JP3938712B2

JP3938712B2 - High-temperature regenerator and absorption chiller / heater

Info

Publication number: JP3938712B2
Application number: JP2002139688A
Authority: JP
Inventors: 保志船場; 研石川; 聡三宅; 雅博岡; 研治山田; 裕治小沢
Original assignee: Hitachi Ltd; Osaka Gas Co Ltd; Tokyo Gas Co Ltd; Toho Gas Co Ltd
Current assignee: Hitachi Ltd; Osaka Gas Co Ltd; Tokyo Gas Co Ltd; Toho Gas Co Ltd
Priority date: 2002-05-15
Filing date: 2002-05-15
Publication date: 2007-06-27
Anticipated expiration: 2022-05-15
Also published as: JP2003336931A

Description

【０００１】
【発明の属する技術分野】
本発明は、高温再生器及び吸収冷温水機に係り、特に面燃焼バーナを備えた高温再生器及び吸収冷温水機に好適なものである。
【０００２】
【従来の技術】
吸収冷温水機の高温再生器としては、国際公開番号ＷＯ９９／２４７６９号公報に記載されたものがある。具体的には、燃焼室を形成する内筒と、内筒との間に溶液を保持する液室を形成する外筒と、液室に連通し燃焼室内に配置した溶液管と、燃焼室の一方の側面に接続した面燃焼バーナと、燃焼室の他方の側面に接続した煙道ボックスと、煙道ボックスに接続した煙突と、を備えた吸収冷温水機の高温再生器がある。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来技術では、平面的な火炎形状を有する面燃焼バーナを用いているため、保炎面積が燃焼室空間に占める割合が大きくなり、燃焼室内の固有気柱振動数が火炎の微少振動に影響を及ぼす割合が大きくなる。そのため、従来技術では、火炎の微少振動と燃焼室内の固有気柱振動数とが一致して振動燃焼を生じ易くなるという課題があった。
【０００４】
本発明の第１の目的は、面燃焼バーナの火炎の微少振動と燃焼室内の固有気柱振動数とが一致して生じる振動燃焼を回避できる高温再生器及び吸収冷温水機を提供することにある。
【０００５】
本発明の第２の目的は、面燃焼バーナの火炎の微少振動と燃焼室内の固有気柱振動数とが一致して生じる振動燃焼を回避できると共に、バーナ用送風機の小型化、省資源化、定消費電力化が図れる吸収冷温水機の高温再生器を提供することにある。
【０００６】
【課題を解決するための手段】
前記第１の目的を達成するために、本発明は、燃焼室を形成する内筒と、前記内筒との間に溶液を保持する液室を形成する外筒と、前記液室に連通し前記燃焼室内に配置した溶液管と、前記燃焼室の一方の側面に接続した面燃焼バーナと、前記燃焼室の他方の側面に接続した排気通路と、前記排気通路に接続した煙突と、を備え、前記面燃焼バーナは前記燃焼室の一方の側面全体に燃焼面を有し、前記排気通路絞りは前記燃焼室の他方の側面全体にわたって有する吸収冷温水機の高温再生器において、前記面燃焼バーナの燃焼面に対向し且つ開口部を有する排気通路絞りを前記燃焼室と前記排気通路との間を仕切るように設けると共に、前記開口部から前記排気通路内で後流側に延びる筒部を設けて、前記排気通路絞り、前記筒部及び前記排気通路により消音器を構成したことにある。
【０００７】
前記第１の目的を達成するために、本発明は、吸収剤に冷媒を吸収させて生成された吸収溶液を加熱し、冷媒を蒸発させて吸収溶液を濃縮する高温再生器および低温再生器と、冷房時はこの低温再生器で生成された冷媒蒸気を凝縮させる凝縮器と、熱媒体を循環させる伝熱管を内装し前記凝縮器で生成された液冷媒または前記高温再生器で発生した蒸気冷媒を前記伝熱管内の熱媒体と熱交換させる蒸発器と、この蒸発器に連通し前記高温再生器および低温再生器で濃縮された吸収溶液に前記蒸発器から導かれる冷媒蒸気を吸収させる吸収器とを備える吸収冷温水機において、前記高温再生器は、燃焼室を形成する内筒と、前記内筒との間に溶液を保持する液室を形成する外筒と、前記液室に連通し前記燃焼室内に配置した溶液管と、前記燃焼室の一方の側面に接続した面燃焼バーナと、前記燃焼室の他方の側面に接続した排気通路と、前記排気通路に接続した煙突と、を備え、前記面燃焼バーナは前記燃焼室の一方の側面全体に燃焼面を有し、前記排気通路絞りは前記燃焼室の他方の側面全体にわたって有し、前記面燃焼バーナの燃焼面に対向し且つ開口部を有する排気通路絞りを前記燃焼室と前記排気通路との間を仕切るように設けると共に、前記開口部から前記排気通路内で後流側に延びる筒部を設けて、前記排気通路絞り、前記筒部及び前記排気通路により消音器を構成したことにある。
【０００８】
前記第２の目的を達成するために、本発明は、燃焼室を形成する内筒と、前記内筒との間に溶液を保持する液室を形成する外筒と、前記液室に連通し前記燃焼室内に配置した溶液管と、前記燃焼室の一方の側面に接続した面燃焼バーナと、前記燃焼室の他方の側面に接続した排気通路と、前記排気通路に接続した煙突と、を備え、前記面燃焼バーナは前記燃焼室の一方の側面全体に燃焼面を有し、前記排気通路絞りは前記燃焼室の他方の側面全体にわたって有する吸収冷温水機の高温再生器において、前記面燃焼バーナの燃焼面に対向して燃焼ガスの流れ方向に傾斜した面を有すると共に傾斜した面の中央に開口部を有する排気通路絞りを前記燃焼室と前記排気通路との間を仕切るように設けると共に、前記開口部から前記排気通路内で後流側に延びる筒部を設けて、前記排気通路絞り、前記筒部及び前記排気通路により消音器を構成したことにある。
【０００９】
なお、本発明のその他の手段は以下の記述から明らかにされる。
【００１０】
【発明の実施の形態】
以下、本発明の実施形態を図を用いて説明する。なお、第２実施例以降の実施例においては第１実施例と共通する構成の図示を一部を省略すると共に、重複する説明を省略する。各実施例の図における同一符号は同一物または相当物を示す。
【００１１】
本発明の第１実施例を図１から図５を参照しながら説明する。
【００１２】
まず、本実施例の吸収冷温水機を図１を参照しながら説明する。
【００１３】
図１に示すように吸収冷温水機は、主たる構成要素として、高温再生器１、低温再生器２０２、凝縮器２０３、蒸発器２０４、吸収器２０５、低温熱交換器２０６、高温熱交換器２０７、溶液循環ポンプ２０８、冷媒ポンプ２０９および加熱用のバーナ３０４を有している。
【００１４】
高温再生器１で冷媒蒸気を発生させ、この発生した冷媒蒸気を低温再生器２０２内の伝熱管２１１に通し、凝縮して管外を流下する溶液と熱交換させる。この伝熱管２１１を凝縮器２０３に接続する配管の途中には、絞り２１２が設けられている。凝縮器２０３の底部には、冷媒タンク２１３を設けている。
【００１５】
液冷媒を凝縮器２０３から蒸発器２０４に導く冷媒液管２１４の途中には、Ｕ字シールおよび絞り２１５が介在している。凝縮器２０３の気相部と蒸発器２０４とは、弁２１７を介して冷媒蒸気管２１６により接続されており、この冷媒蒸気管２１６の途中にはＵシール部が形成されている。冷媒管２１８が、冷媒ポンプ２０９の吐出側と冷媒散布装置２２０とをフロート弁２１９を介して連結している。
【００１６】
凝縮器２０３の下部には冷媒タンク２１３が設けられている。凝縮器２０３と吸収器２０５の上部に形成された冷媒受け２２４とを、冷媒ブロー弁２２２を介して冷媒ブロー管２２３が連結している。冷媒配管２２５は、冷媒蒸気管２１６のＵシールの底部と気泡ポンプ２２６の気泡吹出し部とを接続している。
【００１７】
気泡ポンプ２２６の気泡吹出し部の上部から延び、吸収器２０５の上部に配置した冷媒受け２２４に、気泡ポンプ２２６の揚液管２２７が開口している。蒸発器内の冷媒散布装置２２０に接続された冷媒管２１８の途中から、気泡ポンプ２２６の気泡吹出し部に接続される冷媒管２２８が分岐している。
【００１８】
低温熱交換器２０６とエジェクタポンプ２３０とは、溶液戻り管２２９で接続されている。溶液循環ポンプ２０８から低温熱交換器２０６へ溶液を送る配管の途中から、エジェクタポンプ２３０へ溶液を送る溶液管２３１が分岐している。エジェクタポンプ２３０から溶液散布装置２３３に、溶液管２３２を用いて溶液が導かれる。吸収器２０５の下部には溶液トレイ２３４が設けられており、この溶液トレイ２３４と吸収器下部の溶液タンク２３５が溶液管２３６により接続されている。
【００１９】
冷媒散布管２３７は、冷媒受け２２４からの冷媒を溶液トレイ２３４へ散布する。蒸発器２０４内には、蒸発伝熱管２５１が設置されている。この蒸発伝熱管２５１と室内機２５２との間を冷温水配管２５４で接続し、冷温水ポンプ２５３により冷温水を循環させている。吸収器２０５内には吸収伝熱管２５５が配置され、この吸収伝熱管２５５と凝縮器２０３内に配置された凝縮伝熱管２５６とが接続されている。そして、これら伝熱管と冷却塔２５７とを、冷却水配管２５９が接続している。そしてこの配管内の冷却水を、冷却水ポンプ２５８が循環させている。
【００２０】
このように構成した吸収冷温水機を冷房運転すると、以下のように動作する。冷房運転時には、弁２１７及び弁２２２は閉となっている。吸収器２０５の下部にある溶液タンク２３５の溶液は、溶液循環ポンプ２０８により低温熱交換器２０６に送られた後、一部は高温熱交換器２０７を通って高温再生器１へ送られ、残りは低温再生器２０２へ送られて散布装置２１０から散布される。
【００２１】
高温再生器１に送られた溶液は、バーナ３０４により加熱されて沸騰し、冷媒蒸気を発生する。発生した冷媒蒸気は低温再生器２０２に送られ、伝熱管２１１の管内で凝縮した後、絞り２１２を通って凝縮器２０３へ送られる。この時の凝縮熱は、散布装置２１０から散布されて伝熱管２１１の管外を流下する溶液を加熱して、再び冷媒蒸気を発生させる。発生した冷媒蒸気は凝縮器２０３へ送られ、凝縮伝熱管２５６内を流れる冷却水により冷却されて凝縮し、高温再生器１からの冷媒と合流して冷媒タンク２１３に溜められる。
【００２２】
高温再生器１で冷媒蒸気を発生して濃縮された濃溶液は、高温再生器１から溢れてフロートボックス３１０に流入し、その後高温熱交換器７に送られる。高温熱交換器７で吸収器２０５からの希溶液と熱交換して温度を下げた後、低温再生器２０２からの濃溶液と合流する。合流した濃溶液は、低温熱交換器２０６で吸収器２０５からの希溶液と熱交換してさらに温度を下げ、エジェクトポンプ２３０によって溶液戻り管２２９及び溶液管２３２を通って溶液散布装置２３３へ送られ、吸収器２０５内に散布される。散布された濃溶液は、吸収伝熱管２５５内を流れる冷却水により冷却されつつ蒸発器２０４からの冷媒蒸気を吸収して濃度が薄い稀溶液となる。稀溶液は溶液トレイ２３４に集められ、溶液管２３６を通って溶液タンク２３５に戻される。
【００２３】
凝縮器２０３の下部の冷媒タンク２１３に溜められた液冷媒は、冷媒タンク２１３から溢れ、冷媒液管２１４および絞り２１５を経由して蒸発器２０４に流入する。蒸発器２０４の下部に設けられた冷媒タンク２２１の液冷媒は、冷媒ポンプ２０９により冷媒管２１８およびフロート弁２１９を通って冷媒散布装置２２０に送られる。蒸発器２０４内の蒸発伝熱管２５１上に散布された液冷媒は、管群内を流れる冷水と熱交換して蒸発する。その際、冷水から蒸発潜熱を奪い冷凍作用が得られる。蒸発した冷媒は、吸収器２０５へ流出して、吸収器２０５内を流下する濃溶液に吸収される。
【００２４】
冷却塔２５７で冷却された冷却水は、冷却水ポンプ２５８により吸収器２０５に送られ、吸収伝熱管２５５で吸収熱を奪って温度上昇する。次で、凝縮器２０３に送られ凝縮伝熱管２５６で凝縮熱を奪い、さらに温度上昇する。その後、冷却水は冷却塔２５７に戻り、冷却される。蒸発器２０４内に配置された蒸発伝熱管２５１を流通する冷水は、冷媒の蒸発により蒸発潜熱を奪われる。そして、冷温水ポンプ２５３で室内機２５２に送られ、室内を冷房する。室内を冷房して温度上昇した冷水は、蒸発器２０４に戻され冷媒の蒸発により再度冷却される。
【００２５】
冷房運転中に冷房負荷がなくなると、吸収冷温水機に停止信号が発生する。そして、冷温水ポンプ２５３、冷却水ポンプ２５８、冷却塔２５７およびバーナ３０４がただちに停止し、冷媒ポンプ２０９も同時に停止する。ただし、溶液ポンプ２０８だけはサイクル内の濃溶液を希釈するために一定時間運転を継続させる。このとき、冷媒の凍結を防止するために、冷媒ブロー弁を２２２を開き、冷媒タンク２１３の冷媒を冷媒ブロー管２２３、冷媒受け２２４および冷媒散布管２３７を通って溶液トレイ２３４に導く。冷媒タンク２１３の冷媒は、この溶液トレイ２３４上に溜まった溶液と混合し、溶液を希釈する。溶液の濃度が低下すると、溶液の冷媒蒸気吸収能力が低下するので、冷媒及び冷温水の凍結を防止できる。
【００２６】
この図１に示した吸収冷温水機の暖房運転時の動作は、以下の通りである。暖房運転が選択されると、弁２１７及び弁２２２を開にする。冷却水ポンプ２５８を停止させ、吸収器２０５内の吸収伝熱管２５５及び凝縮器２０３内の凝縮伝熱管２５６への冷却水の通水を停止する。冷媒ポンプ２０９も停止させる。
【００２７】
吸収器２０５の下部に設けられた溶液タンク２３５内の溶液は、溶液循環ポンプ２０８により低温熱交換器２０６に送られる。その後、一部は高温熱交換器２０７を経て高温再生器１へ送られ、残りは低温再生器２０２の散布装置２１０から低温再生器２０２内に散布される。高温再生器１に送られた溶液は、バーナ３０４で加熱沸騰されて、冷媒蒸気を発生する。
【００２８】
発生した冷媒蒸気は、低温再生器２０２に送られ、この低温再生器２０２内に配置した伝熱管２１１の管内で凝縮した後、絞り２１２を通って凝縮器２０３へ送られる。このとき発生する凝縮熱は、散布装置２１０から散布され伝熱管２１１の管外を流下する溶液を加熱する。加熱された溶液は、再び冷媒蒸気を発生する。発生した冷媒蒸気は、凝縮器２０３へ送られる。凝縮器２０３内に配置された管群内には冷却水が流れていないので、冷媒蒸気は凝縮液化しないまま、弁２１７および冷媒蒸気管２１６を経由して蒸発器２０４に送られる。
【００２９】
冷媒蒸気の一部は、冷媒蒸気管２１６のＵシール部から冷媒管２２５、気泡ポンプ２２６の気泡吹出し部および揚液管２２７を経て、冷媒受け２２４に導かれる。その後、吸収器２０５内の冷媒散布管２３７から散布され、溶液トレイ２３４に溜められる。凝縮器２０３の液冷媒は、冷媒ブロー管２２３および冷媒ブロー弁２２２を経由して蒸発器２０４に導かれる。
【００３０】
蒸発器２０４では凝縮器２０３から導かれた冷媒蒸気が、蒸発伝熱管２５１を流れる温水と熱交換して凝縮液化する。このときの凝縮潜熱が温水を加熱し、暖房能力を発生する。凝縮液化した液冷媒は、冷媒タンク２２１に溜められ、冷媒管２１８から分岐した冷媒管２２８を通って気泡ポンプ２２６の気泡吹出し部へ送られる。気泡ポンプ２２６の作用により、液冷媒は揚液管２２７を上昇して冷媒受け２２４に流入し、冷媒散布管２３７から吸収器２０５の溶液トレイ２３４へ送られる。
【００３１】
高温再生器１で冷媒蒸気が分離して濃縮された濃溶液は、高温再生器１からフロートボックス３１０を経由して高温熱交換器２０７に導かれる。高温熱交換器２０７に流入した濃溶液は、高温熱交換器２０７で吸収器から導かれた希溶液と熱交換して温度を下げた後、低温再生器２０２から導かれた濃溶液と合流する。
【００３２】
合流した濃溶液は、低温熱交換器２０６で吸収器２０５から導かれた希溶液と熱交換してさらに温度を下げた後、エジェクタポンプ２３０によって溶液戻り管２２９及び溶液管２３２へと送られる。その後、濃溶液は溶液散布装置２３３に送られ、吸収器２０５内に散布される。吸収伝熱管２５５内には冷却水が流れていないので、散布された濃溶液は熱交換しないまま吸収伝熱管２５５を流下する。そして、溶液トレイ２３４に溜められた液冷媒と混合し、溶液管２３６を通って溶液タンク２３５に戻る。
