JPS59195076A - Method of detecting ice making of ice machine - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明は、キューブアイスと呼はれる角氷をつくる製
氷装置の製氷検出方法に関するものてあする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ice making detection method for an ice making apparatus that makes ice cubes called cube ice.

角氷をつくる製氷装置は、一般にセル方式（ジェット水
流噴出方式、ジェットスプレ一方式、ジェット噴流方式
の場合もある）と呼はれている製氷機のことであり、ス
ナック、喫茶店、ホテル、レストラン、厨房室等で実用
に供されている。The ice making equipment that makes ice cubes is generally called a cell type ice maker (sometimes using a jet water jet type, a jet spray type, or a jet type), and is used for snacks, coffee shops, hotels, and restaurants. It is put into practical use in kitchens, etc.

セル方式の製氷装置は、１回の製氷に必要な量の水を水
槽に一部溜め、この水を循環ポンプによって水皿に送り
込み、水皿上面に設けた多数の噴射小孔から、−２５°
Ｃ位の極低温に冷却された製氷皿の下面に設けた多数の
角形の小室にそれぞれ噴出し、この製氷皿からの戻り水
を水皿で受け、水皿に設けた水戻り孔を経て水槽に落と
し、水槽→循環ポンプ→水皿−製氷皿−水皿→水槽の経
路で製氷水を繰り返し循環させることにより、製氷皿の
下面に形成された多数の製氷小室の隔壁の周囲から徐々
に氷を成長させる。このようにして、氷が所定の大きさ
に充分成長し、製氷小室にほぼいっばいになると、製氷
開始時に予め設定されているタイマのタイムアツプ、製
氷皿自体や氷自体の温度が所定の温度まで下がったこと
を検出するサーモスタット、サーミスタの作動、冷凍機
の１吸い込み正分（低圧側圧力）が所定の圧力まで下か
ったことを検出する圧力スイッチの作動、水槽の貯水量
が所定の量まで減少したことを検出する水型カスイッチ
、フロートスイッチの作動等によつて製氷の終了を検出
し、自動的に循環ポンプを停止して水の噴射を止めると
共に、正逆回転可能なギヤモータ等の可逆モータによっ
て、水皿の一端を回転軸として水皿を製氷皿より強制的
に離し、水皿の他端（開放端）が所定の位置まで下降し
、その位置で可逆モータの回転を停止させる。次に、製
氷皿の上面側に設けたエバポレータの冷却管内に冷凍機
からホットガスを流すと、周囲を僅かにとかされた角氷
か自重で製氷皿の小室から離脱し、傾斜した水皿の」二
面を滑りながら、貯水庫へ落下する。氷が製氷皿から落
ちると、製氷皿の温度」１昇をサーモスタット、サーミ
スタ等の脱水検出装装置で検出し、ｉｊＪ動モータを作
動させて、水皿の上面か製氷皿の下面に接触するよう開
いていた水皿を閉じる。水皿の他端が所定の位置まで上
昇すると、その位置で可逆モータを停止させると共に、
製氷皿のエバポレータの冷却管に流れていたホットガス
を止め、かわりに冷凍機の凝縮器から膨張弁、キャピラ
リチューブ等の減圧素子を介して液冷媒を冷却管内に流
して製氷皿を極低温（約−２５℃）に冷却ｆる。そして
、再ひ、最初の状態に戻り、給水管に接続された給水電
磁弁が開いて水槽に製氷水が入れられ、所定量の水か入
ると予め設定されているタイマのタイムアツプ或いは水
槽の水位や水量を検出するフロースイッチ、水重力スイ
ッチの動作等により、給水電磁弁を閉じて給水を停止し
、再ひ循環ポンプが作動して、水皿の噴射孔から製氷皿
の下面に設けた製氷小室に水が噴射され、一連の製氷動
作が自動的に行なわれるようになっている。なお、これ
らの制御シーケンスや制御方法等については種々の方式
か提案されている。A cell-type ice making device partially stores the amount of water required for one batch of ice making in a water tank, sends this water to a water tray using a circulation pump, and -25 °
The ice cubes are cooled to an extremely low temperature of about C, and the water is ejected into a large number of square chambers on the bottom of the ice cube tray.The water that returns from the ice cube tray is received by a water tray, and then flows through the water return hole in the water tray into the water tank. By repeatedly circulating the ice-making water in the path of water tank -> circulation pump -> water tray - ice tray - water tray -> water tank, the ice is gradually removed from around the partition walls of the numerous ice-making chambers formed on the underside of the ice tray. grow. In this way, when the ice has grown sufficiently to a predetermined size and the ice making chamber is almost completely filled, the timer set in advance at the start of ice making will time up and the temperature of the ice tray itself and the ice itself will reach the predetermined temperature. The thermostat and thermistor operate to detect when the pressure has dropped, the pressure switch operates to detect when the refrigerator's 1 suction (low pressure side pressure) has fallen to a predetermined pressure, and the water tank's water storage level reaches a predetermined level. The end of ice making is detected by the operation of the water type water switch, float switch, etc., which detects the decrease, and the circulation pump is automatically stopped to stop water injection. A reversible motor uses one end of the water tray as the rotation axis to forcibly separate the water tray from the ice cube tray, and the other end (open end) of the water tray lowers to a predetermined position, at which point the reversible motor stops rotating. . Next, when hot gas is flowed from the refrigerator into the cooling pipe of the evaporator installed on the top side of the ice cube tray, the slightly melted ice cubes will detach from the small chamber of the ice cube tray due to their own weight, and the ice cubes will be released from the small chamber of the ice cube tray on the slanted water tray. ”Sliding on two sides, it falls into the reservoir. When the ice falls from the ice tray, a dehydration detection device such as a thermostat or thermistor detects that the temperature of the ice tray increases by 1'', and the ijJ motor is activated so that the ice comes into contact with the top surface of the ice tray or the bottom surface of the ice tray. Close the open water tray. When the other end of the water tray rises to a predetermined position, the reversible motor is stopped at that position, and
The hot gas that was flowing into the cooling pipe of the ice tray's evaporator is stopped, and instead liquid refrigerant is flowed from the refrigerator's condenser into the cooling pipe through an expansion valve, a pressure reducing element such as a capillary tube, and the ice tray is heated to an extremely low temperature ( Cool to about -25°C. Then, it returns to the initial state again, the water supply solenoid valve connected to the water supply pipe opens and ice making water is poured into the water tank, and when a predetermined amount of water enters, the preset timer time-up or the water level of the water tank is activated. The water supply solenoid valve is closed and the water supply is stopped by the operation of the flow switch that detects the water volume, the water gravity switch, etc., and the water supply is stopped by closing the water supply solenoid valve, and the circulation pump is activated again to make ice from the water tray's injection hole to the bottom of the ice tray. Water is sprayed into the small chamber, and a series of ice-making operations are automatically performed. Note that various systems have been proposed for these control sequences and control methods.

