JP2575890B2 - Refrigerant recovery device - Google Patents
Refrigerant recovery deviceInfo
- Publication number
- JP2575890B2 JP2575890B2 JP1240806A JP24080689A JP2575890B2 JP 2575890 B2 JP2575890 B2 JP 2575890B2 JP 1240806 A JP1240806 A JP 1240806A JP 24080689 A JP24080689 A JP 24080689A JP 2575890 B2 JP2575890 B2 JP 2575890B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- oil separator
- compressor
- side oil
- refrigerant
- 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.)
- Expired - Lifetime
Links
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
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/002—Collecting refrigerant from a cycle
Landscapes
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、カーエアコン，ルームエアコン等の冷凍
サイクル装置内の冷媒を回収する冷媒回収装置に関す
る。Description: TECHNICAL FIELD The present invention relates to a refrigerant recovery device that recovers refrigerant in a refrigeration cycle device such as a car air conditioner and a room air conditioner.
第２図は、冷凍機油に可溶なＲ−12,R−22等の冷媒が
用いられるカーエアコン，ルームエアコン等の冷凍サイ
クル装置内から、冷媒を回収する従来の冷媒回収装置の
一例を示す系統図である。図中（３）は吸入側オイルセ
パレータ，（５）はアキュムレータ，（６）は圧縮機，
（７）は叶出側オイルセパレータ，（８）は凝縮器，
（９）は凝縮器（８）の冷却用ファン，（10）は冷媒回
収タンク，（１）はカーエアコン等の冷凍サイクル装
置，（２）は冷凍サイクル装置（１）と冷媒回収装置を
接続する接続管、（４）は吸入側オイルセパレータ
（３）の底部に貯溜された冷凍機油の排油弁、（11）は
叶出側オイルセパレータ（７）の底部に貯溜された冷凍
機油を圧縮機（６）に戻す油返し管、（12）は給排油弁
である。上記吸入側オイルセパレータ（３）、および問
集側オイルセパレータ（７）には一般的には繊維状のガ
ラスウール等の充填材が充填されている。FIG. 2 shows an example of a conventional refrigerant recovery device for recovering refrigerant from inside a refrigeration cycle device such as a car air conditioner or a room air conditioner using a refrigerant such as R-12 and R-22 soluble in refrigeration oil. It is a system diagram. In the figure, (3) is the oil separator on the suction side, (5) is the accumulator, (6) is the compressor,
(7) is a delivery side oil separator, (8) is a condenser,
(9) is a cooling fan for the condenser (8), (10) is a refrigerant recovery tank, (1) is a refrigeration cycle device such as a car air conditioner, and (2) is a connection between the refrigeration cycle device (1) and the refrigerant recovery device. (4) is a drain valve for refrigerating machine oil stored at the bottom of the suction-side oil separator (3), and (11) compresses the refrigerating machine oil stored at the bottom of the delivery-side oil separator (7). An oil return pipe returned to the machine (6), and (12) is a supply / drain oil valve. The suction side oil separator (3) and the inquiry side oil separator (7) are generally filled with a filler such as fibrous glass wool.
冷凍サイクル装置（１）内の冷媒ガスは、接続管
（２），吸入側オイルセパレータ（３），アキュムレー
タ（５）を順に流れて圧縮機（６）に吸入され、ここで
圧縮された後、叶出側オイルセパレータ（７）を経て凝
縮機（８）で冷却液化され、冷却回収タンク（10）に収
容される。吸入側オイルセパレータ（３）では、冷却サ
イクル装置（１）内から冷却ガスに同伴されて来た冷凍
機油が分離される。分離された冷凍機油は同収入側オイ
ルセパレータ（３）の底部に貯溜され、随時排油弁
（４）から抜き出される。また叶出側オイルセパレータ
（７）では、圧縮機（６）の圧縮過程で吐出される冷凍
機油が分離除去され、分離された冷凍機油は油返し管
（11）を流れて再び圧縮機（６）内に戻される。なお図
中の矢印は冷凍機油の流れを示す。The refrigerant gas in the refrigeration cycle device (1) flows through the connecting pipe (2), the suction side oil separator (3), and the accumulator (5) in order and is sucked into the compressor (6). After passing through the delivery-side oil separator (7), it is cooled and liquefied by the condenser (8) and stored in the cooling recovery tank (10). In the suction-side oil separator (3), refrigerating machine oil accompanying the cooling gas from inside the cooling cycle device (1) is separated. The separated refrigerating machine oil is stored at the bottom of the income-side oil separator (3) and is withdrawn from the oil drain valve (4) as needed. Further, in the delivery-side oil separator (7), the refrigerating machine oil discharged in the compression process of the compressor (6) is separated and removed, and the separated refrigerating machine oil flows through the oil return pipe (11) and returns to the compressor (6). ). The arrows in the figure indicate the flow of the refrigerating machine oil.
