JP3220817B2 - Control device of ice making device in ice heat storage device - Google Patents
Control device of ice making device in ice heat storage deviceInfo
- Publication number
- JP3220817B2 JP3220817B2 JP33112392A JP33112392A JP3220817B2 JP 3220817 B2 JP3220817 B2 JP 3220817B2 JP 33112392 A JP33112392 A JP 33112392A JP 33112392 A JP33112392 A JP 33112392A JP 3220817 B2 JP3220817 B2 JP 3220817B2
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- ice making
- compressor
- ice
- storage liquid
- 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
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は氷の潜熱を利用して蓄熱
する氷蓄熱装置における製氷装置の制御装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an ice making device in an ice heat storage device that stores heat using the latent heat of ice.
【０００２】[0002]
【従来技術】従来この種の氷蓄熱装置は、製氷用熱交換
器、圧縮機、凝縮器を具備し、これらの機器を冷媒配管
で連結して製氷装置を構成し、蓄熱槽から凍結させる蓄
熱液を蓄熱液配管を通してポンプにより前記製氷用熱交
換器に送り、該製氷用熱交換器内において、凍結した蓄
熱液（氷）を蓄熱液配管を通し蓄熱槽に戻すように構成
されている。2. Description of the Related Art Conventionally, this type of ice heat storage device includes an ice making heat exchanger, a compressor, and a condenser, and these devices are connected by a refrigerant pipe to constitute an ice making device, and heat storage for freezing from a heat storage tank. The liquid is sent to the ice making heat exchanger by a pump through a heat storage liquid pipe, and the frozen heat storage liquid (ice) is returned to the heat storage tank through the heat storage liquid pipe in the ice making heat exchanger.
【０００３】[0003]
【発明が解決しようとする課題】上記、従来の氷蓄熱装
置の製氷装置においては、蓄熱槽の氷蓄積量（ＩＰＦ）
が過度になると製氷装置の製氷用熱交換器に氷が流入
し、製氷効率が低下するという不具合があった。また、
最悪の場合には蓄熱液の再凍結により、氷密度が過度に
なり該製氷用熱交換器の伝熱管の損傷を起こすという不
具合が発生していた。また、同様に圧縮機の運転におい
ても冷媒蒸発圧力の低下を招き、低効率運転や、ターボ
圧縮機の場合にはサージング運転により軸受損傷事故の
恐れがあった。In the above-mentioned conventional ice making device for an ice heat storage device, the amount of ice accumulated in the heat storage tank (IPF).
When the water content is excessive, ice flows into the ice making heat exchanger of the ice making device, and the ice making efficiency is reduced. Also,
In the worst case, re-freezing of the heat storage liquid has caused a problem that the ice density becomes excessive and the heat transfer tubes of the ice making heat exchanger are damaged. Similarly, in the operation of the compressor, the refrigerant evaporation pressure is also reduced, and there is a possibility that the bearing may be damaged due to the low-efficiency operation or the surging operation in the case of the turbo compressor.
【０００４】本発明は上述の点に鑑みてなされたもの
で、過剰凍結を防ぎ、圧縮機の運転における冷媒蒸発圧
力の低下による低効率運転や、圧縮機がターボ圧縮機の
場合のサージング運転により軸受損傷事故を防止できる
氷蓄熱装置における製氷装置の制御装置を提供すること
を目的とする。[0004] The present invention has been made in view of the above points, and prevents over-freezing, low efficiency operation by lowering the refrigerant evaporation pressure in the operation of the compressor, and surging operation when the compressor is a turbo compressor. An object of the present invention is to provide a control device for an ice making device in an ice heat storage device that can prevent a bearing damage accident.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
本発明は、製氷用熱交換器、凝縮器及び圧縮機を具備
し、これらの機器を冷媒配管で連結して製氷装置を構成
し、蓄熱槽から凍結させる蓄熱液を蓄熱液配管を通して
製氷用熱交換器に送り、凍結した蓄熱液を蓄熱槽に戻す
ように氷蓄熱装置を構成し、製氷運転時に製氷用熱交換
器への蓄熱液の流れを停止する氷蓄熱装置における製氷
装置の制御装置において、蓄熱液温度が凍結点近傍に達
するまでは、製氷用熱交換器への蓄熱液の流れを停止せ
ず該蓄熱液温度が凍結点近傍になるように蓄熱液温度に
より圧縮機を制御し、該蓄熱液温度が凍結点近傍に達し
た後、製氷運転に入り、該製氷運転時に圧縮機の吸い込
み圧力を予め設定された圧力になるように吸い込み冷媒
ガス風量を制御する手段を設けると共に、該吸い込み冷
媒ガス風量制御の制御値が予め設定された設定制御値以
下になった場合に製氷装置の運転を停止する手段を設け
