JP3635841B2

JP3635841B2 - Water tower

Info

Publication number: JP3635841B2
Application number: JP04079297A
Authority: JP
Inventors: 攻後藤; 浩司木村; 健一郎南
Original assignee: 石川島播磨重工業株式会社
Priority date: 1997-02-25
Filing date: 1997-02-25
Publication date: 2005-04-06
Anticipated expiration: 2017-02-25
Also published as: JPH10238967A

Description

【０００１】
【発明の属する技術分野】
本発明は、冷水塔に関するものである。
【０００２】
【従来の技術】
図４は従来の冷水塔の一例を示すもので、この冷水塔は、ケーシング１の頂部に設けられた送風機２を有する排気口３と、ケーシング１の外周に形成された外気取入口４と、ケーシング１内の上部における排気口３周囲に設けられた温水槽５と、該温水槽５の下側に配置され且つ温水槽５下面の散水口６から流下させた温水７を送風機２により外気取入口４から取り込んだ外気８と熱交換させて冷却する熱交換部９とを備えており、該熱交換部９は、温水槽５の直下に設けたフィン付きチューブ１０からなる乾式空気加熱部１１と、該乾式空気加熱部１１の下側に配置され且つ例えばシート状の合成樹脂材の表面に凹凸を有した熱交換面材を多数並列に起立させて相互を所要間隔を隔てて接合することにより全体で自立するようにした充填材１２とにより構成されている。
【０００３】
尚、図中１３は冷却後の水を回収する底部水槽である。
【０００４】
斯かる冷水塔においては、温水槽５の温水７を散水口６から乾式空気加熱部１１のフィン付きチューブ１０内を通して流下させた後に、その下部の充填材１２に沿わせて流下させ、同時に送風機２により外気取入口４から外気８を吸引して乾式空気加熱部１１及び充填材１２を横方向に流通させることにより前記温水７の冷却を行うようにしている。
【０００５】
このとき、前記充填材１２に沿って流下する温水７は、外気８と直接熱交換されることにより効果的に冷却されるが、一方、充填材１２において温水７と熱交換を行った外気８は、昇温されると共に湿度が略１００％の湿り空気１４となるので、この湿り空気１４をそのまま冷水塔外部に排出すると、外気温度が低い場合に白煙を生じることがある。
【０００６】
このような白煙の発生は、外気を汚染しているかの如き誤解を近隣居住者等に与える結果となり、また、白煙が地上に降りて周囲に霧のように立ちこめることにより視界不良を招く等の不具合があるので、白煙を極力発生させないようにする要求が高まっている。
【０００７】
この為、図示する例においては、温水７を乾式空気加熱部１１のフィン付きチューブ１０内を通して流下させる際に、フィン付きチューブ１０の外周に沿って流通する外気８を乾式で加熱することにより湿度が極めて低い乾き空気１５とし、この乾き空気１５を送風機２によって前記湿り空気１４に混合して排気口３から排出される空気の湿度を低減し、白煙の発生を防止するようにしているのである。
【０００８】
【発明が解決しようとする課題】
しかしながら、前述した如き従来の冷水塔においては、白煙の発生を防止する為の乾き空気１５をつくる為に、フィン付きチューブ１０による専用の乾式空気加熱部１１を設けるようにしている為、構造が複雑化して建築コストが高騰すると共に、フィン付きチューブ１０による間接的な熱交換である為に熱交換効率を高めることができず、従って大きな容量が必要となって乾式空気加熱部１１の構造が大型化し、冷水塔の高さ寸法が増大して冷水塔全体の大型化を招くという問題があった。
【０００９】
この為、近年においては、充填材１２を互いに外気８の流通空間を隔絶した常時湿式領域と湿式・乾式切替領域とに区分し、該湿式・乾式切替領域と常時湿式領域とを個別に散水し得るように構成することによって、充填材１２の一部を湿式・乾式切替領域として利用し、フィン付きチューブ１０による専用の乾式空気加熱部１１を不要として冷水塔の建築コストの削減と小型化を図ることが考えられているが、図５に示す如く、従来における充填材１２は、一般的に上下方向に多段に配置されて冷水塔内の横梁３３により支持された格子構造のグリッドデッキ３４上に載置されていたにすぎず、このようなグリッドデッキ３４上に載置する従来方式のままでは、上下段の湿式・乾式切替領域同士を常時湿式領域と隔絶させて連続させることが不可能であり、例えば冷水塔上部の温水槽５から湿式・乾式切替領域に温水７を散水しないようにしても、下段へ移行するうちに常時湿式領域から湿式・乾式切替領域へ温水７が侵入してしまい、外気８を乾式で加熱して湿度の低い乾き空気１５をつくることができなくなる。
