US2001004446A1PendingUtilityA1

Temperature control systems for vacuum pumps

37
Priority: Dec 17, 1999Filed: Dec 6, 2000Published: Jun 21, 2001
Est. expiryDec 17, 2019(expired)· nominal 20-yr term from priority
Inventors:Nigel Paul Schofield
F04C 28/28G01K 7/42
37
PatentIndex Score
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Claims

Abstract

A temperature control system for a vacuum pump comprising means through which can flow a temperature control fluid, and a thermal resistor located between said means and a surface of the vacuum pump whose temperature is to be controlled.

Claims

exact text as granted — not AI-modified
I claim:  
     
         1 . A temperature control system for a vacuum pump comprising means through which can flow a temperature control fluid, and a thermal resistor located between said means and a surface of the vacuum pump whose temperature is to be controlled.  
     
     
         2 . The temperature control system as claimed in    claim 1   , in which the means is a cooling plate and the temperature control fluid is water.  
     
     
         3 . The temperature control system as claimed in    claim 1   , in which the thermal resistor is sheet of rubber.  
     
     
         4 . The temperature control system as claimed in    claim 1    in which the thermal resistor is a narrow air gap.  
     
     
         5 . The temperature control system as claimed in    claim 1    wherein said vacuum pump is a vacuum screw pump.  
     
     
         6 . The temperature control system as claimed in    claim 1    wherein said vacuum screw pump is operating at a temperature of 100° to 130° C.  
     
     
         7 . The temperature control system as claimed in    claim 1    wherein scale is inhibited from build up in said means.  
     
     
         8 . The temperature control system as claimed in    claim 1    wherein the temperature of said temperature control flow does not reach boiling.

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