JPH0663683B2 - Water circulation type ice maker - Google Patents
Water circulation type ice makerInfo
- Publication number
- JPH0663683B2 JPH0663683B2 JP3890891A JP3890891A JPH0663683B2 JP H0663683 B2 JPH0663683 B2 JP H0663683B2 JP 3890891 A JP3890891 A JP 3890891A JP 3890891 A JP3890891 A JP 3890891A JP H0663683 B2 JPH0663683 B2 JP H0663683B2
- Authority
- JP
- Japan
- Prior art keywords
- ice
- ice making
- water
- making
- plate
- 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
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- Other Air-Conditioning Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は水循環式製氷機に関し、
特に、製氷時における泥状もしくは綿状の氷の発生を防
止するための新規な改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water circulation type ice making machine,
In particular, it relates to a new improvement for preventing the generation of mud-like or cotton-like ice during ice making.
【0002】[0002]
【従来の技術】一般に、水を循環しつつ製氷板において
氷を製造する、いわゆる水循環式製氷機においては、泥
状もしくは綿状氷の発生があり、この現象が極めて不都
合なものであることは周知の通りである。綿状氷もしく
は泥状氷の発生については、例えば、本願と同一出願人
による特公昭58−15706号公報等に詳述されてい
る通り、水循環式製氷機特有の現象であり、流水が冷却
中において、その流水温度が0℃に到達しても製氷部で
結氷されず、更に冷却されて過冷却状態になるため、過
冷却された水が何らかの状態において一瞬の内に、製氷
水タンクを含む水循環系路中で結晶化する現象として知
られている。2. Description of the Related Art Generally, in a so-called water circulation type ice making machine for producing ice on an ice making plate while circulating water, mud-like or cotton-like ice is generated, and this phenomenon is extremely inconvenient. As is well known. The generation of cotton-like ice or mud-like ice is a phenomenon peculiar to a water circulation type ice making machine, as described in, for example, Japanese Patent Publication No. 58-15706 by the same applicant as the present application. In the above, even if the temperature of the flowing water reaches 0 ° C., the ice-making part does not freeze, and is further cooled to be in a supercooled state. Therefore, the supercooled water contains the ice-making water tank in an instant in any state. It is known as a phenomenon of crystallization in the water circulation system.
【0003】即ち、図4及び図5に示す従来の水循環式
製氷機を参照して、上述の現象を以下に具体的に説明す
る。That is, the above phenomenon will be described in detail below with reference to the conventional water circulation type ice making machine shown in FIGS. 4 and 5.
【0004】図4及び図5において、製氷部の一部を構
成する一対の製氷板1は、銅等の熱良導体金属で形成さ
れると共にほぼ垂直状に配設されており、冷却管2は銅
等の熱良導体からなる金属製パイプを蛇管状に曲折させ
て各製氷板1の裏面に溶接等の熱良導結合手段によって
取り付けられている。In FIGS. 4 and 5, a pair of ice-making plates 1 forming a part of the ice-making section are made of a heat-conductive metal such as copper and are arranged in a substantially vertical shape. A metal pipe made of a good heat conductor such as copper is bent into a serpentine shape and attached to the back surface of each ice making plate 1 by a good heat conducting coupling means such as welding.
【0005】各製氷板1の上部は、山形状の連結部3で
互いに連結されており、この連結部3の上部位置には散
水管4が配設されている。散水管4には多数の小孔5が
形成され、各小孔5から放出された製氷水は、連結部3
上を経て各製氷板1の製氷面1a上を上端部から下端部
に向かって流下される。各製氷面1aを流下した製氷水
は、製氷板1の下方位置に配設された集水樋6内に集め
られてから、タンク7に回収された後、循環ポンプ(図
示せず)によって再び前記散水管4に圧送される。The upper portion of each ice making plate 1 is connected to each other by a mountain-shaped connecting portion 3, and a sprinkler pipe 4 is arranged at the upper position of the connecting portion 3. A large number of small holes 5 are formed in the sprinkler pipe 4, and the ice making water discharged from each small hole 5 is connected to the connecting portion 3
After passing through the top, it flows down on the ice making surface 1a of each ice making plate 1 from the upper end to the lower end. The ice-making water that has flowed down each ice-making surface 1a is collected in a water collecting trough 6 disposed below the ice-making plate 1 and then collected in a tank 7 and then again by a circulation pump (not shown). It is pumped to the sprinkling pipe 4.
