JP4247698B2

JP4247698B2 - Cooling system

Info

Publication number: JP4247698B2
Application number: JP06982899A
Authority: JP
Inventors: 賢治大槻
Original assignee: Hitachi Metals Ltd
Current assignee: Hitachi Metals Ltd
Priority date: 1999-03-16
Filing date: 1999-03-16
Publication date: 2009-04-02
Anticipated expiration: 2019-03-16
Also published as: JP2000266447A

Description

【０００１】
【発明の属する技術分野】
本発明は、冷却すべき機器から戻る被冷却水を冷却した後、前記機器に送り出す冷却装置に関し、詳しくは１８℃から２９℃程度の中低温域に効率よく冷却する冷却装置に関するものである。
【０００２】
【従来の技術】
従来、中低温に最小限のエネルギーで冷却する冷却装置として本出願人の発明による実開昭６１−８４４８０号公報で開示されたものがある。
このものは図２に示すように、上部に蒸発式冷却塔と下部にチラーとを一体的に組み合わせた冷却装置である。冷却塔の内部には複数層の伝熱パイプ２が配置されており、被冷却水は入り口ヘッダー３から伝熱パイプ２内に入って出口ヘッダー４へ出て下部のチラーの蒸発器１５を通り使用中の冷却すべき機器へ冷却のため送られるようになっている。
【０００３】
伝熱パイプ２の下部には受水槽６を設けてあり、水が常時保有されている。この水はポンプ７によって揚水管８を通り散水層５に送られ、散水層５の底面に開けられた多数の***を通して伝熱パイプ２に散水される。散水された水は伝熱パイプの表面に水膜を作りながら下方の伝熱パイプに順に落下し、この間ファン１０の送風によって伝熱パイプが散水された水の蒸発潜熱で冷やされ、伝熱パイプ内を通過する水が冷却されるものである。
【０００４】
夏場等で上部の冷却塔だけで冷え足たりないときは下部のチラーも運転され、冷却搭で冷却された後、下部のチラーで更に冷却される。上部の冷却塔部のみで目的の温度に冷却できる場合はチラーの運転が停止しており、上部の冷却塔の冷却能力は散水装置の散水量やファン１０の風量調節によって行われる。また外気温度によって受水槽の水を散水層５に送水するポンプ７の揚水量も調節され、冬場の外気温度が低いときは散水が停止される。
【０００５】
【発明が解決しようとする課題】
上記した冷却装置は蒸発式冷却塔であって、散水装置で伝熱パイプに散水し、これをファンによる送風によって蒸発潜熱で冷却するので冷却効率に優れたものである。しかしながら上記のごとく蒸発式冷却塔は、散水漕や受水槽、揚水ポンプなどの装置が必要で複雑な構造となり、また散水のための水を必要とするために地下水等、水の供給源を確保しなければならず、設置場所にも問題があった。また補給水の水質が悪い場合や、粉塵、煤煙、塩分などを含む設置環境が悪い場所では散水する水質を汚し、これを冷却塔内で散水するため、腐食やスケールを発生させる原因ともなっていた。
【０００６】
更に上記のごとく散水装置の伝熱パイプへの散水量が不連続な場合には、散水中のカルシュウムやマグネシュウムが伝熱パイプの表面に析出して乾燥固着し、伝熱パイプの熱伝導が悪化する問題があった。このため定期的に伝熱パイプ表面の析出物を取り除く掃除をしなければならず、メンテナンス性に問題があった。また冷却塔内の散布水で冷却すべき機器から戻った被冷却水とコンデンサーとを共通して散水する場合は、コンデンサーからの放熱で散布水温が上昇し、被冷却水の冷却性能が十分発揮されない問題があった。
本発明は上記の問題点を解消して、構造が簡単コンパクトで、メンテナンス性に優れ、設置場所に制約がなく、効率よく冷却する冷却装置を提供する。
【０００７】
【課題を解決するための手段】
