JP4911900B2 - Air conditioner - Google Patents

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JP4911900B2
JP4911900B2 JP2005006953A JP2005006953A JP4911900B2 JP 4911900 B2 JP4911900 B2 JP 4911900B2 JP 2005006953 A JP2005006953 A JP 2005006953A JP 2005006953 A JP2005006953 A JP 2005006953A JP 4911900 B2 JP4911900 B2 JP 4911900B2
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heat medium
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outside air
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JP2006194524A (en
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正明 篠原
利壽 清水
淳 大嶋
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Kubota Corp
Kubota Air Conditioner Ltd
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Kubota Air Conditioner Ltd
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Description

本発明は、全熱交換器および空調調和機に関し、研究、実験施設、工場生産ライン等における有害物質を含む排気に、水噴霧または化学水溶液を噴霧し、排気の浄化を行うと同時に熱を回収し、給気へのコンタミネーションを防止する技術に係るものである。   The present invention relates to a total heat exchanger and an air conditioner, and sprays water or a chemical aqueous solution to exhaust containing harmful substances in research, experimental facilities, factory production lines, etc., and collects heat at the same time as purifying the exhaust. In addition, the present invention relates to a technique for preventing contamination to the air supply.

この種の全交換器としては、例えば、特許文献1に開示するものがある。これは、外気導入路内に2つの冷温水コイル(熱交換器)を設け、排気通路内に2つのエアワッシャを設けたものであり、2つのエアワッシャの下方には、エアワッシャで噴霧された水を貯留する水溜を設けている。   An example of this type of total exchanger is disclosed in Patent Document 1. In this, two cold / hot water coils (heat exchangers) are provided in the outside air introduction passage, and two air washers are provided in the exhaust passage. The two air washers are sprayed by the air washer. There is a water reservoir for storing fresh water.

1段目の冷温水コイルは第一管路を通して2段目のエアワッシャに連通し、2段目のエアワッシャの水溜が第二管路を介して1段目の冷温水コイルに連通しており、2段目の冷温水コイル(熱交換器)は第一管路を通して1段目のエアワッシャに連通し、1段目のエアワッシャの水溜が第二管路を介して2段目の冷温水コイルに連通している。   The first-stage cold / hot water coil communicates with the second-stage air washer through the first pipe, and the second-stage air washer water reservoir communicates with the first-stage cold / hot water coil through the second pipe. The second-stage cold / hot water coil (heat exchanger) communicates with the first-stage air washer through the first pipe, and the water reservoir of the first-stage air washer enters the second-stage through the second pipe. It communicates with the cold / hot water coil.

この構成により、1段目の冷温水コイルから2段目のエアワッシャへ冷水を送り、水溜から1段目の冷温水コイルへ冷水を戻し、2段目の冷温水コイルから1段目のエアワッシャへ冷水を送り、水溜から2段目の冷温水コイルへ冷水を戻すものである。   With this configuration, chilled water is sent from the first-stage chilled / hot water coil to the second-stage air washer, and chilled water is returned from the water reservoir to the first-stage chilled / hot water coil. Cold water is sent to the washer, and the cold water is returned from the water reservoir to the second-stage cold / hot water coil.

そして、外気導入路内に導入された外気を1段目の冷温水コイルで冷却、除湿または減湿した後に、2段目の冷温水コイル(熱交換器)でさらに冷却、除湿または減湿して給気とし、排気通路内において排気を1段目のエアワッシャで冷却した後に、2段目のエアワッシャで加温して大気へ放出するものである。   The outside air introduced into the outside air introduction path is cooled, dehumidified or dehumidified by the first-stage cold / hot water coil, and further cooled, dehumidified or dehumidified by the second-stage cold / hot water coil (heat exchanger). Then, after the exhaust air is cooled by the first air washer in the exhaust passage, it is heated by the second air washer and released to the atmosphere.

また、特許文献2には、熱回収式ケミカルワッシャ装置が開示されている。これは、外気と非接触で当該外気を加熱・冷却するフィンタイプの給気側熱交換器において、そのフィン部分へノズルから純水を供給して気液接触により外気に含まれるケミカル成分を除去し、排気と非接触で当該排気から廃熱を回収する排気側熱交換器において、排気のエンタルピーが外気に比べて低いときに排気にノズルから液体を噴霧して廃熱を回収し、この回収した廃熱を閉ループの熱輸送回路を介して給気側熱交換器へ供給している。
特開2002−71183 特開2002−219325
Patent Document 2 discloses a heat recovery type chemical washer device. This is a fin-type air supply side heat exchanger that heats and cools the outside air without contact with the outside air. Supplying pure water from the nozzle to the fin part removes chemical components contained in the outside air by gas-liquid contact. In an exhaust-side heat exchanger that recovers waste heat from the exhaust without contact with the exhaust, when the enthalpy of the exhaust is lower than the outside air, the waste heat is recovered by spraying liquid from the nozzle to the exhaust. The waste heat is supplied to the air supply side heat exchanger through a closed loop heat transport circuit.
JP 2002-71183 A JP2002-219325

特許文献1に開示する構成では、排気通路における排気側熱回収をエアワッシャだけで行っているが、エアワッシャに噴霧された水は湿球温度近くになり、排気が高エンタルピー側となった場合に、給排気の温度差が大きくとれず、熱交換率が低くなる。また、外気導入路における熱交換は冷温水コイルによる顕熱交換であるが、中間期(暖房負荷時)には、外気に水噴霧した方が熱交換能力が高くなる。さらに、外気導入路と排気通路との間に敷設する第一管路および第二管路を各段の冷温水コイルとエアワッシャの間に設ける必要があり、配管が多くて施工性が悪くなる。   In the configuration disclosed in Patent Document 1, exhaust side heat recovery in the exhaust passage is performed only by the air washer, but the water sprayed on the air washer is close to the wet bulb temperature, and the exhaust is on the high enthalpy side In addition, the temperature difference between the supply and exhaust cannot be made large, and the heat exchange rate becomes low. In addition, heat exchange in the outside air introduction path is sensible heat exchange by a cold / hot water coil, but in the intermediate period (at the time of heating load), the heat exchange ability is higher when water is sprayed on the outside air. Furthermore, it is necessary to provide the first and second pipes laid between the outside air introduction passage and the exhaust passage between the cold / hot water coils and the air washers at each stage, resulting in poor piping and workability. .

特許文献2に開示する構成では、給気側熱交換器において常時にフィン部分へ純水を散水しており、常時に外気の湿球温度と熱交換することになるので、外気が高エンタルピー側となる場合に、外気と還気の温度差が大きくとれず、熱交換率が低くなる。給気側熱交換器においてフィン部分へ供給する純水は給気側において循環しており、噴霧する純水自体は熱交換を行わないので、純水の水温が給気側熱交換器の熱媒体の温度に近づいて、熱交換効率が低下する。排気を洗浄するために排気にノズルから液体を噴霧すると、排気の湿球温度と熱交換することになるので、排気が高エンタルピー側となる場合、外気と排気の温度差を大きくとれず、熱交換効率が低くなる。   In the configuration disclosed in Patent Document 2, pure water is constantly sprayed to the fin portion in the supply side heat exchanger, and heat exchange is always performed with the wet bulb temperature of the outside air, so that the outside air is on the high enthalpy side. In this case, the temperature difference between the outside air and the return air cannot be made large, and the heat exchange rate becomes low. The pure water supplied to the fin portion in the supply air side heat exchanger circulates on the supply air side, and the sprayed pure water itself does not exchange heat, so the water temperature of the pure water is the heat of the supply air side heat exchanger. As the temperature of the medium is approached, the heat exchange efficiency decreases. If liquid is sprayed from the nozzle to clean the exhaust, it will exchange heat with the wet bulb temperature of the exhaust, so if the exhaust is on the high enthalpy side, the temperature difference between the outside air and the exhaust cannot be made large, Exchange efficiency is low.

本発明は上記した課題を解決するものであり、対象気体が高エンタルピーである場合に顕熱交換を行い、対象気体が低エンタルピーである場合に全熱交換を行える全熱交換器、および常に全熱交換を行いつつ、排気の有害物質除去、外気の有害物質除去と清浄化を行える空気調和機を提供することを目的とする。   The present invention solves the above-described problems, and performs a sensible heat exchange when the target gas has a high enthalpy, and a total heat exchanger that can perform a total heat exchange when the target gas has a low enthalpy, and always An object of the present invention is to provide an air conditioner capable of removing harmful substances from exhaust and removing and cleaning harmful substances from outside air while performing heat exchange.

本発明の空気調和機は、気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽と、前室熱交換器および後室熱交換器に熱媒体を供給する熱媒体供給手段とで処理ユニットを構成し、前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる熱交換部と、熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を熱交換部の熱媒体入口に接続し、前室ノズルと熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、
後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の外部戻り管路を接続し、基端が前室貯留槽に連通する外部送り管路と外部戻り管路とを外部熱交換部を介して接続してなるものである。
The air conditioner of the present invention includes a front chamber for introducing a target gas from a gas inlet, a rear chamber for discharging the target gas flowing in from the front chamber from a gas outlet, a front chamber heat exchanger disposed in the front chamber, Supply heat medium to the rear chamber heat exchanger located in the room, the front chamber reservoir and rear chamber reservoir located in the lower part of each of the front chamber and rear chamber, and the front chamber heat exchanger and rear chamber heat exchanger The heat medium supply means that constitutes a processing unit, and the front chamber heat exchanger includes a heat exchange section in which the heat medium flows countercurrently to the flow of the target gas, and a front chamber that sprays the heat medium on the heat exchange section An internal feed pipe of a heat medium supply means having a nozzle and a base end communicating with the rear chamber storage tank is connected to the heat medium inlet of the heat exchange unit, and the front chamber nozzle and the heat medium outlet of the heat exchange unit are connected to each other. Connect with the connecting pipe, connect the internal return pipe of the heat medium supply means via the pipe switching means in the middle of the connecting pipe, Constituted by connecting the front chamber reservoir tip of Rikanro,
The rear chamber heat exchanger has a gas-liquid contact medium and a rear chamber nozzle that sprays the heat medium on the gas-liquid contact medium, and connects the external return pipe of the heat medium supply means to the rear chamber nozzle. Is formed by connecting an external feed line communicating with the anterior chamber storage tank and an external return line via an external heat exchange section.

また、一対の処理ユニットを備え、一方の処理ユニットが対象気体として外気を系内に導入する外気処理ユニットをなし、他方の処理ユニットが対象気体として排気を系外へ排出する熱回収ユニットをなし、外部熱交換部において外気処理ユニットと熱回収ユニットとの熱交換を行うものである。   In addition, a pair of processing units is provided, one processing unit is an outside air processing unit that introduces outside air as a target gas into the system, and the other processing unit is a heat recovery unit that discharges exhaust as a target gas outside the system. In the external heat exchange unit, heat exchange is performed between the outside air processing unit and the heat recovery unit.

また、外気処理ユニットは、後室ノズルに接続する熱媒体供給手段の外部送り管路が途中に設ける管路切り替え手段を介して熱媒体供給手段のバイパス管路に接続し、バイパス管路の先端を後室貯留槽に接続してなるものである。   The outside air processing unit is connected to the bypass conduit of the heat medium supply means via the conduit switching means provided in the middle of the external feed conduit of the heat medium supply means connected to the rear chamber nozzle, and the tip of the bypass conduit Is connected to the rear chamber storage tank.

