JPS6218828B2 - - Google Patents
Info
- Publication number
- JPS6218828B2 JPS6218828B2 JP54101640A JP10164079A JPS6218828B2 JP S6218828 B2 JPS6218828 B2 JP S6218828B2 JP 54101640 A JP54101640 A JP 54101640A JP 10164079 A JP10164079 A JP 10164079A JP S6218828 B2 JPS6218828 B2 JP S6218828B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- passage
- airflow
- outermost
- passageway
- 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
Links
- 238000005192 partition Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000035807 sensation Effects 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】
本発明は商品収納及び取出用の開口に少なくと
も二層以上のエアーカーテンを形成してなるオー
プンシヨーケースに関し、開口からの空気流の溢
流即ちオーバーフローを防止することを目的とす
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an open show case in which at least two or more layers of air curtains are formed in openings for storing and taking out products, and the present invention is directed to preventing overflow of airflow from the openings. purpose.
一般に第1図に示す如く此種のオープンシヨー
ケース本体1は貯蔵室2を画成する内箱3の一側
例えば前面に商品収納及び取出用の開口4、前記
内箱外壁面から適当間隔を存して内箱3を包囲す
る如く複数枚の区画壁5,6を配設して複数本の
通路7,8、前記開口の両端に臨設される各通路
の吹出口9,11及び吸込口10,12を形成
し、内側通路7には冷却器13、送風機14、外
側通路8には送風機15を設置し、前記冷却器及
び両送風機の運転により実線で示す速度の速い冷
却空気流を内側通路7、一点鎖線で示す速度の遅
い保護空気流を外側通路8に循環させ、開口4の
内側に低温エアーカーテン16、外側に保護エア
ーカーテン17を形成して貯蔵室2を冷却すると
ともに、前記貯蔵室の冷気団を外気から保護する
ものである。 Generally, as shown in FIG. 1, this type of open case main body 1 has an opening 4 for storing and taking out products on one side, for example, the front, of an inner box 3 defining a storage chamber 2, and an opening 4 at an appropriate distance from the outer wall of the inner box. A plurality of partition walls 5, 6 are arranged to surround the inner box 3, and a plurality of passages 7, 8, air outlets 9, 11 and suction ports of each passage are provided at both ends of the opening. 10 and 12, a cooler 13 and a blower 14 are installed in the inner passage 7, and a blower 15 is installed in the outer passage 8, and by operating the cooler and both blowers, a high-velocity cooling air flow shown by the solid line is directed to the inside. Passage 7 circulates a slow protective air flow indicated by a dashed line through outer passage 8 to form a low-temperature air curtain 16 inside opening 4 and a protective air curtain 17 outside to cool storage chamber 2. It protects the cold air mass in the storage room from the outside air.
前記両エアーカーテンを形成する冷却及び保護
両空気流は、開口4縦断中空気抵抗により吹出口
9,11における吹き出し初速度を維持できなく
なり、且つ流下するに従い内側部分で貯蔵室2の
冷気団、外側部分で静止外気を夫々巻き込んで拡
散されるため、冷却空気流の大部分は冷気団及び
保護空気流の一部を含み吸込口10に、保護空気
流の大部分は冷却空気流及び外気の一部を含み吸
込口12に導かれ夫々再循環するが、保護空気流
の拡散した部分は開口4から溢流するため、本体
前部の床面上に滞溜し顧客の足元に冷感を与える
コールドエイルとなる。 The cooling and protection air flows forming the two air curtains are unable to maintain the initial velocity at the outlet ports 9 and 11 due to air resistance in the longitudinal direction of the opening 4, and as they flow down, the cold air mass of the storage chamber 2, Since the outside part is diffused by entraining stationary outside air, the majority of the cooling air flow includes the cold air mass and a part of the protection air flow, and the majority of the protection air flow includes the cooling air mass and a part of the outside air. However, the diffused part of the protective air flow overflows from the opening 4 and accumulates on the floor at the front of the main unit, creating a cold sensation at the customer's feet. It will be a cold yell to give.
即ち、吹出口9,11から吹き出される各冷気
流の吹出風量と、吹込口10,12から吸い込ま
れる各空気流の吸込風量とは同一通路7,8を循
環する関係上等しくなるが、吸込口10に比べ吸
込口12の吸込風量が少なく且つ前記エアーカー
テンは密閉空間となる貯蔵室内側から順次各通路
7,8に吸い込まれ、又開放空間となる貯蔵室外
側に拡散された保護空気流の一部の代わりに吸込
口12付近の外気を吸い込み吸込風量を補なうた
め、コールドエイルが発生し冷凍負荷が増加する
欠点が生じた。 That is, the volume of each cold air flow blown out from the air outlets 9 and 11 and the intake air volume of each air stream sucked in from the air outlets 10 and 12 are equal because they circulate through the same passages 7 and 8; The suction air volume of the suction port 12 is smaller than that of the port 10, and the air curtain creates a protective air flow that is sequentially sucked into each passage 7, 8 from the inside of the storage room, which is a closed space, and is diffused to the outside of the storage room, which is an open space. In order to supplement the intake air volume by sucking in outside air near the suction port 12 instead of a part of the air, cold air occurs and the refrigeration load increases.
