JP2000070652A - Refrigerant recovery apparatus, refrigerant recovery method and refrigerant recovery system - Google Patents
Refrigerant recovery apparatus, refrigerant recovery method and refrigerant recovery systemInfo
- Publication number
- JP2000070652A JP2000070652A JP10245595A JP24559598A JP2000070652A JP 2000070652 A JP2000070652 A JP 2000070652A JP 10245595 A JP10245595 A JP 10245595A JP 24559598 A JP24559598 A JP 24559598A JP 2000070652 A JP2000070652 A JP 2000070652A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- refrigerant recovery
- bag
- recovery device
- activated carbon
- 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
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
-
- 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
- F25B2345/006—Details for charging or discharging refrigerants; Service stations therefor characterised by charging or discharging valves
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷凍機などの冷凍
装置や自動車などの冷凍回路中の冷媒を回収するための
冷媒回収装置、冷媒回収方法および冷媒回収システムに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant recovery device, a refrigerant recovery method, and a refrigerant recovery system for recovering a refrigerant in a refrigeration apparatus such as a refrigerator or a refrigeration circuit of an automobile.
【０００２】[0002]
【従来の技術】従来、冷凍機などの冷凍装置の冷媒とし
て用いられているものとして、オゾン層を破壊する危険
性のあるジクロロジフルオロメタン（Ｒ−１２）や共沸
混合冷媒のＲ−１２と１，１−ジフルオロエタン（Ｒ−
１５２ａ）とからなるＲ−５００や、オゾン層を破壊す
る危険性は少ないが地球温暖化効果が高い塩素基の含有
量を減少させた代替冷媒として、例えば、クロロジフル
オロメタン（ＨＣＦＣ−２２）、塩素基を含まない冷
媒、例えば、ジフルオロメタン（ＨＦＣ−３２、Ｒ−３
２）、トリフルオロメタン（ＨＦＣ−２３、Ｒ−２
３）、ペンタフルオロエタン（ＨＦＣ−１２５、Ｒ−１
２５）、１，１，１，２−テトラフルオロエタン（ＨＦ
Ｃ−１３４ａ、Ｒ−１３４ａ）、１，１，１−トリフル
オロエタン（ＨＦＣ−１４３ａ、Ｒ−１４３ａ）、塩素
基と水素を含まないフルオロカーボン系冷媒（ＦＣ系冷
媒）、あるいはこれらの混合物や、プロパン、ブタン、
ペンタンなどの可燃性のある炭化水素類や、アンモニア
などがある。2. Description of the Related Art Conventionally, dichlorodifluoromethane (R-12) or an azeotropic mixed refrigerant R-12, which has a risk of destroying the ozone layer, has been used as a refrigerant in a refrigerating apparatus such as a refrigerator. 1,1-difluoroethane (R-
152a), and as an alternative refrigerant having a reduced danger of destruction of the ozone layer but a high chlorine-containing content that has a high global warming effect, for example, chlorodifluoromethane (HCFC-22), A refrigerant containing no chlorine group, for example, difluoromethane (HFC-32, R-3
2), trifluoromethane (HFC-23, R-2
3), pentafluoroethane (HFC-125, R-1
25), 1,1,1,2-tetrafluoroethane (HF
C-134a, R-134a), 1,1,1-trifluoroethane (HFC-143a, R-143a), a fluorocarbon-based refrigerant containing no chlorine group and hydrogen (FC-based refrigerant), or a mixture thereof, Propane, butane,
There are combustible hydrocarbons such as pentane, and ammonia.
【０００３】これらの冷媒を用いた家庭用冷蔵庫、エア
コンデイショナーや産業用冷凍機器あるいは自動車など
が使用済みなどの理由でその冷凍回路から冷媒を回収す
る必要が生じた際は、公知の冷媒回収機を用いて冷媒を
吸引して冷凍回路外へだし、それを液化してボンベなど
に入れる方法が行われている。図４および図５は、従来
の冷媒回収方法を示す説明図である。図４および図５に
おいて、１は圧縮機２を搭載した冷蔵庫である。圧縮機
２には凝縮器３、キャピラリチューブ４及び蒸発器５が
順次接続され、冷凍回路を構成している。この冷凍回路
中の圧縮機２に冷媒回収袋６が連結されている。冷媒回
収袋６には、冷凍回路に接続するための管路７が接続さ
れており、冷凍回路の圧縮機２へ冷媒を封入するための
封入パイプ８の先に管路７の一端が連結されている。９
は冷媒回収袋６に管路７を接続するための接続具であ
り、１０は開閉弁である。When it becomes necessary to recover refrigerant from a refrigeration circuit of a home refrigerator, an air conditioner, an industrial refrigeration apparatus, an automobile, or the like using these refrigerants, a known refrigerant recovery method is used. A method has been used in which a refrigerant is sucked out of a refrigeration circuit using a machine, liquefied and put into a cylinder or the like. 4 and 5 are explanatory views showing a conventional refrigerant recovery method. 4 and 5, reference numeral 1 denotes a refrigerator on which the compressor 2 is mounted. A condenser 3, a capillary tube 4, and an evaporator 5 are sequentially connected to the compressor 2 to form a refrigeration circuit. A refrigerant recovery bag 6 is connected to the compressor 2 in the refrigeration circuit. The refrigerant recovery bag 6 is connected to a pipe 7 for connecting to a refrigeration circuit, and one end of the pipe 7 is connected to the end of a sealing pipe 8 for charging the refrigerant into the compressor 2 of the refrigeration circuit. ing. 9
Is a connector for connecting the pipe line 7 to the refrigerant recovery bag 6, and 10 is an on-off valve.
