WO2005078364A1 - 可燃性冷媒処理装置及び処理方法 - Google Patents
可燃性冷媒処理装置及び処理方法 Download PDFInfo
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- WO2005078364A1 WO2005078364A1 PCT/JP2005/002415 JP2005002415W WO2005078364A1 WO 2005078364 A1 WO2005078364 A1 WO 2005078364A1 JP 2005002415 W JP2005002415 W JP 2005002415W WO 2005078364 A1 WO2005078364 A1 WO 2005078364A1
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- WIPO (PCT)
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- separation tank
- oil separation
- oil
- refrigerant
- flammable refrigerant
- Prior art date
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Classifications
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- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
Definitions
- the present invention relates to a flammable refrigerant processing apparatus and method for recovering and processing flammable gas from refrigeration equipment such as refrigerators and air conditioners using flammable gas as a refrigerant. is there.
- HCFC-based refrigerants or HFC-based refrigerants have been used to destroy the zoning layer or cause global warming.
- Refrigerators using HC-based refrigerants that do not affect global warming are gradually becoming popular.
- Patent Document 1 JP-A-11-125482
- the present invention has been made in view of such problems of the related art, and is intended to safely and reliably collect and treat flammable refrigerant from refrigeration equipment using flammable refrigerant. To provide an inexpensive flammable refrigerant processing apparatus and processing method that can be used!
- the present invention relates to a flammable refrigerant processing apparatus for processing a flammable refrigerant remaining in a refrigeration cycle of a refrigeration apparatus, and comprising: A sealed oil separation tank for separating machine oil, a vacuum unit for sucking the gas in the oil separation tank to generate a vacuum in the oil separation tank, and a pipe constituting a cooling / freezing cycle A piercing means for communicating with the oil separation tank, and driving the vacuum unit to generate a vacuum in the oil separation tank to suck the flammable refrigerant in the refrigeration cycle into the oil separation tank, It is characterized in that the combustible refrigerant stored in the inside is diluted with air and released.
- the vacuum unit can be constituted by a vacuum pump and an air drive motor provided in parallel with the vacuum pump to drive the vacuum pump.
- the flammable refrigerant stored in the oil separation tank is preferably diluted with the air discharged from the vacuum unit and discharged.
- the vacuum unit can be constituted by a vacuum pump and an explosion-proof electric motor which is provided in parallel with the vacuum pump and drives the vacuum pump, or can be constituted by an ejector.
- the flammable refrigerant stored in the oil separation tank can be diluted with the atmosphere and released.
- the other end of the air suction pipe is connected to the lower part of the oil separation tank, and the vacuum unit is driven to reduce the pressure in the oil separation tank to a negative pressure and store the oil in the oil separation tank.
- the air sucked from the air suction pipe into the refrigerating machine oil can be blown out in a foam.
- one end of the compressed air supply pipe is connected to a lower part of the oil separation tank, and compressed air is supplied to the oil separation tank from the compressed air supply pipe to compress the oil into the chiller oil stored in the oil separation tank. Air may be blown out in a foam.
- the inner pipe provided in the oil separation tank is communicated with the perforating means, and the flammable refrigerant sucked into the oil separation tank through the refrigeration cycle inner pipe is stored in the oil separation tank. It can be blown out into the machine oil in the form of foam.
- a waste oil tank that can communicate with the bottom surface of the oil separation tank is provided, and the waste oil tank is provided inside the oil separation tank. Compressed air should be introduced to discharge the refrigerating machine oil stored in the oil separation tank to the waste oil tank.
- the flammable refrigerant treatment method for treating the flammable refrigerant remaining in the refrigeration cycle of the refrigeration equipment involves generating a vacuum in the oil separation tank and connecting the oil separation tank to the refrigeration cycle to perform refrigeration.
- the flammable refrigerant in the cycle and the refrigerating machine oil are sucked into the oil separation tank, and the flammable refrigerant stored in the oil separation tank is diluted with air and released to the atmosphere.
