JP3588155B2 - Engine driven refrigeration system - Google Patents

Engine driven refrigeration system Download PDF

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Publication number
JP3588155B2
JP3588155B2 JP06503095A JP6503095A JP3588155B2 JP 3588155 B2 JP3588155 B2 JP 3588155B2 JP 06503095 A JP06503095 A JP 06503095A JP 6503095 A JP6503095 A JP 6503095A JP 3588155 B2 JP3588155 B2 JP 3588155B2
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refrigerant
cold
water
heat exchanger
hot water
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JPH08233405A (en
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大成 野口
能久 木村
二三雄 丸山
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

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Description

【０００１】
【産業上の利用分野】
本発明はエンジン駆動式の冷凍装置に関するものであり、特に詳しくは冷媒／水熱交換器を備えて、室外熱交換器で放熱または吸熱して冷媒回路を流れている冷媒と水とを熱交換して、利用側熱交換器に所定の温度の冷温水を循環供給し、利用側熱交換器で冷却または加熱操作を行うタイプの冷凍装置に関する。
【０００２】
【従来の技術】
例えば、二重管式に形成した冷媒／水熱交換器の外側の冷温水配管を冷温水回路に接続すると共に、冷温水配管に挿通した冷媒配管を冷媒回路に接続し、ガスや油などを燃料とするエンジンによって駆動する圧縮機から吐出され、室外熱交換器で放熱または吸熱して冷媒配管を流れている冷媒と、冷温水配管を流れている水とが熱交換し、所望の温度に調節された水を利用側熱交換器として室内に設けた室内熱交換器に循環供給し、この室内熱交換器で冷房または暖房を行う、いわゆるチラー式エンジン駆動エアコンが、▲１▼冷媒（フロンなど）の使用量の減少が図れる、▲２▼漏洩時の悪影響が少ないので配管の引き回しが容易である、などと云った理由から広く使用されるようになってきている。
【０００３】
【発明が解決しようとする課題】
しかし、従来のチラー式エンジン駆動エアコンは、コンパクト化を図る目的で、例えば図４に例示したように二重管式の冷媒／水熱交換器１をエンジン６２・圧縮機６３・室外熱交換器６４などと共に室外ユニット６０に収納した構成であり、冷媒／水熱交換器１を備えない従来機種との共通性がなく、したがって部品および製品の在庫管理・輸送性・製造コストなどの点で問題となっていた。また、冷温水の流入／流出口がユニットにより決定されてしまうため、施工性に難点があると云った問題点もあり、これら問題点の解決が課題となっていた。
【０００４】
【課題を解決するための手段】
本発明は上記従来技術の課題を解決するため、利用側熱交換器に循環供給する冷温水と室外熱交換器で放熱または吸熱してエンジン駆動式の圧縮機を有した冷媒回路を流れている冷媒とが熱交換し、利用側熱交換器に冷熱または温熱を供給する冷媒／水熱交換器を備えたエンジン駆動式冷凍装置において、
【０００５】
複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、圧縮機から供給された冷媒を複数の冷媒／水熱交換器に分配する冷媒分配手段と、複数の冷媒／水熱交換器から吐出した冷媒同士を合流する冷媒合流手段とを収納する冷媒／水熱交換器ユニットを、エンジン・圧縮機・室外熱交換器などを収納する室外ユニットとは別体として備えるようにしたものであり、
【０００６】
さらに、複数の冷媒／水熱交換器それぞれを二重管式コイルに形成して上下方向に配置したものであり、
【０００７】
さらに、冷媒／水熱交換器ユニットの冷媒／水熱交換器を支持するユニットベースの上面に凹みを設け、ユニットベースにドレンパン機能を持たせたものであり、
【０００８】
さらに、複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、冷温水分配手段の入口に接続する冷温水入口側配管と、冷温水合流手段の出口に接続する冷温水出口側配管とを設け、冷温水入口側配管と冷温水出口側配管とを、冷媒／水熱交換器の下方に配置したものであり、
【０００９】
さらに、冷温水入口側配管と冷温水出口側配管とを略平行に設置すると共に、冷温水入口側配管・冷温水出口側配管それぞれの両端を開口可能に形成し、何れの端部からでも冷温水の流入／流出を可能にしたものである。
【００１０】
【作用】
複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、圧縮機から供給された冷媒を複数の冷媒／水熱交換器に分配する冷媒分配手段と、複数の冷媒／水熱交換器から吐出した冷媒同士を合流する冷媒合流手段とを収納する冷媒／水熱交換器ユニットを、エンジン・圧縮機・室外熱交換器などを収納する室外ユニットとは別体として構成したので、冷媒／水熱交換器などを備えない従来の室外ユニットと殆どの部品を共通化して室外ユニットを製造することができ、コストダウンが図れる。
【００１１】
また、複数の冷媒／水熱交換器それぞれを二重管式コイルに形成して上下方向に配置した請求項２の発明においては、所要床面積を小さくすることが可能であり、請求項３の発明においてはドレンパンを別途用意することがないので、装置の小型化と組み立て加工が容易になり、請求項４の発明においては所要床面積をさらに小さくすることが可能であり、請求項５の発明においては冷媒／水熱交換器ユニットの何れの側からも冷温水回路を接続することができるので、施工性が改善される。
【００１２】
【実施例】
以下、本発明の一実施例を図１〜図３に基づいて説明する。これらの図において前記図４の符号と同一符号で示した部分は、図４によって説明したものと同様の機能を持つ部分であり、本発明の理解を妨げない範囲で説明は省略した。
