JP2000154953A - Refrigerant recovery method from waste product - Google Patents
Refrigerant recovery method from waste productInfo
- Publication number
- JP2000154953A JP2000154953A JP10328048A JP32804898A JP2000154953A JP 2000154953 A JP2000154953 A JP 2000154953A JP 10328048 A JP10328048 A JP 10328048A JP 32804898 A JP32804898 A JP 32804898A JP 2000154953 A JP2000154953 A JP 2000154953A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- compressor
- waste product
- refrigerant recovery
- evaporator
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、廃製品となった空
気調和機を解体あるいは破砕する前に行われる冷媒回収
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering refrigerant which is performed before dismantling or crushing a waste air conditioner.
【０００２】[0002]
【従来の技術】従来、鉄、アルミニウム、銅、プラスチ
ック等、あるいは、これらの複合材からなる産業廃棄物
は破砕機等を使用して破砕した後、分離・選別すること
によってリサイクルを行っていた。また、空気調和機等
の廃棄物は内部に冷媒、オイルが封入されているため、
そのままの状態で破砕機に投入すると、冷媒が噴出した
りオイルが漏洩し、環境破壊を惹起したり危険性が高い
ことから、冷媒回収と製品リサイクル化が義務づけられ
ようとしている。また、社会環境や社会インフラの変化
により、製造メーカがより積極的に廃家電品から冷媒回
収とリサイクル化に取組むことが必要となっている。2. Description of the Related Art Conventionally, industrial wastes made of iron, aluminum, copper, plastics, or a composite material of these materials have been crushed using a crusher or the like, and then recycled by separating and sorting. . Also, since waste such as air conditioners has refrigerant and oil enclosed inside,
If it is put into a crusher as it is, the refrigerant will squirt out or oil will leak, causing environmental destruction or high risk, so that refrigerant recovery and product recycling are being obliged. Also, changes in the social environment and social infrastructure require manufacturers to more actively work on collecting and recycling refrigerants from waste home appliances.
【０００３】[0003]
【発明が解決しようとする課題】従来、レトロフィット
等を踏まえた冷媒回収装置はあったが、冷媒回収に時間
がかかり、大量の廃家電品を一括処理するには能力不足
であった。したがって、あらかじめ廃棄物からオイルを
効率よく抜き取る必要があった。Conventionally, there has been a refrigerant recovery apparatus based on retrofit or the like. However, it takes a long time to recover the refrigerant, and the capacity is insufficient to collectively process a large amount of waste home electric appliances. Therefore, it was necessary to efficiently extract oil from waste in advance.
【０００４】本発明は、従来技術の有するこのような問
題点に鑑みてなされたものであり、廃製品を解体処理す
る前に冷媒を効率よく回収することにより、その後の作
業性を向上させる冷媒回収方法を提供することを目的と
している。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is a refrigerant which efficiently recovers a refrigerant before dismantling a waste product, thereby improving workability thereafter. It aims to provide a collection method.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明のうちで請求項１に記載の発明は、冷媒回収
される廃製品の圧縮機モータ部を欠相通電して所定温度
以上に予熱し、蒸発部と圧縮機と凝縮部と冷媒回収容器
とを有する冷媒回収装置に上記廃製品を接続し、廃製品
内部の冷媒を上記蒸発部と圧縮機と凝縮部に通過させて
液冷媒とし、該液冷媒を上記冷媒回収容器に回収するよ
うにしたことを特徴とする廃製品からの冷媒回収方法で
ある。In order to achieve the above object, the invention according to claim 1 of the present invention provides a compressor motor for a waste product whose refrigerant is to be recovered is subjected to open-phase energization to a predetermined temperature. Preheated above, connecting the waste product to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, and allowing the refrigerant inside the waste product to pass through the evaporator, the compressor, and the condenser. A method for recovering refrigerant from waste products, wherein a liquid refrigerant is used and the liquid refrigerant is recovered in the refrigerant recovery container.
【０００６】また、請求項２に記載の発明は、上記圧縮
機モータ部に欠相通電する工程を電流制御で一定時間行
うようにしたことを特徴とする。According to a second aspect of the present invention, the step of energizing the compressor motor section in the open phase is performed for a predetermined time by current control.
【０００７】さらに、請求項３に記載の発明は、上記圧
縮機モータ部に欠相通電する工程を電力制御で一定時間
行うようにしたことを特徴とする。Further, the invention according to a third aspect is characterized in that the step of energizing the compressor motor section for the open phase is performed for a predetermined time by power control.
【０００８】また、請求項４に記載の発明は、廃製品と
なった空気調和器の室外機をダミー室内機と接続し、所
定時間運転することにより冷媒をガス化させた後、ダミ
ー室内機内部の冷媒を室外機本体に回収し、蒸発部と圧
縮機と凝縮部と冷媒回収容器とを有する冷媒回収装置に
上記室外機を接続し、廃製品内部の冷媒を上記蒸発部と
圧縮機と凝縮部に通過させて液冷媒とし、該液冷媒を上
記冷媒回収容器に回収するようにしたことを特徴とす
る。Further, according to a fourth aspect of the present invention, the outdoor unit of the air conditioner, which has become a waste product, is connected to the dummy indoor unit, and the dummy indoor unit is operated for a predetermined time to gasify the refrigerant. The refrigerant inside is recovered by the outdoor unit main body, and the outdoor unit is connected to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, and the refrigerant inside the waste product is vaporized by the evaporator and the compressor. The liquid refrigerant is passed through the condensing section to be a liquid refrigerant, and the liquid refrigerant is recovered in the refrigerant recovery container.
