JPH0754231B2 - Open showcase - Google Patents
Open showcaseInfo
- Publication number
- JPH0754231B2 JPH0754231B2 JP1141263A JP14126389A JPH0754231B2 JP H0754231 B2 JPH0754231 B2 JP H0754231B2 JP 1141263 A JP1141263 A JP 1141263A JP 14126389 A JP14126389 A JP 14126389A JP H0754231 B2 JPH0754231 B2 JP H0754231B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- main
- cold air
- mounting table
- duct
- 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.)
- Expired - Fee Related
Links
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 14
- 238000005192 partition Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Freezers Or Refrigerated Showcases (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は、主に野菜や果実などの生鮮食品を冷却保存し
て、その鮮度良好な状態で陳列を行うオープンショーケ
ースに関する。TECHNICAL FIELD The present invention relates to an open showcase in which fresh food such as vegetables and fruits is mainly stored in a cold state and displayed in a fresh state.
（ロ）従来の技術 従来、最っとも一般的なオープンショーケースは、商品
の載置台とその上部に設けた天井との間の空間を、前面
の開口部を残して後面および左右側面を壁で覆って、こ
の前面の開口部に天井縁部から載置台の縁部に流れる空
気層（エアカーテン）を形成して、載置台の陳列物を外
気から保護するようにしている。エアカーテンは内外２
層の空気層で形成することもあるし、単層で形成するこ
ともある。(B) Conventional technology Conventionally, the most general open showcase is a space between the product mounting table and the ceiling provided above the product, and the rear and left and right side walls are left with the front opening left. And an air layer (air curtain) flowing from the ceiling edge to the edge of the mounting table is formed in the opening on the front side to protect the display on the mounting table from the outside air. Inside and outside of the air curtain 2
It may be formed as an air layer, or may be formed as a single layer.
而るに、このオープンショーケースでは３方が壁で囲ま
れている陳列物が良く見えず、陳列効果が十分と言えな
いため、これら左右壁を取り払って、広い角度で周囲か
らよく見えるようにした構成のものが近年提案されてい
る。更に後壁をも取り全周を開放したものさえある。However, in this open showcase, the display surrounded by walls on three sides cannot be seen well, and the display effect is not sufficient, so remove these left and right walls so that they can be seen well from the surroundings at a wide angle. In recent years, a structure having this structure has been proposed. There are even those with the rear wall taken open all around.
（ハ）発明が解決しようとする課題 而るに、このように三方および全外周にエアカーテンを
流すようにすると、空気風量が多くなり、冷凍装置の能
力の高いもの、或いは大型のものをオープンショーケー
ス内に組み込むと言うことになり、コストの増大、並び
に組立作業の複雑性を伴う。よって、このような対応を
必要としないで、エアカーテンを多く形成することが好
ましい。(C) Problems to be Solved by the Invention However, when the air curtain is made to flow on the three sides and the entire outer circumference in this way, the air flow rate increases, and a refrigeration system with a high capacity or a large size is opened. Incorporating it into a showcase results in increased costs and complexity of assembly work. Therefore, it is preferable to form many air curtains without requiring such measures.
本発明は上記点に鑑みて成され、エアカーテンを効率良
い空気流の流れで形成できるようにして、冷凍装置が小
型、又能力的に大なるものとせずとも、十分な冷却効果
を発揮できるオープンショーケースを提供することを目
的とする。The present invention has been made in view of the above points, and enables the air curtain to be formed with an efficient air flow, so that a sufficient cooling effect can be exhibited without the refrigeration apparatus being small in size and large in capacity. The purpose is to provide an open showcase.