前記従来の冷媒回収装置を用いて冷媒を回収する操作
過程において、吸入側オイルセパレータ（３）と叶出側
オイルセパレータ（７）の各油分離効率（オイルセパレ
ータで除去される冷凍機油量とオイルセパレータ内に流
入する冷凍機油量の割合）にアンバランスであった場合
には、圧縮機（６）のハウジング内の冷凍機油量に過不
足が生じる。冷凍機油量が不足すると、圧縮機（６）内
の潤滑不良によって、摺動部に面荒れ、焼付等の不具合
が生じる。In the operation process of recovering the refrigerant using the conventional refrigerant recovery device, the respective oil separation efficiencies of the suction-side oil separator (3) and the delivery-side oil separator (7) (refrigerator oil amount and oil removed by the oil separator) If the ratio of the amount of refrigerating machine oil flowing into the separator is imbalanced, the amount of refrigerating machine oil in the housing of the compressor (6) will be excessive or insufficient. If the amount of the refrigerating machine oil is insufficient, poor lubrication in the compressor (6) causes the sliding portion to be rough, causing problems such as seizure.
そこで上記不具合を解消するために、圧縮機（６）の
本体に冷凍機油量確認用のサイトグラスを設けて過不足
を監視し、その過不足に応じて給排油弁（12）を介して
冷凍機油を抜出しまたは補給する手段を講じた冷媒回収
装置もあるが、冷媒回収操作中は常時、監視しなければ
ならないという欠点があった。Therefore, in order to solve the above-mentioned problem, a sight glass for checking the amount of oil in the refrigerator is provided on the main body of the compressor (6) to monitor the excess and deficiency. Although there is a refrigerant recovery device provided with a means for extracting or replenishing refrigerating machine oil, it has a drawback that it must be constantly monitored during the refrigerant recovery operation.
この発明は、冷媒回収の操作過程における圧縮機ハウ
ジング内の冷凍機油を常時適正油量に維持できる冷媒回
収装置を提供することを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerant recovery device that can always maintain a proper amount of refrigerating machine oil in a compressor housing during a refrigerant recovery operation process.
この発明は、前記従来の課題を解決するために、冷媒
ガス中の冷凍機油を分離除去する吸入側オイルセパレー
タと、同吸入側オイルセパレータを経た冷媒ガスを圧縮
する圧縮機と、同圧縮機から叶出された冷媒ガスの中の
冷凍機油を分離除去する叶出側オイルセパレータと、同
叶出側オイルセパレータを出た冷媒ガスを凝縮液化させ
る凝縮器と、同凝縮器で液化された冷媒液を収容する回
収タンクとを備え、冷凍サイクルの冷媒を回収するもの
において、上記吸入側オイルセパレータの油分離効率を
上記叶出側オイルセパレータの油分離効率よりも低くす
るとともに、上記圧縮機に圧縮機ハウジング内と連通し
た油取出し口を設け、同油取出し口と上記吸入側オイル
セパレータの入口との間を油戻り管によって接続したこ
とを特徴とする冷媒回収装置を提案するものである。In order to solve the above-mentioned conventional problems, the present invention provides a suction-side oil separator that separates and removes refrigeration oil in a refrigerant gas, a compressor that compresses a refrigerant gas that has passed through the suction-side oil separator, and a compressor. A delivery-side oil separator that separates and removes refrigeration oil from the delivered refrigerant gas, a condenser that condenses and liquefies the refrigerant gas that has exited the delivery-side oil separator, and a refrigerant liquid that is liquefied by the condenser. And a recovery tank for storing the refrigerant in the refrigeration cycle, wherein the oil separation efficiency of the suction-side oil separator is lower than the oil separation efficiency of the delivery-side oil separator, and the oil is compressed by the compressor. A refrigerant outlet provided with an oil outlet communicating with the inside of the machine housing, and an oil return pipe connecting the oil outlet to an inlet of the oil separator on the suction side. It is intended to propose a revenue system.
この発明によれば、オイルセパレータの油分離効率を
吸入側オイルセパレータで低く、叶出側オイルセパレー
タでは高くするとともに、圧縮機に油取出し口を設け、
その油取出し口と吸入側オイルセパレータ入口を油戻り
管で接続したので、冷媒回収装置の操作過程において圧
縮機ハウジング内の冷凍機油量が漸増し、この冷凍機油
の増加分は油戻り管を流れて吸入側オイルセパレータの
底部に貯溜される。したがって圧縮機ハウジング内の冷
凍機油面は、常時、油取出し口の取付位置に保持され
る。According to the present invention, the oil separation efficiency of the oil separator is low in the suction-side oil separator, and high in the delivery-side oil separator, and an oil outlet is provided in the compressor.
