초록 ▼

An explosion-proof battery vent and filler plug (10) is disclosed, which provides a flame barrier (16) to prevent external ignition of gas evolved from a battery during operation from causing ignition of the larger volume of gas within the battery itself, without simultaneously allowing a high rate

An explosion-proof battery vent and filler plug (10) is disclosed, which provides a flame barrier (16) to prevent external ignition of gas evolved from a battery during operation from causing ignition of the larger volume of gas within the battery itself, without simultaneously allowing a high rate of evaporation of the electrolyte. In accordance with the invention, the flame barrier means (16) is provided with an indirect, restricted outlet (64) for the evolved gases to pass to the atmosphere, thus reducing the flow of air through the electrolyte space of the battery. The preferred embodiment includes a filler tube (14) with a funnel-shaped entrance (24) within a shell member (12) which sealingly engages an opening of a battery. Gas evolved from the battery during operation passes into a splash chamber, (46) then through a baffle (18) into an expansion chamber 52, and then flows through a microporous disk flame barrier (16) into an exit chamber, (65), and vents to the atmosphere through vent holes (64) which are substantially smaller than any previous passage through which the gas has passed, thus forming an indirect, a restricted outlet for battery gases, and a restricted inlet for air flow to limit the rate of evaporation of electrolyte.

대표청구항 ▼

A vent plug for a storage battery, comprising: a filling tube mounted to enter said battery with its inner end below the level of the electrolyte of said battery; said filling tube being formed as a funnel at its outer end; a shell portion surrounding a portion of said filling tube including said fu

A vent plug for a storage battery, comprising: a filling tube mounted to enter said battery with its inner end below the level of the electrolyte of said battery; said filling tube being formed as a funnel at its outer end; a shell portion surrounding a portion of said filling tube including said funnel; said shell portion having a portion adapted to be sealably inserted in an opening in said battery, and including means for retaining said vent plug in said battery; said shell portion defining a first chamber and a passage communicating between said first chamber and the interior space of said battery; a baffle member disposed within said shell portion and defining a boundary between said first chamber and a second chamber, said shell portion defining said second chamber therein, said baffle member further defining a passage communicating between said first chamber and said second chamber; a flame barrier member disposed within said shell portion; said flame barrier member defining a boundary between said second chamber and a third chamber, said shell portion defining a third chamber therein; said flame barrier member being substantially impervious to electrolyte of said battery, and allowing the flow of gases evolved from said battery therethrough; said shell portion defining a passage therethrough communicating between said third chamber and the atmosphere for allowing the passage of gas therethrough and forming means for limiting the evaporation of said electrolyte by preventing the circulation of air within said third chamber.