本発明の空気調和機は、対象気体として外気を系内に導入する外気処理ユニットと、対象気体として排気を系外へ排出する熱回収ユニットを有し、熱回収ユニットは、気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽と、前室熱交換器と後室熱交換器に熱媒体を供給する熱媒体供給手段とを備え、前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる排気熱交換部と、排気熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を排気熱交換部の熱媒体入口に接続し、前室ノズルと排気熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の外部戻り管路を接続し、基端が前室貯留槽に連通する熱媒体供給手段の外部送り管路と外部戻り管路とを外気処理ユニットを介して接続してなり、外気処理ユニットは、気体入口から導入する対象気体を気体出口から排出する処理室を有し、処理室内に外気熱交換部を対象気体の流れ方向に沿って多段に配置し、各外気熱交換部を連絡管路で接続し、対象気体の流れ方向で最下流の外気熱交換部の熱媒体入口に熱回収ユニットの外部送り管路を接続し、外気熱交換部の熱媒体出口に熱回収ユニットの外部戻り管路を接続したものである。 The air conditioner of the present invention has an outside air processing unit that introduces outside air as a target gas into the system, and a heat recovery unit that discharges exhaust gas outside the system as a target gas. A front chamber into which the target gas flowing in from the front chamber is discharged from the gas outlet, a front chamber heat exchanger disposed in the front chamber, a rear chamber heat exchanger disposed in the rear chamber, and the front chamber Front chamber storage tank and rear chamber storage tank disposed in the lower part of each of the rear chamber, and a front chamber heat exchanger and a heat medium supply means for supplying a heat medium to the rear chamber heat exchanger. The apparatus has an exhaust heat exchange part in which the heat medium flows countercurrently to the flow of the target gas, and a front chamber nozzle that sprays the heat medium on the exhaust heat exchange part, and a proximal end communicates with the rear chamber storage tank. Connect the internal feed line of the heat medium supply means to the heat medium inlet of the exhaust heat exchanger, Connect the heat medium outlet of the exchange part with a communication line, connect the internal return line of the heat medium supply means via the line switching means in the middle of the connection line, and connect the tip of the internal return line to the front chamber The rear chamber heat exchanger connected to the storage tank has a gas-liquid contact medium and a rear chamber nozzle for spraying the heat medium onto the gas-liquid contact medium, and the rear chamber nozzle returns to the outside of the heat medium supply means. An external feed pipe and an external return pipe of the heat medium supply means connected to each other and having a proximal end communicating with the front chamber storage tank are connected via an outside air processing unit. Has a processing chamber that discharges the target gas introduced from the gas outlet from the gas outlet, and the outside air heat exchanging section is arranged in multiple stages along the flow direction of the target gas in the processing chamber, and each outside air heat exchanging section is connected by a connecting pipeline. heat recovery unit to the heating medium inlet of the outside air heat exchanger of the most downstream in the direction of the flow of the target gas Connect the external feed line is obtained by connecting the external return line of the heat recovery unit to the heating medium outlet of the outdoor air heat exchanger.

本発明の空気調和機は、対象気体として外気を系内に導入する外気処理ユニットと、対象気体として排気を系外へ排出する熱回収ユニットを有し、外気処理ユニットおよび熱回収ユニットに熱媒体を供給する熱媒体供給手段と、外気処理ユニットと熱回収ユニットとの熱交換を行う外部熱交換部を有し、熱回収ユニットは、気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽を備え、前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる排気熱交換部と、排気熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を排気熱交換部の熱媒体入口に接続し、前室ノズルと排気熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の熱回収ユニット用の外部戻り管路を接続し、この外部戻り管路と基端が前室貯留槽に連通する熱媒体供給手段の熱回収ユニット用の外部送り管路とを外部熱交換部を介して接続し、外気処理ユニットは、気体入口から導入する対象気体を気体出口から排出する処理室を有し、処理室内に外気熱交換部を対象気体の流れ方向に沿って多段に配置し、各外気熱交換部を連絡管路で接続し、対象気体の流れ方向で最下流の外気熱交換部の熱媒体入口に熱媒体供給手段の外気処理ユニット用の外部戻り管路を接続し、この外部戻り管路と対象気体の流れ方向で最上流の外気熱交換部の熱媒体出口に接続する熱媒体供給手段の外気処理ユニット用の外部送り管路とを外部熱交換部を介して接続したものである。 The air conditioner of the present invention has an outside air processing unit that introduces outside air into the system as a target gas, and a heat recovery unit that discharges exhaust gas outside the system as a target gas. A heat medium is provided to the outside air processing unit and the heat recovery unit. A heat medium supplying means for supplying heat, an external heat exchange unit for exchanging heat between the outside air processing unit and the heat recovery unit, and the heat recovery unit from the front chamber for introducing the target gas from the gas inlet, Arranged in the lower part of the front chamber and the rear chamber, the rear chamber for discharging the target gas flowing in from the gas outlet, the front chamber heat exchanger disposed in the front chamber, the rear chamber heat exchanger disposed in the rear chamber, The front chamber heat exchanger includes a front chamber storage tank and a rear chamber storage tank, and the front chamber heat exchanger has a heat medium flowing countercurrently to the target gas flow and before the heat medium is sprayed on the exhaust heat exchange section. A heating medium having a chamber nozzle and a proximal end communicating with the rear chamber storage tank The internal feed line of the supply means is connected to the heat medium inlet of the exhaust heat exchanger, the front chamber nozzle and the heat medium outlet of the exhaust heat exchanger are connected by a connecting line, and the pipe is switched in the middle of the connecting line. The internal return pipe of the heat medium supply means is connected via the means, and the tip of the internal return pipe is connected to the front chamber storage tank. The rear chamber heat exchanger is connected to the gas-liquid contact medium and the gas-liquid contact. A rear chamber nozzle for spraying a heat medium on the medium, and an external return pipe for the heat recovery unit of the heat medium supply means is connected to the rear chamber nozzle, and the external return pipe and the base end are the front chamber storage tank An external feed line for the heat recovery unit of the heat medium supply means communicating with the external heat exchange section is connected via the external heat exchange unit, and the outside air processing unit has a processing chamber for discharging the target gas introduced from the gas inlet from the gas outlet. It has, arranged in multiple stages along the flow direction of the target gas with the outside air heat exchanger into the processing chamber Connects the respective outdoor air heat exchanger in communication pipe line, connect the external return line for outdoor air processing unit of the heating medium supply means to the heat medium inlet of the most downstream of the outside air heat exchanger in the flow direction of the target gas, The external return line and the external feed line for the external air processing unit of the heat medium supply means connected to the heat medium outlet of the most upstream external air heat exchanger in the flow direction of the target gas are connected via the external heat exchanger. It is what.

また、外気処理ユニットの各外気熱交換部に加湿器を配置したものである。 In addition, a humidifier is arranged in each outside air heat exchange section of the outside air processing unit.

また、熱回収ユニットは、前室熱交換器へ流入する前の対象気体に熱媒体を噴霧する予前ノズルを有し、外部送り管路から分岐する内部循環管路を予前ノズルに接続してなるものである。   In addition, the heat recovery unit has a preliminary nozzle for spraying a heat medium onto the target gas before flowing into the front chamber heat exchanger, and connects the internal circulation pipe branched from the external feed pipe to the preliminary nozzle. It will be.

本発明の空気調和機の運転方法は、後室熱交換器は、常時、気液接触メディアに後室ノズルから熱媒体を噴霧し、前室熱交換器は対象気体のエンタルピーに応じて連絡管路の途中の管路切り替え手段を操作し、熱交換部を通った熱媒体が前室ノズルから前記熱交換部へ噴霧された後に前室貯留槽へ至る湿式の全熱交換運転と、熱交換部を通った熱媒体が内部戻り管路を通って前室貯留槽へ至る乾式の顕熱交換運転とを切り替えて運転するものである。 In the operation method of the air conditioner of the present invention, the rear chamber heat exchanger always sprays the heat medium from the rear chamber nozzle onto the gas-liquid contact medium, and the front chamber heat exchanger communicates with the communication tube according to the enthalpy of the target gas. Wet pipe switching means in the middle of the path, the heat medium that has passed through the heat exchanging section sprayed from the front chamber nozzle to the heat exchanging section and then the wet total heat exchanging operation to the front chamber storage tank, and heat exchange The operation is performed by switching between the dry sensible heat exchange operation in which the heat medium passing through the section reaches the front chamber storage tank through the internal return pipe.

以上のように本発明によれば、対象気体のエンタルピーに応じて連絡管路の途中の管路切り替え手段を操作し、熱交換部を通った熱媒体が前室ノズルから前記熱交換部へ噴霧された後に前室貯留槽へ至る湿式の全熱交換運転と、熱交換部を通った熱媒体が内部戻り管路を通って前室貯留槽へ至る乾式の顕熱交換運転とを切り替えて運転することが可能となり、外気と排気の大きな温度差の範囲にて運転でき、全熱交換で回収した熱を有効利用できる。   As described above, according to the present invention, the heat medium passing through the heat exchanging unit is sprayed from the front chamber nozzle to the heat exchanging unit by operating the pipe switching unit in the middle of the connecting pipe according to the enthalpy of the target gas. Operation is switched between a wet total heat exchange operation that reaches the front chamber storage tank and a dry sensible heat exchange operation in which the heat medium that has passed through the heat exchange section passes through the internal return pipe to the front chamber storage tank. It is possible to operate within a large temperature difference between the outside air and the exhaust, and the heat recovered by total heat exchange can be used effectively.

以下、本発明の実施の形態を図面に基づいて説明する。図1において、空気調和機は、外気処理ユニット1と熱回収ユニット2を備えており、外気処理ユニット1は外気3を導入して処理後に給気4として空調対象系内へ供給するものであり、熱回収ユニット2は空調対象系から排出する排気(還気)5を導入して処理後に空調対象系外の大気6へ排出するものであり、外気処理ユニット1と熱回収ユニット2は外部熱交換部7において熱交換を行う。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, the air conditioner includes an outside air processing unit 1 and a heat recovery unit 2. The outside air processing unit 1 introduces outside air 3 and supplies it as air supply 4 after processing into the air conditioning target system. The heat recovery unit 2 introduces exhaust (return air) 5 discharged from the air-conditioning target system and discharges it to the atmosphere 6 outside the air-conditioning target system after processing. The outside air processing unit 1 and the heat recovery unit 2 are external heat sources. Heat exchange is performed in the exchange unit 7.

熱回収ユニット2は、排気5を導入する気体入口8を設けた前室9と、処理した空気を大気5へ排出する気体出口10を設けた後室11とを備えており、前室9と後室11を隔てる隔壁12の上部に通気口13を有し、通気口13を通して前室9から後室11へ空気が流入する。   The heat recovery unit 2 includes a front chamber 9 provided with a gas inlet 8 for introducing exhaust 5 and a rear chamber 11 provided with a gas outlet 10 for discharging processed air to the atmosphere 5. An air vent 13 is provided in the upper part of the partition wall 12 separating the rear chamber 11, and air flows from the front chamber 9 into the rear chamber 11 through the air vent 13.

前室9に前室熱交換器14を配置し、後室11に後室熱交換器15を配置しており、前室9と後室11のそれぞれの下部に前室貯留槽16および後室貯留槽17を設け、前室貯留槽16および後室貯留槽17の水位を同じレベルに調整するための通水孔18を隔壁12に設けている。前室熱交換器14および後室熱交換器15には熱媒体(水)を供給する熱媒体供給手段をなす熱媒体供給管路系19を接続している。   A front chamber heat exchanger 14 is disposed in the front chamber 9, a rear chamber heat exchanger 15 is disposed in the rear chamber 11, and a front chamber storage tank 16 and a rear chamber are disposed in the lower portions of the front chamber 9 and the rear chamber 11, respectively. A storage tank 17 is provided, and a water passage hole 18 for adjusting the water level of the front chamber storage tank 16 and the rear chamber storage tank 17 to the same level is provided in the partition wall 12. The front chamber heat exchanger 14 and the rear chamber heat exchanger 15 are connected to a heat medium supply pipe line system 19 serving as a heat medium supply means for supplying a heat medium (water).