たことを特徴とする。In order to solve the above-mentioned problems, the present invention comprises an ice making heat exchanger, a condenser and a compressor, and these devices are connected by a refrigerant pipe to constitute an ice making device. The heat storage liquid to be frozen from the heat storage tank is sent to the ice making heat exchanger through the heat storage liquid pipe, and the ice heat storage device is configured to return the frozen heat storage liquid to the heat storage tank. In the control device of the ice making device in the ice heat storage device, the flow of the heat storage solution to the ice making heat exchanger is not stopped until the temperature of the heat storage solution reaches the vicinity of the freezing point. controls compressor by the heat storage fluid temperature so that in the vicinity, after the heat storage fluid temperature reaches the vicinity of freezing point, it enters the ice-making operation, the preset pressure of the suction pressure of the compressor when the ice-making operation Control the air flow of the refrigerant gas Rutotomoni, the suction cold providing a stage
The control value of the medium gas flow rate control is less than the preset control value.
A means is provided for stopping the operation of the ice making device when it goes down .
【０００６】[0006]
【０００７】また、圧縮機の吸い込み部に風量制御ダン
パを設け、風量制御を風量制御ダンパの開度を制御して
行う手段を設けたことを特徴とする。Further, an air flow control damper is provided at a suction portion of the compressor, and means for controlling the air flow by controlling the opening of the air flow control damper is provided.
【０００８】また、圧縮機が回転式圧縮機であり、吸い
込みガス風量の制御を該圧縮機の回転数を制御して行う
手段を設けたことを特徴とする。[0008] Further, the compressor is a rotary compressor, and a means for controlling the intake gas flow rate by controlling the rotation speed of the compressor is provided.
【０００９】また、製氷運転時に圧縮機吸い込み圧力が
予め設定された圧力未満になった時運転を停止するよう
にしたことを特徴とする。[0009] Further, the present invention is characterized in that the operation is stopped when the compressor suction pressure falls below a preset pressure during the ice making operation.
【００１０】[0010]
【作用】本発明によれは製氷装置の制御装置を上記のよ
うに構成することにより、蓄熱槽の氷蓄積量（ＩＰＦ）
が過度になると製氷装置の製氷用熱交換器に氷が流入
し、圧縮機の吸い込み圧力が低下するが、吸い込みガス
量を風量制御ダンパにより制限し、吸い込み圧力を一定
以上に制御することができるから、蓄熱用液が過剰に凍
結する不具合を防止できる。また、同様に圧縮機の運転
においても、冷媒蒸発圧力の低下による低効率運転を防
止することができる。According to the present invention, the control device of the ice making device is configured as described above, so that the amount of accumulated ice (IPF) in the heat storage tank is obtained.
When the flow rate becomes excessive, ice flows into the ice making heat exchanger of the ice making device, and the suction pressure of the compressor decreases.However, the suction gas amount is limited by the air flow control damper, and the suction pressure can be controlled to a certain level or more. Therefore, it is possible to prevent a problem that the heat storage liquid is excessively frozen. Similarly, in the operation of the compressor, it is possible to prevent a low-efficiency operation due to a decrease in the refrigerant evaporation pressure.
【００１１】また、圧縮機が例えばターボ圧縮機の場合
で、該圧縮機の吸い込みガス風量制御を吸い込み部に設
けた風量制御ダンパの開度を制御して行う場合、風量制
御ダンパの開度を圧縮機がサージングに入る限界開度に
達すると製氷装置の運転（主に圧縮機の運転）を停止す
るようにすることにより、サージング運転による軸受損
傷事故を防止できる。また、圧縮機が例えば回転式圧縮
機の場合には、該圧縮機の吸い込みガス風量制御は回転
数を制御して行うことができるが、この場合、上記製氷
装置の運転の停止は、制御回転数が予め設定した限界値
に達した時に行う。In the case where the compressor is, for example, a turbo compressor, and the control of the suction gas flow rate of the compressor is performed by controlling the opening degree of a flow rate control damper provided in the suction portion, the opening degree of the flow rate control damper is determined. By stopping the operation of the ice making device (mainly the operation of the compressor) when the compressor reaches a limit opening at which surging can be performed, bearing damage accidents due to surging operation can be prevented. Further, when the compressor is, for example, a rotary compressor, the suction gas air volume control of the compressor can be performed by controlling the rotation speed. In this case, the operation of the ice making device is stopped by the control rotation. Performed when the number reaches a preset limit.
