Vaporization core and electronic vaporization apparatus

A vaporization core, wherein the vaporization core comprises:

• a porous substrate, the porous substrate comprising a liquid absorbing surface and a vaporization surface;
• and
• a heating element, the heating element being disposed on the vaporization surface, wherein:
• the porous substrate comprises a liquid penetration portion and a temporary liquid storage portion, the liquid penetration portion and the temporary liquid storage portion are connected, the temporary liquid storage portion is close to the vaporization surface, and the temporary liquid storage portion is a portion of a volume of the porous substrate occupied by e-liquid with a maximum vaporizable volume Qc1 in an inhalation cycle of the vaporization core;
• wherein,
• Qc1=V×σ (1)
• in any inhalation cycle of continuous inhalations, the vaporization core meets:
• Q
• cn
• ≥
• Q
• xn
• ≥
• Q
• bn
• (
• 2
• )
• When
• ⁢
• n
• ≥
• 2
• ,
• Q
• cn
• =
• Q
• cl
• -
• ∑
• i
• =
• 1
• n
• -
• 1
• f
• ⁡
• (
• T
• i
• )
• ρ
• +
• v
• b
• (
• h
• )
• ×
• S
• ⁡
• (
• h
• )
• ×
• (
• ∑
• i
• =
• 1
• n
• -
• 1
• T
• i
• +
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• i
• =
• 1
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• 1
• t
• i
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• ×
• σ
• (
• 3
• )
• V is a volume of the temporary liquid storage portion, in units of cm3;
• σ is a porosity of the porous substrate;
• Qcn represents a volume of e-liquid stored in the temporary liquid storage portion before an nth inhalation cycle starts, Qxn represents a volume of e-liquid actually vaporized during the nth inhalation cycle, and Qbn represents a volume of e-liquid entering the porous substrate during the nth inhalation cycle, wherein units of Qcn, Qc1, Qxn and Qbn are all mL;
• i is any integer ranging from 1 to n;
• f(T) represents a function relationship between quality of e-liquid actually vaporized and an inhalation tune in an ith inhalation cycle;
• Ti is a duration of the ith inhalation cycle, in units of s;
• ti is an interval time between the inhalation cycle and an (i+1)th inhalation cycle, in units of s;
• vb(h) is a penetration rate of e-liquid in the porous substrate at a distance h from the vaporization surface, in units of cm/s;
• and S(h) is a cross-sectional area of the porous substrate at a distance h from the vaporization surface, in units of cm′.