JPH01210776A - Icing starting detecting device for vaporizer for ice-making - Google Patents
Icing starting detecting device for vaporizer for ice-makingInfo
- Publication number
- JPH01210776A JPH01210776A JP3562388A JP3562388A JPH01210776A JP H01210776 A JPH01210776 A JP H01210776A JP 3562388 A JP3562388 A JP 3562388A JP 3562388 A JP3562388 A JP 3562388A JP H01210776 A JPH01210776 A JP H01210776A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- ice
- making
- detector
- detected
- 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.)
- Pending
Links
- 239000006200 vaporizer Substances 0.000 title abstract 3
- 239000003507 refrigerant Substances 0.000 claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims description 16
- 230000008020 evaporation Effects 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000008016 vaporization Effects 0.000 abstract 3
- 238000011835 investigation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 20
- 238000005338 heat storage Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、シャーベット状の氷を生成する製氷用蒸発器
における発氷の有無を検出する発氷検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an ice generation detection device that detects the presence or absence of ice generation in an ice making evaporator that produces sherbet-like ice.
（従来の技術）
従来、この種の製氷用蒸発器は、例えば特開昭５Ｅ３−
２５６７号公報に開示され、又、第５図に示すように、
製氷用溶液を供給する内管（Ａ）内に、外周部に羽根（
Ｆ）を備えた回転ドラム（Ｄ）を内装すると共に、内管
（Ａ）と外管（Ｂ）との間に、圧縮機を用いて構成され
る冷凍装置における蒸発用熱交換ｆｉ （Ｅ）をコイル
状にして内装し、深夜電力等を利用して運転を行い、蒸
発用熱交換器（Ｅ）による冷却作用と、羽根（Ｆ）によ
る氷の剥ぎ取り作用とにより、前記溶液からシャーベッ
ト状の氷を生成して、下方に配設する蓄熱槽（Ｃ）に、
室内ユニット（［７）・・・・へ昼間供給する冷房用冷
熱源として予め蓄えるようにしている。(Prior Art) Conventionally, this type of ice-making evaporator has been disclosed, for example, in Japanese Patent Application Laid-open No. 5E3-
As disclosed in Japanese Patent No. 2567, and as shown in FIG.
Inside the inner tube (A) that supplies the ice-making solution, there are blades (
Heat exchange fi (E) for evaporation in a refrigeration system configured with a rotating drum (D) equipped with F) and a compressor between an inner tube (A) and an outer tube (B). The solution is made into a coil and is operated using late-night electricity, etc., and the cooling effect of the evaporative heat exchanger (E) and the ice stripping effect of the blades (F) transform the solution into a sherbet-like form. of ice is generated in the heat storage tank (C) located below.
It is stored in advance as a cold heat source for air conditioning to be supplied to the indoor units ([7)...] during the day.
又、シャーベット状の氷とされる製氷用溶液としては、
水の氷点（０℃）以下で凍結するように、水にエチレン
グリコール等を添加した水溶液が一般に用いられている
。In addition, as an ice-making solution that is made into sherbet-like ice,
An aqueous solution prepared by adding ethylene glycol or the like to water is generally used so that it freezes below the freezing point of water (0° C.).
尚−１第５図中、（Ｐ）は蓄熱槽（Ｃ）の液域から内管
（Ａ）の上方に溶液を汲上げる循環ポンプである。In addition, (P) in FIG. 5 is a circulation pump that pumps up the solution from the liquid area of the heat storage tank (C) above the inner pipe (A).
