JPH02298763A - Refrigerator - Google Patents
RefrigeratorInfo
- Publication number
- JPH02298763A JPH02298763A JP11867289A JP11867289A JPH02298763A JP H02298763 A JPH02298763 A JP H02298763A JP 11867289 A JP11867289 A JP 11867289A JP 11867289 A JP11867289 A JP 11867289A JP H02298763 A JPH02298763 A JP H02298763A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- liquid
- separator
- switching valve
- compressor
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000005057 refrigeration Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 18
- 238000001704 evaporation Methods 0.000 abstract description 2
- 238000010257 thawing Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野Ｊ
本発明は油冷式スクリュー圧縮機を備えた冷凍装置の除
霜方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] The present invention relates to a defrosting system for a refrigeration system equipped with an oil-cooled screw compressor.
従来の装置は、特開昭５７−２９６４号公報に記載の、
ように、ホットガスバイパ１ス除１時において、コンデ
ン丈内の液冷媒を除霜サイクル側に補給し、除霜サイク
ル側が冷媒不足とならぬ様に安定し九運転を行うことが
主眼であった。The conventional device is described in Japanese Patent Application Laid-Open No. 57-2964,
Thus, when the hot gas bypass is removed, the main objective is to replenish the liquid refrigerant within the condenser height to the defrost cycle side and perform stable operation so that the defrost cycle side does not run out of refrigerant. Ta.
上記従来技術は、除４時の熱源については配慮されてお
らず、ホットガス除４時に、その熱源が不足し、液分＃
ｉｌＩ器内に冷媒液が過剰に溜まり、圧縮機に液戻りを
生ずることがあった。The above conventional technology does not take into consideration the heat source at the time of removing the hot gas, and when the hot gas is removed, the heat source is insufficient and the liquid #
Excessive refrigerant liquid may accumulate in the ilI unit, causing liquid to return to the compressor.
本発明の目的は、ホットガス除霜時における液戻りを防
ぎ、サイクルの安定性を向上することにある。An object of the present invention is to prevent liquid return during hot gas defrosting and improve cycle stability.
上記目的な達成するために、油冷式スクリュー圧縮機に
おいて、油冷却器へ４自冷却され高温の油を用い、逆に
、この油を液分離器に通し、液分１１１器内の液冷媒を
蒸発させ、圧縮機への液戻９を防ぐようにしたものであ
る。In order to achieve the above purpose, in an oil-cooled screw compressor, high-temperature oil that has been self-cooled is used in the oil cooler, and conversely, this oil is passed through a liquid separator to cool the liquid refrigerant in the liquid separator. This prevents the liquid from returning to the compressor.
スクリ圧縮機纏機より吐出され、油分離器にて冷媒ガス
より分離された高温の油は油冷却器へ導ひかれ、冷却さ
れてスクリュー圧縮機へ供給される。本発明では、油分
Ｎ器より出た高温の油を、液分離器内の熱交換器へ通し
、液分離器内の液を蒸発させるための熱源として用い、
次いで油冷却器を経由し、スクリ凰−圧鋪機へ供給する
。このため、高温油にて液分Ｓ器内に溜まっ九冷媒液を
蒸発させることができ、直接スクリュー圧縮機へ液が戻
ることがない。The high-temperature oil discharged from the screw compressor wrapper and separated from the refrigerant gas in the oil separator is led to the oil cooler, cooled, and supplied to the screw compressor. In the present invention, the high temperature oil discharged from the oil N-container is passed through a heat exchanger in the liquid separator and used as a heat source for evaporating the liquid in the liquid separator.
