(19)
(11) EP 1 167 769 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.01.2003 Bulletin 2003/01

(43) Date of publication A2:
02.01.2002 Bulletin 2002/01

(21) Application number: 01112998.8

(22) Date of filing: 11.06.2001
(51) International Patent Classification (IPC)7: F04C 18/344
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 26.06.2000 IT MI001431

(71) Applicant: ING. ENEA MATTEI S.p.A.
I-20090 Vimodrone Milano (IT)

(72) Inventor:
  • Fumagalli, Giorgio
    20046 Biassono (Milano) (IT)

(74) Representative: Petruzzelli, Antonio European Patent Attorney 
C.so Italia, No. 43
20122 Milano
20122 Milano (IT)

   


(54) Rotary sliding-vane air compressor


(57) 
  • 1. A rotary sliding-vane compressor comprising:a longitudinally extended cylindrical stator (3) having an internal cylindrical surface defining a compression chamber (7); a longitudinally extended cylindrical rotor (9) eccentrically inserted in said stator (3), said rotor (9) having a series of radial grooves (11) which extend longitudinally to the rotor (9); and a series of longitudinally extended radial vanes (13), each vane (13) having an apex and a base of the vane (13) and being radially slidable in one corresponding groove (11) of the rotor (9) between a radially retracted position and a radially extended position; at the radially extended position each vane (13) coming into contact with the internal cylindrical surface of the stator (3) along a longitudinal contact generatrix (23) separating two compression zones (19m, 19v) of said compression chamber (7) with different pressure, the compression zone (19m) with lower pressure being in fluid communication with a space (27) between the base (25) of the vane (13) and the groove (11) wherein the vane (13) slides; characterised in that the apex of each vane (13) provides a nose (30) projecting into the compression zone with higher pressure (19v).






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