JP3050114B2 - Control method of ice storage type chiller - Google Patents
Control method of ice storage type chillerInfo
- Publication number
- JP3050114B2 JP3050114B2 JP7345140A JP34514095A JP3050114B2 JP 3050114 B2 JP3050114 B2 JP 3050114B2 JP 7345140 A JP7345140 A JP 7345140A JP 34514095 A JP34514095 A JP 34514095A JP 3050114 B2 JP3050114 B2 JP 3050114B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- ice storage
- temperature
- heat exchanger
- storage tank
- 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
Links
Landscapes
- Other Air-Conditioning Systems (AREA)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、過冷却水に属す
る技術分野で、詳しくは蓄氷型冷水装置の制御方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of supercooled water, and more particularly to a method for controlling an ice storage type chilled water device.
【０００２】[0002]
【従来の技術】従来、空調設備や食品冷却装置等に冷水
を供給する蓄氷型冷水装置がある。この蓄氷型冷水装置
は、図３に示すように、蓄氷タンク３１と過冷却水用熱
交換器３２（以下「熱交換器３２」と云う）との間を循
環路３３で連通するとともに、前記熱交換器３２と冷凍
機３４との間を冷媒循環路３５で連通した構成となって
いる。この蓄氷型冷水装置は、電力料金の安い深夜電力
を利用して蓄氷タンク３１内に氷を蓄えておき、食品冷
却装置等の操業時における負荷の要求に応じ、蓄氷タン
ク３１の上方から解氷水を供給するとともに、その下部
から冷水を取り出すようにしている。2. Description of the Related Art Conventionally, there is an ice storage type chiller for supplying chilled water to an air conditioner or a food cooling device. As shown in FIG. 3, the ice storage type chilled water device communicates between an ice storage tank 31 and a heat exchanger 32 for supercooled water (hereinafter, referred to as a “heat exchanger 32”) by a circulation path 33. The heat exchanger 32 and the refrigerator 34 are connected by a refrigerant circulation path 35. The ice storage type chilled water device stores ice in the ice storage tank 31 by using late-night electric power at a low electricity rate, and responds to a load demand during operation of the food cooling device or the like, so that the ice is stored above the ice storage tank 31. In addition to supplying the deicing water from, the cold water is taken out from the lower part.
【０００３】ところで、前記蓄氷タンク３１内に所定量
の氷を蓄氷後、負荷の要求に応じ冷水の取出しが始まる
と、前記蓄氷型冷水装置が起動する。しかしながら、負
荷側の要求する冷水量が少量の場合は、前記蓄氷タンク
３１内の水位はあまり低下せず、前記熱交換器３２の出
口から流入する過冷却水は、蓄氷面に当って過冷却が解
除され、氷の一部は氷筍となって隆起し、前記熱交換器
３２の出口に到達して凍結することがある。また、負荷
側の要求する冷水量が多い場合は、前記蓄氷タンク３１
内の水位は徐々に低下し、下限水位になると負荷側への
冷水の供給は停止される。When a predetermined amount of ice is stored in the ice storage tank 31 and cold water is taken out in response to a load request, the ice storage type chiller is started. However, when the amount of cold water required on the load side is small, the water level in the ice storage tank 31 does not drop so much, and the supercooled water flowing from the outlet of the heat exchanger 32 hits the ice storage surface. The supercooling is released, and a part of the ice rises as ice bamboo shoots and reaches the outlet of the heat exchanger 32 to freeze. If the load requires a large amount of cold water, the ice storage tank 31
The water level in the inside gradually decreases, and when the water level reaches the lower limit, the supply of cold water to the load side is stopped.
【０００４】[0004]
【発明が解決しようとする課題】上述のように、蓄氷型
冷水装置の冷水取出し運転中における制御は、前記熱交
換器を凍結させることなく効率的に冷水の供給と製氷を
行なうことである。そこで、この発明は、冷水取出し運
転中における効率的な蓄氷型冷水装置の制御方法を提供
することを目的とするものである。As described above, the control during the operation of taking out the chilled water of the ice storage type chilled water device is to efficiently supply the chilled water and make ice without freezing the heat exchanger. . Accordingly, an object of the present invention is to provide a method for efficiently controlling an ice storage type chilled water device during a chilled water removal operation.
