JPH07332833A - Cold air circulation structure of refrigeration apparatus - Google Patents
Cold air circulation structure of refrigeration apparatusInfo
- Publication number
- JPH07332833A JPH07332833A JP12399294A JP12399294A JPH07332833A JP H07332833 A JPH07332833 A JP H07332833A JP 12399294 A JP12399294 A JP 12399294A JP 12399294 A JP12399294 A JP 12399294A JP H07332833 A JPH07332833 A JP H07332833A
- Authority
- JP
- Japan
- Prior art keywords
- cooler
- air
- cold air
- ceiling
- return passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Removal Of Water From Condensation And Defrosting (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、冷蔵装置に関し、食料
品等を冷蔵状態で保存する冷蔵庫や、冷蔵状態で陳列す
るために使用される冷蔵ショーケースのような冷蔵装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus, and more particularly to a refrigerator for storing foods and the like in a refrigerating state, and a refrigerating apparatus such as a refrigerating showcase used for displaying in a refrigerated state.
【0002】[0002]
【従来の技術】例えば、冷蔵ショーケースにおいては、
生鮮食料品等を冷蔵状態で陳列し、鮮度の維持に留意し
ている。このような冷蔵ショーケースにおいて、冷蔵陳
列室内の空気を自然対流により循環させて室内全域を冷
却する方式が採られる場合、冷却器(冷媒の蒸発器)
が、天井部又は天板の下面に垂下保持され、冷気を垂直
下方へ流すのが一般的である。しかして、冷却器は、周
囲の空気に比しかなり低温となり、氷点下の温度にもし
ばしばなるので、冷却器には、空気中の湿分が露となり
又は霜となって付着する。2. Description of the Related Art For example, in a refrigerated showcase,
Fresh foods are displayed in a refrigerated state, and attention is paid to maintaining their freshness. In such a refrigerating showcase, when a method of circulating the air in the refrigerating display room by natural convection to cool the entire room, a cooler (refrigerant evaporator) is used.
However, it is generally held by being suspended from the ceiling or the lower surface of the top plate, and the cold air is generally flowed vertically downward. Thus, the cooler becomes considerably colder than the surrounding air and often has a sub-zero temperature, so that moisture in the air adheres to the cooler as dew or frost.
【0003】この付着した露等は、冷蔵陳列室内の状況
に応じて落下するが、露の落下は、冷蔵食品の品質保持
上一般に好ましくないので、露等の冷蔵品上への落下を
防止する露受板や露受皿等を設けることが必要である。
即ち、冷却器からの冷気の下降を許容促進する一方、露
の滴下を防止することが望まれており、これに応じて種
々の提案が行われている。例えば、実開昭51−318
68号公報においては、断面が“へ”形の露受板を多数
水平方向に間隔をおいて配列横架し、その下端折曲縁を
露受皿に接するような露受装置が提案されている。この
装置においては、冷気は露受板相互間の隙間を通って下
降する一方、露滴は、露受板上に落下した後その下端折
曲縁に集合し、露受皿に案内されて排出される。又、実
開平2−120690号公報においては、冷却器の下方
に設けた露受皿の通気孔に、通気非透水性フィルムを張
り、これにより冷気の下降と露滴の落下防止とを図って
いる。The attached dew drops according to the conditions in the refrigerating display room. Since the dew drop is generally unfavorable for maintaining the quality of refrigerated foods, the dew is prevented from falling onto refrigerated items. It is necessary to provide a dew receiving plate and a dew receiving tray.
In other words, it is desired to prevent the drip of dew while allowing the descent of the cool air from the cooler to be permitted, and various proposals have been made in response to this. For example, Jitsukai 51-318
In Japanese Patent Laid-Open No. 68, there is proposed a dew receiving device in which a large number of dew receiving plates each having a cross section of a "he" shape are horizontally arranged at intervals in the horizontal direction, and the lower bent edges of the dew receiving plates are in contact with the dew receiving tray. . In this device, the cool air descends through the gap between the dew receiving plates, while the dew drops fall on the dew receiving plates and then collect at the lower bent edge of the dew receiving plates, and are guided and discharged to the dew receiving tray. It In Japanese Utility Model Application Laid-Open No. 2-120690, a ventilation impermeable film is attached to a ventilation hole of a dew tray provided below a cooler to prevent cool air from falling and prevent dew drops from falling. .
