JP4491869B2

JP4491869B2 - Watering nozzle

Info

Publication number: JP4491869B2
Application number: JP30093799A
Authority: JP
Inventors: 攻後藤; 健一郎南; 勝敏芝田; 一樹櫻庭
Original assignee: IHI Corp
Current assignee: IHI Corp
Priority date: 1999-10-22
Filing date: 1999-10-22
Publication date: 2010-06-30
Anticipated expiration: 2019-10-22
Also published as: JP2001121041A

Description

【０００１】
【発明の属する技術分野】
本発明は、冷水塔の温水槽に適用する為の散水ノズルに関するものである。
【０００２】
【従来の技術】
従来より、温水槽の下面に開口した複数の散水口から温水槽直下の充填材に温水を散水し、該充填材の表面を流下する温水に外気を直接接触させて温水を冷却するようにした冷水塔が知られているが、この種の冷水塔においては、充填材で温水と直接接触して熱交換を行った外気が、昇温されると同時に湿度が略１００％の湿り空気となるので、この湿り空気をそのまま冷水塔頂部の排気口から外部に排出すると、冬期等における外気温度が低い場合に白煙を生じることがある。
【０００３】
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。
【０００４】
この為、近年においては、図１１に示す如く、ポリ塩化ビニル等の合成樹脂シートの表面に凹凸を付して成る充填材１を多数並列に起立させて備えることにより相互間に外気の通気流路２を確保した構造とし、しかも、互いに外気の通気流路２を隔絶した常時湿式領域３と湿式・乾式切替領域４とに夫々区分して交互に配置し、湿式・乾式切替領域４を常時湿式領域３とは別に散水し得るよう湿式・乾式切替領域４の各列に対応させて温水槽５下面に散水管６等を配設する一方、前記温水槽５の散水口７を常時湿式領域３にのみ連通するようにした冷水塔が提案されている。
【０００５】
即ち、このような冷水塔によれば、白煙が発生する虞れが無い時（外気温度が高い時）に、温水槽５内に温水８を供給すると共に、各散水管６に対し温水８を略均等に分配して供給すると、温水槽５下面の散水口７から充填材１の常時湿式領域３に対し温水８が散水されると共に、各散水管６下面の散水孔９から充填材１の湿式・乾式切替領域４に対しても温水８が散水されるので、常時湿式領域３と湿式・乾式切替領域４の両方に散水が行われて充填材１の全領域で外気による温水８の直接冷却が効果的に行われる。
【０００６】
一方、白煙が発生する虞れがある時（外気温度が低い時）に、各散水管６への温水８の供給を遮断すると、温水８が散水されている常時湿式領域３での外気による温水８の直接冷却と、温水８が散水されていない湿式・乾式切替領域４を流通する外気の乾式加熱とが同時に行われ、直接冷却によって生じる湿り空気に、乾式加熱によって生じる乾き空気が混合されて白煙の発生が防止されることになる。
【０００７】
ここで、図１１に図示した例における常時湿式領域３は、三列分の通気流路２を一単位として形成され、また、湿式・乾式切替領域４は、一列分の通気流路２を一単位として形成されており、前記湿式・乾式切替領域４を形成する充填材１の上端は、温水槽５下面に配設された散水管６の両側面に沿わされて上方へと延長されており、隣の常時湿式領域３からの温水８の侵入を阻止し得るようにしてある。
【０００８】
そして、温水槽５の散水口７から前記常時湿式領域３に温水８を散水するに際しては、従来より一般的な冷水塔の温水槽５について用いられてきた散水ノズル１０を使用して温水８の散水を行うことが考えられている。
【０００９】
即ち、図１２及び図１３に詳細に示す如く、従来の散水ノズル１０は、温水槽５の散水口７に嵌合掛止し得るように形成され且つ中心部に温水８を下方へ落とすノズル孔１１を有するノズルヘッド１２と、該ノズルヘッド１２下面両側から下方へ延びる一対のアーム部１３と、該各アーム部１３の最下端に保持されて前記ノズルヘッド１２のノズル孔１１の直下に配置されるようにした円錐形状を成す第一の分散プレート１４と、該第一の分散プレート１４の上方に前記各アーム部１３により保持されて配置され且つ中心部にオリフィス１５を開口したリング形状を成す第二の分散プレート１６と、該第二の分散プレート１６の上方に前記各アーム部１３により保持されて配置され且つ中心部に前記オリフィス１５より大きなオリフィス１７を開口したリング形状を成す第三の分散プレート１８とを備えた構造となっており、前記ノズルヘッド１２のノズル孔１１から落下した温水８が第一の分散プレート１４、第二の分散プレート１６、第三の分散プレート１８の各段で放射状に分散されて散水されるようになっている。
【００１０】
尚、図中のノズルヘッド１２の上端外周には、温水槽５の散水口７に嵌合した時に温水槽５の底面に対し掛止されるようにした鍔部１９が形成されており、ノズルヘッド１２における鍔部１９より下方の左右両側には、ノズルヘッド１２の上方への抜脱を防止する為の抜脱防止爪２０がノズルヘッド１２の半径方向に弾性変形し得るよう設けられ、また、ノズルヘッド１２の鍔部１９より下方の前後位置には、上向きに鋸歯形状を成して上下に延びる一対の抜脱防止ストッパ２１が夫々設けられている。
【００１１】
【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散水ノズル１０においては、図１４に平面的に示すように、三列分の通気流路２を一単位とした細長い長方形エリアを成す常時湿式領域３に対し、散水ノズル１０のノズル孔１１（図１３参照）を中心としたＡ，Ｂ，Ｃの同心円状に温水８がスカート状に散水されることになるので、例えば第二の分散プレート１６及び第三の分散プレート１８により図１４中にＢ，Ｃで示すような分散半径の大きな散水が行われた際に、常時湿式領域３を湿式・乾式切替領域４と隔絶するよう上方に延びている図１４中の左右両外側の充填材１に対し、前記Ｂ，Ｃの散水のうちの仮想線（二点鎖線）で示す散水分に相当する多量の温水８が衝突してしまい、三列の通気流路２のうちの幅方向外側の通気流路２にばかり偏った散水が成されて各通気流路２に対する均一な散水が阻害され、設計通りの温水冷却効果や白煙防止効果を得ることができなくなる虞れがあった。
【００１２】
本発明は上述の実情に鑑みてなしたもので、充填材の相互間の各通気流路に対し均一性の高い良好な散水を行い得る散水ノズルを提供することによって、散水むらによる冷水塔の性能低下を回避することを目的としている。