【００１３】
内側の通路に例えば冷媒が流れ、外側の通路に冷温水が流れるように構成した二重管式の冷媒／水熱交換器３を収納した冷媒／水熱交換器ユニット３０と、エンジン６２・圧縮機６３・室外熱交換器６４などを収納した室外ユニット６０とを別体として構成すると共に、室外ユニット６０から冷媒回路６１に流れ出て室外ユニット６０に還流する冷媒と、室内熱交換器４０で冷却または加熱操作したのち冷温水回路４１に流れ出て室内熱交換器４０に還流する冷温水とが、冷媒／水熱交換器３で熱交換可能に配管接続してある。
【００１４】
なお、図１は室外ユニット６０の圧縮機６３が吐出した高温高圧の冷媒を、室外熱交換器６４に送って放熱凝縮させた後、冷媒回路６１の冷媒配管６１ａを介して冷媒／水熱交換器ユニット３０の冷媒／水熱交換器３に循環供給し、室内熱交換器４０に冷熱を供給する冷房運転などの冷却運転時の配管接続例である。
【００１５】
室外ユニット６０は図示しない四方弁などの流路切換手段を備えており、冷媒／水熱交換器３で冷温水と熱交換して凝縮した冷媒を冷媒配管６１ａを介して室外ユニット６０に戻し、室外熱交換器６４で相対的に温度の高い大気から熱を奪って蒸発した冷媒を圧縮機６３で圧縮し、高温高圧の冷媒を冷媒配管６１ｂから冷媒／水熱交換器３に循環供給して暖房運転などの加熱運転を行うことも可能である。
【００１６】
この実施例の冷媒／水熱交換器３は、図１に示したように冷媒／水熱交換器ユニット３０の１階Ｆ１と２階Ｆ２とに分散して設置してあり、１階に設置した冷媒／水熱交換器１の冷温水配管１Ａと２階に設置した冷媒／水熱交換器２の冷温水配管２Ａとは、冷温水回路４１に並列に接続してあり、冷媒／水熱交換器１の冷媒配管１Ｂと冷媒／水熱交換器２の冷媒配管２Ｂも冷媒回路６１に並列に接続してあり、冷温水配管１Ａ・２Ａの冷温水と冷媒配管１Ｂ・２Ｂの冷媒とは、図示したように冷却運転時に対向流で流れて熱交換する。
【００１７】
冷媒／水熱交換器３は、具体的には例えば図２に示したように、１階Ｆ１に設置した冷媒／水熱交換器１はコイル状に形成した３個の冷媒／水熱交換器１ａ・１ｂ・１ｃを積み重ねた構成であり、２階Ｆ２の冷媒／水熱交換器２も同様に３個の冷媒／水熱交換器２ａ・２ｂ・２ｃを積み重ねた構成であって、ユニットベース４の上に横置きした冷温水入口側配管５の途中から延設した第１の冷温水分配管６を介して、１階Ｆ１の冷媒／水熱交換器１ａ・１ｂ・１ｃそれぞれの図示しない冷温水通路に冷温水入口１ａ１・１ｂ１・１ｃ１より、また、同様に設けた第２の冷温水分配管７を介して、２階Ｆ２の冷媒／水熱交換器２ａ・２ｂ・２ｃそれぞれの図示しない冷温水通路に冷温水入口２ａ１・２ｂ１・２ｃ１より、冷温水がそれぞれ流入するように接続してある。
【００１８】
なお、ユニットベース４は、ドレンパンの機能を有するように上部を凹めて形成してあり、冷媒／水熱交換器３から滴下する水を溜めて、自然蒸発または強制蒸発させることができるようになっている。
【００１９】
そして、１階Ｆ１の冷媒／水熱交換器１ａ・１ｂ・１ｃそれぞれの図示しない冷温水通路を流れた冷温水が冷温水出口１ａ２・１ｂ２・１ｃ２より第１の冷温水合流配管８に、また、２階Ｆ２の冷媒／水熱交換器２ａ・２ｂ・２ｃそれぞれの図示しない冷温水通路に流れた冷温水が冷温水出口２ａ２・２ｂ２・２ｃ２より第２の冷温水合流配管９に、それぞれ流入するように配管し、さらに冷温水集合配管１０を介して、冷温水入口側配管５に平行に、ユニットベース４の上に横置きした冷温水出口側配管１１に流入可能に接続してある。
【００２０】
なお、２５は、冷媒／水熱交換器１の下方に冷温水入口側配管５および冷温水出口側配管１１を設置する空間を形成するため、１階Ｆ１部分を押し上げて固定している固定金具である。
【００２１】
そして、冷温水入口側配管５および冷温水出口側配管１１は、何れも両端を開口可能に形成してあるので、何れの端部にも所要の冷温水回路４１を接続することができる。
【００２２】
また、冷媒／水熱交換器ユニット３０の第１の冷媒出入口配管１５が、三方弁１６を介して１階用の第１のヘッダー１７と２階用の第２のヘッダー１８とに連通し、第１のヘッダー１７を介して１階Ｆ１の冷媒／水熱交換器１ａ・１ｂ・１ｃそれぞれの図示しない各冷媒通路に、第１の冷媒出入口１ａ３・１ｂ３・１ｃ３で連通し、第２のヘッダー１８を介して２階Ｆ２の冷媒／水熱交換器２ａ・２ｂ・２ｃそれぞれの図示しない各冷媒通路に、第１の冷媒出入口２ａ３・２ｂ３・２ｃ３で連通している。
【００２３】
そして、１階Ｆ１の冷媒／水熱交換器１ａ・１ｂ・１ｃそれぞれの図示しない各冷媒通路が第２の冷媒出入口１ａ４・１ｂ４・１ｃ４で１階の冷媒配管１９に連通し、２階Ｆ２の冷媒／水熱交換器２ａ・２ｂ・２ｃそれぞれの図示しない各冷媒通路が第２の冷媒出入口２ａ４・２ｂ４・２ｃ４で２階の冷媒配管２０に連通し、さらに第２の冷媒出入口配管２１に連通するように配管接続してある。
【００２４】
そして、冷温水入口側配管５の何れか一方の端部を冷温水回路４１の冷温水配管４１ａに接続し、冷温水出口側配管１１の何れか一方の端部を冷温水回路４１の冷温水配管４１ｂに接続し、第１の冷媒出入口配管１５を冷媒回路６１の冷媒配管６１ａに接続し、第２の冷媒出入口配管２１を冷媒回路６１の冷媒配管６１ｂに接続して冷凍装置を構成するので、冷媒と冷温水は図１に示したように冷媒／水熱交換器３を冷却運転時には対向流で流れて熱交換し、冷媒の流れる向きを図示しない四方弁などで逆向きにした加熱運転時には、冷媒と冷温水は冷媒／水熱交換器３を同じ方向に流れて熱交換する。
【００２５】
なお、本発明は上記実施例に限定されるものではないので、特許請求の範囲に記載の趣旨から逸脱しない範囲で各種の変形実施が可能である。
【００２６】
【発明の効果】
以上説明したように本発明によれば、複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、圧縮機から供給された冷媒を複数の冷媒／水熱交換器に分配する冷媒分配手段と、複数の冷媒／水熱交換器から吐出した冷媒同士を合流する冷媒合流手段とを収納する冷媒／水熱交換器ユニットが、エンジン・圧縮機・室外熱交換器などを収納する室外ユニットと別体であるので、冷媒／水熱交換器などを備えない従来の室外ユニットと殆どの部品を共通化して室外ユニットを製造することができ、コストダウンが図れる。
【００２７】
