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Patent Searching and Data


Title:
GAS COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/179789
Kind Code:
A1
Abstract:
The purpose of the present invention is to reliably prevent generation of drain without depending on a difference in ambient temperature at which a compressor is installed. This gas compressor is provided with: a compressor body compressing a gas; a driving source driving said compressor body; a control unit controlling the rotation speed of the driving source according to the discharge pressure of the compressor body; and a temperature detecting device detecting the temperature of the discharge gas of the compressor body, wherein, when the discharge pressure reaches the upper limit pressure higher than the set pressure, the gas compressor executes a no-load operation in which the rotation speed of the driving source is set as the lower limit rotation speed. When the temperature detected by the temperature detecting unit is detected to be less than or equal to a predetermined temperature during the no-load operation, the control unit performs a control such that the lower limit rotation speed of the driving source is set to be higher than the lower limit rotation speed when the detected temperature is higher than the predetermined temperature, and set to the lower limit rotation speed when the temperature of the discharge gas is higher than the predetermined temperature.

Inventors:
OSHIRO RYUSUKE (JP)
Application Number:
JP2018/002844
Publication Date:
October 04, 2018
Filing Date:
January 30, 2018
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C28/06; F04B49/06; F04C18/16; F04C28/08; F04C29/04
Foreign References:
JP2008144703A2008-06-26
JPH0443893A1992-02-13
JPS5797088A1982-06-16
JP2005069100A2005-03-17
Other References:
See also references of EP 3604819A4
Attorney, Agent or Firm:
TODA Yuji (JP)
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