JP2585687B2 - Ice making evaporator - Google Patents

Ice making evaporator

Info

Publication number
JP2585687B2
JP2585687B2 JP63035629A JP3562988A JP2585687B2 JP 2585687 B2 JP2585687 B2 JP 2585687B2 JP 63035629 A JP63035629 A JP 63035629A JP 3562988 A JP3562988 A JP 3562988A JP 2585687 B2 JP2585687 B2 JP 2585687B2
Authority
JP
Japan
Prior art keywords
ice making
blade
peripheral surface
inner peripheral
solution
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 - Fee Related
Application number
JP63035629A
Other languages
Japanese (ja)
Other versions
JPH01210784A (en
Inventor
良則 井上
斉和 三宅
明 倉多
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Takenaka Komuten Co Ltd
Original Assignee
Takenaka Komuten Co Ltd
Daikin Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takenaka Komuten Co Ltd, Daikin Kogyo Co Ltd filed Critical Takenaka Komuten Co Ltd
Priority to JP63035629A priority Critical patent/JP2585687B2/en
Publication of JPH01210784A publication Critical patent/JPH01210784A/en
Application granted granted Critical
Publication of JP2585687B2 publication Critical patent/JP2585687B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、製氷用溶液からシャーベット状の氷を生成
して、例えば冷房等の冷熱源として利用できるようにし
た製氷用蒸発器に関する。
Description: TECHNICAL FIELD The present invention relates to an evaporator for ice making that generates sherbet-like ice from an ice making solution so that it can be used as a cold heat source for cooling or the like.

(従来の技術) 従来、この種の製氷用蒸発器は、例えば特開昭56−25
67号公報に開示され、又、第8図に示すように、製氷用
溶液を供給する内管(A)内に、外周部ブレード(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器(E)をコイル状に
して内装し、蒸発用熱交換器(E)からの冷却作用と、
ブレード(F)による氷の剥ぎ取り作用とにより、前記
溶液をシャーベット状の氷と成し、下方に配設する蓄熱
槽(C)に、室内ユニット(U)・・・・へ供給する冷
房用冷熱源として蓄えるようにしている。
(Prior Art) Conventionally, this kind of ice making evaporator is disclosed in, for example, JP-A-56-25.
No. 67, and as shown in FIG. 8, an outer peripheral blade (F) is provided in an inner pipe (A) for supplying an ice making solution.
And a rotary drum (D) equipped with a compressor, and an evaporator heat exchanger (E) in a refrigerating apparatus constituted by using a compressor is coiled between the inner pipe (A) and the outer pipe (B). And the cooling action from the evaporating heat exchanger (E),
Due to the action of peeling off the ice by the blade (F), the solution is turned into sherbet-like ice, and is supplied to the heat storage tank (C) disposed below to the indoor unit (U). They are stored as a cold heat source.

尚、第8図中、(P)は蓄熱槽(C)の液域から内管
(A)の上方に溶液を吸上げる循環ポンプである。
In FIG. 8, (P) is a circulating pump for sucking the solution from the liquid region of the heat storage tank (C) to above the inner pipe (A).

(発明が解決しようとする課題) 所で、内管(A)を流通する製氷用溶液は、その内周
面を伝熱面として冷媒により冷却されて氷の結晶を生成
するに至るのであるが、この場合、内管(A)の内周面
に付着する氷をブレード(F)で確実に剥ぎ取るように
しないと、該内周面に付着した氷が成長し、溶液の流通
が阻害されて氷の生成が行いがたくなると共に、回転ド
ラム(D)の回転も阻害され、場合によっては、該回転
ドラムの凍結ロックが起こるのであった。
(Problems to be Solved by the Invention) Incidentally, the ice making solution flowing through the inner tube (A) is cooled by the refrigerant with the inner peripheral surface thereof as a heat transfer surface, thereby producing ice crystals. In this case, if the ice adhering to the inner peripheral surface of the inner tube (A) is not surely peeled off by the blade (F), the ice adhering to the inner peripheral surface grows and the flow of the solution is hindered. As a result, it is difficult to generate ice, and the rotation of the rotating drum (D) is also hindered. In some cases, the freezing lock of the rotating drum occurs.