また、請求項２の発明においては、複数の冷媒／水熱交換器それぞれを二重管式コイルに形成して上下方向に配置したので、所要床面積を小さくすることが可能であり、請求項３の発明においてはドレンパンを別途用意することがないので、装置の小型化と組み立て加工が容易になり、請求項４の発明においては所要床面積を小さくすることが可能であり、請求項５の発明においては冷媒／水熱交換器ユニットの何れの側からも冷温水回路を接続することができるので、施工性が改善される。
【図面の簡単な説明】
【図１】一実施例の構成を示す説明図である。
【図２】冷媒／水熱交換器ユニットの構成を示す説明図であり、（イ）は平面図、（ロ）は正面図、（ハ）は左側面図、（ニ）は右側面図である。
【図３】冷媒／水熱交換器ユニットと室外ユニットの接続を示す説明図である。
【図４】従来技術を示す説明図である。
【符号の説明】
１・１ａ・１ｂ・１ｃ・２・２ａ・２ｂ・２ｃ・３ 冷媒／水熱交換器
１Ａ・２Ａ 冷温水配管
１Ｂ・２Ｂ 冷媒配管
１ａ１・１ｂ１・１ｃ１・２ａ１・２ｂ１・２ｃ１ 冷温水入口
１ａ２・１ｂ２・１ｃ２・２ａ２・２ｂ２・２ｃ２ 冷温水出口
１ａ３・１ｂ３・１ｃ３・２ａ３・２ｂ３・２ｃ３ 第１の冷媒出入口
１ａ４・１ｂ４・１ｃ４・２ａ４・２ｂ４・２ｃ４ 第２の冷媒出入口
４ ユニットベース
５ 冷温水入口側配管
６ 第１の冷温水分配管
７ 第２の冷温水分配管
８ 第１の冷温水合流配管
９ 第２の冷温水合流配管
１０ 冷温水集合配管
１１ 冷温水出口側配管
１５ 第１の冷媒出入口配管
１６ 三方弁
１７ 第１のヘッダー
１８ 第２のヘッダー
１９ 冷媒配管
２０ 冷媒配管
２１ 第２の冷媒出入口配管
２５ 固定金具
３０ 冷媒／水熱交換器ユニット
４０ 室内熱交換器
４１ 冷温水回路
４１ａ・４１ｂ 冷温水配管
６０ 室外ユニット
６１ 冷媒回路
６１ａ・６１ｂ 冷媒配管
６２ エンジン
６３ 圧縮機
６４ 室外熱交換器
Ｆ１ １階
Ｆ２ ２階[0001]
[Industrial applications]
The present invention relates to an engine-driven refrigerating apparatus, and more particularly, to a refrigerant / water heat exchanger, which exchanges heat with water flowing through a refrigerant circuit by radiating or absorbing heat in an outdoor heat exchanger. Further, the present invention relates to a refrigeration apparatus of a type in which cold / hot water of a predetermined temperature is circulated and supplied to a use side heat exchanger to perform a cooling or heating operation in the use side heat exchanger.
[0002]
[Prior art]
For example, the cold / hot water pipe outside the double-pipe refrigerant / water heat exchanger is connected to the cold / hot water circuit, and the coolant pipe inserted through the cold / hot water pipe is connected to the refrigerant circuit to remove gas, oil, etc. The refrigerant that is discharged from the compressor driven by the engine as the fuel and radiates or absorbs heat in the outdoor heat exchanger and flows through the refrigerant pipe, and the water flowing through the cold / hot water pipe exchanges heat to reach a desired temperature. The so-called chiller-type engine-driven air conditioner that circulates and supplies the regulated water to an indoor heat exchanger provided indoors as a use-side heat exchanger and performs cooling or heating with the indoor heat exchanger includes: Etc.), and (2) the piping is easy to route because there is little adverse effect at the time of leakage.
[0003]
[Problems to be solved by the invention]
However, the conventional chiller-type engine-driven air conditioner has a double-tube type refrigerant / water heat exchanger 1 as shown in FIG. 4 for the purpose of downsizing, for example, an engine 62, a compressor 63, and an outdoor heat exchanger. 64 and the like are housed in the outdoor unit 60 and have no commonality with the conventional model that does not include the refrigerant / water heat exchanger 1. Therefore, there is a problem in terms of inventory management, transportability, manufacturing costs, etc. of parts and products. Had become. In addition, since inflow / outflow of cold / hot water is determined by the unit, there is a problem that there is a problem in workability, and there has been a problem to solve these problems.