is a diagram showing a refrigerator-freezer 100 with a quick freezing function disclosed in Patent Document 1. As shown in FIG. As shown in FIG. 8, the refrigerator-freezer 100 includes a cool air circulation blower 110 for supplying the air cooled by the cooler 109 into the storage room (freezer room 102, quick freezer room 116), and a quick freezer room. And a quick freezing blower 117 that circulates the cool air in the quick freezing chamber 116 disposed in the back of 116. When the quick freezing operation is performed, the compressor and the cold air circulation fan 110 (not shown) are operated to supply the cold air to the quick freezing chamber 116, and the quick freezing fan 117 is operated to operate the inside of the quick freezing chamber 116. The cold air is being stirred.

また、特許文献２に開示された冷蔵庫では、前記と同様に、急速冷凍用の送風機（同文献では、循環ファンと記載されている。）を急冷専用室の後部に配置している。更に、同文献の送風機は、該吸入口が冷気導入風路に連通するよう構成されている。そのため、急速冷凍用の送風機を運転することにより、冷気導入風路からの冷気を急冷専用室内に送り込むことができる。そして、同文献に開示された冷蔵庫では、急速冷凍用の送風機によって送り込まれる冷気を急冷専用室の一部分に向けて吹き出し、該一部分のみを重点的に急冷するようにしている。   Moreover, in the refrigerator disclosed in Patent Document 2, a blower for quick freezing (described as a circulation fan in the same document) is arranged in the rear part of the quenching chamber similarly to the above. Further, the blower of the same document is configured such that the suction port communicates with the cool air introduction air passage. Therefore, by operating the blower for quick freezing, the cool air from the cool air introduction air passage can be sent into the quenching dedicated room. And in the refrigerator disclosed by the same literature, the cold air sent by the quick-freezing blower is blown out toward a part of the dedicated quenching chamber, and only the part is rapidly cooled.

特開昭６３−４６３６２号公報（第２−３頁、第１図）JP-A-63-46362 (page 2-3, FIG. 1) 特開２００２−２６７３１８号公報（第２−３頁、第１図）JP 2002-267318 A (page 2-3, FIG. 1)

しかしながら、上述した従来技術の冷蔵庫のように、冷凍室の後部に急速冷凍用の送風機を配置する構成では、冷凍室内部の食品等を収納するスペースが狭くなるという問題点があった。即ち、送風機を冷凍室内に配置すると、少なくとも送風機が占める容積に相当する分だけ食品等を収納する容積が減少してしまう。特に、急速冷凍用の送風機を冷凍室の後部（奥）に配置しているので、食品等を配置できる底面積が減少してしまうことが問題である。例えば、冷凍室の使い勝手を良くして食品等を効率的に収納するために冷凍室の内部に食品等を収納する上面が開口した引き出し自在な容器（以下、適宜「収納容器」という。）を配置する場合がある。このような収納容器を設ける場合には、該収納容器の奥行き寸法を小さくしなければならない。   However, in the configuration in which the quick freezing blower is arranged at the rear part of the freezer compartment as in the conventional refrigerator described above, there is a problem that the space for storing food in the freezer compartment becomes narrow. That is, when the blower is disposed in the freezer compartment, the volume for storing food or the like is reduced by at least the volume corresponding to the volume occupied by the blower. In particular, since the quick freezing blower is disposed in the rear part (back) of the freezer compartment, there is a problem that the bottom area where food or the like can be disposed is reduced. For example, in order to improve the usability of the freezer and efficiently store food and the like, a freely drawable container (hereinafter referred to as “storage container” as appropriate) having an open upper surface for storing food and the like inside the freezer. May be placed. When such a storage container is provided, the depth dimension of the storage container must be reduced.

また、上記したように冷凍室の内部に収納容器を配置する場合には、急速冷凍用の送風機によって吹き付けられる冷気を効率良く食品等へ当てることが困難であるという問題点があった。即ち、送風機が冷凍室の奥側に配置され、そこから前方に向けて冷気が吐出されるので、収納容器の奥側を囲む壁に邪魔されて、送風機から吐出される冷気を直接食品等に当てることができない。他方、送風機から吐出される冷気を食品等に直接当てるために収納容器の奥側の壁を低くすると、食品等が収納容器の奥側から外へ転がり落ちるなどして、収納容器の収納性能が損なわれてしまう。   Further, as described above, when the storage container is arranged inside the freezer compartment, there is a problem that it is difficult to efficiently apply the cold air blown by the quick freezing blower to the food. In other words, since the blower is arranged on the back side of the freezer compartment, and cool air is discharged forward from there, the cold air discharged from the blower directly into food etc. is obstructed by the wall surrounding the back side of the storage container. I can't guess. On the other hand, if the wall on the back side of the storage container is lowered in order to directly apply the cold air discharged from the blower to food, etc., the storage performance of the storage container will be reduced, for example, food will roll down from the back side of the storage container. It will be damaged.

本発明は、上記の事情に鑑みてなされたものであり、冷凍室の内部に食品等を収納するスペースを広く確保しつつ、冷凍室内の食品等を効率良く急速に冷凍することができる冷蔵庫を提供することを目的とする。   The present invention has been made in view of the above circumstances, and provides a refrigerator capable of efficiently and rapidly freezing food and the like in the freezer compartment while ensuring a wide space for storing food and the like inside the freezer compartment. The purpose is to provide.

本発明の冷蔵庫は、被冷凍物を収納する冷凍室と、前記冷凍室に供給する空気を冷却する冷却器と、前記冷却器で冷却された空気を前記冷凍室へと流す供給風路と、前記冷却器で冷却された空気を前記供給風路へと送り出す第１の送風機と、前記供給風路内の空気を急速冷凍運転時に前記冷凍室へと送り出す第２の送風機と、を有し、前記供給風路は、少なくとも前記冷凍室の上面まで延在し、前記第２の送風機は、前記冷凍室の上面に配置されることを特徴とする。   The refrigerator of the present invention includes a freezer compartment for storing an object to be frozen, a cooler for cooling air supplied to the freezer compartment, a supply air passage for flowing the air cooled by the cooler to the freezer compartment, A first blower that sends air cooled by the cooler to the supply air passage, and a second blower that sends air in the supply air passage to the freezer compartment during quick freezing operation, The supply air passage extends at least to the upper surface of the freezer compartment, and the second blower is disposed on the upper surface of the freezer compartment.

