JP2014190586A - Ejector type refrigeration cycle device - Google Patents

Ejector type refrigeration cycle device Download PDF

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JP2014190586A
JP2014190586A JP2013065236A JP2013065236A JP2014190586A JP 2014190586 A JP2014190586 A JP 2014190586A JP 2013065236 A JP2013065236 A JP 2013065236A JP 2013065236 A JP2013065236 A JP 2013065236A JP 2014190586 A JP2014190586 A JP 2014190586A
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refrigerant
ejector
supplied
generator
heat exchanger
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Keizo Yokoyama
計三 横山
Keiichi Yoshimuta
圭一 吉牟田
Susumu Nakano
進 中野
Takuya Tago
拓弥 田子
Tatsuya Saegusa
達哉 三枝
Hidetaka Ando
英孝 安藤
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NIKKEI CO Ltd
Hibiya Engineering Ltd
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NIKKEI CO Ltd
Hibiya Engineering 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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Abstract

PROBLEM TO BE SOLVED: To provide an ejector-type refrigeration cycle device capable of improving energy efficiency by improving efficiency of recovery of heat from drive refrigerant of a freezer by an ejector-type refrigeration cycle.SOLUTION: Mixture refrigerant discharged from an ejector 2 is introduced into an internal heat exchanger 8. Liquefied refrigerant R is supplied to the heat exchanger 8 by a refrigerant circulation pump 5 via a condenser 4. In the heat exchanger 8, the refrigerant R is subjected to heat exchange with the mixture refrigerant to increase a temperature of the refrigerant R, and then supplied to a generator 1. Since the temperature of the mixture liquid is increased in advance, a load to a heat medium such as factory waste heat or the like supplied to the generator 1 is reduced, so that the generator 1 operates stably. Since the temperature of the mixture refrigerant supplied to the condenser 4 is decreased in the internal heat exchanger 8, a load to cooling water supplied to the condenser 4 is reduced.

Description

この発明は、エジェクタ式冷凍サイクルによる冷凍機の構造に関し、運転効率の向上を図ったエジェクタ式冷凍サイクル装置に関する。   The present invention relates to a structure of a refrigerator using an ejector-type refrigeration cycle, and relates to an ejector-type refrigeration cycle apparatus that improves operating efficiency.

エネルギ損失を削減して冷凍効率を向上させることができ、省エネルギー化を促進できるエジェクタ式冷凍サイクルを利用したエジェクタ式冷凍機がある。斯かるエジェクタ式冷凍機では、小型・軽量化を促進できる等の利点を備えている。また、この種のエジェクタ式冷凍システムは、主として、エジェクタと加熱装置、蒸発器、凝縮器、膨張弁、冷媒ポンプにより冷凍回路が構成される。一方、本願出願人は、冷媒を加熱して冷媒の蒸気を生成する際の熱源として太陽熱コレクタで加熱された作動媒体をエジェクタに供給して冷水を得るようにしたエジェクタ式冷凍システムを提案している(特許文献１参照)。   There is an ejector-type refrigerator that uses an ejector-type refrigeration cycle that can reduce energy loss and improve refrigeration efficiency and promote energy saving. Such an ejector type refrigerator has advantages such as being able to promote downsizing and weight reduction. In addition, this type of ejector refrigeration system mainly includes a refrigeration circuit including an ejector, a heating device, an evaporator, a condenser, an expansion valve, and a refrigerant pump. On the other hand, the present applicant has proposed an ejector-type refrigeration system in which a working medium heated by a solar collector is supplied to the ejector as a heat source when the refrigerant is heated to generate the refrigerant vapor to obtain cold water. (See Patent Document 1).

