JPH03279767A - Refrigerant collection device - Google Patents
Refrigerant collection deviceInfo
- Publication number
- JPH03279767A JPH03279767A JP7708590A JP7708590A JPH03279767A JP H03279767 A JPH03279767 A JP H03279767A JP 7708590 A JP7708590 A JP 7708590A JP 7708590 A JP7708590 A JP 7708590A JP H03279767 A JPH03279767 A JP H03279767A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat exchanger
- recovery
- liquefied
- heating
- 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
- 239000003507 refrigerant Substances 0.000 title claims abstract description 83
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims description 56
- 238000005057 refrigeration Methods 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000009835 boiling Methods 0.000 abstract description 7
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/002—Collecting refrigerant from a cycle
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は例えば自動車用のエアコンに用いられるフロン
ガス等の冷媒を回収するための装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for recovering refrigerant such as fluorocarbon gas used, for example, in automobile air conditioners.
［従来の技術］
自動車用のクーラあるいはエアコンにおいては冷房回路
の冷媒としてフロンか用いられる。このフロンは大気中
に放出されると地球を取り巻くオゾン層に悪影響を与え
る。このため、例えば自動車を廃棄したりあるいはカー
クーラあるいはエアコンを修理する場合にはフロンガス
が大気中に放出することを防止し、また、生産量が限ら
れたフロンを再使用するため、冷凍回路からフロンを回
収する必要がある。従来フロン等の冷媒を回収する装置
として被回収冷凍回路から冷媒を取り出し、これを油成
分その他の不純物と分離し高純度のフロンガスとして再
生する装置が知られている。この様な再生機能を有する
装置は一旦回収した冷媒をポンプにより循環再生あるい
は圧縮再生するものであり、いずれも第１種高圧ガス製
造設備に属している。[Prior Art] In automobile coolers or air conditioners, fluorocarbons are used as a refrigerant in the cooling circuit. When this CFC is released into the atmosphere, it has a negative impact on the ozone layer surrounding the earth. For this reason, for example, when scrapping a car or repairing a car cooler or air conditioner, it is necessary to prevent fluorocarbon gas from being released into the atmosphere, and to reuse fluorocarbons, which are produced in limited quantities, by removing fluorocarbons from the refrigeration circuit. need to be collected. 2. Description of the Related Art Conventionally, as a device for recovering refrigerant such as fluorocarbon, there is a device that extracts the refrigerant from a refrigeration circuit to be recovered, separates it from oil components and other impurities, and regenerates it as high-purity fluorocarbon gas. An apparatus having such a regeneration function uses a pump to circulate or compress and regenerate the once recovered refrigerant, and both belong to type 1 high-pressure gas production equipment.
［発明が解決しようとする課題］
従来の再生機能を有する冷媒回収装置は、いわゆる第１
種高圧ガス製造設備に属し、その取扱いには一定の専門
知識や熟練を要し、手軽な取扱いができないためその普
及にも限界があった。これに対して第２種高圧ガス製造
設備に属する冷媒回収装置は取扱いは簡便であるがその
機能は単に冷媒を冷却液化して回収するのみであり再生
機能を備えていないため、回収した冷媒の再利用に隙し
ては問題となった。[Problems to be solved by the invention] Conventional refrigerant recovery devices with a regeneration function
It belongs to high-pressure gas production equipment, and its handling requires a certain amount of specialized knowledge and skill, and its widespread use has been limited because it cannot be handled easily. On the other hand, refrigerant recovery equipment belonging to class 2 high-pressure gas production equipment is easy to handle, but its function is simply to cool and liquefy the refrigerant and recover it, and it does not have a regeneration function. Failure to reuse it became a problem.
それ故に、本発明の課題は、上記従来の冷媒回収装置の
欠点を除去し冷媒の再生機能を有する簡易型の冷媒回収
装置を提供することにある。Therefore, an object of the present invention is to provide a simple refrigerant recovery device that eliminates the drawbacks of the conventional refrigerant recovery device and has a refrigerant regeneration function.
