Variable speed oil-injected screw compressors

Details Variable speed oil-injected screw compressors Variable speed oil-injected screw compressors

2006-06-13

2006-06-13

Kim, Tae Jun (Department: 3746)

Pumps

Diverse pumps

Including rotary nonexpansible chamber type

C417S228000, C184S006160, C184S006220

Reexamination Certificate

active

07059837

ABSTRACT:
The invention relates to the use of variable speed control of the cooling fan on a variable speed oil-injected screw compressor. A screw compressor (11) comprises at least one stage of compression, each with a pair of rotors, variable speed compressor drive means (12), an oil reclaimer (13) from the compressed air and cooling apparatus (17) for cooling the oil extracted from the compressed air. The cooling apparatus comprises a heat exchange device and a fan (18) driven by a motor (19) which can be run at different speeds.

REFERENCES:
patent: 4063855 (1977-12-01), Paul
patent: 4526523 (1985-07-01), Parker
patent: 5310020 (1994-05-01), Martin et al.
patent: 5522233 (1996-06-01), Nares et al.
patent: 5927088 (1999-07-01), Shaw
patent: 6077052 (2000-06-01), Gunn et al.
patent: 090203385 (1997-08-01), None
patent: 100184571 (1998-07-01), None
patent: 110037053 (1999-02-01), None

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