（発明が解決しようとする課題）
七ころで以上のごとき装置においては、氷の生成量を適
性調節するために、製氷運転開始頭切に主として溶液温
度を低下させるために行われる所謂プルダウン運転ステ
ージと、氷が出来始めてからの実質的な製氷運転ステー
ジとを峻別し、実質的な製氷時間を規制したり、又、各
運転ステージで圧縮機の能力を変えたり、更には、製氷
運転ステージにおいて回転ドラム（Ｄ）の凍結防止を図
るため、圧縮機の運転を一時的に休止したりしたい場合
がある。(Problems to be Solved by the Invention) In the above-mentioned apparatus, a so-called pull-down operation stage is carried out at the beginning of the ice-making operation mainly to lower the solution temperature in order to appropriately adjust the amount of ice produced. It is possible to clearly distinguish between the actual ice-making operation stage and the actual ice-making operation stage after ice begins to be made, and to regulate the actual ice-making time, change the capacity of the compressor at each operation stage, and furthermore, In order to prevent the rotating drum (D) from freezing, there are cases where it is desired to temporarily stop the operation of the compressor.
この場合、運転開始から一定時間はプルダウン時間であ
ると一律的にみなすことも可能であるが、こうした場合
、室内ユニット（Ｕ）の運転台数や室内熱負荷等の可変
的な要素により昼間に消費される氷の量が異なって残存
水量も異なるものであるし、又、製氷運転が行われる時
の気温にも差異があり、運転条件が一意に定まらないか
ら、−律的な時間管理のみでは適性な生成水量を調節す
ることが困難である。In this case, it is possible to uniformly consider a certain period of time from the start of operation to be the pull-down time, but in such a case, the consumption during the day may vary depending on variable factors such as the number of indoor units (U) in operation and the indoor heat load. The amount of ice produced differs, so does the amount of remaining water. Furthermore, there are also differences in the temperature at the time of ice-making operation, and the operating conditions cannot be determined uniquely. It is difficult to adjust the appropriate amount of generated water.
そこで、実際に氷が何時出来始めるかを知りたい要求が
生じるのであり、本発明は、真にその要求に応えるべく
、発氷を検出するための装置について発明したものであ
り、その目的とするところは、検出構造が単純で、しか
も、正確に発氷を知ることのできる製氷用蒸発器におけ
る発氷検出装置を提供する点にある。Therefore, there is a demand for knowing when ice actually starts to form, and in order to truly meet that demand, the present invention has been invented regarding a device for detecting ice formation. The object of the present invention is to provide an ice formation detection device for an ice-making evaporator that has a simple detection structure and can accurately detect ice formation.
（課題を解決するための手段）
本発明は、図面の実施例に示したごとく、回転ドラム（
５）を内装し、製氷用溶液を流通させる内管（２）と、
前記溶液を冷却する冷媒を流通させる外管（３）とをも
った製氷用蒸発器（１）における前記溶液の発氷を検出
する発氷検出装置であって、前記外管（３）に流通され
る前記冷媒の蒸発圧力を検出する圧力検出器（ＰＳ）と
、−定時間毎に前記圧力検出器（ＰＳ）による圧力検出
を行うサンプリング手段と、該サンプリング手段により
一定時間毎に検出される検出圧力の変化を調べる判別手
段とを備えていることを特徴とするものである。(Means for Solving the Problems) As shown in the embodiments of the drawings, the present invention provides a rotating drum (
5), and an inner tube (2) through which the ice-making solution flows;
An ice generation detection device for detecting ice formation in the solution in an ice-making evaporator (1) having an outer tube (3) through which a refrigerant for cooling the solution flows, the ice generation detection device comprising: an outer tube (3) through which a refrigerant for cooling the solution flows; - a pressure detector (PS) for detecting the evaporation pressure of the refrigerant; - a sampling means for detecting the pressure by the pressure detector (PS) at regular time intervals; The present invention is characterized in that it includes a determination means for checking changes in detected pressure.