（ニ）課題を解決するための手段 本発明に係るオープンショーケースは、天井板の縁部か
ら少なくとも三方向に吐出される空気層を載置台の縁部
から吸い込んでエアカーテンを形成し載置台の陳列物を
外気から保護するように構成したオープンショーケース
において、載置台内に、吸い込んだ空気に対して共用的
な補助蒸発器を配設し、該補助蒸発器を介してそれぞれ
空気の流入を主蒸発器を収設した主ダクトと、この主ダ
クトの両側に沿設される側部ダクトを前記載置台上に設
け、前記天井板内部には、前記主ダクトと連通する主冷
気通路と、前記側部ダクトと連通する側部冷気通路とを
仕切って設け、この仕切板に、前記主ダクトからの冷気
の一部が前記側部冷気通路内へ流入する通風孔を設けた
ものである。(D) Means for Solving the Problems In the open showcase according to the present invention, an air curtain is formed by sucking air layers discharged in at least three directions from the edge of the ceiling plate to form an air curtain. In an open showcase configured to protect the display of the above from the outside air, an auxiliary evaporator common to the sucked air is arranged in the mounting table, and the inflow of air through each of the auxiliary evaporators is performed. A main duct accommodating the main evaporator, and side ducts provided on both sides of the main duct are provided on the mounting table, and inside the ceiling plate, a main cold air passage communicating with the main duct is provided. , A side cold air passage communicating with the side duct is provided so as to be partitioned, and a ventilation hole through which a part of the cool air from the main duct flows into the side cold air passage is provided in the partition plate. .
（ホ）作 用 載置台の周縁に設けた吸込口より、送風機により吸い込
まれた空気は、載置台内の補助蒸発器により先ず冷却さ
れる。冷却後、空気は主ダクトと側部ダクト内にそれぞ
れ流入する。主ダクト内に流入した空気は、その中の主
蒸発器で更に冷却される。そして、主ダクトおよび側部
ダクトの上方開口により、天井板内の主冷気通路、側部
冷気通路と導びかれて、主冷気通路先端の吐出口、側部
冷気通路先端の吐出口より冷気がエアカーテンとなって
吐出し、陳列台の商品を外界と隔絶して一定の冷却温度
に保つ。一方、主冷気通路と側部冷気通路とを仕切る仕
切板に設けた通風孔からは、主ダクト内の主冷気の一部
が入り込み、主冷気より冷却温度が高めで、風量も少な
い側部ダクトの冷気に加わって、側部冷気流を主冷気流
とバランスさせ、風速に差のない均等化したエアカーテ
ンをオープンショーケースの周囲に形成できるようにし
ている。よって、ショーケース内は冷却が均一化し、効
率良く冷却できる。エアカーテン形成に強弱な箇所が無
いので、例えば弱い箇所より外気が侵入し易くなって、
冷却効果を下げる結露現象の発生の心配も無い。冷気の
効率的活用により、冷凍装置の大型化を伴なわずして、
十分な冷却を確保でき、コストの低減を図れる。(E) Operation The air sucked by the blower from the suction port provided on the periphery of the mounting table is first cooled by the auxiliary evaporator in the mounting table. After cooling, the air flows into the main duct and the side ducts respectively. The air flowing into the main duct is further cooled by the main evaporator therein. The upper openings of the main duct and the side ducts lead to the main cold air passage and the side cold air passage in the ceiling plate, and cool air is discharged from the discharge port at the tip of the main cold air passage and the discharge port at the end of the side cold air passage. It discharges as an air curtain, isolating the products on the display stand from the outside world and maintaining a constant cooling temperature. On the other hand, a part of the main cold air in the main duct enters from the ventilation hole provided in the partition plate that separates the main cold air passage and the side cold air passage, and the side duct has a higher cooling temperature than the main cold air and a small air volume. In addition to the cold air, the side cold air flow is balanced with the main cold air flow, and a uniform air curtain with no difference in wind speed can be formed around the open showcase. Therefore, the inside of the showcase is uniformly cooled and can be efficiently cooled. Since there are no strong or weak points in the air curtain formation, for example, it is easier for outside air to enter the weak points,
There is no concern about the occurrence of dew condensation that reduces the cooling effect. Efficient use of cold air without increasing the size of the refrigeration system
Sufficient cooling can be secured and cost can be reduced.
（ヘ）実施例 以下、本発明の実施例を説明する。(F) Examples Examples of the present invention will be described below.
第１図は、全周にエアカーテンが形成される本発明オー
プンショーケースの外観斜視図、第２図は第１図に示す
オープンショーケースにおいて、その正面方向の構成
図、第３図は第２図のＡ−Ａ矢視断面図、第４図は第２
図のＢ−Ｂ矢視断面図、そして第５図は第２図に示す実
施例の天井板部分における構成を示す要部構造斜視図で
ある。FIG. 1 is an external perspective view of an open showcase of the present invention in which an air curtain is formed on the entire circumference, FIG. 2 is a front view configuration diagram of the open showcase shown in FIG. 1, and FIG. 2 is a sectional view taken along the line AA in FIG. 2, and FIG.
