Title:
FLUID COMPRESSOR
Document Type and Number:
Japanese Patent JP3110079
Kind Code:
B2
Abstract:
PURPOSE: To enhance compression efficiency with useless input reduced by making both the axial end sections of a rotor identical in diameter to each other, providing guiding grooves for fluid for both the end faces of the rotor in such a way that the identical pressure of suction or discharge can be applied, and thereby balancing thrust to which the rotor is subjected.
CONSTITUTION: Lower pressure refregirant gas is discharged in a cylinder 5 out of the circumferential surface of the intermediate section in the axial direction of the rotor piston 11 at one opening section of a suction port concurrently acting as a guide path 14A. Meanwhile, low pressure refregirant gas is introduced into a pivotally supporting port 9a out of the end face of an axial section 11b at the auxiliary bearing 9 pivotally supporting side of the other opening section of the guide path 14A. A piston 11 is thereby subjected to the suction pressure of refregirant gas introduced out of the suction tube 13 at the end face of the axial section 11a, and the end face of the axial section 11b is subjected to the suction pressure of refregirant gas introduced from the guide path 14A. Thus, the end faces of the axial sections 11a and 11b of the piston 11 are subjected to identical suction pressure, thrust to which the piston 11 is subjected, becomes zero because the diameter &phiv D1 is equal to the diameter &phiv D2. This constitution thereby allows a friction loosing body generated at the piston 11 and the thrust surface of a main bearing 7 to be eliminated, so that useless input is therefore reduced.
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Inventors:
Naoyoshi Fujiwara
Application Number:
JP15134391A
Publication Date:
November 20, 2000
Filing Date:
June 24, 1991
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F04B27/06; F04C18/107; F04C18/344; (IPC1-7): F04C18/344
Domestic Patent References:
| JP2201077A | ||||
| JP396689A | ||||
| JP388994A | ||||
| JP333487A | ||||
| JP2201096A | ||||
| JP2201079A | ||||
| JP219684A |
Attorney, Agent or Firm:
Takehiko Suzue