前室熱交換器14は、熱媒体が流れる熱交換部20と、熱交換部20に熱媒体を噴霧する噴霧部をなす前室ノズル21とを有している。熱交換部20は複数の平行に配置したフィンに複数のチューブを挿入したコイルからなり、フィン面を上下方向に沿わせて設置しており、熱媒体入口22aと熱媒体出口22bを有している。熱媒体入口22aから熱交換部20に流入した熱媒体は空気の流れに対向する逆方向へ流れて熱媒体出口22bへ至る。前室ノズル21は空気の流れに対向する逆方向へ熱媒体を噴霧する。   The front chamber heat exchanger 14 includes a heat exchange section 20 through which a heat medium flows, and a front chamber nozzle 21 that forms a spray section that sprays the heat medium onto the heat exchange section 20. The heat exchanging unit 20 is composed of a coil in which a plurality of tubes are inserted into a plurality of fins arranged in parallel, and the fin surface is installed along the vertical direction, and has a heat medium inlet 22a and a heat medium outlet 22b. Yes. The heat medium flowing into the heat exchanging unit 20 from the heat medium inlet 22a flows in the opposite direction opposite to the air flow and reaches the heat medium outlet 22b. The front chamber nozzle 21 sprays the heat medium in the opposite direction opposite to the air flow.

後室熱交換器15は、気液接触メディア23と、気液接触メディア23に熱媒体を噴霧する噴霧部をなす後室ノズル24とを有している。気液接触メディア23は熱媒体を担持するメディアとして複数の平行に配置したフィンを有し、フィンの表面に熱媒体を担持して空気との接触を行うものである。気液接触メディア23のメディアはステンレス等の金属線材で形成することも可能である。   The rear chamber heat exchanger 15 includes a gas-liquid contact medium 23 and a rear chamber nozzle 24 that forms a spray unit that sprays the heat medium on the gas-liquid contact medium 23. The gas-liquid contact medium 23 has a plurality of fins arranged in parallel as a medium for carrying a heat medium, and carries the heat medium on the surface of the fin to make contact with air. The medium of the gas-liquid contact medium 23 can also be formed of a metal wire such as stainless steel.

前室熱交換器14の下方には予前ノズル25を配置しており、予前ノズル25は前室熱交換器14へ流入する前の空気に熱媒体を噴霧する。
熱媒体供給管路系19は、ポンプ26aを有する内部送り管路26が後室貯留槽17と熱交換部20の熱媒体入口22aとを接続し、連絡管路27が前室ノズル21と熱交換部20の熱媒体出口22bとを接続し、連絡管路27の途中に管路切り替え手段をなす三方弁28を介して内部戻り管路29が接続し、内部戻り管路29の先端が前室貯留槽16に連通している。また、外部戻り管路30が後室ノズル24に接続し、ポンプ31aを有する外部送り管路31が前室貯留槽16に接続し、外部戻り管路30と外部送り管路31が外部熱交換部7を介して連通し、外部送り管路31から分岐して開閉弁32をする内部循環管路33が予前ノズル25に接続している。また、前室9にはオーバーフロー管34が所定位置に開口し、後室11には補給水管路35が接続している。
A preliminary nozzle 25 is disposed below the front chamber heat exchanger 14, and the preliminary nozzle 25 sprays a heat medium on the air before flowing into the front chamber heat exchanger 14.
In the heat medium supply line system 19, an internal feed line 26 having a pump 26 a connects the rear chamber storage tank 17 and the heat medium inlet 22 a of the heat exchange unit 20, and a communication line 27 connects the front chamber nozzle 21 and the heat medium. An internal return line 29 is connected to the heat medium outlet 22b of the exchange unit 20 via a three-way valve 28 serving as a line switching means in the middle of the connecting line 27, and the front end of the internal return line 29 is connected to the front. It communicates with the chamber storage tank 16. Further, the external return line 30 is connected to the rear chamber nozzle 24, the external feed line 31 having a pump 31a is connected to the front chamber storage tank 16, and the external return line 30 and the external feed line 31 are external heat exchanges. An internal circulation line 33 communicating with the part 7 and branching from the external feed line 31 and serving as an on-off valve 32 is connected to the preliminary nozzle 25. In addition, an overflow pipe 34 opens at a predetermined position in the front chamber 9, and a makeup water pipe 35 is connected to the rear chamber 11.

外気処理ユニット1は、基本的な構成において熱回収ユニット2と同様の構成部材を備えており、各構成部材の説明を省略して符号に100を付加して表記する。外気処理ユニット1と熱回収ユニット2とが異なる点は以下の点である。   The outside air processing unit 1 includes the same components as the heat recovery unit 2 in the basic configuration, and description of each component is omitted and 100 is added to the reference numeral. The difference between the outside air processing unit 1 and the heat recovery unit 2 is as follows.

熱回収ユニット2では気体入口8および気体出口10がユニット下部に位置し、通気口13が隔壁12の上部側に位置し、外気処理ユニット1では気体入口108および気体出口110がユニット上部に位置し、通気口113が隔壁112の下部側に位置する。また、予前ノズル25、開閉弁32、内部循環管路33を設けておらず、外部戻り管路130の途中に三方弁130aを介してバイパス管路130bを設けている。外部戻り管路130の途中に設ける三方弁130aおよびバイパス管路130bは必要に応じて設けるものであり、これらの構成がない場合もある。   In the heat recovery unit 2, the gas inlet 8 and the gas outlet 10 are located at the lower part of the unit, the vent hole 13 is located at the upper side of the partition wall 12, and in the outside air processing unit 1, the gas inlet 108 and the gas outlet 110 are located at the upper part of the unit. The vent 113 is located on the lower side of the partition wall 112. Further, the preliminary nozzle 25, the on-off valve 32, and the internal circulation line 33 are not provided, and a bypass line 130b is provided in the middle of the external return line 130 via a three-way valve 130a. The three-way valve 130a and the bypass conduit 130b provided in the middle of the external return conduit 130 are provided as necessary, and may not have these configurations.

熱回収ユニット2の気体出口10には排気ファン装置36が接続し、外気処理ユニット1の気体出口110には給気ファン装置136が接続している。また、外気処理ユニット1の外部戻り管路130と外部送り管路131が外部熱交換部7を介して連通し、外部熱交換部7において外気処理ユニット1を流れる熱媒体と熱回収ユニット2を流れる熱媒体との間で熱交換を行う。   An exhaust fan device 36 is connected to the gas outlet 10 of the heat recovery unit 2, and an air supply fan device 136 is connected to the gas outlet 110 of the outside air processing unit 1. In addition, the external return pipe 130 and the external feed pipe 131 of the outside air processing unit 1 communicate with each other via the outside heat exchanging unit 7, and the heat medium flowing through the outside air processing unit 1 and the heat recovery unit 2 are connected to the outside heat exchanging unit 7. Heat exchange is performed with the flowing heat medium.

以下、上記した構成における作用を説明する。外気処理ユニット1において、気体入口108から前室109へ流入する外気3は、前室熱交換器114を上方から下方へ通過し、隔壁112の下部の通気口113を通って後室111へ流入し、後室熱交換器115を下方から上方へ通過し、気体出口110から給気ファン装置136に流入し、給気ファン装置136から空調対象系へ給気4として供給する。   Hereinafter, the operation of the above-described configuration will be described. In the outside air processing unit 1, outside air 3 flowing into the front chamber 109 from the gas inlet 108 passes from the top to the bottom through the front chamber heat exchanger 114, and flows into the rear chamber 111 through the vent 113 at the bottom of the partition wall 112. Then, the air passes through the rear chamber heat exchanger 115 from the lower side to the upper side, flows into the air supply fan device 136 from the gas outlet 110, and is supplied from the air supply fan device 136 to the air conditioning target system as the air supply 4.

熱回収ユニット2において、空調対象系から気体入口8を通して前室9へ流入する排気5は、前室熱交換器14を下方から上方へ通過し、隔壁12の上部の通気口13を通って後室11へ流入し、後室熱交換器15を上方から下方へ通過し、気体出口10から排気ファン装置36に流入し、排気ファン装置36から大気6へ排出する。   In the heat recovery unit 2, the exhaust 5 flowing into the front chamber 9 from the air-conditioning target system through the gas inlet 8 passes through the front chamber heat exchanger 14 from below to above and passes through the vent 13 at the top of the partition wall 12. The air flows into the chamber 11, passes through the rear chamber heat exchanger 15 from the upper side to the lower side, flows into the exhaust fan device 36 from the gas outlet 10, and is discharged from the exhaust fan device 36 to the atmosphere 6.

次に、熱媒体の流れを説明する。図1は夏モードの運転状態を示しており、外気処理ユニット1の前室熱交換器114は、連絡管路127の三方弁128が熱交換部120の熱媒体出口122bと内部戻り管路129とを連通し、前室ノズル121に対して遮断する状態にあり、熱交換部120を通った熱媒体が内部戻り管路129を通って前室貯留槽116へ至る乾式の顕熱交換器として運転する。後室熱交換器115は、外部戻り管路130の三方弁130aを後室ノズル124に対して連通し、バイパス管路130bに対して遮断する状態にあり、全熱交換器として運転する。   Next, the flow of the heat medium will be described. FIG. 1 shows an operation state in the summer mode. In the front chamber heat exchanger 114 of the outside air processing unit 1, the three-way valve 128 of the communication pipe 127 is connected to the heat medium outlet 122 b of the heat exchanger 120 and the internal return pipe 129. As a dry-type sensible heat exchanger in which the heat medium passing through the heat exchange section 120 passes through the internal return pipe 129 and reaches the front chamber storage tank 116. drive. The rear chamber heat exchanger 115 communicates the three-way valve 130a of the external return line 130 with the rear chamber nozzle 124 and shuts off the bypass line 130b, and operates as a total heat exchanger.

また、熱回収ユニット2の前室熱交換器14は、連絡管路27の三方弁28が熱交換部20の熱媒体出口22bと前室ノズル21とを連通し、内部戻り管路29に対して遮断する状態にあり、熱交換部20を通った熱媒体が前室ノズル21から熱交換部20へ噴霧された後に前室貯留槽16へ至る湿式の全熱交換器として運転する。後室熱交換器15は全熱交換器である。   Further, in the front chamber heat exchanger 14 of the heat recovery unit 2, the three-way valve 28 of the communication line 27 communicates the heat medium outlet 22 b of the heat exchange unit 20 and the front chamber nozzle 21, and the internal return pipe 29 is connected. The heat medium that has passed through the heat exchanger 20 is sprayed from the front chamber nozzle 21 to the heat exchanger 20 and then operates as a wet total heat exchanger that reaches the front chamber reservoir 16. The rear chamber heat exchanger 15 is a total heat exchanger.

このように、前室熱交換器14、114は、対象気体のエンタルピーに応じて連絡管路27、127の途中の三方弁28、128を操作し、湿式の全熱交換運転と乾式の顕熱交換運転とを切り替えて運転する。すなわち、外気処理ユニット1では供給する熱媒体に比べて外気3のエンタルピーが高いので、前室熱交換器114で顕熱交換し、後室熱交換器115で全熱交換する運転を行い、熱回収ユニット2では供給する熱媒体に比べて排気5のエンタルピーが低いので、前室熱交換器14および後室熱交換器115で全熱交換する運転を行う。   As described above, the front chamber heat exchangers 14 and 114 operate the three-way valves 28 and 128 in the middle of the connecting pipe lines 27 and 127 according to the enthalpy of the target gas, and perform the wet total heat exchange operation and the dry sensible heat. Switch to exchange operation. That is, since the enthalpy of the outside air 3 is higher in the outside air processing unit 1 than the supplied heat medium, the sensible heat exchange is performed in the front chamber heat exchanger 114 and the total heat exchange is performed in the rear chamber heat exchanger 115. In the recovery unit 2, the enthalpy of the exhaust 5 is lower than that of the heat medium to be supplied.

