JPH074832A - Chlorofluorocarbons collection method and device therefor - Google Patents

Abstract

PURPOSE:To avoid negative pressure suction and prevent the shortage of a lubricant for a compressor and enhance reduction in collection time when collecting chlorofluorocarbons housed in a vessel. CONSTITUTION:A housing bag 1a in which chlorofluorocarbons are housed in an atmospheric pressure state or a pressurized state or a refrigerator 1b or the like is connected to a collection machine 2 having compressor 5 with a connection pipeline 3. A booster pump 4 is interposed on the way of the connection pipeline. The booster pump 4 is used to suck up the chlorofluorocarbons from the housing bag or the refrigerator or the like. What is more, the sucked up chlorofluorocarbons are supplied to the compressor in a pressurized state higher than the internal pressure of the housing bag or the like. The chlorofluorocarbons, after compressed and liquefied in a condenser 6, are stored in a storage gas cylinder 7. The housing bag is formed with a deformable raw material which makes it possible to expand and reduce the size of the housing bag in conformity with the internal pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for recovering CFC used for recovering CFC contained as a refrigerant in refrigerators and freezers for home or business use, or air conditioners of automobiles. Regarding

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, there is known a CFC recovery method and device of this type.
That is, the recovery device indicated by a is basically composed of a compressor b, a condenser c, and a storage cylinder d, and a container e containing a CFC to be recovered is connected to the compressor b, and the compression is performed. CFCs sucked and compressed by the machine b and liquefied by the condenser c are stored in the storage cylinder d. In this case, when the container e is a refrigerator or the like, the container e is filled with chlorofluorocarbon in a pressurized state, so that the internal pressure is used to lead it to the compressor b outside the machine. Has become.

[0003]

However, in the case of the above-mentioned conventional CFC recovery method and apparatus, FIG. 5 shows 30 × 10 ⁴
As shown in the relationship between the recovery unit inlet side pressure and the recovery rate when recovering from a container containing CFC with an internal pressure of a little Pa, the CFC internal pressure of the container acts on the recovery unit inlet side at the beginning of recovery. Although efficient recovery is possible, the CFC internal pressure of the container e decreases as the recovery rate increases, and when the recovery rate is 50%, the CFC internal pressure becomes the atmospheric pressure state. There is no choice but to suck (negative pressure suction) in a negative pressure state lower than atmospheric pressure. in this case,
Generally, a fully closed type is used as the compressor b, and when the negative pressure suction is performed by the fully closed type compressor b, the inside of the compressor b becomes a negative pressure state, and the lubricating oil inside the compressor is Will be sucked together with Freon. This lubricating oil is collected and circulated by an oil separator (not shown) arranged on the downstream side of the compressor b, so that not all the lubricating oil is collected. Lubricating oil may run out and seizure may occur. Moreover, since a negative pressure is sucked by the compressor b, it takes a relatively long time to collect a small amount of CFCs. For example, FIG. 6 shows the relationship between the pressure on the inlet side of the recovery machine and the time (recovery elapsed time) when recovering a relatively small amount of CFC stored in the container at an internal pressure of a little less than 30 × 10 ⁴ Pa as described above. As shown in the figure, although it is possible to recover in a relatively short time of 40 seconds until the inlet of the recovery machine is lowered from the internal pressure of the container to the atmospheric pressure state, at this stage, the recovery rate of 50% is achieved as described above. Yes, and collect the remaining 50% of CFC by negative pressure suction to recover 100%.
It takes 3 to 4 minutes to raise it to near%.

On the other hand, since the above-mentioned CFC recovery device has a built-in compressor b and the like, it is considerably heavy. In the above CFC recovery method, it is necessary to transport the heavy CFC recovery device to the vicinity of a refrigerator or the like each time. Therefore, it is considered to use a CFC accommodating bag formed of an elastic material such as a synthetic resin so that the recovery device is fixed and fixed and the transportation is omitted. That is, first, the CFCs are stored in the CFC storage bag by releasing the CFCs from the refrigerator due to the pressure difference based on the internal pressure of the CFC storage bag, and then the CFC storage bag is transported to the CFC recovery device installation location for recovery. It is considered to do the work.