本発明の要旨は、被冷却流体が流動し被冷却水の熱を放熱するラジエターと、前記ラジエターに送風するファンとを備え、前記ファンによって外気を取り込み被冷却水を冷却する空冷式冷却塔と、蒸発器、圧縮機、コンデンサー（凝縮器）、膨張弁が連結されて冷媒を循環させるチラーと、前記ラジエターを通過した被冷却水を前記蒸発器に導いて前記蒸発器を通過させる管路とを備え、前記蒸発器に導かれた被冷却水は、前記蒸発器を通過して前記冷媒と熱交換され冷却される冷却装置であって、前記ラジエターは被冷却水が流動する伝熱パイプとその外周に設けられたフィンで形成されて前記冷却装置の外側部に設けられ、前記コンデンサーは冷媒が流動する伝熱パイプとその外周に設けられたフィンで形成されて前記ラジエターの内側に配置され、前記ファンによって取り込まれた外気は、先ず前記ラジエターの被冷却水を冷却し、次いで前記コンデンサーの冷媒を冷却することを特徴とする冷却装置である。
【０００８】
上記において、前記チラーは前記冷却塔の下部に設けられたことを特徴とする。また上記において、冷却すべき機器から戻る被冷却水の温度を測定する温度計と、外気温度を測定する温度計と、前記被冷却水が冷却塔のラジエターを通過して蒸発器へ送られる管路と、前記ラジエターを通過せずに蒸発器へ送られるバイパス管路と、該バイパス管路と前記冷却塔のラジエターへ通過する管路との切り替え手段とを設け、前記被冷却流体の温度が外気温度より高いときはバイパス管路を閉とし、前記被冷却流体の温度が外気温度より低いときはバイパス管路を開とする前記切り替え手段の制御が行われることを特徴とする冷却装置である。
【０００９】
更に上記において、前記水用ラジエターを通過した被冷却水の温度を測定する温度計を設け、冷却装置の運転が停止中に前記被冷却水の温度がある設定温度より低いときは循環ポンプが起動し冷却装置内を被冷却水が循環することを特徴とする冷却装置である。
【００１０】
【作用】
本発明は上記の構成であって、被冷却水が通過する伝熱パイプにフィンを設けた水用ラジエターと、チラーの冷媒を冷却する伝熱パイプにフィンを設けたコンデンサーとを冷却塔内に設け、冷却塔内では水を使わずにファンの送風のみによって冷却する。このため散水装置や水の配管が不要で、設置場所に水供給源の制約がない。また伝熱パイプに散水中のカルシュウム等が析出することによる冷却効率の低下やメンテナンス性の問題もない。
【００１１】
特に本発明はファンで冷却する冷却塔内にフィンを設けた水用ラジエターを外側に設け、その内側にフィンを設けた冷媒冷却用コンデンサーを設置しているので、送風による外気が先に被冷却水を冷やし、次いで温度の高いコンデンサーが冷やされる。このため水用ラジエターでの放熱を最大限に利用し、ラジエターとコンデンサーを１つの熱交換器としてみた時の放熱も効率の良いものとなり、熱交換器に送風される外気とは対向流になってラジエターとコンデンサーとは効率よく冷やされる。また２層に設けてあるので冷却塔内での面積をとらず、コンパクトな冷却装置とすることができる。
このフィンを設けたラジエターやコンデンサーに散水装置で散水すると伝熱パイプやフィンの表面に散水中のカルシュウムが付着し易く、また析出物を取り除くメンテナンスが行えず、フィン付きの熱交換器は従来の散水装置付き冷却塔には使用できなかった。
【００１２】
更に冷却装置の運転が停止中に前記被冷却水の温度がある設定温度より低いときは循環ポンプが起動して冷却装置内を被冷却水が循環するため、冬季の運転停止中に生じる被冷却水の凍結が防止され、冷却装置内配管の破損を防止する。
【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は本発明の一実施例を示す冷却装置の系統図である。冷却装置４０は上部が冷却塔５０となっており、下部にチラー６０を設けてある。冷却塔５０は上部にファン５１とモータ５２よりなる送風装置を有し、側部に水用ラジエター５５を設け、その内側にチラー６０のフィン付きコンデンサー６３を配置してある。ファン５１によって吸気し、水用ラジエター５５とフィン付コンデンサー６３に送風し、上部に排気する。チラー６０は２系統設けてあり、各々圧縮機６１とコンデンサー６３と膨張弁６５と蒸発器６６とを有し、各チラー６０内には冷媒が循環しており、冷媒は圧縮機６１において圧縮され、管路６２を通って冷却塔５０内に配置されたコンデンサー６３において液化して放熱され、管路６４を介して膨張弁６５を通過して蒸発器６６内で蒸発して吸熱するサイクルを繰り返す。
【００１４】
