The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2021
Filed:
Oct. 04, 2017
Applicant:
Ingersoll-rand Industrial U.s., Inc., Davidson, NC (US);
Inventors:
Daniel R. Crum, Huntersville, NC (US);
Ryan Patrick Coleman, Huntersville, NC (US);
Nobin Cherian, Karnataka, IN;
Assignee:
INGERSOLL-RAND INDUSTRIAL U.S., INC., Davidson, NC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04C 29/02 (2006.01); F04C 18/16 (2006.01); F04C 29/00 (2006.01);
U.S. Cl.
CPC ...
F04C 29/02 (2013.01); F04C 18/16 (2013.01); F04C 29/0007 (2013.01); F04C 2210/221 (2013.01); F04C 2240/20 (2013.01); F04C 2240/30 (2013.01);
Abstract
The present disclosure is directed to a screw compressor system having a compressor housing with a pair of screw rotors rotatably supported within a compression chamber. Lubricant is injected into a compression chamber at a first volume ratio and at a second volume ratio greater than the first volume ratio to increase the sealing and lubrication between the screw rotors and rotor bores in the compressor housing as well as to increase heat transfer from a compressed working fluid in the compression chamber.