Liquid fuel ultrasonic atomizer construction for a heater

In a liquid fueled heater including a housing defining a combustion chamber with a heat exchanger contiguous thereto and with an ignition zone in the combustion chamber having igniting means extending therein, the improvement comprising a burner head having radially extending web portions supported peripherally in the housing and having a central seating body portion with a longitudinally extending bore therethrough and havng a rear bearing surface, and including an annular grove defined in the longitudinally extending bore, a fuel conduit defined in the said web portion communicating with said annular groove, an ultrasonic atomizer having a peizoelectric part with a metallic portion forming a horn-shaped emitter having an atomizer disk with a central longitudinally extending emitter bore, said front metallic portion having a face bearing against said seating body rear bearing surface and having a radial bore providing communication between said fuel conduit and the emitter bore, said ultrasonic atomizer being disposed in said seating body bore, and a resilient clasp having a central part bearing against the rear of said ultrasonic atomizer and urgin said ultrasonic atomizer into bearing engagement with said seating body portion, said resilient clasp includes radially and axially extending portions, said burner head having lug portions defined in the interior thereof with which the axially extending portions of said clasp are engaged.