JP2003056954A - Ice making machine - Google Patents

Ice making machine

Info

Publication number
JP2003056954A
JP2003056954A JP2001244335A JP2001244335A JP2003056954A JP 2003056954 A JP2003056954 A JP 2003056954A JP 2001244335 A JP2001244335 A JP 2001244335A JP 2001244335 A JP2001244335 A JP 2001244335A JP 2003056954 A JP2003056954 A JP 2003056954A
Authority
JP
Japan
Prior art keywords
refrigerant
ice
ice making
peripheral surface
making machine
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
Application number
JP2001244335A
Other languages
Japanese (ja)
Inventor
Nobuhiko Kato
暢彦 加藤
Yoshiro Kumakiri
義朗 熊切
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.)
Hoshizaki Electric Co Ltd
Original Assignee
Hoshizaki Electric 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 Hoshizaki Electric Co Ltd filed Critical Hoshizaki Electric Co Ltd
Priority to JP2001244335A priority Critical patent/JP2003056954A/en
Publication of JP2003056954A publication Critical patent/JP2003056954A/en
Pending legal-status Critical Current

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  • Production, Working, Storing, Or Distribution Of Ice (AREA)

Abstract

PROBLEM TO BE SOLVED: To smooth the flow of a refrigerant in an evaporator for a drum type ice making machine. SOLUTION: In the ice making machine, ice making water is supplied to the inner peripheral surface of an inner drum of inner and outer drums cooled by the refrigerant to produce ice, while the produced ice is separated by a separating edge driven so as to be turned along the inner peripheral surface of the inner drum. The inner and outer drums are provided with a flange at the upper or the lower end part thereof while the flange is provided with the suction port or the discharging port of the refrigerant, whereby the refrigerant flows smoothly and the ice is produced efficiently.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は内外筒構造であるド
ラム式の製氷機に関し、特に冷媒の流れを円滑にする冷
媒流路構造を備えた製氷機に関する。 【0002】 【従来の技術】従来フレーク状の氷を製造するものとし
て、ドラム式の製氷機が知られている。このドラム式製
氷機は、図6に示すように、縦向き内外筒3が冷凍サイ
クルの一部を構成する蒸発器として機能し、断熱材を挟
んで筒形のケース4内に収容されている。内外筒3の上
方には製氷用水を貯める散水タンク16が設置され、そ
こから内外筒3の内周面の上端部分を指向する複数本の
パイプ27が放射状に突設されている。また、内外筒3
の中心には減速機付きのモータ13で駆動される縦方向
の回転軸7が設けられ、この回転軸7に、先端を鋸歯状
とした剥離刃31が取り付けられている。そして、ポン
プ22によってフロートタンク20から散水タンク16
に汲み上げられた製氷用水は、散水パイプ27から内外
筒3の内周面に流下されつつ冷却されて氷が生成され、
その氷が回転駆動される剥離刃31で順次に削り取られ
ることでフレーク状の氷が得られ、落下して、製氷部2
を載置した貯氷庫1内に貯められるようになっている。 【0003】 【発明が解決しようとする課題】ところで、従来のドラ
ム式製氷機の蒸発器部分は、図7に示すように、内外筒
3の内筒、外筒の二重筒の隙間に、螺旋状の板32を所
定間隔開けて取り付けた冷媒流通路構造を備えており、
この蒸発器を流通する冷媒は、蒸発器の下側側方にある
冷媒吸入口34から入り、内筒内表面6に流下する水と
熱交換し、内表面6に氷着させながら、冷媒液から冷媒
ガスとなって蒸発器の上側側方にある冷媒吐出口35か
ら出るようになっている。このため、従来のドラム式製
氷機の製氷時には、蒸発器冷媒流通路の始端である冷媒
吸入口34より下流側には冷媒が流れ難く、また蒸発器
冷媒流通路の終端である冷媒吐出口35より上流側には
冷媒が冷媒吐出口35を通り過ぎてしまい、通り過ぎた
冷媒が戻ると冷媒吐出口35から出ようとしている冷媒
と衝突し、乱流が発生し、冷媒が流れ難くなり、内表面
6に有効に氷着されないことがあった。本発明は上記の
ような事情に基づいて発明されたものであって、その目
的は、冷媒を円滑に流す冷媒流通路構造を備えた製氷機
を提供するところにある。 【0004】 【課題を解決するための手段】上記の目的を達成するた
めの手段として、冷媒により冷却される内外筒の内筒内
周面に製氷用水を供給して氷を生成し、前記内筒内周面
に沿って回転駆動される剥離刃によって生成された氷を
剥離するようにした製氷機において、前記内外筒の上ま
たは下端部の周囲にフランジを備え、前記フランジに冷
媒の吸入口または吐出口を備えたことを特徴としてい
る。 【0005】 【発明の作用及び効果】本発明は、冷媒により冷却され
る内外筒の内筒内周面に製氷用水を供給して氷を生成
し、前記内筒内周面に沿って回転駆動される剥離刃によ
って生成された氷を剥離するようにした製氷機におい
て、前記内外筒の上または下端部の周囲にフランジを備
え、前記フランジに冷媒の吸入口または吐出口を備えた
ことにより、流通冷媒が内外筒の上または下端部に備わ
る冷媒吸入口または吐出口近傍の冷媒が流れ難い部分で
も、円滑に流れるようになり、冷媒が製氷部である蒸発
器にて効果的に熱交換に使用されて、製氷が効率よく行
われるようになった。 【0006】 【発明の実施の形態】本実施形態の製氷機は、図1、図
2に示すように、貯氷庫1の上に製氷部2を設置して形
成されており、製氷部2は、断熱材を介して、略円筒形
のカバー4で覆われており、カバー4の上面には、連結
箱12を介してギヤードモータ13が装備され回転軸7
と連結されている。製氷部2の内部には縦向きの内外筒
3が備えられ、内外筒3の間に環形をなす冷媒の流通路
5が構成され、その中に冷凍サイクルの冷媒が下方から
上方に向けて流通する間に冷却がなされるようになって
おり、内外筒3の内筒内周面6が氷の氷着面とされてい
る。 【0007】また、内外筒3の中心には回転軸7が設け
られ、内外筒3の上下の位置に配された軸受によって回
転自由に支持されている。回転軸7における内外筒3の
上端と対応する位置には、散水タンク16が、回転軸7
に嵌めて一体回転可能に取り付けられている。この散水
タンク16の上面には、製氷用水の供給管18がカバー
4の上面を貫通して臨んでいる。一方、製氷部2の側方
には、水源から供給された製氷用水を貯留するフロート
タンク20が装備され、フロートタンク20にはポンプ
22が設けられ、このポンプ22が駆動されると、フロ
ートタンク20内の製氷用水が汲み上げられて、散水タ
ンク16内に供給されるようになっている。 【0008】上記の散水タンク16の外周面には、その
半周の領域にわたって、複数本(例えば6本程)の散水
パイプ27が等角度間隔を開けて放射状に突設されてい
る。また、回転軸7には、内外筒3の内周面6に生成さ
れた氷を削り取るための剥離刃31が一体回転可能に設
けられている。 【0009】図3に示すように、上記ドラム式製氷機に
おける蒸発器は、内筒と外筒の二重の円筒形をなす縦向
きの内外筒3が備えられ、その内外筒3の上下端部に外
向きのフランジ8、8を備えている。また、流通路5
は、内外の筒の間に環形をなしており、その流通路5の
中には、ステンレス製の螺旋状の板32を上下に所定間
隔開けて備え、内外の筒と螺旋状の板32の間を、配管
33を通過する冷凍サイクルの冷媒が下方にある吸入口
9から上方にある吐出口11に向けて流通させるように
なっている。 【0010】図4、図5に示すように、入口および出口
金具10、11は箱形状であり、内外筒3の上下のフラ
ンジ8、8に、冷媒の吸入口9および吐出口11を所定
の幅と流通路5である内外筒3の間隔の長さ分開けて備
え、その吸入口9および吐出口11を被うようにフラン
ジ8、8に溶接等で固着されている。また、入口および
出口金具に備える冷媒を通す配管33は、冷媒が流れ易
いように、吸入口9および吐出口11の位置に対向して
溶着させている。 【0011】本発明は上記のような構造であって、続い
てその作用を説明する。稼働に当たっては冷凍サイクル
を起動するとともに、ポンプ22を駆動し、またギヤー
ドモータ13を起動して回転軸7を回転駆動する。そう
すると、ポンプ22によりフロートタンク20から散水
タンク16に汲み上げられた製氷用水は、回転する散水
パイプ27から内外筒3の内周面6の上端部分に順次に
供給され、内外筒3の内周面6を流下しつつ冷却されて
氷が生成される。それとともに、複数の散水パイプ27
を追いかけるようにして剥離刃31が回転して、生成さ
れた氷がその剥離刃31で順次に削り取られることでフ
レーク状の氷が得られ落下して、製氷部2の下面に配さ
れた貯氷庫1の天井面の開口を通してその中に貯められ
る。以上の繰り返しによりフレーク氷が順次に製造され
て貯氷庫1に貯められる。 【0012】上記の本発明のドラム式製氷機の製氷中
は、内外筒の上下端部のフランジ8、8の流通路5の始
端近傍には吸入口9と流通路5の終端近傍には吐出口を
備え、それぞれの口に配管用金具を被せて付けたので、
流通冷媒は円滑に流れるようになり、冷媒が製氷部であ
る蒸発器にて効果的に熱交換に使用されて、氷着が効率
よく行われるようになった。また、冷媒の吐出口が冷媒
流通路の終端から上方に備わっていることにより、冷媒
ガスを優先的に圧縮機に吸入させることにより、液バッ
クを防止できた。 【0013】本発明の別実施形態として、内外筒3の上
または下端部のフランジ8、8に、冷媒吸入口9または
吐出口11のどちらかを一方を備え、その口に配管用金
