Rotary expansible chamber devices – Multistage – Interengaging rotary members
Patent
1977-07-15
1979-11-13
Croyle, Carlton R.
Rotary expansible chamber devices
Multistage
Interengaging rotary members
418 85, 418 86, 418 99, 418181, F04C 2300, F04C 2902, F04C 2904, F04C 2906
Patent
active
041741960
ABSTRACT:
Screw fluid machines are for use as a compressor for generating high pressure gas, a cooling-medium-compressing compressor for use in a refrigerator or an air conditioner. The fluid machine includes a rotor casing, two side-casings, a pair of screw rotors, and accessories such as silencer, a gas cooler, an oil cooler, and an oil tank. The rotor casing includes an outer wall, an inner wall and interconnecting members or ribs which interconnect the outer wall and the inner wall, with a space being provided between the outer wall and the inner wall. This space is partitioned into two or more spaces by means of the aforesaid interconnecting members. A working chamber or space is provided inwardly of the inner wall and has an inlet port and a discharge port. Both side-casings are secured to the opposite end faces of a rotor casing through the medium of flanges and are provided with a passage adapted to bring two or more spaces thus partitioned, into communication with each other. A pair of rotors are housed in meshing relation in a working chamber in the rotor casing. In addition, accessories are housed in spaces thus partitioned.
REFERENCES:
patent: 1443764 (1923-01-01), Smith
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patent: 2755990 (1956-07-01), Nilsson et al.
patent: 3134537 (1964-05-01), Bentele et al.
patent: 3360193 (1967-12-01), Harris et al.
patent: 3820923 (1974-06-01), Zweifel
Arai Akira
Arai Hajime
Matsubara Katsumi
Mishina Haruo
Mori Hidetomo
Croyle Carlton R.
Hitachi , Ltd.
Smith Leonard E.
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