【０００５】[0005]
【課題を解決するための手段】この発明は、上記課題を
解決するためになされたものであって、請求項１に記載
の発明は、冷凍機，過冷却水用熱交換器および蓄氷タン
クにより構成された蓄氷型冷水装置における制御方法で
あって、前記蓄氷タンクから冷水取出し運転中、前記蓄
氷タンク内の水位が所定水位よりも高いときは、被冷却
水の温度を前記過冷却水用熱交換器の出口で過冷却にな
らない温度に制御し、また所定水位よりも低いときは、
被冷却水の温度を前記過冷却水用熱交換器の出口で過冷
却になる温度に制御することを特徴としている。Means for Solving the Problems The present invention has been made to solve the above problems, and is described in claim 1 .
The present invention is a control method in an ice storage type chilled water device constituted by a refrigerator, a heat exchanger for supercooled water and an ice storage tank , wherein during the operation of taking out cold water from the ice storage tank, the control method in the ice storage tank is performed. When the water level is higher than the predetermined water level, the temperature of the water to be cooled is controlled to a temperature that does not cause supercooling at the outlet of the supercooled water heat exchanger, and when the water level is lower than the predetermined water level,
It is characterized in that the temperature of the water to be cooled is controlled to a temperature at which supercooling occurs at the outlet of the heat exchanger for supercooling water.
【０００６】[0006]
【発明の実施の形態】つぎに、この発明の実施の形態に
ついて説明すると、この発明は、蓄氷型冷水装置の制御
方法に係るもので、特に蓄氷タンクから冷水取出し運転
中における前記蓄氷タンク内の水位と負荷側の要求する
冷水量に対応した蓄氷型冷水装置の制御方法で、前記蓄
氷型冷水装置を効率的に運転するものである。この発明
は、前記蓄氷タンクから冷水取出し運転中における前記
蓄氷タンク内の水位の高低と、冷水取出し量の多少によ
って、過冷却水用熱交換器（以下、「熱交換器」と云
う）へ供給する被冷却水の温度を制御することにより実
現されている。前記蓄氷タンク内の水位は、負荷側の要
求する冷水要求量と、蓄氷された氷を解氷するために供
給する解氷水の水量によって上下する。したがって、負
荷側の要求する冷水量が少量の場合は、前記蓄氷タンク
内の水位はあまり低下せず、高水位にあるため、前記熱
交換器から還流する過冷却水が蓄氷面に当って過冷却が
解除され氷筍となって隆起し、前記熱交換器の出口に到
達して凍結するが、この発明にあっては、前記蓄氷タン
ク内からの冷水取出し運転中における蓄氷型冷水装置の
制御方法により、前記熱交換器出口での凍結防止と、こ
の蓄氷型冷水装置の運転効率を向上させることにより実
現している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described. The present invention relates to a method for controlling an ice storage type chilled water device, and particularly to the ice storage during the operation of removing chilled water from an ice storage tank. A method of controlling an ice storage type chilled water device corresponding to a water level in a tank and a required amount of chilled water on a load side, thereby efficiently operating the ice storage type chilled water device. The present invention provides a supercooled water heat exchanger (hereinafter, referred to as a "heat exchanger") depending on the level of water in the ice storage tank and the amount of cold water taken out during the operation of taking out cold water from the ice storage tank. This is realized by controlling the temperature of the water to be cooled supplied to the cooling water. The water level in蓄氷the tank, up and down and cold water demand of the load requirements, by the amount of water subjected <br/> supply to de ice to thaw the蓄氷glacial. Therefore, when the amount of cold water required on the load side is small, the water level in the ice storage tank does not drop so much and is at a high water level, so that the supercooled water refluxed from the heat exchanger hits the ice storage surface. Then, the supercooling is released to form ice bamboo shoots, which rises, reaches the outlet of the heat exchanger, and freezes. However, in the present invention, the ice storage type during the operation of taking out cold water from the ice storage tank is used. This is realized by controlling the chilled water device by preventing freezing at the heat exchanger outlet and improving the operation efficiency of the ice storage chilled water device.