これに対し、ブレード(F)により内周面に付着する
氷を確実に剥ぎ取るようにするために、例えばブレード
(F)の先端と内周面との間の隙間が極めて小さくなる
ように、該ブレード(F)を回転ドラム(D)に取付け
ることが考えられる。しかし、運転開始当初は、内管
(A)内に供給される溶液温度も、蒸発用熱交換器
(E)に供給される冷媒温度も未だ十分に低温状態に達
しておらず、氷の生成は運転開始から時間遅れで起こる
ものであるから、氷を剥ぎ取る必要のない時でもブレー
ド(F)の内周面への接触摩擦力によって該内周面の摩
耗が大きくなったり、又、回転ドラム(D)の回転負荷
が不必要に大きくなり、運転全般からみた場合得策だと
はいいがたい。
On the other hand, in order to reliably remove the ice adhered to the inner peripheral surface by the blade (F), for example, the gap between the tip of the blade (F) and the inner peripheral surface is extremely small. It is conceivable to attach the blade (F) to the rotating drum (D). However, at the beginning of the operation, the temperature of the solution supplied into the inner pipe (A) and the temperature of the refrigerant supplied to the evaporating heat exchanger (E) have not yet reached a sufficiently low temperature, and ice formation has occurred. Is caused with a time delay from the start of operation, and even when it is not necessary to remove the ice, the friction of the inner peripheral surface of the blade (F) increases due to the contact frictional force on the inner peripheral surface, and the rotation of the blade (F) increases. The rotational load of the drum (D) becomes unnecessarily large, and it is difficult to say that it is a good idea from the viewpoint of overall operation.

本発明では、氷の生成のない非製氷時と氷が生成され
る製氷時との2つの運転ステージがある点、及び、回転
ドラムの回転に伴いブレードには溶液からの反力が作用
する点に着目し、非製氷時と製氷時とに、ブレードの内
管内周面に対する接触摩擦力を変えることができる構造
にし、全体としてブレード及び内管の耐久性を向上でき
るようにすると共に、非製氷時には回転ドラムの回転負
荷を低減でき、又、製氷時には確実な氷の剥ぎ取りが行
える製氷用蒸発器を提供することを目的とする。
According to the present invention, there are two operation stages, i.e., when no ice is produced and when ice is produced, and when a reaction force from the solution acts on the blade as the rotating drum rotates. In order to improve the durability of the blade and the inner tube as a whole, the structure is such that the contact frictional force of the blade against the inner peripheral surface of the inner tube can be changed between non-ice making and ice making. It is an object of the present invention to provide an ice making evaporator that can reduce the rotational load of a rotating drum at times and can surely peel off ice during ice making.

(課題を解決するための手段) そこで、本発明では、製氷用溶液を流通させる内管
(2)と、冷媒を流通させる外管(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(20)を伝熱面として前記溶液と冷媒との熱交
換を行わせ、前記外管(3)に供給する冷媒の温度によ
り前記溶液の製氷運転と非製氷運転とを可能にした製氷
用蒸発器であって、前記ブレード(4)を前記回転ドラ
ム(5)に、該ブレード(4)の基端部(41)と先端部
(42)とを結ぶ直線が、前記回転ドラム(5)の径方向
に対し傾斜状に延びて、前記先端部(42)が前記内周面
(20)に接触するごとく支持すると共に、製氷運転時、
前記回転ドラム(5)を、前記ブレード(4)の先端部
(42)が基端部(41)に対し回転方向前方側に位置され
るように正転させ、又、非製氷運転時、前記回転ドラム
(5)を、前記ブレード(4)の先端部(42)が基端部
(41)に対し回転方向後方側に位置されるように逆転さ
せる回転制御手段(9)を設けたことを特徴とするもの
である。
(Means for Solving the Problems) Therefore, in the present invention, an inner tube (2) for flowing a solution for ice making and an outer tube (3) for flowing a refrigerant are provided. A rotary drum (5) having a blade (4) slidingly contacting the inner peripheral surface (20) of the inner pipe (2) is provided therein, and the heat of the solution and the refrigerant is used as the inner peripheral surface (20) as a heat transfer surface. An evaporator for ice making, in which the ice making operation and the non-ice making operation of the solution are enabled by the temperature of the refrigerant supplied to the outer tube (3), wherein the blade (4) is connected to the rotating drum ( In 5), a straight line connecting the base end (41) and the tip (42) of the blade (4) extends obliquely with respect to the radial direction of the rotary drum (5), and ) Supports the inner peripheral surface (20) so as to come into contact with the inner peripheral surface (20).
The rotary drum (5) is rotated forward so that the tip (42) of the blade (4) is positioned forward in the rotation direction with respect to the base (41). A rotation control means (9) for reversely rotating the rotary drum (5) such that the tip end (42) of the blade (4) is positioned rearward in the rotation direction with respect to the base end (41) is provided. It is a feature.

