JP3911425B2

JP3911425B2 - Beverage supply equipment

Info

Publication number: JP3911425B2
Application number: JP2002042854A
Authority: JP
Inventors: 文誉斉藤; 博之飯田
Original assignee: Hoshizaki Electric Co Ltd
Current assignee: Hoshizaki Electric Co Ltd
Priority date: 2001-02-22
Filing date: 2002-02-20
Publication date: 2007-05-09
Anticipated expiration: 2022-02-20
Also published as: JP2002321794A

Description

【０００１】
【発明の属する技術分野】
本発明は、水槽内の冷却水で飲料を冷却して供給する飲料供給装置に関し、特に、冷却水を撹拌する撹拌羽根と撹拌モータとの間に冷却水の流れの流速を低下させる抵抗部材を設けること等によって、撹拌モータによる撹拌時に発生する回転軸回りの渦の発生を防止し、水流による水跳ねや、エアーの巻き込み音を防止することができる飲料供給装置に関するものである。
【０００２】
【従来の技術】
従来より、ビール等の飲料を冷却して供給する飲料供給装置について種々提案されている。
例えば、特開平１１−２６４６４４号公報に記載された飲料供給装置では、水槽内に形成された氷によって前記水槽内に貯留される冷却水を冷却し、冷却された冷却水によって飲料の原料等を冷却して供給する飲料供給装置において、前記水槽内の底部略中央部に向かう垂直状の冷却水の流れを発生させる攪拌手段と、前記水槽内の底部に形成され、前記垂直状の冷却水の流れを前記水槽の側壁方向に導く水流規制手段を有するように構成されている。
これにより、冷却水槽の水面近傍から底部にかけての冷却水の循環性が向上するので、飲料の販売が連続する状況においても冷却水の熱交換性が低下することなく、長時間にわたって安定した冷却能力を付与することができる。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述した特開平１１−２６４６４４号公報に記載された飲料供給装置においては、アジテータモータ４の回転軸４Ａに取り付けられたプロペラ４Ｂが所定の方向に回転することによって、冷却水槽１内の冷却水Ｗが水面から底部に向かう水流が発生する。このため、冷却水槽１内の冷却水Ｗの給水量が少ないと、アジテータモータ４の回転により回転軸４Ａ回りに渦が発生して、冷却水Ｗの水面の周囲の水位が上がって上部開口部の周囲から溢れる水跳ねや、エアーの巻き込み音が発生するという問題がある。
【０００４】
そこで、本発明は、上述した問題点を解決するためになされたものであり、冷却水を撹拌する撹拌羽根と撹拌モータとの間に冷却水の流れの流速を低下させる抵抗部材を設けること等によって、撹拌モータによる撹拌時に発生する回転軸回りの渦の発生を防止し、水流による水跳ねや、エアーの巻き込み音を防止することができる飲料供給装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
前記目的を達成するために、請求項１に係る飲料供給装置は、冷却手段によって冷却される冷却水を収容する水槽と、前記水槽内の底部に対して垂直状の冷却水の流れを発生させる撹拌手段とを備え、この冷却水によって飲料を冷却して供給する飲料供給装置において、前記撹拌手段は、撹拌モータと、前記撹拌モータの回転軸に取り付けられて、冷却水の流れを発生させる撹拌羽根と、前記攪拌モータの回転軸及び前記攪拌羽根を覆う網状の網部材と、前記撹拌羽根に対して前記垂直状の冷却水の流れの上流側に設けられて、該冷却水の流速を低下させる抵抗部材とを有することを特徴とする。
【０００６】
また、請求項２に係る飲料供給装置は、請求項１に記載の飲料供給装置において、前記抵抗部材は、略平板状の板部材を有し、前記板部材は、前記回転軸の軸方向に対して略垂直になるように設けられていることを特徴とする。
【０００７】
また、請求項３に係る飲料供給装置は、請求項１又は請求項２に記載の飲料供給装置において、前記抵抗部材は、複数の貫通孔が穿設されていることを特徴とする。
【０００８】
更に、請求項４に係る飲料供給装置は、冷却手段によって冷却される冷却水を収容する水槽と、前記水槽内の深さ方向に螺旋状に巻回されて配置されて供給される飲料を冷却する飲料冷却管と、前記飲料冷却管の内側に配置されて前記水槽内の底部に対して垂直状の冷却水の流れを発生させる撹拌手段とを備え、この冷却水によって飲料を冷却して供給する飲料供給装置において、前記撹拌手段は、冷却水の流れを発生させる撹拌羽根を有し、前記飲料冷却管は、前記撹拌羽根付近の上流側に対向する部分に、深さ方向の隙間を形成するように巻回される粗巻き部を有し、該飲料冷却管の外周部を流れる冷却水の一部が、前記粗巻き部を介して飲料冷却管の内側に流入することを特徴とする。
【０００９】
また、請求項４に記載の飲料供給装置において、前記冷却手段は、前記水槽内の深さ方向に螺旋状に巻回されて前記飲料冷却管の外側に配置される蒸発管と、前記蒸発管に冷媒を流して該蒸発管の周囲に氷を形成する冷凍装置とを有し、前記蒸発管は、水槽底部付近の巻径が、他の部分の巻径よりも小さく形成されている。これにより、水槽の底部付近の蒸発管と水槽内壁部との隙間を、該蒸発管の他の部分と水槽内壁部との隙間よりも大きくして、水槽底部付近の蓄氷量を増大させることができるため、水槽底部付近の冷却水の流速を速くしても、該水流によって水槽底部付近の氷が溶かされることなく、十分な冷却能力を維持することができる。また、撹拌手段による水槽底部への冷却水の流速を速くすることができるため、冷却能力を向上させることができて、水槽容量の小型化を図ることができる。
【００１０】
【発明の実施の形態】
以下、本発明に係る飲料供給装置について具体化した第１実施形態及び第２実施形態を図面に基づいて詳細に説明する。
先ず、第１実施形態に係る飲料供給装置の概略構成について図１に基づいて説明する。図１は第１実施形態に係る飲料供給装置の概略構成を示す側面図である。尚、飲料供給装置には、ビール等を貯留する図示しない飲料タンクが飲料パイプ２を介して接続されており、また、この飲料タンクは図示しない炭酸ガスボンベにより常時加圧されている。
図１に示すように、ビール等を冷却して供給する飲料供給装置１の外装を構成する外装ケース３内には、冷却水を貯留した水槽４と、この水槽４の下方にはコンプレッサ５、凝縮器６、及び凝縮器６を冷却する冷却ファン７等から構成される冷凍ユニットが設けられている。そして、この外装ケース３の上側は、蓋部材８によって覆われると共に、冷凍ユニットが収納される冷凍ユニット収納部の下面の４箇所（図１中では２箇所が示されている。）において脚部材９が固設されており、飲料供給装置１はこれらの脚部材９を介してテーブル等の上に配置されている。また、飲料供給装置１の前面上部には、コック１０が取り付けられており、後述の飲料冷却パイプ１２（図２参照）の抽出側端部に接続されている。また、飲料供給装置１の側面上部には飲料タンクに接続される飲料パイプ２が取り付けられ、後述の飲料冷却パイプ１２の供給側端部に接続されている。更に、コック１０の下方前面部には、上側にスノコが載置されるドレン皿１１が取り付けられている。また、冷却水が貯留される水槽４は、上面が開放される略直方体の槽であり、後述のように上面部に冷却水を撹拌するための撹拌モータ１３が取り付けられている（図２参照）。
【００１１】
次に、水槽４の概略構成について図２に基づいて説明する。図２は第１実施形態に係る飲料供給装置１の水槽４の概略構成を示す縦断側面図である。
図２に示すように、水槽４は、上方に開口するステンレス鋼板製の内箱１５と、この内箱１５の外側周囲に設けられる断熱壁１６とから構成されて、内箱１５内に貯留される冷却水１７は断熱されている。
【００１２】
また、コンプレッサ５、凝縮器６、及び冷却ファン７と共に冷凍ユニットの冷凍サイクルを構成する冷却器としての銅パイプ製の蒸発管１８は、螺旋状に巻回されて内箱１５の内周面のやや内側に、ステンレス鋼板製又は樹脂製の取付具１９を介して該内箱１５の内壁に固定されている。また、この蒸発管１８は、冷却水１７内に没して該冷却水１７を冷却するように構成され、該蒸発管１８の周囲には氷２０が成長される。
