JP2594178B2 - Frozen case - Google Patents
Frozen caseInfo
- Publication number
- JP2594178B2 JP2594178B2 JP2324178A JP32417890A JP2594178B2 JP 2594178 B2 JP2594178 B2 JP 2594178B2 JP 2324178 A JP2324178 A JP 2324178A JP 32417890 A JP32417890 A JP 32417890A JP 2594178 B2 JP2594178 B2 JP 2594178B2
- Authority
- JP
- Japan
- Prior art keywords
- cooler
- cool air
- air
- air passage
- wall
- 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 - Lifetime
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
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
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)
- Freezers Or Refrigerated Showcases (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は貯蔵室に収納された食品を冷凍温度に維持す
る冷凍ケース及びその冷気循環方法に関する。The present invention relates to a refrigeration case for maintaining food stored in a storage room at a refrigeration temperature and a method of circulating cold air therefor.
（ロ）従来の技術 特公平１−39032号公報（F25D 21/04）の低温ショー
ケースには、前面に開閉自在な扉を有する断熱壁と、こ
の断熱壁の内壁に沿って配置され、冷却器及び送風機を
備えた冷気通路及び棚を備えた貯蔵室とを形成する区画
板と、、前記貯蔵室の前面上下両縁に沿って対をなす吹
出、吸込両口とを備え、前記貯蔵室の前面に沿って低温
のエアーカーテンを形成した上部ケースが具備されてお
り、かゝる構成の上部ケースは扉に２枚乃至３枚の透明
板と熱線反射皮膜と併用した冷凍仕様のものである。(B) Conventional technology The low-temperature showcase disclosed in Japanese Patent Publication No. 1-39032 (F25D 21/04) has an insulating wall having a door that can be opened and closed on the front and a cooling wall arranged along the inner wall of the insulating wall. A partition plate forming a storage room provided with a cool air passageway and a shelf provided with a vessel and a blower; and a pair of outlets and suction ports formed along a pair of upper and lower edges of the front surface of the storage room. There is an upper case with a low-temperature air curtain formed along the front surface of the door, and the upper case with such a configuration is a refrigerator type having two or three transparent plates and a heat ray reflective coating on the door. is there.
（ハ）発明が解決しようとする課題 上記従来の技術によれば、エアーカーテンはその内側
流及び外側流が略静止状態の空気を巻き込む作用、即ち
界面に沿って連続的に渦流が発生して略静止状態の空気
を流動させる作用がある関係上、エアーカーテンと扉と
の間の空間は負圧となる一方で、エアーカーテンと区画
板との間の空間、即ち貯蔵室も負圧となる。かゝる状態
で扉を開放すると、湿気を含んだ外気が外側流の巻込作
用によってエアーカーテンに進入した後、その一部が内
側流の巻込作用にて貯蔵室に進入し、貯蔵室の棚の上方
及び下方を循環してエアーカーテンに帰還することにな
る。この循環において、棚の上方及び下方を流れる冷気
に含まれた湿気は、冷気が後方に向けて流れ次に前方に
向けて流れる間、冷凍温度に維持された食品に霜として
付着するために開扉の度に食品に付着した霜が徐々に成
長して氷になり、この結果、食品が氷のために販売でき
ない課題が生じた。(C) Problems to be Solved by the Invention According to the above-mentioned conventional technique, the air curtain has an action in which the inner flow and the outer flow entrain substantially stationary air, that is, a vortex is continuously generated along the interface. The space between the air curtain and the door has a negative pressure due to the function of flowing air in a substantially stationary state, while the space between the air curtain and the partition plate, that is, the storage room also has a negative pressure. . When the door is opened in such a state, after the outside air containing moisture enters the air curtain by the entrainment of the outside flow, a part of the air enters the storage room by the entrainment of the inside flow, and the storage room Circulates above and below the shelf and returns to the air curtain. In this circulation, the moisture contained in the cold air flowing above and below the shelves opens up as frost adheres to food maintained at the frozen temperature while the cold air flows backward and then forward. Each time the door is opened, the frost attached to the food gradually grows into ice, resulting in a problem that the food cannot be sold due to the ice.
