JP2004293894A - Cooling system for communication base station - Google Patents

Cooling system for communication base station Download PDF

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Publication number
JP2004293894A
JP2004293894A JP2003085747A JP2003085747A JP2004293894A JP 2004293894 A JP2004293894 A JP 2004293894A JP 2003085747 A JP2003085747 A JP 2003085747A JP 2003085747 A JP2003085747 A JP 2003085747A JP 2004293894 A JP2004293894 A JP 2004293894A
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Japan
Prior art keywords
cooling system
cooling
core
water
cooled
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JP2003085747A
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Japanese (ja)
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JP4161764B2 (en
Inventor
Hiroyuki Okumura
弘幸 奥村
Koji Kishita
浩次 樹下
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling system for a communication base station capable of reducing the noise by reducing the airflow at an outdoor side. <P>SOLUTION: This cooling system 10 for a communication base station is composed of a water-cooled system part 11 for cooling a high-temperature side communication instrument 2 and an elullient cooling system part 12 for cooling a low temperature-side communication instrument 3. A radiator 11b of the water-cooled system part 11 and a core (outdoor core) 12c of the elullient cooling system part 12 are respectively mounted outdoors, and the cooling water flowing in the radiator 11b and the refrigerant flowing in the core (outdoor core) 12c are cooled by the air blasted from an outdoor fan 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、携帯電話などの通信基地局用の冷却システムに関する。
【０００２】
【従来の技術】
従来、通信基地局用の熱交換器として、図２に示すような、内気と外気の対向流によって排熱を行なう熱交換器５０が知られている。この熱交換器５０は、内部が防水、防塵の見地から室内側と室外側とに分離独立した構造となっており、通信機（比較的高温な約８０°Ｃにまで発熱するアンプなどからなる高温側通信機２、及び、高温側通信機の発熱温度に比べ低温ではあるが約４０°Ｃにまで発熱するモデムなどからなる低温側通信機３）の発熱によって高温になった室内空気を室内ファン５１によって取り込み、フィン５２に熱を伝えるとともに、室内空気よりも低温の外気を室外ファン５３によって取り込み、フィン５４に送風することによって、室内側のフィン５２の熱を奪い、冷却された空気を室内に吹出すよう構成される。なお、通信基地局用冷却システムの先行技術には、特許文献１などがある。
【０００３】
【特許文献１】
特開２００１−４１５０３公報
【０００４】
【発明が解決しようとする課題】
しかし、上記のような従来の熱交換器は、夏の日中など外気温の高い時間帯では、冷却性能を確保するために外気を大風量で流す必要があり、ファンモータの回転音、風切音による騒音が大きいという問題があった。
【０００５】
本発明は、上記のような従来技術の問題点を解決し、室外側の風量を抑え騒音の低減を図ることができる通信基地局用冷却システムを提供することを目的とする。
【０００６】
【課題を解決するための手段】
請求項１に係る通信基地局用冷却システムは、高温側通信機を冷却する水冷式システム部と低温側通信機を冷却する沸騰冷却式システム部とからなる通信基地局用冷却システムであって、前記水冷式システム部のラジエタ及び前記沸騰冷却式システム部のコアをそれぞれ室外に配置するとともに、前記ラジエタ内を流れる冷却水及び前記コア内を流れる冷媒を室外ファンの送風によって冷却するよう構成されることを特徴とする。
