JP6422513B2 - Freezer refrigerator - Google Patents

Freezer refrigerator Download PDF

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JP6422513B2
JP6422513B2 JP2016574549A JP2016574549A JP6422513B2 JP 6422513 B2 JP6422513 B2 JP 6422513B2 JP 2016574549 A JP2016574549 A JP 2016574549A JP 2016574549 A JP2016574549 A JP 2016574549A JP 6422513 B2 JP6422513 B2 JP 6422513B2
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cooler
refrigerator
return air
freezer
room
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JPWO2016129050A1 (en
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有希 伊藤
有希 伊藤
浩史 宮崎
浩史 宮崎
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Mitsubishi Electric Corp
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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling 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
    • 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
    • F25D17/08—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 using ducts
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating

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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)
  • Defrosting Systems (AREA)

Description

本発明は、ダンパ装置を備えた冷凍冷蔵庫に関するものである。   The present invention relates to a refrigerator-freezer provided with a damper device.

従来の冷凍冷蔵庫として、例えば、貯蔵室を循環して冷却器室に流入してきた空気が冷却器にて熱交換されて冷却された後に冷却された空気（冷気）が貯蔵室へ送り出され、貯蔵室へ送り出された空気が貯蔵室内を循環して貯蔵室内を冷却するものがある。冷気を貯蔵室内に循環させるために、冷凍冷蔵庫内には冷却器と各貯蔵庫をつなぐ風路が設けられており、それらのうち食品貯蔵室から冷却器へ冷気を戻す経路である戻り風路にダンパを取り付けた冷凍冷蔵庫が知られている。ここで、貯蔵室を循環した空気は湿気を多く含んでいるため、その湿気を含んだ空気が冷却器室に流入して冷却器で熱交換されると、次第に冷却器に霜が付着する。冷却器に霜が付着すると、フィン間が霜で詰まって冷凍能力が低下するため、定期的に冷却器周辺（主に冷却器下部）に備えられた除霜ヒータに通電し、冷却器を温めることで除霜している。   As a conventional refrigerator-freezer, for example, air that has circulated through the storage room and flows into the cooler room is cooled by heat exchange in the cooler and then cooled (cool air) is sent to the storage room for storage. In some cases, the air sent to the chamber circulates in the storage chamber and cools the storage chamber. In order to circulate the cold air into the storage room, an air passage connecting the cooler and each storage is provided in the refrigerator-freezer, and among these, a return air passage is a path for returning the cold air from the food storage room to the cooler. A refrigerator-freezer equipped with a damper is known. Here, since the air circulated through the storage chamber contains a lot of moisture, when the air containing the moisture flows into the cooler chamber and heat exchange is performed in the cooler, frost gradually adheres to the cooler. When the frost adheres to the cooler, the fins are clogged with frost and the refrigeration capacity decreases. Therefore, the defrost heater provided around the cooler (mainly at the lower part of the cooler) is regularly energized to warm the cooler. Defrosting.

特許文献１には、冷凍冷蔵庫の省エネルギー化をするにあたり、冷却器から食品貯蔵室へ冷気を送る送風路にダンパを設置するだけでなく、食品貯蔵室から冷却器へ冷気を送る戻り風路にもダンパを設け、圧縮機停止時及び除霜運転時にダンパを閉じる冷凍冷蔵庫が開示されている。この技術により、圧縮機停止時に生じる冷却器の温度上昇が食品貯蔵室へ伝わることを抑制している。また、除霜運転時におけるヒータ使用による熱が食品貯蔵室へ伝わることを抑制している。   In Patent Document 1, in order to save energy in a refrigerator-freezer, not only a damper is installed in the air passage that sends cold air from the cooler to the food storage room, but also a return air passage that sends cold air from the food storage room to the cooler. There is also disclosed a refrigerator-freezer that is provided with a damper and closes the damper when the compressor is stopped and when the defrosting operation is performed. With this technology, the temperature rise of the cooler that occurs when the compressor is stopped is prevented from being transmitted to the food storage room. Moreover, it is suppressing that the heat by heater use at the time of a defrost operation is transmitted to a food storage room.

また、特許文献２には、複数の断熱区画を有する冷凍冷蔵庫において、断熱区画と冷却器とを連通する吐出風路及び戻り風路が設けられ、冷凍温度帯よりも高温の断熱区画と冷却器とが連通する戻り風路内にダンパが設けられた冷凍冷蔵庫が開示されている。これは特許文献１に開示された技術による効果に加え、ダンパを冷凍温度帯より高温の断熱区画の戻り風路内に設置することで、ダンパ自身の氷結、着霜を防ぐ効果がある。   Further, in Patent Document 2, in a refrigerator / freezer having a plurality of heat insulation compartments, a discharge air passage and a return air passage communicating the heat insulation compartment and the cooler are provided, and the heat insulation compartment and the cooler having a temperature higher than the refrigeration temperature zone. There is disclosed a refrigerator-freezer in which a damper is provided in a return air passage communicating with. In addition to the effect by the technique disclosed in Patent Document 1, this has the effect of preventing the icing and frosting of the damper itself by installing the damper in the return air path of the heat insulating compartment higher than the freezing temperature zone.

特開２００４−６９２４５号公報JP 2004-69245 A 特開２００８−１３８９８１号公報JP 2008-138981 A

冷凍冷蔵庫には、冷却された空気（冷気）を貯蔵室内に循環させるために冷却器と各貯蔵庫をつなぐ風路が設けられている。異なる温度帯の貯蔵室から冷却器へつながっている戻り風路には、冷凍室からの戻り風路に設けられた冷凍室用戻り風路ダンパや、冷蔵室、野菜室からの戻り風路に設けられた冷蔵室用、野菜室用戻り風路ダンパなど、それぞれダンパを設置する構造とすることで、冷気漏れを防ぐ構造となっていた。この構造は、複数のダンパを使用するため、コストがかさむという課題があった。   The refrigerator-freezer is provided with an air passage connecting the cooler and each storage in order to circulate cooled air (cold air) into the storage chamber. The return air path connected to the cooler from the storage room in a different temperature zone includes the return air path damper for the freezer room provided in the return air path from the freezer room, the return air path from the refrigerator room, and the vegetable room. It has a structure that prevents cold air leakage by adopting a structure in which dampers are installed, such as a provided cold storage room and a vegetable room return air path damper. Since this structure uses a plurality of dampers, there is a problem that costs increase.

また、冷凍冷蔵庫内に戻り風路ダンパを複数設置することで、戻り風路ダンパを設置するスペースにより食品貯蔵スペースが奪われてしまうという課題もあった。一方、戻り風路ダンパを設置する必要のないように戻り風路出口を除霜ヒータより下部に設けると、冷気の通る風路を大きく（長く）設置しなければならず、食品貯蔵スペースが奪われてしまうという課題があった。   Moreover, there also existed a subject that food storage space would be taken away by the space which installs a return air path damper by installing a plurality of return air path dampers in a refrigerator-freezer. On the other hand, if the return air passage outlet is provided below the defrost heater so that the return air passage damper is not required, the air passage through which the cold air passes must be installed longer (longer), and the food storage space is lost. There was a problem of being broken.