【0004】[0004]
【発明が解決しようとする課題】前記した従来の提案の
内、実開昭51−31868号公報のものにおいては、
冷気の下降と露の落下防止については、一応の目的は達
成されるものの、冷蔵陳列室内の空気の循環を積極的に
促進し、冷却器における熱交換を効率的に行うという配
慮に欠けていた。即ち、冷却器において空気を冷却し、
この冷気が下方へ流れれば、冷却すべき相対的に温度の
高い空気は、自然に冷却器の周辺に入りこむとし、これ
を単に期待する設計だったのである。したがって、冷気
循環が十分行われず、冷却効率が悪く、冷蔵陳列室内に
温度むらが発生することがあった。Among the above-mentioned conventional proposals, the one disclosed in Japanese Utility Model Application Laid-Open No. 51-31868 discloses:
Regarding the fall of cold air and the prevention of fall of dew, although a tentative purpose was achieved, there was a lack of consideration to actively promote the circulation of air in the refrigerating display room and efficiently perform heat exchange in the cooler. . That is, cooling the air in the cooler,
If this cold air flows downward, the relatively hot air to be cooled will naturally enter the periphery of the cooler, and the design was simply expected. Therefore, the cold air is not sufficiently circulated, the cooling efficiency is poor, and temperature unevenness may occur in the refrigerated display room.
【0005】又、実開平2−120690号公報のもの
においても、通気非透水性フィルムを使用するので、一
応、冷気の透過、下降を許容するのであるが、物理的に
は、フィルムが通気孔を塞いでいるので、抵抗も大きく
冷気の速い下降を妨げるおそれがあった。更に、相対的
に高い温度の空気を上方へ導く空気循環路が明確に形成
されていないので、冷却器において十分な熱交換が行わ
れず、冷却効率が悪く、室内に温度むらが生ずるという
問題があった。本発明は、このような事情を考慮してな
されたもので、冷蔵陳列室内に、その特性に応じて空気
の自然循環が低抵抗で効率的に行われる自然循環流路が
形成されると共に、冷却器からの露が、陳列室上に滴下
することがない冷蔵装置の冷気循環構造を提供すること
を目的とするものである。In Japanese Utility Model Laid-Open No. 2-120690, since a breathable water-impermeable film is used, it is possible to allow cold air to permeate and descend, but physically, the film has a vent hole. Since it is blocking the air, there was a great resistance and there was a risk of hindering the rapid lowering of cold air. Furthermore, since the air circulation path that guides the air of a relatively high temperature upward is not clearly formed, sufficient heat exchange is not performed in the cooler, the cooling efficiency is poor, and temperature unevenness occurs in the room. there were. The present invention has been made in consideration of such circumstances, and in the refrigerating display room, a natural circulation flow path is formed in which natural circulation of air is efficiently performed with low resistance according to its characteristics, It is an object of the present invention to provide a cold air circulation structure of a refrigerating device in which dew from the cooler does not drip onto the display room.
【0006】[0006]
【課題を解決するための手段】叙上の目的の下に、本発
明によれば、冷蔵陳列室の天井部に冷却器を垂下保持
し、その冷却器の下方に露受用ドレンパンを設けた冷蔵
装置において、その冷気循環構造は、次のように構成さ
れる。即ち、ドレンパンは、水平方向にのびた複数の傾
斜露受板を相互間隔をおいて配設して横置ルーバ状に形
成され、このドレンパンを通る冷気の下降流路が形成さ
れる。更に、フィンアンドチューブ構造に好ましくは形
成される冷却器と、冷蔵陳列室の天井面との間に、上昇
した冷気又は相対的に高い温度の空気が入りこむ空気戻
り通路が形成される。According to the present invention, for the purpose of the above, a refrigerator is provided in which a cooler is hung and held on a ceiling of a refrigerating display room, and a dew receiving drain pan is provided below the cooler. In the device, the cold air circulation structure is configured as follows. That is, the drain pan is formed in the shape of a horizontal louver by arranging a plurality of inclined dew receiving plates extending in the horizontal direction at an interval from each other, and a descending flow path of cold air passing through the drain pan is formed. In addition, an air return passage is formed between the cooler, which is preferably formed in the fin-and-tube structure, and the ceiling surface of the refrigerating display room, in which the elevated cool air or the air having a relatively high temperature enters.