However, when using this fluorocarbon bag,
The CFC accommodated in the CFC accommodating bag is at atmospheric pressure or in a pressure state close to atmospheric pressure, so that the compressor b is forced to suck the negative pressure from the initial stage of startup. For this reason, the possibility of seizure due to running out of the lubricating oil is further increased, and a long recovery time is required to recover a small amount of CFCs. In this case, for example, as shown in FIG. 7, the recovery elapsed time required when negatively sucking 200 g of CFC under atmospheric pressure in the CFC storage bag is shown as about 8 minutes and the recovery time required for the amount of CFC collected. As it takes a very long time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and apparatus for recovering CFCs contained in a container, avoiding negative pressure suction and compressing. The purpose of this is to reliably prevent the occurrence of running out of lubricating oil in the machine and to recover the CFCs in a relatively short time.

[0007]

In order to achieve the above object, the invention according to claim 1 is to store the flon from a container accommodating the flon by sucking and compressing the flon with a compressor. How to do. In this structure, the freon is pressurized so as to be higher than the internal pressure of the container before suction and compression of the freon.

According to a second aspect of the present invention, in the first aspect of the invention, when the CFC is accommodated in the container under atmospheric pressure, before the CFC is sucked and compressed by the compressor,
The CFC is pressurized above atmospheric pressure.

According to a third aspect of the present invention, in the first aspect of the invention, when the CFC is stored in a container under a pressure higher than the atmospheric pressure, the CFC is sucked by a compressor,
Prior to compression, the CFC is pressurized above the pressure in the container.

Further, the invention according to claim 4 is the invention according to claims 1 to 1.
As a CFC recovery device for carrying out the CFC recovery method according to any one of 3), the CFC is recovered from a container in which CFC is accommodated, and a device main body having a compressor, and this device main body. A connecting pipe for connecting the container to each other, one end of the connecting pipe is connected to the inlet side of the compressor, and the other end is provided with a connecting portion detachably connected to the container. I assume that. In this, in the midway position of the connection pipe, freon is sucked from the container, and the sucked freon is supplied to the compressor under a pressure higher than atmospheric pressure and higher than the pressure in the container. The pressurizing pump is installed.

Further, the invention according to claim 5 is the same as claim 3
It is used in carrying out the described CFC recovery method. That is, the invention according to claim 5 is the structure according to claim 4, wherein the container is formed in a bag shape from a deformable material so that the volume thereof expands and contracts according to the internal pressure.

[0012]

With the above construction, in the invention according to claim 1,
Before the suction and compression of CFCs, the CFCs are pressurized so as to be higher than the internal pressure of the container, and the CFCs that are pressurized higher than the internal pressure are sucked by the compressor.
The compressor is reliably prevented from being in a negative pressure suction state to avoid running out of lubricating oil, and the recovery time is shortened compared to the case where a part or all of the CFCs in the container is sucked in negative pressure. Is possible.

According to the second aspect of the present invention, in addition to the action of the first aspect of the present invention, when the freon is sucked from the container accommodated in the atmospheric pressure state, the freon is kept from the atmospheric pressure before the suction. Since the pressure is high, it is possible to more reliably prevent the suction by the compressor from becoming a negative pressure suction state, and it is possible to significantly shorten the collection time.

According to the third aspect of the present invention, in addition to the operation according to the first aspect of the present invention, when the freon is sucked from the container housed under pressure, the freon is sucked from the container before the suction. Since the pressure is higher than the internal pressure, even if the internal pressure of the container is lowered by suction by the compressor, the negative pressure of the compressor is more reliably prevented.

Further, in the invention according to claim 4, a pressurizing pump is provided in the middle of the connecting pipeline, and the pressurizing CFC supplied by the pressurizing pump to a pressure higher than the internal pressure of the container is supplied to the compressor. Therefore, the suction side in the compressor is not maintained in the same pressurized state and is in the negative pressure suction state, therefore,
The occurrence of lubricating oil shortage in the compressor is avoided. Moreover, in this case, the compressor is maintained in a good operating condition by being lubricated by Freon in addition to the lubricating oil. Moreover,
Since the suction recovery of CFCs from the container is governed by the capacity of the pressurizing pump, compared to the case where the internal pressure of the container, which does not have this pressurizing pump and is sucked only by the compressor and decreases with the recovery time, It can be shortened.