【０００４】冷蔵庫１が使用済みになるなどの理由で冷
凍回路中の冷媒を回収する必要が生じた場合は、上記の
ようにして圧縮機２に冷媒回収袋６を連結して開閉弁１
０を開けると、冷媒は矢印で示した方向に流れて冷媒回
収袋６内に入り、冷凍回路中の実質的に全ての冷媒を冷
媒回収袋６内に回収する。冷媒回収袋６内に冷媒を回収
した後、冷媒回収袋６を取り外し、真空ポンプ、ボンベ
などを備えた後述する公知の冷媒回収機にこの冷媒回収
袋６を接続して、上記冷媒回収機の真空ポンプを作動し
て冷媒を吸引して冷媒回収袋６外へだし、それを液化し
てボンベに入れて回収する。しかし、この方法は、冷媒
回収袋６内に冷媒を入れると大きく膨らんで容積が大き
くなって取り扱い難くなる欠点があり、また繰り返して
冷媒回収袋６を使用すると破れる問題がある。If it becomes necessary to recover the refrigerant in the refrigeration circuit because the refrigerator 1 has become used, etc., the refrigerant recovery bag 6 is connected to the compressor 2 as described above, and the open / close valve 1 is opened.
When 0 is opened, the refrigerant flows in the direction indicated by the arrow and enters the refrigerant recovery bag 6, and collects substantially all the refrigerant in the refrigeration circuit into the refrigerant recovery bag 6. After recovering the refrigerant in the refrigerant recovery bag 6, the refrigerant recovery bag 6 is removed, and the refrigerant recovery bag 6 is connected to a known refrigerant recovery machine described later provided with a vacuum pump, a cylinder, and the like. The vacuum pump is operated to suck the refrigerant and out of the refrigerant recovery bag 6, liquefied and put into a cylinder for recovery. However, this method has a drawback that when the refrigerant is put into the refrigerant recovery bag 6, the refrigerant expands greatly and the volume becomes large, making it difficult to handle, and there is a problem that the refrigerant recovery bag 6 is broken when it is used repeatedly.
【０００５】また、使用済みの家庭用冷蔵庫などを冷媒
回収機のある場所に多数集めて処理する場合はよいが、
冷凍装置が遠方の地域にある場合や、産業用冷凍機器、
特にメデイカル機器のような特殊冷媒を封入した機器で
は収集自体に困難が伴うとともに、大きくて重い冷媒回
収機を遠方まで運搬するのは大変であり、また、大きく
膨らんで容積が大きくなった冷媒回収袋６を冷媒回収機
のある場所まで持ち帰るのも大変であり、手間がかか
り、コストアップになる問題があった。[0005] In addition, it is good to collect a large number of used home refrigerators and the like in a place where a refrigerant recovery machine is located, and to process them.
If the refrigeration equipment is located in a remote area, industrial refrigeration equipment,
In particular, collection of the equipment itself containing special refrigerants, such as medical equipment, is difficult, and it is difficult to transport a large and heavy refrigerant recovery machine to a distant place. It is also difficult to bring the bag 6 back to the place where the refrigerant recovery machine is located, which is troublesome and increases the cost.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記の問題を
解決するものであり、本発明の第１の目的は、冷媒を収
容したボンベなどに連結して冷媒を回収したり、使用済
みなどの家庭用冷蔵使用済みなどの家庭用冷蔵庫や産業
用冷凍機器などの冷凍装置あるいは自動車などの冷凍回
路に存在する冷媒を容易に低コストで回収できる、小型
でポータブルな冷媒回収装置を提供することであり、本
発明の第２の目的は、その冷媒回収装置を用いて冷凍装
置などの冷凍回路から冷媒を容易に低コストで回収する
方法を提供することであり、本発明の第３の目的は、使
用済みなどの家庭用冷蔵庫などの冷凍回路に存在する冷
媒を冷媒回収装置に回収した後、この冷媒回収装置に回
収した冷媒を取り出して回収するとともに、この冷媒回
収装置を再使用できるようにした冷媒回収システムを提
供することである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to connect a refrigerant to a cylinder or the like containing the refrigerant to recover the refrigerant, to use the refrigerant or the like. To provide a small and portable refrigerant recovery device that can easily and inexpensively recover refrigerant present in a refrigeration system such as a home refrigerator or industrial refrigeration equipment such as a used refrigerator or an industrial refrigeration equipment. A second object of the present invention is to provide a method for easily and inexpensively recovering a refrigerant from a refrigeration circuit such as a refrigeration system using the refrigerant recovery apparatus. Recovers the refrigerant present in a refrigeration circuit such as a home refrigerator, which has been used, into a refrigerant recovery device, then removes and recovers the recovered refrigerant in the refrigerant recovery device, and reuses the refrigerant recovery device. To provide a refrigerant recovery system in so that.