- the vacuum unit is driven to generate a vacuum in the oil separation tank, the flammable refrigerant in the refrigeration cycle is stored in the oil separation tank, and the stored flammable refrigerant is diluted with air and released.
- the flammable refrigerant processing device that can safely and reliably process flammable refrigerant.
- the refrigerant released to the atmosphere is diluted with compressed air, the dilution ratio can be further increased, and safety is improved.
- the vacuum unit is constituted by a vacuum pump and an air drive motor for driving the vacuum pump, an explosion-proof electric motor, or an ejector, a safe and inexpensive combustible refrigerant processing apparatus is provided. can do.
- the refrigerant is used to publish the refrigeration oil stored in the oil separation tank, so that the flammable refrigerant dissolved in the refrigeration oil can be separated by refrigeration oil power, and the separated flammable refrigerant can be safely and reliably removed to the atmosphere. Can be released.
- FIG. 1 is a piping diagram of a combustible refrigerant processing apparatus according to a first embodiment of the present invention.
- Fig. 2 shows the concentration of isobutane discharged for 5 minutes after the start-up of the device after the isobutane sucked by the vacuum pump was diluted by the exhaust air of the air drive motor in the flammable refrigerant treatment device of Fig. 1.
- FIG. 1 is a piping diagram of a combustible refrigerant processing apparatus according to a first embodiment of the present invention.
- Fig. 2 shows the concentration of isobutane discharged for 5 minutes after the start-up of the device after the isobutane sucked by the vacuum pump was diluted by the exhaust air of the air drive motor in the flammable refrigerant treatment device of Fig. 1.
- FIG. 3 shows the concentration of the discharged isobutane for 25 minutes after the start of the device after the isobutane sucked by the vacuum pump is diluted by the discharged air of the air drive motor in the combustible refrigerant treatment device of Fig. 1.
- FIG. 3 shows the concentration of the discharged isobutane for 25 minutes after the start of the device after the isobutane sucked by the vacuum pump is diluted by the discharged air of the air drive motor in the combustible refrigerant treatment device of Fig. 1.
- Fig. 4 is a graph showing the results obtained by collecting exhaust gas in a Tedlar bag at a certain time after starting the vacuum pump and quantifying isobutane at each time when isobutane was quantified.
- FIG. 5 is a graph in which the graph of FIG. 2 and the graph of FIG. 4 are superimposed.
- FIG. 6 is a graph showing the dissolved amount of isobutane in refrigerating machine oil at constant temperature.
- FIG. 7 is a graph showing the amount of isobutane dissolved in refrigerating machine oil in the region where the isobutane concentration is 0.2 wt% or less.
- FIG. 8 is a graph showing the isobutane dissolved amount in FIG. 6 in terms of% by volume.
- FIG. 9 is a graph showing the amount of isobutane dissolved in FIG. 7 in terms of% by volume.
- FIG. 10 is a piping diagram of a combustible refrigerant processing apparatus according to Embodiment 2 of the present invention.
- FIG. 11 is a piping diagram of a modified example of the combustible refrigerant processing apparatus of FIG. 10.
- FIG. 12 is a piping diagram of another modified example of the combustible refrigerant processing apparatus of FIG. 10.
- FIG. 13 is a piping diagram of a combustible refrigerant processing apparatus according to Embodiment 3 of the present invention.
- FIG. 14 is a piping diagram of a combustible refrigerant processing apparatus according to Embodiment 4 of the present invention.
- FIG. 15 is a piping diagram of a modified example of the combustible refrigerant processing apparatus of FIG. 14.
- FIG. 16 is a piping diagram of another modified example of the combustible refrigerant processing apparatus of FIG. 14. Explanation of symbols
- Oil separation tank 2 Oil separation tank, 2a Oil separation tank top, 2b Oil separation tank bottom,
- FIG. 1 shows a flammable refrigerant treatment apparatus A according to Embodiment 1 of the present invention.
- the flammable refrigerant remaining in a refrigeration cycle of a used refrigerator is recovered to a concentration at which there is no risk of explosion.
- HC (noid-port carbon) refrigerants such as isobutane and propane are mainly used as flammable refrigerants.