【0007】一般に、冷蔵陳列室の前面は、フロントガ
ラスとされ、後面は、引違い式のガラス引き戸として構
成され、この部分は他の断熱壁に比し外部からの入熱が
大きい。フロントガラスと冷却器との間、及び/又はガ
ラス引き戸と冷却器との間には、それぞれ通風用開口を
備えた垂直カバー、後部カバーが垂設され、これによ
り、フロントガラス及び/又はガラス引き戸の内面に沿
う空気の上昇流路が形成され、該上昇流路が、冷却器の
上部の空気戻り通路及び下方の横置き型ルーバ状ドレン
パンを通る下降通路と協動して、明確な自然循環流路を
形成する。又、フロントガラス側垂直カバーは、ドレン
パンの支持部材としても使用され、循環流路まわりの構
造部材を少なくし、循環抵抗の低減に寄与する。Generally, the front surface of the refrigerating display room is a windshield, and the rear surface is a sliding glass sliding door. This portion receives a larger amount of heat from the outside than other heat insulating walls. Between the windshield and the cooler, and / or between the glass sliding door and the cooler, a vertical cover and a rear cover, each of which has a ventilation opening, are vertically installed, whereby the windshield and / or the glass sliding door are provided. An ascending flow path for air is formed along the inner surface of the cooler, and the ascending flow path cooperates with the air return path at the upper part of the cooler and the descending path through the horizontal louver-like drain pan below to provide a clear natural circulation. Form a flow path. Further, the windshield side vertical cover is also used as a support member for the drain pan and contributes to the reduction of the circulation resistance by reducing the structural members around the circulation flow path.
【0008】[0008]
【作用】以上の構成において、冷却器は、内部を通る冷
媒が蒸発することによって、周囲の空気を冷却して冷気
とし、これは、ドレンパンを通って下降し、冷蔵陳列品
を冷却する。冷気の下降により冷却器の上方は、相対的
に低圧となり、又、フロントガラス、ガラス引き戸を通
って入る外部熱によって、周辺の空気は密度が減少する
ので、フロントガラスの内面に沿い、ガラス引き戸の内
面に沿い、空気の上昇流が生じ、冷却器の上方へ向かう
循環流が発生する。冷却器の上方の空気戻り通路に入っ
た空気は、冷却器の真上から下方に通過し、冷却され、
前述のように下降流となる。このようにして、空気の自
然対流による循環流路が形成され、空気は、自然に冷蔵
陳列室内をむらなく流れる。In the above structure, the cooler cools the surrounding air into cold air by evaporating the refrigerant passing through the cooler, and the cool air descends through the drain pan to cool the refrigerated display item. As the cool air descends, the pressure above the cooler becomes relatively low, and the density of the surrounding air decreases due to the external heat entering through the windshield and the glass sliding door. Along the inner surface of the, an upflow of air occurs, causing a circulating flow upward of the cooler. The air that has entered the air return passage above the cooler passes from directly above the cooler to below and is cooled,
As described above, it becomes a downward flow. In this way, a circulation flow path is formed by natural convection of air, and the air naturally flows evenly in the refrigeration display room.
【0009】[0009]
【実施例】以下、添付の図面を参照して本発明の実施例
を説明する。図1の(a)及び(b)において、冷蔵シ
ョーケース(冷蔵装置)10のケース本体11は、上部
に冷蔵品陳列室13、下部に機械室15を夫々有し、機
械室15には、圧縮機17を含む冷凍装置が収納されて
いる。冷蔵陳列室13の前面は、ガラス板すなわちフロ
ントガラス19から構成され、一方、後面の中央は、ガ
ラス引き戸21からなっている。ガラス引き戸21は、
通常の引違い戸のように戸枠とこの中に摺動自在に組み
込まれたガラス板よりなり、ガラス板の周囲には、図示
しないシール材が設けられて、内外空気の流通は遮断さ
れるようになっている。ガラス引き戸21は、本実施例
では、前述のように、ガラス板を主体として構成されて
いるが、冷蔵ショーケースの機能上必然的なものでな
く、冷蔵品の種類や使用目的によって、他の適切な扉に
置換してもよい。Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1A and 1B, a case main body 11 of a refrigerating showcase (refrigerating apparatus) 10 has a refrigerating goods display room 13 in an upper part and a machine room 15 in a lower part, and the machine room 15 has A refrigerating device including the compressor 17 is housed. The front surface of the refrigerating display room 13 is composed of a glass plate, that is, a windshield 19, while the center of the rear surface is composed of a glass sliding door 21. The glass sliding door 21
Like a normal sliding door, it consists of a door frame and a glass plate slidably incorporated therein, and a sealing material (not shown) is provided around the glass plate to block the flow of internal and external air. It is like this. In the present embodiment, the glass sliding door 21 is mainly composed of a glass plate as described above, but it is not inevitable in terms of the function of the refrigerated showcase, and may be different depending on the type of refrigerated product and the purpose of use. It may be replaced with an appropriate door.
