JP6153906B2 - Refrigerant recovery device for turbo refrigerator - Google Patents
Refrigerant recovery device for turbo refrigerator Download PDFInfo
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- JP6153906B2 JP6153906B2 JP2014182691A JP2014182691A JP6153906B2 JP 6153906 B2 JP6153906 B2 JP 6153906B2 JP 2014182691 A JP2014182691 A JP 2014182691A JP 2014182691 A JP2014182691 A JP 2014182691A JP 6153906 B2 JP6153906 B2 JP 6153906B2
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Description
本発明は、ターボ冷凍機の定期整備作業の際に、ターボ冷凍機の冷媒を一時的に排出させて回収するに好適なターボ冷凍機の冷媒回収装置に関する。 The present invention relates to a refrigerant recovery apparatus for a turbo chiller suitable for temporarily discharging and collecting the refrigerant of the turbo chiller during periodic maintenance work of the turbo chiller.
一般に、冷凍空調装置などに利用されるターボ冷凍機においては、ターボ冷凍機の長時間の稼動によって劣化した構成部品（ガスケット、Ｏリング、オイルポンプ、ベアリング等）を定期整備作業にて交換する必要がある。この交換作業を行う際には、一旦、ターボ冷凍機内に収容されている冷媒（フルオロカーボン）をターボ冷凍機の外部に排出させて回収することが必要になる。 In general, in a centrifugal chiller used for a refrigeration air conditioner, etc., it is necessary to replace components (gaskets, O-rings, oil pumps, bearings, etc.) that have deteriorated due to the long-term operation of the turbo chiller during regular maintenance work. There is. When performing this replacement work, it is necessary to once collect the refrigerant (fluorocarbon) accommodated in the turbo refrigerator by discharging it to the outside of the turbo refrigerator.
前述した構成部品の交換の際には、冷媒を冷媒ボンベ、あるいは冷媒回収装置を使用して回収していたが、ターボ冷凍機の冷媒の封入量は５００ｋｇから３０００ｋｇに達するため、冷媒の回収が完了するまでに通常、２日間から５日間の作業期間が必要であった。 At the time of replacement of the above-described components, the refrigerant was recovered using a refrigerant cylinder or a refrigerant recovery device. However, since the amount of refrigerant contained in the turbo chiller reaches 500 kg to 3000 kg, the refrigerant cannot be recovered. It usually required a work period of 2 to 5 days to complete.
このような冷媒回収の所定時間を短縮するための技術として従来、特許文献１に、ターボ冷凍機の底部に加熱手段を設置し、ターボ冷凍機の底部を加熱することによってターボ冷凍機内部における低温凝縮を抑制し、冷媒の回収時間を短縮するようにした技術が開示されている。 Conventionally, as a technique for shortening the predetermined time for refrigerant recovery, Patent Document 1 discloses that a heating unit is installed at the bottom of the turbo chiller and the bottom of the turbo chiller is heated to lower the temperature inside the turbo chiller. A technique that suppresses condensation and shortens the recovery time of the refrigerant is disclosed.
しかしながら、特許文献１に開示されたターボ冷凍機の底部を加熱することにより冷媒の回収を行う従来技術においても、依然として冷媒回収までに２日間〜５日間の作業期間が必要になっていた。このようなことから、冷媒の回収に要する期間を更に短縮させることができる技術の開発が要望されていた。 However, even in the prior art in which the refrigerant is recovered by heating the bottom of the turbo refrigerator disclosed in Patent Document 1, an operation period of 2 to 5 days is still required until the refrigerant is recovered. For these reasons, there has been a demand for the development of a technique that can further shorten the period required for collecting the refrigerant.
本発明は、前述した従来技術における実情からなされたもので、その目的は、ターボ冷凍機の定期整備作業において、単位時間当たりの冷媒回収量を増加させることができるターボ冷凍機の冷媒回収装置を提供することにある。 The present invention has been made from the above-described situation in the prior art, and an object of the present invention is to provide a refrigerant recovery device for a turbo chiller that can increase the amount of refrigerant recovered per unit time in periodic maintenance work of the turbo chiller. It is to provide.
前記目的を達成するために、本発明に係るターボ冷凍機の冷媒回収装置は、蒸発器、圧縮機、及び凝縮器を有するターボ冷凍機の冷媒回収装置において、前記ターボ冷凍機の前記蒸発器内に、冷媒回収用パイプを設け、前記冷媒回収用パイプは、冷媒ガス及び冷媒液の吸い込みが可能な複数の開口部と、これらの開口部から吸い込まれる前記冷媒ガス及び冷媒液を整流する整流部とを有することを特徴としている。 In order to achieve the above object, a refrigerant recovery device for a turbo chiller according to the present invention is a refrigerant recovery device for a turbo chiller having an evaporator, a compressor, and a condenser. Provided with a refrigerant recovery pipe, the refrigerant recovery pipe having a plurality of openings capable of sucking refrigerant gas and refrigerant liquid, and a rectifying section for rectifying the refrigerant gas and refrigerant liquid sucked from the openings. It is characterized by having.