- the flammable refrigerant treatment device A includes a sealed oil separation tank 2 for separating flammable refrigerant and refrigeration oil, A vacuum unit is provided to generate a vacuum in the oil separation tank 2 by sucking gas, and the vacuum tube is used to drive the vacuum pump 4 which is provided in parallel with the vacuum pump 4.
- the air drive motor 6 is a driving source of the motor.
- One end of a refrigerant recovery hose 10 to which an on-off valve 8 is attached is connected to the oil separation tank 2, and the other end of the refrigerant recovery hose 10 is connected to a gauge manager having two combined meters 12, 14.
- the hold 15 is connected, and connected to piercing jigs 24 and 26 as perforation means via two refrigerant recovery hoses 20 and 22 to which on-off valves 16 and 18 are attached.
- the piercing jigs 24 and 26 make holes in the high-pressure side pipe 32 and the low-pressure side pipe 34 of the compressor 30 provided inside the refrigerator 28 using an HC-based refrigerant (for example, isobutane) with needles.
- HC-based refrigerant for example, isobutane
- One end of the refrigerant recovery hose 10 to which the on-off valve 8 is attached is connected to the inner pipe 36 of the oil separation tank 2, and the inner pipe 36 extends from the upper surface 2a to the bottom surface 2b of the oil separation tank 2. are doing.
- a compound gauge 38 is attached to the upper surface 2 a of the oil separation tank 2, and is connected to the vacuum pump 4 via a refrigerant discharge pipe 44 to which an on-off valve 40 and a check valve 42 are attached.
- a refrigerant discharge pipe 48 to which the check valve 46 is attached is connected to the vacuum pump 4, and the other end of the refrigerant discharge pipe 48 is open to the atmosphere.
- the air drive motor 6 juxtaposed to the vacuum pump 4 is connected to a compressed air source 54 via a compressed air supply pipe 52 to which an on-off valve 50 is attached, and is also connected via an exhaust pipe 55
- the compressed air supply pipe 52 between the on-off valve 50 and the compressed air source 54, and the refrigerant discharge pipe 44 between the oil separation tank 2 and the on-off valve 40 are connected to the refrigerant discharge pipe 48. It is connected by an oil discharge air pipe 58 to which a valve 56 is attached.
- the bottom surface 2b of the oil separation tank 2 is connected to a waste oil tank 66 via an oil recovery pipe 64 to which an on-off valve 62 is attached.
- the compressed air from the compressed air source 54 is supplied to the air drive motor 6 through the compressed air supply pipe 52.
- the air drive motor 6 is driven to rotate, and the vacuum pump 4 operates to release the gas in the oil separation tank 2 to the atmosphere via the refrigerant discharge pipes 44 and 48.
- the compressed air supplied from the compressed air source 54 to the air drive motor 6 via the compressed air supply pipe 52 is similarly discharged to the atmosphere via the exhaust pipe 55 and the refrigerant discharge pipe 48.
- the pressure inside the oil separation tank 2 is gradually reduced, and the compound gauge 38 confirms that the pressure inside the oil separation tank 2 has decreased to a predetermined pressure (for example, 0. IMPa) or less.
- the on-off valve 8 is opened, and the refrigerant in the refrigerating cycle and the refrigerating machine oil are simultaneously sucked into the oil separation tank 2. Since the refrigerant in the refrigeration cycle is sucked into the oil separation tank 2 via the inner pipe 36 of the oil separation tank 2, the refrigerant is bubbled into the collected refrigerating machine oil from the tip (lower end) of the inner pipe 36. Spouts. In addition, the refrigeration oil in the oil separation tank 2 is agitated by the blowing of the refrigerant bubbles, and the refrigerant dissolved in the refrigeration oil is separated by the refrigeration oil power (publishing action).
- the refrigerant in the refrigerating cycle and the refrigerating machine oil are sucked into the oil separation tank 2 for a predetermined time (for example, 25 minutes), and the pressures of the high-pressure side pipe 32 and the low-pressure side pipe 34 are set to a predetermined value by the combined meters 12 and 14.
