FIELD: process engineering.
SUBSTANCE: invention relates to foam dispenser. Proposed device comprises pump assembly. Said pump assembly comprises fluid pump and air pump. Said pumps are driven from common control element. Said control element may be displaced relative to stationary section of pump assembly to feed fluid and air into common dispensing channel. Fluid and air get mixed in said channel to produce foam. Said control element operate to drive both aforesaid pumps. First driving stroke of proposed device make fluid pump feed fluid and air pump feed air into dispensing channel to produce foam. Second driving stroke make air pump feed air in said dispensing channel. Fluid pump moves at a time with control element during said second driving stroke.
EFFECT: higher efficiency, fluid and air savings.
12 cl, 17 dwg
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