【０００７】[0007]
【課題を解決するための手段】すなわち、上記課題を解
決するため請求項１の発明は、密閉容器内に固体吸着剤
を収納するとともに、この密閉容器内部を真空引きした
ことを特徴とする冷媒回収装置である。According to a first aspect of the present invention, there is provided a refrigerant in which a solid adsorbent is contained in a closed container and the inside of the closed container is evacuated. It is a recovery device.
【０００８】本発明の請求項２の発明は、請求項１記載
の冷媒回収装置において、前記密閉容器内に、通気性部
材を備えることを特徴とする。According to a second aspect of the present invention, in the refrigerant recovery apparatus according to the first aspect, a gas permeable member is provided in the closed container.
【０００９】本発明の請求項３の発明は、請求項１ある
いは請求項２記載の冷媒回収装置において、前記密閉容
器は、先端に締付け孔開け機能付バルブが設置された管
路を備えることを特徴とする。According to a third aspect of the present invention, in the refrigerant recovery apparatus according to the first or second aspect, the closed vessel has a pipe provided with a valve having a fastening hole opening function at a tip thereof. Features.
【００１０】本発明の請求項４の発明は、密閉容器内に
固体吸着剤を収納するとともに、この密閉容器内部を真
空引きした冷媒回収装置を冷凍回路に接続し、この冷凍
回路の冷媒を吸着して回収することを特徴とする冷媒回
収方法である。According to a fourth aspect of the present invention, a solid adsorbent is accommodated in a closed vessel, and a refrigerant recovery device in which the inside of the closed vessel is evacuated is connected to a refrigeration circuit to adsorb the refrigerant in the refrigeration circuit. And recovering the refrigerant.
【００１１】本発明の請求項５の発明は、冷媒を回収し
た冷媒回収装置の密閉容器をポンプに接続し、固体吸着
剤に吸着した冷媒を脱着することを特徴とする冷媒回収
システムである。According to a fifth aspect of the present invention, there is provided a refrigerant recovery system wherein a closed vessel of a refrigerant recovery device for recovering a refrigerant is connected to a pump to desorb the refrigerant adsorbed on the solid adsorbent.
【００１２】[0012]
【発明の実施の形態】以下、図面を用いて本発明の実施
の形態を説明する。図１は、冷蔵庫の冷媒回路に本発明
の一実施例を示す冷媒回収装置を連結した状態を示す説
明図である。図１において図４、図５と同じ符号のもの
は同じものを示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a state in which a refrigerant recovery device according to one embodiment of the present invention is connected to a refrigerant circuit of a refrigerator. In FIG. 1, the same reference numerals as those in FIGS. 4 and 5 indicate the same components.
【００１３】図１において、本発明の冷媒回収装置１１
は、先端に公知の締付け孔開け機能付バルブ１２が設置
された管路７を接続した開閉可能な密閉容器１３と、冷
凍回路１４中の冷媒を吸着する固体吸着剤としての粉粒
状活性炭１５と、この粉粒状活性炭１５を外部に漏らさ
ないように包んで保持するための通気性部材としての通
気性不織布製袋１６などから構成されており、この袋１
６の中に粉粒状活性炭１５を包んで保持して密閉容器１
３中に収納してある。本発明の冷媒回収装置１１は後述
するように冷媒を回収する際は密閉容器１３の内部の気
体を真空ポンプなどでできるだけ吸引するという、いわ
ゆる真空引きして用いる。この実施例では通気性部材と
して通気性不織布製袋１６を用いたが、本発明で用いる
通気性部材としては通気性不織布製袋１６に限定され
ず、前記固体吸着剤を保持して外部に漏らさないもので
あれば使用でき、具体的には、例えば、通気性のある不
織布、織物、編み物、金網、メッシュ、フィルタなどお
よびこれらの組み合わせを挙げることができる。また、
固形吸着剤を固形化、ブロック化すれば不要とすること
もできる。In FIG. 1, a refrigerant recovery apparatus 11 according to the present invention is shown.
Is an openable and closable container 13 to which a pipe 7 having a well-known valve 12 having a fastening hole formed therein is connected, and a granular activated carbon 15 as a solid adsorbent for adsorbing a refrigerant in a refrigeration circuit 14. And a bag 16 made of a gas-permeable nonwoven fabric as a gas-permeable member for wrapping and holding the powdered granular activated carbon 15 so as not to leak outside.
6 is a closed container 1 in which the granular activated carbon 15 is wrapped and held.
3 inside. As will be described later, the refrigerant recovery apparatus 11 of the present invention uses a so-called vacuum to collect the refrigerant inside the sealed container 13 as much as possible with a vacuum pump or the like when recovering the refrigerant. In this embodiment, the air-permeable nonwoven bag 16 is used as the air-permeable member. However, the air-permeable member used in the present invention is not limited to the air-permeable nonwoven bag 16, and the solid adsorbent is retained and leaked to the outside. Any non-woven fabric can be used, and specific examples thereof include non-woven fabrics, woven fabrics, knitted fabrics, wire meshes, meshes, filters, and the like, and combinations thereof. Also,
If the solid adsorbent is solidified or blocked, it can be made unnecessary.
