Flame arrester

A flame arrester, comprising a flame arrester housing having an inlet and an outlet, and a flame retardant core arranged in the flame arrester housing,

• wherein the flame arrester housing is provided therein with a flame arresting mechanism located between the flame retardant core and the inlet for preventing flame from directly impacting on a central zone of the flame retardant core,
• the flame arrester housing comprises a main body, a first connecting portion connected to the inlet, and the second connecting portion connected to the outlet, with a central axis extending therethrough,
• wherein the flame arresting mechanism comprises a flame retardant plate assembly arranged between at least one of the first and the second connecting portions and the flame retardant core,
• wherein the flame retardant plate assembly comprises at least a first flame retardant plate and a second flame retardant plate mounted on an inner surface of the flame arrester housing, being spaced apart from each other in an axial direction and in a circumferential direction, and the central axis of the flame arrester housing extends through the first flame retardant plates-plate and the second flame retardant plate,
• wherein the first flame retardant plate and the second flame retardant plate are overlapped with each other in a central area of a cross section of the flame arrester housing that is perpendicular to the central axis, and
• wherein each of the first and the second flame retardant plates is a truncated circular flat plate bounded by a major arc segment and a straight segment, and the major arc segment for each of the first and the second flame retardant plates is affixed to the inner surface of the flame arrester housing, the straight segments of the first and the second flame retardant plates are parallel with each other.