（作用）
しかして前記製氷用蒸発器（１）でシャーベット状の氷
を製造する場合には、前記外管（３）を流通−する冷媒
の蒸発圧力が、前記サンプリング手段を介して一定時間
毎に、前記圧力検出器（ＰＳ）で検出され、また該検出
器（ＰＳ）で検出された検出圧力の変化が前記判別手段
で判別される。前記溶液が凍り始めると、該溶液と、前
記外管（３）に流通する冷媒との熱交換は潜熱のやりと
りのみとなるため、冷媒の圧力変化はな（なり、はぼ一
定の圧力に保持される。従って、前記判別手段により、
サンプリング手、段で一定時間毎に検出される冷媒の蒸
発圧力の変化を調べることにより、前記蒸発器（１）内
での発氷が正確に検出されるのである。(Function) When sherbet-like ice is produced using the ice-making evaporator (1), the evaporation pressure of the refrigerant flowing through the outer tube (3) is adjusted at regular intervals through the sampling means. Then, the pressure sensor (PS) detects the pressure, and the discrimination means discriminates a change in the detected pressure detected by the pressure detector (PS). When the solution begins to freeze, the only heat exchange between the solution and the refrigerant flowing through the outer tube (3) is the exchange of latent heat, so there is no change in the pressure of the refrigerant (the pressure remains almost constant). Therefore, by the discrimination means,
Ice formation within the evaporator (1) can be accurately detected by examining changes in the evaporation pressure of the refrigerant detected at regular intervals by the sampling means and stage.
（実施例）
第２図及び第３図に示すものは、製氷用蒸発器（１）で
あって、軸方向一端に製氷用溶液の流入口（２１）を、
他端に前記溶液の流出口（２２）を設けた内管（２）と
、冷媒の取入口（３１）と取出口（３２）とを設けた外
管（３）とを備え、前記内管（２）に、該内管（２）の
内周面（２０）に摺接するブレード（４）を備えた回転
ドラム（５）を内装し、前記内周面（２ｏ）を伝熱面と
して前記冷媒により溶液を冷却するようにしている。(Example) The ice-making evaporator (1) shown in FIGS. 2 and 3 has an ice-making solution inlet (21) at one end in the axial direction.
An inner tube (2) having an outlet (22) for the solution at the other end, and an outer tube (3) having an inlet (31) and an outlet (32) for the refrigerant, the inner tube (2) is equipped with a rotating drum (5) equipped with a blade (4) that comes into sliding contact with the inner circumferential surface (20) of the inner tube (2), and the inner circumferential surface (2o) is used as a heat transfer surface. The solution is cooled by a refrigerant.
前記ブレード（４）は、回転ドラム（５）の軸方向長さ
に沿って４分割して４対（４ａ、４ａ）（４ｂ、４ｂ）
（４ｃ、４ｃ）（４’ｄ、４ｄ）配設され、各一対は互
いに回転ドラム（５）の円周上１８０°隔てて対向状に
設けられ、又、各対は該回転ドラム（５）の軸方向長さ
に沿って互いに４５°Ｃづづ偏位させて設けている。The blades (4) are divided into four pairs along the axial length of the rotating drum (5) and divided into four pairs (4a, 4a) (4b, 4b).
(4c, 4c) (4'd, 4d), each pair is provided facing each other at 180 degrees apart on the circumference of the rotating drum (5), and each pair is opposite to each other on the circumference of the rotating drum (5). are offset from each other by 45°C along their axial lengths.
以上構成する蒸発器（１）は、第１図に示すように、２
台を一対にして、各回転ドラム（５）（５）の駆動軸（
５０）（５０）を１台のモータ（Ｍ２）で駆動している
。又、各内管（２）（２）は連絡管（６３）で直列に接
続され、初段側の流入口（２１）と後段側の流出口（２
２）とに、溶液の供給管（６１）及び戻し管（６２）を
結合して蓄熱槽（６）を接続し、供給管（６１）に介装
する循環ポンプ（７）を介して蓄熱槽（６）と各内管（
２）（２）との間で溶液を循環させるようにしている。As shown in FIG. 1, the evaporator (1) configured above has two
The drive shafts (
50) (50) is driven by one motor (M2). In addition, the inner pipes (2) (2) are connected in series by a connecting pipe (63), with an inlet (21) on the first stage side and an outlet (21) on the latter stage.