【0010】冷蔵ショーケース10の冷蔵陳列室13の
中には、高さ方向のほぼ中央部に、棚板23a及び支持
腕23bからなる陳列棚23が設けられている。棚板2
3aは、好ましくはその両端を支持腕23bで支持され
た横長のガラス板からなっている。支持腕23bは、冷
蔵ショーケース10の長手方向の両端に位置して垂直上
方に延びる一対の支柱24に取り付けられる。一方、天
井部11aの直下には、フィンアンドチューブ式の冷却
器25が垂設されている。冷却器25は、前述の冷凍装
置の一部を構成する蒸発器であり、図1の(b)に最も
よく示すように、逆L形断面の一対のエンドプレート2
5aと、これらのエンドプレート間を垂直に延びる複数
の冷却フィン25cと、該エンドプレート及び冷却フィ
ンを貫いて延びる蛇管25bとを有する。図示の実施例
では、冷却器25は、各冷却フィンの上端がエンドプレ
ート25aよりも天井部11aから離れていて、冷却フ
ィン25cと天井部11aの下面との間に、所定の断面
積の空気戻り通路27が形成されるように取り付けられ
ている。更に、冷却器25の下方には、ドレンパン29
が設けられ、これは、垂直なフロントカバー31の下部
に、取付板33を介して支持されている。In the refrigerating display room 13 of the refrigerating showcase 10, a display shelf 23 composed of a shelf plate 23a and a support arm 23b is provided at a substantially central portion in the height direction. Shelf 2
3a is preferably a horizontally long glass plate whose both ends are supported by support arms 23b. The support arms 23b are attached to a pair of columns 24 that are located at both ends in the longitudinal direction of the refrigerated showcase 10 and extend vertically upward. On the other hand, a fin-and-tube type cooler 25 is vertically provided just below the ceiling portion 11a. The cooler 25 is an evaporator that constitutes a part of the refrigeration system described above, and as shown best in FIG.
5a, a plurality of cooling fins 25c extending vertically between these end plates, and a flexible pipe 25b extending through the end plates and the cooling fins. In the illustrated embodiment, the cooler 25 has an upper end of each cooling fin that is farther from the ceiling portion 11a than the end plate 25a, and has a predetermined cross-sectional area between the cooling fins 25c and the lower surface of the ceiling portion 11a. It is mounted so that a return passage 27 is formed. Further, below the cooler 25, a drain pan 29
Is provided on the lower portion of the vertical front cover 31 via a mounting plate 33.
【0011】ドレンパン29は、当業者に容易に推察で
きるように、プレス加工等により一体的に成形されてお
り、複数の傾斜露受板29aが間隔をおいて配置され、
これらを両端部の桁部29bで一体的に連結する構造と
なっている。このドレンパン29は、通常は鉛直方向に
のびているルーバを横置きにした形になっており、傾斜
露受板29aの下端には、露収集樋部29cが形成され
ている。又、前述のフロントカバー31の下端部31a
は、露受板29aと同じ向きに曲げられて傾斜してお
り、他方、上部には、空気戻り通路27に臨んで、開口
31bが穿設されている。The drain pan 29 is integrally formed by press working or the like so that those skilled in the art can easily infer, and a plurality of inclined dew receiving plates 29a are arranged at intervals.
The structure is such that these are integrally connected by the girders 29b at both ends. The drain pan 29 has a shape in which a louver that normally extends in the vertical direction is placed horizontally, and a dew collection trough portion 29c is formed at the lower end of the inclined dew receiving plate 29a. In addition, the lower end portion 31a of the front cover 31 described above.
Is bent and inclined in the same direction as the dew receiving plate 29a, and on the other hand, an opening 31b is formed in the upper part so as to face the air return passage 27.