【０００７】
請求項１に係る通信基地局用冷却システムによると、水冷式システム部と沸騰冷却式システム部とを組み合わせた新冷却方式を採用し、水冷式システム部のラジエタ内を流れる冷却水及び沸騰冷却式システム部のコア内を流れる冷媒を室外ファンの送風によって冷却するようにしたため、外気温の高い時間帯に大風量の外気を流さなくても室内を十分に冷却することが可能となり、したがって、室外側の風量を抑え騒音の低減を図ることができる。
【０００８】
請求項２に係る通信基地局用冷却システムは、請求項１において、前記コアから前記ラジエタの順に送風されるよう、前記ラジエタ、前記コア、前記室外ファンが配置されることを特徴とする。
【０００９】
請求項２に係る通信基地局用冷却システムによると、ラジエタの温度とコアの温度とを比べたとき、コアの方が低温となるため、上記のように先にコア、その後ラジエタに風が流れるような位置関係でラジエタ、コア、室外ファンを配置する。これにより、低温側から高温側に向かって外気が流れるようになり、このため、コア内を流れる冷媒及びラジエタ内を流れる冷却水を高い温度効率で冷却することができる。
【００１０】
請求項３に係る通信基地局用冷却システムは、請求項１において、前記水冷式システム部は、前記高温側通信機の基板に密着された水冷ユニットを有することを特徴とする。
【００１１】
請求項３に係る通信基地局用冷却システムによると、水冷ユニットを基板に密着させたため、基板を直に冷却することができ、高温側通信機に対して十分な冷却効果が得られる。
【００１２】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【００１３】
図１は、本発明の一実施形態に係る通信基地局用冷却システムの構成図を示す。
【００１４】
図１において、通信基地局１の室内には、比較的高温な約８０°Ｃにまで発熱するアンプなどからなる高温側通信機２、及び、高温側通信機２の発熱温度に比べ低温ではあるが約４０°Ｃにまで発熱するモデムなどからなる低温側通信機３が設置されている。
【００１５】
通信基地局用冷却システム１０は、高温側通信機２に対する水冷式システム部１１と、低温側通信機３に対する沸騰冷却式システム部１２とを組み合わせて構成される。
【００１６】
水冷式システム部１１は、高温側通信機２の基板２ａに密着された水冷ユニット１１ａと、室外に配置されたラジエタ１１ｂと、ラジエタ１１ｂに送風する室外ファン１３と、水冷ユニット１１ａとラジエタ１１ｂとの間をそれぞれ接続する行配管１１ｃ及び戻配管１１ｄと、水冷ユニット１１ａ、行配管１１ｃ、ラジエタ１１ｂ及び戻配管１１ｄによって形成される閉流路に充填された冷却水と、閉流路内で冷却水を循環させるポンプ１１ｅとにより構成される。
【００１７】
沸騰冷却式システム部１２は、低温側通信機３の近傍に配置された室内コア１２ａと、室内コア１２ａに送風する室内ファン１２ｂと、室外に配置された室外コア１２ｃと、室外コア１２ｃに送風する室外ファン１３（上記水冷式システム部１１のファンを兼用している。）と、室内コア１２ａと室外コア１２ｃとの間をそれぞれ接続する行配管１２ｄ及び戻配管１２ｅと、室内コア１２ａ、行配管１２ｄ、室外コア１２ｃ及び戻配管１２ｅによって形成される閉流路に充填された冷媒（例えばフロン）とにより構成される。
【００１８】
室外において、室外ファン１３、ラジエタ１１ｂ、室外コア１２ｃの配置は、室外の最も外側が室外ファン１３、室外ファン１３の隣が室外コア１２ｃ、室外の最も内側がラジエタ１１ｂである。
【００１９】
次に、水冷式システム部１１及び沸騰冷却式システム部１２の各動作を順に説明する。
【００２０】
水冷式システム部１１において、ポンプ１１ｅによって閉流路を循環する冷却水のうち水冷ユニット１１ａ内の低温の冷却水は、高温側通信機２から熱を奪うことによって高温側通信機２を冷却するとともに発熱する。発熱した冷却水（高温の冷却水）は行配管１１ｃを経てラジエタ１１ｂへ送られる。ラジエタ１１ｂに送られてきた冷却水は、室外ファン１３により送風されてくる低温の外気により冷却される。冷却され低温となった冷却水は、戻配管１１ｄを経て水冷ユニット１１ａに戻り、再び高温側通信機２から熱を奪い、高温側通信機２を冷却するとともに発熱する。以後、上記のような動作が繰り返され、高温側通信機２が冷却される。
【００２１】
沸騰冷却式システム部１２において、室内ファン１２ｂは、低温側通信機３の発熱による高温の内気を室内コア１２ａに送風する。室内コア１２ａ内の液化している冷媒は、高温の内気から熱を奪うことによって内気を冷却するとともに沸騰し蒸気となる。この内気の冷却によって低温側通信機３は冷却される。蒸気となった冷媒は室内コア１２ａ内を上昇し行配管１２ｄを経て室外コア１２ｃへ移動する。室外コア１２ｃに移動した冷媒は、室外ファン１３によって送風されてくる低温の外気により冷却され、液化する。液化した冷媒は、戻配管１２ｅを経て室内コア１２ａに戻り、再び内気から熱を奪い低温側通信機３を冷却するとともに沸騰し蒸気となる。以後、上記のような動作が繰り返され、低温側通信機３が冷却される。
【００２２】
以上説明したように、本実施形態に係る通信基地局用冷却システム１０は、高温側通信機２を冷却する水冷式システム部１１と低温側通信機３を冷却する沸騰冷却式システム部１２とからなる通信基地局用冷却システムであって、水冷式システム部１１のラジエタ１１ｂ及び沸騰冷却式システム部１２のコア（室外コア）１２ｃをそれぞれ室外に配置するとともに、ラジエタ１１ｂ内を流れる冷却水及びコア（室外コア）１２ｃ内を流れる冷媒を室外ファン１３の送風によって冷却するよう構成される。
