pass through expansion filter 58 expansion filter 58 removes any grease and other particulates from the emissions expansion filter 58 can be removed cleaned and replaced when contaminated once through expansion filter 58 the hot air and steam emissions then travel around each baffle extension 60 while traveling around each baffle extension 60 the pressurized emissions expand and cool the lengthened back and forth path also provides many opportunities for the cooling gas and particles to condense on baffle 54 the now cooler and partially condensed hot air and steam emissions then exit expansion chamber 34 and enter condensing tubes 44 of condensing chamber 36 the details of condensing chamber 36 are shown in fig5 7 and 9 condensing chamber 36 contains at least one but preferably a plurality of condensing tubes 44 that run from expansion chamber 34 to chilling chamber 38 condensing tubes 44 preferably are at a decline from expansion chamber 34 to chilling chamber 38 to facilitate draining of condensate 46 into the chilling chamber condensing tubes 44 each have a plurality of cooling fins 62 extending from the outer condensing walls of the condensing tubes both condensing tubes 44 and fins 62 are made from high thermal conductivity materials such as metals steam and hot air emissions entering each condensing tube 44 are cooled as these emissions pass through the condensing tube fan 52 is constantly pulling room temperature air.