また、特許文献１に開示されている技術では、貯蔵室から冷却器への戻り風路ダンパを冷却器の近くに設置している。冷凍温度帯の区画の近くに戻り風路ダンパを配置すると、野菜室からの戻り風路のように戻ってくる冷気の湿度が高い場合には、戻り風路ダンパに結露が発生する。戻り風路ダンパに水滴が付着すると、戻り風路ダンパが閉じる圧縮機停止時に戻り風路ダンパが閉じた状態のまま氷結してしまう。これにより、戻り風路ダンパが開かず、食品貯蔵スペースに冷却風が送られず、食品貯蔵スペースを冷却できなくなってしまうという課題があった。 In the technology disclosed in Patent Document 1, a return air path damper from the storage chamber to the cooler is installed near the cooler. When the return air damper is disposed near the compartment of the freezing temperature zone, dew condensation occurs in the return air damper when the humidity of the cold air returning from the vegetable room is high, such as the return air path. If water droplets adhere to the return air path damper, the return air path damper is frozen while the return air path damper is closed when the compressor is stopped. Accordingly, there is a problem that the return air path damper is not opened, the cooling air is not sent to the food storage space, and the food storage space cannot be cooled.

一方、特許文献２に開示されている技術のように、冷凍温度帯より高い貯蔵室の戻り風路に戻り風路ダンパを設置すると、戻り風路ダンパが氷結して戻り風路ダンパが開閉できなくなるという可能性は下がる。しかし、戻り風路ダンパの設置位置が冷却器から離れてしまうため、除霜ヒータの熱が戻り風路を伝わり、ダンパ設置位置までの戻り風路を温めてしまう。これにより、除霜ヒータの熱が効率的に使われないという課題があった。   On the other hand, when the return air path damper is installed in the return air path of the storage room higher than the freezing temperature zone as in the technique disclosed in Patent Document 2, the return air path damper is frozen and the return air path damper can be opened and closed. The possibility of disappearing goes down. However, since the installation position of the return air path damper is away from the cooler, the heat of the defrost heater is transmitted through the return air path and warms the return air path to the damper installation position. Thereby, the subject that the heat of a defrost heater was not used efficiently occurred.

本発明は、上記のような課題を解決するためになされたもので、冷凍温度帯よりも温度の高い貯蔵室（例えば冷蔵室、野菜室）からの戻り風路の冷却器側の出口にダンパを設置し除霜運転時に閉じることにより、冷却器及びその周囲にある除霜ヒータの熱を冷凍温度帯よりも温度の高い貯蔵室へ伝えないことを目的とするものである。   The present invention has been made to solve the above-described problems, and a damper is provided at the outlet on the cooler side of the return air passage from a storage room (for example, a refrigerator room or a vegetable room) having a temperature higher than the freezing temperature zone. The purpose of this is to prevent the heat of the cooler and the defrost heater around it from being transferred to the storage room having a temperature higher than the refrigeration temperature zone by closing and during the defrosting operation.

本発明に係る冷凍冷蔵庫は、冷凍冷蔵庫本体と、前記冷凍冷蔵庫本体が断熱壁により区切られて構成され、冷凍温度帯よりも高い温度に保持される冷蔵貯蔵室を含む異なる２以上の温度帯に保持される複数の貯蔵室と、冷却器と、前記冷却器によって冷却された冷気を前記貯蔵室へ送る冷却器ファンと、前記冷却器の下に設けられた除霜ヒータと、前記冷蔵貯蔵室から前記冷却器へ冷気を送る冷蔵貯蔵室戻り風路と、前記冷蔵貯蔵室戻り風路の前記冷却器側の出口に設置された戻り風路ダンパと、前記貯蔵室のうち冷凍温度帯に保持される冷凍室から前記冷却器へ冷気を送る冷凍室戻り風路と、を備え、前記除霜ヒータは、前記戻り風路ダンパが閉じた状態で熱せられ、前記冷凍室戻り風路の前記冷却器側の出口上端は、前記除霜ヒータの下端より下に位置する。 The refrigerator-freezer according to the present invention is composed of a refrigerator-freezer main body and the refrigerator-freezer main body separated by a heat insulating wall, and in two or more different temperature zones including a refrigerated storage room that is maintained at a temperature higher than the freezing temperature zone. A plurality of storage chambers to be held, a cooler, a cooler fan for sending cool air cooled by the cooler to the storage chamber, a defrost heater provided under the cooler, and the refrigerated storage chamber Refrigerated storage room return air path for sending cold air from the refrigerator to the cooler, return air path damper installed at the cooler side outlet of the refrigerated storage room return air path, and kept in the freezing temperature zone of the storage room A freezer compartment return air passage that sends cold air from the freezer compartment to the cooler, and the defrost heater is heated with the return air passage damper closed, and the cooling of the freezer compartment return air passage is performed The upper end of the outlet on the unit side is under the defrost heater More located below.

本発明によれば、冷凍温度帯よりも高い温度の貯蔵室（例えば冷蔵室、野菜室）の戻り風路の冷却器側の出口に戻り風路ダンパを設置することにより、冷凍温度帯よりも高い温度の貯蔵室からの戻り風路の出口下端が、除霜ヒータが設置されている位置と同じ高さ、又は高い位置にあっても、冷却器及び除霜ヒータの熱が貯蔵室へ伝わることを防ぐことができ、除霜ヒータの熱により効率的に冷却器を暖めることができる。   According to the present invention, the return air path damper is installed at the outlet on the cooler side of the return air path of the storage room (for example, the refrigeration room, the vegetable room) having a temperature higher than the freezing temperature range. Even if the exit lower end of the return air passage from the high temperature storage room is at the same height as or higher than the position where the defrost heater is installed, the heat of the cooler and the defrost heater is transmitted to the storage room. This can be prevented, and the cooler can be efficiently warmed by the heat of the defrosting heater.

本発明の実施の形態１における冷凍冷蔵庫の正面図である。It is a front view of the refrigerator-freezer in Embodiment 1 of this invention. 図１におけるＡ−Ａ断面を示す図である。It is a figure which shows the AA cross section in FIG. 図１におけるＢ−Ｂ断面を示す図である。It is a figure which shows the BB cross section in FIG. 本発明の実施形態１における冷凍冷蔵庫の冷凍室を冷凍冷蔵庫正面側から見た図である。It is the figure which looked at the freezer compartment of the refrigerator-freezer in Embodiment 1 of the present invention from the refrigerator-freezer front side. 戻り風路ダンパ扉の動作図である。It is an operation | movement figure of a return air path damper door.