【0006】冷却管2は、図示しない圧縮機、凝縮器等
からなる冷凍ユニットによって冷媒を供給され、製氷水
は各製氷面1aを流下する間に、その温度が次第に低下
し、製氷水が十分に冷却すると製氷板1の表面に氷板8
が成長する。氷板8が所定の大きさに成長したことを温
度センサー、フロートスイッチ等の公知の製氷完了検知
手段(図示せず)によって検知されると、除氷工程に入
り、各製氷板1内の上部に配設された除氷水管9の各小
孔10から除氷水が各製氷板1の裏面に供給されて、冷
却管2及び各製氷板1が加熱され、氷板8の、製氷板1
の製氷面1aに対する接触面が僅かに融解して、氷板8
を落下させ回収する。尚、通常、除氷工程時にヒータ等
の加熱手段や、圧縮機からの高温吐出ガスを冷却管2内
に供給するホットガス手段が併用される。The cooling pipe 2 is supplied with a refrigerant by a refrigerating unit including a compressor, a condenser and the like (not shown), and the temperature of the ice making water gradually decreases while flowing down each ice making surface 1a, so that the ice making water is sufficient. When cooled to the ice plate 8 on the surface of the ice plate 1
Grows. When the growth of the ice plate 8 to a predetermined size is detected by a known ice making completion detecting means (not shown) such as a temperature sensor or a float switch, the ice removing step is started, and the upper portion of each ice making plate 1 The deicing water is supplied to the back surface of each ice making plate 1 from each small hole 10 of the deicing water pipe 9 provided in the ice making plate 1, the cooling pipe 2 and each ice making plate 1 are heated, and the ice making plate 1 of the ice making plate 1
The contact surface with the ice making surface 1a melts slightly and the ice plate 8
Drop and collect. In addition, usually, a heating means such as a heater and a hot gas means for supplying the high-temperature discharge gas from the compressor into the cooling pipe 2 are used together during the deicing process.
【0007】前述の図4及び図5に示す従来の構成にお
いては、通常、冷却管2は氷の成長状態を均一にするた
め(即ち、製氷水の冷却具合を均一にするため)、ま
た、蛇管状パイプの加工上、等間隔の方が作業工程上有
利であるため、一定の間隔で配設されている。しかし、
本出願人の実験によると、前述の構成では、冷却管2を
均一の間隔で製氷板1に配設すると、製氷水の冷却具合
が均一になるため、製氷水全体に過冷却を生じ易く、そ
のために、泥状氷もしくは綿状氷の発生が生じやすいこ
とが判明している。In the conventional structure shown in FIGS. 4 and 5, the cooling pipe 2 is usually used to make the ice growth state uniform (that is, to make the cooling condition of the ice making water uniform). Since it is more advantageous in the working process to process the serpentine pipes at equal intervals, they are arranged at regular intervals. But,
According to an experiment by the applicant, in the above-mentioned configuration, when the cooling pipes 2 are arranged at the ice-making plate 1 at uniform intervals, the cooling condition of the ice-making water becomes uniform, so that the whole ice-making water is likely to be overcooled. Therefore, it is known that mud ice or cotton ice is likely to be generated.
【0008】次に、この泥状氷もしくは綿状氷の発生メ
カニズムについて更に詳細に説明すると、前述の従来の
冷却管配列を用いた製氷工程において、製氷開始時点に
おいては、外部から給水された水温は、0℃よりかなり
高い水温であり、例えば、説明上T℃とする。このT℃
の水温の製氷水が製氷板1上を流下するうちに、冷却管
2により製氷板1が冷却されているので、徐々にその温
度が低下してくる。つまり、図5に示すように、製氷板
1上の各点A,B,C,D,E,Fを流下する製氷水の
温度を、それぞれT℃,T1℃,T2℃,T3℃,T4℃,
T5℃ とすると、製氷水の温度はT℃>T1℃>T2℃>
T3℃>T4℃>T5℃ のように降下していく。Next, the generation mechanism of this mud ice or cotton ice will be described in more detail. In the ice making process using the above-mentioned conventional cooling pipe arrangement, the temperature of water supplied from the outside at the start of ice making. Is a water temperature considerably higher than 0 ° C., and is T ° C. for explanation. This T ℃
Since the ice making plate 1 is being cooled by the cooling pipe 2 while the ice making water of the water temperature flows down on the ice making plate 1, the temperature thereof gradually decreases. That is, as shown in FIG. 5, the temperatures of the ice making water flowing down the respective points A, B, C, D, E, and F on the ice making plate 1 are T ° C., T 1 ° C., T 2 ° C., and T 3 respectively. ℃, T 4 ℃,
If T 5 ℃, the temperature of ice-making water is T ℃ > T 1 ℃ > T 2 ℃ >
The temperature decreases as T 3 ℃> T 4 ℃> T 5 ℃.
【0009】一方、散水器4から散水された製氷水の温
度は、A点から水平方向への距離に関係なく実質的に一
定である。つまり、A点の温度がT℃であれば、図5に
示したA',A",A"' 点等における温度もT℃であ
り、B点の温度がT1℃であれば、B',B",B"'点も
T1℃である。On the other hand, the temperature of the ice making water sprinkled from the sprinkler 4 is substantially constant regardless of the distance from the point A in the horizontal direction. That is, if the temperature at point A is T ° C., the temperature at points A ′, A ″, A ″ ′ shown in FIG. 5 is also T ° C., and if the temperature at point B is T 1 ° C., then B The points ', B "and B"' are also T 1 ° C.
