Rotary expansible chamber devices – With signal – indicator or transparent inspection means
Patent
1989-10-04
1991-01-08
Vrablik, John J.
Rotary expansible chamber devices
With signal, indicator or transparent inspection means
418 84, 418 85, 418 87, 418 94, F04C 2902, F04C 2904
Patent
active
049831062
ABSTRACT:
The machine comprises first and second screw rotors (1, 2) supported by bearings (47) in a stator casing (3) which is provided with a suction inlet and a delivery outlet, the first rotor is driven by a motor (10) and the second rotor is driven by means of synchronizing gearing (11-12) situated in a first chamber (14) of the casing and located between the motor (10) and one of the ends of the rotors, the gearing (11-12) running in a lubricating fluid (15), the machine is characterized in that the cavity (30) of the casing containing the rotors (1-2) is separated from the first chamber (14) by a first wall (16) having the shafts (8, 13) of the rotors passing therethrough via seals (17-18), in that the shafts of the rotors at the opposite ends of the rotors to the ends having the gearing pass through a second wall (20) via seals (24-25), and in that the casing (3 ) includes, beyond the second wall (20), a second chamber (31) connected to the first chamber (14) by a main pipe (29) provided with pumping means (49), the rotors and the stator-casing including fluid circulation channels (32 to 34) terminating firstly in the second chamber (31) and secondly in the first chamber (14) and/or in that portion of the pipe (29) lying between the first chamber (14) and the pumping means, with a heat exchanger (41) being disposed on the path of the pipe (29).
REFERENCES:
patent: 2938664 (1960-05-01), Noller
patent: 3833318 (1974-09-01), Nakayama et al.
patent: 3913346 (1975-10-01), Moody, Jr. et al.
patent: 3961862 (1976-06-01), Edstrom et al.
patent: 4125210 (1988-02-01), Suzuki et al.
patent: 4228657 (1980-10-01), Leo
patent: 4420291 (1983-12-01), Winstead
Crinquette Jean-Marie
Long Jacques
Riach Allan
Sibuet Rene
Wright Dan
Cavanaugh David L.
Societe Anonyme dite: Alcatel Cit
Vrablik John J.
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