本発明は上記課題を解決することを目的とするもので
ある。An object of the present invention is to solve the above problems.
（ニ）課題を解決するための手段 上記課題を解決するための手段として本発明は、前面
に開口を有した断熱壁にて構成された本体と、前記断熱
壁の内壁より適当間隔を存して区画板を配設して形成さ
れた冷気通路及び貯蔵室と、前記冷気通路内に配置され
た冷却器及び送風機とを形成した冷凍ケースにおいて、
前記冷気通路の背部区域の上方に送風機を配置し、前記
区画板の背壁に複数の吸気穴を形成すると共に、吸気穴
を通過した冷気が前記冷却器を通過せずに前記送風機を
通過するように冷気通路内に帰還する構成を採用した。(D) Means for Solving the Problems As means for solving the above problems, the present invention provides a main body constituted by a heat insulating wall having an opening on the front surface and an appropriate distance from the inner wall of the heat insulating wall. In a refrigeration case formed with a cold air passage and a storage room formed by disposing a partition plate, and a cooler and a blower arranged in the cold air passage,
A blower is disposed above the back area of the cool air passage, a plurality of intake holes are formed in the back wall of the partition plate, and the cool air that has passed through the intake holes passes through the blower without passing through the cooler. The structure which returns to the inside of a cold air passage was adopted.
（ホ）作用 上記手段によれば、冷凍ケース内を強制循環させる冷
気は吹出口から吸込口に至るエアーカーテンを形成して
冷却器に帰還し、熱交換されて再び吹出口から吹き出さ
れる主流を形成する一方、吸気穴はエアーカーテンの内
側流からの冷気の一部を分けて棚の上方及び下方を後方
に向かって流れ、冷気通路の冷却器の下流区域に至り冷
却器で熱交換され吹出口に至る主流の冷気に合流する副
流を形成させる作用をなす。(E) Function According to the above means, the cool air forced to circulate in the freezing case forms an air curtain extending from the outlet to the inlet, returns to the cooler, undergoes heat exchange, and is again discharged from the outlet. On the other hand, the intake hole separates a part of the cool air from the inside flow of the air curtain, flows upward and downward on the shelf toward the rear, and reaches the downstream area of the cooler in the cool air passage, where heat is exchanged by the cooler. It acts to form a substream that joins the mainstream cold air to the outlet.
（ヘ）実施例 以下図面に基づいて本発明の実施例を説明すると、第
１図乃至第３図に示す１は前面に開口６を有する断熱壁
４にて形成され前記開口に開閉自在な透明扉８を複数設
けてなる上部の冷凍ケース２と上面に開口７を有する断
熱壁５にて形成される下部の冷凍ケース３と、この上下
部両冷凍ケースの両側面に設けられる側壁９とにより本
体を構成してなる低温ショーケースで、前記両ケースは
各々の断熱壁4,5内壁より適当間隔を存して区画板10,11
を配設して冷却器12,13、送風機14,15を設置する冷気通
路16,17と貯蔵室18,19とを形成するとともに、開口6,7
両端に対向する吹出口20,21と吸込口22,23とを各形成
し、各独立した強制循環冷気流で前記両開口を閉塞する
エアーカーテンA1,A2を夫々形成するとともに、両貯蔵
室を冷凍温度に冷却するものである。前記両貯蔵室は同
じ又は異なった温度管理を行なってよい。(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 3, reference numeral 1 denotes a transparent wall which is formed by a heat insulating wall 4 having an opening 6 on the front surface and which can be opened and closed. An upper freezing case 2 provided with a plurality of doors 8, a lower freezing case 3 formed by a heat insulating wall 5 having an opening 7 on the upper surface, and side walls 9 provided on both side surfaces of the upper and lower freezing cases. A low-temperature showcase comprising a main body, the two cases being separated from the inner walls of the heat insulating walls 4 and 5 at appropriate intervals by partition plates 10 and 11.