【0010】更に、F点においてT5℃ まで冷却された
製氷水は、集水樋6を経てタンク7に流下するが、タン
ク7内にはT℃ の製氷水が残っているため、流下した
T5℃の水と混合してその温度を下げ、例えば、T'℃
(但しT℃>T'℃)になって再び散水器4に送られ、
T'℃ の製氷水が散水器から散水され、時間の経過と共
にこの動作を繰り返すことにより、タンク7の水温も徐
々に低下する。Further, the ice-making water cooled to T 5 ° C. at the point F flows down to the tank 7 through the water collecting trough 6, but since the ice-making water at T ° C. remains in the tank 7, it flowed down. Mix with water at T 5 ℃ to lower its temperature, for example, T '℃
(However, T ° C> T '° C) and sent again to the sprinkler 4,
Ice water at T '° C is sprinkled from the sprinkler, and by repeating this operation with the lapse of time, the water temperature in the tank 7 also gradually decreases.
【0011】即ち、従来構成においては、製氷工程の終
了近くでは、製氷板1の製氷面1aに温度に実質的に差
のない多量の製氷水が存在することが分かる。従って、
結氷寸前の温度、例えば、F点の温度が約0℃の場合、
前述のように多量の水を結氷させるのに必要な熱量(約
80cal/g)を一度に、この製氷部では奪う事ができな
いので、0℃の水は凍結することなく、集水樋6を流下
してタンク7内に流入し、タンク7の水温は更に下げら
れる。次に散水された時には、散水水温が更に下がって
いるので、F点においては、例えば−1℃に達するが、
その程度の温度では凍結することなく流下するので、つ
いには過冷却状態となって泥状氷もしくは綿状氷の発生
となる。That is, it can be seen that in the conventional structure, a large amount of ice-making water having substantially no difference in temperature exists on the ice-making surface 1a of the ice-making plate 1 near the end of the ice-making process. Therefore,
When the temperature just before freezing, for example, the temperature at point F is about 0 ° C,
As mentioned above, the amount of heat required to freeze a large amount of water (about 80 cal / g) cannot be taken away at a time by this ice making unit, so the water at 0 ° C will not freeze and the water collecting trough 6 The water temperature of the tank 7 is further lowered by flowing down and flowing into the tank 7. The next time the water is sprayed, the water temperature of the water is still lower, so at point F, for example, it will reach -1 ° C.
At such a temperature, it flows down without freezing, so that it finally becomes a supercooled state and mud ice or cotton ice is generated.
【0012】上述した泥状氷もしくは綿状氷を除去する
ための改善手段として既知の構成は、特開昭55−53
668号公報、特公昭58−15706号公報、実開昭
58−2574号公報、実開昭58−2575号公報及
び特開昭57−142467号公報等に開示されてい
る。A known structure as an improvement means for removing the above-mentioned mud ice or cotton ice is described in JP-A-55-53.
It is disclosed in Japanese Patent Publication No. 668, Japanese Patent Publication No. 58-15706, Japanese Utility Model Laid-Open No. 58-2574, Japanese Utility Model Laid-Open No. 58-2575, Japanese Patent Laid-Open No. 57-142467 and the like.
【0013】即ち、特開昭55−53668号公報に開
示された構成は、製氷板流下後の泥状もしくは綿状氷を
含む未凍結製氷水中に、流下前の製氷水の一部を供給す
ることによって、発生した泥状もしくは綿状氷を消滅さ
せようとしていた。また、特公昭58−15706号公
報に開示された構成は、泥状もしくは綿状氷発生前に表
れる製氷機構の可変因子(例えば、製氷水温度、冷媒温
度等)の特異な変化に着目し、この可変因子を検知手段
によって検知して、その出力信号により、例えば、製氷
水循環ポンプを制御して循環量を所定時間減少もしくは
停止させ、泥状もしくは綿状氷を消滅させようとしてい
た。更に、実開昭58−2574号、実開昭2575号
及び特開昭57−142467号各公報に開示された構
成においては、製氷部の一部に滞留水部を設けていた。That is, according to the configuration disclosed in Japanese Patent Laid-Open No. 55-53668, a part of the ice making water before flowing is supplied to the unfrozen ice making water containing mud-like or cotton-like ice after flowing down the ice making plate. By doing so, he was trying to extinguish the mud or cotton ice that had occurred. In addition, the configuration disclosed in Japanese Patent Publication No. 58-15706 pays attention to a peculiar change of a variable factor (for example, ice making water temperature, refrigerant temperature, etc.) of an ice making mechanism that appears before the occurrence of mud or cotton ice. This variable factor is detected by the detection means, and the output signal thereof is used to control, for example, the ice-making water circulation pump to reduce or stop the circulation amount for a predetermined period of time to eliminate mud or cotton ice. Further, in the structures disclosed in Japanese Utility Model Laid-Open No. 58-2574, Japanese Utility Model Laid-Open No. 2575 and Japanese Patent Application Laid-Open No. 57-142467, a retained water part is provided in a part of the ice making part.
【0014】[0014]
【発明が解決しようとする課題】以上のような従来構成
においては、いずれも泥状もしくは綿状氷の発生を防止
するための完璧な手段とは云えず、種々の問題点を有し
ていた。In the above-mentioned conventional constructions, none of them is a perfect means for preventing the formation of mud or cotton-like ice, and there are various problems. .
【0015】即ち、特開昭55−53668号公報記載
の構成においては、製氷板流下後に泥状もしくは綿状氷
が発生した後において、これを消滅させようとするもの
であるため、十分な効果は期待できず、根本的な解決策
とはならなかった。That is, in the structure described in JP-A-55-53668, after mud-like or cotton-like ice is generated after flowing down the ice making plate, it is intended to disappear, so that a sufficient effect is obtained. Couldn't be expected and wasn't a fundamental solution.