Further, in the invention described in claim 5, in addition to the function of the invention described in claim 4, the container accommodating the chlorofluorocarbon under atmospheric pressure is formed into a bag shape by a deformable material so that the internal pressure is increased. Since the container is deformed accordingly, the internal pressure is kept almost constant by the container being deflated and deflated by suction by the pressure pump. As a result, compared with the case where the container is not deformed, the internal pressure of the container does not increase and changes to the negative pressure side,
The load on the suction operation of the pressure pump is reduced. Therefore, the recovery time can be further shortened and the operating power can be reduced.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> FIG. 1 shows a CFC recovery apparatus according to a first embodiment of the present invention, in which 1a is a storage bag as a container for storing CFCs, 2 is a recovery machine as an apparatus main body,
Reference numeral 3 is a connecting conduit for connecting the collecting machine 2 and the storage bag 1a, and 4 is a pressurizing pump for pressurizing the connecting conduit 3 in the middle thereof.

The accommodating bag 1a is a bag-shaped container made of a synthetic resin material such as fiber reinforced vinyl, and is designed to be deflated or swelled according to the internal pressure. Freon, which has been filled under pressure as a refrigerant, is transferred to the storage bag 1 from, for example, a refrigerator that is no longer needed or an air conditioner of an automobile that has been scrapped, to atmospheric pressure or atmospheric pressure. It is housed under close pressure. That is, the storage bag 1a should be brought to a storage location such as the refrigerator, and the storage bag 1a should be connected to the refrigerator or the like in a deflated state so as to release pressurized CFCs from the refrigerator or the like into the storage bag 1. By
CFCs are taken out from the refrigerator or the like, and the CFCs are stored in the storage bag 1 at a substantially atmospheric pressure.

The recovery unit 2 includes a compressor 5, a condenser 6 connected to the discharge side (high pressure side) of the compressor 5 for cooling and liquefying the chlorofluorocarbon compressed by the compressor 5. It is provided with a storage cylinder 7 which is connected to the bottom of the vessel 6 and stores liquefied chlorofluorocarbon. The compressor 5 is of the hermetically sealed type. An accumulator 9 is provided in the middle of a low pressure side pipe line 8 that connects the suction side (low pressure side) of the compressor 5 and the inlet 2a of the recovery machine 2, and the accumulator 9 is provided on the low pressure side. When the flon supplied to the compressor 5 through the pipe 8 contains a liquid in a liquid state, it is brought into a vaporized state. Further, an oil separator 11 is interposed in the middle of a high pressure side pipe line 10 connecting the compressor 5 and the condenser 6, and the oil separator 11 discharges lubricating oil from the high pressure side of the compressor 5. In this case, the lubricating oil is separated from the chlorofluorocarbon and recirculates to the low pressure side pipe line 8. Further, a low pressure side pressure switch 12 is provided in the low pressure side pipe line 8 on the inlet side of the compressor 5,
The pressure in the low pressure side conduit 8 is the pressure of the low pressure side pressure switch 1
When the pressure becomes equal to or lower than the set pressure set to 2, the operation of the compressor 5 is temporarily stopped.

The base end of the connecting pipe 3 is connected to the inlet 2a side of the recovering machine 2, and the front end of the connecting pipe 3 is connected to a connector (not shown) having an automatic shutoff valve. The connector is detachably connected to the accommodation bag 1a and communicates with the accommodation bag 1a.

As the booster pump 4, for example, a vacuum pump whose discharge side is not exposed to the atmosphere is used, and its suction side is the connector side of the connection conduit 3 and its discharge side is the above. It is arranged so as to face each of the inlet sides of the recovery machines 2. The booster pump 4 sucks the chlorofluorocarbon in the storage bag 1a and simultaneously pressurizes the chlorofluorocarbon, and supplies the pressurized fluorocarbon to the recovery device 2.

Next, a fluorocarbon recovery method using the fluorocarbon recovery device having the above structure will be described.

First, as described above, the chlorofluorocarbon filled inside is taken out from the refrigerator in each home or the like, and the chlorofluorocarbon is stored in the storage bag 1a at the atmospheric pressure or a pressure close to the atmospheric pressure. Then, the accommodating bag 1a is transported to the installation location of the fluorocarbon recovery device and connected to the connector of the connection conduit 3.