(作用) 非製氷運転時、ブレード(4)の先端部(42)が基端
部(41)に対し回転方向後方側に位置されるように逆転
される。この時、ブレード(4)には内管(2)内の溶
液の反力が作用するが、この反力は、該ブレード(4)
を伝熱面(20)から離間させる方向に働くことになる。
このため、ブレード(4)の先端部(42)と内周面(2
0)との間の接触力が低減され、先端部(42)と内周面
(20)との間の摺動摩耗が低減できる。又、回転ドラム
(5)の回転負荷も低減できる。尚、内管(2)内の溶
液は、ブレード(4)が回転することにより撹拌され、
その熱交換は促進される。
(Operation) During the non-ice making operation, the blade (4) is reversed so that the distal end (42) is positioned rearward in the rotation direction with respect to the proximal end (41). At this time, the reaction force of the solution in the inner tube (2) acts on the blade (4), and this reaction force is applied to the blade (4).
In the direction of separating the heat transfer surface from the heat transfer surface (20).
For this reason, the tip (42) of the blade (4) and the inner peripheral surface (2)
0), and the sliding wear between the tip (42) and the inner peripheral surface (20) can be reduced. Further, the rotational load of the rotating drum (5) can be reduced. The solution in the inner tube (2) is stirred by rotating the blade (4),
Its heat exchange is promoted.

製氷運転時、ブレード(4)の先端部(42)が基端部
(41)に対し回転方向前方側に位置されるように正転さ
れる。このため、ブレード(4)の先端部(42)は、溶
液からの反力で、内周面(20)に押し付けらる。よって
内周面(20)に付着する氷は確実に剥ぎ取られて、回転
ドラム(5)の凍結は防止できる。
During the ice making operation, the blade (4) is normally rotated so that the distal end (42) is positioned forward in the rotational direction with respect to the proximal end (41). Therefore, the tip portion (42) of the blade (4) is pressed against the inner peripheral surface (20) by a reaction force from the solution. Therefore, the ice adhering to the inner peripheral surface (20) is reliably peeled off, and freezing of the rotating drum (5) can be prevented.

(実施例) 第6図及び第7図に示す製氷用蒸発器(1)は、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(20)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。
(Embodiment) The ice making evaporator (1) shown in FIGS. 6 and 7 is provided with an inlet (21) for an ice making solution at one axial end and an outlet (22) for the solution at the other end. An inner tube (2), and an outer tube (3) provided with an inlet (31) and an outlet (32) for a refrigerant,
The inner pipe (2) is provided with a rotary drum (5) provided with a blade (4) that comes into sliding contact with the inner peripheral surface (20) of the inner pipe (2), and heat is transferred to the inner peripheral surface (20). As a surface, the solution is cooled by the refrigerant.

伝熱面となる内周面(20)は、所謂ホーニング加工等
の鏡面加工により、高精度に仕上げている。
The inner peripheral surface (20) serving as a heat transfer surface is finished with high accuracy by mirror finishing such as so-called honing.

