JPS6078258A - Two-element refrigerator - Google Patents
Two-element refrigeratorInfo
- Publication number
- JPS6078258A JPS6078258A JP18300783A JP18300783A JPS6078258A JP S6078258 A JPS6078258 A JP S6078258A JP 18300783 A JP18300783 A JP 18300783A JP 18300783 A JP18300783 A JP 18300783A JP S6078258 A JPS6078258 A JP S6078258A
- Authority
- JP
- Japan
- Prior art keywords
- temperature side
- precooler
- low
- condenser
- refrigeration cycle
- 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.)
- Pending
Links
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（発明の利用分野）
本発明は二元冷凍装置に係シ、詳しくは低温側冷凍サイ
クルに予冷器を具えた二元冷凍装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a dual refrigeration system, and more particularly to a dual refrigeration system equipped with a precooler in the low temperature side refrigeration cycle.
従来の二元冷凍装置を第１図により説明すると、高温側
圧縮機１、凝縮器２、膨張弁３、カスケードコンデンサ
４からなる高温側冷凍サイクルと、低温側圧縮器５、予
冷器６、油分離器７、前記カスケードコンデンサ４、膨
張弁８、蒸発器９からなる低温側冷凍サイクルとを組合
せた構成となっている。A conventional binary refrigeration system is explained with reference to FIG. 1. The high temperature side refrigeration cycle consists of a high temperature side compressor 1, a condenser 2, an expansion valve 3, and a cascade condenser 4, and a low temperature side compressor 5, a precooler 6, and an oil cycle. It has a configuration in which a separator 7, the cascade condenser 4, an expansion valve 8, and a low-temperature side refrigeration cycle consisting of an evaporator 9 are combined.
そして、高温側冷凍サイクルにおいては、高温側圧縮機
１よシ吐出する冷媒が凝縮器２で凝縮液化し、膨張弁３
で減圧された後、カスケードコンデンサ４で低温側冷凍
サイクルの冷媒と熱交換して蒸発し再び高温側圧縮機１
に戻る、というサイクルを繰り返す。In the high temperature side refrigeration cycle, the refrigerant discharged from the high temperature side compressor 1 is condensed and liquefied in the condenser 2, and the expansion valve 3
After the pressure is reduced at
Return to , and repeat the cycle.
一方、低温側冷凍サイクルにおいては、低温側圧縮機５
より吐出する冷媒が一旦、予冷器６で予冷され、さらに
油分離器７で油を分離された後、カスケードコンデンサ
４で凝縮液化し、膨張弁８で減圧された後、蒸発器９で
被冷却物と熱交換して蒸発し再び低温側圧縮機５に戻る
、というサイクルを繰り返す。尚、図中１０は凝縮器用
の送風機、１１は予冷器用の送風機、１２は油分離器７
で分離された油を低温側圧縮機５に戻す油戻し配管を示
す。On the other hand, in the low temperature side refrigeration cycle, the low temperature side compressor 5
The refrigerant discharged from the tank is first precooled in a precooler 6, and then oil is separated in an oil separator 7, condensed and liquefied in a cascade condenser 4, depressurized in an expansion valve 8, and then cooled in an evaporator 9. The cycle of exchanging heat with objects, evaporating, and returning to the low-temperature side compressor 5 is repeated. In the figure, 10 is a condenser blower, 11 is a precooler blower, and 12 is an oil separator 7.
The oil return piping that returns the separated oil to the low-temperature side compressor 5 is shown.
ところで、二元冷凍装置においては、蒸発器９の冷媒蒸
発温度が一５０°Ｃ〜−９０“０にもなり、冷凍機油の
戻りが困難なため油分離器７を取付けるのが一般的であ
る。また予冷器６の目的は２つあり、その１つはこの油
分離器７で分離される油の温度をあらかじめ低下させる
ことにより、高温の油にて圧縮機がオーバーヒートする
ことを防ぐことにある。また第２の目的は、カスケード
コンデンサ４にて凝縮する低温側冷凍サイクルの熱量を
できるだけ少なくすることにある。低温側圧縮機５より
吐出される冷媒ガス温度は５０〜８０ ’Ｃ程度である
が、カスケードコンデンサ４における凝縮温度は−１０
’Ｃ〜−４０℃にもなる。このため吐出ガス温度をあら
かじめ室温の２０〜３０℃まで予冷器６にて冷却してお
けば、カスケードコンデンサ４にて凝縮する熱量が１０
〜２０チ程度少なくてすみ、その分だけ低温側冷凍サイ
クルの性能が向上するし、また高温側冷凍サイクルの容
量を下げることも可能である。By the way, in a binary refrigeration system, the refrigerant evaporation temperature of the evaporator 9 can range from 150°C to -90'0, making it difficult to return the refrigeration oil, so it is common to install an oil separator 7. Also, the purpose of the precooler 6 is twofold, one of which is to lower the temperature of the oil separated by the oil separator 7 in advance to prevent the compressor from overheating due to high temperature oil. The second purpose is to minimize the amount of heat in the low-temperature side refrigeration cycle that is condensed in the cascade condenser 4.The temperature of the refrigerant gas discharged from the low-temperature side compressor 5 is about 50 to 80'C. However, the condensation temperature in cascade condenser 4 is -10
'C to -40℃. Therefore, if the temperature of the discharged gas is cooled in advance to room temperature of 20 to 30°C using the precooler 6, the amount of heat condensed in the cascade condenser 4 will be reduced to 10°C.