It then passes through an oil cooler and is supplied to the screen press machine. Therefore, the refrigerant liquid accumulated in the liquid separator S can be evaporated with high-temperature oil, and the liquid does not directly return to the screw compressor.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
スクリュー圧縮機ｌで吐出された高温高圧り冷媒ガスは
油と共に油分離４２円に入り、ここで冷媒ガスは油と分
離され、逆止弁８を通り、凝ｍ器令にて液化される。こ
の冷媒液は＃脹弁５及び逆止弁６を通り、空気冷却式蒸
発器７に入り、空気と熱交換し、蒸発ガス化し、液分離
器８に入る。The high-temperature, high-pressure refrigerant gas discharged from the screw compressor l enters the oil separator 42 together with oil, where the refrigerant gas is separated from the oil, passes through the check valve 8, and is liquefied in the condenser m. This refrigerant liquid passes through the expansion valve 5 and check valve 6, enters the air-cooled evaporator 7, exchanges heat with air, evaporates into gas, and enters the liquid separator 8.
この液分＃１１ｉ）８では、空気冷却式蒸発器７にて完
全に蒸発しきれなかった液を分離し、赫スのみが逆止弁
９を通り、スクリエー圧縮機ｌに吸入される。In this liquid fraction #11i) 8, the liquid that has not been completely evaporated in the air-cooled evaporator 7 is separated, and only the liquid passes through the check valve 9 and is sucked into the scree compressor 1.
ここで空気冷却式蒸発器７においては、着霜が発生した
場合は、その除霜のためにホプトガスバイパス弁１８を
開き、高温の冷媒ガスを直接空気冷却式蒸発器７に導き
、除霜を行）。この除霜時には、空気冷却式蒸発器７内
に入ったホットガスは、空気冷却式蒸発ａ７内で凝縮液
化し、液分離器８内に入る。この沈めｖＩｔ霜の進行に
つれ、徐々に液分１ｗ器８内の液が多くなり、着霜量が
多く、除霜時間が長い場合には、圧縮機ｌに直接液が戻
ることがある。In the air-cooled evaporator 7, when frost occurs, the hopto gas bypass valve 18 is opened to defrost the frost, and the high-temperature refrigerant gas is directly guided to the air-cooled evaporator 7 to remove the frost. line frost). During defrosting, the hot gas that has entered the air-cooled evaporator 7 is condensed and liquefied in the air-cooled evaporator a7, and enters the liquid separator 8. As this submerged frost progresses, the liquid in the liquid 1w unit 8 gradually increases, and if the amount of frost is large and the defrosting time is long, the liquid may return directly to the compressor 1.
一方油分虐器２に溜まりた油は、通常は直接油冷却器ｌ
Ｏに導びかれ、冷却水により冷却され、圧縮機に、その
１！４滑用として供給される。従がって油ｆｔｗ！１の
切替弁１１は閉、１２は開となっている。On the other hand, the oil accumulated in the oil collector 2 is usually directly transferred to the oil cooler l.
0, cooled by cooling water, and supplied to the compressor for 1/4 time. Followed by oil ftw! The switching valve 11 of No. 1 is closed, and the switching valve 12 is open.
ここでこの切替弁は除霜時には１１を開、１２を菌とす
る。これにより、高温の油は液分離器８を通り、油冷却
器１０に入る。を九この除霜時には冷却水ポンプ１４を
停止する。従がりて、スクリュー圧縮Ｉｌｌには液分−
器８の熱交換器１５で熱交換され、冷却された油が供給
されることになつ、かつ液分ｌｌ１ｌ器８では溜まった
液冷媒が熱交換により、ガス化し、液がスクリ、ｓ−圧
縮機ｌに吸入されることがなくなる。Here, the switching valve 11 is opened during defrosting and 12 is open for bacteria. Thereby, the hot oil passes through the liquid separator 8 and enters the oil cooler 10. (9) The cooling water pump 14 is stopped during this defrosting. Therefore, in screw compression Ill, liquid -
The cooled oil is supplied through heat exchange in the heat exchanger 15 of the liquid refrigerant 8, and the liquid refrigerant accumulated in the liquid refrigerant 8 is gasified through heat exchange, and the liquid is subjected to scraping and s-compression. It will not be inhaled into the machine.
