JPH06174341A - Refrigerator oil elimination device and refrigerant replacing method - Google Patents
Refrigerator oil elimination device and refrigerant replacing methodInfo
- Publication number
- JPH06174341A JPH06174341A JP32342192A JP32342192A JPH06174341A JP H06174341 A JPH06174341 A JP H06174341A JP 32342192 A JP32342192 A JP 32342192A JP 32342192 A JP32342192 A JP 32342192A JP H06174341 A JPH06174341 A JP H06174341A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- refrigerating machine
- machine oil
- oil
- removing device
- 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.)
- Withdrawn
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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/18—Refrigerant conversion
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は冷凍機油除去装置及び冷
媒交換方法に関し、とくにカーアコンなどの冷凍サイク
ルで冷媒の種類を交換する場合における冷凍機油除去装
置及び冷媒交換方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating machine oil removing device and a refrigerant exchanging method, and more particularly to a refrigerating machine oil removing device and a refrigerant exchanging method for exchanging a kind of refrigerant in a refrigerating cycle such as a caracon.
【０００２】[0002]
【従来の技術】カーエアコンなどの冷媒として用いられ
ている特定フロン（ＣＦＣ１２）は、オゾン層を破壊す
るものとしてその使用が全廃され、代替フロンを用いる
こととなった。このため、特定フロン用エアコンを代替
フロンが利用できるようにすることが必要となる。2. Description of the Related Art Specified chlorofluorocarbon (CFC12) used as a refrigerant for car air conditioners has been completely abolished because it destroys the ozone layer, and an alternative chlorofluorocarbon has been used. For this reason, it is necessary to make the specified CFC air conditioner available as an alternative CFC.
【０００３】ところで、冷媒を特定フロンから代替フロ
ンに交換するに際しては、回路内から旧冷媒を回収し、
かつ、回路内を洗浄しておく必要がある。By the way, when the refrigerant is exchanged from a specific CFC to an alternative CFC, the old refrigerant is recovered from the circuit,
Moreover, it is necessary to clean the inside of the circuit.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
空調機器回路のコンプレッサの出口に設けられているオ
イルセパレータは、冷凍機油と冷媒と互いに分離し、該
冷凍機油をコンプレッサに環流せしめるものであり、油
を回路から回収するためのものではなかった。このた
め、従来の空調機器の冷凍サイクルにおいて、冷凍機油
を回収するには、別途抜き取り作業を必要とし、また、
洗浄剤をもって回路内を洗浄しなければならない問題が
ある。However, the oil separator provided at the outlet of the compressor of the conventional air conditioner circuit separates refrigerating machine oil and refrigerant from each other and circulates the refrigerating machine oil to the compressor. It was not intended to recover oil from the circuit. Therefore, in the conventional refrigeration cycle of the air conditioner, separate collection work is required to collect the refrigerating machine oil.
There is a problem that the inside of the circuit must be cleaned with a cleaning agent.
【０００５】そこで、本発明の技術的課題は、上記欠点
に鑑み、冷凍サイクルの回路内の洗浄を必要とせず、従
来の特定フロンを代替フロンに交換することができる冷
凍機油除去装置及び冷媒交換方法を提供することであ
る。In view of the above-mentioned drawbacks, the technical problem of the present invention is to eliminate the need for cleaning the inside of the circuit of the refrigeration cycle and to replace the conventional specific CFC with an alternative CFC and a refrigerating machine oil removing device. Is to provide a method.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、冷凍機
油を含む冷媒を冷凍サイクル内で循環させる循環流路か
ら、前記冷凍機油を除去する冷凍機油除去装置であっ
て、前記循環流路の少なくとも一部と並行に配され前記
冷媒を受ける冷媒除去流路と、該冷媒除去流路に配さ
れ、前記冷媒から前記冷凍機油を分離するオイルセパレ
ータと、該オイルセパレータに設けられ、前記分離され
た冷凍機油を前記冷凍サイクル外へ排出する排出口とを
有することを特徴とする冷凍機油除去装置が得られる。According to the present invention, there is provided a refrigerating machine oil removing device for removing the refrigerating machine oil from a circulating flow path for circulating a refrigerant containing refrigerating machine oil in a refrigeration cycle, wherein the circulating flow path Of the refrigerant removal passage arranged in parallel with at least a part of the refrigerant, an oil separator arranged in the refrigerant removal passage, for separating the refrigerating machine oil from the refrigerant, and provided in the oil separator, the separation A refrigerating machine oil removing device is obtained, which has a discharge port for discharging the refrigerating machine oil thus taken out of the refrigeration cycle.
