Tubular heating body and aerosol-generating apparatus
A tubular heating body includes: a heating main body. The heating main body is formed by splicing at least two heating units. In an embodiment, each heating unit of the at least two heating units includes: a substrate tube; an electric heating layer disposed on the substrate tube; and an infrared radiation layer disposed on the substrate tube.
1 . A tubular heating body, comprising:
a heating main body, wherein the heating main body is formed by splicing at least two heating units in an axial direction, and wherein each heating unit of the at least two heating units comprises:
a substrate tube;
an electric heating layer disposed on the substrate tube; and
an infrared radiation layer disposed on the substrate tube; and
wherein the electric heating layer is disposed on an inner wall surface and two end surfaces of the substrate tube, and
wherein the infrared radiation layer is disposed on an inner side of the substrate tube.
2 . The tubular heating body of claim 1 , wherein each heating unit further comprises:
a reflective layer; and
an insulating layer,
wherein the reflective layer, the insulating layer, the electric heating layer, and the infrared radiation layer are sequentially disposed inside the substrate tube.
3 . The tubular heating body of claim 1 , further comprising:
two electrode plates electrically connected to the electric heating layer, and
wherein the two electrode plates are respectively disposed outside two ends of the heating main body.
4 . The tubular heating body of claim 3 , further comprising:
a conductive heat insulating tube disposed between the heating main body and the electrode plate, and
wherein a conductive layer of the conductive heat insulating tube is configured to conduct the electric heating layer and the electrode plate.
5 . The tubular heating body of claim 1 , further comprising:
a heat insulating sleeve sleeved outside the heating main body.
6 . The tubular heating body of claim 5 , further comprising:
a reflective layer disposed on an inner wall surface or an outer wall surface of the substrate tube, or disposed on an inner wall surface of the heat insulating sleeve.
7 . The tubular heating body of claim 1 , wherein fillets are formed on inner circles at two ends of the at least two heating units.
8 . The tubular heating body of claim 1 , wherein an axial length of the substrate tube is 4-6 mm.
9 . The tubular heating body of claim 1 , wherein the electric heating layer and the infrared radiation layer are separately deposited on an inner side of the substrate tube through PVD.
10 . An aerosol-generating apparatus, comprising:
the tubular heating body of claim 1 .
11 . A tubular heating body, comprising:
a heating main body, wherein the heating main body is formed by splicing at least two heating units in an axial direction, and wherein each heating unit of the at least two heating units comprises:
a substrate tube;
an electric heating layer disposed on the substrate tube; and
an infrared radiation layer disposed on the substrate tube;
two electrode plates electrically connected to the electric heating layer, wherein the two electrode plates are respectively disposed outside two ends of the heating main body; and
a conductive heat insulating tube disposed between the heating main body and the electrode plate, wherein a conductive layer of the conductive heat insulating tube is configured to conduct the electric heating layer and the electrode plate.
12 . The tubular heating body of claim 11 , wherein each heating unit further comprises:
a reflective layer; and
an insulating layer,
wherein the reflective layer, the insulating layer, the electric heating layer, and the infrared radiation layer are sequentially disposed inside the substrate tube.
13 . The tubular heating body of claim 11 , further comprising:
a heat insulating sleeve sleeved outside the heating main body.
14 . The tubular heating body of claim 13 , further comprising:
a reflective layer disposed on an inner wall surface or an outer wall surface of the substrate tube, or disposed on an inner wall surface of the heat insulating sleeve.
15 . The tubular heating body of claim 11 , wherein fillets are formed on inner circles at two ends of the at least two heating units.
16 . The tubular heating body of claim 11 , wherein an axial length of the substrate tube is 4-6 mm.
17 . The tubular heating body of claim 11 , wherein the electric heating layer and the infrared radiation layer are separately deposited on an inner side of the substrate tube through PVD.
18 . An aerosol-generating apparatus, comprising:
the tubular heating body of claim 11 .