【００１４】図１のＡに、通気性不織布製袋１６などの
１部を拡大して説明する。通気性不織布製袋１６の孔１
６Ａの目開きｄを、空気、冷媒などは通過するが粉粒状
活性炭１５は外部に漏らさないような大きさにしてあ
る。従って不織布製袋１６の中に包まれた粉粒状活性炭
１５は不織布製袋１６の外部に漏れず、粉粒状活性炭１
５を不織布製袋１６内に保持することができる。不織布
製袋１６の中に粉粒状活性炭１５を包んでそれを収納し
た密閉容器１３を真空ポンプなどで真空引きすると、不
織布製袋１６の内の空気、冷媒などや、不織布製袋１６
の内の粉粒状活性炭１５に吸着された空気、冷媒などは
脱着されて不織布製袋１６の外にでて、次いで密閉容器
１３の外にでる。FIG. 1A is an enlarged view of a part of the bag 16 made of a breathable nonwoven fabric. Hole 1 in bag 16 made of breathable nonwoven fabric
The opening d of 6A is sized so that air, refrigerant and the like pass through, but the granular activated carbon 15 does not leak outside. Therefore, the granular activated carbon 15 wrapped in the nonwoven fabric bag 16 does not leak to the outside of the nonwoven fabric bag 16 and the granular activated carbon 1
5 can be held in a nonwoven fabric bag 16. When the sealed container 13 containing the powdered and granular activated carbon 15 wrapped in the nonwoven fabric bag 16 and evacuating it by a vacuum pump or the like is evacuated, the air and the refrigerant in the nonwoven fabric bag 16 and the nonwoven fabric bag 16 are removed.
The air, refrigerant, and the like adsorbed on the granular activated carbon 15 are desorbed and out of the nonwoven fabric bag 16, and then out of the closed container 13.
【００１５】密閉容器１３は上部の蓋１３Ａと本体１３
Ｂから構成されており、蓋１３Ａと本体１３Ｂは接続具
１７で密閉して接続できるようになっている。接続具１
７を付けたり外したりすることにより蓋１３Ａは開閉可
能になっている。蓋１３Ａを開ければ粉粒状活性炭１５
を包んだ不織布製袋１６を密閉容器１３から交換などの
目的で取り出すことができる。この例では管路７は蓋１
３Ａの中央部に接続されている。１８は管路７に設けら
れた開閉弁、１９は圧力計である。The closed container 13 has an upper cover 13A and a main body 13A.
B, so that the lid 13A and the main body 13B can be hermetically connected by a connecting tool 17. Connector 1
The lid 13A can be opened and closed by attaching and removing the cover 7A. If the lid 13A is opened, the granular activated carbon 15
Can be taken out of the closed container 13 for the purpose of replacement or the like. In this example, the conduit 7 is the lid 1
It is connected to the center of 3A. Reference numeral 18 denotes an on-off valve provided in the pipeline 7 and 19 denotes a pressure gauge.
【００１６】本発明で用いる締付け孔開け機能付バルブ
１２は特に限定されず、例えば公知のものを用いること
ができる。図２（ａ）は図１に示した締付け孔開け機能
付バルブ１２の一具体例であるプッツンバルブ１２Ａを
示す説明図である。本発明においては例えば回路１４の
パイプ径１／２インチ、３／８インチなどに応じた適当
な大きさの市販のものを用いることができる。市販の締
付け孔開け機能付バルブ１２の具体例としては、日本で
は富士工機社製のもの、プッツンバルブの具体例として
は、ＲＯＢＩＮＡＩＲ社製の型番ＥＡ４０１ＡおよびＥ
Ａ４０１Ａ、ピアスペンチプッツンバルブの具体例とし
ては、ＲＥＦＣＯ社製の型番１４２１０スタンダードな
どを挙げることができる。The valve 12 with a fastening hole opening function used in the present invention is not particularly limited, and for example, a known valve can be used. FIG. 2A is an explanatory view showing a Putson valve 12A which is a specific example of the valve 12 with a fastening hole opening function shown in FIG. In the present invention, for example, a commercially available product having an appropriate size according to the pipe diameter of 1/2 inch, 3/8 inch or the like of the circuit 14 can be used. Specific examples of commercially available valves 12 having a fastening hole opening function include those manufactured by Fuji Koki Co., Ltd. in Japan, and specific examples of putzun valves include model numbers EA401A and E manufactured by ROBINAIR.
As a specific example of A401A and a pierce pent chip valve, model number 14210 standard manufactured by REFCO can be mentioned.