- the piercing jigs 24 and 26 are connected to the high-pressure side pipe 32 and the low-pressure side pipe of the compressor 30 with the on-off valves 8, 16 and 18 opened. Removed from 34.
- the piercing jigs 24, 26 are removed from the high-pressure side pipe 32 and the low-pressure side pipe 34 of the compressor 30 while the on-off valves 8, 16, 18 are open, the piercing jigs 24, 26. Then, the surrounding air is sucked, introduced into the oil separation tank 2 through the refrigerant recovery hoses 20, 22, and 10, and blows out into the collected refrigerating machine oil from the tip (lower end) of the inner pipe 36 in a foamy state. In addition, the blowing of air bubbles causes the refrigerating machine oil in the oil separation tank 2 to be agitated, and the refrigerant dissolved in the refrigerating machine oil to be separated from the refrigerating machine oil (publishing action).
- the refrigerant separated from the refrigerating machine oil is sucked by the vacuum pump 4 together with the gas refrigerant stored in the upper part of the oil separation tank 2, and is discharged to the atmosphere via the refrigerant discharge pipe 48, but is discharged. It is diluted by the exhaust air from the air drive motor 6 which is released to the atmosphere via the exhaust pipe 55 before. Therefore, the compressed air supplied from the compressed air source 54 to the air drive motor 6 according to the amount of the gas refrigerant stored in the oil separation tank 2 (the amount of the refrigerant recovered from the refrigeration cycle of the refrigerator 28) By selecting the amount of refrigerant, the concentration of the refrigerant discharged to the atmosphere can be set to a predetermined concentration (for example, 1. Ovol% or less) that does not cause a risk of explosion, and the driving source of the vacuum pump 4 By using a completely explosion-proof air drive motor 6 that does not use electricity at all, safety in refrigerant recovery can be ensured.
- a predetermined concentration for example, 1. Ovol%
- the on-off valve 8 is closed, and holes are made in the two pipes of the compressor of the next refrigerator with the piercing jigs 24 and 26. Then, the next refrigerant recovery is performed, and by repeating this, the refrigerant recovery of many used refrigerators can be performed continuously.
- the refrigerating machine oil stored in the lower part of the oil separation tank 2 is attached to the on-off valve 56 and the oil recovery pipe 64 attached to the oil discharge air pipe 58 with the on-off valves 8, 40 closed.
- the open / close valve 62 is opened, the compressed air supplied from the compressed air source 54 forcibly collects the waste oil in the waste oil tank 66.
- the oil separation tank 2 is preferably made of a transparent material, and the amount of refrigerating machine oil stored in the oil separation tank 2 is visually recognized from the outside, so that the refrigerating machine oil is discharged from the oil separation tank 2. Can be performed efficiently.
- the amount of the refrigerant that dissolves in the refrigerating machine oil varies depending on the type of the refrigerant and the combination with the refrigerating machine oil. If the refrigerant easily dissolves in the refrigerating machine oil, the open end of the inner pipe 36 in the oil separation tank 2 is frozen. It is preferable to arrange it near the liquid level of the machine oil. By setting as described above, the amount of the refrigerant dissolved into the refrigerating machine oil can be reduced as much as possible, and the vibration of the refrigerating machine oil can promote the elution of the refrigerating machine oil-powered refrigerant.
- the inner pipe 36 may be attached to the oil separation tank 2 so as to be able to move up and down, and the position of the open end of the inner pipe 36 may be adjusted according to the level of the refrigerating machine oil in the oil separation tank 2.
- the refrigerant collection hose 10 is connected to a set of refrigerant extraction means (couplers 12, 14, on-off valves 16, 18, piercing jigs 24, 26).
- a plurality of sets of refrigerant extracting means may be connected to the base 10 via a plurality of on-off valves.
- refrigerant cannot be collected when the refrigerant extracting means is attached to or detached from the refrigeration equipment.However, the use of multiple sets of refrigerant extracting means makes it possible to collect refrigerant. It can be performed efficiently and the amount of processing can be increased.