外気処理ユニット1において、内部送り管路126から前室熱交換器114に供給する熱媒体は、熱交換部120においてフィンを通して乾式で顕熱交換して外気3を冷却し、内部戻り管路129を通って前室貯留槽116へ流れる。   In the outside air processing unit 1, the heat medium supplied from the internal feed line 126 to the front chamber heat exchanger 114 is sensible heat exchanged through fins in the heat exchanging unit 120 to cool the outside air 3, and the internal return line 129. Flows through the front chamber storage tank 116.

前室貯留槽116の熱媒体は外部送り管路131を通って外部熱交換部7で冷却した後に、外部戻り管路130から後室ノズル124に供給して気液接触メディア123に噴霧する。気液接触メディア123のフィンの表面に担持された熱媒体は、前室熱交換器114で冷却した外気3と湿式で全熱交換する。また、後室ノズル124から気液接触メディア123に噴霧する熱媒体が外気3を浄化する。気液接触メディア123から後室貯留槽117へ流下した熱媒体は内部送り管路126から前室熱交換器114へ供給される。また、後室貯留槽117に補給水管路135から新鮮水を補給する。気液接触メディア123で冷却・浄化した空気は給気ファン装置136によって空調対象系へ供給する。   The heat medium in the front chamber storage tank 116 passes through the external feed pipe 131 and is cooled by the external heat exchange unit 7, and then supplied from the external return pipe 130 to the rear chamber nozzle 124 and sprayed onto the gas-liquid contact medium 123. The heat medium carried on the surfaces of the fins of the gas-liquid contact medium 123 performs total heat exchange with the outside air 3 cooled by the front chamber heat exchanger 114 in a wet manner. Further, the heat medium sprayed from the rear chamber nozzle 124 to the gas-liquid contact medium 123 purifies the outside air 3. The heat medium flowing down from the gas-liquid contact medium 123 to the rear chamber storage tank 117 is supplied to the front chamber heat exchanger 114 from the internal feed line 126. Further, fresh water is supplied to the rear chamber storage tank 117 from the supply water pipe 135. The air cooled and purified by the gas-liquid contact medium 123 is supplied to the air conditioning target system by the air supply fan device 136.

上述したように、外気処理ユニット1では外気3と熱媒体が向流、つまり外気3が前室側から後室側へ、熱媒体が後室側から前室側へ流れることで冷却効率が高まり、例えば、DB(乾球温度)32℃/WB(湿球温度)27℃の外気3がDB(乾球温度)22.1℃/WB(湿球温度)22.1℃の給気4となり、外部熱交換部7から出る20.3℃の熱媒体が26.5℃で戻ってくる。また、外部熱交換部7において外気処理ユニット1を流れる熱媒体と熱回収ユニット2を流れる熱媒体との間で熱交換を行うことで、外気処理ユニット1および熱回収ユニット2で全熱交換してもコンタミネーションは発生しない。   As described above, in the outside air processing unit 1, the outside air 3 and the heat medium counter-flow, that is, the outside air 3 flows from the front chamber side to the rear chamber side, and the heat medium flows from the rear chamber side to the front chamber side, thereby increasing the cooling efficiency. For example, outside air 3 with DB (dry bulb temperature) 32 ° C./WB (wet bulb temperature) 27 ° C. becomes supply air 4 with DB (dry bulb temperature) 22.1 ° C./WB (wet bulb temperature) 22.1 ° C. The 20.3 ° C. heat medium coming out of the external heat exchanging unit 7 returns at 26.5 ° C. In addition, by performing heat exchange between the heat medium flowing through the outside air processing unit 1 and the heat medium flowing through the heat recovery unit 2 in the external heat exchange unit 7, total heat exchange is performed between the outside air processing unit 1 and the heat recovery unit 2. However, no contamination occurs.

熱回収ユニット2において、内部送り管路26から前室熱交換器14に供給する熱媒体は、熱交換部20を通って連絡管路27から前室ノズル21に達し、熱交換部20に噴霧され、フィン表面において湿式で全熱交換して排気5から冷熱を奪い、前室貯留槽16へ流下する。   In the heat recovery unit 2, the heat medium supplied from the internal feed pipe 26 to the front chamber heat exchanger 14 reaches the front chamber nozzle 21 from the communication pipe 27 through the heat exchanger 20, and sprays on the heat exchanger 20. Then, the entire heat is exchanged wet on the fin surface to take the cold from the exhaust 5 and flow down to the front chamber storage tank 16.

また、開閉弁32を開栓して、前室貯留槽16へ流れた熱媒体を内部循環管路33から予前ノズル25へ供給し、熱交換部20に流入する前の排気5に予前ノズル25から熱媒体を噴霧する。   Further, the opening / closing valve 32 is opened, the heat medium flowing to the front chamber storage tank 16 is supplied from the internal circulation pipe 33 to the preliminary nozzle 25, and the exhaust 5 before flowing into the heat exchanging unit 20 is A heat medium is sprayed from the nozzle 25.

前室貯留槽16の熱媒体は外部送り管路31を通って外部熱交換部7で昇温した後に、外部戻り管路30から後室ノズル24に供給して気液接触メディア23に噴霧する。気液接触メディア23のフィンの表面に担持された熱媒体は、前室熱交換器14で加温した排気5と湿式で全熱交換する。   The heat medium in the front chamber storage tank 16 is heated by the external heat exchange unit 7 through the external feed pipe 31 and then supplied from the external return pipe 30 to the rear chamber nozzle 24 to be sprayed on the gas-liquid contact medium 23. . The heat medium carried on the surfaces of the fins of the gas-liquid contact medium 23 is wet-heated and totally exchanged with the exhaust 5 heated by the front chamber heat exchanger 14.

気液接触メディア23から後室貯留槽17へ流下した熱媒体は内部送り管路26から前室熱交換器14へ供給される。また、後室貯留槽17に補給水管路35から新鮮水を補給する。気液接触メディア23で加温した空気は排気ファン装置36によって空調対象系外へ排出する。   The heat medium flowing down from the gas-liquid contact medium 23 to the rear chamber storage tank 17 is supplied to the front chamber heat exchanger 14 from the internal feed line 26. In addition, fresh water is supplied to the rear chamber storage tank 17 from the supply water pipe 35. The air heated by the gas-liquid contact medium 23 is discharged outside the air-conditioning target system by the exhaust fan device 36.

上述したように、熱回収ユニット2では排気5と熱媒体が向流、つまり排気5が前室側から後室側へ、熱媒体が後室側から前室側へ流れることで熱交換効率が高まり、例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)23.2℃/WB(湿球温度)23.2℃の空気となって大気6へ排出され、外部熱交換部7から出る25.5℃の熱媒体が19.3℃で戻ってくる。   As described above, in the heat recovery unit 2, the exhaust 5 and the heat medium are counter-flowed, that is, the heat exchange efficiency is improved by the exhaust 5 flowing from the front chamber side to the rear chamber side and the heat medium flowing from the rear chamber side to the front chamber side. For example, the exhaust 5 with DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) 16 ° C. becomes air with DB (dry bulb temperature) 23.2 ° C./WB (wet bulb temperature) 23.2 ° C. Then, the 25.5 ° C. heat medium discharged from the external heat exchange unit 7 is returned to the atmosphere 6 and returned at 19.3 ° C.

この夏モードにおける空気の状態遷移を図5(a)の空気線図に示す。外気3は給気4となって空調対象系へ流入し、空調対象系から排出する排気(還気)5は大気6となる。この空気線図において、線aは外気処理ユニット1において熱媒体を噴霧する状態での外気3の理想変化(等エンタルピー変化)を示し、線bは熱回収ユニット2において熱媒体を噴霧する状態での排気5の理想変化(等エンタルピー変化)を示している。   The air state transition in this summer mode is shown in the air diagram of FIG. The outside air 3 becomes the supply air 4 and flows into the air conditioning target system, and the exhaust (return air) 5 discharged from the air conditioning target system becomes the atmosphere 6. In this air diagram, a line a shows an ideal change (equal enthalpy change) of the outside air 3 in a state where the heat medium is sprayed in the outside air processing unit 1, and a line b shows a state where the heat medium is sprayed in the heat recovery unit 2. The ideal change (isoenthalpy change) of the exhaust 5 is shown.

外気3と排気5との間のエンタルピー変化量Δi、外気3と給気4との間のエンタルピー変化量Δi、排気5と大気6との間のエンタルピー変化量Δiであり、効率[Δi(≒Δi)/Δi]であり、外気3の乾球温度(OA,DB)と排気5の湿球温度(RA,WB)との大きな温度差の範囲にて運転でき、全熱交換で回収した熱を有効利用できる。 Enthalpy change .DELTA.i A between the outside air 3 and the exhaust 5, enthalpy change .DELTA.i S between the outside air 3 and the air supply 4 is enthalpy change .DELTA.i e between the exhaust 5 and the atmosphere 6, efficiency [ Δi S (≈Δi e ) / Δi A ], which can be operated within a large temperature difference range between the dry bulb temperature (OA, DB) of the outside air 3 and the wet bulb temperature (RA, WB) of the exhaust 5, The heat recovered by heat exchange can be used effectively.

ここで、従来の構成における空気の状態遷移との比較ついて説明する。図6(a)は、外気処理を行う熱交換器51と排気処理を行う熱交換器52との間において熱媒体が循環するループ回路53を設けた構成および、その空気線図を示しており、外気3が熱交換器51の顕熱交換で給気4となり、排気(還気)5が熱交換器52の顕熱交換で大気6となる。この場合には、外気3の乾球温度(OA,DB)と排気5の乾球温度(RA,DB)との温度差における運転となる。   Here, a comparison with the air state transition in the conventional configuration will be described. FIG. 6A shows a configuration in which a loop circuit 53 in which a heat medium circulates between a heat exchanger 51 that performs an outside air process and a heat exchanger 52 that performs an exhaust process, and an air diagram thereof. The outside air 3 becomes the supply air 4 by the sensible heat exchange of the heat exchanger 51, and the exhaust (return air) 5 becomes the atmosphere 6 by the sensible heat exchange of the heat exchanger 52. In this case, the operation is performed at a temperature difference between the dry bulb temperature (OA, DB) of the outside air 3 and the dry bulb temperature (RA, DB) of the exhaust 5.

図6(b)は、外気処理を行う熱交換器51と排気処理を行う熱交換器52との間において熱媒体が循環するループ回路53を設け、排気処理を行う熱交換器52に向けてノズル54から別途の水を噴霧する構成および、その空気線図を示しており、外気3が熱交換器51の顕熱交換で給気4となり、排気(還気)5が水噴霧と熱交換器52の顕熱交換で大気6(6’は理想点)となる。この場合には、外気3の乾球温度(OA,DB)と排気5の湿球温度(RA,WB)との温度差における運転となるが、ノズル54から噴霧する水で回収した熱量は有効利用されず、顕熱交換のみとなるので、理想的に100%の熱交換をしても理想点6’に対応するΔi’を越える熱交換は出来ない。 FIG. 6B shows a loop circuit 53 in which a heat medium circulates between a heat exchanger 51 that performs an outside air process and a heat exchanger 52 that performs an exhaust process, toward the heat exchanger 52 that performs an exhaust process. The structure which sprays separate water from the nozzle 54, and its air diagram are shown, the outside air 3 becomes the supply air 4 by sensible heat exchange of the heat exchanger 51, and the exhaust (return air) 5 exchanges heat with the water spray. The sensible heat exchange of the vessel 52 results in the atmosphere 6 (6 ′ is an ideal point). In this case, the operation is performed at a temperature difference between the dry bulb temperature (OA, DB) of the outside air 3 and the wet bulb temperature (RA, WB) of the exhaust 5, but the amount of heat recovered from the water sprayed from the nozzle 54 is effective. Since it is not used and only sensible heat exchange is performed, heat exchange exceeding Δi e ′ corresponding to the ideal point 6 ′ cannot be performed even if heat exchange is ideally 100%.