【００１７】プッツンバルブ１２Ａは回路１４を上下か
ら挟み込んで回路１４をしっかり固定するための半円状
固定部３１を備えた下部３４と、半円状固定部３２を備
えた上部３３からなり、半円状固定部３１と半円状固定
部３２の表面にはゴムパッキン３１Ａ、３２Ａがそれぞ
れライニングされている。上部３３と下部３４の両端部
には蝶ネジ３５が設けられており、回路１４を半円状固
定部３１と半円状固定部３２に挟み込んだ後この蝶ネジ
３５を締め込んで回路１４をしっかりと固定する。上部
３３の上面には上方に延在する凸部３６が一体に形成さ
れており、この凸部３６の軸受け３９内に、回路１４に
小孔を開けるために先端にニードル３７を装着したバル
ブ軸３８が気密状態に装着されている。４０はバルブ軸
３８を下方へ螺子込んだり上方へ移動させるためのハン
ドルである。軸受け３９の下部の内径はバルブ軸３８の
下部の外径より大きくして、軸受け３９の下部とバルブ
軸３８の下部との間に空隙４１を形成する。そして凸部
３６一側面に冷媒回収装置１１の管路７を接続して前記
空隙４１に通じるようにしてある。The Putson valve 12A comprises a lower portion 34 having a semicircular fixing portion 31 for firmly fixing the circuit 14 by sandwiching the circuit 14 from above and below, and an upper portion 33 having a semicircular fixing portion 32. Rubber packings 31A and 32A are lined on the surfaces of the circular fixing portion 31 and the semicircular fixing portion 32, respectively. Thumbscrews 35 are provided at both ends of the upper part 33 and the lower part 34. After the circuit 14 is sandwiched between the semicircular fixing parts 31 and the semicircular fixing parts 32, the thumbscrew 35 is tightened to fix the circuit 14. Securely fix. A convex portion 36 extending upward is integrally formed on the upper surface of the upper portion 33, and a valve shaft having a needle 37 attached to a tip thereof for making a small hole in the circuit 14 is formed in a bearing 39 of the convex portion 36. 38 are mounted in an airtight state. Reference numeral 40 denotes a handle for screwing the valve shaft 38 downward or moving it upward. The inner diameter of the lower part of the bearing 39 is made larger than the outer diameter of the lower part of the valve shaft 38 to form a gap 41 between the lower part of the bearing 39 and the lower part of the valve shaft 38. The pipe 7 of the refrigerant recovery device 11 is connected to one side surface of the protrusion 36 so as to communicate with the space 41.
【００１８】冷蔵庫１が使用済みになるなどの理由で、
冷凍回路１４中の冷媒を回収する必要が生じた場合は、
先ず、粉粒状活性炭１５を入れた不織布製袋１６を収納
した密閉容器１３を図示しない真空ポンプなどで真空引
きして、密閉容器１３の中の空気、冷媒などや、粉粒状
活性炭１５に吸着された空気、冷媒などを除き、真空引
きした密閉容器１３を冷凍回路１４に下記のようにして
連結して冷媒を回収する。For example, the refrigerator 1 becomes used,
If it becomes necessary to recover the refrigerant in the refrigeration circuit 14,
First, the closed container 13 containing the nonwoven fabric bag 16 containing the granular activated carbon 15 is evacuated by a vacuum pump or the like (not shown), and is adsorbed on the air, the refrigerant, and the like in the closed container 13 and the granular activated carbon 15. Except for the air, refrigerant, etc., the evacuated closed container 13 is connected to the refrigeration circuit 14 as follows to collect the refrigerant.
【００１９】すなわち、管路７の先端に設置したプッツ
ンバルブ１２Ａを用い、回路１４を半円状固定部３１と
半円状固定部３２に挟み込んで蝶ネジ３５を締め込んで
回路１４をしっかりと固定する。その後、ハンドル４０
を回してバルブ軸３８を下方に移動してその先端に装着
したニードル３７の先端が回路１４の管壁を破って小孔
を開けるように操作する。この時点ではまだ冷媒が小孔
からでてこないが、ハンドル４０を逆に回してバルブ軸
３８を上方に少し移動すると小孔とニードル３７の間に
間隙ができ、この間隙から冷媒が回路１４の外にでて前
記空隙４１を経て管路７に入り、管路７に入った冷媒は
矢印で示した方向に流れて、開けられた開閉弁１８を経
て不織布製袋１６の中の粉粒状活性炭１５に吸着され、
回収される。本発明の真空引きした冷媒回収装置１１を
用いて冷媒を吸着するとき、冷凍回路は止めておいても
作動させてもよいが、作動させた方が好ましい。また、
冷媒を吸着するとき本発明の冷媒回収装置１１を外部お
よび／または内部から冷却することが好ましい。That is, the circuit 14 is sandwiched between the semi-circular fixing portions 31 and the semi-circular fixing portion 32 by using the Putzun valve 12A installed at the end of the conduit 7, and the thumb screw 35 is tightened to securely connect the circuit 14. Fix it. Then, handle 40
Is turned to move the valve shaft 38 downward so that the distal end of the needle 37 attached to the distal end breaks the tube wall of the circuit 14 to open a small hole. At this point, the refrigerant has not yet come out of the small hole. However, when the handle 40 is turned in the reverse direction and the valve shaft 38 is slightly moved upward, a gap is formed between the small hole and the needle 37, and the refrigerant flows from the circuit 14 through the gap. The refrigerant enters the pipe 7 through the gap 41 and flows into the pipe 7 in the direction indicated by the arrow, and passes through the open / close valve 18 to open the activated carbon powder in the nonwoven fabric bag 16. 15 adsorbed,
Collected. When the refrigerant is adsorbed by using the evacuated refrigerant recovery device 11 of the present invention, the refrigeration circuit may be stopped or operated, but is preferably operated. Also,
When the refrigerant is adsorbed, the refrigerant recovery device 11 of the present invention is preferably cooled from the outside and / or the inside.