本発明の冷蔵庫によれば、供給風路を冷凍室の上面に配置し、急速冷凍運転時に前記供給風路から前記冷凍室内に冷気を送り出す第２の送風機を前記冷凍室の上面に配置している。これにより、冷凍室の収納性能を損なわずに食品等の急速冷凍を行うことができる。即ち、冷凍室の後方に送風機を配置しないので、冷凍室の奥行き寸法を大きくし、食品等の被冷凍物を配置する床面積を広く確保することができる。   According to the refrigerator of the present invention, the supply air passage is arranged on the upper surface of the freezer compartment, and the second blower for sending cold air from the supply air passage into the freezer compartment during the quick freezing operation is arranged on the upper surface of the freezer compartment. Yes. Thereby, quick freezing of food etc. can be performed, without impairing the storage performance of a freezer. That is, since a blower is not arranged behind the freezer compartment, the depth dimension of the freezer compartment can be increased, and a wide floor area can be ensured for placing an object to be frozen such as food.

また、第２の送風機を冷凍室の上面に配置しているので、前記冷凍室の内部に収納容器を設けた場合であっても、前記第２の送風機から吐出される冷気の流れは該収納容器の周囲壁に遮られることはない。つまり、前記第２の送風機を運転することにより、該収納容器の内部に収納された食品等に上方から直接冷気を当てることができる。このように、冷凍室内に食品等を収納する収納容器を設けて収納性及び利便性を高めつつ、食品等を効率的且つ急速に冷凍することができる。   In addition, since the second blower is disposed on the upper surface of the freezer compartment, the flow of the cold air discharged from the second blower is stored in the storage compartment even when a storage container is provided inside the freezer compartment. It is not obstructed by the surrounding wall of the container. That is, by operating the second blower, it is possible to directly apply cold air from above to food or the like stored in the storage container. In this way, food and the like can be efficiently and rapidly frozen while providing a storage container for storing the food and the like in the freezer compartment to improve storage and convenience.

また、冷凍室の上面に、該冷凍室と供給風路とを連通する吹出口と、第２の送風機が配置される開口部と、を形成している。これにより、通常の冷却運転時には、前記吹出口及び前記開口部を介して冷気を均一的に分散させて冷凍室へと供給することができる。その結果、冷凍室の内部の温度分布を均一化し、食品等を効率良く冷凍保存することができる。   Moreover, the blower outlet which connects this freezer compartment and a supply air path, and the opening part by which a 2nd air blower is arrange | positioned are formed in the upper surface of a freezer compartment. Thereby, at the time of normal cooling operation, cold air can be uniformly distributed through the outlet and the opening and supplied to the freezer compartment. As a result, the temperature distribution inside the freezer compartment can be made uniform, and food and the like can be efficiently stored frozen.

また、前記第２の送風機が配置される前記開口部は前記吹出口よりも後方に配置されるので、急速冷凍運転時には、冷却器によって冷却された空気を効率的に冷凍室へと送り出すことができる。つまり、前記第２の送風機を前記供給風路の後方側、即ち冷却器からの冷気が流れ込む方向に近づけて配置することにより、流動抵抗を小さくして、冷気の供給量を多く確保することができる。特に、前記第２の送風機を前記冷凍室の奥行方向の端部付近に配置することにより、より効果的に冷気の導入量を増やすことができる。   Moreover, since the said opening part by which the said 2nd air blower is arrange | positioned is arrange | positioned behind the said blower outlet, the air cooled by the cooler can be efficiently sent out to a freezer compartment at the time of quick freezing operation. it can. That is, by arranging the second blower behind the supply air passage, that is, close to the direction in which the cool air from the cooler flows, it is possible to reduce the flow resistance and secure a large amount of cool air supply. it can. In particular, the amount of cool air introduced can be increased more effectively by arranging the second blower near the end of the freezer compartment in the depth direction.

また、前記開口部を前記吹出口よりも後方に配置しているので、前記第２の送風機を運転することにより、前記開口部から集中して冷気を供給し該冷気を食品等に強力に吹き付けることができる。   In addition, since the opening is disposed behind the outlet, by operating the second blower, cold air is concentrated from the opening and the cold air is strongly blown onto food or the like. be able to.

また、前記第２の送風機の吹き出し方向を下方斜め前方に向けても良い。これにより、前記第２の送風機の送風効率を向上させることができる。即ち、前記第２の送風機を傾斜させて配置することにより、吸い込み側のスペースを広く確保することができ、送風効率が向上する。   Further, the blowing direction of the second blower may be directed obliquely downward and forward. Thereby, the ventilation efficiency of a said 2nd air blower can be improved. That is, by arranging the second blower to be inclined, a wide space on the suction side can be secured, and the blowing efficiency is improved.

また更に、前記第２の送風機から前方に傾斜させて冷気を吹き出すことにより、冷凍室内における冷気の循環流を促進すると共に、食品等を冷却した後の空気をスムーズに冷凍室から排出し、熱の滞留を防止することができる。即ち、収納容器の中に配置された食品等に直接冷気を当てて冷却し、冷却後の空気を該収納容器の周囲壁の上方から該周囲壁と冷凍室の側壁との間へと排出して下方へと流し帰還風路へと効率良く排出することができる。これにより、高効率な急速冷凍運転を実現することができる。   Furthermore, by inclining forward from the second blower, the cold air is blown out, thereby promoting the circulation of the cold air in the freezer compartment, and smoothly discharging the air after cooling the food etc. from the freezer compartment, Can be prevented. That is, the food placed in the storage container is cooled by directly applying cold air, and the cooled air is discharged from above the peripheral wall of the storage container to the space between the peripheral wall and the freezer compartment. It is possible to flow downward and efficiently discharge to the return air passage. Thereby, highly efficient quick freezing operation is realizable.

また更に、前記冷凍室の上面に配置された前記供給風路では、前記第２の送風機が配置された領域の高さ方向の幅は、前記吹出口が配置された領域の高さ方向の幅よりも広く形成されている。これにより、急速冷凍運転の際に、前記第２の送風機の運転によって、より多くの冷気を前記冷凍室へと供給することができる。   Still further, in the supply air passage disposed on the upper surface of the freezer compartment, the width in the height direction of the region in which the second blower is disposed is the width in the height direction of the region in which the air outlet is disposed. Is more widely formed. As a result, during the quick freezing operation, more cold air can be supplied to the freezer compartment by operating the second blower.