本発明に係るターボ冷凍機の冷媒回収装置は、冷媒回収用パイプの整流部で整流され、開口部から吸い込まれる冷媒ガスによって、冷媒回収用パイプ内に冷媒液及び冷媒ガスの渦を発生させることができる。この渦の力で冷媒回収用パイプから冷媒液を、蒸発器内の冷媒ガスをも巻き込みながら噴出させることができる。すなわち、冷媒液と冷媒ガスとを同時に排出させて回収することができる。これにより本発明は、単位時間内当りの冷媒回収量を増加させることができ、冷媒回収に要する期間を従来よりも短縮させることができる。 The refrigerant recovery device for a turbo chiller according to the present invention generates a vortex of the refrigerant liquid and the refrigerant gas in the refrigerant recovery pipe by the refrigerant gas rectified by the rectification unit of the refrigerant recovery pipe and sucked from the opening. Can do. With this vortex force, the refrigerant liquid can be ejected from the refrigerant recovery pipe while entraining the refrigerant gas in the evaporator. That is, the refrigerant liquid and the refrigerant gas can be simultaneously discharged and recovered. Thereby, this invention can increase the refrigerant | coolant collection amount per unit time, and can shorten the period which refrigerant | coolant collection requires compared with the past.
以下、本発明に係るターボ冷凍機の冷媒回収装置の実施の形態を図面に基づいて説明する。 Embodiments of a refrigerant recovery device for a turbo refrigerator according to the present invention will be described below with reference to the drawings.
［本実施形態に係る冷媒回収装置の適用対象となるターボ冷凍機について］
本実施形態の適用対象となるターボ冷凍機は、例えば図１に示すように、単段圧縮式冷凍装置であり、互いに隣接し、冷水にて熱を奪うことで冷媒液を蒸発させる蒸発器１、冷媒蒸気を圧縮する圧縮機３、及び冷却水へ熱を放出することで冷媒蒸気を凝縮させる凝縮器２を有している。
[Turbo chiller to which the refrigerant recovery apparatus according to this embodiment is applied]
The turbo chiller to which the present embodiment is applied is, for example, as shown in FIG. 1, a single-stage compression refrigeration apparatus, and an evaporator 1 that is adjacent to each other and evaporates a refrigerant liquid by taking heat away from cold water. The compressor 3 compresses the refrigerant vapor, and the condenser 2 condenses the refrigerant vapor by releasing heat to the cooling water.
ターボ冷凍機の定期整備作業の際には、前述したようにターボ冷凍機内の構成部品を交換するため、一旦、ターボ冷凍機内に収容されている冷媒液及び冷媒ガスをターボ冷凍機の外部へ排出させ、回収することが必要になる。 During periodic maintenance of the centrifugal chiller, as described above, in order to replace the components in the centrifugal chiller, the refrigerant liquid and the refrigerant gas stored in the turbo chiller are once discharged to the outside of the turbo chiller. And need to be recovered.
冷媒液及び冷媒ガスの排出、回収に際しては、冷媒ボンベ４と、蒸発器１に形成した冷媒取り出し口６との間に冷媒ホース５を接続して、冷媒ボンベ４へ冷媒液及び冷媒ガスを導いて、ターボ冷凍機内を真空状態にすることが行われる。その後、ターボ冷凍機内を開放して、前述した構成部品の交換作業を行い、ターボ冷凍機内の気密試験を実施した上で、回収した冷媒液及び冷媒ガスを再びターボ冷凍機へ注入することが行われる。 When discharging and collecting the refrigerant liquid and the refrigerant gas, the refrigerant hose 5 is connected between the refrigerant cylinder 4 and the refrigerant outlet 6 formed in the evaporator 1, and the refrigerant liquid and the refrigerant gas are guided to the refrigerant cylinder 4. Thus, the inside of the turbo refrigerator is evacuated. After that, the inside of the centrifugal chiller is opened, the above-described components are replaced, the airtightness test inside the turbo chiller is performed, and the recovered refrigerant liquid and refrigerant gas are injected again into the turbo chiller. Is called.