このように、従来のセル方式の製氷装置においては、製
氷終了の、検出はタイマ、サーモスタット、サーミスタ
、圧力スイッチ、水重力スイッチ、フロースイッチ等の
作動に、よって行なう方法か一般に採用されている。と
ころが、我国においては、季節の移り変わりによって周
囲の気温や水温が著しく変化し、製氷装置に組み込まれ
ている冷凍サイクルの運転状態、例えば製氷皿中の令妹
の蒸発温度と圧力、コンプレッサの吸い込み圧力（低圧
圧力）、凝縮器中の冷媒の、凝縮温度と圧力、コンプレ
ッサの吐き出し圧力（高圧圧力）等も太きく変化する。As described above, in conventional cell ice making apparatuses, the end of ice making is generally detected by the operation of a timer, thermostat, thermistor, pressure switch, water gravity switch, flow switch, etc. However, in our country, the surrounding air and water temperatures change significantly with the changing seasons, and the operating status of the refrigeration cycle built into the ice making equipment, such as the evaporation temperature and pressure of ice cubes in the ice tray, and the suction pressure of the compressor, can change significantly. (low pressure), the condensing temperature and pressure of the refrigerant in the condenser, the discharge pressure of the compressor (high pressure), etc., also change significantly.

この結果、製氷装置の製氷能力や製氷効率更には氷ので
きあがり状態も大きく変動することになり、年間を通じ
ていつも一定の状態とはならない。従って、水槽に貯水
される製氷用の水温の変化は勿論のこと、冷凍サイクル
に使用している冷凍機の凝縮器か空冷式の場合には冷却
空気の温度変化に、また水冷式の場合には冷却水の温度
変化にそれぞれ対応して製氷検出装置を調節しなけれは
、年間を通していつも略一定の形状や大きさの水を゛つ
くることができない。As a result, the ice-making capacity and ice-making efficiency of the ice-making device, as well as the state of ice formation, vary greatly, and do not always remain constant throughout the year. Therefore, not only changes in the temperature of the water stored in the water tank for ice making, but also changes in the temperature of the condenser of the refrigerator used in the refrigeration cycle or the cooling air in the case of an air-cooled type, and changes in the temperature of the cooling air in the case of a water-cooled type. Unless the ice-making detection device is adjusted in response to changes in the temperature of the cooling water, it is not possible to produce water with a substantially constant shape and size throughout the year.

また、タイマ式の検出装置の場合は、例えば夏は設定時
間を長く、一方冬は短くし、サーモスタット式、サーミ
スタ式、圧力スイッチ式の場合は、例えば夏は感知温度
や圧力を大きく、−万冬は小さくするという具合に、そ
の時期の気温や水温に応じて時間や温度や圧力を調整す
る必要があり、年間はもとより月間や１日の気温、水温
の変化が太きいときには、その都度製氷検出装置の作動
値を設定しなければならないという欠点がある。In addition, in the case of a timer-type detection device, for example, the setting time is set longer in the summer and shorter in the winter, and in the case of a thermostat-type, thermistor-type, or pressure switch-type, the sensing temperature and pressure are increased, for example, in the summer. In winter, it is necessary to adjust the time, temperature, and pressure according to the air and water temperatures at that time. A disadvantage is that the operating value of the detection device must be set.

また、製氷検出装置で設定すべき時間の長短、温度や圧
力の高低は、殆んどその時の製氷用の水温と凝縮用の空
気又は水の温度との相関関係で決まるから、両者の温度
の組合せに応じて、その都度最適の作動値に厳密に設定
することは現実には不可能であり、製氷装置本来の性能
が十分に発揮されず、効率の悪い運転状態となるケース
が圧倒的に多い。In addition, the length of time and temperature and pressure that should be set in the ice-making detection device are mostly determined by the correlation between the ice-making water temperature and the condensing air or water temperature at that time. In reality, it is impossible to strictly set the optimal operating values for each combination, and there are overwhelmingly cases where the original performance of the ice making equipment is not fully demonstrated and the operation is inefficient. many.

他方、水重力スイッチ方式のものは、氷が製氷皿に形成
された多数の製氷小室の中で成長していくにつれ、その
製氷小室の内壁に向かって循環水を噴射している水皿に
設けた多数の噴射小孔の上部が段々と氷でぶさかれて行
き、その噴射Ｗ目前が短かくなっていくことに着目し、
噴射小孔の上部のふさがり具合によって、言い換えれは
噴射距離が予め定めたある値になった時に循環ポンプか
ら押し出される噴射水の圧力が高まることによって、水
）ＫＪの側面に設けたオバーフロー用の放出ノズルから
循環水を水槽の外に排出させ、水槽内の水力ｆ減少しく
言い換えれは水槽の貯水量カ≦減少しン、その水の重さ
か予め定めた値まで軽くなること（こヨリ、アクチュエ
ータースイッチを作動させて製氷の終了を検出している
。この水重力スイ゛ンチ式の場合は、製氷装置の運転状
態か悪くなる夏等の高温時に当然のことながら、氷の出
来も悪くなる不能となる。また、噴射水の圧力力）上列
、することによって放水ノズルから循環水をオーｔ＜　
−７Ｄ−させているため、ポンプの押し上＆ｊ”Ｎ＠　
、Ｉコとその１児係が・亀めて密接であり、電源周、波
数のＪ草し１や電ｊ玉変動或いはポンプ自体の過熱等（
こよる（易、４り０旨〕ｊの微妙な変化によって検出精
反力）左右され、誤動（’ｐしやＪ−いという欠点があ
る。On the other hand, the water-gravity switch type is equipped with a water tray that injects circulating water toward the inner walls of the ice-making chambers as the ice grows in the many ice-making chambers formed in the ice-making tray. We focused on the fact that the upper part of the large number of small injection holes was gradually covered with ice, and the area in front of the injection W became shorter.
Depending on how the upper part of the injection hole is blocked, in other words, when the injection distance reaches a predetermined value, the pressure of the injection water pushed out from the circulation pump increases, causing the overflow discharge provided on the side of the KJ to increase. By discharging the circulating water from the nozzle to the outside of the aquarium, the hydraulic force in the aquarium decreases.In other words, the amount of water stored in the aquarium decreases, and the weight of the water decreases to a predetermined value. The end of ice making is detected by operating the water-gravity switch type. Naturally, during high temperatures such as summer when the operating condition of the ice making equipment deteriorates, the ice production also deteriorates. (In addition, the pressure force of the jetted water) on the upper row automatically circulates water from the water discharge nozzle.
-7D- Because the pump is pushed up &j”N@
, I and her child are extremely close to each other, and there may be fluctuations in the power supply frequency, wave number, fluctuations in the electric power supply, overheating of the pump itself, etc.
It has the disadvantage that the detection force is affected by subtle changes in the detection force, resulting in erroneous results.