本発明の実施形態に係る冷蔵庫の正面外観図である。It is a front external view of the refrigerator which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の概略構造を示す側面断面図である。It is side surface sectional drawing which shows schematic structure of the refrigerator which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の上段冷凍室周辺の構造を示す側面断面図である。It is side surface sectional drawing which shows the structure of the upper stage freezer compartment of the refrigerator which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の上段冷凍室への供給風路を示す斜視図である。It is a perspective view which shows the supply air path to the upper stage freezer compartment of the refrigerator which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の第２の送風機付近の構造を示す側面断面図である。It is side surface sectional drawing which shows the structure of the 2nd air blower vicinity of the refrigerator which concerns on embodiment of this invention. 本発明の実施形態に係る冷蔵庫の通常の冷却運転における冷気の流れを説明する（Ａ）上段冷凍室周辺の側面断面図、（Ｂ）上段冷凍室への供給風路付近の斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS (A) Side surface sectional drawing of the upper stage freezer compartment periphery which demonstrates the flow of the cold air in the normal cooling driving | operation of the refrigerator which concerns on embodiment of this invention, (B) The perspective view of the supply air path vicinity to an upper stage freezer compartment. 本発明の実施形態に係る冷蔵庫の急速冷凍運転における冷気の流れを説明する（Ａ）上段冷凍室周辺の側面断面図、（Ｂ）上段冷凍室への供給風路付近の斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS (A) Side surface sectional drawing of the periphery of an upper stage freezer compartment explaining the flow of the cold air in the quick freezing operation of the refrigerator which concerns on embodiment of this invention, (B) The perspective view of the supply air path vicinity to an upper stage freezer compartment. 従来技術の冷蔵庫の例を示す急速冷凍室部分の縦断面図である。It is a longitudinal cross-sectional view of the quick freezer compartment which shows the example of the refrigerator of a prior art.

以下、本発明の実施形態に係る冷蔵庫を図面に基づき詳細に説明する。   Hereinafter, the refrigerator which concerns on embodiment of this invention is demonstrated in detail based on drawing.

図１は、本実施形態に係る冷蔵庫１の概略構造を示す正面外観図である。図２は、冷蔵庫１の右側面断面図である。   FIG. 1 is a front external view showing a schematic structure of the refrigerator 1 according to the present embodiment. FIG. 2 is a right side sectional view of the refrigerator 1.

図１に示すように、冷蔵庫１は、本体としての断熱箱体２を備え、該断熱箱体２の内部に食品等を貯蔵する貯蔵室を形成している。貯蔵室の内部は、保存温度や用途に応じて複数の収納室３〜７に区分されている。最上段が冷蔵室３、その下段左側が製氷室４で右側が上段冷凍室５、更にその下段が下段冷凍室６、最下段が野菜室７である。   As shown in FIG. 1, the refrigerator 1 includes a heat insulating box 2 as a main body, and forms a storage room for storing food and the like inside the heat insulating box 2. The interior of the storage room is divided into a plurality of storage rooms 3 to 7 according to storage temperature and usage. The uppermost stage is the refrigerator compartment 3, the lower left side is the ice making room 4, the right side is the upper freezer room 5, the lower stage is the lower stage freezer room 6, and the lowermost stage is the vegetable room 7.

断熱箱体２の前面は開口しており、前記各収納室３〜７に対応した前記開口部には、各々断熱扉８〜１２が開閉自在に設けられている。冷蔵室扉８は、右側上下部が断熱箱体２に回転自在に支持されている。また、断熱扉９〜１２は、冷蔵庫２の前方に引出自在に、断熱箱体２に支持されている。   The front surface of the heat insulation box 2 is opened, and heat insulation doors 8 to 12 are provided in the opening portions corresponding to the storage chambers 3 to 7 so as to be freely opened and closed. The refrigerator compartment door 8 is supported by the heat insulation box 2 so that the upper and lower portions on the right side are rotatable. Moreover, the heat insulation doors 9-12 are supported by the heat insulation box 2 so that it can be pulled out to the front of the refrigerator 2.

図２に示すように、冷蔵庫２の本体である断熱箱体２は、前面に開口部を有する鋼板製の外箱２ａと、該外箱２ａの内側に間隙を持たせて配設され、前面に開口部を有する合成樹脂製の内箱２ｂと、前記外箱２ａと内箱２ｂとの間隙に充填発泡された発泡ポリウレタン製の断熱材２ｃと、から構成されている。尚、各断熱扉８〜１２も、断熱箱体２と同様の断熱構造を採用している。   As shown in FIG. 2, the heat insulation box 2 which is the main body of the refrigerator 2 is disposed with a steel plate outer box 2a having an opening on the front surface and a gap inside the outer box 2a. And an inner box 2b made of synthetic resin having an opening and a heat insulating material 2c made of polyurethane foam filled and foamed in a gap between the outer box 2a and the inner box 2b. Each of the heat insulating doors 8 to 12 adopts the same heat insulating structure as that of the heat insulating box 2.

冷蔵室３と、その下段に位置する製氷室４及び上段冷凍室５との間は、断熱仕切壁３６によって仕切られている。断熱仕切壁３６は、合成樹脂の成形品であり、その内部には断熱材が充填されている。   The refrigerator compartment 3 and the ice making chamber 4 and the upper freezer compartment 5 located at the lower stage are partitioned by a heat insulating partition wall 36. The heat insulating partition wall 36 is a synthetic resin molded product, and the inside thereof is filled with a heat insulating material.

また、製氷室４と上段冷凍室５との間は、仕切壁（図面に表れない）によって仕切られている。尚、製氷室４及び上段冷凍室５と、その下段に設けられた下段冷凍室６とは、冷気が流通自在に連通している。そして、下段冷凍室６と野菜室７との間は、断熱仕切壁３７によって区分けされている。   Further, the ice making chamber 4 and the upper freezing chamber 5 are partitioned by a partition wall (not shown in the drawing). The ice making chamber 4 and the upper freezing chamber 5 and the lower freezing chamber 6 provided in the lower stage communicate with each other so that cold air can flow freely. The lower freezer compartment 6 and the vegetable compartment 7 are partitioned by a heat insulating partition wall 37.

また、内箱２ｂの内部の冷蔵室３の奥面及び天面には、冷却された空気を冷蔵室３へ流す供給風路１５が形成されている。同様に、製氷室４及び上段冷凍室５の奥側には、合成樹脂製の仕切部材３８で区画された供給風路１４が形成されている。   In addition, a supply air passage 15 through which the cooled air flows to the refrigerator compartment 3 is formed on the back surface and the top surface of the refrigerator compartment 3 inside the inner box 2b. Similarly, on the back side of the ice making chamber 4 and the upper freezing chamber 5, a supply air passage 14 partitioned by a synthetic resin partition member 38 is formed.