【0012】冷蔵陳列室13には、冷却器25に加え
て、別の冷却器35が陳列室底部に設けられているが、
この冷却器35も前述の冷凍装置の一部をなしている。
冷却器35は、プレートアンドチューブ式のもので、機
械室15との境界をなす断熱底板37の上面部に埋め込
まれており、その上には、通常の簀子39が敷かれる。
以上のような構造の冷蔵ショーケース10において、冷
凍装置を運転し、冷却器25,35内で冷媒を蒸発させ
ると、冷却器25は周囲の空気を冷却して冷気とし、冷
却器35は、簀子39の上の図示しない陳列品を下側か
ら冷却する。冷蔵陳列室13内の空気の循環流動に寄与
するのは、主として冷却器25であるので、これについ
てまず説明すると、前述の冷気は、横置きルーバ状ドレ
ンパン29の傾斜露受板29a間の隙間を通って、矢印
Aに示すように下降する。このような冷気は、陳列棚2
3又はその上の陳列品に当たってこれらを冷却すると共
に、矢印Bに示すように、横方向へそれて流れる。陳列
品を冷却した冷気は、若干温度が上がるが、周囲の空気
に対し相対的に低温で、比重が大きければ、なお、矢印
B’のように下降する。In the refrigerating display room 13, in addition to the cooler 25, another cooler 35 is provided at the bottom of the display room.
This cooler 35 also forms a part of the refrigeration system described above.
The cooler 35 is a plate-and-tube type, and is embedded in the upper surface portion of a heat insulating bottom plate 37 that forms a boundary with the machine room 15, and a normal babysitting 39 is laid on it.
In the refrigerating showcase 10 having the above-described structure, when the refrigerating device is operated to evaporate the refrigerant in the coolers 25 and 35, the cooler 25 cools the surrounding air into cool air, and the cooler 35 The display item (not shown) on the cage 39 is cooled from below. The cooler 25 mainly contributes to the circulating flow of the air in the refrigerating / displaying room 13. Therefore, the cooler will be described first. The cool air described above is a gap between the inclined dew receiving plates 29a of the horizontal louver-like drain pan 29. And descends as indicated by arrow A. Such cold air is displayed on the display shelf 2
3 and the items above it to cool them while flowing laterally as indicated by arrow B. The temperature of the cool air that has cooled the displayed items rises slightly, but when the temperature is relatively low with respect to the surrounding air and the specific gravity is large, it still falls as indicated by arrow B ′.
【0013】一方、フロントガラス19やガラス引き戸
21付近では、外部からの入熱により、内側の冷気が温
められ、上昇流D,D’を生ずる。上昇流D,D’が生
ずれば、前述の冷気流B’は、適当な所で、上昇流D,
D’の背後にまわりこむ形で反転し、上昇流に転じるこ
とになる。前述した冷気の上昇流Dは、フロントガラス
19とフロントカバー31の間を上方へ流れ、天井部1
1aの下面にぶつかって転向流Eとなり、開口31bを
通って、空気戻り通路27へ流入する。冷却器25で
は、引続き冷却作用を続行して冷気の下降流を生じてい
るから、空気戻り通路27内の空気は、矢印Fの如く流
れ、自然に冷却器25の冷却フィン間に引きこまれてい
く。同様に、後面側の上昇流D’も、引き続き上方へ流
れ、転向流E’となって、空気戻り通路27内へ流入す
る。On the other hand, in the vicinity of the windshield 19 and the glass sliding door 21, the cold air inside is warmed by the heat input from the outside, and ascending flows D and D'are generated. If the updrafts D and D'are generated, the above-mentioned cold airflow B'is at an appropriate place.
It will turn around behind D ', turning into an upward flow. The above-described upward flow D of cool air flows upward between the windshield 19 and the front cover 31, and the ceiling portion 1
The turning flow E collides with the lower surface of 1a and flows into the air return passage 27 through the opening 31b. In the cooler 25, the cooling action is continued and the downflow of the cool air is generated. Therefore, the air in the air return passage 27 flows as shown by the arrow F and is naturally drawn between the cooling fins of the cooler 25. To go. Similarly, the upward flow D ′ on the rear surface side also continues to flow upward and becomes a turning flow E ′ and flows into the air return passage 27.