また、この蒸発管１８の内側には、ステンレスパイプ製の飲料冷却パイプ１２が、２重の螺旋状に巻回されて同心状に配置され、ステンレス鋼板製の取付具２２により冷却水１７内に没するように内箱１５の内壁に固定されている。また、この飲料冷却パイプ１２の供給側端部は水槽４の横側上部側壁より外側に延出され、上記飲料パイプ２に接続される。更に、該飲料冷却パイプ１２の抽出側端部は水槽４の前側上部側壁より外側に延出され、コック１０に接続されている。
【００１３】
また、水槽４の上端の開口部には、ステンレス鋼板製の略長方形の撹拌モータ取付板２１が横に架け渡されてビス止めにより取り付けられ、該撹拌モータ取付板２１の上面の略中央部には、後述のように撹拌モータ１３がビス止めによって固定されている。そして、この撹拌モータ１３の回転軸２５は、飲料冷却パイプ１２の略中心軸上に配置されると共に、内箱１５の深さの約半分の位置まで延出されている。また、この回転軸２５の先端部には、プロペラ２６が装着されている。このプロペラ２６は、撹拌モータ１３の回転軸２５の回転に伴って回転し、内箱１５内の冷却水１７を水槽４の下方に向けて矢印Ａ方向に流動させるように構成されている。
また、回転軸２５及びプロペラ２６と、飲料冷却パイプ１２との間には略円筒状に巻回されるステンレス製又は硬質合成樹脂製等の網状の網部材２７が、撹拌モータ取付板２１の下面からプロペラ２６よりも少し深い位置まで覆うように取り付けられている（図３参照）。これにより、蒸発管１８の回りに形成される氷２０が剥離しても、回転軸２５やプロペラ２６に当たるの防ぐことができる。
【００１４】
また、網部材２７の内側で、撹拌モータ１３の下面とプロペラ２６との間の略中央位置の水中には、この網部材２７の断面よりも少し小さい形状の板部材３０とステンレス鋼板製の取付具２９、２９によって構成される抵抗部材２８が取り付けられている（図４参照）。また、この板部材３０は該回転軸２５に対して略垂直になるように固定されている。また、この抵抗部材２８の板部材３０には後述のように小さな貫通孔３０Ｂが多数穿設されている（図４参照）。
【００１５】
これにより、プロペラ２６によって水槽４の下方に向けて矢印Ａ方向に流動する冷却水１７は、内箱１５の底部に沿って氷２０方向に流れ、この氷２０の内側面と飲料冷却パイプ１２との間に沿って矢印Ｂ方向に流れて、水面近傍へ流れる。そして、水面近傍の冷却水１７は、プロペラ２６の撹拌によってプロペラ２６に吸い寄せられて矢印Ｃ方向に流れて、網部材２７の上部を経て回転軸２５に沿って下方に流動し、抵抗部材２８の板部材３０に穿設される貫通孔３０Ｂを介してプロペラ２６に至る。従って、内箱１５内を矢印Ａ→矢印Ｂ→矢印Ｃの順に循環してプロペラ２６に至る冷却水１７は、抵抗部材２８によって該抵抗部材２８が無い場合よりも流量が低下されるため、回転軸２５回りの渦の発生が防止されて内箱１５の上端部周囲からの水跳ねや、エアーの巻き込み音などを防止することができる。
【００１６】
次に、撹拌モータ取付板２１への撹拌モータ１３、抵抗部材２８、網部材２７等の取り付けについて図３に基づいて説明する。図３は第１実施形態に係る飲料供給装置１の水槽４内の冷却水を撹拌する撹拌部の概略構成を示す組み立て斜視図である。
図３に示すように、先ず、撹拌モータ取付板２１の略中央位置に穿設されるモータ取付孔３１に、撹拌モータ１３の下端面に突き出して形成される略円柱状の位置決め凸部が嵌入される。そして、この撹拌モータ１３は、四隅を撹拌モータ取付板２１の上面にビス３２によって固定される。続いて、プロペラ２６の略中央部に貫通される断面略四角形の貫通孔が、回転軸２５の先端部に形成される雄ネジ部２５Ａに嵌挿され、該プロペラ２６がナット３３によって回転軸２５の先端部に固定される。尚、回転軸２５の先端部には、雄ネジ部２５Ａが形成されると共に、この雄ネジ部２５Ａの両側面は切削されて、断面略四角形に形成されている。
【００１７】
そして、撹拌モータ１３の回転軸２５の下方から抵抗部材２８の板部材３０に形成される略Ｕ字状の切欠溝部３０Ａを回転軸２５に差し込みつつ、該抵抗部材２８の各取付具２９、２９が撹拌モータ取付板２１の下面に当接される。続いて網部材２７がプロペラ２６の下方から挿入されて、該網部材２７の上端面部の外側略直角方向に延出される各取付部２７Ａ、２７Ａが抵抗部材２８の各取付具２９、２９に下側から重ねられると共に、各ビス３５、３５が各取付部２７Ａ、２７Ａ及び各取付具２９、２９に穿設される各貫通孔２７Ｂ、２７Ｂ、２９Ａ、２９Ａに挿入されて、撹拌モータ取付板２１に形成される各ネジ孔２１Ａ、２１Ａにネジ止めされる。これにより、撹拌モータ取付板２１に、撹拌モータ１３、プロペラ２６、抵抗部材２８、及び網部材２７等が取り付けられる。
【００１８】
次に、抵抗部材２８の概略構成について図４に基づいて説明する。図４は第１実施形態に係る飲料供給装置１の撹拌モータ１３とプロペラ２６との間に取り付けられる抵抗部材２８の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。
図４に示すように、抵抗部材２８は、網部材２７の内径よりも少し小さい直径のステンレス鋼板やアルミ板製等の略円板状の板部材３０と、ステンレス鋼板製等の各取付具２９、２９とによって構成されている。
また、板部材３０の中心部には、撹拌モータ１３の回転軸２５の外径よりも大きい直径の貫通孔３６が形成されると共に、該貫通孔３６の取付具２９、２９に対して略直角な半径方向には、回転軸２５の外径寸法よりも大きい幅寸法の溝部が切り欠かれて略Ｕ字状の切欠溝部３０Ａが形成されている。また、この板部材３０には所定径（第１実施形態では、直径約３ｍｍ〜５ｍｍである。）の貫通孔３０Ｂが多数穿設され、該貫通孔３０Ｂを介して水が流動するようになっている。
【００１９】
また、各取付具２９、２９の各一端縁部２９Ｂ、２９Ｂは、この板部材３０の中心に対して略対称に板部材３０の周縁部に溶接によって固定されている。尚、リベット止めやネジ止め等によって固定してもよい。そして、各取付具２９は、この固定される一端縁部２９Ｂから略直角に外側（図４（Ｂ）中、上側）に延出される第１延出部２９Ｃと、該第１延出部２９Ｃの端縁部から略直角外側方向（図４（Ｂ）中、左右外側方向）に延出される取付部２９Ｄとから形成されている。また、この各取付具２９、２９の各取付部２９Ｄ、２９Ｄには、上記のように各ビス３５、３５が挿通される各貫通孔２９Ａ、２９Ａが穿設されている。
【００２０】
以上詳細に説明した通り第１実施形態に係る飲料供給装置１は、撹拌モータ１３の下側に取り付けられる網部材２７の内側の冷却水１７中で、且つ該撹拌モータ１３とプロペラ２６との間に、回転軸２５に沿って流れる冷却水１７の流量を低下させる抵抗部材２８が設けられている。また、この抵抗部材２８は、回転軸２５の軸方向に対して略直角に設けられて、多数の小さな貫通孔３０Ｂが穿設される板部材３０と各取付具２９、２９より構成されている。
【００２１】
従って、撹拌モータ１３によるプロペラ２６の回転により発生する冷却水１７の流れは、抵抗部材２８の板部材３０に当たって減速され、回転軸２５回りの渦の発生を防止することができるため、水槽４の水面をほぼ水平状態に保つことができ、内箱１５の上端部周囲からの水跳ねや、エアーの巻き込み音などを防止することができる。また、抵抗部材２８を略平板状の板部材３０等で構成することができるため、簡易な構成にすることができ、製造コストの削減化を図ることができる。更に、板部材３０に穿設される多数の貫通孔３０Ｂの大きさや個数を変更することによって冷却水１７の流速を容易に調整することができるため、簡易な構成で水跳ねやエアーの巻き込み音の発生を確実に防止することができる。
【００２２】
次に、第２実施形態に係る飲料供給装置について図５に基づいて説明する。図５は第２実施形態に係る飲料供給装置の水槽４の概略構成を示す縦断側面図である。尚、以下の説明において上記図１乃至図４の第１実施形態に係る飲料供給装置１の構成と同一符号は、該第１実施形態に係る飲料供給装置１等の構成と同一あるいは相当部分を示すものである。
第２実施形態に係る飲料供給装置の概略構成は、第１実施形態に係る飲料供給装置１とほぼ同じ構成である。
但し、第２実施形態に係る飲料供給装置では、後述のように、上記抵抗部材２８が設けられておらず、飲料冷却パイプと蒸発管の構成が、第１実施形態に係る飲料供給装置１と異なっている。
【００２３】
ここで、図５に示すように、水槽４の内箱１５の内周面のやや内側に上記蒸発管１８に替えて配置される銅パイプ製の蒸発管５１は、螺旋状に巻回されて、ステンレス鋼板製又は樹脂製の取付具５２を介して該内箱１５の内壁に固定されている。また、この蒸発管５１の下端側２巻き分の巻径は、これよりも上側の巻径よりも小さく形成されている。また、この蒸発管５１は、上記蒸発管１８と同様に冷却水１７内に没して該冷却水１７を冷却するように構成され、該蒸発管５１の周囲には氷２０が成長される。従って、水槽４の底部における冷却水１７の流速が低速又はほとんど無い場合には、蒸発管５１の下端部には、各破線２０Ａ、２０Ａで示される部分まで氷２０が成長する。また、この蒸発管５１の下端部の２巻き分と内箱１５との間には、該蒸発管５１の上方部分と内箱１５との間よりも大きい隙間に氷２０が形成される。
