JP4714935B2 - Ice heat storage device - Google Patents

Ice heat storage device Download PDF

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JP4714935B2
JP4714935B2 JP2005067712A JP2005067712A JP4714935B2 JP 4714935 B2 JP4714935 B2 JP 4714935B2 JP 2005067712 A JP2005067712 A JP 2005067712A JP 2005067712 A JP2005067712 A JP 2005067712A JP 4714935 B2 JP4714935 B2 JP 4714935B2
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main pipe
return
supply
pipe
side main
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JP2006250441A (en
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潤一 松澤
晃 中川
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Toyox Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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Description

この発明は、夜間電力を利用して冷却装置を運転し水を氷に変換してその潜熱による冷却エネルギーを蓄積し、この氷を冷却源として利用可能にする氷蓄熱装置に関する。   The present invention relates to an ice heat storage device that operates a cooling device by using nighttime electric power, converts water into ice, accumulates cooling energy due to the latent heat, and can use the ice as a cooling source.

従来、いわゆる氷蓄熱装置は、例えば上方が開口した矩形の氷蓄熱タンクが設けられ、氷蓄熱タンクの上端開口部付近には、互いに平行な一対の辺の内側に沿って、供給側主配管と、戻り側主配管が設けられている。供給側主配管と戻り側主配管は、一端部が閉鎖され、他端部は氷蓄熱タンクの側面を貫通して外側に挿通されている。そして、供給側主配管は、供給用の固定配管に接続され不凍液を冷却する熱交換器の不凍液出口に接続され、戻り側主配管は、戻り用の固定配管に接続され熱交換器の不凍液入口に接続されている。   Conventionally, a so-called ice heat storage device is provided with, for example, a rectangular ice heat storage tank that opens upward, and near the upper end opening of the ice heat storage tank, along the inside of a pair of sides parallel to each other, A return-side main pipe is provided. One end of the supply side main pipe and the return side main pipe is closed, and the other end is inserted outside through the side surface of the ice heat storage tank. The supply side main pipe is connected to the supply fixed pipe and connected to the antifreeze outlet of the heat exchanger that cools the antifreeze liquid, and the return side main pipe is connected to the return fixed pipe and connected to the antifreeze liquid inlet of the heat exchanger It is connected to the.

供給側主配管には、接続用の透孔が所定間隔で設けられ、この透孔に供給側メインパイプが接続されている。供給側メインパイプには、細い熱交換パイプが一体に複数本接続され、この熱交換パイプの先端は、氷蓄熱タンクの中を通過して戻り側メインパイプに接続されている。戻り側メインパイプは、さらに戻り側主配管に設けられた接続用の透孔に差し込まれている。
特開２０００−９７４５５号公報 特開２００１−２４１７０４号公報 The supply-side main pipe is provided with connecting through holes at predetermined intervals, and the supply-side main pipe is connected to the through-holes. A plurality of thin heat exchange pipes are integrally connected to the supply side main pipe, and the tip of the heat exchange pipe passes through the ice heat storage tank and is connected to the return side main pipe. The return side main pipe is further inserted into a connection through hole provided in the return side main pipe.
JP 2000-97455 A JP 2001-241704 A

上記従来の技術の場合、供給側主配管と戻り側主配管を氷蓄熱タンクの内側に配置すると、その部分には熱交換パイプが位置しないにもかかわらず、その分氷蓄熱タンクの大きさが大きくなり、設置効率が悪いという問題があった。一方、供給側主配管と戻り側主配管を氷蓄熱タンクの上方に配置した場合、メインパイプとともに熱交換パイプを交換する際に、供給側主配管と戻り側主配管を外さないと交換できないという問題があった。さらに、供給側主配管と戻り側主配管に各メインパイプが直接固定されているため、熱交換パイプを交換する際にメインパイプを外すとき、供給側主配管と戻り側主配管も氷蓄熱タンクから外さなければならない構造であった。   In the case of the above-described conventional technology, when the supply side main pipe and the return side main pipe are arranged inside the ice heat storage tank, the size of the ice heat storage tank is reduced by that amount even though the heat exchange pipe is not located there. There was a problem that it became large and installation efficiency was poor. On the other hand, when the supply side main pipe and the return side main pipe are arranged above the ice heat storage tank, when replacing the heat exchange pipe together with the main pipe, the supply side main pipe and the return side main pipe cannot be replaced unless they are removed. There was a problem. In addition, each main pipe is directly fixed to the supply side main pipe and the return side main pipe, so when removing the main pipe when replacing the heat exchange pipe, the supply side main pipe and the return side main pipe are also in the ice heat storage tank. It was a structure that had to be removed.

従って、一部の熱交換パイプとメインパイプだけを自由に取り外したり取り付けたりすることができず、熱交換パイプやメインパイプの補修には手間がかかり、メンテナンスに時間と工数がかかり、不便であった。   Therefore, it is not possible to freely remove or attach only some heat exchange pipes and main pipes, repairing the heat exchange pipes and main pipes is time consuming, requiring time and man-hours for maintenance, and inconvenient. It was.

また、氷蓄熱装置の熱効率を向上させるためには、より細い熱交換パイプをより多く取り付けて不凍液を流すことが好ましいが、熱交換パイプが細くて数が多いほど、各熱交換パイプに均一に不凍液を流すことが困難であった。   In order to improve the thermal efficiency of the ice heat storage device, it is preferable to install more thin heat exchange pipes and flow antifreeze liquid, but the smaller the heat exchange pipes, the more uniformly the heat exchange pipes. It was difficult to flow antifreeze.