2), a solution supply pipe (61) and a return pipe (62) are connected to the heat storage tank (6), and the heat storage tank is connected to the heat storage tank (6) through a circulation pump (7) installed in the supply pipe (61). (6) and each inner tube (
2) The solution is circulated between (2) and (2).
一方、各外管（３）（３）は互いに並列に接続されて、
圧縮機（８）を備える冷凍装置（１０）に連結されてい
る。On the other hand, each outer tube (3) (3) is connected in parallel to each other,
It is connected to a refrigeration system (10) that includes a compressor (8).
冷凍装置（１０）は、圧縮機（８）の吐出側から、油分
離器（１１） 、水冷式凝縮器（１２）を介装すると共
に、分流器（１３）を介して２系統の分岐路（１４）（
１４）を並列に設け、該名分岐路に、凝縮した高圧液冷
媒を膨張させるエジェクター（１５）と、膨張後の低圧
液冷媒の蒸発作用を行わせる前記外管（３）とを介装し
て、その出口をヘッダ（１６）で統合し、更にアキュム
レータ（１７）を介して圧縮機（８）の吸入側に接続し
て成るものである。The refrigeration system (10) is equipped with an oil separator (11) and a water-cooled condenser (12) from the discharge side of the compressor (8), and is connected to two branch lines via a flow divider (13). (14)(
14) are provided in parallel, and an ejector (15) for expanding the condensed high-pressure liquid refrigerant and the outer tube (3) for evaporating the expanded low-pressure liquid refrigerant are interposed in the branch path. The outlet is integrated with a header (16) and further connected to the suction side of the compressor (8) via an accumulator (17).
尚、第１図中、（１８）は、凝縮器（１２）の出口管（
１２０）と圧縮機（８）の吸入管（８０）とを熱交換可
能に付設して成る吸入熱交換器、（１９）（１９）は各
エジェクター（１５）（１５）の均圧管、又、（ＳＶ）
は閉鎖弁、（ＢＶ）は逆止弁、（ＲＩ）はリキッドアイ
、（ＤＦ）はドライヤフィルタ、（ＨＰＳ）は高圧圧力
検出器、（ＨＧ）は同高圧圧力ゲージ、（ＬＰＳ）は低
圧圧力検出器、（ＬＧ）は同低圧圧力ゲージである。又
、（Ｍｌ）はポンプモータ、（Ｍ３）は圧縮機モータで
ある。In Fig. 1, (18) is the outlet pipe (12) of the condenser (12).
120) and the suction pipe (80) of the compressor (8) are attached to enable heat exchange, (19) (19) is the pressure equalization pipe of each ejector (15) (15), (SV)
is a closing valve, (BV) is a check valve, (RI) is a liquid eye, (DF) is a dryer filter, (HPS) is a high-pressure pressure detector, (HG) is a high-pressure pressure gauge, (LPS) is a low-pressure pressure The detector (LG) is the same low-pressure pressure gauge. Further, (Ml) is a pump motor, and (M3) is a compressor motor.
そして、前記製氷用蒸発器（１）での発氷を検出する装
置として、該蒸発器（１）の外管（３）を流通する冷媒
の蒸発圧力を検出する圧力検出器（ＰＳ）と、一定時間
毎に前記圧力検出器（ＰＳ）による圧力検出を行うサン
プリング手段（６０）と、該サンプリング手段（６０）
により一定時間毎に検出される検出圧力の変化を調べる
判別手段（７０）とを設け、前記外管（３）を流通する
冷媒の蒸発圧力を、前記サンプリング手段（６０）を介
して一定時間毎に、前記圧力検出器（ＰＳ）で検出し、
該検出器（ＰＳ）で検出した検出圧力の変化を前記判別
手段（７０）で判別して、この判別結果により前記蒸発
器（１）で発氷が行われたか否かを検出するのである。and a pressure detector (PS) for detecting the evaporation pressure of the refrigerant flowing through the outer tube (3) of the evaporator (1) as a device for detecting ice formation in the ice-making evaporator (1); a sampling means (60) for detecting pressure by the pressure detector (PS) at regular intervals; and the sampling means (60).
determination means (70) for checking changes in the detected pressure detected at regular intervals by the sampling means (60); Detected by the pressure detector (PS),
The change in the detected pressure detected by the detector (PS) is discriminated by the discrimination means (70), and based on the discrimination result, it is detected whether or not ice has been generated in the evaporator (1).