［課題を解決するための手段］
本発明によれば、冷却用冷媒をコンプレッサにより圧縮
した後コンデンサにより凝縮液化し、膨脹弁を介して熱
交換器の蒸発側経路に供給し、この熱交換器に供給され
た冷却用冷媒が再び前記コンプレッサの吸引側に戻され
るように構成された冷凍回路と、回収用冷媒を前記熱交
換器の凝縮側経路に供給し冷却液化された冷媒を回収す
る回収路とを備えた冷媒回収装置において、前記熱交換
器は第１および第２の凝縮側経路を備え、前記冷凍回路
は前記コンプレッサおよびコンデンサ間に挿入された加
熱熱交換器と、この加熱熱交換器に接続されたオイル回
収タンクとを備え、前記回収用冷媒は前記熱交換器の第
１の凝縮側経路に供給されて冷却液化された後、前記加
熱熱交換器に供給されて加熱され、加熱により気化した
回収用冷媒は前記熱交換器の第２の凝縮側経路に供給さ
れて冷却液化された後、回収タンクに回収されるととも
に、前記加熱熱交換器に供給されて気化されずに残留し
た油等の不純物は前記オイル回収タンクに回収されるよ
うに構成したことを特徴とする冷媒回収装置により、上
記の課題を達成するものである。[Means for Solving the Problems] According to the present invention, a cooling refrigerant is compressed by a compressor, then condensed and liquefied by a condenser, and supplied to the evaporation side path of a heat exchanger via an expansion valve. A refrigeration circuit configured to return the cooling refrigerant supplied to the compressor to the suction side of the compressor, and a recovery circuit configured to supply the recovery refrigerant to the condensation side path of the heat exchanger and recover the cooled and liquefied refrigerant. In the refrigerant recovery device, the heat exchanger includes a first and second condensing side path, and the refrigeration circuit includes a heating heat exchanger inserted between the compressor and the condenser, and a heating heat exchanger inserted between the compressor and the condenser. and an oil recovery tank connected to the heat exchanger, the recovery refrigerant is supplied to the first condensing side path of the heat exchanger to be cooled and liquefied, and then supplied to the heating heat exchanger and heated, The recovery refrigerant vaporized by heating is supplied to the second condensing side path of the heat exchanger, where it is cooled and liquefied, and then recovered into the recovery tank, and is also supplied to the heating heat exchanger without being vaporized. The above object is achieved by a refrigerant recovery device characterized in that impurities such as residual oil are recovered in the oil recovery tank.
［作用］
回収用冷媒は前記熱交換器の第１の凝縮側経路に供給さ
れて冷却液化された後、前記加熱熱交換器に供給されて
加熱され、加熱により気化した回収用冷媒は前記熱交換
器の第２の凝縮側経路に供給されて冷却液化された後、
回収タンクに回収されるとともに、前記加熱熱交換器に
供給されて気化されずに残留した油等の不純物は前記オ
イル回収タンクに回収される。[Function] The recovery refrigerant is supplied to the first condensation side path of the heat exchanger and is cooled and liquefied, and then supplied to the heating heat exchanger and heated, and the recovery refrigerant that has been vaporized by heating absorbs the heat. After being supplied to the second condensing side path of the exchanger and being cooled and liquefied,
The oil is collected in the oil recovery tank, and impurities such as oil that is supplied to the heating heat exchanger and remains without being vaporized is collected in the oil recovery tank.
［実施例］ 以下本発明の一実施例を図面を参照して説明する。[Example] An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例である冷媒回収装置、の構成
を示す概略構成図である。冷凍回路１０は、コンプレッ
サ１１、加熱用熱交換器１２、コンデンサ１３、レシー
バドライヤ１４、膨脹弁１５、冷却用熱交換器１６、が
直列に接続された閉回路により構成されている。加熱用
熱交換器１２はコンプレッサ１１からの圧縮された高圧
高温気状冷媒が供給され放熱する一次経路１２ａと、こ
の−次続路１２ａとの間で熱交換し、加熱用熱交換器１
２内部を通過する冷媒が加熱される二次経路１２ｂとを
有している。この加熱用熱交換器１２には、また、オイ
ル回収タンク１７が手動バルブ１８を介して接続されて
いる。冷却用熱交換器１６は膨脹弁１５を通過した冷却
用冷媒が供給される蒸発側経路１６ａと、この蒸発側経
路１．６ａとの間で熱交換し、冷却′用熱交換器１６内
部を通過する冷媒が冷却される第１および第２の凝縮側
経路１６ｂ、１６ｃを備えている。FIG. 1 is a schematic configuration diagram showing the configuration of a refrigerant recovery device that is an embodiment of the present invention. The refrigeration circuit 10 is constituted by a closed circuit in which a compressor 11, a heating heat exchanger 12, a condenser 13, a receiver dryer 14, an expansion valve 15, and a cooling heat exchanger 16 are connected in series. The heating heat exchanger 12 exchanges heat between a primary path 12a to which compressed high-pressure high-temperature gaseous refrigerant is supplied from the compressor 11 and radiates heat, and this secondary path 12a.