【０００７】前記蓄氷型冷水装置は、冷凍機，熱交換器
および蓄氷タンクにより構成されており、具体的には、
前記蓄氷タンクの下部と前記熱交換器の入口を冷水供給
路で接続し、この冷水供給路に温度センサと加熱手段を
設けるとともに、前記蓄氷タンク内に水位検出手段を設
け、さらにこの蓄氷タンクの下部に冷水取水路を接続
し、この冷水取水路に流量センサを設けている。そし
て、前記温度センサ，加熱手段，水位検出手段および流
量センサを制御器に接続した構成となっている。前記加
熱手段としては、前記冷水供給路に常温水供給路を接続
する構成，電熱ヒータを設ける構成，前記冷凍機の高温
冷媒を利用する構成等がある。また、水位検出手段は、
電極棒方式，フロート方式等がある。[0007] The ice storage type chiller is composed of a refrigerator, a heat exchanger and an ice storage tank.
The lower part of the ice storage tank and the inlet of the heat exchanger are connected by a cold water supply path, a temperature sensor and a heating means are provided in the cold water supply path, and a water level detecting means is provided in the ice storage tank. A cold water intake channel is connected to the lower part of the ice tank, and a flow sensor is provided in the cold water intake channel. The temperature sensor, the heating means, the water level detecting means and the flow rate sensor are connected to a controller. Examples of the heating unit include a configuration in which a normal temperature water supply path is connected to the cold water supply path, a configuration in which an electric heater is provided, and a configuration in which a high-temperature refrigerant of the refrigerator is used. In addition, the water level detection means,
There are an electrode rod type, a float type, and the like.
【０００８】前記蓄氷型冷水装置の制御方法は、前記蓄
氷タンクから冷水取出し運転中における前記蓄氷タンク
内の水位が所定水位よりも高いときは、前記制御器は、
被冷却水の温度を前記熱交換器の出口で過冷却にならな
い温度に制御する。また、所定水位よりも低いときは、
前記制御器は、被冷却水の温度を前記熱交換器の出口で
過冷却になる温度に制御し、過冷却水を前記蓄氷タンク
へ供給して製氷する。[0008] The control method of the ice storage type chilled water device is such that when the water level in the ice storage tank is higher than a predetermined water level during the operation of taking out the cold water from the ice storage tank, the controller comprises:
The temperature of the water to be cooled is controlled at the outlet of the heat exchanger so as not to be supercooled. When the water level is lower than the predetermined water level,
The controller controls the temperature of the water to be cooled to a temperature at which supercooling is performed at an outlet of the heat exchanger, and stores the supercooled water in the ice storage tank.
To make ice.
【０００９】前記熱交換器の入口と出口における被冷却
水の熱交換温度は、たとえば入口温度を０．８℃とすれ
ば、出口温度は−０．９℃の過冷却となり、また入口温
度を１．８℃とすれば、出口温度は０．１℃の冷水とな
る。すなわち、この熱交換器では、入口と出口における
被冷却水の熱交換による冷却温度は１．７℃となる。し
たがって、前記熱交換器出口で過冷却にならない出口温
度を０．１℃とし、過冷却水になる出口温度を−０．９
℃に制御することにより、負荷側の要求冷水量に対応す
るとともに、この蓄氷型冷水装置を効率的に運転するこ
とができる。As for the heat exchange temperature of the water to be cooled at the inlet and the outlet of the heat exchanger, for example, if the inlet temperature is 0.8 ° C. , the outlet temperature is -0.9 ° C. , and the outlet temperature is supercooled. If the temperature is 1.8 ° C. , the outlet temperature is 0.1 ° C. cold water. That is, in this heat exchanger, the cooling temperature due to the heat exchange of the water to be cooled at the inlet and the outlet is 1.7 ° C. Therefore, the outlet temperature at which no supercooling occurs at the heat exchanger outlet is set to 0.1 ° C., and the outlet temperature at which the supercooled water is turned to −0.9 ° C.
By controlling the temperature to ° C., it is possible to respond to the required amount of chilled water on the load side and efficiently operate the ice storage type chilled water device.