実施の形態１．
以下に、図を用いて本実施の形態に係る冷凍冷蔵庫について説明をする。
以下の説明中の「上」「下」「左」「右」は、図１に示される冷凍冷蔵庫正面から見た時の「上」「下」「左」「右」を意味し、「前」は内部に貯蔵部を有する冷凍冷蔵庫本体の開口側、「後」は冷凍冷蔵庫の背面側を意味する。 Embodiment 1 FIG.
Hereinafter, the refrigerator-freezer according to the present embodiment will be described with reference to the drawings.
In the following description, “up”, “down”, “left”, and “right” mean “up”, “down”, “left”, and “right” when viewed from the front of the refrigerator shown in FIG. "" Means the opening side of the refrigerator-freezer main body having a storage part inside, and "after" means the back side of the refrigerator-freezer.

図１は、本発明の実施の形態１における冷凍冷蔵庫の正面図である。
本実施の形態に係る冷凍冷蔵庫は、冷凍冷蔵庫本体１を有し、冷凍冷蔵庫本体の内側は食料品等を貯蔵する複数の貯蔵室となっており、断熱機能を持った仕切りにより区切られている。各貯蔵室は、前面側を断熱機能を有する扉により閉塞され、各貯蔵室は冷凍冷蔵庫外部と断熱されている。FIG. 1 is a front view of the refrigerator-freezer according to Embodiment 1 of the present invention.
The refrigerator-freezer according to the present embodiment has a refrigerator-freezer main body 1, and the inside of the refrigerator-freezer main body is a plurality of storage rooms for storing foods and the like, and is partitioned by a partition having a heat insulating function. . Each storage chamber is closed on the front side by a door having a heat insulating function, and each storage chamber is thermally insulated from the outside of the refrigerator-freezer.

食料品等を保存する冷蔵室２は、冷凍冷蔵庫本体１の上部に位置する。冷蔵室２の前面は、冷蔵室扉１９により閉塞されている。冷蔵室扉１９の左側の端部には冷蔵室扉把手３１が設置されており、ユーザーはこの冷蔵室扉把手３１を把持して冷蔵室扉１９の開閉を行う。   The refrigerator compartment 2 for storing foods and the like is located in the upper part of the refrigerator-freezer main body 1. The front surface of the refrigerator compartment 2 is closed by a refrigerator compartment door 19. A refrigerator compartment door handle 31 is installed at the left end of the refrigerator compartment door 19, and the user holds the refrigerator compartment door handle 31 to open and close the refrigerator compartment door 19.

野菜室３は、冷蔵室２の下部に位置し、冷蔵室２より温度が高く維持されている。野菜室３の前面は、野菜室扉２０により閉塞されている。野菜室扉２０は、その上端に野菜室扉把手３２が設置されており、野菜室扉把手３２を把持して開閉される。冷凍室４は、野菜室３の下部に位置する。冷凍室４の前面は、冷凍室扉２１により閉塞されている。冷凍室扉２１は、上端に冷凍室扉把手３３が設置されており、冷凍室扉把手３３を把持して開閉される。   The vegetable room 3 is located at the lower part of the refrigerator compartment 2 and is maintained at a higher temperature than the refrigerator compartment 2. The front of the vegetable compartment 3 is closed by the vegetable compartment door 20. The vegetable compartment door 20 is provided with a vegetable compartment door handle 32 at the upper end thereof, and is opened and closed by grasping the vegetable compartment door handle 32. The freezer compartment 4 is located below the vegetable compartment 3. The front surface of the freezer compartment 4 is closed by a freezer compartment door 21. The freezer compartment door 21 is provided with a freezer compartment door handle 33 at the upper end, and is opened and closed by gripping the freezer compartment door handle 33.

なお、本実施の形態に係る冷凍冷蔵庫は、冷蔵室２及び野菜室３、冷凍室４の３つの貯蔵室を持ち、３つの温度帯を保つことができるが、例えば、冷蔵室２よりも低くかつ冷凍室４よりも高い温度帯を保つチルド室等をさらに備えていても良い。また、貯蔵室を２つとし、２つの温度帯（冷蔵室２と冷凍室４）の貯蔵室から構成されていても良い。
さらには、本実施の形態に係る冷凍冷蔵庫は、例えば、製氷室、温度帯の切り替えができる切り替え室などを備えていても良い。
冷蔵室２及び野菜室３、チルド室といった冷凍温度帯よりも高い温度の貯蔵室が、本発明における冷蔵貯蔵室に相当する。Note that the refrigerator-freezer according to the present embodiment has three storage rooms of the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4 and can maintain three temperature zones. For example, it is lower than the refrigerator compartment 2 In addition, a chilled chamber or the like that maintains a temperature range higher than that of the freezing chamber 4 may be further provided. Moreover, it may be comprised from the storage room of two temperature zones (refrigeration room 2 and freezer compartment 4), having two storage rooms.
Furthermore, the refrigerator-freezer according to the present embodiment may include, for example, an ice making chamber, a switching chamber that can switch a temperature zone, and the like.
A storage room having a temperature higher than the freezing temperature zone such as the refrigerator room 2, the vegetable room 3, and the chilled room corresponds to the refrigerator room in the present invention.

図２は図１におけるＡ−Ａ断面を示す図であり、冷蔵室、野菜室の風路構成を示す図である。
冷凍室４の後ろ側には、冷却器５と、冷却ファン６と、除霜ヒータ１６とが設置されている。冷却ファン６は、冷却器５の上部に位置し、冷却器５により冷却された冷気を各貯蔵室へ送っている。除霜ヒータ１６は、冷却器５よりも下側に位置し、除霜時には除霜ヒータより上側にある冷却器５を加熱する。
冷却器５から冷蔵室２へ連通する冷蔵室冷気送風路７は、冷凍冷蔵庫本体１の後側の面に沿って上方に向かって伸びている。冷蔵室冷気送風路７は、冷蔵室２内の最上部まで伸び、冷気が吐出されるように開口されている。また、冷蔵室２内には、高さ方向に複数の層に仕切り、食料品等を載置できる冷蔵室棚４０ａ−４０ｃが設置されている。冷蔵室棚４０ａ−４０ｃは、例えば、樹脂製又はガラス製である。冷蔵室棚４０ａ−４０ｃにより仕切られた各層が同じように冷却されるように、冷蔵室冷気送風路７の開口４１ａ−４１ｃが設けられている。開口４１ａは、冷蔵室棚４０ａよりも上部に設けられ、開口４１ｂは、冷蔵室棚４０ａと冷蔵室棚４０ｂとの間に設けられ、開口４１ｃは、冷蔵室棚４０ｂと冷蔵室棚４０ｃとの間に設けられている。図中の矢印２３は、冷却器から冷蔵室への冷気の流れを示している。また、図中の矢印２４は、冷蔵室２内の冷気の流れを示している。なお冷蔵室冷気送風路７は、本発明の送風路に相当する。FIG. 2 is a view showing a cross section taken along the line AA in FIG.
On the back side of the freezer compartment 4, a cooler 5, a cooling fan 6, and a defrost heater 16 are installed. The cooling fan 6 is located in the upper part of the cooler 5 and sends cold air cooled by the cooler 5 to each storage room. The defrost heater 16 is located below the cooler 5 and heats the cooler 5 located above the defrost heater during defrosting.
The refrigeration room cold air blowing path 7 communicating from the cooler 5 to the refrigeration room 2 extends upward along the rear surface of the refrigerator-freezer body 1. The refrigerating room cool air blowing path 7 extends to the top of the refrigerating room 2 and is opened so that the cold air is discharged. In the refrigerator compartment 2, refrigerator compartment shelves 40a to 40c that are partitioned into a plurality of layers in the height direction and on which food items and the like can be placed are installed. The refrigerator compartment shelves 40a-40c are, for example, made of resin or glass. The openings 41a-41c of the refrigerator compartment cool air blowing path 7 are provided so that the layers partitioned by the refrigerator compartment shelves 40a-40c are similarly cooled. The opening 41a is provided above the refrigerator compartment shelf 40a, the opening 41b is provided between the refrigerator compartment shelf 40a and the refrigerator compartment shelf 40b, and the opening 41c is formed between the refrigerator compartment shelf 40b and the refrigerator compartment shelf 40c. It is provided in between. The arrow 23 in the figure indicates the flow of cold air from the cooler to the refrigerator compartment. Moreover, the arrow 24 in the figure indicates the flow of cold air in the refrigerator compartment 2. In addition, the refrigerator compartment cool air ventilation path 7 is corresponded to the ventilation path of this invention.