被冷却水はポンプＰによって冷却すべき機器Ａと冷却装置４０を循環しており、冷却すべき機器Ａから戻った被冷却水は、管路５３から第１の弁７１を介して管路５４を通過して冷却塔内の水用ラジエター５５で冷やされ、管路５６を経由して蒸発器６６に導かれ、出口管路５７を通って冷却すべき機器Ａに送り出される。更に冷却すべき機器Ａからの戻り管路５３にはバイパス管路５８が設けられており、水用ラジエター５５の下流側管路５６に接続している。バイパス管路５８には第２の弁７２が設けられており、弁７１と７２によって管路５４とバイパス管路５８への切り替え手段７０となっている。
尚本実施例では、チラー６０は２台の圧縮機を有す２系統に設けたが、１系統、又は４系統に設けてもよい。
【００１５】
Ｔ１，Ｔ２，Ｔ３，Ｔ４は温度計であって、Ｔ１は冷却装置から送り出される出口管路５７の被冷却水温度を、Ｔ２は冷却すべき機器Ａから戻ってくる戻り管路５３の被冷却水温度を測定している。５３は外気温度を測定する温度計、Ｔ４は水用ラジエターを通過した後の蒸発器６６へ導く管路５６の被冷却水の温度を測定している。
しかして本実施例の冷却装置では、出口管路５７に取り付けた温度計Ｔ１の温度が設定温度より高くなったときは、まずファン５１の送風量を増し、なおも温度計Ｔ１の温度が設定温度範囲よりも高くなったときにはチラー６０の圧縮機の運転台数制御を行う。また温度計Ｔ１の温度が設定温度範囲より低くなったときは、上記とは逆にまず圧縮機の運転台数が順次停止され、なおも温度計Ｔ１の温度が設定温度範囲よりも低くなったときはファン５１の送風量を減少する制御が行われる。
【００１６】
また戻り管路の温度Ｔ２と外気温度Ｔ３を比較しており、外気温度Ｔ３よりも戻り管路の温度Ｔ２が高いときはバイパス管路５８を閉じて水用ラジエターへの管路５４が開く様に弁７１と７２の切り替えが行われ、被冷却水は冷却塔のラジエター５５で冷やされ更に蒸発器６６を通過して冷却される。
反対に外気温度Ｔ３よりも戻り管路の温度Ｔ２が低いときはバイパス回路５８が開きラジエターへの管路５４が閉じる切り替え手段の制御が行われ、被冷却水はラジエター５５を通過せず、蒸発器６６でのみ冷却される。このため夏季高温期での被冷却水が冷却塔を通過して加熱される無駄が生じなく、効率よく蒸発器６６で冷却される。
【００１７】
また水用ラジエター５４を通過して蒸発器６６へ導く管路５６の温度Ｔ４を測定しており、冬季等で冷却装置４０の運転が停止中においても、Ｔ４が設定した温度、例えば５℃以下になったら循環ポンプＰを起動させる信号を出し、被冷却水を冷却装置内で循環させ、凍結を防止するようにしている。
【００１８】
【発明の効果】
以上のごとく本発明の冷却装置は、冷却塔内に水用ラジエターを外側にチラーのコンデンサーを内側に配置して２層に組み合わせて送風する冷却塔としてあるので、冷却塔内では送風のみによって効率よく被冷却水とチラーの冷媒を冷却し、また被冷却水の出口温度と戻り温度及び外気温度によって被冷却水を冷却塔とチラーで効率よく冷却制御し、更に冬季等冷却装置が停止中でも凍結防止を行う優れたものである。
【図面の簡単な説明】
【図１】本発明の一実施例を示す冷却装置の系統図である。
【図２】従来技術を示す冷却装置の平面図である。
【符号の説明】
４０冷却装置
５０冷却塔
５１ファン
５３戻り管路
５４水用ラジエターへの管路
５５水用ラジエター
５６水用ラジエターから蒸発器への管路
５７出口管路
５８バイパス管路
６０チラー
６１圧縮機
６２圧縮機からコンデンサーへの管路
６３フィン付きコンデンサー
６４コンデンサーから蒸発器への管路
６５膨張弁
６６蒸発器
６８蒸発器から圧縮機への管路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooling device that cools the water to be cooled returning from the device to be cooled and then sends it to the device, and more particularly relates to a cooling device that efficiently cools to a low temperature range of about 18 ° C. to 29 ° C.
