SYSTEM FOR DISPENSING A FOAM OF A FLUID PRODUCT

摘要

The invention relates to a system for dispensing a foam of a fluid product (P) comprising a head (3) wherein a mixing chamber (4) of said product with air (A) is formed, said head having: a passage for product (23) and a passage for air (25); a unit for foaming (5); a supply valve (30) of the mixing chamber (4) which comprises a product valve (31) and an air valve (32); a passage for return air (33) which is provided with an air return valve (34); the supply valve comprising a membrane (30) whereon the product (31) and air (32) valves are formed, said membrane being arranged in order to be reversibly mobile starting at a pressure that the source of product (24) or that the source of air (26) exerts on it, between a stable position wherein the passages of the product (23) and of the air (25) are closed by the intermediary of the corresponding valve (31, 32) and a stressed position wherein the passages for product (23) and for air (25) are open in order to supply the mixing chamber (4).