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,4
c)(4d,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
℃づつ偏位させて設けている。
The blade (4) is divided into four parts along the axial length of the rotary drum (5) to form four pairs (4a, 4a) (4b, 4b) (4c, 4).
c) (4d, 4d), each pair is provided opposite to each other at a distance of 180 ° on the circumference of the rotary drum (5), and each pair is provided with an axial length of the rotary drum (5). Along each other 45
It is displaced by ° C.

又、ブレード(4)は回転ドラム(5)に、第1図に
明示するように、該ブレード(4)の基端部(41)と先
端部(42)とを結ぶ直線が、回転ドラム(5)の径方向
に対し傾斜状に延びて、先端部(42)が内周面(20)に
接触するように支持している。その支持は、第2図に示
すように、回転ドラム(5)の外周面に突設する取付片
(51)に、基端部(41)をシャフト(52)で挿通して行
うもので、該シャフト(52)を中心にブレード(4)は
揺動自由とされる。又、シャフト(52)には、一端を取
付片(51)に係止し、他端をブレード(4)に当接する
コイルバネ(53)を套嵌し、常時、ブレード(4)の先
端部(42)を内周面(20)に弾接させるようにしてい
る。
As shown in FIG. 1, the blade (4) is connected to the rotating drum (5) by a straight line connecting the base end (41) and the tip (42) of the blade (4). It extends in an inclined manner with respect to the radial direction of 5), and supports the distal end portion (42) so as to be in contact with the inner peripheral surface (20). As shown in FIG. 2, the support is performed by inserting a base end (41) with a shaft (52) through a mounting piece (51) projecting from the outer peripheral surface of the rotary drum (5). The blade (4) is free to swing about the shaft (52). The shaft (52) has one end engaged with the mounting piece (51) and the other end fitted with a coil spring (53) abutting against the blade (4). 42) is brought into contact with the inner peripheral surface (20).

更に、ブレード(4)は、全体をポリエチレン等の硬
質合成樹脂で形成するものであり、先端部(42)は、先
鋭にカットされて内周面(20)の接線方向に鋭角状に当
接されている。
Further, the blade (4) is entirely formed of a hard synthetic resin such as polyethylene, and the tip (42) is sharply cut and abuts at an acute angle in the tangential direction of the inner peripheral surface (20). Have been.

以上構成する蒸発器(1)は、第5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(22)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。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。
The evaporator (1) configured as described above, as shown in FIG.
The drive shafts (50) and (50) of the rotary drums (5) and (5) are driven by one motor (M2).
The inner pipes (2) and (2) are connected in series by a communication pipe (63), and a solution supply pipe (61) is connected to a first-stage inlet (21) and a second-stage outlet (22). The heat storage tank (6) is connected by connecting the return pipe (62), and the heat storage tank (6) and each inner pipe (2) (2) are connected via a circulation pump (7) interposed in the supply pipe (61). ) To circulate the solution. On the other hand, the outer pipes (3) and (3) are connected in parallel with each other, and the compressor (8)
Connected to a refrigeration system (10) comprising

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、該各分岐路に、凝縮した高圧液冷倍を膨張させ
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
ヘッド(16)で結合し、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 refrigerating device (10) is provided with an oil separator (11) and a water-cooled condenser (12) from the discharge side of the compressor (8), and a two-way branch path through a flow divider (13). (14) An ejector (15) provided in parallel with (14), and an expander (15) for expanding the condensed high-pressure liquid cooling in each of the branch paths, and the outer pipe (3) for evaporating the low-pressure liquid refrigerant after expansion. The outlet is connected by a head (16), and further connected to the suction side of a compressor (8) via an accumulator (17).