ところで、図２は、この種のエジェクタ式冷凍サイクルの一例を示すブロック図であり、特に工場などの生産施設から廃棄されている85℃程度の温水等の各種の廃熱を保有している温水を投入する方式のエジェクタ式冷凍機を示している。投入された温水Whは発生器１を介して冷媒Ｒを蒸発させて蒸気を発生させる。この蒸気がエジェクタ２に供給されて、該エジェクタ２のノズル部を通過する際の吸引効果によって蒸発器３を負圧にして蒸発潜熱を低温熱源として蒸発器３を介して冷水Wcを生成して所望の設備等へ供給する。   By the way, FIG. 2 is a block diagram showing an example of this type of ejector refrigeration cycle, and particularly hot water having various waste heat such as hot water of about 85 ° C. discarded from production facilities such as factories. The ejector type refrigerator of the system which inputs is shown. The charged hot water Wh evaporates the refrigerant R through the generator 1 to generate steam. This steam is supplied to the ejector 2 to generate the cold water Wc through the evaporator 3 by using the suction effect when passing through the nozzle portion of the ejector 2 to make the evaporator 3 have a negative pressure and using the latent heat of evaporation as a low-temperature heat source. Supply to desired equipment.

前記ノズル部では発生器１で蒸発した高圧冷媒Rhを減圧して駆動冷媒とすることで蒸発器３から吸引冷媒Rsを吸引し、駆動冷媒と蒸発器３から吸引される吸引冷媒Rsとが混合されて凝縮器４に供給され、冷却水Wと熱交換されて液体に戻される。液体となった冷媒Ｒはレシーバータンク７に貯留され、冷媒循環ポンプ５によって前記発生器１に該レシーバータンク７から連続的に供給されると共に、膨張弁６を通して前記蒸発器３に供給される。   In the nozzle section, the high-pressure refrigerant Rh evaporated in the generator 1 is decompressed to be a driving refrigerant, so that the suction refrigerant Rs is sucked from the evaporator 3 and the driving refrigerant and the suction refrigerant Rs sucked from the evaporator 3 are mixed. Then, it is supplied to the condenser 4, exchanged heat with the cooling water W, and returned to the liquid. The refrigerant R that has become liquid is stored in the receiver tank 7, and is continuously supplied from the receiver tank 7 to the generator 1 by the refrigerant circulation pump 5, and is also supplied to the evaporator 3 through the expansion valve 6.

ところで、この種のエジェクタ式冷凍サイクル装置の運転効率の向上を図ることを企図したものとして、例えば、特許文献２に開示された液体ポンプのポンプ効率の低下を防止しようとする冷凍機や、特許文献３に開示されたエジェクタの入口における冷媒の過冷却度が小さくなりまたは極低温域になり難くなり、システム性能の低下を抑制しようとするエジェクタサイクルが提案されている。   By the way, as an attempt to improve the operation efficiency of this type of ejector-type refrigeration cycle apparatus, for example, a refrigerator that attempts to prevent a decrease in pump efficiency of a liquid pump disclosed in Patent Document 2, An ejector cycle has been proposed in which the degree of supercooling of the refrigerant at the entrance of the ejector disclosed in Document 3 becomes small or becomes difficult to reach a very low temperature range, and the deterioration of the system performance is suppressed.

特開２０１０−９６４３６号公報JP 2010-96436 A 特開２００４−２０５１５４号公報JP 2004-205154 A 特開２００６−２９７１４号公報JP 2006-29714 A

例えば、前記特許文献２に開示された冷凍機では、自動車に搭載されものであるため、廃熱熱交換器にエンジン冷却水やエンジン排気を熱源として冷媒を加熱している。一方、この種のエジェクタ式冷凍サイクル装置を工場等の廃熱等を利用する場合には、種々の熱媒があるため、発生器の運転を安定させると共に、熱効率の向上を図ることが要求される。   For example, since the refrigerator disclosed in Patent Document 2 is mounted on an automobile, the coolant is heated by using the engine cooling water or the engine exhaust as a heat source in the waste heat heat exchanger. On the other hand, when this type of ejector-type refrigeration cycle apparatus uses waste heat from a factory or the like, since there are various heat media, it is required to stabilize the operation of the generator and improve the thermal efficiency. The

そこで、この発明は、エジェクタ式冷凍サイクル装置の利用分野が広範であり、発生器の熱源も種々あることに鑑みて、発生器の運転を極力安定させると共に、効率の向上を図ってエジェクタを安定して駆動できるエジェクタ式冷凍サイクル装置を目的としている。   Therefore, in view of the fact that the field of application of the ejector-type refrigeration cycle apparatus is wide and there are various heat sources for the generator, the invention stabilizes the operation of the generator as much as possible and improves the efficiency to stabilize the ejector. It aims at the ejector type refrigerating cycle device which can be driven in this way.