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems of the prior art, the present invention circulates through a refrigerant circuit having an engine-driven compressor that radiates or absorbs heat with cold / hot water circulating to a use side heat exchanger and an outdoor heat exchanger. In an engine-driven refrigeration apparatus having a refrigerant / water heat exchanger that exchanges heat with a refrigerant and supplies cold or warm heat to a use-side heat exchanger,
[0005]
A plurality of refrigerant / water heat exchangers, cold / hot water distribution means for distributing cold / hot water returned from the use side heat exchanger to the plurality of refrigerant / water heat exchangers, and a cold / hot water discharged from the plurality of refrigerant / water heat exchangers Cooling / hot water merging means for merging water, refrigerant distribution means for distributing refrigerant supplied from a compressor to a plurality of refrigerant / water heat exchangers, and merging refrigerants discharged from a plurality of refrigerant / water heat exchangers A refrigerant / water heat exchanger unit accommodating the refrigerant merging means to be provided separately from an outdoor unit accommodating an engine, a compressor, an outdoor heat exchanger, and the like,
[0006]
Moreover, which is arranged in a vertical direction to form a plurality of refrigerant / water heat exchanger double-pipe coil,
[0007]
Furthermore, a recess is provided on the upper surface of the unit base supporting the refrigerant / water heat exchanger of the refrigerant / water heat exchanger unit, and the unit base has a drain pan function,
[0008]
Further, a plurality of refrigerant / water heat exchangers, cold / hot water distribution means for distributing cold / hot water returned from the use-side heat exchanger to the plurality of refrigerant / water heat exchangers, and discharge from the plurality of refrigerant / water heat exchangers was a hot and cold water converging means for converging the cold and hot water together, provided with hot and cold water inlet side pipe connected to the inlet of cold and hot water distribution means, and a cold water outlet pipe connected to the outlet of the hot and cold water converging means, hot and cold water inlet Side pipe and the cold / hot water outlet side pipe are arranged below the refrigerant / water heat exchanger,
[0009]
Furthermore, the cold / hot water inlet pipe and the cold / hot water outlet pipe are installed substantially in parallel, and both ends of the cold / hot water inlet pipe / cold / hot water outlet pipe are formed so as to be open at both ends. This allows the inflow / outflow of water.