尚、第5図中、(18)は、凝集器(12)の出口管(12
0)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)は各エジェクター(1
5)の均圧管、又、(M3)は圧縮機モータ、(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、(H
G)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、(Th)は製氷用
溶液の出口温度を検出するサーミスタ、(M1)は循環ポ
ンプ(7)の駆動モータである。
In FIG. 5, (18) is the outlet pipe (12) of the aggregator (12).
0) and a suction pipe (80) of the compressor (8) so as to be able to exchange heat. (19) is a suction heat exchanger.
5) Equalizing tube, (M3) is a compressor motor, (SV) is a shutoff valve, (BV) is a check valve, (RI) is a liquid eye, (DF)
Is a dryer filter, (HPS) is a high pressure detector, (H
G) is the same high pressure gauge, (LPS) is the low pressure detector,
(LG) is the same low pressure gauge. Further, (Th) is a thermistor for detecting the outlet temperature of the ice making solution, and (M1) is a drive motor of the circulation pump (7).

そして、各外管(3)の出口を統合するヘッダ(16)
の出口近くに、蒸発圧力を検出する蒸発圧力検出器(P
S)を設けて、冷媒の蒸発圧力を検出可能にする。尚、
蒸発圧力検出には、前記低圧圧力検出器(LPS)で代用
できるが、外管(3)の出口に近い前記検出器(PS)の
方がより正確な値が検出できる。
And a header (16) that integrates the outlet of each outer tube (3)
Near the outlet of the evaporating pressure detector (P
S) is provided so that the evaporation pressure of the refrigerant can be detected. still,
Although the low pressure detector (LPS) can be used instead of the evaporating pressure detector, the detector (PS) closer to the outlet of the outer tube (3) can detect a more accurate value.

又、回転ドラム(5)を駆動するモータ(M2)は、例
えば三相誘導電動機を用い、相入れ替えにより正逆転可
能にする。
The motor (M2) for driving the rotary drum (5) is, for example, a three-phase induction motor, and can be rotated forward and backward by changing the phases.

こうして、前記蒸発圧力検出器(PS)の検出結果か
ら、非製氷時と製氷時とを峻別し、モータ(M2)を相入
れ替えにより正転又は逆転させる回転制御手段(9)を
設け、製氷運転の開始から、第3図に示す手順に従って
回転ドラム(5)の回転制御を行う。
Thus, from the detection result of the evaporating pressure detector (PS), rotation control means (9) for discriminating between non-ice making and ice making, and forward or reverse rotation of the motor (M2) by changing phases is provided. From the start, the rotation of the rotary drum (5) is controlled according to the procedure shown in FIG.

まず、運転開始頭初は、溶液温度及び冷媒温度が共に
高く、又、その冷媒の蒸発圧力も高く、未だ各内管
(2)内に氷の発生はなく、非製氷時であり、回転ドラ
ム(5)を、第1図中点線矢印で示す向き、すなわち、
ブレード(4)の先端部(42)が基端部(41)に対し回
転方向後方側に位置されるように逆転させる。この時、
ブレード(4)には内管(2)内の溶液の反力が作用す
るが、この溶液の反力は、該ブレード(4)を伝熱面
(20)から離間させる方向に働くことになるため、該ブ
レード(4)の先端部(42)と内周面(20)との間の接
触力が低減され、先端部(42)と内周面(20)との間の
摺動摩耗が低減できると共に、回転ドラムの回転負荷す
なわちモータ(M2)の負荷軽減もなし得る。又、内管
(2)内の溶液は、ブレード(4)が回転することによ
り、撹拌され、該溶液の冷却作用が促進されて、該溶液
の温度低下を促進できる。
First, at the beginning of the operation, both the solution temperature and the refrigerant temperature are high, and the evaporation pressure of the refrigerant is also high. (5) is indicated by a dotted arrow in FIG.
The blade (4) is reversed so that the distal end (42) is positioned rearward in the rotational direction with respect to the proximal end (41). At this time,
The reaction force of the solution in the inner tube (2) acts on the blade (4), and the reaction force of the solution acts in a direction to separate the blade (4) from the heat transfer surface (20). Therefore, the contact force between the tip (42) of the blade (4) and the inner peripheral surface (20) is reduced, and the sliding wear between the tip (42) and the inner peripheral surface (20) is reduced. In addition to the reduction, the rotational load of the rotating drum, that is, the load of the motor (M2) can be reduced. Further, the solution in the inner tube (2) is stirred by the rotation of the blade (4), so that the cooling action of the solution is promoted and the temperature of the solution can be reduced.