前記目的を達成するための技術的手段としてこの発明に係るエジェクタ式冷凍サイクル装置は、発生器で発生させた冷媒蒸気を駆動流体として供給し、吸引流体を吸引して蒸発器内で発生する蒸発潜熱によって対象流体を冷却するエジェクタを有し、該エジェクタから排出された冷媒を凝縮器で液化させ、該液化させた冷媒を冷媒循環ポンプによって前記発生器へ返戻させると共に、膨張弁を介して前記蒸発器へ供給するエジェクタ式冷凍サイクル装置において、前記エジェクタの吐出側に内部熱交換器を具備させ、前記発生器へ冷媒を供給する冷媒循環ポンプの吐出側を前記内部熱交換器に接続し、前記内部熱交換器の排出側を前記発生器に接続して、該発生器へ供給する冷媒を前記エジェクタからの排熱で加熱することを特徴としている。   As a technical means for achieving the above object, an ejector-type refrigeration cycle apparatus according to the present invention supplies refrigerant vapor generated by a generator as a driving fluid, and sucks suction fluid to generate evaporation generated in the evaporator. An ejector for cooling the target fluid by latent heat; the refrigerant discharged from the ejector is liquefied by a condenser; the liquefied refrigerant is returned to the generator by a refrigerant circulation pump; In the ejector-type refrigeration cycle apparatus to be supplied to the evaporator, an internal heat exchanger is provided on the discharge side of the ejector, and a discharge side of a refrigerant circulation pump that supplies the refrigerant to the generator is connected to the internal heat exchanger. The discharge side of the internal heat exchanger is connected to the generator, and the refrigerant supplied to the generator is heated by the exhaust heat from the ejector.

前記エジェクタにより前記蒸発器で対象流体を冷却して、該エジェクタから排出される熱により前記内部熱交換器を介して前記発生器に供給する冷媒を昇温させる。発生器では冷媒を加熱して前記エジェクタの駆動流体を生成することになる。   The target fluid is cooled by the evaporator by the ejector, and the temperature of the refrigerant supplied to the generator through the internal heat exchanger is increased by the heat discharged from the ejector. In the generator, the refrigerant is heated to generate a drive fluid for the ejector.

この発明に係るエジェクタ式冷凍サイクル装置によれば、発生器に供給する熱媒の供給量を減じることができ、エネルギー効率の向上を図ることができる。しかも、熱媒の供給量を減じることによって、安定した熱媒の供給を行うことができるので、発生器を安定して動作させることができる。また、エジェクタから排出される熱が降温されて凝縮器に供給されるから、該凝縮器の排出熱量も下げることができる。すなわち、エジェクタ式冷凍サイクル装置としてのエネルギー効率の向上を図ることができる。   According to the ejector refrigeration cycle apparatus according to the present invention, the supply amount of the heat medium supplied to the generator can be reduced, and the energy efficiency can be improved. In addition, since the heat medium can be supplied stably by reducing the supply amount of the heat medium, the generator can be operated stably. Further, since the heat discharged from the ejector is lowered and supplied to the condenser, the amount of heat discharged from the condenser can also be reduced. That is, the energy efficiency of the ejector refrigeration cycle apparatus can be improved.

この発明に係るエジェクタ式冷凍サイクル装置の概略のブロック図である。1 is a schematic block diagram of an ejector refrigeration cycle apparatus according to the present invention. 従来のエジェクタ式冷凍機の概略構造を説明する図である。It is a figure explaining the schematic structure of the conventional ejector type refrigerator.

以下、図示した好ましい実施の形態に基づいて、この発明に係るエジェクタ式冷凍機を具体的に説明する。   Hereinafter, an ejector type refrigerator according to the present invention will be described in detail based on the illustrated preferred embodiment.