【０００９】また、請求項５に記載の発明は、上記所定
時間運転の前に、雰囲気温度により冷房及び暖房回路運
転の切換を行うようにしたことを特徴とする。Further, the invention according to claim 5 is characterized in that, before the operation for the predetermined time, switching between the cooling circuit and the heating circuit operation is performed according to the ambient temperature.
【００１０】また、請求項６に記載の発明は、廃製品
が、３方弁と圧縮機と熱交換器と絞り部と２方弁とをこ
の順序で配設した空気調和器の室外機であって、上記熱
交換器と絞り部との間に設けられた冷媒封入ポート及び
上記３方弁を、蒸発部と圧縮機と凝縮部と冷媒回収容器
とを有する冷媒回収装置に接続し、上記廃製品内部の冷
媒を上記蒸発部と圧縮機と凝縮部に通過させて液冷媒と
し、該液冷媒を上記冷媒回収容器に回収するようにした
ことを特徴とする。According to a sixth aspect of the present invention, a waste product is an outdoor unit of an air conditioner in which a three-way valve, a compressor, a heat exchanger, a throttle, and a two-way valve are arranged in this order. Connecting the refrigerant charging port provided between the heat exchanger and the throttle unit and the three-way valve to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, The refrigerant inside the waste product is passed through the evaporator, the compressor, and the condenser to form a liquid refrigerant, and the liquid refrigerant is collected in the refrigerant collection container.
【００１１】また、請求項７に記載の発明は、上記冷媒
封入ポートがメカバルブであることを特徴とする。The invention according to claim 7 is characterized in that the refrigerant charging port is a mechanical valve.
【００１２】さらに、請求項８に記載の発明は、冷媒回
収される廃製品を、蒸発部と圧縮機と凝縮部と冷媒回収
容器とを有する冷媒回収装置に接続し、上記廃製品内に
設けられた圧縮機を駆動させることにより冷媒をガス化
させ、上記廃製品内部の冷媒を上記冷媒回収装置の蒸発
部と圧縮機と凝縮部に通過させて液冷媒とし、該液冷媒
を上記冷媒回収容器に回収するようにしたことを特徴と
する。Further, according to the present invention, the waste product from which the refrigerant is recovered is connected to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, and is provided in the waste product. By driving the compressed compressor, the refrigerant is gasified, and the refrigerant in the waste product is passed through the evaporator, the compressor, and the condenser of the refrigerant recovery device to become a liquid refrigerant, and the liquid refrigerant is recovered as the refrigerant. It is characterized in that it is collected in a container.
【００１３】また、請求項９に記載の発明は、上記廃製
品内の圧縮機を暖房回路で駆動するようにしたことを特
徴とする。The invention according to claim 9 is characterized in that the compressor in the waste product is driven by a heating circuit.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら説明する。 （実施の形態１)図１は廃棄物となった空気調和器の室
外機Ａのサイクル構成を示しており、主要構成要素とし
て、圧縮機１、四方弁２、熱交換器３、絞り部４、アキ
ュムレータ５、室内機との接続部である２方弁６、３方
弁７を備えている。Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a cycle configuration of an outdoor unit A of a waste air conditioner. The main components are a compressor 1, a four-way valve 2, a heat exchanger 3, and a throttle unit 4. , An accumulator 5, and a two-way valve 6, a three-way valve 7, which is a connection part with an indoor unit.
【００１５】図２は圧縮機１の概略図であり、圧縮機１
の上部には吐出管８及び圧縮機電動部への入力ターミナ
ル１０が配設されるとともに、下部側面に連結された吸
入管９を介してアキュムレータ５が圧縮機本体容器に固
定されている。また、圧縮機内には冷凍機油が充填さ
れ、サイクル内には冷媒が充填されている。FIG. 2 is a schematic diagram of the compressor 1.
A discharge pipe 8 and an input terminal 10 for a compressor electric section are arranged at the upper part of the compressor, and an accumulator 5 is fixed to the compressor main body via a suction pipe 9 connected to a lower side surface. The compressor is filled with refrigerating machine oil, and the cycle is filled with refrigerant.