上段冷凍室５の上方には、合成樹脂製の仕切部材２０（仕切体）で区画され、供給風路１４に連通する供給風路１６が形成されている。そして、上段冷凍室５の上面には、急速冷凍運転時に供給風路１６内から上段冷凍室５へと冷気を送り出す第２の送風機２３が配置されている。   A supply air passage 16 that is partitioned by a synthetic resin partition member 20 (partition body) and communicates with the supply air passage 14 is formed above the upper freezer compartment 5. A second blower 23 is disposed on the upper surface of the upper freezer compartment 5 to send cold air from the supply air passage 16 to the upper freezer compartment 5 during the quick freezing operation.

内箱２ｂの内部の供給風路１４の更に奥側には、仕切部材３９で区分けされ形成された冷却室１３が設けられている。冷却室１３上部の仕切部材３９には、冷却室１３と供給風路１４とをつなぐ開口１３ａが形成されており、開口１３ａには、空気を循環させるための第１の送風機３２が配設されている。他方、冷却室１３の下方には、貯蔵室からの帰還冷気を冷却室１３の内部へと吸入する開口１３ｂが形成されている。   On the further back side of the supply air passage 14 inside the inner box 2b, there is provided a cooling chamber 13 that is divided and formed by a partition member 39. An opening 13a that connects the cooling chamber 13 and the supply air passage 14 is formed in the partition member 39 at the top of the cooling chamber 13, and a first blower 32 for circulating air is disposed in the opening 13a. ing. On the other hand, below the cooling chamber 13, an opening 13 b is formed for sucking the return cold air from the storage chamber into the cooling chamber 13.

そして、冷却室１３の内部には、循環する空気を冷却するための冷却器３３（蒸発器）が配置されている。冷却器３３は、圧縮器３１、放熱器（図示せず）、膨張弁（キャピラリーチューブ）（図示せず）に冷媒配管を介して接続されており、蒸気圧縮式の冷凍サイクル回路を構成するものである。尚、本実施形態に係る冷蔵庫１では、前記冷凍サイクルの冷媒として、イソブタン（Ｒ６００ａ）を用いている。   A cooler 33 (evaporator) for cooling the circulating air is disposed inside the cooling chamber 13. The cooler 33 is connected to the compressor 31, a radiator (not shown), and an expansion valve (capillary tube) (not shown) via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle circuit. It is. In the refrigerator 1 according to this embodiment, isobutane (R600a) is used as the refrigerant of the refrigeration cycle.

次に、上記の構成を有する冷蔵庫１の基本的な冷却動作について説明する。   Next, a basic cooling operation of the refrigerator 1 having the above configuration will be described.

先ず、前述の蒸気圧縮式冷凍サイクル回路の冷却器３３によって冷却室１３内の空気の冷却が行われる。冷却器３３によって冷却された空気は、第１の送風機３２によって冷却室１３の開口１３ａから供給風路１４へと吐出される。   First, the air in the cooling chamber 13 is cooled by the cooler 33 of the above-described vapor compression refrigeration cycle circuit. The air cooled by the cooler 33 is discharged from the opening 13 a of the cooling chamber 13 to the supply air passage 14 by the first blower 32.

そして、供給風路１４に吐出された冷却空気の一部は、風路開閉器１８（例えば、モータダンパ）によって適切な流量に調整され、供給風路１５へと流れ、冷蔵室３へと供給される。これにより、冷蔵室３の内部に貯蔵された食品等を適切な温度で冷却保存することができる。   A part of the cooling air discharged to the supply air passage 14 is adjusted to an appropriate flow rate by an air passage switch 18 (for example, a motor damper), flows to the supply air passage 15, and is supplied to the refrigerator compartment 3. The Thereby, the food etc. which were stored in the inside of the refrigerator compartment 3 can be cooled and preserve | saved at appropriate temperature.

冷蔵室３の内部に供給された冷気は、図示しない連結風路を介して野菜室７へと供給される。そして、野菜室７を循環した冷気は、帰還風路１７、冷却室１３の開口１３ｂを経て、冷却室１３の内部へと戻る。そこで、再び冷却器３３によって冷却される。   The cold air supplied to the inside of the refrigerator compartment 3 is supplied to the vegetable compartment 7 through a connection air passage (not shown). And the cold air which circulated through the vegetable compartment 7 returns to the inside of the cooling compartment 13 through the return air passage 17 and the opening 13b of the cooling compartment 13. Therefore, it is cooled again by the cooler 33.

他方、供給風路１４に吐出された冷却空気の一部は、製氷室４及び下段冷凍室６へと供給されると共に、供給風路１６を介して上段冷凍室５へと供給される。そして、製氷室４及び上段冷凍室５内部の空気は、連通する下段冷凍室６へと流れ、下段冷凍室６内部の空気は、下段冷凍室６の下部を流れ、冷却室１３の開口１３ｂを介して、冷却室１３の内部へと流れる。   On the other hand, a part of the cooling air discharged to the supply air passage 14 is supplied to the ice making chamber 4 and the lower freezing chamber 6 and also supplied to the upper freezing chamber 5 through the supply air passage 16. Then, the air inside the ice making chamber 4 and the upper freezer compartment 5 flows to the communicating lower freezer compartment 6, and the air inside the lower freezer compartment 6 flows through the lower portion of the lower freezer compartment 6, and passes through the opening 13 b of the cooling chamber 13. To the inside of the cooling chamber 13.

以上説明の通り、冷却器３３で冷却された空気が貯蔵室内を循環して、食品等の冷凍や冷却保存が行われる。   As described above, the air cooled by the cooler 33 circulates in the storage chamber, and freezing and refrigeration storage of foods and the like are performed.

次に、図３ないし図５を参照して、上段冷凍室５付近の構成、特に上段冷凍室５の上面に配置された供給風路１６及び第２の送風機２３について詳細に説明する。   Next, with reference to FIGS. 3 to 5, the configuration near the upper freezer compartment 5, particularly the supply air passage 16 and the second blower 23 disposed on the upper surface of the upper freezer compartment 5 will be described in detail.

図３は、上段冷凍室５周辺の構造を示す側面断面図（図１に示すＡ−Ａ線断面）であり、図４は、供給風路１６を示す斜視図である。図５は、第２の送風機２３付近の構造を示す側面断面図（図１に示すＡ−Ａ線断面）である。   FIG. 3 is a side cross-sectional view (cross-sectional view taken along line AA shown in FIG. 1) showing the structure around the upper freezer compartment 5, and FIG. 4 is a perspective view showing the supply air passage 16. FIG. 5 is a side cross-sectional view (a cross section taken along line AA shown in FIG. 1) showing a structure in the vicinity of the second blower 23.