Since the oil outlet and the inlet of the oil separator on the suction side are connected by an oil return pipe, the amount of refrigerating machine oil in the compressor housing gradually increases during the operation of the refrigerant recovery device, and the increased amount of the refrigerating machine oil flows through the oil return pipe. Is stored at the bottom of the suction side oil separator. Therefore, the refrigerating machine oil level in the compressor housing is always kept at the mounting position of the oil outlet.
第１図はこの発明の一実施例を示す系統図である。こ
の第１図において、前記第２図により説明した従来のも
のと同様の部分については、冗長になるのを避けるた
め、同一の符号を付け詳しい説明を省く。FIG. 1 is a system diagram showing one embodiment of the present invention. In FIG. 1, parts similar to those of the related art described with reference to FIG. 2 are given the same reference numerals to avoid redundancy, and detailed description is omitted.
この実施例では、オイルセパレータの油分離効率を、
吸入側オイルセパレータ（３）では低く、叶出側オイル
セパレータ（７）では高くしてある。油分離効率は、デ
ミスタの積層高さ、ガラスウール等の充填材の充填率等
を換えることにより、種々に設定することができる。こ
の実施例ではまた、圧縮機（６）の本体にはそのハウジ
ング内と連通した油取出し口（13）が設けられ、この油
取出し口（13）と吸入側オイルセパレータ（３）の入口
との間が油戻り管（14）で接続されている。上記油取出
し口（13）は、圧出機（６）のハウジング内の冷凍機油
が正規の油量を確保される位置に設けられる。In this embodiment, the oil separation efficiency of the oil separator is
It is low in the suction side oil separator (3) and high in the delivery side oil separator (7). The oil separation efficiency can be set variously by changing the stack height of the demister, the filling rate of the filler such as glass wool, and the like. In this embodiment, the main body of the compressor (6) is provided with an oil outlet (13) communicating with the inside of the housing, and the oil outlet (13) is connected to the inlet of the suction-side oil separator (3). The spaces are connected by an oil return pipe (14). The oil outlet (13) is provided at a position in the housing of the extruder (6) where the refrigerating machine oil has a regular oil amount.
この実施例においても、冷凍サイクル装置（１）内の
冷媒ガスの回収と冷凍機油の分離，排出は、第２図に示
される従来の冷媒回収装置の場合と同様にして行なわれ
る。Also in this embodiment, the collection of the refrigerant gas in the refrigeration cycle apparatus (1) and the separation and discharge of the refrigerating machine oil are performed in the same manner as in the conventional refrigerant recovery apparatus shown in FIG.
この実施例においては、吸入側オイルセパレータ
（３）で分離除去されずに圧縮機（６）内に吸入される
冷凍機油の量は、叶出側オイルセパレータ（７）で分離
除去されずに凝縮器（８）へ流れる冷凍器油量よりも多
く、圧縮機（６）内の冷凍機油は漸増する。上記圧縮機
（６）内の冷凍機油量の増加によって油取出し口（13）
の取付位置よりも上に上昇した冷凍機油は、圧縮機
（６）内および吸入側オイルセパレータ（３）内の間の
圧力差により油戻り管（14）を経由して吸入側オイルセ
パレータ（３）に流れ込み、その大部分はここで分離さ
れて吸入側オイルセパレータ（３）の底部に溜る。この
結果、圧縮機（６）内の冷凍機油は常時、油取出し口
（13）の取付位置の液面を確保することができる。図中
の矢印は冷凍機油の流れを示す。In this embodiment, the amount of refrigerating machine oil sucked into the compressor (6) without being separated and removed by the suction-side oil separator (3) is condensed without being separated and removed by the delivery-side oil separator (7). The amount of refrigerating machine oil in the compressor (6) is larger than the amount of refrigerating machine oil flowing to the compressor (8), and gradually increases. Oil outlet (13) due to an increase in the amount of refrigerating machine oil in the compressor (6)
The refrigerating machine oil that has risen above the mounting position of the suction side oil separator (3) passes through the oil return pipe (14) due to the pressure difference between the compressor (6) and the suction side oil separator (3). ), Most of which is separated here and collects at the bottom of the suction-side oil separator (3). As a result, the refrigerating machine oil in the compressor (6) can always maintain the liquid level at the mounting position of the oil outlet (13). The arrows in the figure indicate the flow of the refrigerating machine oil.