時間経過に伴い、第4図に示すように、溶液の出口温
度は低下していき、又、冷媒の蒸発圧力も低下してい
く。溶液が凍り始めると、伝熱面たる内周面(20)に氷
が付着するため、該内周面(20)での伝熱性能が低下
し、冷媒の蒸発圧力は、一時的に急激に低下することに
なる。この急激な圧力変化は、蒸発圧力検出器(PS)で
時々刻々検出される蒸発圧力の変化割合が急激に増加す
ることにより検出される。この急激な圧力低下の後、回
転ドラム(5)を、第1図中実線矢印で示す向き、すな
わち、ブレード(4)の先端部(42)が基端部(41)に
対し回転方向前方側に位置されるように正転させる。従
って、ブレード(4)の先端部(42)は、溶液からの反
力と、コイルスプリング(53)の付勢力とで、内周面
(20)に押し付けられ、該内周面(20)に付着する氷を
確実に剥ぎ取ることができ、回転ドラム(5)の凍結は
防止できる。
As time elapses, as shown in FIG. 4, the outlet temperature of the solution decreases, and the evaporation pressure of the refrigerant also decreases. When the solution starts to freeze, ice adheres to the inner peripheral surface (20), which is a heat transfer surface, so that the heat transfer performance on the inner peripheral surface (20) is reduced, and the evaporating pressure of the refrigerant temporarily increases suddenly. Will decrease. This rapid pressure change is detected by a sudden increase in the rate of change of the evaporation pressure detected every moment by the evaporation pressure detector (PS). After the rapid pressure drop, the rotating drum (5) is turned in the direction indicated by the solid arrow in FIG. 1, that is, the tip (42) of the blade (4) is rotated forward with respect to the base (41). Rotate forward so that it is located at Accordingly, the tip (42) of the blade (4) is pressed against the inner peripheral surface (20) by the reaction force from the solution and the urging force of the coil spring (53), and is pressed against the inner peripheral surface (20). The adhering ice can be reliably peeled off and freezing of the rotating drum (5) can be prevented.

尚、上記実施例では、検出蒸発圧力が一時的に低下す
る時を検出して、非製氷運転と製氷運転とを峻別した
が、この一時的な圧力低下後は、溶液温度はその氷結の
ためほぼ一定となり、又、溶液と冷媒との熱の授受は、
溶液の氷結のための潜熱のみで、冷媒の蒸発圧力もほぼ
一定となることから、数分程度の粗いサンプリング時間
で、サーミスタ(Th)により溶液出口温度を検出する
か、あるいは、その粗いサンプリング時間で、前記蒸発
圧力検出器(PS)により蒸発圧力を検出し、その時系列
で検出される検出結果に変化があるかどうかを調べ、一
定であるならば製氷運転に移行するようにしてもよい。
In the above embodiment, the non-ice making operation and the ice making operation are distinguished from each other by detecting the time when the detected evaporation pressure temporarily drops, but after this temporary pressure drop, the solution temperature is reduced due to the freezing. It is almost constant, and the exchange of heat between the solution and the refrigerant is
Since only the latent heat for freezing the solution and the evaporating pressure of the refrigerant is almost constant, the solution outlet temperature is detected by thermistor (Th) in a rough sampling time of several minutes, or the rough sampling time is used. Then, the evaporating pressure may be detected by the evaporating pressure detector (PS), and it may be determined whether there is a change in the detection result detected in the time series.

