JPH01155149A - Refrigeration cycle device - Google Patents
Refrigeration cycle deviceInfo
- Publication number
- JPH01155149A JPH01155149A JP31273487A JP31273487A JPH01155149A JP H01155149 A JPH01155149 A JP H01155149A JP 31273487 A JP31273487 A JP 31273487A JP 31273487 A JP31273487 A JP 31273487A JP H01155149 A JPH01155149 A JP H01155149A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- boiling point
- compressor
- pressure
- evaporator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005057 refrigeration Methods 0.000 title claims description 16
- 239000003507 refrigerant Substances 0.000 claims abstract description 100
- 238000009835 boiling Methods 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 239000000284 extract Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0011—Ejectors with the cooled primary flow at reduced or low pressure
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、非共沸混合冷媒を用いて低温を得る冷凍サイ
クル装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a refrigeration cycle device that obtains a low temperature using a non-azeotropic refrigerant mixture.
従来の技術
従来、非共沸混合冷媒を用いて低温を得る冷凍サイクル
装置として、第２図に示すような装置が提案されている
。第２図において、１は圧縮機、２は凝縮器、３は気ｉ
夜分離器、４は補助凝縮器、５．６は絞り装置、７は蒸
発器であり、このような装置において圧縮６１より吐出
された非共沸混合冷媒を凝縮器２で凝縮させたのち、気
液分溜器３によりｎ４に冷媒とガス状冷媒とに分離させ
、補助凝縮″ａ４でガス状冷媒を凝縮させたのち、絞り
装置６を介して蒸発器７へ流す一方、液状冷媒は絞り装
置５で減圧され補助凝縮器４でガス状冷媒と熱交換して
蒸発したのち、蒸発器７から流出する冷媒と混合されて
圧縮［１に吸入される。2. Description of the Related Art Conventionally, a device as shown in FIG. 2 has been proposed as a refrigeration cycle device that obtains a low temperature using a non-azeotropic mixed refrigerant. In Figure 2, 1 is a compressor, 2 is a condenser, and 3 is an air i
A night separator, 4 is an auxiliary condenser, 5.6 is a throttle device, and 7 is an evaporator. In such a device, the non-azeotropic mixed refrigerant discharged from the compressor 61 is condensed in the condenser 2, and then The gas-liquid separator 3 separates the refrigerant into n4 and the gaseous refrigerant, and after condensing the gaseous refrigerant in the auxiliary condenser ``a4'', it flows to the evaporator 7 via the throttle device 6, while the liquid refrigerant is throttled. After being depressurized in the device 5 and evaporated by exchanging heat with the gaseous refrigerant in the auxiliary condenser 4, it is mixed with the refrigerant flowing out from the evaporator 7 and sucked into the compressor [1].
発明が解決しようとする問題点
しかしながら、Ｉ：記のような冷凍サイクル装置では、
蒸発器７から流出する冷媒と補助凝縮器４て蒸発して流
出する冷媒とを混合して圧縮機ｌに吸入さωるため、補
助凝縮器４で蒸発する冷媒圧力は蒸発器７で蒸発する冷
媒圧力とほぼ同一の低い圧力にする必要があり、そのた
め蒸発器７で低温を得ろためには圧縮機ｌの吸入圧力が
非常に低くなり、圧縮比が大きくなって圧縮機ｌの効率
低下の原因となると共に、圧縮機１乞こ吸入される冷媒
の比容積も大きくなり冷媒循環漬の低下をもたらずとい
った欠点があった。Problems to be Solved by the Invention However, in the refrigeration cycle device as described in I.
The refrigerant flowing out from the evaporator 7 and the refrigerant evaporating from the auxiliary condenser 4 are mixed and sucked into the compressor 1, so that the pressure of the refrigerant evaporated in the auxiliary condenser 4 is evaporated in the evaporator 7. It is necessary to maintain a low pressure that is almost the same as the refrigerant pressure. Therefore, in order to obtain a low temperature in the evaporator 7, the suction pressure of the compressor 1 must be extremely low, and the compression ratio will increase, causing a decrease in the efficiency of the compressor 1. In addition to this, the specific volume of the refrigerant sucked into the compressor 1 also becomes large, resulting in a drawback that the refrigerant circulation efficiency is not reduced.