[0002]
[Prior art]
Conventionally, as a cooling device that cools to medium and low temperatures with minimum energy, there is one disclosed in Japanese Utility Model Publication No. 61-84480 according to the invention of the present applicant.
As shown in FIG. 2, this is a cooling device in which an evaporative cooling tower is integrated in the upper part and a chiller is integrated in the lower part. A plurality of layers of heat transfer pipes 2 are arranged inside the cooling tower, and the water to be cooled enters the heat transfer pipe 2 from the inlet header 3, exits to the outlet header 4, and passes through the lower chiller evaporator 15. It is sent to the equipment to be cooled in use for cooling.
[0003]
A water receiving tank 6 is provided at the lower part of the heat transfer pipe 2, and water is always held. This water is sent to the water spray layer 5 through the pumping pipe 8 by the pump 7, and is sprayed to the heat transfer pipe 2 through a large number of small holes opened in the bottom surface of the water spray layer 5. The water sprayed falls in order to the lower heat transfer pipe while forming a water film on the surface of the heat transfer pipe. During this time, the heat transfer pipe is cooled by the latent heat of evaporation of the water sprayed by the fan 10, and the heat transfer pipe is cooled. The water passing through the inside is cooled.
[0004]
When the upper cooling tower alone does not cool enough in summer, the lower chiller is also operated, cooled by the cooling tower, and further cooled by the lower chiller. When cooling to the target temperature is possible only with the upper cooling tower, the operation of the chiller is stopped, and the cooling capacity of the upper cooling tower is performed by adjusting the amount of water sprayed by the watering device and the air flow rate of the fan 10. Further, the pumping amount of the pump 7 for feeding the water in the water receiving tank to the sprinkling layer 5 is also adjusted by the outside air temperature, and the watering is stopped when the outside air temperature in winter is low.
[0005]
[Problems to be solved by the invention]
The cooling device described above is an evaporative cooling tower, and water is sprinkled on a heat transfer pipe by a water spray device, and this is cooled with latent heat of evaporation by blowing air from a fan, so that it has excellent cooling efficiency. However, as mentioned above, the evaporative cooling tower has a complicated structure that requires devices such as water sprinklers, water receiving tanks, and pumps, and since it requires water for sprinkling, it secures water supply sources such as groundwater. There was a problem with the installation location. In addition, when the quality of the makeup water is poor, or in places where the installation environment containing dust, smoke, salt, etc. is poor, the quality of the water sprayed is contaminated, and this is sprinkled in the cooling tower, causing corrosion and scale. .
[0006]
Furthermore, when the amount of water sprayed to the heat transfer pipe of the water spray device is discontinuous as described above, calcium and magnesium in the water spray deposit on the surface of the heat transfer pipe and adhere to dryness, and the heat transfer of the heat transfer pipe deteriorates. There was a problem to do. For this reason, it was necessary to periodically remove the deposit on the surface of the heat transfer pipe, and there was a problem in maintainability. In addition, when the water to be cooled and the condenser returned from the equipment to be cooled with the sprayed water in the cooling tower are sprayed in common, the sprayed water temperature rises due to heat dissipation from the condenser, and the cooling performance of the cooled water is fully demonstrated. There was no problem.
The present invention solves the above problems, and provides a cooling device that is simple and compact in structure, excellent in maintainability, has no restrictions on installation location, and efficiently cools.