【００２４】
また、この蒸発管５１の内側には、上記飲料冷却パイプ１２に替えて、ステンレスパイプ製の飲料冷却パイプ５５が、２重の螺旋状に巻回されて同心状に配置され、ステンレス鋼板製の取付具５６により冷却水１７内に没するように内箱１５の内壁に固定されている。そして、この飲料冷却パイプ５５の供給側端部は水槽４の横側上部側壁より外側に延出され、飲料パイプ２に接続される。一方、該飲料冷却パイプ５５の抽出側端部は水槽４の前側上部側壁より外側に延出され、コック１０に接続されている。
また、この２重の螺旋状に巻回される飲料冷却パイプ５５のうち、半径方向外側の飲料冷却パイプ５５Ａの最外周面と、各破線２０Ａ、２０Ａとの間には所定間隔の隙間が形成され、氷２０が各破線２０Ａ、２０Ａ部分まで成長しても、飲料冷却パイプ５５Ａと各破線２０Ａ、２０Ａ部分との間を冷却水１７が流れるように構成されている。
【００２５】
また、水槽４の上端の開口部には、ステンレス鋼板製の略長方形の撹拌モータ取付板２１が横に架け渡されてビス止めにより取り付けられ、該撹拌モータ取付板２１の上面の略中央部には、撹拌モータ１３がビス止めによって固定されている。そして、この撹拌モータ１３の回転軸２５は、飲料冷却パイプ５５の略中心軸上に配置されると共に、内箱１５の深さの約半分の位置まで延出されている。また、この回転軸２５の先端部には、プロペラ２６が装着されている。このプロペラ２６は、撹拌モータ１３の回転軸２５の回転に伴って回転し、内箱１５内の冷却水１７を水槽４の下方に向けて矢印６０方向に流動させるように構成されている。
また、回転軸２５及びプロペラ２６と、飲料冷却パイプ５５との間には略円筒状に巻回されるステンレス製又は硬質合成樹脂製等の網状の網部材２７が、撹拌モータ取付板２１の下面からプロペラ２６よりも少し深い位置まで覆うように取り付けられている。これにより、蒸発管５１の回りに形成される氷２０が剥離しても、回転軸２５やプロペラ２６に当たるの防ぐことができる。
【００２６】
また、２重の螺旋状に巻回される飲料冷却パイプ５５のうち、半径方向内側の飲料冷却パイプ５５Ｂは、下端部からプロペラ２６の下端部付近までは、上下のパイプがほぼ密着するように巻回され、このプロペラ２６の下端部に対向する付近から所定高さまでは、上下のパイプの間に隙間を形成するように所定巻回ピッチで巻回されて粗巻き部５７が形成されている（第２実施形態の場合は、粗巻き部５７の所定巻回ピッチは、パイプ径の約２倍のピッチ寸法である。また、この所定巻回ピッチで約５巻き分の粗巻き部５７が形成されている。）。そして、この粗巻き部５７の上側終端部から飲料冷却パイプ５５Ｂの上端部までは、上下のパイプがほぼ密着するように巻回されている。
【００２７】
また、２重の螺旋状に巻回される飲料冷却パイプ５５のうち、半径方向外側の飲料冷却パイプ５５Ａは、下端部から上記粗巻き部５７の下端部より少し上側のプロペラ２６に対向する付近までは、上下のパイプがほぼ密着するように巻回され、このプロペラ２６に対向する付近から上記粗巻き部５７の少し上側の所定高さまでは、上下のパイプの間に隙間を形成するように所定巻回ピッチで巻回されて粗巻き部５８が形成されている（第２実施形態の場合は、粗巻き部５８の所定巻回ピッチは、パイプ径の約２倍のピッチ寸法である。また、この所定巻回ピッチで約６巻き分の粗巻き部５８が形成されている。）。そして、この粗巻き部５８の上側終端部から飲料冷却パイプ５５Ａの上端部までは、上下のパイプがほぼ密着するように巻回されている。
【００２８】
これにより、プロペラ２６によって水槽４の下方に向けて矢印６０方向に流動する冷却水１７は、内箱１５の底部に沿って氷２０方向に流れ、蒸発管５１の下端部の各破線２０Ａ、２０Ａの部分まで形成される氷２０に衝突しつつ、該破線２０Ａと飲料冷却パイプ５５Ａとの間を矢印６１方向に流れる。
そして、冷却水１７は、この氷２０の内側面と外側の飲料冷却パイプ５５Ａとの間に沿って上側方向（矢印６２方向）に流れて、粗巻き部５８に達した場合には、該冷却水１７の一部は、粗巻き部５８及び粗巻き部５７を流れて飲料冷却パイプ５５の内側方向（矢印６３方向）に流れ、網部材２７を経て回転軸２５に沿って下方に流動し、プロペラ２６に至る。他方、粗巻き部５８を介して飲料冷却パイプ５５の内側に流れず、氷２０の内面に沿って上方向（矢印６４方向）に流れて水面近傍に達した冷却水１７は、プロペラ２６の撹拌によってプロペラ２６に吸い寄せられて矢印６５方向に流れて、網部材２７の上部を経て回転軸２５に沿って下方に流動し、プロペラ２６に至る。
【００２９】
以上説明した通り、第２実施形態に係る飲料供給装置では、プロペラ２６によって水槽４の底面部に向かって流動する冷却水１７の一部は、各粗巻き部５８、５７から飲料冷却パイプ５５の内側に流れてプロペラ２６に至る（矢印６３）ため、飲料冷却管５５と内箱１５のと間を流れて水面近傍に至る（矢印６４→矢印６５）冷却水１７の量が減少する。
これにより、プロペラ２６の回転による水槽４の底部への冷却水１７の流速を速くしても、水面部付近の冷却水１７の流れの流速を低下させることができるため、水槽４の水面をほぼ水平状態に保つことができ、冷却水１７の水跳ねを無くして冷却水１７の減少を防止することができる。また、プロペラ２６の回転による水槽４の底部への冷却水１７の流速を速くしても、水面部付近の冷却水１７の流れの流速を低下させることができるため、プロペラ２６の回転により発生する渦を消して、エアーの巻き込み音を防止することができる。また、プロペラ２６の回転による水槽４の底部への冷却水１７の流速を速くすることができるため、冷却能力の向上を図ることができて、水槽４の容量の小型化を図ることができる。更に、飲料冷却パイプ５５の各粗巻き部５７、５８の隙間を冷却水１７が通過するため、飲料冷却パイプ５５の熱交換面積を増大させることができ、冷却能力の更なる向上を図ることができる。
また、蒸発管５１の下端部の２巻き分と内箱１５との間には、該蒸発管５１の上方部分と内箱１５との間よりも大きい隙間に氷２０が形成されるため、水槽４の底部の蓄氷量を増大させることができる。これにより、水槽４の底部付近の冷却水１７の流速を速くして、この冷却水１７の水流によって氷２０の下端部付近の破線２０Ａの部分が溶かされても、この蒸発管５１の下端部の２巻き分付近と内箱１５との間の氷２０は溶かされることなく、十分な冷却能力を維持することができる。また、プロペラ２６の回転による水槽４の底部への冷却水１７の流速を速くすることができるため、冷却能力を向上させることができて、水槽４の容量の小型化を図ることができる。
【００３０】
尚、本発明は前記第１実施形態及び第２実施形態に限定されることはなく、本発明の要旨を逸脱しない範囲内で種々の改良、変形が可能であることは勿論である。例えば、以下のようにしてもよい。
（ａ）前記第１実施形態では、抵抗部材２８の板部材３０は、略円板状であるが、図６に示すように、略六角形状の板部材４１を有する抵抗部材４０にしてもよい。これにより、抵抗部材４０の組み立て時に、各取付具２９、２９の板部材４１に対する位置決めを容易に行うことができる。
図６は他の実施形態に係る飲料供給装置１の撹拌モータ１３とプロペラ２６との間に取り付けられる抵抗部材４０の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。尚、図６において上記図４の抵抗部材２８の構成と同一符号は、該抵抗部材２８の構成と同一あるいは相当部分を示すものである。
（ｂ）前記第１実施形態では、抵抗部材２８の板部材３０は一枚であったが、図７に示すように、２枚の板部材３０を回転軸２５の軸方向に有する抵抗部材４２等、板部材３０を回転軸２５の軸方向に複数枚有する抵抗部材の構成にしてもよい。これにより、回転軸２５回りの渦の発生をより強力に防止することができる。
図７は他の実施形態に係る飲料供給装置１の撹拌モータ１３とプロペラ２６との間に取り付けられる抵抗部材４２の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。尚、図７において上記図４の抵抗部材２８の構成と同一符号は、該抵抗部材２８の構成と同一あるいは相当部分を示すものである。
【００３１】
【発明の効果】