具を付けただけでもよい。この構造により、冷媒が充分
に円滑に流れるようになり、内周面6への氷着が効率よ
く行われるようになった。また、本発明のドラム式製氷
機は、冷媒を流通路5内の下から上に流すが、上から下
に流すようにしてもよい。この場合、上フランジに備わ
るのが吸入口で、下フランジに備わるのが吐出口とな
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type ice maker having an inner and outer cylindrical structure, and more particularly to an ice maker having a refrigerant flow path structure for smoothing the flow of a refrigerant. . 2. Description of the Related Art Conventionally, a drum type ice maker has been known as one for producing flake ice. In this drum type ice making machine, as shown in FIG. 6, the vertical inner and outer cylinders 3 function as an evaporator constituting a part of a refrigeration cycle, and are housed in a cylindrical case 4 with a heat insulating material interposed therebetween. . A watering tank 16 for storing ice-making water is provided above the inner and outer cylinders 3, and a plurality of pipes 27 projecting radially from the sprinkling tank 16 toward the upper end of the inner peripheral surface of the inner and outer cylinders 3. The inner and outer cylinders 3
Is provided at the center thereof with a vertical rotating shaft 7 driven by a motor 13 equipped with a speed reducer, and a peeling blade 31 having a sawtooth-shaped tip is attached to the rotating shaft 7. Then, the water spray tank 16 is moved from the float tank 20 by the pump 22.
The ice-making water pumped to the water is cooled while flowing down from the watering pipe 27 to the inner peripheral surface of the inner and outer cylinders 3 to produce ice,
The ice is sequentially scraped off by the peeling blade 31 that is driven to rotate, so that flake-like ice is obtained.
Are stored in the ice storage 1 on which the ice is placed. [0003] By the way, as shown in FIG. 7, the evaporator portion of the conventional drum type ice making machine is provided with a gap between an inner cylinder of the inner and outer cylinders 3 and a double cylinder of the outer cylinder. A refrigerant flow passage structure in which spiral plates 32 are attached at predetermined intervals,
The refrigerant flowing through the evaporator enters through the refrigerant suction port 34 on the lower side of the evaporator, exchanges heat with water flowing down to the inner surface 6 of the inner cylinder, and causes the refrigerant liquid to freeze on the inner surface 6 while being iced. From the refrigerant outlet 35 at the upper side of the evaporator. For this reason, at the time of ice making of the conventional drum type ice making machine, it is difficult for the refrigerant to flow downstream of the refrigerant suction port 34 which is the start end of the evaporator refrigerant flow path, and the refrigerant discharge port 35 which is the end of the evaporator refrigerant flow path. On the more upstream side, the refrigerant passes through the refrigerant discharge port 35, and when the passed refrigerant returns, the refrigerant collides with the refrigerant that is about to exit from the refrigerant discharge port 35, turbulent flow occurs, the refrigerant becomes difficult to flow, and the inner surface 6 was not effectively frozen. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ice making machine having a refrigerant flow passage structure through which a refrigerant flows smoothly. [0004] As means for achieving the above object, as a means for supplying ice making water to the inner peripheral surface of the inner and outer cylinders cooled by a refrigerant, ice is generated. An ice making machine configured to peel off ice generated by a peeling blade that is rotationally driven along an inner peripheral surface of a cylinder, wherein a flange is provided around an upper or lower end of the inner and outer cylinders, and a refrigerant suction port is provided in the flange. Alternatively, a discharge port is provided. According to the present invention, ice is produced by supplying ice-making water to the inner peripheral surface of the inner and outer cylinders cooled by a refrigerant, and is driven to rotate along the inner peripheral surface of the inner cylinder. In the ice making machine to peel off the ice generated by the peeling blade to be provided, by providing a flange around the upper or lower end of the inner and outer cylinders, by having a suction port or a discharge port of the refrigerant in the flange, Even in the part where the flowing refrigerant is hard to flow near the refrigerant suction port or the discharge port provided at the upper or lower end of the inner and outer cylinders, the refrigerant flows smoothly, and the refrigerant effectively exchanges heat with the evaporator which is the ice making part. It has been used to make ice more efficiently. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An ice maker according to the present embodiment is formed by installing an ice maker 2 on an ice storage 1 as shown in FIGS. The cover 4 is covered with a substantially cylindrical cover 4 via a heat insulating material.