具体的には、第１図で明らかにしたごとく、各外管（３
）（３）の出口を統合する前記ヘッダ（１６）とアキュ
ムレータ（１７）とを結ぶ低圧ガス管に、前記圧力検出
器（ＰＳ）を接続して、この検出器（ＰＳ）で前記各外
管（３）（３）に供給された後の冷媒の蒸発圧力を検出
するごとくなすと共に、前記検出器（ＰＳ）に、前記サ
ンプリング手段（６０）と判別手段（７０）及びタイマ
ークロック（ＴＣ）を備えたコントローラ（９）を接続
するのである。尚、蒸発圧力検出には、前記低圧圧力検
出器（ＬＰＳ）を利用しても行えるが、前記したように
外管（３）の出口近くに配した検出器（ＰＳ）で検出す
るのがより好ましく正確な値を知ることができる。Specifically, as shown in Figure 1, each outer tube (3
) The pressure detector (PS) is connected to the low pressure gas pipe connecting the header (16) and the accumulator (17) that integrate the outlets of (3), and this detector (PS) (3) In addition to detecting the evaporation pressure of the refrigerant after being supplied to (3), the detector (PS) is equipped with the sampling means (60), the discrimination means (70), and a timer clock (TC). The equipped controller (9) is connected. Although the evaporation pressure can be detected by using the low pressure detector (LPS), it is better to use the detector (PS) placed near the outlet of the outer tube (3) as described above. A desirable and accurate value can be known.
そして、前記コントローラ（９）に備えたクロック（Ｔ
Ｃ）で、前記サンプリング手段（６０）によるサンプリ
ング時間を設定すると共に、前記クロック（ＴＣ）で設
定した一定時間毎に前記圧力検出器（ＰＳ）により、前
記各外管（３）から流出される前記冷媒の蒸発圧力を検
出するごとくなす一方、前記検出器（ＰＳ）で検出され
る圧力変化を前記判別手段（７０）で判別し、該判別手
段（７０）の判別結果により、前記各蒸発器（１）内で
の発氷状態を検出するのである。A clock (T) provided in the controller (9)
In C), the sampling time by the sampling means (60) is set, and the pressure sensor (PS) flows out from each outer tube (3) at fixed time intervals set by the clock (TC). While the evaporation pressure of the refrigerant is detected, the pressure change detected by the detector (PS) is discriminated by the discrimination means (70), and based on the discrimination result of the discrimination means (70), each of the evaporators (1) Detects the state of ice formation within the interior.
第４図は、縦軸に前記冷媒の蒸発圧力（ＥＰＰ）と溶液
の入口温度（Ｘ）及び出口温度（Ｙ）を、また横軸に時
間をとったものであり、前記製水装置の運転開始頭初に
は、前記製氷用蒸発器（１）における溶液の出入口温度
（Ｙ）（Ｘ）も冷媒の蒸発圧力（ＥＰＰ）も共に高いの
であるが、前記冷凍装置の運転に伴ってこれらが経時的
に徐々に低下し、運転開始から一定時間を経過した後に
は、前記蒸発器（１）でシャーベット状の氷が発生して
、出口温度（Ｙ）が一定となると共に、この発氷後には
冷媒の圧力変化が起こらず、該冷媒は一定の低圧力状態
となるのである。FIG. 4 shows the evaporation pressure (EPP) of the refrigerant, the inlet temperature (X) and the outlet temperature (Y) of the solution on the vertical axis, and time on the horizontal axis, and shows the operation of the water production apparatus. At the beginning, both the inlet and outlet temperatures (Y) (X) of the solution and the evaporation pressure (EPP) of the refrigerant in the ice-making evaporator (1) are high, but as the refrigeration equipment operates, these increase. It gradually decreases over time, and after a certain period of time has elapsed from the start of operation, sherbet-like ice is generated in the evaporator (1), the outlet temperature (Y) becomes constant, and after this ice generation, In this case, the pressure of the refrigerant does not change, and the refrigerant remains at a constant low pressure.