図2は中間期モード(冷房負荷時)の運転状態を示しており、外気処理ユニット1の前室熱交換器114は、連絡管路127の三方弁128が熱交換部120の熱媒体出口122bと前室ノズル121とを遮断し、内部戻り管路129に対して連通する状態にあり、熱交換部120を通った熱媒体が内部戻り管路129を通って前室貯留槽116へ至る乾式の顕熱交換器として運転する。後室熱交換器115は、外部戻り管路130の三方弁130aを後室ノズル124に対して遮断し、バイパス管路130bに対して連通する状態にあり、熱交換器としての運転を停止する。   FIG. 2 shows an operation state in the intermediate period mode (at the time of cooling load). In the front chamber heat exchanger 114 of the outside air processing unit 1, the three-way valve 128 of the communication pipe 127 is the heat medium outlet 122 b of the heat exchanger 120. And the front chamber nozzle 121 are in a state of being in communication with the internal return pipe 129, and the heat medium that has passed through the heat exchange unit 120 passes through the internal return pipe 129 and reaches the front chamber storage tank 116. It operates as a sensible heat exchanger. The rear chamber heat exchanger 115 is in a state where the three-way valve 130a of the external return line 130 is shut off from the rear chamber nozzle 124 and communicates with the bypass line 130b, and the operation as the heat exchanger is stopped. .

また、熱回収処理ユニット2の前室熱交換器14は、夏モードと同様に運転する。すなわち、外気処理ユニット1では供給する熱媒体に比べて外気3のエンタルピーが高いので、前室熱交換器114のみ顕熱交換し、熱媒体の噴霧による湿度の上昇を防止する運転を行い、熱回収ユニット2では供給する熱媒体に比べて排気5のエンタルピーが低いので、前室熱交換器14および後室熱交換器115で全熱交換する運転を行う。つまり、図5(b)の空気線図に示すように、中間期モード(冷房負荷時)では外気3の乾球温度(OA,DB)と排気5の湿球温度(RA,WB)との温度差を大きくして運転できる。   Further, the front chamber heat exchanger 14 of the heat recovery processing unit 2 operates in the same manner as in the summer mode. That is, since the enthalpy of the outside air 3 is higher in the outside air processing unit 1 than the heat medium supplied, only the front chamber heat exchanger 114 is subjected to sensible heat exchange, and an operation for preventing an increase in humidity due to spraying of the heat medium is performed. In the recovery unit 2, the enthalpy of the exhaust 5 is lower than that of the heat medium to be supplied. That is, as shown in the air diagram of FIG. 5B, in the intermediate period mode (at the time of cooling load), the dry bulb temperature (OA, DB) of the outside air 3 and the wet bulb temperature (RA, WB) of the exhaust 5 Can operate with a large temperature difference.

図3は中間期モード(暖房負荷時)の運転状態を示しており、外気処理ユニット1の前室熱交換器114は、連絡管路127の三方弁128が熱交換部120の熱媒体出口122bと前室ノズル121とを連通し、内部戻り管路129に対して遮断する状態にあり、熱交換部120を通った熱媒体が前室ノズル121から熱交換部120へ噴霧された後に前室貯留槽116へ至る湿式の全熱交換器として運転する。後室熱交換器115は、外部戻り管路130の三方弁130aを後室ノズル124に対して連通し、バイパス管路130bに対して遮断する状態にあり、全熱交換器として運転する。   FIG. 3 shows an operation state in the intermediate period mode (at the time of heating load). In the front chamber heat exchanger 114 of the outside air processing unit 1, the three-way valve 128 of the communication pipe 127 is the heat medium outlet 122 b of the heat exchanger 120. And the front chamber nozzle 121 are in communication with each other and are blocked from the internal return pipe 129, and the heat medium that has passed through the heat exchange unit 120 is sprayed from the front chamber nozzle 121 to the heat exchange unit 120. It operates as a wet total heat exchanger leading to the storage tank 116. The rear chamber heat exchanger 115 communicates the three-way valve 130a of the external return line 130 with the rear chamber nozzle 124 and shuts off the bypass line 130b, and operates as a total heat exchanger.

また、熱回収処理ユニット2の前室熱交換器14は、連絡管路27の三方弁28が熱交換部20の熱媒体出口22bと内部戻り管路29とを連通し、前室ノズル21に対して遮断する状態にあり、熱交換部20を通った熱媒体が内部戻り管路29を通って前室貯留槽16へ至る乾式の顕熱交換器として運転し、開閉弁32を閉栓して予前ノズル25への供給を遮断する。   Further, in the front chamber heat exchanger 14 of the heat recovery processing unit 2, the three-way valve 28 of the communication pipe line 27 communicates the heat medium outlet 22 b of the heat exchange unit 20 and the internal return pipe line 29 to the front chamber nozzle 21. The heat medium that has passed through the heat exchanger 20 is operated as a dry sensible heat exchanger that passes through the internal return pipe 29 to the front chamber storage tank 16, and the on-off valve 32 is closed. The supply to the preliminary nozzle 25 is shut off.

すなわち、外気処理ユニット1では供給する熱媒体に比べて外気3のエンタルピーが低いので、前室熱交換器114で全熱交換し、後室熱交換器115で全熱交換する運転を行い、熱回収ユニット2では供給する熱媒体に比べて排気5のエンタルピーが高いので、前室熱交換器14で顕熱交換し、後室熱交換器15で全熱交換する運転を行う。   That is, since the enthalpy of the outside air 3 is lower in the outside air processing unit 1 than the heat medium to be supplied, the total heat exchange is performed by the front chamber heat exchanger 114 and the total heat exchange is performed by the rear chamber heat exchanger 115, Since the enthalpy of the exhaust 5 is higher in the recovery unit 2 than the heat medium to be supplied, an operation is performed in which sensible heat is exchanged in the front chamber heat exchanger 14 and total heat is exchanged in the rear chamber heat exchanger 15.

この中間期モード(暖房負荷時)では、外気処理ユニット1の前室熱交換器114および後室熱交換器115で外気3を昇温する。例えば、DB(乾球温度)3℃/WB(湿球温度)0℃の外気3がDB(乾球温度)9.5℃/WB(湿球温度)9.5℃の給気4となり、外部熱交換部7から出る11.7℃の熱媒体が6.7℃で戻ってくる。   In this intermediate period mode (at the time of heating load), the outside air 3 is heated by the front chamber heat exchanger 114 and the rear chamber heat exchanger 115 of the outside air processing unit 1. For example, the outside air 3 with DB (dry bulb temperature) 3 ° C./WB (wet bulb temperature) 0 ° C. becomes the supply air 4 with DB (dry bulb temperature) 9.5 ° C./WB (wet bulb temperature) 9.5 ° C., The 11.7 ° C. heat medium coming out of the external heat exchanging section 7 returns at 6.7 ° C.

また、熱回収処理ユニット2の前室熱交換器14および後室熱交換器15で排気5から熱を奪い、熱媒体を加熱する。例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)9.0℃/WB(湿球温度)9.0℃の空気となり、外部熱交換部7から出る7.7℃の熱媒体が12.7℃で戻ってくる。   Further, the front chamber heat exchanger 14 and the rear chamber heat exchanger 15 of the heat recovery processing unit 2 take heat from the exhaust 5 to heat the heat medium. For example, the exhaust 5 with DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) 16 ° C. becomes air with DB (dry bulb temperature) 9.0 ° C./WB (wet bulb temperature) 9.0 ° C., and external heat The heat medium at 7.7 ° C. coming out of the exchange unit 7 returns at 12.7 ° C.

この中間期モード(暖房負荷時)では、図5(c)の空気線図に示すように、外気3の湿球温度(OA,WB)と排気5の乾球温度(RA,DB)との温度差を大きくして運転できる。   In this intermediate period mode (at the time of heating load), as shown in the air diagram of FIG. 5C, the wet bulb temperature (OA, WB) of the outside air 3 and the dry bulb temperature (RA, DB) of the exhaust 5 Can operate with a large temperature difference.

図4は冬モード(ピーク時)の運転状態を示しており、外気処理ユニット1の前室熱交換器114は、連絡管路127の三方弁128が熱交換部120の熱媒体出口122bと前室ノズル121を遮断し、内部戻り管路129に対して連通する状態にあり、熱交換部120を乾式の顕熱交換器として運転する。後室熱交換器115は、外部戻り管路130の三方弁130aを後室ノズル124に対して連通し、バイパス管路130bに対して遮断する状態にあり、全熱交換器として運転する。   FIG. 4 shows the operation state in the winter mode (peak time). In the front chamber heat exchanger 114 of the outside air processing unit 1, the three-way valve 128 of the communication pipe 127 is connected to the front of the heat medium outlet 122b of the heat exchanger 120. The chamber nozzle 121 is shut off and communicated with the internal return pipe 129, and the heat exchanging unit 120 is operated as a dry sensible heat exchanger. The rear chamber heat exchanger 115 communicates the three-way valve 130a of the external return line 130 with the rear chamber nozzle 124 and shuts off the bypass line 130b, and operates as a total heat exchanger.

また、熱回収処理ユニット2の前室熱交換器14は、連絡管路27の三方弁28が熱交換部20の熱媒体出口22bと内部戻り管路29とを連通し、前室ノズル21に対して遮断する状態にあり、熱交換部20を通った熱媒体が内部戻り管路29を通って前室貯留槽16へ至る乾式の顕熱交換器として運転し、開閉弁32を閉栓して予前ノズル25への供給を遮断する。   Further, in the front chamber heat exchanger 14 of the heat recovery processing unit 2, the three-way valve 28 of the communication pipe line 27 communicates the heat medium outlet 22 b of the heat exchange unit 20 and the internal return pipe line 29 to the front chamber nozzle 21. The heat medium that has passed through the heat exchanger 20 is operated as a dry sensible heat exchanger that passes through the internal return pipe 29 to the front chamber storage tank 16, and the on-off valve 32 is closed. The supply to the preliminary nozzle 25 is shut off.

すなわち、外気処理ユニット1では外気3の湿球温度がマイナスとなり、凍結する場合があるので、前室熱交換器114で顕熱交換し、後室熱交換器115で全熱交換する運転を行い、熱回収ユニット2では供給する熱媒体に比べて排気5のエンタルピーが高いので、前室熱交換器14で顕熱交換し、後室熱交換器115で全熱交換する運転を行う。   That is, in the outside air processing unit 1, the wet bulb temperature of the outside air 3 becomes negative and may freeze. Therefore, the sensible heat exchange is performed in the front chamber heat exchanger 114 and the total heat exchange is performed in the rear chamber heat exchanger 115. In the heat recovery unit 2, the enthalpy of the exhaust 5 is higher than that of the heat medium to be supplied. Therefore, the sensible heat exchange is performed in the front chamber heat exchanger 14 and the total heat exchange is performed in the rear chamber heat exchanger 115.