【００１２】前記製氷運転時に、負荷の急変等で圧力制
御ができず圧縮機吸い込み圧力が予め設定された圧力未
満になった時には製氷装置の運転を停止する。このよう
に制御することにより、蓄熱液が過剰に凍結するという
不具合を防止できる。During the ice making operation, when the pressure cannot be controlled due to a sudden change in the load or the like and the compressor suction pressure falls below a predetermined pressure, the operation of the ice making device is stopped. By performing such control, it is possible to prevent a problem that the heat storage liquid is excessively frozen.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は本発明の製氷装置の制御装置を用いる氷蓄
熱装置の構成を示す図である。図１に示すように、本氷
蓄熱装置は、製氷用熱交換器１、凝縮器３及び圧縮機２
を冷媒配管４，５，６で連結し、製氷装置を構成し、蓄
熱液ポンプ９より蓄熱槽７中の蓄熱液を蓄熱液配管１０
を通して、前記製氷装置の製氷用熱交換器１に送り、該
製氷用熱交換器１で凍結した蓄熱液（氷）を蓄熱液配管
１１を通して蓄熱槽７へ戻すように構成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of an ice heat storage device using the control device of the ice making device of the present invention. As shown in FIG. 1, the ice heat storage device includes an ice making heat exchanger 1, a condenser 3, and a compressor 2.
Are connected by refrigerant pipes 4, 5, and 6 to constitute an ice making device, and a heat storage liquid in a heat storage tank 7 is supplied from a heat storage liquid pump 9 to a heat storage liquid pipe 10.
To the heat exchanger 1 for ice making of the ice making apparatus, and the heat storage liquid (ice) frozen in the heat exchanger 1 for ice making is returned to the heat storage tank 7 through the heat storage liquid pipe 11.
【００１４】製氷装置の製氷用熱交換器１には水平に配
置した複数本の伝熱管１３が配置されており、該伝熱管
１３の内部に蓄熱液が流入されるようになっている。該
伝熱管１３の上部には冷媒スプレー配管１４が配置され
ており、冷媒スプレーポンプ１５により製氷用熱交換器
１内の冷媒液を該冷媒スプレー配管１４に送り、冷媒液
を霧状にして伝熱管１３の上に散布する。A plurality of horizontally arranged heat transfer tubes 13 are arranged in the ice making heat exchanger 1 of the ice making device, and a heat storage liquid flows into the heat transfer tubes 13. A refrigerant spray pipe 14 is disposed above the heat transfer tube 13. The refrigerant liquid in the ice making heat exchanger 1 is sent to the refrigerant spray pipe 14 by a refrigerant spray pump 15, and the refrigerant liquid is atomized and transferred. Sprinkle on the heat tube 13.
【００１５】製氷用熱交換器１の伝熱管１３の上に散布
された冷媒液は蒸発し、冷媒配管４を通って圧縮機２に
吸い込まれる。該圧縮機２で昇圧された冷媒ガスは凝縮
器３で冷却水により冷却された冷媒液となって製氷用熱
交換器１に戻るようになっている。一方、伝熱管１３上
に散布された冷媒液が蒸発することにより、該伝熱管１
３内の蓄熱液の温度が低下し、それが凍結点以下の温度
になると該蓄熱液が凍結を開始する。The refrigerant liquid sprayed on the heat transfer tubes 13 of the ice making heat exchanger 1 evaporates and is sucked into the compressor 2 through the refrigerant pipe 4. The refrigerant gas pressurized by the compressor 2 becomes refrigerant liquid cooled by cooling water in the condenser 3 and returns to the ice making heat exchanger 1. On the other hand, when the refrigerant liquid sprayed on the heat transfer tube 13 evaporates,
When the temperature of the heat storage liquid in 3 decreases and becomes lower than the freezing point, the heat storage liquid starts freezing.