冷蔵室冷気送風路７内には送風ダンパ１２が設置されている。送風ダンパ１２は、上記の開口４１ａ−４１ｃよりも冷気の流れの上流側（冷却器５側）に設置されている。送風ダンパ１２は、開閉制御が可能となっている。送風ダンパ１２の開閉により、冷却器５から冷蔵室冷気送風路７を通り冷蔵室２内に供給される冷気の量を調整し、冷蔵室２及び野菜室３の温度を調整する。つまり、冷蔵室２及び野菜室３の温度が一定値よりも下がると送風ダンパ１２を閉じ、冷気を送らないようにする。これにより、冷却器５により冷却された冷気を効率的に使用することができ、ひいては冷凍冷蔵庫の消費電力も抑制できる。   A blower damper 12 is installed in the refrigerator compartment cool air blowing path 7. The blower damper 12 is installed on the upstream side (cooler 5 side) of the cool air flow from the openings 41a-41c. The blower damper 12 can be opened and closed. By opening and closing the blower damper 12, the amount of cold air supplied from the cooler 5 through the refrigerating room cold air blowing path 7 into the refrigerating room 2 is adjusted, and the temperatures of the refrigerating room 2 and the vegetable room 3 are adjusted. That is, when the temperature of the refrigerator compartment 2 and the vegetable compartment 3 falls below a certain value, the blower damper 12 is closed so as not to send cold air. Thereby, the cold air cooled with the cooler 5 can be used efficiently, and the power consumption of a refrigerator-freezer can also be suppressed by extension.

冷蔵室２内の下部には野菜室３へ連通している野菜室冷気送風路８が設けられている。冷蔵室２内を下ってきた冷気は、野菜室冷気送風路８から野菜室３内に流れ込む。図中の矢印２５は、野菜室内の冷気の流れをしている。野菜室３の後ろ側の下部には、野菜室３から冷却器５へ冷気を送る野菜室からの戻り風路１０が設置されている。野菜室からの戻り風路１０は、本発明の冷蔵貯蔵室戻り風路に相当するものである。野菜室からの戻り風路１０は、冷凍室４の後ろ側の面を通り、その野菜室からの戻り風路の出口下端１４は、除霜ヒータ１６の下端と同じ高さ、または除霜ヒータ１６の下端より高い位置に配置されている。図中の矢印２６は、野菜室から冷却器への冷気の流れを示している。野菜室からの戻り風路１０の冷却器５側出口には、戻り風路ダンパ１３が設置されている。戻り風路ダンパ１３は、開閉制御が可能となっている。戻り風路ダンパ１３の開閉により、野菜室３から冷却器５へ戻る冷気の量を調整し、冷蔵室２及び野菜室３の温度を調整する。つまり、冷蔵室２及び野菜室３の温度が一定値よりも下がると戻り風路ダンパ１３を閉じ、冷却器５により冷却した冷気が野菜室からの戻り風路１０を伝わり野菜室３側に逃げないようにする。これにより、冷却器５により冷却された冷気を効率的に使用することができ、ひいては冷凍冷蔵庫の消費電力も抑制できる。   In the lower part of the refrigerator compartment 2, a vegetable compartment cold air passage 8 communicating with the vegetable compartment 3 is provided. The cold air that has come down in the refrigerator compartment 2 flows into the vegetable compartment 3 from the vegetable compartment cold air blowing path 8. The arrow 25 in the figure is a flow of cold air in the vegetable compartment. In the lower part of the rear side of the vegetable room 3, a return air passage 10 from the vegetable room for sending cold air from the vegetable room 3 to the cooler 5 is installed. The return air path 10 from the vegetable room corresponds to the return air path of the refrigerated storage room of the present invention. The return air passage 10 from the vegetable compartment passes through the rear side surface of the freezer compartment 4, and the exit lower end 14 of the return air passage from the vegetable compartment is the same height as the lower end of the defrost heater 16 or the defrost heater. It is arranged at a position higher than the lower end of 16. The arrow 26 in the figure indicates the flow of cold air from the vegetable compartment to the cooler. A return air path damper 13 is installed at the cooler 5 side exit of the return air path 10 from the vegetable compartment. The return air path damper 13 can be opened and closed. By opening and closing the return air path damper 13, the amount of cold air returning from the vegetable compartment 3 to the cooler 5 is adjusted, and the temperatures of the refrigerator compartment 2 and the vegetable compartment 3 are adjusted. That is, when the temperature of the refrigerator compartment 2 and the vegetable compartment 3 falls below a certain value, the return air path damper 13 is closed, and the cold air cooled by the cooler 5 travels along the return air path 10 from the vegetable compartment and escapes to the vegetable compartment 3 side. Do not. Thereby, the cold air cooled with the cooler 5 can be used efficiently, and the power consumption of a refrigerator-freezer can also be suppressed by extension.