FIG. 5 is a cross-sectional view taken along the line BB of FIG. 5, and FIG. 5 is a perspective view of a main part structure showing a configuration in a ceiling plate portion of the embodiment shown in FIG.
先ず、第１図において、１は野菜、果実等を正面部2a、
背面部2b、左右側面部2c,2dで形成される凹所２に収
納、陳列する商品載置台にして、これら各正面、背面、
左右側面の各面部2a,2b,2c,2dの上部には吸込口（後述
する）が設けられている。3,3は載置台１内部から、次
述する天井板へ向かって空気を流す矩形状の主ダクトで
載置台２の中央に立設されている。4,4は、この主ダク
ト3,3の左右側部に沿設された側部ダクトである。ここ
で、前記主ダクト３内には主体となる蒸発器が配設され
ているが、前記側部ダクト4,4内には蒸発器は配設され
ていない。その代わり、これら主ダクト３、側部ダクト
4,4に共通して、冷却された空気が流入するように、商
品載置台１内には、補助の蒸発器が共通的な熱交換位置
に配設されている。５は載置台１と対向して設けられた
天井板にして、内部に前記主ダクト３からの空気を流す
主冷気流路と、前記側部ダクト4,4からの空気を流す側
部冷気流路とが仕切形成されている。６は商品載置棚で
ある。上述した構成は第２図乃至第４図で更に明瞭とな
る。すなわち、各図において、主ダクト３内に主蒸発器
７が配設され、一方、この主蒸発器７を取り囲むように
その前後位置に一対の補助蒸発器8,8を、そしてその左
右位置にこの補助蒸発器8,8より小型の補助蒸発器9,9を
一対、合計４台の補助蒸発器を載置台１内に配設してい
る。これら、補助蒸発器8,8,9,9は、商品載置台１周囲
の冷気吸込口10,10,11,11より載置台１内に入り込む空
気に対して、熱交換作用を与え、冷却する。そして、冷
却された空気を主ダクト３、および側部ダクト4,4に流
入させる様に、載置台１内には、主送風機12,12とその
両側に設けられる副送風機13,13,13,13とが収納されて
いる。そして、主ダクト３に流入した空気流は、その中
の主蒸発器７により更に冷却されることになる。ここ
で、主ダクト３に流入した空気と、側部ダクト4,4に流
入した空気がどのような流路をとるかを次に説明する。
天井板５部分の内部構造を示す第５図にて判るように、
主ダクト３内を上方へ向かって流れる空気流が主ダクト
３の上部開口3Aより、相対向する前後方向（点線矢印A,
A）の二手に分かれて、主冷気流となって流れる主冷気
通路14と、前記側部ダクト4,4内を上方へ向かって流れ
る空気流が側部ダクト4,4の上部開口4A,4Aより、左右の
側方（点線矢印C,C）に向かい、側部冷気流となって流
れる側部冷気通路15とが仕切られて、天井板５内部に形
成されるよう、仕切板16,16が設けられている。そし
て、この仕切板16,16の一部分は主ダクト３と側部ダク
ト4,4を区切る断面コ字型の区壁17,17となって、下端ま
で延びている。又、天井板５の４周には、これら、主冷
気通路14並びに側部冷気通路15,15と連通する冷気吐出
口18,18,19,19が設けられている。また、これら冷気吐
出口18,18,19,19には蜂の巣状の整流格子18a,19aが配設
されている。従って、主冷気流路は第３図に示すよう
に、主ダクト３→主冷気通路14→冷気吐出口18→エアカ
ーテンA1→冷気吸込口10→載置台１内の補助蒸発器８、
送風機12→主ダクト３と巡り、再び主蒸発器７を通過し
て循環する。なお、主ダクト３内の下部には、風向板2
0,20が設けられている。First, in FIG. 1, 1 is a front portion 2a of vegetables, fruits, etc.