The coolers 12, 13 and the cool air passages 16, 17 for installing the blowers 14, 15 and the storage chambers 18, 19 are formed, and the openings 6, 7
The outlets 20, 21 and the inlets 22, 23 opposed to both ends are formed respectively, and the air curtains A1, A2 for closing the openings with the independent forced circulating cold air flow are formed, respectively, and both storage chambers are formed. It cools to the freezing temperature. The two compartments may have the same or different temperature controls.
24は前記貯蔵室18に配置された棚で、前記区画板10の
背壁部10Aに固着された縦方向に細長い左右一対の支柱2
5にて支持されている。26は前記貯蔵室18を左右に仕切
る透明な仕切板で、開扉時における圧力変化が貯蔵室18
の右側から左側、又はその逆に移行しないようにするも
のである。この仕切板26の前端は開口６の中央を左右に
仕切る縦支柱27と間隔を存しており、この間隔を通った
冷気は吸込口22に至ることになる。Reference numeral 24 denotes a shelf arranged in the storage room 18, and a pair of left and right columns 2 vertically elongated and fixed to the back wall portion 10A of the partition plate 10.
Supported by 5. Reference numeral 26 denotes a transparent partition plate for partitioning the storage room 18 from side to side.
From the right side to the left side or vice versa. The front end of the partition plate 26 has an interval with a vertical column 27 that partitions the center of the opening 6 to the left and right, and the cool air passing through the interval reaches the inlet 22.
28は前記背壁部10Aに沿って縦方向に形成された複数
の吸気穴で、該穴は前記冷気通路16の冷却器12の下流区
域と連通する。29は前記冷却器12と背壁部10Aとの間に
配置された金属製の間隔子で、前記冷却器12と背壁部10
Aとの間に前記吸気穴28の一部と連通する吸気路30を形
成する。前記間隔子29は上壁31に多数の通気穴32を形成
しており、この通気穴32は吸気路30と前記冷気通路16の
冷却器12の下流区域と連通させる。35は前記間隔子29の
下壁34の下方に配置され、前記冷却器12の除霜時に通電
されるシーズヒータからなる電気ヒータで、前記冷却器
12の空気入口となる前面下部に相対するよう左右一対の
金属製固定具35に保持されている。36は前記電気ヒータ
33と背壁部10Aとの間に配置された金属製の熱遮へい板
で、上端の前方を直角に曲った折曲部37を前記下壁34に
取り付けて背壁部10Aと間隔を存し、この背壁部10Aに対
する電気ヒータ33からの熱伝達を緩和する。Reference numeral 28 denotes a plurality of intake holes formed in the longitudinal direction along the back wall portion 10A, and the holes communicate with a section of the cool air passage 16 downstream of the cooler 12. 29 is a metal spacer disposed between the cooler 12 and the back wall 10A,
An intake passage 30 communicating with a part of the intake hole 28 is formed between the intake passage A and the air inlet A. The spacer 29 has a large number of ventilation holes 32 formed in the upper wall 31, and the ventilation holes 32 communicate with the intake passage 30 and the downstream region of the cooler 12 in the cool air passage 16. An electric heater 35 is disposed below the lower wall 34 of the spacer 29 and includes a sheathed heater that is energized when the defroster 12 is defrosted.
It is held by a pair of left and right metal fixtures 35 so as to face the lower part of the front surface serving as the 12 air inlets. 36 is the electric heater
A metal heat shield plate disposed between 33 and the back wall portion 10A, a bent portion 37 having a front end bent at a right angle is attached to the lower wall 34 so as to leave an interval from the back wall portion 10A. The heat transfer from the electric heater 33 to the back wall 10A is reduced.