【０００７】また、本発明によれば、前記冷凍機油除去
装置において、前記循環サイクルは、前記冷凍サイクル
を構成する圧縮機の吐出口と凝縮器との間に配されてな
ることを特徴とする冷凍機油除去装置が得られる。Further, according to the present invention, in the refrigerating machine oil removing device, the circulation cycle is arranged between a discharge port and a condenser of a compressor which constitutes the refrigerating cycle. A refrigerating machine oil removing device is obtained.
【０００８】また、本発明によれば、前記冷凍機油除去
装置において、前記オイルセパレータは、前記冷媒除去
流路に、着脱自在に配されてなることを特徴とする冷凍
機油除去装置が得られる。Further, according to the present invention, in the refrigerating machine oil removing device, the refrigerating machine oil removing device is obtained in which the oil separator is detachably arranged in the refrigerant removing flow path.
【０００９】また、本発明によれば、前記いずれかの冷
凍機油除去装置を用いて、前記排出口から前記分離され
た冷凍機油を排出した後、前記冷凍サイクル中の前記冷
媒を抜去し、新たな冷凍機油を充填し、新たな冷媒を充
填することを特徴とする冷媒交換方法が得られる。Further, according to the present invention, after the separated refrigerating machine oil is discharged from the discharge port using any one of the refrigerating machine oil removing devices, the refrigerant in the refrigerating cycle is removed, It is possible to obtain a refrigerant exchange method which is characterized in that a fresh refrigerating machine oil is charged and a new refrigerant is charged.
【００１０】[0010]
【作用】回路中の冷凍機油と冷媒ガスとがオイルセパレ
ータを通過する際に、冷凍機油が冷媒ガスから分離され
回路外に排出またはトラップされる。When the refrigerating machine oil and the refrigerant gas in the circuit pass through the oil separator, the refrigerating machine oil is separated from the refrigerant gas and discharged or trapped outside the circuit.
【００１１】[0011]
【実施例】次に、本発明の一実施例を図面を参照して説
明する。An embodiment of the present invention will be described with reference to the drawings.
【００１２】図１に示すように、本実施例における空調
機器回路内の冷凍機油回収交換装置における冷凍サイク
ルは、冷媒蒸気を圧縮機１で圧縮し、凝縮器３で熱を高
温源に放出して液化させ、ついで膨張弁５で膨張させた
後に蒸発器７で低温源から熱を奪いつつ蒸発させて蒸気
とした後、圧縮機１に戻して再び循環させるものであ
る。As shown in FIG. 1, in the refrigerating cycle in the refrigerating machine oil recovery / exchange apparatus in the air conditioner circuit in this embodiment, the refrigerant vapor is compressed by the compressor 1 and the heat is released to the high temperature source by the condenser 3. The liquid is liquefied by the expansion valve 5, then expanded by the expansion valve 5, and then evaporated in the evaporator 7 while removing heat from the low temperature source to form vapor, which is then returned to the compressor 1 and circulated again.