本発明のは、圧縮機の吸入圧力を下げることなく、蒸発
器において低温が得られる冷凍サイクル構成を提供する
ことを目的とする。An object of the present invention is to provide a refrigeration cycle configuration in which a low temperature can be obtained in the evaporator without lowering the suction pressure of the compressor.
問題点を解決するための手段
本発明の冷凍す・ｆクル装置は、非共沸混合冷媒を封入
し、圧縮機、凝縮器、高沸点冷媒と低沸点冷媒を分Ｍす
る分離器、高沸点液冷媒の蒸発により低沸点ガス冷媒を
凝縮させる補助凝縮器、絞り装置、蒸発器等を順次接続
すると共に、前記補助凝縮器の高沸点冷媒の出口と圧縮
機の吸入側との間に冷媒エジェクタを設け、さらに前記
蒸発器出目と前記冷媒エジェクタの吸引口とを接続した
ことを特徴とするものである。Means for Solving the Problems The refrigeration system of the present invention includes a compressor, a condenser, a separator for separating high-boiling point refrigerant and low-boiling point refrigerant, and a high-boiling point refrigerant. An auxiliary condenser, a throttling device, an evaporator, etc. for condensing a low-boiling gas refrigerant by evaporation of a liquid refrigerant are connected in sequence, and a refrigerant ejector is provided between the high-boiling refrigerant outlet of the auxiliary condenser and the suction side of the compressor. Further, the evaporator exit and the suction port of the refrigerant ejector are connected.
作用
本発明は１−記した構成により、圧縮機より叶出さ第１
た非共沸混合冷媒を、凝縮器で凝縮させたのち、分Ｍ器
により高沸点冷媒と低沸点冷媒に分離し、補ＤＪＪ凝縮
器において高沸点液冷媒との熱交換により低沸点ガス冷
媒を凝縮させると共に、カス化された高沸点冷媒は冷媒
エジェクタを介して前記圧縮機の吸入側に導き、一方、
液化された低沸点冷媒は紋り装置を介して蒸発器で蒸発
させたのち、前記冷媒エジェクタの吸引口に導き、前記
高沸点冷媒と混合させて前記圧縮機の吸入側に導くこと
ができ、低温を得るために蒸発器の圧力を低くした場合
にも圧縮機の吸入圧力を蒸発器の圧力より高くできるた
め、圧縮比の増大および圧縮機に吸入される冷媒の比容
積の増大を防止できるものである。Operation The present invention has the following configuration:
After condensing the non-azeotropic mixed refrigerant in a condenser, it is separated into a high-boiling point refrigerant and a low-boiling point refrigerant in a separator, and a low-boiling point gas refrigerant is converted into a low-boiling point gas refrigerant by heat exchange with the high-boiling point liquid refrigerant in the auxiliary DJJ condenser. While being condensed, the high boiling point refrigerant that has been turned into scum is guided to the suction side of the compressor via a refrigerant ejector, while
The liquefied low boiling point refrigerant is evaporated in an evaporator via a sintering device, and then guided to the suction port of the refrigerant ejector, mixed with the high boiling point refrigerant, and guided to the suction side of the compressor, Even when the pressure of the evaporator is lowered to obtain a lower temperature, the suction pressure of the compressor can be made higher than the pressure of the evaporator, which prevents an increase in the compression ratio and the specific volume of the refrigerant sucked into the compressor. It is something.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図は本発明の冷凍サイクル装置の一実施例てあり、
圧縮機８、凝縮器９、高沸点冷媒と低沸点冷媒を分離す
る精留分離器ｌＯ１高沸点液冷媒の蒸発により低沸点ガ
ス冷媒を凝縮させる補助凝縮器１１、絞り装置１２、蒸
発器１３を順次接続すると共に、補１１７１凝縮器１１
の高沸点冷媒の出口と圧縮機８の吸入側との間に冷媒エ
ジェクタ１４を設け、さらに蒸発器１３出日と冷媒エジ
ェクタ１４の吸引口とが接続されている。FIG. 1 shows an embodiment of the refrigeration cycle device of the present invention.
