PURPOSE: To provide an air purifying equipment capable of drawing an oily hume developed by a source in a cooking utensil and the like positively into an air purifying section for efficiently removing the oily hume, by proving to it an air curtain.

CONSTITUTION: When a fan motor 2 is started during cooking, with an oily hume developing unit 6 located at a portion 10 where an air curtain developing unit is installed, an air flows passing through a dust collecting section 3 and enters partially into an air venting tube 7 through an opening 11 and a communicating tube 4, wherefrom it is exhausted through a slit 8 for forming an air curtain. The air curtain functions to guide an oily hume moving upwardly from the oily hume developing unit 6 into a center of air purifying equipment 1. The oily hume, after being drawn by a fan motor 2 and separated by a dust collecting section 3, has its clean air exhausted upwardly from a partial air exhaust outlet 9 and another part thereof guided into an air curtain developing section 5 through a communicating tube 4 for forming the air curtain.