又、上記実施例では、一連の製氷運転の中で、運転開
始当初と時間経過後とで非製氷時と製氷時とを峻別する
ようにしたが、非製氷/製氷の峻別は、これに限るもの
ではなく、例えば、製氷用蒸発器(1)が、氷の生成の
みならず、冷水の生成あるいは温水の生成などの多目的
に使用されるような場合には、氷を作ろとする運転と、
温水等を生成する運転とで、非製氷時と製氷時とを峻別
するようにしてもよい。この場合、2種類の運転を切換
えるスイッチ等に連動して、回転ドラム(5)の正逆転
制御を行うこともできる。
Further, in the above-described embodiment, in the series of ice making operations, non-ice making and ice making are distinguished at the beginning of operation and after a lapse of time. However, the distinction of non-ice making / ice making is limited to this. For example, when the evaporator (1) for ice making is used not only for producing ice but also for various purposes such as producing cold water or producing hot water, an operation for producing ice is performed.
The non-ice making time and the ice making time may be distinguished by the operation for generating hot water or the like. In this case, the forward / reverse control of the rotary drum (5) can be performed in conjunction with a switch or the like for switching between two types of operation.

(発明の効果) 以上、本発明では、ブレード(4)を回転ドラム
(5)に、ブレード(4)の基端部(41)と先端部(4
2)とを結ぶ直線が、回転ドラム(5)の放線に対し傾
斜状に延びて、先端部(42)が内管(2)の内周面(2
0)に接触するごとく支持すると共に、製氷運転時、回
転ドラム(5)を、ブレード(4)の先端部(42)が基
端部(41)に対し回転方向前方側に位置されるように正
転させ、又、非製氷運転時、回転ドラム(5)を、ブレ
ード(4)の先端部(42)が基端部(41)に対し回転方
向後方側に位置されるように逆転させるようにしたか
ら、製氷運転時には、ブレード(4)の内周面(20)へ
の押し付け力を緩和できると共に、回転ドラム(5)の
回転負荷を低減することができ、又、製氷運転時には、
内周面(20)に付着する氷を確実にかきとることがで
き、運転全般からみた、ブレード(4)の先端部(42)
及び内管(2)の内周面(20)の耐久性を向上でき、そ
れでいて、良好な製氷が行えるのである。
(Effects of the Invention) As described above, in the present invention, the blade (4) is attached to the rotating drum (5) by the base end (41) and the tip (4) of the blade (4).
2) extends obliquely with respect to the radiation of the rotary drum (5), and the tip end (42) extends to the inner circumferential surface (2) of the inner pipe (2).
0), and at the time of ice making operation, rotate the rotating drum (5) so that the tip (42) of the blade (4) is positioned forward in the rotation direction with respect to the base (41). The rotating drum (5) is rotated forward so that the tip (42) of the blade (4) is positioned rearward in the rotational direction with respect to the base (41) during non-ice making operation. Therefore, during the ice making operation, the pressing force of the blade (4) against the inner peripheral surface (20) can be reduced, and the rotating load of the rotating drum (5) can be reduced.
The ice adhering to the inner peripheral surface (20) can be reliably scraped off, and the tip (42) of the blade (4) is viewed from the overall operation.
In addition, the durability of the inner peripheral surface (20) of the inner pipe (2) can be improved, and good ice making can be performed.

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

第1図は本発明製氷用蒸発器の要部断面図、第2図は同
要部の拡大斜視図、第3図は回転制御手段による制御手
順を示す図、第4図は一連の製氷運転における溶液出口
温度と冷媒の蒸発圧力との経時変化を示す図、第5図は
製氷装置全体の配管系統図、第6図は製氷用蒸発器の全
体を示す一部切欠側断面図、第7図はその縦断面図、第
8図は従来例の配管系統図である。 (2)……内管 (20)……内周面 (3)……外管 (4)……ブレード (41)……基端部 (42)……先端部 (5)……回転ドラム (9)……回転制御手段
FIG. 1 is a sectional view of a main part of the evaporator for ice making of the present invention, FIG. 2 is an enlarged perspective view of the main part, FIG. 3 is a view showing a control procedure by a rotation control means, and FIG. FIG. 5 is a diagram showing the change over time of the solution outlet temperature and the refrigerant evaporation pressure in FIG. 5, FIG. 5 is a piping system diagram of the entire ice making device, FIG. 6 is a partially cutaway sectional view showing the entire ice making evaporator, and FIG. The figure is a longitudinal sectional view, and FIG. 8 is a piping system diagram of a conventional example. (2) ... inner tube (20) ... inner peripheral surface (3) ... outer tube (4) ... blade (41) ... base end (42) ... tip (5) ... rotating drum (9) Rotation control means