以上説明した通り請求項１に係る飲料供給装置は、水槽内には冷却手段によって冷却される冷却水が収容され、この冷却水によって飲料が冷却されて供給される。また、この冷却水は、撹拌モータと、この撹拌モータの回転軸に取り付けられる撹拌羽根によって前記水槽内の底部に対して垂直状の冷却水の流れが発生される。そして、前記撹拌羽根に対して垂直状の冷却水の流れの上流側には、該冷却水の流速を低下させる抵抗部材が設けられている。更に、前記攪拌モータの回転軸及び前記攪拌羽根を覆う網状の網部材が配設されている。
これにより、垂直状の冷却水の流れの流速を抵抗部材で低下させることができるため、水槽の水面をほぼ水平状態に保つことができ、冷却水の水跳ねを無くして冷却水の減少を防止することができる飲料供給装置を提供することができる。また、抵抗部材により撹拌モータの回転軸回りに発生する渦を消して、エアーの巻き込み音を防止することができる飲料供給装置を提供することができる。更に、網部材が配設されているので、冷却手段によって形成された氷が剥離しても、回転軸や攪拌羽根に当たるの防ぐことができる。
【００３２】
また、請求項２に係る飲料供給装置は、請求項１に記載の飲料供給装置において、前記抵抗部材は、略平板状の板部材を有し、前記板部材は、前記回転軸の軸方向に対して略垂直になるように設けられている。
これにより、垂直状の冷却水の流れは、この板部材に当たって減速され、冷却水の水跳ねを確実に防止することができると共に、回転軸回りの渦を消してエアーの巻き込み音を防止することができる飲料供給装置を提供することができる。また、抵抗部材を略平板状の板部材で構成することができるため、簡易な構成にすることができ、製造コストの削減化を図ることができる飲料供給装置を提供することができる。
【００３３】
また、請求項３に係る飲料供給装置は、請求項１又は請求項２に記載の飲料供給装置において、前記抵抗部材は、複数の貫通孔が穿設されている。
これにより、この貫通孔の大きさや個数を変更することによって冷却水の流速を容易に調整することができるため、簡易な構成で水跳ねやエアーの巻き込み音の発生を確実に防止することができる飲料供給装置を提供することができる。
【００３４】
更に、請求項４に係る飲料供給装置は、水槽内には冷却手段によって冷却される冷却水が収容されている。また、この水槽内には、深さ方向に螺旋状に巻回される飲料冷却管が配置されて、該飲料冷却管に供給される飲料がこの冷却水によって冷却される。また、この冷却水は、飲料冷却管の内側に配置される撹拌手段の撹拌羽根によって前記水槽内の底部に対して垂直状の冷却水の流れが発生される。また、飲料冷却管の撹拌羽根付近の上流側に対向する部分には、深さ方向に隙間が形成される粗巻き部が設けられ、該飲料冷却管の外周部を流れる冷却水の一部が、この粗巻き部を介して飲料冷却管の内側に流入する。
これにより、水槽の底部から水面部に達する冷却水の水量が減少して、水面部付近の冷却水の流れの流速を低下させることができるため、水槽の水面をほぼ水平状態に保つことができ、冷却水の水跳ねを無くして冷却水の減少を防止することができる飲料供給装置を提供することができる。また、水面部付近の冷却水の流れの流速を低下させることができるため、撹拌羽根の回転により発生する渦を消して、エアーの巻き込み音を防止することができる飲料供給装置を提供することができる。更に、飲料冷却管の粗巻き部の隙間を冷却水が通過するため、飲料冷却管の熱交換面積を増大させることができ、冷却能力の向上を図ることができる飲料供給装置を提供することができる。
そして、前記冷却手段は、前記水槽内の深さ方向に螺旋状に巻回されて前記飲料冷却管の外側に配置される蒸発管と、前記蒸発管に冷媒を流して該蒸発管の周囲に氷を形成する冷凍装置とを有し、前記蒸発管は、水槽底部付近の巻径が、他の部分の巻径よりも小さく形成されている。これにより、水槽の底部付近の蒸発管と水槽内壁部との隙間を、該蒸発管の他の部分と水槽内壁部との隙間よりも大きくして、水槽底部付近の蓄氷量を増大させることができる。このため、水槽底部付近の冷却水の流速を速くしても、該水流によって水槽底部付近の氷が溶かされることなく、十分な冷却能力を維持することができる。また、撹拌手段による水槽底部への冷却水の流速を速くすることができるため、冷却能力を向上させることができて、水槽容量の小型化を図ることができる。
【図面の簡単な説明】
【図１】第１実施形態に係る飲料供給装置の概略構成を示す側面図である。
【図２】第１実施形態に係る飲料供給装置の水槽の概略構成を示す縦断側面図である。
【図３】第１実施形態に係る飲料供給装置の水槽内の冷却水を撹拌する撹拌部の概略構成を示す組み立て斜視図である。
【図４】第１実施形態に係る飲料供給装置の撹拌モータとプロペラとの間に取り付けられる抵抗部材の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。
【図５】第２実施形態に係る飲料供給装置の水槽の概略構成を示す縦断側面図である。
【図６】他の実施形態に係る飲料供給装置の撹拌モータとプロペラとの間に取り付けられる抵抗部材の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。
【図７】他の実施形態に係る飲料供給装置の撹拌モータとプロペラとの間に取り付けられる抵抗部材の概略構成を示す図で、（Ａ）は平面図、（Ｂ）は側面図である。
【符号の説明】
１飲料供給装置
４水槽
３前側上横桟
１２、５５飲料冷却パイプ
１３撹拌モータ
１５内箱
１６断熱壁
１７冷却水
１８、５１蒸発管
２０氷
２０Ａ破線
２５回転軸
２６プロペラ
２７網部材
２８、４０、４２抵抗部材
２９取付具
３０、４１板部材
５７、５８粗巻き部
６０〜６５、Ａ〜Ｃ矢印[0001]
BACKGROUND OF THE INVENTION
 The present invention relates to a beverage supply apparatus that cools and supplies a beverage with cooling water in a water tank, and in particular, a resistance member that reduces the flow rate of cooling water between a stirring blade that stirs cooling water and a stirring motor. The present invention relates to a beverage supply device that can prevent the generation of vortices around a rotation axis that occurs during stirring by a stirring motor, and can prevent water splashing due to water flow and air entrainment noise.
[0002]
[Prior art]
 Conventionally, various drink supply devices for cooling and supplying a beverage such as beer have been proposed.
 For example, in the beverage supply apparatus described in JP-A-11-264644, the cooling water stored in the water tank is cooled by ice formed in the water tank, and the beverage ingredients and the like are cooled by the cooled cooling water. In the beverage supply apparatus to be cooled and supplied, stirring means for generating a flow of vertical cooling water toward the substantially central portion of the bottom in the water tank, and the vertical cooling water formed at the bottom of the water tank. It is comprised so that it may have the water flow control means which guides a flow to the side wall direction of the said water tank.
