JPS5919891Y2 - Cross flow closed cooling tower - Google Patents

Description

【考案の詳細な説明】 この考案は、密閉型の熱交換器を用いた冷却塔に関する
ものである。[Detailed Description of the Invention] This invention relates to a cooling tower using a closed heat exchanger.

従来密閉型の熱交換器は第１図乃至第３図に示すような
形状のものが殆んどであるため、その構造上直交流型の
場合においては冷却塔の外筐は角筒形となり、外気吸込
口は相対する二面になっている。Most conventional closed-type heat exchangers have the shapes shown in Figures 1 to 3, so in the case of cross-flow type heat exchangers, the outer casing of the cooling tower is shaped like a rectangular cylinder. , the outside air inlet is on two opposing sides.

即ち前述の密閉型の熱交換器においては、冷却すべき水
（冷媒）は熱交換器のパイプ１又は熱交換板２中の水路
３を外気と接することなく流れるが、このパイプ１又は
熱交換板２の外面には冷却効果を促進させるために、一
般に補助冷却水を流し、側面より外気を吸込んで外気と
の接触冷却と、補助冷却水の気化の潜熱によって、内部
の水を冷却している。That is, in the above-mentioned closed type heat exchanger, the water (refrigerant) to be cooled flows through the pipe 1 of the heat exchanger or the water channel 3 in the heat exchange plate 2 without coming into contact with the outside air. In order to promote the cooling effect on the outer surface of the plate 2, auxiliary cooling water is generally poured onto the outside surface, and the water inside is cooled by contact cooling with the outside air by drawing in outside air from the side, and by the latent heat of vaporization of the auxiliary cooling water. There is.

しかしながら前述のように外気吸込口４は相対抗する二
面だけであるために、熱交換器５の奥行寸法を大きくし
て熱交換面積を広くするようにしている。However, as described above, since the outside air suction port 4 has only two opposing sides, the depth dimension of the heat exchanger 5 is increased to widen the heat exchange area.

ところが、実際は外気吸込口４より吸込まれた外気は、
熱交換器５のパイプ１や、熱交換板２などとの接触によ
り、外気吸込口４から離れた中央部近くに達するときは
、相当温度が上昇し、例えば熱交換器４の奥行が１ｍ程
度あるときは、５０ｃｍ以上内側の部分においては、既
に空気は暖められ、冷却すべき水との温度差も少なく、
湿度も上昇するため、この部分における冷却効果は著し
く減殺し、かつ、通風に対する抵抗も増大し、その分だ
け出力の大きな送風機を必要とし、騒音源ともなる。However, in reality, the outside air sucked in from the outside air intake port 4 is
When the heat exchanger 5 comes into contact with the pipe 1, the heat exchange plate 2, etc., and reaches near the center part away from the outside air suction port 4, the temperature rises considerably, for example, when the depth of the heat exchanger 4 is about 1 m. In some cases, the air is already warmed within 50 cm or more, and there is little difference in temperature between it and the water that needs to be cooled.
Since the humidity also increases, the cooling effect in this area is significantly reduced, and the resistance to ventilation increases, requiring a blower with a correspondingly higher output, which also becomes a source of noise.

この考案は、このような公知の装置の欠点を改善したも
のであって、外気吸込口をほぼ全周として、この面積を
大きくシ、かつ熱交換器の奥行を小さくして、熱交換効
率を高め、更に、送風効率もよくするためのものである
。This invention improves the shortcomings of such known devices, and increases heat exchange efficiency by making the outside air inlet almost the entire circumference, increasing this area, and reducing the depth of the heat exchanger. This is to improve the airflow efficiency.

この考案は外筐の外周面のほぼ全面が外気吸込口として
あり、中央上面が送風機を装備した排気口としてあり、
この周りに散水装置が設けてあり、前記外気吸込口の内
側沿であって、散水装置の下側の位置には、外気吸込口
に沿った少なくとも三周渦巻状に巻いた熱交換パイプか
、前記外気吸込口の高さ全部に亙り数段に設けてあり、
これら数本の該パイプの両端は、これらパイプよりも内
側に位置している垂直方向の共通の供給側及び吐出側ヘ
ッダーパイプに、接続しであることを特徴とする直交流
密閉型冷却塔である。In this idea, almost the entire outer circumferential surface of the outer casing is used as an outside air intake port, and the upper center surface is used as an exhaust port equipped with a blower.
A water sprinkling device is provided around this, and a heat exchange pipe spirally wound at least three times along the outside air suction port is installed at a position below the water sprinkling device along the inside of the outside air suction port. are provided in several stages over the entire height of the outside air intake port,
A cross-flow closed cooling tower characterized in that both ends of these several pipes are connected to a vertical common supply side and discharge side header pipe located inside these pipes. be.

今この考案を図示の代表的な実施態様に基づいて説明す
る。The invention will now be explained based on the illustrated representative embodiment.

