The question is vague.

1 A device that collects pollutants in oil fume is called an oil fume purifier. This type of equipment can "collect the oil fume in one place"

2 After collecting the oil fume, it passes through the smoke The device that pipes and fans discharge to the flue or outdoors is called a "hood"

3 The method of collecting the oil fumes from all restaurants along the way through the main smoke pipe and entering the oil fume purification facilities at the end for centralized treatment is often used in commercial The square or food street also "collects oil fumes in one place"

Which one is your question?