【００１６】図３は本発明にかかる冷媒回収方法に使用
される冷媒回収装置の概略構成図である。図３に示され
る冷媒回収装置おいて、１１は被冷媒回収物である室外
機Ａに接続される接続部であり、耐圧ホースが使用され
る。１２はフィルターで、室外機Ａからの不純物の流入
を防止するものである。１３は冷媒回収の開始および完
了時点のタイミングを知らせるための圧力スイッチであ
る。１４は室外機Ａ内の冷媒圧力を表示する圧力計であ
る。１５はドライヤーで、回収冷媒の水分を除去するた
めのものである。１６は室外機Ａより排出された冷媒を
気化するための蒸発器であり、それを補助するためプロ
ペラファン１７およびファンモータ１８が配設されてい
る。１９はオイルセパレータで、排出された冷媒に随伴
したオイルを分離するものである。２０は逆止弁で回収
完了時、後述する圧縮機の高圧側の冷媒が室外機Ａ側に
流入させないようにするためのものである。２１はアキ
ュムレータで圧縮機の吸入口に液冷媒が入り込まないよ
うにするためのタンクである。２２は圧縮機で、吸入口
より流入してくるガス状の冷媒を圧縮して高温高圧のガ
スとして排出口より吐出するためのものである。２３は
オイルセパレータで圧縮機２２より吐出された冷凍機油
を分離するためのものである。２４は戻り管路でオイル
セパレータ２３で分離されたオイルを圧縮機２２内に戻
す管路であり、２５は逆止弁である。２６は熱交換器
で、圧縮機２２で圧縮されたガス冷媒を液冷媒にする凝
縮部であり、それを補助するためプロペラファン２７お
よびファンモータ２８が配設されている。２９は凝縮部
の出口部とアキュムレータの入口部を接続する圧縮機２
２の冷却回路で、３０は圧縮機２を冷却する際に開く切
り換え操作弁である。３１は逆止弁で、後述する冷媒回
収ボンベに回収された液状の冷媒が気化して凝縮部側に
逆流するのを防ぐためのものである。３２は回収ボンベ
内の圧力を表示する圧力計である。３３は安全弁で、回
収ボンベ内の圧力が異常に上昇した場合自動的に排出す
るためのものである。３４は冷媒回収装置本体と冷媒回
収ボンベを接続する接続部であり、耐圧ホースが使用さ
れる。３５は冷媒回収ボンベで液状の冷媒を貯蔵するた
めのものである。３６はロードセル重量計で、載置され
た冷媒回収ボンベ３５に回収された冷媒の重量を管理す
るためのものである。FIG. 3 is a schematic configuration diagram of a refrigerant recovery device used in the refrigerant recovery method according to the present invention. In the refrigerant recovery device shown in FIG. 3, reference numeral 11 denotes a connection portion connected to the outdoor unit A, which is a refrigerant to be recovered, and a pressure-resistant hose is used. Reference numeral 12 denotes a filter for preventing inflow of impurities from the outdoor unit A. Reference numeral 13 denotes a pressure switch for notifying the timing of the start and the completion of the refrigerant recovery. A pressure gauge 14 indicates the pressure of the refrigerant in the outdoor unit A. Reference numeral 15 denotes a dryer for removing the moisture of the collected refrigerant. Reference numeral 16 denotes an evaporator for evaporating the refrigerant discharged from the outdoor unit A, and a propeller fan 17 and a fan motor 18 are provided to assist the evaporator. An oil separator 19 separates oil accompanying the discharged refrigerant. Reference numeral 20 denotes a check valve for preventing refrigerant on the high pressure side of the compressor described later from flowing into the outdoor unit A when the recovery is completed. An accumulator 21 is a tank for preventing liquid refrigerant from entering the suction port of the compressor. Reference numeral 22 denotes a compressor for compressing a gaseous refrigerant flowing from the suction port and discharging the compressed gas as a high-temperature and high-pressure gas from the discharge port. Reference numeral 23 denotes an oil separator for separating refrigerating machine oil discharged from the compressor 22. Reference numeral 24 denotes a return line for returning the oil separated by the oil separator 23 into the compressor 22, and reference numeral 25 denotes a check valve. Reference numeral 26 denotes a heat exchanger, which is a condensing unit that converts the gas refrigerant compressed by the compressor 22 into a liquid refrigerant, and is provided with a propeller fan 27 and a fan motor 28 to assist the liquid refrigerant. 29 is a compressor 2 that connects the outlet of the condensing section and the inlet of the accumulator.
Reference numeral 30 denotes a switching operation valve that opens when the compressor 2 is cooled. Reference numeral 31 denotes a check valve for preventing liquid refrigerant collected in a refrigerant collection cylinder described later from evaporating and flowing back to the condensation section side. Reference numeral 32 denotes a pressure gauge for displaying the pressure in the collection cylinder. Reference numeral 33 denotes a safety valve for automatically discharging when the pressure in the recovery cylinder rises abnormally. Reference numeral 34 denotes a connection portion for connecting the refrigerant recovery device main body and the refrigerant recovery cylinder, and a pressure-resistant hose is used. Reference numeral 35 denotes a refrigerant recovery cylinder for storing a liquid refrigerant. Reference numeral 36 denotes a load cell weighing scale for managing the weight of the refrigerant collected in the mounted refrigerant collection cylinder 35.
【００１７】上記構成の冷媒回収装置を使用して行った
冷媒回収方法につき以下説明する。電源制御部（図示せ
ず）により圧縮機１の入力ターミナル１０に約２０Ａ以
下の電流が流れるように、電流値をモニター制御し、か
つ、電源からの印加電圧を下げながら約５分間入力を継
続すると、モータコイルは約８０℃まで上昇する。その
結果、冷凍機油中に溶解していた冷媒は冷凍サイクル内
にガス状で拡散しやすくなる。十分に予熱された圧縮機
１は大きな熱容量を有しているので、すぐにガス化した
冷媒が再溶解することはない。その加温されている間に
つぎの冷媒回収作業に移行する。A method of recovering refrigerant by using the refrigerant recovery apparatus having the above configuration will be described below. The current value is monitored and controlled by a power supply control unit (not shown) so that a current of about 20 A or less flows to the input terminal 10 of the compressor 1, and the input is continued for about 5 minutes while reducing the applied voltage from the power supply. Then, the motor coil rises to about 80 ° C. As a result, the refrigerant dissolved in the refrigerating machine oil is easily diffused in a gaseous state in the refrigerating cycle. Since the sufficiently preheated compressor 1 has a large heat capacity, the gasified refrigerant does not immediately melt again. During the heating, the operation proceeds to the next refrigerant recovery operation.