【００１０】[0010]
【実施例】以下、この発明の実施例を図面に基づいて詳
細に説明する。図１は、この発明を実施した加熱手段に
常温水供給を用いた蓄氷型冷水装置の第１実施例の構成
を示す説明図である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing the configuration of a first embodiment of an ice storage type chiller using a normal temperature water supply as a heating means embodying the present invention.
【００１１】図１において、蓄氷型冷水装置は、冷凍機
１，過冷却水用熱交換器２（以下、「熱交換器２」と云
う）および蓄氷タンク３により構成されている。冷凍機
１は、たとえば液化した冷媒（たとえばフロン）を膨張
弁１ａで減圧した後、前記熱交換器２を介して被冷却水
を冷媒の蒸発潜熱によって冷却する方式のものである。
前記熱交換器２は、図１に示すように、外管２ａを螺旋
状に形成し、その内部に内管２ｂを挿入した二重管構造
であって、外管２ａと内管２ｂとの間に前記蓄氷タンク
３から供給される被冷却水が流通し、内管２ｂ内には前
記冷凍機１から供給される冷媒が流通する。したがっ
て、被冷却水を内管２ｂの外周から冷却して過冷却水と
し、この過冷却水を前記蓄氷タンク３へ流入させ、そこ
で氷結させている。Referring to FIG. 1, the ice storage type chilled water apparatus includes a refrigerator 1, a supercooled water heat exchanger 2 (hereinafter, referred to as a "heat exchanger 2"), and an ice storage tank 3. The refrigerator 1 is of a system in which, for example, a liquefied refrigerant (for example, chlorofluorocarbon) is decompressed by an expansion valve 1a, and then the water to be cooled is cooled by the latent heat of evaporation of the refrigerant via the heat exchanger 2.
As shown in FIG. 1, the heat exchanger 2 has a double pipe structure in which an outer pipe 2a is formed in a spiral shape and an inner pipe 2b is inserted therein. In the meantime, the water to be cooled supplied from the ice storage tank 3 flows, and the refrigerant supplied from the refrigerator 1 flows in the inner pipe 2b. Therefore, the cooled from the outer periphery of the inner tube 2b the cooled water to a supercooled water, allowed to flow into the supercooled water to the蓄氷tank 3, where is frozen.
【００１２】前記冷凍機１と前記内管２ｂとは、膨張弁
１ａを介して冷媒供給路４により接続されるとともに、
冷媒還流路５により接続されており、冷媒が両者間を循
環する構成となっている。一方、前記蓄氷タンク３の下
部と前記外管２ａの入口とは、冷水供給路６によって、
また前記外管２ａの出口と前記蓄氷タンク３との間は過
冷却水還流路７で接続されており、前記冷水供給路６に
は、温度センサ８と加熱手段としての常温水供給路９お
よび循環ポンプ１０が挿設してあり、前記常温水供給路
９には、流量調節弁１１が設けてある。The refrigerator 1 and the inner pipe 2b are connected by a refrigerant supply path 4 via an expansion valve 1a.
The refrigerant is connected by a refrigerant return path 5 so that the refrigerant circulates between the two. On the other hand, the lower part of the ice storage tank 3 and the entrance of the outer pipe 2a are connected by the cold water supply path 6.
A supercooled water return path 7 is connected between the outlet of the outer pipe 2a and the ice storage tank 3, and a cold water supply path 6 has a temperature sensor 8 and a normal temperature water supply path 9 as a heating means. And a circulation pump 10, and a flow rate control valve 11 is provided in the room temperature water supply passage 9.