2, and a secondary path 12b through which the refrigerant passing through is heated. An oil recovery tank 17 is also connected to this heating heat exchanger 12 via a manual valve 18. The cooling heat exchanger 16 exchanges heat between the evaporation side path 16a, to which the cooling refrigerant that has passed through the expansion valve 15 is supplied, and this evaporation side path 1.6a, and the inside of the cooling heat exchanger 16 is It includes first and second condensing side paths 16b and 16c through which the refrigerant passing therethrough is cooled.
冷却用熱交換器１６には回収路２０が接続されている。A recovery path 20 is connected to the cooling heat exchanger 16 .
この回収路２０は、インレット２１と、このインレット
２１と冷却用熱交換器１６の第１の凝縮側経路１６ｂの
入口とを接続する第１流路２０ａと、第１の凝縮側経路
１６ｂの出口と加熱用熱交換器］２の二次経路］、 ２
ｂの入口とを接続する第２流路２０ｂと、二次経路１
２ｂの出口と冷却用熱交換器］６の第２の凝縮側経路１
６ｃの人口とを接続する第３流路２０ｃと、第２の凝縮
側経路１６ｃの出口に接続された第４流路２０ｄと、こ
の第４流路２０ｄの途中に配設されたフィルタドライヤ
２２と、第４流路２０ｄの末端に接続された冷媒回収タ
ンク２３と、この冷媒回収タンク２３と第３流路２０ｃ
とを連通ずる均圧管２４とから成る。The recovery path 20 includes an inlet 21, a first flow path 20a connecting the inlet 21 and the inlet of the first condensing side path 16b of the cooling heat exchanger 16, and an outlet of the first condensing side path 16b. and heating heat exchanger] 2 secondary path], 2
A second flow path 20b connecting the inlet of b and the secondary path 1
2b outlet and cooling heat exchanger] 6 second condensing side path 1
6c, a fourth flow path 20d connected to the outlet of the second condensing side path 16c, and a filter dryer 22 disposed in the middle of this fourth flow path 20d. , a refrigerant recovery tank 23 connected to the end of the fourth flow path 20d, and a refrigerant recovery tank 23 and the third flow path 20c.
and a pressure equalizing pipe 24 that communicates with the
次にこのように構成された冷媒回収装置の動作を説明す
る。冷凍回路１０内には例えば冷媒Ｒ５０２か循環して
いる。即ち、冷媒はコンプレ・ソザ１］により圧縮され
加熱用熱交換器１２て放熱し、さらにコンデンサ１３に
おいて放熱し、凝縮液化される。液化された冷媒はレノ
−７１ドライヤ］４に蓄えられ液体冷媒のみか抽出され
、膨脹弁］５を介して膨張させられる。この冷媒は冷却
用熱交換器１６の蒸発側経路１６ａに供給され、この冷
却用熱交換器］６の内部で蒸発、気化される。Next, the operation of the refrigerant recovery device configured as described above will be explained. For example, refrigerant R502 circulates within the refrigeration circuit 10. That is, the refrigerant is compressed by the compressor/sodzer 1, radiates heat in the heating heat exchanger 12, further radiates heat in the condenser 13, and is condensed and liquefied. The liquefied refrigerant is stored in a Leno-71 dryer 4, where only the liquid refrigerant is extracted and expanded through an expansion valve 5. This refrigerant is supplied to the evaporation side path 16a of the cooling heat exchanger 16, and is evaporated and vaporized inside the cooling heat exchanger]6.
蒸発側経路１６ａの出口側には冷媒の温度を検知する感
温筒１９が設置されており、この出力により膨脹弁１５
の開口度が調整される。A temperature sensing tube 19 is installed on the exit side of the evaporation side path 16a to detect the temperature of the refrigerant, and this output causes the expansion valve 15 to
The degree of opening is adjusted.