【００３３】
蒸発器２０４内の蒸発伝熱管２５１で加熱された温水は、冷温水ポンプ２５３により室内機２５２に送られ、室内を暖房して温度低下した後、再び蒸発器２０４に戻る。
【００３４】
次に、この吸収冷温水機に用いる高温再生器１の詳細を図２から図５を参照しながら説明する。
【００３５】
高温再生器１は外筒１０１、内筒１０２、溶液管１０３、空気流入配管３０１、燃料ガス流入配管３０２、面燃焼バーナ１０４、溶液流入管１０５、溶液流出管１０６、蒸気流出管１０７、排気通路１０８、煙突１０９、排気通路絞り１２０、円筒状筒部１２１からなっている。
【００３６】
内筒１０２は外筒１０１内の下部に位置し、外筒１０１と二重筒構造になって液室１１２を形成している。両者１０２、１０１の間には溶液１１０が保持され、内筒１０２はこの溶液１１０に没している。
【００３７】
面燃焼バーナ１０４は、バーナ用送風機（図示せず）が装備されていると共に、内筒１０２に連通して外筒１０１の側面に取り付けられている。内筒１０２の内部は燃焼室１１１となっている。この面燃焼バーナ１０４は空気流入配管３０１より流入した空気と燃料ガス流入配管３０２より流入した燃料ガスとを混合して燃焼させる。内筒１０２の一方の側面（即ち、燃焼室１１１の上流端面である一方の側面）全体に燃焼ガスの流出部を有し、燃焼室１１１の一方の側面全体で燃焼する。
【００３８】
燃焼室１１１の上流（バーナ側）及び下流（反バーナ側）に、液室１１２における内筒１０２の上下に位置する部分に連通する複数の溶液管１０３がそれぞれ群として設置されている。溶液管１０３の内部は溶液１１０で満たされる。溶液管１０３は水平断面が円形をしており、図４で明らかなように千鳥状に配置されている。なお、この溶液管１０３は図５に示すように扁平形状をしていてもよい。この溶液管１０３が偏平形状の場合、扁平形状の直線部が平行になるように複数本一列に配列されている。各溶液管１０３の間は燃焼ガス通路となっている。燃焼ガス上流の溶液管１０３群の管表面にはフィンがついておらず、燃焼ガス下流の溶液管１０３群の管表面には表面にはフィンが設けられている。但し、図ではこのフィンを省略してある。
【００３９】
外筒１０１の上部背面には溶液流入管１０５及び溶液流出管１０６が設けられている。溶液流入管１０５は高温熱交換器２０７（図１参照）に接続され、溶液流出管１０６はフロートボックス３１０（図１参照）に接続されている。そして、容器流出管１０６は容器流入管１０５より若干下方に位置している。溶液１１０の液面高さは、容器流出管１０６の高さで決定される。なお、図１では容器流入管１０５及び容器流出管１０６を外筒の側面に設置した構造で示してあるが、これは全体構成の中で理解を容易にするためであって、実際には図２及び図３に示すように背面に設置されている。また、外筒１０１の上面には蒸気流出管１０７が設けられている。蒸気流出管１０７は低温再生器２０２内の伝熱管２１１（図１参照）に接続されている。
【００４０】
面燃焼バーナ１０４の火炎１０４ａは、燃焼室１１１の上流端面全体から内方横方向に延び、上流の隣り合う溶液管１０３に挟まれた流路を通過しつつ、冷却されながら燃焼し、放射と対流伝熱により溶液管１０３内の溶液１１０を加熱する。その後、燃焼反応を完了した燃焼ガスは下流の隣り合う溶液管１０３に挟まれた流路を通過しつつ、対流伝熱により溶液管１０３内の溶液１１０を加熱し、さらに排気通路絞り１２０の開口部１２０ａから円筒状筒部１２１を通過して絞られ、排気通路１０８に流入する。
【００４１】
この排気通路絞り１２０は燃焼室１１１と排気通路１０８との間に設けられると共に、面燃焼バーナ１０４の燃焼面に対向して内筒１０２の他方の側面（即ち、燃焼室１１１の下流端面）全体に有するように形成されている。この排気通路絞り１２０の中央部には燃焼ガスが通る開口部１２０ａが形成されている。この開口部１２０ａは、具体的には、排気通路絞り１２０の中心部、換言すれば燃焼室１１１下流端面の中心部に形成されている。
【００４２】
また、円筒状筒部１２１は排気通路１０８内に位置し、燃焼ガスの流れる方向に合致して開口部１２０ａから延びている。排気通路１０８に流入した燃焼ガスは排気通路内１０８内で拡大した後、排気通路１０８の上部に接続された煙突１０９を通って外へ放出される。
【００４３】
上述した排気通路絞り１２０、円筒状筒部１２１及び排気通路１０８により消音器が構成されるため、燃焼ガスの消音が図られると共に、燃焼室１１１内の固有気柱振動数を変えることができる。特に、排気通路絞り１２０を面燃焼バーナ１０４の燃焼面に対向して設けているため、火炎１０４ａの微小振動と燃焼室１１１の固有気柱振動数の一致による振動燃焼の抑制に効果的である。そして、燃焼室１１１の下流端面の中心部に位置して排気通路絞り１２０の開口部１２０ａを形成しているため、火炎１０４ａの微小振動と燃焼室１１１の固有気柱振動数の一致による振動燃焼の抑制に特に効果的である。
【００４４】
燃焼ガスによって加熱された溶液１１０は沸騰して冷媒蒸気を発生する。発生した冷媒蒸気は上昇流となって溶液管１０３内、外筒１０１と内筒１０２との間の流路を上昇し、溶液面上にでて、蒸気流出管１０７から低温再生器２０２内の伝熱管２１１に出ていく。一方、溶液は溶液流入管１０５を通って高温再生器１内に導かれる。また、高温再生器１内で加熱沸騰して濃度の濃くなった溶液は、溶液流出管１０６から外部のフロートボックス３１０に出て行く。
【００４５】
以上説明したように本実施例によれば、燃焼室１１１を通過した燃焼ガスの排気通路１０８に排気通路絞り１２０を設け、この排気通路絞り１２０に円筒状筒部１２１を取り付けたために、火炎１０４ａの微少振動と燃焼室内の固有気柱振動数とが一致による初期の振動の励起に対して、消音効果が働き、振動を増大しないように働くため、振動燃焼による自励振動を抑制することができる。すなわち、潜在音の範囲で消音することによって自励振動の元を断つことができるため、振動燃焼を回避できる。
【００４６】
次に、本発明の第２実施例を図６及び図７を参照しながら説明する。この第２実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００４７】
この第２実施例では、燃焼室１１１を通過した燃焼ガスの排気通路１０８に燃焼ガスの流れ方向に傾斜した面を有する排気通路絞り１２０を設け、この排気通路絞り１２０の傾斜した面の中央部に開口部１２０ａを設けるようにしている。係る排気通路絞り１２０を用いることによって、第１実施例と比較して燃焼ガスの圧力損失を低下させ、面燃焼バーナ１０４の送風機圧力を低く保つことができる。したがって、送風機の小型化、省資源化、低消費電力化が可能である。
【００４８】
次に、本発明の第３実施例を図８及び図９を参照しながら説明する。この第３実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００４９】
この第３実施例では、燃焼室１１１を通過した燃焼ガスの排気通路１０８に燃焼ガスの流れに傾斜したテーパ付円筒状筒部１２１を設けるようにしている。係るテーパ付円筒状筒部１２１を用いることによって、第１実施例と比較して燃焼ガスの圧力損失を低下させ、面燃焼バーナ１０４の送風機圧力を低く保つことができる。したがって、送風機の小型化、省資源化、低消費電力化が可能である。
【００５０】
次に、本発明の第４実施例を図１０及び図１１を参照しながら説明する。この第４実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００５１】
この第４実施例では、複数の開口部１２０ａを設けた排気通路絞り１２０を設け、このこの開口部１２０ａから延びる複数の円筒状筒部１２１を設けている。このように構成したことによって、第１実施例と比較して燃焼ガスの圧力損失を低下させ、面燃焼バーナ１０４の送風機圧力を低く保つことができる。したがって、送風機の小型化、省資源化、低消費電力化が可能である。
【００５２】
次に、本発明の第５実施例を図１２及び図１３を参照しながら説明する。この第５実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００５３】
この第５実施例では、排気通路１０８を貫通して排気通路１０８内に突出して接続した煙突１０９を設けている。このように排気通路内１０８内に煙突１０９を突出させたことによって、排気通路１０８における消音効果がより大きくなるため、第１実施例と比較して火炎の微少振動と煙突下流の固有気柱振動数とが一致して生じる振動燃焼をより確実に回避でき、より確実に正常燃焼させることが可能であるため、省資源、省エネルギに貢献できる。
【００５４】
次に、本発明の第６実施例を図１４及び図１５を参照しながら説明する。この第６実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００５５】
この第６実施例では、排気通路絞り１２０の開口部１２０ａと煙突１０９の入口部をつなぐ円筒状筒部１２１とすると共に、この円筒状筒部１２１の中間部分に小径の孔１２１ａを多数開口させるようにしている。このように排気通路絞り１２０に取り付けた円筒状筒部１２１を下流の煙突１０９とつなぎ、この円筒状筒部１２１に小径の孔１２１ａを多数開口させて排気通路１０８と連通させたために、第１実施例と比較して燃焼ガスの圧力損失を低下させ、面燃焼バーナの送風機圧力を低く保つことができる。したがって、送風機の小型化、省資源化、低消費電力化が可能である
次に、本発明の第７実施例を図１６及び図１７を参照しながら説明する。この第７実施例は、次に述べる通り第１実施例と相違するものであり、その他の点については第１実施例と同一である。
【００５６】
この第７実施例では、下流端にスリットが入った円筒状筒部１２１を設けている。これによって、第１実施例で取りきれない振動燃焼音に対して効果がある。
【００５７】
また、第２実施例から第７実施例において、溶液管１０３の断面は円形であるが、第１実施例の変形例として図５に示したような溶液管１０３の断面が扁平管である場合でも同様の効果がある。
【００５８】
なお、本発明の高温再生器は吸収冷温水機の高温再生器として説明されたが、ＪＩＳＢ８６２２−１９９４で示される吸収式冷凍機の高温再生器としても成り立つ。
【００５９】
【発明の効果】
以上の説明から明らかなように、本発明によれば、面燃焼バーナの火炎の微少振動と燃焼室内の固有気柱振動数とが一致して生じる振動燃焼を回避できる高温再生器及び吸収冷温水機を得ることができる。
【００６０】
また、本発明によれば、面燃焼バーナの火炎の微少振動と燃焼室内の固有気柱振動数とが一致して生じる振動燃焼を回避できると共に、バーナ用送風機の小型化、省資源化、定消費電力化が図れる吸収冷温水機の高温再生器を得ることができる。
【図面の簡単な説明】
【図１】本発明の第１実施例の吸収冷温水機の構成図である。
【図２】図１の吸収冷温水機における高温再生器の斜視図である。
【図３】図２の高温再生器の縦断面図である。
【図４】図２の高温再生器の横断面図である。
【図５】図２の高温再生器の変形例の横断面図である。
【図６】本発明の第２実施例の吸収冷温水機における高温再生器の縦断面図である。
【図７】図６の高温再生器の横断面図である。
【図８】本発明の第３実施例の吸収冷温水機における高温再生器の縦断面図である。
【図９】図８の高温再生器の横断面図である。
【図１０】本発明の第４実施例の吸収冷温水機における高温再生器の縦断面図である。
【図１１】図１０の高温再生器の横断面図である。
【図１２】本発明の第５実施例の吸収冷温水機における高温再生器の縦断面図である。
【図１３】図１２の高温再生器の横断面図である。
【図１４】本発明の第６実施例の吸収冷温水機における高温再生器の縦断面図である。
【図１５】図１４の高温再生器の横断面図である。
【図１６】本発明の第７実施例の吸収冷温水機における高温再生器の縦断面図である。
【図１７】図１６の高温再生器の横断面図である。
【符号の説明】
１…高温再生器、１０１…外筒、１０２…内筒、１０３…溶液管、１０４…面燃焼バーナ、１０５…溶液流入管、１０６…溶液流出管、１０７…蒸気流出管、１０８…排気通路、１０９…煙突、１１０…溶液、１１１…燃焼室、１１２…液室、１２０、２２０、２２１…排気通路絞り、１２１…円筒状筒部、３０１…空気流入配管、３０２…燃料ガス流入配管。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-temperature regenerator and an absorption chiller / heater, and is particularly suitable for a high-temperature regenerator and an absorption chiller / heater equipped with a surface combustion burner.
[0002]
[Prior art]
As a high temperature regenerator of an absorption chiller / heater, there is one described in International Publication No. WO99 / 24769. Specifically, an inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, a solution tube that communicates with the liquid chamber and is disposed in the combustion chamber, There is a high temperature regenerator for an absorption chiller / heater comprising a surface combustion burner connected to one side, a flue box connected to the other side of the combustion chamber, and a chimney connected to the flue box.
[0003]
[Problems to be solved by the invention]
However, since the conventional technology uses a planar combustion burner having a planar flame shape, the ratio of the flame holding area to the combustion chamber space increases, and the natural air column frequency in the combustion chamber is reduced to the minute vibration of the flame. The rate of influence increases. For this reason, the conventional technique has a problem that vibration combustion is likely to occur because the minute vibration of the flame coincides with the natural air column frequency in the combustion chamber.
[0004]