この発明は、上記従来の技術の問題点に鑑みてなされたものであり、熱交換パイプのメンテナンスを容易に行うことが可能であり、熱交換効率も良好な氷蓄熱装置を提供することを目的とする。   The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an ice heat storage device that can easily perform maintenance of a heat exchange pipe and has good heat exchange efficiency. And

本発明は、断熱性を有する氷蓄熱タンクと、前記氷蓄熱タンクの開口部上方に設置され前記氷蓄熱タンクに不凍液を循環させる供給側主配管と戻り側主配管とを備え、前記供給側主配管と前記戻り側主配管の間隔は、前記供給側主配管及び前記戻り側主配管に対して垂直に位置した前記氷蓄熱タンクの側面の幅の約１／２乃至僅かに広い幅に設定され、前記供給側主配管と前記戻り側主配管の下に設置され前記供給側主配管と前記戻り側主配管の間隔よりも短く形成された供給用メインパイプと戻り用メインパイプと、前記供給用メインパイプと前記戻り用メインパイプの側面に両端が各々接続され前記氷蓄熱タンクの底部近傍まで達して折り返された多数の熱交換パイプと、前記供給側主配管と前記供給用メインパイプを連通させる供給口連結管と、前記戻り側主配管と前記戻り用メインパイプを連通させる戻り口連結管とが設けられ、前記供給用メインパイプと前記戻り用メインパイプ及びその間に接続された前記熱交換パイプを一体の熱交換パイプマットとして、前記熱交換パイプマットは、前記供給用メインパイプと前記戻り用メインパイプの長手方向が平行であり、前記供給用メインパイプと前記戻り用メインパイプの長手方向の両端が長手方向に垂直な方向でほぼそろえられ、前記供給側主配管及び前記戻り側主配管に対して垂直に位置した前記氷蓄熱タンクの側面の幅の約１／２より狭い幅に設定され、前記供給側主配管と前記戻り側主配管に対してほぼ垂直に位置し、この熱交換パイプマットを前記供給側主配管と前記戻り側主配管の間から出し入れ可能とした氷蓄熱装置である。 The present invention comprises an ice heat storage tank having heat insulation, a supply side main pipe and a return side main pipe installed above the opening of the ice heat storage tank and circulating antifreeze liquid to the ice heat storage tank, The interval between the pipe and the return side main pipe is set to be about 1/2 to slightly wider than the width of the side surface of the ice heat storage tank positioned perpendicular to the supply side main pipe and the return side main pipe. A supply main pipe and a return main pipe which are installed under the supply side main pipe and the return side main pipe and are formed to be shorter than an interval between the supply side main pipe and the return side main pipe; A large number of heat exchange pipes connected to both sides of the main pipe and the side of the return main pipe and connected to the vicinity of the bottom of the ice heat storage tank, and the supply side main pipe and the supply main pipe communicate with each other. Supply port And a return port connecting pipe for communicating the return side main pipe and the return main pipe. The supply main pipe, the return main pipe, and the heat exchange pipe connected therebetween are integrated. As the heat exchange pipe mat, in the heat exchange pipe mat, the longitudinal direction of the main pipe for supply and the main pipe for return is parallel, and both ends in the longitudinal direction of the main pipe for supply and the main pipe for return are Substantially aligned in a direction perpendicular to the longitudinal direction and set to a width narrower than about ½ of the width of the side surface of the ice heat storage tank positioned perpendicular to the supply-side main pipe and the return-side main pipe, located substantially perpendicular to the supply-side main pipe and the return-side main pipe, the heat exchange pipe mat was possible out from between the back side main pipe and the supply-side main pipe ice It is the thermal equipment.

さらに、前記供給側主配管と前記戻り側主配管の側面には、複数のコネクタが設けられ、前記供給側主配管のコネクタには前記供給口連結管が接続され、前記戻り側主配管のコネクタには前記戻り口連結管が接続され、各連結管は各コネクタに着脱自在に接続されているものである。   Further, a plurality of connectors are provided on side surfaces of the supply side main pipe and the return side main pipe, the supply port connecting pipe is connected to the connector of the supply side main pipe, and the connector of the return side main pipe Is connected to the return port connecting pipe, and each connecting pipe is detachably connected to each connector.

前記熱交換パイプマットは、前記供給側主配管と戻り側主配管に沿って２列に複数設置されている。そして、前記供給口連結管は、前記供給側主配管から一対が互いに反対方向に突出して設けられ、２列に設置された前記熱交換パイプマットの前記各供給用メインパイプに各々連結され、前記戻り口連結管は、前記戻り側主配管から一対が互いに反対方向に突出して設けられ、２列に設置された前記熱交換パイプマットの前記各戻り用メインパイプに各々連結されているものである。 The heat exchange pipe mat is several Installation in two rows along the back side main pipe and the supply-side main pipe. The supply port connecting pipes are provided so that a pair protrudes in opposite directions from the supply side main pipe, and are connected to the supply main pipes of the heat exchange pipe mats installed in two rows, A pair of return port connecting pipes are provided so as to protrude in opposite directions from the return side main pipe, and are respectively connected to the return main pipes of the heat exchange pipe mats installed in two rows. .

本発明の氷蓄熱装置は、熱交換パイプマットの着脱が、供給側主配管や戻り側主配管主配管等を移動することなく、熱交換パイプマット毎又はそれを複数組み合わせたモジュール毎に可能であり、メンテナンスが容易である。そして供給用メインパイプと戻り用メインパイプの長さが短く形成されているため、不凍液の流通が各熱交換パイプ毎に均一で熱交換効率が良好である。さらに請求項２の構造によれば、熱交換パイプマットの交換作業がより容易となる。   In the ice heat storage device of the present invention, the heat exchange pipe mat can be attached / detached for each heat exchange pipe mat or each module in which a plurality of them are combined without moving the supply side main pipe or the return side main pipe main pipe. Yes, maintenance is easy. And since the length of the main pipe for supply and the main pipe for return is formed short, the circulation of the antifreeze liquid is uniform for each heat exchange pipe and the heat exchange efficiency is good. Furthermore, according to the structure of Claim 2, the exchange operation | work of a heat exchange pipe mat becomes easier.

またこの発明の請求項３によれば、熱交換パイプマットを２列に配置して、多数の熱交換パイプを効率良く設けることができ、熱交換パイプマットの交換作業が容易なものとなる。さらに、請求項４の構造によれば、供給口連結管と戻り口連結管は、供給側主配管または戻り側主配管の両側に一対ずつ複数個が設けられているため、２列の熱交換パイプマットに均等に不凍液を流すことができる。   According to claim 3 of the present invention, the heat exchange pipe mats are arranged in two rows so that a large number of heat exchange pipes can be provided efficiently, and the heat exchange pipe mat can be easily replaced. Furthermore, according to the structure of claim 4, since a plurality of pairs of the supply port connecting pipe and the return port connecting pipe are provided on both sides of the supply side main pipe or the return side main pipe, two rows of heat exchanges are provided. Antifreeze can be poured evenly over the pipe mat.

