Imashini ihumeka igizwe ahanini n'ibice bitandatu bikurikira: moteri, akayunguruzo k'umwuka, umubiri w'imashini ihumeka, icyumba cy'umwuka, ishingiro (n'ikigega cya lisansi), umunwa w'amazi. Imashini ihumeka ikoresha imikorere idasanzwe ya rotor iri muri silinda, kandi impinduka hagati y'amasasu mu mwanya wa rotor izamo umwuka, igakanda kandi igasohora. Mu gihe ikora, itandukaniro ry'umuvuduko w'imashini ihumeka rikoreshwa mu kohereza amavuta mu munwa w'amazi, amazi agatonyanga muri silinda kugira ngo agabanye gukururana n'urusaku, mu gihe gukomeza kubika umwuka muri silinda bitagaruka, bene izi mashini zihumeka nazo zitwa slip-vane blowers
