Patent ID: 8556594

Claim:
An evacuator apparatus comprising: a vacuum pump for creating a negative pressure to draw a fluid; a scrubber for collecting the fluid drawn by the vacuum pump; and a vacuum ejector coupled between the vacuum pump and the scrubber, the ejector including: an ejector body that has a passageway having an orifice through which the fluid drawn by the vacuum pump flows; a nozzle installed at the ejector body to inject a purging gas to the orifice to form a mix of the fluid drawn by the vacuum pump and the purging gas and to create a relative low pressure between the vacuum pump and the scrubber to aid transport of the mix of the fluid drawn by the vacuum pump and purging gas to said scrubber; and a heater to heat the purging gas to a temperature higher than an initial temperature of the fluid drawn by the vacuum pump such that the mix of the fluid drawn by the vacuum pump and the purging gas has a temperature higher than the initial temperature of the fluid drawn by the vacuum pump.