JP2009036451A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
JP2009036451A
JP2009036451A JP2007201435A JP2007201435A JP2009036451A JP 2009036451 A JP2009036451 A JP 2009036451A JP 2007201435 A JP2007201435 A JP 2007201435A JP 2007201435 A JP2007201435 A JP 2007201435A JP 2009036451 A JP2009036451 A JP 2009036451A
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discharge port
duct
refrigerator
storage chamber
gas
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JP4945365B2 (en
Inventor
Ryoji Kawai
良二 河井
Akiyoshi Ohira
昭義 大平
Nobuaki Arakawa
展昭 荒川
Kazufumi Sasamura
和文 笹村
Hiroto Ishiwatari
寛人 石渡
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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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
    • 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
    • F25D2317/067—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 air ducts
    • F25D2317/0672—Outlet ducts

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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator superior in energy-saving performance, by reducing a heat loss. <P>SOLUTION: This refrigerator has a storage chamber formed in a thermal insulation box body, a cooling means for cooling gas of the storage chamber, an air blowing means for sending the gas cooled by the cooling means to the storage chamber, a duct for flowing the gas sent by the air blowing means, and a first delivery port arranged in the duct and blowing off the gas sent by the air blowing means to the storage chamber. An upper part of the first delivery port is a plane, and has a projection part arranged toward the inside of the duct in a lower part of the first delivery port. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は冷蔵庫に関する。   The present invention relates to a refrigerator.

近年の家電製品は、省エネ性に優れ、環境負荷を低減した製品が求められている。特に、冷蔵庫においては、熱損失を防止して、省エネ効果を向上させることが重要である。これらを実現するために、従来、特許文献１に開示されているように、冷蔵庫の貯蔵空間内における冷気流れの方向を転向させる技術がある。特許文献１の冷蔵庫では、庫内天井面に冷気流変更突起を設け、冷気逸流阻止壁を冷気流変更突起と近接して扉の上部裏に設けている。   In recent years, home appliances are required to have excellent energy saving and reduced environmental load. Particularly in the refrigerator, it is important to prevent heat loss and improve the energy saving effect. In order to realize these, there is a technology for turning the direction of the cool air flow in the storage space of the refrigerator as disclosed in Patent Document 1 conventionally. In the refrigerator of Patent Document 1, a cold airflow change protrusion is provided on the ceiling surface of the cabinet, and a cold air flow prevention wall is provided in the upper back of the door in the vicinity of the cold airflow change protrusion.

特開平９−２１０５３１号公報Japanese Patent Laid-Open No. 9-210531

特許文献１に記載の従来技術の冷蔵庫では、扉パッキンにあたる冷気を低減することで、扉パッキンを介して冷気が漏れることを防止して、冷却効率を向上させている。しかしながら、冷蔵室最上段の冷気吹出口から吹き出た冷気の流れは、冷蔵室天井面に向かって流れ、次いで扉ポケット部に流れ、最終的に棚上に流れる。すなわち、貯蔵空間に吐出された冷気は、貯蔵空間を循環して最後に棚上に載置している食品を冷却する順序になっている。この冷気流れでは、貯蔵した食品の冷却に関係がない冷蔵室天井面を、過剰に冷却してしまい、棚上の食品を十分冷却するまでにかかる時間が長期化するおそれがある。そのため、熱損失が大きくなり、エネルギ効率が低下してしまう。   In the refrigerator of the prior art described in Patent Document 1, the cooling air is prevented from leaking through the door packing by reducing the cooling air hitting the door packing, thereby improving the cooling efficiency. However, the flow of the cold air blown out from the cold air outlet at the uppermost stage of the refrigerator compartment flows toward the ceiling surface of the refrigerator compartment, then flows into the door pocket portion, and finally flows on the shelf. That is, the cool air discharged to the storage space is in the order of cooling the food that is finally laid on the shelf after circulating through the storage space. In this cold air flow, the ceiling surface of the refrigerator compartment that is not related to the cooling of the stored food is excessively cooled, and there is a possibility that the time taken to sufficiently cool the food on the shelf may be prolonged. As a result, heat loss increases and energy efficiency decreases.

本発明は、上記課題に鑑みてなされたものである。本発明の目的は、熱損失を低減させ、省エネ性に優れた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 problems. An object of the present invention is to provide a refrigerator that reduces heat loss and is excellent in energy saving.

上記目的を達成するために、本発明の冷蔵庫は、断熱箱体に形成された貯蔵室と、前記貯蔵室の気体を冷却する冷却手段と、前記冷却手段で冷却された気体を前記貯蔵室に送る送風手段と、前記送風手段で送られた気体が流れるダクトと、前記ダクトに設けられて、前記送風手段で送られた気体を前記貯蔵室に吹き出す第一の吐出口を有し、該第一の吐出口の上部は平面であって、該第一の吐出口の下部に前記ダクト内に向けて設けられた突部と、を備えたことを特徴とする。   In order to achieve the above object, a refrigerator according to the present invention includes a storage chamber formed in a heat insulating box, cooling means for cooling the gas in the storage chamber, and gas cooled by the cooling means in the storage chamber. A blowing means for sending, a duct through which the gas sent by the blowing means flows, a first discharge port provided in the duct for blowing the gas sent by the blowing means to the storage chamber, The upper portion of one discharge port is a flat surface, and a protrusion provided toward the inside of the duct is provided at the lower portion of the first discharge port.

また、断熱箱体内に形成された貯蔵室と、前記貯蔵室の気体を冷却する冷却手段と、前記冷却手段で冷却された気体を前記貯蔵室に送る送風手段と、前記送風手段で送られた気体が流れるダクトと、前記ダクトに設けられて、前記送風手段で送られた気体を前記貯蔵室に吹き出す第一の吐出口を有し、該第一の吐出口の上部及び下部には前記ダクト内に向けて突部が設けられており、前記上部の突部よりも前記下部の突部は長いことを特徴とする。   Further, the storage chamber formed in the heat insulation box, the cooling means for cooling the gas in the storage chamber, the blowing means for sending the gas cooled by the cooling means to the storage chamber, and sent by the blowing means A duct through which a gas flows, and a first discharge port provided in the duct for blowing the gas sent by the blower to the storage chamber, and the duct above and below the first discharge port A protrusion is provided inward, and the lower protrusion is longer than the upper protrusion.

また、前記ダクトは略鉛直方向に設けられていることを特徴とする。   The duct is provided in a substantially vertical direction.

また、前記第一の吐出口は冷蔵庫本体の正面からみて上下方向よりも左右方向に長いことを特徴とする。   Further, the first discharge port is longer in the left-right direction than in the up-down direction when viewed from the front of the refrigerator body.

また、前記突部は前記ダクト内に略水平に設けられたことを特徴とする。   Further, the protrusion is provided substantially horizontally in the duct.

また、冷蔵庫本体の正面からみて前記第一の吐出口の両側に第二の吐出口が設けられたことを特徴とする。   The second discharge port is provided on both sides of the first discharge port as viewed from the front of the refrigerator body.

また、前記吐出口の上端部から前記突部の先端部までの長さは、前記吐出口の開口高さよりも長いことを特徴とする。   Moreover, the length from the upper end part of the said discharge outlet to the front-end | tip part of the said protrusion is longer than the opening height of the said discharge outlet, It is characterized by the above-mentioned.

また、前記上部の突部の先端部から前記下部の突部の先端部までの長さは、前記吐出口の開口高さよりも長いことを特徴とする。   Further, the length from the tip of the upper protrusion to the tip of the lower protrusion is longer than the opening height of the discharge port.

また、断熱箱体内に形成された貯蔵室と、前記貯蔵室内の気体を冷却する冷却器と、前記冷却器で冷却された気体を前記貯蔵室に送る送風ファンと、前記送風ファンの上方に設けられ、前記送風ファンで送られた気体が流れる略鉛直方向のダクトと、前記貯蔵室内に設置された貯蔵棚と、前記貯蔵室を開閉可能な貯蔵室扉と、前記貯蔵室扉の背面に設けられた扉ポケットと、を備えた冷蔵庫において、前記ダクトに設けられ、前記送風ファンで送られた気体を前記貯蔵室内に吹き出す第一の吐出口を有し、該第一の吐出口の上部は平面であり、該第一の吐出口の下部であって、かつ前記ダクト内に設けられて、前記貯蔵室に吹き出す気体が前記貯蔵棚の上面に直接向かうように偏向する突部と、を備えたことを特徴とする。   Further, a storage chamber formed in the heat insulation box, a cooler for cooling the gas in the storage chamber, a blower fan for sending the gas cooled by the cooler to the storage chamber, and an upper portion of the blower fan A substantially vertical duct through which the gas sent by the blower fan flows, a storage shelf installed in the storage chamber, a storage chamber door capable of opening and closing the storage chamber, and a back surface of the storage chamber door A refrigerator having a door pocket, and a first discharge port that is provided in the duct and blows out the gas sent by the blower fan into the storage chamber, and an upper portion of the first discharge port is A protrusion that is a flat surface, is provided in the duct, and is deflected so that the gas blown into the storage chamber is directed directly toward the upper surface of the storage shelf. It is characterized by that.

また、断熱箱体内に形成された貯蔵室と、前記貯蔵室内の気体を冷却する冷却器と、前記冷却器で冷却された気体を前記貯蔵室に送る送風ファンと、前記送風ファンの上方に設けられ、前記送風ファンで送られた気体が流れる略鉛直方向のダクトと、前記貯蔵室内に設置された貯蔵棚と、前記貯蔵室を開閉可能な貯蔵室扉と、前記貯蔵室扉の背面に設けられた扉ポケットと、を備えた冷蔵庫において、前記ダクトに設けられ、前記送風ファンで送られた気体を前記貯蔵室内に吹き出す第一の吐出口を有し、該第一の吐出口の上部及び下部には前記ダクト内に向けて突部が設けられており、前記貯蔵室に吹き出す気体が前記貯蔵棚の上面に直接向かうように前記突部は上部よりも下部が長いことを特徴とする。   Further, a storage chamber formed in the heat insulation box, a cooler for cooling the gas in the storage chamber, a blower fan for sending the gas cooled by the cooler to the storage chamber, and an upper portion of the blower fan A substantially vertical duct through which the gas sent by the blower fan flows, a storage shelf installed in the storage chamber, a storage chamber door capable of opening and closing the storage chamber, and a back surface of the storage chamber door A refrigerator having a door pocket, and a first outlet that is provided in the duct and blows out the gas sent by the blower fan into the storage chamber, and an upper portion of the first outlet and A protrusion is provided in the lower part toward the inside of the duct, and the protrusion is characterized in that the lower part is longer than the upper part so that the gas blown into the storage chamber is directed directly to the upper surface of the storage shelf.

また、前記第一の吐出口の両側に設けられ、前記送風ファンで送られた気体を前記扉ポケットに直接向かうように吹き出す第二の吐出口を有することを特徴とする。   Moreover, it has a 2nd discharge port provided in the both sides of said 1st discharge port, and blows off the gas sent with the said ventilation fan so that it may go directly to the said door pocket.