フロートスイッチ式のものは、水４曹−の７Ｊり（立の
ｆ化をｌ皮面レベルスイッチで監視し、水面力Ｓ　Ｑ−
ｒ　定のレベルまで丁がつ１ここと（こより製うにの糸
＜７を４灸出するものである。水槽の貯水ｉ　ｉま、ｊ
ｍ　３にのｆｊｐｌ、　ｂ金時には循環ポンプの運転開
始によって急激に変化し、またそれに続く製氷途中では
製氷皿に設けた多数の製氷小室の内壁面に比較的順調に
氷か成長して行き、その分だけ着実に水か減少して行く
ため、ポンプの運転開始時はどではないにしても、比較
的顕著に水位は変化するが、肝心の製氷終了時には製氷
皿の内壁面は氷の成長につれて厚い氷に覆われており、
これが断熱側と同じ作用をするため氷の成長が極めて遅
くなり、当然水位の変化も微少となって検出精度は非常
に悪く、所望の氷が出来ていないのに製氷の終了を検出
したり、これとは逆に、所望の氷か出来ているのに製］
１（の終了を検出しなかったりして、安定性に欠けると
（１′□う欠屯かあった。The float switch type uses 7J of water (4 degrees Celsius) to monitor the rise of F with a surface level switch, and adjusts the water surface force SQ-
r It is a method of ejecting 4 pieces of moxibustion to a certain level.
At m 3, fjpl, and b, there is a sudden change in temperature due to the start of operation of the circulation pump, and during subsequent ice-making, ice grows relatively smoothly on the inner walls of the numerous ice-making chambers provided in the ice-making tray. Since the water level steadily decreases by that amount, the water level changes relatively noticeably when the pump starts operating, but when the important point is to finish making ice, the inner wall of the ice tray is covered with ice. It is covered with thick ice,
Since this has the same effect as the insulation side, ice growth is extremely slow, and of course the change in water level is also very small, resulting in very poor detection accuracy. On the contrary, even though the desired ice is already made]
There was a lack of stability due to failure to detect the end of (1').

この発明は、以上の事情に鑑みなされたもので、製氷用
の水の温度や凝縮器の冷却空颯又は冷却ｒＪ＜の昌度変
化に影響されず、年間を通して調整力１不要となり、し
かも誤検出や検出不能等の問題を起こさない高精度、高
安定性の製氷装置の製氷侠出方法を提供することを目的
とするものである。This invention was made in view of the above circumstances, and is not affected by changes in the temperature of ice-making water, the cooling air of the condenser, or the degree of cooling rJ<, eliminates the need for adjustment force 1 throughout the year, and furthermore, The object of the present invention is to provide a highly accurate and highly stable ice making method for an ice making device that does not cause problems such as detection or undetectability.

即ち、この発明は、水槽に貯えた水を製氷皿に噴射する
ための噴射ノズルと、噴射された水を水槽に戻すための
水戻り孔を備えた水皿の下方（こ、水戻り孔からの水を
流入する水案内容器を設け、この水案内容器内に流入す
る水の茄を監視し、その水量か所定の体になることによ
り製氷の終了を検出するようにしたことを特徴とするも
のである。That is, the present invention provides a method for dispensing water at the bottom of the water tray (from the water return hole to A water guide container is provided into which water flows, and the volume of water flowing into the water guide container is monitored, and the end of ice making is detected when the amount of water reaches a predetermined level. It is something.

以下、この発明を添付図面に示す一実施例に基づいて説
明する。なお、図面は、この発明に係る製氷装置の原理
構造を示すものであり、理解を容易にするためこの発明
に関する部分のみを取り出し、その一部を断面図で示し
たものである。The present invention will be described below based on an embodiment shown in the accompanying drawings. Note that the drawings show the principle structure of the ice-making device according to the present invention, and in order to facilitate understanding, only the parts related to the present invention are taken out and a part thereof is shown in a sectional view.

図ボのように、断熱材１て一部が被覆された製氷装置２
は、下部に製氷された氷を貯える貯氷室（ストッカー）
３を設けている。この貯水室３の」１万には例えばアル
ミニウムを成形加工して作った製氷皿を設け、製氷皿４
の下部にＣま水皿５力Ｓ当接するよう配置されている。As shown in the figure, the ice making device 2 is partially covered with insulation material 1.
is an ice storage chamber (stocker) that stores the ice made at the bottom.
There are 3. For example, an ice tray made by molding aluminum is installed in the water storage chamber 3.
The water tray 5 is placed in contact with the lower part of the water tray 5.

　　＝ 製氷皿４は多数の製氷小室・６に分離され、各製氷小室
６に対応して水皿５には、製氷小室６のほぼ中央に向か
って水を噴射するための噴射小孔を有する噴射ノズル７
と、噴射ノズル７の噴射小孔の近傍の外側に、製氷小室
６に噴射した水を水槽８に戻すための適当数の循環水戻
り孔９と、給水時に給水ノズル１０から水皿５の端部上
面に供給される水を水槽８及び水案内容器１１に流入さ
せるための適当数の水流人孔１２とを設けている。= The ice making tray 4 is divided into a large number of ice making compartments 6, and the water tray 5 corresponding to each ice making compartment 6 has an injection hole for spraying water toward the approximate center of the ice making compartment 6. Nozzle 7
and an appropriate number of circulating water return holes 9 on the outside near the small injection hole of the injection nozzle 7 for returning the water injected into the ice making chamber 6 to the water tank 8; An appropriate number of water flow holes 12 are provided on the top surface of the unit for allowing water to flow into the water tank 8 and the water guide container 11.