本発明は以上説明した様に構成されているため、除霜時
に、液分４器に溜まった液冷媒を蒸発させることができ
るため、液戻りの心配がない。Since the present invention is configured as described above, the liquid refrigerant accumulated in the liquid separator 4 can be evaporated during defrosting, so there is no fear of liquid return.
また、除霜時には、油が液分離器内の液により冷却され
るため油冷却器用の冷却水ポンプを停止させることがで
きるため経済性にも秀れている。Furthermore, during defrosting, the oil is cooled by the liquid in the liquid separator, so the cooling water pump for the oil cooler can be stopped, which is excellent in economical efficiency.
第１図は本発明の一実施例を示す冷凍ティクル図である
。
ｌ・・・スクリュー圧ｍ機 ８・・・液分１１１器１
０・・・油冷却器 １１・・・切替弁 １２・・・
切替弁。
１ スクリエー圧ａ鴇イ（２ラ由砒紐各ｌシ ン＆ｔ＝
ζ中もＪｅら−７菫ン頴〔（ｚ５←８７捉介緬各
１０ 三重々打尤Ｉ１１、 ＋２ セＩ［杆FIG. 1 is a frozen tickle diagram showing one embodiment of the present invention. l...Screw pressure m machine 8...Liquid fraction 111 device 1
0...Oil cooler 11...Switching valve 12...
switching valve. 1 Scrier pressure a tokui (2 lines for each l thin &t=
ζ Also Je et al-7 Sumire 〔(z5←87
10 Triple stroke I11, +2 SeI [rod
Claims (1)
を順次配管接続して冷凍サイクルを形成し、油分離、底
部の油配管を第１の切替弁を介して油冷却器に接続する
と共に上記油配管を第２の切替弁を介して液分離器に接
続したのち油冷却器に接続し、油冷却器の他側より油戻
し管をスクリュー圧縮機に接続してなることを特徴とす
る冷凍装置。The screw compressor, oil separator, condensation valve, expansion valve, and liquid separator are connected in sequence to form a refrigeration cycle, and the oil separation and bottom oil piping are connected to the oil cooler via the first switching valve. Additionally, the oil pipe is connected to a liquid separator via a second switching valve and then to an oil cooler, and an oil return pipe is connected to a screw compressor from the other side of the oil cooler. refrigeration equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867289A JPH02298763A (en) | 1989-05-15 | 1989-05-15 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867289A JPH02298763A (en) | 1989-05-15 | 1989-05-15 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02298763A true JPH02298763A (en) | 1990-12-11 |
Family
ID=14742356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11867289A Pending JPH02298763A (en) | 1989-05-15 | 1989-05-15 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02298763A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350469A (en) * | 1991-05-27 | 1992-12-04 | Kobe Steel Ltd | Refrigerator |
| WO2015173939A1 (en) * | 2014-05-15 | 2015-11-19 | 三菱電機株式会社 | Refrigeration unit |
| CN109813006A (en) * | 2019-01-15 | 2019-05-28 | 广东志高暖通设备股份有限公司 | A kind of air-conditioning system and control method improving refrigerated medium heat |
-
1989
- 1989-05-15 JP JP11867289A patent/JPH02298763A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350469A (en) * | 1991-05-27 | 1992-12-04 | Kobe Steel Ltd | Refrigerator |
| WO2015173939A1 (en) * | 2014-05-15 | 2015-11-19 | 三菱電機株式会社 | Refrigeration unit |
| JPWO2015173939A1 (en) * | 2014-05-15 | 2017-04-20 | 三菱電機株式会社 | Refrigeration equipment |
| CN109813006A (en) * | 2019-01-15 | 2019-05-28 | 广东志高暖通设备股份有限公司 | A kind of air-conditioning system and control method improving refrigerated medium heat |
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