A first object of the present invention is to provide a high-temperature regenerator and an absorption chiller / heater that can avoid vibration combustion that occurs when the minute vibration of the flame of the surface combustion burner and the natural air column frequency in the combustion chamber coincide with each other. is there.
[0005]
The second object of the present invention is to avoid vibration combustion caused by the minute vibration of the flame of the surface combustion burner and the natural air column frequency in the combustion chamber, and to reduce the size and resource of the burner blower. The object is to provide a high-temperature regenerator for an absorption chiller / heater that can achieve constant power consumption.
[0006]
[Means for Solving the Problems]
In order to achieve the first object, the present invention includes an inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, and a fluid chamber that communicates with the liquid chamber. A solution tube disposed in the combustion chamber; a surface combustion burner connected to one side of the combustion chamber; an exhaust passage connected to the other side of the combustion chamber; A chimney connected to the exhaust passage; With The surface combustion burner has a combustion surface over one side surface of the combustion chamber, and the exhaust passage restriction extends over the other side surface of the combustion chamber. In the high-temperature regenerator of the absorption chiller / heater, an exhaust passage throttle facing the combustion surface of the surface combustion burner and having an opening is provided between the combustion chamber and the exhaust passage. To partition And a cylindrical portion extending from the opening to the downstream side in the exhaust passage. A silencer is constituted by the exhaust passage restrictor, the cylindrical portion and the exhaust passage. That is.
[0007]
In order to achieve the first object, the present invention provides a high-temperature regenerator and a low-temperature regenerator that heat an absorption solution generated by absorbing a refrigerant in an absorbent and evaporate the refrigerant to concentrate the absorption solution. During cooling, a condenser that condenses the refrigerant vapor generated in this low-temperature regenerator and a heat transfer tube that circulates the heat medium is provided, and the liquid refrigerant generated in the condenser or the vapor refrigerant generated in the high-temperature regenerator An evaporator that exchanges heat with the heat medium in the heat transfer tube, and an absorber that is connected to the evaporator and that absorbs refrigerant vapor introduced from the evaporator into an absorbing solution concentrated in the high-temperature regenerator and the low-temperature regenerator The high-temperature regenerator includes an inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, and the liquid chamber. A solution tube disposed in the combustion chamber, and the combustion While a surface combustion burner which is connected to the side of an exhaust passage connected to the other side of said combustion chamber A chimney connected to the exhaust passage, the surface combustion burner has a combustion surface on one entire side of the combustion chamber, and the exhaust passage restriction has an entire other side of the combustion chamber, Facing the combustion surface of the surface combustion burner And an exhaust passage restriction having an opening. Between the combustion chamber and the exhaust passage To partition When set up in In addition, A cylindrical portion extending from the opening to the wake side in the exhaust passage is provided. A silencer is constituted by the exhaust passage restrictor, the cylindrical portion and the exhaust passage. That is.
[0008]
In order to achieve the second object, the present invention includes an inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, and a liquid chamber that communicates with the liquid chamber. A solution tube disposed in the combustion chamber; a surface combustion burner connected to one side of the combustion chamber; an exhaust passage connected to the other side of the combustion chamber; A chimney connected to the exhaust passage; With The surface combustion burner has a combustion surface over one side surface of the combustion chamber, and the exhaust passage restriction extends over the other side surface of the combustion chamber. In the high-temperature regenerator of the absorption chiller / heater, the combustion chamber has an exhaust passage throttle having a surface inclined in the flow direction of the combustion gas facing the combustion surface of the surface combustion burner and having an opening at the center of the inclined surface. And between the exhaust passage To partition And a cylindrical portion extending from the opening to the downstream side in the exhaust passage. A silencer is constituted by the exhaust passage restrictor, the cylindrical portion and the exhaust passage. That is.
[0009]
The other means of the present invention will be clarified from the following description.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the second and subsequent embodiments, a part of the configuration that is common to the first embodiment is omitted, and a duplicate description is omitted. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent.
[0011]
A first embodiment of the present invention will be described with reference to FIGS.
[0012]
First, the absorption cold / hot water machine of a present Example is demonstrated, referring FIG.
[0013]
As shown in FIG. 1, the absorption chiller / heater has, as main components, a high-temperature regenerator 1, a low-temperature regenerator 202, a condenser 203, an evaporator 204, an absorber 205, a low-temperature heat exchanger 206, and a high-temperature heat exchanger 207. And a solution circulation pump 208, a refrigerant pump 209, and a heating burner 304.
[0014]
Refrigerant vapor is generated in the high-temperature regenerator 1, and the generated refrigerant vapor is passed through the heat transfer pipe 211 in the low-temperature regenerator 202 to condense and exchange heat with the solution flowing outside the tube. A throttle 212 is provided in the middle of the pipe connecting the heat transfer tube 211 to the condenser 203. A refrigerant tank 213 is provided at the bottom of the condenser 203.
[0015]
A U-shaped seal and a throttle 215 are interposed in the middle of the refrigerant liquid pipe 214 that guides the liquid refrigerant from the condenser 203 to the evaporator 204. The vapor phase part of the condenser 203 and the evaporator 204 are connected by a refrigerant vapor pipe 216 via a valve 217, and a U seal part is formed in the middle of the refrigerant vapor pipe 216. A refrigerant pipe 218 connects the discharge side of the refrigerant pump 209 and the refrigerant spray device 220 via a float valve 219.
[0016]
A refrigerant tank 213 is provided below the condenser 203. A refrigerant blow pipe 223 is connected to a condenser 203 and a refrigerant receiver 224 formed on the upper part of the absorber 205 via a refrigerant blow valve 222. The refrigerant pipe 225 connects the bottom part of the U seal of the refrigerant vapor pipe 216 and the bubble blowing part of the bubble pump 226.
[0017]
A liquid pumping tube 227 of the bubble pump 226 is opened to a refrigerant receiver 224 that extends from the upper portion of the bubble blowing portion of the bubble pump 226 and is disposed at the upper portion of the absorber 205. A refrigerant pipe 228 connected to the bubble blowing portion of the bubble pump 226 is branched from the middle of the refrigerant pipe 218 connected to the refrigerant spraying device 220 in the evaporator.
[0018]
The low temperature heat exchanger 206 and the ejector pump 230 are connected by a solution return pipe 229. A solution pipe 231 for sending the solution to the ejector pump 230 is branched from the middle of the pipe for sending the solution from the solution circulation pump 208 to the low-temperature heat exchanger 206. The solution is guided from the ejector pump 230 to the solution spraying device 233 using the solution tube 232. A solution tray 234 is provided below the absorber 205, and the solution tray 234 and a solution tank 235 below the absorber are connected by a solution tube 236.
[0019]
The refrigerant distribution tube 237 distributes the refrigerant from the refrigerant receiver 224 to the solution tray 234. An evaporation heat transfer tube 251 is installed in the evaporator 204. The evaporation heat transfer pipe 251 and the indoor unit 252 are connected by a cold / hot water pipe 254, and cold / hot water is circulated by a cold / hot water pump 253. An absorption heat transfer tube 255 is disposed in the absorber 205, and the absorption heat transfer tube 255 and a condensation heat transfer tube 256 disposed in the condenser 203 are connected. And the cooling water piping 259 has connected these heat exchanger tubes and the cooling tower 257. FIG. And the cooling water pump 258 circulates the cooling water in this piping.
[0020]
When the absorption chiller / heater configured as described above is cooled, it operates as follows. During the cooling operation, the valve 217 and the valve 222 are closed. The solution in the solution tank 235 at the lower part of the absorber 205 is sent to the low temperature heat exchanger 206 by the solution circulation pump 208, and then partly sent to the high temperature regenerator 1 through the high temperature heat exchanger 207 and the rest. Is sent to the low temperature regenerator 202 and sprayed from the spraying device 210.
[0021]
The solution sent to the high-temperature regenerator 1 is heated by the burner 304 to boil and generates refrigerant vapor. The generated refrigerant vapor is sent to the low-temperature regenerator 202, condensed in the pipe of the heat transfer pipe 211, and then sent to the condenser 203 through the throttle 212. The condensation heat at this time is sprayed from the spraying device 210 and heats the solution flowing out of the heat transfer tube 211 to generate refrigerant vapor again. The generated refrigerant vapor is sent to the condenser 203, cooled and condensed by the cooling water flowing in the condensation heat transfer tube 256, merged with the refrigerant from the high temperature regenerator 1, and stored in the refrigerant tank 213.
[0022]
The concentrated solution generated by generating the refrigerant vapor in the high temperature regenerator 1 overflows from the high temperature regenerator 1 and flows into the float box 310, and then sent to the high temperature heat exchanger 7. The high temperature heat exchanger 7 exchanges heat with the diluted solution from the absorber 205 to lower the temperature, and then merges with the concentrated solution from the low temperature regenerator 202. The combined concentrated solution is further heat-exchanged with the dilute solution from the absorber 205 by the low-temperature heat exchanger 206 to further reduce the temperature, and is sent to the solution spraying device 233 through the solution return pipe 229 and the solution pipe 232 by the eject pump 230. And dispersed in the absorber 205. The sprayed concentrated solution absorbs the refrigerant vapor from the evaporator 204 while being cooled by the cooling water flowing in the absorption heat transfer tube 255, and becomes a dilute solution having a low concentration. The dilute solution is collected in the solution tray 234 and returned to the solution tank 235 through the solution tube 236.
[0023]
The liquid refrigerant stored in the refrigerant tank 213 below the condenser 203 overflows from the refrigerant tank 213 and flows into the evaporator 204 via the refrigerant liquid pipe 214 and the throttle 215. The liquid refrigerant in the refrigerant tank 221 provided at the lower part of the evaporator 204 is sent to the refrigerant distribution device 220 through the refrigerant pipe 218 and the float valve 219 by the refrigerant pump 209. The liquid refrigerant sprayed on the evaporation heat transfer tube 251 in the evaporator 204 is evaporated by exchanging heat with cold water flowing in the tube group. At that time, the freezing action is obtained by removing the latent heat of evaporation from the cold water. The evaporated refrigerant flows out to the absorber 205 and is absorbed by the concentrated solution flowing down in the absorber 205.
[0024]
The cooling water cooled by the cooling tower 257 is sent to the absorber 205 by the cooling water pump 258, and the absorption heat is taken away by the absorption heat transfer tube 255 and the temperature rises. Next, the heat is sent to the condenser 203 and the condensation heat transfer tube 256 takes the heat of condensation, and the temperature further rises. Thereafter, the cooling water returns to the cooling tower 257 and is cooled. The cold water flowing through the evaporation heat transfer tube 251 disposed in the evaporator 204 is deprived of latent heat of evaporation due to evaporation of the refrigerant. And it is sent to the indoor unit 252 by the cold / hot water pump 253 to cool the room. The cold water whose temperature has risen after cooling the room is returned to the evaporator 204 and cooled again by evaporation of the refrigerant.
[0025]
When there is no cooling load during the cooling operation, a stop signal is generated in the absorption chiller / heater. And the cold / hot water pump 253, the cooling water pump 258, the cooling tower 257, and the burner 304 stop immediately, and the refrigerant | coolant pump 209 also stops simultaneously. However, only the solution pump 208 is operated for a certain period of time in order to dilute the concentrated solution in the cycle. At this time, in order to prevent the refrigerant from freezing, the refrigerant blow valve 222 is opened, and the refrigerant in the refrigerant tank 213 is guided to the solution tray 234 through the refrigerant blow pipe 223, the refrigerant receiver 224 and the refrigerant spray pipe 237. The refrigerant in the refrigerant tank 213 is mixed with the solution accumulated on the solution tray 234 to dilute the solution. When the concentration of the solution decreases, the refrigerant vapor absorption capacity of the solution decreases, so that the refrigerant and cold / hot water can be prevented from freezing.
[0026]
The operation during the heating operation of the absorption chiller / heater shown in FIG. 1 is as follows. When the heating operation is selected, the valve 217 and the valve 222 are opened. The cooling water pump 258 is stopped, and the cooling water flow to the absorption heat transfer tube 255 in the absorber 205 and the condensation heat transfer tube 256 in the condenser 203 is stopped. The refrigerant pump 209 is also stopped.
[0027]
The solution in the solution tank 235 provided at the lower part of the absorber 205 is sent to the low-temperature heat exchanger 206 by the solution circulation pump 208. Thereafter, a part is sent to the high-temperature regenerator 1 through the high-temperature heat exchanger 207, and the rest is sprayed into the low-temperature regenerator 202 from the spraying device 210 of the low-temperature regenerator 202. The solution sent to the high temperature regenerator 1 is heated and boiled by the burner 304 to generate refrigerant vapor.
[0028]
The generated refrigerant vapor is sent to the low-temperature regenerator 202, condensed in the tube of the heat transfer tube 211 arranged in the low-temperature regenerator 202, and then sent to the condenser 203 through the throttle 212. The condensation heat generated at this time heats the solution sprayed from the spraying device 210 and flowing down from the heat transfer tube 211. The heated solution again generates refrigerant vapor. The generated refrigerant vapor is sent to the condenser 203. Since the cooling water does not flow in the tube group arranged in the condenser 203, the refrigerant vapor is sent to the evaporator 204 via the valve 217 and the refrigerant vapor pipe 216 without being condensed and liquefied.
[0029]
A part of the refrigerant vapor is guided from the U seal part of the refrigerant vapor pipe 216 to the refrigerant receiver 224 via the refrigerant pipe 225, the bubble blowing part of the bubble pump 226 and the liquid raising pipe 227. Thereafter, the refrigerant is sprayed from the refrigerant spray tube 237 in the absorber 205 and stored in the solution tray 234. The liquid refrigerant in the condenser 203 is guided to the evaporator 204 via the refrigerant blow pipe 223 and the refrigerant blow valve 222.
[0030]
In the evaporator 204, the refrigerant vapor led from the condenser 203 exchanges heat with the hot water flowing through the evaporation heat transfer pipe 251 to be condensed and liquefied. The latent heat of condensation at this time heats the hot water and generates heating capacity. The condensed and liquefied liquid refrigerant is stored in the refrigerant tank 221 and sent to the bubble blowing portion of the bubble pump 226 through the refrigerant tube 228 branched from the refrigerant tube 218. By the action of the bubble pump 226, the liquid refrigerant rises in the liquid raising pipe 227 and flows into the refrigerant receiver 224, and is sent from the refrigerant spray pipe 237 to the solution tray 234 of the absorber 205.
[0031]
The concentrated solution obtained by separating and concentrating the refrigerant vapor in the high temperature regenerator 1 is guided from the high temperature regenerator 1 to the high temperature heat exchanger 207 via the float box 310. The concentrated solution flowing into the high-temperature heat exchanger 207 is heat-exchanged with the diluted solution introduced from the absorber by the high-temperature heat exchanger 207 to lower the temperature, and then merges with the concentrated solution introduced from the low-temperature regenerator 202. .
[0032]
The combined concentrated solution exchanges heat with the dilute solution introduced from the absorber 205 by the low-temperature heat exchanger 206 and further lowers the temperature, and then is sent to the solution return pipe 229 and the solution pipe 232 by the ejector pump 230. Thereafter, the concentrated solution is sent to the solution spraying device 233 and sprayed into the absorber 205. Since cooling water does not flow in the absorption heat transfer tube 255, the sprayed concentrated solution flows down the absorption heat transfer tube 255 without heat exchange. Then, it is mixed with the liquid refrigerant stored in the solution tray 234, returns to the solution tank 235 through the solution tube 236.
[0033]
The hot water heated by the evaporation heat transfer tube 251 in the evaporator 204 is sent to the indoor unit 252 by the cold / hot water pump 253, and the room is heated to lower the temperature, and then returns to the evaporator 204 again.
[0034]
Next, details of the high-temperature regenerator 1 used in the absorption chiller / heater will be described with reference to FIGS.
[0035]
The high temperature regenerator 1 includes an outer cylinder 101, an inner cylinder 102, a solution pipe 103, an air inflow pipe 301, a fuel gas inflow pipe 302, a surface combustion burner 104, a solution inflow pipe 105, a solution outflow pipe 106, a steam outflow pipe 107, and an exhaust passage. 108, a chimney 109, an exhaust passage restriction 120, and a cylindrical tube part 121.
[0036]
The inner cylinder 102 is located at the lower part in the outer cylinder 101 and has a double cylinder structure with the outer cylinder 101 to form a liquid chamber 112. The solution 110 is held between the two 102 and 101, and the inner cylinder 102 is submerged in the solution 110.
[0037]
The surface combustion burner 104 is equipped with a burner blower (not shown) and is attached to the side surface of the outer cylinder 101 in communication with the inner cylinder 102. The inside of the inner cylinder 102 is a combustion chamber 111. The surface combustion burner 104 mixes and burns the air flowing in from the air inflow pipe 301 and the fuel gas flowing in from the fuel gas inflow pipe 302. One side surface of the inner cylinder 102 (that is, one side surface that is the upstream end surface of the combustion chamber 111) has a combustion gas outflow portion, and combustion is performed on the entire one side surface of the combustion chamber 111.
[0038]
A plurality of solution pipes 103 communicating with the upper and lower portions of the inner cylinder 102 in the liquid chamber 112 are installed as a group upstream (burner side) and downstream (counter burner side) of the combustion chamber 111. The inside of the solution tube 103 is filled with the solution 110. The solution tubes 103 have a circular horizontal cross section and are arranged in a staggered manner as is apparent from FIG. The solution tube 103 may have a flat shape as shown in FIG. When the solution tubes 103 have a flat shape, a plurality of the solution tubes 103 are arranged in a row so that the straight portions of the flat shape are parallel to each other. A combustion gas passage is formed between the solution tubes 103. Fins are not attached to the tube surface of the solution tube 103 group upstream of the combustion gas, and fins are provided on the surface of the tube surface of the solution tube 103 group downstream of the combustion gas. However, this fin is omitted in the figure.
[0039]
A solution inflow pipe 105 and a solution outflow pipe 106 are provided on the upper rear surface of the outer cylinder 101. The solution inflow pipe 105 is connected to a high-temperature heat exchanger 207 (see FIG. 1), and the solution outflow pipe 106 is connected to a float box 310 (see FIG. 1). The container outflow pipe 106 is located slightly below the container inflow pipe 105. The liquid level of the solution 110 is determined by the height of the container outflow pipe 106. In FIG. 1, the container inflow pipe 105 and the container outflow pipe 106 are shown as being installed on the side surface of the outer cylinder, but this is for ease of understanding in the overall configuration. As shown in FIG. 2 and FIG. A steam outflow pipe 107 is provided on the upper surface of the outer cylinder 101. The steam outlet pipe 107 is connected to a heat transfer pipe 211 (see FIG. 1) in the low temperature regenerator 202.
[0040]
The flame 104a of the surface combustion burner 104 extends inward and laterally from the entire upstream end face of the combustion chamber 111, passes through a flow path sandwiched between adjacent upstream solution tubes 103, burns while being cooled, and emits radiation and The solution 110 in the solution tube 103 is heated by convection heat transfer. Thereafter, the combustion gas that has completed the combustion reaction passes through a flow path sandwiched between adjacent solution pipes 103 downstream, heats the solution 110 in the solution pipe 103 by convection heat transfer, and further opens the exhaust passage throttle 120. The portion 120 a is throttled through the cylindrical tube portion 121 and flows into the exhaust passage 108.
[0041]
The exhaust passage restrictor 120 is provided between the combustion chamber 111 and the exhaust passage 108, and faces the combustion surface of the surface combustion burner 104, and the other side surface of the inner cylinder 102 (that is, the downstream end surface of the combustion chamber 111) It is formed to have. An opening 120a through which combustion gas passes is formed at the center of the exhaust passage throttle 120. Specifically, the opening 120 a is formed at the center of the exhaust passage throttle 120, in other words, at the center of the downstream end surface of the combustion chamber 111.
[0042]
The cylindrical tube 121 is located in the exhaust passage 108 and extends from the opening 120a so as to match the flow direction of the combustion gas. The combustion gas that has flowed into the exhaust passage 108 expands in the exhaust passage 108 and is then discharged outside through a chimney 109 connected to the upper portion of the exhaust passage 108.
[0043]
Since the silencer is configured by the exhaust passage throttle 120, the cylindrical tube portion 121, and the exhaust passage 108 described above, the combustion gas can be silenced and the natural air column frequency in the combustion chamber 111 can be changed. In particular, since the exhaust passage restriction 120 is provided facing the combustion surface of the surface combustion burner 104, it is effective in suppressing vibration combustion due to the coincidence of the minute vibration of the flame 104a and the natural air column frequency of the combustion chamber 111. . Since the opening 120a of the exhaust passage restriction 120 is formed at the center of the downstream end face of the combustion chamber 111, the vibration combustion is caused by the coincidence of the minute vibration of the flame 104a and the natural air column frequency of the combustion chamber 111. It is particularly effective in suppressing
[0044]
The solution 110 heated by the combustion gas boils and generates refrigerant vapor. The generated refrigerant vapor becomes an upward flow and rises in the solution pipe 103, the flow path between the outer cylinder 101 and the inner cylinder 102, and comes out on the solution surface from the vapor outlet pipe 107 into the low temperature regenerator 202. It goes out to the heat transfer tube 211. On the other hand, the solution is introduced into the high temperature regenerator 1 through the solution inflow pipe 105. In addition, the solution which has been heated and boiled in the high-temperature regenerator 1 and has a high concentration goes out from the solution outlet pipe 106 to the external float box 310.
[0045]
As described above, according to the present embodiment, the exhaust passage throttle 120 is provided in the exhaust passage 108 for the combustion gas that has passed through the combustion chamber 111, and the cylindrical tube portion 121 is attached to the exhaust passage throttle 120. In order to suppress the self-excited vibration due to vibration combustion, the noise suppression effect works and does not increase the vibration against the initial vibration excitation due to the coincidence of the minute vibration of the gas and the natural air column frequency in the combustion chamber. it can. That is, since the source of self-excited vibration can be cut off by silencing in the range of the latent sound, vibration combustion can be avoided.
[0046]
Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0047]
In the second embodiment, an exhaust passage throttle 120 having a surface inclined in the flow direction of the combustion gas is provided in the exhaust passage 108 of the combustion gas that has passed through the combustion chamber 111, and the central portion of the inclined surface of the exhaust passage restriction 120 is provided. An opening 120a is provided at the top. By using the exhaust passage restriction 120, the pressure loss of the combustion gas can be reduced compared to the first embodiment, and the blower pressure of the surface combustion burner 104 can be kept low. Therefore, it is possible to reduce the size of the blower, save resources, and reduce power consumption.
[0048]
Next, a third embodiment of the present invention will be described with reference to FIGS. The third embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0049]
In the third embodiment, a tapered cylindrical cylinder 121 inclined to the flow of the combustion gas is provided in the exhaust passage 108 for the combustion gas that has passed through the combustion chamber 111. By using such a tapered cylindrical cylinder 121, the pressure loss of the combustion gas can be reduced and the blower pressure of the surface combustion burner 104 can be kept low as compared with the first embodiment. Therefore, it is possible to reduce the size of the blower, save resources, and reduce power consumption.
[0050]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. The fourth embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0051]
In the fourth embodiment, an exhaust passage throttle 120 having a plurality of openings 120a is provided, and a plurality of cylindrical tube portions 121 extending from the openings 120a are provided. By comprising in this way, the pressure loss of combustion gas can be reduced compared with 1st Example, and the air blower pressure of the surface combustion burner 104 can be kept low. Therefore, it is possible to reduce the size of the blower, save resources, and reduce power consumption.
[0052]
Next, a fifth embodiment of the present invention will be described with reference to FIGS. The fifth embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0053]
In the fifth embodiment, a chimney 109 that penetrates the exhaust passage 108 and protrudes into the exhaust passage 108 is provided. By projecting the chimney 109 into the exhaust passage 108 in this way, the noise reduction effect in the exhaust passage 108 is further increased. Therefore, compared with the first embodiment, the minute vibration of the flame and the natural air column vibration downstream of the chimney Vibratory combustion that occurs when the numbers coincide with each other can be avoided more reliably, and normal combustion can be performed more reliably, thereby contributing to resource and energy savings.
[0054]
Next, a sixth embodiment of the present invention will be described with reference to FIGS. The sixth embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0055]
In the sixth embodiment, a cylindrical tube 121 connecting the opening 120a of the exhaust passage throttle 120 and the inlet of the chimney 109 is formed, and a large number of small-diameter holes 121a are opened in an intermediate portion of the cylindrical tube 121. I am doing so. Since the cylindrical cylinder 121 attached to the exhaust passage restrictor 120 is connected to the downstream chimney 109 and a plurality of small-diameter holes 121a are opened in the cylindrical cylinder 121 to communicate with the exhaust passage 108, the first Compared with the embodiment, the pressure loss of the combustion gas can be reduced, and the blower pressure of the surface combustion burner can be kept low. Therefore, it is possible to reduce the size of the blower, save resources, and reduce power consumption.
Next, a seventh embodiment of the present invention will be described with reference to FIGS. The seventh embodiment is different from the first embodiment as described below, and is otherwise the same as the first embodiment.
[0056]
In the seventh embodiment, a cylindrical tube 121 having a slit at the downstream end is provided. This is effective against vibration combustion noise that cannot be completely obtained in the first embodiment.
[0057]
In the second to seventh embodiments, the solution tube 103 has a circular cross section. However, as a modification of the first embodiment, the solution tube 103 has a flat cross section as shown in FIG. But it has the same effect.
[0058]
In addition, although the high temperature regenerator of this invention was demonstrated as a high temperature regenerator of an absorption chiller / heater, it can also be realized as a high temperature regenerator of an absorption refrigerator shown in JISB8622-1994.
[0059]
【The invention's effect】
As is apparent from the above description, according to the present invention, the high-temperature regenerator and the absorption cold / hot water that can avoid the vibration combustion caused by the minute vibration of the flame of the surface combustion burner and the natural air column frequency in the combustion chamber coincide with each other. You can get a chance.
[0060]
Further, according to the present invention, it is possible to avoid vibration combustion that occurs when the minute vibration of the flame of the surface combustion burner and the natural air column frequency in the combustion chamber coincide with each other, and the burner blower can be downsized, resource-saving, and constant. A high-temperature regenerator for an absorption chiller / heater that can reduce power consumption can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an absorption chiller / heater according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a high-temperature regenerator in the absorption chiller / heater of FIG.
FIG. 3 is a longitudinal sectional view of the high-temperature regenerator of FIG.
4 is a cross-sectional view of the high temperature regenerator of FIG.
5 is a cross-sectional view of a modification of the high temperature regenerator of FIG.
FIG. 6 is a longitudinal sectional view of a high temperature regenerator in an absorption chiller / heater according to a second embodiment of the present invention.
7 is a cross-sectional view of the high temperature regenerator of FIG.
FIG. 8 is a longitudinal sectional view of a high temperature regenerator in an absorption chiller / heater according to a third embodiment of the present invention.
9 is a cross-sectional view of the high temperature regenerator of FIG.
FIG. 10 is a longitudinal sectional view of a high temperature regenerator in an absorption chiller / heater according to a fourth embodiment of the present invention.
11 is a cross-sectional view of the high temperature regenerator of FIG.
FIG. 12 is a longitudinal sectional view of a high-temperature regenerator in an absorption chiller / heater according to a fifth embodiment of the present invention.
13 is a cross-sectional view of the high temperature regenerator of FIG.
FIG. 14 is a longitudinal sectional view of a high-temperature regenerator in an absorption chiller / heater according to a sixth embodiment of the present invention.
15 is a cross-sectional view of the high temperature regenerator of FIG.
FIG. 16 is a longitudinal sectional view of a high-temperature regenerator in an absorption chiller / heater according to a seventh embodiment of the present invention.
FIG. 17 is a cross-sectional view of the high temperature regenerator of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... High temperature regenerator, 101 ... Outer cylinder, 102 ... Inner cylinder, 103 ... Solution pipe, 104 ... Surface combustion burner, 105 ... Solution inflow pipe, 106 ... Solution outflow pipe, 107 ... Steam outflow pipe, 108 ... Exhaust passage, DESCRIPTION OF SYMBOLS 109 ... Chimney, 110 ... Solution, 111 ... Combustion chamber, 112 ... Liquid chamber, 120, 220, 221 ... Exhaust passage throttle, 121 ... Cylindrical cylinder part, 301 ... Air inflow piping, 302 ... Fuel gas inflow piping

Claims

An inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, a solution tube that communicates with the liquid chamber and is disposed in the combustion chamber, and one of the combustion chambers A surface combustion burner connected to the side surface of the combustion chamber, an exhaust passage connected to the other side surface of the combustion chamber, and a chimney connected to the exhaust passage ,
In the high-temperature regenerator of an absorption chiller / heater, the surface combustion burner has a combustion surface on one entire side surface of the combustion chamber, and the exhaust passage throttle has the entire other side surface of the combustion chamber .
An exhaust passage restriction facing the combustion surface of the surface combustion burner and having an opening is provided so as to partition the combustion chamber and the exhaust passage, and extends from the opening to the downstream side in the exhaust passage. A high-temperature regenerator for an absorption chiller / heater having a cylindrical portion and a silencer configured by the exhaust passage throttle, the cylindrical portion, and the exhaust passage .

2. The high-temperature regenerator for an absorption chiller / heater according to claim 1, wherein the opening is formed in a central portion of the exhaust passage throttle.

An inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, a solution tube that communicates with the liquid chamber and is disposed in the combustion chamber, and one of the combustion chambers A surface combustion burner connected to the side surface of the combustion chamber, an exhaust passage connected to the other side surface of the combustion chamber, and a chimney connected to the exhaust passage ,
In the high-temperature regenerator of an absorption chiller / heater, the surface combustion burner has a combustion surface on one entire side surface of the combustion chamber, and the exhaust passage throttle has the entire other side surface of the combustion chamber .
An exhaust passage throttle having a surface inclined in the flow direction of the combustion gas facing the combustion surface of the surface combustion burner and having an opening at the center of the inclined surface is partitioned between the combustion chamber and the exhaust passage. And a cylindrical portion extending from the opening to the downstream side in the exhaust passage, and a silencer is constituted by the exhaust passage throttle, the cylindrical portion, and the exhaust passage. High temperature regenerator of water machine.

2. The high-temperature regenerator for an absorption chiller / heater according to claim 1 , wherein the tubular portion having a taper extending in a small diameter from the opening to the downstream side in the exhaust passage is provided.

According to claim 1, wherein with kicking setting the exhaust passage aperture having opposed and the plurality of openings in the combustion surface of the surface combustion burner, a plurality of the extending rearwardly downstream side from said plurality of openings in said exhaust passage A high-temperature regenerator of an absorption chiller / heater characterized by providing a cylindrical portion.

2. The high-temperature regenerator for an absorption chiller / heater according to claim 1 , wherein a chimney is provided on the downstream side of the exhaust passage.

In Claim 1 , a chimney is provided on the downstream side of the exhaust passage, and further, the cylindrical portion is provided which connects the inlet portion of the chimney from the opening and opens a plurality of small-diameter holes in the middle thereof. High temperature regenerator of absorption chiller / heater.

2. The high-temperature regenerator for an absorption chiller / heater according to claim 1 , wherein the tubular portion extending from the opening to the downstream side in the exhaust passage and having a slit at the tip is provided.

A high-temperature regenerator and a low-temperature regenerator that heats the absorption solution generated by absorbing the refrigerant in the absorbent and evaporates the refrigerant to concentrate the absorption solution, and the refrigerant vapor generated in this low-temperature regenerator during cooling A condenser for condensing, and an evaporator for heat-exchange of the liquid refrigerant generated in the condenser or the vapor refrigerant generated in the high-temperature regenerator with the heat medium in the heat-transfer pipe, with a heat-transfer pipe circulating the heat medium. In an absorption chiller / heater equipped with an absorber that communicates with the evaporator and absorbs the refrigerant vapor introduced from the evaporator into the absorbing solution concentrated in the high-temperature regenerator and the low-temperature regenerator,
The high temperature regenerator is
An inner cylinder that forms a combustion chamber, an outer cylinder that forms a liquid chamber that holds a solution between the inner cylinder, a solution tube that communicates with the liquid chamber and is disposed in the combustion chamber, and one of the combustion chambers A surface combustion burner connected to the side surface of the combustion chamber, an exhaust passage connected to the other side surface of the combustion chamber, and a chimney connected to the exhaust passage,
The surface combustion burner has a combustion surface on one entire side of the combustion chamber, and the exhaust passage restriction has an entire other side of the combustion chamber;
Co provided so as to partition between the exhaust passage in the exhaust passage aperture and said combustion chamber having opposed and opening to a combustion surface of the surface combustion burner, wake side the exhaust passage from the opening An absorption chiller / heater characterized in that a silencer is constituted by the exhaust passage throttle, the cylinder portion and the exhaust passage .

The absorption chiller / heater according to claim 9, further comprising a chimney provided on the downstream side of the exhaust passage so as to protrude from the outside to the inside.