Is linked to The inside of the ice making unit 2 is provided with a vertically oriented inner and outer cylinder 3, and an annular refrigerant flow passage 5 is formed between the inner and outer cylinders 3, in which the refrigerant of the refrigeration cycle flows upward from below. During the cooling, the inner peripheral surface 6 of the inner and outer cylinders 3 is an icing surface of ice. A rotating shaft 7 is provided at the center of the inner and outer cylinders 3 and is rotatably supported by bearings arranged above and below the inner and outer cylinders 3. At a position corresponding to the upper end of the inner and outer cylinders 3 on the rotating shaft 7, a watering tank 16 is provided.
It is attached so that it can rotate integrally with it. An ice making water supply pipe 18 penetrates through the upper surface of the cover 4 on the upper surface of the watering tank 16. On the other hand, a float tank 20 for storing ice-making water supplied from a water source is provided on a side of the ice making unit 2, and a pump 22 is provided in the float tank 20. When the pump 22 is driven, a float tank 20 is provided. The ice making water in 20 is pumped up and supplied into the watering tank 16. On the outer peripheral surface of the watering tank 16, a plurality (for example, about six) of watering pipes 27 are radially projected at equal angular intervals over a half circumference thereof. In addition, the rotating shaft 7 is provided with a peeling blade 31 for scraping ice generated on the inner peripheral surface 6 of the inner and outer cylinders 3 so as to be integrally rotatable. As shown in FIG. 3, the evaporator of the above-mentioned drum type ice making machine is provided with a vertically oriented inner / outer cylinder 3 having a double cylindrical shape of an inner cylinder and an outer cylinder. The part is provided with outward flanges 8,8. In addition, the flow path 5
Has an annular shape between the inner and outer cylinders, and has stainless steel helical plates 32 provided at predetermined intervals in the flow passage 5 in the vertical direction. In the space, the refrigerant of the refrigeration cycle passing through the pipe 33 flows from the lower intake port 9 to the upper discharge port 11. As shown in FIGS. 4 and 5, the inlet and outlet fittings 10 and 11 are box-shaped, and the upper and lower flanges 8 and 8 of the inner and outer cylinders 3 are provided with predetermined inlets 9 and outlets 11 of the refrigerant. It is provided with an interval of the width and the length of the space between the inner and outer cylinders 3 that are the flow passages 5, and is fixed to the flanges 8, 8 by welding or the like so as to cover the inlet 9 and the outlet 11. Further, a pipe 33 for passing the refrigerant provided in the inlet and outlet fittings is welded to oppose the positions of the suction port 9 and the discharge port 11 so that the refrigerant can easily flow. The present invention has the above structure, and its operation will be described below. In operation, the refrigeration cycle is started, the pump 22 is driven, and the geared motor 13 is started to drive the rotary shaft 7 to rotate. Then, the ice making water pumped from the float tank 20 to the watering tank 16 by the pump 22 is sequentially supplied to the upper end portion of the inner peripheral surface 6 of the inner and outer cylinders 3 from the rotating watering pipe 27, and the inner peripheral surface of the inner and outer cylinders 3 6 and is cooled down to produce ice. At the same time, a plurality of watering pipes 27
The peeling blade 31 rotates so as to chase the ice, and the generated ice is sequentially scraped off by the peeling blade 31 to obtain flake-like ice, which falls and is stored on the lower surface of the ice making unit 2. It is stored in the storage 1 through an opening in the ceiling. By repeating the above, flake ice is sequentially produced and stored in the ice storage 1. During the ice making of the drum type ice making machine according to the present invention, the suction port 9 is provided near the starting end of the flow passage 5 of the upper and lower ends of the inner and outer cylinders, and the discharge port is provided near the end of the flow passage 5 at the end. Since there are outlets, each mouth is covered with a pipe fitting,
The flowing refrigerant has flowed smoothly, and the refrigerant has been effectively used for heat exchange in an evaporator which is an ice making unit, so that ice deposition can be performed efficiently. Further, since the refrigerant outlet is provided above the end of the refrigerant flow passage, the refrigerant gas can be preferentially sucked into the compressor, thereby preventing liquid back. As another embodiment of the present invention, either one of the refrigerant suction port 9 or the discharge port 11 is provided on the upper or lower flange 8, 8 of the inner or outer cylinder 3, and a pipe fitting is attached to the port. May just be. With this structure, the refrigerant can flow sufficiently smoothly, and icing on the inner peripheral surface 6 can be performed efficiently. Further, in the drum type ice making machine of the present invention, the refrigerant flows from the lower side to the upper side in the flow passage 5, but may flow from the upper side to the lower side. In this case, the upper flange is a suction port, and the lower flange is a discharge port.