また、前記貯蔵室内に設置された複数の貯蔵棚を有し、前記最も上方の貯蔵棚よりも前記扉ポケットの開口が上方に位置し、前記第一の吐出口及び前記第二の吐出口は前記扉ポケットの開口よりも上方に位置することを特徴とする。   In addition, it has a plurality of storage shelves installed in the storage chamber, the opening of the door pocket is located above the uppermost storage shelf, the first discharge port and the second discharge port are It is located above the opening of the door pocket.

また、前記冷蔵室の背面の少なくとも一部を高熱伝導部材としたことを特徴とする。   Further, at least a part of the back surface of the refrigerator compartment is a high heat conductive member.

また、前記ダクトは前記貯蔵室の背面の中央付近に配置され、前記高熱伝導部材は前記ダクトの両側に設けられることを特徴とする。   The duct may be disposed near the center of the back surface of the storage chamber, and the high heat conductive member may be provided on both sides of the duct.

また、前記ダクトの左右に略対称に前記第二の吐出口を備えたことを特徴とする。   Further, the second discharge port is provided substantially symmetrically on the left and right of the duct.

以上のような本発明によれば、熱損失を低減させ、省エネ性に優れた冷蔵庫を提供することができる。   According to the present invention as described above, it is possible to provide a refrigerator that reduces heat loss and is excellent in energy saving.

本発明の実施の形態を、図１〜図２０を参照しながら説明する。なお、以下の説明では、同一機能部品については同一符号を付して重複説明を省略する。   An embodiment of the present invention will be described with reference to FIGS. In the following description, the same functional parts are denoted by the same reference numerals, and redundant description is omitted.

図１は本実施例の冷蔵庫を正面から見た図である。図１に示すように、冷蔵庫本体１は、上部に冷蔵室２、冷蔵室２の下方に製氷室３及び急冷凍室４が設置され、冷蔵庫本体１の下部に野菜室６が設置され、製氷室３及び急冷凍室４と野菜室６との間に冷凍室５が設置されて構成される。   FIG. 1 is a front view of the refrigerator of this embodiment. As shown in FIG. 1, the refrigerator main body 1 has a refrigerator compartment 2 at the top, an ice making chamber 3 and a quick freezer compartment 4 below the refrigerator compartment 2, a vegetable compartment 6 at the bottom of the refrigerator main body 1, and ice making. A freezing room 5 is installed between the room 3 and the quick freezing room 4 and the vegetable room 6.

冷蔵室２は、前方に回転式の扉２ａを備え、製氷室３，急冷凍室４，冷凍室５、及び野菜室６は、引き出し式の扉３ａ，４ａ，５ａ，６ａをそれぞれ備えている。   The refrigerator compartment 2 is provided with a rotary door 2a on the front side, and the ice making compartment 3, the quick freeze compartment 4, the freezer compartment 5 and the vegetable compartment 6 are provided with drawer doors 3a, 4a, 5a and 6a, respectively. .

図２は、本実施例の冷蔵庫の庫内の構成を表す断面図である。図２に示すように、冷蔵庫１の庫外と庫内は断熱箱体１０により隔てられている。また、断熱仕切壁２８により冷蔵室２と、急冷凍室４及び製氷室３（図２中に図示しない）は隔てられ、冷凍室５と野菜室６は断熱仕切壁２９によって隔てられている。冷蔵室２の回転式の扉２ａの庫内側には、複数の扉ポケット３２が備えられている。また、冷蔵室２は複数の棚３６によって、複数のスペースに区画される構成である。急冷凍室４，冷凍室５及び野菜室６は、それぞれの貯蔵室の前方に備えられた引き出し式の扉４ａ，５ａ，６ａを引出すことに伴って引出される収納容器４ｂ，５ｂ，６ｂがそれぞれ備えられている。図１に示す製氷室３も同様に、引き出し式の扉３ａに、図示しない収納容器が備えられている。   FIG. 2 is a cross-sectional view illustrating a configuration inside the refrigerator of the present embodiment. As shown in FIG. 2, the outside of the refrigerator 1 and the inside of the refrigerator are separated by a heat insulating box 10. In addition, the refrigerator compartment 2 is separated from the quick freeze compartment 4 and the ice making compartment 3 (not shown in FIG. 2) by the heat insulating partition wall 28, and the freezer compartment 5 and the vegetable compartment 6 are separated from each other by the heat insulating partition wall 29. A plurality of door pockets 32 are provided inside the rotary door 2 a of the refrigerator compartment 2. The refrigerator compartment 2 is configured to be partitioned into a plurality of spaces by a plurality of shelves 36. The quick-freezing compartment 4, the freezing compartment 5 and the vegetable compartment 6 have storage containers 4b, 5b, 6b that are pulled out by pulling out the pull-out type doors 4a, 5a, 6a provided in front of the respective storage compartments. Each is provided. Similarly, the ice making chamber 3 shown in FIG. 1 is provided with a storage container (not shown) in a drawer-type door 3a.

冷却器７は下段冷凍室５の背面壁と断熱箱体１０の間に形成された冷却器収納室８内に備えられている。冷却器７の上方には、庫内送風ファン９が備えられている。これにより、冷却器７で熱交換した気体（本明細書中においては、熱交換した低温空気を冷気と称する）が各室へ送られる。庫内送風ファン９の上方には、ダンパ２０が設置されており、各室への送風はダンパ２０の開閉により制御される。ダンパ２０が閉状態のとき、冷気は上段冷凍室送風ダクト１２，下段冷凍室送風ダクト１３、及び図示しない製氷室送風ダクトを介して、急冷凍室４，冷凍室５、及び製氷室３に送られる。一方、ダンパ２０が開状態のときには、冷気は製氷室３，急冷凍室４、及び冷凍室５へ送られると同時に、冷蔵室送風ダクト１１、及び図示しない野菜室送風ダクトを介して冷蔵室２及び野菜室６に送られる。   The cooler 7 is provided in a cooler storage chamber 8 formed between the back wall of the lower freezing chamber 5 and the heat insulating box 10. An internal fan 9 is provided above the cooler 7. As a result, gas exchanged by the cooler 7 (in this specification, heat-exchanged low-temperature air is referred to as cold air) is sent to each chamber. A damper 20 is installed above the internal blower fan 9, and air blowing to each chamber is controlled by opening and closing the damper 20. When the damper 20 is in the closed state, the cold air is sent to the quick freezing room 4, the freezing room 5, and the ice making room 3 via the upper freezing room air duct 12, the lower freezing room air duct 13, and an ice making room air duct (not shown). It is done. On the other hand, when the damper 20 is in the open state, the cold air is sent to the ice making room 3, the quick freezing room 4 and the freezing room 5, and at the same time, the refrigerating room 2 through the refrigerating room air duct 11 and the vegetable room air duct not shown. And sent to the vegetable compartment 6.

また、冷蔵庫本体１の下部後方（野菜室６の後方）には、機械室１９が備えられている。機械室１９には、圧縮機２４及び図示しない放熱器（凝縮器）が収納されており、図示しない庫外送風ファンにより通風される。圧縮機２４と、図示しない放熱器、絞り機構、及び冷却器７は、図示しない冷媒管で連結され冷凍サイクルを構成する。冷媒管内部を流れる冷媒としてはイソブタンが好適であるが、これに限るものではなく各種の冷媒を用いてもよい。また、電気品を搭載した基板３１は、冷蔵庫１の天井壁の後部に設置される。   A machine room 19 is provided at the lower rear of the refrigerator main body 1 (the rear of the vegetable compartment 6). The machine room 19 stores a compressor 24 and a radiator (condenser) (not shown), and is ventilated by an outside fan (not shown). The compressor 24, a radiator (not shown), a throttle mechanism, and the cooler 7 are connected by a refrigerant pipe (not shown) to constitute a refrigeration cycle. Isobutane is suitable as the refrigerant flowing in the refrigerant pipe, but is not limited thereto, and various refrigerants may be used. In addition, the substrate 31 on which the electrical product is mounted is installed at the rear part of the ceiling wall of the refrigerator 1.

冷却器７に付着した霜は、除霜ヒータ２２により定期的に除霜される。除霜によって生じた除霜水は、冷却器収納室８の下部に備えられた樋２３に流入した後に、排水管２７を介して蒸発皿２１に達し、蒸発が促進される。また、冷蔵庫本体１の断熱箱体１０には、ウレタンフォームと複数の真空断熱材２５が設置されている。これにより、断熱効果を高めることができ、省エネ化に寄与することができる。   The frost adhering to the cooler 7 is periodically defrosted by the defrost heater 22. The defrosted water generated by the defrosting flows into the eaves 23 provided at the lower part of the cooler storage chamber 8 and then reaches the evaporating dish 21 through the drain pipe 27 to promote evaporation. In addition, urethane foam and a plurality of vacuum heat insulating materials 25 are installed in the heat insulating box 10 of the refrigerator body 1. Thereby, the heat insulation effect can be improved and it can contribute to energy saving.

図３は、本実施例の冷蔵庫の冷蔵室扉２ａを開けた状態を正面から見た図である。図３に示すように、冷蔵室２の後部の略中央には、冷蔵室送風ダクト１１が、略鉛直方向に備えられている。さらに、冷蔵室送風ダクト１１には、庫内へ冷気を吐出する吐出口が設けられている。また、冷蔵室２の背面の冷蔵室送風ダクト１１の左右両側には、高熱伝導性の冷却パネル３５（例えば、アルミニウムパネル）が備えられている。   FIG. 3 is a front view of the refrigerator door 2a of the refrigerator of this embodiment when opened. As shown in FIG. 3, a refrigerating room air duct 11 is provided in a substantially vertical direction substantially at the center of the rear part of the refrigerating room 2. Furthermore, the refrigerator compartment air duct 11 is provided with a discharge port for discharging cool air into the refrigerator. In addition, a high thermal conductive cooling panel 35 (for example, an aluminum panel) is provided on both the left and right sides of the refrigerator compartment air duct 11 on the back of the refrigerator compartment 2.

具体的には、ダクト１１の略鉛直方向に第一の吐出口３４が複数設けられている。また、第一の吐出口３４よりも冷却パネル３５側には、左右に略対称に第二の吐出口３３が複数設けられている。   Specifically, a plurality of first discharge ports 34 are provided in a substantially vertical direction of the duct 11. Further, a plurality of second discharge ports 33 are provided on the cooling panel 35 side of the first discharge port 34 in a substantially symmetrical manner on the left and right.

詳細は後述するが、冷蔵室送風ダクト１１内の流れ方向と逆方向（下方向）の速度成分を持った冷気が吐出されるのが、第一の吐出口３４（逆向に冷気を吐出する吐出口）である。一方、冷蔵室送風ダクト１１内の流れ方向（上方向）の速度成分を持った冷気が吐出されるのが、第二の吐出口３３（順向に冷気を吐出する吐出口）である。第一の吐出口３４、第二の吐出口３３からは、それぞれ冷気が吐出される。   Although details will be described later, the cool air having a velocity component in the direction opposite to the flow direction (downward) in the refrigerating chamber blower duct 11 is discharged. Exit). On the other hand, the second discharge port 33 (the discharge port for discharging cool air in the forward direction) discharges cool air having a velocity component in the flow direction (upward direction) in the refrigerating chamber blower duct 11. Cold air is discharged from the first discharge port 34 and the second discharge port 33, respectively.