───────────────────────────────────────────────────── フロントページの続き (72)発明者 倉多 明 大阪府堺市金岡町1304番地 ダイキン工 業株式会社堺製作所金岡工場内 (56)参考文献 特開 昭58−2567(JP,A) 特開 平1−210788(JP,A) 実公 昭42−18539(JP,Y1) ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Akira Kurata 1304 Kanaoka-cho, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Factory Kanaoka Plant (56) References JP-A-58-2567 (JP, A) 1-210788 Kaihei (JP, A) 42-18539 Jiji (JP, Y1)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】製氷用溶液を流通させる内管(2)と、冷
媒を流通させる外管(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
(20)を伝熱面として前記溶液と冷媒との熱交換を行わ
せ、前記外管(3)に供給する冷媒の温度により前記溶
液の製氷運転と非製氷運転とを可能にした製氷用蒸発器
であって、前記ブレード(4)を前記回転ドラム(5)
に、該ブレード(4)の基端部(41)と先端部(42)と
を結ぶ直線が、前記回転ドラム(5)の径方向に対し傾
斜状に延びて、前記先端部(42)が前記内周面(20)に
接触するごとく支持すると共に、製氷運転時、前記回転
ドラム(5)を、前記ブレード(4)の先端部(42)が
基端部(41)に対し回転方向前方側に位置されるように
正転させ、又、非製氷運転時、前記回転ドラム(5)
を、前記ブレード(4)の先端部(42)が基端部(41)
に対し回転方向後方側に位置されるように逆転させる回
転制御手段(9)を設けたことを特徴とする製氷用蒸発
器。
1. An inner tube (2) comprising an inner tube (2) for flowing a solution for ice making and an outer tube (3) for flowing a refrigerant.
And a rotary drum (5) provided with a blade (4) that is in sliding contact with the inner peripheral surface (20) of the inner pipe (2), and the solution and the refrigerant are formed using the inner peripheral surface (20) as a heat transfer surface. And an evaporator for ice making which enables an ice making operation and a non-ice making operation of the solution according to the temperature of the refrigerant supplied to the outer tube (3), wherein the blade (4) is Rotary drum (5)
In addition, a straight line connecting the base end (41) and the tip (42) of the blade (4) extends obliquely with respect to the radial direction of the rotary drum (5), and the tip (42) is In addition to supporting the inner peripheral surface (20) so as to come into contact with the inner peripheral surface (20), the tip end (42) of the blade (4) is rotated forward with respect to the base end (41) in the ice making operation. Side, and during the non-ice making operation, the rotating drum (5)
The tip (42) of the blade (4) is the base (41)
An evaporator for ice making, characterized in that a rotation control means (9) for reversely rotating the ice evaporator is provided so as to be positioned rearward in the rotation direction.
JP63035629A 1988-02-18 1988-02-18 Ice making evaporator Expired - Fee Related JP2585687B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63035629A JP2585687B2 (en) 1988-02-18 1988-02-18 Ice making evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63035629A JP2585687B2 (en) 1988-02-18 1988-02-18 Ice making evaporator

Publications (2)

Publication Number Publication Date
JPH01210784A JPH01210784A (en) 1989-08-24
JP2585687B2 true JP2585687B2 (en) 1997-02-26

Family

ID=12447160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63035629A Expired - Fee Related JP2585687B2 (en) 1988-02-18 1988-02-18 Ice making evaporator

Country Status (1)

Country Link
JP (1) JP2585687B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6262121B2 (en) * 2014-11-11 2018-01-17 アイスマン株式会社 Artificial snowfall equipment
JP6575669B2 (en) * 2018-01-15 2019-09-18 ダイキン工業株式会社 Ice making system

Also Published As

Publication number Publication date
JPH01210784A (en) 1989-08-24

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