WATER GUN Russian patent published in 2017 - IPC A62C31/00 

FIELD: engines and pumps.

SUBSTANCE: water cannon, it comprises a nozzle to create a directional flow and ignition system, displacement chambers, combustion chamber and feeder preparation and fuel mixture. According to the invention it is in the form of an artillery shell, at the top of which is placed a barrel, and the cylindrical part is formed as a cylinder with a piston and rod cavities, the rear cylinder cover is designed as a flange, and displacement chambers formed by the internal volume of the barrel, with the outer side of the rear cylinder-cover flange is mounted by an air cylinder and a piston rod connected to the cylinder and combustion chamber is interfaced with the barrel and is adapted to output combustion products inward displacement of the barrel chamber as the barrel is connected to the piston chamber of the hydraulic cylinder, which is designed for the reception and further transfer of water inwardly displacing a portion of the barrel chamber, the hydraulic cylinder rod is covered by two springs, large and small, which on one base lean against the flange of the rear cover of the hydraulic cylinder, and with the other base the large spring rests against the piston of the hydraulic cylinder, and the small spring rests against the stop flange on the rod of the hydraulic cylinder. The rod of the hydraulic cylinder formed composite and is divided into three parts: a rod end of the hydraulic cylinder is placed a flange portion of the hydraulic cylinder rod which is divided into a main portion connected to the piston of the hydraulic cylinder and a pneumatic part on which the piston of the pneumatic cylinder is mounted, the second part of the hydraulic cylinder rod in the rest position is arranged inside displacing the barrel chamber and is formed as a small piston which is mounted to be connected to the piston of the hydraulic cylinder, the piston is mounted on a small locking rod which th is adapted to close the nozzle of the barrel chamber and displacing a third part of the cylinder rod, and a pneumatic cylinder connected to the device preparation and feeding fuel mixture.

EFFECT: device that is part of the energy ignited fuel-air mixture directs the preparation of the next shot, ie fills the barrel draws in water and fuel mixture to the desired compression to obtain a higher pressure in combustion.

2 cl, 4 dwg