Ultrasonic atomization assembly, ultrasonic atomizer and ultrasonic atomization device

An ultrasonic atomizer comprising:

• a liquid storage cavity, configured to store a liquid substrate;
• a third liquid guide element, configured to be in fluid communication with the liquid storage cavity to absorb the liquid substrate stored in the liquid storage cavity;
• a second liquid guide element, configured to receive the liquid substrate absorbed by the third liquid guide element;
• a first liquid guide element, in contact with the second liquid guide element, to absorb the liquid substrate from the second liquid guide element;
• and
• an ultrasonic atomization assembly, comprising an ultrasonic atomization sheet, wherein the ultrasonic atomization sheet is in contact with the first liquid guide element to ultrasonically atomize the liquid substrate in the first liquid guide element to form a liquid mist, wherein
• the first liquid guide element and the third liquid guide element are made of flexible porous materials, and the second liquid guide element is made of a solid porous material;
• and the second liquid guide element further comprises a cotton pressing portion, the second liquid guide element is in contact with the first liquid guide element through the cotton pressing portion, and an end of the second liquid guide element provided with the cotton pressing portion is further provided with an air guide groove and an airflow channel port.