上記欠点のうち溢流を防止する手段としては、
区画壁6に通孔18を形成して保護空気流の一部
を外部に吐出して吸出風量を減少する方法がとら
れているが、この方法では確かに溢流を小なくす
ることができるが、逆に吸込口12からの外気吸
込風量の増加を招き冷凍負荷が更に増加する欠点
が生じた。 Among the above drawbacks, as a means to prevent overflow,
A method has been used to reduce the amount of suction air by forming a through hole 18 in the partition wall 6 and discharging a portion of the protective air flow to the outside, but this method can certainly reduce overflow. However, there was a drawback that the amount of outside air sucked from the suction port 12 increased, and the refrigeration load further increased.
本発明は係る欠点に鑑みなされたもので、以下
第2図乃至第6図によりその実施例を説明する。
尚、第2図乃至第6図において第1図と同じ符号
は同じものを示す。 The present invention has been made in view of these drawbacks, and embodiments thereof will be described below with reference to FIGS. 2 to 6.
In addition, in FIGS. 2 to 6, the same reference numerals as in FIG. 1 indicate the same parts.
第2図に示す19は内側通路7と、外側通路8
とを区画する区画壁5の吸込側に形成された流路
で、第3図に示す如く該流路を介してエアーカー
テン17を形成した直後の保護気流の一部を速度
の速い冷却空気流を吸い込む内側通路7に強制的
に導入して、即ち内側通路7を通過する冷却空気
流のエジエクタ効果でもつて保護気流の一部を内
側通路7に導入して内側通路7の吸込風量をより
大に、外側通路8の吸込風量をより小に設定して
両空気流の吸込風量の和を一定に維持することに
より、保護空気流の内側部分の吸込速度が増し、
拡散幅が小さく、即ちエアーカーテン17の乱れ
が少なくなり開口4からの溢流を防止できる。 19 shown in FIG. 2 is an inner passage 7 and an outer passage 8.
As shown in FIG. 3, a part of the protective air flow immediately after forming the air curtain 17 is converted into a high-velocity cooling air flow. In other words, a part of the protective airflow is introduced into the inner passageway 7 by the ejector effect of the cooling airflow passing through the inner passageway 7, thereby increasing the suction air volume of the inner passageway 7. In addition, by setting the suction air volume of the outer passage 8 to a smaller value and maintaining the sum of the suction air volumes of both air flows constant, the suction speed of the inner portion of the protective air flow is increased.
The diffusion width is small, that is, the turbulence of the air curtain 17 is reduced, and overflow from the opening 4 can be prevented.
第4図は本発明の他の実施例を示し、区画壁5
の吹出側に流路19を形成するとともに、該流路
の内側通路側に案内板20を配設して第5図に示
す如くエジエクタ装置となし、保護空気流の一部
をエジエクタ効果により内側通路7に強制的に導
入して内側通路7の吹出風量をより大に、外側通
路8の吹出風量をより小に設定して両空気流の吹
出風量の和を一定に維持することにより、保護空
気流の拡散幅が小さく即ちエアーカーテン17の
乱れが少なくなり開口4からの溢流を防止するこ
とができる。 FIG. 4 shows another embodiment of the invention, in which the partition wall 5
A flow path 19 is formed on the outlet side of the flow path, and a guide plate 20 is provided on the inner side of the flow path to form an ejector device as shown in FIG. Protection is achieved by forcibly introducing the air into the passage 7, increasing the air volume from the inner passage 7, and setting the air volume from the outer passage 8 to a smaller value, thereby maintaining the sum of the air volumes of both air streams constant. The diffusion width of the airflow is small, that is, the turbulence of the air curtain 17 is reduced, and overflow from the opening 4 can be prevented.
第6図は本発明の他の実施例を示し、三本の通
路7,8,21を形成して開口4に三層のエアー
カーテン16,17,22を形成するもので、最
外通路21の保護空気流の一部を中間通路17に
流路19を介して導入することにより、第2図実
施例と同じ効果を奏する。 FIG. 6 shows another embodiment of the present invention, in which three passages 7, 8, 21 are formed to form a three-layer air curtain 16, 17, 22 in the opening 4. By introducing a portion of the protective air flow into the intermediate passage 17 via the flow path 19, the same effect as in the embodiment of FIG. 2 is achieved.
