초록 ▼

A highly efficient flame arrester adapted for use in preventing an external flame from backflashing upstream in a pipe, or a conduit, or a stream carrying a flammable substance. The flame arrester comprises a contained layer of nested ellipsoids formed from expanded metal sheets made from magnesium

A highly efficient flame arrester adapted for use in preventing an external flame from backflashing upstream in a pipe, or a conduit, or a stream carrying a flammable substance. The flame arrester comprises a contained layer of nested ellipsoids formed from expanded metal sheets made from magnesium alloy foil. The arrester is useful in fuel tanks, combustion systems, sea-going tankers, hot water, or space heaters, and the like.

대표청구항 ▼

[ What is claimed is:] [1.]1. A gas-fired hot water heater which is fire-safed against flash-back ignition of fugitive flammable vapors accidentally occurring in the surrounding atmosphere, said heater comprising:(a) a cabinet,(b) a tank located in said cabinet,(c) a combustion chamber in said cabin

[ What is claimed is:] [1.]1. A gas-fired hot water heater which is fire-safed against flash-back ignition of fugitive flammable vapors accidentally occurring in the surrounding atmosphere, said heater comprising:(a) a cabinet,(b) a tank located in said cabinet,(c) a combustion chamber in said cabinet,(d) a burner mounted in said combustion chamber for heating water in said tank,(e) a gas-supply line leading into said burner,(f) openings in said cabinet for allowing air to enter said combustion chamber to mix with said natural gas and produce a flame in said burner,(g) and nested ellipsoids covering said openings in said cabinet for preventing said flame in said burner from flashing out of said cabinet and igniting fugitive flammable vapors surrounding said cabinet, said ellipsoids being formed from expanded metal sheets made from magnesium alloy foil.