【0016】更に、特公昭58−15706号公報記載
の構成においては、製氷機構の可変因子の検知及び製氷
水循環ポンプの制御に各種の検知手段や制御手段を必要
とするため、構成自体が複雑となり、製作コストの上昇
となっていた。また、一時的に製氷水の循環量を少なく
するため、循環量不足の状態で結氷され、氷の表面に白
い膜が形成されたり、氷表面が凸凹になる等により、氷
の外見が極めて悪くなり、特に飲食に供するには問題が
あると共に、一時的に循環量を減少させるため、製氷能
力を十分に発揮できず、製氷効率が低下していた。Further, in the structure described in Japanese Patent Publication No. 58-15706, various detecting means and control means are required for detecting the variable factors of the ice making mechanism and controlling the ice making water circulation pump, so that the structure itself becomes complicated. , The production cost was rising. In addition, because the amount of circulation of ice making water is temporarily reduced, the ice looks very bad due to freezing of the ice, forming a white film on the surface of the ice, and making the ice surface uneven. In particular, there is a problem in providing food and drink, and the circulation amount is temporarily reduced, so that the ice making capacity cannot be fully exhibited, and the ice making efficiency is reduced.
【0017】また、実開昭58−2574号公報、実開
昭2575号公報及び特開昭57−142467号公報
記載の構成においては、水流が滞留しない場合も生じ、
必ずしも100%その目的を達成することはできなかっ
た。しかも、氷の表面に凹凸部が生じ、外見が見苦し
く、商品価値の低いものとなっていた。Further, in the structures described in Japanese Utility Model Laid-Open No. 58-2574, Japanese Utility Model Laid-Open No. 2575, and Japanese Patent Laid-Open No. 57-142467, there are cases where the water flow does not stay,
It was not always possible to achieve that goal 100%. Moreover, the surface of the ice has irregularities, which makes the appearance unsightly and has a low commercial value.
【0018】前述の各従来構成において、泥状もしくは
綿状氷が発生すると、集水樋6を詰まらせて溢水した
り、タンク7からの溢水も発生し、製氷完了を製氷板1
に設けた温度センサーによって検出する構成の場合に
は、循環ポンプ等を詰まらせることによって、製氷板1
に流下している散水が停止するか、又は、製氷水が極め
て少なくなっていた。そのため、製氷板1が極端な軽負
荷状態となり、製氷板の温度が急降下し、氷ができてい
ないにも拘わらず製氷完了信号を発生してしまうと云う
重大なトラブルが発生していた。In each of the above-mentioned conventional configurations, when mud-like or cotton-like ice is generated, the water collecting gutter 6 is clogged and overflowed, or overflow from the tank 7 is also generated, and the ice making is completed.
In the case of the configuration in which the temperature sensor provided in the is used for detection, the ice making plate 1
The sprinkling of water that had flown into the water had stopped, or the amount of ice making water had become extremely low. Therefore, the ice making plate 1 is in an extremely light load state, the temperature of the ice making plate suddenly drops, and there is a serious problem that an ice making completion signal is generated although ice is not formed.
【0019】更に、泥状もしくは綿状氷が発生すると、
製氷初期において、製氷板1上に水のない状態もしくは
製氷水の極めて少ない状態で凍結した不透明氷が氷板8
に形成され、氷板8の表面が白く曇ったり、凸凹になっ
たりして外観が極めて見苦しく、飲食用としては商品価
値が低下していた。尚、このような現象は製氷完了手段
の如何に拘わらず、共通して発生する問題であった。Further, when mud-like or cotton-like ice is generated,
At the initial stage of ice making, the opaque ice frozen on the ice making plate 1 with no water or a very small amount of ice making water is the ice plate 8
And the surface of the ice plate 8 was clouded white and uneven, and the appearance was extremely unsightly, and the commercial value was lowered for food and drink. Incidentally, such a phenomenon has been a common problem regardless of the ice making completion means.
【0020】[0020]
【課題を解決するための手段】本発明は、以上のような
欠点を速やかに除去するための極めて効果的な手段を提
供することを目的とするもので、この目的を達成するた
めの本発明の要旨とするところは、製氷板の表面にその
上端部から下端部に向かって流下するよう製氷水を循環
供給すると共に、同製氷板の裏面に蛇行状に配設された
冷却管に冷媒を流して、前記製氷板の表面の製氷領域で
製氷を行う水循環流下式製氷機において、前記冷却管
は、前記製氷板の下端部側に冷媒入口を有すると共に、
同冷媒入口から前記冷却管に入った冷媒が、前記製氷板
の上端部から下端部に向かう前記製氷水の流下方向と実
質的に逆方向に流れるように、前記製氷板の前記製氷領
域の実質的に全高にわたって下から上へ延びる配管部分
を有し、同配管部分により氷成長促進部を形成している
流下式製氷機に存する。SUMMARY OF THE INVENTION The present invention aims to provide an extremely effective means for promptly eliminating the above-mentioned drawbacks, and the present invention for achieving this object. The main point of this is that the ice-making water is circulated and supplied to the surface of the ice-making plate from the upper end toward the lower end thereof, and the refrigerant is supplied to the cooling pipes arranged in a meandering shape on the back surface of the ice-making plate. Flowing, in a water circulation downflow type ice making machine for making ice in the ice making region of the surface of the ice making plate, the cooling pipe, while having a refrigerant inlet on the lower end side of the ice making plate,
The refrigerant entering the cooling pipe from the refrigerant inlet flows substantially in the opposite direction to the downward direction of the ice making water from the upper end to the lower end of the ice making plate, so that the ice making area of the ice making plate is substantially the same. In general, it exists in a downflow type ice making machine that has a pipe portion extending from the bottom to the top over the entire height, and the pipe portion forms an ice growth promoting portion.
