JP5306751B2 - Vapor compression refrigerator - Google Patents

Vapor compression refrigerator Download PDF

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JP5306751B2
JP5306751B2 JP2008235329A JP2008235329A JP5306751B2 JP 5306751 B2 JP5306751 B2 JP 5306751B2 JP 2008235329 A JP2008235329 A JP 2008235329A JP 2008235329 A JP2008235329 A JP 2008235329A JP 5306751 B2 JP5306751 B2 JP 5306751B2
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condenser
ejector
compressor
tank
cooling water
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JP2010065984A (en
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直樹 松川
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Tlv Co Ltd
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Description

この発明は蒸気圧縮式冷凍機に関し、特に、従来は廃棄されていた温排水からの再蒸発蒸気を利用する蒸気圧縮式冷凍機に関する。   The present invention relates to a vapor compression refrigerator, and more particularly, to a vapor compression refrigerator that uses re-evaporated vapor from warm wastewater that has been conventionally discarded.

冷凍機は、発電機２と吸収冷凍機１０を組み合わせて、発電機２をガスエンジン３で駆動すると共に、ガスエンジン３の排ガスＥＧと、ガスエンジン３を冷却する冷却水ＥＷを、吸収冷凍機１０の熱源として用いるもので、ガスエンジン３の排熱を有効に活用することができるものである。   The refrigerator combines the generator 2 and the absorption refrigerator 10 to drive the generator 2 with the gas engine 3, and absorbs the exhaust gas EG of the gas engine 3 and the cooling water EW for cooling the gas engine 3. 10 is used as a heat source, and the exhaust heat of the gas engine 3 can be effectively utilized.

上記従来の冷凍機では、各種工場やプラントの現場において、ほとんど廃棄されていた比較的温度の低い温排水を有効に活用することができない問題があった。温度の低い温排水であってもいまだ熱エネルギーを保有しており、その量が多くなれば保有している熱エネルギーも大きなものとなり、有効に活用することによって省エネルギーを図ることができる。
特開２００１−１８３０２７号公報 The conventional refrigerator has a problem that it cannot effectively utilize the warm waste water having a relatively low temperature that has been almost discarded in various factories and plant sites. Even warm wastewater with a low temperature still retains thermal energy, and the greater the amount, the greater the thermal energy it possesses, and energy can be saved by making effective use.
JP 2001-183027 A

解決しようとする課題は、温排水の熱エネルギーを有効に活用することのできる蒸気圧縮式冷凍機を得ることである。   The problem to be solved is to obtain a vapor compression refrigerator that can effectively use the thermal energy of hot waste water.

本発明は、圧縮機と凝縮器と膨張弁と蒸発器からなるものにおいて、圧縮機をスクリュー式のコンプレッサとすると共に、当該スクリュー式コンプレッサの入口側に比較的低温度の温排水源を接続して、当該温排水源を、温排水を一旦溜め置く温排水タンクとして、当該温排水タンク内で温排水から再蒸発した蒸気をスクリュー式コンプレッサで圧縮すると共に、凝縮器にエゼクター式真空ポンプを接続して、当該エゼクター式真空ポンプを、エゼクターとタンクと循環ポンプで構成したものである。 The present invention comprises a compressor, a condenser, an expansion valve, and an evaporator. The compressor is a screw-type compressor, and a relatively low-temperature hot waste water source is connected to the inlet side of the screw-type compressor. Then, the hot drainage source is used as a hot drainage tank that temporarily stores hot drainage, and the vapor re-evaporated from the hot drainage in the hot drainage tank is compressed by a screw compressor, and an ejector vacuum pump is connected to the condenser. The ejector vacuum pump is composed of an ejector, a tank, and a circulation pump .

本発明の蒸気圧縮式冷凍機は、圧縮機を比較的低温度の温排水源と接続して、この温排水の再蒸発蒸気を圧縮機で圧縮することによって、温排水の熱エネルギーを有効に活用することのできる蒸気圧縮式冷凍機を得ることができる。   The vapor compression refrigerator of the present invention effectively connects thermal energy of hot wastewater by connecting the compressor to a relatively low temperature hot wastewater source and compressing the re-evaporated steam of the warm wastewater with the compressor. A vapor compression refrigerator that can be utilized can be obtained.

本発明は、圧縮機を温排水源と接続するものであるが、温排水源としては、温排水を一旦溜め置く温排水タンクとして、この温排水タンク内で温排水から再蒸発した蒸気を圧縮機で圧縮することが好適である。   In the present invention, the compressor is connected to a warm drainage source. As the warm drainage source, as a warm drainage tank in which the warm drainage is temporarily stored, the vapor re-evaporated from the warm drainage is compressed in the warm drainage tank. It is preferable to compress with a machine.

図１において、圧縮機１と凝縮器２と膨張弁３と蒸発器４、及び、温排水源としての温排水タンク５とで蒸気圧縮式冷凍機を構成する。   In FIG. 1, a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4, and a warm drainage tank 5 as a warm drainage source constitute a vapor compression refrigerator.