【００１０】
本発明は上述の実情に鑑みてなしたもので、上下段の湿式・乾式切替領域同士を常時湿式領域と隔絶したまま連続させて充填材を支持し得るようにした冷水塔を提供することを目的としている。
【００１１】
【課題を解決するための手段】
本発明は、充填材を互いに外気の流通空間を隔絶した常時湿式領域と湿式・乾式切替領域とに区分して両領域を個別に散水し得るよう構成した冷水塔であって、常時湿式領域及び湿式・乾式切替領域の位置を相互に対応させて充填材を上下方向に多段に配置すると共に、上下の充填材の相互間に多数の散水口を底部に開口した中間温水槽を設け、該中間温水槽の底部上下面に上下段の湿式・乾式切替領域同士を連通する散水口を包囲して上下段の湿式・乾式切替領域同士を常時湿式領域と隔絶したまま連続させる隔絶板を設け、且つ前記中間温水槽の底部上面に上段側の常時湿式領域を形成している充填材の下端を底上げして支持する通水構造の台座を設けたことを特徴とするものである。
【００１２】
而して、本発明においては、白煙が発生する虞れがある時（外気温度が低い時）に、湿式・乾式切替領域への散水を停止して常時湿式領域のみに散水を行うと、該常時湿式領域に散水された温水は、充填材の表面を流下して中間温水槽の底部に到るが、このとき、常時湿式領域を形成している充填材の下端は、通水構造の台座により底上げされて支持されているので、充填材の下端自体や台座により温水の分散が堰止められてしまうような不具合が起こらず、温水は中間温水槽内で良好に分散して各散水口から下段側の常時湿式領域へと均等に散水されることになり、各段の常時湿式領域において外気による温水の直接冷却が効果的に行われる。
【００１３】
一方、上下段の湿式・乾式切替領域同士を連通する中間温水槽の散水口は、隔絶板により中間温水槽の底部の上下面で包囲されているので、隣接している常時湿式領域から温水が湿式・乾式切替領域へ侵入してしまうような不具合が起こらず、上下段の湿式・乾式切替領域同士は常時湿式領域と隔絶されたまま中間温水槽を介して連続されることになり、各段の湿式・乾式切替領域において外気の乾式加熱が良好に行われて湿度の低い乾き空気がつくられる。
【００１４】
更に、本発明においては、中間温水槽の底部上面の隔絶板が、上段側の湿式・乾式切替領域を形成している充填材の下端により抱持され、下段側の湿式・乾式切替領域を形成している充填材の上端が、中間温水槽の底部下面の隔絶板により抱持されていることが好ましく、このようにすれば、より確実に常時湿式領域から湿式・乾式切替領域への温水の侵入を防ぐことが可能となる。
【００１５】
また、通水構造の台座は、例えば多数の通水孔を穿設したパンチングメタル板により下部開放の台形型側面となるよう構成することが可能である。
【００１６】
【発明の実施の形態】
以下本発明の実施の形態を図面を参照しつつ説明する。
【００１７】
図１〜図３は本発明を実施する形態の一例を示すもので、図４と同一の符号を付した部分は同一物を表わしている。
【００１８】
図１及び図２に示す如く、本形態例においては、フィン付きチューブによる専用の乾式空気加熱部を不要とし、温水槽５の下側に配置される熱交換部を、上下方向に多段に配置された充填材１２により構成している。
【００１９】
上下各段の充填材１２は、シート状の合成樹脂材の表面に凹凸を有した熱交換面材を多数並列に起立させて相互間を適宜位置に凸設した図示しない突起部を介し所要間隔を隔てて接合することにより全体で自立し得るよう構成されており、これによって、相互間に上下方向に延びる外気８の流通空間１６を確保するようにした構造となっており、互いに外気８の流通空間１６を隔絶した常時湿式領域１７と湿式・乾式切替領域１８とに夫々区分され、しかも、各段における充填材１２の常時湿式領域１７及び湿式・乾式切替領域１８については相互に位置を対応させて区分してある。
【００２０】
また、上下に配置される充填材１２の相互間には、各段の充填材１２を支持する為の中間温水槽１９が設けられており、該中間温水槽１９の底部には、下段の充填材１２の常時湿式領域１７と湿式・乾式切替領域１８とに散水し得るよう散水口２０が開口されている。
【００２１】
前記中間温水槽１９の底部上下面には、上下段の湿式・乾式切替領域１８同士を連通する散水口２０を包囲して上下段の湿式・乾式切替領域１８同士を常時湿式領域１７と隔絶したまま連続させる隔絶板２１，２２が設けられており、中間温水槽１９の底部上面の隔絶板２１が、上段側の湿式・乾式切替領域１８を形成している充填材１２の下端により抱持され、下段側の湿式・乾式切替領域１８を形成している充填材１２の上端が、中間温水槽１９の底部下面の隔絶板２２により抱持されている。