【００１３】ここで、本実施例では、圧縮機１から凝縮
器３に繋がる流路Ｐ１と並列的に付加流路Ｐ２が設けら
れている。そして、この付加流路Ｐ２の途中にオイルセ
パレータ９が配されている。なお、このオイルセパレー
タ９は常時取付けておく必要はないから、着脱自在に設
け、通常運転時には取り外す。冷凍機油回収交換時に
は、オイルセパレータ９が冷媒ガスと冷凍機油とを分離
する。オイルセパレータ９は、公知の機構と同様に構成
されたものを用いるが、本発明に用いるオイルセパレー
タ９には、冷媒ガスと冷凍機油を分離した後に、冷凍機
油を回収するための取出口９１が設られている。Here, in this embodiment, an additional flow passage P2 is provided in parallel with the flow passage P1 connecting the compressor 1 to the condenser 3. The oil separator 9 is arranged in the middle of the additional flow path P2. Since the oil separator 9 does not have to be attached at all times, it is detachably provided and removed during normal operation. At the time of refrigerating machine oil recovery and replacement, the oil separator 9 separates the refrigerant gas from the refrigerating machine oil. The oil separator 9 has a structure similar to that of a known mechanism, but the oil separator 9 used in the present invention has an outlet 91 for collecting the refrigerating machine oil after separating the refrigerant gas and the refrigerating machine oil. It is set up.
【００１４】次に、本実施例の冷凍機油回収及び冷媒交
換方法について説明する。Next, the refrigerating machine oil recovery and refrigerant exchange method of this embodiment will be described.
【００１５】まず、冷凍機油の回収に先立ち、真空引き
を行う。次に、付加流路Ｐ２の流路を開く。そして空調
機のスイッチを入れて運転状態にする。圧縮機１からオ
イルセパレータ９に付加流路Ｐ２を介して冷凍油と冷媒
が送り込まれる。ここで、オイルセパレータ９は、冷媒
と冷凍機油と分離して、冷凍機油を取出口９０から流出
せしめ、冷媒を抜き取ることができる。この作業が終了
すると、付加流路Ｐ２を遮断して、オイルセパレータ９
を取り除き、通常の運転時と同様な流通状態に戻す。そ
の後、コンプレッサに、新しい冷媒用のオイルを入れ
て、真空引きによって新たな冷媒を充填する。First, prior to the collection of refrigerating machine oil, a vacuum is drawn. Next, the flow path of the additional flow path P2 is opened. Then, switch on the air conditioner to bring it into operation. Frozen oil and refrigerant are sent from the compressor 1 to the oil separator 9 via the additional flow path P2. Here, the oil separator 9 can separate the refrigerant and the refrigerating machine oil, allow the refrigerating machine oil to flow out from the outlet 90, and extract the refrigerant. When this work is completed, the additional flow path P2 is shut off and the oil separator 9
Are removed and the flow condition is returned to the same as in normal operation. After that, oil for a new refrigerant is put into the compressor, and a new refrigerant is filled by vacuuming.
【００１６】[0016]
【発明の効果】上記したように、本発明によれば、極め
て単純な構成により、冷凍サイクル中の冷凍油を除去回
収でき、新冷媒を充填することが可能となる。即ち、冷
凍サイクルの回路中を洗浄しなくともほぼ同等の効果が
得られる。これによって新たな冷媒に交換する際に回路
の洗浄に費やす工数を削減でき、また洗浄剤を用いなく
て済むので、コストの大幅な削減ができる。しかもこの
ように洗浄剤を使用しなくて済むので環境保護の見地か
らも好ましいものである。As described above, according to the present invention, the refrigeration oil in the refrigeration cycle can be removed and recovered and the new refrigerant can be filled with the extremely simple structure. That is, substantially the same effect can be obtained without cleaning the inside of the refrigeration cycle circuit. As a result, it is possible to reduce the number of man-hours required for cleaning the circuit when exchanging with a new refrigerant, and it is not necessary to use a cleaning agent, so that the cost can be significantly reduced. Moreover, since it is not necessary to use a cleaning agent in this way, it is preferable from the viewpoint of environmental protection.
【図１】本発明の空調機器回路内の冷凍機油回収交換方
法を実施するための装置の一実施例を示した説明図。FIG. 1 is an explanatory view showing an embodiment of an apparatus for carrying out a refrigerating machine oil recovery / exchange method in an air conditioning equipment circuit of the present invention.
