Patent ID: 7419533

Claim:
A separable air purifying apparatus which inhales external air, purifies the external air by filter members, and then discharges out the purified air, the separable air purifying apparatus comprising: a plurality of ventilation modules; controllers in said ventilation modules for controlling the ventilation modules; a main purifier in one of said modules and at least one auxiliary purifier in another of said modules, said purifiers each being independently operated by respective power supplies, wherein the main purifier includes an output terminal and the auxiliary purifier includes an input terminal, whereby the input terminal of the auxiliary purifier may be joined to the output terminal of the main purifier during assembly of the main and auxiliary purifiers, to thereby drive the ventilation module of the auxiliary purifier via the controller of the main purifier and thus enable a combination of operation of the main and auxiliary purifiers, and wherein the main purifier and the auxiliary purifier include a display on which a running state thereof and a degree of pollution are indicated, respectively.