| 摘要 |
The housing of a smoke generator is provided with an outlet passage conducting a blower induced flow of particulate material from a hopper. An inflow of air is conducted to the blower separate from the material through a conduit extending through the hopper. The material is comminuted before entering the blower and is discharged by the blower into the outlet passage to accumulate on the upstream side of a screen which also forms a burner element activated by means of a switch to effect combustion of the accumulated material. The smoke so produced is displaced through the screen under the pressure produced in the outlet passage by the blower.
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