- the vacuum unit is constituted by the vacuum pump 4 and the air drive motor 6, but the ejector is adopted as the vacuum unit, and the compressed air is supplied to the ejector so that the oil is supplied.
- the combustible refrigerant in the oil separation tank 2 can be diluted with compressed air supplied to the ejector and released to the atmosphere.
- Vacuum unit vacuum pump, air drive motor, etc.
- Isobutane refrigerant charge approx. 65gZ level (370-470L)
- Refrigerator oil filling amount about 215ccZ level (370-470L)
- Isobutane refrigerant charge approx. 65gZ level (370-470L)
- Refrigerator oil filling amount about 215ccZ level (370-470L)
- FIGS. 2 and 3 show that isobutane sucked by the vacuum pump 4 is Fig. 2 shows the concentration of the discharged isobutane after being diluted with the discharged air of Fig. 2, Fig. 2 shows the concentration for 5 minutes after the start of the device, and Fig. 3 shows the concentration for 25 minutes after the start of the device.
- the analysis method and analyzer were as follows.
- Fig. 4 shows that the exhaust gas was collected in a 1L Tedlar bag at a certain time after the start of the vacuum pump 4, and the isobutane was quantified by gas chromatography (FID) analysis at each time.
- the figure shows the concentration of discharged isobutane.
- the analyzer and the analysis conditions are as follows.
- Fig. 6 shows the amount of isobutane dissolved in the refrigerating machine oil at a constant temperature
- Fig. 7 shows the amount of isobutane dissolved in the refrigerating machine oil in a region where the isobutane concentration is 0.2 wt% or less. 6 and 7 show the dissolved amount of isobutane in wt%
- FIGS. 8 and 9 show the dissolved amount of isobutane in vol%.
- the analysis method, analyzer, and analysis conditions were as follows.
- the isobutane dissolved capacity in the refrigerating machine oil was 0.015 wt% or less after leaving it for 1 week in a 20 ° C environment and 2 weeks in a 0 ° C environment.
- the flash point of refrigerating machine oil is 70 ° or higher, and there is no need to treat it as “waste oil of specially controlled industrial waste”. That is, if the compressor after the refrigerant recovery process is left for 2 weeks by evacuation for 25 minutes to remove the refrigerating machine oil from the compressor, the amount of isobutane dissolved in the refrigerating machine oil will decrease to a predetermined amount that satisfies the safety standards .
- waste oil of specially controlled industrial waste refers to waste oil of a volatile oil, kerosene, or light oil having a flash point of less than 70 ° C.
- the refrigerant recovery time could be reduced from two weeks to about two hours.
- FIG. 10 shows a flammable refrigerant processing apparatus A1 according to a second embodiment of the present invention, which has an explosion-proof electric motor 70 in place of the vacuum pump 4 used in the first embodiment. Using a vacuum pump 4A.
- the compressed air source 54 is connected only to the oil discharge air pipe 58, and the refrigerant discharge pipe 48 is connected to the atmospheric suction pipe 72.
- the vacuum pump 4A When power is supplied to the electric motor 70 in the flammable refrigerant processing apparatus A1 having the above-described configuration, the vacuum pump 4A operates and the gas in the oil separation tank 2 is released to the atmosphere via the refrigerant discharge pipes 44 and 48. It is released to. [0050] The refrigerant separated from the refrigerating machine oil in the oil separation tank 2 is sucked by the vacuum pump 4A together with the gas refrigerant stored in the upper part of the oil separation tank 2, and discharged to the atmosphere through the refrigerant discharge pipe 48. Is diluted by the air inhaled through the air suction pipe 72 before being released
- the concentration of the refrigerant discharged to the atmosphere is set to a value that does not cause a risk of explosion. It can be set to a concentration (eg, 1. Ovol% or less). Further, since the explosion-proof electric motor 70 is used for the vacuum pump 4A and the refrigerant discharged to the atmosphere is diluted by the atmosphere, safety in refrigerant processing can be ensured. Furthermore, since the electric motor is quieter than the air-driven motor, it can reduce noise and use compressed air.