なお、本実施の形態においては、冷蔵室２の下部が野菜室３へ連通しているが、例えば、冷蔵室冷気送風路７と同様に、直接冷却器５から野菜室３へ接続し、冷気を野菜室３へ供給する野菜室冷気送風路（図示無し）を備えていても良い。その場合は、野菜室冷気送風路に野菜室送風路ダンパを備え、開閉制御し野菜室３へ送る冷気の量を調整し、野菜室３の温度調整を行う。また、冷蔵室２から冷却器５へ直接接続し、冷蔵室２の冷気を冷却器５へ戻す冷蔵室戻り風路（図示無し）を備えていても良く、この場合は、野菜室からの戻り風路１０と同じく、冷蔵室戻り風路の冷却器５側の出口に冷蔵室戻り風路ダンパ（図示無し）を備える。冷蔵室戻り風路ダンパの開閉により、冷蔵室２から冷却器５へ戻る冷気の量を調整し、冷蔵室２の温度を調整することになる。ただし、これらの構成を取った場合には、冷却器５と各貯蔵室とを接続する風路に設置するダンパの数が増えるため、コストの抑制及び貯蔵室のスペース確保のためには本実施の形態に係る冷凍冷蔵庫の方が有利である。   In the present embodiment, the lower part of the refrigerator compartment 2 communicates with the vegetable compartment 3. For example, as with the refrigerator compartment cold air blow path 7, the cooler 5 is directly connected to the vegetable compartment 3 to There may be provided a vegetable room cold air supply passage (not shown) for supplying the vegetable room 3 to the vegetable room 3. In that case, the vegetable room air cooler is provided with a vegetable room air duct damper, the opening and closing control is performed, the amount of cool air sent to the vegetable room 3 is adjusted, and the temperature of the vegetable room 3 is adjusted. Moreover, you may provide the refrigerator compartment return air path (not shown) which connects directly to the cooler 5 from the refrigerator compartment 2, and returns the cool air of the refrigerator compartment 2 to the refrigerator 5, In this case, the return from the vegetable compartment As with the air passage 10, a refrigerator return air passage damper (not shown) is provided at the outlet of the refrigerator return air passage on the cooler 5 side. The amount of cool air returning from the refrigerator compartment 2 to the cooler 5 is adjusted by opening and closing the refrigerator return air duct damper, and the temperature of the refrigerator compartment 2 is adjusted. However, when these configurations are adopted, the number of dampers installed in the air path connecting the cooler 5 and each storage room increases, so this is carried out to reduce costs and secure storage room space. The refrigerator-freezer according to the embodiment is more advantageous.

また、本実施の形態においては、冷凍冷蔵庫の上部から、冷蔵室２、野菜室３、冷凍室４の順に配置されているが、配置の順番はこれだけに限定されない。ただし、例えば、冷凍冷蔵庫の上部から冷蔵室２、冷凍室４、野菜室３という順に配置されていた場合、冷蔵室２と野菜室３とを連通する風路を設ける必要があるため、貯蔵スペース確保のためには本実施の形態に係る冷凍冷蔵庫の方が有利である。   Moreover, in this Embodiment, although it has arrange | positioned in order of the refrigerator compartment 2, the vegetable compartment 3, and the freezer compartment 4 from the upper part of a refrigerator-freezer, the order of arrangement | positioning is not limited only to this. However, for example, when the refrigerator compartment 2, the freezer compartment 4, and the vegetable compartment 3 are arranged in this order from the top of the refrigerator-freezer, it is necessary to provide an air passage that connects the refrigerator compartment 2 and the vegetable compartment 3. For securing, the refrigerator-freezer according to the present embodiment is more advantageous.

図３は図１におけるＢ−Ｂ断面図を示す図であり、冷凍室４の風路構成を示す図である。
冷却器５は、冷凍室４の後ろ側の空間に配置されている。冷凍室４の上部の後ろ側の面には、冷凍室への冷気送風路９が設けられている。これにより冷却器５から冷凍室４へ冷気が送られる。冷凍室４の下部の後ろ側の面には、冷凍室４から冷却器５へ冷気を送る冷凍室からの戻り風路１１が設けられている。冷凍室からの戻り風路１１の冷却器５側の出口は、ダンパは設けられておらず、常に開放状態になっている。冷凍室４内に示す矢印２７は、冷凍室４内の冷気の流れを示している。冷凍室４から冷却器５への出口上端１５は、除霜ヒータ１６よりも下側に位置するように配置されている。3 is a diagram showing a cross-sectional view taken along the line BB in FIG.
The cooler 5 is disposed in a space behind the freezer compartment 4. On the rear side surface of the upper part of the freezer compartment 4, a cold air blowing path 9 to the freezer compartment is provided. Thereby, cold air is sent from the cooler 5 to the freezer compartment 4. A return air passage 11 from the freezer compartment that sends cold air from the freezer compartment 4 to the cooler 5 is provided on the lower rear surface of the freezer compartment 4. The exit on the cooler 5 side of the return air passage 11 from the freezer compartment is not provided with a damper and is always open. An arrow 27 shown in the freezer compartment 4 indicates the flow of cold air in the freezer compartment 4. An outlet upper end 15 from the freezer compartment 4 to the cooler 5 is disposed below the defrost heater 16.

除霜ヒータ１６の下部には、除霜により冷却器５から落ちてきた水滴を受け止めるドリップトレイ１７が配置されている。ドリップトレイ１７の下部の断熱壁を隔てたスペースに圧縮機１８が配置されている。圧縮機１８は、凝縮器（図示無し）と、減圧器（図示無し）と、冷却器５（蒸発器）と冷媒回路で接続され、貯蔵室内を冷却する冷凍サイクルを構成している。   A drip tray 17 that receives water droplets that have fallen from the cooler 5 due to defrosting is disposed below the defrosting heater 16. A compressor 18 is disposed in a space across the heat insulating wall below the drip tray 17. The compressor 18 is connected to a condenser (not shown), a decompressor (not shown), a cooler 5 (evaporator), and a refrigerant circuit to constitute a refrigeration cycle for cooling the storage chamber.

（冷却運転時の冷凍冷蔵庫及び冷凍冷蔵庫内の冷気の動き）
冷凍冷蔵庫の運転には、冷却運転と除霜運転の２種類が存在する。
ここでは冷却運転時の冷凍冷蔵庫及び冷凍冷蔵庫内の冷気の動きについて説明する。
冷却器５により冷却された冷気は、冷却ファン６により冷蔵室冷気送風路７内へ送り込まれる。冷蔵室冷気送風路７内に設置されている送風ダンパ１２は、開閉可能に制御されており、冷蔵室２及び野菜室３の温度に応じて開閉される。送風ダンパ１２が開けられている時は、冷気は図２に示されている矢印２３のように流れる。冷気は、冷蔵室冷気送風路７に設けられた開口４１ａ−４１ｃから冷蔵室２内へ流入し、図２の矢印２４に示すように冷蔵室２内を流れ、冷却する。(Refrigerating refrigerator during cooling operation and movement of cold air in the refrigerator)
There are two types of operation of the refrigerator-freezer: a cooling operation and a defrosting operation.
Here, the movement of the cold air in the refrigerator-freezer and the refrigerator-freezer during the cooling operation will be described.
The cold air cooled by the cooler 5 is sent into the cold room air blow path 7 by the cooling fan 6. The blower damper 12 installed in the refrigerating room cool air blowing path 7 is controlled to be openable and closable, and is opened and closed according to the temperatures of the refrigerating room 2 and the vegetable room 3. When the blower damper 12 is opened, the cold air flows as shown by the arrow 23 shown in FIG. The cold air flows into the refrigerating chamber 2 from the openings 41a-41c provided in the refrigerating chamber cool air blowing path 7, flows through the refrigerating chamber 2 as shown by the arrow 24 in FIG.