【００１３】さて、前記蓄氷タンク３内には、水位検出
手段として電極棒方式の水位検出装置１２が設けられて
いる。この水位検出装置１２は、上限水位（Ｓ棒），中
間水位（Ｍ棒）および下限水位（Ｌ棒）をそれぞれ検出
するＳ，Ｍ，Ｌの３電極棒により構成されており、後述
する制御方法で適用する所定水位は、中間水位（Ｍ棒）
を基準としている。また、前記蓄氷タンク３の下部に冷
水取水路１４を接続し、この冷水取水路１４に流量セン
サ１３を設け、上部には給水路１５を接続している。そ
して、前記温度センサ８，加熱手段としての前記常温水
供給路９に設けた流量調節弁１１，前記水位検出装置１
２および前記流量センサ１３は、信号線１６を介して制
御器１７にそれぞれ接続されている。[0013] Now, the above蓄氷tank 3, the water level detector 12 of the electrode rod system is provided as water level detecting means. The water level detector 12 is composed of three electrode rods S, M, and L for detecting an upper limit water level (S rod) , an intermediate water level (M rod), and a lower limit water level (L rod), respectively. The predetermined water level applied in is the middle water level (M bar)
Is the standard. Further, a cold water intake channel 14 is connected to a lower portion of the ice storage tank 3, a flow rate sensor 13 is provided in the cold water intake channel 14, and a water supply channel 15 is connected to the upper portion. Then, the temperature sensor 8, the flow control valve 11 provided in the room temperature water supply passage 9 as a heating means, the water level detecting device 1
2 and the flow sensor 13 are connected to a controller 17 via a signal line 16, respectively.
【００１４】つぎに、上記構成の蓄氷型冷水装置の運転
方法を説明する。この蓄氷型冷水装置は、電力料金の安
い深夜電力を利用して前記蓄氷タンク３内に氷を蓄えて
おき、負荷側の要求に応じ前記蓄氷タンク３の上部に接
続してある給水路１５から所定量の解氷水を供給すると
ともに、下部に接続した冷水取水路１４から冷水を負荷
側へ供給する。負荷側への冷水供給と同時に前記蓄氷型
冷水装置が起動する。Next, an operation method of the ice storage type chilled water device having the above configuration will be described. This ice storage type chilled water device stores ice in the ice storage tank 3 using late-night power at a low electricity rate, and supplies water to the ice storage tank 3 connected to the upper part of the ice storage tank 3 in response to a request from the load side. A predetermined amount of deicing water is supplied from a passage 15, and chilled water is supplied to a load side from a chilled water intake passage 14 connected to a lower portion. The ice storage type chilled water device is activated simultaneously with the supply of chilled water to the load side.
【００１５】ところで、前記蓄氷タンク３内から冷水取
出し運転中における蓄氷型冷水装置の第１の制御方法
は、冷水取出し運転中において、前記熱交換器２内での
凍結を完全に防止するとともに、負荷側の要求する過冷
却にならない冷水温度（たとえば０．１℃）の冷水を供
給して、蓄氷型冷水装置を効率的に運転するものであ
る。すなわち、前記制御器１７は、前記温度センサ８の
検出信号に基づき、前記流量調節弁１１を作動し、前記
冷水供給路６への常温水の流入量を調節し、前記熱交換
器２の入口温度を予め設定してある水温（たとえば１．
８℃）として前記熱交換器２内へ流入させ、所定温度
（０．１℃）の冷水を前記蓄氷タンク３内へ還流させ
る。By the way,The ice storage tank 3Cold water collection from inside
Of ice storage type chilled waterFirst control method
During the cold water take-out operation,
Completely prevents freezing and supercooling required by the load side
Provide cold water at a temperature (for example, 0.1 ° C)
Water to efficiently operate the ice storage type chilled water system.
You. That is, the controller 17 controls the temperature sensor 8
Based on the detection signal, the flow control valve 11 is operated, and the
The amount of room temperature water flowing into the cold water supply path 6 is adjusted to
The water temperature at which the inlet temperature of the vessel 2 is set in advance (for example, 1.
8 ℃)SaidInside heat exchanger 2WhatLet it flow in at a certain temperature
(0.1 ° C) cold waterSaidInside the ice storage tank 3WhatLet it reflux
You.