図１は、この発明に係るエジェクタ式冷凍機10の主たる構成を説明するブロック図である。なお、図２に示すエジェクタ式冷凍機と同一の部分については同一の符号を付してある。   FIG. 1 is a block diagram illustrating a main configuration of an ejector type refrigerator 10 according to the present invention. In addition, the same code | symbol is attached | subjected about the same part as the ejector-type refrigerator shown in FIG.

エジェクタ式冷凍機10は、主として発生器１とエジェクタ２、蒸発器３、内部熱交換器８、凝縮器４、冷媒循環ポンプ５、膨張弁６とにより構成されている。発生器１には、工場から排出される約85℃程度の温水やコ・ジェネレーションシステムからの廃熱、温泉の熱、あるいは太陽熱コレクターで集熱した温水Whが熱媒として供給される。発生器１の冷媒Ｒの入口側には冷媒循環ポンプ５の吐出側の接続されて、該冷媒循環ポンプ５によって冷媒Ｒが供給される。発生器１の出口側はエジェクタ２の入口が接続されており、発生器１によって冷媒Ｒが加熱されて生成されれた高圧冷媒Rhが供給されている。   The ejector type refrigerator 10 mainly includes a generator 1, an ejector 2, an evaporator 3, an internal heat exchanger 8, a condenser 4, a refrigerant circulation pump 5, and an expansion valve 6. The generator 1 is supplied with hot water of about 85 ° C. discharged from the factory, waste heat from the cogeneration system, hot spring heat, or hot water Wh collected by a solar heat collector as a heat medium. The inlet side of the refrigerant R of the generator 1 is connected to the discharge side of the refrigerant circulation pump 5, and the refrigerant R is supplied by the refrigerant circulation pump 5. The outlet side of the generator 1 is connected to the inlet of the ejector 2, and the high-pressure refrigerant Rh generated by heating the refrigerant R by the generator 1 is supplied.

前記エジェクタ２のノズル部2aには蒸発器３の冷媒Ｒの出口側が接続されており、入口から供給された高圧冷媒Rhを該ノズル部2aで減圧させて発生した駆動流体としての駆動冷媒の負圧によって該蒸発器３から吸引流体としての吸引冷媒Rsが吸引される。このノズル部2aの下流には混合部2bが設けられ、混合部2bの下流にはディフューザ部2cが設けられており、入口から供給されて発生した前記駆動冷媒と、該駆動冷媒と吸引冷媒Rsとが混合された混合冷媒とは、ノズル部2a、混合部2b、ディフューザ部2cの順に流れて出口から吐出される。   The nozzle portion 2a of the ejector 2 is connected to the outlet side of the refrigerant R of the evaporator 3. The negative pressure of the driving refrigerant as the driving fluid generated by reducing the pressure of the high-pressure refrigerant Rh supplied from the inlet by the nozzle portion 2a. The suction refrigerant Rs as suction fluid is sucked from the evaporator 3 by the pressure. A mixing unit 2b is provided downstream of the nozzle unit 2a, and a diffuser unit 2c is provided downstream of the mixing unit 2b. The driving refrigerant generated by being supplied from the inlet, the driving refrigerant and the suction refrigerant Rs The mixed refrigerant mixed with and flows in the order of the nozzle part 2a, the mixing part 2b, and the diffuser part 2c, and is discharged from the outlet.

エジェクタ２の出口には前記内部熱交換器８が接続されて、該エジェクタ２から排出された混合冷媒の蒸気がこの内部熱交換器８の熱媒とされている。この内部熱交換器８の排出側に前記凝縮器４が接続されており、前記混合冷媒は外部から供給される冷却水Ｗによって液体の冷媒Ｒに戻される。この凝縮器４の出口側には前記レシーバータンク７が接続されて、液体となった冷媒Ｒがこのレシーバータンク７に貯留される。   The internal heat exchanger 8 is connected to the outlet of the ejector 2, and the vapor of the mixed refrigerant discharged from the ejector 2 serves as a heat medium for the internal heat exchanger 8. The condenser 4 is connected to the discharge side of the internal heat exchanger 8, and the mixed refrigerant is returned to the liquid refrigerant R by the cooling water W supplied from the outside. The receiver tank 7 is connected to the outlet side of the condenser 4, and the refrigerant R that has become liquid is stored in the receiver tank 7.