以下、この発明の実施形態について図面に基づいて説明する。図１〜図３はこの発明の一実施形態を示すもので、この実施形態の氷蓄熱装置１０は、四角筒状に形成され上方に開口した氷蓄熱タンク１２が設けられている。氷蓄熱タンク１２は、断熱性を有する構造である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention, and an ice heat storage device 10 of this embodiment is provided with an ice heat storage tank 12 that is formed in a square tube shape and opens upward. The ice heat storage tank 12 has a heat insulating structure.

氷蓄熱タンク１２の一つの側面１２ａには、直角に隣接する他の側面１２ｂとの角部近傍で氷蓄熱タンク１２の上方開口部付近に、供給側主配管１４が挿通されて設けられている。供給側主配管１４は、側面１２ａに対してほぼ直角に挿通され、氷蓄熱タンク１２の中で側面１２ｂに対してほぼ平行に位置している。そして供給側主配管１４の先端は、側面１２ｂと直角に位置する側面１２ｃの内側近傍に達し、閉鎖されている。また、氷蓄熱タンク１２の側面１２ｃには、直角に隣接する側面１２ｄとの角部近傍で、供給側主配管１４とほぼ同じ高さに、戻り側主配管１６が挿通されて設けられている。戻り側主配管１６は、側面１２ｃに対してほぼ直角に挿通され、氷蓄熱タンク１２の中で側面１２ｄに対してほぼ平行に位置している。そして戻り側主配管１６の先端は、側面１２ａの内側近傍に達し、閉鎖されている。供給側主配管１４と戻り側主配管１６は、氷蓄熱タンク１２の上方に位置し、氷蓄熱タンク１２内面に設けられた図示しない固定部材に支持されている。供給側主配管１４と戻り側主配管１６の間隔は、氷蓄熱タンク１２の側面１２ｃの幅の約１／２程度か僅かに広い幅に設定されている。   On one side surface 12a of the ice heat storage tank 12, a supply side main pipe 14 is inserted in the vicinity of the upper opening portion of the ice heat storage tank 12 in the vicinity of the corner with the other side surface 12b adjacent at right angles. . The supply-side main pipe 14 is inserted at a substantially right angle with respect to the side surface 12 a and is positioned substantially parallel to the side surface 12 b in the ice heat storage tank 12. And the front-end | tip of the supply side main piping 14 reaches the inner side vicinity of the side surface 12c located at right angles to the side surface 12b, and is closed. Further, a return side main pipe 16 is inserted into the side face 12c of the ice heat storage tank 12 at a height substantially the same as the supply side main pipe 14 in the vicinity of the corner with the side face 12d adjacent at right angles. . The return-side main pipe 16 is inserted at a substantially right angle with respect to the side surface 12 c and is positioned substantially parallel to the side surface 12 d in the ice heat storage tank 12. And the front-end | tip of the return side main piping 16 reaches the inner side vicinity of the side surface 12a, and is closed. The supply side main pipe 14 and the return side main pipe 16 are positioned above the ice heat storage tank 12 and supported by a fixing member (not shown) provided on the inner surface of the ice heat storage tank 12. The interval between the supply-side main pipe 14 and the return-side main pipe 16 is set to be about ½ or slightly wider than the width of the side surface 12 c of the ice heat storage tank 12.

供給側主配管１４には、側面１２ｂに面している部分に、供給側主配管１４の内外を連通させるコネクタ２０が設けられている。コネクタ２０は、供給側主配管１４の長手方向に沿って等間隔に複数個が取り付けられ、後述する供給用メインパイプ３６に接続される供給口連結管２２が着脱自在に連結されている。また、供給側主配管１４のコネクタ２０と反対側の部分にも、供給側主配管１４の内外を連通させるコネクタ２４が設けられている。コネクタ２４は、コネクタ２０と同数が同じ間隔で、供給側主配管１４の長手方向に沿って取り付けられ、後述する供給用メインパイプ４２に接続される供給口連結管２６が着脱自在に連結されている。   The supply-side main pipe 14 is provided with a connector 20 that communicates the inside and outside of the supply-side main pipe 14 at the portion facing the side surface 12b. A plurality of connectors 20 are attached at equal intervals along the longitudinal direction of the supply-side main pipe 14, and a supply port connection pipe 22 connected to a supply main pipe 36 described later is detachably connected. In addition, a connector 24 that communicates the inside and outside of the supply-side main pipe 14 is also provided at a portion of the supply-side main pipe 14 opposite to the connector 20. The connector 24 is attached along the longitudinal direction of the supply-side main pipe 14 with the same number as the connector 20 at the same interval, and a supply port connection pipe 26 connected to a supply main pipe 42 described later is detachably connected. Yes.

戻り側主配管１６には、側面１２ｄに面している部分に、戻り側主配管１６の内外を連通するコネクタ２８が設けられている。コネクタ２８は、供給側主配管１４のコネクタ２０と同数が同間隔で、戻り側主配管１６の長手方向に沿って取り付けられている。そして、コネクタ２８には、後述する戻り用メインパイプ４４に接続される戻り口連結管３０が着脱自在に連結されている。また、戻り側主配管１６のコネクタ２８と反対側の部分にも、戻り側主配管１６の内外を連通するコネクタ３２が設けられている。コネクタ３２は、コネクタ２８と同数が同じ間隔で、戻り側主配管１６の長手方向に沿って取り付けられ、後述する戻り用メインパイプ３８に接続される戻り口連結管３４が着脱自在に連結されている。   The return side main pipe 16 is provided with a connector 28 that communicates the inside and outside of the return side main pipe 16 at a portion facing the side surface 12d. The same number of connectors 28 as the connectors 20 of the supply side main pipe 14 are attached at the same interval along the longitudinal direction of the return side main pipe 16. A return port connecting pipe 30 connected to a return main pipe 44, which will be described later, is detachably connected to the connector 28. A connector 32 that communicates the inside and outside of the return side main pipe 16 is also provided on the part of the return side main pipe 16 opposite to the connector 28. The connector 32 is attached along the longitudinal direction of the return side main pipe 16 with the same number as the connector 28 and the same interval, and a return port connecting pipe 34 connected to a return main pipe 38 to be described later is detachably connected. Yes.