【００１８】被冷媒回収物である室外機Ａの２方弁６及
び３方弁７を接続部１１である耐圧ホースに接続し、２
方弁６及び３方弁７を開放し、室外機Ａ内部の圧力を圧
力計１４で確認する。一定の圧力、例えば３ｋｇ／ｃｍ
2以上であれば、圧縮機１を稼働させて冷媒をドライヤ
ー１５に通過させ蒸発器１６で十分にガス化させる。そ
の後、冷媒に随伴してきたオイルをオイルセパレータ１
９で除去し、アキュムレータ２１を経て圧縮機２２の吸
入口から吸入すると、吸入された冷媒は圧縮され、高温
高圧のガス冷媒に変わる。この時、圧縮機２２から吐出
したオイルをオイルセパレータ２３で分離する。分離さ
れたオイルは戻り管路２４を経て圧縮機２２内に戻る。
圧縮された高温高圧ガスは凝縮部２６を経て液冷媒に変
わり、最後に冷媒回収装置本体と冷媒回収ボンベ３５を
接続する接続部３４を経て冷媒回収ボンベ３５内に貯蔵
される。The two-way valve 6 and the three-way valve 7 of the outdoor unit A, which is the refrigerant to be recovered, are connected to a pressure-resistant hose, which is a connecting part 11, and
The one-way valve 6 and the three-way valve 7 are opened, and the pressure inside the outdoor unit A is checked with the pressure gauge 14. Constant pressure, eg 3kg / cm
If it is 2 or more, the compressor 1 is operated to pass the refrigerant through the dryer 15 and gasify it sufficiently in the evaporator 16. Then, the oil accompanying the refrigerant is removed from the oil separator 1.
When the refrigerant is removed at 9 and sucked from the suction port of the compressor 22 through the accumulator 21, the sucked refrigerant is compressed and changed into a high-temperature and high-pressure gas refrigerant. At this time, oil discharged from the compressor 22 is separated by an oil separator 23. The separated oil returns to the compressor 22 via the return line 24.
The compressed high-temperature and high-pressure gas is converted into a liquid refrigerant through the condensing unit 26, and is finally stored in the refrigerant recovery cylinder 35 via the connection unit 34 connecting the refrigerant recovery device main body and the refrigerant recovery cylinder 35.
【００１９】この実施の形態で行った圧縮機の予熱は特
に冬場の外気温が低い時には冷媒回収の効率アップに効
率的である。すなわち、大量の廃家電品を工場内の暖か
い場所に保管することは困難なので、冷媒回収の前に効
果的に冷凍機油中に溶解した冷媒をガス化させることが
重要である。この実施の形態では圧縮機１の入力ターミ
ナル３相のいずれかを欠相通電させる手段として電流制
御方式で行ったが、電力制御方式で行っても同様に簡単
な制御で十分に予熱することができる。The preheating of the compressor performed in this embodiment is effective in increasing the efficiency of refrigerant recovery particularly when the outside air temperature is low in winter. That is, since it is difficult to store a large amount of waste home appliances in a warm place in a factory, it is important to effectively gasify the refrigerant dissolved in the refrigerating machine oil before collecting the refrigerant. In this embodiment, the current control method is used as a means for conducting any of the three phases of the input terminal of the compressor 1 in the open phase. However, even if the power control method is used, the preheating can be sufficiently performed by the simple control. it can.
【００２０】また、この実施の形態では四方弁２が冷房
回路で停止している室外機Ａについて示したが、四方弁
２はコイルで動作し、製品によっては入力ＯＦＦ時に冷
房回路状態のものと暖房回路状態のものがある。冷房回
路では３方弁７側から冷媒回収できるのはアキュムレー
タ５、圧縮機１のメカ機構部に存在する冷媒であり、圧
縮機吐出から熱交換器３に至る経路中に存在する冷媒は
２方弁６側から冷媒回収することになる。すなわち圧縮
機のメカ機構吐出部に回路を逆流防止する弁が配設され
ているため、吸引の配管抵抗は３方弁７のほうが小さく
ても圧縮機吐出側に存在する冷媒をメカ機構部を経て吸
入側に移動させることはできない。Further, in this embodiment, the outdoor unit A in which the four-way valve 2 is stopped in the cooling circuit is shown. However, the four-way valve 2 is operated by a coil, and depending on the product, the one in the cooling circuit state when the input is turned off. Some are in a heating circuit state. In the cooling circuit, the refrigerant that can be recovered from the three-way valve 7 side is the refrigerant existing in the mechanical mechanism of the accumulator 5 and the compressor 1, and the refrigerant existing in the path from the compressor discharge to the heat exchanger 3 is two-way. The refrigerant is recovered from the valve 6 side. That is, since the valve for preventing the circuit from flowing backward is provided at the mechanical mechanism discharge part of the compressor, the refrigerant existing on the compressor discharge side is removed by the mechanical mechanism part even if the suction pipe resistance is smaller than the three-way valve 7. Cannot be moved to the suction side.
【００２１】しかしながら、暖房回路では３方弁７側か
ら圧縮機１のメカ機構吐出部を通じて吸入口、アキュム
レータ５、熱交換器３を介して吸引する力と、２方弁６
側から絞り弁４を介して吸引する力とバランスしながら
冷媒回収される。したがって、効率よく短時間に冷媒回
収できるのは四方弁２が暖房回路状態にある場合であ
る。However, in the heating circuit, the suction force from the three-way valve 7 side through the mechanical mechanism discharge part of the compressor 1 through the suction port, the accumulator 5, and the heat exchanger 3, and the two-way valve 6
Refrigerant is recovered while balancing the suction force from the side via the throttle valve 4. Therefore, the refrigerant can be efficiently recovered in a short time when the four-way valve 2 is in a heating circuit state.