【００１３】
【課題を解決するための手段】
本発明は、冷水塔に備えられた温水槽の散水口に装着されて下方の充填材に対し温水槽内の温水を分散落下させるようにした散水ノズルであって、
温水槽の散水口に嵌合して掛止し得るよう形成され且つその中心部に温水を落下させる為のノズル孔を開口したノズルヘッドと、該ノズルヘッドの直下に連結されて前記ノズル孔から落下した温水を充填材の並び方向に水膜を成すようにして長方形エリアに対し分散させる温水分散具とを備え、
その温水分散具が、略平坦な分散面を上面に有して前記ノズルヘッドのノズル孔直下に位置するようにした第一の分散プレートと、該第一の分散プレートを挟んで充填材の並び方向と直角な向きに対向配置され且つ双方が下方向きに末広がり状に開くような対向傾斜面を有する一対のストッパと、該各ストッパの対向傾斜面における充填材並び方向の両端に形成した第一のガイドと、前記第一の分散プレートの上方に配置され且つその上面に充填材の並び方向から見て山型を成す断面を有して前記充填材の並び方向に延びる分散面を備え中心部にはノズルヘッドのノズル孔より小さな開口面積のオリフィスを有する第二の分散プレートと、該第二の分散プレートの分散面における充填材並び方向の両端に立設された第二のガイドとにより構成されていることを特徴とするものである。
【００１４】
従って、本発明では、ノズルヘッドのノズル孔から第二の分散プレートのオリフィス及びその周囲の分散面に温水が落下し、このうちのオリフィスに落下した温水は、そのまま第一の分散プレートの分散面上まで落ちて周囲に分散し、その大半が第一の分散プレートを挟んで対向配置された各ストッパの対向傾斜面に衝突して該対向傾斜面に沿い斜めに流下し、その両端の第一のガイドにより幅の拡がり角を規定された水膜を成して充填材の並び方向に分散され、他方、第二の分散プレートの分散面に落下した温水は、該分散面の山型の断面形状により充填材の並び方向と直角な向きの前後に振り分けられて夫々斜めに流下し、その両端の第二のガイドにより幅の拡がり角を規定された水膜を成して充填材の並び方向に分散されることになる。
【００１５】
このように充填材の並び方向に水膜を成すように温水を分散させれば、充填材の面に対し衝突するような向きに散水が成されなくなり、充填材の相互間に形成される各通気流路に対し均等に温水を振り分けて均一性の高い良好な散水を行うことが可能となるので、散水むらによる冷水塔の性能低下を回避することが可能となる。
【００１６】
また、本発明においては、第二の分散プレートの更に上方に配置され且つその上面に充填材の並び方向から見て山型を成す断面を有して前記充填材の並び方向に延びる分散面を備え中心部にはノズルヘッドのノズル孔より小さく且つ第二の分散プレートのオリフィスより大きな開口面積のオリフィスを有する第三の分散プレートと、該第三の分散プレートの分散面における充填材並び方向の両端に立設され且つ該分散面の下り方向に向け末広がり状に開くように形成した第三のガイドとを備えるようにしても良い。
【００１７】
このようにすれば、ノズルヘッドのノズル孔から落下した温水が、第二の分散プレートに落ちる前に第三のオリフィス及びその周囲の分散面に落下して該分散面の山型の断面形状により充填材の並び方向と直角な向きの前後に振り分けられて夫々斜めに流下し、その両端の第三のガイドにより幅の拡がり角を規定された水膜を成して充填材の並び方向に分散されることになるので、第一の分散プレート及びストッパと第二の分散プレートとにより形成される四層の水膜に第三の分散プレートによる二層の水膜を加えて計六層の水膜による散水を行うことが可能となる。
【００１８】
更に、ノズルヘッドの直下に温水分散具を連結するにあたっては、ノズルヘッド下面におけるノズル孔を挟んだ充填材並び方向の両端に下方向きに延びる一対のアーム部を設け、該各アーム部を介して温水分散具をノズルヘッドに連結することが好ましく、このようにすれば、ノズルヘッドのノズル孔から落下する温水と干渉させないように各アーム部を配置して温水分散具を支障なくノズルヘッド直下に連結することが可能となる。
【００１９】
尚、温水分散具の外形寸法が温水槽の散水口の口径内に収まるように構成することが好ましく、このようにすれば、温水槽の散水口に散水ノズルを装着するに際し、散水口に対し上方から温水分散具を挿通させ、そのままノズルヘッドを散水口に嵌合して掛止させるようにすれば済むので、散水ノズルの装着を温水槽内から極めて簡単に行うことが可能となり、作業性の悪い温水槽下面での装着作業が全く不要となる。
【００２０】
【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。
【００２１】
図１〜図８は本発明を実施する形態の一例を示すもので、図１１と同一の符号を付した部分は同一物を表わしている。
【００２２】
図１に示す如く、本形態例の散水ノズル２２においては、温水槽５の散水口７に嵌合して掛止し得るよう形成され且つその中心部に温水８を落下させる為のノズル孔２３（図３、図５、図６参照）を開口したノズルヘッド２４と、該ノズルヘッド２４の直下に連結されて前記ノズル孔２３から落下した温水８を充填材１の並び方向（図１における左右方向）に水膜を成すようにして長方形エリアに対し分散させる温水分散具２５とを備えて構成されており、該温水分散具２５は、その外形寸法が温水槽５の散水口７の口径内に収まるように構成されている。
【００２３】
そして、図２〜図８に前記散水ノズル２２についての詳細を示す如く、ここに図示されているノズルヘッド２４は、従来の散水ノズルのノズルヘッドと略同様に形成されており、その上端外周には、温水槽５の散水口７に嵌合した時に温水槽５の底面に対し掛止されるようにした鍔部２６が形成され、ノズルヘッド２４における鍔部２６より下方の左右両側には、ノズルヘッド２４の上方への抜脱を防止する為の抜脱防止爪２７がノズルヘッド２４の半径方向に弾性変形し得るよう設けられ、また、ノズルヘッド２４の鍔部２６より下方の前後位置には、上向きに鋸歯形状を成して上下に延びる一対の抜脱防止ストッパ２８が夫々設けられている。
【００２４】
また、ノズルヘッド２４の下面におけるノズル孔２３を挟んだ充填材１の並び方向の両端には、下方向きに延びる一対のアーム部２９が設けられており、該各アーム部２９を介して前記温水分散具２５がノズルヘッド２４に対し連結されるようになっている。
【００２５】
