Atomization assembly, atomizer, and electronic atomization device

An atomization assembly, comprising:

• a support, configured to be of a tubular structure having openings in two ends, a liquid inlet being provided in a side wall of the support, an accommodating cavity communicated with the liquid inlet and an airflow channel communicated with the accommodating cavity being formed in the support, air flowing in from an opening in one end of the support and flowing out from an opening in the other end of the support through the airflow channel;
• a heating element, a liquid substrate being able to flow into the heating element through the liquid inlet, to cause the heating element to heat the liquid substrate and generate an aerosol;
• a liquid transfer unit, in contact with the heating element, the liquid transfer unit being configured to:
• extract the liquid substrate flowing in from the liquid inlet and transfer the extracted liquid substrate to the heating element, wherein the heating element is located between the airflow channel and the liquid transfer unit;
• and
• a heat insulation member, configured to hold the heating element and the liquid transfer unit, so as to be assembled into the accommodating cavity together with the heating element and the liquid transfer unit, wherein at least a part of the heat insulation member is arranged between the heating element and an inner surface of the support to provide separation.

An atomizer, comprising:

• a housing assembly, having a liquid storage cavity for storing a liquid substrate, the housing assembly comprising a first part and a second part which are longitudinally arranged, a first part liquid storage cavity being defined inside the first part, and a radial size of the second part being less than a radial size of the first part;
• a heating element, configured to heat a part of the liquid substrate to generate an aerosol;
• a liquid transfer unit, in contact with the heating element, the heating element and the liquid transfer unit being arranged in a longitudinal direction of the housing assembly and dividing the second part to form an airflow channel and a second part liquid storage cavity;
• and
• a support, configured to hold the heating element and the liquid transfer unit inside the second part,
• wherein a part of a surface of the liquid transfer unit defines a boundary of the second part liquid storage cavity, and the second part liquid storage cavity is in flow communication with the first part liquid storage cavity;
• and a part of a surface of the heating element defines a boundary of the airflow channel, and the airflow channel provides a path through which the aerosol flows.