A product table that is stored and displayed in the recess 2 formed by the back surface part 2b and the left and right side surface parts 2c, 2d.
A suction port (described later) is provided at an upper portion of each of the left and right side surface portions 2a, 2b, 2c, 2d. 3 and 3 are rectangular main ducts that flow air from the inside of the mounting table 1 toward the ceiling plate, which will be described below, and are erected at the center of the mounting table 2. Reference numerals 4 and 4 denote side ducts provided along the left and right side portions of the main ducts 3 and 3, respectively. Here, although the main evaporator is disposed in the main duct 3, the evaporator is not disposed in the side ducts 4, 4. Instead, these main ducts 3, side ducts
In common with 4 and 4, an auxiliary evaporator is arranged at a common heat exchange position in the product mounting table 1 so that cooled air flows in. Reference numeral 5 denotes a ceiling plate provided so as to face the mounting table 1, and a main cold air flow passage through which air from the main duct 3 flows and a side cold air flow through which air from the side ducts 4 and 4 flow. The road and the road are divided. 6 is a product placing shelf. The configuration described above will be more apparent in FIGS. That is, in each figure, the main evaporator 7 is arranged in the main duct 3, while a pair of auxiliary evaporators 8 and 8 are provided at the front and rear positions so as to surround the main evaporator 7, and at the left and right positions thereof. A pair of auxiliary evaporators 9 and 9 smaller than the auxiliary evaporators 8 and a total of four auxiliary evaporators are arranged in the mounting table 1. These auxiliary evaporators 8,8,9,9 give heat exchange action to the air entering the mounting table 1 through the cool air suction ports 10,10,11,11 around the product mounting table 1 to cool them. . Then, in order to allow the cooled air to flow into the main duct 3 and the side ducts 4, 4, in the mounting table 1, the main blowers 12, 12 and the sub blowers 13, 13, 13, 13 and 13 are stored. Then, the airflow that has flowed into the main duct 3 is further cooled by the main evaporator 7 therein. Here, the flow path of the air flowing into the main duct 3 and the air flowing into the side ducts 4, 4 will be described below.
As can be seen in FIG. 5 showing the internal structure of the ceiling plate 5,
The air flow that flows upward in the main duct 3 is opposed to the front-back direction (dotted line arrow A,
A), the main cold air passage 14 that flows as a main cold airflow and the air flow that flows upward in the side ducts 4, 4 are the upper openings 4A, 4A of the side ducts 4, 4. As a result, the partition plates 16 and 16 are formed so as to be formed inside the ceiling plate 5 by partitioning the side cold air passages 15 that flow as a side cold airflow toward the left and right sides (dotted arrows C, C). Is provided. A part of the partition plates 16 and 16 serves as partition walls 17 and 17 having a U-shaped cross section that partition the main duct 3 and the side ducts 4 and 4 and extend to the lower end. Further, on the four circumferences of the ceiling plate 5, cold air discharge ports 18, 18, 19, 19 communicating with the main cold air passage 14 and the side cold air passages 15, 15 are provided. In addition, a honeycomb-shaped rectifying grid 18a, 19a is arranged at each of the cool air outlets 18, 18, 19, 19. Therefore, as shown in FIG. 3, the main cold air flow path includes the main duct 3, the main cold air passage 14, the cold air discharge port 18, the air curtain A 1, the cold air suction port 10, and the auxiliary evaporator 8 in the mounting table 1.
It goes around the blower 12 to the main duct 3, passes through the main evaporator 7 again, and circulates. At the bottom of the main duct 3, the wind direction plate 2
0 and 20 are provided.
一方、側部冷気流路は第２図に示すように側部ダクト４
→側部冷気通路15→冷気吐出口19→エアカーテンA2→冷
気吸込口11→載置台１内の補助蒸発器９、送風機９→側
部ダクト４と巡る。なお、送風機13,13により、一部の
空気は主ダクト３内にも流入する（第４図参照）。On the other hand, as shown in FIG.
→ Side cold air passage 15 → Cold air discharge port 19 → Air curtain A 2 → Cold air suction port 11 → Auxiliary evaporator 9 in the mounting table 1, blower 9 → Side duct 4. A part of the air also flows into the main duct 3 by the blowers 13 and 13 (see FIG. 4).