【００２３】
この通信基地局用冷却システム１０によると、水冷式システム部１１と沸騰冷却式システム部１２とを組み合わせた新冷却方式を採用し、水冷式システム部１１のラジエタ１１ｂ内を流れる冷却水及び沸騰冷却式システム部１２のコア１２ｃ内を流れる冷媒を室外ファン１３の送風によって冷却するようにしたため、外気温の高い時間帯に大風量の外気を流さなくても室内を十分に冷却することが可能となり、したがって、室外側の風量を抑え騒音の低減を図ることができる。
【００２４】
また、ラジエタ１１ｂ、コア１２ｃの配置は、ラジエタ１１ｂの温度とコア１２ｃの温度とを比べたとき、コア１２ｃの方が低温となるため、先にコア１２ｃ、その後ラジエタ１１ｂに風が流れるようにラジエタ１１ｂ、コア１２ｃ、室外ファン１３を配置する。これにより、低温側から高温側に向かって外気が流れるようになり、このため、コア１２ｃ内を流れる冷媒及びラジエタ１１ｂ内を流れる冷却水を高い温度効率で冷却することができる。図１の他には、図３，４，５，６，７のような配置が考えられる。
【００２５】
また、水冷式システム部１１は、高温側通信機２の基板２ａに密着された水冷ユニット１１ａを有する。このように水冷ユニット１１ａを基板２ａに密着させたため、基板２ａを直に冷却することができ、高温側通信機２に対して十分な冷却効果が得られる。
【００２６】
なお、室外ファン１３は、軸流式プロペラファン、シロッコファン、ターボファンなどいずれのファンであってもよい。
【００２７】
【発明の効果】
本発明の通信基地局用冷却システムによると、室外側の風量を抑え騒音の低減を図ることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る通信基地局用冷却システムの構成図である。
【図２】従来の通信基地局用冷却システムの構成図である。
【図３】本発明の他の実施形態に係る通信基地局用冷却システムの構成図である。
【図４】本発明のさらに他の実施形態に係る通信基地局用冷却システムの構成図である。
【図５】本発明のさらに他の実施形態に係る通信基地局用冷却システムの構成図である。
【図６】本発明のさらに他の実施形態に係る通信基地局用冷却システムの構成図である。
【図７】本発明のさらに他の実施形態に係る通信基地局用冷却システムの構成図である。
【符号の説明】
１ 通信基地局
２ 高温側通信機
２ａ 基板
３ 低温側通信機
１０ 通信基地局用冷却システム
１１ 水冷式システム部
１１ａ 冷却ユニット
１１ｂ ラジエタ
１２ 沸騰冷却式システム部
１２ｃ コア（室外コア）
１３ 室外ファン[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cooling system for a communication base station such as a mobile phone.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a heat exchanger for a communication base station, a heat exchanger 50 that discharges heat by a counterflow of inside air and outside air as shown in FIG. 2 is known. The heat exchanger 50 has a structure in which the inside is separated into an indoor side and an outdoor side from the viewpoint of waterproof and dustproof, and includes a communication device (an amplifier which generates heat up to a relatively high temperature of about 80 ° C.). The high-temperature side communication device 2 and the low-temperature side communication device 3 comprising a modem or the like which is lower in temperature than the high-temperature side communication device but generates heat up to about 40 ° C. The air is taken in by the fan 51 and heat is transmitted to the fins 52. At the same time, the outside air having a lower temperature than the indoor air is taken in by the outdoor fan 53 and blown to the fins 54, so that the heat of the fins 52 on the indoor side is taken away, and It is configured to blow into the room. In addition, as a prior art of the cooling system for communication base stations, there is Patent Document 1 and the like.