【００２２】(実施の形態２)本発明の実施の形態２にか
かる冷媒回収方法を図４を参照しながら説明する。３７
は室内機を代表する熱交換器であり、３８は室内機と室
外機Ａを接続する配管経路である。廃製品の室外機Ａと
ダミー室内機を利用して１０分間冷房過負荷運転させる
ことによって圧縮機本体は７０℃に昇温するとともに圧
縮機メカ機構のかき混ぜ効果によって冷凍機油中に溶解
していた冷媒はガス化しやすくなり、次の冷媒回収作業
の準備が完了する。Embodiment 2 A refrigerant recovery method according to Embodiment 2 of the present invention will be described with reference to FIG. 37
Reference numeral denotes a heat exchanger representing the indoor unit, and reference numeral 38 denotes a piping path connecting the indoor unit and the outdoor unit A. The compressor main body was heated to 70 ° C. by performing the cooling overload operation for 10 minutes using the outdoor unit A of the waste product and the dummy indoor unit, and was dissolved in the refrigerating machine oil by the stirring effect of the compressor mechanical mechanism. The refrigerant is easily gasified, and preparation for the next refrigerant recovery operation is completed.
【００２３】この後、暖まってガス化しやすくなった冷
媒を室外機本体に回収した後、実施の形態１と同様に冷
媒回収装置を作動させることにより冷媒の効率的な回収
を行うことができる。Thereafter, the refrigerant that has become warm and easily gasified is recovered in the outdoor unit main body, and then, by operating the refrigerant recovery apparatus in the same manner as in the first embodiment, the refrigerant can be efficiently recovered.
【００２４】なお、この実施の形態では冷房運転を行っ
たが、室外機Ａを運転させる目的は過負荷運転させるこ
とであり、運転回路は暖房でも冷房でもよい。したがっ
て、冷媒回収を行う時の環境によって、例えば冬場は暖
房、夏場は冷房で行うことが好ましい。Although the cooling operation is performed in this embodiment, the purpose of operating the outdoor unit A is to perform an overload operation, and the operation circuit may be either heating or cooling. Therefore, depending on the environment in which the refrigerant is collected, for example, it is preferable to perform the heating in winter and the cooling in summer.
【００２５】(実施の形態３)本発明の実施の形態３にか
かる冷媒回収方法を図５を参照しながら説明する。図５
に示される室外機Ａの主要な構成部品は実施の形態１と
同じであるが、熱交換器３と絞り部４の間に製造時に冷
媒を封入した冷媒封入ポート３９が示してある。この実
施の形態では圧縮機１を実施の形態１と同様に予熱した
後、冷媒回路装置本体と３方弁７および冷媒封入ポート
３９を接続して冷媒回収を行った。冷媒封入ポート３９
には冷媒漏れへのシール性を有するピンジャックを直接
銅管に差し込んで耐圧ホースと接続した。Third Embodiment A refrigerant recovery method according to a third embodiment of the present invention will be described with reference to FIG. FIG.
The main components of the outdoor unit A shown in FIG. 4 are the same as those in the first embodiment, but a refrigerant charging port 39 in which a refrigerant is charged at the time of manufacturing is shown between the heat exchanger 3 and the throttle unit 4. In this embodiment, after pre-heating the compressor 1 in the same manner as in the first embodiment, the refrigerant circuit device main body is connected to the three-way valve 7 and the refrigerant charging port 39 to recover the refrigerant. Refrigerant charging port 39
A pin jack having a sealing property against refrigerant leakage was directly inserted into a copper tube and connected to a pressure-resistant hose.
【００２６】この場合、冷媒封入ポート３９を活用する
ので絞り部４の配管抵抗がほとんどない状態で冷媒回収
を効率的に行うことができる。In this case, since the refrigerant charging port 39 is utilized, the refrigerant can be efficiently recovered in a state where the piping resistance of the throttle portion 4 is almost zero.
【００２７】また、この実施の形態では通常ロウ付け状
態で封印してある冷媒封入ポート３９を活用したが、こ
のポート３９が製造時にメカバルブ方式になっていれば
さらに冷媒回収の作業効率が向上する。Further, in this embodiment, the refrigerant charging port 39 which is normally sealed in a brazed state is utilized. However, if this port 39 is of a mechanical valve type at the time of manufacturing, the operation efficiency of refrigerant recovery is further improved. .
【００２８】(実施の形態４)この実施の形態では、実施
の形態１と同様な室外機Ａに対し、圧縮機１の予熱方式
も同様に行って冷媒回収のための準備を完了した。冷媒
回収に際して室外機Ａの３方弁７だけを冷媒回収装置本
体と接続し、冷媒回収を暖房状態にし、圧縮機１を駆動
させながら冷媒回収を行った。(Embodiment 4) In the present embodiment, the preparation for refrigerant recovery is completed by performing the preheating method of the compressor 1 in the same manner as the outdoor unit A of the first embodiment. At the time of refrigerant recovery, only the three-way valve 7 of the outdoor unit A was connected to the refrigerant recovery device main body, the refrigerant recovery was set to a heating state, and the refrigerant recovery was performed while the compressor 1 was driven.
【００２９】室外機Ａ内の冷媒は圧縮機１で圧縮され、
高温高圧のガス冷媒に変化した後、室外機Ａの３方弁７
から冷媒回収装置に排出されるので、より短時間で冷媒
回収を行うことができる。The refrigerant in the outdoor unit A is compressed by the compressor 1,
After changing to the high-temperature high-pressure gas refrigerant, the three-way valve 7 of the outdoor unit A
From the refrigerant recovery device, the refrigerant can be recovered in a shorter time.