【0021】[0021]
【作用】製氷水は、製氷板の製氷領域、即ち製氷面を上
方から下方に流れ、その間に冷却管を介して冷媒により
冷却されるので、製氷水は、製氷工程の終了近くでは厳
密に言えば下方ほど温度が低い。Since the ice making water flows from the upper side to the lower side in the ice making area of the ice making plate, that is, the ice making surface, and is cooled by the refrigerant through the cooling pipe in the meantime, the ice making water can be said exactly near the end of the ice making process. The lower the temperature, the lower the temperature.
【0022】一方、冷媒は、冷却管に入口から入って出
口から出るが、入口の冷媒ほど冷却能力は高い。従っ
て、好ましくは冷媒入口から入った冷媒を直ぐ下方から
上方に流して、製氷水の流れ方向と逆にすれば、下方ほ
ど温度の低い製氷水の温度を更に低下させることができ
る。On the other hand, the refrigerant enters the cooling pipe through the inlet and exits through the outlet, and the refrigerant at the inlet has a higher cooling capacity. Therefore, preferably, the temperature of the ice-making water having a lower temperature can be further lowered by making the refrigerant entering from the refrigerant inlet flow from immediately below to above to reverse the flow direction of the ice-making water.
【0023】本発明による冷却管はそのように冷媒を流
す配管部分を有し、これが氷成長促進部として作用し
て、タンク内の水全体が過冷却状態になる前において、
製氷板の製氷面の一部を他の部分よりも早く冷却させ
て、氷核を作り、この氷核から出発して、製氷板全体に
正常な氷を成長させる。The cooling pipe according to the present invention has a pipe portion through which the refrigerant flows in this way, which acts as an ice growth promoting portion before the entire water in the tank becomes supercooled.
A part of the ice making surface of the ice making plate is cooled earlier than other parts to form an ice nucleus, and starting from this ice nucleus, normal ice is grown on the whole ice making plate.
【0024】[0024]
【実施例】以下、図面と共に本発明による水循環式製氷
機の好適な実施例について詳細に説明する。尚、従来例
と同一部分もしくは同等部分については、同一符号を用
いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a water circulation type ice making machine according to the present invention will be described in detail below with reference to the drawings. In addition, the same or equivalent portions as those of the conventional example will be described using the same reference numerals.
【0025】図1は本発明による水循環式製氷機の第1
実施例を示すものであり、図面において符号1で示され
るものは実質的に垂直に配設された一対の製氷板(図に
は一方のみを示す)であり、この製氷板1は銅等の熱良
導体金属で形成されており、冷却管2は銅等の熱良導体
製の金属パイプを蛇管状に曲折させて各製氷板1の裏面
に溶接等の熱良導結合手段によって設けられている。FIG. 1 shows a first embodiment of a water circulation type ice making machine according to the present invention.
1 shows an embodiment, and a reference numeral 1 in the drawings is a pair of substantially vertically arranged ice making plates (only one of which is shown in the drawing). The ice making plate 1 is made of copper or the like. The cooling pipe 2 is made of a heat conductive metal, and the cooling pipe 2 is provided on the back surface of each ice making plate 1 by a heat conductive coupling means such as welding by bending a metal pipe made of a heat conductive metal such as copper into a serpentine shape.
【0026】各製氷板1の上部は、山形状の連結部3で
互いに連結されており、同連結部3の上方位置には散水
管4が配設されている。散水管4には多数の小孔5が形
成され、各小孔5から放出された製氷水は、連結部3を
経て各製氷板1の製氷面1a上に流下される。製氷面1
aを流下した製氷水は、製氷板1の下部位置に配設され
た集水樋6内に集められて、タンク7に回収された後、
適宜の循環ポンプ(図示せず)によって再び前記散水管
4に圧送され、上述の工程もしくは過程を繰り返す。更
に、製氷板1間の上部には、小孔(図示せず)を有する
除氷水管9が配設され、除氷工程時に、除氷水を各製氷
板1の裏側に供給する。The upper portion of each ice making plate 1 is connected to each other by a mountain-shaped connecting portion 3, and a sprinkler pipe 4 is arranged above the connecting portion 3. A large number of small holes 5 are formed in the water sprinkling pipe 4, and the ice making water discharged from each small hole 5 flows down onto the ice making surface 1 a of each ice making plate 1 via the connecting portion 3. Ice making surface 1
The ice-making water that has flowed down a is collected in the water collecting trough 6 arranged at the lower position of the ice-making plate 1, and after being collected in the tank 7,
It is again pressure-fed to the sprinkling pipe 4 by an appropriate circulation pump (not shown), and the above-mentioned process or process is repeated. Further, a deicing water pipe 9 having small holes (not shown) is arranged between the ice making plates 1 to supply deicing water to the back side of each ice making plate 1 during the deicing process.