次に、図３中に示すスペース１（冷蔵室２の天井壁，背面壁，扉２ａ，最上段の棚３６Ａとで区画形成されたの上方のスペース）を例に挙げて、第一の吐出口３４と、第二の吐出口３３の特徴を説明する。   Next, taking the space 1 shown in FIG. 3 (the upper space defined by the ceiling wall, the rear wall, the door 2a, and the uppermost shelf 36A of the refrigerator compartment 2) as an example, the first discharge The features of the outlet 34 and the second outlet 33 will be described.

図４は、第二の吐出口３３からスペース１に吐出された冷気の流れを表す図である。図４に示すように、第二の吐出口３３から吐出された冷気は、冷蔵室送風ダクト１１内の流れ方向の成分を持って吐出するために、スペース１内の上方に向かう。したがって、冷気はまず冷蔵室天井面２ｂに当たり、次に最上段の扉ポケット３２に収納されている食品３０に至る。続いて、一部が最上段の棚３６Ａの上に置かれた食品３７に向かい、残りは棚３６Ａと扉ポケット３２の隙間から下方のスペースに向かって流れる。   FIG. 4 is a diagram illustrating the flow of cold air discharged from the second discharge port 33 to the space 1. As shown in FIG. 4, the cold air discharged from the second discharge port 33 goes upward in the space 1 in order to discharge with a component in the flow direction in the refrigerator compartment air duct 11. Therefore, the cold air first hits the refrigerator compartment ceiling surface 2b, and then reaches the food 30 stored in the uppermost door pocket 32. Subsequently, a part thereof goes to the food 37 placed on the uppermost shelf 36A, and the rest flows from the gap between the shelf 36A and the door pocket 32 toward the lower space.

このような第二の吐出口３３は、吐出冷気に上向き速度成分があるために、遠方まで冷気を送る。すなわち、冷蔵室送風ダクト１１から遠い位置にある扉ポケット３２に収納されている食品３０に確実に冷気を供給することができる。しかしながら、冷蔵室送風ダクト１１から近い棚３６Ａ上の食品３７の冷却を考えた場合、冷気は冷蔵室天井面２ｂと扉ポケット３２に収納されている食品３０を冷却するので、温度が高くなる。さらに拡散によって低速になって棚３６上の食品３７に到達するので、食品３７の冷却速度が遅くなるおそれがある。すなわち、冷蔵室送風ダクト１１から近い位置にある棚３６Ａ上の食品３７を素早く冷却するには適さない。   Since the second discharge port 33 has an upward speed component in the discharge cold air, the second discharge port 33 sends the cold air far away. That is, it is possible to reliably supply cold air to the food 30 stored in the door pocket 32 located far from the refrigerator compartment air duct 11. However, when cooling the food 37 on the shelf 36 </ b> A close to the refrigerating room air duct 11 is considered, the cold air cools the food 30 stored in the refrigerating room ceiling surface 2 b and the door pocket 32, so that the temperature rises. Furthermore, since it becomes slow by diffusion and reaches the food 37 on the shelf 36, the cooling rate of the food 37 may be slow. That is, it is not suitable for quickly cooling the food 37 on the shelf 36 </ b> A located near the refrigerator compartment air duct 11.

第二の吐出口３３は、このような特性があるため、吐出口を第二の吐出口３３のみとした場合、棚３６Ａ上の食品が冷え難いおそれがある。同時に、冷蔵室天井面２ｂ、及び扉ポケット３２を過剰に冷却することになる。特に食品が設置できない冷蔵室天井面２ｂを過剰に冷却することは、熱損失が大きくなるため、省エネ性を低下させてしまうおそれがある。   Since the second discharge port 33 has such characteristics, when only the second discharge port 33 is used as the discharge port, the food on the shelf 36A may not be easily cooled. At the same time, the refrigerator compartment ceiling surface 2b and the door pocket 32 are excessively cooled. In particular, excessive cooling of the refrigerator compartment ceiling surface 2b where no food can be placed increases heat loss, which may reduce energy saving performance.

一方、図５は第一の吐出口３４から吐出される冷気の流れを表す図である。図５に示すように、第一の吐出口３４から吐出された冷気は、冷蔵室送風ダクト１１内の流れ方向と逆向きの成分を持って吐出されるので、スペース１内の下方に向かう。すなわち、第１の吐出口３４から吐出された冷気は、低温のまま比較的速く食品３７に到達するため、食品３７を素早く冷却することができる。一方、下方に向けて吐出しされた低温の冷気は、吐出口から離れて拡散が徐々に進み、自然対流によってさらに下方へ向かうため、冷蔵室送風ダクト１１から遠い位置にある扉ポケット３２に収納されている食品３０まで冷気が届きにくくなる。すなわち、大容量の冷蔵室の場合、特に冷蔵室送風ダクト１１から近い位置にある棚３６上の食品３７を素早く冷却するには適しているが、冷蔵室送風ダクト１１から遠い位置にある扉ポケット３２に収納されている食品３０の冷却効率が低下してしまうおそれがある。   On the other hand, FIG. 5 is a diagram showing the flow of cool air discharged from the first discharge port 34. As shown in FIG. 5, the cold air discharged from the first discharge port 34 is discharged with a component opposite to the flow direction in the refrigerating chamber blower duct 11, and thus goes downward in the space 1. That is, since the cold air discharged from the first discharge port 34 reaches the food 37 relatively quickly at a low temperature, the food 37 can be quickly cooled. On the other hand, the low-temperature cold air discharged downward is gradually diffused away from the discharge port and further downward due to natural convection, so that it is stored in the door pocket 32 located far from the refrigerator air duct 11. It becomes difficult for cold air to reach the food 30 that is being used. That is, in the case of a large-capacity refrigerator compartment, it is particularly suitable for quickly cooling the food 37 on the shelf 36 located close to the refrigerator compartment air duct 11, but the door pocket located far from the refrigerator compartment air duct 11. There is a possibility that the cooling efficiency of the food 30 stored in the 32 is lowered.

第一の吐出口３４は、このような特性があるため、吐出口を第一の吐出口３４のみとした場合、扉ポケット３２に収納されている食品３０の冷却を十分に行うことが困難となる。これは図５に示す最上段のスペース１のみならず、スペース１の下方の各スペース（棚で形成された空間）に関しても共通する課題である。特に、上方から流下してくる冷気が期待できない、最上段の扉ポケット３２に関しては、上述した扉ポケット３２に収納されている食品３０の冷却が十分行えないという課題が顕著に現れる。さらに本実施例の冷蔵庫では、図５に示すように、最上段の扉ポケット３２の開口面が、最上段の棚３６より上方に位置しているので、第１の吐出口３４のみでは扉ポケット３２に冷気を届かせることが極めて困難になる。   Since the first discharge port 34 has such characteristics, it is difficult to sufficiently cool the food 30 stored in the door pocket 32 when only the first discharge port 34 is used as the discharge port. Become. This is a common problem not only for the uppermost space 1 shown in FIG. 5 but also for each space below the space 1 (a space formed by shelves). In particular, with respect to the uppermost door pocket 32 where cold air flowing down from above cannot be expected, the problem that the food 30 stored in the door pocket 32 cannot be sufficiently cooled appears. Further, in the refrigerator of the present embodiment, as shown in FIG. 5, the opening surface of the uppermost door pocket 32 is located above the uppermost shelf 36, so that the door pocket is formed only by the first outlet 34. It becomes extremely difficult to reach the cold air to 32.

以上で説明したように、第二の吐出口３３と第一の吐出口３４には一長一短があるため、この両者を併用することで、相互の短所を補完することができ、理想的な冷却が可能となる。なお、図５に示すように、逆向に吐出させるために、第一の吐出口３４の上流側の冷蔵室送風ダクト内面に風向転向リブ３８を設けている（詳細は後述）。   As described above, since the second discharge port 33 and the first discharge port 34 have their merits and demerits, by using both of them, mutual disadvantages can be complemented, and ideal cooling can be achieved. It becomes possible. In addition, as shown in FIG. 5, in order to discharge in the reverse direction, a wind direction turning rib 38 is provided on the inner surface of the refrigeration chamber air duct upstream of the first discharge port 34 (details will be described later).

次に、第２の吐出口３３と第１の吐出口３４から吐出される冷気の水平方向の流れについて、図６を参照しながら説明する。図６は、図４及び図５に示すスペース１を上方（冷蔵室天井面２側）から見た図である。図６中の白抜きの矢印は、第二の吐出口３３から吐出される冷気の流れを表し、黒塗りの矢印は第一の吐出口３４から吐出される冷気の流れを表す。また、長破線で囲まれた範囲は、上方（冷蔵室天井面２）に図２（あるいは図４，図５）に示す基板３１が設置されている領域を表す。図６に示すように、第２の吐出口３３は、吐出方向が冷却パネル３５から角度φで前方（扉方向）に左右に次第に広がるように備えられている。すなわち、第二の吐出口３３から吐出した冷気は、扉ポケット３２に向かって流れる。一方、第１の吐出口３４からは、前方に向けて冷気が吐出される。冷蔵庫運転時には、冷蔵室天井面２に設置される基板３１は発熱し高温となるから、冷蔵室天井面２ｂの中でも、上方に基板３１がある長破線で示す面、特に中心付近（領域Ａ。短破線で囲まれた領域）は温度が高くなる、そのため、冷蔵室天井面２ｂの領域Ａに吐出冷気を直接当てると熱損失が大きくなる。よって、第２の吐出口３３は、領域Ａ方向に向けることは省エネの観点から好ましくない。本実施例の冷蔵庫では、図５，図６に示すように、第二の吐出口３３を領域Ａ方向に直接流れないようにしているので、基板３１の影響による熱損失を抑えることができる。また、第２の吐出口３３及び第１の吐出口３４は、前方の冷蔵室扉２ａに向かって流れる。よって、食品を設置できない冷蔵室側面２ｃ及び、冷蔵室背面２ｄには直接、冷気が流れないようになり、冷却損失を低減でき、省エネ性が良い冷蔵庫となっている。さらに、冷蔵室には直接冷気が流れないように送風ダクト１１の両側の冷蔵室背面２ｄには、高熱伝導部材である冷却パネル３５が設られる。これにより、冷蔵室送風ダクト１１近傍の冷熱を伝えて、冷気が到達し難い冷蔵室送風ダクト１１の両側の冷蔵室背面２ｄ近傍の領域（領域Ｂ）の冷却を補助している。加えて、冷蔵室送風ダクト１１が冷蔵室背面２ｄの中央に位置し、第２の吐出口３３及び第１の吐出口３４は冷蔵室送風ダクト１１の略鉛直方向に複数設けられているので、冷蔵室２内には均一に冷気が行き渡り、温度ムラを抑えることができる。また、冷蔵室送風ダクト１１を、単一のダクト１１としているので、冷蔵室背面に低温冷気が通るダクト１１を複数箇所設ける場合に比べて、ダクト１１からの熱損失を小さく抑えることができるため、省エネ性が良い冷蔵庫となっている。   Next, the horizontal flow of the cool air discharged from the second discharge port 33 and the first discharge port 34 will be described with reference to FIG. FIG. 6 is a view of the space 1 shown in FIGS. 4 and 5 as viewed from above (the refrigerator compartment ceiling surface 2 side). A white arrow in FIG. 6 represents a flow of cold air discharged from the second discharge port 33, and a black arrow represents a flow of cold air discharged from the first discharge port 34. Further, a range surrounded by a long broken line represents a region where the substrate 31 shown in FIG. 2 (or FIG. 4 or FIG. 5) is installed above (the refrigerator compartment ceiling surface 2). As shown in FIG. 6, the second discharge port 33 is provided such that the discharge direction gradually spreads left and right forward (door direction) at an angle φ from the cooling panel 35. That is, the cold air discharged from the second discharge port 33 flows toward the door pocket 32. On the other hand, cold air is discharged forward from the first discharge port 34. During operation of the refrigerator, the substrate 31 installed on the refrigerator compartment ceiling surface 2 generates heat and becomes high temperature. Therefore, among the refrigerator compartment ceiling surface 2b, the surface indicated by the long broken line with the substrate 31 above, particularly near the center (area A). The temperature of the area surrounded by the short broken line is high. Therefore, when the discharged cold air is directly applied to the area A of the refrigerating room ceiling surface 2b, the heat loss increases. Therefore, it is not preferable from the viewpoint of energy saving that the second discharge port 33 is directed in the direction of the region A. In the refrigerator of this embodiment, as shown in FIGS. 5 and 6, the second discharge port 33 is prevented from flowing directly in the region A direction, so that heat loss due to the influence of the substrate 31 can be suppressed. Moreover, the 2nd discharge port 33 and the 1st discharge port 34 flow toward the front refrigerator compartment door 2a. Therefore, cold air does not flow directly to the refrigerator compartment side surface 2c and the refrigerator compartment rear surface 2d where no food can be placed, and the cooling loss can be reduced, resulting in a good energy-saving refrigerator. Further, a cooling panel 35, which is a high heat conduction member, is provided on the back side 2d of the refrigerator compartment on both sides of the air duct 11 so that cold air does not flow directly into the refrigerator compartment. Thereby, cold heat in the vicinity of the refrigerator compartment air duct 11 is transmitted to assist cooling of the region (region B) in the vicinity of the refrigerator compartment back surface 2d on both sides of the refrigerator compartment air duct 11 where the cold air hardly reaches. In addition, since the refrigerator compartment air duct 11 is located at the center of the refrigerator compartment back surface 2d, and a plurality of the second outlets 33 and the first outlets 34 are provided in the substantially vertical direction of the refrigerator compartment fan duct 11, Cold air is evenly distributed in the refrigerator compartment 2, and temperature unevenness can be suppressed. Moreover, since the refrigerator compartment air duct 11 is made into the single duct 11, since the heat loss from the duct 11 can be restrained small compared with the case where the duct 11 which low-temperature cold air passes through the refrigerator compartment back is provided in multiple places. It has become a refrigerator with good energy savings.