この冬モードでは、外気処理ユニット1の前室熱交換器114および後室熱交換器115で外気3を昇温する。例えば、DB(乾球温度)−2℃/WB(湿球温度)−5℃の外気3がDB(乾球温度)7.0℃/WB(湿球温度)6.7℃の給気4となり、外部熱交換部7から出る10.1℃の熱媒体が5.1℃で戻ってくる。   In this winter mode, the outside air 3 is heated by the front chamber heat exchanger 114 and the rear chamber heat exchanger 115 of the outside air processing unit 1. For example, the outside air 3 of DB (dry bulb temperature) -2 ° C./WB (wet bulb temperature) -5 ° C. is supplied air 4 of DB (dry bulb temperature) 7.0 ° C./WB (wet bulb temperature) 6.7 ° C. Thus, the 10.1 ° C. heat medium exiting from the external heat exchanging section 7 returns at 5.1 ° C.

また、熱回収処理ユニット2の前室熱交換器14および後室熱交換器15で排気5から熱を奪い、熱媒体を加熱する。例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)7.1℃/WB(湿球温度)7.1℃の空気となり、外部熱交換部7から出る6.1℃の熱媒体が12.1℃で戻ってくる。   Further, the front chamber heat exchanger 14 and the rear chamber heat exchanger 15 of the heat recovery processing unit 2 take heat from the exhaust 5 to heat the heat medium. For example, the exhaust 5 with DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) 16 ° C. becomes air with DB (dry bulb temperature) 7.1 ° C./WB (wet bulb temperature) 7.1 ° C., and external heat The heat medium of 6.1 ° C. coming out of the exchange unit 7 returns at 12.1 ° C.

この冬モードでは、図5(d)の空気線図に示すように、外気3の乾球温度(OA,DB)と排気5の乾球温度(RA,DB)との温度差において運転できる。
図7は本発明の他の実施の形態を示すものであり、図1に示した先の実施の形態と異なる点は以下の点である。
In this winter mode, the vehicle can be operated at a temperature difference between the dry bulb temperature (OA, DB) of the outside air 3 and the dry bulb temperature (RA, DB) of the exhaust 5 as shown in the air diagram of FIG.
FIG. 7 shows another embodiment of the present invention. The points different from the previous embodiment shown in FIG. 1 are as follows.

熱回収ユニット2では、気体入口8および気体出口10がユニット上部に位置し、通気口13が隔壁12の下部側に位置する。また、予前ノズル25、開閉弁32、内部循環管路33を設けておらず、外気処理ユニット1では外部戻り管路130の途中に設ける三方弁130aおよびバイパス管路130bは設けていない。   In the heat recovery unit 2, the gas inlet 8 and the gas outlet 10 are located at the upper part of the unit, and the vent hole 13 is located at the lower side of the partition wall 12. Further, the preliminary nozzle 25, the on-off valve 32, and the internal circulation line 33 are not provided, and the outside air processing unit 1 does not have the three-way valve 130a and the bypass line 130b provided in the middle of the external return line 130.

この構成においては、基本的に先の実施の形態と同様の運転を行うことができ、中間期モード(冷房負荷時)がなく、夏モードにおいて対処するものであり、空気の流れの後半部分で後室24により対向する向きに噴霧するので熱交換効率が向上する。   In this configuration, basically the same operation as the previous embodiment can be performed, there is no intermediate period mode (at the time of cooling load), and the summer mode is dealt with, and in the latter half of the air flow Since it sprays in the direction which opposes by the back chamber 24, heat exchange efficiency improves.

図8は本発明の他の実施の形態を示すものであり、図1に示した先の実施の形態と異なる点は以下の点である。
外気処理ユニット201は、気体入口202から導入する外気3を気体出口203から排出する処理室204を有し、処理室204の内部に外気熱交換部205を外気3の流れ方向に沿って多段に配置しており、各外気熱交換部205を連絡管路206で接続し、外気3の流れ方向で最下流の外気熱交換部205に熱回収ユニット2の外部送り管路31を接続し、外気3の流れ方向で最上流の外気熱交換部205に熱回収ユニット2の外部戻り管路30を接続している。
FIG. 8 shows another embodiment of the present invention, and the following points are different from the previous embodiment shown in FIG.
The outside air processing unit 201 has a processing chamber 204 that discharges the outside air 3 introduced from the gas inlet 202 from the gas outlet 203, and the outside air heat exchanging unit 205 is multi-staged along the flow direction of the outside air 3 inside the processing chamber 204. The outside air heat exchanging units 205 are connected by connecting pipes 206, and the external feed pipe 31 of the heat recovery unit 2 is connected to the most downstream outside air heat exchanging unit 205 in the flow direction of the outside air 3. The external return pipe 30 of the heat recovery unit 2 is connected to the most upstream outdoor air heat exchanger 205 in the flow direction 3.

また、最下流位置の外気熱交換部205を除いて外気熱交換部205の下流位置には気化式加湿器209を設けており、気化式加湿器209は気体入口202の下流位置にも設けている。各気化式加湿器209には開閉弁210を介して給水管路211が連通している。   In addition, a vaporizing humidifier 209 is provided at a downstream position of the outdoor air heat exchanging unit 205 except for the outdoor air heat exchanging unit 205 at the most downstream position, and the vaporizing humidifier 209 is also provided at a downstream position of the gas inlet 202. Yes. A water supply pipe 211 communicates with each vaporizing humidifier 209 via an on-off valve 210.

上記した構成により、外気処理ユニット201において、気体入口202から処理室204へ流入する外気3は、各外気熱交換部205を通過し、気体出口203から給気ファン装置136に流入し、給気ファン装置136から空調対象系へ給気4として供給する。   With the configuration described above, in the outside air processing unit 201, the outside air 3 flowing into the processing chamber 204 from the gas inlet 202 passes through each outside air heat exchanging unit 205 and flows into the supply fan device 136 from the gas outlet 203. The air supply 4 is supplied from the fan device 136 to the air-conditioning target system.

熱回収ユニット2において、空調対象系から気体入口8を通して前室9へ流入する排気5は、前室熱交換器14を下方から上方へ通過し、隔壁12の上部の通気口13を通って後室11へ流入し、後室熱交換器15を上方から下方へ通過し、気体出口10から排気ファン装置36に流入し、排気ファン装置36から大気6へ排出する。   In the heat recovery unit 2, the exhaust 5 flowing into the front chamber 9 from the air-conditioning target system through the gas inlet 8 passes through the front chamber heat exchanger 14 from below to above and passes through the vent 13 at the top of the partition wall 12. The air flows into the chamber 11, passes through the rear chamber heat exchanger 15 from the upper side to the lower side, flows into the exhaust fan device 36 from the gas outlet 10, and is discharged from the exhaust fan device 36 to the atmosphere 6.

次に、熱媒体の流れを説明する。図8は夏モードの運転状態を示している。この夏モードでは、外気処理ユニット201において開閉弁210を全て閉栓して各気化式加湿器209における加湿を停止する。熱回収ユニット2においては、図1に示した先の実施の形態での夏モードと同様の運転を行う。   Next, the flow of the heat medium will be described. FIG. 8 shows the operation state in the summer mode. In this summer mode, all the on-off valves 210 are closed in the outside air processing unit 201, and humidification in each vaporizing humidifier 209 is stopped. In the heat recovery unit 2, the same operation as in the summer mode in the previous embodiment shown in FIG. 1 is performed.

このため、外気処理ユニット201では冷却除湿運転となり、例えば、DB(乾球温度)32℃/WB(湿球温度)27℃の外気3がDB(乾球温度)22.6℃/WB(湿球温度)22.6℃の給気4となって空調対象系へ供給され、熱回収ユニット2から出る20.5℃の熱媒体が26.2℃で戻ってくる。   For this reason, the outside air processing unit 201 performs a cooling and dehumidifying operation. For example, the outside air 3 with DB (dry bulb temperature) 32 ° C./WB (wet bulb temperature) 27 ° C. is DB (dry bulb temperature) 22.6 ° C./WB (wet). Ball temperature) The air supply 4 of 22.6 ° C. is supplied to the air-conditioning system, and the 20.5 ° C. heat medium coming out of the heat recovery unit 2 returns at 26.2 ° C.

熱回収ユニット2では前室熱交換器14および後室熱交換器15を全熱交換運転する状態となり、例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)23.2℃/WB(湿球温度)23.2℃の空気となって大気6へ排出され、外気処理ユニット201から出る26.2℃の熱媒体が20.5℃で戻ってくる。   In the heat recovery unit 2, the front chamber heat exchanger 14 and the rear chamber heat exchanger 15 are in a state of total heat exchange operation. For example, an exhaust 5 with DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) 16 ° C. DB (dry bulb temperature) 23.2 ° C./WB (wet bulb temperature) 23.2 ° C. air is discharged to the atmosphere 6, and the 26.2 ° C. heat medium exiting the outside air processing unit 201 is 20.5 ° C. Come back in.

この夏モードでは、図11(a)の空気線図に示すように、外気3の乾球温度(OA,DB)と排気5の湿球温度(RA,DB)との大きな温度差において運転できる。
図9は中間期モード(暖房負荷時)の運転状態を示しており、外気処理ユニット201において開閉弁210を全て開栓して各気化式加湿器209において加湿する。熱回収ユニット2においては、図3に示した先の実施の形態での中間期モード(暖房負荷時)と同様の運転を行う。
In this summer mode, as shown in the air diagram of FIG. 11A, the operation can be performed at a large temperature difference between the dry bulb temperature (OA, DB) of the outside air 3 and the wet bulb temperature (RA, DB) of the exhaust 5. .
FIG. 9 shows an operation state in the intermediate period mode (at the time of heating load). In the outside air processing unit 201, all the on-off valves 210 are opened, and each vaporizing humidifier 209 is humidified. In the heat recovery unit 2, an operation similar to that in the intermediate period mode (at the time of heating load) in the previous embodiment shown in FIG. 3 is performed.

このため、外気処理ユニット201では全熱交換運転となり、例えば、DB(乾球温度)3℃/WB(湿球温度)0℃の外気3がDB(乾球温度)13.0℃/WB(湿球温度)9.5℃の給気4となって空調対象系へ供給され、熱回収ユニット2から出る11.7℃の熱媒体が6.7℃で戻ってくる。   For this reason, in the outside air processing unit 201, the total heat exchange operation is performed. For example, the outside air 3 with DB (dry bulb temperature) 3 ° C./WB (wet bulb temperature) 0 ° C. is DB (dry bulb temperature) 13.0 ° C./WB ( Wet bulb temperature) 9.5 ° C. air supply 4 is supplied to the air-conditioning system, and the 11.7 ° C. heat medium coming out of the heat recovery unit 2 returns at 6.7 ° C.

熱回収ユニット2では前室熱交換器14を顕熱交換運転し、後室熱交換器15を全熱交換運転する状態となり、例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)9.0℃/WB(湿球温度)9.0℃の空気となって大気6へ排出され、外気処理ユニット201から出る6.7℃の熱媒体が11.7℃で戻ってくる。   In the heat recovery unit 2, the front chamber heat exchanger 14 is subjected to sensible heat exchange operation, and the rear chamber heat exchanger 15 is subjected to total heat exchange operation. For example, DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) Exhaust 5 at 16 ° C. becomes air at DB (dry bulb temperature) 9.0 ° C./WB (wet bulb temperature) 9.0 ° C. and is discharged to the atmosphere 6, and heat at 6.7 ° C. from the outside air processing unit 201 The medium returns at 11.7 ° C.