Compressor 8, condenser 9, rectification separator lO1 for separating high boiling point refrigerant and low boiling point refrigerant, auxiliary condenser 11 for condensing low boiling point gas refrigerant by evaporation of high boiling point liquid refrigerant, throttling device 12, and evaporator 13. While connecting sequentially, auxiliary 1171 condenser 11
A refrigerant ejector 14 is provided between the outlet of the high boiling point refrigerant and the suction side of the compressor 8, and furthermore, the output of the evaporator 13 and the suction port of the refrigerant ejector 14 are connected.
なお精留分離器１０は精留塔１５、貯留器１６、加熱ヒ
ータ１７から構成されており、精留分離器ＩＯの貯留器
１６より高沸点液冷媒を、精留塔１５の−Ｌ部より低沸
点ガス冷媒を抽出することができる。また、１８は高沸
点冷媒用の減圧器である。The rectification separator 10 is composed of a rectification column 15, a reservoir 16, and a heater 17, and the high-boiling liquid refrigerant is supplied from the reservoir 16 of the rectification separator IO and from the -L section of the rectification column 15. Low-boiling gas refrigerants can be extracted. Further, 18 is a pressure reducer for high boiling point refrigerant.
このような冷凍サイクル装置において非共沸混合冷媒を
封入し、圧縮機８を駆動すると圧縮機８より吐出された
非共沸混合冷媒は、凝縮器９で凝縮したのち、精留分離
器１０の精留塔１５１一部より貯留器１６に入り、ここ
で加熱ヒーター１７により、貯留３１６内部の冷媒中主
に低沸点冷媒が気化され、精留塔１５内部をＪ−Ｗする
。このとき凝縮器９出［二１からは液冷媒が供給され、
精留塔１５内部で気液接触により精留作用が起こり、上
昇する気体は低沸点冷媒の濃度が高まり、逆に下降ずろ
液体は高沸点冷媒の濃度が高まり、貯留器１６は凝縮液
の状態の高沸点冷媒で満たされる。この貯留器１６より
流出する高沸点液冷媒は減圧器１８で中間圧まで減圧さ
れて補助凝縮器１１に導かれろ。In such a refrigeration cycle device, when a non-azeotropic mixed refrigerant is sealed and the compressor 8 is driven, the non-azeotropic mixed refrigerant discharged from the compressor 8 is condensed in the condenser 9 and then transferred to the rectification separator 10. The refrigerant enters the reservoir 16 from a part of the rectification column 151, where mainly the low boiling point refrigerant in the refrigerant inside the reservoir 316 is vaporized by the heating heater 17, and the inside of the rectification column 15 is J-Wed. At this time, liquid refrigerant is supplied from condenser 9 [21],
A rectification action occurs due to gas-liquid contact inside the rectification column 15, and the rising gas has an increased concentration of low-boiling point refrigerant, and conversely, the descending liquid has an increased concentration of high-boiling point refrigerant, and the reservoir 16 is in the state of condensed liquid. filled with high boiling point refrigerant. The high boiling point liquid refrigerant flowing out from the reservoir 16 is reduced in pressure to an intermediate pressure by a pressure reducer 18 and is led to the auxiliary condenser 11.
一方、精留塔１５上部より流出する低沸点ガス冷媒は補
助凝縮器１１に流入し、ここで、高沸点液冷媒と熱交換
して高沸点液冷媒は蒸発気化し、低沸点ガス冷媒は凝縮
液化する。気化された高沸点冷媒は冷媒エジェクタ１４
に流入する。また、液化された低沸点冷媒は紋り装置１
２で低温低圧の状態にされ、蒸発器１３に導かれる。こ
こで低温蒸発することにより冷凍効果を発揮したのち、
冷媒エジェクタ１４の吸引口に吸い込まれ、高沸点冷媒
と混合１）で中間圧までｄ圧されたのち圧縮［８に吸入
される。On the other hand, the low-boiling point gas refrigerant flowing out from the upper part of the rectification column 15 flows into the auxiliary condenser 11, where it exchanges heat with the high-boiling point liquid refrigerant, and the high-boiling point liquid refrigerant is evaporated and vaporized, and the low-boiling point gas refrigerant is condensed. liquefy. The vaporized high boiling point refrigerant is sent to the refrigerant ejector 14
flows into. In addition, the liquefied low boiling point refrigerant is
2, it is brought to a low temperature and low pressure state, and is led to an evaporator 13. After demonstrating the freezing effect by low-temperature evaporation here,
The refrigerant is sucked into the suction port of the refrigerant ejector 14, mixed with a high boiling point refrigerant 1) to an intermediate pressure d, and then sucked into the compressor [8].