ところで、このようにして主冷気と側部冷気の冷気流路
が形成されているが、構成上、側部冷気の方が、冷却
度、風量、風速の点で、主冷気より劣るので、これを均
一に整えられるように工夫している。すなわち、第３
図、第４図に示す如く、主ダクト３の上部開口3A上方に
はその長手方向寸法と同一で幅方向には若干狭くした断
面下向コ字状の分流板21が仕切板16,16間に取り付けら
れている。一方、仕切板16,16にはこの分流板21と対向
する中央部に大径の主通風孔22,22が形成され、また、
この主通風孔22,22を挟んで、その左右両側辺部には、
先端に行くに従い漸次小径となる補助通風孔23,23…が
穿設されている。従って、主ダクト３の上部開口3Aより
流出した主冷気流の一部は、前記分流板21により、第４
図に示す矢線Ｂのように、それに沿って流れ、主通風孔
22,22、補助通風孔23,23…を通って側部ダクト4,4から
の側部冷気と合流して側部冷気通路15,15へと進入す
る。この進入していく空気流は第３図、第４図において
の矢印a1,b1で示す。なお、この進入冷気は、主ダクト
３を通る主冷気流帯の中で、その左右両側端、すなわち
側部ダクト4,4に近い測に流れているものがこの作用に
大きく係わっている。こうして、主冷気流の一部が側部
冷気流に加わって、冷却度をより十分とし、風速、風量
も補って、天井板５の周縁より吐出するエアカーテンを
全てほぼ均一に近いものとすることができる。By the way, the cold air flow paths of the main cold air and the side cold air are formed in this way, but the side cold air is inferior to the main cold air in terms of the cooling degree, the air volume, and the wind speed because of the configuration. Is devised so that it can be evenly arranged. That is, the third
As shown in FIG. 4 and FIG. 4, a flow dividing plate 21 having a U-shaped cross-section with a downward cross section having the same longitudinal dimension and slightly narrowing in the width direction is provided above the upper opening 3A of the main duct 3 between the partition plates 16 and 16. Is attached to. On the other hand, the partition plates 16 and 16 are formed with large-diameter main ventilation holes 22 and 22 in the central portion facing the flow distribution plate 21, and
The main ventilation holes 22 and 22 are sandwiched between the left and right sides,
Auxiliary ventilation holes 23, 23 ..., which are gradually reduced in diameter toward the tip, are provided. Therefore, a part of the main cold air flow that has flowed out from the upper opening 3A of the main duct 3 will be discharged to the fourth by the flow distribution plate 21.
As shown by the arrow B in the figure, the air flows along it and the main ventilation holes
22,22, through auxiliary ventilation holes 23,23 ..., merge with the side cold air from the side ducts 4,4 and enter the side cold air passages 15,15. The inflowing air flow is indicated by arrows a 1 and b 1 in FIGS. 3 and 4. It is to be noted that this incoming cool air is greatly involved in this action in the main cold airflow zone passing through the main duct 3 so as to flow to both left and right ends thereof, that is, near the side ducts 4, 4. In this way, a part of the main cold airflow is added to the side cold airflow to make the degree of cooling more sufficient, and also to supplement the wind speed and the air volume so that the air curtains discharged from the peripheral edge of the ceiling plate 5 are all substantially uniform. be able to.
