초록 ▼

A flame arrestor for a battery manifold through which gases are vented from cells and liquid is occasionally pumped to replenish electrolyte in the cells comprises two chambers connected by a liquid trap. The trap is connected to each chamber such that liquid tends to drain from the chamber into the

A flame arrestor for a battery manifold through which gases are vented from cells and liquid is occasionally pumped to replenish electrolyte in the cells comprises two chambers connected by a liquid trap. The trap is connected to each chamber such that liquid tends to drain from the chamber into the trap and thereby seals the trap. The liquid seal suppresses any flame attempting to propagate through the manifold. Gas buildup in the manifold displaces liquid from the trap into the downstream chamber, whereupon gas flows through the chamber for venting and the liquid is returned to the chamber to reform the seal.

대표청구항 ▼

In a battery comprising two or more electrochemical cells interconnected by venting means for venting flammable gas from the cells and for occasionally conveying liquid to the cells for replenishing electrolyte therein, the improvement comprising a flame arrestor incorporated into the venting means

In a battery comprising two or more electrochemical cells interconnected by venting means for venting flammable gas from the cells and for occasionally conveying liquid to the cells for replenishing electrolyte therein, the improvement comprising a flame arrestor incorporated into the venting means such that the gas flow path through the venting means is from a first portion through the flame arrestor to a second portion, said flame arrestor comprising a liquid trap comprising first and second conduit arms and a fluid flow connection therebetween, said arms extending generally upward from the connection suitably to trap liquid within the conduit arms about the connection sufficient to temporarily block gas flow therethrough for suppressing flame in the gas, said first arm communicating with said first portion of said venting means to cause gas buildup within said portion to displace liquid into the second arm, a chamber connected to the second liquid trap arm and communicating with said second venting means portion above said second conduit arm to permit gas flow through the chamber from the liquid trap to said second venting means portion, said chamber being suitably connected to said second arm for receiving liquid displaced from the liquid trap by gas buildup with said first portion of said venting means and for draining liquid into the liquid trap in the absence of said gas buildup, said chamber having a fluid flow path cross section larger than the connected conduit arm and a volume greater than said liquid trap to retain liquid within the chamber sufficient to block the trap while permitting gas flow therethrough for venting.