Heat exchanger with spirally feeding through the central tube

Heat exchanger with: - a sleeve which extends along a longitudinal axis (L) and surrounding a casing (M) of the heat exchanger (1), - a tube bundle (R) arranged in the housing (M) with a plurality of tubes (70) helically wound around a central tube (10) extending along the longitudinal axis (L) and - at least one reservoir predispensing (50) arranged in the housing (M) for receiving and degassing of a mixture of liquid and gas (F ') designed for feeding the liquid (F) degassed in at least one reservoir predispensing (50) to a distribution device (60), configuring the dispensing device (60) so that apply liquid (F) to the tube bundle (R), characterized in that the sleeve (20) has at the top (2) of the heat exchanger (1) an inlet (30 ) aligned with the longitudinal axis (L), especially in the form of inlet pipe (30) having one with ection flow with the central tube (10), and that the central tube (10) has at least one hole (100) opening into at least one reservoir predispensing (50) so that the mixture of liquid and gas ( F ') can be introduced into the tank predistribution (50), which is arranged at least one through the inlet (30), the central tube (10) and side port (100), at least one, the central tube (10).