上記構成により、送風機12,13,13と主蒸発器７および補
助蒸発器8,9が駆動すると、正面の冷気吸込口10,10から
は空気が主として送風機12,12より吸込まれて、先ず補
助蒸発器8,8にて冷却され、次いで主ダクト３内に流入
して主蒸発器７で再度冷却されて上部開口3Aより流出す
る。上部開口3Aからは殆どが主冷気流となって矢印A,A
方向に流れ、主冷気通路14を通り、吐出口18,18の整流
格子18a,18aによって整流されて吐出し、エアカーテンA
1,A1を形成する。しかし、主冷気流の一部が分流板21に
より矢印Ｂ方向にも流れて主通風孔22、補助通風孔23,2
3…に流入する。一方、左右の冷気吸込口11,11から送風
機13,13によって吸込まれる空気は、補助冷却器9,9で冷
却されて側部ダクト4,4内へと流れ、その上部開口4A,4A
より流出して側部冷気通路15,15内を通り、その吐出口1
9,19に至り、整流格子19a,19aによって整流されて吐出
し、エアカーテンA2,A2を形成する。このエアカーテンA
2,A2の形成に当って、主通風孔22,22、補助通風孔23,23
…より流入する冷却温度の低い主冷気流の一部は、側部
冷気流と混合することによってその冷気流温度を下げ、
かつ風量を多くし、風速を正面部分のエアカーテンA1,A
1と大差なくして吐出させる。With the above configuration, when the blowers 12, 13, 13 and the main evaporator 7 and the auxiliary evaporators 8, 9 are driven, air is mainly sucked from the blower 12, 12 from the front cool air suction port 10, 10, and the first auxiliary It is cooled in the evaporators 8,8, then flows into the main duct 3, is cooled again in the main evaporator 7, and flows out from the upper opening 3A. From the upper opening 3A, most of it becomes the main cold air flow, and the arrows A, A
Flow through the main cold air passage 14 and are rectified and discharged by the rectifying grids 18a and 18a of the discharge ports 18 and 18, and the air curtain A
Form 1 , A 1 . However, a part of the main cold airflow also flows in the direction of arrow B by the flow distribution plate 21, so that the main airflow holes 22 and the auxiliary airflow holes 23, 2
Inflow to 3 ... On the other hand, the air sucked by the blowers 13, 13 from the left and right cool air suction ports 11, 11 is cooled by the auxiliary coolers 9, 9 and flows into the side ducts 4, 4 and its upper openings 4A, 4A.
More outflow through the side cold air passages 15, 15 and its outlet 1
9 and 19, the air is rectified and discharged by the rectifying grids 19a and 19a to form the air curtains A 2 and A 2 . This air curtain A
2 and A 2 are formed, main ventilation holes 22 and 22, auxiliary ventilation holes 23 and 23
… A part of the main cold airflow with a lower cooling temperature flowing in lowers the temperature of the cold airflow by mixing with the side cold airflow.
In addition, the air volume is increased and the wind speed is set to the front air curtain A 1 , A
Discharge with no big difference from 1 .
よって、正面側のエアカーテンA1,A1とその左右側のエ
アカーテンA2,A2とは共にほぼ同一の冷却温度、風量、
風速で吐出形成されて、場所的に風量の強弱部分を生じ
ない全周均等なエアカーテンとなるので、庫内冷却の均
一が維持でき、ショーケース内の陳列物を効果的に外気
温度から保護できる。仮に、周囲のエアカーテンに強弱
箇所があると、弱い箇所から外気が浸入し、それにより
庫内に結露を生じ、冷却効果を著るしく低下させ、中の
陳列物が品質を損なうこととなる。更に、構成的には、
仕切板16,16に大小の通風孔22,23…を形成すると言う単
純な対応で、冷気流の効率的な活用が図れる。Therefore, the air curtains A 1 and A 1 on the front side and the air curtains A 2 and A 2 on the left and right sides thereof have substantially the same cooling temperature and air volume,
The air is discharged and formed at the wind speed, and it becomes an air curtain that is uniform around the entire circumference without creating strong or weak parts of the air volume, so that the cooling inside can be kept uniform and the display items in the showcase can be effectively protected from the outside temperature. it can. If there are strong and weak points in the surrounding air curtain, the outside air will infiltrate from the weak points, which will cause dew condensation inside the refrigerator, which will significantly reduce the cooling effect and the quality of the displayed items inside. . Furthermore, structurally,
By simply forming the large and small ventilation holes 22, 23 ... In the partition plates 16, 16, it is possible to efficiently utilize the cold air flow.
又、第６図には、分流板21を２枚のＬ型をした分割板21
a,21aで形成し、その一方、若しくは両方を左右にスラ
イド自在とする構成として、分流板21の幅Ｗを変更でき
るようにして、分流板21内に入る風量を調整できるよう
にした別の実施例を模式的に示す。この実施例によれ
ば、オープンショーケースの長手方向寸法、幅寸法に応
じてその四方向に平均化した風量のエアカーテンを分流
板21の幅変更操作により、容易に形成できる利点を有す
る。Further, in FIG. 6, the flow dividing plate 21 is divided into two L-shaped dividing plates 21.