蒸発器１に形成した前述の冷媒取り出し口６と、この冷媒取り出し口６に一端が連結される前述の冷媒ホース５と、この冷媒ホース５の他端に連結され、冷媒取り出し口６から取り出され冷媒ホース５を介して導かれる冷媒液及び冷媒ガスを収容する前述の冷媒ボンベ４は、本実施形態に係る冷媒回収装置の基本的要素を構成している。 The refrigerant outlet 6 formed in the evaporator 1, the refrigerant hose 5 having one end connected to the refrigerant outlet 6, and the other end of the refrigerant hose 5 are connected to the refrigerant outlet 6 and taken out from the refrigerant outlet 6. The above-described refrigerant cylinder 4 that accommodates the refrigerant liquid and the refrigerant gas guided through the refrigerant hose 5 constitutes a basic element of the refrigerant recovery apparatus according to the present embodiment.
［本実施形態に係る冷媒回収装置について］
本実施形態に係る冷媒回収装置は、図１に示すように、蒸発器１内に冷媒回収用パイプ７を設けてある。この冷媒回収用パイプ７は、図２〜４に示すように、冷媒ガス１０及び冷媒液１１の吸い込みが可能な複数の開口部８と、これらの開口部８から吸い込まれる冷媒ガス１０及び冷媒液１１を整流する整流部とを有している。
[About the refrigerant recovery apparatus according to the present embodiment]
As shown in FIG. 1, the refrigerant recovery apparatus according to the present embodiment is provided with a refrigerant recovery pipe 7 in the evaporator 1. As shown in FIGS. 2 to 4, the refrigerant recovery pipe 7 includes a plurality of openings 8 capable of sucking the refrigerant gas 10 and the refrigerant liquid 11, and the refrigerant gas 10 and the refrigerant liquid sucked from the openings 8. 11 and a rectifying unit that rectifies 11.
整流部は、例えば板状の複数の羽根９から成り、これらの羽根９は、前述した開口部８のそれぞれの両側端縁のうちの同じ側に位置する一方の側端縁８ａに取り付けてある。 The rectifying unit includes, for example, a plurality of plate-like blades 9, and these blades 9 are attached to one side edge 8 a located on the same side of the both side edges of the opening 8 described above. .
また、本実施形態は、図１に示すように、冷媒回収用パイプ７の下端７ａを蒸発器１の冷媒取り出し口６に連結させてある。 In the present embodiment, as shown in FIG. 1, the lower end 7 a of the refrigerant recovery pipe 7 is connected to the refrigerant outlet 6 of the evaporator 1.
ターボ冷凍機内の冷媒の回収に際しては、図１に示すように、蒸発器１の冷媒取り出し口６に冷媒ホース５の一端が連結され、この冷媒ホース５の他端に冷媒ボンベ４が連結される。これにより図２〜４に示すように、冷媒回収用パイプ７の開口部８から吸い込まれた冷媒ガス１０によって、冷媒回収用パイプ７内に冷媒ガス１０と冷媒液１１の渦を発生させることができる。 When recovering the refrigerant in the turbo refrigerator, as shown in FIG. 1, one end of the refrigerant hose 5 is connected to the refrigerant outlet 6 of the evaporator 1, and the refrigerant cylinder 4 is connected to the other end of the refrigerant hose 5. . As a result, as shown in FIGS. 2 to 4, the refrigerant gas 10 sucked from the opening 8 of the refrigerant recovery pipe 7 can generate vortices of the refrigerant gas 10 and the refrigerant liquid 11 in the refrigerant recovery pipe 7. it can.
このように冷媒回収用パイプ７内に発生した渦の力で、冷媒回収用パイプ７の下端７ａから冷媒液１１は、蒸発器１内の冷媒ガスを巻き込みながら噴出し、冷媒取り出し口６を通過する。この冷媒取り出し口６を通過した冷媒液１１及び冷媒ガス１０は、冷媒ホース５を経由して、冷媒ボンベ４に導かれ、収容される。 The vortex force generated in the refrigerant recovery pipe 7 in this way causes the refrigerant liquid 11 to be ejected from the lower end 7 a of the refrigerant recovery pipe 7 while entraining the refrigerant gas in the evaporator 1, and passes through the refrigerant outlet 6. To do. The refrigerant liquid 11 and the refrigerant gas 10 that have passed through the refrigerant outlet 6 are guided to the refrigerant cylinder 4 via the refrigerant hose 5 and stored therein.
前述のように本実施形態に係る冷媒回収装置は、冷媒回収用パイプ７内で発生させた渦の力で、冷媒回収用パイプから冷媒液１１を、蒸発器１内の冷媒ガス１０をも巻き込みながら噴出させることができる。すなわち、冷媒液１１と冷媒ガス１０とを同時に排出させて回収することができる。これにより本実施形態は、単位時間内当りの冷媒回収量を増加させることができ、冷媒回収に要する期間を短縮させることができる。 As described above, the refrigerant recovery apparatus according to the present embodiment entrains the refrigerant liquid 11 from the refrigerant recovery pipe and the refrigerant gas 10 in the evaporator 1 by the vortex force generated in the refrigerant recovery pipe 7. It can be made to erupt. That is, the refrigerant liquid 11 and the refrigerant gas 10 can be simultaneously discharged and recovered. Thereby, this embodiment can increase the refrigerant | coolant collection amount per unit time, and can shorten the period which refrigerant | coolant collection requires.