【００２２】
尚、上段側の湿式・乾式切替領域１８を形成している充填材１２の下端には、凹凸のない平坦部１２ａを形成しておき、中間温水槽１９の底部上面の隔絶板２１を挟み込んで抱持する際に前記平坦部１２ａが隔絶板２１の外側面に密着するようにし、充填材１２の表面を凹凸に案内されて流下してきた温水７が確実に隔絶板２１の内側に流れ込むようにしておくことが好ましい。
【００２３】
また、前記中間温水槽１９の底部上面における上段側の常時湿式領域１７に対応した部分には、多数の通水孔３０を穿設したパンチングメタル板により下部開放の台形型側面となるよう構成した通水構造の台座３１が配設されており、該台座３１により上段側の常時湿式領域１７を形成している充填材１２の下端が底上げされて支持されている。
【００２４】
尚、図中３２は前記台座３１の長手方向複数箇所に多数の通水孔３０を有して配設された補強用のリブである。
【００２５】
一方、前記温水槽５内は、その直下に配置される充填材１２における湿式・乾式切替領域１８を常時湿式領域１７とは別に散水し得るよう湿式・乾式切替領域１８に連通する散水口６を仕切板２３により区画してあり、特に本形態例では、湿式・乾式切替領域１８に連通する全ての散水口６を仕切板２３により櫛歯状に区画し、該仕切板２３により区画された区画領域２４と、温水槽５内における区画領域２４以外の貯水領域２５との二つの領域に分けてある（図３参照）。
【００２６】
更に、前記仕切板２３の適宜位置には、貯水領域２５に温水供給管２８を介して供給される温水７を区画領域２４に対し適宜に分配し得るよう開閉可能なバルブ２６を備えた連通口２７が設けられている。
【００２７】
尚、図中２９は温水槽５及び中間温水槽１９の下面に開口された散水口６，２０に付設された散水ノズルであり、このような散水ノズル２９を散水口６，２０に付設すれば、温水７を充填材１２に対し良好に散水できるが、充填材１２相互の間隔や散水口６，２０の数や配置位置、口径等の調整により省略することも可能である。
【００２８】
また、本形態例においては、仕切板２３により区画された温水槽５を用いて温水７を散水するようにしているので、この温水槽５の底部下面にも中間温水槽１９と同様に隔絶板２２’を配設し、下段側の湿式・乾式切替領域１８を形成している充填材１２の上端を抱持させて常時湿式領域１７から温水７が侵入しないようにしてある。
【００２９】
而して、冬期等の白煙が発生する虞れがある時（外気温度が低い時）に、連通口２７のバルブ２６を閉じて仕切板２３により区画された区画領域２４への温水７の供給を停止し、これにより湿式・乾式切替領域１８への散水を停止して常時湿式領域１７のみに散水を行うと、該常時湿式領域１７に散水された温水７は、充填材１２の表面を流下して中間温水槽１９の底部に到るが、このとき、常時湿式領域１７を形成している充填材１２の下端は、通水構造の台座３１により底上げされて支持されているので、充填材１２の下端自体や台座３１により温水７の分散が堰止められてしまうような不具合が起こらず、温水７は中間温水槽１９内で良好に分散して各散水口２０から下段側の常時湿式領域１７へと均等に散水されることになり、各段の常時湿式領域１７において外気８による温水７の直接冷却が効果的に行われる。
【００３０】
一方、上下段の湿式・乾式切替領域１８同士を連通する中間温水槽１９の散水口２０は、隔絶板２１，２２により中間温水槽１９の底部の上下面で包囲されているので、隣接している常時湿式領域１７から温水７が湿式・乾式切替領域１８へ侵入してしまうような不具合が起こらず、上下段の湿式・乾式切替領域１８同士は常時湿式領域１７と隔絶されたまま中間温水槽１９を介して連続されることになり、各段の湿式・乾式切替領域１８において外気８の乾式加熱が良好に行われて湿度の低い乾き空気がつくられる。
【００３１】
従って、前述した本形態例の冷水塔によれば、上下段の湿式・乾式切替領域１８同士を常時湿式領域１７と隔絶したまま連続させて充填材１２を支持することができ、しかも、各段の常時湿式領域１７を流下した温水７を中間温水槽１９内で良好に分散させて各散水口２０から下段側の常時湿式領域１７へと均等に散水することができるので、充填材１２の一部を湿式・乾式切替領域１８として利用することにより白煙の発生を適宜に防止し得るようにした冷水塔を実現することが可能となり、延いては冷水塔の建築コストの削減と小型化を図ることができる。
【００３２】
