JPS5844313Y2 - cooling box body - Google Patents

Description

【考案の詳細な説明】 本案は開口部に開閉自在な蓋体を設けた冷却箱体に関し
、その目的とする処は、蓋体表面の結露を防止するとと
もに、この蓋体にて庫内の冷却効果の向上を図ることに
ある。[Detailed description of the invention] This invention relates to a cooling box with a lid that can be opened and closed at its opening. The purpose is to improve the cooling effect.

従来この種の冷却箱体は庫内の開口に、箱形合成樹脂体
の内部に断熱材を充填した蓋体、若しくは庫内側合成樹
脂板体と庫外側金属板体とこの両板体間に充填された断
熱材とよりなる蓋体を開閉自在に設けていた。Conventionally, this type of cooling box body has a lid body filled with a heat insulating material inside a box-shaped synthetic resin body, or a synthetic resin plate body on the inside side of the refrigerator body, a metal plate body on the outside side of the refrigerator body, and a lid body between the two plates. A lid made of filled insulation material was provided so that it could be opened and closed.

前者の蓋体は庫内外面とも合成樹脂で形成されており、
一般に合成樹脂は熱伝導率が小さく熱放射（輻射ともい
う）率が大きい性質を有している。The lid of the former is made of synthetic resin on both the inside and outside of the refrigerator.
In general, synthetic resins have low thermal conductivity and high thermal radiation (also referred to as radiation) rate.

この蓋体は放射率が大きいので蓋体表面は冷却箱体を包
囲する静止空気の温度より少し低い温度となる。Since this lid has a high emissivity, the surface of the lid has a temperature slightly lower than the temperature of the still air surrounding the cooling box.

これは蓋体裏面及び断熱材を介して庫内の熱が蓋体表面
に伝わるために生じる低下であり、この低下した温度差
が大ければ大きい程蓋体表面における露点温度が低下し
て霜付が生じ易くなる。This decrease occurs because the heat inside the refrigerator is transferred to the lid surface via the back surface of the lid and the insulation material, and the larger the difference in temperature, the lower the dew point temperature on the lid surface and frost. It becomes easy to cause sticking.

又、後者の蓋体は裏面を合成樹脂、表面を金属板で形成
されており、合成樹脂は上述した性質を有しているが、
金属板は熱伝導率が大きく熱放射率が小さい性質を有し
ている。In addition, the latter lid body is made of synthetic resin on the back side and a metal plate on the front side, and although the synthetic resin has the above-mentioned properties,
Metal plates have high thermal conductivity and low thermal emissivity.

この蓋体の表面は熱放射率が小さいので冷却箱体を包囲
する静止空気の温度より常に低い温度となり、蓋体裏面
及び断熱材を介して庫内の熱が表面に伝わり、前者の蓋
体より更に低い露点温度となり霜付が生じる。Since the surface of this lid has a low thermal emissivity, the temperature is always lower than the temperature of the still air surrounding the cooling box, and the heat inside the refrigerator is transmitted to the surface through the back of the lid and the insulation material, and the former lid The dew point temperature becomes even lower and frosting occurs.

このような霜付は蓋体表面温度と、冷却箱体を包囲する
静止空気温度と、相対湿度との関係により生じ、蓋体表
面の露が氷結して蓋体の開閉ができなくなる等の事故が
発生していた。This kind of frosting occurs due to the relationship between the surface temperature of the lid, the temperature of the still air surrounding the cooling box, and the relative humidity, and may cause accidents such as dew on the lid surface freezing and making it impossible to open or close the lid. was occurring.

本案は上記の欠点に鑑みてなされたものであり、以下第
１図によりその実施例を説明すると、１は内箱２と外箱
３とこの両箱間に充填された発泡性断熱材４とにより構
成される冷却箱体で、前記内箱の外面に設けた冷却管６
で熱交換された冷気の自然対流により庫内５を冷却する
ものであり、段１６ ａ 、１６ ｂ付きの化粧枠１６
によって画成される開ロアより商品の収納及び取出しを
行なうものである。This proposal was made in view of the above-mentioned drawbacks, and an example thereof will be explained below with reference to FIG. A cooling box body constituted by a cooling pipe 6 provided on the outer surface of the inner box.
The interior 5 of the refrigerator is cooled by natural convection of cold air heat exchanged with the decorative frame 16 with stages 16a and 16b.
Products are stored and taken out from the open lower part defined by the opening lower part.