図３に示すように、上段冷凍室５の上面には、合成樹脂製の仕切部材２０によって上段冷凍室５と区画された供給風路１６が配置される。即ち、供給風路１６は、仕切部材２０と断熱仕切壁３６との間に形成された空間である。   As shown in FIG. 3, a supply air passage 16 that is separated from the upper freezer compartment 5 by a synthetic resin partition member 20 is disposed on the upper surface of the upper freezer compartment 5. That is, the supply air passage 16 is a space formed between the partition member 20 and the heat insulating partition wall 36.

供給風路１６は、吹出口２８を介して供給風路１４と連通している。また、供給風路１６には、供給風路１６と上段冷凍室５とを連通する吹出口２１及び開口部２２が形成されている。これにより、上段冷凍室５に冷気を供給する経路が形成される。つまり、上段冷凍室５に冷気を供給する供給風路は上段冷凍室５の上面まで延在しており、その上面まで延在した領域が供給風路１６である。   The supply air passage 16 communicates with the supply air passage 14 through the air outlet 28. Further, the supply air passage 16 is formed with an air outlet 21 and an opening 22 that connect the supply air passage 16 and the upper freezer compartment 5. Thereby, the path | route which supplies cold air to the upper stage freezer compartment 5 is formed. In other words, the supply air passage that supplies the cold air to the upper freezer compartment 5 extends to the upper surface of the upper freezer compartment 5, and the region that extends to the upper surface is the supply air passage 16.

尚、上段冷凍室５には、食品等の被冷凍物を収納するための収納容器２９が設けられている。収納容器２９は、上方が開口した略箱形状の合成樹脂製の容器である。収納容器２９は、断熱扉１０に固定された図示しない枠体に組み込まれており、断熱扉１０と共に前方に引き出し自在に構成されている。   Note that the upper freezer compartment 5 is provided with a storage container 29 for storing an object to be frozen such as food. The storage container 29 is a substantially box-shaped synthetic resin container opened upward. The storage container 29 is incorporated in a frame (not shown) fixed to the heat insulating door 10, and is configured to be able to be drawn forward together with the heat insulating door 10.

本実施形態では、急速冷凍用の第２の送風機を上段冷凍室の上面に配置しているので、収納容器２９の底面積を広く確保し、収納効率を向上させることができる。即ち、急速冷凍用の送風機を冷凍室の後部（奥側面）に配置していないので、収納容器２９の奥行き寸法を大きくすることができる。   In the present embodiment, since the second blower for quick freezing is arranged on the upper surface of the upper freezer compartment, a large bottom area of the storage container 29 can be secured, and storage efficiency can be improved. That is, since the blower for quick freezing is not arranged in the rear part (back side surface) of the freezing room, the depth dimension of the storage container 29 can be increased.

図４に示すように、吹出口２１は、上段冷凍室５の内部に均一的に冷気を供給するよう所定の形状及び配置で複数個形成されている。開口部２２は、吹出口２１よりも後方、即ち上段冷凍室５の奥側に形成されており、開口部２２には、第２の送風機２３が配置される。換言すれば、第２の送風機は、吹出口２１よりも後方に配置され、供給風路１４からの冷気が流れ込む吹出口２８の近傍に設けられる。   As shown in FIG. 4, a plurality of air outlets 21 are formed in a predetermined shape and arrangement so as to uniformly supply cold air into the upper freezer compartment 5. The opening 22 is formed behind the outlet 21, that is, on the back side of the upper freezer compartment 5, and the second blower 23 is disposed in the opening 22. In other words, the second blower is disposed behind the outlet 21 and is provided in the vicinity of the outlet 28 through which the cold air from the supply air passage 14 flows.

第２の送風機２３は、回転式のファン２３ａ（例えば、プロペラファン）と、ケーシング２３ｂと、図示しないファンモータと、を備えた軸流送風機である。第２の送風機２３は、ケーシング２３ｂが仕切部材２０の上面側、即ち供給風路１６側に固定される。   The second blower 23 is an axial blower including a rotary fan 23a (for example, a propeller fan), a casing 23b, and a fan motor (not shown). As for the 2nd air blower 23, the casing 23b is fixed to the upper surface side of the partition member 20, ie, the supply air path 16 side.

仕切部材２０の後部、即ち奥側には、供給風路１６の高さが後方に向かって徐々に高くなるように下方に傾斜した傾斜面２０ａが形成されている。そして、傾斜面２０ａには、開口部２２が形成され、開口部２２に第２の送風機２３が配設される。つまり、供給風路１６の高さ方向の幅は、吹出口２１が形成される領域では狭く、第２の送風機２３が配置される領域では広くなっている。   An inclined surface 20a that is inclined downward is formed at the rear portion, that is, the back side of the partition member 20, so that the height of the supply air passage 16 gradually increases toward the rear. And the opening part 22 is formed in the inclined surface 20a, and the 2nd air blower 23 is arrange | positioned in the opening part 22. FIG. That is, the width in the height direction of the supply air passage 16 is narrow in the region where the blower outlet 21 is formed, and is wide in the region where the second blower 23 is disposed.

また、第２の送風機２３は傾斜面２０ａに配置されるので、ファン２３ａの回転軸は、垂直ではなく、冷蔵庫１の前後方向に傾いている。具体的には、第２の送風機２３は、その吹き出し方向（ファン２３ａの吹き出し側の回転軸方向）が下方を向き、且つ前方に傾斜して配置される。   Moreover, since the 2nd air blower 23 is arrange | positioned at the inclined surface 20a, the rotating shaft of the fan 23a is not vertical but inclines in the front-back direction of the refrigerator 1. FIG. Specifically, the second blower 23 is disposed such that its blowing direction (rotational axis direction on the blowing side of the fan 23a) is directed downward and inclined forward.

また、図５に示すように、傾斜面２０ａには、第２の送風機２３が配設される部分に凹部２０ｂが形成されている。凹部２０ｂは、第２の送風機２３が固定される領域及びその近傍のみが供給風路１６側では凹み、上段冷凍室５側へ突出している。   Moreover, as shown in FIG. 5, the inclined surface 20a is formed with a recess 20b in a portion where the second blower 23 is disposed. Only the region where the second blower 23 is fixed and the vicinity thereof are recessed on the supply air passage 16 side, and the recess 20b protrudes toward the upper freezer compartment 5 side.

このように、凹部２０ｂを形成することにより、第２の送風機２３の吸入側のスペースを広く確保することができ、第２の送風機の送風効率を向上させ、冷気の吹き出し量を増大させることができる。また、第２の送風機２３を配置するために必要な最低限の領域のみに凹部２０ｂを形成することにより、上段冷凍室５の収納容積を広く確保することができる。   Thus, by forming the recess 20b, it is possible to secure a wide space on the suction side of the second blower 23, improve the blowing efficiency of the second blower, and increase the amount of cool air blown out. it can. Moreover, the storage capacity of the upper freezer compartment 5 can be secured widely by forming the recess 20b only in the minimum area necessary for arranging the second blower 23.