【００１６】蓄熱槽７は低温槽７−１と高温槽７−２に
区分されている。負荷熱交換器２１には負荷側ポンプ２
２により、負荷側より負荷流体が循環するようになって
おり、蓄熱液負荷ポンプ２０で低温槽７−１の低温の蓄
熱液を前記負荷熱交換器２１に送ることにより、該負荷
熱交換器２１内で該蓄熱液は負荷流体からの熱を奪い負
荷流体の温度を下げる。この温度の下がった負荷流体を
冷房等に利用する。The heat storage tank 7 is divided into a low-temperature tank 7-1 and a high-temperature tank 7-2. The load heat exchanger 21 has a load-side pump 2
2, the load fluid circulates from the load side, and the low-temperature heat storage liquid in the low-temperature tank 7-1 is sent to the load heat exchanger 21 by the heat storage liquid load pump 20, so that the load heat exchanger In 21, the heat storage liquid removes heat from the load fluid and lowers the temperature of the load fluid. The cooled load fluid is used for cooling or the like.
【００１７】上記構成の氷用蓄熱装置において、蓄熱液
ポンプ９を停止することにより、蓄熱液は製氷用熱交換
器１の伝熱管１３内に留まったままとなる。上記のよう
に冷媒の蒸発により、伝熱管１３内の蓄熱液の熱は奪わ
れ、蓄熱液の温度は低下する。そして温度が凍結点以下
になると蓄熱液の凍結が開始し、ある時間経過すると凍
結する。なお、製氷用熱交換器１が複数台あり、１台の
蓄熱液ポンプ９から該複数台の製氷用熱交換器１に蓄熱
液を供給する場合は、蓄熱液ポンプ９を運転したまま開
閉弁１２を閉じて蓄熱液を停止することもできる。この
場合は、開閉弁１２はそれぞれの製氷用熱交換器１に個
別に付属される。In the ice heat storage device having the above configuration, the heat storage liquid remains in the heat transfer tube 13 of the ice making heat exchanger 1 by stopping the heat storage liquid pump 9. As described above, the heat of the heat storage liquid in the heat transfer tube 13 is taken away by the evaporation of the refrigerant, and the temperature of the heat storage liquid decreases. When the temperature falls below the freezing point, the heat storage liquid starts freezing and freezes after a certain period of time. When a plurality of heat exchangers 1 for ice making are provided and the heat storage liquid is supplied from one heat storage liquid pump 9 to the plurality of heat exchangers 1 for ice making, the opening / closing valve is operated while the heat storage liquid pump 9 is operated. The heat storage liquid can be stopped by closing 12. In this case, the on-off valves 12 are individually attached to the respective ice making heat exchangers 1.
【００１８】上記氷用蓄熱装置において、蓄熱液温度が
凍結点近傍に達するまでは製氷用熱交換器１への蓄熱液
の流れを停止せず蓄熱液温度が凍結点近傍になるように
蓄熱液温度により圧縮機２の吸い込み風量を制御し、蓄
熱液温度が凍結点近傍に達した後、製氷運転に入る。製
氷運転時には圧縮機２の吸い込み圧力をを予め設定され
た圧力になるように吸い込み冷媒ガス風量を制御する。
以下詳細に説明する。In the above ice heat storage device, the flow of the heat storage liquid to the ice making heat exchanger 1 is not stopped until the temperature of the heat storage liquid reaches the vicinity of the freezing point so that the temperature of the heat storage liquid becomes close to the freezing point. The suction air volume of the compressor 2 is controlled by the temperature, and after the heat storage liquid temperature reaches near the freezing point, the ice making operation is started. During the ice making operation, the suction refrigerant gas flow rate is controlled so that the suction pressure of the compressor 2 becomes a preset pressure.
This will be described in detail below.
【００１９】蓄熱液温度が凍結点近傍に達するまでは、
製氷と冷水運転を切り換える切換器３３をｂ側に閉じて
おき、温度コントローラ３２は該温度センサ３１の出力
を監視し、温度センサ３１の出力、即ち蓄熱液の温度が
凍結点近傍になるように、圧縮機２の吸い込み部に設け
た風量制御ダンパ２−１の開度を制御し、吸い込み風量
を制御する。この時、風量制御ダンパ２−１の開度が予
め設定した開度、例えば、圧縮機２がターボ圧縮機の場
合はサージング限界開度、即ちサージングが発生する限
界の最小風量になったとき製氷装置（主に圧縮機２）の
運転を停止する。このように制御することにより、圧縮
機２をサージング運転による軸受の損傷事故から防止で
きる。Until the temperature of the heat storage liquid reaches near the freezing point,
The switch 33 for switching between ice making and cold water operation is closed on the b side, and the temperature controller 32 monitors the output of the temperature sensor 31 so that the output of the temperature sensor 31, that is, the temperature of the heat storage liquid is near the freezing point. In addition, the opening degree of the air flow control damper 2-1 provided in the suction section of the compressor 2 is controlled to control the suction air flow. At this time, when the opening degree of the air volume control damper 2-1 reaches a preset opening degree, for example, when the compressor 2 is a turbo compressor, the surging limit opening degree, that is, when the minimum air flow rate at which surging occurs, the ice making is performed. The operation of the device (mainly the compressor 2) is stopped. By controlling in this way, the compressor 2 can be prevented from being damaged by a surging operation of the bearing.
