Variable volume screw compressors using proportional valve control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 30, 2017
Grant Date -
Sep 18, 2014
app pub date -
Mar 5, 2014
filing date -
Mar 14, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
CN | B | CN104047853 | Mar 11, 2014 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
GRANTED PATENT FOR INVENTION | Stepless variable volume ratio in the screw compressor of use ratio valve control | Mar 27, 2018 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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JOHNSON CONTROLS TYCO IP HOLDINGS LLP | 5757 N GREEN BAY AVENUE MILWAUKEE WI 53209 |
International Classification(s)

- 2014 Application Filing Year
- F25B Class
- 1044 Applications Filed
- 850 Patents Issued To-Date
- 81.42 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Nemit,, Jr Paul | Greencastle, US | 21 | 127 |
# of filed Patents : 21 Total Citations : 127 |
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Patent Citation Ranking
- 2 Citation Count
- F25B Class
- 21.93 % this patent is cited more than
- 8 Age
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 30, 2024 |
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