Next, the booster pump 4, the compressor 5, etc. are driven. The CFCs in the storage bag 1a are sucked into the booster pump 4 by the drive of the booster pump 4 and are pressurized to a pressure higher than the atmospheric pressure by the booster pump 4. It is discharged into the connection conduit 3. Then, the CFCs in the pressurized state enter the low pressure side pipe line 8 of the recovery machine 2, pass through the accumulator 9, and are sucked from the low pressure side suction port of the compressor 5. On this occasion,
The inside of the connecting pipe line 3a on the upstream side of the booster pump 4 becomes approximately -1 × 10 ⁴ Pa by suction by the boosting pump 4, whereas the connecting pipe line 3 on the downstream side of the booster pump 4 has a pressure of about -1 × 10 ⁴ Pa.
The pressure in b, that is, the pressure on the inlet side of the recovery machine is increased by the booster pump 4 to be approximately 15 × 10 ⁴ Pa (see FIG. 2).
Becomes The CFCs compressed by the compressor 5 are supplied to the condenser 6 via the oil separator 11, cooled and liquefied by the condenser 6, and the liquefied CFCs are stored in the storage cylinder 7.

In the compressor 5, the chlorofluorocarbon in the accommodation bag 1a at or near the atmospheric pressure is pressurized by the booster pump 4 to a pressure higher than the atmospheric pressure, and the pressurized chlorofluorocarbon is compressed by the compressor 5. Since the suction is performed, it is possible to reliably prevent the compressor 5 from entering the negative pressure suction state, and it is possible to improve the reliability of the operation of the compressor 5. Moreover, since the suction port side of the compressor 5 is kept under a pressure higher than the same atmospheric pressure as that of the pressurized flon, the suction of the lubricating oil that occurs during negative pressure suction is reliably prevented and the compressor is compressed. It is possible to reliably eliminate the risk of seizure of the machine 5, and it is possible to expect a lubricating effect due to the CFCs filling the low pressure side of the compressor 5, and it is possible to maintain a good operating condition.

Further, since the pressure of the CFC in the accommodation bag 1a or the pressure of the pressure close to the atmospheric pressure is first sucked by the booster pump 4 and once pressurized, the compressor 5 is sucked. As compared with a case where the compressor 5 directly sucks CFCs under atmospheric pressure or a pressure state close to the atmospheric pressure without providing 4, the recovery can be performed earlier and the recovery time can be shortened. For example, the boost pump 4
When the pressure is increased to approximately 15 × 10 ⁴ Pa by means of the above, it is possible to recover 200 g of CFCs in the storage bag 1a under atmospheric pressure in less than 3 minutes (see FIG. 2). The time can be greatly shortened from about 8 minutes (see FIG. 7) when not provided.

Further, since the accommodating bag 1a is formed into a bag shape with a deformable material and deforms according to the internal pressure, the accommodating bag 1a is deflated and deflated by suction by the pressurizing pump 4, and the internal pressure is reduced. It is kept almost constant. This allows
As compared with the case where the Freon is not stored in the storage bag 1a but in a rigid container that does not deform, the load on the suction operation of the pressurizing pump 4 can be reduced because the internal pressure of the storage bag 1a does not increase and fluctuate toward the negative pressure side. Therefore, the collection time can be further shortened.

<Second Embodiment> The following second embodiment is shown in FIG.
As shown in FIG. 3, the refrigerator or the refrigerator 1b in which CFC is stored under pressure as a refrigerant is used as a container in which CFC is stored, and the recovery device itself has the same configuration as that of the first embodiment. It is a thing. That is, the second embodiment is different from the first embodiment in that it uses a recovery device similar to that of the first embodiment to directly recover CFCs from the refrigerator 1b. .

A connector (not shown) with an automatic shutoff valve is connected to the front end side of the connecting pipe 3, and the connector is detachably connected to the refrigerator 1a so as to communicate with the CFC accommodating portion. It is supposed to do.

Further, the step-up pump 4 is the refrigerator 1a, etc.
The operation is started from the time when the internal pressure of the CFC inside becomes equal to the pressure on the inlet side of the recovery machine 2, and the CFC is increased in pressure.

Next, the CFC recovery method in the second embodiment will be described.