【0014】以上、要するに、冷却器25の冷却運転に
より、冷蔵陳列室13の中には、矢印A,B,B’,
D,D’,E,E’に示すような空気の流れが生じ、自
然循環が行われる。以上のような自然対流が支配的な中
で、冷却器35は、勿論、簀子39やその上の陳列品に
接した空気を冷却するが、これは、矢印Cのような流れ
となって、反転流B’と合流する。以上のような自然対
流が生ずる冷蔵陳列室13の中で、冷却器25に結露が
生じ、これが集合して滴下するが、これは、すべて傾斜
露受板29aの上に落ちて集められる。図から判るよう
に一枚の傾斜露受板29aの上端が隣の傾斜露受板29
aの樋部29cの上方にオーバーラッパしている。従っ
て、下方の冷蔵陳列品の上に露が落下してその品質を低
下させるようなことはない。As described above, in short, the cooling operation of the cooler 25 causes the arrows A, B, B ', and
The air flow as shown by D, D ', E, E'is generated and natural circulation is performed. While natural convection is dominant as described above, the cooler 35, of course, cools the air in contact with the cage 39 and the display item on it, which results in the flow indicated by arrow C. Merge with the reverse flow B '. In the refrigerating display room 13 in which the natural convection occurs as described above, dew condensation occurs on the cooler 25, which collects and drip, but all of them fall on the inclined dew receiving plate 29a and are collected. As can be seen from the figure, the upper end of one inclined dew receiving plate 29a is adjacent to the inclined dew receiving plate 29a.
It is overwrapped above the gutter 29c of a. Therefore, the dew does not drop on the refrigerated display below and deteriorate its quality.
【0015】以上の実施例においては、上方の冷却器2
5のエンドプレート25aを単純な平板状としたが、例
えば、図2の冷却器125のようにエンドプレート12
5aに天井部への取付部125fを除いて、スロット1
25c,125d,125e(開口)を形成してもよ
い。勿論エンドプレート125aの強度は、確保されて
いる。このようにすると、ケース本体11の天井面と、
冷却器125の冷却フィンとの間の空気戻り通路127
には、前方及び後方ばかりでなく両側方からも空気が流
入するので、流路抵抗も少なく、冷気の自然循環が促進
される。なお、図2の冷蔵ショーケース110のうち、
図1の冷蔵ショーケース10と同一の部分には、同一の
符号を付し、説明は割愛している。In the above embodiment, the upper cooler 2
Although the end plate 25a of No. 5 has a simple flat plate shape, for example, like the cooler 125 of FIG.
5a, except the mounting portion 125f to the ceiling portion, slot 1
You may form 25c, 125d, 125e (opening). Of course, the strength of the end plate 125a is ensured. In this way, the ceiling surface of the case body 11 and
Air return passage 127 between cooling fins of cooler 125
Since air flows in not only from the front and rear sides but also from both sides, the flow path resistance is small and the natural circulation of cool air is promoted. In addition, of the refrigerated showcase 110 of FIG.
The same parts as those of the refrigerated showcase 10 of FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
【0016】更に、前記第1実施例(図1)のものにお
いて、図3に示すように、冷却器25とケース本体11
の後壁11bとの間に、リヤカバー215(後部カバ
ー)を垂設すると、ガラス引き戸21に沿う上昇流D’
の流路が好適に維持される。リヤカバー215の下端部
215aは、ドレンパン29側に傾けられて両者の間に
空気上昇流路は形成されず、又、上端に開口215bが
形成されて転向流E’を空気戻り通路27へ導く。更
に、ドレンパン29側に傾くフロントカバー31の下端
部31aとリヤカバー215の下端部215aは、相対
的に温度の高い空気の冷却器方向への流れを容易にする
と共に、それ等の絞り効果により冷却器からの冷気の下
降流の流速を増して、上述した自然循環を促進させる。
図3の実施例である冷蔵ショーケース210において、
冷蔵ショーケース10と同一の部分は同一の符号を付し
ている。これら実施例によって、冷気の自然循環流路が
明確に形成され、流れ相互の衝突、干渉もなく、隣接の
部材から受ける流れ抵抗も極めて小さい。Further, in the first embodiment (FIG. 1), as shown in FIG. 3, the cooler 25 and the case body 11 are provided.
When the rear cover 215 (rear cover) is vertically installed between the rear wall 11b and the rear wall 11b, the ascending flow D'along the glass sliding door 21.
The flow path of is suitably maintained. The lower end 215a of the rear cover 215 is inclined toward the drain pan 29 side so that an air rising flow path is not formed between the two, and an opening 215b is formed at the upper end to guide the turning flow E'to the air return passage 27. Further, the lower end portion 31a of the front cover 31 and the lower end portion 215a of the rear cover 215 which are inclined toward the drain pan 29 side facilitate the flow of relatively hot air toward the cooler, and at the same time, cool them by the throttling effect. The downward flow rate of cold air from the vessel is increased to promote the natural circulation described above.