上記水皿５の下方には多数の循環水戻り孔９の全部又は
一部からの水を流入させる水案内８器１１を水皿５に連
結して設け、水案内容器１１の最底部或いはその近傍の
適当箇所に水の流水孔１３を形成している。この水案内
容器１１の下方には、水皿５に連結して水案内容器１１
よりも十分に大きい容量の水槽（ウォータタンク）８を
設けており、水槽８には水皿５の循環水戻り孔９からの
戻り水、水案内容器１１の流水孔１３からの水、水案内
容器１１からオバーフローした水及び給水時に水皿５の
端部上面及び流水孔１３を介して給水ノズル１０からの
水が流入される。この水槽８の下方の近傍には、水槽８
の水を水皿５に設けた噴射ノズル７に供給するポンプ１
４を配置している。A water guide 8 device 11 is provided below the water tray 5 and is connected to the water tray 5 to allow water to flow in from all or part of a large number of circulating water return holes 9. Water flow holes 13 are formed at appropriate locations nearby. Below this water guide container 11, a water guide container 11 is connected to the water tray 5.
A water tank 8 with a capacity sufficiently larger than that is provided, and the water tank 8 includes return water from the circulating water return hole 9 of the water tray 5, water from the water flow hole 13 of the water guide container 11, and water from the water guide container 11. Water that overflows from the container 11 and water from the water supply nozzle 10 flow in through the upper end surface of the water tray 5 and the water flow hole 13 during water supply. Near the bottom of this water tank 8 is a water tank 8.
A pump 1 supplies water to a spray nozzle 7 provided in a water tray 5.
4 is placed.

このポンプ１４は適当な数例は部利（図示省略〕を介し
て水皿５の側面に固定されている。また、水槽８の下方
には、ギヤモータ（図示省１′＠）の回転によって水皿
らが開き、それと−緒に水槽８が斜め下方に傾斜した際
に水槽Ｂ内のたまり水を排出させる排出口１５からの水
及び土部の水ユニットから飛散した水を受ける排水皿１
６を設けており、排水皿５からの水と貯水槽３からの水
とは排水管１７に導かれる。In some suitable examples, this pump 14 is fixed to the side surface of the water tray 5 via a part (not shown).In addition, below the water tank 8, water is supplied by rotation of a gear motor (1'@ not shown). When the dishes open and the water tank 8 tilts diagonally downward, a drainage dish 1 receives water from the outlet 15 for draining accumulated water in the water tank B and water scattered from the water unit in the soil area.
6 is provided, and water from the drain tray 5 and water from the water storage tank 3 are led to a drain pipe 17.

」１記製氷皿４の上部には、製氷皿４を冷却する冷媒又
は力旧戻シするホットカスを流す冷媒配管１８１　を設
けている。また、水案内′容器１１の内部には容器１１
内の液位を検出するフロースイッチ等の第１液ムγ検出
器１９を設けており、液位検出器１９は所定以下の液位
を検出すると、製氷が終了したことを示す製氷終了信号
を発する。さらに、水槽８の液位を検出するフロースイ
ッチ等の第２液位検出器２０を譚けており、製氷の開始
に先立って行なわれる給水時に水槽８内の液位か１回の
製氷に必要な所定値となるように、給水バイブ２１と給
水ノズル１０を介して行なわれる給水電磁弁２２からの
給水量を電気的に制御づ−る。1. A refrigerant pipe 181 is provided at the top of the ice tray 4 to flow a refrigerant for cooling the ice tray 4 or a hot dregs for cooling the ice tray 4. Furthermore, a container 11 is provided inside the water guide container 11.
A first liquid gamma detector 19 such as a flow switch is provided to detect the liquid level in the ice cube, and when the liquid level detector 19 detects a liquid level below a predetermined level, it outputs an ice making end signal indicating that ice making has ended. emanate. Furthermore, a second liquid level detector 20 such as a flow switch that detects the liquid level in the water tank 8 is used, and the liquid level in the water tank 8 is checked when water is supplied prior to the start of ice making. The amount of water supplied from the water supply electromagnetic valve 22 via the water supply vibrator 21 and the water supply nozzle 10 is electrically controlled so that it reaches a predetermined value.

なお、上記水案内容器１１の流水孔１２から水槽８への
流水量、即ち噴射ノズル７から製氷小室６に噴射された
水が、全部又は必要に応じて選定された一部の循環水戻
り孔９を介して、水案内容器１１に流入する流入量より
も十分に小さくなるように、流水孔１３の口径は予め所
定の大きさに設定しである。従って、各製氷小室６に十
分に氷か形成されていなければ、水皿５の土部に穿設さ
れた循環水戻り孔９は氷でふさかれていないため、所定
量の戻り水が水案内容器１１に流入し、水案内容器９の
水はオバーフロー面より水槽８内にこほれ落ちオバーフ
ロー状態を維持する。このようにして、製氷が進行し製
氷小室６に十分に氷か形成されてくると、循環水戻り孔
９か氷で閉基され、］」径が小さくなるか或いは完全に
ふさがってしまう。この結果、循環水戻り孔９　から水
案内容器１１に流入する水量が著しく減少し、ついには
流水孔１３から水槽８に排出される水量よりも減少し、
水案内容器１１内の液位が所定のレベルまで下がるから
、この液位の低下を第１液位検出器１９で検出し、この
検出信号を割部１回路（図示省ｌ’１３）に発信して製
氷が終了したことを知らせる。Note that the amount of water flowing from the water flow hole 12 of the water guide container 11 to the water tank 8, that is, the amount of water injected from the injection nozzle 7 into the ice-making chamber 6, may be reduced by all or part of the circulating water return hole selected as necessary. The aperture of the water flow hole 13 is set in advance to a predetermined size so that it is sufficiently smaller than the amount of water flowing into the water guide container 11 via the water flow hole 9 . Therefore, if sufficient ice is not formed in each ice-making chamber 6, the circulating water return hole 9 drilled in the soil of the water tray 5 is not blocked by ice, and a predetermined amount of return water will flow through the water guide. The water in the water guide container 9 flows into the container 11 and drips into the water tank 8 from the overflow surface to maintain an overflow state. In this way, as ice making progresses and enough ice is formed in the ice making chamber 6, the circulating water return hole 9 is closed with ice, and its diameter becomes smaller or becomes completely blocked. As a result, the amount of water flowing into the water guide container 11 from the circulating water return hole 9 is significantly reduced, and finally becomes smaller than the amount of water discharged from the water flow hole 13 into the water tank 8.
Since the liquid level in the water guide container 11 falls to a predetermined level, this drop in the liquid level is detected by the first liquid level detector 19, and this detection signal is transmitted to the split section 1 circuit (l'13, not shown). to notify that ice making has finished.

この発明は、以上のような構成であり、以下にその動作
を説明する。The present invention has the above configuration, and its operation will be explained below.