[0007]
[Means for Solving the Problems]
The gist of the present invention is that it comprises a radiator in which a fluid to be cooled flows and dissipates heat of the water to be cooled, and a fan that blows air to the radiator, and an air-cooled cooling tower that cools the water to be cooled by taking in outside air by the fan. An evaporator, a compressor, a condenser (condenser), an expansion valve connected to each other, and a chiller that circulates the refrigerant, and a pipe that guides the water to be cooled that has passed through the radiator to the evaporator and passes through the evaporator. The cooling water led to the evaporator is a cooling device that passes through the evaporator and is cooled by heat exchange with the refrigerant, and the radiator includes a heat transfer pipe through which the cooling water flows. Formed with fins provided on the outer periphery thereof and provided on the outer side of the cooling device, the condenser is formed with heat transfer pipes through which the refrigerant flows and fins provided on the outer periphery thereof, and inside the radiator. Is arranged, the outside air taken in by the fan, the cooled water of the radiator is cooled first, and then a cooling apparatus characterized by cooling the refrigerant in the condenser.
[0008]
In the above, the chiller is provided in a lower part of the cooling tower. In the above, a thermometer for measuring the temperature of the cooled water returning from the device to be cooled, a thermometer for measuring the outside air temperature, and a pipe through which the cooled water passes through the radiator of the cooling tower and is sent to the evaporator A bypass pipe that is sent to the evaporator without passing through the radiator, and a switching means for switching between the bypass pipe and the pipe that passes to the radiator of the cooling tower, and the temperature of the fluid to be cooled is When the temperature of the fluid to be cooled is lower than the outside air temperature, the switching unit is closed, and when the temperature of the fluid to be cooled is lower than the outside air temperature, the switching unit is controlled. .
[0009]
Further, in the above, a thermometer for measuring the temperature of the cooled water that has passed through the water radiator is provided, and the circulating pump is activated when the temperature of the cooled water is lower than a set temperature while the cooling device is stopped. The cooling device is characterized in that the water to be cooled circulates in the cooling device.
[0010]
[Action]
The present invention is configured as described above, and includes a water radiator in which fins are provided in a heat transfer pipe through which water to be cooled passes, and a condenser in which fins are provided in a heat transfer pipe for cooling a chiller refrigerant in a cooling tower. In the cooling tower, it is cooled only by the blow of fans without using water. For this reason, a watering device and water piping are unnecessary, and there is no restriction of a water supply source in an installation place. In addition, there is no problem in cooling efficiency and maintenance due to precipitation of calcium in the water spray pipe.
[0011]
In particular, in the present invention, a water radiator having fins is provided outside in a cooling tower cooled by a fan, and a refrigerant cooling condenser having fins is provided on the inside thereof. The water is cooled and then the hot condenser is cooled. For this reason, the heat radiation from the water radiator is used to the maximum, and when the radiator and condenser are viewed as a single heat exchanger, the heat radiation is also efficient, and the outside air blown to the heat exchanger is counterflow. The radiator and condenser are cooled efficiently. Moreover, since it is provided in two layers, it does not take up the area in a cooling tower, and it can be set as a compact cooling device.
If water is sprayed to the radiator or condenser with fins, the calcium in the water sprinkles easily adheres to the surface of the heat transfer pipes and fins, and maintenance to remove the deposits cannot be performed. It could not be used for a cooling tower with a sprinkler.
[0012]
Furthermore, when the temperature of the cooled water is lower than a set temperature while the cooling device is stopped, the circulating pump is activated and the cooling water circulates in the cooling device. Freezing of water is prevented, and piping in the cooling device is prevented from being damaged.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of a cooling apparatus showing an embodiment of the present invention. The upper part of the cooling device 40 is a cooling tower 50, and a chiller 60 is provided at the lower part. The cooling tower 50 has an air blower composed of a fan 51 and a motor 52 at an upper portion, a water radiator 55 is provided at a side portion, and a finned condenser 63 of a chiller 60 is disposed inside thereof. The air is taken in by the fan 51, blown to the water radiator 55 and the finned condenser 63, and exhausted to the upper part. The chiller 60 is provided with two systems, each having a compressor 61, a condenser 63 , an expansion valve 65, and an evaporator 66. A refrigerant circulates in each chiller 60, and the refrigerant is compressed by the compressor 61. Then, the heat is liquefied and dissipated in the condenser 63 disposed in the cooling tower 50 through the pipe line 62, passes through the expansion valve 65 through the pipe line 64, and evaporates in the evaporator 66 to absorb heat. .