冷却用熱交換器１６の第１の凝縮側経路１６ｂの人口に
は回収路２０のインレット２１から霧状の油分を含む回
収用冷媒例えばＲ−１２が供給される。回収用冷媒はこ
こで冷却液化され、加熱用熱交換器１２の二次経路１２
ｂに供給される。ここで、冷却用熱交換器１６と加熱用
熱交換器１２の位置関係を液化された回収用冷媒がその
重力により加熱用熱交換器１２の二次経路］、 ２ ｂ
に供給されるように選定するとより効果的である。液化
された回収用冷媒は加熱用熱交換器１２の二次経路１２
ｂて加熱され、沸点の低い回収用冷媒は蒸発気化される
。他方、沸点の高い油分その他の不純物は加熱用熱交換
器１２内に残留し、手動バルブ１８を開くことによりオ
イル回収タンク１７に回収される。加熱用熱交換器１２
の二次経路１２ｂで加熱され蒸発気化された回収用冷媒
は冷却用熱交換器１６の第２の凝縮側経路１６ｃで再び
冷却液化される。液化された回収用冷媒はフィルタドラ
イヤ２２により乾燥され、極微量な不純物が除去された
後、冷媒回収タンク２３に回収される。A recovery refrigerant containing a mist of oil, such as R-12, is supplied to the first condensing side path 16b of the cooling heat exchanger 16 from the inlet 21 of the recovery path 20. The refrigerant for recovery is cooled and liquefied here, and then transferred to the secondary path 12 of the heating heat exchanger 12.
b. Here, the positional relationship between the cooling heat exchanger 16 and the heating heat exchanger 12 is such that the liquefied recovery refrigerant is transferred to the secondary path of the heating heat exchanger 12 due to its gravity], 2 b
It will be more effective if the material is selected so that it is supplied to The liquefied recovery refrigerant is passed through the secondary path 12 of the heating heat exchanger 12.
b, and the recovery refrigerant having a low boiling point is evaporated. On the other hand, oil with a high boiling point and other impurities remain in the heating heat exchanger 12 and are recovered in the oil recovery tank 17 by opening the manual valve 18. Heating heat exchanger 12
The recovery refrigerant heated and evaporated in the secondary path 12b is cooled and liquefied again in the second condensing side path 16c of the cooling heat exchanger 16. The liquefied recovery refrigerant is dried by a filter dryer 22 to remove extremely small amounts of impurities, and then recovered in a refrigerant recovery tank 23.
以上のようにこの冷媒回収装置では回収用冷媒の冷却液
化、加熱蒸溜、再冷却液化により回収用冷媒の再生がで
きる。As described above, in this refrigerant recovery apparatus, the refrigerant for recovery can be regenerated by cooling and liquefying the refrigerant, heating distillation, and re-cooling and liquefying the refrigerant.
なお、第１図の装置において、オイル回収タンク１７を
コンデンサ１３に近接配置し、コンデンサ１３から放出
される熱でオイル回収タンク１７を加熱することにより
、冷媒を含有する油分からさらに冷媒を分離抽出するこ
とかできる。In the apparatus shown in FIG. 1, the oil recovery tank 17 is placed close to the condenser 13, and by heating the oil recovery tank 17 with the heat released from the condenser 13, the refrigerant is further separated and extracted from the oil containing the refrigerant. I can do something.
また、第１図において、実線は液状冷媒の流れを、破線
は気状冷媒の流れを、そして−点鎖線はオイルの流れを
それぞれ示している。Further, in FIG. 1, the solid line shows the flow of liquid refrigerant, the broken line shows the flow of gaseous refrigerant, and the dashed line shows the flow of oil.
さらに、冷却用冷媒Ｒ−５０２、回収用冷媒Ｒ］２の沸
点はそれぞれ−４５，６℃、−２９゜８℃であり、冷却
用の冷媒の沸点が回収用冷媒の沸点より低くなるように
選定されている。Furthermore, the boiling points of cooling refrigerant R-502 and recovery refrigerant R]2 are -45.6°C and -29°8°C, respectively, so that the boiling point of the cooling refrigerant is lower than the boiling point of the recovery refrigerant. Selected.
［発明の効果］
本発明の冷媒回収装置によれば、第２種高圧ガス製造設
備に属する簡易型の冷媒回収装置により回収した冷媒を
再利用に適するように再生することができる。[Effects of the Invention] According to the refrigerant recovery device of the present invention, the refrigerant recovered by the simple refrigerant recovery device belonging to the second-class high-pressure gas production equipment can be regenerated to be suitable for reuse.