水案内容器１１の水位の低下により第１液位検出器１９
が作動し、製氷の終了を検出すると、制御卸回路は、検
出信号を受信して作動し、水循環ポンプ１４を停止させ
ると共に、給水電磁弁２２及び可逆モータ（図示省略）
を作動させる。可逆モータの回転により、一端を回動可
能に支持されている水皿５は、可逆モータの回転：ｌｌ
＋に連結されているカム機構によつ丁その他端（開放端
）を押し下けられ、氷結し合っている製氷皿４から無理
やり引き離される。この水皿５の開放端はカム機構の適
当な箇所にその一端を係止きれたスプリングによって吊
られているので、水皿５はカム機構でＲ放端を押し下り
られて製氷皿４から強；ｑ：ｔｌ的に離反させられた際
に急敞に下方に落ちることはなく、可逆モータの回転速
度に同期してゆっくりと下かる。Due to a decrease in the water level in the water guide container 11, the first liquid level detector 19
is activated and detects the end of ice making, the control wholesale circuit receives the detection signal and activates, stopping the water circulation pump 14 and shutting down the water supply solenoid valve 22 and reversible motor (not shown).
Activate. The water tray 5, whose one end is rotatably supported by the rotation of the reversible motor, is rotated by the rotation of the reversible motor.
The other end (open end) of the ice tray is pushed down by the cam mechanism connected to the +, and the ice cube trays 4 are forcibly separated from each other. The open end of the water tray 5 is suspended by a spring whose one end is fully locked to a suitable location on the cam mechanism, so the water tray 5 is pushed down the R open end by the cam mechanism and is pushed away from the ice tray 4. ;q: When separated in terms of tl, it does not fall downward suddenly, but slowly falls in synchronization with the rotational speed of the reversible motor.

上記水皿５が開かれると、水皿５に連結されている水案
内容器１１、水槽８及び循環ポンプ１４も一緒に下がり
、水槽Ｂ内に貯よっていた残り水は排出口１５から排出
皿１６の」−に捨てられると共に、開かれた電磁弁２２
を介して傾斜した水皿５の上面に水をかけ、水皿５の」
二面を洗浄する。When the water pan 5 is opened, the water guide container 11, water tank 8 and circulation pump 14 connected to the water pan 5 are also lowered together, and the remaining water stored in the water tank B is drained from the drain port 15 to the drain pan 16. The solenoid valve 22 which is thrown away and opened
Sprinkle water on the top surface of the slanted water tray 5 through the
Wash both sides.

洗浄した水は水ｕｎ５の開放端に設けた流水孔１３から
排水■１１６の上に流れ落ちて捨てられる。このように
して、可逆モータの回転によって水皿６が所定位置まで
下降して完全に開かれると、上記カム機構に連結して設
けられたカムスイッチ等のスイッチ機構が動作し、可逆
モータを停止させると共に、冷凍サイクルに設けたホッ
トガス電磁弁を開き、圧縮機から吐出さ４しるホットカ
スを製氷皿４の冷媒配管１８に流し、製氷小室６から水
を離脱させる。ホットガスによって氷の周ＩＪＪＪか溶
は製氷小室６の内壁面から前、れると、多数の角氷は自
重によって殆んど同時（こ水皿５の上に落下し、傾斜し
た上面を滑りながら貯水室゛３に落ち込む。The washed water flows down from the water hole 13 provided at the open end of the water un5 onto the drain 116 and is discarded. In this way, when the water tray 6 is lowered to a predetermined position and completely opened by the rotation of the reversible motor, a switch mechanism such as a cam switch connected to the cam mechanism is operated to stop the reversible motor. At the same time, a hot gas electromagnetic valve provided in the refrigeration cycle is opened, and the hot gas discharged from the compressor flows into the refrigerant pipe 18 of the ice tray 4, and water is removed from the ice making chamber 6. When the hot gas melts the ice from the inner wall of the ice-making chamber 6, many ice cubes almost simultaneously fall onto the water tray 5 due to their own weight, sliding on the sloping top surface. Fall into water storage chamber 3.

製氷皿４から氷が落ちると、まだ流れ続けているホット
ガスによって製氷皿４の温度が更に上昇し、圧縮機の吸
込み圧力も高くなるので、製氷皿４の温度や圧縮機の吸
込側の圧力が脱水の終了を示す所定の設定値まで上昇し
たことを、製氷皿の表ｍ１等の適当な箇所に取りイ」け
たサーモスタット、サーミスタや、圧縮機の吸込配管に
取Ｕけた圧力スイッチ着の脱水検出装置で検出し、脱）
ｋが終了したことを制御回路に発信する。脱水の終了信
号発せられると、側倒回路は、先の水皿５の下降時とは
逆の方向になるよう可逆モータを作動させる。When the ice falls from the ice tray 4, the temperature of the ice tray 4 further increases due to the hot gas that is still flowing, and the suction pressure of the compressor also increases, so the temperature of the ice tray 4 and the pressure on the suction side of the compressor increase. A thermostat, thermistor, or a pressure switch attached to the compressor suction pipe indicates that the water has risen to a predetermined setting value indicating the end of dehydration. Detected by a detection device and removed)
It sends a message to the control circuit that k has ended. When the dewatering end signal is issued, the side tilting circuit operates the reversible motor so that the water tray 5 moves in the opposite direction to the previous lowering direction.

従って、水１１１１５はその開放端をカム機構に係止さ
れたスプリングによって吊り上げられゆっくりと」ニゲ
ｉして、製氷皿４の下面と接触ｆる位置まで閉しる。水
皿５が」１昇すると、これに連結されている水案内容器
１１、水槽８、循環ポンダ１３も一緒に」二かり、この
過程で給水ノズル１０から水皿５の土面に圧水し、製氷
皿４の下面と接触する而の汚れを洗浄した後、排水皿１
６及び排水管１７を介して製氷機外に捨てられていた水
か、水皿５の水流人孔１２或いは水皿５の開放端に設け
られている流水孔１３を通り、直接水槽８内に流れ込み
貯水されると共に、水の一部は水流人孔１２を通り水案
内容器１１内にも分流し、流水孔１３を通り間接的に水
槽Ｂ内に流れ込み貯水される。このとき、給水電磁弁２
２に接続されている水道等の給水系統の水圧が高い等の
理由で給水ノズル１０からの給水量が多い場合は、水案
内容器１１の水位が上昇するため、そのオバーフロー面
からも水がこほれ落ち水槽８に流れ込み貯水される。Therefore, the open end of the water 11115 is lifted up by a spring that is engaged with a cam mechanism, and the water 11115 slowly swells until it closes to a position where it contacts the bottom surface of the ice tray 4. When the water tray 5 rises, the water guide container 11, water tank 8, and circulation ponder 13 connected to it also rise, and in this process, water is pumped from the water supply nozzle 10 onto the soil surface of the water tray 5. , After cleaning the dirt that comes into contact with the bottom surface of the ice tray 4, remove the drain tray 1.
6 and drain pipe 17 to the outside of the ice maker, the water passes through the water flow hole 12 of the water tray 5 or the water flow hole 13 provided at the open end of the water tray 5, and directly enters the water tank 8. At the same time, a part of the water passes through the water flow hole 12 and flows into the water guide container 11, and indirectly flows into the water tank B through the water flow hole 13 and is stored. At this time, water supply solenoid valve 2
If the amount of water supplied from the water supply nozzle 10 is large due to high water pressure in the water supply system such as the water supply system connected to the water supply nozzle 2, the water level in the water guide container 11 will rise, and water will also flow from its overflow surface. The water flows into the dripping water tank 8 and is stored there.