【００２０】凍結点近傍に達すると切換器３３をａ側に
閉じて、吸い込み圧力コントローラ３５は圧力センサ３
４の出力を監視し、該圧力センサ３４の出力、即ち圧縮
機２の吸い込み冷媒ガス圧力が予め設定された圧力にな
るように風量制御ダンパ２−１の開度を制御し、吸い込
み冷媒ガス風量を制御する。このように制御することに
より、蓄熱槽７の氷蓄積量（ＩＰＦ）が過度になると製
氷用熱交換器１に氷が流入し、圧縮機２の吸い込み圧力
が低下するから、風量制御ダンパ２−１により吸い込み
風量を制限し、吸い込み圧力を前記予め設定された圧力
以上に維持し、蓄熱液が過剰に凍結することにより製氷
効率が低下するという不具合を防止できる。同様に圧縮
機２の運転においても、冷媒蒸発圧力の低下による低効
率運転を防止することができる。なお、切換器３３の切
り換えは温度センサの出力等により自動的に切り換える
ようにする。When reaching the vicinity of the freezing point, the switch 33 is closed to the side a, and the suction pressure controller 35
4, the opening of the air volume control damper 2-1 is controlled so that the output of the pressure sensor 34, that is, the suction refrigerant gas pressure of the compressor 2, becomes a preset pressure. Control. By controlling in this way, if the amount of accumulated ice (IPF) in the heat storage tank 7 becomes excessive, ice flows into the ice making heat exchanger 1 and the suction pressure of the compressor 2 decreases, so that the air volume control damper 2- 1, the suction air volume is limited, the suction pressure is maintained at or above the preset pressure, and the problem that ice making efficiency is reduced due to excessive freezing of the heat storage liquid can be prevented. Similarly, in the operation of the compressor 2, low-efficiency operation due to a decrease in refrigerant evaporation pressure can be prevented. The switching of the switch 33 is automatically performed by the output of the temperature sensor or the like.
【００２１】また、負荷の急変等で圧力制御ができず予
め設定された圧力未満になった時には製氷装置（主に圧
縮機２）の運転を停止する。このように制御することに
より、蓄熱液の過剰凍結による不都合を防止できる。When the pressure cannot be controlled due to a sudden change in load or the like and the pressure becomes lower than a preset pressure, the operation of the ice making device (mainly the compressor 2) is stopped. By performing such control, it is possible to prevent inconvenience due to excessive freezing of the heat storage liquid.
【００２２】また、圧縮機２が回転式圧縮機である場合
は、吸い込みガス風量の制御は該圧縮機２の回転数をモ
ータ回転周波数計３６で監視しながら、回転数を制御し
て行うこともできる。この場合、制御回転数が予め設定
した限界値に達した時、製氷装置の運転を停止する。When the compressor 2 is a rotary compressor, the suction gas flow rate is controlled by controlling the rotation speed while monitoring the rotation speed of the compressor 2 with a motor rotation frequency meter 36. Can also. In this case, when the control rotation speed reaches a preset limit value, the operation of the ice making device is stopped.
【００２３】[0023]
【発明の効果】上記のように本発明によれば、下記のよ
うな優れた効果が得られる。 （１）蓄熱用液が過剰な凍結を防止することができ、過
剰凍結による製氷効率の低下、製氷用熱交換器の伝熱管
の損傷等の不具合を防止できる。また、同様に圧縮機の
運転においても、冷媒蒸発圧力の低下による低効率運転
を防止することができる。According to the present invention as described above, the following excellent effects can be obtained. (1) Excessive freezing of the heat storage liquid can be prevented, and problems such as a decrease in ice making efficiency due to excessive freezing and damage to the heat transfer tubes of the ice making heat exchanger can be prevented. Similarly, in the operation of the compressor, it is possible to prevent a low-efficiency operation due to a decrease in the refrigerant evaporation pressure.