In the refrigerated showcase 210 that is the embodiment of FIG.
The same parts as those of the refrigerated showcase 10 are designated by the same reference numerals. According to these embodiments, the natural circulation flow path of the cool air is clearly formed, there is no collision or interference of the flows, and the flow resistance received from the adjacent members is extremely small.
【0017】[0017]
【発明の効果】以上説明したように、本発明によれば、
次の効果が得られる。即ち、請求項1の発明によれば、
横置きルーバ状のドレンパンにより冷気の下降流路が確
保され、更に冷却器の直上に空気戻り通路が形成されて
いるので、循環する空気流は、冷却器を効率的に貫流
し、良好な熱交換が行われ、冷却効果が向上する。請求
項2の発明によれば、更に冷却器の前方に垂直カバーが
垂設され、フロントガラスの内面に沿う冷気の上昇流を
煙突効果により確実に、冷却器上方の空気戻り通路に導
く自然循環促進作用により、更に高い熱交換効率、冷却
効果が得られる。As described above, according to the present invention,
The following effects are obtained. That is, according to the invention of claim 1,
The horizontal louver-shaped drain pan secures the descending flow path for the cool air, and the air return passage is formed directly above the cooler, so the circulating air flow efficiently flows through the cooler and provides good heat. Replacement is performed and the cooling effect is improved. According to the second aspect of the present invention, the vertical cover is further provided in front of the cooler so as to surely guide the upward flow of the cool air along the inner surface of the windshield to the air return passage above the cooler by the chimney effect. Due to the promoting action, higher heat exchange efficiency and higher cooling effect can be obtained.
【0018】また、請求項3の発明によれば、冷却器の
エンドプレートに開口を設け、そこからも相対的に高温
の空気を冷却器に流入させるので、かかる構成によって
も熱交換効率を高めることができる。更に、請求項4の
発明によれば、冷却器の上方の空気戻り通路に至る後面
空気循環路を形成したので、請求項2の発明と同様の原
理により、更に高い熱交換効果、冷却効果が得られる。According to the third aspect of the present invention, the end plate of the cooler is provided with an opening, and relatively high temperature air is made to flow into the end plate from the opening as well. be able to. Further, according to the invention of claim 4, since the rear air circulation path reaching the air return path above the cooler is formed, a higher heat exchange effect and a cooling effect can be obtained by the same principle as the invention of claim 2. can get.
【図1】 (a)は、本発明の実施例に係る冷蔵ショー
ケースの立断面図である。(b)は、図1の(a)にお
けるIb−Ib線に沿って切断して冷却器の断面構造を板
厚を誇示して示す断面図である。FIG. 1A is a vertical sectional view of a refrigerating showcase according to an embodiment of the present invention. FIG. 1B is a sectional view showing the sectional structure of the cooler by cutting along the line Ib-Ib in FIG.
【図2】 本発明の別の実施例を示す立断面図である。FIG. 2 is a vertical sectional view showing another embodiment of the present invention.
【図3】 本発明の更に別の実施例を示す立断面図であ
る。FIG. 3 is a vertical sectional view showing still another embodiment of the present invention.
10…冷蔵ショーケース(冷蔵装置)、11…ケース本
体、11a…天井部、11b…後壁、13…冷蔵陳列
室、19…フロントガラス、21…ガラス引き戸、25
…冷却器、25a…エンドプレート、25b…冷却蛇
管、25c…冷却フィン、27…空気戻り通路、29…
ドレンパン、29a…傾斜露受板、29c…樋部、31
…垂直カバー(フロントカバー)、31b…開口、11
0…冷蔵ショーケース(冷蔵装置)、125…冷却器、
125c・125d・125e…スロット(開口)、1
25f…取付部、127…空気戻り通路、210…冷蔵
ショーケース(冷蔵装置)、215…リヤカバー(後部
カバー)、215b…開口。DESCRIPTION OF SYMBOLS 10 ... Refrigerating showcase (refrigerator), 11 ... Case main body, 11a ... Ceiling part, 11b ... Rear wall, 13 ... Refrigerating display room, 19 ... Windshield, 21 ... Glass sliding door, 25
... Cooler, 25a ... End plate, 25b ... Cooling pipe, 25c ... Cooling fin, 27 ... Air return passage, 29 ...