About 20 inches is required, and the performance of the low-temperature side refrigeration cycle is improved accordingly, and it is also possible to reduce the capacity of the high-temperature side refrigeration cycle.
予冷器６は以上のような目的のために取付けられること
か多いが、独自の予冷器や送風詣１１が必要となるため
、製品の取まとめ上煩雑になるばかりでなく、原価高に
もなるという欠点がある。The precooler 6 is often installed for the above purpose, but since it requires its own precooler and air blower 11, it not only complicates product collection but also increases costs. There is a drawback.
本発明の目的は、予冷器としての機能を失うことなく独
自の予冷器や送風機を省略でき、製品の取まとめの簡略
化、原価低減を図れる二元冷凍装置を提供することにあ
る。An object of the present invention is to provide a dual refrigeration system that can omit its own precooler and blower without losing its function as a precooler, simplify product collection, and reduce costs.
本発明の特徴とすることは、低温側冷凍サイクルの予冷
器と、高嵩側冷凍サイクルの凝縮器とが、ともに周囲空
気と熱交換するという点に着目し、予冷器と凝縮器を一
体構造となるように構成したことにある。A feature of the present invention is that the precooler of the low-temperature side refrigeration cycle and the condenser of the high-bulk side refrigeration cycle both exchange heat with the surrounding air, and the precooler and condenser are integrated into an integrated structure. The reason is that it is configured so that.
以下、本発明の実施例を第２図、第３図により説明する
。第２図は本発明による二元冷凍装置のサイクル系統図
、第３図は凝縮用兼予冷用の熱交換器を示す斜視図であ
る。第２図において、第１図と同一符号のものは同じも
の、もしくは相当す、−３〒
るものを示している。本発明による二元冷凍装置では、
第２図、第３図に示す如く凝縮器と予冷器とを一体構造
にした熱交換器１３を具えている。Embodiments of the present invention will be described below with reference to FIGS. 2 and 3. FIG. 2 is a cycle system diagram of the dual refrigeration system according to the present invention, and FIG. 3 is a perspective view showing a condensing and precooling heat exchanger. In Figure 2, the same reference numerals as in Figure 1 indicate the same or equivalent items. In the binary refrigeration device according to the present invention,
As shown in FIGS. 2 and 3, the heat exchanger 13 is provided with a condenser and a precooler integrated into one body.
即ち、熱交換器１３は、凝縮用熱交換部１４と予冷用熱
交換部１５とを組合せた構成となっている。そして前記
凝縮用熱交換部１４の入口は配管１６を介して高温側圧
縮機１の吐出側に、かつ出口は配管１７を介して膨張弁
３の入口側にそれぞれ接続されている。また前記予冷用
熱交換部１５０入口は配管１８を介して低温側圧縮機５
の吐出側に、かつ出口は配管１９を介して油分離器７０
人口側にそれぞれ接続されている。尚、図中２０は熱交
換器用の送風機を示す。That is, the heat exchanger 13 has a configuration in which a condensing heat exchange section 14 and a precooling heat exchange section 15 are combined. The inlet of the condensing heat exchange section 14 is connected to the discharge side of the high temperature side compressor 1 via a pipe 16, and the outlet is connected to the inlet side of the expansion valve 3 via a pipe 17. Further, the inlet of the pre-cooling heat exchange section 150 is connected to the low temperature side compressor 5 through the pipe 18.
, and the outlet is connected to an oil separator 70 via piping 19.
Each is connected to the population side. Note that 20 in the figure indicates a blower for the heat exchanger.