【図面の簡単な説明】 【図1】本発明の製氷機の外観図 【図2】図1の断面図 【図3】本発明の内外筒(蒸発器)の断面概要図 【図4】本発明の入口または出口金具の要部取付斜視図 【図5】図3のA−A線またはB−B線断面図 【図6】従来の製氷機の断面図 【図7】従来の内外筒(蒸発器)の断面概要図 【符号の説明】 1…貯氷庫 2…製氷部 3…内外筒(蒸発器) 4…カバー 5…流通路 6…内筒内周面 7…回転軸 8…フランジ 9…吸入口 10…入口金具 11…吐出口 12…出口金具 13…ギヤードモータ 16…散水タンク 18…供給管 20…フロートタンク 21…流出口 22…ポンプ 27…散水パイプ 31…剥離刃 32…螺旋状の板 33…配管 34…吸入口 35…吐出口[Brief description of the drawings] FIG. 1 is an external view of an ice making machine according to the present invention. FIG. 2 is a sectional view of FIG. FIG. 3 is a schematic cross-sectional view of an inner / outer cylinder (evaporator) of the present invention. FIG. 4 is a perspective view showing a main part of the inlet or outlet fitting of the present invention. FIG. 5 is a sectional view taken along line AA or BB in FIG. 3; FIG. 6 is a sectional view of a conventional ice making machine. FIG. 7 is a schematic sectional view of a conventional inner / outer cylinder (evaporator). [Explanation of symbols] 1… Ice storage 2… Ice making 3. Inner and outer cylinders (evaporator) 4 ... Cover 5 ... Flow passage 6 ... Inner cylinder inner peripheral surface 7 ... Rotary axis 8 ... Flange 9 ... Suction port 10 Entrance bracket 11 ... Discharge port 12 ... Exit fitting 13: Geared motor 16 ... watering tank 18 ... Supply pipe 20 ... Float tank 21 ... Outlet 22 ... Pump 27 ... watering pipe 31 ... Peeling blade 32: spiral plate 33… Piping 34 ... Suction port 35 ... Discharge port