以上で、本実施例の冷蔵庫の構成を説明したが、次に本実施例の冷蔵庫における第２の吐出口３３と、第１の吐出口３４を形成する手段について説明する。   The configuration of the refrigerator of the present embodiment has been described above. Next, means for forming the second discharge port 33 and the first discharge port 34 in the refrigerator of the present embodiment will be described.

図４に示すように、扉と対向するようにダクト１１に開口を設けた吐出口（例えば特許文献１に記載されているダクト１１の吐出口）とした場合、冷気はダクト１１内の流れ方向の速度成分を持って吐出される。よって第２の吐出口３３を形成する手段としては、図４に示すように、ダクト１１の側面に冷却パネル３５から角度φで前方に冷気が吐出されるように開口を設ければよい。一方、第１の吐出口３４は、扉に対向するようにダクト１１側面に形成される。さらに、ダクト１１内の流れ方向を転向させる手段（風向転向手段）が必要となる。一般に、流れ方向を逆向き速度成分を持たせるほどに転向させる場合（図５に示す矢印方向のように吐出する場合）には、大きな圧力損失を伴う。したがって、冷気が吐出されるときに、圧力損失の増加を抑えて転向させる必要がある。本実施例の冷蔵庫では、第１の吐出口３４を形成する手段として、図５に示すように、ダクト１１内の吐出口付近に、風向転向リブ３８が設けられる。これにより、圧力損失の大きな増加を伴わずに、流れ方向を逆向きに転向することができる。この理由を以下で説明する。   As shown in FIG. 4, in the case where the outlet is provided with an opening in the duct 11 so as to face the door (for example, the outlet of the duct 11 described in Patent Document 1), the cold air flows in the duct 11. It is discharged with the velocity component. Therefore, as a means for forming the second discharge port 33, as shown in FIG. 4, an opening may be provided on the side surface of the duct 11 so that cool air is discharged forward from the cooling panel 35 at an angle φ. On the other hand, the first discharge port 34 is formed on the side surface of the duct 11 so as to face the door. Furthermore, a means for turning the flow direction in the duct 11 (wind direction turning means) is required. In general, when the flow direction is changed so as to have a reverse velocity component (when discharging is performed as indicated by the arrows in FIG. 5), a large pressure loss is involved. Therefore, when cool air is discharged, it is necessary to turn around while suppressing an increase in pressure loss. In the refrigerator of the present embodiment, as shown in FIG. 5, wind direction turning ribs 38 are provided in the vicinity of the discharge port in the duct 11 as means for forming the first discharge port 34. As a result, the flow direction can be reversed in the reverse direction without a large increase in pressure loss. The reason for this will be described below.

はじめに、第２の吐出口３３から吐出する冷気の吐出角度について説明する。図７は、風国転向リブ３８を設けない場合の、第２の吐出口３３付近の流れの様子を表す、参考例１の図である。冷蔵室送風ダクト１１の第２の吐出口３３近傍の破線で囲った領域を検査領域とする。ダクト１１の奥行寸法をＷとして、ダクト１１内を圧力（静圧）Ｐ（冷蔵室送風ダクト１１外の圧力を０とする），流速ｕ1，密度ρの冷気が第２の吐出口３３に向かって流れ、第２の吐出口３３（開口高さＨ1）から流速ｕ2の冷気が角度θ方向に吐出するとする。下流側に壁（ダクト１１の上端部）が存在することにより、流れがせき止められ、上流側の流速ｕ1分の動圧（ρｕ1 2／２）のβ倍だけ圧力が高くなるとする。また、第２の吐出口３３に対向する壁面（ダクト１１の背面壁）が流れを押す圧力をＰとする。以上の記号を用いて、第２の吐出口３３からの吐出角度θは、式（１）のようになる。尚、式（１）を導出する際には、簡略化のため、破線で囲った検査領域内の圧力損失，粘性，圧縮性の影響は無視している。 First, the discharge angle of the cold air discharged from the second discharge port 33 will be described. FIG. 7 is a diagram of Reference Example 1 showing a flow state in the vicinity of the second discharge port 33 when the wind country turning rib 38 is not provided. A region surrounded by a broken line in the vicinity of the second discharge port 33 of the refrigerator compartment air duct 11 is set as an inspection region. The depth dimension of the duct 11 is W, and the inside of the duct 11 has a pressure (static pressure) P (the pressure outside the refrigerating chamber blower duct 11 is 0), cold air having a flow velocity u 1 and a density ρ enters the second discharge port 33. It is assumed that the cool air having a flow velocity u 2 is discharged in the angle θ direction from the second discharge port 33 (opening height H 1 ). By wall (upper portion of the duct 11) is present on the downstream side, the flow is dammed up, beta multiplied by the pressure on the upstream side of the flow velocity u 1 minute dynamic pressure (ρu 1 2/2) is to be high. Further, P is a pressure at which the wall surface facing the second discharge port 33 (the back wall of the duct 11) pushes the flow. Using the above symbols, the discharge angle θ from the second discharge port 33 is expressed by Equation (1). When deriving the formula (1), for the sake of simplification, the effects of pressure loss, viscosity, and compressibility in the inspection region surrounded by a broken line are ignored.

Figure 2009036451
式（１）中のαは縮流係数であり、吐出冷気の断面積が最小となる位置における断面高さをＨcとして、α＝Ｈc／（Ｈ1sinθ）と定義する。流れをせき止めた場合であっても、終端部の圧力は上流における静圧Ｐに動圧（ρｕ1 2／２）を加えた値以上に上昇しないからβ≦１である。また、冷気が吐出することから、０゜＜θ＜１８０゜であり、sinθ＞０となる。すなわち、流係数α＞０となる。以上から、図７に示す第２の吐出口３３ではtanθ＞０、すなわち、θ＜９０゜となることがわかる。このことから、図７に示す形態の吐出口とした場合には、吐出冷気の流れは、ダクト内の流れ方向の成分を持つことがわかる。
Figure 2009036451
 Α in the equation (1) is a contraction coefficient, and is defined as α = H c / (H 1 sin θ), where H c is the cross-sectional height at the position where the cross-sectional area of the discharged cold air is minimized. Even when the damming the flow, pressure of the end portion is beta ≦ 1 do not rise in dynamic pressure (ρu 1 2/2) values or by adding to the static pressure P in the upstream. Further, since cool air is discharged, 0 ° <θ <180 ° and sinθ> 0. That is, the flow coefficient α> 0. From the above, it can be seen that tan θ> 0, that is, θ <90 ° at the second discharge port 33 shown in FIG. From this, in the case of the discharge port of the form shown in FIG. 7, it can be seen that the flow of the discharged cool air has a component in the flow direction in the duct.

図１３は、図７に示すようにダクト側面に開口を設けた場合の、吐出流れの様子を数値解析（二次元モデル）により可視化したものである。数値解析は、汎用の流体解析ソフト（商品名：ＳＴＡＲ−ＣＤ 製造元：株式会社シーディー・アダプコ・ジャパン）を用いて行った。諸数値は図７に示す寸法記号に対応して、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mmであり、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１３に示すように吐出口からの吐出流れは、ダクト内流れ方向の成分を持って吐出していることがわかる。この解析モデルにおける圧力損失は２.５２Ｐａである。 FIG. 13 is a visualization of the state of discharge flow by numerical analysis (two-dimensional model) when an opening is provided on the side of the duct as shown in FIG. Numerical analysis was performed using general-purpose fluid analysis software (trade name: STAR-CD, manufacturer: C / A Adapto Japan Co., Ltd.). The numerical values correspond to the dimension symbols shown in FIG. 7, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, and give a uniform flow at a flow velocity of 0.5 m / s to the duct inlet. The flow field was analyzed. As shown in FIG. 13, it can be seen that the discharge flow from the discharge port discharges with a component in the flow direction in the duct. The pressure loss in this analytical model is 2.52 Pa.

次に、ダクト内の流れ方向と逆向きの速度成分を持った冷気を吐出させる、すなわち、θ＞９０゜とする条件を考えると、式（１）の形から、β＞２とする必要がある。つまり、ダクト内の流速ｕ1の持つ動圧（ρｕ1 2／２）の２倍より大きい圧力で検査体積内の流体を押し返さなければならない。しかし、上述したように、ダクト内流れをせき止めてもβ≦１しか期待できないから、ダクト内において、吐出口の下流側の壁面を転向したい方向に傾斜させる等の工夫をしても、β＞２の条件を満足することができず、第１の吐出口３４を形成することはできない。 Next, considering the condition that cool air having a velocity component opposite to the flow direction in the duct is discharged, that is, θ> 90 °, it is necessary to satisfy β> 2 from the form of equation (1). is there. That must repelled fluid in the test volume at a pressure greater than 2 times the dynamic pressure (ρu 1 2/2) with a flow rate u 1 in the duct. However, as described above, even if the flow in the duct is blocked, only β ≦ 1 can be expected. Therefore, even if a device such as inclining the wall surface on the downstream side of the discharge port in the direction in which it is desired to turn is used, β> The second condition cannot be satisfied, and the first discharge port 34 cannot be formed.