[0014]
The water to be cooled circulates between the device A to be cooled by the pump P and the cooling device 40, and the water to be cooled that has returned from the device A to be cooled passes through the pipe 53 through the first valve 71 to the pipe 54. And is cooled by the water radiator 55 in the cooling tower, led to the evaporator 66 through the pipe 56, and sent to the device A to be cooled through the outlet pipe 57. Further, a bypass pipeline 58 is provided in the return pipeline 53 from the device A to be cooled, and is connected to the downstream pipeline 56 of the water radiator 55. A bypass valve 58 is provided with a second valve 72, and the valves 71 and 72 serve as a switching means 70 between the pipe 54 and the bypass pipe 58.
In the present embodiment, the chiller 60 is provided in two systems having two compressors, but may be provided in one system or four systems.
[0015]
T1, T2, T3, T4 are thermometers, T1 is the temperature of the water to be cooled in the outlet line 57 sent out from the cooling device, and T2 is the temperature to be cooled in the return line 53 returning from the device A to be cooled. The water temperature is being measured. 53 is a thermometer for measuring the outside air temperature, and T4 is measuring the temperature of the water to be cooled in the pipe 56 led to the evaporator 66 after passing through the water radiator.
Therefore, in the cooling device of the present embodiment, when the temperature of the thermometer T1 attached to the outlet pipe 57 becomes higher than the set temperature, first the air flow rate of the fan 51 is increased, and the temperature of the thermometer T1 is still set. When the temperature is higher than the temperature range, the number of operating compressors of the chiller 60 is controlled. Also, when the temperature of the thermometer T1 is lower than the set temperature range, the number of compressors operating is first stopped sequentially, and the temperature of the thermometer T1 is still lower than the set temperature range. Is controlled to reduce the amount of air blown by the fan 51.
[0016]
Further, the return pipe temperature T2 and the outside air temperature T3 are compared. When the return pipe temperature T2 is higher than the outside air temperature T3, the bypass pipe 58 is closed and the pipe 54 to the water radiator is opened. Then, the valves 71 and 72 are switched, and the water to be cooled is cooled by the radiator 55 of the cooling tower and further passed through the evaporator 66 and cooled.
On the contrary, when the return pipe temperature T2 is lower than the outside air temperature T3, the switching means for opening the bypass circuit 58 and closing the pipe 54 to the radiator is controlled, and the water to be cooled does not pass through the radiator 55 and evaporates. Cooled only in the vessel 66. For this reason, the water to be cooled in the summer high temperature period is not wastefully heated by passing through the cooling tower, and is efficiently cooled by the evaporator 66.
[0017]
Further, the temperature T4 of the pipe 56 that passes through the water radiator 54 and leads to the evaporator 66 is measured. Even when the operation of the cooling device 40 is stopped in winter, the temperature set by T4, for example, 5 ° C. or less. At this time, a signal for starting the circulation pump P is issued, and the water to be cooled is circulated in the cooling device to prevent freezing.
[0018]
【The invention's effect】
As described above, the cooling device of the present invention is a cooling tower in which a water radiator is disposed inside the cooling tower and a chiller condenser is disposed on the inner side to blow in combination with two layers. Cooling water and chiller refrigerant are cooled well, cooling water is efficiently controlled by the cooling tower and chiller according to the outlet temperature, return temperature, and outside air temperature of the cooling water. It is an excellent thing to prevent.
[Brief description of the drawings]
FIG. 1 is a system diagram of a cooling device according to an embodiment of the present invention.
FIG. 2 is a plan view of a cooling device showing the prior art.