第６図、第７図において、１０は円筒形の外筐であって
、その外周面のほぼ全面は外気吸込口１１となっており
、ルーパー１２又は金網が取付けである。In FIGS. 6 and 7, reference numeral 10 denotes a cylindrical outer casing, and almost the entire outer circumferential surface thereof is an outside air suction port 11, to which a looper 12 or a wire mesh is attached.

底部は水槽１３となり、上部には中央部にベルマウス型
の排気筒１４よりなる排気口１５が設けてあり、この中
に送風機１６が装備してあり、ベルマウス型の排気筒１
４の外側にはドーナツ型の上部水槽１７が設けて、この
底の小孔群によって、散水装置１８が形成されている。The bottom part is a water tank 13, and the top part is provided with an exhaust port 15 consisting of a bellmouth-shaped exhaust pipe 14 in the center, and a blower 16 is installed in this.
A donut-shaped upper water tank 17 is provided on the outside of the water tank 4, and a water sprinkling device 18 is formed by a group of small holes at the bottom of the water tank 17.

前記外気吸込口１１の内側であって、散水装置の下側の
位置には、円筒形の密閉型熱交換器１９が設けである。A cylindrical closed heat exchanger 19 is provided inside the outside air suction port 11 and below the water sprinkler.

この熱交換器１９を更に具体的に示せば、三周渦巻にし
た熱交換パイプ２０が数段、外気吸込口１１の高さ一杯
に所定間隔をおいて、設けてあり、これら数本の熱交換
パイプ２０の両端部はそれぞれ共通の供給側ヘッダーパ
イプ２１．吐出側ヘッダーパイプ２２に接続してあり、
これら供給側及び吐出側ヘッダーパイプ２１．２２は前
記渦巻状の熱交換パイプ群よりも内側に位置し、垂直に
設けてあり、これらヘッダーパイプ２１．２２は、公知
の装置と同様に冷凍機に接続されていることは言うまで
もない。To show this heat exchanger 19 more specifically, several stages of three-circle spiral heat exchange pipes 20 are provided at predetermined intervals at the full height of the outside air suction port 11. Both ends of the exchange pipe 20 are connected to a common supply side header pipe 21. It is connected to the discharge side header pipe 22,
These supply side and discharge side header pipes 21, 22 are located inside the spiral heat exchange pipe group and are provided vertically, and these header pipes 21, 22 are connected to the refrigerator as in the known device. Needless to say, they are connected.

前述の冷却塔の外筐１０の実施態様としては円筒形のも
のを示したが、角筒形であってもよく、その場合は前記
熱交換パイプ１９の渦巻形状も、第８図にみられるよう
に角形となる。Although the embodiment of the cooling tower outer casing 10 described above is cylindrical, it may also be prismatic. In that case, the spiral shape of the heat exchange pipe 19 can also be seen in FIG. It becomes a square shape.

渦巻の巻数は、三周以上あればよいが、通常３周〜４周
でよい、また渦巻の巻径は、一段おきに、熱交換パイプ
の直径寸法程度づらして、散水装置よりの補助冷却水が
充分にかつ有効に接触するようにしておく（第９図参照
）。The number of turns of the vortex should be three or more turns, but usually 3 to 4 turns is sufficient.The diameter of the vortex is changed to about the diameter of the heat exchange pipe every other step, and the auxiliary cooling water from the water sprinkler is (See Figure 9).

叙上のように構成しているこの考案のものにおいては冷
却塔の外筐の外周面がほぼ全面外気吸込口１１となって
いるから、吸込口を大きくでき、従って従来公知の熱交
換器と同じ体積の熱交換スペースとすれば、その奥行寸
法は、士程度にすることができ、よって外気の冷たい空
気と接触させることができ、しかも空気抵抗も少なく、
熱交換率を著しく向上できる。In this device constructed as described above, almost the entire outer peripheral surface of the outer casing of the cooling tower serves as the outside air suction port 11, so the suction port can be made large, and therefore it is different from the conventional heat exchanger. Assuming that the heat exchange space has the same volume, its depth can be as small as 1.5 cm, which allows it to come into contact with the cold outside air, and has less air resistance.
The heat exchange rate can be significantly improved.

また同一の熱交換容量とすれば、小型化が可能である。Furthermore, if the heat exchange capacity is the same, it is possible to downsize.

また、ヘッダーパイプ２１．２２は渦巻状の熱交換パイ
プ２０の内側に垂直方向に位置しているから、これらヘ
ッダーパイプ２１．２２は外気の吸込みに対して、何ら
障害とならず、この冷却塔は全く方向性がなく、据付に
対して、制限を受けない。Furthermore, since the header pipes 21 and 22 are located vertically inside the spiral heat exchange pipe 20, these header pipes 21 and 22 do not pose any obstacle to the intake of outside air, and the cooling tower is completely directionless and has no restrictions on installation.

更にこの考案のものにおいては、平面形状を四角にする
ことも可能で、この場合も特に方向性はなくなる。Furthermore, in this invention, it is also possible to make the planar shape square, and in this case as well, there is no particular directionality.