１ 蒸発器
２ 凝縮器
３ 圧縮機
４ 冷媒ボンベ
５ 冷媒ホース
６ 冷媒取り出し口
７ 冷媒回収パイプ
７ａ 下端
８ 開口部
８ａ 側端縁
９ 羽根
１０ 冷媒ガス
１１ 冷媒液
DESCRIPTION OF SYMBOLS 1 Evaporator 2 Condenser 3 Compressor 4 Refrigerant cylinder 5 Refrigerant hose 6 Refrigerant outlet 7 Refrigerant recovery pipe 7a Lower end 8 Opening 8a Side edge 9 Blade 10 Refrigerant gas 11 Refrigerant liquid
Claims (3)
前記ターボ冷凍機の前記蒸発器内に、冷媒回収用パイプを設け、
前記冷媒回収用パイプは、冷媒ガス及び冷媒液の吸い込みが可能な複数の開口部と、これらの開口部から吸い込まれる前記冷媒ガス及び冷媒液を整流する整流部とを有することを特徴とするターボ冷凍機の冷媒回収装置。 In a refrigerant recovery device for a turbo refrigerator having an evaporator, a compressor, and a condenser,
In the evaporator of the turbo refrigerator, a refrigerant recovery pipe is provided,
The refrigerant recovery pipe has a plurality of openings through which refrigerant gas and refrigerant liquid can be sucked, and a rectifier that rectifies the refrigerant gas and refrigerant liquid sucked from these openings. Refrigerant refrigerant recovery device.
前記整流部は、板状の複数の羽根から成り、これらの羽根を前記複数の開口部のそれぞれの両側端縁のうちの同じ側に位置する一方の側端縁に取り付けたことを特徴とするターボ冷凍機の冷媒回収装置。 In the refrigerant recovery device of the turbo refrigerator according to claim 1,
The rectifying unit is composed of a plurality of plate-like blades, and these blades are attached to one side edge located on the same side of both side edges of the plurality of openings. Refrigerant recovery device for turbo chillers.
前記蒸発器に形成した冷媒取り出し口と、この冷媒取り出し口に一端を連結した冷媒ホースと、この冷媒ホースの他端に連結され、前記冷媒取り出し口から取り出され前記冷媒ホースを介して導かれる冷媒液及び冷媒ガスを収容する冷媒ボンベとを備え、前記冷媒回収用パイプの下端を前記冷媒取り出し口に連結したことを特徴とするターボ冷凍機の冷媒回収装置。 The refrigerant recovery device for a turbo refrigerator according to claim 2,
A refrigerant outlet formed in the evaporator, a refrigerant hose having one end connected to the refrigerant outlet, and a refrigerant connected to the other end of the refrigerant hose and taken out from the refrigerant outlet and guided through the refrigerant hose A refrigerant recovery apparatus for a turbo refrigerator, comprising a refrigerant cylinder for storing liquid and refrigerant gas, wherein a lower end of the refrigerant recovery pipe is connected to the refrigerant outlet.
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| JP2014182691A JP6153906B2 (en) | 2014-09-08 | 2014-09-08 | Refrigerant recovery device for turbo refrigerator |
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| JP2014182691A JP6153906B2 (en) | 2014-09-08 | 2014-09-08 | Refrigerant recovery device for turbo refrigerator |
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| JP2016056983A JP2016056983A (en) | 2016-04-21 |
| JP6153906B2 true JP6153906B2 (en) | 2017-06-28 |
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| JPS506172U (en) * | 1973-05-11 | 1975-01-22 | ||
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| JPS5344698B2 (en) * | 1973-06-25 | 1978-11-30 | ||
| JPH0610524B2 (en) * | 1987-07-10 | 1994-02-09 | 日本エア−カ−テン株式会社 | Artificial tornado type combustion device |
| JPH0762577B2 (en) * | 1990-04-24 | 1995-07-05 | ダイキン工業株式会社 | Turbo refrigerator |
| JP2588076B2 (en) * | 1991-07-30 | 1997-03-05 | 株式会社イナックス | Vacuum sewer system |
| US5375425A (en) * | 1992-11-25 | 1994-12-27 | Cobb; Douglas A. | Collection method for gaseous or liquid phase materials |
| JP3000236U (en) * | 1994-01-18 | 1994-08-02 | 中部増成機械工業株式会社 | Refrigerant receiver tank |
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