Claims
- 1. A refrigerant recovery and purification system comprising:
- a refrigerant compressor;
- means including evaporator means for connecting said compressor to a container from which a refrigerant is to be recovered;
- condenser means in fluid communication with said compressor and in heat exchange relation to said evaporator means;
- refrigerant storage means;
- means for feeding liquid refrigerant from said condenser means to said refrigerant storage means;
- filter means for removing contaminants from refrigerant passing therethrough; and
- means for selectively circulating refrigerant in a closed path from said refrigerant storage means through said filter means and back to said refrigerant storage means.
- 2. The system of claim 1 wherein said selective-circulating means includes said compressor, and means for connecting said compressor to said refrigerant storage means.
- 3. A refrigerant recovery and purification system comprising:
- a refrigerant compressor;
- means including evaporator means for connecting said compressor to a container from which a refrigerant is to be recovered;
- condenser means in fluid communication with said compressor and in heat exchange relation to said evaporator means;
- refrigerant storage means;
- means for feeding liquid refrigerant from said condenser means to said refrigerant storage means;
- means for selectively circulating refrigerant in a closed path from said refrigerant storage means through said compressor and back to said refrigerant storage means.
- 4. A refrigerant recovery and purification system comprising:
- a compressor;
- means for connecting said compressor to a container from which a refrigerant is to be recovered;
- refrigerant holding means in fluid communication with said compressor; and
- means for selectively circulating substantially all of said refrigerant in a closed path from said refrigerant holding means through said compressor and back to said refrigerant holding means.
- 5. A refrigerant recovery and purification system comprising:
- a refrigerant compressor having an input and an output;
- means including evaporator means for connecting said compressor input to a refrigeration system from which refrigerant is to be recovered;
- condenser means coupled to said compressor output in heat exchange relation to said evaporator means;
- refrigerant storage means having first and second ports;
- means for feeding liquid refrigerant from said condenser means to said first port;
- and means for selectively circulating refrigerant in a closed path from said second port through said compressor to said first port.
- 6. A refrigerant recovery and purification system comprising:
- a refrigerant compressor;
- an evaporator connecting said compressor to a container from which a refrigerant is to be recovered;
- a condenser in fluid communication with said compressor and in heat exchange relation to said evaporator;
- a refrigerant storage chamber;
- means for feeding liquid refrigerant from said condenser to said refrigerant storage chamber;
- a filter; and
- means for selectively circulating refrigerant in a closed path from said refrigerant storage chamber through said filter and back to said refrigerant storage chamber.
- 7. The system of claim 6 wherein said selective-circulating means includes said compressor, and means for connecting said compressor to said refrigerant storage chamber.
- 8. A refrigerant recovery and purification system comprising:
- a refrigerant compressor;
- means including an evaporator for connecting said compressor to a container from which a refrigerant is to be recovered;
- a condenser in fluid communication with said compressor and in heat exchange relation to said evaporator;
- a refrigerant storage chamber;
- means for feeding liquid refrigerant from said condenser to said refrigerant storage chamber;
- means for selectively circulating refrigerant in a closed path from said refrigerant storage chamber through said compressor and back to said refrigerant storage chamber.
- 9. A refrigerant recovery and purification system comprising:
- a compressor;
- a conduit for connecting said compressor to a container from which a refrigerant is to be recovered;
- a refrigerant storage chamber in fluid communication with said compressor; and
- means for selectively circulating .substantially all of said refrigerant in a closed path from said refrigerant storage chamber through said compressor and back to said refrigerant storage chamber.
- 10. A refrigerant recovery and purification system comprising:
- a refrigerant compressor having an input and an output;
- means including an evaporator for connecting said compressor input to a refrigeration system from which refrigerant is to be recovered;
- a condenser coupled to said compressor output in heat exchange relation to said evaporator;
- a refrigerant storage chamber having first and second ports;
- means for feeding liquid refrigerant from said condenser to said first port;
- and means for selectively circulating refrigerant in a closed path from said second port through said compressor to said first port.
Parent Case Info
This is a continuation of copending application Ser. No. 07/332,235 filed on Mar. 31, 1989 now U.S. Pat. No. 5,195,333 which is in turn a continuation of application Ser. No. 07/109,958 filed on Oct. 19, 1987 now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4476688 |
Goddard |
Oct 1984 |
|
5195333 |
Van Steenburgh |
Mar 1993 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
209511 |
May 1984 |
DEX |
Continuations (2)
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Number |
Date |
Country |
Parent |
332235 |
Mar 1989 |
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Parent |
109958 |
Oct 1987 |
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