更に、前記温水分散具２５の具体的な構造につき以下に詳述すると、この温水分散具２５は、略平坦な分散面３０を上面に有して前記ノズルヘッド２４のノズル孔２３直下に位置するようにした第一の分散プレート３１と、該第一の分散プレート３１を挟んで充填材１の並び方向と直角な向き（図３及び図４における左右方向の向き）に対向配置され且つ双方が下方向きに末広がり状に開くような対向傾斜面３２を有する一対のストッパ３３と、該各ストッパ３３の対向傾斜面３２における充填材１の並び方向の両端に互いに下方向きに末広がり状に開くように形成した第一のガイド３４（特に図７参照）と、前記第一の分散プレート３１の上方に配置され且つその上面に充填材１の並び方向から見て山型を成す断面を有して前記充填材１の並び方向に延びる分散面３５（特に図３参照）を備え中心部にはノズルヘッド２４のノズル孔２３より小さな開口面積とした矩形状のオリフィス３６を有する第二の分散プレート３７と、該第二の分散プレート３７の分散面３５における充填材１の並び方向の両端に立設され且つ該分散面３５の下り方向に向け末広がり状に開くように形成した第二のガイド３８（特に図８参照）とにより構成されている。
【００２６】
ここで、第二の分散プレート３７の分散面３５が成す山型は、図示する如き蒲鉾型の曲面形状に仕上げることが好ましく、このような曲面形状を採用すれば、前記分散面３５に落下した温水８に余計な衝撃を与えずに円滑に水膜状に流し落とすことが可能である。
【００２７】
そして、第一の分散プレート３１は、第二の分散プレート３７の下面におけるオリフィス３６を挟んだ左右両端部から下方向きに延びる連結部３９を介して支持されており、また、各ストッパ３３の上端部は、第二の分散プレート３７の下面に対して連結され、更に、各アーム部２９の下端部は、第二のガイド３８の夫々の外側面に対して連結されている。
【００２８】
尚、第一の分散プレート３１及び第二の分散プレート３７における充填材１の並び方向の両端は、該並び方向と直角な向きから見て鋭角なエッジ部を成すように形成されており、この部分から水膜状に落下せずに表面をつたって各分散プレートの下面側に回り込んでしまうような流れが生じないようにしてある。
【００２９】
而して、このように構成された散水ノズル２２では、ノズルヘッド２４のノズル孔２３から第二の分散プレート３７のオリフィス３６及びその周囲の分散面３５に温水８が落下し、このうちのオリフィス３６に落下した温水８は、そのまま第一の分散プレート３１の分散面３０上まで落ちて周囲に分散するが、該分散面３０の左右両端部に向かう流れが連結部３９に堰き止められることにより、その温水８の大半が第一の分散プレート３１を挟んで対向配置された各ストッパ３３の対向傾斜面３２に衝突して該対向傾斜面３２に沿い斜めに流下し、その両端の第一のガイド３４により幅の拡がり角を規定された水膜を成して充填材１の並び方向に分散され、他方、第二の分散プレート３７の分散面３５に落下した温水８は、該分散面３５の山型の断面形状により充填材１の並び方向と直角な向きの前後に振り分けられて夫々斜めに流下し、その両端の第二のガイド３８により幅の拡がり角を規定された水膜を成して充填材１の並び方向に分散されることになる。
【００３０】
このように充填材１の並び方向に水膜を成すように温水８を分散させれば、充填材１の面に対し衝突するような向きに散水が成されなくなり、充填材１の相互間に形成される各通気流路２に対し均等に温水８を振り分けて均一性の高い良好な散水を行うことが可能となるので、散水むらによる冷水塔の性能低下を回避することが可能となる。
【００３１】
従って、上記形態例によれば、充填材１の相互間の各通気流路２に対し均一性の高い良好な散水を行うことができるので、例えば図１に示すように、三列分の通気流路２を一単位とした細長い長方形エリアを成す常時湿式領域３に対し均一性の高い散水を行って、設計通りの温水冷却効果や白煙防止効果を得ることができ、散水むらによる冷水塔の性能低下を回避することができる。
【００３２】
ただし、本形態例では、常時湿式領域３と湿式・乾式切替領域４とを区分して備えた白煙防止タイプの冷水塔の場合で例示しているが、このような領域区分を採用していない通常タイプの冷水塔に適用しても均一性の高い良好な散水を行い得て散水むらによる性能低下を回避することが勿論可能である。
【００３３】
また、図示の如きアーム部２９によりノズルヘッド２４の直下に温水分散具２５を連結するようにすれば、ノズルヘッド２４のノズル孔２３から落下する温水８と干渉させないように各アーム部２９を配置して温水分散具２５を支障なくノズルヘッド２４直下に連結することができる。
【００３４】
更に、前述したように、温水分散具２５の外形寸法が温水槽５の散水口７の口径内に収まるように構成すれば、温水槽５の散水口７に散水ノズル２２を装着するに際し、散水口７に対して上方から温水分散具２５を挿通させ、そのままノズルヘッド２４を散水口７に嵌合して掛止させるようにすれば済むので、散水ノズル２２の装着を温水槽５内から極めて簡単に行うことができ、作業性の悪い温水槽５下面での装着作業を全く不要とすることができる。
【００３５】
図９及び図１０は本発明の別の形態例を示すもので、第二の分散プレート３７の更に上方に第三の分散プレート４０を配置したものであり、この第三の分散プレート４０は、その上面に充填材１の並び方向から見て山型を成す断面を有して前記充填材１の並び方向に延びる分散面４１を備え、その中心部にはノズルヘッド２４のノズル孔２３より小さく且つ第二の分散プレート３７のオリフィス３６より大きな開口面積のオリフィス４２を有しており、該第三の分散プレート４０の分散面４１における充填材１の並び方向の両端には、前記分散面４１の下り方向に向け末広がり状に開くように第三のガイド４３が形成されている。
【００３６】
このようにすれば、ノズルヘッド２４のノズル孔２３から落下した温水８が、第二の分散プレート３７に落ちる前に第三の分散プレート４０のオリフィス４２及びその周囲の分散面４１に落下して該分散面４１の山型の断面形状により充填材１の並び方向と直角な向きの前後に振り分けられて夫々斜めに流下し、その両端の第三のガイド４３により幅の拡がり角を規定された水膜を成して充填材１の並び方向に分散されることになるので、第一の分散プレート３１及びストッパ３３と第二の分散プレート３７とにより形成される四層の水膜に第三の分散プレート４０による二層の水膜を加えて計六層の水膜による散水を行うことが可能となる。
【００３７】
尚、本発明の散水ノズルは、上述の形態例にのみ限定されるものではなく、例えばノズルヘッドは、温水槽の散水口に嵌合して掛止し得るよう形成され且つその中心部に温水を落下させる為のノズル孔を開口したものであれば良く、必ずしも図示の如き従来と同じ形状のノズルヘッドを採用しなくても良いこと、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。
【００３８】
【発明の効果】
