PRESSURE ACCUMULATION-TYPE SPRAYER

WIPO Patent Application WO/2023/210611

A1

[Problem] To provide a pressure accumulation-type sprayer that eliminates an initial set pressure applied to a spring part in an initial set state, and can thereby suppress, as much as possible, plastic deformation of a valve structure (valve body) that comprises the spring part. [Solution] A pressure accumulation-type sprayer X comprising a cylinder body part B that has a main cylinder part B1 and a sub cylinder part B2 and a cover part C that is attached so as to cover the cylinder body part B, said pressure accumulation-type sprayer X being attached to a container J, drawing up a liquid in the container J into the main cylinder part B1 via a first valve FV, applying a pressure to the liquid in the main cylinder part B1, and spraying the liquid from a nozzle part F via a valve structure A when a certain pressure is exceeded, wherein: the valve structure A is installed between a lower support part B23 of the sub cylinder part B2 and an upper support part C1 of the cover part C; and the length L1 of the valve structure A in a load-free state and the minimum distance L2 between the lower support part B23 and the upper support part C1 satisfy the relational expression L1