中間期モード(暖房負荷時)では、図11(b)の空気線図に示すように、各気化式加湿器209での加湿と、各外気熱交換部205での加温を繰り返し、外気3の湿球温度(OA,WB)と排気5の乾球温度(RA,DB)との大きな温度差において運転できる。   In the intermediate period mode (at the time of heating load), as shown in the air diagram of FIG. 11B, humidification in each vaporizing humidifier 209 and heating in each outdoor air heat exchanging unit 205 are repeated, and the outside air 3 The wet bulb temperature (OA, WB) and the exhaust bulb 5 dry bulb temperature (RA, DB) can be operated at a large temperature difference.

図10は冬モードの運転状態を示しており、外気処理ユニット201においては、外気3の湿球温度がマイナスとなり、凍結する場合があるので、最上流位置の各気化式加湿器209に対応する開閉弁210のみを閉栓し、他の各気化式加湿器209において加湿する。熱回収ユニット2においては、図4に示した先の実施の形態での冬モードと同様の運転を行う。   FIG. 10 shows the operation state in the winter mode. In the outside air processing unit 201, the wet bulb temperature of the outside air 3 becomes negative and may freeze, so that it corresponds to each vaporizing humidifier 209 at the most upstream position. Only the on-off valve 210 is closed and humidified in each other vaporizing humidifier 209. In the heat recovery unit 2, the same operation as in the winter mode in the previous embodiment shown in FIG. 4 is performed.

このため、外気処理ユニット201では全熱交換運転となり、例えば、DB(乾球温度)−2℃/WB(湿球温度)−5℃の外気3がDB(乾球温度)10.0℃/WB(湿球温度)6.7℃の給気4となって空調対象系へ供給され、熱回収ユニット2から出る10.1℃の熱媒体が5.1℃で戻ってくる。   For this reason, in the outside air processing unit 201, the total heat exchange operation is performed. For example, the outside air 3 of DB (dry bulb temperature) -2 ° C./WB (wet bulb temperature) -5 ° C. is DB (dry bulb temperature) 10.0 ° C. / The supply air 4 of WB (wet bulb temperature) 6.7 ° C. is supplied to the air-conditioning target system, and the 10.1 ° C. heat medium coming out of the heat recovery unit 2 returns at 5.1 ° C.

熱回収ユニット2では前室熱交換器14を顕熱交換運転し、後室熱交換器15を全熱交換運転する状態となり、例えば、DB(乾球温度)23℃/WB(湿球温度)16℃の排気5がDB(乾球温度)7.1℃/WB(湿球温度)7.1℃の空気となって大気6へ排出され、外気処理ユニット201から出る5.1℃の熱媒体が10.1℃で戻ってくる。   In the heat recovery unit 2, the front chamber heat exchanger 14 is subjected to sensible heat exchange operation, and the rear chamber heat exchanger 15 is subjected to total heat exchange operation. For example, DB (dry bulb temperature) 23 ° C./WB (wet bulb temperature) The exhaust 5 at 16 ° C. becomes air at 7.1 ° C./WB (wet bulb temperature) 7.1 ° C./WB (wet bulb temperature) 7.1 ° C. and is discharged to the atmosphere 6, and the 5.1 ° C. heat emitted from the outside air processing unit 201. The medium returns at 10.1 ° C.

この冬モードでは、図11(c)の空気線図に示すように、凍結を回避しながら各気化式加湿器209での加湿と、各外気熱交換部205での加温を繰り返し、外気3の乾球温度(OA,DB)と排気5の乾球温度(RA,DB)との温度差において運転できる。   In this winter mode, as shown in the air diagram of FIG. 11 (c), humidification in each vaporizing humidifier 209 and warming in each outdoor air heat exchanging unit 205 are repeated while avoiding freezing. Can be operated at a temperature difference between the dry bulb temperature (OA, DB) and the dry bulb temperature (RA, DB) of the exhaust 5.

図12は本発明の他の実施の形態を示すものであり、図8に示した先の実施の形態と異なる点は以下の点である。
熱回収ユニット2では、気体入口8および気体出口10がユニット上部に位置し、通気口13が隔壁12の下部側に位置する。また、予前ノズル25、開閉弁32、内部循環管路33を設けていない。
FIG. 12 shows another embodiment of the present invention, and the following points are different from the previous embodiment shown in FIG.
In the heat recovery unit 2, the gas inlet 8 and the gas outlet 10 are located at the upper part of the unit, and the vent hole 13 is located at the lower side of the partition wall 12. Further, the preliminary nozzle 25, the on-off valve 32, and the internal circulation line 33 are not provided.

この構成においては、基本的に先の実施の形態と同様の運転を行うことができ、空気の流れの後半部分で後室24により対向する向きに噴霧するので熱交換効率が向上する。
図13に示すように、外気処理ユニットと熱回収ユニットとの間において外部熱交換部で熱交換を行うことも可能である。
In this configuration, basically the same operation as in the previous embodiment can be performed, and spraying is performed in the opposite direction by the rear chamber 24 in the latter half of the air flow, so that the heat exchange efficiency is improved.
As shown in FIG. 13, it is also possible to exchange heat between the outside air processing unit and the heat recovery unit in the external heat exchange unit.

この場合には、後室ノズル24に接続した熱回収ユニット用の外部戻り管路19と、前室貯留槽16に連通する熱回収ユニット用の外部送り管路31とを外部熱交換部7を介して接続する。また、外気熱交換部209の熱媒体入口に外気処理ユニット用の外部戻り管路207を接続し、この外部戻り管路207と外気熱交換部209の熱媒体出口に接続する外気処理ユニット用の外部送り管路208とを外部熱交換部7を介して接続する。   In this case, the external return line 19 for the heat recovery unit connected to the rear chamber nozzle 24 and the external feed line 31 for the heat recovery unit communicating with the front chamber storage tank 16 are connected to the external heat exchanger 7. Connect through. In addition, an external return pipe 207 for the outside air processing unit is connected to the heat medium inlet of the outside air heat exchanging unit 209, and the outside air processing unit for the outside air processing unit connected to the external return pipe 207 and the heat medium outlet of the outside air heat exchanging part 209 is connected. The external feed pipe 208 is connected via the external heat exchange unit 7.

本発明の実施の形態における空気調和機の夏モードの運転状態を示す模式図The schematic diagram which shows the driving | running state of the summer mode of the air conditioner in embodiment of this invention 同実施の形態における空気調和機の中間期モード(冷房負荷時)の運転状態を示す模式図The schematic diagram which shows the driving | running state of the interim mode (at the time of cooling load) of the air conditioner in the embodiment 同実施の形態における空気調和機の中間期モード(暖房負荷時)の運転状態を示す模式図The schematic diagram which shows the driving | running state of the intermediate period mode (at the time of heating load) of the air conditioner in the embodiment 同実施の形態における空気調和機の冬モードの運転状態を示す模式図The schematic diagram which shows the driving | running state of the winter mode of the air conditioner in the embodiment 同実施の形態における空気調和機の各モードにおける空気線図Air diagram in each mode of the air conditioner in the same embodiment 従来の空気調和機における空気線図Air line diagram for conventional air conditioners 本発明の他の実施の形態における空気調和機の構成を示す模式図The schematic diagram which shows the structure of the air conditioner in other embodiment of this invention. 本発明の他の実施の形態における空気調和機の構成を示し、その夏モードの運転状態を示す模式図The schematic diagram which shows the structure of the air conditioner in other embodiment of this invention, and shows the driving | running state of the summer mode 同実施の形態における空気調和機の中間期モード(暖房負荷時)の運転状態を示す模式図The schematic diagram which shows the driving | running state of the intermediate period mode (at the time of heating load) of the air conditioner in the embodiment 同実施の形態における空気調和機の冬モードの運転状態を示す模式図The schematic diagram which shows the driving | running state of the winter mode of the air conditioner in the embodiment 同実施の形態における空気調和機の各モードにおける空気線図Air diagram in each mode of the air conditioner in the same embodiment 本発明の他の実施の形態における空気調和機の構成を示す模式図The schematic diagram which shows the structure of the air conditioner in other embodiment of this invention. 本発明の他の実施の形態における空気調和機の構成を示す模式図The schematic diagram which shows the structure of the air conditioner in other embodiment of this invention.

符号の説明Explanation of symbols

1 外気処理ユニット
2 熱回収ユニット
3 外気
4 給気
5 排気(還気)
6 大気
7 外部熱交換部
8、108 気体入口
9、109 前室
10、110 気体出口
11、111 後室
12、112 隔壁
13、113 通気口
14、114 前室熱交換器
15、115 後室熱交換器
16、116 前室貯留槽
17、117 後室貯留槽
18、118 通水孔
19、119 熱媒体供給管路系
20、120 熱交換部
21、121 前室ノズル
22a、122a 熱媒体入口
22b,122b 熱媒体出口
23、123 気液接触メディア
24、124 後室ノズル
25 予前ノズル
26、126 内部送り管路
26a、126a ポンプ
27、127 連絡管路
28、128 三方弁
29、129 内部戻り管路
30、130 外部戻り管路
130a 三方弁
130b バイパス管路
31、131 外部送り管路
31a、131a ポンプ
32 開閉弁
33 内部循環管路
34、134 オーバーフロー管
35、135 補給水管路
36 排気ファン装置
136 給気ファン装置
201 外気処理ユニット
202 気体入口
203 気体出口
204 処理室
205 外気熱交換部
206 連絡管路
209 気化式加湿器
210 開閉弁
211 給水管路
1 Outside air treatment unit 2 Heat recovery unit 3 Outside air 4 Supply air 5 Exhaust air (return air)
6 Atmosphere 7 External heat exchanger 8, 108 Gas inlet 9, 109 Front chamber 10, 110 Gas outlet 11, 111 Rear chamber 12, 112 Partition 13, 113 Vent 14, 114 Front chamber heat exchanger 15, 115 Rear chamber heat Exchanger 16, 116 Front chamber storage tank 17, 117 Rear chamber storage tank 18, 118 Water flow hole 19, 119 Heat medium supply line system 20, 120 Heat exchange section 21, 121 Front chamber nozzle 22a, 122a Heat medium inlet 22b 122b Heat medium outlet 23, 123 Gas-liquid contact medium 24, 124 Rear chamber nozzle 25 Pre-nozzle 26, 126 Internal feed line 26a, 126a Pump 27, 127 Connecting line 28, 128 Three-way valve 29, 129 Internal return pipe Lines 30, 130 External return line 130a Three-way valve 130b Bypass lines 31, 131 External feed lines 31a, 131a Pump 32 On-off valve 3 Internal circulation pipes 34, 134 Overflow pipes 35, 135 Supply water pipe 36 Exhaust fan device 136 Air supply fan device 201 Outside air processing unit 202 Gas inlet 203 Gas outlet 204 Processing chamber 205 Outside air heat exchanging unit 206 Communication pipe 209 Vaporizing humidification 210 On-off valve 211 Water supply pipeline

Claims (8)