１ 圧縮機 ３ 凝縮器 ５ 膨張弁 ７ 蒸発器 ９ オイルセパレータ ９１ 冷凍機油取出口 Ｐ１ 流路 Ｐ２ 付加流路 1 Compressor 3 Condenser 5 Expansion valve 7 Evaporator 9 Oil separator 91 Refrigerator oil outlet P1 flow path P2 Additional flow path
Claims (4)
循環させる循環流路から、前記冷凍機油を除去する冷凍
機油除去装置であって、前記循環流路の少なくとも一部
と並行に配され前記冷媒を受ける冷媒除去流路と、該冷
媒除去流路に配され、前記冷媒から前記冷凍機油を分離
するオイルセパレータと、該オイルセパレータに設けら
れ、前記分離された冷凍機油を前記冷凍サイクル外へ排
出する排出口とを有することを特徴とする冷凍機油除去
装置。1. A refrigerating machine oil removing device for removing the refrigerating machine oil from a circulating flow path for circulating a refrigerant containing refrigerating machine oil in a refrigeration cycle, the refrigerating machine oil removing device being arranged in parallel with at least a part of the circulating flow path. A refrigerant removal channel for receiving a refrigerant, an oil separator disposed in the refrigerant removal channel, for separating the refrigerating machine oil from the refrigerant, and provided in the oil separator, the separated refrigerating machine oil is out of the refrigeration cycle. A refrigerating machine oil removing device having a discharge port for discharging.
て、前記循環サイクルは、前記冷凍サイクルを構成する
圧縮機の吐出口と凝縮器との間に配されてなることを特
徴とする冷凍機油除去装置。2. The refrigerating machine oil removing apparatus according to claim 1, wherein the circulation cycle is arranged between a discharge port and a condenser of a compressor forming the refrigerating cycle. Removal device.
て、前記オイルセパレータは、前記冷媒除去流路に着脱
自在に配されてなることを特徴とする冷凍機油除去装
置。3. The refrigerating machine oil removing device according to claim 1, wherein the oil separator is detachably arranged in the refrigerant removing flow path.
除去装置を用いて、前記排出口から前記分離された冷凍
機油を排出した後、前記冷凍サイクル中の前記冷媒を抜
去し、新たな冷凍機油を充填し、新たな冷媒を充填する
ことを特徴とする冷媒交換方法。4. The refrigerating machine oil removing device according to claim 1, after discharging the separated refrigerating machine oil from the discharge port, the refrigerant in the refrigerating cycle is removed, and A method for exchanging a refrigerant, which comprises charging a new refrigerating machine oil and then a new refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32342192A JPH06174341A (en) | 1992-12-02 | 1992-12-02 | Refrigerator oil elimination device and refrigerant replacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32342192A JPH06174341A (en) | 1992-12-02 | 1992-12-02 | Refrigerator oil elimination device and refrigerant replacing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06174341A true JPH06174341A (en) | 1994-06-24 |
Family
ID=18154501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32342192A Withdrawn JPH06174341A (en) | 1992-12-02 | 1992-12-02 | Refrigerator oil elimination device and refrigerant replacing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06174341A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003193974A (en) * | 2001-12-21 | 2003-07-09 | Sanyo Electric Co Ltd | Two-stage compression refrigerating machine, and filling method for refrigerating machine oil and refrigerant |
| CN108168163A (en) * | 2018-01-23 | 2018-06-15 | 海信（山东）冰箱有限公司 | A kind of refrigeration system and refrigeration equipment |
-
1992
- 1992-12-02 JP JP32342192A patent/JPH06174341A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003193974A (en) * | 2001-12-21 | 2003-07-09 | Sanyo Electric Co Ltd | Two-stage compression refrigerating machine, and filling method for refrigerating machine oil and refrigerant |
| CN108168163A (en) * | 2018-01-23 | 2018-06-15 | 海信（山东）冰箱有限公司 | A kind of refrigeration system and refrigeration equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000307 |