【００２４】また、圧縮機の吸い込み冷媒ガス風量制御
の制御値が予め設定された設定制御値以下になった場合
に製氷装置の運転を停止する手段を設けたので、例えば
圧縮機がターボ圧縮機の場合、この設定制御値を圧縮機
がサージングに入る限界値に設定することにより、吸い
込み冷媒ガス風量制御の制御値が該設定値に達すると製
氷装置の運転を停止させるから、サージング運転による
軸受損傷事故を防止できる。In addition, the flow rate of the refrigerant gas sucked into the compressor is controlled.
When the control value of falls below the preset control value
Means for stopping the operation of the ice making device is provided. For example , when the compressor is a turbo compressor, this set control value is
By setting the threshold value at which
The operation of the ice making device is stopped when the control value of the control of the refrigerant gas flow rate reaches the set value, so that a bearing damage accident due to the surging operation can be prevented.
【００２５】（２）また、圧縮機が例えば回転式圧縮機
の場合には、該回転数を制御することにより圧縮機の吸
い込みガス風量を制御し、制御回転数が予め設定した限
界値に達した時に製氷装置の運転を停止することによ
り、圧縮機の低効率運転を防止できる。(2) When the compressor is, for example, a rotary compressor, by controlling the number of revolutions, the amount of gas suctioned by the compressor is controlled, and the control number of revolutions reaches a preset limit value. By stopping the operation of the ice making device at the time, the low efficiency operation of the compressor can be prevented.
【００２６】（３）前記製氷運転時に、負荷の急変等で
圧力制御ができず圧縮機吸い込み圧力が予め設定された
圧力未満になった時には製氷装置の運転を停止するよう
に制御することにより、蓄熱液が過剰に凍結するという
不具合を防止できる。(3) During the ice making operation, the operation of the ice making device is stopped when the pressure cannot be controlled due to a sudden change in the load and the suction pressure of the compressor becomes less than a predetermined pressure. The problem that the heat storage liquid is excessively frozen can be prevented.
【図１】本発明の製氷装置の制御装置を用いる氷蓄熱装
置の構成を示す図である。FIG. 1 is a diagram showing a configuration of an ice heat storage device using a control device of an ice making device of the present invention.
１ 製氷用熱交換器 ２ 圧縮機 ３ 凝縮器 ４ 冷媒配管 ５ 冷媒配管 ６ 冷媒配管 ７ 蓄熱槽 ９ 蓄熱液ポンプ １０ 蓄熱液配管 １１ 蓄熱液配管 １２ 開閉弁 １３ 伝熱管 １４ 冷媒スプレー配管 １５ 冷媒スプレーポンプ １６ ポンプ ２０ 蓄熱液負荷ポンプ ２１ 負荷熱交換器 ２２ 負荷側ポンプ ３１ 温度センサ ３２ 温度コントローラ ３３ 切換器 ３４ 圧力センサ ３５ 吸い込み圧力コントローラ ３６ モータ回転周波数計 DESCRIPTION OF SYMBOLS 1 Heat exchanger for ice making 2 Compressor 3 Condenser 4 Refrigerant piping 5 Refrigerant piping 6 Refrigerant piping 7 Thermal storage tank 9 Thermal storage liquid pump 10 Thermal storage liquid piping 11 Thermal storage liquid piping 12 On-off valve 13 Heat transfer tube 14 Refrigerant spray piping 15 Refrigerant spray pump Reference Signs List 16 pump 20 heat storage liquid load pump 21 load heat exchanger 22 load side pump 31 temperature sensor 32 temperature controller 33 switch 34 pressure sensor 35 suction pressure controller 36 motor rotation frequency meter
フロントページの続き (72)発明者 増本 幹夫 東京都大田区羽田旭町11番１号 株式会 社荏原製作所内 (72)発明者 藤本 正和 東京都大田区羽田旭町11番１号 株式会 社荏原製作所内 (56)参考文献 特開 平１−114682（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25C 1/00 F24F 5/00 F25B 1/00 F25B 1/053 Continued on the front page (72) Inventor Mikio Masumoto 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Corporation (72) Inventor Masakazu Fujimoto 11-1 Haneda Asahi-cho, Ota-ku, Tokyo Ebara Corporation (56) References JP-A-1-114682 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F25C 1/00 F24F 5/00 F25B 1/00 F25B 1/053
Claims (4)
備し、これらの機器を冷媒配管で連結して製氷装置を構
成し、蓄熱槽から凍結させる蓄熱液を蓄熱液配管を通し
て前記製氷用熱交換器に送り、凍結した蓄熱液を前記蓄
熱槽に戻すように氷蓄熱装置を構成し、製氷運転時に前
記製氷用熱交換器への前記蓄熱液の流れを停止する氷蓄
熱装置における製氷装置の制御装置において、 前記蓄熱液温度が凍結点近傍に達するまでは、前記製氷
用熱交換器への蓄熱液の流れを停止せず該蓄熱液温度が
凍結点近傍になるように蓄熱液温度により前記圧縮機を
制御し、該蓄熱液温度が凍結点近傍に達した後、前記製
氷運転に入り、該製氷運転時に前記圧縮機の吸い込み圧
力を予め設定された圧力になるように吸い込み冷媒ガス
風量を制御する手段を設けると共に、該吸い込み冷媒ガ