尚、本発明の冷水塔は、上述の形態例にのみ限定されるものではなく、冷水塔の上部において湿式・乾式切替領域と常時湿式領域とを個別に散水する手段については、例えば個別に流路を遮断し得るようにした複数系統の散水用スプレー配管を用いて散水する等といった各種の方式を採用することが可能であり、必ずしも図示の如き区画された温水槽を用いなくても良いこと、その他、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。
【００３３】
【発明の効果】
上記した本発明の冷水塔によれば、下記の如き種々の優れた効果を奏し得る。
【００３４】
（Ｉ）上下段の湿式・乾式切替領域同士を常時湿式領域と隔絶したまま連続させて充填材を支持することができ、しかも、各段の常時湿式領域を流下した温水を中間温水槽内で良好に分散させて各散水口から下段側の常時湿式領域へと均等に散水することができるので、充填材の一部を湿式・乾式切替領域として利用することにより白煙の発生を適宜に防止し得るようにした冷水塔を実現することが可能となり、延いては冷水塔の建築コストの削減と小型化を図ることができる。
【００３５】
（ＩＩ）中間温水槽の底部上面の隔絶板が、上段側の湿式・乾式切替領域を形成している充填材の下端により抱持され、下段側の湿式・乾式切替領域を形成している充填材の上端が、中間温水槽の底部下面の隔絶板により抱持されるようにすれば、より確実に常時湿式領域から湿式・乾式切替領域への温水の侵入を防ぐことができる。
【図面の簡単な説明】
【図１】本発明を実施する形態の一例を示す断面図である。
【図２】図１の温水槽及び中間温水槽の斜視図である。
【図３】図２の温水槽の平面図である。
【図４】従来の冷水塔の一例を示す概略図である。
【図５】従来の冷水塔における充填材の支持構造の一例を示す側面図である。
【符号の説明】
８外気
１２充填材
１６流通空間
１７常時湿式領域
１８湿式・乾式切替領域
１９中間温水槽
２０散水口
２１隔絶板
２２隔絶板
３０通水孔
３１台座[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cold water tower.
[0002]
[Prior art]
FIG. 4 shows an example of a conventional cold water tower. The cold water tower includes an exhaust port 3 having a blower 2 provided at the top of the casing 1, an outside air intake port 4 formed on the outer periphery of the casing 1, and The hot water tank 5 provided around the exhaust port 3 in the upper part of the casing 1 and the hot water 7 disposed below the hot water tank 5 and allowed to flow down from the water spray port 6 on the lower surface of the hot water tank 5 are taken out by the blower 2. A heat exchanging section 9 is provided for heat exchange with the outside air 8 taken in from the inlet 4 and cooled, and the heat exchanging section 9 is a dry air heating section 11 comprising a finned tube 10 provided immediately below the hot water tank 5. And a plurality of heat exchange facets disposed on the lower side of the dry air heating unit 11 and having projections and depressions on the surface of, for example, a sheet-like synthetic resin material, and are connected to each other with a predetermined interval therebetween. Filler that has been made independent by 2 is composed of a.