８は前記開口を開閉自在に閉塞する蓋体で、放射率の小
なる材質のアルミニウム等からなる庫内側板体１０と、
放射率の大なる材質の箱形合成樹脂等の内部に断熱材１
５を充填した摺動自在な二枚の庫内側板体１１．１１’
とからなり、この画板体間に空気層１２を形成するよう
両板体は化粧枠１６の段１６ ａ 、１６ ｂに載置さ
れる。Reference numeral 8 denotes a lid body that closes the opening so as to open and close the opening, and a chamber side plate body 10 made of a material such as aluminum having a low emissivity;
Insulating material 1 inside the box-shaped synthetic resin etc. made of material with high emissivity.
Two slidable chamber inner plates 11 and 11' filled with 5.
The drawing board bodies are placed on steps 16 a and 16 b of the decorative frame 16 so as to form an air layer 12 between the drawing board bodies.

斯かる構成によれば、庫内側板体１０は開口端面即ち化
粧枠１６の表面よりも庫内側に入り込んで配設されてい
るため、庫内５の冷却容積を小さくできるとともに、冷
気の影響を受けて低温となるが、板体自身放射率の小さ
いものであるから放射により伝わる熱量は無視できる程
僅少であり、放射による熱伝達は無視でき、放射冷却を
受けることがない。According to this configuration, the inside plate 10 is disposed deeper into the inside of the refrigerator than the opening end surface, that is, the surface of the decorative frame 16, so that the cooling volume of the inside 5 can be reduced and the influence of cold air can be reduced. However, since the plate itself has a low emissivity, the amount of heat transferred by radiation is negligible, so the heat transfer by radiation can be ignored, and there is no radiation cooling.

又庫外側板体１１．１１’は放射率の大きなものである
から、周囲からの放射熱を受けて常温物体からの赤外線
など冷却箱体１を包囲する静止空気と略同に温度に保た
れる。In addition, since the outside panels 11 and 11' have a high emissivity, they receive radiant heat from the surroundings and are kept at approximately the same temperature as the still air surrounding the cooling box body 1, including infrared rays from objects at room temperature. It will be done.

従って、庫内側板体１０から放射される熱は僅かで、庫
外側板体１１．１１’に伝達されず、又庫外側板体１１
．１１’から放射される熱は庫内側板体１０により殆ん
ど反射されるため、画板体１０，１１．１１’間相互の
熱伝達を無視できる程少なくでき、蓋体８表面は常温物
体と略同じ温度に維持され、結露の発生は生じない。Therefore, the heat radiated from the inner side plate 10 is small and is not transmitted to the outer side plate 11.11'.
．． Since most of the heat radiated from the inside plate 11 is reflected by the inside plate 10, the heat transfer between the drawing plates 10, 11 and 11' can be reduced to a negligible level, and the surface of the lid 8 is not a normal temperature object. The temperature is maintained at approximately the same level and no condensation occurs.

以上述べた如く本案は、熱放射率の小なる材質の庫内側
板体と、熱放射率の大なる材質の庫外側板体とからなる
蓋体を、庫内側板体が開口端面より庫内側に位置するよ
う開口部に開閉自在に設けたことを特徴とするものであ
るから、庫内側板体により庫内の冷気対流容積を少なく
するとともに、放射冷却をなくして庫内の冷却効果の向
上を図ることができ、又庫内外画板体の相互の熱伝達を
無視できる程小さくシ、庫外側板体を常温物体と略同じ
温度に維持して蓋体表面の結露防止が図れる。As described above, the present invention is designed to provide a lid body consisting of a refrigerator inner plate made of a material with a small thermal emissivity and a refrigerator outer plate made of a material with a large thermal emissivity. Since the opening is located at the opening that can be opened and closed, the inside plate reduces the cold air convection volume inside the refrigerator and eliminates radiation cooling, improving the cooling effect inside the refrigerator. In addition, mutual heat transfer between the inside and outside of the refrigerator is negligible, and the outside panel of the refrigerator is maintained at approximately the same temperature as the room-temperature object, thereby preventing dew condensation on the surface of the lid.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本案冷却箱体の要部分解斜視図、第２図は同要
部縦断面図である。 ５・・・・・・庫内、７・・・・・・開口、８・・・・
・・蓋体、１０・・・・・・庫内側板体、１１．１１′
・・・・・・庫外側板体。FIG. 1 is an exploded perspective view of a main part of the cooling box according to the present invention, and FIG. 2 is a longitudinal sectional view of the main part. 5... Inside the refrigerator, 7... Opening, 8...
...Lid body, 10...Inside plate body, 11.11'
・・・・・・Outside panel of refrigerator.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 熱放射率の小なる材質の庫内側板体と、熱放射率の大な
る材質の庫外側板体とからなる蓋体を、庫内側板体が開
口端面より庫内側に位置するよう開口部に開閉自在に設
けたことを特徴とする冷却箱体。A lid body consisting of a refrigerator side plate made of a material with a small thermal emissivity and a refrigerator side plate made of a material with a large thermal emissivity is attached to the opening so that the refrigerator side plate is located on the inside of the refrigerator from the opening end surface. A cooling box body characterized by being provided so that it can be opened and closed freely.