気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽と、前室熱交換器および後室熱交換器に熱媒体を供給する熱媒体供給手段とで処理ユニットを構成し、
前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる熱交換部と、熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を熱交換部の熱媒体入口に接続し、前室ノズルと熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、
後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の外部戻り管路を接続し、基端が前室貯留槽に連通する外部送り管路と外部戻り管路とを外部熱交換部を介して接続してなることを特徴とする空気調和機。
The front chamber for introducing the target gas from the gas inlet, the rear chamber for discharging the target gas flowing in from the front chamber from the gas outlet, the front chamber heat exchanger disposed in the front chamber, and the rear chamber heat exchange disposed in the rear chamber And a heat medium supply means for supplying a heat medium to the front chamber heat exchanger and the rear chamber heat exchanger, and the front chamber storage tank and the rear chamber storage tank disposed in the lower part of each of the front chamber and the rear chamber Configure the unit,
The front chamber heat exchanger has a heat exchange section in which the heat medium flows countercurrently to the flow of the target gas, and a front chamber nozzle that sprays the heat medium on the heat exchange section, and the base end is a rear chamber storage tank. Connect the internal feed line of the heat medium supply means communicating with the heat medium inlet of the heat exchanging part, connect the front chamber nozzle and the heat medium outlet of the heat exchanging part with a connecting line, and in the middle of the connecting line The internal return pipe of the heat medium supply means is connected via the pipe switching means, and the tip of the internal return pipe is connected to the front chamber storage tank,
The rear chamber heat exchanger has a gas-liquid contact medium and a rear chamber nozzle that sprays the heat medium on the gas-liquid contact medium, and connects the external return pipe of the heat medium supply means to the rear chamber nozzle. An air conditioner comprising: an external feed line communicating with the front chamber storage tank and an external return line connected via an external heat exchange unit.
一対の処理ユニットを備え、一方の処理ユニットが対象気体として外気を系内に導入する外気処理ユニットをなし、他方の処理ユニットが対象気体として排気を系外へ排出する熱回収ユニットをなし、外部熱交換部において外気処理ユニットと熱回収ユニットとの熱交換を行うことを特徴とする請求項1に記載の空気調和機。   It has a pair of processing units, one processing unit is an outside air processing unit that introduces outside air as a target gas into the system, and the other processing unit is a heat recovery unit that discharges exhaust as a target gas outside the system, The air conditioner according to claim 1, wherein heat exchange between the outside air processing unit and the heat recovery unit is performed in the heat exchange unit. 外気処理ユニットは、後室ノズルに接続する熱媒体供給手段の外部戻り管路が途中に設ける管路切り替え手段を介して熱媒体供給手段のバイパス管路に接続し、バイパス管路の先端を後室貯留槽に接続してなることを特徴とする請求項2に記載の空気調和機。   The outside air processing unit is connected to the bypass conduit of the heat medium supplying means via the conduit switching means provided in the middle of the external return conduit of the heat medium supplying means connected to the rear chamber nozzle, and the front end of the bypass conduit is arranged at the rear. The air conditioner according to claim 2, wherein the air conditioner is connected to a chamber storage tank. 対象気体として外気を系内に導入する外気処理ユニットと、対象気体として排気を系外へ排出する熱回収ユニットを有し、
熱回収ユニットは、気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽と、前室熱交換器と後室熱交換器に熱媒体を供給する熱媒体供給手段とを備え、
前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる排気熱交換部と、排気熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を排気熱交換部の熱媒体入口に接続し、前室ノズルと排気熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、
後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の外部戻り管路を接続し、基端が前室貯留槽に連通する熱媒体供給手段の外部送り管路と外部戻り管路とを外気処理ユニットを介して接続してなり、
外気処理ユニットは、気体入口から導入する対象気体を気体出口から排出する処理室を有し、処理室内に外気熱交換部を対象気体の流れ方向に沿って多段に配置し、各外気熱交換部を連絡管路で接続し、対象気体の流れ方向で最下流の外気熱交換部の熱媒体入口に熱回収ユニットの外部送り管路を接続し、外気熱交換部の熱媒体出口に熱回収ユニットの外部戻り管路を接続したことを特徴とする空気調和機。
An outside air processing unit that introduces outside air into the system as a target gas, and a heat recovery unit that discharges exhaust gas outside the system as a target gas,
The heat recovery unit is arranged in the front chamber for introducing the target gas from the gas inlet, the rear chamber for discharging the target gas flowing in from the front chamber from the gas outlet, the front chamber heat exchanger disposed in the front chamber, and the rear chamber. A rear chamber heat exchanger, a front chamber storage tank and a rear chamber storage tank disposed in the lower part of each of the front chamber and the rear chamber, and a heat medium for supplying a heat medium to the front chamber heat exchanger and the rear chamber heat exchanger Supply means,
The front chamber heat exchanger has an exhaust heat exchange section in which the heat medium flows countercurrently to the flow of the target gas, and a front chamber nozzle that sprays the heat medium on the exhaust heat exchange section, with a proximal end at the rear chamber The internal feed line of the heat medium supply means communicating with the storage tank is connected to the heat medium inlet of the exhaust heat exchange part, and the front chamber nozzle and the heat medium outlet of the exhaust heat exchange part are connected by a communication line. In the middle of the path, the internal return pipe of the heat medium supply means is connected via the pipe switching means, and the tip of the internal return pipe is connected to the front chamber storage tank,
The rear chamber heat exchanger has a gas-liquid contact medium and a rear chamber nozzle that sprays the heat medium on the gas-liquid contact medium, and connects the external return pipe of the heat medium supply means to the rear chamber nozzle. Is connected to the external feed line and the external return line of the heat medium supply means communicating with the front chamber storage tank through the outside air processing unit,
The outside air processing unit has a processing chamber for discharging the target gas introduced from the gas inlet from the gas outlet, and the outside air heat exchanging units are arranged in multiple stages along the flow direction of the target gas in the processing chamber. Is connected with a connecting pipe, the external feed pipe of the heat recovery unit is connected to the heat medium inlet of the outdoor air heat exchange section located downstream in the flow direction of the target gas, and the heat recovery unit is connected to the heat medium outlet of the external air heat exchange section. An air conditioner characterized by connecting an external return pipe.
対象気体として外気を系内に導入する外気処理ユニットと、対象気体として排気を系外へ排出する熱回収ユニットを有し、外気処理ユニットおよび熱回収ユニットに熱媒体を供給する熱媒体供給手段と、外気処理ユニットと熱回収ユニットとの熱交換を行う外部熱交換部を有し、
熱回収ユニットは、気体入口から対象気体を導入する前室と、前室から流入する対象気体を気体出口から排出する後室と、前室に配置する前室熱交換器と、後室に配置する後室熱交換器と、前室と後室のそれぞれの下部に配置した前室貯留槽および後室貯留槽を備え、
前室熱交換器は、熱媒体が対象気体の流れに対して向流で流れる排気熱交換部と、排気熱交換部に熱媒体を噴霧する前室ノズルとを有し、基端が後室貯留槽に連通する熱媒体供給手段の内部送り管路を排気熱交換部の熱媒体入口に接続し、前室ノズルと排気熱交換部の熱媒体出口とを連絡管路で接続し、連絡管路の途中に管路切り替え手段を介して熱媒体供給手段の内部戻り管路を接続し、内部戻り管路の先端を前室貯留槽に接続してなり、
後室熱交換器は、気液接触メディアと、気液接触メディアに熱媒体を噴霧する後室ノズルとを有し、後室ノズルに熱媒体供給手段の熱回収ユニット用の外部戻り管路を接続し、この外部戻り管路と基端が前室貯留槽に連通する熱媒体供給手段の熱回収ユニット用の外部送り管路とを外部熱交換部を介して接続し、
外気処理ユニットは、気体入口から導入する対象気体を気体出口から排出する処理室を有し、処理室内に外気熱交換部を対象気体の流れ方向に沿って多段に配置し、各外気熱交換部を連絡管路で接続し、対象気体の流れ方向で最下流の外気熱交換部の熱媒体入口に熱媒体供給手段の外気処理ユニット用の外部戻り管路を接続し、この外部戻り管路と対象気体の流れ方向で最上流の外気熱交換部の熱媒体出口に接続する熱媒体供給手段の外気処理ユニット用の外部送り管路とを外部熱交換部を介して接続したことを特徴とする空気調和機。
An outside air processing unit for introducing outside air into the system as a target gas, and a heat medium supply means for supplying a heat medium to the outside air processing unit and the heat recovery unit, having a heat recovery unit for discharging exhaust gas outside the system as a target gas; , Having an external heat exchanging unit for exchanging heat between the outside air processing unit and the heat recovery unit,
The heat recovery unit is arranged in the front chamber for introducing the target gas from the gas inlet, the rear chamber for discharging the target gas flowing in from the front chamber from the gas outlet, the front chamber heat exchanger disposed in the front chamber, and the rear chamber. A rear chamber heat exchanger, a front chamber storage tank and a rear chamber storage tank disposed at the lower part of each of the front chamber and the rear chamber,
The front chamber heat exchanger has an exhaust heat exchange section in which the heat medium flows countercurrently to the flow of the target gas, and a front chamber nozzle that sprays the heat medium on the exhaust heat exchange section, with a proximal end at the rear chamber The internal feed line of the heat medium supply means communicating with the storage tank is connected to the heat medium inlet of the exhaust heat exchange part, and the front chamber nozzle and the heat medium outlet of the exhaust heat exchange part are connected by a communication line. In the middle of the path, the internal return pipe of the heat medium supply means is connected via the pipe switching means, and the tip of the internal return pipe is connected to the front chamber storage tank,
The rear chamber heat exchanger has a gas-liquid contact medium and a rear chamber nozzle that sprays the heat medium on the gas-liquid contact medium. The rear chamber nozzle is provided with an external return line for a heat recovery unit of the heat medium supply means. Connect this external return line and the external feed line for the heat recovery unit of the heat medium supply means whose base end communicates with the front chamber storage tank via the external heat exchange part,
The outside air processing unit has a processing chamber for discharging the target gas introduced from the gas inlet from the gas outlet, and the outside air heat exchanging units are arranged in multiple stages along the flow direction of the target gas in the processing chamber. The external return pipe for the outside air processing unit of the heat medium supply means is connected to the heat medium inlet of the most downstream outside air heat exchanging section in the flow direction of the target gas. It is characterized in that an external feed line for an external air processing unit of the heat medium supply means connected to the heat medium outlet of the uppermost external air heat exchange section in the flow direction of the target gas is connected via an external heat exchange section. Air conditioner.
外気処理ユニットの各外気熱交換部に加湿器を配置したことを特徴とする請求項4又は5に記載の空気調和機。 The air conditioner according to claim 4 or 5, wherein a humidifier is arranged in each outside air heat exchange section of the outside air processing unit. 熱回収ユニットは、前室熱交換器へ流入する前の対象気体に熱媒体を噴霧する予前ノズルを有し、外部送り管路から分岐する内部循環管路を予前ノズルに接続してなることを特徴とする請求項2〜6の何れか1項に記載の空気調和機。   The heat recovery unit has a pre-nozzle for spraying a heat medium onto the target gas before flowing into the front chamber heat exchanger, and an internal circulation pipe branched from the external feed pipe is connected to the pre-nozzle. The air conditioner according to any one of claims 2 to 6, wherein 請求項1から7の何れか1項に記載の空気調和機において、後室熱交換器は、常時、気液接触メディアに後室ノズルから熱媒体を噴霧し、前室熱交換器は対象気体のエンタルピーに応じて連絡管路の途中の管路切り替え手段を操作し、熱交換部を通った熱媒体が前室ノズルから前記熱交換部へ噴霧された後に前室貯留槽へ至る湿式の全熱交換運転と、熱交換部を通った熱媒体が内部戻り管路を通って前室貯留槽へ至る乾式の顕熱交換運転とを切り替えて運転することを特徴とする空気調和機の運転方法。 8. The air conditioner according to claim 1, wherein the rear chamber heat exchanger always sprays the heat medium from the rear chamber nozzle onto the gas-liquid contact medium, and the front chamber heat exchanger is the target gas. In accordance with the enthalpy of the pipe, the pipe switching means in the middle of the connecting pipe is operated, and the heat medium that has passed through the heat exchanging section is sprayed from the front chamber nozzle to the heat exchanging section and then reaches the front chamber storage tank. A method of operating an air conditioner characterized by switching between a heat exchange operation and a dry sensible heat exchange operation in which a heat medium that has passed through a heat exchange section passes through an internal return pipe and reaches a front chamber storage tank. .
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