[0010]
[Action]
A plurality of refrigerant / water heat exchangers, cold / hot water distribution means for distributing cold / hot water returned from the use side heat exchanger to the plurality of refrigerant / water heat exchangers, and a cold / hot water discharged from the plurality of refrigerant / water heat exchangers Cooling / hot water merging means for merging water, refrigerant distribution means for distributing refrigerant supplied from a compressor to a plurality of refrigerant / water heat exchangers, and merging refrigerants discharged from a plurality of refrigerant / water heat exchangers the refrigerant / water heat exchanger unit for storing the refrigerant merging means for, since the outdoor unit for housing and engine compressor, an outdoor heat exchanger configured as separate bodies, and the like refrigerant / water heat exchanger Most of the parts can be manufactured in common with the conventional outdoor unit, which is not used, so that the cost can be reduced.
[0011]
Further, in the invention of claim 2 in which each of the plurality of refrigerant / water heat exchangers is formed in a double tube coil and arranged vertically, it is possible to reduce the required floor area. In the present invention, since a drain pan is not separately prepared, the apparatus can be easily miniaturized and assembled, and the required floor area can be further reduced in the invention of the fourth aspect, and the invention of the fifth aspect In, the cold / hot water circuit can be connected from either side of the refrigerant / water heat exchanger unit, so that the workability is improved.
[0012]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. In these figures, the portions indicated by the same reference numerals as those in FIG. 4 are portions having the same functions as those described with reference to FIG. 4, and the description is omitted to the extent that the understanding of the present invention is not hindered.
[0013]
A refrigerant / water heat exchanger unit 30 containing a double-pipe type refrigerant / water heat exchanger 3 configured to allow, for example, a refrigerant to flow through an inner passage and a cold / hot water to flow to an outer passage; The unit 63 and the outdoor unit 60 containing the outdoor heat exchanger 64 and the like are configured separately, and the refrigerant flowing out of the outdoor unit 60 to the refrigerant circuit 61 and returning to the outdoor unit 60 is cooled by the indoor heat exchanger 40. Alternatively, cold / hot water flowing out of the cold / hot water circuit 41 after the heating operation and flowing back to the indoor heat exchanger 40 is connected to the refrigerant / water heat exchanger 3 so as to be able to exchange heat.
[0014]
Note that FIG. 1 shows that the high-temperature and high-pressure refrigerant discharged from the compressor 63 of the outdoor unit 60 is sent to the outdoor heat exchanger 64 to be radiated and condensed, and then subjected to refrigerant / water heat exchange via the refrigerant pipe 61 a of the refrigerant circuit 61. This is a pipe connection example during a cooling operation such as a cooling operation in which the refrigerant is supplied to the refrigerant / water heat exchanger 3 of the heat exchanger unit 30 and the indoor heat exchanger 40 is cooled.
[0015]
The outdoor unit 60 includes a flow path switching unit such as a four-way valve (not shown), and the refrigerant condensed by exchanging heat with the cold / hot water in the refrigerant / water heat exchanger 3 is returned to the outdoor unit 60 through the refrigerant pipe 61a. The outdoor heat exchanger 64 takes away heat from the relatively high temperature atmosphere and compresses the evaporated refrigerant by the compressor 63, and circulates and supplies the high-temperature and high-pressure refrigerant from the refrigerant pipe 61b to the refrigerant / water heat exchanger 3. It is also possible to perform a heating operation such as a heating operation.
[0016]
The refrigerant / water heat exchanger 3 of this embodiment is distributed and installed on the first floor F1 and the second floor F2 of the refrigerant / water heat exchanger unit 30 as shown in FIG. The cold / hot water pipe 1A of the refrigerant / water heat exchanger 1 and the cold / hot water pipe 2A of the refrigerant / water heat exchanger 2 installed on the second floor are connected in parallel to the cold / hot water circuit 41, and the refrigerant / water heat The refrigerant pipe 1B of the exchanger 1 and the refrigerant pipe 2B of the refrigerant / water heat exchanger 2 are also connected in parallel to the refrigerant circuit 61, and the cold and hot water of the cold and hot water pipes 1A and 2A and the refrigerant of the refrigerant pipes 1B and 2B As shown in the drawing, heat exchange occurs by flowing in a counter flow during the cooling operation.