【0027】冷却管2は、図示しない圧縮機、凝縮器等
からなる冷凍ユニットによって冷媒を供給されるように
接続されているが、冷媒入口となるこの冷却管2の最下
部の配管部分、即ち、製氷板1の最下部において、冷却
管2が他の部分よりも密状態に曲折して形成された氷成
長促進部2aが配設されている。The cooling pipe 2 is connected so as to be supplied with a refrigerant by a refrigeration unit including a compressor, a condenser and the like (not shown), and the lowermost pipe portion of the cooling pipe 2 serving as a refrigerant inlet, that is, At the lowermost portion of the ice making plate 1, an ice growth promoting portion 2a formed by bending the cooling pipe 2 in a denser state than other portions is provided.
【0028】この氷成長促進部2aは、冷却管2の前記
配管部分が他の部分より密であるため、後述する氷成長
促進部2cを除くと、氷成長促進部2a以外における前
記製氷板1の部分よりも温度が低い状態である。尚、こ
の氷成長促進部2aは、他の氷成長促進部2cがあれば
必ずしも必要ではない。Since the pipe portion of the cooling pipe 2 of this ice growth promoting portion 2a is denser than other portions, the ice making plate 1 other than the ice growth promoting portion 2a is excluded except for the ice growth promoting portion 2c described later. The temperature is lower than that of the part. The ice growth promoting section 2a is not always necessary if there is another ice growth promoting section 2c.
【0029】次に、この氷成長促進部2cの設置位置に
ついて説明すると、水の流れについては、散水器4の小
孔5から噴出した製氷水は、製氷板1上を徐々に冷却さ
れながら流下していくので、製氷板1の最下部において
その水温が最も低くなる。一方、冷媒ガスの流れについ
て考えてみると、冷却管2に流入する冷媒ガスは、矢印
で示すその入口の近傍において、冷却効果が最も高い。
従って、氷成長促進部2cは、製氷板1の最下部におい
て、冷媒がその入口から冷却管2に入った直後か、冷媒
が製氷板1を最初にほぼ横方向に横断した直後の位置に
設定するのが最も好適である。Next, the installation position of the ice growth promoting section 2c will be described. Regarding the flow of water, the ice making water ejected from the small holes 5 of the sprinkler 4 flows down while being gradually cooled on the ice making plate 1. Therefore, the water temperature becomes the lowest at the bottom of the ice making plate 1. On the other hand, considering the flow of the refrigerant gas, the refrigerant gas flowing into the cooling pipe 2 has the highest cooling effect in the vicinity of the inlet indicated by the arrow.
Therefore, the ice-growth promoting unit 2c is set at the lowest position of the ice making plate 1 immediately after the refrigerant enters the cooling pipe 2 through its inlet or immediately after the refrigerant first crosses the ice making plate 1 substantially in the lateral direction. Most preferably.
【0030】即ち、図1の第1実施例においては、冷媒
入口を製氷板1の最下部に有する冷却管2は、蛇がとぐ
ろを巻いたような状態で蚊取り線香状に、厳密に言え
ば、製氷板1の四角形状に沿ってほぼ四角状に配設され
ていて、最初に製氷板1を横方向に横断してから上方に
延びて、この上方に延びる配管部分が氷成長促進部2c
を構成している。この氷成長促進部2cは、製氷水の流
下方向に沿って縦方向に延びていて、前述した氷成長促
進部2aと同種の効果を奏する目的のために配設されて
いるが、その効果は氷成長促進部2aより更に向上して
いると云えるものである。尚、冷却管2の配管部分が2
回目に製氷板1を下方から上方に横断する部分も、最初
に述べたものより弱いが氷成長促進効果を有する。That is, in the first embodiment of FIG. 1, the cooling pipe 2 having the refrigerant inlet at the lowermost portion of the ice making plate 1 is a mosquito coil in a state where a snake is wound, strictly speaking, The ice-making plate 1 is arranged in a substantially quadrangular shape along the quadrangular shape, and first crosses the ice-making plate 1 laterally and then extends upward.
Are configured. The ice growth promoting portion 2c extends in the longitudinal direction along the flow direction of the ice making water, and is arranged for the purpose of achieving the same effect as that of the ice growth promoting portion 2a described above. It can be said that it is further improved than the ice growth promoting section 2a. In addition, the piping portion of the cooling pipe 2 is 2
The portion that crosses the ice making plate 1 from the lower side to the upper side at the second time also has an ice growth promoting effect, although it is weaker than that described at the beginning.
【0031】図2の第2実施例においては、冷却管2
は、図1の場合と同様に最初に製氷板1の最下部を横方
向に横断してから、冷媒が製氷水の流れと逆方向方向に
流れるように、上方に延びて、氷成長促進部2cを形成
しており、その後、図示のように蛇行して製氷板1から
離れる。In the second embodiment of FIG. 2, the cooling pipe 2
First, as in the case of FIG. 1, first, the lowermost part of the ice making plate 1 is transversely traversed first, and then, the refrigerant is extended upward so that the refrigerant flows in the direction opposite to the flow of the ice making water. 2c is formed and then meanders as illustrated to separate from the ice making plate 1.