冷蔵室２内を冷却した冷気は、冷蔵室２内を下り、冷蔵室２の下部の後ろ側に設けられている野菜室冷気送風路８へ流入する。野菜室冷気送風路８へ流入した冷気は、図２の矢印２５に示すように野菜室３内を循環し、野菜室３内を冷却する。野菜室３内を下った冷気は、野菜室からの戻り風路１０へ流入する。野菜室冷気送風路８の冷却器５側出口に設けられた戻り風路ダンパ１３は、開閉制御が可能となっており、開状態の時は冷気はここから冷却器５へと戻され再度冷却される。   The cold air that has cooled the inside of the refrigerating room 2 descends the refrigerating room 2 and flows into the vegetable room cold air blowing path 8 provided on the rear side of the lower part of the refrigerating room 2. The cold air that has flowed into the vegetable room cold air passage 8 circulates in the vegetable room 3 as shown by the arrow 25 in FIG. The cold air that has descended in the vegetable compartment 3 flows into the return air passage 10 from the vegetable compartment. The return air path damper 13 provided at the outlet of the cooler 5 side of the vegetable room cool air blower path 8 can be controlled to open and close, and when open, the cool air is returned from here to the cooler 5 and cooled again. Is done.

（除霜運転時の冷凍冷蔵庫及び冷凍冷蔵庫内の空気の動き）
除霜運転時の冷凍冷蔵庫内の冷気の動きについて説明する。
除霜運転時には、まず、冷凍サイクルを構成する圧縮機１８の運転が停止され、冷却器５による冷気の冷却を停止する。その後、送風ダンパ１２及び戻り風路ダンパ１３は閉じられる。冷却ファン６の運転も停止される。そして、除霜ヒータ１６が熱せられ、除霜ヒータ１６周辺の空気が加熱される。加熱された空気は、冷却器５に付着した霜を加熱し融かす。霜が融けてできた水滴は、冷却器５の真下方向に設置されているドリップトレイ１７に落ちる。
除霜運転終了後には送風ダンパ１２及び戻り風路ダンパ１３は開き、圧縮機１８の運転も再開される。(Air movement in the refrigerator and refrigerator during defrosting)
The movement of the cold air in the refrigerator-freezer during the defrosting operation will be described.
During the defrosting operation, first, the operation of the compressor 18 constituting the refrigeration cycle is stopped, and the cooling of the cool air by the cooler 5 is stopped. Thereafter, the blower damper 12 and the return air path damper 13 are closed. The operation of the cooling fan 6 is also stopped. And the defrost heater 16 is heated and the air around the defrost heater 16 is heated. The heated air heats and melts the frost adhering to the cooler 5. The water droplets formed by melting of the frost fall on the drip tray 17 installed directly below the cooler 5.
After completion of the defrosting operation, the blower damper 12 and the return air path damper 13 are opened, and the operation of the compressor 18 is also resumed.

野菜室からの戻り風路１０に戻り風路ダンパ１３が設置されているため、野菜室からの戻り風路の出口下端１４が除霜ヒータ１６と同じ高さまたは高い位置にあっても、除霜運転時に除霜ヒータ１６により熱せられた空気が、野菜室３へ流れ込むことを防ぐことができる。これにより、除霜ヒータ１６の熱が野菜室からの戻り風路１０へ伝わることなく、除霜ヒータ１６の熱は効率的に冷却器５の除霜に使われる。   Since the return air path damper 13 is installed in the return air path 10 from the vegetable room, even if the exit lower end 14 of the return air path from the vegetable room is at the same height or higher position as the defrosting heater 16, it is removed. Air heated by the defrost heater 16 during the frost operation can be prevented from flowing into the vegetable compartment 3. Thereby, the heat of the defrost heater 16 is efficiently used for defrosting the cooler 5 without the heat of the defrost heater 16 being transmitted to the return air passage 10 from the vegetable compartment.

また、送風ダンパ１２が閉じられることにより、除霜ヒータ１６により熱せられた冷気が冷蔵室冷気送風路７を伝わって冷蔵室２へ流入することがないため、除霜ヒータ１６の熱が冷蔵室２及び野菜室３へ伝わりにくくなっている。このように、除霜ヒータ１６の熱が冷却器５へ向けられる構造となっているため除霜時間短縮が可能となる。   In addition, since the cool air heated by the defrost heater 16 does not flow into the refrigerating room cool air blow path 7 and flows into the refrigerating room 2 by closing the blower damper 12, the heat of the defrost heater 16 is refrigerated. 2 and the vegetable room 3 are difficult to reach. As described above, since the heat of the defrost heater 16 is directed to the cooler 5, the defrost time can be shortened.

冷凍室４から冷却器５への出口上端１５が除霜ヒータ１６より低い位置に配置されていることで、除霜時に除霜ヒータ１６により熱せられた空気が自然対流により冷凍室からの戻り風路１１に流れ込むのを防ぐ。これにより、熱が冷凍室４へ逃げることなく、効率的に冷却器５に付着した霜を溶かすことができる。
また、冷凍室からの戻り風路１１の出口を上記のように配置することで、冷凍室からの戻り風路１１に戻り風路ダンパを設置する必要がなくなるため、コストを抑えることができ、貯蔵スペースの縮小も抑えることができる。Since the outlet upper end 15 from the freezer compartment 4 to the cooler 5 is disposed at a position lower than the defrost heater 16, the air heated by the defrost heater 16 at the time of defrosting is returned from the freezer compartment by natural convection. Prevents flow into path 11. Thereby, the frost adhering to the cooler 5 can be melted efficiently without the heat escaping to the freezer compartment 4.
Further, by arranging the exit of the return air passage 11 from the freezer as described above, it is not necessary to install a return air damper in the return air passage 11 from the freezer compartment, so that the cost can be suppressed, Reduction of storage space can also be suppressed.

図４は、本発明の実施形態１における冷凍冷蔵庫の冷凍室４を冷凍冷蔵庫正面側から見た図である。冷却器５及び除霜ヒータ１６、冷凍室からの戻り風路１１、野菜室からの戻り風路１０の位置関係を表している。
冷凍室４の後ろ側に冷却器５が配置されている。野菜室からの戻り風路１０は、冷凍室４の後ろ側に配置されており、冷凍室４との間には断熱壁がある。野菜室からの戻り風路１０には、冷却器５へ冷気を戻すための出口設置されている。野菜室からの戻り風路の出口下端１４は、冷却器５の下側に設置されている除霜ヒータ１６と同じ高さに出口が設けられている。野菜室からの戻り風路の出口には野菜室からの戻り風路ダンパ１３が設置されている。除霜ヒータ１６より下部には、冷凍室４から冷却器５への風路の出口が設置され、冷凍室４から冷却器５へ冷気を戻している。矢印２８は、冷凍室４から冷却器５へ戻る冷気の流れを示している。冷凍室４から冷却器５への出口上端１５は、除霜ヒータ１６よりも低い位置になるように設置されている。FIG. 4 is a view of the freezer compartment 4 of the refrigerator-freezer according to Embodiment 1 of the present invention as viewed from the front side of the refrigerator-freezer. The positional relationship of the cooler 5, the defrost heater 16, the return air path 11 from the freezer compartment, and the return air path 10 from the vegetable compartment is shown.
A cooler 5 is disposed behind the freezer compartment 4. The return air passage 10 from the vegetable compartment is disposed behind the freezer compartment 4, and there is a heat insulating wall between the freezer compartment 4. An outlet for returning cool air to the cooler 5 is installed in the return air passage 10 from the vegetable room. The outlet lower end 14 of the return air passage from the vegetable compartment has an outlet at the same height as the defrost heater 16 installed on the lower side of the cooler 5. A return air path damper 13 from the vegetable room is installed at the exit of the return air path from the vegetable room. Below the defrost heater 16, an outlet of the air path from the freezer compartment 4 to the cooler 5 is installed, and the cool air is returned from the freezer compartment 4 to the cooler 5. An arrow 28 indicates the flow of cool air returning from the freezer compartment 4 to the cooler 5. The exit upper end 15 from the freezer compartment 4 to the cooler 5 is installed at a position lower than the defrost heater 16.