Drain pan, 29a ... Inclined dew plate, 29c ... Gutter part, 31
... Vertical cover (front cover), 31b ... Opening, 11
0 ... Refrigerator showcase (refrigerator), 125 ... Cooler,
125c, 125d, 125e ... Slot (opening), 1
25f ... Mounting part, 127 ... Air return passage, 210 ... Refrigerating showcase (refrigerating device), 215 ... Rear cover (rear cover), 215b ... Opening.
Claims (4)
し、同冷却器の下方に露受用ドレンパンを設けた冷蔵装
置において、水平方向に延びた複数の傾斜露受板を間隔
をおいて配設して、前記ドレンパンを横置きルーバ状に
構成すると共に、前記冷却器と前記天井部との間に十分
な流路断面積の空気戻り通路を形成したことを特徴とす
る冷蔵装置の冷気循環構造。1. In a refrigerating apparatus in which a cooler is suspended from a ceiling of a refrigerating display room and a drain pan for exposing the dew is provided below the cooler, a plurality of inclined dew receiving plates extending in a horizontal direction are arranged at intervals. The drain pan is arranged horizontally to form a louver shape, and an air return passage having a sufficient flow passage cross-sectional area is formed between the cooler and the ceiling portion. Cold air circulation structure.
記天井部の下方に垂下保持された前記冷却器との間に、
前記ドレンパンを下部で支持すると共に、上部に前記空
気戻り通路に対向する開口が穿設された垂直カバーを設
けたことを特徴とする請求項1記載の冷気循環構造。2. Between the windshield of the refrigerating display room and the cooler suspended below the ceiling,
The cold air circulation structure according to claim 1, wherein the drain pan is supported at a lower portion, and a vertical cover having an opening facing the air return passage is provided at an upper portion thereof.
り付けられる一対のエンドプレートと、該エンドプレー
ト間に、同エンドプレートと同一方向に延びるように互
いに平行に配置された複数の冷却フィンと、前記エンド
プレート及び前記冷却フィンを貫いて延びる蛇管とを備
え、前記冷却フィンの上端は、前記空気戻り通路を形成
するように、前記エンドプレートの上端部よりも低い位
置で終端し、前記エンドプレートの上端部には前記空気
戻り通路に臨む開口が形成されていることを特徴とする
請求項1又は2記載の冷気循環構造。3. The cooler includes a pair of end plates attached to the ceiling portion at an upper end portion, and a plurality of cooling elements arranged in parallel between the end plates so as to extend in the same direction as the end plates. A fin, and a flexible tube extending through the end plate and the cooling fin, and an upper end of the cooling fin terminates at a position lower than an upper end of the end plate so as to form the air return passage, The cold air circulation structure according to claim 1 or 2, wherein an opening facing the air return passage is formed at an upper end portion of the end plate.
と、前記冷蔵陳列室の後面ガラス引戸との間に、上部に
空気戻り通路に至る開口を備えた後部カバーを垂設した
ことを特徴とする請求項1又は2記載の冷蔵装置の冷気
循環構造。4. A rear cover having an opening leading to an air return passage is vertically provided between the cooler suspended from the ceiling and the rear glass sliding door of the refrigeration display room. The cold air circulation structure of the refrigeration system according to claim 1 or 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12399294A JP3347876B2 (en) | 1994-06-06 | 1994-06-06 | Cold air circulation structure of refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12399294A JP3347876B2 (en) | 1994-06-06 | 1994-06-06 | Cold air circulation structure of refrigerator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07332833A true JPH07332833A (en) | 1995-12-22 |
JP3347876B2 JP3347876B2 (en) | 2002-11-20 |
Family
ID=14874366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12399294A Expired - Fee Related JP3347876B2 (en) | 1994-06-06 | 1994-06-06 | Cold air circulation structure of refrigerator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3347876B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008292120A (en) * | 2007-05-28 | 2008-12-04 | Hoshizaki Electric Co Ltd | Refrigerated showcase |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7261607B2 (en) * | 2019-02-18 | 2023-04-20 | ホシザキ株式会社 | Showcase |
-
1994
- 1994-06-06 JP JP12399294A patent/JP3347876B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008292120A (en) * | 2007-05-28 | 2008-12-04 | Hoshizaki Electric Co Ltd | Refrigerated showcase |
Also Published As
Publication number | Publication date |
---|---|
JP3347876B2 (en) | 2002-11-20 |
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