【００２０】上記のように真空引きせず、密閉容器１３
内の圧力が大気圧であっても冷凍回路中の冷媒を粉粒状
活性炭１５に吸着させることができるが、本発明におい
ては真空引きを行うことが好ましい。真空引きすること
により効率良く、短時間で冷媒を粉粒状活性炭１５に吸
着することができる（例えば、家庭用冷蔵庫の場合、約
１〜２分で冷凍回路中の全冷媒を吸着できる）。真空引
きした時の真空度は特に限定されないが、効率良く、短
時間で冷媒を粉粒状活性炭１５に吸着できるような高真
空度にすることが好ましい。As described above, the closed container 13 is not evacuated.
Although the refrigerant in the refrigeration circuit can be adsorbed on the granular activated carbon 15 even when the internal pressure is atmospheric pressure, it is preferable to perform vacuuming in the present invention. By evacuating, the refrigerant can be efficiently adsorbed to the granular activated carbon 15 in a short time (for example, in the case of a household refrigerator, all the refrigerant in the refrigeration circuit can be adsorbed in about 1 to 2 minutes). The degree of vacuum at the time of evacuation is not particularly limited, but is preferably set to a high degree of vacuum such that the refrigerant can be efficiently adsorbed to the granular activated carbon 15 in a short time.
【００２１】本発明で用いる固体吸着剤としては、例え
ば、粉末状、粒状、繊維状、あるいは成型した形状の、
活性炭、ガス吸着樹脂、粘土、活性アルミナ、モレキュ
ラーシーブ、ボーンチャー、白土、シリカゲルまたはこ
れらの中から選択される２つ以上の混合物を挙げること
ができる。これらの中でも活性炭は好ましく使用でき
る。粉末活性炭でも造粒活性炭でもよく、やし殻、石
炭、石油系ピッチ、オイルカーボンなどの炭素質材料を
原料とするものを用いることができる。活性炭の中でも
微粉末活性炭は冷媒の吸着性に優れるなどからより好ま
しく使用できる。粉粒状活性炭のＢＥＴ法による比表面
積は、４００ｍ2 ／ｇ以上、好ましくは、１０００ｍ2
／ｇ以上、特に好ましくは、２０００ｍ2 ／ｇ以上であ
る。The solid adsorbent used in the present invention includes, for example, powder, granular, fibrous, or molded forms.
Activated carbon, gas-adsorbing resin, clay, activated alumina, molecular sieve, bone char, clay, silica gel, or a mixture of two or more selected from these can be mentioned. Among these, activated carbon can be preferably used. Powdered activated carbon or granulated activated carbon may be used, and those made from a carbonaceous material such as coconut shell, coal, petroleum pitch, or oil carbon can be used. Among the activated carbons, fine powdered activated carbon can be more preferably used because of its excellent refrigerant adsorptivity. BET specific surface area of the powdery or granular activated carbon, 400 meters 2 / g or more, preferably, 1000 m 2
/ G or more, particularly preferably 2000 m 2 / g or more.
【００２２】本発明の冷媒回収装置１１に用いた前記粉
粒状活性炭１５は、冷媒の種類によっても異なるが、例
えば冷媒がＲ１３４ａの場合は、粉粒状活性炭１５の自
重とほぼ同じ程度の重量の冷媒を吸着できるので、本発
明の冷媒回収装置１１は構成が簡単である上、装置全体
を小型化、軽量化して、容易に運搬でき、取り扱いや操
作が簡単になる。The granular activated carbon 15 used in the refrigerant recovery apparatus 11 of the present invention varies depending on the type of the refrigerant. For example, when the refrigerant is R134a, the refrigerant having a weight approximately equal to its own weight of the granular activated carbon 15 is used. Therefore, the refrigerant recovery apparatus 11 of the present invention has a simple configuration, and the entire apparatus can be reduced in size and weight, can be easily transported, and can be easily handled and operated.
【００２３】図３は、冷媒を回収した本発明の冷媒回収
装置を公知の冷媒回収機に連結した状態を示す説明図で
ある。図３において、図１と同じ符号のものは同じもの
を示す。本発明の冷媒回収装置１１の密閉容器１３内
に、冷凍回路中の冷媒を回収した後（密閉容器１３内の
粉粒状活性炭１５にその最大冷媒吸着量あるいはそれ以
上の量の冷媒を吸着などさせて回収した場合、あるいは
粉粒状活性炭１５にその最大冷媒吸着量以下の冷媒を吸
着させて回収した場合などを含む）、冷媒回収装置１１
および締付け孔開け機能付バルブ１２を取り外し、図３
に示したように、真空ポンプ１９、ボンベ２０などを備
えた公知の冷媒回収機２１の真空ポンプ１９に冷媒回収
装置１１の管路７の一端を接続して、真空ポンプ１９を
作動して密閉容器１３内に回収された冷媒を吸引し、粉
粒状活性炭１５に吸着した冷媒を脱着し、液化してボン
ベ２０に入れて回収する。この時、図示しない加熱手段
により冷媒回収装置１１の粉粒状活性炭１５を直接的に
あるいは間接的に加熱して、冷媒を脱着し易くしてやっ
てもよい。このようにして冷媒をボンベ２０に回収した
後、冷媒回収装置１１の密閉容器１３内は真空引きされ
た状態になっているので、そのままの真空状態を維持す
ればこの冷媒回収装置１１を次の冷媒回収に容易に使用
することができる。FIG. 3 is an explanatory view showing a state where the refrigerant recovery device of the present invention which has recovered the refrigerant is connected to a known refrigerant recovery machine. In FIG. 3, components having the same reference numerals as those in FIG. 1 indicate the same components. After the refrigerant in the refrigeration circuit is recovered in the closed vessel 13 of the refrigerant recovery apparatus 11 of the present invention (the powdered granular activated carbon 15 in the closed vessel 13 is allowed to adsorb the refrigerant of the maximum refrigerant amount or more than that amount). The refrigerant recovery device 11 or the powdered granular activated carbon 15 adsorbs and collects the refrigerant having the maximum refrigerant adsorption amount or less).