[0003]
In the figure, reference numeral 13 denotes a bottom water tank for collecting the cooled water.
[0004]
In such a cold water tower, the hot water 7 in the hot water tank 5 is caused to flow down from the sprinkling port 6 through the finned tube 10 of the dry air heating unit 11 and then down along the filler 12 at the lower portion thereof, and at the same time, the blower The hot water 7 is cooled by sucking the outside air 8 from the outside air inlet 4 and circulating the dry air heating unit 11 and the filler 12 in the lateral direction.
[0005]
At this time, the hot water 7 flowing down along the filler 12 is effectively cooled by directly exchanging heat with the outside air 8. On the other hand, the outside air 8 having exchanged heat with the warm water 7 in the filler 12. As the temperature rises and the humidity becomes the humid air 14 with approximately 100%, if the humid air 14 is discharged to the outside of the cold water tower as it is, white smoke may be generated when the outside air temperature is low.
[0006]
The generation of such white smoke results in misunderstandings such as whether it is polluting the outside air to neighboring residents, etc., and white smoke falls on the ground and stands like mist around it, causing poor visibility Therefore, there is an increasing demand to minimize the generation of white smoke.
[0007]
For this reason, in the illustrated example, when the hot water 7 flows down through the finned tube 10 of the dry air heating unit 11, the outside air 8 flowing along the outer periphery of the finned tube 10 is heated in a dry manner to reduce the humidity. However, the dry air 15 is mixed with the humid air 14 by the blower 2 to reduce the humidity of the air discharged from the exhaust port 3 and prevent the generation of white smoke. is there.
[0008]
[Problems to be solved by the invention]
However, in the conventional chilled water tower as described above, a dedicated dry air heating unit 11 by the finned tube 10 is provided in order to produce dry air 15 for preventing the generation of white smoke. However, the heat exchange efficiency cannot be increased due to the indirect heat exchange by the finned tube 10, and thus a large capacity is required and the structure of the dry air heating unit 11 is increased. There is a problem that the size of the chilled water tower increases and the height of the chilled water tower increases, leading to an increase in the size of the entire cold water tower.
[0009]
For this reason, in recent years, the filler 12 is divided into a normal wet region and a wet / dry switching region that separate the circulation space of the outside air 8, and the wet / dry switching region and the constant wet region are separately sprinkled. By configuring so as to obtain, a part of the filler 12 is used as a wet / dry switching region, and the dedicated dry air heating unit 11 by the finned tube 10 is not required, thereby reducing the construction cost and size of the chilled water tower. As shown in FIG. 5, the conventional filler 12 is generally arranged in multiple stages in the vertical direction on a grid deck 34 having a lattice structure supported by horizontal beams 33 in the chilled water tower. In the conventional method of placing on the grid deck 34, the upper and lower wet / dry switching areas should always be separated from the wet area and continued. For example, even if hot water 7 is not sprayed from the hot water tank 5 at the upper part of the cold water tower to the wet / dry switching area, the hot water 7 always enters the wet / dry switching area from the wet area while moving to the lower stage. As a result, the outside air 8 cannot be heated to dry air 15 having a low humidity.
[0010]
The present invention has been made in view of the above circumstances, and provides a chilled water tower in which upper and lower wet / dry switching regions are continuously separated from the wet regions so as to support the filler. It is aimed.
[0011]
[Means for Solving the Problems]
The present invention is a chilled water tower configured to divide the filler into a normal wet region and a wet / dry switching region in which the circulation space of the outside air is isolated from each other, and to spray water separately in both regions, the normal wet region and The wet and dry switching areas correspond to each other so that the fillers are arranged in multiple stages in the vertical direction, and an intermediate hot water tank having a number of sprinkling openings opened at the bottom between the upper and lower fillers. An isolating plate is provided on the upper and lower surfaces of the bottom of the hot water tank to surround the water spout that communicates the upper and lower wet / dry switching areas and to keep the upper and lower wet / dry switching areas continuously isolated from the wet areas, and A water-flowing pedestal is provided on the upper surface of the bottom of the intermediate hot water tank to support the lower end of the filler forming the upper wet-type region at the bottom.