しかして前記製氷用蒸発器（１）の外管（３）出口側に
おける冷媒の蒸発圧力を前記検出１（ＰＳ）により、前
記サンプリング手段（６０）で設定した一定のサンプリ
ング時間（Δｔ）、例えば５分間にわたって検出し、こ
の検出圧力（ＥＰＰ）が前記サンプリング時間範囲内で
変化することなく、一定の低圧力状態にあるとき、例え
ば第４図のゾーン（Ｖ）にあるときには、前記判別手段
（７０）で前記蒸発器（１）内でシャーベット状の氷が
発生したと判別するのである。Accordingly, the evaporation pressure of the refrigerant at the outlet side of the outer tube (3) of the ice-making evaporator (1) is determined by the detection 1 (PS) for a certain sampling time (Δt) set by the sampling means (60), for example. When the detection pressure (EPP) is detected for 5 minutes and is in a constant low pressure state without changing within the sampling time range, for example in zone (V) in FIG. 4, the discrimination means ( In step 70), it is determined that sherbet-like ice is generated in the evaporator (1).
又、前記検出器ＣＰＳ）による検出圧力（ＥＰＰ）が、
前記サンプリング手段（６０）で設定したサンプリング
時間（Δｔ）の範囲内において変化する場合、例えば同
図のゾーン（Ｗ）にあるときには、前記判別手段（７０
）で発氷状態にないと判別するのである。Moreover, the detected pressure (EPP) by the detector CPS) is
When the sampling time (Δt) changes within the range of the sampling time (Δt) set by the sampling means (60), for example in the zone (W) in the figure, the discrimination means (70)
) to determine that there is no ice formation.
（発明の効果）
以上説明したごとく本発明にかかる製氷用蒸発器におけ
る発氷検出装置では、前記製氷用蒸発器（１）の外管（
３）に流通される冷媒の蒸発圧力を検出する圧力検出器
（ＰＳ）と、一定時間毎に前記圧力検出器（ＰＳ）によ
る圧力検出を行うサンプリング手段（６０）と、このサ
ンプリング手段（６０）により一定時間毎に検出される
検出圧力の変化を調べる判別手段（７’Ｏ）とを備える
ようにしたから、一定時間毎に検出される蒸発圧力の変
化を調べるだけの簡単な構成で、前記製氷用蒸発器（１
）での正確な発氷検出が行え、運転開始頭初のプルダウ
ンステージと氷が出来始めてからの実質的な製氷運転ス
テージとが峻別でき、圧縮機の発停制御等各種の運転制
御の便に供することができるのである。(Effects of the Invention) As explained above, in the ice generation detection device for the ice-making evaporator according to the present invention, the outer tube (
3) a pressure detector (PS) that detects the evaporation pressure of the refrigerant flowing through the refrigerant, a sampling means (60) that performs pressure detection by the pressure detector (PS) at fixed time intervals, and this sampling means (60) Since it is equipped with a discriminating means (7'O) for checking changes in the detected pressure detected at regular intervals, the above-mentioned method can be easily configured by simply checking changes in the evaporation pressure detected at regular intervals. Evaporator for ice making (1
), it is possible to accurately detect ice formation, and the first pull-down stage at the beginning of operation can be clearly distinguished from the actual ice-making operation stage after ice begins to form, making it convenient for various operation controls such as compressor start/stop control. It is possible to provide.