[0003]
[Patent Document 1]
JP 2001-41503 A
[Problems to be solved by the invention]
However, the conventional heat exchanger as described above requires a large amount of outside air to ensure cooling performance during a time period when the outside air temperature is high, such as during the summer, and the rotation noise of the fan motor, There was a problem that the noise due to the noise was loud.
[0005]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling system for a communication base station capable of solving the above-mentioned problems of the conventional technology and suppressing the airflow outside the room to reduce noise.
[0006]
[Means for Solving the Problems]
The communication base station cooling system according to claim 1 is a communication base station cooling system including a water-cooled system unit that cools a high-temperature side communication device and a boiling cooling system unit that cools a low-temperature side communication device, The radiator of the water-cooled system unit and the core of the boiling-cooling system unit are respectively arranged outside the room, and the cooling water flowing in the radiator and the refrigerant flowing in the core are cooled by blowing of an outdoor fan. It is characterized by the following.
[0007]
According to the cooling system for a communication base station according to claim 1, a new cooling system in which a water-cooled system unit and a boiling-cooled system unit are combined is adopted, and the cooling water flowing in the radiator of the water-cooled system unit and the boiling cooling system. Since the cooling medium flowing in the core of the system unit is cooled by the blowing of the outdoor fan, it is possible to sufficiently cool the room without flowing a large amount of outside air during a time when the outside air temperature is high. The air volume on the outside can be suppressed and noise can be reduced.
[0008]
The cooling system for a communication base station according to a second aspect is characterized in that, in the first aspect, the radiator, the core, and the outdoor fan are arranged so that air is sent from the core in the order of the radiator.
[0009]
According to the cooling system for a communication base station according to claim 2, when the temperature of the radiator and the temperature of the core are compared, the temperature of the core is lower, so that the wind flows to the core first and then to the radiator as described above. The radiator, core, and outdoor fan are arranged in such a positional relationship. This allows the outside air to flow from the low-temperature side to the high-temperature side, so that the refrigerant flowing in the core and the cooling water flowing in the radiator can be cooled with high temperature efficiency.
[0010]
The cooling system for a communication base station according to claim 3 is characterized in that, in claim 1, the water-cooled system unit has a water-cooled unit closely attached to a substrate of the high-temperature side communication device.
[0011]
According to the cooling system for a communication base station according to the third aspect, since the water-cooling unit is closely attached to the substrate, the substrate can be cooled directly, and a sufficient cooling effect can be obtained for the high-temperature side communication device.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 shows a configuration diagram of a communication base station cooling system according to an embodiment of the present invention.
[0014]
In FIG. 1, the inside of a communication base station 1 has a relatively high temperature, such as an amplifier that generates heat up to about 80 ° C., and a high-temperature side communication device 2 and a low temperature as compared with the heat generation temperature of the high-temperature side communication device 2 A low-temperature side communication device 3 including a modem that generates heat up to about 40 ° C. is installed.