ス風量制御の制御値が予め設定された設定制御値以下に
なった場合に製氷装置の運転を停止する手段を設けたこ
とを特徴とする氷蓄熱装置における製氷装置の制御装
置。1. An ice making device comprising a heat exchanger for ice making, a condenser, and a compressor, and connecting these devices by a refrigerant pipe to form an ice making device, wherein a heat storage liquid to be frozen from a heat storage tank is passed through the heat storage liquid pipe. An ice heat storage device configured to send the frozen heat storage liquid to the heat storage tank and return the frozen heat storage liquid to the heat storage tank, and to stop the flow of the heat storage liquid to the ice making heat exchanger during the ice making operation. In the control device of the apparatus, the flow of the heat storage liquid to the ice making heat exchanger is not stopped until the temperature of the heat storage liquid reaches the vicinity of the freezing point, and the temperature of the heat storage liquid is set so that the temperature of the heat storage liquid is near the freezing point. After the heat storage liquid temperature reaches the vicinity of the freezing point, the ice making operation is started, and the refrigerant gas is sucked so that the suction pressure of the compressor becomes a predetermined pressure during the ice making operation. a means for controlling the air volume Together, the suction refrigerant gas
When the control value of the airflow control falls below the preset control value
A control device for an ice making device in an ice heat storage device, comprising means for stopping the operation of the ice making device in the event of a failure .
パを設け、前記風量制御を該風量制御ダンパの開度を制
御して行う手段を設けたことを特徴とする請求項１に記
載の氷蓄熱装置における製氷装置の制御装置。 2. The ice according to claim 1, wherein an air flow control damper is provided at a suction portion of the compressor, and means for controlling the air flow by controlling an opening of the air flow control damper is provided. Control device of ice making device in heat storage device.
込み冷媒ガス風量の制御を該圧縮機の回転数を制御して
行う手段を設けたことを特徴とする請求項１に記載の氷
蓄熱装置における製氷装置の制御装置。 3. The ice according to claim 1, wherein said compressor is a rotary compressor, and means for controlling the flow rate of the suctioned refrigerant gas by controlling the rotation speed of said compressor is provided. Control device of ice making device in heat storage device.
予め設定された圧力未満になった時運転を停止するよう
にしたことを特徴とする請求項１又は２又は３に記載の
氷蓄熱装置における製氷装置の制御装置。 Wherein in the ice heat storage device according to claim 1 or 2 or 3, characterized in that so as to stop the operation when the suction pressure compressor during the ice making operation is less than a preset pressure Control device for ice making equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33112392A JP3220817B2 (en) | 1992-11-17 | 1992-11-17 | Control device of ice making device in ice heat storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33112392A JP3220817B2 (en) | 1992-11-17 | 1992-11-17 | Control device of ice making device in ice heat storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06159872A JPH06159872A (en) | 1994-06-07 |
| JP3220817B2 true JP3220817B2 (en) | 2001-10-22 |
Family
ID=18240131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33112392A Expired - Fee Related JP3220817B2 (en) | 1992-11-17 | 1992-11-17 | Control device of ice making device in ice heat storage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3220817B2 (en) |
-
1992
- 1992-11-17 JP JP33112392A patent/JP3220817B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06159872A (en) | 1994-06-07 |
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