以上述べた如く本発明は、貯蔵室の一側に形成
された商品収納及び取出用の開口に複数本の通路
を通過した各空気流を吹き出して最内層の低温エ
アーカーテンを含む複層のエアーカーテンを形成
してなるオープンシヨーケースにおいて、速度の
遅い空気流を通過させる最外通路と、該通路に相
隣接し前記空気流よりも速度の速い空気流を通過
させる内側通路とを区画する区画壁にこの最外、
内側両通路を連通させる流路を形成して最外通路
を通過する空気流の一部を内側通路を通過する空
気流により内側通路に導入するようにしたもので
あるから、内側通路を通過する空気流の速度を利
用したエジエクタ効果でもつて最外通路を通過中
の空気流の一部を流路を通して内側通路に導くこ
とにより、最外通路を通過する空気流の量を少な
くすることができ、この結果、最外エアーカーテ
ンの拡散幅を小さくして開口からの保護空気流の
溢流を防止してコールドエイルの発生を阻止する
とともに、溢流による冷凍負荷の増加をも防止す
ることができる。 As described above, the present invention blows out each air flow that has passed through a plurality of passages to an opening formed on one side of a storage room for storing and taking out products, thereby creating a multi-layered air curtain including a low-temperature air curtain in the innermost layer. In an open show case formed as a curtain, a section that defines an outermost passageway through which a slow airflow passes, and an inner passageway adjacent to the outermost passageway through which an airflow having a faster velocity than the airflow passes through. This outermost wall,
A flow path is formed that connects both inner passages, and a part of the air flow passing through the outermost passage is introduced into the inner passage by the air flow passing through the inner passage. The amount of air passing through the outermost passage can be reduced by guiding part of the air passing through the outermost passage to the inner passage through the flow passage using an ejector effect that utilizes the speed of the airflow. As a result, it is possible to reduce the diffusion width of the outermost air curtain to prevent the protective air flow from overflowing from the opening, thereby preventing the occurrence of cold hail, and also preventing an increase in the refrigeration load due to overflow. can.
第1図は従来のオープンシヨーケースの縦断面
図、第2図は本発明オープンシヨーケースの縦断
面図、第3図は同要部拡大図、第4図は本発明の
他の実施例を示す縦断面図、第5図は同要部拡大
図、第6図は本発明の更に他の実施例を示す縦断
面図である。
5,6……区画壁、7,8……通路、16,1
7……エアーカーテン、19……流路。
Fig. 1 is a longitudinal cross-sectional view of a conventional open-shallow case, Fig. 2 is a longitudinal cross-sectional view of an open-shallow case of the present invention, Fig. 3 is an enlarged view of the same essential parts, and Fig. 4 shows another embodiment of the present invention. 5 is an enlarged view of the same essential parts, and FIG. 6 is a longitudinal sectional view showing still another embodiment of the present invention. 5, 6... Partition wall, 7, 8... Passage, 16, 1
7...Air curtain, 19...Flow path.
Claims (1)
用の開口に複数本の通路を通過した各空気流を吹
き出して最内層の低温エアーカーテンを含む複層
のエアーカーテンを形成してなるオープンシヨー
ケースにおいて、速度の遅い空気流を通過させる
最外通路と、該通路に相接し前記空気流よりも速
度の速い空気流を通過させる内側通路とを区画す
る区画壁に、この最外、内側両通路を連通させる
流路を形成して最外通路を通過する空気流の一部
を内側通路を通過する空気流により内側通路に導
入するようにしたことを特徴とするオープンシヨ
ーケース。1. An opening formed on one side of the storage room for storing and taking out products by blowing out each airflow that has passed through multiple passages to form a multi-layered air curtain including a low-temperature air curtain in the innermost layer. In the case, a partition wall that partitions an outermost passageway through which a slow airflow passes and an inner passageway adjacent to the passageway through which an airflow faster than the airflow passes through the outermost passage, An open show case characterized in that a flow path is formed to communicate both inner passages, and a part of the air flow passing through the outermost passage is introduced into the inner passage by the air flow passing through the inner passage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10164079A JPS5625669A (en) | 1979-08-08 | 1979-08-08 | Open showcase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10164079A JPS5625669A (en) | 1979-08-08 | 1979-08-08 | Open showcase |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5625669A JPS5625669A (en) | 1981-03-12 |
JPS6218828B2 true JPS6218828B2 (en) | 1987-04-24 |
Family
ID=14305975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10164079A Granted JPS5625669A (en) | 1979-08-08 | 1979-08-08 | Open showcase |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5625669A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816168A (en) * | 1981-07-23 | 1983-01-29 | 株式会社岡村製作所 | Double air curtain type refrigerating case having air velocity balancing adjusting function |
JPS61278840A (en) * | 1985-06-04 | 1986-12-09 | Dainippon Screen Mfg Co Ltd | Original illuminating device for copying device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5130214U (en) * | 1974-08-28 | 1976-03-04 | ||
JPS5195654A (en) * | 1975-01-24 | 1976-08-21 | ||
JPS5384254A (en) * | 1976-12-29 | 1978-07-25 | Fuji Electric Co Ltd | Cold air circulating type open shoe case |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211751Y2 (en) * | 1973-08-17 | 1977-03-15 |
-
1979
- 1979-08-08 JP JP10164079A patent/JPS5625669A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5130214U (en) * | 1974-08-28 | 1976-03-04 | ||
JPS5195654A (en) * | 1975-01-24 | 1976-08-21 | ||
JPS5384254A (en) * | 1976-12-29 | 1978-07-25 | Fuji Electric Co Ltd | Cold air circulating type open shoe case |
Also Published As
Publication number | Publication date |
---|---|
JPS5625669A (en) | 1981-03-12 |
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