【0032】図3の第3実施例においては、冷却管2
は、冷媒入口の直ぐ近傍で上方に延びてから最上部で下
方に折り返し、上述したように冷媒が流れる氷成長促進
部2cを形成している。In the third embodiment of FIG. 3, the cooling pipe 2
Extends upward in the vicinity of the refrigerant inlet and then folds downward at the uppermost portion to form the ice growth promoting portion 2c through which the refrigerant flows as described above.
【0033】前述の図1〜3に示した各実施例において
は、散水器4の小孔5から流下する水は冷却管2に直交
して流下する水流Dと、冷却管2の縦方向氷成長促進部
2cに沿って流下する水流Eが存在する。この場合、水
流Dは冷却管2によって段階的に冷やされているのみで
あるが、水流Eは氷成長促進部2cにより連続的に冷却
されているので、水流Dより水流Eの方が良く冷却さ
れ、より効果的に製氷水の一部を部分冷却することがで
きる。In each of the embodiments shown in FIGS. 1 to 3 described above, the water flowing down from the small holes 5 of the sprinkler 4 flows down perpendicularly to the cooling pipe 2 and the longitudinal ice in the cooling pipe 2. There is a water stream E flowing down along the growth promoting portion 2c. In this case, the water flow D is only cooled stepwise by the cooling pipe 2, but since the water flow E is continuously cooled by the ice growth promoting section 2c, the water flow E is cooled better than the water flow D. Therefore, a part of the ice making water can be cooled more effectively.
【0034】尚、水流Eの流量を水流Dの流量より少な
くしておくと、より一層効率的な冷却効果を得ることが
できる。このように流量を少なくするための具体的な構
成として、散水器4の小孔5の大きさを水流Eに相当す
る部分のみ、他の小孔5の径より小径としたり、水流D
の部分における小孔5のピッチを水流Eの小孔5のピッ
チよりも小さくする手段を採用することができる。If the flow rate of the water stream E is set to be smaller than that of the water stream D, a more efficient cooling effect can be obtained. As a specific configuration for reducing the flow rate, the size of the small holes 5 of the sprinkler 4 is set to be smaller than the diameter of the other small holes 5 only in the portion corresponding to the water flow E or the water flow D.
It is possible to employ a means for making the pitch of the small holes 5 in the portion of (3) smaller than the pitch of the small holes 5 of the water flow E.
【0035】次に、以上のような構成において、本発明
による水循環式製氷機を作動させて製氷を行う場合につ
いて述べると、製氷工程が開始され、製氷水が冷却され
ていくと共に、製氷板1の製氷面1aが結氷寸前の温度
(0℃〜2℃)に達した時、従来構成では製氷水の冷却具
合が均一であるので、水の凍結潜熱(80cal/g)を製氷
用水から一度に奪うことができず、過冷却状態となって
いたが、本発明の実施例によれば、氷成長促進部2cに
対応する縦状の製氷面部分(特にその最下部)を流下する
製氷水が他の製氷面部分を流下する製氷水よりも冷却さ
れるため、循環水温が過冷却状態に至る前か、わずかに
過冷却状態に入った時に、氷成長促進部2cに対応する
製氷面部分に核氷となる薄氷膜が成長する。従って、こ
の製氷面部分に薄氷膜が形成されることによって、薄氷
膜を中心に正常な氷が成長するため、泥状もしくは綿状
氷の発生が防止できる。Next, in the above-mentioned structure, the case where the water circulation type ice maker according to the present invention is operated to make ice will be described. When the ice making process is started and the ice making water is cooled, the ice making plate 1 The ice-making surface 1a of this is the temperature just before freezing
When it reaches (0 ℃ ~ 2 ℃), with the conventional configuration, the cooling condition of the ice making water is uniform, so the latent heat of freezing (80 cal / g) of water cannot be taken from the ice making water at once, and it is in a supercooled state. However, according to the embodiment of the present invention, the ice making water flowing down the vertical ice making surface portion (especially the lowermost portion) corresponding to the ice growth promoting portion 2c flows down the other ice making surface portions. Since it is cooled more than water, a thin ice film that becomes nuclear ice grows on the ice making surface portion corresponding to the ice growth promoting section 2c before the circulating water temperature reaches the supercooled state or when the circulating water temperature slightly enters the supercooled state. . Therefore, by forming a thin ice film on the ice-making surface portion, normal ice grows around the thin ice film, so that it is possible to prevent generation of mud-like or cotton-like ice.
【0036】尚、前述の氷成長促進部2cの形状もしく
は配列については、本実施例に各々開示された構成のみ
に限らず、多少の変更を加えた場合でも、同様の効果を
得ることができるので、そのような場合には、かかる変
形もしくは変更も本発明の範囲内に含まれることは述べ
るまでもない。The shape or arrangement of the ice growth promoting portion 2c described above is not limited to the configuration disclosed in each of the present embodiments, and similar effects can be obtained even if some changes are made. Therefore, it goes without saying that in such a case, such variations or modifications are also included in the scope of the present invention.