上記した本発明の散水ノズルによれば、下記の如き種々の優れた効果を奏し得る。
【００３９】
（Ｉ）本発明の請求項１に記載の発明によれば、充填材の相互間の各通気流路に対し均一性の高い良好な散水を行うことができるので、散水むらによる冷水塔の性能低下を回避することができる。
【００４０】
（ＩＩ）本発明の請求項２に記載の発明によれば、第一の分散プレート及びストッパと第二の分散プレートとにより形成される四層の水膜に第三の分散プレートによる二層の水膜を加えて計六層の水膜による散水を行うことができる。
【００４１】
（ＩＩＩ）本発明の請求項３に記載の発明によれば、ノズルヘッドのノズル孔から落下する温水と干渉させないように各アーム部を配置して温水分散具を支障なくノズルヘッド直下に連結することができる。
【００４２】
（ＩＶ）本発明の請求項４に記載の発明によれば、温水槽の散水口に散水ノズルを装着するに際し、散水口に対し上方から温水分散具を挿通させ、そのままノズルヘッドを散水口に嵌合して掛止させるようにすれば済むので、散水ノズルの装着を温水槽内から極めて簡単に行うことができ、作業性の悪い温水槽下面での装着作業を全く不要とすることができる。
【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全体図である。
【図２】図１の散水ノズルの詳細を示す正面図である。
【図３】図２のＩＩＩ−ＩＩＩ方向の矢視図である。
【図４】図２のＩＶ−ＩＶ方向の矢視図である。
【図５】図４のＶ−Ｖ方向の矢視図である。
【図６】図２のＶＩ−ＶＩ方向の矢視図である。
【図７】図４のＶＩＩ−ＶＩＩ方向の矢視図である。
【図８】図２のＶＩＩＩ−ＶＩＩＩ方向の矢視図である。
【図９】本発明の別の形態例を示す正面図である。
【図１０】図９のＸ−Ｘ方向の矢視図である。
【図１１】従来例を示す全体図である。
【図１２】図１１の散水ノズルの詳細を示す正面図である。
【図１３】図１２のＸＩＩＩ−ＸＩＩＩ方向の矢視図である。
【図１４】従来の散水ノズルによる散水状態を平面的に示す説明図である。
【符号の説明】
１充填材
５温水槽
７散水口
８温水
２２散水ノズル
２３ノズル孔
２４ノズルヘッド
２５温水分散具
２９アーム部
３０分散面
３１第一の分散プレート
３２対向傾斜面
３３ストッパ
３４第一のガイド
３５分散面
３６オリフィス
３７第二の分散プレート
３８第二のガイド
３９連結部
４０第三の分散プレート
４１分散面
４２オリフィス
４３第三のガイド[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a watering nozzle for application to a hot water tank of a cold water tower.
[0002]
[Prior art]
Conventionally, warm water is sprinkled from a plurality of sprinkling openings opened on the lower surface of the hot water tank to the filler just below the hot water tank, and the outside water is directly contacted with the hot water flowing down the surface of the filler to cool the hot water. Although a cold water tower is known, in this type of cold water tower, the outside air that has been subjected to heat exchange in direct contact with the hot water by the filler is heated and simultaneously becomes humid air with a humidity of approximately 100%. Therefore, if this humid air is discharged as it is from the exhaust port at the top of the chilled water tower, white smoke may be generated when the outside air temperature is low in winter.
[0003]
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.
[0004]
For this reason, in recent years, as shown in FIG. 11, a large number of fillers 1 having unevenness formed on the surface of a synthetic resin sheet such as polyvinyl chloride are provided in parallel so that the flow of outside air between them is provided. The structure has a path 2 secured, and the wet / dry switching area 4 is always arranged by dividing it into a normal wet area 3 and a wet / dry switching area 4 that are separated from each other by an outside air flow path 2. A water spray pipe 6 and the like are arranged on the lower surface of the hot water tank 5 so as to correspond to each row of the wet / dry switching area 4 so that water can be sprinkled separately from the wet area 3, while the water spout 7 of the hot water tank 5 is always in the wet area. A chilled water tower that communicates only with No. 3 has been proposed.