そこで、第１の吐出口３４を形成する手段として、図９に示すように、曲げ風路４１を形成する方式（参考例２）を考える。ここで、曲げ風路４１とは、吐出方向が下向きに傾斜するように部材３９，３９′を、吐出口に互いに対向するように設けて、冷気にダクト内流れ方向と逆向きの速度成分を持たせて吐出させるべく風路である。   Therefore, as a means for forming the first discharge port 34, a method of forming a bent air passage 41 (reference example 2) as shown in FIG. 9 is considered. Here, the bent air passage 41 is provided with members 39 and 39 'so that the discharge direction is inclined downward, facing the discharge port so that a velocity component opposite to the flow direction in the duct is applied to the cold air. It is a wind path to hold and discharge.

図１６は、図９に示すように曲げ風路４１を設けた場合の流れを数値解析（二次元モデル）により可視化したものである。図９に示す寸法記号に対応するように、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mm，Ｌ＝１０mm，α＝１１０゜として、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１６に示すように吐出口からの吐出流れは、曲げ風路４１によって転向され、ダクト内流れ方向と逆向きの速度成分を持って吐出されていることがわかる。しかしながら、図１６の解析モデルにおける圧力損失は３.６９Ｐａであり、図１３に示す第２の吐出口の圧力損失２.５２Ｐａに比べて圧力損失が大きくなっていることがわかる。これは、曲げ風路４１に流入する際に、吐出口下方の部材３９（風路４１の下面）から流れが剥離し、上方の部材３９′（曲げ風路４１の上面）側に流れが偏ることで、吐出口部材３９′付近に速い流れ（縮流）が生じるためである。一般に、流れが広い空間に吐出される際の圧力損失（吐出拡大損失）は、吐出風速の二乗にほぼ比例して大きくなることから、図９に示すように風向転向部材に衝突させる方式で転向させた場合、縮流の影響で第２の吐出口３３に比べて圧力損失は大きくなってしまう。 FIG. 16 visualizes the flow when the bending air passage 41 is provided as shown in FIG. 9 by numerical analysis (two-dimensional model). In order to correspond to the dimension symbols shown in FIG. 9, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, L = 10 mm, α = 110 °, and a flow velocity of 0.5 m / s at the duct inlet. The flow field was analyzed by giving a uniform flow. As shown in FIG. 16, it can be seen that the discharge flow from the discharge port is turned by the bending air passage 41 and discharged with a velocity component opposite to the flow direction in the duct. However, the pressure loss in the analysis model of FIG. 16 is 3.69 Pa, and it can be seen that the pressure loss is larger than the pressure loss 2.52 Pa of the second discharge port shown in FIG. This is because when flowing into the bent air passage 41, the flow is separated from the member 39 below the discharge port (the lower surface of the air passage 41), and the flow is biased toward the upper member 39 ′ (the upper surface of the bent air passage 41). This is because a fast flow (constricted flow) is generated in the vicinity of the discharge port member 39 '. In general, the pressure loss (discharge expansion loss) when the flow is discharged in a wide space increases substantially in proportion to the square of the discharge wind speed. In this case, the pressure loss becomes larger than that of the second discharge port 33 due to the influence of the contracted flow.

また、第１の吐出口３４を形成する別の手段として、図１０に示す方式（参考例３）が考えられる。図１０では、ダクトの外部であって、且つ吐出口の外部の上方に吐出方向に傾斜させた部材４０を設けている。この場合、流れを転向させることは可能であるが、部材４０がない場合には、ダクト内の流れ方向の成分を持って吐出する流れを、部材４０に衝突させ、押し返すことで吐出する流れを転向させることになるため、部材４０の近傍に縮流が生じる。したがって、図１０に示す方式も縮流の影響で第２の吐出口３３に比べて圧力損失は大きくなる。   Further, as another means for forming the first discharge port 34, the method shown in FIG. 10 (Reference Example 3) can be considered. In FIG. 10, the member 40 inclined in the discharge direction is provided outside the duct and above the outside of the discharge port. In this case, it is possible to turn the flow, but when there is no member 40, the flow to be discharged having a component in the flow direction in the duct is made to collide with the member 40, and the flow to be discharged is pushed back. Since it is turned, a contracted flow is generated in the vicinity of the member 40. Accordingly, in the method shown in FIG. 10 as well, the pressure loss is larger than that of the second discharge port 33 due to the effect of contraction.

図１７は、図１３に示すように吐出口の外部の上方に吐出方向に傾斜させた部材４０を設けた場合の流れを、数値解析（二次元モデル）により可視化したものである。図１０に示す寸法記号に対応して、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mm，Ｌ＝１０mm，α＝１１０゜として、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１７に示すように吐出口からの吐出流れは、部材４０によって転向され、ダクト内流れ方向と逆向きの速度成分を持って吐出されていることがわかるが、図１７の解析モデルにおける圧力損失は３.９４Ｐａであり、図１３に示す第２の吐出口３３の圧力損失２.５２Ｐａに比べて圧力損失が大きくなっていることがわかる。 FIG. 17 visualizes the flow when the member 40 inclined in the discharge direction is provided above the outside of the discharge port as shown in FIG. 13 by numerical analysis (two-dimensional model). Corresponding to the dimension symbols shown in FIG. 10, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, L = 10 mm, α = 110 °, and a flow velocity of 0.5 m / s at the duct inlet. The flow field was analyzed by giving a flow. As shown in FIG. 17, it can be seen that the discharge flow from the discharge port is turned by the member 40 and is discharged with a velocity component opposite to the flow direction in the duct, but the pressure loss in the analysis model of FIG. Is 3.94 Pa, and it can be seen that the pressure loss is larger than the pressure loss 2.52 Pa of the second discharge port 33 shown in FIG.

一方、実施例１を示した図８は、第１の吐出口３４を形成する手段として、風向転向リブ３８を第１の吐出口３４に対して上流側（下側）のダクト内部に設けたものである。   On the other hand, FIG. 8 showing Example 1 has a wind direction turning rib 38 provided inside the duct on the upstream side (lower side) with respect to the first discharge port 34 as means for forming the first discharge port 34. Is.

図１４は第１の吐出口３４を形成する手段として、風向転向リブ３８を第１の吐出口３４に対して上流側（下側）のダクト内部に設けた場合の流れを数値解析（二次元モデル）により可視化したものである。図８に示す寸法記号に対応させて、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mm，Ｌ1＝７.５mmとして、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１４に示すように吐出口からの吐出流れは、風向転向リブ３８によって転向され、ダクト内流れ方向と逆向きの速度成分を持って吐出されていることがわかる。図１４の解析モデルにおける圧力損失は２.２８Ｐａであり、図９（図１６），図１０（図１７）に示す手段に比べて圧力損失が小さく、さらに、図１３に示す第２の吐出口３３の圧力損失２.５２Ｐａに比べて圧力損失が同等以下になっていることがわかる。この理由を以下で説明する。 FIG. 14 shows a numerical analysis (two-dimensional) of the flow when a wind direction turning rib 38 is provided in the duct on the upstream side (lower side) with respect to the first discharge port 34 as means for forming the first discharge port 34. Model). Corresponding to the dimension symbols shown in FIG. 8, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, L 1 = 7.5 mm, and a uniform flow rate of 0.5 m / s at the duct inlet The flow field was analyzed. As shown in FIG. 14, it can be seen that the discharge flow from the discharge port is turned by the wind direction turning rib 38 and discharged with a velocity component opposite to the flow direction in the duct. The pressure loss in the analytical model of FIG. 14 is 2.28 Pa, which is smaller than the means shown in FIGS. 9 (FIG. 16) and FIG. 10 (FIG. 17). Further, the second discharge port shown in FIG. It can be seen that the pressure loss is equal to or less than the pressure loss of 2.52 Pa of 33. The reason for this will be described below.

図１５は、図１４に示す流れ場の圧力分布（静圧分布）を表す図である。図１５に示すように、冷気は風向転向リブ３８に当たって剥離する。そのため、図８中に破線で囲んだ領域はダクト内の圧力に対して圧力の低い負圧領域となる。したがって、ダクト内部の第１の吐出口３４近傍の流れは下向きの力を受ける。この力によって、図１４に示すよう、冷気はダクト内の流れ方向と逆向きに転向されて吐出される。この風向転向手段、図９あるいは図１０に示す方式のように、流れを部材に衝突させることで転向させるのではないことから、強い縮流は伴わない。よって、図９あるいは図１０に示す方式より圧力損失は小さい。さらに、流れをダクト内流れ方向と逆向きに転向しているにも関わらず、図７，図１３に示す第２の向吐出口３３において生じる圧力損失に対して、同等以下に抑えることができる。   FIG. 15 is a diagram showing the pressure distribution (static pressure distribution) of the flow field shown in FIG. As shown in FIG. 15, the cool air hits the wind direction turning rib 38 and is peeled off. Therefore, a region surrounded by a broken line in FIG. 8 is a negative pressure region whose pressure is lower than the pressure in the duct. Therefore, the flow in the vicinity of the first discharge port 34 inside the duct receives a downward force. With this force, as shown in FIG. 14, the cold air is turned in the direction opposite to the flow direction in the duct and discharged. Since this wind direction turning means, such as the system shown in FIG. 9 or FIG. 10, is not turned by causing the flow to collide with a member, there is no strong contraction. Therefore, the pressure loss is smaller than the method shown in FIG. 9 or FIG. Furthermore, although the flow is turned in the direction opposite to the flow direction in the duct, the pressure loss generated at the second directional discharge port 33 shown in FIGS. .

これは、図７に示す第２の吐出口３３では、流れは図７中に示すａ，ｂ（吐出口の端部）で剥離し、吐出される。ａ−ｂ間寸法、すなわち吐出口開口高さ寸法Ｈ1に応じた縮流（Ｈc）が生じる。図８の第１の吐出口３４では、風向転向リブ３８のために、流れは図８中に示すａ′（風向転向リブ３８のダクト内の端部），ｂで剥離するため、見かけ上、図７に示す吐出口開口高さ寸法Ｈ1より大きい寸法Ｈ1′の開口から吐出することになる。したがって、縮流もａ′とｂの間の距離であるＨ1′に応じて生じるため、縮流はＨc′程度となり、第２の吐出口３３より縮流の度合いが小さい（風速が小さい）。よって、風向転向リブ３８自体による圧力損失の増加分を、縮流の度合いを小さく抑えられる効果が打ち消すことになり、結果として、第２の吐出口３３に比べて、第１の吐出口３４の圧力損失を同等以下に抑えることができる。 In the second discharge port 33 shown in FIG. 7, the flow is separated and discharged at a and b (end portions of the discharge port) shown in FIG. A contracted flow (H c ) corresponding to the dimension between a and b, that is, the discharge opening height dimension H 1 occurs. In the first discharge port 34 of FIG. 8, because of the wind direction turning rib 38, the flow is separated at a ′ (the end portion in the duct of the wind direction turning rib 38) and b shown in FIG. The discharge is made from an opening having a dimension H 1 'larger than the discharge opening height dimension H 1 shown in FIG. Therefore, the contracted flow also occurs according to H 1 ′, which is the distance between a ′ and b. Therefore, the contracted flow is about H c ′, and the degree of contracted flow is smaller than that of the second discharge port 33 (the wind speed is small). ). Therefore, the increase in pressure loss due to the wind direction turning rib 38 itself cancels out the effect of reducing the degree of contraction, and as a result, the first discharge port 34 has a smaller amount than the second discharge port 33. Pressure loss can be suppressed to the same level or less.