- suction means 75 such as a suction fan
- the surrounding air is sucked into the refrigerant discharge pipe 48 via the air suction pipe 72 by the suction means 75. Since the refrigerant discharged to the atmosphere is diluted by the sucked air, the same effect can be obtained.
- FIG. 13 shows a flammable refrigerant processing apparatus A2 according to the third embodiment of the present invention.
- the exhaust pipe 55 from the air drive motor 6 is used.
- the air intake pipe 72 and the exhaust pipe 76 are connected to the exhaust pipe 55 before and after the open / close valve 74, and the open / close valves 78 and 80 are provided in the air intake pipe 72 and the exhaust pipe 76, respectively. is there.
- the on-off valve 74 is opened and opened and closed.
- the operation is exactly the same as the operation of the combustible refrigerant processing apparatus A according to the first embodiment.
- the compressed air supplied from the compressed air source 54 to the air drive motor 6 via the compressed air supply pipe 52 is discharged from the exhaust pipe 7.
- the refrigerant discharged to the atmosphere through the refrigerant pipe 6 and discharged to the atmosphere through the refrigerant discharge pipe 48 is diluted by the air sucked through the air suction pipe 72.
- the refrigerant discharged to the atmosphere is diluted with the air discharged from the air drive motor 6 discharged to the atmosphere through the exhaust pipe 55 or the air sucked through the air suction pipe 72. And either one of them can be appropriately selected as needed.
- FIG. 14 shows a flammable refrigerant processing apparatus A3 according to the fourth embodiment of the present invention.
- the bottom surface of the oil separation tank 2 is shown.
- An air suction pipe 82 is connected to 2b, the open end of the air suction pipe 82 is extended to the upper surface 2a of the oil separation tank 2, and an open / close valve 84 is provided in the air suction pipe 82.
- the piercing jigs 24 and 26 are connected to the high-pressure side pipe 32 of the compressor 30 and A force that removes from the low pressure side pipe 34 and publishes the refrigerating machine oil in the oil separation tank 2 with the air sucked in through the piercing jigs 24 and 26.
- a flammable refrigerant treatment device A3 In this case, regardless of whether the piercing jigs 24, 26 are attached or detached, the refrigeration oil can be published by the air sucked into the oil separation tank 2 through the air suction pipe 82 by opening the on-off valve 84.
- the publishing of refrigerating machine oil by air is easier to separate the refrigerant than the publishing of refrigerating machine oil by refrigerant.
- the air suction pipe 82 may be connected to the oil recovery pipe 64 connected to the waste oil tank 66 without being connected to the bottom surface 2b of the oil separation tank 2.
- the on-off valve 84 is opened with the on-off valve 62 provided on the oil recovery pipe 64 closed, the refrigerating machine oil in the oil separation tank 2 can be published in the atmosphere while the on-off valve 84 is closed.
- the on-off valve 62 is opened, the refrigerating machine oil stored in the lower part of the oil separation tank 2 can be collected in the waste oil tank 66.
- the waste oil tank 66 without the air suction pipe 82 can be configured to be detachable, and by separating the waste oil tank 66 from the oil recovery pipe 64, the refrigerating machine oil in the oil separation tank 2 can be removed by air. You can publish.
- the open end of the oil recovery pipe 64 needs to be arranged at substantially the same level as the upper surface 2a of the oil separation tank 2.
- the bottom surface 2b of the oil separation tank 2 and the compressed air source 54 are connected via a compressed air supply pipe 86, and an open / close valve 88 is attached to the compressed air supply pipe 86
- the two refrigerant discharge pipes 44, 48 may be connected via the bypass pipe 90.
- an on-off valve 92 is attached to the bypass pipe 90
- an on-off valve 94 is attached to the refrigerant discharge pipe 44.
- the flammable refrigerant processing apparatus and method according to the present invention can safely, reliably, and inexpensively collect and process flammable refrigerant from refrigeration equipment using the flammable refrigerant. It is useful for processing flammable refrigerants when recycling refrigerators or air conditioners.