野菜室からの戻り風路ダンパ１３は、野菜室からの戻り風路１０の冷却器５側の出口に設置しているため、冷却器５により冷却され氷結する可能性がある。それは、湿度の高い野菜室３の冷気が、冷却器５に近く、温度の低い戻り風路ダンパ１３にて結露してしまい、その結露による水滴が氷結するためである。これにより戻り風路ダンパ１３の扉が開閉動作ができなくなる可能性があった。
しかし、戻り風路ダンパ１３が氷結したとしても、戻り風路ダンパ１３は、除霜ヒータ１６の下端と同じ高さまたは高い位置に配置されているため、除霜運転時には除霜ヒータ１６の熱せられた空気が自然対流により戻り風路ダンパ周辺へ移動し、氷結箇所が溶ける。これにより戻り風路ダンパ１３は、再び開閉動作をすることが可能となる。Since the return air path damper 13 from the vegetable room is installed at the outlet of the return air path 10 from the vegetable room on the cooler 5 side, it may be cooled by the cooler 5 and freeze. This is because the cold air in the vegetable room 3 with high humidity is condensed near the cooler 5 and the return air path damper 13 with a low temperature, and water droplets due to the condensation are frozen. As a result, there is a possibility that the door of the return air path damper 13 cannot be opened and closed.
However, even if the return air path damper 13 freezes, the return air path damper 13 is disposed at the same height or higher position as the lower end of the defrost heater 16, so that the defrost heater 16 is heated during the defrost operation. The generated air moves to the vicinity of the return air damper by natural convection, and the frozen part melts. As a result, the return air path damper 13 can be opened and closed again.

なお、野菜室からの戻り風路の出口下端１４は、除霜ヒータ１６よりも高い位置に設置されていても良い。ただし、野菜室からの戻り風路の出口は、冷却器５の下端よりも低い位置（除霜ヒータ１６に近い側）に設置されていることが望ましい。例えば、野菜室からの戻り風路の出口が、冷却器５と同じ高さに設置されている場合、通常運転時には冷却器５により戻り風路ダンパ１３が氷結しやすくなり、除霜運転時には除霜ヒータ１６からの距離が離れるため、戻り風路ダンパ１３の氷結を融かすのに時間がかかるためである。そのため、除霜運転時の除霜の効率をより良くするためには、本実施の形態に係る冷凍冷蔵庫の方が有利である。   In addition, the exit lower end 14 of the return air path from the vegetable compartment may be installed at a position higher than the defrost heater 16. However, it is desirable that the exit of the return air passage from the vegetable compartment is installed at a position lower than the lower end of the cooler 5 (side closer to the defrost heater 16). For example, when the exit of the return air passage from the vegetable room is installed at the same height as the cooler 5, the return air passage damper 13 is easily frozen by the cooler 5 during normal operation, and is removed during the defrosting operation. This is because it takes time to melt the freezing of the return air path damper 13 because the distance from the frost heater 16 is increased. Therefore, in order to improve the efficiency of defrosting during the defrosting operation, the refrigerator-freezer according to the present embodiment is more advantageous.

図５は、戻り風路ダンパ扉の動作図である。
野菜室からの戻り風路１０の冷却器５側の出口には戻り風路ダンパ１３が設置されている。戻り風路ダンパ１３の扉２２は、開閉が可能となっている。扉２２が閉じられている時は、図５に示すように、扉２２ａは、野菜室からの戻り風路１０に対し垂直になって戻り風路ダンパ外枠２９の内側に収まり、野菜室３から冷却器５への冷気の流れ２６を遮断している。同時に冷却器５及び除霜ヒータ１６側の空気が野菜室３側に流れないように遮断している。野菜室からの戻り風路１０の冷却器５側の出口の上部には、戻り風路ダンパ基板部外枠３０が設置されている。
また、戻り風路ダンパ１３の扉２２が開いているときは、図５に示す扉２２ｂのように、水平以外の角度に保持された状態で、野菜室３から冷却器５への冷気の流れ２６を冷却器５側へ通すことが可能になっている。FIG. 5 is an operation diagram of the return air path damper door.
A return air path damper 13 is installed at the outlet of the return air path 10 from the vegetable compartment on the cooler 5 side. The door 22 of the return air path damper 13 can be opened and closed. When the door 22 is closed, as shown in FIG. 5, the door 22 a is perpendicular to the return air passage 10 from the vegetable compartment and fits inside the return air damper outer frame 29, and the vegetable compartment 3. To the cooler 5 is blocked. At the same time, the air on the cooler 5 and defrost heater 16 side is blocked so as not to flow to the vegetable compartment 3 side. A return air path damper substrate outer frame 30 is installed at the upper part of the outlet of the return air path 10 from the vegetable compartment on the cooler 5 side.
In addition, when the door 22 of the return air path damper 13 is open, the flow of cold air from the vegetable compartment 3 to the cooler 5 is maintained at an angle other than horizontal, as in the door 22b shown in FIG. 26 can be passed to the cooler 5 side.

このように、戻り風路ダンパの扉２２の開閉時の角度を水平以外とすることで、戻り風路ダンパの扉２２に水滴がついても、重力により水滴がドリップトレイ１７に落ちやすくなっている。水滴を扉２２から落ちやすくすることにより、扉２２が冷却器５に近く温度が低い場所に配置されているが、扉２２が氷結しにくい構造となっており、扉２２の開閉動作に支障が発生しにくい。   In this way, by setting the angle at the time of opening and closing the door 22 of the return air path damper to other than horizontal, even if water droplets are attached to the door 22 of the return air path damper, the water drops easily fall on the drip tray 17 due to gravity. . By making water drops easily fall from the door 22, the door 22 is arranged in a place where the temperature is close to the cooler 5 and the temperature is low. Hard to occur.