設置すべき場所によっては長方形であつもよい。It may be rectangular depending on the location where it is to be installed.

更にこの考案のものにおいては、構造が簡単であるから
、故障も少なく、熱交換パイプ２０としては細いパイプ
を彎曲して成形して形成すればよく、従来のように、数
多くのＵ字管や、エルボ−を必要とせずに形成が可能で
ある。Furthermore, since the structure of this invention is simple, there are fewer failures, and the heat exchange pipe 20 can be formed by bending and molding a thin pipe, instead of using a large number of U-shaped pipes or , can be formed without the need for an elbow.

その他図示において、２３．２４は、水槽１３が上部水
槽１７に補助冷却水を汲み上げるためのポンプ及びパイ
プである。In addition, in the illustration, 23 and 24 are pumps and pipes for pumping auxiliary cooling water from the water tank 13 to the upper water tank 17.

２５は熱交換パイプを外筐１０に固定するサドルである
。25 is a saddle for fixing the heat exchange pipe to the outer casing 10.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの考案に係るものであって、第１図乃至第３図
はそれぞれ公知の密閉型熱交換器の概略側面図である。 第４図は従来公知の交流型冷却塔の縦断側面図、第５図
は第４図の平面図、第６図はこの考案の半裁正面図、第
７図は横断平面図、第８図は角型の冷却筒の平面図、第
９図は渦巻状の熱交換パイプの配置を示す縦断拡大図で
ある。 図中、１０・・・・・・外筐、１１・・・・・・外気吸
込口、１２・・・・・・ルーバー、１３・・・・・・水
槽、１４・・・・・・上部水槽、１５・・・・・・排気
口、１６・・・・・・送風機、１８・・・・・・散水装
置、１９・・・・・・熱交換器、２０・・・・・・熱交
換パイプ、２１・・・・・・供給側ヘッダーパイプ、２
２・・・・・・吐出側ヘッダーパイプ。The drawings relate to this invention, and each of FIGS. 1 to 3 is a schematic side view of a known closed type heat exchanger. Fig. 4 is a longitudinal cross-sectional side view of a conventionally known AC cooling tower, Fig. 5 is a plan view of Fig. 4, Fig. 6 is a half-cut front view of this invention, Fig. 7 is a transverse plan view, and Fig. 8 is a cross-sectional side view of a conventionally known AC cooling tower. FIG. 9 is a plan view of the rectangular cooling cylinder and an enlarged vertical view showing the arrangement of the spiral heat exchange pipes. In the figure, 10...outer casing, 11...outside air inlet, 12...louver, 13...water tank, 14...upper part Water tank, 15... Exhaust port, 16... Blower, 18... Water sprinkler, 19... Heat exchanger, 20... Heat Replacement pipe, 21... Supply side header pipe, 2
2...Discharge side header pipe.

Claims (5)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）外筐の外周面のほぼ全面が外気吸込口としてあり
、中央上面が送風機を装備した排気口としてあり、この
周りに散水装置が設けてあり、前記外気吸込口の内側沿
であって、散水装置の下側の位置には、外気吸込口に沿
った少なくとも二層渦巻状に巻いた熱交換パイプが、前
記外気吸込口の高さ全部に亙り数段に設けてあり、これ
ら数本の該パイプの両端は、これらパイプよりも内側に
位置している垂直方向の共通の供給側及び吐出側ヘッダ
ーパイプに、接続しであることを特徴とする直交流密閉
型冷却塔。(1) Almost the entire outer circumferential surface of the outer casing is an outside air inlet, the upper center surface is an exhaust port equipped with a blower, a water sprinkler is provided around this, and along the inside of the outside air inlet At the bottom of the sprinkler system, there are heat exchange pipes wound in a spiral shape in at least two layers along the outside air inlet, which are installed in several stages over the entire height of the outside air inlet. A cross-flow closed cooling tower characterized in that both ends of the pipes are connected to a vertical common supply side and discharge side header pipe located inside these pipes. （２）各熱交換パイプは三周渦巻としである実用新案登
録請求の範囲第１項記載の直交流密閉型冷却塔。(2) The cross-flow closed type cooling tower according to claim 1, wherein each heat exchange pipe has a three-turn spiral. （３）熱交換パイプは、一段置きに、各渦巻の径が、パ
イプの直径程度具にしである実用新案登録請求の範囲第
１項記載の直交流密閉型冷却塔。(3) The cross-flow closed type cooling tower according to claim 1, wherein the heat exchange pipe has a diameter of each volute in every other stage, which is approximately the same as the diameter of the pipe. （４）外筐が円筒形であることを特徴とする実用新案登
録請求の範囲第１項記載の直交流密閉型冷却塔。(4) The cross-flow closed cooling tower according to claim 1, wherein the outer casing is cylindrical. （５）外筐が角筒形であることを特徴とする実用新案登
録請求の範囲第１項記載の直交流密閉型冷却塔。(5) The cross-flow closed type cooling tower according to claim 1, wherein the outer casing has a rectangular cylindrical shape.