| 摘要 |
A muffler purifying device for combustion gases of general application including an expanded external casing having anterior and posterior end intakes equipped with nozzles, one connected to the exhaust pipe and the other for discharging gases, between which is included a unit of elements for retaining impurities and purifying the gases in the form of a cartridge which is removable from the external casing through an aperture located at the posterior end, equipped with a removable cover. The removable cartridge has a tubular wall with its own anterior end intake having an aperture defining an internal nozzle into which the exhaust pipe extends. The removable cartridge further comprising a first chamber for expansion and distribution of gases onto a first filtering partition made up of a packet of spread metallic disks held between perforated caps, a second chamber for the concentration and acceleration of gases having an annular blocking screen located therein projecting in the direction of the first partition and defining a sub-chamber for the expansion and distribution of gases on a second filtering partition. The second filtering partition is formed of a ceramic piece with narrow longitudinal perforations thereby providing a restricting passage for gases which discharge from the second filtering partition into an acceleration chamber of a "Venturi" piping. The "Venturi" piping also has a high velocity section into which ends a suction nozzle which communicates with outside air. The "Venturi" piping ends in a chamber for expansion and distribution of gases onto a third filtering partition, likewise formed by a ceramic piece with narrow longitudinal perforations providing a restricting passage for gases which discharge into a predischarge chamber in the external casing between the third filtering partition and the removable cover of the casing.
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