3 and the valve 12 with a fastening hole opening function is removed, and FIG.
As shown in the figure, one end of the pipe line 7 of the refrigerant recovery device 11 is connected to a vacuum pump 19 of a known refrigerant recovery machine 21 having a vacuum pump 19, a cylinder 20, and the like. The refrigerant collected in the container 13 is sucked, the refrigerant adsorbed on the granular activated carbon 15 is desorbed, liquefied and collected in a cylinder 20 for collection. At this time, the granular activated carbon 15 of the refrigerant recovery device 11 may be heated directly or indirectly by a heating means (not shown) to facilitate the desorption of the refrigerant. After collecting the refrigerant in the cylinder 20 in this manner, the inside of the closed container 13 of the refrigerant recovery device 11 is in a evacuated state. It can be easily used for refrigerant recovery.
【００２４】なお、本発明は上記実施形態に限定される
ものではないので、特許請求の範囲に記載の趣旨から逸
脱しない範囲で各種の変形実施が可能である。Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.
【００２５】[0025]
【発明の効果】本発明の冷媒回収装置は、構成が簡単で
ある上、装置全体を小型化、軽量化して、容易に運搬で
き、取り扱いや操作が簡単であり、使用済みなどの家庭
用冷蔵庫や産業用冷凍機器などの冷凍装置あるいは自動
車などの冷凍回路に存在する冷媒を回収できる。本発明
の冷媒回収装置は、その他に冷媒を収容したボンベやタ
ンク、ウレタンフォームの発泡剤（冷媒と同じフロンな
どが発泡剤として使用されている）を回収する装置など
に連結して冷媒や発泡剤を回収するのに用いることがで
きる。The refrigerant recovery apparatus according to the present invention has a simple structure, and the entire apparatus is reduced in size and weight, can be easily transported, and is easy to handle and operate. Refrigerant existing in a refrigeration apparatus such as a refrigerator or an industrial refrigeration apparatus or a refrigeration circuit of an automobile can be recovered. The refrigerant recovery device of the present invention may be connected to a cylinder or a tank containing a refrigerant, a device for recovering a foaming agent of urethane foam (the same fluorocarbon or the like as the refrigerant is used as a foaming agent), and the like. Can be used to recover the agent.
【００２６】本発明の冷媒回収方法により、冷凍装置な
どの冷凍回路から冷媒を容易に低コストで回収できる。According to the refrigerant recovery method of the present invention, refrigerant can be easily recovered at low cost from a refrigeration circuit such as a refrigeration system.
【００２７】本発明の冷媒回収システムにより、使用済
みなどの家庭用冷蔵庫などの冷凍回路に存在する冷媒を
冷媒回収装置に回収した後、この冷媒回収装置に回収し
た冷媒を取り出して回収するとともに、この冷媒回収装
置を再使用できる。With the refrigerant recovery system of the present invention, the refrigerant present in a refrigeration circuit such as a used home refrigerator is recovered by a refrigerant recovery device, and then the refrigerant recovered by the refrigerant recovery device is taken out and recovered. This refrigerant recovery device can be reused.
【図１】 冷蔵庫の冷媒回路に本発明の冷媒回収装置を
連結した状態を示す説明図である。FIG. 1 is an explanatory diagram showing a state in which a refrigerant recovery device of the present invention is connected to a refrigerant circuit of a refrigerator.
【図２】 （ａ）は図１に示した締付け孔開け機能付バ
ルブの一具体例であるプッツンバルブを示す説明図であ
り、（ｂ）はこのプッツンバルブを回路に取り付けた状
態を示す断面説明図である。2 (a) is an explanatory view showing a Putzun valve which is a specific example of a valve with a fastening hole opening function shown in FIG. 1, and FIG. 2 (b) is a cross section showing a state where the Putzn valve is attached to a circuit. FIG.
【図３】 冷媒を回収した本発明の冷媒回収装置を公知
の冷媒回収機に連結した状態を示す説明図である。FIG. 3 is an explanatory view showing a state in which the refrigerant recovery device of the present invention that has recovered the refrigerant is connected to a known refrigerant recovery machine.
【図４】 冷蔵庫の冷媒回路に従来の冷媒回収袋を連結
した状態を示す説明図である。FIG. 4 is an explanatory view showing a state in which a conventional refrigerant recovery bag is connected to a refrigerant circuit of a refrigerator.
【図５】 図４に示した従来の冷媒回収袋を公知の冷媒
回収機に連結した状態を示す説明図である。FIG. 5 is an explanatory view showing a state where the conventional refrigerant recovery bag shown in FIG. 4 is connected to a known refrigerant recovery machine.