このように低温を得るために蒸発器１３の圧力を低くし
た場合にも圧縮［８の吸入圧力を蒸発器１３の圧力より
高い中間圧にできるため、圧縮比の増大および圧縮機８
に吸入される冷媒の比容積の増大を防止できるものであ
る。In this way, even when the pressure of the evaporator 13 is lowered to obtain a low temperature, the suction pressure of the compressor [8] can be made to an intermediate pressure higher than the pressure of the evaporator 13, which increases the compression ratio and reduces the pressure of the compressor [8].
This prevents an increase in the specific volume of the refrigerant sucked into the refrigerant.
なお、加熱ヒーター１７の代わりに圧縮機１１の吐出配
管等冷凍サイクル中の高温熱源を用いてもよいことはも
ちろんのことであり、その場合には凝縮器９の小型化に
も効果がある。It goes without saying that a high-temperature heat source in the refrigeration cycle, such as the discharge pipe of the compressor 11, may be used instead of the heater 17, and in that case, the condenser 9 can also be made smaller.
また、本実施例においては高沸点冷媒と低沸点冷媒をよ
り厳密に分離して従来と同一の低圧でもより低温を実現
するため、精留塔１５、貯留器１６、加熱ヒータ１７よ
りなる精留分離器１０を用いたが、混合する冷媒の種類
あるいは使用目的により精留分離器１０の代わりに気液
分離器を使用することもできる。In addition, in this embodiment, in order to more strictly separate the high boiling point refrigerant and the low boiling point refrigerant and achieve a lower temperature even at the same low pressure as in the past, the rectifying column 15, the reservoir 16, and the heater 17 are used. Although the separator 10 is used, a gas-liquid separator may be used instead of the rectification separator 10 depending on the type of refrigerant to be mixed or the purpose of use.
発明の効果
以上の説明より明らかなように、本発明の冷凍サイクル
装置においては、低温を得るために蒸発器の圧力を低く
した場合にも圧縮機の吸入圧力を蒸発器の圧力より高い
中間圧に保つことができ、圧縮比の増大による効率恢下
や、圧縮機に吸入される冷媒の比容積の増大による冷媒
循環量の減少を防止でき、冷凍サイクル装置の効率向上
を図ることができるものである。また、分離器として精
留塔、貯留器、加熱ヒータよりなる精留分離器を用いる
ことにより、気液分離器を使用する場合に比べて蒸発器
に導かれる低沸点冷媒の濃度を非常に高めることができ
、そのため同一蒸発圧力でもより低温が得られる。Effects of the Invention As is clear from the above explanation, in the refrigeration cycle device of the present invention, even when the pressure of the evaporator is lowered to obtain a low temperature, the suction pressure of the compressor is maintained at an intermediate pressure higher than the pressure of the evaporator. It is possible to improve the efficiency of refrigeration cycle equipment by preventing a decrease in efficiency due to an increase in the compression ratio and a decrease in the amount of refrigerant circulating due to an increase in the specific volume of refrigerant sucked into the compressor. It is. In addition, by using a rectification separator consisting of a rectification column, a reservoir, and a heater as a separator, the concentration of the low-boiling refrigerant led to the evaporator can be greatly increased compared to when using a gas-liquid separator. Therefore, lower temperatures can be obtained with the same evaporation pressure.
第１図は本発明の一実施例の冷凍サイクル装置の構成図
、第２図は従来例の冷凍サイクル装置の構成図である。
８・・・・圧縮機、９・・・・凝縮器、ｌＯ・・・・精
留分離器、１１・・・・補助凝縮器、１２・・・・絞り
装置、１３・・・・蒸発器、１４・・・・冷媒エジェク
タ。FIG. 1 is a configuration diagram of a refrigeration cycle device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional refrigeration cycle device. 8... Compressor, 9... Condenser, 1O... Rectification separator, 11... Auxiliary condenser, 12... Squeezing device, 13... Evaporator , 14... Refrigerant ejector.