It is formed by a and 21a, and one or both of them is slidable to the left and right so that the width W of the flow dividing plate 21 can be changed so that the amount of air entering the flow dividing plate 21 can be adjusted. An example is schematically shown. According to this embodiment, there is an advantage that an air curtain having an air volume averaged in the four directions depending on the longitudinal dimension and the width dimension of the open showcase can be easily formed by the width changing operation of the flow distribution plate 21.
（ト）発明の効果 以上のように本発明によれば、前方およびその左右両側
方の少なくとも三方にエアカーテンを形成しているオー
プンショーケースにおいて、補助蒸発器を内設した載置
台上に、主蒸発器を収設せる主ダクトと、その両側に沿
設した側部ダクトとを設け、載置台と対向する天井板内
部に、主ダクトと連通する主冷気通路と、側部ダクトと
連通する側部冷気通路とを仕切って設け、かつこの仕切
壁に形成した通風孔により、主ダクトからの主冷気の一
部が側部ダクトからの側部冷気に合流して側方のエアカ
ーテンの形成に寄与するように構成してある。よって、
主冷気流の一部活用によって、主冷気流よりも温度的に
高く、風量も弱い側部冷気流は温度、風量ともに向上さ
れて、吐出し側部エアカーテンを形成し、正面エアカー
テンと均等化される。故に、三方向、および全周的に風
速の均一化されたエアカーテンが吐出し、庫内冷却の均
一が維持できて冷却効果を高くして、陳列物を外気温度
より保護することができる。又、主ダクト内の冷気の一
部を有効に活用できるので、エアカーテンを多く形成し
ても、冷凍装置は大型化しないで対処でき、コスト的に
低廉となる。更に、冷気の活用は仕切板に通風孔を設け
ると言う単純構成で済むと共に、その冷気風量を可変で
きる等、種々の効果を発揮できるオープンショーケース
となる。(G) Effect of the Invention As described above, according to the present invention, in an open showcase in which air curtains are formed on at least three sides of the front side and the left and right sides thereof, on a mounting table in which an auxiliary evaporator is installed, A main duct for accommodating the main evaporator and side ducts along both sides thereof are provided, and inside the ceiling plate facing the mounting table, a main cold air passage communicating with the main duct and a side duct communicating with the side duct. The side cold air passages are separated from each other, and the ventilation holes formed in this partition wall partly merge the main cold air from the main duct with the side cold air from the side ducts to form a side air curtain. It is configured to contribute to. Therefore,
By utilizing part of the main cold airflow, the side cold airflow is higher in temperature and weaker in airflow than the main cold airflow, and both the temperature and airflow are improved to form the discharge side air curtain, which is even with the front air curtain. Be converted. Therefore, the air curtain whose wind speeds are made uniform in three directions and in the entire circumference is discharged, and it is possible to maintain the uniform cooling of the inside of the compartment, enhance the cooling effect, and protect the display from the outside air temperature. Further, since a part of the cool air in the main duct can be effectively utilized, even if a large number of air curtains are formed, the refrigeration system can be dealt with without increasing the size, and the cost can be reduced. Further, the use of the cool air can be achieved by a simple structure in which the partition plate is provided with ventilation holes, and at the same time, the open air showcase can exhibit various effects such as changing the amount of the cool air.
第１図は全周にエアカーテンが形成される本発明オープ
ンショーケースの外観斜視図、第２図は第１図に示すオ
ープンショーケースにおいて、その正面方向の構成図、
第３図は第２図のＡ−Ａ矢視断面図、第４図は第２図の
Ｂ−Ｂ矢視断面図、そして第５図は第２図に示す実施例
の天井板部分における構成を示す要部構造斜視図、第６
図は幅を変更可能とした分流板に係る他の実施例の模式
図である。 １……載置台、３……主ダクト、４……側部ダクト、５
……天井板、７……主蒸発器、8,9……補助蒸発器、10,
11……冷気吸込口、12,13……送風機、14……主冷気通
路、15……側部冷気通路、16,16……仕切板、18,19……
冷気吐出口、21……分流板、22……主通風孔、23……副
通風孔。FIG. 1 is an external perspective view of an open showcase of the present invention in which an air curtain is formed all around, and FIG. 2 is a front view configuration diagram of the open showcase shown in FIG.