氷蓄熱タンク１２には、供給側主配管１４と戻り側主配管１６の中間に仮想の境界線を設けて２等分した区分のうち、供給側主配管１４の下に位置する部分に、供給用メインパイプ３６と戻り用メインパイプ３８が、互いに平行に交互に並べられて設けられている。供給用メインパイプ３６と戻り用メインパイプ３８は、供給側主配管１４に対してほぼ直角に設置され、氷蓄熱タンク１２の側面１２ａの幅の約１／２より僅かに短い程度で、且つ供給側主配管１４と戻り側主配管１６の間隔よりも短いものである。これにより、供給側主配管１４と戻り側主配管１６の間から容易に出し入れが可能となっている。   The ice storage tank 12 is provided with a virtual boundary line between the supply-side main pipe 14 and the return-side main pipe 16 so as to be divided into two equal parts. Main pipes 36 for return and main pipes 38 for return are arranged alternately in parallel with each other. The supply main pipe 36 and the return main pipe 38 are installed substantially at right angles to the supply-side main pipe 14, and are slightly shorter than about ½ of the width of the side surface 12 a of the ice heat storage tank 12. The distance between the side main pipe 14 and the return side main pipe 16 is shorter. Thereby, it is possible to easily take in and out from between the supply side main pipe 14 and the return side main pipe 16.

また、供給用メインパイプ３６には、氷蓄熱タンク１２の側面１２ｂ側の端部が、上方に折り曲げられて供給口３７が設けられ、供給口３７に供給口連結管２２が着脱自在に接続され、供給側主配管１４に連通されている。供給用メインパイプ３６の、側面１２ｄ側の端部は閉鎖されている。一方、戻り用メインパイプ３８は、側面１２ｂ側の端部が閉鎖され、側面１２ｄ側の端部は、上方に折り曲げられて戻り口３９が設けられ、戻り口３９には、戻り口連結管３４が着脱自在に接続され、戻り側主配管１６に連通されている。   Further, the supply main pipe 36 is provided with a supply port 37 by bending the end of the ice heat storage tank 12 on the side surface 12b side upward, and the supply port connecting pipe 22 is detachably connected to the supply port 37. The supply-side main pipe 14 is communicated. The end of the supply main pipe 36 on the side surface 12d side is closed. On the other hand, the end portion on the side surface 12b side of the return main pipe 38 is closed, and the end portion on the side surface 12d side is bent upward to be provided with a return port 39. The return port 39 has a return port connecting pipe 34. Are detachably connected and communicated with the return-side main pipe 16.

供給用メインパイプ３６には、使用状態で下側に面する部分に、長手方向に沿って等間隔に、細い熱交換パイプ４０が、供給用メインパイプ３６に対してほぼ直角に下垂して設けられている。熱交換パイプ４０は、図２に示すように供給用メインパイプ３６近傍で交互に２方向に僅かに屈曲して下方に延び、氷蓄熱タンク１２の底部１２ｅ近傍で折り返され、隣接する戻り用メインパイプ３８の近傍で再び僅かに屈曲して、戻り用メインパイプ３８の下側に面する部分に接続されている。   The supply main pipe 36 is provided with a thin heat exchange pipe 40 that hangs at a substantially right angle with respect to the supply main pipe 36 at equal intervals along the longitudinal direction in a portion facing the lower side in use. It has been. As shown in FIG. 2, the heat exchange pipe 40 is bent slightly in two directions in the vicinity of the supply main pipe 36 and extends downward, folded back in the vicinity of the bottom 12 e of the ice heat storage tank 12, and adjacent to the return main pipe 40. The pipe 38 is slightly bent again in the vicinity of the pipe 38 and connected to a portion facing the lower side of the return main pipe 38.

熱交換パイプ４０の配列は、効率良い氷形成及び熱交換が可能なように、図４に示すような保持部材１８とスペーサ１９とにより、等間隔に設定されて位置決めされている。保持部材１８は、平板状の部材から成り、熱交換パイプ４０の一方の列を位置決めする溝５０と、この溝５０間に設けられた浅い保持凹部５４とが長手方向に沿って両側縁に設けられている。さらに、溝５０の底部にも、熱交換パイプ４０を保持する保持凹部５２が形成されている。そして、各保持凹部５２と、反対側の側縁の保持凹部５４が互いに対向するように、互いに１ピッチずれて配置されている。この保持部材１８により、２列の熱交換パイプ４０の配列が等間隔に保持され、効率良い氷形成及び熱交換が可能となる。   The arrangement of the heat exchange pipes 40 is set at equal intervals by holding members 18 and spacers 19 as shown in FIG. 4 so that efficient ice formation and heat exchange are possible. The holding member 18 is formed of a flat plate-like member, and grooves 50 for positioning one row of the heat exchange pipes 40 and shallow holding recesses 54 provided between the grooves 50 are provided on both side edges along the longitudinal direction. It has been. Furthermore, a holding recess 52 that holds the heat exchange pipe 40 is also formed at the bottom of the groove 50. And each holding | maintenance recessed part 52 and the holding | maintenance recessed part 54 of the opposite side edge are mutually arrange | positioned by 1 pitch so that it may mutually oppose. The holding member 18 holds the arrangement of the two rows of heat exchange pipes 40 at equal intervals, and enables efficient ice formation and heat exchange.

保持部材１８は、一対の供給用メインパイプ３６と戻り用メインパイプ３８に対応して設けられ、各々１本の熱交換パイプ４０の両端側が保持部材１８の両側縁に保持され、同じ一対の供給用メインパイプ３６と戻り用メインパイプ３８に接続された熱交換パイプ４０が同じ保持部材１８に保持されている。また、隣り合う熱交換パイプ４０同士の間隔は、図４に示すようなスペーサ１９により一定間隔に保持されている。スペーサ１９には、保持凹部５６が一側縁に形成され、熱交換パイプ４０の一方の列に保持され、互いに間隔を維持させる。   The holding member 18 is provided corresponding to the pair of main supply pipes 36 and the return main pipe 38, and both end sides of one heat exchange pipe 40 are held on both side edges of the holding member 18, respectively. The heat exchange pipe 40 connected to the main pipe 36 and the return main pipe 38 is held by the same holding member 18. Moreover, the space | interval of adjacent heat exchange pipes 40 is hold | maintained by the spacer 19 as shown in FIG. In the spacer 19, a holding recess 56 is formed on one side edge, and is held in one row of the heat exchange pipe 40 to maintain a distance from each other.

さらに、氷蓄熱タンク１２には、戻り側主配管１６の下に位置する部分にも、供給用メインパイプ４２と戻り用メインパイプ４４が、互いに平行に交互に並べられて設けられている。供給用メインパイプ４２と戻り用メインパイプ４４は、戻り側主配管１６に対してほぼ直角に設置され、氷蓄熱タンク１２の側面１２ａの幅の約１／２より僅かに短い程度で、且つ供給側主配管１４と戻り側主配管１６の間隔よりも短いものである。これにより、供給側主配管１４と戻り側主配管１６の間から出し入れが容易に可能となっている。   Further, the ice heat storage tank 12 is also provided with supply main pipes 42 and return main pipes 44 that are alternately arranged in parallel with each other at a portion below the return side main pipe 16. The supply main pipe 42 and the return main pipe 44 are installed substantially at right angles to the return side main pipe 16, and are slightly shorter than about ½ of the width of the side surface 12 a of the ice heat storage tank 12. The distance between the side main pipe 14 and the return side main pipe 16 is shorter. Accordingly, it is possible to easily take in and out between the supply side main pipe 14 and the return side main pipe 16.

また、供給用メインパイプ４２には、氷蓄熱タンク１２の側面１２ｂ側の端部が、上方に折り曲げられて供給口４３が設けられ、供給口４３に供給口連結管２６が着脱自在に接続され、供給側主配管１４に連通されている。供給用メインパイプ４２の、側面１２ｄ側の端部は閉鎖されている。一方、戻り用メインパイプ４４は、側面１２ｂ側の端部が閉鎖され、側面１２ｄ側の端部は、上方に折り曲げられて戻り口４５が設けられ、戻り口４５に戻り口連結管３０が着脱自在に接続され、戻り側主配管１６に連通されている。また、供給用メインパイプ４２と戻り用メインパイプ４４にも、供給用メインパイプ３６と戻り用メインパイプ３８と同様に、使用状態で下側に面する部分に、長手方向に沿って等間隔に、細い熱交換パイプ４０が、供給用メインパイプ４２に対してほぼ直角に下垂して設けられている。   Further, the supply main pipe 42 is provided with a supply port 43 by bending the end of the ice heat storage tank 12 on the side surface 12b side upward, and the supply port connection pipe 26 is detachably connected to the supply port 43. The supply-side main pipe 14 is communicated. The end of the supply main pipe 42 on the side surface 12d side is closed. On the other hand, the end portion on the side surface 12b side of the return main pipe 44 is closed, and the end portion on the side surface 12d side is bent upward to provide a return port 45, and the return port connecting pipe 30 is attached to and detached from the return port 45. It is freely connected and communicates with the return side main pipe 16. Similarly to the main supply pipe 36 and the main return pipe 38, the main supply pipe 42 and the return main pipe 44 are also equidistantly spaced along the longitudinal direction in the portion facing the lower side in use. A thin heat exchange pipe 40 is provided so as to hang substantially perpendicular to the supply main pipe 42.

ここで、供給用メインパイプ３６と戻り用メインパイプ３８、及びこれらに接続され保持部材１８により位置決めされた熱交換パイプ４０が、一つの扁平状の熱交換パイプマット４６を構成する。また、供給用メインパイプ４２と戻り用メインパイプ４４、及びこれらに接続された熱交換パイプ４０も、同じ大きさで同じ形状の熱交換パイプマット４６を構成する。熱交換パイプマット４６は、保持部材１８により少し厚みを有する板状となり、熱交換パイプマット４６毎に氷蓄熱タンク１２から取り外して交換や修理等のメンテナンスをすることができる。さらに、この熱交換パイプマット４６を複数連結して一つのモジュールとして、氷蓄熱タンク１２内に設置するようにしても良い。氷蓄熱タンク１２の内側には、熱交換パイプマット４６が仮想の中央境界線を挟む２列に所定間隔で配置されている。   Here, the supply main pipe 36, the return main pipe 38, and the heat exchange pipe 40 connected thereto and positioned by the holding member 18 constitute one flat heat exchange pipe mat 46. The supply main pipe 42, the return main pipe 44, and the heat exchange pipe 40 connected to them also constitute a heat exchange pipe mat 46 having the same size and shape. The heat exchange pipe mat 46 becomes a plate having a little thickness by the holding member 18, and the heat exchange pipe mat 46 can be removed from the ice heat storage tank 12 for maintenance such as replacement or repair. Further, a plurality of the heat exchange pipe mats 46 may be connected and installed in the ice heat storage tank 12 as one module. Inside the ice heat storage tank 12, heat exchange pipe mats 46 are arranged at predetermined intervals in two rows across a virtual central boundary line.

また、氷蓄熱タンク１２内には、供給用メインパイプ３６，４２、戻り用メインパイプ３８，４４の浮き上がりを防止し、位置を規制する支持部材５８が、２列の熱交換パイプマット４６に沿って２本ずつ平行に４本設けられている。さらに、熱交換パイプマット４６の氷蓄熱タンク１２内での動きを規制するために、側面１２ａ，１２ｃと平行に蓄熱タンク１２内に規制部材６０が取り付けられている。   Further, in the ice heat storage tank 12, support members 58 that prevent the supply main pipes 36, 42 and the return main pipes 38, 44 from being lifted and restrict their positions are provided along the two rows of heat exchange pipe mats 46. There are four in parallel. Furthermore, in order to regulate the movement of the heat exchange pipe mat 46 in the ice heat storage tank 12, a regulating member 60 is attached in the heat storage tank 12 in parallel with the side surfaces 12a and 12c.

次に、この実施形態の氷蓄熱装置１０の使用方法について説明する。供給側主配管１４は、図示しない配管を介して熱交換器の不凍液出口に接続される。戻り側主配管１６は、図示しない配管を介して熱交換器の不凍液入口に接続される。   Next, the usage method of the ice heat storage apparatus 10 of this embodiment is demonstrated. Supply side main piping 14 is connected to the antifreeze outlet of a heat exchanger via piping which is not illustrated. The return side main pipe 16 is connected to an antifreeze liquid inlet of the heat exchanger via a pipe (not shown).

そして、氷蓄熱タンク１２に水を充填し、冷凍機等で−数℃程度に設定された不凍液を、供給側主配管１４、供給口連結管２２，２６、供給用メインパイプ３６，４２を通過して熱交換パイプ４０内に流す。熱交換パイプ４０に流れた不凍液は、戻り用メインパイプ３８，４４、戻り口連結管３０，３４、戻り側主配管１６を通過して、熱交換器の不凍液入口へ戻り、再度所定温度に冷却される。このように不凍液を循環させることにより、氷蓄熱タンク１２内の水が凍結する。   Then, the ice heat storage tank 12 is filled with water, and the antifreeze liquid set to about −several degrees C with a refrigerator or the like passes through the supply side main pipe 14, the supply port connection pipes 22 and 26, and the supply main pipes 36 and 42. Then, it flows in the heat exchange pipe 40. The antifreeze flowing into the heat exchange pipe 40 passes through the return main pipes 38 and 44, the return port connecting pipes 30 and 34, and the return side main pipe 16, returns to the antifreeze liquid inlet of the heat exchanger, and is cooled again to a predetermined temperature. Is done. By circulating the antifreeze liquid in this way, the water in the ice heat storage tank 12 is frozen.

また、この氷蓄熱タンク１２内の氷を冷熱源として利用する場合は、同様に不凍液を循環させて図示しない熱交換により不凍液に熱を吸収させ、熱交換パイプを循環させ氷蓄熱タンク１２内の氷により不凍液を冷却し、再び熱交換器へ送る。   When the ice in the ice heat storage tank 12 is used as a cold heat source, the antifreeze liquid is circulated in the same manner, heat is absorbed by the antifreeze liquid by heat exchange (not shown), and the heat exchange pipe is circulated to circulate in the ice heat storage tank 12. Cool the antifreeze with ice and send it again to the heat exchanger.

次に、供給側主配管１４の下方に位置する熱交換パイプマット４６又はそのモジュールを、メンテナンス等で交換するときは、交換する供給用メインパイプ３６の供給口連結管２２と、戻り用メインパイプ３８の戻り口連結管３４とを、それぞれコネクタ２０，３２で外し、供給側主配管１４と戻り側主配管１６から分離する。そしてモジュール又は熱交換パイプマット４６を、供給側主配管１４と戻り側主配管１６の間に移動させて引き上げ、氷蓄熱タンク１２から取り出す。次に新しいモジュール又は熱交換パイプマット４６を、供給側主配管１４と戻り側主配管１６の間から氷蓄熱タンク１２の中に入れ、供給側配管１４の下方の所定位置に移動させ、供給用メインパイプ３６の供給口連結管２２と、戻り用メインパイプ３８の戻り口連結管３４を、それぞれコネクタ２０，３２で連結する。これにより供給側主配管１４と戻り側主配管１６と連通し、不凍液が循環する。なお、この交換は、供給口３７と戻り口３９でメインパイプ３６，３８を外して行っても良い。   Next, when exchanging the heat exchange pipe mat 46 or its module positioned below the supply side main pipe 14 for maintenance or the like, the supply port connecting pipe 22 of the supply main pipe 36 to be replaced and the return main pipe are replaced. The 38 return port connecting pipes 34 are disconnected by connectors 20 and 32, respectively, and separated from the supply side main pipe 14 and the return side main pipe 16. Then, the module or the heat exchange pipe mat 46 is moved between the supply side main pipe 14 and the return side main pipe 16 to be pulled up and taken out from the ice heat storage tank 12. Next, a new module or heat exchange pipe mat 46 is put into the ice heat storage tank 12 from between the supply side main pipe 14 and the return side main pipe 16 and moved to a predetermined position below the supply side pipe 14 for supply. The supply port connecting pipe 22 of the main pipe 36 and the return port connecting pipe 34 of the return main pipe 38 are connected by connectors 20 and 32, respectively. As a result, the antifreeze circulates in communication with the supply side main pipe 14 and the return side main pipe 16. This replacement may be performed by removing the main pipes 36 and 38 at the supply port 37 and the return port 39.

これと同様に、戻り側主配管１６の下方に位置するモジュール又は熱交換パイプマット４６を交換するときは、交換する供給用メインパイプ４２の供給口連結管２６と、戻り用メインパイプ４４の戻り口連結管３０とを、それぞれコネクタ２４，２８で外し、供給側主配管１４と戻り側主配管１６から分離する。そしてモジュール又は熱交換パイプマット４６を、供給側主配管１４と戻り側主配管１６の間に移動させて引き上げ、氷蓄熱タンク１２から取り出す。次に新しいモジュール又は熱交換パイプマット４６を、供給側主配管１４と戻り側主配管１６の間から氷蓄熱タンク１２の中に入れ、戻り側主配管１６の下方の所定位置に移動させ、供給用メインパイプ４２の供給口連結管２６と、また戻り用メインパイプ４４の戻り口連結管３０を、それぞれコネクタ２４，２８で連結する。これにより供給側主配管１４と戻り側主配管１６と連続し、不凍液が循環する。この交換も、供給口４３と戻り口４５でメインパイプ４２，４４を外して行っても良い。   Similarly, when the module or the heat exchange pipe mat 46 located below the return side main pipe 16 is replaced, the supply port connecting pipe 26 of the supply main pipe 42 to be replaced and the return main pipe 44 are returned. The port connection pipe 30 is removed by connectors 24 and 28, respectively, and separated from the supply side main pipe 14 and the return side main pipe 16. Then, the module or the heat exchange pipe mat 46 is moved between the supply side main pipe 14 and the return side main pipe 16 to be pulled up and taken out from the ice heat storage tank 12. Next, a new module or heat exchange pipe mat 46 is put into the ice heat storage tank 12 from between the supply side main pipe 14 and the return side main pipe 16, moved to a predetermined position below the return side main pipe 16, and supplied. The supply port connecting pipe 26 of the main pipe 42 and the return port connecting pipe 30 of the return main pipe 44 are connected by connectors 24 and 28, respectively. As a result, the supply side main pipe 14 and the return side main pipe 16 are continuous, and the antifreeze liquid circulates. This replacement may also be performed by removing the main pipes 42 and 44 at the supply port 43 and the return port 45.

この実施形態の氷蓄熱装置１０によれば、供給用メインパイプ３６，４２と熱交換パイプ４０、戻り用メインパイプ３８，４４が、一体に形成されて熱交換パイプマット４６となり、このモジュール単位で交換が可能であり、メンテナンスが容易である。また組み立てるときも、この熱交換パイプマット４６又はモジュール毎に氷蓄熱タンク１２に入れることができ、組立工程も容易となる。供給用メインパイプ３６，４２、戻り用メインパイプ３８，４４による熱交換パイプマット４６は、供給側主配管１４と戻り側主配管１６の間を通過する長さであるため、供給側主配管１４または戻り側主配管１６を氷蓄熱タンク１２から外す必要がなく、また周囲の熱交換パイプマット４６が組立状態のまま目的のモジュールまたは熱交換パイプマット４６のみを取り外しすることが可能であり、メンテナンスが簡単である。また、供給用メインパイプ３６，４２は、氷蓄熱タンク１２の設置する方向の約半分の長さに形成され、例えば長い一本の供給用メインパイプに不凍液を通過させるよりも、不凍液の流れが均一で熱交換効率が良い。さらに、熱交換パイプ４０に均一に不凍液を流すためには、太い供給用メインパイプが必要であるが、この実施形態のメインパイプは相対的に短いことから、径が細い供給用メインパイプ３６でも対応することができ、コストが安価で、小型化が可能で熱交換パイプ４０を密集して設けることができる。   According to the ice heat storage device 10 of this embodiment, the supply main pipes 36, 42, the heat exchange pipe 40, and the return main pipes 38, 44 are integrally formed to form the heat exchange pipe mat 46. Replacement is possible and maintenance is easy. Further, when assembling, the heat exchange pipe mat 46 or each module can be put into the ice heat storage tank 12 and the assembling process becomes easy. The heat exchange pipe mat 46 formed by the supply main pipes 36 and 42 and the return main pipes 38 and 44 has a length that passes between the supply side main pipe 14 and the return side main pipe 16. Alternatively, it is not necessary to remove the return side main pipe 16 from the ice heat storage tank 12, and it is possible to remove only the target module or the heat exchange pipe mat 46 while the surrounding heat exchange pipe mat 46 is in an assembled state, and maintenance is possible. Is simple. Moreover, the supply main pipes 36 and 42 are formed to be approximately half the length in the direction in which the ice heat storage tank 12 is installed. For example, the flow of the antifreeze liquid is more than the flow of the antifreeze liquid through one long supply main pipe. Uniform and good heat exchange efficiency. Further, in order to allow the antifreeze liquid to flow uniformly through the heat exchange pipe 40, a thick supply main pipe is required. However, since the main pipe of this embodiment is relatively short, the supply main pipe 36 having a small diameter is also used. Therefore, the heat exchange pipes 40 can be densely provided.

なお、この発明の氷蓄熱装置は、上記実施形態に限定されるものではなく、熱交換パイプマットやモジュールの大きさ、数は変更可能であり、３列以上に設置することも可能である。各パイプの径や連結方法、設置する向き等は、自由に変更可能である。また、氷蓄熱タンクには、蓋部材を着脱可能に取り付けることができる。   In addition, the ice heat storage device of this invention is not limited to the said embodiment, The magnitude | size and number of a heat exchange pipe mat or a module can be changed, and it is also possible to install in 3 or more rows. The diameter, connection method, installation direction, etc. of each pipe can be freely changed. Moreover, a lid member can be detachably attached to the ice heat storage tank.

この発明の一実施形態の氷蓄熱装置の平面図である。It is a top view of the ice heat storage apparatus of one Embodiment of this invention. この実施形態の氷蓄熱装置の縦断面図である。It is a longitudinal cross-sectional view of the ice thermal storage apparatus of this embodiment. この実施形態の氷蓄熱装置の図２を右側面から見た縦断面図である。It is the longitudinal cross-sectional view which looked at FIG. 2 of the ice thermal storage apparatus of this embodiment from the right side surface. この実施形態の氷蓄熱装置の熱交換パイプを保持した保持部材を示す平面図である。It is a top view which shows the holding member holding the heat exchange pipe of the ice heat storage apparatus of this embodiment.

１０ 氷蓄熱装置
１２ 氷蓄熱タンク
１４ 供給側主配管
１６ 戻り側主配管
２０，２４，２８，３２ コネクタ
２２，２６ 供給口連結管
３０，３４ 戻り口連結管
３６，４２ 供給用メインパイプ
３７，４３ 供給口
３８，４４ 戻り用メインパイプ
３９，４５ 戻り口
４０ 熱交換パイプ
４６ 熱交換パイプマット DESCRIPTION OF SYMBOLS 10 Ice thermal storage apparatus 12 Ice thermal storage tank 14 Supply side main piping 16 Return side main piping 20, 24, 28, 32 Connector 22, 26 Supply port connection pipes 30, 34 Return port connection pipes 36, 42 Supply main pipes 37, 43 Supply port 38, 44 Return main pipe 39, 45 Return port 40 Heat exchange pipe 46 Heat exchange pipe mat

Claims (4)

断熱性を有する氷蓄熱タンクと、
前記氷蓄熱タンクの開口部上方に設置され前記氷蓄熱タンクに不凍液を循環させる供給側主配管と戻り側主配管とを備え、
前記供給側主配管と前記戻り側主配管の間隔は、前記供給側主配管及び前記戻り側主配管に対して垂直に位置した前記氷蓄熱タンクの側面の幅の約１／２乃至僅かに広い幅に設定され、
前記供給側主配管と前記戻り側主配管の下に設置され前記供給側主配管と前記戻り側主配管の間隔よりも短く形成された供給用メインパイプと戻り用メインパイプと、
前記供給用メインパイプと前記戻り用メインパイプの側面に両端が各々接続され前記氷蓄熱タンクの底部近傍まで達して折り返された多数の熱交換パイプと、
前記供給側主配管と前記供給用メインパイプを連通させる供給口連結管と、
前記戻り側主配管と前記戻り用メインパイプを連通させる戻り口連結管とが設けられ、
前記供給用メインパイプと前記戻り用メインパイプ及びその間に接続された前記熱交換パイプを一体の熱交換パイプマットとして、
前記熱交換パイプマットは、前記供給用メインパイプと前記戻り用メインパイプの長手方向が平行であり、前記供給用メインパイプと前記戻り用メインパイプの長手方向の両端が長手方向に垂直な方向でほぼそろえられ、前記供給側主配管及び前記戻り側主配管に対して垂直に位置した前記氷蓄熱タンクの側面の幅の約１／２より狭い幅に設定され、前記供給側主配管と前記戻り側主配管に対してほぼ垂直に位置し、
この熱交換パイプマットを前記供給側主配管と前記戻り側主配管の間から出し入れ可能としたことを特徴とする氷蓄熱装置。 An ice heat storage tank having heat insulation properties;
A supply-side main pipe and a return-side main pipe that are installed above the opening of the ice heat storage tank and circulate antifreeze into the ice heat storage tank;
The interval between the supply-side main pipe and the return-side main pipe is about ½ to slightly wider than the width of the side surface of the ice heat storage tank positioned perpendicular to the supply-side main pipe and the return-side main pipe. Set to width,
A main pipe for supply and a main pipe for return that are installed below the supply-side main pipe and the return-side main pipe and are formed shorter than the interval between the supply-side main pipe and the return-side main pipe;
A large number of heat exchange pipes that are connected to the side surfaces of the supply main pipe and the return main pipe, and are folded back to reach the vicinity of the bottom of the ice heat storage tank,
A supply port connecting pipe for communicating the supply side main pipe and the supply main pipe;
A return port connecting pipe for communicating the return side main pipe and the return main pipe;
The supply main pipe and the return main pipe and the heat exchange pipe connected therebetween as an integral heat exchange pipe mat,
In the heat exchange pipe mat, the longitudinal direction of the main pipe for supply and the main pipe for return is parallel, and both longitudinal ends of the main pipe for supply and the main pipe for return are perpendicular to the longitudinal direction. The supply side main pipe and the return side main pipe and the return side main pipe are set to a width that is narrower than about ½ of the width of the side surface of the ice heat storage tank that is substantially aligned with the supply side main pipe and the return side main pipe. Located almost perpendicular to the side main piping,
An ice heat storage device characterized in that the heat exchange pipe mat can be taken in and out between the supply side main pipe and the return side main pipe. 前記供給側主配管と前記戻り側主配管の側面には、複数のコネクタが設けられ、前記供給側主配管のコネクタには前記供給口連結管が接続され、前記戻り側主配管のコネクタには前記戻り口連結管が接続され、各連結管は各コネクタに着脱自在に接続されていることを特徴とする請求項１記載の氷蓄熱装置。   A plurality of connectors are provided on the side surfaces of the supply side main pipe and the return side main pipe, the supply port connecting pipe is connected to the connector of the supply side main pipe, and the connector of the return side main pipe is connected to the connector of the return side main pipe 2. The ice heat storage device according to claim 1, wherein the return port connecting pipe is connected, and each connecting pipe is detachably connected to each connector. 前記熱交換パイプマットは、前記供給側主配管と戻り側主配管に沿って２列に複数設置されていることを特徴とする請求項１または２記載の氷蓄熱装置。 The heat exchange pipe mat, the supply-side main pipe and return two rows along the side main pipe ice thermal storage device according to claim 1 or 2, characterized in that it is more than Installation on. 前記供給口連結管は、前記供給側主配管から一対が互いに反対方向に突出して設けられ、２列に設置された前記熱交換パイプマットの前記各供給用メインパイプに各々連結され、前記戻り口連結管は、前記戻り側主配管から一対が互いに反対方向に突出して設けられ、２列に設置された前記熱交換パイプマットの前記各戻り用メインパイプに各々連結されていることを特徴とする請求項３記載の氷蓄熱装置。
The supply port connecting pipes are provided so that a pair protrudes in opposite directions from the supply side main pipe, and are connected to the supply main pipes of the heat exchange pipe mats installed in two rows, respectively, and the return port A pair of connecting pipes are provided so as to protrude in opposite directions from the return-side main pipe, and are connected to the return main pipes of the heat exchange pipe mats installed in two rows, respectively. The ice heat storage device according to claim 3.
JP2005067712A 2005-03-10 2005-03-10 Ice heat storage device Expired - Fee Related JP4714935B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
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JPH0642887A (en) * 1992-02-20 1994-02-18 Ishigaki Mech Ind Co Heat accumulator
JPH06241680A (en) * 1993-02-22 1994-09-02 Mitsubishi Electric Corp Heat exchanger device for heat accumulation in heat accumulation type air conditioner
JPH08152285A (en) * 1994-11-29 1996-06-11 Matsushita Electric Works Ltd Cool storage tank
JPH11257808A (en) * 1997-10-31 1999-09-24 Delroc Sa Refrigerating device having ice storage container
JP2000097455A (en) * 1998-09-25 2000-04-04 Nippon Spindle Mfg Co Ltd Cooling capacity controller in ice heat storage device
JP2001021183A (en) * 1999-07-09 2001-01-26 Daikin Ind Ltd Ice thermal storage system
JP2003004263A (en) * 2001-06-26 2003-01-08 Ebara Corp Internally melting ice-thermal-storage apparatus and operation thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0642887A (en) * 1992-02-20 1994-02-18 Ishigaki Mech Ind Co Heat accumulator
JPH06241680A (en) * 1993-02-22 1994-09-02 Mitsubishi Electric Corp Heat exchanger device for heat accumulation in heat accumulation type air conditioner
JPH08152285A (en) * 1994-11-29 1996-06-11 Matsushita Electric Works Ltd Cool storage tank
JPH11257808A (en) * 1997-10-31 1999-09-24 Delroc Sa Refrigerating device having ice storage container
JP2000097455A (en) * 1998-09-25 2000-04-04 Nippon Spindle Mfg Co Ltd Cooling capacity controller in ice heat storage device
JP2001021183A (en) * 1999-07-09 2001-01-26 Daikin Ind Ltd Ice thermal storage system
JP2003004263A (en) * 2001-06-26 2003-01-08 Ebara Corp Internally melting ice-thermal-storage apparatus and operation thereof

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