 This improves the circulation of the cooling water from the vicinity of the water surface to the bottom of the cooling water tank, so that the cooling water heat exchange performance does not deteriorate even in situations where beverage sales continue, and the cooling capacity is stable over a long period of time. Can be granted.
[0003]
[Problems to be solved by the invention]
 However, in the beverage supply apparatus described in the above-mentioned JP-A-11-264644, the propeller 4B attached to the rotating shaft 4A of the agitator motor 4 rotates in a predetermined direction, whereby the cooling in the cooling water tank 1 is performed. A water flow is generated in which the water W is directed from the water surface to the bottom. For this reason, if the supply amount of the cooling water W in the cooling water tank 1 is small, a vortex is generated around the rotating shaft 4A by the rotation of the agitator motor 4, the water level around the water surface of the cooling water W rises, and the upper opening There is a problem that water splashes from the surroundings and air entrainment noise occurs.
[0004]
 Accordingly, the present invention has been made to solve the above-described problems, and a resistance member that reduces the flow rate of the cooling water is provided between the stirring blade that stirs the cooling water and the stirring motor. Thus, an object of the present invention is to provide a beverage supply device that can prevent the generation of vortices around the rotation axis that occur during stirring by a stirring motor, and can prevent water splashing and air entrainment noise.
[0005]
[Means for Solving the Problems]
 In order to achieve the above object, a beverage supply device according to claim 1 generates a water tank containing cooling water cooled by a cooling means, and a flow of cooling water perpendicular to the bottom of the water tank. In the beverage supply apparatus comprising the agitation unit and cooling the beverage with the cooling water and supplying the agitation unit, the agitation unit is attached to the agitation motor and the rotation shaft of the agitation motor to generate the flow of the cooling water. Feathers,A net-like net member covering the rotating shaft of the stirring motor and the stirring blade;It is provided in the upstream of the flow of the said perpendicular | vertical cooling water with respect to the said stirring blade, It has a resistance member which reduces the flow rate of this cooling water, It is characterized by the above-mentioned.
[0006]
 Moreover, the drink supply apparatus which concerns on Claim 2 is a drink supply apparatus of Claim 1, The said resistance member has a substantially flat plate member, and the said plate member is an axial direction of the said rotating shaft. It is provided so that it may become substantially perpendicular | vertical with respect to it.
[0007]
 A beverage supply device according to claim 3 is the beverage supply device according to claim 1 or 2, wherein the resistance member has a plurality of through holes.
[0008]
 Furthermore, the drink supply apparatus which concerns on Claim 4 cools the drink supplied by the water tank which accommodates the cooling water cooled by the cooling means, and being arrange | positioned spirally wound in the depth direction in the said water tank. And a stirring means that is disposed inside the beverage cooling pipe and generates a flow of cooling water perpendicular to the bottom of the water tank. The beverage is cooled and supplied by the cooling water. In the beverage supply apparatus, the stirring means has a stirring blade for generating a flow of cooling water, and the beverage cooling pipe forms a gap in the depth direction at a portion facing the upstream side in the vicinity of the stirring blade. A portion of the cooling water flowing through the outer periphery of the beverage cooling pipe flows into the inside of the beverage cooling pipe through the coarse winding part. .
[0009]
 5. The beverage supply device according to claim 4, wherein the cooling means includes an evaporation pipe that is spirally wound in a depth direction in the water tank and disposed outside the beverage cooling pipe, and the evaporation pipe. And a refrigeration apparatus for forming ice around the evaporation pipe. The evaporation pipe is formed such that the winding diameter near the bottom of the water tank is smaller than the winding diameter of other portions.TheThereby, the gap between the evaporation pipe near the bottom of the water tank and the inner wall of the water tank is made larger than the gap between the other part of the evaporation pipe and the inner wall of the water tank, thereby increasing the amount of ice stored near the bottom of the water tank. Therefore, even if the flow rate of the cooling water near the bottom of the water tank is increased, sufficient cooling capacity can be maintained without melting the ice near the bottom of the water tank by the water flow. Moreover, since the flow rate of the cooling water to the bottom of the water tank by the stirring means can be increased, the cooling capacity can be improved, and the water tank capacity can be reduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
 DESCRIPTION OF EMBODIMENTS Hereinafter, a first embodiment and a second embodiment embodied about a beverage supply device according to the present invention will be described in detail based on the drawings.
 First, a schematic configuration of the beverage supply device according to the first embodiment will be described with reference to FIG. FIG. 1 is a side view showing a schematic configuration of a beverage supply apparatus according to the first embodiment. Note that a beverage tank (not shown) for storing beer and the like is connected to the beverage supply device via a beverage pipe 2, and this beverage tank is constantly pressurized by a carbon dioxide gas cylinder (not shown).
 As shown in FIG. 1, in an outer case 3 that constitutes an outer case of a beverage supply device 1 that cools and supplies beer and the like, a water tank 4 that stores cooling water, and a compressor 5 that is disposed below the water tank 4, A refrigeration unit including a condenser 6 and a cooling fan 7 for cooling the condenser 6 is provided. And the upper side of this exterior case 3 is covered with the cover member 8, and is a leg member at four locations (two locations are shown in FIG. 1) on the lower surface of the refrigeration unit storage portion in which the refrigeration unit is stored. 9 is fixed, and the beverage supply device 1 is disposed on a table or the like via these leg members 9. Moreover, the cock 10 is attached to the front upper part of the drink supply apparatus 1, and is connected to the extraction side end part of the drink cooling pipe 12 (refer FIG. 2) mentioned later. A beverage pipe 2 connected to a beverage tank is attached to the upper side of the beverage supply device 1 and is connected to a supply side end of a beverage cooling pipe 12 described later. Further, a drain pan 11 on which the slats are placed is attached to the lower front portion of the cock 10. Further, the water tank 4 in which the cooling water is stored is a substantially rectangular parallelepiped tank whose upper surface is opened, and a stirring motor 13 for stirring the cooling water is attached to the upper surface portion as will be described later (see FIG. 2). ).
[0011]
 Next, a schematic configuration of the water tank 4 will be described with reference to FIG. FIG. 2 is a longitudinal side view showing a schematic configuration of the water tank 4 of the beverage supply device 1 according to the first embodiment.
 As shown in FIG. 2, the water tank 4 includes an inner box 15 made of a stainless steel plate that opens upward, and a heat insulating wall 16 provided around the outer side of the inner box 15, and is stored in the inner box 15. The cooling water 17 is insulated.
[0012]
 The evaporator pipe 18 made of copper pipe as a cooler constituting the refrigeration cycle of the refrigeration unit together with the compressor 5, the condenser 6, and the cooling fan 7 is wound in a spiral shape on the inner peripheral surface of the inner box 15. A little inside, it is fixed to the inner wall of the inner box 15 via a stainless steel plate or resin fitting 19. The evaporation pipe 18 is configured to be immersed in the cooling water 17 to cool the cooling water 17, and ice 20 is grown around the evaporation pipe 18.
 Inside the evaporation pipe 18, a beverage cooling pipe 12 made of stainless steel pipe is wound in a double spiral shape and arranged concentrically, and is placed in the cooling water 17 by a fitting 22 made of stainless steel plate. It is fixed to the inner wall of the inner box 15 so as to be immersed. Further, the supply side end of the beverage cooling pipe 12 extends outward from the lateral upper side wall of the water tank 4 and is connected to the beverage pipe 2. Further, the extraction side end of the beverage cooling pipe 12 extends outward from the front upper side wall of the water tank 4 and is connected to the cock 10.
[0013]
 In addition, a substantially rectangular stirring motor mounting plate 21 made of stainless steel plate is horizontally laid across the opening at the upper end of the water tank 4 and is attached by screwing. The stirring motor mounting plate 21 has a substantially central portion on the upper surface thereof. As will be described later, the agitation motor 13 is fixed by screwing. And the rotating shaft 25 of this stirring motor 13 is arrange | positioned on the approximate center axis | shaft of the drink cooling pipe 12, and is extended to the position of about the half of the depth of the inner box 15. FIG. A propeller 26 is attached to the tip of the rotating shaft 25. The propeller 26 is configured to rotate in accordance with the rotation of the rotating shaft 25 of the agitation motor 13, and to cause the cooling water 17 in the inner box 15 to flow downward in the water tank 4 in the direction of arrow A.
 Further, a net-like net member 27 made of stainless steel or hard synthetic resin, which is wound in a substantially cylindrical shape, is provided between the rotating shaft 25 and the propeller 26 and the beverage cooling pipe 12. To a position slightly deeper than the propeller 26 (see FIG. 3). Thereby, even if the ice 20 formed around the evaporation pipe 18 is peeled off, it can be prevented from hitting the rotating shaft 25 and the propeller 26.