このようにして、水皿５が製氷皿４と当接する位置まで
戻ると、カム機構に連設したカムスイッチ等のスイッチ
機構が再ひ作動し、制御回路によツＴＴ可逆モータの回
転を停止させると共に、冷凍サイクル中のホットガス電
磁弁を閉じ、そして循環ポンプ１３を作動させる。ホッ
トガス電磁弁が閉じると、これまで製氷皿４に流れ込ん
でいた高温高圧のホットガスは、冷凍サイクルの凝縮器
側に流れ込み、空気又は水によって冷却液化され、高温
高圧の液体としてキャピラリチューブや膨張弁等の減圧
機構に送られ、低温低圧の液体となって製氷皿４の冷媒
配管１８に入り、ここで外部から熱を奪って蒸発気化し
、低温低圧のガスとして圧縮機に吸い込まれ、シリンタ
内で正編され再ひ高温高圧のガスとなって圧縮機から吐
出され、以後、この動作を繰り返すことによって製氷皿
４を極低福、（約−２５６Ｃ）の状態に冷却する。In this way, when the water tray 5 returns to the position where it contacts the ice tray 4, a switch mechanism such as a cam switch connected to the cam mechanism is activated again, and the control circuit stops the rotation of the TT reversible motor. At the same time, the hot gas solenoid valve in the refrigeration cycle is closed, and the circulation pump 13 is operated. When the hot gas solenoid valve closes, the high-temperature, high-pressure hot gas that has previously flowed into the ice tray 4 flows into the condenser side of the refrigeration cycle, where it is cooled and liquefied by air or water, and is then transferred to the capillary tube or expanded as a high-temperature, high-pressure liquid. It is sent to a pressure reducing mechanism such as a valve, becomes a low-temperature, low-pressure liquid, and enters the refrigerant pipe 18 of the ice tray 4, where it absorbs heat from the outside, evaporates, and is sucked into the compressor as a low-temperature, low-pressure gas. The ice tray 4 is cooled to a very low temperature (approximately -256C) by repeating this operation.

−万、循環ポンプ１４か運転をｐｌ始すると、水１１■
５の噴１利ノズル７から製氷皿４の製氷小室６のほぼ中
央部に向かって水槽Ｂ内の水が噴射され、冷却リーイク
ルに切換えられた製氷皿４に当たって冷却された後、水
皿５の上に落下し、噴射ノズル７のダ１側に位置する循
環水戻り孔９を通り水案内：合’ｔｉ　１１或いは水槽
８内に流入し、す、後は前述したように、水案内容器１
１内の水位を監視する第１液位検出器１９によって製氷
の終了が検出されるまでの間、水皿５の多数の循環水戻
り孔９の全てから戻って来る水を水案内容器１１に流入
させるように構成した場合は、水槽８−循環ポンプ１４
→水皿５の噴射ノズル７→製氷皿４の製氷小室６−水［
１１５の循環水戻り孔９−水案内容器１１のオーバーフ
ロー面及び流水孔１３→水槽８の経路で、又水皿５の多
数の循環水戻り孔９のうち予め選定した一部から戻って
来る分の水だけを水案内容器１１に流入させるようにし
、それ以外の循環水戻り孔９から戻って来る水は周知の
もので実施されているように直接水槽８内に流入させる
ように構成した場合には、上記の循環経路の他に水槽８
→循環ポンプ１４→水皿５の噴射ノズル７→製氷皿４の
製氷小室６−水皿５の循環水戻り孔９−水槽８の経路で
製氷水を繰り返し循環させる。- 10,000, when I start operation of circulation pump 14, water 11■
The water in the water tank B is injected from the nozzle 7 of No. 5 toward the approximate center of the ice-making compartment 6 of the ice-making tray 4, and after being cooled by hitting the ice-making tray 4 which has been switched to the cooling recycle, the water in the water tray 5 is The water falls upward, passes through the circulating water return hole 9 located on the side 1 of the injection nozzle 7, flows into the water guide container 11 or the water tank 8, and then returns to the water guide container 1 as described above.
Until the end of ice making is detected by the first liquid level detector 19 that monitors the water level in the water tray 5, the water returning from all of the many circulating water return holes 9 of the water tray 5 is returned to the water guiding container 11. If configured to allow inflow, water tank 8 - circulation pump 14
→ Spray nozzle 7 of water tray 5 → Ice-making chamber 6 of ice-making tray 4 - water [
115 through the circulating water return hole 9 - the overflow surface of the water guide container 11 and the water flow hole 13 -> water tank 8 route, and also from a preselected part of the large number of circulating water return holes 9 of the water tray 5. In the case of a configuration in which only the water from the circulating water is allowed to flow into the water guide container 11, and the other water returning from the circulating water return hole 9 is made to flow directly into the water tank 8 as is well known and practiced. In addition to the above circulation route, there is a water tank 8.
Ice-making water is repeatedly circulated through the following path: → circulation pump 14 → injection nozzle 7 of water tray 5 → ice-making chamber 6 of ice-making tray 4 - circulating water return hole 9 of water tray 5 - water tank 8.

捷だ、水皿５の上昇完了後も、水槽８への給水は水槽Ｂ
内の水位が所定のレベルに達するまで続けられ、水槽８
に１回の製氷に必要な所定量の水がたまると、第２液位
検出器２０が作動し、給水電磁弁２２が閉じて水槽８へ
の給水が停止される。Sorry, even after the water tray 5 has been raised, water is still supplied to the water tank 8 from the water tank B.
This continues until the water level in tank 8 reaches a predetermined level.
When a predetermined amount of water necessary for one ice-making operation is accumulated, the second liquid level detector 20 is activated, the water supply electromagnetic valve 22 is closed, and the water supply to the water tank 8 is stopped.

