Piezoelectric oscillating device

A piezoelectric oscillating device, comprising:

• a multi-section guiding component including a plurality of guiding units, each guiding unit having a hollow space, the plurality of guiding units being connected together along a longitudinal direction in such a manner that the hollow spaces are connected in series to form the multi-section guiding component, and a guiding channel is formed inside the multi-section guiding component by connecting the plurality of hollow spaces in series, and
• an oscillation generating component including a housing unit and a piezoelectric component, the housing unit being connected to an end of the multi-section guiding component in the longitudinal direction, the piezoelectric component being disposed in a disposing space in the housing unit and oscillating via a control of a piezoelectric signal,
• wherein the housing unit of the oscillation generating component includes a communication channel which communicates between the disposing space and the guiding channel in such a manner that the disposing space communicates with the guiding channel, and the communication channel includes an extending part and a connecting part, the extending part being in communication with the guiding channel and the connecting part communicating between the extending part and the disposing space, wherein an internal diameter of the extending part is equal to an internal diameter of the guiding channel.