[0014]
 Further, inside the mesh member 27, the plate member 30 having a shape slightly smaller than the cross section of the mesh member 27 and a stainless steel plate is attached in the water at a substantially central position between the lower surface of the stirring motor 13 and the propeller 26. A resistance member 28 constituted by the tools 29 and 29 is attached (see FIG. 4). The plate member 30 is fixed so as to be substantially perpendicular to the rotating shaft 25. The plate member 30 of the resistance member 28 is provided with a large number of small through holes 30B as described later (see FIG. 4).
[0015]
 Thereby, the cooling water 17 flowing in the direction of arrow A toward the lower side of the water tank 4 by the propeller 26 flows in the direction of the ice 20 along the bottom of the inner box 15, and the inner surface of the ice 20 and the beverage cooling pipe 12 It flows in the direction of arrow B along the gap and flows near the water surface. Then, the cooling water 17 in the vicinity of the water surface is attracted to the propeller 26 by the stirring of the propeller 26, flows in the direction of arrow C, flows downward along the rotation shaft 25 through the upper portion of the mesh member 27, and the resistance member 28 The propeller 26 is reached through a through hole 30B formed in the plate member 30. Therefore, the cooling water 17 that circulates through the inner box 15 in the order of arrow A → arrow B → arrow C and reaches the propeller 26 has a lower flow rate than the case without the resistance member 28 due to the resistance member 28. Occurrence of a vortex around the shaft 25 is prevented, and water splash from the periphery of the upper end portion of the inner box 15 and air entrainment noise can be prevented.
[0016]
 Next, attachment of the agitation motor 13, the resistance member 28, the mesh member 27, and the like to the agitation motor attachment plate 21 will be described with reference to FIG. FIG. 3 is an assembled perspective view illustrating a schematic configuration of a stirring unit that stirs the cooling water in the water tank 4 of the beverage supply device 1 according to the first embodiment.
 As shown in FIG. 3, first, a substantially cylindrical positioning convex portion that protrudes from the lower end surface of the stirring motor 13 is fitted into the motor mounting hole 31 that is formed at a substantially central position of the stirring motor mounting plate 21. Is done. The stirring motor 13 is fixed to the upper surface of the stirring motor mounting plate 21 with screws 32 at four corners. Subsequently, a through-hole having a substantially rectangular cross section that passes through a substantially central portion of the propeller 26 is fitted into a male screw portion 25 A formed at the distal end portion of the rotary shaft 25, and the propeller 26 is rotated by the nut 33. It is fixed to the tip. A male screw portion 25A is formed at the tip of the rotary shaft 25, and both side surfaces of the male screw portion 25A are cut to have a substantially rectangular cross section.
[0017]
 Then, while inserting a substantially U-shaped notch groove portion 30 A formed in the plate member 30 of the resistance member 28 from below the rotation shaft 25 of the stirring motor 13 into the rotation shaft 25, the fixtures 29, 29 of the resistance member 28. Is brought into contact with the lower surface of the stirring motor mounting plate 21. Subsequently, the mesh member 27 is inserted from below the propeller 26, and the attachment portions 27A, 27A extending in the direction substantially perpendicular to the outer side of the upper end surface portion of the mesh member 27 are respectively attached to the attachment members 29, 29 of the resistance member 28. The screws 35 are stacked from the side, and the screws 35 are inserted into the through holes 27B, 27B, 29A and 29A formed in the mounting portions 27A and 27A and the mounting tools 29 and 29, respectively. Are screwed into the screw holes 21A and 21A. As a result, the stirring motor 13, the propeller 26, the resistance member 28, the mesh member 27, and the like are attached to the stirring motor mounting plate 21.
[0018]
 Next, a schematic configuration of the resistance member 28 will be described with reference to FIG. FIG. 4 is a diagram illustrating a schematic configuration of a resistance member 28 attached between the agitation motor 13 and the propeller 26 of the beverage supply device 1 according to the first embodiment, where (A) is a plan view and (B) is a side view. It is.
 As shown in FIG. 4, the resistance member 28 includes a substantially disc-shaped plate member 30 made of a stainless steel plate or aluminum plate having a diameter slightly smaller than the inner diameter of the mesh member 27, and each fixture 29 made of stainless steel plate. , 29.
 Further, a through hole 36 having a diameter larger than the outer diameter of the rotating shaft 25 of the stirring motor 13 is formed at the center of the plate member 30, and substantially perpendicular to the fixtures 29, 29 of the through hole 36. In the radial direction, a groove portion having a width larger than the outer diameter of the rotary shaft 25 is cut out to form a substantially U-shaped cutout groove portion 30A. The plate member 30 is provided with a large number of through holes 30B having a predetermined diameter (in the first embodiment, the diameter is about 3 mm to 5 mm), and water flows through the through holes 30B. ing.
[0019]
 Further, the one end edges 29B and 29B of the fixtures 29 and 29 are fixed to the peripheral edge of the plate member 30 by welding substantially symmetrically with respect to the center of the plate member 30. It may be fixed by riveting or screwing. Each fixture 29 includes a first extending portion 29C that extends outward (upward in FIG. 4B) from the fixed one end edge portion 29B, and the first extending portion 29C. And an attachment portion 29D extending from the end edge portion in a substantially right-angled outward direction (left and right outward direction in FIG. 4B). Further, as described above, the through holes 29A and 29A through which the screws 35 and 35 are inserted are formed in the mounting portions 29D and 29D of the mounting tools 29 and 29, respectively.
[0020]
 As described above in detail, the beverage supply device 1 according to the first embodiment is in the cooling water 17 inside the mesh member 27 attached to the lower side of the stirring motor 13 and between the stirring motor 13 and the propeller 26. Further, a resistance member 28 for reducing the flow rate of the cooling water 17 flowing along the rotation shaft 25 is provided. The resistance member 28 includes a plate member 30 that is provided at a substantially right angle with respect to the axial direction of the rotary shaft 25 and has a large number of small through holes 30 B and attachments 29 and 29. .
[0021]
 Accordingly, the flow of the cooling water 17 generated by the rotation of the propeller 26 by the stirring motor 13 is decelerated by hitting the plate member 30 of the resistance member 28, and the generation of vortices around the rotating shaft 25 can be prevented. The water surface can be kept almost horizontal, and water splash from the periphery of the upper end portion of the inner box 15 and air entrainment noise can be prevented. Moreover, since the resistance member 28 can be comprised by the substantially flat plate member 30 grade | etc., It can be set as a simple structure and can aim at reduction of manufacturing cost. Furthermore, since the flow rate of the cooling water 17 can be easily adjusted by changing the size and number of the large number of through holes 30B drilled in the plate member 30, water splashing and air entrainment noise can be achieved with a simple configuration. Can be reliably prevented.
[0022]
 Next, a beverage supply device according to a second embodiment will be described with reference to FIG. FIG. 5 is a longitudinal side view showing a schematic configuration of the water tank 4 of the beverage supply device according to the second embodiment. In the following description, the same reference numerals as those of the beverage supply device 1 according to the first embodiment in FIGS. 1 to 4 are the same as or equivalent to those of the beverage supply device 1 according to the first embodiment. It is shown.
 The schematic configuration of the beverage supply device according to the second embodiment is substantially the same as that of the beverage supply device 1 according to the first embodiment.
 However, in the beverage supply device according to the second embodiment, the resistance member 28 is not provided as described later, and the configuration of the beverage cooling pipe and the evaporation pipe is the same as that of the beverage supply device 1 according to the first embodiment. Is different.
[0023]
 Here, as shown in FIG. 5, a copper pipe-made evaporation pipe 51 arranged in place of the evaporation pipe 18 slightly inside the inner peripheral surface of the inner box 15 of the water tank 4 is spirally wound. These are fixed to the inner wall of the inner box 15 via a stainless steel or resin fitting 52. Further, the winding diameter of the two windings on the lower end side of the evaporation pipe 51 is formed smaller than the winding diameter on the upper side. The evaporation pipe 51 is configured to be immersed in the cooling water 17 to cool the cooling water 17 like the evaporation pipe 18, and the ice 20 is grown around the evaporation pipe 51. Therefore, when the flow rate of the cooling water 17 at the bottom of the water tank 4 is low or almost absent, the ice 20 grows at the lower end of the evaporation pipe 51 up to the portions indicated by the broken lines 20A and 20A. Further, ice 20 is formed between the two windings at the lower end of the evaporation pipe 51 and the inner box 15 in a larger gap than between the upper portion of the evaporation pipe 51 and the inner box 15.