ここで、開口部２２は、略円形状に形成されており、その直径Ｄは、ファン２３ａの外径ｄｆと同じかそれよりも大きく、ケーシング２３ｂの風洞部の内径Ｄｃと同じかそれよりも小さい。   Here, the opening 22 is formed in a substantially circular shape, and its diameter D is equal to or larger than the outer diameter df of the fan 23a, and is equal to or larger than the inner diameter Dc of the wind tunnel portion of the casing 23b. small.

このように、開口部２２の直径Ｄをファン２３ａの外径ｄｆ以上とすることにより、第２の送風機２３から吹き出される空気の流動抵抗を小さく抑えることができる。また、開口部２２の直径Ｄを風洞部の内径Ｄｃ以下とすることにより、ファン２３ａの回転半径方向へと吹出す流れを抑制し、軸方向への流れを強めることができる。これにより、第２の送風機２３から吹き出される冷気を食品等に効率的に当てて、急速冷凍の効果を高めることができる。   Thus, by making the diameter D of the opening 22 equal to or larger than the outer diameter df of the fan 23a, the flow resistance of the air blown out from the second blower 23 can be kept small. Further, by setting the diameter D of the opening portion 22 to be equal to or smaller than the inner diameter Dc of the wind tunnel portion, it is possible to suppress the flow that blows out in the rotational radius direction of the fan 23a and to increase the flow in the axial direction. Thereby, the cold air blown out from the second blower 23 can be efficiently applied to food or the like, and the effect of quick freezing can be enhanced.

尚、開口部２２は、前述の通り、全体形状が略円形状に形成されるが、その開口部分には、人体等がファン２３ａに接触することを防止して安全性を確保するために、例えば、格子状や同心円状の図面に表れないファンガード構造を設けている。   As described above, the opening 22 is formed in a substantially circular shape as described above. However, in order to prevent the human body and the like from coming into contact with the fan 23a and ensure safety at the opening, For example, a fan guard structure that does not appear in a lattice or concentric drawing is provided.

次に、図６及び図７を参照して、上段冷凍室５への冷気の供給及び急速冷凍運転の動作について説明する。   Next, with reference to FIG.6 and FIG.7, supply of the cool air to the upper stage freezer compartment 5 and operation | movement of a quick freezing operation are demonstrated.

先ず、通常の冷却運転における冷気の流れについて説明する。図６（Ａ）は、冷蔵庫１の通常の冷却運転における冷気の流れを説明する上段冷凍室５周辺の側面断面図であり、同図（Ｂ）は、供給風路１６付近の斜視図である。   First, the flow of cold air in a normal cooling operation will be described. 6A is a side cross-sectional view of the vicinity of the upper freezer compartment 5 for explaining the flow of cold air in the normal cooling operation of the refrigerator 1, and FIG. 6B is a perspective view of the vicinity of the supply air passage 16. .

図６（Ａ）及び（Ｂ）に示すように、通常の冷却運転では、冷却室１３から第１の送風機３２によって供給風路１４に送り出された冷気の一部は、吹出口２８を通過して、供給風路１６へと流れ込む。尚、既に説明したように、通常の冷却運転においては、供給風路１４内の冷気の一部は、製氷室４（図２参照）や下段冷凍室６に供給されると共に、供給風路１５を介して冷蔵室３へと供給される。   As shown in FIGS. 6A and 6B, in normal cooling operation, a part of the cold air sent from the cooling chamber 13 to the supply air passage 14 by the first blower 32 passes through the air outlet 28. Into the supply air passage 16. As already described, in the normal cooling operation, a part of the cold air in the supply air passage 14 is supplied to the ice making chamber 4 (see FIG. 2) and the lower freezer compartment 6, and the supply air passage 15 is provided. Is supplied to the refrigerator compartment 3 via

供給風路１４から供給風路１６へと流れ込んだ冷気は、仕切部材２０に形成された吹出口２１及び開口部２２を通過して上段冷凍室５へと流れ込む。ここで、開口部２２に配置された第２の送風機２３は運転されないが、ケーシング２３ｂの風洞部、即ち停止した状態のファン２３ａの周辺を冷気が通過する。   The cold air flowing from the supply air passage 14 to the supply air passage 16 passes through the outlet 21 and the opening 22 formed in the partition member 20 and flows into the upper freezer compartment 5. Here, although the 2nd air blower 23 arrange | positioned at the opening part 22 is not drive | operated, cold air passes the wind tunnel part of the casing 23b, ie, the periphery of the fan 23a of the stopped state.

このように、本実施形態では、供給風路１６が上段冷凍室５の上面に配置されているので、上段冷凍室５の上方から冷気を送り込むことができる。そのため、収納容器２９の内部に配置された食品等の被冷凍物Ｘに効率的に冷気を供給することができる。   Thus, in this embodiment, since the supply air path 16 is arrange | positioned at the upper surface of the upper stage freezer compartment 5, cold air can be sent in from the upper part of the upper stage freezer compartment 5. FIG. Therefore, it is possible to efficiently supply cold air to the frozen object X such as food disposed inside the storage container 29.

また、吹出口２１を複数個形成し、尚且つ開口部２２からも冷気を供給することができるので、上段冷凍室５の内部に冷気を分散して供給することができる。これにより、上段冷凍室５内部の温度分布を均一にすることができる。   Moreover, since a plurality of outlets 21 are formed and cold air can be supplied from the opening 22, the cold air can be distributed and supplied into the upper freezer compartment 5. Thereby, the temperature distribution inside the upper freezer compartment 5 can be made uniform.

上段冷凍室５に供給された冷気は、収納容器２９の内側底部から該収納容器２９の周囲壁の上縁部を超えて、または該周囲壁の上部に形成された通気孔２９ａを介して該周囲壁の外側へと流れる。そして、該冷気は、前記周囲壁と上段冷凍室５の内壁（側壁）との間を通過し、下方にある下段冷凍室６へと流れる。   The cold air supplied to the upper freezer compartment 5 passes through the vent hole 29a formed from the inner bottom of the storage container 29 to the upper edge of the peripheral wall of the storage container 29 or at the top of the peripheral wall. It flows to the outside of the surrounding wall. The cold air passes between the surrounding wall and the inner wall (side wall) of the upper freezer compartment 5 and flows to the lower freezer compartment 6 located below.