Claims (1)

【特許請求の範囲】 【請求項1】冷媒により冷却される内外筒の内筒内周面
に製氷用水を供給して氷を生成し、前記内筒内周面に沿
って回転駆動される剥離刃によって生成された氷を剥離
するようにした製氷機において、前記内外筒の上または
下端部の周囲にフランジを備え、前記フランジに冷媒の
吸入口または吐出口を備えたことを特徴とする製氷機。
Claims: 1. An exfoliating device that supplies ice-making water to an inner peripheral surface of an inner cylinder of an inner and outer cylinder cooled by a refrigerant to generate ice, and is rotatably driven along the inner peripheral surface of the inner cylinder. An ice making machine configured to peel off ice generated by a blade, comprising: a flange around the upper or lower end of the inner and outer cylinders; and a refrigerant inlet or outlet on the flange. Machine.
JP2001244335A 2001-08-10 2001-08-10 Ice making machine Pending JP2003056954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001244335A JP2003056954A (en) 2001-08-10 2001-08-10 Ice making machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001244335A JP2003056954A (en) 2001-08-10 2001-08-10 Ice making machine

Publications (1)

Publication Number Publication Date
JP2003056954A true JP2003056954A (en) 2003-02-26

Family

ID=19074279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001244335A Pending JP2003056954A (en) 2001-08-10 2001-08-10 Ice making machine

Country Status (1)

Country Link
JP (1) JP2003056954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008286469A (en) * 2007-05-17 2008-11-27 Hoshizaki Electric Co Ltd Refrigerating device and ice making machine using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008286469A (en) * 2007-05-17 2008-11-27 Hoshizaki Electric Co Ltd Refrigerating device and ice making machine using the same

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