【００３０】この実施の形態では冷媒回路を暖房状態に
して冷媒回収を行ったが、冷房状態で行う場合には２方
弁６だけを冷媒回収装置本体と接続すればよい。In this embodiment, the refrigerant is recovered in a state in which the refrigerant circuit is in the heating state. However, in the case of performing the cooling in the cooling state, only the two-way valve 6 needs to be connected to the main body of the refrigerant recovery apparatus.
【００３１】[0031]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。本
発明のうちで請求項１に記載の発明によれば、圧縮機を
前もって予熱することでオイル中に溶け込んでいた冷媒
がガス化しやすくなり冷媒回収作業が容易となる。圧縮
機の予熱はモータ部に欠相通電することで簡単に所定の
温度にすることができる。Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, by preheating the compressor in advance, the refrigerant dissolved in the oil is easily gasified, and the refrigerant recovery operation is facilitated. The pre-heating of the compressor can be easily brought to a predetermined temperature by applying open-phase current to the motor section.
【００３２】また、請求項２に記載の発明によれば、三
相のモータ部に対していずれかを欠相させて通電する
と、コイル温度が上昇して抵抗値が下がり、過大な電流
が流れるようになる。そこで、低温では高電圧を印可
し、徐々に電流値をモニターしながら電圧を低下させる
ことによって、効果的にモータコイルを温度上昇させる
ことができる。According to the second aspect of the present invention, when any one of the three-phase motor sections is disconnected and energized, the coil temperature increases, the resistance value decreases, and an excessive current flows. Become like Therefore, by applying a high voltage at a low temperature and gradually lowering the voltage while monitoring the current value, the temperature of the motor coil can be effectively raised.
【００３３】さらに、請求項３に記載の発明によれば、
モータコイルに電力制御で欠相通電するに際し、例えば
一定の電力を供給して温度を上昇させるようにしたの
で、簡単な制御で行うことができる。Further, according to the third aspect of the present invention,
When power is supplied to the motor coil to open phase by power control, for example, a constant power is supplied to raise the temperature, so that the control can be performed with simple control.
【００３４】また、請求項４に記載の発明によれば、廃
製品である室外機をダミー室内機と接続した後、室外機
の圧縮メカ部を駆動させるようにしたので、オイルをか
き混ぜて、溶け込んでいた冷媒をガス化しやすくでき、
効率よく冷媒回収を行うことができる。According to the fourth aspect of the present invention, after the outdoor unit which is a waste product is connected to the dummy indoor unit, the compression mechanism of the outdoor unit is driven, so that the oil is agitated. The dissolved refrigerant can be easily gasified,
Refrigerant recovery can be performed efficiently.
【００３５】また、請求項５に記載の発明によれば、冷
媒回収を行う作業環境によって、例えば冬場は暖房運
転、夏場は冷房運転で圧縮機を駆動させることで負荷を
大きくできるので、オイルに溶け込んでいた冷媒を効率
的にガス化しやすくでき、容易に回収することができ
る。According to the fifth aspect of the present invention, the load can be increased by driving the compressor in a heating operation in winter and in a cooling operation in summer, depending on the working environment in which the refrigerant is recovered. The dissolved refrigerant can be easily gasified efficiently and can be easily collected.
【００３６】また、請求項６に記載の発明によれば、製
造時の冷媒封入に使用されたポートを活用し、３方弁と
ともに冷媒回収装置に接続し冷媒回収するようにしたの
で、冷媒排出の配管抵抗が低減し、より液冷媒リッチな
状態で短時間に効率的な冷媒回収が行える。According to the sixth aspect of the present invention, the port used for charging the refrigerant at the time of manufacturing is utilized, and the refrigerant is recovered by connecting to the refrigerant recovery device together with the three-way valve. The pipe resistance is reduced, and efficient refrigerant recovery can be performed in a short time in a more liquid refrigerant rich state.
【００３７】また、請求項７に記載の発明によれば、冷
媒封入ポートをメカバルブとすることにより冷媒回収の
作業性が向上する。According to the seventh aspect of the present invention, the operability of recovering the refrigerant is improved by using the refrigerant charging port as a mechanical valve.
【００３８】また、請求項８に記載の発明によれば、冷
媒回収装置内の圧縮機で冷媒回収作業を実施すると同時
に、冷媒回収される廃製品側の圧縮機も駆動させること
により冷媒回収時間の短縮化を図ることができる。According to the eighth aspect of the present invention, the refrigerant recovery operation is performed by the compressor in the refrigerant recovery device, and at the same time, the compressor on the waste product side where the refrigerant is recovered is also driven to thereby reduce the refrigerant recovery time. Can be shortened.
【００３９】また、請求項９に記載の発明によれば、圧
縮機を暖房運転で駆動するようにしたので、廃製品内の
冷媒が四方弁を経て冷媒回収装置側に高温高圧ガス冷媒
で搬送されるので、さらに冷媒回収時間の短縮化を図る
ことができる。According to the ninth aspect of the present invention, since the compressor is driven in the heating operation, the refrigerant in the waste product is transported to the refrigerant recovery device side through the four-way valve by the high-temperature high-pressure gas refrigerant. Therefore, it is possible to further shorten the refrigerant recovery time.