[0015]
The communication base station cooling system 10 is configured by combining a water-cooled system unit 11 for the high-temperature side communication device 2 and a boiling cooling system unit 12 for the low-temperature side communication device 3.
[0016]
The water-cooled system unit 11 includes a water-cooled unit 11a closely attached to the substrate 2a of the high-temperature side communication device 2, a radiator 11b disposed outdoors, an outdoor fan 13 for blowing air to the radiator 11b, a water-cooled unit 11a and a radiator 11b. And cooling water filled in a closed channel formed by the water cooling unit 11a, the row pipe 11c, the radiator 11b, and the return pipe 11d, and cooling in the closed channel. A pump 11e for circulating water.
[0017]
The boiling-cooling system unit 12 includes an indoor core 12a arranged near the low-temperature side communication device 3, an indoor fan 12b that blows air to the indoor core 12a, an outdoor core 12c that is arranged outdoor, and a blown air to the outdoor core 12c. An outdoor fan 13 (also serving as a fan of the water-cooled system unit 11), a row pipe 12d and a return pipe 12e connecting between the indoor core 12a and the outdoor core 12c, and an indoor core 12a. A refrigerant (for example, Freon) filled in a closed flow path formed by the pipe 12d, the outdoor core 12c, and the return pipe 12e.
[0018]
In the outdoor, the arrangement of the outdoor fan 13, the radiator 11b, and the outdoor core 12c is such that the outermost outside of the outdoor is the outdoor fan 13, the next to the outdoor fan 13 is the outer core 12c, and the innermost of the outside is the radiator 11b.
[0019]
Next, each operation of the water-cooled system unit 11 and the boiling-cooled system unit 12 will be described in order.
[0020]
In the water-cooled system unit 11, low-temperature cooling water in the water-cooling unit 11a of the cooling water circulating in the closed flow path by the pump 11e cools the high-temperature side communication device 2 by removing heat from the high-temperature side communication device 2. It generates heat with. The heated cooling water (high-temperature cooling water) is sent to the radiator 11b via the row pipe 11c. The cooling water sent to the radiator 11b is cooled by the low-temperature outside air blown by the outdoor fan 13. The cooled cooling water returns to the water cooling unit 11a via the return pipe 11d, takes heat from the high-temperature side communication device 2 again, cools the high-temperature side communication device 2 and generates heat. Thereafter, the above operation is repeated, and the high-temperature side communication device 2 is cooled.
[0021]
In the cooling / cooling system section 12, the indoor fan 12b sends high-temperature indoor air generated by the low-temperature side communication device 3 to the indoor core 12a. The liquefied refrigerant in the indoor core 12a cools the inside air by removing heat from the high-temperature inside air and boils into steam. The low-temperature side communication device 3 is cooled by the cooling of the inside air. The vaporized refrigerant rises inside the indoor core 12a and moves to the outdoor core 12c via the row pipe 12d. The refrigerant having moved to the outdoor core 12c is cooled and liquefied by the low-temperature outside air blown by the outdoor fan 13. The liquefied refrigerant returns to the indoor core 12a via the return pipe 12e, takes heat from the inside air again, cools the low-temperature side communication device 3, and boils to become steam. Thereafter, the above operation is repeated, and the low-temperature side communication device 3 is cooled.
[0022]
As described above, the communication base station cooling system 10 according to the present embodiment includes the water-cooled system unit 11 that cools the high-temperature communication device 2 and the boiling cooling system unit 12 that cools the low-temperature communication device 3. In this cooling system for a communication base station, a radiator 11b of a water-cooled system unit 11 and a core (outdoor core) 12c of a boiling cooling system unit 12 are respectively disposed outside the room, and cooling water and core flowing in the radiator 11b are provided. (Outdoor core) It is configured to cool the refrigerant flowing in the inside 12c by blowing of the outdoor fan 13.