【００１６】つぎに、第２の制御方法について説明す
る。この第２の制御方法は、冷水取出し運転中における
前記蓄氷タンク３内の水位が、中間水位（Ｍ棒）よりも
高いときは、前記第１の制御方法と同様に、前記温度セ
ンサ８の検出信号に基づき、前記制御器１７は、前記流
量調節弁１１を作動し、前記冷水供給路６への常温水の
流入量を調節し、前記熱交換器２の入口温度を予め設定
してある前記熱交換器２の出口で過冷却にならない温度
（０．１℃）に制御する。また、冷水取出し運転中にお
ける前記蓄氷タンク３内の水位が、前記中間水位（Ｍ
棒）よりも低く、前記冷水取水路１４から供給する冷水
流量が予め設定した所定量以下のときは、前記流量セン
サ１３からの信号に基づき、前記制御器１７は、前記流
量調節弁１１の開度を調節し、前記冷水供給路６から前
記熱交換器２へ流入する被冷却水の入口温度を予め設定
してある前記熱交換器２の出口で過冷却水になる温度−
０．９℃に制御する。この制御方法は、水位が中間水位
よりも低く、かつ冷水取出し量が少ないときは、前記蓄
氷タンク３に冷水が増加するため、製氷運転に切替えて
蓄氷するものである。Next, a second control method will be described. This second control method is similar to the first control method when the water level in the ice storage tank 3 during the cold water removal operation is higher than the intermediate water level (M bar). Based on the detection signal, the controller 17 operates the flow rate control valve 11, adjusts the flow rate of the normal temperature water into the chilled water supply path 6, and sets the inlet temperature of the heat exchanger 2 in advance. At the outlet of the heat exchanger 2, the temperature is controlled to a temperature (0.1 ° C.) at which supercooling does not occur. Further, the water level in the ice storage tank 3 during the cold water removal operation is equal to the intermediate water level (M
When the flow rate of the chilled water supplied from the chilled water intake passage 14 is equal to or less than a predetermined amount, the controller 17 opens the flow rate control valve 11 based on a signal from the flow rate sensor 13. degrees to adjust the, the supercooled water in the cooling water outlet of the heat exchanger 2 to the inlet temperature set in advance of flowing to the heat exchanger 2 from the chilled water supply passage 6 temperature -
Control to 0.9 ° C. This control method, when the water level is lower than the intermediate level, and the cold water extraction amount is small, the 蓄
Since the amount of cold water in the ice tank 3 increases, the operation is switched to the ice making operation to store ice.
【００１７】つぎに、この発明の第２実施例を図２に基
づいて説明する。なお、図１に示す第１実施例と同一部
材には同符号を付し、重複する説明は省略する。Next, a second embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and duplicate description will be omitted.
【００１８】図２に示す実施例は、前記冷水供給路６に
設ける加熱手段に電熱ヒータ１８を適用したもので、特
に寒冷地等の外気温度の低い地区においては好適であ
る。また、加熱手段として、前記冷凍機１の冷媒回路に
第２放熱器（図示省略）を設け（平成７年１１月１６に
出願（特願平７−３２３７４２号）した「蓄氷型冷水装
置の凍結防止装置」と題する発明の明細書および図面参
照）、この第２放熱器を前記冷水供給路６に挿入するこ
とも好適である。The embodiment shown in FIG. 2 employs an electric heater 18 as a heating means provided in the cold water supply passage 6, and is particularly suitable in a region having a low outside air temperature such as a cold region. Further, as a heating means, a second radiator (not shown) is provided in the refrigerant circuit of the refrigerator 1 (application of an ice storage type chilled water device filed on November 16, 1995 (Japanese Patent Application No. 7-323742)). It is also preferable to insert the second radiator into the cold water supply path 6 (see the specification and drawings of the invention entitled "Freezing prevention device").
【００１９】以上説明したように、前記蓄氷型冷水装置
を前記制御方法により運転すれば、負荷側の要求する冷
水量に応じ、前記蓄氷タンク３から前記熱交換器２へ供
給する被冷却水を予め設定した温度に制御し、前記熱交
換器２の出口温度を冷水または過冷却水として還流させ
るので、蓄氷型冷水装置を効率的に運転することができ
る。As described above, if the ice storage type chilled water device is operated by the control method, the cooling target supplied from the ice storage tank 3 to the heat exchanger 2 according to the amount of chilled water required on the load side. Since the water is controlled to a preset temperature and the outlet temperature of the heat exchanger 2 is refluxed as cold water or supercooled water, the ice storage type chilled water device can be operated efficiently.
【００２０】[0020]
【発明の効果】以上説明したように、この発明によれ
ば、負荷側の要求する冷水要求量に対応し、蓄氷型冷水
装置を効率的に運転することができる。As described above, according to the present invention, the ice storage type chilled water device can be operated efficiently according to the amount of chilled water required on the load side .