[0012]
Thus, in the present invention, when white smoke may be generated (when the outside air temperature is low), water spraying to the wet / dry switching region is stopped and water spraying is always performed only to the wet region. The warm water sprinkled in the constantly wet area flows down the surface of the filler and reaches the bottom of the intermediate warm water tank. At this time, the lower end of the filler forming the always wet area has a water flow structure. Since the bottom is raised and supported by the pedestal, there is no problem that the dispersion of hot water is blocked by the lower end of the filler itself or by the pedestal, and the hot water is well dispersed in the intermediate hot water tank. Thus, the water is evenly sprayed to the constantly wet area on the lower stage side, and the direct cooling of the warm water by the outside air is effectively performed in the always wet area of each stage.
[0013]
On the other hand, the water spout of the intermediate hot water tank that connects the upper and lower wet / dry switching areas is surrounded by the upper and lower surfaces of the bottom of the intermediate hot water tank by the isolation plate, so that hot water can be drawn from the adjacent always wet area. There is no problem of entering the wet / dry switching area, and the upper and lower wet / dry switching areas are always separated from the wet area through the intermediate hot water tank. In the wet / dry switching region, dry heating of the outside air is performed satisfactorily to produce dry air with low humidity.
[0014]
Further, in the present invention, the isolation plate on the upper surface of the bottom of the intermediate hot water tank is held by the lower end of the filler forming the upper wet-dry switching region to form the lower wet-dry switching region. It is preferable that the upper end of the filling material is held by an isolation plate on the bottom lower surface of the intermediate hot water tank, and in this way, the hot water from the always wet area to the wet / dry switching area is more reliably ensured. Intrusion can be prevented.
[0015]
Moreover, the water-permeable structure base can be configured to have a trapezoidal side surface that is open at the bottom by, for example, a punching metal plate having a large number of water-permeable holes.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0017]
1 to 3 show an example of an embodiment for carrying out the present invention, and the portions denoted by the same reference numerals as those in FIG. 4 represent the same items.
[0018]
As shown in FIGS. 1 and 2, in this embodiment, a dedicated dry air heating unit using a finned tube is not necessary, and the heat exchange unit arranged below the hot water tank 5 is arranged in multiple stages in the vertical direction. It is constituted by the filler 12 made.
[0019]
The upper and lower fillers 12 are provided at a necessary interval through projections (not shown) in which a large number of heat exchange facets having irregularities on the surface of a sheet-like synthetic resin material are erected in parallel so as to protrude from each other at appropriate positions. Are separated from each other so that they can stand independently as a whole, and thereby, a structure is provided in which a circulation space 16 of the outside air 8 extending in the vertical direction is secured between them. It is divided into a constant wet region 17 and a wet / dry switching region 18 that isolate the distribution space 16, and the constant wet region 17 and the wet / dry switching region 18 of the filler 12 in each stage correspond to each other. They are separated.
[0020]
In addition, an intermediate hot water tank 19 for supporting each stage of the filler 12 is provided between the upper and lower fillers 12, and the bottom of the intermediate hot water tank 19 is filled with the lower stage. A water spout 20 is opened so that water can be sprayed into the always wet area 17 and the wet / dry switching area 18 of the material 12.
[0021]
The upper and lower surfaces of the bottom of the intermediate hot water tank 19 surround the water spout 20 that communicates the upper and lower wet / dry switching regions 18, and the upper and lower wet / dry switching regions 18 are always isolated from the wet region 17. Isolation plates 21 and 22 are provided to be continued, and an isolation plate 21 on the upper surface of the bottom of the intermediate hot water tank 19 is held by the lower end of the filler 12 forming the upper wet-dry switching region 18. The upper end of the filler 12 forming the lower-stage wet / dry switching region 18 is held by the isolation plate 22 on the bottom lower surface of the intermediate hot water tank 19.