[0023]
According to the communication base station cooling system 10, a new cooling system in which the water-cooling system unit 11 and the boiling cooling system unit 12 are combined is adopted, and the cooling water flowing in the radiator 11b of the water-cooling system unit 11 and the boiling cooling system are used. Since the refrigerant flowing in the core 12c of the expression system unit 12 is cooled by the blowing of the outdoor fan 13, it is possible to sufficiently cool the room without flowing a large amount of outside air during a time when the outside air temperature is high. Therefore, the air volume on the outdoor side can be suppressed and noise can be reduced.
[0024]
The arrangement of the radiator 11b and the core 12c is such that when the temperature of the radiator 11b and the temperature of the core 12c are compared, the temperature of the core 12c is lower, so that the wind first flows to the core 12c and then to the radiator 11b. The radiator 11b, the core 12c, and the outdoor fan 13 are arranged. This allows the outside air to flow from the low-temperature side to the high-temperature side, so that the refrigerant flowing in the core 12c and the cooling water flowing in the radiator 11b can be cooled with high temperature efficiency. In addition to FIG. 1, arrangements as shown in FIGS.
[0025]
Further, the water-cooled system unit 11 has a water-cooled unit 11a closely attached to the substrate 2a of the high-temperature side communication device 2. Since the water-cooling unit 11a is brought into close contact with the substrate 2a in this manner, the substrate 2a can be cooled directly, and a sufficient cooling effect for the high-temperature side communication device 2 can be obtained.
[0026]
The outdoor fan 13 may be any fan such as an axial propeller fan, a sirocco fan, and a turbo fan.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the cooling system for communication base stations of this invention, the airflow of the outdoor side can be suppressed and noise can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a communication base station cooling system according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a conventional communication base station cooling system.
FIG. 3 is a configuration diagram of a communication base station cooling system according to another embodiment of the present invention.
FIG. 4 is a configuration diagram of a communication base station cooling system according to still another embodiment of the present invention.
FIG. 5 is a configuration diagram of a communication base station cooling system according to still another embodiment of the present invention.
FIG. 6 is a configuration diagram of a communication base station cooling system according to still another embodiment of the present invention.
FIG. 7 is a configuration diagram of a communication base station cooling system according to still another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Communication base station 2 High-temperature side communication device 2a Substrate 3 Low-temperature side communication device 10 Communication base station cooling system 11 Water cooling type system unit 11a Cooling unit 11b Radiator 12 Boiling cooling type system unit 12c Core (outdoor core)
13. Outdoor fan

Claims (3)

高温側通信機を冷却する水冷式システム部と低温側通信機を冷却する沸騰冷却式システム部とからなる通信基地局用冷却システムであって、前記水冷式システム部のラジエタ及び前記沸騰冷却式システム部のコアをそれぞれ室外に配置するとともに、前記ラジエタ内を流れる冷却水及び前記コア内を流れる冷媒を室外ファンの送風によって冷却するよう構成されることを特徴とする通信基地局用冷却システム。A communication base station cooling system comprising a water-cooled system unit for cooling a high-temperature side communication device and a boiling cooling system unit for cooling a low-temperature side communication device, wherein the radiator of the water-cooled system unit and the boiling cooling system A cooling system for a communication base station, wherein the cores of the units are respectively arranged outside a room, and cooling water flowing in the radiator and refrigerant flowing in the core are cooled by blowing of an outdoor fan. 前記コアから前記ラジエタの順に送風されるよう、前記ラジエタ、前記コア、前記室外ファンが配置されることを特徴とする請求項１記載の通信基地局用冷却システム。The cooling system for a communication base station according to claim 1, wherein the radiator, the core, and the outdoor fan are arranged so that air is sent from the core in the order of the radiator. 前記水冷式システム部は、前記高温側通信機の基板に密着された水冷ユニットを有することを特徴とする請求項１記載の通信基地局用冷却システム。The cooling system for a communication base station according to claim 1, wherein the water-cooled system unit includes a water-cooled unit that is in close contact with a substrate of the high-temperature side communication device.
JP2003085747A 2003-03-26 2003-03-26 Cooling system for communication base station Expired - Fee Related JP4161764B2 (en)

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