【0037】[0037]
【発明の効果】本発明による水循環式製氷機は、以上の
ような構成と作用を備えているため、次のような種々の
効果を奏することができる。Since the water circulation type ice making machine according to the present invention has the above-mentioned structure and operation, it can exert various effects as follows.
【0038】(1) 何等の追加部品を必要とすることな
く、簡単な構成で泥状もしくは綿状氷の発生を未然に防
止することができる。(1) It is possible to prevent the generation of mud-like or cotton-like ice with a simple structure without requiring any additional parts.
【0039】(2) 製氷面に透明な核氷を作ることがで
きるため、非常に透明で肌が滑らかな商品価値の高い氷
を得ることができる。(2) Since transparent nuclear ice can be produced on the ice-making surface, it is possible to obtain ice that is highly transparent and has a smooth skin and a high commercial value.
【0040】(3) 従来のように、一時的に製氷水流を
止めたり減少させたりする必要がないため、通常の製氷
状態のままで泥状もしくは綿状氷の発生を未然に防ぐこ
とができ、何等の製氷能力低下も生じない。(3) Since it is not necessary to temporarily stop or reduce the flow of ice making water as in the conventional case, it is possible to prevent the generation of mud-like or cotton-like ice in the normal ice-making state. , No decrease in ice-making ability occurs.
【0041】(4) 従来のように、孔、凹部等による水
滞留手段を設ける必要がなく、氷核により氷を成長させ
ることができるため、製氷した氷の表面には何等の凸部
や凹部を生じることがなく、極めて表面の滑らかな氷を
得ることができる。(4) Since it is not necessary to provide water retention means such as holes and recesses as in the prior art, and ice can be grown by the ice nuclei, no protrusions or recesses are formed on the surface of the ice making. It is possible to obtain ice having a very smooth surface without causing the ice.
【図1】本発明による水循環式製氷機の第1実施例を示
す概略正面図。FIG. 1 is a schematic front view showing a first embodiment of a water circulation type ice making machine according to the present invention.
【図2】同じく第2実施例を示す正面図。FIG. 2 is a front view showing a second embodiment of the same.
【図3】同様に第3実施例を示す正面図。FIG. 3 is a front view similarly showing a third embodiment.
【図4】従来構成の水循環式製氷機を示すための側断面
図。FIG. 4 is a side sectional view showing a water circulation type ice maker having a conventional configuration.
【図5】図4に示した水循環式製氷機の正面図。5 is a front view of the water circulation type ice maker shown in FIG. 4. FIG.
1 製氷板 1a 製氷面 2 冷却管 2c 氷成長促進部 1 Ice plate 1a Ice surface 2 Cooling pipe 2c Ice growth promotion section
Claims (1)
部に向かって流下するよう製氷水を循環供給すると共
に、同製氷板(1)の裏面に蛇行状に配設された冷却管
(2)に冷媒を流して、前記製氷板(1)の表面の製氷
領域で製氷を行う水循環流下式製氷機において、前記冷
却管(2)は、前記製氷板(1)の下端部側に冷媒入口
を有すると共に、同冷媒入口から前記冷却管(2)に入
った冷媒が、前記製氷板(1)の上端部から下端部に向
かう前記製氷水の流下方向と実質的に逆方向に流れるよ
うに、前記製氷板(1)の前記製氷領域の実質的に全高
にわたって下から上へ延びる配管部分を有し、同配管部
分により氷成長促進部(2c)を形成している流下式製
氷機。1. Ice-making water is circulated and supplied to the surface of the ice-making plate (1) so as to flow downward from its upper end to its lower end, and cooling is provided in a meandering shape on the back surface of the ice-making plate (1). In a water circulation downflow type ice making machine for making a refrigerant flow in a pipe (2) to make ice in an ice making area of a surface of the ice making plate (1), the cooling pipe (2) is provided at a lower end side of the ice making plate (1). A refrigerant inlet into the cooling pipe (2) from the refrigerant inlet, the refrigerant flowing in a direction substantially opposite to the downward direction of the ice making water from the upper end to the lower end of the ice making plate (1). A downflow type ice making machine which has a pipe portion extending from bottom to top over substantially the entire height of the ice making region of the ice making plate (1) so as to flow, and which forms the ice growth promoting portion (2c). Machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3890891A JPH0663683B2 (en) | 1991-02-12 | 1991-02-12 | Water circulation type ice maker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3890891A JPH0663683B2 (en) | 1991-02-12 | 1991-02-12 | Water circulation type ice maker |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8893385A Division JPS61250475A (en) | 1985-04-26 | 1985-04-26 | Water circulation type ice machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04214161A JPH04214161A (en) | 1992-08-05 |
JPH0663683B2 true JPH0663683B2 (en) | 1994-08-22 |
Family
ID=12538303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3890891A Expired - Lifetime JPH0663683B2 (en) | 1991-02-12 | 1991-02-12 | Water circulation type ice maker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0663683B2 (en) |
-
1991
- 1991-02-12 JP JP3890891A patent/JPH0663683B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04214161A (en) | 1992-08-05 |
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