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Priority Applications (1)
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JP2005518047A JP4854302B2 (ja) | 2004-02-17 | 2005-02-17 | 可燃性冷媒及び冷凍機油処理装置及び処理方法 |
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JP2004040089 | 2004-02-17 | ||
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JP2007127358A (ja) * | 2005-11-07 | 2007-05-24 | Mitsubishi Electric Corp | 可燃性冷媒の回収方法及び可燃性冷媒の回収装置 |
JP2007132586A (ja) * | 2005-11-10 | 2007-05-31 | Mitsubishi Electric Corp | 可燃性冷媒の処理装置 |
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ITPI20110061A1 (it) * | 2011-06-01 | 2012-12-02 | Ecotechnics S P A | Apparecchiatura di recupero, depurazione e ispezione di un fluido refrigerante |
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- 2005-02-17 JP JP2005518047A patent/JP4854302B2/ja not_active Expired - Fee Related
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JP2007127358A (ja) * | 2005-11-07 | 2007-05-24 | Mitsubishi Electric Corp | 可燃性冷媒の回収方法及び可燃性冷媒の回収装置 |
JP4523907B2 (ja) * | 2005-11-07 | 2010-08-11 | 三菱電機株式会社 | 可燃性冷媒の回収方法及び可燃性冷媒の回収装置 |
JP4490362B2 (ja) * | 2005-11-10 | 2010-06-23 | 三菱電機株式会社 | 可燃性冷媒の処理装置 |
JP2007132586A (ja) * | 2005-11-10 | 2007-05-31 | Mitsubishi Electric Corp | 可燃性冷媒の処理装置 |
JP4699196B2 (ja) * | 2005-12-20 | 2011-06-08 | パナソニック株式会社 | 可燃性冷媒処理装置 |
JP2007170707A (ja) * | 2005-12-20 | 2007-07-05 | Matsushita Electric Ind Co Ltd | 可燃性冷媒処理装置 |
JP2007212056A (ja) * | 2006-02-10 | 2007-08-23 | Mitsubishi Electric Corp | 圧縮機の処理方法 |
JP4528267B2 (ja) * | 2006-02-10 | 2010-08-18 | 三菱電機株式会社 | 圧縮機の処理方法 |
JP2008064371A (ja) * | 2006-09-07 | 2008-03-21 | Mitsubishi Electric Corp | 冷媒回収装置 |
JP2008121915A (ja) * | 2006-11-08 | 2008-05-29 | Nakajima Jidosha Denso:Kk | 冷媒回収方法、回収装置及び穿孔器具 |
JP2008175495A (ja) * | 2007-01-22 | 2008-07-31 | Mitsubishi Electric Corp | 冷凍機油の回収方法及び冷凍機油の回収装置 |
JP4616285B2 (ja) * | 2007-01-22 | 2011-01-19 | 三菱電機株式会社 | 冷凍機油の回収方法及び冷凍機油の回収装置 |
JP2010243136A (ja) * | 2009-04-10 | 2010-10-28 | Mitsubishi Electric Corp | 可燃性冷媒のエアパージ装置およびエアパージ方法 |
ITPI20110061A1 (it) * | 2011-06-01 | 2012-12-02 | Ecotechnics S P A | Apparecchiatura di recupero, depurazione e ispezione di un fluido refrigerante |
WO2012164533A3 (en) * | 2011-06-01 | 2013-11-07 | Ecotechnics S.P.A. | Apparatus and method for regenerating a refrigerant of a/c systems and for checking the lubricant content |
EP2562491A1 (en) * | 2011-08-24 | 2013-02-27 | Robert Bosch GmbH | Filling system for transferring refrigerant to a refrigeration system and method of operating a filling system |
US8955342B2 (en) | 2011-08-24 | 2015-02-17 | Mahle Clevite Inc. | Refrigeration system and method of operating a refrigeration system |
Also Published As
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JPWO2005078364A1 (ja) | 2007-08-02 |
TW200535388A (en) | 2005-11-01 |
TWI334918B (en) | 2010-12-21 |
JP4854302B2 (ja) | 2012-01-18 |
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