第１図は本発明の実施例である冷媒回収装置の構成を示
す概略構成図である。
１０・・・冷凍回路、１１・・・コンプレッサ０．１２
・加熱用熱交換器、１３・・・コンデンサ、１４・・・
レンーバドライヤ、１５・・・膨脹弁、１６・・・冷却
用熱交換器、１６ａ・・・蒸発側経路、１６ｂ・・・第
１の凝縮側経路、１６ｃ・・・第２の凝縮側経路、１７
・・・オイル回収タンク、１８・・・手動バルブ、１９
・・・感温筒、２０・・・回収路、２１・・・インレッ
ト、２２・・・フィルタドライヤ、２３・・・冷媒回収
タンク、２４・・・均圧管。FIG. 1 is a schematic configuration diagram showing the configuration of a refrigerant recovery device according to an embodiment of the present invention. 10... Refrigeration circuit, 11... Compressor 0.12
・Heating heat exchanger, 13...condenser, 14...
Rember dryer, 15... Expansion valve, 16... Cooling heat exchanger, 16a... Evaporation side path, 16b... First condensation side path, 16c... Second condensation side path, 17
...Oil recovery tank, 18...Manual valve, 19
... Temperature sensing cylinder, 20 ... Recovery path, 21 ... Inlet, 22 ... Filter dryer, 23 ... Refrigerant recovery tank, 24 ... Pressure equalization pipe.
Claims (1)
ンサにより凝縮液化し、膨脹弁を介して熱交換器の蒸発
側経路に供給し、この熱交換器に供給された冷却用冷媒
が再び前記コンプレッサの吸引側に戻されるように構成
された冷凍回路と、回収用冷媒を前記熱交換器の凝縮側
経路に供給し冷却液化された冷媒を回収する回収路とを
備えた冷媒回収装置において、前記熱交換器は第１およ
び第２の凝縮側経路を備え、前記冷凍回路は前記コンプ
レッサおよびコンデンサ間に挿入された加熱熱交換器と
、この加熱熱交換器に接続されたオイル回収タンクとを
備え、前記回収用冷媒は前記熱交換器の第１の凝縮側経
路に供給されて冷却液化された後、前記加熱熱交換器に
供給されて加熱され、加熱により気化した回収用冷媒は
前記熱交換器の第２の凝縮側経路に供給されて冷却液化
された後、回収タンクに回収されるとともに、前記加熱
熱交換器に供給されて気化されずに残留した油等の不純
物は前記オイル回収タンクに回収されるように構成した
ことを特徴とする冷媒回収装置。1. After the cooling refrigerant is compressed by a compressor, it is condensed and liquefied by a condenser, and then supplied to the evaporation side path of the heat exchanger via an expansion valve.The cooling refrigerant supplied to this heat exchanger is then returned to the suction of the compressor In the refrigerant recovery device, the refrigerant recovery device includes a refrigeration circuit configured to return the refrigerant to the heat exchanger, and a recovery path that supplies the recovery refrigerant to the condensation side path of the heat exchanger and recovers the cooled and liquefied refrigerant. the refrigeration circuit includes a heating heat exchanger inserted between the compressor and the condenser, and an oil recovery tank connected to the heating heat exchanger; The recovery refrigerant is supplied to the first condensing side path of the heat exchanger and is liquefied by cooling, and then supplied to the heating heat exchanger and heated, and the recovery refrigerant vaporized by heating is liquefied by cooling. After being supplied to the second condensing side path and being cooled and liquefied, it is collected in a recovery tank, and impurities such as oil that remains without being vaporized after being supplied to the heating heat exchanger are collected in the oil recovery tank. A refrigerant recovery device characterized in that it is configured to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7708590A JPH03279767A (en) | 1990-03-28 | 1990-03-28 | Refrigerant collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7708590A JPH03279767A (en) | 1990-03-28 | 1990-03-28 | Refrigerant collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03279767A true JPH03279767A (en) | 1991-12-10 |
Family
ID=13623944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7708590A Pending JPH03279767A (en) | 1990-03-28 | 1990-03-28 | Refrigerant collection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03279767A (en) |
-
1990
- 1990-03-28 JP JP7708590A patent/JPH03279767A/en active Pending
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