SPRINKLER (VERSIONS) Russian patent published in 2000 - IPC

FIELD: fire-fighting equipment, more specifically, sprinkling devices for local fire extinguishing in rooms with many possible fire seats, for instance, in rooms of hospitals, libraries, museums, offices, warehouses, storages, garages. SUBSTANCE: sprinkler includes body with channel for supply of liquid, thermal lock with valve shutting-off sprinkler outlet, and unit fastening thermal lock. According to the first version, sprinkler Channel is formed by cylindrical section connected with section made in form of conical diffuser. For generation of uniform finely divided gas-drop flow with high kinetic energy of drops and uniform distribution is space, length of cylindrical section exceeds diameter of channel on this section, and length of section in form of conical diffuser equals diameter of channel on cylindrical section. Angle of cone vertex forming surface of conical diffuser amounts up to 10 to 50 deg. According to the second version, sprinkler Has two coaxial channels for supply of liquid. Length of cylindrical axial channel exceeds its diameter. The second channel is coaxial to the first channel and provided with helical guide members. Sprinkler outlet is formed by hole of axial cylindrical channel and found at a distance from the latter in radial direction equaling annular hole of axial channel. EFFECT: higher efficiency. 10 cl, 3 dwg