前記レシーバータンク７には前記冷媒循環ポンプ５の吸込側が接続され、該冷媒循環ポンプ５の吐出側が前記内部熱交換器８に接続されて、前記冷媒Ｒが該冷媒循環ポンプ５により内部熱交換器８に供給されるようにしてある。そして、内部熱交換器８の出口側が前記発生器１に接続されて、冷媒循環ポンプ５により冷媒Ｒが内部熱交換器８を経由して前記発生器１に供給されるようにしてある。   The receiver tank 7 is connected to the suction side of the refrigerant circulation pump 5, the discharge side of the refrigerant circulation pump 5 is connected to the internal heat exchanger 8, and the refrigerant R is connected to the internal heat exchanger by the refrigerant circulation pump 5. 8 is provided. The outlet side of the internal heat exchanger 8 is connected to the generator 1, and the refrigerant R is supplied to the generator 1 via the internal heat exchanger 8 by the refrigerant circulation pump 5.

また、前記冷媒循環ポンプ５の吸込側には膨張弁６を介して前記蒸発器３の入口側が接続されている。   The inlet side of the evaporator 3 is connected to the suction side of the refrigerant circulation pump 5 via an expansion valve 6.

以上により構成されたこの発明に係るエジェクタ式冷凍機では、発生器１に温水Whが供給されて、冷媒Ｒを加熱することにより蒸発して発生した高圧冷媒Rhがエジェクタ２に供給され、ノズル部2aを通過する際に減圧されて駆動冷媒を生成する。なお、発生器１に供給される冷媒Ｒは、後述するように、前記内部熱交換器８を通って昇温されている。エジェクタ２の前記ノズル部2aには蒸発器３で生成された吸引冷媒Rsが供給されており、前記駆動冷媒がノズル部2aを通過する際に発生される負圧によって該吸引冷媒Rsが吸引されて駆動冷媒に伴われる。   In the ejector-type refrigerator according to the present invention configured as described above, the hot water Wh is supplied to the generator 1, the high-pressure refrigerant Rh generated by evaporation by heating the refrigerant R is supplied to the ejector 2, and the nozzle unit When passing through 2a, the pressure is reduced to generate a driving refrigerant. In addition, the refrigerant | coolant R supplied to the generator 1 is heated up through the said internal heat exchanger 8, so that it may mention later. The suction refrigerant Rs generated by the evaporator 3 is supplied to the nozzle part 2a of the ejector 2, and the suction refrigerant Rs is sucked by the negative pressure generated when the driving refrigerant passes through the nozzle part 2a. Accompanying the driving refrigerant.

エジェクタ２のノズル部2aで吸引された吸引冷媒Rsは前記混合部2bにて前記駆動冷媒と混合されて混合流体である混合冷媒となる。この混合部2bの下流側のディフューザ部2cで混合冷媒が減速されて昇圧される。この混合冷媒が前記内部熱交換器８に熱媒として供給され、該内部熱交換器８の排出側に接続された前記凝縮器４に供給されて、冷却水Ｗによって冷却されて液体の冷媒Ｒに戻され、前記レシーバータンク７に貯留される。   The suction refrigerant Rs sucked by the nozzle part 2a of the ejector 2 is mixed with the driving refrigerant in the mixing part 2b to become a mixed refrigerant that is a mixed fluid. The mixed refrigerant is decelerated and pressurized in the diffuser section 2c on the downstream side of the mixing section 2b. This mixed refrigerant is supplied to the internal heat exchanger 8 as a heat medium, supplied to the condenser 4 connected to the discharge side of the internal heat exchanger 8, and cooled by the cooling water W to be a liquid refrigerant R. And stored in the receiver tank 7.

