The ornamental design for a personalvaporizer, as shown and described.
FIG. 1 is a front perspective view of a personal vaporizer;
FIG. 2 is a bottom rear perspective view thereof.
FIG. 3 is a front view thereof.
FIG. 4 is a rear view thereof.
FIG. 5 is a left view thereof.
FIG. 6 is right view thereof.
FIG. 7 is a top view thereof.
FIG. 8 is a bottom view thereof; and,
FIG. 9 is a top front perspective view shown with a cartridge installed for environmental purposes.
The broken lines in FIGS. 2, 7, and 8 depict portions of the personal vaporizer that form no part of the claimed design; the broken lines in FIG. 9 are for environmental purposes that form no part thereof.