US2013047635A1PendingUtilityA1

Starting method for a refrigerant recovery, recycling and recharging system

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Individually held — no corporate assignee on recordPriority: Aug 31, 2011Filed: Aug 31, 2011Published: Feb 28, 2013
Est. expiryAug 31, 2031(~5.1 yrs left)· nominal 20-yr term from priority
Inventors:Eric I. ShultzMichael J. GlatfelterParis K. Gesese
F25B 45/00F25B 2345/003
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PatentIndex Score
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Cited by
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References
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Claims

Abstract

A method is provided for operating a refrigerant recovery, recycling and recharging system having a compressor to recover, recycle, and/or recharge the refrigerant in a closed refrigeration circuit coupled to the system. The method includes compressing refrigerant with the compressor, stopping the compressor, re-starting the compressor, and relieving a pressure differential across the compressor at the time of re-starting the compressor.

Claims

exact text as granted — not AI-modified
1 . A method of operating a refrigerant recovery, recycling and recharging system having a compressor to at least one of recover, recycle, and recharge the refrigerant in a closed refrigeration circuit coupled to the system, the method comprising:
 compressing refrigerant with the compressor;   stopping the compressor;   re-starting the compressor; and   relieving a pressure differential across the compressor at the time of re-starting the compressor.   
     
     
         2 . The method of  claim 1 , wherein the pressure differential is relieved by opening a valve to fluidly couple an inlet of the compressor with an outlet of the compressor along a fluid path around the compressor. 
     
     
         3 . The method of  claim 2 , wherein the valve is opened for a period of time prior to re-starting the compressor. 
     
     
         4 . The method of  claim 3 , wherein the valve remains open while the compressor is started. 
     
     
         5 . The method of  claim 4 , wherein the valve remains open for a period of time after the compressor is re-started. 
     
     
         6 . The method of  claim 3 , wherein the period of time prior to re-starting the compressor is 5 seconds. 
     
     
         7 . The method of  claim 6 , wherein the valve remains open while the compressor is started. 
     
     
         8 . The method of  claim 7 , wherein the valve remains open for a period of time after the compressor is re-started. 
     
     
         9 . The method of  claim 8 , wherein the period of time after the compressor is re-started is 5 seconds. 
     
     
         10 . The method of  claim 5 , wherein the period of time after the compressor is re-started is 5 seconds. 
     
     
         11 . The method of  claim 2 , wherein the valve is actuable by a controller to move between open and closed positions, and the valve is opened upon the controller receiving a compressor re-start command. 
     
     
         12 . A method of operating a refrigerant recovery, recycling and recharging system having a compressor to at least one of recover, recycle, and recharge the refrigerant in a closed refrigeration circuit coupled to the system, the method comprising:
 compressing refrigerant with the compressor;   stopping the compressor;   re-starting the compressor; and   opening a valve coupling an inlet and an outlet of the compressor along a fluid path around the compressor, thereby reducing a pressure differential across the compressor at the time of re-starting the compressor.   
     
     
         13 . The method of  claim 12 , wherein the valve is opened for a period of time prior to re-starting the compressor. 
     
     
         14 . The method of  claim 13 , wherein the valve remains open while the compressor is started. 
     
     
         15 . The method of  claim 14 , wherein the valve remains open for a period of time after the compressor is re-started. 
     
     
         16 . The method of  claim 13 , wherein the period of time prior to re-starting the compressor is 5 seconds. 
     
     
         17 . The method of  claim 16 , wherein the valve remains open while the compressor is started. 
     
     
         18 . The method of  claim 17 , wherein the valve remains open for a period of time after the compressor is re-started. 
     
     
         19 . The method of  claim 18 , wherein the period of time after the compressor is re-started is 5 seconds. 
     
     
         20 . The method of  claim 15 , wherein the period of time after the compressor is re-started is 5 seconds. 
     
     
         21 . The method of  claim 12 , wherein the valve is actuable by a controller to move between open and closed positions, and the valve is opened upon the controller receiving a compressor re-start command.

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