Title:
LIQUID SUPPLY TYPE SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2021/171889
Kind Code:
A1
Abstract:
Provided is a liquid supply type screw compressor capable of suppressing a temperature rise of a liquid while suppressing a liquid stirring work. The liquid supply type screw compressor has a male rotor 11A and a female rotor 11B, a male rotor-side operating chamber formed in a tooth groove of the male rotor 11A, and a female rotor-side operating chamber formed in a tooth groove of the female rotor 11B. The liquid supply type screw compressor also has a liquid supply nozzle 28 that is disposed on one side in the rotor axial direction, which is a low-pressure side, with respect to an intersection P where a ridge line L of the trailing tooth tip of the female rotor 11B that partitions a female rotor-side operating chamber V5 immediately after the start of discharge and a high-pressure-side cusp 23 intersect, and that supplies liquid to the male rotor-side operating chamber, and a liquid supply nozzle 29 that is disposed on the other side in the rotor axial direction, which is a high-pressure side, with respect to the intersection P and supplies the liquid to the male rotor-side operating chamber, and the compressor is configured so that the liquid supply amount of the liquid supply nozzle 29 is larger than the liquid supply amount of the liquid supply nozzle 28.
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Inventors:
CHIBA KOTARO (JP)
YORIKANE SHIGEYUKI (JP)
TAKANO MASAHIKO (JP)
MORITA KENJI (JP)
YORIKANE SHIGEYUKI (JP)
TAKANO MASAHIKO (JP)
MORITA KENJI (JP)
Application Number:
PCT/JP2021/002980
Publication Date:
September 02, 2021
Filing Date:
January 28, 2021
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C18/16; F04C29/02; F04C29/04
Domestic Patent References:
| WO2018173362A1 | 2018-09-27 | |||
| WO2019093109A1 | 2019-05-16 |
Foreign References:
| US20130058822A1 | 2013-03-07 | |||
| JPH09303279A | 1997-11-25 | |||
| JP2018021494A | 2018-02-08 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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