Patent ID: 8257073

Claim:
Oven ( 10 ) for the thermal conditioning of preforms made of thermoplastic, an oven ( 10 ) that is traversed upstream to downstream by an air stream (A) for cooling the preforms and that comprises successively, in the direction of flow of said air stream (A): an air inlet zone ( 16 a ) that comprises at least one air inlet port ( 22 a ) through which said air stream (A) flows from the outside of the oven ( 10 ) to the inside of the oven ( 10 ), a zone ( 16 b ) for heating the preforms, that comprises means ( 64 ) for heating the preforms and at least one ventilation module ( 36 ) that is able to guide the air stream (A) coming from the inlet zone ( 16 a ) to the preforms, an air extraction zone ( 16 c ) comprising at least one air extraction duct ( 68 ), the air extraction zone ( 16 c ) being traversed by the air stream (A) that flows from the heating zone ( 16 b ) to the outside of the oven ( 10 ), wherein the air inlet zone ( 16 a ) of the oven ( 10 ) comprises an air distribution chamber ( 18 ) which is common to at least two ventilation modules ( 36 ) and which is arranged between the air inlet port ( 22 a ) having associated filtration means ( 26 a , 28 a , 26 b , 28 b ) and between the at least two ventilation modules ( 36 ), closest to the at least two ventilation module ( 36 ) which are connected to the said common distribution chamber ( 18 ), said common chamber constituting an air reserve from which the associated at least two ventilation modules ( 36 ) are able to draw some air.