3 is a sectional view taken along the line AA of FIG. 2, FIG. 4 is a sectional view taken along the line BB of FIG. 2, and FIG. 5 is a configuration of the ceiling plate portion of the embodiment shown in FIG. FIG. 6 is a perspective view of a main part structure showing
The drawing is a schematic view of another embodiment of the flow dividing plate whose width can be changed. 1 ... Mounting table, 3 ... Main duct, 4 ... Side duct, 5
...... Ceiling board, 7 ... Main evaporator, 8,9 ... Auxiliary evaporator, 10,
11 …… Cold air inlet, 12,13 …… Blower, 14 …… Main cold air passage, 15 …… Side cold air passage, 16,16 …… Partition plate, 18,19 ……
Cold air discharge port, 21 …… diversion plate, 22 …… main ventilation hole, 23 …… sub ventilation hole.
Claims (1)
される空気層を載置台の縁部から吸い込んでエアカーテ
ンを形成し載置台の陳列物を外気から保護するように構
成したオープンショーケースにおいて、載置台内に、送
風機により吸い込んだ空気に対して共用的な補助蒸発器
を配設し、該補助蒸発器を介してそれぞれ空気の流入す
る主蒸発器を収設した主ダクトと、この主ダクトの両側
に沿設される側部ダクトとを前記載置台上に設け、前記
天井板内部には、前記主ダクトと連通する主冷気通路
と、前記側部ダクトと連通する側部冷気通路とを仕切っ
て設け、この仕切板に、前記主ダクトからの冷気の一部
が前記側部冷気通路内へ流入する通風孔を設けたことを
特徴とするオープンショーケース。1. An open show in which air layers discharged from at least three directions from the edge of the ceiling plate are sucked from the edge of the mounting table to form an air curtain to protect the display of the mounting table from the outside air. In the case, a main duct in which a common auxiliary evaporator for the air sucked by the blower is disposed in the mounting table, and a main evaporator into which air flows through the auxiliary evaporator is housed, Side ducts provided along both sides of the main duct are provided on the mounting table, and a main cold air passage communicating with the main duct and a side cold air communicating with the side duct are provided inside the ceiling plate. An open showcase, characterized in that it is provided by partitioning a passage and a ventilation hole through which a part of the cool air from the main duct flows into the side cold air passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1141263A JPH0754231B2 (en) | 1989-06-05 | 1989-06-05 | Open showcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1141263A JPH0754231B2 (en) | 1989-06-05 | 1989-06-05 | Open showcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH037875A JPH037875A (en) | 1991-01-16 |
| JPH0754231B2 true JPH0754231B2 (en) | 1995-06-07 |
Family
ID=15287837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1141263A Expired - Fee Related JPH0754231B2 (en) | 1989-06-05 | 1989-06-05 | Open showcase |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754231B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04129085U (en) * | 1991-05-13 | 1992-11-25 | 富士電機冷機株式会社 | multi-tier round case |
| JPH05113284A (en) * | 1991-08-29 | 1993-05-07 | Nippon Kentetsu Co Ltd | Around freezing / refrigerating open case |
| US5798885A (en) * | 1994-06-06 | 1998-08-25 | Fujitsu Limited | Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection |
| JP4362189B2 (en) * | 2000-02-03 | 2009-11-11 | 株式会社岡村製作所 | Refrigerated open showcase |
| JP2008045772A (en) * | 2006-08-11 | 2008-02-28 | Sanden Corp | Open showcase |
| JP2010230259A (en) * | 2009-03-27 | 2010-10-14 | Sanyo Electric Co Ltd | Evaporator and showcase including the evaporator |
| JP5630374B2 (en) | 2010-06-11 | 2014-11-26 | 信越化学工業株式会社 | Microstructure manufacturing method and optical pattern-forming sacrificial film forming composition |
-
1989
- 1989-06-05 JP JP1141263A patent/JPH0754231B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH037875A (en) | 1991-01-16 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |