JP3882242B2

JP3882242B2 - Adsorption refrigeration system

Info

Publication number: JP3882242B2
Application number: JP32997496A
Authority: JP
Inventors: 哲井上
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 1996-12-10
Filing date: 1996-12-10
Publication date: 2007-02-14
Anticipated expiration: 2016-12-10
Also published as: JPH10170093A

Description

【０００１】
【発明の属する技術分野】
本発明は、吸着剤により水等の冷媒を吸着、脱着させることを利用した吸着式冷凍装置に関する。
【０００２】
【従来の技術】
従来、実開平１−１２６８１１号公報には、図４に示すように、第１吸着コア１、および、第１凝縮蒸発器３５を密閉容器７内部に収容し、第２吸着コア２および第２凝縮蒸発器４６を密閉容器８内部に収容した吸着式冷凍装置１００が提案されている。そして、第１吸着コア１が冷媒を吸着する吸着工程、第２吸着コア２が脱着工程を行なう第１過程と、第１吸着コア１が脱着工程、第２吸着コア２が吸着工程を行なう第２過程とを、所定時間毎に交互に切り替えて行なうようになっている。
【０００３】
例えば、上記第１過程を行なうとき、第１吸着コア１に９０℃程度の熱交換流体を供給し、第２吸着コア２に３０℃程度の熱交換流体を供給すると同時に、第１、第２凝縮蒸発器３５、４６に３０℃程度の熱交換流体を供給する。これにより、第１吸着コア１が冷媒を脱着し、この冷媒が第１凝縮蒸発器３５において凝縮する。
【０００４】
また、第２吸着コア２が冷媒を吸着するため、第２凝縮蒸発器４６における液体冷媒の蒸発が促進される。よって、第２凝縮蒸発器４６を通過する熱交換流体は、この蒸発による蒸発熱を奪われて８℃程度に冷却される。なお、蒸発器としてはたらく凝縮蒸発器３５、４６と室内熱交換器との間で熱交換流体を循環させるようになっており、凝縮蒸発器３５、４６にて冷却された熱交換流体を、室内熱交換器で熱交換させて室内を冷却している。
【０００５】
【発明が解決しようとする課題】
ところで、上記第１過程を行なうときは、凝縮器としてはたらく第１凝縮蒸発器３５自身（流体配管やフィン）も、熱交換流体の温度程度（例えば、４０℃程度）に加熱されている。この第１過程から第２過程に切り替えるとき、つまり、第１凝縮蒸発器３５を蒸発器としてはたらかせるとき、第１凝縮蒸発器３５自身の持つ熱が、冷媒の蒸発の際の蒸発潜熱として奪われたり、室内熱交換器から供給される冷たい（例えば、２０℃程度）熱交換流体に放出されたりする。
【０００６】
このため、第１凝縮蒸発器３５を流れる熱交換流体が良好に冷却されず、室内熱交換器に冷たい熱交換流体を供給できないため、この冷凍装置の冷房能力が低下する、といった問題があった。なお、第２工程から第１工程に切り替えるときも、第２凝縮蒸発器４６において、同様の問題が発生する。
本発明は上記問題に鑑みてなされたもので、室内熱交換器へ流す熱交換流体を良好に冷却して、冷房能力を向上することを目的とする。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、請求項１ないし３に記載の発明では、第１吸着コア（１）、第１凝縮器（３）、および、第１蒸発器（５）を、それぞれ別体に、１つの第１密閉容器（７）に収容し、第２吸着コア（２）、第２凝縮器（４）、および、第２蒸発器（６）を、それぞれ別体に、１つの第２密閉容器（８）に収容してある。そして、第１、第２吸着コア（１、２）が冷媒を脱着するとき、第１、第２凝縮器（３、４）に第１熱交換流体が流れて冷媒の凝縮による凝縮熱を奪い、第１、第２吸着コア（１、２）が冷媒を吸着するとき、第１、第２蒸発器（５、６）に第２熱交換流体が流れて冷媒の蒸発による蒸発熱を奪われ、吸着コア（１、２）が冷媒を吸着するとき、凝縮器（３、４）に第１熱交換流体が滞留するようになっている。
【０００８】
そして、第１、第２蒸発器（５、６）を流れる第２熱交換流体は、室内空気と熱交換する室内熱交換器（１５）に流れて室内を冷却するようになっており、吸着コア（１、２）による冷媒の吸着、脱着を切り替えるとき、この切り替えの直前において凝縮器（３、４）の一方に滞留している第１熱交換流体を、上記切り替えの直後に、凝縮器（３、４）の他方へ移動させた後、この他方の凝縮器（３、４）に第１熱交換流体を滞留させるとともに、一方の凝縮器（３、４）に第１熱交換流体を流すことを特徴としている。
【０００９】
このような構成によれば、例えば、第１吸着コア（１）が冷媒を吸着し、第２吸着コア（２）が冷媒を脱着するとき、第１吸着コア（１）における冷媒の吸着により、第１蒸発器（５）が冷媒を蒸発させるので、第１蒸発器（５）を流れる第２熱交換流体が冷却されるとともに、第１凝縮器（３）自身、および、第１凝縮器（３）に滞留する第１熱交換流体も冷却される。また、第２吸着コア（２）における冷媒の脱着により、第２凝縮器（４）が冷媒を凝縮するので、第２凝縮器（４）を流れる第１熱交換流体が加熱されるとともに、第２凝縮器（４）自身および第２蒸発器（６）自身も加熱される。
【００１０】
この状態から、第１吸着コア（１）が冷媒を脱着し、第２吸着コア（２）が冷媒を吸着するよう切り替えるとき、この切り替えの直後に、第１凝縮器（３）に滞留する冷却された第１熱交換流体を、上記加熱された第２凝縮器（４）に流しているので、第２凝縮器（４）自身が上記冷却された第１熱交換流体により冷却される。
【００１１】
ここで、凝縮器と蒸発器とを一体に設けていた従来技術では、凝縮器自身の熱および蒸発器自身の持つ熱を、室内熱交換器へ流れる熱交換流体へ放出していたが、本発明では、上述のように、凝縮器（３、４）と蒸発器（５、６）とを別体に設け、かつ、上述のような作動を行なうことにより、第２凝縮器（４）自身の持つ熱を、第１凝縮器（３）に滞留する冷却された第１熱交換流体に放出できる。
【００１２】
この結果、▲１▼第２蒸発器（６）を流れる第２熱交換流体、つまり、室内熱交換器（１５）へ流れる第２熱交換流体に放出する熱を減らすことができ、この第２熱交換流体が加熱されるのを抑制できる。▲２▼第２蒸発器（６）を流れる熱交換流体から、より多くの熱を蒸発潜熱として奪うことができる。上記▲１▼、▲２▼により、第２蒸発器（６）を流れる熱交換流体を効率よく冷却でき、この吸着式冷凍装置の冷房能力を向上できる。
【００１３】
なお、第１吸着コア（１）が冷媒を脱着し、第２吸着コア（２）が冷媒を吸着する状態から、第１吸着コア（１）が冷媒を吸着し、第２吸着コア（２）が冷媒を脱着する状態に切り替えるときも、上述した効果と同様の効果が得られる。
また、請求項２に記載の発明では、密閉容器（７、８）内部の液体冷媒（Ｌ）から露出するように凝縮器（３、４）を配置し、液体冷媒（Ｌ）に浸漬するように蒸発器（５、６）を配置してある。このため、凝縮器（３、４）における冷媒の凝縮、および、蒸発器（５、６）における冷媒の蒸発がより効率よく行なわれ、この吸着式冷凍装置の冷房能力をより向上できる。
【００１４】
また、請求項３に記載の発明では、上記切り替えの直前に、第１、第２蒸発器（５、６）の一方を流れる第２熱交換流体を、上記切り替えの直後に、室内熱交換器（１５）へ移動させた後、他方の蒸発器（５、６）を流れる第２熱交換流体を室内熱交換器（１５）に流すことを特徴としている。
従って、第１吸着コア（１）が冷媒を吸着するとき、第１蒸発器（５）が冷媒を蒸発させるため、この第１蒸発器（５）を流れる第２熱交換流体は冷却されており、第２吸着コア（２）では冷媒を脱着するので、第２凝縮器（４）は冷媒を凝縮し、これにより、第２蒸発器（６）に滞留する第２熱交換流体は加熱されている。そして、第１吸着コア（１）が冷媒を脱着し、第２吸着コア（２）が冷媒を吸着するよう切り替えるとき、この切り替え直後に、第２蒸発器（６）を流れる第２熱交換流体を室内熱交換器（１５）に流すようにした場合、上記加熱された第２熱交換流体が、室内熱交換器（１５）に流れるため、この分だけ冷房能力が低下する。これに対して、上記切り替えの直後に、第１蒸発器（５）において冷却された第２熱交換流体を室内熱交換器（１５）に流すことで、この分だけ冷房能力を向上できる。
【００１５】
【発明の実施の形態】
以下、本発明を図に示す実施形態について説明する。
（第１の実施形態）
図１に示すように、本実施形態の吸着式冷凍装置１００は、多数の吸着剤を備えた第１、第２吸着コア１、２、気体冷媒を凝縮する第１、第２凝縮器３、４、および、液体冷媒を蒸発させる第１、第２蒸発器５、６を備えている。ここで、冷媒としては、例えば、水やアルコール等を用いている。また、吸着剤は、冷却状態において気体冷媒を高能力で吸着し、この吸着に伴い吸着能力が次第に低下するが、加熱状態とされることにより、吸着していた気体冷媒を脱着して吸着能力が再生されるという性質を有している。
【００１６】
また、第１、第２吸着コア１、２は、後述する熱交換流体が流れる流体配管と、この流体配管近傍に設けられる伝熱フィンと、上記多数の吸着剤とを備え、第１、第２凝縮器３、４および第１、第２蒸発器５、６は、後述する熱交換流体が流れる流体配管、および、この流体配管近傍に設けられる伝熱フィンを備えている。
【００１７】
そして、第１吸着コア１、第１凝縮器３、および、第１蒸発器５は、上方からこの順に配置され、１つの第１密閉容器７内に収容されている。同様に、第２吸着コア２、第２凝縮器４、および、第２蒸発器６は、上方からこの順に配置され、１つの第２密閉容器８内に収容されている。
そして、第１吸着コア１が冷媒を吸着する吸着工程、第２吸着コア２が脱着工程を行なう第１過程と、第１吸着コア１が脱着工程、第２吸着コア２が吸着工程を行なう第２過程とを、所定時間Ｔ1 （例えば１００秒）毎に交互に切り替えて行なうようになっている。また、第１、第２凝縮器３、４は、第１、第２吸着コア１が脱着工程を実行しているときにのみ、冷媒を凝縮し、第１、第２蒸発器５、６は、第１、第２吸着コア１が吸着工程を実行しているときにのみ、冷媒を蒸発させる。
【００１８】
ここで、第１、第２密閉容器７、８内の底側内部には、常に液体冷媒Ｌが存在している。なお、第１、第２凝縮器３、４は、常に液体冷媒Ｌの液面よりも上方に配置されて液体冷媒Ｌから露出し、第１、第２蒸発器５、６は、常に液体冷媒Ｌの液面よりも下方に配置されて液体冷媒Ｌに浸漬している。
そして、室外熱交換器９、四方切替弁１０、第１、第２吸着コア１、２、四方切替弁１１、電動ポンプ１２、室外熱交換器９が、この順に直列に接続され、この順に熱交換流体が流れるようになっている。この熱交換流体は、例えば不凍液からなり、各部位で熱を吸収したり放出するものである。また、室外熱交換器９、四方切替弁１３、第１、第２凝縮器３、４、四方切替弁１４、電動ポンプ１２、室外熱交換器９が、この順に直列に接続され、この順に熱交換流体が流れるようになっている。
【００１９】
また、第１凝縮器３、四方切替弁１４、四方切替弁１３、第２凝縮器４は、この順に直列に接続され、この順に熱交換流体が流れるようになっている。また、第２凝縮器４、四方切替弁１４、四方切替弁１３、第１凝縮器３も、この順に直列に接続され、この順に熱交換流体が流れるようになっている。
また、室内熱交換器１５、電動ポンプ１６、三方切替弁１７、第１、第２蒸発器５、６、三方切替弁１８、室内熱交換器１５が、この順に直列に接続され、この順に熱交換流体が流れるようになっている。また、図示しないエンジン、図示しないポンプ、第１、第２吸着コア１、２、上記エンジンが、この順に直列に接続され、この順に熱交換流体が流れるようになっている。なお、室外熱交換器９および室内熱交換器１５は、後述する熱交換流体が流れる流体配管と、この流体配管の近傍に設けられた伝熱フィンとを備えている。
【００２０】
以下に、上記構成の吸着式冷凍装置１００の作動を説明する。
まず、第１吸着コア１が気体冷媒を吸着し、第２吸着コア２が気体冷媒を脱着する第１過程について説明する。この場合、上記四方切替弁１０、１１、１３、１４および三方切替弁１７、１８の回動位置は、図１中実線で示すように設定される（この状態を、状態Ａとする）。なお、図１中太線で示す部位には、図１中矢印で示すように熱交換流体が流れ、図１中細線で示す部位では、熱交換流体の流れは停止しており、熱交換流体が滞留している。
【００２１】
具体的に、エンジンにて加熱された熱交換流体（吸着コアを加熱する加熱流体）が、弁１０を経て第２吸着コア２へ供給されることにより、第２吸着コア２の吸着剤が加熱されて冷媒を脱着する。この第２吸着コア２において、冷媒の脱着による脱着熱を奪われた熱交換流体が、弁１１を経て再びエンジンに戻り、加熱される。また、室外熱交換器９にて室外空気に放熱した熱交換流体が、弁１３を経て第２凝縮器４へ供給されることにより、上記脱着された冷媒を、第２凝縮器４にて凝縮する。この第２凝縮器４において、冷媒の凝縮による凝縮熱を奪った熱交換流体が、弁１４を経て再び室外熱交換器９へ戻り、放熱する。
【００２２】
また、室外熱交換器９からの熱交換流体（吸着コアを冷却する冷却流体）が、弁１０を経て第１吸着コア１へ供給されることにより、第１吸着コア１の吸着剤が冷却されて冷媒を吸着する。この第１吸着コア１において、冷媒の吸着による吸着熱を奪った熱交換流体が、弁１１を経て再び室外熱交換器９へ戻る。このとき、冷媒の吸着により密閉容器７内の圧力が下がり、第１蒸発器５において、液体冷媒が蒸発するので、第１蒸発器５を流れる熱交換流体は、蒸発による蒸発熱を奪われて冷却される。そして、冷却された熱交換流体が、弁１８を経て室内熱交換器１５に供給されることにより、室内熱交換器１５近傍の室内空気が冷却される。
【００２３】
ここで、吸着側の第１吸着コア１を流れる熱交換流体の速度よりも、脱着側の第２吸着コア２を流れる熱交換流体の速度の方が速くなるように設定し、第１過程から第２過程に切り替えるときに、脱着側の第２吸着コア２は、それ以上脱着できない状態（脱着完了状態）となるようにし、吸着側の第１吸着コア１は、多少吸着可能な状態となるようにしてある。
【００２４】
なお、第１過程の終了直前（第１過程から第２過程に切り替える直前）において、第１吸着コア１を流れる熱交換流体の入口温度は例えば３５℃、出口温度は例えば４５℃であり、第１蒸発器５を流れる熱交換流体の入口温度は例えば２５℃、出口温度は例えば１０℃である。そして、第１凝縮器３に滞留する熱交換流体は、上記蒸発熱を奪われて、例えば１５℃程度に冷却されている。
【００２５】
また、第２吸着コア２（脱着完了状態）を流れる熱交換流体の入口温度および出口温度は例えば９０℃であり、第２凝縮器４を流れる熱交換流体の入口温度および出口温度は、例えば３５℃である。そして、第２蒸発器６に滞留する熱交換流体は、上記凝縮熱を奪って、例えば２５℃程度に加熱されている。また、室外熱交換器９の入口温度は例えば４０℃、出口温度は例えば３５℃であり、室内熱交換器１５の入口温度は例えば１０℃、出口温度は例えば２５℃である。ここで、第１、第２吸着コア１、２、凝縮器３、４、蒸発器５、６、室外熱交換器９、および、室内熱交換器１５自身の温度も、上記熱交換流体と同程度の温度となっている。
【００２６】
そして、上記第１過程から第２過程に切り替えるとき、まず、四方切替弁１４の回動位置はそのままとし、それ以外の切替弁１０、１１、１３、１７、１８の回動位置を、図１中点線で示す位置に切り替える（第２過程の状態Ａ）。この状態Ａのときの、切替弁１０、１１、１３、１４、１７、１８の回動位置を図２中実線で示す。これにより、室外熱交換器９からの熱交換流体が、弁１３を経て第１凝縮器３へ供給され、上記第１過程において第１凝縮器４に滞留していた（冷却された）熱交換流体が押し出され、弁１４、１３を経て第２凝縮器４へ供給される。これにより、第２凝縮器４が冷却される。そして、この状態Ａに切り替えてから、所定時間Ｔ1 よりも短い所定時間Ｔ2 （例えば３秒）後、具体的には、上記第１過程において第１凝縮器４に滞留していた熱交換流体が全て、第２凝縮器４へ供給された後、四方切替弁１４の回動位置を、図２中点線で示す位置に切り替える（第２過程の状態Ｂ）。
【００２７】
なお、状態Ａから状態Ｂにかけて、エンジンからの熱交換流体が第１吸着コア１を流れて、第１吸着コア１が冷媒を脱着し、室外熱交換器９からの熱交換流体が第１凝縮器３を流れて、第１凝縮器３が冷媒を凝縮する。また、室外熱交換器９からの熱交換流体が第２吸着コア２を流れて、第２吸着コア２が冷媒を吸着し、室内熱交換器１５からの熱交換流体が第２蒸発器６を流れて、第２蒸発器６が冷媒を蒸発させる。また、状態Ｂに切り替えた後には、第２凝縮器４に熱交換流体が滞留し、この熱交換流体は、第２蒸発器６における冷媒の蒸発による蒸発熱を奪われて冷却される。
【００２８】
このように、第１過程において第１凝縮器３にて冷却された熱交換流体を、第１過程から第２過程に切り替えた直後に、第２凝縮器４に供給しているので、第２凝縮器４自身の持つ熱を、上記冷却された熱交換流体に放出できる。
この結果、▲１▼第２蒸発器６を流れる熱交換流体、つまり、室内熱交換１５へ流れる熱交換流体に放出する熱を減らすことができ、この熱交換流体が加熱されるのを抑制できる。▲２▼第２蒸発器６を流れる熱交換流体から、より多くの熱を蒸発潜熱として奪うことができる。上記▲１▼、▲２▼により、第２蒸発器６を流れる熱交換流体を効率よく冷却でき、この吸着式冷凍装置の冷房能力を向上できる。なお、第２過程から第１過程に切り替えるときにも、上述した効果と同様の効果が得られる。
【００２９】
ここで、図４に示す従来技術の凝縮蒸発器３５、４６では、冷媒の凝縮および蒸発を効率よく行なうよう、液体冷媒に浸漬する部位と液体冷媒から露出する部位とを確保するため、この凝縮蒸発器３５、４６が大型であった。これに対して、第１、第２凝縮器３、４は液体冷媒Ｌから露出し、第１、第２蒸発器５、６は液体冷媒Ｌに浸漬しているため、凝縮器３、４および蒸発器５、６は、従来の凝縮蒸発器３５、４６よりも小さく、半分程度の体格となる。このため、第２凝縮器４自身の持つ熱は、従来の凝縮蒸発器３５、４６の半分程度である。
【００３０】
また、第１、第２凝縮器３、４は液体冷媒Ｌから露出し、第１、第２蒸発器５、６は液体冷媒Ｌに浸漬しているため、冷媒の凝縮は、第１、第２凝縮器３、４において効率よく行なわれ、冷媒の蒸発は、第１、第２蒸発器５、６において効率よく行なわれる。このため、例えば、第２過程に切り替え直後の第１蒸発器５（熱交換流体が滞留する蒸発器）は、切り替え前（第１過程）における冷媒の蒸発により１０℃程度となっており、時間が経過するにつれて、第１凝縮器３における冷媒の凝縮により加熱されるが、第２蒸発器６自身が加熱される速度は、第２凝縮器４自身が加熱される速度に比べて遅い。よって、本実施形態では、第２過程が終了しても、完全に第１凝縮器３の温度（例えば３５℃）までは加熱されず、例えば２５℃程度となる。
【００３１】
この結果、第１蒸発器５自身の持つ熱が、従来技術の凝縮蒸発器よりもさらに小さく、第１過程から第２過程に切り替えたとき、第１蒸発器５を流れる熱交換流体をより一層効率よく冷却できる。
なお、本実施形態の吸着式冷凍装置１００は、第１、第２吸着コア１、２に対応して、第１、第２凝縮器３、４、および、第１、第２蒸発器５、６を備えている。このため、第１過程と第２過程とを切り替えるときに、冷媒の流路を切り替える必要はなく、流路を切り替える切替手段（例えば切替弁等）を必要としないので、構造が単純であり、コスト安なものである。
【００３２】
（第２の実施形態）
上記第１の実施形態では、第１、第２蒸発器３、４と、室内熱交換器１５とを、三方切替弁１７、１８を介して直列に接続していたが、図３に示す本実施形態では、第１、第２蒸発器３、４と、室内熱交換器１５とを、四方切替弁１７ａ、１８ａを介して直列に接続している。なお、図３に示す部分以外の構成は、図１や図２と同様であるため、図３において図示を省略してある。
【００３３】
そして、第１吸着コア１が冷媒を吸着し、第２吸着コア２が冷媒を脱着する第１過程では、四方切替弁１７ａ、１８ａの回動位置は、図３中実線で示す位置とされ、第１蒸発器５と室内熱交換器１５との間に熱交換流体が循環するとともに、切替弁１７ａ、第２蒸発器６、四方切替弁１８ａからなる流体通路に、熱交換流体が滞留する。
【００３４】
そして、上記第１過程から第２過程に切り替えた直後には、四方切替弁１８ａ（蒸発器５、６の出口側の切替弁）の回動位置はそのままとし、四方切替弁１７ａ（第２蒸発器５、６の入口側の切替弁）の回動位置を、図３中点線で示す位置に切り替える。これにより、切り替え直前において、冷媒の蒸発作用にて冷却された第２蒸発器６を流れていた熱交換流体が、切り替え直後においてもなお、室内熱交換器１５へ供給され続ける。そして、切り替えたときから所定時間Ｔ3 （例えば３秒）経過後、具体的には、上記冷却された熱交換流体が全て室内熱交換器１５へ供給された後、四方切替弁１８ａの回動位置を図３中点線で示す位置に切り替える。
【００３５】
この結果、上記冷却された熱交換流体の分だけ、室内熱交換器１５による冷房能力を向上できる。
（他の実施形態）
上記実施形態で述べた吸着式冷凍装置における熱交換流体の流し方に限定されることはなく、他の種々の流し方をさせてもよい。例えば、吸着コア１、２の図１中左側から右側に、熱交換流体が流れるようにしてもよい。
【００３６】
また、吸着コア１、２、凝縮器３、４、および、蒸発器５、６を、１つの密閉容器７、８の内部において複数段に分割した形状に配置してもよい。
この場合、吸着コア１、２と、凝縮器３、４、および、蒸発器５、６との熱交換流体の流れ方向を対向させるとよい。具体的には、吸着コア１、２には図１中例えば右側から左側へ熱交換流体を流し、凝縮器３、４、および、蒸発器５、６には図１中例えば左側から右側へ熱交換流体を流す。これにより、吸着コア１、２における冷媒の吸着、脱着や、凝縮器３、４における冷媒の凝縮や、蒸発器５、６における冷媒の蒸発がより効果的に行なわれる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態における、第１過程を行なう吸着式冷凍装置の全体構成図である。
【図２】本発明の第１の実施形態における、第１過程から第２過程に切り替えた直後の吸着式冷凍装置の全体構成図である。
【図３】本発明の第２の実施形態における、蒸発器と室内熱交換器との間の熱交換流体の流れ方を示す図である。
【図４】従来技術に係わる吸着式冷凍装置の部分的な構成図である。
【符号の説明】
１…第１吸着コア、２…第２吸着コア、３…第１凝縮器、４…第２凝縮器、
５…第１蒸発器、６…第２蒸発器、７…第１密閉容器、８…第２密閉容器。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adsorption refrigeration apparatus utilizing adsorption and desorption of a refrigerant such as water by an adsorbent.
[0002]
[Prior art]
Conventionally, JP JitsuHiraku flat 1-126811, as shown in FIG. 4, the first adsorption core 1, and the first reboiler-condenser 35 housed inside the sealed container 7, the second adsorption core 2 and the An adsorption refrigeration apparatus 100 in which a two-condenser evaporator 46 is housed in a sealed container 8 has been proposed. The first adsorption core 1 adsorbs the refrigerant, the second adsorption core 2 performs the desorption process, the first adsorption core 1 performs the desorption process, and the second adsorption core 2 performs the adsorption process. The two processes are alternately switched every predetermined time.
[0003]
For example, when the first process is performed, a heat exchange fluid of about 90 ° C. is supplied to the first adsorption core 1, and a heat exchange fluid of about 30 ° C. is supplied to the second adsorption core 2. A heat exchange fluid of about 30 ° C. is supplied to the condenser evaporators 35 and 46. Thereby, the first adsorption core 1 desorbs the refrigerant, and the refrigerant is condensed in the first condensing evaporator 35.
[0004]
Further, since the second adsorption core 2 adsorbs the refrigerant, the evaporation of the liquid refrigerant in the second condensing evaporator 46 is promoted. Therefore, the heat exchange fluid passing through the second condensing evaporator 46 is cooled to about 8 ° C. by removing the heat of evaporation due to the evaporation. The heat exchange fluid is circulated between the condensation evaporators 35 and 46 that function as evaporators and the indoor heat exchanger, and the heat exchange fluid cooled by the condensation evaporators 35 and 46 is supplied to the indoor heat exchanger. The room is cooled by exchanging heat with a heat exchanger.
[0005]
[Problems to be solved by the invention]
By the way, when performing the said 1st process, the 1st condensation evaporator 35 itself (fluid piping and fin) which acts as a condenser is also heated by about the temperature (for example, about 40 degreeC) of the heat exchange fluid. When switching from the first process to the second process, that is, when the first condensing evaporator 35 is used as an evaporator, the heat of the first condensing evaporator 35 itself is taken away as latent heat of evaporation during the evaporation of the refrigerant. Or discharged to a cold (for example, about 20 ° C.) heat exchange fluid supplied from the indoor heat exchanger.
[0006]
For this reason, the heat exchange fluid flowing through the first condensing evaporator 35 is not cooled well, and the cold heat exchange fluid cannot be supplied to the indoor heat exchanger, so that the cooling capacity of the refrigeration apparatus is lowered. . The same problem occurs in the second condensing evaporator 46 when switching from the second process to the first process.
The present invention has been made in view of the above problems, and an object of the present invention is to satisfactorily cool the heat exchange fluid flowing to the indoor heat exchanger and improve the cooling capacity.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the first to third aspects of the present invention, the first adsorption core (1), the first condenser (3), and the first evaporator (5) are separately provided. It accommodates in one 1st airtight container (7), the 2nd adsorption core (2), the 2nd condenser (4), and the 2nd evaporator (6) are made into a separate object, respectively Housed in a hermetically sealed container (8). When the first and second adsorption cores (1, 2) desorb the refrigerant, the first heat exchange fluid flows through the first and second condensers (3, 4) to take away the heat of condensation due to the condensation of the refrigerant. When the first and second adsorption cores (1, 2) adsorb the refrigerant, the second heat exchange fluid flows into the first and second evaporators (5, 6), and the heat of evaporation due to the evaporation of the refrigerant is taken away. When the adsorption core (1, 2) adsorbs the refrigerant, the first heat exchange fluid is retained in the condenser (3, 4).
[0008]
The second heat exchange fluid flowing through the first and second evaporators (5, 6) flows into the indoor heat exchanger (15) for exchanging heat with room air to cool the room, and is adsorbed. When switching between adsorption and desorption of the refrigerant by the core (1, 2), the first heat exchange fluid staying in one of the condensers (3, 4) immediately before the switching is changed to the condenser immediately after the switching. After moving to the other of (3, 4), the first heat exchange fluid is retained in the other condenser (3, 4), and the first heat exchange fluid is retained in one condenser (3, 4). It is characterized by flowing.
[0009]
According to such a configuration, for example, when the first adsorption core (1) adsorbs the refrigerant and the second adsorption core (2) desorbs the refrigerant, due to the adsorption of the refrigerant in the first adsorption core (1), Since the first evaporator (5) evaporates the refrigerant, the second heat exchange fluid flowing through the first evaporator (5) is cooled, and the first condenser (3) itself and the first condenser ( The first heat exchange fluid staying in 3) is also cooled. Moreover, since the second condenser (4) condenses the refrigerant by the desorption of the refrigerant in the second adsorption core (2), the first heat exchange fluid flowing through the second condenser (4) is heated, and the second The two condenser (4) itself and the second evaporator (6) itself are also heated.
[0010]
From this state, when the first adsorbing core (1) desorbs the refrigerant and the second adsorbing core (2) is switched to adsorb the refrigerant, immediately after the switching, the cooling that stays in the first condenser (3). Since the 1st heat exchange fluid made to flow into the above-mentioned heated 2nd condenser (4), the 2nd condenser (4) itself is cooled with the above-mentioned cooled 1st heat exchange fluid.
[0011]
Here, in the conventional technology in which the condenser and the evaporator are provided integrally, the heat of the condenser itself and the heat of the evaporator itself are released to the heat exchange fluid flowing to the indoor heat exchanger. In the invention, as described above, the condenser (3, 4) and the evaporator (5, 6) are provided separately, and the second condenser (4) itself is obtained by performing the above-described operation. Can be released to the cooled first heat exchange fluid that remains in the first condenser (3).
[0012]
As a result, (1) the heat released to the second heat exchange fluid flowing through the second evaporator (6), that is, the second heat exchange fluid flowing into the indoor heat exchanger (15) can be reduced. Heating of the heat exchange fluid can be suppressed. (2) More heat can be taken from the heat exchange fluid flowing through the second evaporator (6) as latent heat of evaporation. By the above (1) and (2), the heat exchange fluid flowing through the second evaporator (6) can be efficiently cooled, and the cooling capacity of this adsorption refrigeration apparatus can be improved.
[0013]
From the state where the first adsorption core (1) desorbs the refrigerant and the second adsorption core (2) adsorbs the refrigerant, the first adsorption core (1) adsorbs the refrigerant and the second adsorption core (2). When switching to the state where the refrigerant is desorbed, the same effect as described above can be obtained.
Moreover, in invention of Claim 2, a condenser (3, 4) is arrange | positioned so that it may expose from the liquid refrigerant (L) inside an airtight container (7, 8), and it is immersed in a liquid refrigerant (L). The evaporators (5, 6) are arranged in the. For this reason, the condensation of the refrigerant in the condensers (3, 4) and the evaporation of the refrigerant in the evaporators (5, 6) are performed more efficiently, and the cooling capacity of the adsorption refrigeration apparatus can be further improved.
[0014]
In the invention according to claim 3, immediately before the switching, the second heat exchange fluid flowing through one of the first and second evaporators (5, 6) is used as an indoor heat exchanger immediately after the switching. After moving to (15), the second heat exchange fluid flowing through the other evaporator (5, 6) is caused to flow to the indoor heat exchanger (15).
Therefore, since the first evaporator (5) evaporates the refrigerant when the first adsorption core (1) adsorbs the refrigerant, the second heat exchange fluid flowing through the first evaporator (5) is cooled. Since the refrigerant is desorbed in the second adsorption core (2), the second condenser (4) condenses the refrigerant, whereby the second heat exchange fluid staying in the second evaporator (6) is heated. Yes. When the first adsorption core (1) is desorbed from the refrigerant and the second adsorption core (2) is switched to adsorb the refrigerant, the second heat exchange fluid flowing through the second evaporator (6) immediately after the switching. Is allowed to flow to the indoor heat exchanger (15), the heated second heat exchange fluid flows to the indoor heat exchanger (15), so that the cooling capacity is reduced by this amount. On the other hand, immediately after the switching, the second heat exchange fluid cooled in the first evaporator (5) is allowed to flow to the indoor heat exchanger (15), so that the cooling capacity can be improved by this amount.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below.
(First embodiment)
As shown in FIG. 1, the adsorption refrigeration apparatus 100 of the present embodiment includes first and second adsorption cores 1 and 2 having a large number of adsorbents, first and second condensers 3 that condense a gaseous refrigerant, 4 and first and second evaporators 5 and 6 for evaporating the liquid refrigerant. Here, as the refrigerant, for example, water or alcohol is used. In addition, the adsorbent adsorbs the gas refrigerant with high capacity in the cooled state, and the adsorption capacity gradually decreases with this adsorption. However, the adsorbent adsorbs the adsorbed gas refrigerant by desorbing the adsorbed gas refrigerant. Is regenerated.
[0016]
The first and second adsorption cores 1 and 2 include a fluid pipe through which a heat exchange fluid, which will be described later, flows, heat transfer fins provided in the vicinity of the fluid pipe, and the plurality of adsorbents. The two condensers 3 and 4 and the first and second evaporators 5 and 6 include a fluid pipe through which a heat exchange fluid described later flows, and heat transfer fins provided in the vicinity of the fluid pipe.
[0017]
The first adsorption core 1, the first condenser 3, and the first evaporator 5 are arranged in this order from above and are accommodated in one first sealed container 7. Similarly, the 2nd adsorption core 2, the 2nd condenser 4, and the 2nd evaporator 6 are arranged in this order from the upper part, and are stored in one 2nd airtight container 8. FIG.
The first adsorption core 1 adsorbs the refrigerant, the second adsorption core 2 performs the desorption process, the first adsorption core 1 performs the desorption process, and the second adsorption core 2 performs the adsorption process. The two processes are alternately switched every predetermined time T1 (for example, 100 seconds). The first and second condensers 3 and 4 condense the refrigerant only when the first and second adsorption cores 1 are performing the desorption process, and the first and second evaporators 5 and 6 The refrigerant is evaporated only when the first and second adsorption cores 1 are performing the adsorption process.
[0018]
Here, the liquid refrigerant L always exists in the bottom side inside the first and second sealed containers 7 and 8. The first and second condensers 3 and 4 are always arranged above the liquid refrigerant L and exposed from the liquid refrigerant L, and the first and second evaporators 5 and 6 are always liquid refrigerant. It is disposed below the liquid level of L and is immersed in the liquid refrigerant L.
The outdoor heat exchanger 9, the four-way switching valve 10, the first and second adsorption cores 1, 2, the four-way switching valve 11, the electric pump 12, and the outdoor heat exchanger 9 are connected in series in this order, and the heat is added in this order. The exchange fluid flows. This heat exchange fluid is made of, for example, an antifreeze and absorbs or releases heat at each part. In addition, the outdoor heat exchanger 9, the four-way switching valve 13, the first and second condensers 3, 4, the four-way switching valve 14, the electric pump 12, and the outdoor heat exchanger 9 are connected in series in this order, and heat is added in this order. The exchange fluid flows.
[0019]
The first condenser 3, the four-way switching valve 14, the four-way switching valve 13, and the second condenser 4 are connected in series in this order, and the heat exchange fluid flows in this order. Further, the second condenser 4, the four-way switching valve 14, the four-way switching valve 13, and the first condenser 3 are also connected in series in this order, and the heat exchange fluid flows in this order.
Further, the indoor heat exchanger 15, the electric pump 16, the three-way switching valve 17, the first and second evaporators 5, 6, the three-way switching valve 18, and the indoor heat exchanger 15 are connected in series in this order, and the heat is added in this order. The exchange fluid flows. Further, the engine (not shown), the pump (not shown), the first and second adsorption cores 1 and 2, and the engine are connected in series in this order, and the heat exchange fluid flows in this order. The outdoor heat exchanger 9 and the indoor heat exchanger 15 include a fluid pipe through which a heat exchange fluid described later flows, and heat transfer fins provided in the vicinity of the fluid pipe.
[0020]
The operation of the adsorption refrigeration apparatus 100 having the above configuration will be described below.
First, the first process in which the first adsorption core 1 adsorbs the gaseous refrigerant and the second adsorption core 2 desorbs the gaseous refrigerant will be described. In this case, the rotational positions of the four-way switching valves 10, 11, 13, 14 and the three-way switching valves 17, 18 are set as indicated by the solid line in FIG. 1 (this state is referred to as state A). 1, the heat exchange fluid flows as indicated by the arrows in FIG. 1, and the flow of the heat exchange fluid stops at the portions indicated by the thin lines in FIG. It stays.
[0021]
Specifically, the heat exchange fluid heated by the engine (the heating fluid that heats the adsorption core) is supplied to the second adsorption core 2 through the valve 10 to heat the adsorbent of the second adsorption core 2. The refrigerant is desorbed. In the second adsorption core 2, the heat exchange fluid deprived of the desorption heat due to the desorption of the refrigerant returns to the engine again through the valve 11 and is heated. Further, the heat exchange fluid radiated to the outdoor air by the outdoor heat exchanger 9 is supplied to the second condenser 4 through the valve 13, whereby the desorbed refrigerant is condensed by the second condenser 4. To do. In the second condenser 4, the heat exchange fluid deprived of the heat of condensation due to the condensation of the refrigerant returns to the outdoor heat exchanger 9 again through the valve 14 and dissipates heat.
[0022]
Further, the heat exchange fluid (cooling fluid for cooling the adsorption core) from the outdoor heat exchanger 9 is supplied to the first adsorption core 1 via the valve 10, whereby the adsorbent of the first adsorption core 1 is cooled. Adsorb the refrigerant. In the first adsorption core 1, the heat exchange fluid that has lost the adsorption heat due to the adsorption of the refrigerant returns to the outdoor heat exchanger 9 again through the valve 11. At this time, the pressure in the sealed container 7 decreases due to the adsorption of the refrigerant, and the liquid refrigerant evaporates in the first evaporator 5, so that the heat exchange fluid flowing through the first evaporator 5 is deprived of the evaporation heat due to the evaporation. To be cooled. Then, the cooled heat exchange fluid is supplied to the indoor heat exchanger 15 through the valve 18, whereby the indoor air in the vicinity of the indoor heat exchanger 15 is cooled.
[0023]
Here, the speed of the heat exchange fluid flowing through the second adsorption core 2 on the desorption side is set to be higher than the speed of the heat exchange fluid flowing through the first adsorption core 1 on the adsorption side. When switching to the second process, the second adsorption core 2 on the desorption side is in a state where it can no longer be desorbed (desorption completion state), and the first adsorption core 1 on the adsorption side is in a state where it can be somewhat adsorbed. It is like that.
[0024]
Note that immediately before the end of the first process (immediately before switching from the first process to the second process), the inlet temperature of the heat exchange fluid flowing through the first adsorption core 1 is, for example, 35 ° C., and the outlet temperature is, for example, 45 ° C. The inlet temperature of the heat exchange fluid flowing through one evaporator 5 is, for example, 25 ° C., and the outlet temperature is, for example, 10 ° C. And the heat exchange fluid which retains in the 1st condenser 3 is deprived of the said evaporative heat, and is cooled to about 15 degreeC, for example.
[0025]
Further, the inlet temperature and outlet temperature of the heat exchange fluid flowing through the second adsorption core 2 (desorption completion state) are, for example, 90 ° C., and the inlet temperature and outlet temperature of the heat exchange fluid flowing through the second condenser 4 are, for example, 35. ° C. And the heat exchange fluid which retains in the 2nd evaporator 6 takes the said heat of condensation, and is heated by about 25 degreeC, for example. Moreover, the inlet temperature of the outdoor heat exchanger 9 is, for example, 40 ° C., the outlet temperature is, for example, 35 ° C., the inlet temperature of the indoor heat exchanger 15 is, for example, 10 ° C., and the outlet temperature is, for example, 25 ° C. Here, the temperatures of the first and second adsorption cores 1 and 2, the condensers 3 and 4, the evaporators 5 and 6, the outdoor heat exchanger 9, and the indoor heat exchanger 15 themselves are also the same as the heat exchange fluid. The temperature is about.
[0026]
Then, when switching from the first process to the second process, first, the rotational position of the four-way switching valve 14 is left as it is, and the other rotational positions of the switching valves 10, 11, 13, 17, 18 are shown in FIG. Switch to the position indicated by the dotted line (state A in the second process). The rotation positions of the switching valves 10, 11, 13, 14, 17, and 18 in this state A are indicated by solid lines in FIG. As a result, the heat exchange fluid from the outdoor heat exchanger 9 is supplied to the first condenser 3 via the valve 13, and the heat exchange that has been retained (cooled) in the first condenser 4 in the first process. The fluid is pushed out and supplied to the second condenser 4 via the valves 14 and 13. Thereby, the 2nd condenser 4 is cooled. Then, after switching to this state A, after a predetermined time T2 (for example, 3 seconds) shorter than the predetermined time T1, specifically, the heat exchange fluid staying in the first condenser 4 in the first process is After all are supplied to the second condenser 4, the rotational position of the four-way switching valve 14 is switched to the position indicated by the dotted line in FIG. 2 (state B in the second process).
[0027]
From state A to state B, the heat exchange fluid from the engine flows through the first adsorption core 1, the first adsorption core 1 desorbs the refrigerant, and the heat exchange fluid from the outdoor heat exchanger 9 is condensed first. The first condenser 3 condenses the refrigerant through the vessel 3. Further, the heat exchange fluid from the outdoor heat exchanger 9 flows through the second adsorption core 2, the second adsorption core 2 adsorbs the refrigerant, and the heat exchange fluid from the indoor heat exchanger 15 passes through the second evaporator 6. Then, the second evaporator 6 evaporates the refrigerant. In addition, after switching to the state B, the heat exchange fluid stays in the second condenser 4, and this heat exchange fluid is cooled by removing the heat of evaporation due to the evaporation of the refrigerant in the second evaporator 6.
[0028]
Thus, since the heat exchange fluid cooled in the first condenser 3 in the first process is supplied to the second condenser 4 immediately after switching from the first process to the second process, The heat of the condenser 4 itself can be released to the cooled heat exchange fluid.
As a result, (1) the heat released to the heat exchange fluid flowing through the second evaporator 6, that is, the heat exchange fluid flowing to the indoor heat exchange 15 can be reduced, and the heat exchange fluid can be suppressed from being heated. . (2) More heat can be taken from the heat exchange fluid flowing through the second evaporator 6 as latent heat of evaporation. By the above (1) and (2), the heat exchange fluid flowing through the second evaporator 6 can be efficiently cooled, and the cooling capacity of this adsorption refrigeration apparatus can be improved. Note that the same effect as described above can be obtained when switching from the second process to the first process.
[0029]
Here, in the prior art condenser evaporators 35 and 46 shown in FIG. 4, in order to efficiently condense and evaporate the refrigerant, in order to secure a part immersed in the liquid refrigerant and a part exposed from the liquid refrigerant, The evaporators 35 and 46 were large. On the other hand, the first and second condensers 3 and 4 are exposed from the liquid refrigerant L, and the first and second evaporators 5 and 6 are immersed in the liquid refrigerant L. The evaporators 5 and 6 are smaller than the conventional condensing evaporators 35 and 46, and are about half the size. For this reason, the heat of the second condenser 4 itself is about half that of the conventional condenser evaporators 35 and 46.
[0030]
Further, since the first and second condensers 3 and 4 are exposed from the liquid refrigerant L, and the first and second evaporators 5 and 6 are immersed in the liquid refrigerant L, the condensation of the refrigerant is performed by the first and second condensers. The two condensers 3 and 4 are efficiently performed, and the refrigerant is efficiently evaporated in the first and second evaporators 5 and 6. For this reason, for example, the first evaporator 5 (the evaporator in which the heat exchange fluid stays) immediately after switching to the second process is about 10 ° C. due to the evaporation of the refrigerant before the switching (first process), and the time As time elapses, the refrigerant is heated by the condensation of the refrigerant in the first condenser 3, but the speed at which the second evaporator 6 is heated is slower than the speed at which the second condenser 4 itself is heated. Therefore, in the present embodiment, even when the second process is completed, the temperature is not completely heated to the temperature of the first condenser 3 (for example, 35 ° C.), and is about 25 ° C., for example.
[0031]
As a result, the heat of the first evaporator 5 itself is much smaller than that of the conventional condenser evaporator, and when switching from the first process to the second process, the heat exchange fluid flowing through the first evaporator 5 is further increased. It can be cooled efficiently.
Note that the adsorption refrigeration apparatus 100 of the present embodiment corresponds to the first and second adsorption cores 1 and 2, and the first and second condensers 3 and 4 and the first and second evaporators 5, 6 is provided. For this reason, when switching between the first process and the second process, there is no need to switch the flow path of the refrigerant, and no switching means (for example, a switching valve) for switching the flow path is required, so the structure is simple, Cost is low.
[0032]
(Second Embodiment)
In the first embodiment, the first and second evaporators 3 and 4 and the indoor heat exchanger 15 are connected in series via the three-way switching valves 17 and 18, but the book shown in FIG. In the embodiment, the first and second evaporators 3 and 4 and the indoor heat exchanger 15 are connected in series via the four-way switching valves 17a and 18a. 3 is the same as that shown in FIGS. 1 and 2 and is not shown in FIG.
[0033]
In the first process in which the first adsorption core 1 adsorbs the refrigerant and the second adsorption core 2 desorbs the refrigerant, the rotational positions of the four-way switching valves 17a and 18a are the positions indicated by the solid lines in FIG. While the heat exchange fluid circulates between the first evaporator 5 and the indoor heat exchanger 15, the heat exchange fluid stays in the fluid passage including the switching valve 17a, the second evaporator 6, and the four-way switching valve 18a.
[0034]
Immediately after switching from the first process to the second process, the rotational position of the four-way switching valve 18a (the switching valve on the outlet side of the evaporators 5 and 6) remains unchanged, and the four-way switching valve 17a (second evaporation) The rotation position of the switching valve on the inlet side of the containers 5 and 6 is switched to the position indicated by the dotted line in FIG. As a result, the heat exchange fluid that has been flowing through the second evaporator 6 that has been cooled by the evaporation of the refrigerant immediately before the switching continues to be supplied to the indoor heat exchanger 15 even immediately after the switching. Then, after elapse of a predetermined time T3 (for example, 3 seconds) from the time of switching, specifically, after all the cooled heat exchange fluid is supplied to the indoor heat exchanger 15, the rotational position of the four-way switching valve 18a. Is switched to the position indicated by the dotted line in FIG.
[0035]
As a result, the cooling capacity of the indoor heat exchanger 15 can be improved by the amount of the cooled heat exchange fluid.
(Other embodiments)
It is not limited to the method of flowing the heat exchange fluid in the adsorption refrigeration apparatus described in the above embodiment, and various other ways of flowing may be used. For example, the heat exchange fluid may flow from the left side to the right side in FIG.
[0036]
Further, the adsorption cores 1 and 2, the condensers 3 and 4, and the evaporators 5 and 6 may be arranged in a shape divided into a plurality of stages inside one sealed container 7 and 8.
In this case, the flow direction of the heat exchange fluid between the adsorption cores 1 and 2, the condensers 3 and 4, and the evaporators 5 and 6 may be opposed to each other. Specifically, the heat exchange fluid flows through the adsorption cores 1 and 2 from the right side to the left side in FIG. 1, for example, and the condensers 3 and 4 and the evaporators 5 and 6 heat from the left side to the right side in FIG. Flow replacement fluid. Thereby, adsorption and desorption of the refrigerant in the adsorption cores 1 and 2, condensation of the refrigerant in the condensers 3 and 4, and evaporation of the refrigerant in the evaporators 5 and 6 are performed more effectively.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an adsorption refrigeration apparatus performing a first process in a first embodiment of the present invention.
FIG. 2 is an overall configuration diagram of an adsorption refrigeration apparatus immediately after switching from a first process to a second process in the first embodiment of the present invention.
FIG. 3 is a diagram showing how a heat exchange fluid flows between an evaporator and an indoor heat exchanger in the second embodiment of the present invention.
FIG. 4 is a partial configuration diagram of an adsorption refrigeration apparatus according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... 1st adsorption core, 2 ... 2nd adsorption core, 3 ... 1st condenser, 4 ... 2nd condenser,
5 ... 1st evaporator, 6 ... 2nd evaporator, 7 ... 1st airtight container, 8 ... 2nd airtight container.

Claims

A first adsorption core (1) that alternately performs adsorption and desorption of the refrigerant, a first condenser (3) that condenses the refrigerant when the first adsorption core (1) desorbs the refrigerant, and the first adsorption core The first evaporator (5) that evaporates the refrigerant when (1) adsorbs the refrigerant is separately housed in one first sealed container (7),
The second adsorption core (2) adsorbs the refrigerant when the first adsorption core (1) adsorbs the refrigerant, and adsorbs the refrigerant when the first adsorption core (1) desorbs the refrigerant, and the second adsorption. A second condenser (4) that condenses the refrigerant when the core (2) desorbs the refrigerant, and a second evaporator (6) that evaporates the refrigerant when the second adsorption core (2) adsorbs the refrigerant. , Each of which is housed in one second sealed container (8),
When the first and second adsorption cores (1, 2) desorb the refrigerant, the first heat exchange fluid flows through the first and second condensers (3, 4) to take away the heat of condensation due to the condensation of the refrigerant. When the first and second adsorbing cores (1, 2) adsorb the refrigerant, the second heat exchange fluid flows through the first and second evaporators (5, 6) to generate the heat of evaporation due to the evaporation of the refrigerant. Have been taken away,
When the adsorption core (1, 2) adsorbs the refrigerant, the first heat exchange fluid is retained in the condenser (3, 4),
The second heat exchange fluid flowing through the first and second evaporators (5, 6) flows into the indoor heat exchanger (15) for exchanging heat with room air to cool the room.
When switching between adsorption and desorption of the refrigerant by the adsorption cores (1, 2), the first heat exchange fluid staying in one of the condensers (3, 4) immediately before the switching is immediately after the switching. The first heat exchange fluid is retained in the other condenser (3, 4) and the other condenser (3, 4) is moved to the other condenser (3, 4). An adsorptive refrigeration apparatus for flowing the first heat exchange fluid.

Liquid refrigerant (L) is accommodated inside the bottom side of the first and second sealed containers (7, 8),
The first and second condensers (3, 4) are disposed so as to be exposed from the liquid refrigerant (L),
The adsorption refrigeration apparatus according to claim 1, wherein the first and second evaporators (5, 6) are arranged so as to be immersed in the liquid refrigerant (L).

When switching between adsorption and desorption of the refrigerant by the first and second adsorption cores (1, 2), the second heat flowing through one of the first and second evaporators (5, 6) immediately before the switching. Immediately after the switching, the exchange fluid is once moved to the indoor heat exchanger (15), and then the second heat exchange fluid flowing through the other evaporator (5, 6) is transferred to the indoor heat exchanger (15). The adsorption refrigeration apparatus according to claim 1 or 2, wherein