レシーバータンク７に貯留された冷媒Ｒは前記冷媒循環ポンプ５によって前記内部熱交換器８に供給される。この内部熱交換器８には、前述のように、エジェクタ２から排出された混合冷媒が供給されているから、冷媒Ｒは該混合冷媒によって昇温された後、該内部熱交換器８に接続された前記発生器１に供給される。すなわち、発生器１に供給される冷媒Ｒは内部熱交換器８によって昇温されたものとなっている。このため、冷媒Ｒを蒸発させるための発生器１に熱源として供給される熱媒の負荷が軽減されるから、該熱媒の供給量を減じることができる。例えば、この熱媒に工場の廃熱が利用されている場合、工場の稼働状況によって熱媒の供給量や温度に変動があっても、発生器１の動作を安定させることができる。   The refrigerant R stored in the receiver tank 7 is supplied to the internal heat exchanger 8 by the refrigerant circulation pump 5. Since the mixed refrigerant discharged from the ejector 2 is supplied to the internal heat exchanger 8 as described above, the refrigerant R is heated by the mixed refrigerant and then connected to the internal heat exchanger 8. The generated generator 1 is supplied. That is, the refrigerant R supplied to the generator 1 is heated by the internal heat exchanger 8. For this reason, since the load of the heat medium supplied as a heat source to the generator 1 for evaporating the refrigerant R is reduced, the supply amount of the heat medium can be reduced. For example, when the waste heat of the factory is used for this heat medium, the operation of the generator 1 can be stabilized even if the supply amount or temperature of the heat medium varies depending on the operation status of the factory.

また、前記内部熱交換器８で冷媒Ｒを加温した混合媒体は降温されて前記凝縮器４に供給されるから、該凝縮器４に供給される冷却水Ｗの負荷を軽減でき、例えば冷却水Ｗの供給量を減じることができる。   Further, since the mixed medium in which the refrigerant R is heated by the internal heat exchanger 8 is cooled and supplied to the condenser 4, the load of the cooling water W supplied to the condenser 4 can be reduced. The supply amount of water W can be reduced.

前記冷媒循環ポンプ５の吸込側には前記膨張弁６を介在させて蒸発器３が接続されているから、前記凝縮器４で戻された冷媒Ｒの一部は前記膨張弁６を介して前記蒸発器３に供給されている。   Since the evaporator 3 is connected to the suction side of the refrigerant circulation pump 5 with the expansion valve 6 interposed therebetween, a part of the refrigerant R returned by the condenser 4 passes through the expansion valve 6. It is supplied to the evaporator 3.

そして、前記蒸発器３から吸引冷媒Rsが前記エジェクタ２の駆動冷媒に吸引され、その際の蒸発潜熱により蒸発器３に供給された対象流体である水Ｗを冷却して冷水Wcが生成され、該冷水Wcは所望の用途に利用されることになる。   Then, the suction refrigerant Rs is sucked from the evaporator 3 to the drive refrigerant of the ejector 2, and the water W as the target fluid supplied to the evaporator 3 is cooled by the latent heat of evaporation at that time to generate cold water Wc, The cold water Wc is used for a desired application.

この発明に係るエジェクタ式冷凍機によれば、発生器で加熱して蒸発させるべき冷媒を昇温させた状態で該発生器に供給できるので、発生器への熱媒の供給量を減じて、熱源への負荷を減じると共に、凝縮器への供給される冷媒も降温されるので該凝縮器への冷却水の供給量も減じられるので、エジェクタ式冷凍サイクル装置のエネルギー効率の向上に寄与し、エジェクタ式冷凍サイクル装置の利用分野の拡大に寄与する。   According to the ejector type refrigerator according to the present invention, since the refrigerant to be heated and evaporated by the generator can be supplied to the generator in a heated state, the supply amount of the heat medium to the generator is reduced, As well as reducing the load on the heat source, the refrigerant supplied to the condenser is also cooled, so the amount of cooling water supplied to the condenser is also reduced, contributing to the improvement of the energy efficiency of the ejector refrigeration cycle apparatus, Contributes to the expansion of the application field of ejector refrigeration cycle equipment.