[0005]
That is, according to such a cold water tower, when there is no possibility that white smoke is generated (when the outside air temperature is high), the hot water 8 is supplied into the hot water tank 5, and the hot water 8 is supplied to each water spray pipe 6. Is distributed substantially evenly, hot water 8 is sprinkled from the water spout 7 on the lower surface of the hot water tank 5 to the always wet area 3 of the filler 1 and the filler 1 from the sprinkling holes 9 on the lower surface of each water spray pipe 6. Since the warm water 8 is sprinkled also on the wet / dry switching area 4, the water is constantly sprayed in both the wet area 3 and the wet / dry switching area 4, and the warm water 8 by the outside air in all areas of the filler 1. Direct cooling is effected effectively.
[0006]
On the other hand, when there is a possibility that white smoke may be generated (when the outside air temperature is low), if the supply of the warm water 8 to each sprinkling pipe 6 is shut off, the warm water 8 is sprayed by the outside air in the constantly wet area 3. The direct cooling of the hot water 8 and the dry heating of the outside air flowing through the wet / dry switching region 4 where the hot water 8 is not sprinkled are simultaneously performed, and the dry air generated by the dry heating is mixed with the humid air generated by the direct cooling. This will prevent the generation of white smoke.
[0007]
Here, the always wet region 3 in the example shown in FIG. 11 is formed with three rows of ventilation channels 2 as one unit, and the wet / dry switching region 4 has one row of ventilation channels 2 as one unit. It is formed as a unit, and the upper end of the filler 1 forming the wet / dry switching region 4 is extended upward along the both side surfaces of the water spray pipe 6 disposed on the lower surface of the hot water tank 5. Intrusion of the hot water 8 from the adjacent always wet region 3 can be prevented.
[0008]
And when sprinkling hot water 8 from the sprinkling port 7 of the hot water tank 5 to the always wet region 3, the water nozzle 8 used for the hot water tank 5 of the conventional cold water tower is used to make the hot water 8 Watering is considered.
[0009]
That is, as shown in detail in FIGS. 12 and 13, the conventional watering nozzle 10 is formed so as to be able to be fitted and locked to the watering port 7 of the hot water tank 5 and has a nozzle hole for dropping the hot water 8 downward in the center. 11, a pair of arm portions 13 extending downward from both sides of the lower surface of the nozzle head 12, and held at the lowermost end of each arm portion 13 and disposed immediately below the nozzle holes 11 of the nozzle head 12. A first dispersion plate 14 having a conical shape, and a ring shape which is held and disposed above the first dispersion plate 14 by the arm portions 13 and has an orifice 15 at the center. A second dispersion plate 16 and an orifice 17 disposed above the second dispersion plate 16 by being held by the arm portions 13 and larger than the orifice 15 at the center. And a third dispersion plate 18 having an open ring shape, and the hot water 8 that has dropped from the nozzle holes 11 of the nozzle head 12 has a first dispersion plate 14, a second dispersion plate 16, Each stage of the third dispersion plate 18 is dispersed radially and sprayed.
[0010]
In addition, a flange portion 19 is formed on the outer periphery of the upper end of the nozzle head 12 in the figure so as to be hooked to the bottom surface of the hot water tank 5 when fitted to the water spout 7 of the hot water tank 5. On both the left and right sides below the flange portion 19 of the head 12, removal preventing claws 20 for preventing the nozzle head 12 from being pulled upward are provided so as to be elastically deformable in the radial direction of the nozzle head 12. A pair of anti-detachment stoppers 21 extending upward and downward in a sawtooth shape are provided at front and rear positions below the flange portion 19 of the nozzle head 12.
[0011]
[Problems to be solved by the invention]
However, in the conventional watering nozzle 10 as described above, as shown in a plan view in FIG. 14, the watering nozzle 3 is applied to the constantly wet region 3 that forms a long and narrow rectangular area with the ventilation channels 2 for three rows as a unit. Since the hot water 8 is sprayed in a skirt shape in concentric circles of A, B, and C around the 10 nozzle holes 11 (see FIG. 13), for example, the second dispersion plate 16 and the third dispersion plate 14, when water spraying with a large dispersion radius as shown by B and C in FIG. 14 is performed, the wet region 3 is always extended upward so as to isolate it from the wet / dry switching region 4. A large amount of hot water 8 corresponding to the water spray indicated by the phantom line (two-dot chain line) of the water sprays B and C collides with the filler 1 on both outer sides, and the three rows of the air flow channels 2 It is biased only to the ventilation channel 2 outside in the width direction Watering is uniform watering of each vent channel 2 is inhibited made, there is a possibility that it becomes impossible to obtain a hot water cooling effect or white smoke prevention effect as designed.
[0012]
The present invention has been made in view of the above circumstances, and by providing a watering nozzle capable of performing good watering with high uniformity for each aeration channel between fillers, The purpose is to avoid performance degradation.
[0013]
[Means for Solving the Problems]
The present invention is a watering nozzle that is attached to a watering port of a hot water tank provided in a cold water tower and is configured to disperse and drop the hot water in the hot water tank with respect to a lower filler,
A nozzle head that is formed so as to be fitted and hooked to a water spray port of the hot water tank and that has a nozzle hole for dropping hot water in the center thereof, and is connected to the nozzle hole directly below the nozzle head. A hot water disperser that disperses the dropped hot water in a rectangular area so as to form a water film in the direction of the filler;
The hot water disperser has a first dispersive plate having a substantially flat dispersive surface on the upper surface and positioned immediately below the nozzle holes of the nozzle head, and an array of fillers sandwiching the first disperse plate A pair of stoppers that are opposed to each other in a direction perpendicular to the direction and that have opposing inclined surfaces that open in a diverging manner downward, and a first formed on both ends of the opposing inclined surfaces of the respective stoppers in the direction of filler alignment. And a dispersion surface disposed above the first dispersion plate and having an upper surface having a chevron-shaped cross section when viewed from the arrangement direction of the filler and extending in the arrangement direction of the filler. Comprises a second dispersion plate having an orifice having an opening area smaller than the nozzle hole of the nozzle head, and second guides erected on both ends of the dispersion surface of the second dispersion plate in the direction in which the filler is arranged. And it is characterized in that they are.