第１図は本発明光氷検出装置をもつ製氷用蒸発器を備え
た製氷装置の配管系統□図、第２図は同製氷用蒸発器の
一部切欠側断面図、第３図はその縦断面図、第４図は同
製氷用蒸発器における溶液の出入口温度及び冷媒の蒸発
圧力の変化を示す図、第５図は従来例の配管系統図であ
る。
（１）・・・・・・・・製氷用蒸発器
（２）・・・・・・・・内管
（３）・・・・・・・・外管
（５）・・・・・・・・回転ドラム
（ＰＳ）・・・・・・圧力検出器
（６０）・・・・・・サンプリング手段（７０）・・・
・・・判別手段Figure 1 is a diagram of the piping system of an ice-making device equipped with an ice-making evaporator equipped with the optical ice detection device of the present invention, Figure 2 is a partially cutaway side sectional view of the same ice-making evaporator, and Figure 3 is its longitudinal section. A plan view, FIG. 4 is a diagram showing changes in solution inlet/outlet temperature and refrigerant evaporation pressure in the same ice-making evaporator, and FIG. 5 is a piping system diagram of a conventional example. (1)・・・・・・Evaporator for ice making (2)・・・・・・Inner tube (3)・・・・・・Outer tube (5)・・・・・・... Rotating drum (PS) ... Pressure detector (60) ... Sampling means (70) ...
...Discrimination means
Claims (1)
る内管（２）と、前記溶液を冷却する冷媒を流通させる
外管（３）とをもった製氷用蒸発器（１）における前記
溶液の発氷を検出する発氷検出装置であって、前記外管
（３）に流通される前記冷媒の蒸発圧力を検出する圧力
検出器（ＰＳ）と、一定時間毎に前記圧力検出器（ＰＳ
）による圧力検出を行うサンプリング手段と、該サンプ
リング手段により一定時間毎に検出される検出圧力の変
化を調べる判別手段とを備えていることを特徴とする製
氷用蒸発器における発氷検出装置。1) In an ice-making evaporator (1) equipped with a rotating drum (5) and having an inner pipe (2) through which an ice-making solution flows, and an outer pipe (3) through which a refrigerant for cooling the solution flows. An ice formation detection device for detecting ice formation in the solution, comprising: a pressure detector (PS) for detecting the evaporation pressure of the refrigerant flowing through the outer tube (3); (P.S.
1. An ice generation detection device for an ice-making evaporator, comprising: sampling means for detecting pressure by the sampling means; and discrimination means for examining changes in the detected pressure detected by the sampling means at regular time intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3562388A JPH01210776A (en) | 1988-02-18 | 1988-02-18 | Icing starting detecting device for vaporizer for ice-making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3562388A JPH01210776A (en) | 1988-02-18 | 1988-02-18 | Icing starting detecting device for vaporizer for ice-making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01210776A true JPH01210776A (en) | 1989-08-24 |
Family
ID=12446990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3562388A Pending JPH01210776A (en) | 1988-02-18 | 1988-02-18 | Icing starting detecting device for vaporizer for ice-making |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01210776A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54142644A (en) * | 1978-04-28 | 1979-11-07 | Toshiba Corp | Solidification-disposing device |
| JPS582567A (en) * | 1981-06-30 | 1983-01-08 | 朋和技研工業株式会社 | Refrigerating and cooling method |
| JPS5835771B2 (en) * | 1975-04-25 | 1983-08-04 | 旭化成株式会社 | Gishiseikeisouchi |
-
1988
- 1988-02-18 JP JP3562388A patent/JPH01210776A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835771B2 (en) * | 1975-04-25 | 1983-08-04 | 旭化成株式会社 | Gishiseikeisouchi |
| JPS54142644A (en) * | 1978-04-28 | 1979-11-07 | Toshiba Corp | Solidification-disposing device |
| JPS582567A (en) * | 1981-06-30 | 1983-01-08 | 朋和技研工業株式会社 | Refrigerating and cooling method |
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