VACUUM CLEANER POWER HEAD INCLUDING VOLUTE AND VACUUM CLEANER INCLUDING SAME

A vacuum cleaner includes a canister defining a debris chamber, a power head mounted to a top of the canister, a motor connectable to a power source, and an impeller connected to the motor and operable to generate air flow upon operation of the motor. The power head includes a housing that includes an upper wall, a lower wall, a radial outer sidewall, and a volute that defines a volute chamber. A first portion of the upper wall and a first portion of the lower wall define an impeller chamber. A second portion of the upper wall, a second portion of the lower wall, and the sidewall define a flow passage that extends from the impeller chamber to the volute chamber. The volute is disposed radially outward from the flow passage and includes a lower wall that extends radially outward from the sidewall and around the perimeter of the sidewall.