【図１】この発明を実施した蓄氷型冷水装置の第１実施
例の構成を示す説明図である。FIG. 1 is an explanatory diagram showing the configuration of a first embodiment of an ice storage type chilled water device embodying the present invention.
【図２】この発明を実施した蓄氷型冷水装置の第２実施
例の構成を示す説明図である。FIG. 2 is an explanatory diagram showing the configuration of a second embodiment of the ice storage type chilled water device embodying the present invention.
【図３】従来の蓄氷型冷水装置の構成を示す説明図であ
る。FIG. 3 is an explanatory diagram showing a configuration of a conventional ice storage type chilled water device.
１ 冷凍機 ２ 過冷却水用熱交換器 ３ 蓄氷タンク ６ 冷水供給路 ８ 温度センサ９ 常温水供給路 １１ 流量調節弁 １２ 水位検出装置 １３ 流量センサ １４ 冷水取水路 １７ 制御器DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat exchanger for supercooled water 3 Ice storage tank 6 Cold water supply path 8 Temperature sensor 9 Room temperature water supply path 11 Flow control valve 12 Water level detection device 13 Flow rate sensor 14 Cold water intake path 17 Controller
Claims (1)
蓄氷タンク３により構成された蓄氷型冷水装置における
制御方法であって、前記蓄氷タンク３から冷水取出し運
転中、前記蓄氷タンク３内の水位が所定水位よりも高い
ときは、被冷却水の温度を前記過冷却水用熱交換器２の
出口で過冷却にならない温度に制御し、また所定水位よ
りも低いときは、被冷却水の温度を前記過冷却水用熱交
換器２の出口で過冷却になる温度に制御することを特徴
とする蓄氷型冷水装置の制御方法。 1. A control method in an ice storage type chilled water device comprising a refrigerator 1, a supercooled water heat exchanger 2 and an ice storage tank 3, wherein the operation is performed during the operation of taking out cold water from the ice storage tank 3. When the water level in the ice storage tank 3 is higher than the predetermined water level, the temperature of the water to be cooled is controlled so as not to be supercooled at the outlet of the supercooled water heat exchanger 2, and when the water level is lower than the predetermined water level. Controlling the temperature of the water to be cooled to a temperature at which the cooling water is supercooled at the outlet of the supercooled water heat exchanger 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7345140A JP3050114B2 (en) | 1995-12-06 | 1995-12-06 | Control method of ice storage type chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7345140A JP3050114B2 (en) | 1995-12-06 | 1995-12-06 | Control method of ice storage type chiller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09159232A JPH09159232A (en) | 1997-06-20 |
| JP3050114B2 true JP3050114B2 (en) | 2000-06-12 |
Family
ID=18374557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7345140A Expired - Fee Related JP3050114B2 (en) | 1995-12-06 | 1995-12-06 | Control method of ice storage type chiller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3050114B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464127C (en) * | 2006-11-15 | 2009-02-25 | 珠海格力电器股份有限公司 | Cold accumulation control method for ice cold accumulation machine set |
| CN102467587B (en) * | 2010-11-01 | 2014-01-29 | 财团法人工业技术研究院 | Dynamic characteristic model building method of chilling system, chilling system monitoring method and chilling method monitoring device |
| CN103548762A (en) * | 2013-10-31 | 2014-02-05 | 无锡同春新能源科技有限公司 | Cooling device for throwing ice blocks into snakehead culture pond applying chilled water made by solar energy |
| CN103548759A (en) * | 2013-10-31 | 2014-02-05 | 无锡同春新能源科技有限公司 | Cooling device for throwing ice grains into crab culture pond applying chilled water made by solar energy |
| CN106196879A (en) * | 2016-05-04 | 2016-12-07 | 北塘区美悦工业设计工作室 | A kind of dual-purpose ice bucket |
| IT202000004105A1 (en) * | 2020-02-27 | 2021-08-27 | Fabio Fagnani | Machine for the production of chilled water, and process using a machine of the aforesaid type |
-
1995
- 1995-12-06 JP JP7345140A patent/JP3050114B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09159232A (en) | 1997-06-20 |
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