[0022]
In addition, a flat portion 12a without unevenness is formed at the lower end of the filler 12 forming the upper wet-dry switching region 18, and the isolation plate 21 on the bottom upper surface of the intermediate hot water tank 19 is sandwiched between them. When holding, the flat portion 12a is brought into close contact with the outer surface of the isolation plate 21 so that the hot water 7 flowing down while being guided by the irregularities on the surface of the filler 12 surely flows into the inner side of the isolation plate 21. It is preferable to keep it.
[0023]
Further, a portion corresponding to the upper wet region 17 on the upper side of the bottom upper surface of the intermediate hot water tank 19 is configured to be a trapezoidal side surface with a lower opening by a punching metal plate having a large number of water passage holes 30 formed therein. A pedestal 31 having a water flow structure is disposed, and the pedestal 31 supports the bottom end of the filler 12 forming the upper wet-type region 17 by raising the bottom.
[0024]
In the figure, reference numeral 32 denotes reinforcing ribs provided with a large number of water passage holes 30 at a plurality of locations in the longitudinal direction of the pedestal 31.
[0025]
On the other hand, the inside of the hot water tank 5 has a water spout 6 that communicates with the wet / dry switching region 18 so that the wet / dry switching region 18 in the filler 12 arranged immediately below can be constantly sprayed separately from the wet region 17. Partitioned by the partition plate 23, and particularly in this embodiment, all the water spouts 6 communicating with the wet / dry switching region 18 are partitioned in a comb-like shape by the partition plate 23, and partitioned by the partition plate 23 The region 24 is divided into two regions, a water storage region 25 other than the partition region 24 in the hot water tank 5 (see FIG. 3).
[0026]
Furthermore, a communication port provided with an openable / closable valve 26 at an appropriate position of the partition plate 23 so that the hot water 7 supplied to the water storage region 25 via the hot water supply pipe 28 can be appropriately distributed to the partition region 24. 27 is provided.
[0027]
In the figure, reference numeral 29 denotes a watering nozzle attached to the water spouts 6 and 20 opened on the lower surfaces of the hot water tank 5 and the intermediate hot water tank 19, and if such a watering nozzle 29 is attached to the water spouts 6 and 20, respectively. Although the hot water 7 can be sprinkled well with respect to the filler 12, it can be omitted by adjusting the interval between the fillers 12, the number of sprinkling ports 6, 20, the arrangement position, the diameter, and the like.
[0028]
Further, in this embodiment, since the hot water 7 is sprinkled using the hot water tank 5 partitioned by the partition plate 23, an isolation plate is provided on the bottom surface of the bottom of the hot water tank 5 in the same manner as the intermediate hot water tank 19. 22 ′ is provided and the upper end of the filler 12 forming the lower wet side / dry type switching region 18 is held so that the hot water 7 does not always enter from the wet region 17.
[0029]
Thus, when there is a possibility that white smoke may be generated in winter or the like (when the outside air temperature is low), the valve 26 of the communication port 27 is closed and the hot water 7 to the partitioned area 24 partitioned by the partition plate 23 is discharged. When the supply is stopped and water spraying to the wet / dry switching region 18 is stopped and water is sprayed only to the wet region 17 at all times, the hot water 7 sprayed to the wet region 17 is constantly applied to the surface of the filler 12. It flows down to the bottom of the intermediate hot water tank 19, but at this time, the lower end of the filler 12 that always forms the wet region 17 is supported by being raised by the pedestal 31 having a water flow structure. There is no problem that the dispersion of the hot water 7 is blocked by the lower end of the material 12 or the pedestal 31, and the hot water 7 is well dispersed in the intermediate hot water tank 19, and is always wet on the lower side from each water spout 20. Water will be sprayed evenly into the area 17, and each stage Direct cooling of the hot water 7 by the ambient air 8 is effectively performed in the normally wet region 17.
[0030]
On the other hand, the water spout 20 of the intermediate hot water tank 19 that connects the upper and lower wet / dry switching areas 18 is surrounded by the upper and lower surfaces of the bottom of the intermediate hot water tank 19 by the isolation plates 21 and 22. There is no problem that the hot water 7 enters the wet / dry switching area 18 from the always wet area 17, and the upper and lower wet / dry switching areas 18 are always isolated from the wet area 17 while being separated from the wet area 17. 19, the dry heating of the outside air 8 is performed satisfactorily in the wet / dry switching region 18 of each stage, and dry air with low humidity is created.