First, the recovery machine 2 and the booster pump 4 described above.
A recovery device including the above is carried to the installation place of the refrigerator 1b, or the refrigerator 1b is carried to the installation place of the recovery device, and the connecting pipe 3 is connected to the Freon accommodation part of the refrigerator 1b. Connect the connector of.

Next, the recovery machine 2 such as the compressor 5 is driven. In this case, as shown in FIG.
The pressure A in the upstream connecting pipe 3a is approximately 30 × 10 ⁴ Pa, which is almost equal to the internal pressure of the Freon in the refrigerator 1b, while the pressure B in the downstream connecting pipe 3b is the compressor 5. Driving, the pressure becomes approximately 50 × 10 ⁴ Pa, the inlet side pressure B of the collector 2 becomes higher, and the CFC cannot be pushed by the booster pump 4, so the pressure B due to the suction of the collector 5 decreases and The operation of the booster pump 4 is started at the time when the pressure becomes equal to the pressure A (at the time when approximately 15 seconds elapse). The operation of the booster pump 4 causes the refrigerator 1b
When the CFC inside is sucked, this booster pump 4
By the above, the internal pressure of the refrigerator or the like 1b is higher than the internal pressure, and in this pressurized state, the chlorofluorocarbon is sucked into the recovery device 2 through the downstream side connecting conduit 3b. As a result, the refrigerator etc. 1
Freon is rapidly sucked and recovered from b, and the pressure A in the upstream side connecting conduit 3a is rapidly decreased, and the recovery machine inlet side pressure B is increased.
When the pressure drops to atmospheric pressure (when about 60 seconds elapse)
Then, the recovery of almost 100% of CFCs in the refrigerator 1b is completed.

In the case of the recovery method of the second embodiment, when the entire amount of the CFCs is recovered from the refrigerator 1b in which the CFCs are stored under pressure, the compressor 5 sucks negative pressure during the entire recovery period. In addition, it is possible to surely prevent the state from being brought into a state, and the recovery time is set by the conventional recovery method in which the pressure is not boosted by the booster pump 4 by using the conventional recovery device having no booster pump 4 (see FIG. Compared to
It can be greatly shortened.

Moreover, in the case of the recovery method of the second embodiment,
Since it is directly collected from the refrigerator or the like 1b, it is not necessary to once collect it in the storage bag 1a as in the case of the first embodiment.
Labor saving of the recovery work can be achieved as compared with the embodiment.
In particular, it is effective in collecting CFCs in the collection place of discarded refrigerators.

In addition, since the recovery device is provided with the booster pump 4 to avoid the negative pressure suction state of the compressor 5, the risk of seizure is eliminated and reliability is improved as in the first embodiment. It is possible to improve.

The present invention is not limited to the first and second embodiments described above, but includes various modifications. That is, in the first embodiment described above, the accommodating bag 1a which is easily deformable as a container for accommodating the fluorocarbon under atmospheric pressure.
However, the present invention is not limited to this, and for example, a hard container may be used. Even in this case, by interposing the booster pump 4, it is possible to avoid the occurrence of a negative pressure suction state of the compressor 5 and avoid the occurrence of running out of lubricating oil. Further, by increasing the capacity of the booster pump 4, It is possible to shorten the collection time equivalent to that in the embodiment.

[0039]

As described above, according to the chlorofluorocarbon recovery method of the first aspect of the present invention, before the chlorofluorocarbon is sucked and compressed by the compressor, the chlorofluorocarbon is pressurized to be higher than the internal pressure of the container. Therefore, it is possible to suck the CFC that is pressurized higher than the internal pressure with the compressor,
As a result, it is possible to reliably prevent the compressor from entering the negative pressure suction state. For this reason, it is possible to reliably avoid running out of lubricating oil inside the compressor, and compared with the case where a part or all of the freon in the container is sucked under negative pressure.
The collection time can be shortened.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, when the freon is sucked from the container housed in the atmospheric pressure state, the freon is increased before the suction. Since the pressure is higher than the atmospheric pressure, the suction by the compressor can be more reliably prevented from becoming the negative pressure suction state, and the collection time can be significantly shortened.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, when the flon is sucked from the container housed under pressure, the flon is sucked before the suction. Since the pressure is higher than the internal pressure of the container, it is possible to more reliably prevent the compressor from entering the negative pressure suction state even if the internal pressure of the container is reduced by suction by the compressor.