【図１】 本発明の実施の形態１にかかる冷媒回収方法
に使用される廃製品となった空気調和器の室外機のサイ
クル構成図である。FIG. 1 is a cycle configuration diagram of an outdoor unit of an air conditioner that has become a waste product used in the refrigerant recovery method according to the first embodiment of the present invention.
【図２】 図１の室外機に設けられた縦型圧縮機の正面
図である。FIG. 2 is a front view of a vertical compressor provided in the outdoor unit of FIG.
【図３】 本発明の冷媒回収方法に使用される冷媒回収
装置の配管系統図である。FIG. 3 is a piping diagram of a refrigerant recovery device used in the refrigerant recovery method of the present invention.
【図４】 本発明の実施の形態２にかかる冷媒回収方法
を実施する廃製品となった室外機とダミー室内機とのサ
イクル構成図である。FIG. 4 is a cycle configuration diagram of an outdoor unit and a dummy indoor unit that have become waste products for implementing the refrigerant recovery method according to the second embodiment of the present invention.
【図５】 本発明の実施の形態３にかかる冷媒回収方法
に使用される廃製品となった室外機のサイクル構成図で
ある。FIG. 5 is a cycle configuration diagram of an outdoor unit that has become a waste product used in the refrigerant recovery method according to the third embodiment of the present invention.
１ 圧縮機 ２ 四方弁 ３ 熱交換器 ４ 絞り部 ５ アキュムレータ ６ ２方弁 ７ ３方弁 ８ 吐出管 ９ 吸入管 １０ 入力ターミナル １１ 接続部 １２ フィルター １３ 圧力スイッチ １４，３２ 圧力計 １５ ドライヤー １６ 蒸発器 １７，２７ プロペラファン １８，２８ ファンモータ １９ オイルセパレータ ２０，２５，３１ 逆止弁 ２１ アキュムレータ ２２ 圧縮機 ２３ オイルセパレータ ２４ 戻り管路 ２６ 凝縮部 ２９ 冷却回路 ３０ 切り換え操作弁 ３３ 安全弁 ３４ 接続部 ３５ 冷媒回収ボンベ ３６ ロードセル重量計 ３７ 室内熱交換器 ３８ 配管経路 ３９ 冷媒封入ポート Ａ 廃製品 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Heat exchanger 4 Throttle part 5 Accumulator 6 Two-way valve 7 Three-way valve 8 Discharge pipe 9 Suction pipe 10 Input terminal 11 Connection part 12 Filter 13 Pressure switch 14, 32 Pressure gauge 15 Dryer 16 Evaporator 17, 27 Propeller fan 18, 28 Fan motor 19 Oil separator 20, 25, 31 Check valve 21 Accumulator 22 Compressor 23 Oil separator 24 Return line 26 Condenser 29 Cooling circuit 30 Switching valve 33 Safety valve 34 Connection 35 Refrigerant Collection cylinder 36 Load cell weighing scale 37 Indoor heat exchanger 38 Piping route 39 Refrigerant charging port A Disused product
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村田 淳 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3H003 AA01 AC03 CD07 CE00 CE03 CF01 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Murata 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 3H003 AA01 AC03 CD07 CE00 CE03 CF01
Claims (9)
を欠相通電して所定温度以上に予熱し、蒸発部と圧縮機
と凝縮部と冷媒回収容器とを有する冷媒回収装置に上記
廃製品を接続し、廃製品内部の冷媒を上記蒸発部と圧縮
機と凝縮部に通過させて液冷媒とし、該液冷媒を上記冷
媒回収容器に回収するようにしたことを特徴とする廃製
品からの冷媒回収方法。1. A refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container is preheated to a predetermined temperature or higher by energizing a compressor motor of a waste product from which refrigerant is to be recovered in a phaseless manner. Connecting the product, passing the refrigerant inside the waste product through the evaporating section, the compressor, and the condensing section to form a liquid refrigerant, and collecting the liquid refrigerant in the refrigerant recovery container. Refrigerant recovery method.
を電流制御で一定時間行うようにした請求項１に記載の
廃製品からの冷媒回収方法。2. The method for recovering refrigerant from waste products according to claim 1, wherein the step of energizing the compressor motor section for the open phase is performed for a predetermined time by current control.
を電力制御で一定時間行うようにした請求項１に記載の
廃製品からの冷媒回収方法。3. The method for recovering refrigerant from waste products according to claim 1, wherein the step of energizing the compressor motor section in the open phase is performed for a predetermined time by electric power control.
ミー室内機と接続し、所定時間運転することにより冷媒
をガス化させた後、ダミー室内機内部の冷媒を室外機本
体に回収し、蒸発部と圧縮機と凝縮部と冷媒回収容器と
を有する冷媒回収装置に上記室外機を接続し、廃製品内
部の冷媒を上記蒸発部と圧縮機と凝縮部に通過させて液
冷媒とし、該液冷媒を上記冷媒回収容器に回収するよう
にしたことを特徴とする廃製品からの冷媒回収方法。4. The outdoor unit of the air conditioner that has become a waste product is connected to the dummy indoor unit, and after operating for a predetermined time to gasify the refrigerant, the refrigerant inside the dummy indoor unit is collected in the outdoor unit main body. Then, the outdoor unit is connected to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, and the refrigerant inside the waste product is passed through the evaporator, the compressor, and the condenser to form a liquid refrigerant. And recovering the liquid refrigerant in the refrigerant recovery container.
より冷房及び暖房回路運転の切換を行うようにした請求
項４に記載の廃製品からの冷媒回収方法。5. The method for recovering refrigerant from waste products according to claim 4, wherein switching between cooling and heating circuit operation is performed according to the ambient temperature before the operation for the predetermined time.