なお、油戻り管（14）には、圧縮機（６）から吸入側
オイルセパレータ（３）へ冷凍機油が徐々に流れるよう
に、管路の途中にオリフィス，チョーク等の流量抵抗器
を設けることもできる。The oil return pipe (14) should be provided with a flow resistor such as an orifice or choke in the middle of the pipe so that the refrigerating machine oil flows gradually from the compressor (6) to the suction-side oil separator (3). Can also.
この発明によれば、冷媒回収の操作過程における圧縮
機ハウジング内の冷凍機油が、常時適正油量を確保され
るので、冷凍機油量の監視作業の手間が省けるととも
に、冷凍機油不足を原因とする圧縮機焼付け等を防止す
ることができる。According to the present invention, since the refrigerating machine oil in the compressor housing in the operation process of refrigerant recovery always has an appropriate oil amount, the trouble of monitoring the refrigerating machine oil amount can be saved, and the shortage of the refrigerating machine oil can be caused. Compressor baking and the like can be prevented.
【図面の簡単な説明】 第１図はこの発明の一実施例を示す系統図、第２図は従
来の冷媒回収装置の一例を示す系統図である。 1:冷凍サイクル装置， 3:吸入側オイルセパレータ， 4:排油弁,5:アキュムレータ， 6:圧縮機,7:叶出側オイルセパレータ， 8:凝縮器,10:冷媒回収タンク， 11:油返し管,12:給排油弁， 13:油取出し口,14:油戻り管，BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram showing an embodiment of the present invention, and FIG. 2 is a system diagram showing an example of a conventional refrigerant recovery device. 1: refrigeration cycle device, 3: suction side oil separator, 4: drain valve, 5: accumulator, 6: compressor, 7: delivery side oil separator, 8: condenser, 10: refrigerant recovery tank, 11: oil Return pipe, 12: oil supply / drain valve, 13: oil outlet, 14: oil return pipe,
───────────────────────────────────────────────────── フロントページの続き (72)発明者 花井 実 愛知県名古屋市中村区岩塚町字高道１番 地 三菱重工業株式会社名古屋研究所内 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoru Hanai 1st Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi, Aichi, Japan Nagoya Research Laboratory, Mitsubishi Heavy Industries, Ltd.
Claims (1)
側オイルセパレータと、同吸入側オイルセパレータを経
た冷媒ガスを圧縮する圧縮機と、同圧縮機から叶出され
た冷媒ガスの中の冷凍機油を分離除去する叶出側オイル
セパレータと、同叶出側オイルセパレータを出た冷媒ガ
スを凝縮液化させる凝縮器と、同凝縮器で液化された冷
媒液を収容する回収タンクとを備え、冷凍サイクル内の
冷媒を回収するものにおいて、上記吸入側オイルセパレ
ータの油分離効率を上記叶出側オイルセパレータの油分
離効率よりも低くするとともに、上記圧縮機に圧縮機ハ
ウジング内と連通した油取出し口を設け、同油取出し口
と上記吸入側オイルセパレータの入口との間を油戻り管
によって接続したことを特徴とする冷媒回収装置。1. A suction side oil separator for separating and removing refrigeration oil in a refrigerant gas, a compressor for compressing the refrigerant gas passing through the suction side oil separator, and a refrigerant gas discharged from the compressor. A boiler-side oil separator that separates and removes the refrigerating machine oil, a condenser that condenses and liquefies the refrigerant gas that has flowed out of the boiler-side oil separator, and a collection tank that stores the refrigerant liquid liquefied by the condenser. For recovering the refrigerant in the refrigeration cycle, the oil separation efficiency of the suction-side oil separator is made lower than the oil separation efficiency of the delivery-side oil separator, and the oil removal that communicates with the compressor inside the compressor housing. A refrigerant recovery device, wherein a port is provided, and the oil outlet and the inlet of the suction-side oil separator are connected by an oil return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240806A JP2575890B2 (en) | 1989-09-19 | 1989-09-19 | Refrigerant recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1240806A JP2575890B2 (en) | 1989-09-19 | 1989-09-19 | Refrigerant recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03105180A JPH03105180A (en) | 1991-05-01 |
| JP2575890B2 true JP2575890B2 (en) | 1997-01-29 |
Family
ID=17064965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1240806A Expired - Lifetime JP2575890B2 (en) | 1989-09-19 | 1989-09-19 | Refrigerant recovery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575890B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021032421A (en) * | 2019-08-15 | 2021-03-01 | 株式会社戸張空調 | Refrigerant recovery auxiliary device |
-
1989
- 1989-09-19 JP JP1240806A patent/JP2575890B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03105180A (en) | 1991-05-01 |
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