Tobacco evaporator and heating control method

A tobacco evaporator wherein comprising a first chamber (11) configured to accommodate a substance to be evaporated, and a second chamber (12) configured to define a heating element (13), the first chamber (11) and the second chamber (12) are communicated with each other to form a first airflow passage;

• wherein at least two spaced layers of mesh filter layer structures (14) are defined in one end of the first chamber (11) adjacent to the second chamber (12), the filter layer structures (14) comprising a first filter layer (141), and a second filter layer (142) which is defined between the first filter layer (141) and the second chamber (12), the first filter layer (141) is distributed with a plurality of first filter holes (1411), the second filter layer (142) is provided with a plurality of second filter holes (1421);
• wherein the heating element (13) extends along an axial direction of the second chamber (12) in a spiral shape and abuts against a chamber wall of the second chamber (12) to transfer heat to the substance to be evaporated through the first airflow passage when the heating element (13) generates heat, so as to uniformly heat the substance to be evaporated;
• and wherein the second chamber (12) is provided with a heat insulation sleeve (15) to thermally insulate the second chamber (12) when the heating element (13) generates heat;
• the tobacco evaporator further comprises a housing (1) comprising a receiving space, a barrel body (16) extending axially along the housing (1) is detachably defined inside the receiving space;
• the barrel body (16) comprises a first barrel body (161) and a second barrel body (162) which is formed by radially shrinking along the first barrel body (161), and the first chamber (11) is formed in the first barrel body (161), the second chamber (12) is formed in the second barrel body (162);
• a hollow bracket (18) is defined inside the housing (1);
• a first space (111) for heat insulating is defined between the first barrel body (161) and the bracket (18), the first space (111) is filled with a thermal insulation material;
• wherein a second space (121) for insulating is defined between the heat insulation sleeve (15) and the second barrel body (162);
• and wherein a third spacing space (10) is further defined between the housing (1) and the bracket (18).