[0017]
The refrigerant / water heat exchanger 3 is, specifically, as shown in FIG. 2, for example, the refrigerant / water heat exchanger 1 installed on the first floor F1 has three coil / water heat exchangers formed in a coil shape. The refrigerant / water heat exchanger 2 on the second floor F2 also has a structure in which three refrigerant / water heat exchangers 2a, 2b, and 2c are stacked, and the unit base is The cold / hot heat exchangers 1a, 1b, 1c (not shown) of the first floor F1 via a first cold / hot moisture pipe 6 extending from the middle of the cold / hot water inlet side pipe 5 placed horizontally on the upper side 4 The cold / hot temperatures (not shown) of the refrigerant / water heat exchangers 2a, 2b, and 2c on the second floor F2 through the cold / hot water inlets 1a1, 1b1, and 1c1 in the water passage, and through the second cold / hot moisture pipe 7 similarly provided. Cold and hot water flows into the water passage from the cold and hot water inlets 2a1, 2b1, and 2c1, respectively. It is connected to so that.
[0018]
The unit base 4 is formed with a recessed upper portion so as to have a function of a drain pan, so that water dropped from the refrigerant / water heat exchanger 3 can be collected and spontaneously evaporated or forcedly evaporated. Has become.
[0019]
Then, the cold / hot water flowing through the not-shown cold / hot water passages of the refrigerant / water heat exchangers 1a, 1b, 1c on the first floor F1 is supplied from the cold / hot water outlets 1a2, 1b2, 1c2 to the first cold / hot water joining pipe 8, and The cold / hot water flowing into the cold / hot water passages (not shown) of the refrigerant / water heat exchangers 2a, 2b, 2c on the second floor F2 flows into the second cold / hot water joining pipe 9 from the cold / hot water outlets 2a2.2b2, 2c2, respectively. It is connected via a cold / hot water collecting pipe 10 to a cold / hot water outlet pipe 11 placed on the unit base 4 in parallel with the cold / hot water inlet pipe 5.
[0020]
25 is a fixture for pushing up and fixing the F1 portion on the first floor to form a space for installing the cold / hot water inlet pipe 5 and the cold / hot water outlet pipe 11 below the refrigerant / water heat exchanger 1. It is.
[0021]
Since the cold / hot water inlet pipe 5 and the cold / hot water outlet pipe 11 are both formed so that both ends can be opened, a required cold / hot water circuit 41 can be connected to either end.
[0022]
In addition, the first refrigerant inlet / outlet pipe 15 of the refrigerant / water heat exchanger unit 30 communicates with the first header 17 for the first floor and the second header 18 for the second floor via the three-way valve 16, The first header 17 communicates with the respective refrigerant passages (not shown) of the refrigerant / water heat exchangers 1a, 1b, and 1c on the first floor F1 at first refrigerant ports 1a3, 1b3, and 1c3, and the second header The refrigerant / water heat exchangers 2a, 2b, 2c on the second floor F2 communicate with the respective refrigerant passages (not shown) of the second floor F2 via first refrigerant inlets / outlets 2a3, 2b3, 2c3.
[0023]
The respective refrigerant passages (not shown) of the refrigerant / water heat exchangers 1a, 1b, and 1c on the first floor F1 communicate with the refrigerant pipes 19 on the first floor at the second refrigerant ports 1a4, 1b4, and 1c4, respectively. The respective refrigerant passages (not shown) of the refrigerant / water heat exchangers 2a, 2b, 2c communicate with the refrigerant pipes 20 on the second floor at the second refrigerant ports 2a4, 2b4, 2c4, and further communicate with the second refrigerant port pipes 21. It is connected by piping.
[0024]
Then, one end of the cold / hot water inlet side pipe 5 is connected to the cold / hot water pipe 41 a of the cold / hot water circuit 41, and one end of the cold / hot water outlet pipe 11 is connected to the cold / hot water The refrigeration system is constructed by connecting the first refrigerant inlet / outlet pipe 15 to the refrigerant pipe 61a of the refrigerant circuit 61 and connecting the second refrigerant inlet / outlet pipe 21 to the refrigerant pipe 61b of the refrigerant circuit 61 by connecting the pipe 41b to the pipe 41b. As shown in FIG. 1, the refrigerant and the hot / cold water flow in the refrigerant / water heat exchanger 3 in the cooling operation in a counter flow to exchange heat, and the refrigerant flows in opposite directions by a four-way valve or the like (not shown). At times, the refrigerant and the cold / hot water flow through the refrigerant / water heat exchanger 3 in the same direction to exchange heat.