かゝる構成によれば、冷凍ケース３内を強制循環され
る冷気は第１図に示す如く吹出口20から吸込口22に至る
エアーカーテンA1を形成して冷却器12に帰還し、熱交換
されて再び吹出口22か吹き出される主流とエアーカーテ
ンA1の内側流から分れて棚24の上方及び下方を後方に向
かって流れ、吸気穴28から冷気通路16の冷却器12の下流
区域に至り冷却器12で熱交換され吹出口20に至る冷気に
合流する副流とからなる。According to such a configuration, the cool air forcedly circulated in the freezing case 3 forms an air curtain A1 from the outlet 20 to the inlet 22 as shown in FIG. After being separated from the main flow blown out from the outlet 22 and the inside flow of the air curtain A1 and flowing backward and upward above and below the shelf 24, from the intake hole 28 to the downstream area of the cooler 12 in the cool air passage 16 The heat is exchanged by the cooler 12 and is a substream that joins the cool air reaching the outlet 20.
かゝる循環において、第１図及び第２図の二点鎖線の
如く扉８を開放すると、エアーカーテンA1を形成する冷
気は開放に伴なう圧力変化でもってその一部が第１図一
点鎖線矢印の如く開口６を通して外部に洩れ、一方この
洩れ空気と同量の外気がエアーカーテンA1及びこのエア
ーカーテンA1の内側流の巻込作用によって第１図及び第
２図の白抜き矢印で示す如く貯蔵室18に進入し、この進
入外気は前記副流に含まれて吸気穴28から冷気通路16に
至ることになる。In such a circulation, when the door 8 is opened as shown by a two-dot chain line in FIGS. 1 and 2, a part of the cold air forming the air curtain A1 is changed due to the pressure change accompanying the opening. As shown by the dashed arrow, the air leaks to the outside through the opening 6, while the same amount of outside air as the leaked air is indicated by the outline arrow in FIGS. 1 and 2 by the action of the air curtain A1 and the inside flow of the air curtain A1. As described above, the air enters the storage chamber 18, and the entering outside air is included in the substream and reaches the cool air passage 16 from the intake hole 28.
従って、開扉時に冷凍ケース３内に進入し貯蔵室18を
横断する外気は後方に向かって流れ吸気穴28から冷気通
路16に吸い込まれることになるので、貯蔵室18内におけ
る進入湿気の横断距離は従来に比べて半分となり、冷凍
温度に維持された食品への着霜を大幅に減らすことがで
きる。Therefore, when the door is opened, the outside air that enters the freezing case 3 and crosses the storage chamber 18 flows rearward and is sucked into the cool air passage 16 from the intake hole 28, so that the crossing distance of the ingress moisture in the storage chamber 18 is determined. Is reduced by half compared to the prior art, and frost formation on food maintained at a frozen temperature can be greatly reduced.
又、開扉時に侵入した湿気のうち一部は貯蔵室18を横
断して吸気穴28から冷気通路16の冷却器12の下流区域に
至る関係上、冷却器12への単位時間当りの着霜量を少な
くして除霜回数を軽減できる。In addition, a part of the moisture that has entered when the door is opened crosses the storage room 18 and reaches the cooling air passage 16 downstream of the cooler 12 from the intake hole 28, so that the frost is formed on the cooler 12 per unit time. By reducing the amount, the number of times of defrosting can be reduced.
（ト）発明の効果 上述した本発明によれば、次に列挙する効果を奏す
る。(G) Effects of the Invention According to the present invention described above, the following effects can be obtained.
開扉時に進入した湿気のうち一部は貯蔵室を横断して
吸気穴から冷気通路の冷却器の下流区域に至る関係上、
冷却器への単位時間当りの着霜量を少なくして除霜回数
を軽減できる。Some of the moisture that entered at the time of opening the door crossed the storage room and from the intake hole to the area downstream of the cooler in the cool air passage,
The amount of frost on the cooler per unit time can be reduced to reduce the number of times of defrosting.