Wh 温水
Wc 冷水
Rh 高圧冷媒（駆動流体）
Rs 吸引冷媒（吸引流体）
１ 発生器
２ エジェクタ
３ 蒸発器
４ 凝縮器
５ 冷媒循環ポンプ
６ 膨張弁
７ レシーバータンク
８ 内部熱交換器
10 エジェクタ式冷凍機 Wh hot water
Wc cold water
Rh High-pressure refrigerant (driving fluid)
Rs Suction refrigerant (suction fluid)
DESCRIPTION OF SYMBOLS 1 Generator 2 Ejector 3 Evaporator 4 Condenser 5 Refrigerant circulation pump 6 Expansion valve 7 Receiver tank 8 Internal heat exchanger
10 Ejector type refrigerator

Claims (1)

発生器で発生させた冷媒蒸気を駆動流体として供給し、吸引流体を吸引して蒸発器内で発生する蒸発潜熱によって対象流体を冷却するエジェクタを有し、該エジェクタから排出された冷媒を凝縮器で液化させ、該液化させた冷媒を冷媒循環ポンプによって前記発生器へ返戻させると共に、膨張弁を介して前記蒸発器へ供給するエジェクタ式冷凍サイクル装置において、
前記エジェクタの吐出側に内部熱交換器を具備させ、
前記発生器へ冷媒を供給する冷媒循環ポンプの吐出側を前記内部熱交換器に接続し、
前記内部熱交換器の排出側を前記発生器に接続して、該発生器へ供給する冷媒を前記エジェクタからの排熱で加熱することを特徴とするエジェクタ式冷凍サイクル装置。 A refrigerant vapor generated by a generator is supplied as a driving fluid, an ejector that sucks the suction fluid and cools the target fluid by the latent heat of evaporation generated in the evaporator, and the refrigerant discharged from the ejector is a condenser In the ejector-type refrigeration cycle apparatus, the refrigerant liquefied by and returned to the generator by a refrigerant circulation pump and supplied to the evaporator via an expansion valve,
An internal heat exchanger is provided on the discharge side of the ejector,
Connecting the discharge side of a refrigerant circulation pump for supplying refrigerant to the generator to the internal heat exchanger;
An ejector-type refrigeration cycle apparatus, wherein a discharge side of the internal heat exchanger is connected to the generator, and a refrigerant supplied to the generator is heated by exhaust heat from the ejector.
JP2013065236A 2013-03-26 2013-03-26 Ejector type refrigeration cycle device Pending JP2014190586A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104930741A (en) * 2015-05-29 2015-09-23 浙江工业大学 Novel compression auxiliary jetting refrigerating system with supercooler
CN112065688A (en) * 2019-06-10 2020-12-11 中国科学院理化技术研究所 Jet reinforced vacuum system
CN112524831A (en) * 2020-12-11 2021-03-19 西安交通大学 Flash separation injection refrigeration cycle system using mixed refrigerant and working method
CN113803904A (en) * 2021-10-15 2021-12-17 山东艾斯伦制冷设备有限公司 Refrigerating system and method using heat energy and storage medium

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Publication number Priority date Publication date Assignee Title
JPS4713465Y1 (en) * 1970-06-05 1972-05-17
JPH0182463U (en) * 1987-11-25 1989-06-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4713465Y1 (en) * 1970-06-05 1972-05-17
JPH0182463U (en) * 1987-11-25 1989-06-01

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104930741A (en) * 2015-05-29 2015-09-23 浙江工业大学 Novel compression auxiliary jetting refrigerating system with supercooler
CN112065688A (en) * 2019-06-10 2020-12-11 中国科学院理化技术研究所 Jet reinforced vacuum system
CN112524831A (en) * 2020-12-11 2021-03-19 西安交通大学 Flash separation injection refrigeration cycle system using mixed refrigerant and working method
CN112524831B (en) * 2020-12-11 2021-09-03 西安交通大学 Flash separation injection refrigeration cycle system using mixed refrigerant and working method
CN113803904A (en) * 2021-10-15 2021-12-17 山东艾斯伦制冷设备有限公司 Refrigerating system and method using heat energy and storage medium
CN113803904B (en) * 2021-10-15 2023-10-03 山东艾斯伦制冷科技有限公司 Refrigerating system, method and storage medium utilizing heat energy

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