以上の動作において、水皿５の上昇か完了した時点で直
ちに循環ポンプ１４の運転を開始し、水皿５の噴射ノズ
ル７から製氷皿４の製氷小室６内に水を噴射しているの
で、水案内容器１１内には水皿５の循環水戻り孔９を通
って戻り水が流入するため、水案内容器１１の水位は水
槽８への給水が光子する前に所定のオーバーフロー状態
に急速に上昇し、第１液位検出器１９による製氷終了の
検出がいつでも可能な状態となる。しかしながら、予期
せぬ原因によって起こる誤検出の危険を防ぐため、第１
液位検出器１９から発せられる瑛出侶号は、第２液位検
出器２０か水槽８内の所定水位を検出し、１回の製氷に
必要な量の水か水＋ｌ１１１内に給水されたことを確認
した後に漸動となるように制御回路を構成することが望
ましい。このようにして、製氷水を繰り返し循環させる
ことにより製氷皿４の下面に設けた多数の製氷小室６の
隔壁内面から製氷小室６の中心に向かって徐々に氷を形
成させて行き、氷が所定の大きさに充分成長し、製氷小
室６内にははい一つぽいになると、水案内容器１１の水
量を監視している第１液位検出器１９によって製氷の終
了を検出し、に、１．後貯水室３内の所定のレベルまで
氷が貯ったことを検出するサーモスタットやアクチュエ
ータースイッチ等の周知のストックスイッチか作動し、
製氷装置２の電気回路に給電している電源回路が遮断さ
れるまでの間、一連の製氷、脱水動作を自動的に繰り返
し、所望の角氷をつくる。In the above operation, the operation of the circulation pump 14 is immediately started as soon as the raising of the water tray 5 is completed, and water is injected from the injection nozzle 7 of the water tray 5 into the ice making chamber 6 of the ice tray 4. Since return water flows into the water guide container 11 through the circulating water return hole 9 of the water tray 5, the water level in the water guide container 11 quickly reaches a predetermined overflow state before the water supplied to the water tank 8 is photonized. The liquid level rises, and the first liquid level detector 19 can detect the end of ice making at any time. However, in order to prevent the risk of false positives caused by unexpected causes,
The liquid level detector 19 generates a signal that detects a predetermined water level in the water tank 8 through the second liquid level detector 20, and supplies the amount of water required for one ice-making operation to the water + l111. It is desirable to configure the control circuit so that the movement starts gradually after confirming that this is the case. In this way, by repeatedly circulating the ice-making water, ice is gradually formed from the inner surface of the partition wall of the large number of ice-making chambers 6 provided on the bottom surface of the ice-making tray 4 toward the center of the ice-making chambers 6. When the ice-making chamber 6 reaches a sufficient size, the first liquid level detector 19, which monitors the amount of water in the water guide container 11, detects the end of ice-making. ．． A well-known stock switch such as a thermostat or actuator switch that detects that ice has accumulated to a predetermined level in the rear water storage chamber 3 is activated,
Until the power supply circuit feeding the electric circuit of the ice making device 2 is cut off, a series of ice making and dehydration operations are automatically repeated to make desired ice cubes.

この発明は、以上のとおり、水皿に設けた噴射ノズルか
ら製氷皿に設けた製氷小室に向かって噴出され、製氷小
室の内壁に当たって水１１１１の上に落下し、水皿に設
けた循環水戻り孔を通って水皿の下方に位置する水槽に
帰ってくる戻り水の全部又は一部が流入する水案内容器
を水皿の下部に連結して設け、この水案内容器の適当な
位置に設けた流水孔から水槽に流れ込む水の流出量を、
水皿の循環水戻り孔から水槽に流れ込む戻り水の流１辻
よりも十分小さくしておき、製氷皿の製氷小室１ノ」で
水が成長すると、水皿に設けた循環水戻り孔か出来た氷
によってふさがれ、水案内容器に流れ込む戻り水の流量
が城少し、水案内容器内の液位が所定の値以下になると
液位検出器を作動させて製氷の終了を表わす信号を発す
るようにしたもので、要約すれは水■１の循環水戻り孔
がふさがれた戻り水の量が減少したこと、即ち、製氷小
室内に現実に所望の氷が出来たことを確認し、製氷の終
了を検出しているので、水槽に供給される製氷用水の（
，５ｉｌ１１．ｌＪｌ、や冷凍サイクルの凝縮器の冷却
に使用される水や空気の昌度に影響されることはない。As described above, in this invention, the water is ejected from the injection nozzle provided in the water tray toward the ice making chamber provided in the ice making tray, hits the inner wall of the ice making chamber and falls onto the water 1111, and the circulating water provided in the water tray returns to the ice making chamber. A water guide container is provided connected to the lower part of the water tray into which all or part of the return water that returns through the hole and returns to the water tank located below the water tray flows, and the water guide container is provided at an appropriate position of the water guide container. The amount of water flowing into the tank from the water hole is
The flow of return water flowing into the water tank from the circulating water return hole of the water tray should be made sufficiently smaller than the flow of return water, and when the water grows in the ice making compartment 1 of the ice making tray, the circulating water return hole provided in the water tray should be made smaller. When the flow rate of the return water flowing into the water guide container is blocked by ice and the liquid level in the water guide container falls below a predetermined value, a liquid level detector is activated to issue a signal indicating the end of ice making. In summary, confirm that the amount of return water that blocked the circulating water return hole in water 1 has decreased, that is, that the desired ice has actually been formed in the ice-making chamber, and then check the ice-making process. Since the end is detected, the ice making water supplied to the water tank (
, 5il11. lJl, or the degree of water or air used to cool the condenser of the refrigeration cycle.

従って、この発明によれは、従来のタイマ式、→）′−
モスクット式、サーミスタ式のように、気６情や水〃１
に応じて製氷検出装置をいちいち調整する必要かないた
め煩しい操作は全く不要となり、さらには製氷検出装（
置の不適市な設定による製氷装置ハ゛の無駄な運転かな
くなり、工場出荷時に確認したのと同じ性能か設置光に
おいても発揮され、年間を通して無調整でいつも一定の
形状や大きさの角”＋をつくることができる。Therefore, according to the present invention, the conventional timer type, →)′−
Like Moskut type and thermistor type, air 6 emotion and water 1
Since there is no need to adjust the ice-making detection device each time, there is no need for any complicated operations.
This eliminates wasteful operation of the ice making equipment due to inappropriate settings, and the same performance is achieved under the installed light as confirmed at the time of shipment from the factory, and corners of the same shape and size are always produced without adjustment throughout the year. can be created.

