| 摘要 |
The invention refers to small portable water, foam fire extinguishers of aerosol type of single use, of various sizes, in bottles of a total content up to 1400 ml, that consist of one bottle (figure 2-1), a shutter (figure 2-3), a valve (figure 2-2), the foamy fire extinguishing material (94% water + 6% foamy material) (figure 3-4), their propellant material (figure 3-6) and based on the invention, their loading, apart from the foamy fire extinguishing material and their propellant gas, they contain a small quantity (20, 30, 40, 50 or more grams) of one or more liquefied volatile gases of low pressure that have a weight (figure 3-5) and they leak right after the propellant material that does not have any weight; thus they provide the potential to the user to check any leak of the propellant gas as well as the loss of pressure of the fire extinguisher by the weighing method of the fire extinguisher. |
