Air filter with slide mount for filtering element

The air filter (40) comprises a shell (48) and a/the opening. Capable of opening (70) is shell is resisted on the shell (48) inner space. With the slot filter medium filter chamber (50) to be from the air filter to take out, and change. A shell (48) is constructed and is realized element (50) is connected convex with the shell (48) of the sealing joint. A/the opening comprising a convenient to support, and face of the filter chamber correcting fixing the structure of the outer shell. A mounting filter unit of an air purifier method, comprising such that the part of the filter chamber is slidingly along the sliding face of the outer shell. Method for maintaining air purifier, comprising bulldozes the filter chamber to the cavity supporting point, a release to sealing between the filter chamber and outer shell.