また、この発明は、最も氷の成長の遅い噴射ノズルの真
上の氷の出来具合により変わる循環ポンプからの噴射水
の圧力変化を監視する水車カスイッチ式に比して、噴射
ノズルの真上よりはるかに成長の早い循環水戻り孔の上
部の氷の出来具合により変わる戻り水の量を監視してい
るので、製氷装置の運転状態が悪い嵩温時に、）タ低ン
晶に冷却されている製氷小室の隔壁内面から最も離れた
遠い場所に位置する噴射ノズルの真土部には容易に氷が
出来ｌＳ〈ても、製氷小室のほぼ中央部に位置する噴射
小孔の近くの外（！４１１に設けられているｉ盾環水戻
り孔は製氷小室の隔壁内面からね１２μ前が噴ｑ４ノズ
ルのそれに比して非富に短いため、循環水戻り孔の上部
には比較的容易に水が形成されるので、製氷終了の検出
が不能となることはなく、しかもポンプの能力には直接
関係ないから電源周波数や電圧変動等にも影響されるこ
とかなく、誤動作しにくいという特徴がある。In addition, this invention is more effective than the water turbine switch type, which monitors the pressure change of the water injected from the circulation pump, which changes depending on the condition of the ice directly above the injection nozzle, where ice grows the slowest. We monitor the amount of return water, which changes depending on the condition of the ice at the top of the circulating water return hole, which grows much faster than the previous one. Ice can easily form on the base of the injection nozzle, which is located farthest from the inner surface of the partition wall of the ice-making chamber. The i-shield ring water return hole provided in !411 is much shorter at 12μ from the inner surface of the partition wall of the ice-making chamber than that of the jet q4 nozzle, so it is relatively easy to access the upper part of the circulating water return hole. Since water is formed, it is not impossible to detect the end of ice making, and since it is not directly related to the pump's capacity, it is not affected by power frequency or voltage fluctuations, making it difficult to malfunction. be.

さらに、この発明は、氷が出来たことによる戻り水の減
少を、水案内容器内の水量の変化を監視することにより
検出しているから、検出時の水位の変化が極めて顕著で
あり、従って、検出が容易且つ確実に行なえるため、フ
ロートスイッチ式のように誤検出の恐れがなく、安定し
た検出動作が可能である。Furthermore, since this invention detects a decrease in return water due to the formation of ice by monitoring changes in the amount of water in the water guide container, the change in water level at the time of detection is extremely significant. Since detection can be performed easily and reliably, there is no risk of false detection unlike the float switch type, and stable detection operation is possible.

なお、以上は、この発明をその一実施例の構成に基つい
て説明したものであり、動作やシーケンスや各部の構成
等は、この一実施例に限定されるものではなく、この他
にも種々のシーケンスや機構部品を必要に応じて適用１
可能であり、例えは、一実施例ではポンプの運転を水皿
の上昇光子時に開始させているが、例えは水槽内に１回
の製氷に必要な規定量の水かたくわえたことを第２液位
検出器が検出したときに運転を始めるようにしても良い
。また、水案内容器や水槽の中の水位を検出する第１．
第２液位検出器は一実施例ではそれぞれ水案内容器や水
槽内に直接膜けであるが、これは水案内容器や水槽とは
別の小さな液位検出用の水タンクを設け、この水タンク
と水案内容器や水槽の中を小パイプを通して連絡してお
き、液位検出器をその水タンク内に設け、これによって
間接的に水案内容器や水槽内の水位を検出するようにし
ても良い。さらに、一実施例では製氷皿は多数の製氷小
室を構成する隔壁を有する下部部材と冷媒配管部をふく
らませられた１枚の板で構成された上部部材とを溶接し
て作られたアルミニウムの成形加工品より成っているが
、これは銅板で作った下部部材の上に銅パイプを半田例
けやろうイテ］けによって作ったものでも良く、この発
明の要旨を逸脱しなければ変更は任意である。The above description is based on the configuration of one embodiment of the present invention, and the operation, sequence, configuration of each part, etc. are not limited to this one embodiment, and may be modified in various ways. Apply sequences and mechanical parts as necessary 1
For example, in one embodiment, the operation of the pump is started when the photon rises in the water tray, but in the second embodiment, the operation of the pump is started when a photon rises in the water tray. The operation may be started when the liquid level detector detects the liquid level. Also, the first one detects the water level in the water guide container or aquarium.
In one embodiment, the second liquid level detector is installed directly in the water guide container or water tank, but in this case, a small water tank for liquid level detection separate from the water guide container or water tank is provided, and this It is also possible to connect the tank and the inside of the water guide container or water tank through a small pipe, and install a liquid level detector inside the water tank, thereby indirectly detecting the water level in the water guide container or water tank. good. Furthermore, in one embodiment, the ice tray is formed of aluminum and is made by welding a lower member having partition walls constituting a large number of ice-making compartments and an upper member comprising a single plate in which refrigerant pipes are swollen. Although it is made of a processed product, it may also be made by soldering a copper pipe onto a lower member made of a copper plate, and any changes may be made without departing from the gist of the invention. be.

【図面の簡単な説明】[Brief explanation of drawings]

＋２＋面はこの発明の一例を示す縦断面図である。 １・・・断熱材、　　　　２・・・製氷装置、３・・・
貯水室、　　　　　４・・・製氷皿、５・・・水皿、　
　　　　６・・・製氷室、７・・・噴射ノズル、　　８
・・水槽、９・・・循環水戻り孔、　１０・・・給水ノ
ズル１１・・・水案内容器、　　１２・・・水流入孔１
３・・流水孔、　　　　１４・・・ポンプ、１５・・・
排水口、　　　　１６・・・排水皿、１７・・・排水管
、　　　　１８・・・冷媒配管、１９．２０・・・液位
検出器、２１・・・給水パイプ、２２・・・給水電磁弁The +2+ plane is a longitudinal sectional view showing an example of the present invention. 1...Insulating material, 2...Ice making device, 3...
Water storage chamber, 4...ice tray, 5...water tray,
6...Ice making compartment, 7...Injection nozzle, 8
...Water tank, 9...Circulating water return hole, 10...Water supply nozzle 11...Water guide container, 12...Water inflow hole 1
3...Water hole, 14...Pump, 15...
Drain port, 16...Drain pan, 17...Drain pipe, 18...Refrigerant piping, 19.20...Liquid level detector, 21...Water supply pipe, 22...Water supply solenoid valve

Claims (1)

【特許請求の範囲】[Claims] 水槽に貯えた水を製氷皿に噴射するための噴射ノズルと
、噴射された水を水槽に戻Ｔための水戻り孔を備えた水
皿の下方に、水戻り孔からの水を流入する水案内容器を
設け、この水案内容器内に流入する水の量を監視し、そ
の水量か所定の値になることにより製氷の終了を検出す
るようにした製氷装置の製氷検出方法。The water from the water return hole flows into the bottom of the water tray, which is equipped with an injection nozzle for injecting the water stored in the aquarium into the ice cube tray, and a water return hole for returning the injected water to the aquarium. A method for detecting ice making in an ice making apparatus, in which a guide container is provided, the amount of water flowing into the water guide container is monitored, and the end of ice making is detected when the amount of water reaches a predetermined value.