| 摘要 |
<p>A method and apparatus (10) for thermally killing weeds and other unwanted vegetation from areas where their presence is undesirable. The method and apparatus (10) are especially useful for killing weeds located adjacent auto or rail roadways or airport runways. The method of killing weeds involves first spraying the weeds with an amount of water sufficient to cover a substantial portion of the exposed outer parts of the weeds, and then subjecting the water covered weeds to an elevated temperature sufficient for the time of exposure to kill them. The apparatus (10) for thermally killing weeds by this method includes a water sprayer unit (50) and a heater enclosure or box (20), the water sprayer unit (50) being located in front of the heater box (20). The heater box (20) has burners (44) located at the forward end thereof that impact a heatable element (32) capable of generating infra-red radiation. A porous apron (23) extends between the bottom (22) of the heater box (20) and the ground to allow exhausting of combustion products and water vapor.</p> |
