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Piezo electric ceramic igniter
Date:2016/11/25
Description

Piezoelectric ceramic igniter is mainly dependent on the piezoelectric effect of the ceramic components, the mechanical energy into electrical energy, instantaneous discharge, discharge spark ignition gas. It consists of high-voltage ignition needle, high-pressure rubber wire, piezoelectric ceramic, hammer, reset spring, shell and other components (see Figure 4-02). Piezoelectric ceramic is mainly composed of lead-cobalt titanate as the raw material of ceramic materials, by the molding, sintering, the electrode, a series of polarized process made of columnar ceramics. The arrangement of positive and negative ions on the ceramic lattice is non-centrosymmetric, so that a potential difference (voltage) is generated between the two ends of the ceramic under external force. The resulting voltage level and the external force and the piezoelectric ceramic is proportional to the height, inversely proportional to the ceramic cross-section. Igniter is two geometric shape with the pressure ceramic connected to the cathode, with high-pressure rubber stranded copper wire leads to the cathode with two copper face, the use of polycarbonate plastic seal, easy to piezoelectric ceramic multiple impact . When the knob is pushed and rotated, the knob lever moves the fork on the spool to move the hammer in the igniter and the hammer return spring is compressed. When the knob rotates to 90 °, Under the action of the spring force, the hammer hits the negative pole of the piezoelectric ceramic and generates the instant high voltage (15KV) at the other end (positive pole). The ignition ignites the ground discharge.