Claims (2)
沸点冷媒と低沸点冷媒を分離する分離器、高沸点液冷媒
の蒸発により低沸点ガス冷媒を凝縮させる補助凝縮器、
絞り装置、蒸発器等を順次接続すると共に、前記補助凝
縮器の高沸点冷媒の出口と圧縮機の吸入側との間に冷媒
エジェクタを設け、前記蒸発器出口と前記冷媒エジェク
タの吸引口とを接続したことを特徴とする冷凍サイクル
装置。(1) A compressor, a condenser, a separator that separates a high-boiling point refrigerant and a low-boiling point refrigerant, and an auxiliary condenser that condenses a low-boiling gas refrigerant by evaporating the high-boiling point liquid refrigerant;
A throttling device, an evaporator, etc. are connected in sequence, and a refrigerant ejector is provided between the high boiling point refrigerant outlet of the auxiliary condenser and the suction side of the compressor, and the evaporator outlet and the suction port of the refrigerant ejector are connected. A refrigeration cycle device characterized by being connected.
なる精留分離器を設けると共に、前記精留分離器の貯留
器より高沸点液冷媒を、精留塔の上部より低沸点ガス冷
媒を抽出することを特徴とする特許請求の範囲第１項記
載の冷凍サイクル装置。(2) A rectification separator consisting of a rectification column, a reservoir, and a heater is provided as a separator, and a high-boiling liquid refrigerant is supplied from the reservoir of the rectification separator, and a low-boiling gas refrigerant is supplied from the upper part of the rectification column. The refrigeration cycle device according to claim 1, wherein the refrigeration cycle device extracts the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62312734A JPH0752038B2 (en) | 1987-12-10 | 1987-12-10 | Refrigeration cycle equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62312734A JPH0752038B2 (en) | 1987-12-10 | 1987-12-10 | Refrigeration cycle equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01155149A true JPH01155149A (en) | 1989-06-19 |
| JPH0752038B2 JPH0752038B2 (en) | 1995-06-05 |
Family
ID=18032781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62312734A Expired - Lifetime JPH0752038B2 (en) | 1987-12-10 | 1987-12-10 | Refrigeration cycle equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752038B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008045773A (en) * | 2006-08-11 | 2008-02-28 | Denso Corp | Ejector type refrigerating cycle |
| JP2008082693A (en) * | 2006-08-28 | 2008-04-10 | Calsonic Kansei Corp | Refrigerating cycle |
| US7779647B2 (en) | 2005-05-24 | 2010-08-24 | Denso Corporation | Ejector and ejector cycle device |
| CN107192153A (en) * | 2017-07-25 | 2017-09-22 | 广东工业大学 | Twin-stage sweat cooling system with injector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5938564A (en) * | 1982-08-24 | 1984-03-02 | 松下電器産業株式会社 | Refrigerator |
| JPS6280452A (en) * | 1985-10-02 | 1987-04-13 | 株式会社日立製作所 | Refrigeration cycle |
| JPS62261861A (en) * | 1986-05-06 | 1987-11-14 | 三菱電機株式会社 | Heat pump device |
-
1987
- 1987-12-10 JP JP62312734A patent/JPH0752038B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5938564A (en) * | 1982-08-24 | 1984-03-02 | 松下電器産業株式会社 | Refrigerator |
| JPS6280452A (en) * | 1985-10-02 | 1987-04-13 | 株式会社日立製作所 | Refrigeration cycle |
| JPS62261861A (en) * | 1986-05-06 | 1987-11-14 | 三菱電機株式会社 | Heat pump device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7779647B2 (en) | 2005-05-24 | 2010-08-24 | Denso Corporation | Ejector and ejector cycle device |
| JP2008045773A (en) * | 2006-08-11 | 2008-02-28 | Denso Corp | Ejector type refrigerating cycle |
| JP2008082693A (en) * | 2006-08-28 | 2008-04-10 | Calsonic Kansei Corp | Refrigerating cycle |
| CN107192153A (en) * | 2017-07-25 | 2017-09-22 | 广东工业大学 | Twin-stage sweat cooling system with injector |
| CN107192153B (en) * | 2017-07-25 | 2023-07-28 | 广东工业大学 | Double-stage evaporation refrigeration system with ejector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0752038B2 (en) | 1995-06-05 |
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