圧縮機１はスクリュー式のコンプレッサを用いて、コンプレッサの入口と温排水タンク５の上部を管路６で接続する。温排水タンク５の左側面に温排水供給管７を接続する。温排水タンク５の右側面にタンク５内の余剰水を排除する余剰水排出管８を接続する。 The compressor 1 uses a screw type compressor, and connects the inlet of the compressor and the upper part of the warm drainage tank 5 by a pipe 6. A warm drainage supply pipe 7 is connected to the left side surface of the warm drainage tank 5. An excess water discharge pipe 8 for removing excess water in the tank 5 is connected to the right side surface of the warm drainage tank 5.

圧縮機１の出口側に管路９を介して凝縮器２と接続する。凝縮器２の内部に管路９がコイル状に配置されて下方の膨張弁３と連通する。凝縮器２には、冷却水供給管１０を接続すると共に、エゼクター式真空ポンプ１１を接続する。エゼクター式真空ポンプ１１は、エゼクター１２とタンク１３と循環ポンプ１４とで構成され、タンク１３内の冷却水を循環ポンプ１４でエゼクター１２へ供給することによって、エゼクター１２で真空吸引力を発生して、凝縮器２の上部と下部から凝縮器２内を吸引して大気圧以下の真空状態に維持し、凝縮器２内で管路９から供給される圧縮蒸気を冷却水が蒸発することによる蒸発潜熱でもって気化冷却することができるものである。   The condenser 1 is connected to the outlet side of the compressor 1 through a pipe 9. A conduit 9 is arranged in a coil shape inside the condenser 2 and communicates with the lower expansion valve 3. The condenser 2 is connected to a cooling water supply pipe 10 and an ejector vacuum pump 11. The ejector type vacuum pump 11 includes an ejector 12, a tank 13, and a circulation pump 14. By supplying the cooling water in the tank 13 to the ejector 12 with the circulation pump 14, the ejector 12 generates a vacuum suction force. Then, the inside of the condenser 2 is sucked from the upper part and the lower part of the condenser 2 to maintain a vacuum state below atmospheric pressure, and the compressed steam supplied from the pipe line 9 in the condenser 2 is evaporated by the cooling water evaporating. It can be vaporized and cooled with latent heat.

凝縮器２の下方に膨張弁３を介して蒸発器４を接続する。蒸発器４には、冷媒供給管１５と排出管１６をそれぞれコイル状に接続する。凝縮器２で冷却された圧縮蒸気は低温水となって膨張弁３から蒸発器４内へ噴射されることで断熱膨張すると共に、冷媒管１５，１６内の冷媒の熱を奪って蒸発することで、冷媒を所定の低温まで冷却することができるものである。蒸発器４内で蒸発した蒸気は、管路１７をとおって再度、圧縮機１へ吸引される。   An evaporator 4 is connected below the condenser 2 via an expansion valve 3. A refrigerant supply pipe 15 and a discharge pipe 16 are connected to the evaporator 4 in a coil shape. The compressed steam cooled by the condenser 2 becomes low-temperature water and is injected into the evaporator 4 from the expansion valve 3 so as to be adiabatically expanded and take away the heat of the refrigerant in the refrigerant pipes 15 and 16 and evaporate. Thus, the refrigerant can be cooled to a predetermined low temperature. The vapor evaporated in the evaporator 4 is again sucked into the compressor 1 through the pipe line 17.

温排水供給管７から温排水タンク５内へ供給された温排水の一部が再度蒸発してタンク５の上部に溜まり、この再蒸発蒸気がスクリュー式コンプレッサ１に吸引されて高圧高温の蒸気となり、管路９をとおって凝縮器２へ送られて冷却されて高圧低温の低温水となって、膨張弁３から蒸発器４へ供給されて冷媒を冷却するための熱源となる。   A part of the warm drainage supplied from the warm drainage supply pipe 7 into the warm drainage tank 5 is evaporated again and collected in the upper part of the tank 5, and this reevaporated steam is sucked into the screw compressor 1 and becomes high-pressure and high-temperature steam. Then, it is sent to the condenser 2 through the conduit 9 and cooled to become high-pressure and low-temperature low-temperature water, which is supplied from the expansion valve 3 to the evaporator 4 and becomes a heat source for cooling the refrigerant.

スクリュー式コンプレッサ１を比較的低温度の温排水タンク５と接続して、この温排水の再蒸発蒸気をスクリュー式コンプレッサ１で圧縮することによって、温排水の保有する熱エネルギーを有効に活用することができる。   By connecting the screw-type compressor 1 to the warm drainage tank 5 having a relatively low temperature and compressing the re-evaporated steam of the warm drainage with the screw-type compressor 1, the thermal energy possessed by the warm drainage can be effectively utilized. Can do.

本発明の蒸気圧縮式冷凍機の実施例を示す構成図。The block diagram which shows the Example of the vapor compression type refrigerator of this invention.