Further, according to the chlorofluorocarbon recovery device of the fourth aspect of the present invention, the pressurizing pump is provided in the middle of the connecting pipe, and the pressurizing pump pressurizes the chlorofluorocarbon to a pressure higher than the chlorofluorocarbon pressure in the container. Since CFCs are supplied to the compressor, it is possible to reliably prevent the suction side in the compressor from being kept in a pressurized state and in a negative pressure suction state. For this reason, it is possible to reliably avoid running out of lubricating oil in the compressor, and it is possible to keep the compressor in a good operating state by performing lubrication with freon in addition to the lubricating oil. Moreover, since the suction and recovery of CFCs from the container is governed by the capacity of the pressurizing pump, the recovery time is shortened as compared with the case where the CFCs without atmospheric pressure are directly sucked by the compressor. be able to. Therefore, the invention described in claim 1 can be easily and surely implemented.

Further, according to the invention described in claim 5, in addition to the effect of the invention described in claim 4, the container can be deformed when the CFC under atmospheric pressure is accommodated in the container. Since the material is formed into a bag shape and is deformed according to the internal pressure, the internal pressure can be kept substantially constant due to the container being deflated and deflated due to suction by the pressure pump. As a result, compared with the case where the container is not deformed, the load on the suction operation of the pressurizing pump can be reduced and the operating power can be reduced because the internal pressure of the container does not increase and fluctuate toward the negative pressure side. Moreover, the collection time can be further shortened.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing first and second embodiments of the present invention.

FIG. 2 is a diagram showing a relationship between the pressure on the inlet side of the recovery machine and the elapsed recovery time in the first embodiment.

FIG. 3 is a diagram showing a relationship between the pressure on the inlet side of the recovery machine and the elapsed recovery time in the second embodiment.

FIG. 4 is a configuration diagram of a conventional recovery device.

FIG. 5 is a relationship diagram between a recovery unit inlet side pressure and a recovery rate when recovering CFCs stored in a pressurized state by a conventional recovery device.

FIG. 6 is a relationship diagram between the pressure on the inlet side of the recovery machine and the elapsed recovery time in the case of FIG.

FIG. 7 is a diagram showing the relationship between the pressure on the inlet side of the recovery device and the recovery elapsed time when recovering CFCs stored in a state of almost atmospheric pressure by a conventional recovery device.

[Explanation of symbols]

 1a Storage bag (container) 1b Refrigerator, etc. (container) 2 Recovery machine (apparatus body) 3 Connection pipeline 4 Booster pump (pressurizing pump) 5 Compressor

Front Page Continuation (72) Inventor Yoshinobu Kitaguchi 2-4-1 Niho, Minami-ku, Hiroshima City, Hiroshima Prefecture Mazda Sangyo Co., Ltd.

Claims (5)

[Claims] 1. A CFC recovery method in which a CFC is sucked and compressed by a compressor from a container in which the CFC is stored, and is liquefied and stored, before the CFC is sucked and compressed by the compressor. A method for recovering CFCs, which comprises pressurizing CFCs to a pressure higher than the internal pressure of the container. 2. The CFC recovery method according to claim 1, wherein CFCs are housed in a container under atmospheric pressure, and the CFCs are pressurized above atmospheric pressure before being sucked and compressed by the compressor. 3. The freon according to claim 1, wherein the freon is housed in a container under a pressure higher than atmospheric pressure, and the freon is applied to a pressure higher than the inner pressure of the container before suction and compression of the freon by the compressor. CFC recovery method by pressing. 4. A method for recovering CFCs from a container containing CFCs, which comprises a device main body having a compressor and a connecting pipe line connecting the device main body and the container to each other. One end of the connecting pipe is connected to the inlet side of the compressor, while the other end is provided with a connecting portion that is detachably connected to the container, at a midway position of the connecting pipe. Is equipped with a pressurizing pump for sucking CFCs from the container and supplying the sucked CFCs to the compressor under a pressure higher than atmospheric pressure and higher than the pressure in the container. CFC recovery device. 5. The CFC recovery device according to claim 4, wherein the container is formed in a bag shape by a deformable material so that the volume of the container expands or contracts according to the internal pressure.