Atomiser and electronic atomisation device

An atomiser comprising:

• a proximal end and a distal end, the proximal end and the distal end facing away from each other in a longitudinal direction;
• a liquid storage cavity configured to store a liquid substrate;
• an atomisation component configured to atomise the liquid substrate to generate aerosols;
• a mouthpiece assembly, located at the proximal end and used for a user to draw in aerosols, wherein the mouthpiece assembly is internally provided with a first hollow and a second hollow that are sequentially arranged in the longitudinal direction, the first hollow is closer to the proximal end than the second hollow, and an inner diameter of the first hollow is greater than an inner diameter of the second hollow to define a first step between the first hollow and the second hollow;
• and
• a tubular element, at least partially defining an aerosol output channel that is configured to output aerosols to the mouthpiece assembly, wherein the tubular element is provided with one or more elastic arms extending toward the distal end, and the one or more elastic arms extend into the first hollow through the second hollow and abut against the first step, to prevent the mouthpiece assembly from being separated or removed from the tubular element.

An atomiser comprising:

• a main housing having a proximal end and a distal end;
• a liquid storage cavity, defined in the main housing and configured to store a liquid substrate, wherein the liquid storage cavity has an opening near the proximal end for injecting a liquid substrate;
• an atomisation component, configured to atomise the liquid substrate to generate aerosols;
• a mouthpiece assembly, connected to the proximal end and used for a user to draw in aerosols, where the mouthpiece assembly comprises a seal element configured to seal the opening;
• and
• a tubular element, at least partially defining an aerosol output channel that is configured to output aerosols to the mouthpiece assembly, wherein the tubular element comprises a first portion and a second portion that are sequentially arranged from the proximal end to the distal end, an outer diameter of the first portion is smaller than an outer diameter of the second portion, and a position at which the first portion and the second portion connect is longitudinally lower than an end surface of the proximal end of the main housing,
• wherein the seal element is configured to maintain a gap with the first portion to discharge air in the liquid storage cavity when entering the opening until being in contact with the second portion to seal the opening.