次に、急速冷凍運転における冷気の流れについて説明する。図７（Ａ）は、冷蔵庫１の急速冷凍運転における冷気の流れを説明する上段冷凍室５周辺の側面断面図であり、同図（Ｂ）は、供給風路１６付近の斜視図である。   Next, the flow of cold air in the quick freezing operation will be described. FIG. 7A is a side cross-sectional view of the vicinity of the upper freezer compartment 5 for explaining the flow of cold air in the quick freezing operation of the refrigerator 1, and FIG. 7B is a perspective view of the vicinity of the supply air passage 16.

急速冷凍運転時には、第２の送風機２３が運転される。尚、第１の送風機３２も通常の冷却運転と同様に運転されている。その結果、図７（Ａ）及び（Ｂ）に示すように、供給風路１４内の冷気の多くは、第２の送風機２３によって吸引され、供給風路１６へと流れ込む。即ち、供給風路１４から直接製氷室４（図２参照）や下段冷凍室６に流れ込む冷気や、供給風路１５を介して冷蔵室３に流れ込む冷気は、大きく減少する。   During the quick freezing operation, the second blower 23 is operated. The first blower 32 is also operated in the same manner as a normal cooling operation. As a result, as shown in FIGS. 7A and 7B, much of the cold air in the supply air passage 14 is sucked by the second blower 23 and flows into the supply air passage 16. That is, the cold air flowing directly from the supply air passage 14 into the ice making chamber 4 (see FIG. 2) and the lower freezer compartment 6 and the cold air flowing into the refrigerator compartment 3 through the supply air passage 15 are greatly reduced.

そして、供給風路１６内の冷気は、第２の送風機２３によって上段冷凍室５の内部へと送り込まれる。ここで、第２の送風機２３によって供給風路１６内の冷気が強制的に吐出されるので、吹出口２１を介する冷気の流れは殆どなくなり、略全ての冷気が集中して開口部２２を流れる。   Then, the cold air in the supply air passage 16 is sent into the upper freezer compartment 5 by the second blower 23. Here, since the cold air in the supply air passage 16 is forcibly discharged by the second blower 23, the flow of the cold air through the air outlet 21 is almost eliminated, and almost all the cold air is concentrated and flows through the opening 22. .

このように、第２の送風機２３を運転することにより、より多くの冷気を上段冷凍室５へと供給することができ、上段冷凍室５内の冷凍能力を増大させることができる。特に、第２の送風機２３を供給風路１４に近い上段冷凍室５の後方に配置しているので、吹出口２８から流れ込む冷気を小さな流動抵抗で多量に導入することができる。   Thus, by operating the 2nd air blower 23, more cold air can be supplied to the upper stage freezer compartment 5, and the freezing capacity in the upper stage freezer compartment 5 can be increased. In particular, since the second blower 23 is disposed behind the upper freezer compartment 5 close to the supply air passage 14, a large amount of cold air flowing from the outlet 28 can be introduced with a small flow resistance.

また、第２の送風機２３によって、開口部２２から冷気を集中して吹き出し、該冷気を収納容器２９の内部に置かれた被冷凍物Ｘに直接当てることができる。特に、第２の送風機２３を上段冷凍室５の上面に配置しているので、収納容器２９の周囲壁を低くして収納性能を損なうことなく、収納容器２９の上方から冷気を送り込むことが可能となる。これにより、収納性を確保しつつ、被冷凍物Ｘを効率的に冷却し、短時間で凍結させることができる。   Further, the second blower 23 can concentrate and blow out the cold air from the opening 22, and can directly apply the cold air to the object to be frozen X placed inside the storage container 29. In particular, since the second blower 23 is arranged on the upper surface of the upper freezer compartment 5, it is possible to feed cold air from above the storage container 29 without lowering the peripheral wall of the storage container 29 and impairing the storage performance. It becomes. Thereby, the to-be-frozen object X can be cooled efficiently and can be frozen in a short time, ensuring storage property.

また、第２の送風機２３は、吹き出し方向がやや前方を向くように傾斜して設置されているので、第２の送風機２３から強力に吹き付けられた冷気は、前方向にも流れる。これにより、上段冷凍室５の内部に好適な循環流が形成され、熱の滞留を防止して温度の均一化が図れると共に、効率的な帰還流が形成され、冷気の排出がスムーズに行われる。   Moreover, since the 2nd air blower 23 is inclined and installed so that the blowing direction may face a little forward, the cold air strongly blown from the 2nd air blower 23 also flows forward. As a result, a suitable circulation flow is formed inside the upper freezing chamber 5, heat retention is prevented and the temperature is made uniform, an efficient return flow is formed, and cool air is discharged smoothly. .

以上説明のように、本実施形態では、第２の送風機２３を運転することによって、高効率に急速冷凍運転を行うことができる。本急速冷凍運転によって、被冷凍物Ｘが冷蔵庫１に入れられてから冷凍されて所定の保冷温度に達するまでの所要時間を、通常の冷却運転における同所要時間の半分以下に短縮することができる。   As described above, in the present embodiment, by operating the second blower 23, the quick freezing operation can be performed with high efficiency. By this quick freezing operation, the time required for the object X to be frozen after it is frozen in the refrigerator 1 to reach a predetermined cold temperature can be shortened to less than half of the required time in the normal cooling operation. .

次に、急速冷凍運転の制御動作について説明する。本実施形態では、ユーザからの指示により急速冷凍運転を開始する。ユーザからの指示は、図示しない入力手段（例えば、操作ボタン等）によって行われる。   Next, the control operation of the quick freezing operation will be described. In the present embodiment, the quick freezing operation is started by an instruction from the user. An instruction from the user is given by an input means (for example, an operation button) not shown.

尚、例えば、上段冷凍室５の内部の温度または被冷凍物Ｘの温度を検出する温度検出手段（図示せず）を設け、当該温度検出手段によって検出された温度を基に、急速冷凍運転が必要か否かを判断して、急速冷凍運転を開始しても良い。更に、断熱扉１０の開閉を検出するドアセンサ等を設けて、当該ドアセンサ等の検出値を演算の参考にしても良い。   For example, a temperature detecting means (not shown) for detecting the temperature inside the upper freezer compartment 5 or the temperature of the object X is provided, and the quick freezing operation is performed based on the temperature detected by the temperature detecting means. The quick freezing operation may be started by determining whether or not it is necessary. Furthermore, a door sensor or the like that detects opening and closing of the heat insulating door 10 may be provided, and the detection value of the door sensor or the like may be used as a reference for calculation.