[0024]
 In addition, instead of the beverage cooling pipe 12, a beverage cooling pipe 55 made of stainless steel pipe is wound in a double spiral shape and arranged concentrically inside the evaporation pipe 51, and is made of stainless steel plate. The fixture 56 is fixed to the inner wall of the inner box 15 so as to be immersed in the cooling water 17. Then, the supply side end of the beverage cooling pipe 55 extends outward from the lateral upper side wall of the water tank 4 and is connected to the beverage pipe 2. On the other hand, the extraction side end of the beverage cooling pipe 55 extends outward from the front upper side wall of the water tank 4 and is connected to the cock 10.
 Further, among the beverage cooling pipes 55 wound in a double spiral shape, a gap of a predetermined interval is formed between the outermost peripheral surface of the beverage cooling pipe 55A on the radially outer side and the broken lines 20A, 20A. Even if the ice 20 grows up to the broken lines 20A and 20A, the cooling water 17 flows between the beverage cooling pipe 55A and the broken lines 20A and 20A.
[0025]
 In addition, a substantially rectangular stirring motor mounting plate 21 made of stainless steel plate is horizontally laid across the opening at the upper end of the water tank 4 and is attached by screwing. The stirring motor mounting plate 21 has a substantially central portion on the upper surface thereof. The stirring motor 13 is fixed by screwing. The rotating shaft 25 of the stirring motor 13 is disposed on the substantially central axis of the beverage cooling pipe 55 and extends to a position about half the depth of the inner box 15. A propeller 26 is attached to the tip of the rotating shaft 25. The propeller 26 is configured to rotate in accordance with the rotation of the rotating shaft 25 of the agitation motor 13 so that the cooling water 17 in the inner box 15 flows in the direction of the arrow 60 toward the lower side of the water tank 4.
 Further, between the rotating shaft 25 and the propeller 26 and the beverage cooling pipe 55, a net-like net member 27 made of stainless steel or hard synthetic resin wound in a substantially cylindrical shape is provided on the lower surface of the stirring motor mounting plate 21. To a position slightly deeper than the propeller 26. Thereby, even if the ice 20 formed around the evaporation pipe 51 is peeled off, it can be prevented from hitting the rotating shaft 25 or the propeller 26.
[0026]
 Of the beverage cooling pipes 55 wound in a double spiral shape, the beverage cooling pipe 55B on the radially inner side is such that the upper and lower pipes are substantially in close contact from the lower end to the vicinity of the lower end of the propeller 26. In a predetermined height from the vicinity of the lower end of the propeller 26, the rough winding portion 57 is formed by winding at a predetermined winding pitch so as to form a gap between the upper and lower pipes. (In the case of the second embodiment, the predetermined winding pitch of the coarsely wound portion 57 is about twice as large as the pipe diameter. In addition, the roughly wound portion 57 of about 5 turns is provided at this predetermined winding pitch. Formed). The upper and lower pipes are wound so as to be in close contact with each other from the upper end portion of the rough winding portion 57 to the upper end portion of the beverage cooling pipe 55B.
[0027]
 Of the beverage cooling pipes 55 wound in a double spiral shape, the radially outer beverage cooling pipe 55A is located near the propeller 26 slightly above the lower end of the coarsely wound portion 57 from the lower end. Up and down, the upper and lower pipes are wound so as to be in close contact with each other, and a gap is formed between the upper and lower pipes at a predetermined height slightly above the rough winding portion 57 from near the propeller 26. The rough winding portion 58 is formed by winding at a predetermined winding pitch (in the case of the second embodiment, the predetermined winding pitch of the rough winding portion 58 is a pitch dimension about twice the pipe diameter. Moreover, the rough winding part 58 for about 6 turns is formed with this predetermined winding pitch.) The upper and lower pipes are wound so as to be in close contact with each other from the upper end portion of the coarsely wound portion 58 to the upper end portion of the beverage cooling pipe 55A.
[0028]
 Thereby, the cooling water 17 flowing in the direction of the arrow 60 toward the lower side of the water tank 4 by the propeller 26 flows in the direction of the ice 20 along the bottom of the inner box 15, and the broken lines 20 A and 20 A at the lower end of the evaporation pipe 51. It flows in the direction of arrow 61 between the broken line 20A and the beverage cooling pipe 55A while colliding with the ice 20 formed up to this portion.
 Then, when the cooling water 17 flows upward (in the direction of the arrow 62) between the inner side surface of the ice 20 and the outer beverage cooling pipe 55A and reaches the rough winding portion 58, the cooling water 17 is cooled. A part of the water 17 flows through the rough winding portion 58 and the rough winding portion 57 and flows in the inner direction of the beverage cooling pipe 55 (in the direction of the arrow 63), flows downward along the rotating shaft 25 via the net member 27, Propeller 26 is reached. On the other hand, the cooling water 17 that has flown upward along the inner surface of the ice 20 (in the direction of the arrow 64) and has reached the vicinity of the water surface without flowing into the beverage cooling pipe 55 via the rough winding portion 58 is stirred by the propeller 26. Is sucked by the propeller 26, flows in the direction of the arrow 65, flows downward along the rotating shaft 25 through the upper portion of the mesh member 27, and reaches the propeller 26.
[0029]
 As described above, in the beverage supply device according to the second embodiment, a part of the cooling water 17 that flows toward the bottom surface of the water tank 4 by the propeller 26 is fed from the rough winding portions 58 and 57 to the beverage cooling pipe 55. Since it flows inward and reaches the propeller 26 (arrow 63), the amount of the cooling water 17 that flows between the beverage cooling pipe 55 and the inner box 15 and near the water surface (arrow 64 → arrow 65) decreases.
 Thereby, even if the flow rate of the cooling water 17 to the bottom of the water tank 4 is increased by the rotation of the propeller 26, the flow rate of the cooling water 17 in the vicinity of the water surface part can be reduced. The horizontal state can be maintained, and the cooling water 17 can be prevented from decreasing by eliminating the splashing of the cooling water 17. Further, even if the flow rate of the cooling water 17 to the bottom of the water tank 4 is increased by the rotation of the propeller 26, the flow rate of the cooling water 17 in the vicinity of the water surface portion can be reduced. The vortex can be eliminated to prevent air entrainment noise. Further, since the flow rate of the cooling water 17 to the bottom of the water tank 4 can be increased by the rotation of the propeller 26, the cooling capacity can be improved, and the capacity of the water tank 4 can be reduced. Furthermore, since the cooling water 17 passes through the gaps between the coarsely wound portions 57 and 58 of the beverage cooling pipe 55, the heat exchange area of the beverage cooling pipe 55 can be increased, and the cooling capacity can be further improved. it can.
 Further, since ice 20 is formed in a gap larger than the space between the upper portion of the evaporation pipe 51 and the inner box 15 between the two turns at the lower end of the evaporation pipe 51 and the inner box 15, 4 can increase the amount of ice stored in the bottom. Thereby, even if the flow rate of the cooling water 17 near the bottom of the water tank 4 is increased and the portion of the broken line 20A near the lower end of the ice 20 is melted by the water flow of the cooling water 17, the lower end of the evaporation pipe 51 is melted. A sufficient cooling capacity can be maintained without melting the ice 20 between the two turns and the inner box 15. Moreover, since the flow rate of the cooling water 17 to the bottom of the water tank 4 can be increased by the rotation of the propeller 26, the cooling capacity can be improved, and the capacity of the water tank 4 can be reduced.
[0030]
 The present invention is not limited to the first and second embodiments, and various improvements and modifications can be made without departing from the scope of the present invention. For example, the following may be used.
 (A) In the said 1st Embodiment, although the plate member 30 of the resistance member 28 is substantially disc shape, you may make it the resistance member 40 which has the substantially hexagonal plate member 41, as shown in FIG. . Thereby, at the time of the assembly of the resistance member 40, the positioning with respect to the plate member 41 of each fixture 29 and 29 can be performed easily.
 FIG. 6 is a diagram illustrating a schematic configuration of a resistance member 40 attached between the agitation motor 13 and the propeller 26 of the beverage supply device 1 according to another embodiment, where (A) is a plan view and (B) is a side view. It is. 6, the same reference numerals as those of the configuration of the resistance member 28 in FIG. 4 indicate the same or corresponding parts as the configuration of the resistance member 28.
 (B) In the first embodiment, the number of plate members 30 of the resistance member 28 is one. However, as shown in FIG. 7, the resistance member 42 having two plate members 30 in the axial direction of the rotary shaft 25. For example, a resistance member having a plurality of plate members 30 in the axial direction of the rotary shaft 25 may be used. Thereby, generation | occurrence | production of the vortex around the rotating shaft 25 can be prevented more strongly.