以上、第１の吐出口３４を、風向転向リブ３８を設けることによって形成すると、圧力損失を抑えて流れを転向できることを説明した。一方、従来の吐出口には、図１１に示す参考例４のように、吐出口の内側に吐出口補強リブ４２，４２′を設けたものがある。図１１に示すように、従来の吐出口補強リブ４２，４２′は、吐出口の上部と下部に、同等のダクト内への突出長さを有するように設けられている。この場合、上流側の補強リブ４２で剥離した流れが、下向きに押し返されることを、下流側のリブ４２′が遮るたことで逆向に吐出口される。   As described above, it has been described that when the first discharge port 34 is formed by providing the wind direction turning rib 38, the flow can be turned while suppressing the pressure loss. On the other hand, some conventional discharge ports are provided with discharge port reinforcing ribs 42 and 42 'inside the discharge port as in Reference Example 4 shown in FIG. As shown in FIG. 11, the conventional discharge port reinforcing ribs 42 and 42 ′ are provided at the upper and lower portions of the discharge port so as to have a protruding length into the same duct. In this case, the flow separated by the upstream reinforcing rib 42 is discharged downward in the reverse direction because the downstream rib 42 ′ blocks the downward flow.

図１８は、図１１のように従来の吐出口補強リブ４２を備えた吐出口まわりの流れを数値解析（二次元モデル）により可視化したものである。図１１に示す寸法記号において、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mm，Ｌ＝２.５mmとして、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１８に示すように、吐出口からの吐出流れは、ダクト内流れ方向と同じ向きの速度成分を持って吐出されていることがわかる。図１８の解析モデルにおける圧力損失は２.８５Ｐａである。 FIG. 18 shows the flow around the discharge port provided with the conventional discharge port reinforcing rib 42 as shown in FIG. 11 visualized by numerical analysis (two-dimensional model). In the dimension symbols shown in FIG. 11, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, L = 2.5 mm, and a uniform flow with a flow velocity of 0.5 m / s is given to the duct inlet. The field was analyzed. As shown in FIG. 18, it can be seen that the discharge flow from the discharge port is discharged with a velocity component in the same direction as the flow direction in the duct. The pressure loss in the analytical model of FIG. 18 is 2.85 Pa.

一方、図１２は、実施例２における冷蔵庫の第１の吐出口３４の構成を示している。図１２に示すように、実施例２の冷蔵庫の第１の吐出口３４は、下流側（吐出口の上部で、且つダクト内）に高さ寸法がＬ2の吐出口補強リブ４２を備え、上流側（吐出口の下部で、且つダクト内）に高さ寸法がＬ1の風向転向リブ３８を備えている。吐出口補強リブ４２の高さ寸法Ｌ2より風向転向リブ３８の高さ寸法Ｌ1を長くとることによって、上流側の風向転向リブ３８で剥離した流れが下向きに押し返される領域を確保できる。 On the other hand, FIG. 12 shows a configuration of the first discharge port 34 of the refrigerator in the second embodiment. As shown in FIG. 12, the first discharge port 34 of the refrigerator of Example 2 includes a discharge port reinforcing rib 42 having a height dimension of L 2 on the downstream side (on the discharge port and in the duct). A wind direction turning rib 38 having a height dimension L 1 is provided on the upstream side (below the discharge port and in the duct). By taking than the height L 2 of the discharge opening reinforcing ribs 42 extending the height L 1 of the wind direction deflection ribs 38, can be secured area flow peeled wind direction deflection ribs 38 on the upstream side is pushed back downwards.

図１９は、実施例２の冷蔵庫の第１の吐出口３４まわりの流れを数値解析（二次元モデル）により可視化したものである。図１２に示す寸法記号において、Ｗ＝２５mm，Ｈ＝７００mm，Ｈ1＝１０mm，Ｈ2＝１０mm，Ｌ1＝１０mm，Ｌ2＝２.５mmとして、ダクト入口に流速０.５ｍ／ｓの一様流を与えて流れ場を解析した。図１９に示すように吐出口からの吐出流れは、風向転向リブ３８によって転向されている。図１９の解析モデルにおける圧力損失は２.５４Ｐａであり、図１８に示す従来の吐出口補強リブ４２を備えた第２の吐出口３３における圧力損失２.８５Ｐａに比べて、圧力損失が同等以下になっていることがわかる。また、図１３に示す補強リブを備えない第２の吐出口３３の圧力損失２.５２Ｐａと比較しても、同等の圧力損失となっており、風向転向リブ３４によって第１の吐出口３４を形成することで、圧力損失の増加を抑えて流れをダクト内流れ方向と逆向きに転向できることがわかる。図１１に示す従来の吐出口補強リブ４２を備えた吐出口では、図１１中に示すａ，ｂで流れが剥離して吐出される。これに対して、図１２に示す実施例２の第１の吐出口３４では、図１２中に示すａ′，ｂで流れが剥離して吐出されるので、図１１に示す吐出口開口高さ寸法Ｈ1より大きい寸法Ｈ1′（ａ′とｂの間の距離）の開口から吐出することになり縮流が抑えられる。 FIG. 19 is a visualization of the flow around the first outlet 34 of the refrigerator of Example 2 by numerical analysis (two-dimensional model). In the dimension symbols shown in FIG. 12, W = 25 mm, H = 700 mm, H 1 = 10 mm, H 2 = 10 mm, L 1 = 10 mm, L 2 = 2.5 mm, and a flow rate of 0.5 m / s at the duct inlet. The flow field was analyzed by giving a flow. As shown in FIG. 19, the discharge flow from the discharge port is turned by the wind direction turning rib 38. The pressure loss in the analysis model of FIG. 19 is 2.54 Pa, and the pressure loss is equal to or less than the pressure loss of 2.85 Pa in the second discharge port 33 provided with the conventional discharge port reinforcing rib 42 shown in FIG. You can see that Further, even when compared with the pressure loss 2.52 Pa of the second discharge port 33 not provided with the reinforcing rib shown in FIG. 13, the pressure loss is equivalent, and the first discharge port 34 is blocked by the wind direction turning rib 34. By forming, it can be seen that the flow can be turned in the direction opposite to the flow direction in the duct while suppressing an increase in pressure loss. In the discharge port provided with the conventional discharge port reinforcing rib 42 shown in FIG. 11, the flow is separated and discharged at a and b shown in FIG. On the other hand, in the first discharge port 34 of the second embodiment shown in FIG. 12, the flow is separated and discharged at a ′ and b shown in FIG. 12, so the discharge port opening height shown in FIG. contraction will be ejected from the opening of dimension H 1 is greater than the dimension H 1 '(distance between a' and b) is suppressed.

尚、第１の吐出口３４を風向転向リブ３８を設けることによって形成すると、圧力損失を抑えて流れを転向できることを説明したが、図８あるいは図１２に示す風向転向リブ３８の長さ寸法Ｌ1を大きくとりすぎると、風向転向リブ３８を設けることによる圧力損失の増加が顕著になる。これは、風向転向リブ３８により図８及び図１２中に示す寸法Ａ（＝Ｗ−Ｌ1）が小さくなるため、この領域を通過する風速が大きくなり、結果として圧力損失が大きくなる。したがって、第１の吐出口３４の吐出開口高さ寸法Ｈ1における平均風速よりも、Ａにおける平均風速が大きくならないように配慮する必要がある。すなわち、損失の増加を極力抑えて第１の吐出口を形成するためには、Ｈ1＜Ａとする必要がある。本実施例の冷蔵庫の第１の吐出口３４では、Ｈ1＝１０mm，Ａ（＝Ｗ−Ｌ1）＝１５mmでありＨ1＜Ａを満足している。 Although it has been described that when the first discharge port 34 is formed by providing the wind direction turning rib 38, the flow can be turned with the pressure loss suppressed, the length dimension L of the wind direction turning rib 38 shown in FIG. 8 or FIG. If 1 is set too large, an increase in pressure loss due to the provision of the wind direction turning rib 38 becomes remarkable. This is because the wind direction turning rib 38 reduces the dimension A (= W−L 1 ) shown in FIGS. 8 and 12, so that the wind speed passing through this region increases, resulting in an increase in pressure loss. Therefore, it is necessary to consider that the average wind speed at A is not larger than the average wind speed at the discharge opening height dimension H 1 of the first discharge port 34. That is, in order to suppress the increase in loss as much as possible and form the first discharge port, it is necessary to satisfy H 1 <A. In the first discharge port 34 of the refrigerator of the present embodiment, H 1 = 10 mm, A (= W−L 1 ) = 15 mm, and H 1 <A is satisfied.

以上のように、本発明の実施例の冷蔵庫は、冷蔵室送風ダクト１１に第２の吐出口３３と第１の吐出口３４を備えている。これにより、冷蔵室送風ダクト１１から遠い扉ポケット３２に収納された食品と、冷蔵室送風ダクト１１から近い棚３６の上に設置された食品の両方を素早く冷却することができるので、使い勝手を向上することができる。さらに、食品が設置できない冷蔵室天井面２ａや、冷蔵庫２ｃ等を過剰に冷却することが抑えられ、省エネ性に優れた冷蔵庫となる。   As described above, the refrigerator according to the embodiment of the present invention includes the second discharge port 33 and the first discharge port 34 in the refrigerator compartment air duct 11. Thereby, since both the food stored in the door pocket 32 far from the refrigerator compartment air duct 11 and the food installed on the shelf 36 near the refrigerator compartment air duct 11 can be quickly cooled, the usability is improved. can do. Furthermore, excessive cooling of the refrigerator compartment ceiling surface 2a where the food cannot be installed, the refrigerator 2c, and the like can be suppressed, and the refrigerator has excellent energy saving performance.

また、最上段の棚３６Ａ，冷蔵室背面２ｄ，側面２ｃにて区画形成された上の収納スペース（スペース１）に冷気を吐出する吐出口として、第２の吐出口３３ａと第１の吐出口３４ａの両方を備えている。これにより、最上段の扉ポケット３２に収納された食品３０と最上段の棚３６上に設置された食品３７をともに素早く冷却できる。   The second discharge port 33a and the first discharge port serve as discharge ports for discharging cool air to the upper storage space (space 1) defined by the uppermost shelf 36A, the refrigerator back surface 2d, and the side surface 2c. 34a is provided. Thereby, both the food 30 stored in the uppermost door pocket 32 and the food 37 installed on the uppermost shelf 36 can be quickly cooled.

