A MACHINE FOR THE PREPARATION OF BEVERAGES, IN PARTICULAR ESPRESSO COFFEE, AND DEVICE FOR SELF-PRIMING WHICH CAN BE USED IN SAID MACHINE

摘要

A machine for the preparation of beverages, comprising a hydraulic circuit that includes: —a brewing unit; —a water tank; —a pump having its inlet connected in fluid communication to the water tank and its outlet or delivery connected in fluid communication to the brewing unit; —a heating device for heating water forced by the pump towards the brewing unit; —a self-priming device (22), which comprises a hollow housing structure (27, 28), having an inlet (22a) in fluid communication with the outlet or delivery of the pump, and an outlet for spillage of water towards a collecting space, in particular the water tank. The self-priming device (22) comprises a spillage member (30), which is set between the inlet (22a) and the outlet (22b). The spillage member (30) has a body that is made of a material that is permeable to water and to air and that is such as to be traversed by water and air when the pump is active.