絞り部と２方弁とをこの順序で配設した空気調和器の室
外機であって、上記熱交換器と絞り部との間に設けられ
た冷媒封入ポート及び上記３方弁を、蒸発部と圧縮機と
凝縮部と冷媒回収容器とを有する冷媒回収装置に接続
し、上記廃製品内部の冷媒を上記蒸発部と圧縮機と凝縮
部に通過させて液冷媒とし、該液冷媒を上記冷媒回収容
器に回収するようにしたことを特徴とする廃製品からの
冷媒回収方法。6. An air conditioner outdoor unit in which a waste product is provided with a three-way valve, a compressor, a heat exchanger, a restrictor, and a two-way valve in this order, wherein the heat exchanger and the restrictor The refrigerant charging port provided between the first and second parts and the three-way valve are connected to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container. And a compressor and a condensing section to make a liquid refrigerant, and the liquid refrigerant is recovered in the refrigerant recovery container.
請求項６に記載の廃製品からの冷媒回収方法。7. The method according to claim 6, wherein the refrigerant charging port is a mechanical valve.
機と凝縮部と冷媒回収容器とを有する冷媒回収装置に接
続し、上記廃製品内に設けられた圧縮機を駆動させるこ
とにより冷媒をガス化させ、上記廃製品内部の冷媒を上
記冷媒回収装置の蒸発部と圧縮機と凝縮部に通過させて
液冷媒とし、該液冷媒を上記冷媒回収容器に回収するよ
うにしたことを特徴とする廃製品からの冷媒回収方法。8. A waste product from which a refrigerant is recovered is connected to a refrigerant recovery device having an evaporator, a compressor, a condenser, and a refrigerant recovery container, and a compressor provided in the waste product is driven. Refrigerant is gasified, and the refrigerant inside the waste product is passed through an evaporator, a compressor, and a condenser of the refrigerant recovery device to be a liquid refrigerant, and the liquid refrigerant is recovered in the refrigerant recovery container. Characteristic method of recovering refrigerant from waste products.
するようにした請求項８に記載の廃製品からの冷媒回収
方法。9. The method according to claim 8, wherein the compressor in the waste product is driven by a heating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328048A JP2000154953A (en) | 1998-11-18 | 1998-11-18 | Refrigerant recovery method from waste product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328048A JP2000154953A (en) | 1998-11-18 | 1998-11-18 | Refrigerant recovery method from waste product |
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| Publication Number | Publication Date |
|---|---|
| JP2000154953A true JP2000154953A (en) | 2000-06-06 |
Family
ID=18205939
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| Country | Link |
|---|---|
| JP (1) | JP2000154953A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197455A (en) * | 2020-10-16 | 2021-01-08 | 珠海格力电器股份有限公司 | Air conditioning unit capable of recycling refrigerant and control method thereof |
| CN115443397A (en) * | 2020-04-27 | 2022-12-06 | 大金工业株式会社 | Refrigerant recovery control device and refrigerant recovery control system |
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| JPS61185966U (en) * | 1985-05-04 | 1986-11-20 | ||
| JPH0420762A (en) * | 1990-05-11 | 1992-01-24 | Daikin Ind Ltd | Refrigerant recovery device |
| JPH04320773A (en) * | 1991-04-22 | 1992-11-11 | Toshiba Corp | Freezing cycle with refrigerant recovery mode |
| JPH05164437A (en) * | 1991-12-12 | 1993-06-29 | Hitachi Ltd | Air conditioner |
| JPH0875274A (en) * | 1994-09-05 | 1996-03-19 | Sanyo Electric Co Ltd | Refrigerating equipment |
| JPH08226714A (en) * | 1995-02-23 | 1996-09-03 | Matsushita Electric Ind Co Ltd | Air conditioning equipment |
| JPH10306961A (en) * | 1997-05-07 | 1998-11-17 | Hoshizaki Electric Co Ltd | Liquid stagnation prevention device of refrigerator and refrigerant recovery method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61185966U (en) * | 1985-05-04 | 1986-11-20 | ||
| JPH0420762A (en) * | 1990-05-11 | 1992-01-24 | Daikin Ind Ltd | Refrigerant recovery device |
| JPH04320773A (en) * | 1991-04-22 | 1992-11-11 | Toshiba Corp | Freezing cycle with refrigerant recovery mode |
| JPH05164437A (en) * | 1991-12-12 | 1993-06-29 | Hitachi Ltd | Air conditioner |
| JPH0875274A (en) * | 1994-09-05 | 1996-03-19 | Sanyo Electric Co Ltd | Refrigerating equipment |
| JPH08226714A (en) * | 1995-02-23 | 1996-09-03 | Matsushita Electric Ind Co Ltd | Air conditioning equipment |
| JPH10306961A (en) * | 1997-05-07 | 1998-11-17 | Hoshizaki Electric Co Ltd | Liquid stagnation prevention device of refrigerator and refrigerant recovery method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115443397A (en) * | 2020-04-27 | 2022-12-06 | 大金工业株式会社 | Refrigerant recovery control device and refrigerant recovery control system |
| CN112197455A (en) * | 2020-10-16 | 2021-01-08 | 珠海格力电器股份有限公司 | Air conditioning unit capable of recycling refrigerant and control method thereof |
| CN112197455B (en) * | 2020-10-16 | 2024-04-09 | 珠海格力电器股份有限公司 | Air conditioning unit capable of recycling refrigerant and control method thereof |
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