図面は何れも本発明の実施例を示し、第１図は第３図Ａ
−Ａ断面図、第２図は第３図Ｂ−Ｂ断面図、第３図は低
温ショーケースの全体斜視図、第４図は要部斜視図、第
５図は要部拡大断面図、第６図は冷却器周囲の斜視図で
ある。 ４……断熱壁、８……扉、10……区画板、10A……背
壁、12……冷却器、14……送風機、16……冷気通路、18
……貯蔵室、24……棚、25……支柱、28……吸気穴。The drawings show an embodiment of the present invention, and FIG.
-A sectional view, Fig. 2 is a sectional view of Fig. 3B-B, Fig. 3 is an overall perspective view of the low-temperature showcase, Fig. 4 is a perspective view of an essential part, Fig. 5 is an enlarged sectional view of an essential part, FIG. 6 is a perspective view around the cooler. 4 ... heat insulating wall, 8 ... door, 10 ... partition board, 10A ... back wall, 12 ... cooler, 14 ... blower, 16 ... cold air passage, 18
... storage room, 24 ... shelf, 25 ... pillar, 28 ... intake hole.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 塚田 憲正 大阪府守口市京阪本通２丁目18番地 三 洋電機株式会社内 (56)参考文献 実開 昭60−73090（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Norimasa Tsukada 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.
Claims (1)
本体と、前記断熱壁の内壁より適当間隔を存して区画板
を配設して形成された冷気通路及び貯蔵室と、前記冷気
通路内に配置された冷却器及び送風機とを形成した冷凍
ケースにおいて、前記冷気通路の背部区域の上方に送風
機を配置し、前記区画板の背壁に複数の吸気穴を形成す
ると共に、吸気穴を通過した冷気が前記冷却器を通過せ
ずに前記送風機を通過するように冷気通路内に帰還する
構成を具備したことを特徴とする冷凍ケース。1. A main body constituted by a heat insulating wall having an opening on a front surface, a cold air passage and a storage room formed by disposing a partition plate at an appropriate distance from an inner wall of the heat insulating wall, In a refrigeration case formed with a cooler and a blower arranged in the cool air passage, a blower is arranged above a back area of the cool air passage, and a plurality of intake holes are formed in a back wall of the partition plate, A refrigeration case comprising a configuration in which cool air that has passed through an intake hole returns to a cool air passage so as to pass through the blower without passing through the cooler.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2324178A JP2594178B2 (en) | 1990-11-26 | 1990-11-26 | Frozen case |
| KR1019910017024A KR920010235A (en) | 1990-11-26 | 1991-09-30 | Freezing case and its cold air circulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2324178A JP2594178B2 (en) | 1990-11-26 | 1990-11-26 | Frozen case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190074A JPH04190074A (en) | 1992-07-08 |
| JP2594178B2 true JP2594178B2 (en) | 1997-03-26 |
Family
ID=18162958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2324178A Expired - Lifetime JP2594178B2 (en) | 1990-11-26 | 1990-11-26 | Frozen case |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2594178B2 (en) |
| KR (1) | KR920010235A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002098461A (en) * | 2000-07-21 | 2002-04-05 | Fujitsu General Ltd | Electric refrigerator |
| JP5023025B2 (en) * | 2008-09-03 | 2012-09-12 | 日立アプライアンス株式会社 | refrigerator |
| WO2016107700A1 (en) * | 2014-12-31 | 2016-07-07 | Arcelik Anonim Sirketi | A refrigerator comprising an evaporator with improved refrigeration efficiency |
| JP6993797B2 (en) * | 2017-06-21 | 2022-01-14 | 東芝ライフスタイル株式会社 | refrigerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073090U (en) * | 1983-10-24 | 1985-05-23 | 富士電機株式会社 | refrigerated case |
-
1990
- 1990-11-26 JP JP2324178A patent/JP2594178B2/en not_active Expired - Lifetime
-
1991
- 1991-09-30 KR KR1019910017024A patent/KR920010235A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04190074A (en) | 1992-07-08 |
| KR920010235A (en) | 1992-06-26 |
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