 Drawing 7 is a figure showing the schematic structure of resistance member 42 attached between stirring motor 13 and propeller 26 of beverage supply device 1 concerning other embodiments, (A) is a top view and (B) is a side view. It is. In FIG. 7, the same reference numerals as those of the configuration of the resistance member 28 in FIG. 4 indicate the same or corresponding parts as the configuration of the resistance member 28.
[0031]
【The invention's effect】
 As described above, in the beverage supply apparatus according to claim 1, the cooling water cooled by the cooling means is accommodated in the water tank, and the beverage is cooled and supplied by this cooling water. In addition, the cooling water generates a flow of cooling water perpendicular to the bottom of the water tank by a stirring motor and a stirring blade attached to the rotating shaft of the stirring motor. And the resistance member which reduces the flow rate of this cooling water is provided in the upstream of the flow of cooling water perpendicular | vertical with respect to the said stirring blade.Furthermore, a net-like net member that covers the rotating shaft of the agitation motor and the agitation blade is provided.
 As a result, the flow rate of the vertical cooling water can be reduced by the resistance member, so that the water surface of the aquarium can be kept almost horizontal and the cooling water can be prevented from splashing to prevent the cooling water from decreasing. The drink supply apparatus which can be provided can be provided. Moreover, the drink supply apparatus which can eliminate the swirl which generate | occur | produces around the rotating shaft of a stirring motor with a resistance member, and can prevent the entrainment sound of air can be provided.Further, since the net member is disposed, the cooling meansInTherefore, even if the formed ice peels, it can be prevented from hitting the rotating shaft or the stirring blade.
[0032]
 Moreover, the drink supply apparatus which concerns on Claim 2 is a drink supply apparatus of Claim 1, The said resistance member has a substantially flat plate member, and the said plate member is an axial direction of the said rotating shaft. It is provided so as to be substantially perpendicular to the surface.
 Thereby, the flow of the vertical cooling water is decelerated by hitting the plate member, and it is possible to surely prevent the water splashing of the cooling water and to eliminate the vortex around the rotation axis to prevent the air entrainment sound. It is possible to provide a beverage supply device capable of Moreover, since a resistance member can be comprised with a substantially flat plate-shaped board member, it can be set as a simple structure and the drink supply apparatus which can aim at reduction of manufacturing cost can be provided.
[0033]
 The beverage supply device according to claim 3 is the beverage supply device according to claim 1 or 2, wherein the resistance member has a plurality of through holes.
 Thereby, since the flow rate of the cooling water can be easily adjusted by changing the size and number of the through holes, it is possible to reliably prevent the occurrence of water splashing and air entrainment noise with a simple configuration. A beverage supply device can be provided.
[0034]
 Furthermore, in the beverage supply apparatus according to claim 4, cooling water cooled by the cooling means is accommodated in the water tank. In addition, a beverage cooling pipe spirally wound in the depth direction is disposed in the water tank, and the beverage supplied to the beverage cooling pipe is cooled by the cooling water. In addition, a flow of cooling water perpendicular to the bottom in the water tank is generated by the stirring blades of the stirring means disposed inside the beverage cooling pipe. In addition, a portion of the beverage cooling pipe facing the upstream side in the vicinity of the stirring blade is provided with a rough winding portion in which a gap is formed in the depth direction, and a part of the cooling water flowing through the outer periphery of the beverage cooling pipe is Then, it flows into the inside of the beverage cooling pipe through this rough winding portion.
 As a result, the amount of cooling water reaching the water surface from the bottom of the aquarium can be reduced, and the flow rate of the cooling water near the water surface can be reduced, so that the water level of the aquarium can be kept almost horizontal. In addition, it is possible to provide a beverage supply device that can prevent the cooling water from splashing by eliminating splashing of the cooling water. Moreover, since the flow velocity of the flow of the cooling water in the vicinity of the water surface portion can be reduced, it is possible to provide a beverage supply device that can eliminate the vortex generated by the rotation of the stirring blade and prevent the entrainment sound of air. it can. Furthermore, since the cooling water passes through the gap between the coarsely wound portions of the beverage cooling pipe, it is possible to increase the heat exchange area of the beverage cooling pipe and to provide a beverage supply device capable of improving the cooling capacity. it can.
The cooling means includes an evaporation pipe that is spirally wound in the depth direction in the water tank and disposed outside the beverage cooling pipe, and a refrigerant is passed through the evaporation pipe to surround the evaporation pipe. The evaporation pipe is formed so that the winding diameter near the bottom of the water tank is smaller than the winding diameter of the other part. Thereby, the gap between the evaporation pipe near the bottom of the water tank and the inner wall of the water tank is made larger than the gap between the other part of the evaporation pipe and the inner wall of the water tank, thereby increasing the amount of ice stored near the bottom of the water tank. Can do. For this reason, even if the flow rate of the cooling water near the bottom of the water tank is increased, sufficient cooling capacity can be maintained without melting the ice near the bottom of the water tank by the water flow. Moreover, since the flow rate of the cooling water to the bottom of the water tank by the stirring means can be increased, the cooling capacity can be improved, and the water tank capacity can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic configuration of a beverage supply device according to a first embodiment.
FIG. 2 is a longitudinal side view showing a schematic configuration of a water tank of the beverage supply device according to the first embodiment.
FIG. 3 is an assembled perspective view illustrating a schematic configuration of a stirring unit that stirs cooling water in the water tank of the beverage supply device according to the first embodiment.
4A and 4B are diagrams showing a schematic configuration of a resistance member attached between the agitation motor and the propeller of the beverage supply device according to the first embodiment, wherein FIG. 4A is a plan view and FIG. 4B is a side view.
FIG. 5 is a longitudinal side view showing a schematic configuration of a water tank of a beverage supply device according to a second embodiment.
6A and 6B are diagrams showing a schematic configuration of a resistance member attached between a stirring motor and a propeller of a beverage supply device according to another embodiment, wherein FIG. 6A is a plan view and FIG. 6B is a side view.
7A and 7B are diagrams showing a schematic configuration of a resistance member attached between a stirring motor and a propeller of a beverage supply device according to another embodiment, wherein FIG. 7A is a plan view and FIG. 7B is a side view.
[Explanation of symbols]
 1 Beverage supply device
 4 Aquarium
 3 Front side cross rail
 12, 55 Beverage cooling pipe
 13 Stirring motor
 15 Inner box
 16 Insulation wall
 17 Cooling water
 18, 51 Evaporation tube
 20 ice
 20A broken line
 25 Rotating shaft
 26 Propeller
 27 Net members
 28, 40, 42 Resistance member
 29 Fitting
 30, 41 Plate member
 57, 58 Coarse winding
 60-65, AC arrow

Claims

A beverage comprising a water tank for storing cooling water cooled by the cooling means, and a stirring means for generating a flow of cooling water perpendicular to the bottom of the water tank, and cooling the beverage with this cooling water and supplying the beverage In the supply device,
The stirring means includes a stirring motor,
A stirring blade attached to the rotating shaft of the stirring motor and generating a flow of cooling water;
A net-like net member covering the rotating shaft of the stirring motor and the stirring blade;
A resistance member provided on the upstream side of the flow of the cooling water in the vertical direction with respect to the stirring blade, and reducing the flow rate of the cooling water;
A beverage supply device comprising:

The resistance member has a substantially flat plate member,
The beverage supply apparatus according to claim 1, wherein the plate member is provided so as to be substantially perpendicular to the axial direction of the rotation shaft.

The beverage supply device according to claim 1, wherein the resistance member has a plurality of through holes.

A water tank that contains cooling water cooled by the cooling means, a beverage cooling pipe that cools the beverage that is spirally wound and disposed in the depth direction in the water tank, and the inside of the beverage cooling pipe A beverage supply device that is disposed in the water tank and generates a flow of cooling water perpendicular to the bottom of the water tank, and cools and supplies the beverage with the cooling water,
The stirring means has a stirring blade for generating a flow of cooling water,
The cooling means is spirally wound in the depth direction in the water tank and disposed outside the beverage cooling pipe, and the winding diameter near the bottom of the water tank is smaller than the winding diameter of the other part. An evaporating tube, and a refrigeration device that forms ice around the evaporating tube by flowing a refrigerant through the evaporating tube,
The beverage cooling pipe has a rough winding portion wound so as to form a gap in the depth direction at a portion facing the upstream side in the vicinity of the stirring blade,
A beverage supply apparatus, wherein a part of cooling water flowing through an outer peripheral portion of the beverage cooling pipe flows into the beverage cooling pipe through the coarse winding portion.