符号の説明Explanation of symbols

１ スクリュー式コンプレッサ
２ 凝縮器
３ 膨張弁
４ 蒸発器
５ 温排水タンク
７ 温排水供給管
１０ 冷却水供給管
１１ エゼクター式真空ポンプ
１２ エゼクター
１３ タンク
１４ 循環ポンプ
１５ 冷媒供給管
１６ 冷媒排出管
DESCRIPTION OF SYMBOLS 1 Screw type compressor 2 Condenser 3 Expansion valve 4 Evaporator 5 Warm drainage tank 7 Warm drainage supply pipe 10 Cooling water supply pipe 11 Ejector type vacuum pump 12 Ejector 13 Tank 14 Circulation pump 15 Refrigerant supply pipe 16 Refrigerant discharge pipe

Claims (1)

圧縮機と凝縮器と膨張弁と蒸発器からなるものにおいて、
前記圧縮機をスクリュー式のコンプレッサとし、
当該スクリュー式コンプレッサの入口側に比較的低温度の温排水源を接続し、
当該温排水源を、温排水を一旦溜め置く温排水タンクとし、
当該温排水タンク内で温排水から再蒸発した蒸気を前記スクリュー式コンプレッサで圧縮し、
前記前記スクリュー式コンプレッサの出口に管路を介して前記凝縮器を接続し、
前記凝縮器の内部に前記管路をコイル状に配置して、前記管路を前記膨張弁と連通させ、
エゼクター式真空ポンプを、エゼクターとタンクと循環ポンプとで構成し、
前記凝縮器に冷却水供給管を接続すると共に、前記エゼクタの吸引口を接続し、
前記タンク内の冷却水を前記循環ポンプで前記エゼクターへ供給することにより前記エゼクターで真空吸引力を発生させて、前記エゼクターにより前記凝縮器内を吸引して大気圧以下の真空状態に維持し、
前記凝縮器内で前記管路から供給される圧縮蒸気を、前記冷却水供給管からの冷却水が蒸発することによる蒸発潜熱でもって気化冷却し、
前記気化冷却した蒸気を用いて、前記膨張弁に接続された前記蒸発器において冷媒を冷却することを特徴とする蒸気圧縮式冷凍機。 In what consists of a compressor, a condenser, an expansion valve and an evaporator,
The compressor is a screw type compressor ,
Connect a relatively low temperature hot drainage source to the inlet side of the screw compressor,
The thermal drainage source is a warm drainage tank that temporarily stores hot drainage,
The vapor re-evaporated from the hot wastewater in the hot wastewater tank is compressed by the screw compressor,
Connecting the condenser via a conduit to the outlet of the screw compressor;
Arranging the pipe line inside the condenser in a coil shape, communicating the pipe line with the expansion valve,
The d Zekuta vacuum pump, constituted by the ejector and the tank and the circulation pump,
A cooling water supply pipe is connected to the condenser, and a suction port of the ejector is connected .
By supplying cooling water in the tank to the ejector with the circulation pump, a vacuum suction force is generated by the ejector, and the inside of the condenser is sucked by the ejector and maintained in a vacuum state below atmospheric pressure,
The compressed steam supplied from the pipe line in the condenser is vaporized and cooled with latent heat of evaporation caused by evaporation of the cooling water from the cooling water supply pipe,
A vapor compression refrigerator that uses the vaporized and cooled steam to cool a refrigerant in the evaporator connected to the expansion valve .
JP2008235329A 2008-09-12 2008-09-12 Vapor compression refrigerator Expired - Fee Related JP5306751B2 (en)

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JP5306751B2 true JP5306751B2 (en) 2013-10-02

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60147067A (en) * 1984-01-10 1985-08-02 協和醗酵工業株式会社 Heat pump
JPS61138057A (en) * 1984-12-10 1986-06-25 株式会社東芝 Heat pump device
JP3510010B2 (en) * 1995-07-14 2004-03-22 株式会社テイエルブイ Vacuum steam heating device
US5603227A (en) * 1995-11-13 1997-02-18 Carrier Corporation Back pressure control for improved system operative efficiency
JPWO2002077546A1 (en) * 2001-03-14 2004-07-15 積水化学工業株式会社 Heat pump and heat pump system
JP2003074994A (en) * 2001-08-28 2003-03-12 Calsonic Kansei Corp Radiator
JP4052867B2 (en) * 2002-04-22 2008-02-27 三建設備工業株式会社 Water refrigerant natural circulation cooling system with water vapor compression refrigerator
JP4133355B2 (en) * 2003-01-15 2008-08-13 株式会社テイエルブイ Steam power generator
JP2006292229A (en) * 2005-04-08 2006-10-26 Mayekawa Mfg Co Ltd Co2 refrigeration cycle device and supercritical refrigeration operation method therefor
JP4457138B2 (en) * 2007-09-28 2010-04-28 株式会社日立製作所 Compressor and heat pump system

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