(19)
(11) EP 0 322 531 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.03.1990 Bulletin 1990/10

(43) Date of publication A2:
05.07.1989 Bulletin 1989/27

(21) Application number: 88117513.7

(22) Date of filing: 21.10.1988
(51) International Patent Classification (IPC)4: F04C 29/06, F04C 29/08
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 24.12.1987 US 138365

(71) Applicant: TECUMSEH PRODUCTS COMPANY
Tecumseh Michigan 49286 (US)

(72) Inventor:
  • Ortiz, Arturo L.
    Tecumseh Michigan 49286 (US)

(74) Representative: Weitzel, Wolfgang, Dr.-Ing. Patentanwalt 
Friedenstrasse 10
89522 Heidenheim
89522 Heidenheim (DE)


(56) References cited: : 
   
       


    (54) Rotary compressor gas routing for muffler system


    (57) A hermetically sealed rotary compressor is disclosed wherein gas compressed within a compression chamber (85) defined by a cylinder block (84) is discharged through respective discharge ports (130, 140) in the main and outboard bearings (64, 74) defining the ends of the cylinder. Mufflers (90, 92) are provided on the outside ends of the bearings into which the compressed gas is expanded. A constricting gas passageway (160) extending through the bearings (64, 74) and the cylinder block (84) provides a path for constricted flow of gas from one muffler (90) to the other (92). The constricted gas expands upon entry into the other muffler (92), thereby providing a cooler recombined discharge gas for use in cooling oil in the oil sump (114) and cooling the motor stator windings (26).







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