７ 管路 １１ 本発明の冷媒回収装置 １２ 締付け孔開け機能付バルブ １３ 密閉容器 １５ 固体吸着剤（粉粒状活性炭） １６ 通気性部材（通気性不織布製袋） １７ 真空ポンプ 7 Pipeline 11 Refrigerant recovery device of the present invention 12 Valve with fastening hole opening function 13 Sealed vessel 15 Solid adsorbent (pulverized granular activated carbon) 16 Air-permeable member (bag made of air-permeable nonwoven fabric) 17 Vacuum pump
───────────────────────────────────────────────────── フロントページの続き (72)発明者 湯沢 治郎 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 井上 勝彦 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 吉田 福治 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 井汲 米造 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 Ｆターム(参考） 4D012 CA20 CB05 CD07 CH06 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Jiro Yuzawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Katsuhiko Inoue 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Fukuji Yoshida 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Pref. Sanyo Electric Co., Ltd. 5-5-5 Sanyo Electric Co., Ltd. F term (reference) 4D012 CA20 CB05 CD07 CH06
Claims (5)
もに、この密閉容器内部を真空引きしたことを特徴とす
る冷媒回収装置。1. A refrigerant recovery device, wherein a solid adsorbent is stored in a closed container and the inside of the closed container is evacuated.
ことを特徴とする請求項１記載の冷媒回収装置。2. The refrigerant recovery device according to claim 1, wherein a gas-permeable member is provided in the closed container.
能付バルブが設置された管路を備えることを特徴とする
請求項１あるいは請求項２記載の冷媒回収装置。3. The refrigerant recovery device according to claim 1, wherein the closed container includes a pipe having a valve with a fastening hole opening function installed at a tip thereof.
もに、この密閉容器内部を真空引きした冷媒回収装置を
冷凍回路に接続し、この冷凍回路の冷媒を吸着して回収
することを特徴とする冷媒回収方法。4. A refrigerant recovery device in which a solid adsorbent is housed in an airtight container and a vacuum is drawn in the airtight container is connected to a refrigeration circuit to adsorb and recover the refrigerant in the refrigeration circuit. Refrigerant recovery method.
をポンプに接続し、固体吸着剤に吸着した冷媒を脱着す
ることを特徴とする冷媒回収システム。5. A refrigerant recovery system, wherein a closed vessel of a refrigerant recovery device that has recovered a refrigerant is connected to a pump to desorb the refrigerant adsorbed on the solid adsorbent.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245595A JP2000070652A (en) | 1998-08-31 | 1998-08-31 | Refrigerant recovery apparatus, refrigerant recovery method and refrigerant recovery system |
| PCT/JP1999/003133 WO1999064799A1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| EP99925305A EP1014015A4 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| KR1020007001361A KR100564869B1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| CNB998009377A CN1153032C (en) | 1998-06-11 | 1999-06-11 | Refrigerant regenerating device, refrigerant regenerating method, refrigerator having refrigerant regenerating device, control method for refrigerant circuit or recovery |
| US09/485,638 US6449962B1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245595A JP2000070652A (en) | 1998-08-31 | 1998-08-31 | Refrigerant recovery apparatus, refrigerant recovery method and refrigerant recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000070652A true JP2000070652A (en) | 2000-03-07 |
Family
ID=17136075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10245595A Pending JP2000070652A (en) | 1998-06-11 | 1998-08-31 | Refrigerant recovery apparatus, refrigerant recovery method and refrigerant recovery system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000070652A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279202A (en) * | 2002-03-26 | 2003-10-02 | Mayekawa Mfg Co Ltd | Refrigerant gas recovering method for lower stage refrigerating cycle and its apparatus |
| GB2394033A (en) * | 2002-09-30 | 2004-04-14 | Sanyo Electric Co | Refrigerant recovery device |
| JP2005043038A (en) * | 2003-07-04 | 2005-02-17 | Sanyo Electric Co Ltd | Refrigerant recovery tank and refrigerant recovery method |
| WO2005078364A1 (en) * | 2004-02-17 | 2005-08-25 | Matsushita Electric Industrial Co., Ltd. | Combustible refrigerant treating device and treating method |
-
1998
- 1998-08-31 JP JP10245595A patent/JP2000070652A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279202A (en) * | 2002-03-26 | 2003-10-02 | Mayekawa Mfg Co Ltd | Refrigerant gas recovering method for lower stage refrigerating cycle and its apparatus |
| GB2394033A (en) * | 2002-09-30 | 2004-04-14 | Sanyo Electric Co | Refrigerant recovery device |
| JP2004125200A (en) * | 2002-09-30 | 2004-04-22 | Sanyo Electric Co Ltd | Refrigerant recovering device and refrigerant recovering method using this device |
| JP2005043038A (en) * | 2003-07-04 | 2005-02-17 | Sanyo Electric Co Ltd | Refrigerant recovery tank and refrigerant recovery method |
| WO2005078364A1 (en) * | 2004-02-17 | 2005-08-25 | Matsushita Electric Industrial Co., Ltd. | Combustible refrigerant treating device and treating method |
| JPWO2005078364A1 (en) * | 2004-02-17 | 2007-08-02 | 松下電器産業株式会社 | Combustible refrigerant, refrigerating machine oil processing apparatus and processing method |
| JP4854302B2 (en) * | 2004-02-17 | 2012-01-18 | パナソニック株式会社 | Combustible refrigerant, refrigerating machine oil processing apparatus and processing method |
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