[0031]
Therefore, according to the chilled water tower of this embodiment described above, the upper and lower wet / dry switching regions 18 can be continuously supported while being isolated from the wet region 17, and each stage can be supported. The warm water 7 flowing down the normal wet region 17 can be well dispersed in the intermediate hot water tank 19 and can be sprayed evenly from the respective water spouts 20 to the constant wet region 17 on the lower stage side. It is possible to realize a chilled water tower that can appropriately prevent the generation of white smoke by using the part as the wet / dry switching region 18, thereby reducing the construction cost and size of the chilled water tower. Can be planned.
[0032]
The chilled water tower of the present invention is not limited to the above-described embodiment. Means for individually spraying the wet / dry switching area and the always wet area in the upper part of the chilled water tower, for example, individually flows. It is possible to adopt various methods such as water spraying using a plurality of water spray spray pipes that can block the road, and it is not always necessary to use a partitioned hot water tank as shown in the figure. Of course, various modifications can be made without departing from the scope of the present invention.
[0033]
【The invention's effect】
According to the above-described cold water tower of the present invention, the following various excellent effects can be obtained.
[0034]
(I) The upper and lower wet / dry switching areas can be continuously supported while being isolated from the wet areas, and the filling material can be supported, and the hot water flowing down the normal wet areas in each stage can be supported in the intermediate hot water tank. Since it can be well dispersed and evenly sprayed from each sprinkling port to the lower wet area at all times, the use of part of the filler as a wet / dry switching area prevents the generation of white smoke as appropriate. Thus, it is possible to realize a chilled water tower that can be reduced, and as a result, the construction cost and size of the chilled water tower can be reduced.
[0035]
(II) Filling in which the isolation plate on the upper surface of the bottom of the intermediate hot water tank is held by the lower end of the filler forming the upper-stage wet / dry switching area to form the lower-stage wet / dry switching area If the upper end of the material is held by the isolation plate on the bottom lower surface of the intermediate hot water tank, it is possible to more reliably prevent the hot water from entering the wet / dry switching region at all times.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of an embodiment of the present invention.
2 is a perspective view of a hot water tank and an intermediate hot water tank in FIG. 1. FIG.
FIG. 3 is a plan view of the hot water tank of FIG. 2;
FIG. 4 is a schematic view showing an example of a conventional cold water tower.
FIG. 5 is a side view showing an example of a support structure for a filler in a conventional cold water tower.
[Explanation of symbols]
8 Outside air 12 Filler 16 Distribution space 17 Wet area 18 Wet / dry switching area 19 Intermediate hot water tank 20 Water spout 21 Isolation plate 22 Isolation plate 30 Water passage 31 Pedestal

Claims

A chilled water tower configured to divide the filler into a normal wet area and a wet / dry switching area that isolate the outside air from each other, and to spray both areas separately. In addition to arranging the fillers in multiple stages in the vertical direction so that the positions of the regions correspond to each other, an intermediate hot water tank having a large number of water spouts opened at the bottom between the upper and lower fillers is provided, and the bottom of the intermediate hot water tank The intermediate hot water tank is provided on the upper and lower surfaces with an isolation plate surrounding the water spout that communicates the upper and lower wet / dry switching areas with the upper and lower wet / dry switching areas continuously separated from the wet areas. A chilled water tower provided with a water-flowing pedestal for raising and supporting the lower end of a filler that forms an upper wet-type region on the upper surface of the bottom.

An isolation plate on the upper surface of the bottom of the intermediate hot water tank is held by the lower end of the filler forming the upper wet-dry switching region, and the upper end of the filler forming the lower wet-dry switching region The chilled water tower according to claim 1, wherein the chilled water tower is held by an isolation plate on a bottom lower surface of the intermediate hot water tank.

The chilled water tower according to claim 1 or 2, wherein the pedestal having a water flow structure is configured to be a trapezoidal side surface having a lower opening by a punching metal plate having a large number of water flow holes.