急速冷凍運転が開始されると、前述の通り、第２の送風機２３が運転される。この時、第１の送風機３２や圧縮機３１（図２参照）は、通常の冷却運転と同様に、運転される。ここで、急速冷凍運転時に冷却器３３（図２参照）における冷凍能力を増大させる制御を行っても良い、具体的には、圧縮機３１の運転周波数上げる、放熱器（図示せず）用のファン（図示せず）の回転数を上げる、膨張弁（図示せず）の開度を大きくする等の制御を行っても良い。これにより、急速冷凍時の冷凍能力を更に増大することができる。   When the quick freezing operation is started, as described above, the second blower 23 is operated. At this time, the 1st air blower 32 and the compressor 31 (refer FIG. 2) are drive | operated similarly to a normal cooling operation. Here, control for increasing the refrigeration capacity in the cooler 33 (see FIG. 2) during the quick freezing operation may be performed. Specifically, for a radiator (not shown) that increases the operating frequency of the compressor 31. Controls such as increasing the rotational speed of a fan (not shown) and increasing the opening of an expansion valve (not shown) may be performed. Thereby, the refrigerating capacity at the time of quick freezing can further be increased.

また、第２の送風機２３を運転する間は、供給風路１４から供給風路１５へと流れる冷気の流量を調整する風路開閉器１８を閉じるよう制御しても良い。これにより、第２の送風機２３によって生じる供給風路１４内の負圧により、冷蔵室３の空気が供給風路１５を逆流し、急速冷凍の効果が低下するという不具合を防止することができる。   Moreover, while operating the 2nd air blower 23, you may control to close the air path switch 18 which adjusts the flow volume of the cool air which flows into the supply air path 15 from the supply air path 14. FIG. Thereby, the negative pressure in the supply air path 14 which arises with the 2nd air blower 23 can prevent the malfunction that the air of the refrigerator compartment 3 flows back through the supply air path 15, and the effect of quick freezing falls.

そして、急速冷凍運転を開始してから所定の時間が経過したら、第２の送風機２３を停止して急速冷凍運転を終了し、通常の冷却運転に戻る。ここで、所定の時間とは、被冷凍物Ｘの凍結が完了するまでに要する時間として、予め設定された時間である。尚、前述の温度検出手段によって検出された上段冷凍室５の内部の温度または被冷凍物Ｘの温度を基準にして、急速冷凍運転の停止を判断することもできる。   When a predetermined time has elapsed since the start of the quick freezing operation, the second blower 23 is stopped, the quick freezing operation is terminated, and the normal cooling operation is resumed. Here, the predetermined time is a time set in advance as a time required for the freezing of the article X to be frozen. The stop of the quick freezing operation can also be determined based on the temperature inside the upper freezer compartment 5 detected by the temperature detecting means or the temperature of the article X to be frozen.

以上、本発明の実施形態に係る冷蔵庫について説明したが、本発明は、これに限定されるものではなく、本発明の要旨を逸脱しない範囲で、種々の変更が可能である。   As mentioned above, although the refrigerator which concerns on embodiment of this invention was demonstrated, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention.

１ 冷蔵庫
２ 断熱箱体
３ 冷蔵室
４ 製氷室
５ 上段冷凍室
６ 下段冷凍室
７ 野菜室
１３ 冷却室
１４ 供給風路
１５ 供給風路（冷蔵室用）
１６ 供給風路（上段冷凍室用）
２０ 仕切部材
２１ 吹出口
２２ 開口部
２３ 第２の送風機
２３ａ ファン
２３ｂ ケーシング
２９ 収納容器
３２ 第１の送風機
３３ 冷却器
Ｘ 被冷凍物 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 3 Refrigerating room 4 Ice making room 5 Upper stage freezing room 6 Lower stage freezing room 7 Vegetable room 13 Cooling room 14 Supply air path 15 Supply air path (for refrigerating room)
16 Supply air path (for upper freezer compartment)
DESCRIPTION OF SYMBOLS 20 Partition member 21 Outlet 22 Opening part 23 2nd air blower 23a Fan 23b Casing 29 Storage container 32 1st air blower 33 Cooler X Subject to be frozen

Claims (4)

被冷凍物を収納する冷凍室と、
前記冷凍室に供給する空気を冷却する冷却器と、
前記冷却器で冷却された空気を前記冷凍室へと流す供給風路と、
前記冷却器で冷却された空気を前記供給風路へと送り出す第１の送風機と、
前記供給風路内の空気を急速冷凍運転時に前記冷凍室へと送り出す第２の送風機と、を有し、
前記供給風路は、少なくとも前記冷凍室の上面まで延在し、
前記第２の送風機は、前記冷凍室の上面に配置されることを特徴とする冷蔵庫。 A freezer compartment for storing the object to be frozen;
A cooler for cooling air supplied to the freezer;
A supply air passage for flowing air cooled by the cooler to the freezer compartment;
A first blower for sending air cooled by the cooler to the supply air passage;
A second blower for sending air in the supply air passage to the freezer compartment during quick freezing operation,
The supply air path extends at least to the upper surface of the freezer compartment,
The refrigerator, wherein the second blower is disposed on an upper surface of the freezer compartment. 前記冷却器は、前記冷凍室よりも後方に配置され、
前記冷凍室の上面には、該冷凍室と前記供給風路とを連通する吹出口と、前記第２の送風機が配置される開口部と、が形成され、
前記開口部は、前記吹出口よりも後方に形成されることを特徴とする請求項１に記載の冷蔵庫。 The cooler is arranged behind the freezer compartment,
On the upper surface of the freezer compartment, an air outlet that communicates the freezer compartment and the supply air passage, and an opening in which the second blower is disposed, are formed.
The refrigerator according to claim 1, wherein the opening is formed behind the outlet. 前記開口部は、前記冷凍室の奥行方向の端部の上方近傍に配置され、
前記第２の送風機は、吹き出し方向が下方且つ前方に傾斜して配置されることを特徴とする請求項１または請求項２に記載の冷蔵庫。 The opening is disposed near the upper end of the freezing chamber in the depth direction,
The refrigerator according to claim 1 or 2, wherein the second blower is disposed such that a blowing direction is inclined downward and forward. 前記冷凍室の上面に配置された前記供給風路では、前記第２送風機が配置された領域の高さ方向の幅は、前記吹出口が形成された領域の高さ方向の幅よりも広く形成されることを特徴とする請求項３に記載の冷蔵庫。   In the supply air path arranged on the upper surface of the freezer compartment, the width in the height direction of the area where the second blower is arranged is wider than the width in the height direction of the area where the air outlet is formed. The refrigerator according to claim 3.
JP2013125599A 2013-06-14 2013-06-14 Refrigerator Pending JP2015001331A (en)

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