JP2010065985A - Vapor compression type refrigerating machine - Google Patents

Vapor compression type refrigerating machine Download PDF

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JP2010065985A
JP2010065985A JP2008235330A JP2008235330A JP2010065985A JP 2010065985 A JP2010065985 A JP 2010065985A JP 2008235330 A JP2008235330 A JP 2008235330A JP 2008235330 A JP2008235330 A JP 2008235330A JP 2010065985 A JP2010065985 A JP 2010065985A
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Prior art keywords
ejector
vapor
condenser
warm drainage
evaporator
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JP5312884B2 (en
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Naoki Matsukawa
直樹 松川
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TLV Co Ltd
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TLV Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

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  • Jet Pumps And Other Pumps (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vapor compression type refrigerating machine effectively utilizing heat energy of warm drainage. <P>SOLUTION: A suction opening of a vapor ejector 1 is connected to an upper section of a warm drainage tank 5 through a pipe conduit 6. A condenser 2 is connected to an outlet side of the vapor ejector 1 through a pipe conduit 9. A cooling water supply pipe 10 and an ejector type vacuum pump 11 are connected to the condenser 2. An evaporator 4 is connected to a lower part of the condenser 2 through an expansion valve 3. A refrigerant supply pipe 15 and a discharge pipe 16 are connected to the evaporator 4. The vapor reevaporated in the warm drainage tank 5 is sucked to the vapor ejector 1 to be effectively utilized as cooling heat source for cooling the refrigerant by cooling condensation and adiabatic expansion. <P>COPYRIGHT: (C)2010,JPO&INPIT

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 if the amount increases, the thermal energy it possesses will become large, 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、圧縮機を蒸気エゼクタとすると共に、当該蒸気エゼクタの吸引口に比較的低温度の温排水源を接続して、当該温排水の再蒸発蒸気を蒸気エゼクタで圧縮するものである。   The present invention comprises a compressor, a condenser, an expansion valve, and an evaporator. The compressor is a steam ejector, and a relatively low temperature hot water source is connected to the suction port of the steam ejector. The re-evaporated steam from the hot waste water is compressed by a steam ejector.

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は蒸気エゼクタを用いて、エゼクタ１の吸引口と温排水タンク５の上部を管路６で接続する。蒸気エゼクタ１の入口側に高圧の蒸気を供給する高圧蒸気供給管２０を接続する。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 steam ejector to connect the suction port of the ejector 1 and the upper part of the warm drainage tank 5 by a pipe 6. A high-pressure steam supply pipe 20 that supplies high-pressure steam is connected to the inlet side of the steam ejector 1. 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.

圧縮機としての蒸気エゼクタ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、エゼクタ式真空ポンプ１１を接続する。エゼクタ式真空ポンプ１１は、エゼクタ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１２へ供給することによって、エゼクタ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から供給される中圧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 2 is connected to the outlet side of the steam ejector 1 as a compressor via 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 type 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 by the circulation pump 14, the ejector 12 generates a vacuum suction force. 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 cooling water evaporates the intermediate pressure compressed steam supplied from the pipe 9 in the condenser 2. It can be vaporized and cooled with the latent heat of vaporization.

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、蒸気エゼクタ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 vapor ejector 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、この再蒸発蒸気が蒸気エゼクタ１に吸引されて高圧蒸気と混合されて中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中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 accumulated in the upper part of the tank 5, and this re-evaporated steam is sucked into the steam ejector 1 and mixed with the high pressure steam. It becomes steam of medium pressure and high temperature, is sent to the condenser 2 through the pipe 9 and is cooled to become cold water of medium pressure and low temperature, and is supplied from the expansion valve 3 to the evaporator 4 to cool the refrigerant. It becomes a heat source.

蒸気エゼクタ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蒸気エゼクタ１で中圧蒸気へと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 steam ejector 1 to the warm drainage tank 5 having a relatively low temperature and compressing the re-evaporated steam of the warm drainage to an intermediate pressure steam by the steam ejector 1, the thermal energy possessed by the warm drainage is effectively utilized. Can be used.

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 蒸気エゼクタ
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 エゼクタ式真空ポンプ
１２ エゼクタ
１３ タンク
１４ 循環ポンプ
１５ 冷媒供給管
１６ 冷媒排出管
２０ 高圧蒸気供給管
DESCRIPTION OF SYMBOLS 1 Steam ejector 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 20 High pressure steam supply tube

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、圧縮機を蒸気エゼクタとすると共に、当該蒸気エゼクタの吸引口に比較的低温度の温排水源を接続して、当該温排水の再蒸発蒸気を蒸気エゼクタで圧縮することを特徴とする蒸気圧縮式冷凍機。
In a compressor consisting of a compressor, a condenser, an expansion valve, and an evaporator, the compressor is a steam ejector, and a relatively low temperature hot waste water source is connected to the suction port of the steam ejector to recycle the warm waste water. A vapor compression refrigerator that compresses vaporized vapor with a vapor ejector.
JP2008235330A 2008-09-12 2008-09-12 Vapor compression refrigerator Expired - Fee Related JP5312884B2 (en)

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JP5312884B2 JP5312884B2 (en) 2013-10-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102295566B1 (en) * 2020-10-26 2021-08-31 한국에너지기술연구원 Cooling system using ejector and membrane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448102A (en) * 1990-06-15 1992-02-18 Tlv Co Ltd Vacuum steam generator
JPH1089801A (en) * 1996-09-12 1998-04-10 Toyo Eng Works Ltd Refrigerator
JP2005264747A (en) * 2004-03-16 2005-09-29 Jfe Engineering Kk Ejector, its operation method, and refrigerating system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448102A (en) * 1990-06-15 1992-02-18 Tlv Co Ltd Vacuum steam generator
JPH1089801A (en) * 1996-09-12 1998-04-10 Toyo Eng Works Ltd Refrigerator
JP2005264747A (en) * 2004-03-16 2005-09-29 Jfe Engineering Kk Ejector, its operation method, and refrigerating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102295566B1 (en) * 2020-10-26 2021-08-31 한국에너지기술연구원 Cooling system using ejector and membrane

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