[0014]
Therefore, in the present invention, the hot water falls from the nozzle hole of the nozzle head to the orifice of the second dispersion plate and the surrounding dispersion surface, and the hot water that has fallen to the orifice is directly used as the dispersion surface of the first dispersion plate. It falls to the top and disperses to the surroundings, and most of them collide with the opposing inclined surfaces of the stoppers arranged opposite to each other across the first dispersing plate and flow down obliquely along the opposing inclined surfaces, On the other hand, the hot water that has been dispersed in the direction in which the fillers are arranged in the direction in which the filler is arranged while forming a water film with a widening angle defined by the guides of the second dispersion plate is a mountain-shaped cross section of the dispersion surface. Depending on the shape, the material is distributed in front and back in a direction perpendicular to the direction in which the filler is arranged, and flows down obliquely, forming a water film with a widening angle defined by the second guides at both ends thereof, and the direction in which the filler is arranged Will be distributed to
[0015]
If hot water is dispersed so as to form a water film in the direction in which the fillers are arranged in this way, water spray will not be formed in such a direction as to collide with the surface of the filler, and each formed between the fillers. Since it is possible to distribute hot water evenly with respect to the aeration channel and perform good watering with high uniformity, it is possible to avoid a decrease in performance of the chilled water tower due to uneven watering.
[0016]
Further, in the present invention, a dispersion surface that is disposed further above the second dispersion plate and has a cross section that forms a mountain shape when viewed from the direction in which the filler is arranged and extends in the arrangement direction of the filler. And a third dispersion plate having an orifice having an opening area smaller than the nozzle hole of the nozzle head and larger than the orifice of the second dispersion plate in the central portion of the nozzle, and in the direction in which the fillers are arranged on the dispersion surface of the third dispersion plate You may make it provide the 3rd guide which was standingly arranged at both ends, and was formed so that it might open in the downward direction toward the downward direction of this dispersion surface.
[0017]
In this way, the hot water that has dropped from the nozzle hole of the nozzle head falls to the third orifice and the surrounding dispersion surface before falling to the second dispersion plate, so that the dispersion surface has a mountain-shaped cross-sectional shape. Distributed in the direction perpendicular to the packing material direction and flowed diagonally, and dispersed in the packing material direction by forming a water film with a widening angle defined by third guides at both ends. Therefore, a total of six layers of water are added to the four layers of water film formed by the first dispersion plate and stopper and the second dispersion plate by adding two layers of water film by the third dispersion plate. It becomes possible to perform watering with a membrane.
[0018]
Further, when connecting the hot water disperser directly under the nozzle head, a pair of arm portions extending downward are provided at both ends of the filler array direction across the nozzle holes on the lower surface of the nozzle head, It is preferable to connect the hot water disperser to the nozzle head, and in this way, each arm portion is arranged so as not to interfere with the hot water falling from the nozzle hole of the nozzle head so that the hot water disperser is directly below the nozzle head without any trouble. It becomes possible to connect.
[0019]
It should be noted that the outer dimensions of the hot water dispersing device are preferably configured so as to be within the diameter of the water spray port of the hot water tank, and in this way, when the water spray nozzle is attached to the water spray port of the hot water tank, The hot water disperser is inserted from above, and the nozzle head can be fitted to the watering port and hooked as it is, so it is possible to attach the watering nozzle very easily from the hot water tank, and workability is improved. The installation work on the lower surface of the hot water tank is completely unnecessary.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0021]
FIGS. 1-8 shows an example of embodiment which implements this invention, and the part which attached | subjected the code | symbol same as FIG. 11 represents the same thing.
[0022]
As shown in FIG. 1, in the watering nozzle 22 of this embodiment, the nozzle hole 23 is formed so as to be fitted and hooked to the watering port 7 of the hot water tank 5 and for dropping the hot water 8 in the center thereof. A nozzle head 24 having an opening (see FIGS. 3, 5 and 6) and hot water 8 which is connected directly below the nozzle head 24 and has dropped from the nozzle hole 23 are arranged in the direction in which the fillers 1 are arranged (left and right in FIG. 1). And a hot water disperser 25 that disperses the rectangular area so as to form a water film in the direction), and the hot water disperser 25 has an outer dimension within the diameter of the water spout 7 of the hot water tank 5. It is configured to fit in.
[0023]
As shown in detail in FIG. 2 to FIG. 8, the nozzle head 24 shown here is formed in substantially the same manner as the nozzle head of the conventional watering nozzle, and is formed on the outer periphery of the upper end thereof. Is formed with hook portions 26 that are hooked to the bottom surface of the hot water tank 5 when fitted to the water spout 7 of the hot water tank 5. An anti-extraction claw 27 for preventing the nozzle head 24 from being extracted upward is provided so as to be elastically deformable in the radial direction of the nozzle head 24, and at a front and rear position below the flange portion 26 of the nozzle head 24. Are provided with a pair of anti-extraction stoppers 28 which are formed in a sawtooth shape upward and extend vertically.
[0024]
In addition, a pair of arm portions 29 extending downward are provided at both ends of the packing material 1 in the lower surface of the nozzle head 24 across the nozzle holes 23, and the hot water is provided via the arm portions 29. The disperser 25 is connected to the nozzle head 24.