また、最上段の棚３６Ａの上の収納スペース（スペース１）に冷気を吐出する吐出口として、第２の吐出口３３ａと第１の吐出口３４ａの両方を備えており、このうち、第２の吐出口３３は、冷蔵室天井面２ｂの上方に基板３１が設置されている領域の中心付近には直接吐出されない。これにより、基板３１の影響による熱損失を抑えることができ、省エネ性に優れた冷蔵庫となる。   Moreover, both the 2nd discharge port 33a and the 1st discharge port 34a are provided as a discharge port which discharges cool air to the storage space (space 1) on the uppermost shelf 36A. The discharge port 33 is not directly discharged near the center of the area where the substrate 31 is installed above the refrigerator compartment ceiling surface 2b. Thereby, the heat loss by the influence of the board | substrate 31 can be suppressed, and it becomes a refrigerator excellent in energy saving property.

なお、スペース１に限らず、図３のように各棚３６で区画形成されるスペースに対応するように、吐出口３３ａ〜３３ｃが設けられている。これにより、各棚３６によって冷気流れが阻害されるおそれがなく、大容量の冷蔵室の各棚３６に設置した貯蔵物を効率よく冷却できる。したがって、省エネ性に優れた冷蔵庫にできる。   Not only the space 1 but also the discharge ports 33a to 33c are provided so as to correspond to the spaces defined by the shelves 36 as shown in FIG. Thereby, there is no possibility that the flow of cold air is obstructed by each shelf 36, and the stored items installed on each shelf 36 of the large-capacity refrigerator compartment can be efficiently cooled. Therefore, it can be made into a refrigerator excellent in energy saving.

また、単一の冷蔵室送風ダクト１１を冷蔵室背面２ｄの中央付近の略鉛直方向に設けている。これにより、冷蔵室背面２ｄに複数の分岐した送風ダクトを設ける方式に比べて、低温冷気が通るダクト１１が冷蔵室背面２ｄの断熱壁を介して庫外と熱交換することによる熱損失を抑えることができ、省エネ性に優れた冷蔵庫となる。   Moreover, the single refrigerator compartment air duct 11 is provided in the substantially vertical direction near the center of the refrigerator compartment back surface 2d. This suppresses heat loss caused by heat exchange between the duct 11 through which the low-temperature cold air passes through the heat insulating wall of the refrigerator compartment back surface 2d as compared with a method in which a plurality of branched air ducts are provided on the refrigerator compartment back surface 2d. It becomes a refrigerator with excellent energy saving.

本発明の実施例の冷蔵庫は、冷蔵室送風ダクト１１を前方から見た場合、冷気が略左右対称に吐出されるように第２の吐出口３３と第１の吐出口３４が設けられている。これにより、庫内の容積が大きくても冷蔵室２内に均等に冷気を送ることができるため、温度ムラを抑えた冷蔵庫を提供できる。   The refrigerator of the embodiment of the present invention is provided with the second discharge port 33 and the first discharge port 34 so that the cold air is discharged substantially symmetrically when the refrigerator compartment air duct 11 is viewed from the front. . Thereby, even if the volume in a store | warehouse | chamber is large, since cold air can be sent into the refrigerator compartment 2 equally, the refrigerator which suppressed temperature nonuniformity can be provided.

また、冷蔵室背面２ｄにアルミパネル３５を備えている。これにより、冷気が届き難い冷蔵室背面２ｄの近傍の領域の冷却を補助でき、温度ムラを抑えた冷蔵庫を提供することができる。   Moreover, the aluminum panel 35 is provided in the refrigerator compartment back surface 2d. Thereby, the cooling of the area | region of the refrigerator compartment back surface 2d vicinity which cold cannot reach easily can be assisted, and the refrigerator which suppressed the temperature nonuniformity can be provided.

また、第１の吐出口３４を形成する風向転向手段として、第１の吐出口３４の開口位置に対して、上流側、且つ冷蔵室送風ダクト１１の内部に風向転向リブを設けている。これにより、圧力損失の増加を抑えて風向を転向することができるため、所定の風量を送風するためのエネルギを小さくでき、熱損失を低減させて省エネ性に優れた冷蔵庫を提供することができる。   Further, as a wind direction turning means for forming the first discharge port 34, a wind direction turning rib is provided on the upstream side with respect to the opening position of the first discharge port 34 and in the refrigerator compartment air duct 11. Thereby, since an increase in pressure loss can be suppressed and the wind direction can be turned, energy for blowing a predetermined amount of air can be reduced, and heat loss can be reduced to provide a refrigerator excellent in energy saving. .

また、第１の向吐出口３４を形成する風向転向手段として、第１の吐出口３４の開口位置に対して、上流側、且つ冷蔵室送風ダクト１１の内部に風向転向リブを設け、下流側、且つ冷蔵室送風ダクト１１の内部に吐出口補強リブを設けており、風向転向リブの高さ寸法Ｌ1と補強リブの高さ寸法Ｌ2の関係を、Ｌ1＞Ｌ2としている。これにより、吐出口の強度を確保できると同時に、圧力損失の増加を抑えて風向を転向することができるため、熱損失を低減させて省エネ性に優れた冷蔵庫を提供することができる。 Further, as a wind direction turning means for forming the first direction discharge port 34, a wind direction turning rib is provided on the upstream side with respect to the opening position of the first discharge port 34 and in the refrigerator compartment air duct 11. and has established an internal discharge port reinforcing ribs of the refrigerating compartment air duct 11, the wind direction deflection rib height L 1 and the reinforcing rib height dimension L 2 relations, and the L 1> L 2. As a result, the strength of the discharge port can be ensured, and at the same time, an increase in pressure loss can be suppressed and the air direction can be turned. Therefore, a refrigerator with reduced heat loss and excellent energy saving can be provided.

また、第１の吐出口３４を形成する風向転向手段である風向転向リブ３８の高さＬ1と、ダクト行Ｗと、吐出開口高さＨ1の関係を、Ｈ1＜（Ｗ−Ｌ1）としている。これにより、圧力損失の増加を抑えて風向を転向することができるため、所定の風量を送風するためのエネルギを小さくでき、熱損失を低減させて省エネ性に優れた冷蔵庫を提供することができる。 Further, the relationship between the height L 1 of the wind direction turning rib 38 that is the wind direction turning means that forms the first discharge port 34, the duct row W, and the discharge opening height H 1 is expressed as H 1 <(W−L 1 ). Thereby, since an increase in pressure loss can be suppressed and the wind direction can be turned, energy for blowing a predetermined amount of air can be reduced, and heat loss can be reduced to provide a refrigerator excellent in energy saving. .

なお、第１の吐出口３４を形成する手段として、風向転向リブ３８を用いたが、図７及び図１１に示す吐出口（第２の吐出口３３）の、上流側の剥離点（図７及び図１１中に示すａ部）を下流側の剥離点（図７及び図１１中に示すｂ部）に対してダクト内部に移動させる（図８及び図１２のａ′部）ことができる部材であれば良い。例え、別の実施例３の形態として、図２０に示すように、ダクト内に部材４３を設置して、部材４３のエッジ部ａで流れを剥離させる方式としてもよい。   In addition, although the wind direction turning rib 38 was used as a means for forming the first discharge port 34, an upstream peeling point (FIG. 7) of the discharge port (second discharge port 33) shown in FIGS. And the part a) shown in FIG. 11 can be moved inside the duct with respect to the downstream peeling point (b part shown in FIGS. 7 and 11) (a 'part in FIGS. 8 and 12). If it is good. For example, as another embodiment 3, as shown in FIG. 20, a member 43 may be installed in the duct and the flow may be separated at the edge portion a of the member 43.

また、本実施例で示した数値解析では、ダクト内流速を０.５ｍ／ｓとしたが、本発明の作用効果はこの風速に限定されるものではなく、風速を変化させた場合であっても、同様の作用効果を得ることができる。   Further, in the numerical analysis shown in the present embodiment, the flow velocity in the duct is set to 0.5 m / s, but the effect of the present invention is not limited to this wind speed, and is the case where the wind speed is changed. The same effect can be obtained.

本発明の実施例に係る冷蔵庫の正面図。The front view of the refrigerator which concerns on the Example of this invention. 本発明の実施例に係る冷蔵庫の庫内の構成を表す断面図。Sectional drawing showing the structure in the store | warehouse | chamber of the refrigerator which concerns on the Example of this invention. 本発明の実施例に係る冷蔵庫の冷蔵室の扉を開けた状態を正面から見た図。The figure which looked at the state which opened the door of the refrigerator compartment of the refrigerator which concerns on the Example of this invention from the front. 本発明の実施例に係る第２の吐出口から吐出する冷気の流れを表す図。The figure showing the flow of the cool air discharged from the 2nd discharge outlet which concerns on the Example of this invention. 本発明の実施例に係る第１の吐出口から吐出する冷気の流れを表す図。The figure showing the flow of the cool air discharged from the 1st discharge outlet which concerns on the Example of this invention. 本発明の実施例に係る冷蔵庫の冷蔵室の最上段冷却スペースを上方から見た図。The figure which looked at the uppermost cooling space of the refrigerator compartment of the refrigerator which concerns on the Example of this invention from the upper direction. 吐出口を表す参考例１の図。The figure of the reference example 1 showing a discharge outlet. 風向転向リブを備えた第１の吐出口を表す実施例１の図。The figure of Example 1 showing the 1st discharge port provided with the wind direction turning rib. 曲げ風路を備えた第１の吐出口を表す参考例２の図。The figure of the reference example 2 showing the 1st discharge port provided with the bending air path. 吐出口外部に傾斜部材を備えた第１の吐出口を表す参考例３の図。The figure of the reference example 3 showing the 1st discharge port provided with the inclination member outside a discharge port. 従来の補強リブつき吐出口を表す参考例４の図。The figure of the reference example 4 showing the discharge port with the conventional reinforcement rib. 補強リブ及び風向転向リブを備えた第１の吐出口を表す実施例１の図。The figure of Example 1 showing the 1st discharge port provided with the reinforcement rib and the wind direction turning rib. 従来の吐出口近傍の流れを表す参考例１の図。The figure of the reference example 1 showing the flow of the conventional discharge outlet vicinity. 風向転向リブを備えた第１の吐出口近傍の流れを表す実施例１の図。The figure of Example 1 showing the flow of the 1st discharge port vicinity provided with the wind direction turning rib. 風向転向リブを備えた第１の吐出口近傍の圧力分布を表す実施例２の図。The figure of Example 2 showing the pressure distribution of the 1st discharge port vicinity provided with the wind direction turning rib. 曲げ風路を備えた第１の吐出口近傍の流れを表す参考例２の図。The figure of the reference example 2 showing the flow of the 1st discharge port vicinity provided with the bending air path. 吐出口外部に傾斜部材を備えた第１の吐出口近傍の流れを表す参考例３の図。The figure of the reference example 3 showing the flow of the 1st discharge port vicinity provided with the inclination member outside the discharge port. 従来の補強リブつき吐出口近傍の流れを表す図。The figure showing the flow of the discharge port vicinity with the conventional reinforcement rib. 補強リブ及び風向転向リブを備えた第１の吐出口近傍の流れを表す図。The figure showing the flow of the 1st discharge port vicinity provided with the reinforcement rib and the wind direction turning rib. 本発明の実施例に係る第１の吐出口の別の方式を表す実施例３の図。The figure of Example 3 showing another system of the 1st discharge outlet concerning the Example of this invention.