[0025]
It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the appended claims.
[0026]
【The invention's effect】
As described above, according to the present invention, a plurality of refrigerant / water heat exchangers, cold / hot water distribution means for distributing cold / hot water returned from the use side heat exchanger to the plurality of refrigerant / water heat exchangers, A cold / hot water merging means for merging cold / hot water discharged from the refrigerant / water heat exchanger, a refrigerant distribution means for distributing the refrigerant supplied from the compressor to a plurality of refrigerant / water heat exchangers, Since the refrigerant / water heat exchanger unit accommodating the refrigerant merging means for merging the refrigerants discharged from the water heat exchanger is separate from the outdoor unit accommodating the engine, the compressor, the outdoor heat exchanger, and the like, Most of the components can be shared with the conventional outdoor unit having no refrigerant / water heat exchanger or the like to manufacture the outdoor unit, and the cost can be reduced.
[0027]
According to the second aspect of the present invention, each of the plurality of refrigerant / water heat exchangers is formed in a double tube coil and arranged vertically, so that the required floor area can be reduced. In the invention of the third aspect, since a drain pan is not separately prepared, miniaturization and assembling of the apparatus are facilitated, and the required floor area can be reduced in the invention of the fourth aspect. In the invention, since the cold / hot water circuit can be connected from any side of the refrigerant / water heat exchanger unit, the workability is improved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a configuration of one embodiment.
FIGS. 2A and 2B are explanatory views showing the configuration of a refrigerant / water heat exchanger unit, wherein FIG. 2A is a plan view, FIG. 2B is a front view, FIG. 2C is a left side view, and FIG. is there.
FIG. 3 is an explanatory view showing a connection between a refrigerant / water heat exchanger unit and an outdoor unit.
FIG. 4 is an explanatory diagram showing a conventional technique.
[Explanation of symbols]
1.1a, 1b, 1c, 2.2, 2b, 2c, 3 Refrigerant / water heat exchanger 1A, 2A Cold and hot water pipe 1B, 2B Refrigerant pipe 1a1, 1b1, 1c1, 2a1, 2b1, 2c1 Cold and hot water inlet 1a2 1b2 1c2 2a2 2b2 2c2 Cold and hot water outlet 1a3, 1b3, 1c3, 2a3, 2b3, 2c3 First coolant inlet and outlet 1a4, 1b4, 1c4, 2a4, 2b4, 2c4 Second coolant inlet and outlet 4 Unit base 5 Cold and hot water Inlet pipe 6 First cold / hot moisture pipe 7 Second cold / hot moisture pipe 8 First cold / hot water merging pipe 9 Second cold / hot water merging pipe 10 Cold / hot water collecting pipe 11 Cold / hot water outlet pipe 15 First refrigerant inlet / outlet Pipe 16 Three-way valve 17 First header 18 Second header 19 Refrigerant pipe 20 Refrigerant pipe 21 Second refrigerant inlet / outlet pipe 25 Fixture 30 Refrigerant / water heat exchanger unit 0 indoor heat exchanger 41 hot and cold water circuits 41a · 41b hot and cold water pipe 60 outdoor unit 61 refrigerant circuit 61a · 61b refrigerant pipe 62 engine 63 compressor 64 outdoor heat exchanger F1 1 floor F2 2 floor

Claims (5)

利用側熱交換器に循環供給する冷温水と室外熱交換器で放熱または吸熱してエンジン駆動式の圧縮機を有した冷媒回路を流れている冷媒とが熱交換し、利用側熱交換器に冷熱または温熱を供給する冷媒／水熱交換器を備えたエンジン駆動式冷凍装置において、複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、圧縮機から供給された冷媒を複数の冷媒／水熱交換器に分配する冷媒分配手段と、複数の冷媒／水熱交換器から吐出した冷媒同士を合流する冷媒合流手段とを収納する冷媒／水熱交換器ユニットを、エンジン・圧縮機・室外熱交換器などを収納する室外ユニットとは別体として備えたことを特徴とするエンジン駆動式冷凍装置。