Title:
LIQUID SUPPLY TYPE SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2023/112424
Kind Code:
A1
Abstract:
Provided is a liquid supply type screw compressor capable of saving energy by reducing the shaft power required for stirring liquid. The liquid supply type screw compressor has: a male rotor side bore 22A in which a teeth part 13A of a male rotor 11A is housed; a female rotor side bore 22B in which a teeth part 13B of a female rotor 11B is housed; a low pressure side cusp 23 and a high pressure side cusp 24 that are boundaries between a wall surface of the male rotor side bore 22A and a wall surface of the female rotor side bore 22B; and a pocket 29 located adjacent to the low pressure side cusp 23 in the rotor axial direction, and formed to be depressed outward in the rotor radial direction relative to the wall surface of the male rotor side bore 22A and the wall surface of the female rotor side bore 22B. The pocket 29 is formed by inclined surfaces 30A, 30B. The inclined surface 30A extends from the wall surface of the male rotor side bore 22A beyond a virtual plane C1 including the low pressure side cusp 23 and the high pressure side cusp 24.
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Inventors:
CHIBA KOTARO (JP)
YORIKANE SHIGEYUKI (JP)
MORITA KENJI (JP)
KAJIE YUTA (JP)
YORIKANE SHIGEYUKI (JP)
MORITA KENJI (JP)
KAJIE YUTA (JP)
Application Number:
PCT/JP2022/036623
Publication Date:
June 22, 2023
Filing Date:
September 30, 2022
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04C18/16
Foreign References:
| JP2003307190A | 2003-10-31 | |||
| JP2014214677A | 2014-11-17 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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