Abstract: A gas flow accelerator may include a body portion, and a tapered body portion including a first end integrally formed with the body portion. The gas flow accelerator may include an inlet port connected to the body portion and to receive a process gas to be removed from a semiconductor processing tool by a main pumping line. The semiconductor processing tool may include a chuck and a chuck vacuum line to apply a vacuum to the chuck to retain a semiconductor device. The tapered body portion may be configured to generate a rotational flow of the process gas to prevent buildup of processing byproduct on interior walls of the main pumping line. The gas flow accelerator may include an outlet port integrally formed with a second end of the tapered body portion. An end portion of the chuck vacuum line may be provided through the outlet port.

Abstract: A waste food processor has a housing with an upper room and a lower room communicated with each other, a first grinding assembly and a second grinding assembly respectively received within the upper and lower rooms, and a cleaning assembly connected to the first grinding assembly for cleaning residues remained on the first grinding assembly to make the removed residues further processed by the second grinding assembly. Particularly, the first grinding assembly is composed of a first toothed drum and second toothed drum respectively with different sharp teeth and cutouts to make engaging gaps in different sizes so that solid residues in large sizes also can be introduced between the first and second drums for grinding. Thereby, grinding capability and efficiency of the waste food processor are significantly improved.