１ 冷凍冷蔵庫本体、２ 冷蔵室、３ 野菜室、４ 冷凍室、５ 冷却器、６ 冷却ファン、７ 冷蔵室冷気送風路、８ 野菜室冷気送風路、９ 冷凍室への冷気送風路、１０ 野菜室からの戻り風路、１１ 冷凍室からの戻り風路、１２ 送風ダンパ、１３ 戻り風路ダンパ、１４ 野菜室からの戻り風路の出口下端、１５ 冷凍室から冷却器への出口上端、１６ 除霜ヒータ、１７ ドリップトレイ、１８ 圧縮機、１９ 冷蔵室扉、２０ 野菜室扉、２１ 冷凍室扉、２２ 戻り風路ダンパ扉、２２a 戻り風路ダンパ扉、２２b 戻り風路ダンパ扉、２３ （冷却器から冷蔵室への冷気の流れを示す）矢印、２４ （冷蔵室の冷気の流れを示す）矢印、２５ （野菜室の冷気の流れを示す）矢印、２６ （野菜室から冷却器への冷気の流れを示す）矢印、２７ （冷凍室の冷気の流れを示す）矢印、２８ （冷凍室から冷却器への冷気の流れを示す）矢印、２９ 戻り風路ダンパ外枠、３０ 戻り風路ダンパ基板部外枠、３１ 冷蔵室扉把手、３２ 野菜室扉把手、３３ 冷凍室扉把手、４０ａ 冷蔵室棚、４０ｂ 冷蔵室棚、４０ｃ 冷蔵室棚、４１ａ 開口、４１ｂ 開口、４１ｃ 開口。   DESCRIPTION OF SYMBOLS 1 Refrigerator refrigerator body, 2 refrigerator compartment, 3 vegetable compartment, 4 freezer compartment, 5 cooler, 6 cooling fan, 7 refrigerator compartment cold air ventilation path, 8 vegetable room cold air ventilation path, 9 cold air ventilation path to freezer room, 10 vegetables Return air path from the room, 11 Return air path from the freezer room, 12 Blower damper, 13 Return air path damper, 14 Lower exit end of the return air path from the vegetable room, 15 Upper exit end from the freezer to the cooler, 16 Defrost heater, 17 drip tray, 18 compressor, 19 refrigerator door, 20 vegetable door, 21 freezer door, 22 return air damper door, 22a return air damper door, 22b return air damper door, 23 ( Arrow indicating the flow of cold air from the cooler to the refrigerator compartment, 24 Arrow indicating the flow of cold air in the refrigerator compartment, 25 Arrow indicating the flow of cold air in the vegetable compartment, 26 Arrow indicating the flow of cold air in the vegetable compartment Arrow indicating the flow of cold air, 2 7 (Shows the flow of cold air in the freezer compartment), 28 (Shows the flow of cold air from the freezer compartment to the cooler), 29, Return air damper outer frame, 30 Return air damper board outer frame, 31 Refrigeration Room door handle, 32 Vegetable room door handle, 33 Freezer room door handle, 40a Cold room shelf, 40b Cold room shelf, 40c Cold room shelf, 41a opening, 41b opening, 41c opening.

Claims (5)

冷凍冷蔵庫本体と、
前記冷凍冷蔵庫本体が断熱壁により区切られて構成され、冷凍温度帯よりも高い温度に保持される冷蔵貯蔵室を含む異なる２以上の温度帯に保持される複数の貯蔵室と、
冷却器と、
前記冷却器によって冷却された冷気を前記貯蔵室へ送る冷却器ファンと、
前記冷却器の下に設けられた除霜ヒータと、
前記冷蔵貯蔵室から前記冷却器へ冷気を送る冷蔵貯蔵室戻り風路と、
前記冷蔵貯蔵室戻り風路の前記冷却器側の出口に設置された戻り風路ダンパと、
前記貯蔵室のうち冷凍温度帯に保持される冷凍室から前記冷却器へ冷気を送る冷凍室戻り風路と、を備え、
前記除霜ヒータは、前記戻り風路ダンパが閉じた状態で熱せられ、
前記冷凍室戻り風路の前記冷却器側の出口上端は、
前記除霜ヒータの下端より下に位置する、冷凍冷蔵庫。 A refrigerator-freezer body,
A plurality of storage rooms held in two or more different temperature zones, including a refrigerated storage room configured to be separated by a heat insulating wall and held at a temperature higher than the freezing temperature zone;
A cooler,
A cooler fan for sending cool air cooled by the cooler to the storage room;
A defrost heater provided under the cooler;
A refrigerated storage room return air passage for sending cold air from the refrigerated storage room to the cooler;
A return air path damper installed at an outlet of the cooler side return air path on the cooler side;
A freezer compartment return air path for sending cold air from the freezer compartment held in the freezing temperature zone of the storage room to the cooler ,
The defrost heater is heated with the return air path damper closed,
The outlet upper end of the freezer return air path on the cooler side is:
The refrigerator-freezer located below the lower end of the defrost heater . 前記冷蔵貯蔵室戻り風路の出口下端は、
前記除霜ヒータの下端と同じ高さ、又は前記除霜ヒータの下端よりも高い位置に配置される、請求項１に記載の冷凍冷蔵庫。 The outlet lower end of the refrigerated storage room return air passage is
The refrigerator-freezer of Claim 1 arrange | positioned in the same height as the lower end of the said defrost heater, or a position higher than the lower end of the said defrost heater . 前記冷却器から前記冷蔵貯蔵室へ冷気を送る送風路と、
前記送風路内に設置された送風路ダンパと、を更に備え、
除霜運転時に、前記送風路ダンパ及び前記戻り風路ダンパが閉じられ、
前記冷却器ファンが停止する請求項１又は２に記載の冷凍冷蔵庫。 An air passage for sending cold air from the cooler to the refrigerated storage room;
An air duct damper installed in the air duct, and
During the defrosting operation, the air duct damper and the return air duct damper are closed,
The refrigerator-freezer according to claim 1, wherein the cooler fan is stopped. 前記戻り風路ダンパは、
前記戻り風路ダンパの扉を開けた時の扉停止位置を水平以外とする、請求項１から３の何れか１項に記載の冷凍冷蔵庫。 The return air path damper is
The refrigerator-freezer according to any one of claims 1 to 3, wherein a door stop position when the door of the return air path damper is opened is other than horizontal. 前記冷蔵貯蔵室は、
冷蔵室と、
前記冷蔵室よりも前記冷凍冷蔵庫本体の下部に配置され、前記冷蔵室より高い温度に保持される野菜室と、
前記冷蔵室と前記野菜室とを連通する風路と、を備え、
前記冷蔵貯蔵室戻り風路は、
前記野菜室と前記冷却器を接続する、請求項１から４の何れか１項に記載の冷凍冷蔵庫。 The refrigerated storage room is
A refrigerator room,
A vegetable room which is disposed at a lower part of the refrigerator-freezer body than the refrigerator room and is maintained at a higher temperature than the refrigerator room;
An air path communicating between the refrigerator compartment and the vegetable compartment,
The refrigerated storage room return air path is
The refrigerator-freezer of any one of Claim 1 to 4 which connects the said vegetable room and the said cooler.
JP2016574549A 2015-02-10 2015-02-10 Freezer refrigerator Expired - Fee Related JP6422513B2 (en)

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