US2005276702A1PendingUtilityA1

Compressor inlet pressure control system

38
Individually held — no corporate assignee on recordPriority: Jun 10, 2004Filed: Jun 10, 2004Published: Dec 15, 2005
Est. expiryJun 10, 2024(expired)· nominal 20-yr term from priority
Inventors:Paul ReisingerHans BurkhardtLarry E. Dienes
F04B 41/06F04D 25/16
38
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

An inlet control device includes a status valve and a reed valve. The status valve is positioned as a function of a status of a state of a compressor. Also, the reed valve delivers a reed output pressure to an inlet of the compressor as a function of a reed input pressure on an input side of the reed valve, the position of the status valve, and a rotational speed of the compressor.

Claims

exact text as granted — not AI-modified
1 . An inlet control device, comprising: 
 a status valve positioned as a finction of a status of a state of a compressor; and    a reed valve for delivering a reed output pressure to an inlet of the compressor as a function of a reed input pressure on an input side of the reed valve, the position of the status valve, and a rotational speed of the compressor.    
   
   
       2 . The inlet control device as set forth in  claim 1 , wherein the status valve includes a piston, which is positioned as a finction of the state of the compressor.  
   
   
       3 . The inlet control device as set forth in  claim 1 , wherein the status valve is positioned to cause substantially all of the reed output pressure to be delivered to the compressor inlet when the compressor is in the loaded state.  
   
   
       4 . The inlet control device as set forth in  claim 3 , wherein the status valve is positioned to cause a portion of the reed output pressure to be exhausted to atmosphere when the compressor is in the unloaded state.  
   
   
       5 . The inlet control device as set forth in  claim 4 , wherein the status valve causes a portion of the reed output pressure to pass to the compressor inlet when the compressor is in the unloaded state for reducing a pressure at the compressor inlet.  
   
   
       6 . The inlet control device as set forth in  claim 4 , further including: 
 a restriction device for bleeding the portion of the reed output pressure to the atmosphere.    
   
   
       7 . The inlet control device as set forth in  claim 1 , wherein the reed valve causes the reed output pressure to decrease as the reed input pressure and the compressor rotational speed increases.  
   
   
       8 . The inlet control device as set forth in  claim 6 , wherein the reed valve causes the reed output pressure to decrease as a mass flow of the reed input pressure increases.  
   
   
       9 . An inlet control device, comprising: 
 a valve positioned as a function of a status of a state of a compressor; and    means for regulating a delivered pressure to a compressor inlet as a function of a mass flow and the position of the valve.    
   
   
       10 . The inlet control device as set forth in  claim 9 , wherein the means for regulating includes: 
 a valve which regulates the delivered pressure as being inversely proportional to the mass flow.    
   
   
       11 . The inlet control device as set forth in  claim 10 , wherein the means for regulating is a reed valve.  
   
   
       12 . The inlet control device as set forth in  claim 9 , wherein: 
 the valve is set to a first position when the compressor is in the load state; and    the valve is set to a second position when the compressor is in the unload state.    
   
   
       13 . The inlet control device as set forth in  claim 12 , wherein the valve regulates substantially all of the delivered pressure to be delivered to the compressor inlet when the valve is in the first position, further including: 
 means for reducing a pressure at the compressor inlet when the valve is set to the second position.    
   
   
       14 . The inlet control device as set forth in  claim 13 , wherein the means for reducing includes: 
 the valve regulating a portion of the delivered pressure to pass to the compressor inlet.    
   
   
       15 . A system for controlling an input pressure to a compressor, the system comprising: 
 an inlet port to the compressor;    an exhaust port;    a valve including a valve input and a valve output; and    a piston, positioned as a finction of a state of the compressor, for controlling fluid communication between the valve output and exhaust port, a pressure at the valve output being delivered to the compressor inlet port as a f unction of a pressure at the valve input the position of the piston.    
   
   
       16 . The system for controlling an input pressure to a compressor as set forth in  claim 15 , further including: 
 a pressure restrictor in the exhaust port for bleeding a portion of the valve output pressure to the atmosphere when the compressor is in the unloaded state.    
   
   
       17 . The system for controlling an input pressure to a compressor as set forth in  claim 16 , wherein the valve causes a portion of the valve output pressure to pass to the compressor inlet when the compressor is in the unloaded state for reducing a pressure at the compressor inlet.  
   
   
       18 . The system for controlling an input pressure to a compressor as set forth in  claim 15 , wherein: 
 the piston is positioned to create free fluid communication between the valve output and the compressor inlet port when the compressor is in the loaded state; and    the piston is positioned to create substantially restricted fluid communication between the valve output and the exhaust port when the compressor is in the loaded state.    
   
   
       19 . The system for controlling an input pressure to a compressor as set forth in  claim 15 , wherein the valve is a reed valve.  
   
   
       20 . The system for controlling an input pressure to a compressor as set forth in  claim 15 , wherein the valve causes the valve output pressure to decrease as a mass flow of the valve input pressure increases.  
   
   
       21 . A compressor, comprising: 
 a compressor inlet port;    a compressor exhaust port;    a status valve set to one of a loaded operating position and an unloaded operating position;    a control valve including an inlet port and an outlet port, the control valve outlet port fluidly communicating with the compressor inlet port and the exhaust port as a finction of the position of the status valve.    
   
   
       22 . The compressor as set forth in  claim 21 , wherein: 
 the compressor inlet port fluidly communicates with the control valve outlet port when the status valve is set to the loaded operating position; and    the compressor inlet port does not fluidly communicate with the compressor exhaust port when the status valve is set to the loaded operating position.    
   
   
       23 . The compressor as set forth in  claim 22 , wherein: 
 the fluid communication between the compressor inlet port and the control valve outlet port is substantially restricted when the status valve is set to the unloaded operating position; and    the compressor inlet port fluidly communicates with the compressor exhaust port when the status valve is set to the unloaded operating position.    
   
   
       24 . The compressor as set forth in  claim 21 , wherein the control valve causes a pressure at the control valve outlet port to decrease as a pressure at the control valve inlet port increases.  
   
   
       25 . The compressor as set forth in  claim 21 , wherein the control valve is a reed valve.  
   
   
       26 . A method controlling a delivered pressure to a compressor inlet, the method including: 
 positioning a valve as a function of a state of the compressor; and    regulating the delivered pressure to the compressor inlet as a function of an input pressure and the position of the valve.    
   
   
       27 . The method for controlling a delivered pressure to a compressor inlet as set forth in  claim 26 , wherein the positioning includes: 
 positioning the valve to create unrestricted fluid communication of the inlet pressure to the compressor inlet when the compressor is in the loaded state.    
   
   
       28 . The method for controlling a delivered pressure to a compressor inlet as set forth in  claim 27 , wherein, when the compressor is in the unloaded state, the positioning further includes: 
 positioning the valve to create restricted fluid communication of the inlet pressure to the compressor inlet; and    positioning the valve to vent the inlet pressure.    
   
   
       29 . The method for controlling a delivered pressure to a compressor inlet as set forth in  claim 26 , Wherein the positioning includes: 
 reducing an orifice through which the delivered pressure passes to the compressor inlet when the compressor is in the unloaded state.    
   
   
       30 . The method for controlling a delivered pressure to a compressor inlet as set forth in  claim 26 , wherein the regulating includes: 
 decreasing the delivered pressure as the input pressure increases.

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