しかるに、本発明による二元冷凍装置において、低温側
圧縮機５より吐出された冷媒は、配管１８を通って熱交
換器１３の予冷用熱交換部１５に入り、ここで室温近く
まで予冷された後、配管１９を通って油分離器７に導か
れ、低温側サイクルを循環する。However, in the binary refrigeration system according to the present invention, the refrigerant discharged from the low-temperature side compressor 5 passes through the pipe 18 and enters the pre-cooling heat exchange section 15 of the heat exchanger 13, where it is pre-cooled to near room temperature. Thereafter, the oil is guided to the oil separator 7 through the pipe 19 and circulated through the low-temperature side cycle.
従って、前記熱交換器１３の容量は若干大きく・−４−
なるが、従来技術のような独自の予冷器及び送風機を省
略できるので、製品数まとめ上の煩雑さをさけることが
できると共に、原価低減も可能となる０
〔発明の効果〕
以上説明したように、本発明によれば、高部側冷凍サイ
クルの凝縮器と低温側冷凍サイクルの予冷器とを一体構
造としたので、予冷器としての機能を失うことなく独自
の予冷器や送風機を省略でき、製品の取まとめの簡略化
、−原価低減を図れるTherefore, although the capacity of the heat exchanger 13 is slightly larger, it is possible to omit the need for a unique precooler and blower as in the conventional technology, which makes it possible to avoid the complexity of calculating the number of products and to reduce the cost. [Effects of the Invention] As explained above, according to the present invention, the condenser of the high-side refrigeration cycle and the precooler of the low-temperature side refrigeration cycle are integrated, so that it can be used as a precooler. The unique precooler and blower can be omitted without losing the functionality of the product, simplifying product collection and reducing costs.
第１図は従来の二元冷凍装置のサイクル系統図、第２図
は本発明による二元冷凍装置のサイクル系統図、第３図
は第２図における凝縮用兼予冷用の熱交換器を示す斜視
図である。
１・・・高湛側圧縮器 ２・・・凝縮器 ３・・・膨張
弁 ４・・・カスケードコンデンサ ５・・・低温側圧
縮機 ８・・・膨張弁 ９・・・蒸発器 １３・・・熱
交換器 １４・・・凝縮用熱交換部 １５・・・予冷用
熱交換部第うｍ
１３
３０９−FIG. 1 is a cycle diagram of a conventional binary refrigeration system, FIG. 2 is a cycle diagram of a dual refrigeration system according to the present invention, and FIG. 3 is a condensing and precooling heat exchanger in FIG. 2. FIG. 1... High pressure side compressor 2... Condenser 3... Expansion valve 4... Cascade condenser 5... Low temperature side compressor 8... Expansion valve 9... Evaporator 13...・Heat exchanger 14... Condensing heat exchange section 15... Pre-cooling heat exchange section No. 13 309-
Claims (1)
よシなる高温側冷凍サイクルと、低温側圧縮機、予冷器
、前記カスケードコンデンサ、膨張弁、蒸発器よりなる
低温側冷凍サイクルとを組合せた二元冷凍サイクルにお
いて、高温側冷凍サイクルの凝縮器と低温側冷凍サイク
ルの予冷器とを一体に構成したことを特徴とする二元冷
凍装置A high-temperature side refrigeration cycle consisting of a high-temperature side compressor, a condenser, an expansion valve, and a cascade condenser, and a low-temperature side refrigeration cycle consisting of a low-temperature side compressor, a precooler, the cascade condenser, an expansion valve, and an evaporator. A dual refrigeration system characterized in that, in the original refrigeration cycle, the condenser of the high temperature side refrigeration cycle and the precooler of the low temperature side refrigeration cycle are integrally configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18300783A JPS6078258A (en) | 1983-10-03 | 1983-10-03 | Two-element refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18300783A JPS6078258A (en) | 1983-10-03 | 1983-10-03 | Two-element refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6078258A true JPS6078258A (en) | 1985-05-02 |
Family
ID=16128109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18300783A Pending JPS6078258A (en) | 1983-10-03 | 1983-10-03 | Two-element refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012220111A (en) * | 2011-04-08 | 2012-11-12 | Mitsubishi Electric Corp | Binary refrigerating device |
-
1983
- 1983-10-03 JP JP18300783A patent/JPS6078258A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012220111A (en) * | 2011-04-08 | 2012-11-12 | Mitsubishi Electric Corp | Binary refrigerating device |
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