[0025]
Further, the specific structure of the hot water disperser 25 will be described in detail below. The hot water disperser 25 has a substantially flat dispersive surface 30 on the upper surface and is located immediately below the nozzle hole 23 of the nozzle head 24. The first dispersion plate 31 and the first dispersion plate 31 are arranged to face each other in the direction perpendicular to the direction in which the fillers 1 are arranged (the direction in the left-right direction in FIGS. 3 and 4). A pair of stoppers 33 having opposing inclined surfaces 32 that open downwardly in a divergent shape, and the opposite inclined surfaces 32 of the respective stoppers 33 open in a divergent manner downward toward each other in the direction in which the fillers 1 are arranged. The formed first guide 34 (refer to FIG. 7 in particular) and the first dispersion plate 31 arranged above the first dispersion plate 31 and having a cross section forming a mountain shape when viewed from the direction in which the fillers 1 are arranged. Of filler 1 A dispersion plane 35 (see in particular FIG. 3) the second distribution plate 37 having a rectangular orifice 36 in which a small opening area than the nozzle hole 23 of the nozzle head 24 in the center provided with extending fine direction, said second A second guide 38 (see FIG. 8 in particular) that is formed so as to stand up at both ends in the arrangement direction of the fillers 1 on the dispersion surface 35 of the dispersion plate 37 and to open toward the downward direction of the dispersion surface 35. It is comprised by.
[0026]
Here, the mountain shape formed by the dispersion surface 35 of the second dispersion plate 37 is preferably finished in a bowl-shaped curved surface shape as shown in the figure, and if such a curved surface shape is adopted, it falls to the dispersion surface 35. The hot water 8 can be smoothly poured into a water film without giving an extra impact.
[0027]
The first dispersion plate 31 is supported via connecting portions 39 extending downward from the left and right end portions sandwiching the orifice 36 on the lower surface of the second dispersion plate 37, and the upper ends of the stoppers 33. The portion is connected to the lower surface of the second dispersion plate 37, and the lower end portion of each arm portion 29 is connected to the respective outer surface of the second guide 38.
[0028]
In addition, both ends of the arrangement direction of the fillers 1 in the first dispersion plate 31 and the second dispersion plate 37 are formed so as to form acute edge portions when viewed from a direction perpendicular to the arrangement direction. A flow that does not fall from the portion into a water film but goes around the surface and wraps around the lower surface of each dispersion plate is prevented.
[0029]
Thus, in the watering nozzle 22 configured as described above, the hot water 8 falls from the nozzle hole 23 of the nozzle head 24 to the orifice 36 of the second dispersion plate 37 and the surrounding dispersion surface 35, and among these, the orifice The hot water 8 that has fallen on 36 falls directly onto the dispersion surface 30 of the first dispersion plate 31 and is dispersed to the surroundings. However, the flow toward the left and right ends of the dispersion surface 30 is blocked by the connecting portion 39. Most of the hot water 8 collides with the opposing inclined surfaces 32 of the respective stoppers 33 arranged opposite to each other across the first dispersion plate 31, and flows down obliquely along the opposing inclined surfaces 32, and the first water at both ends thereof. The hot water 8 that has been dispersed in the direction in which the fillers 1 are arranged in the direction in which the fillers 1 are arranged in a water film having a width expansion angle defined by the guide 34, while falling on the dispersion surface 35 of the second dispersion plate 37, Mountain of In accordance with the cross-sectional shape of the material, the material is distributed back and forth in a direction perpendicular to the direction in which the fillers 1 are arranged, and flows down obliquely, and is filled by forming a water film with a widening angle defined by the second guides 38 at both ends thereof. It will be distributed in the direction in which the materials 1 are arranged.
[0030]
If the hot water 8 is dispersed so as to form a water film in the direction in which the fillers 1 are arranged in this way, water is not formed in such a direction as to collide with the surface of the filler 1, and between the fillers 1. Since it is possible to distribute the hot water 8 evenly to each formed air flow path 2 and perform good watering with high uniformity, it is possible to avoid the performance deterioration of the cold water tower due to uneven watering.
[0031]
Therefore, according to the above-described embodiment, it is possible to perform good watering with high uniformity for each ventilation flow path 2 between the fillers 1. Therefore, for example, as shown in FIG. Water can be sprayed with high uniformity on the constantly wet area 3 that forms a long and narrow rectangular area with the air flow path 2 as a unit to obtain the warm water cooling effect and white smoke prevention effect as designed. It is possible to avoid performance degradation.
[0032]
However, in the present embodiment, a white smoke prevention type chilled water tower provided with a regular wet region 3 and a wet / dry switching region 4 is illustrated, but such a region division is adopted. Even if it is applied to a cold water tower of a normal type, it is of course possible to perform good watering with high uniformity and avoid performance degradation due to uneven watering.
[0033]
Further, if the hot water disperser 25 is connected directly below the nozzle head 24 by the arm portion 29 as shown, each arm portion 29 is disposed so as not to interfere with the hot water 8 falling from the nozzle hole 23 of the nozzle head 24. Thus, the hot water disperser 25 can be connected directly below the nozzle head 24 without hindrance.
[0034]
Furthermore, as described above, if the outer dimensions of the hot water disperser 25 are configured to be within the diameter of the water spout 7 of the hot water tank 5, the water spray nozzle 22 is attached to the water spout 7 of the hot water tank 5. The hot water disperser 25 is inserted into the water port 7 from above, and the nozzle head 24 is simply fitted into the water spray port 7 to be hooked. It can be performed easily, and the mounting work on the lower surface of the hot water tank 5 with poor workability can be dispensed with at all.
[0035]
FIGS. 9 and 10 show another embodiment of the present invention, in which a third dispersion plate 40 is disposed further above the second dispersion plate 37. A dispersion surface 41 having a cross section that forms a mountain shape when viewed from the arrangement direction of the filler 1 and extending in the arrangement direction of the filler 1 is provided on the upper surface, and is smaller than the nozzle holes 23 of the nozzle head 24 at the center. In addition, an orifice 42 having an opening area larger than the orifice 36 of the second dispersion plate 37 is provided, and the dispersion surface 41 is disposed at both ends of the dispersion surface 41 of the third dispersion plate 40 in the arrangement direction of the fillers 1. A third guide 43 is formed so as to open in a divergent shape toward the downward direction.