符号の説明Explanation of symbols

１ 冷蔵庫本体
２ 冷蔵室
２ａ 冷蔵室扉
２ｂ 冷蔵室天井面
２ｃ 冷蔵室側面
２ｄ 冷蔵室背面
３ 製氷室
３ａ 製氷室扉
４ 上段冷凍室
４ａ 上段冷凍室扉
４ｂ 上段冷凍室収納容器
５ 下段冷凍室
５ａ 下段冷凍室扉
５ｂ 下段冷凍室収納容器
６ 野菜室
６ａ 野菜室扉
６ｂ 野菜室収納容器
７ 冷却器
８ 冷却器収納室
９ 庫内送風ファン
１０ 断熱箱体
１１ 冷蔵室送風ダクト
１２ 上段冷凍室送風ダクト
１３ 下段冷凍室送風ダクト
２０ ダンパ
２１ 蒸発皿
２２ 除霜ヒータ
２３ 樋
２４ 圧縮機
２５ 真空断熱材
２７ 排水管
２８，２９ 断熱仕切壁
３０，３７ 食品
３１ 基板
３２ 扉ポケット
３３ 第２の吐出口
３４ 第１の吐出口
３６ 棚
３８ 風向転向リブ
３９，４０，４３ 部材
４１ 曲げ風路
４２ 補強リブ DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Refrigeration room 2a Refrigeration room door 2b Refrigeration room ceiling surface 2c Refrigeration room side 2d Refrigeration room back 3 Ice making room 3a Ice making room door 4 Upper freezing room 4a Upper freezing room door 4b Upper freezing room storage container 5 Lower freezing room 5a Lower freezer compartment door 5b Lower freezer compartment storage container 6 Vegetable room 6a Vegetable room door 6b Vegetable room storage container 7 Cooler 8 Cooler storage room 9 Blower fan 10 Insulation box 11 Refrigerating room air duct 12 Upper freezer compartment air duct 13 Lower-stage freezer compartment air duct 20 Damper 21 Evaporating dish 22 Defrost heater 23 樋 24 Compressor 25 Vacuum heat insulating material 27 Drain pipes 28, 29 Heat insulating partition walls 30, 37 Food 31 Substrate 32 Door pocket 33 Second discharge port 34 1 discharge port 36 shelf 38 wind direction turning ribs 39, 40, 43 member 41 bending air passage 42 reinforcing rib

Claims (15)

断熱箱体に形成された貯蔵室と、
前記貯蔵室の気体を冷却する冷却手段と、
前記冷却手段で冷却された気体を前記貯蔵室に送る送風手段と、
前記送風手段で送られた気体が流れるダクトと、
前記ダクトに設けられて、前記送風手段で送られた気体を前記貯蔵室に吹き出す第一の吐出口を有し、該第一の吐出口の上部は平面であって、該第一の吐出口の下部に前記ダクト内に向けて設けられた突部と、を備えたことを特徴とする冷蔵庫。 A storage room formed in an insulated box;
Cooling means for cooling the gas in the storage chamber;
A blowing means for sending the gas cooled by the cooling means to the storage chamber;
A duct through which the gas sent by the blowing means flows;
A first discharge port provided in the duct for blowing the gas sent by the blower to the storage chamber, wherein the upper portion of the first discharge port is a flat surface, and the first discharge port And a protrusion provided in the lower part of the duct toward the inside of the duct. 断熱箱体内に形成された貯蔵室と、
前記貯蔵室の気体を冷却する冷却手段と、
前記冷却手段で冷却された気体を前記貯蔵室に送る送風手段と、
前記送風手段で送られた気体が流れるダクトと、
前記ダクトに設けられて、前記送風手段で送られた気体を前記貯蔵室に吹き出す第一の吐出口を有し、該第一の吐出口の上部及び下部には前記ダクト内に向けて突部が設けられており、前記上部の突部よりも前記下部の突部は長いことを特徴とする冷蔵庫。 A storage chamber formed in the insulated box;
Cooling means for cooling the gas in the storage chamber;
A blowing means for sending the gas cooled by the cooling means to the storage chamber;
A duct through which the gas sent by the blowing means flows;
A first discharge port provided in the duct for blowing out the gas sent by the blower to the storage chamber; and a protrusion toward the inside of the duct at an upper portion and a lower portion of the first discharge port The refrigerator is characterized in that the lower protrusion is longer than the upper protrusion. 請求項１または２において、前記ダクトは略鉛直方向に設けられていることを特徴とする冷蔵庫。   3. The refrigerator according to claim 1, wherein the duct is provided in a substantially vertical direction. 請求項１または２において、前記第一の吐出口は冷蔵庫本体の正面からみて上下方向よりも左右方向に長いことを特徴とする冷蔵庫。   3. The refrigerator according to claim 1, wherein the first discharge port is longer in the left-right direction than in the up-down direction when viewed from the front of the refrigerator main body. 請求項１または２において、前記突部は前記ダクト内に略水平に設けられたことを特徴とする冷蔵庫。   The refrigerator according to claim 1 or 2, wherein the protrusion is provided substantially horizontally in the duct. 請求項１乃至５のいずれかにおいて、冷蔵庫本体の正面からみて前記第一の吐出口の両側に第二の吐出口が設けられたことを特徴とする冷蔵庫。   6. The refrigerator according to claim 1, wherein second discharge ports are provided on both sides of the first discharge port as viewed from the front of the refrigerator main body. 請求項１において、前記吐出口の上端部から前記突部の先端部までの長さは、前記吐出口の開口高さよりも長いことを特徴とする冷蔵庫。   The refrigerator according to claim 1, wherein a length from an upper end portion of the discharge port to a tip end portion of the protrusion is longer than an opening height of the discharge port. 請求項２において、前記上部の突部の先端部から前記下部の突部の先端部までの長さは、前記吐出口の開口高さよりも長いことを特徴とする冷蔵庫。   3. The refrigerator according to claim 2, wherein a length from the tip of the upper protrusion to the tip of the lower protrusion is longer than the opening height of the discharge port. 断熱箱体内に形成された貯蔵室と、
前記貯蔵室内の気体を冷却する冷却器と、
前記冷却器で冷却された気体を前記貯蔵室に送る送風ファンと、
前記送風ファンの上方に設けられ、前記送風ファンで送られた気体が流れる略鉛直方向のダクトと、
前記貯蔵室内に設置された貯蔵棚と、
前記貯蔵室を開閉可能な貯蔵室扉と、
前記貯蔵室扉の背面に設けられた扉ポケットと、を備えた冷蔵庫において、
前記ダクトに設けられ、前記送風ファンで送られた気体を前記貯蔵室内に吹き出す第一の吐出口を有し、該第一の吐出口の上部は平面であり、該第一の吐出口の下部であって、かつ前記ダクト内に設けられて、前記貯蔵室に吹き出す気体が前記貯蔵棚の上面に直接向かうように偏向する突部と、を備えたことを特徴とする冷蔵庫。 A storage chamber formed in the insulated box;
A cooler for cooling the gas in the storage chamber;
A blower fan that sends the gas cooled by the cooler to the storage chamber;
A substantially vertical duct provided above the blower fan and through which the gas sent by the blower fan flows;
A storage shelf installed in the storage chamber;
A storage room door capable of opening and closing the storage room;
In a refrigerator provided with a door pocket provided on the back of the storage room door,
A first discharge port provided in the duct for blowing the gas sent by the blower fan into the storage chamber, wherein the upper portion of the first discharge port is a flat surface, and the lower portion of the first discharge port; And the protrusion provided in the said duct, and the deflection | deviation which deflect | deviates so that the gas which blows off to the said storage chamber goes directly to the upper surface of the said storage shelf, The refrigerator characterized by the above-mentioned. 断熱箱体内に形成された貯蔵室と、
前記貯蔵室内の気体を冷却する冷却器と、
前記冷却器で冷却された気体を前記貯蔵室に送る送風ファンと、
前記送風ファンの上方に設けられ、前記送風ファンで送られた気体が流れる略鉛直方向のダクトと、
前記貯蔵室内に設置された貯蔵棚と、
前記貯蔵室を開閉可能な貯蔵室扉と、
前記貯蔵室扉の背面に設けられた扉ポケットと、を備えた冷蔵庫において、
前記ダクトに設けられ、前記送風ファンで送られた気体を前記貯蔵室内に吹き出す第一の吐出口を有し、該第一の吐出口の上部及び下部には前記ダクト内に向けて突部が設けられており、前記貯蔵室に吹き出す気体が前記貯蔵棚の上面に直接向かうように前記突部は上部よりも下部が長いことを特徴とする冷蔵庫。 A storage chamber formed in the insulated box;
A cooler for cooling the gas in the storage chamber;
A blower fan that sends the gas cooled by the cooler to the storage chamber;
A substantially vertical duct provided above the blower fan and through which the gas sent by the blower fan flows;
A storage shelf installed in the storage chamber;
A storage room door capable of opening and closing the storage room;
In a refrigerator provided with a door pocket provided on the back of the storage room door,
A first discharge port is provided in the duct and blows out the gas sent by the blower fan into the storage chamber. Projections are provided at the upper and lower portions of the first discharge port toward the duct. The refrigerator, wherein the protrusion is longer at the lower part than at the upper part so that the gas blown into the storage room is directed directly to the upper surface of the storage shelf. 請求項９又は１０において、前記第一の吐出口の両側に設けられ、前記送風ファンで送られた気体を前記扉ポケットに直接向かうように吹き出す第二の吐出口を有することを特徴とする冷蔵庫。   11. The refrigerator according to claim 9, further comprising a second discharge port that is provided on both sides of the first discharge port and blows out the gas sent by the blower fan directly toward the door pocket. . 請求項９乃至１１のいずれかにおいて、前記貯蔵室内に設置された複数の貯蔵棚を有し、前記最も上方の貯蔵棚よりも前記扉ポケットの開口が上方に位置し、前記第一の吐出口及び前記第二の吐出口は前記扉ポケットの開口よりも上方に位置することを特徴とする冷蔵庫。   The first discharge port according to any one of claims 9 to 11, further comprising a plurality of storage shelves installed in the storage chamber, wherein the opening of the door pocket is located above the uppermost storage shelf. And the said 2nd discharge outlet is located above the opening of the said door pocket, The refrigerator characterized by the above-mentioned. 請求項９乃至１１のいずれかにおいて、前記冷蔵室の背面の少なくとも一部を高熱伝導部材としたことを特徴とする冷蔵庫。   The refrigerator according to any one of claims 9 to 11, wherein at least a part of a back surface of the refrigerator compartment is a high heat conduction member. 請求項１３において、前記ダクトは前記貯蔵室の背面の中央付近に配置され、前記高熱伝導部材は前記ダクトの両側に設けられることを特徴とする冷蔵庫。   14. The refrigerator according to claim 13, wherein the duct is disposed in the vicinity of the center of the back surface of the storage room, and the high heat conductive member is provided on both sides of the duct. 請求項８において、前記ダクトの左右に略対称に前記第二の吐出口を備えたことを特徴とする冷蔵庫。   The refrigerator according to claim 8, wherein the second discharge port is provided substantially symmetrically on the left and right of the duct.
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