[Explanation of symbols]
40 Cooling device 50 Cooling tower 51 Fan 53 Return pipe 54 Pipe to water radiator 55 Water radiator 56 Pipe from water radiator to evaporator 57 Outlet pipe 58 Bypass pipe 60 Chiller 61 Compressor 62 Compression Pipe from condenser to condenser 63 Condenser with fin 64 Pipe from condenser to evaporator 65 Expansion valve 66 Evaporator 68 Pipe from evaporator to compressor

Claims

被冷却水が流動し被冷却水の熱を放熱するラジエターと、前記ラジエターに送風するファンとを備え、前記ファンによって外気を取り込み被冷却水を冷却する空冷式冷却塔と、
蒸発器、圧縮機、コンデンサー（凝縮器）、膨張弁が連結されて冷媒を循環させるチラーと、
前記ラジエターを通過した被冷却水を前記蒸発器に導いて前記蒸発器を通過させる管路とを備え、
前記蒸発器に導かれた被冷却水は、前記蒸発器を通過して前記冷媒と熱交換され冷却される冷却装置であって、
前記ラジエターは被冷却水が流動する伝熱パイプとその外周に設けられたフィンで形成されて前記冷却装置の外側部に設けられ、前記コンデンサーは冷媒が流動する伝熱パイプとその外周に設けられたフィンで形成されて前記ラジエターの内側に配置され、
前記ファンによって取り込まれた外気は、先ず前記ラジエターを流れる被冷却水を冷却し、次いで前記コンデンサーを流れる冷媒を冷却することを特徴とする冷却装置。A radiator that flows the water to be cooled and dissipates the heat of the water to be cooled; and a fan that blows air to the radiator; an air-cooled cooling tower that takes outside air by the fan and cools the water to be cooled;
An evaporator, a compressor, a condenser (condenser), an expansion valve connected to circulate the refrigerant ,
A pipe that guides the water to be cooled that has passed through the radiator to the evaporator and passes the evaporator;
The cooling water guided to the evaporator is a cooling device that passes through the evaporator and is cooled by heat exchange with the refrigerant ,
The radiator is formed of a heat transfer pipe through which water to be cooled flows and fins provided on the outer periphery thereof, and is provided on the outer side of the cooling device. was formed in the fin is disposed inside the radiator,
The cooling apparatus characterized in that the outside air taken in by the fan cools the water to be cooled flowing through the radiator first, and then cools the refrigerant flowing through the condenser.

前記チラーの圧縮機、および蒸発器は前記冷却塔の下部に設けられたことを特徴とする請求項１記載の冷却装置。The cooling device according to claim 1, wherein the compressor and the evaporator of the chiller are provided in a lower part of the cooling tower.

冷却すべき機器から戻る被冷却水の温度を測定する温度計と、
外気温度を測定する温度計と、
前記被冷却水が前記ラジエターを通過せずに蒸発器へ送られるバイパス管路と、
該バイパス管路と前記ラジエターへ通過する管路との切り替え手段とを設け、
前記被冷却水の温度が外気温度より高いときはバイパス管路を閉とし、前記被冷却水の温度が外気温度より低いときはバイパス管路を開とする前記切り替え手段の制御が行われることを特徴とする請求項１又は請求項２に記載の冷却装置。A thermometer for measuring the temperature of the cooling water returning from the device to be cooled;
A thermometer for measuring the outside air temperature;
A bypass line through which the water to be cooled is sent to the evaporator without passing through the radiator;
A switching means for switching between the bypass pipe and the pipe passing to the radiator;
When the temperature of the water to be cooled is higher than the outside air temperature, the bypass means is closed, and when the temperature of the water to be cooled is lower than the outside air temperature, the switching means is controlled to open. The cooling device according to claim 1 or 2, wherein the cooling device is characterized.

前記ラジエターを通過した被冷却水の温度を測定する温度計を設け、冷却装置の運転が停止中に前記被冷却水の温度がある設定温度より低いときは循環ポンプが起動し冷却装置内を被冷却水が循環することを特徴とする請求項１〜請求項３のいずれかに記載の冷却装置。A thermometer is provided to measure the temperature of the water to be cooled that has passed through the radiator. When the temperature of the water to be cooled is lower than a set temperature while the cooling device is stopped, the circulation pump is activated and the inside of the cooling device is covered. The cooling device according to any one of claims 1 to 3, wherein cooling water circulates.