Explosion relief valve
AssigneeHoerbiger Ventilwerke Aktiengesellschaft
InventorsJohannes Kühmayer, Johannes Besau
Life of this patent
Estimating the term…
Abstract
An explosion relief valve for a confined space, more particularly for the crankcase of an internal combustion engine, includes a seat (1) which may be fitted into a boundary wall (3) of the space to be protected, a spring-loaded closure plate (4) cooperating with the valve seat, at least one flame barrier (9) having low pressure resistance in the gas path leading through the valve, preferably consisting of sheet-metal strips stacked one above another transversely to the throughflow direction of the gas, which sheet-metal strips are provided preferably at least over part of their width with irregular corrugations, and at least one other perforated wall (11, 12) in the gas path of expanded metal.
Claims20
An explosion relief valve for a confined space, comprising:
- a valve seat which may be fitted onto a boundary wall of the confined space,
- a cover plate,
- attachment means extending between said cover plate and said valve seat for positioning said cover plate in spaced relation to said valve seat and defining a gas path through said valve,
- a spring-loaded closure plate located between said cover plate and said valve seat for cooperating with the valve seat,
- at least one flame barrier having low pressure resistance installed between said cover plate and said valve seat and in said gas path, and
- at least one other perforated wall of expanded metal installed between said cover plate and said valve seat and in said gas path, said at least one flame barrier and perforated wall both being positioned downstream of the valve seat.
An explosion relief valve for a confined space having a boundary wall, comprising:
- a valve seat,
- a cover plate,
- attachment means extending between said cover plate and said valve seat for positioning said cover plate in spaced relation to said valve seat and defining a gas path through said valve,
- a spring-loaded closure plate located between said cover plate and said valve seat for cooperating with the valve seat and forming a central interior area between said closure plate and said valve seat,
- at least one flame barrier having a low pressure resistance installed between said cover plate and said valve seat and in said gas path and surrounding the central interior area,
- at least one perforated wall of expanded metal located adjacent the at least one flame barrier and between said cover plate and said valve seat, and
- wherein gas from within the confined space is expelled through the boundary wall, thereby forcing the closure plate to move and allow the gas to flow into an interior area and out through the at least one perforated wall and the flame barrier, the gas being cooled before being expelled into the atmosphere outside the confined space.
An explosion relief valve for a confined space with a boundary wall, the valve comprising:
- a valve seat with a central opening;
- a cover plate;
- attachment means extending between said cover plate and said valve seat for positioning said cover plate in spaced relation to said valve seat and forming a central chamber;
- a spring-loaded closure plate located within said central chamber and cooperating with the valve seat to form a movable closure for said central opening in said valve seat;
- at least one flame barrier having low pressure resistance which is located between said cover plate and said valve seat and concentrically located about said central chamber to form a gas path through which gas escapes from said explosion relief valve;
- at least one perforated wall which is located between said cover plate and said valve seat and adjacent the at least one flame barrier, said at least one perforated wall having webs of expanded metal forming perforated openings which extends from said valve seat to said cover plate so as to retard flow of gases escaping said valve;
- and
- wherein gas from within the confined space which is expelled through the boundary wall will force the closure plate to move and allow gas to flow into the central chamber, through said at least one perforated wall, and out through the flame barrier, said gas becoming cooled as it passes through the perforated wall and flame barrier.
Dependencies are inferred from the claim text.