The cold / hot water circulating to the use-side heat exchanger and the refrigerant flowing through the refrigerant circuit having the engine-driven compressor by radiating or absorbing heat in the outdoor heat exchanger exchange heat with the use-side heat exchanger. In an engine-driven refrigerating apparatus provided with a refrigerant / water heat exchanger for supplying cold or hot heat, a plurality of refrigerant / water heat exchangers and a plurality of refrigerant / water heat exchanges between the cold / hot water returned from the use side heat exchanger are provided. Means for distributing cold and hot water to the heat exchanger, means for merging cold and hot water discharged from the plurality of refrigerant / water heat exchangers, and means for transferring the refrigerant supplied from the compressor to the plurality of refrigerant / water heat exchangers A refrigerant / water heat exchanger unit containing a refrigerant distribution means for distributing and a refrigerant merging means for merging refrigerants discharged from a plurality of refrigerant / water heat exchangers ; an engine / compressor / outdoor heat exchanger; Provided separately from the outdoor unit to be stored Engine-driven refrigeration system, characterized in that. 複数の冷媒／水熱交換器それぞれを二重管式コイルに形成して上下方向に配置したことを特徴とする請求項１記載のエンジン駆動式冷凍装置。The engine-driven refrigeration system according to claim 1, wherein each of the plurality of refrigerant / water heat exchangers is formed in a double tube coil and arranged vertically. 冷媒／水熱交換器ユニットの冷媒／水熱交換器を支持するユニットベースの上面に凹みを設け、ユニットベースにドレンパン機能を持たせたことを特徴とする請求項１または２記載のエンジン駆動式冷凍装置。The engine-driven type according to claim 1 or 2, wherein a recess is provided on an upper surface of a unit base supporting the refrigerant / water heat exchanger of the refrigerant / water heat exchanger unit, and the unit base has a drain pan function. Refrigeration equipment. 利用側熱交換器に循環供給する冷温水と室外熱交換器で放熱または吸熱してエンジン駆動式の圧縮機を有した冷媒回路を流れている冷媒とが熱交換し、利用側熱交換器に冷熱または温熱を供給する冷媒／水熱交換器を備えたエンジン駆動式冷凍装置において、複数の冷媒／水熱交換器と、利用側熱交換器から還流した冷温水を複数の冷媒／水熱交換器に分配する冷温水分配手段と、複数の冷媒／水熱交換器から吐出した冷温水同士を合流する冷温水合流手段と、冷温水分配手段の入口に接続する冷温水入口側配管と、冷温水合流手段の出口に接続する冷温水出口側配管とを設け、冷温水入口側配管と冷温水出口側配管とを、冷媒／水熱交換器の下方に配置したことを特徴とするエンジン駆動式冷凍装置。The cold / hot water circulating to the use-side heat exchanger and the refrigerant flowing through the refrigerant circuit having the engine-driven compressor by radiating or absorbing heat in the outdoor heat exchanger exchange heat with the use-side heat exchanger. In an engine-driven refrigerating apparatus provided with a refrigerant / water heat exchanger for supplying cold or hot heat, a plurality of refrigerant / water heat exchangers and a plurality of refrigerant / water heat exchanges between the cold / hot water returned from the use side heat exchanger are provided. a cold water distribution means for distributing the vessel, the hot and cold water converging means for converging the cold and hot water together discharged from a plurality of refrigerant / water heat exchanger, a cold water inlet pipe to be connected to the inlet of cold and hot water distribution means, cold An engine-driven type in which a cold / hot water outlet pipe connected to the outlet of the water merging means is provided, and the cold / hot water inlet pipe and the cold / hot water outlet pipe are arranged below the refrigerant / water heat exchanger. Refrigeration equipment. 冷温水入口側配管と冷温水出口側配管とを略平行に設置すると共に、冷温水入口側配管・冷温水出口側配管それぞれの両端を開口可能に形成し、何れの端部からでも冷温水の流入／流出を可能にしたことを特徴とする請求項１・２・３・４何れかに記載のエンジン駆動式冷凍装置。The hot / cold water inlet pipe and the cold / hot water outlet pipe are installed almost in parallel, and both ends of the cold / hot water inlet pipe / cold / hot water outlet pipe are formed to be open at both ends. 5. The engine-driven refrigeration system according to claim 1, wherein the inflow / outflow is enabled.
JP06503095A 1995-02-28 1995-02-28 Engine driven refrigeration system Expired - Fee Related JP3588155B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06503095A JP3588155B2 (en) 1995-02-28 1995-02-28 Engine driven refrigeration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06503095A JP3588155B2 (en) 1995-02-28 1995-02-28 Engine driven refrigeration system

Publications (2)

Publication Number Publication Date
JPH08233405A JPH08233405A (en) 1996-09-13
JP3588155B2 true JP3588155B2 (en) 2004-11-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548377B1 (en) * 2003-12-24 2013-10-23 Sanyo Electric Co., Ltd. Refrigerating machine having refrigerant/water heat exchanger
JP4434821B2 (en) * 2004-04-12 2010-03-17 三洋電機株式会社 Air conditioner
DE602005026103D1 (en) * 2005-04-28 2011-03-10 Sanyo Electric Co air conditioning
JP5004645B2 (en) * 2007-04-23 2012-08-22 三菱電機株式会社 Refrigeration air conditioner
US11808476B2 (en) * 2018-09-21 2023-11-07 Mitsubishi Electric Corporation Relay unit heat exchanger

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