Variable volume screw compressors using proportional valve control

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9664418
APP PUB NO 20140260414A1
SERIAL NO

14197395

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Abstract

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A variable-efficiency screw compressor for use in a closed-loop system configured to perform refrigeration is provided. The variable-efficiency screw compressor includes an inlet port to draw refrigerant into the variable-efficiency screw compressor, one or more rotating screws in fluid communication with the inlet port to compress the refrigerant, forming a compressed refrigerant, a discharge port in fluid communication with the rotating screws to receive the compressed refrigerant and discharge the refrigerant, wherein the discharge port includes an adjustable piston movable within the discharge port from a first position in which volume is higher to a second position in which volume is lower, the adjustable piston arranged and disposed to adjust volume of the discharge port in response to a change in demand.

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Patent Owner(s)

Patent OwnerAddress
JOHNSON CONTROLS TYCO IP HOLDINGS LLP5757 N GREEN BAY AVENUE MILWAUKEE WI 53209

International Classification(s)

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  • 2014 Application Filing Year
  • F25B Class
  • 1044 Applications Filed
  • 850 Patents Issued To-Date
  • 81.42 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nemit,, Jr Paul Greencastle, US 21 127

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Patent Citation Ranking

  • 2 Citation Count
  • F25B Class
  • 21.93 % this patent is cited more than
  • 8 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges14345344821101 - 1011 - 2021 - 3031 - 4041 - 5071 - 800255075100125150175200225250275300325350375400425450475500

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