[0036]
In this way, the hot water 8 that has fallen from the nozzle hole 23 of the nozzle head 24 falls to the orifice 42 of the third dispersion plate 40 and the surrounding dispersion surface 41 before falling to the second dispersion plate 37. The dispersive surface 41 is distributed in front and rear in a direction perpendicular to the direction in which the fillers 1 are arranged due to the cross-sectional shape of the chevron, and flows down obliquely, and the width expansion angle is defined by the third guides 43 at both ends thereof. Since a water film is formed and dispersed in the direction in which the fillers 1 are arranged, the third water film formed by the first dispersion plate 31, the stopper 33, and the second dispersion plate 37 is formed on the third layer. It is possible to perform watering with a total of six layers of water film by adding two layers of water film by the dispersion plate 40.
[0037]
The watering nozzle of the present invention is not limited to the above-described embodiment. For example, the nozzle head is formed so as to be able to be fitted and hooked to the watering port of the hot water tank, and hot water is formed at the center thereof. As long as the nozzle hole for dropping the nozzle is opened, it is not always necessary to employ a nozzle head having the same shape as the conventional one as shown in the figure, and various other modifications are possible within the scope of the present invention. Of course, can be added.
[0038]
【The invention's effect】
According to the watering nozzle of the present invention described above, various excellent effects as described below can be obtained.
[0039]
(I) According to the invention described in claim 1 of the present invention, it is possible to perform good water sprinkling with high uniformity with respect to the respective air flow paths between the fillers. A decrease can be avoided.
[0040]
(II) According to the invention described in claim 2 of the present invention, the two-layer water film formed by the first dispersion plate, the stopper and the second dispersion plate is formed on the four-layer water film by the third dispersion plate. Water film can be added to spray water with a total of six water films.
[0041]
(III) According to the invention described in claim 3 of the present invention, each arm portion is arranged so as not to interfere with the hot water falling from the nozzle hole of the nozzle head, and the hot water dispersing device is connected directly below the nozzle head without any trouble. be able to.
[0042]
(IV) According to the invention described in claim 4 of the present invention, when the watering nozzle is attached to the watering port of the hot water tank, the hot water dispersing tool is inserted into the watering port from above, and the nozzle head is directly used as the watering port. Since it only needs to be fitted and hooked, the watering nozzle can be mounted very easily from the inside of the hot water tank, and the mounting work on the lower surface of the hot water tank with poor workability can be completely eliminated. .
[Brief description of the drawings]
FIG. 1 is an overall view showing an example of an embodiment of the present invention.
FIG. 2 is a front view showing details of the watering nozzle of FIG. 1;
3 is a view taken in the direction of arrows III-III in FIG.
4 is a view taken in the direction of arrows IV-IV in FIG. 2;
FIG. 5 is a view taken in the direction of arrows VV in FIG. 4;
6 is a view taken in the direction of arrows VI-VI in FIG. 2;
7 is a view taken in the direction of arrow VII-VII in FIG.
8 is a view taken in the direction of arrows VIII-VIII in FIG.
FIG. 9 is a front view showing another embodiment of the present invention.
10 is a view taken in the direction of arrows XX in FIG.
FIG. 11 is an overall view showing a conventional example.
12 is a front view showing details of the watering nozzle of FIG. 11. FIG.
13 is a view taken in the direction of arrows XIII-XIII in FIG.
FIG. 14 is an explanatory view showing a water spray state by a conventional water nozzle in a plan view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filling material 5 Hot water tank 7 Sprinkling port 8 Hot water 22 Sprinkling nozzle 23 Nozzle hole 24 Nozzle head 25 Hot water disperser 29 Arm part 30 Dispersing surface 31 First dispersive plate 32 Opposing inclined surface 33 Stopper 34 First guide 35 Dispersing surface 36 orifice 37 second dispersion plate 38 second guide 39 connecting portion 40 third dispersion plate 41 dispersion surface 42 orifice 43 third guide

Claims

A watering nozzle that is attached to a watering port of a hot water tank provided in the cold water tower and that causes the hot water in the hot water tank to be dispersed and dropped with respect to the filler below,
A nozzle head that is formed so as to be fitted and hooked to a water spray port of the hot water tank and that has a nozzle hole for dropping hot water in the center thereof, and is connected to the nozzle hole directly below the nozzle head. A hot water disperser that disperses the dropped hot water in a rectangular area so as to form a water film in the direction of the filler;
The hot water disperser has a first dispersive plate having a substantially flat dispersive surface on the upper surface and positioned immediately below the nozzle holes of the nozzle head, and an array of fillers sandwiching the first disperse plate A pair of stoppers that are opposed to each other in a direction perpendicular to the direction and that have opposing inclined surfaces that open in a diverging manner downward, and a first formed on both ends of the opposing inclined surfaces of the respective stoppers in the direction of filler alignment. And a dispersion surface disposed above the first dispersion plate and having an upper surface having a chevron-shaped cross section when viewed from the arrangement direction of the filler and extending in the arrangement direction of the filler. Comprises a second dispersion plate having an orifice having an opening area smaller than the nozzle hole of the nozzle head, and second guides erected on both ends of the dispersion surface of the second dispersion plate in the direction in which the filler is arranged. Watering nozzles, characterized by being.

Disposed further above the second dispersion plate and having a dispersive surface extending in the direction in which the fillers are arranged on the upper surface thereof as viewed from the direction in which the fillers are arranged, and a nozzle head in the center. A third dispersion plate having an orifice with an opening area smaller than the nozzle hole of the second dispersion plate and larger than the orifice of the second dispersion plate, and standing upright at both ends in the filler arranging direction on the dispersion surface of the third dispersion plate, and The watering nozzle according to claim 1, further comprising a third guide formed so as to open in a divergent shape toward the downward direction of the dispersion surface.

A pair of arm portions extending downward are provided at both ends of the filler array direction across the nozzle holes on the lower surface of the nozzle head, and a hot water disperser is connected to the nozzle head via each arm portion. The watering nozzle according to 1 or 2.

The watering nozzle according to claim 1, 2 or 3, wherein the outer dimensions of the hot water dispersing device are configured to be within the diameter of the watering port of the hot water tank.