Atomizer and electronic atomization device

A vaporizer, configured to vaporize e-liquid, comprising:

• a liquid storage cavity configured to store the e-liquid;
• a mounting base comprising a housing and a separating plate arranged in the housing, the separating plate comprising a through hole, and the through hole being in communication with the liquid storage cavity;
• a vaporization core mounted in the mounting base and configured to heat and vaporize the e-liquid;
• a seal member arranged between the separating plate and the vaporization core, the seal member comprising an opening that is in communication with the through hole for the e-liquid to enter the vaporization core through the opening;
• and
• two vent grooves provided between the mounting base and the seal member, the two vent grooves being in communication with the liquid storage cavity and external air,
• wherein the two vent grooves are provided on a side of the separating plate that faces away from the liquid storage cavity,
• wherein the two vent grooves comprise a first vent groove and a second vent groove that are adjacent to each other in an end-to-end manner and are provided around the through hole of the separating plate,
• wherein the two vent grooves are arranged in a same plane, and
• wherein an air inlet of the first vent groove is adjacent to a vent opening of the second vent groove, and a vent opening of the first vent groove is adjacent to an air inlet of the second vent groove.