Patent ID: 6044910
Filing Date: 2000-04-04
Classification: A62C,B01F,Y10T

Abstract:
A device for introducing CO.sub.2 into an extinguishing medium, comprising:a housing having an upper end, a lower end, a longitudinal axis, and including a flow channel, a feed line for extinguishing means, a CO.sub.2 feed pipe having an end, a metering valve for CO.sub.2 in fluid communication with the feed pipe, and an outlet line;wherein the housing is aligned with its longitudinal axis vertical, the feed line is connected to the housing at the housing lower end, and the outlet line branches off from the housing upper end;wherein the CO.sub.2 feed pipe extends into the housing from the housing upper end, extends at least approximately up to the housing lower end, and is provided at the feed pipe end with injection means;wherein when CO.sub.2 is in the feed pipe and is directed in a flow direction opposite to a flow direction of the extinguishing means, and the length of the feed pipe between the metering valve and injection means is selected such that during operation with the metering valve closed a gas cushion forms downstream of the metering valve.