Heater and smoking device including the heater
The present application discloses a heater and a smoking set including the heater. The heater includes: a base, having an inner surface and an outer surface; an infrared radiation layer, formed on the surface of the base; the infrared radiation layer is configured to generate infrared rays and at least heat an aerosol-forming matrix by radiation; a heating body arranged at the periphery of the base, and used to receive electric power from a power supply to generate heat. The heating body is configured to transfer the heat to heat the infrared radiation layer to generate the infrared rays. According to the present application, the infrared radiation layer is heated up by the heating body so that the infrared radiation layer generates infrared radiation to heat the aerosol-forming matrix, thereby reducing the preheating time of the aerosol-forming matrix and improving the user experience.
1 . A heater for heating an aerosol-forming matrix and volatilizing at least one component of the aerosol-forming matrix to form aerosol for smoking by users, comprising:
a base, having an inner surface and an outer surface; the base comprising one or more of quartz glass, sapphire, silicon carbide, magnesium fluoride ceramic, yttrium oxide ceramic, magnesia-alumina spinel ceramic, yttrium aluminum garnet single crystal and germanium single crystal;
an infrared radiation layer, disposed on the outer surface of the base; and
a heating body, arranged at a periphery of the base; the heating body being configured to receive electric power to generate heat, and
Wherein the infrared radiation layer is located between the heating body and the base, and the infrared radiation layer is configured to receive heat from the heating body, so that the infrared radiation layer is heated up by the heat to generate infrared rays configured to penetrate the base and at least heat the aerosol-forming matrix by radiation.
2 . The heater according to claim 1 , wherein the heating body comprises a resistive heating layer formed on the periphery of the base, a first electrode connected with the resistive heating layer and a second electrode electrically connected with the resistive heating layer;
wherein the first electrode and the second electrode are configured to feed the electric power of the power supply to the resistive heating layer.
3 . The heater according to claim 2 , wherein the infrared radiation layer covers at least a part of the outer surface of the base, and the resistive heating layer covers at least a part of a surface of the infrared radiation layer.
4 . The heater according to claim 3 , wherein the resistive heating layer is a patterned conductive track.
5 . The heater according to claim 4 , wherein the patterned conductive track is a spiral resistive heating strip, and the resistive heating strip extends spirally along a longitudinal direction of the base.
6 . The heater according to claim 5 , wherein the resistive heating strip extends at equal pitches along the longitudinal direction of the base.
7 . The heater according to claim 5 , wherein the resistive heating strip extends at varying pitches along the longitudinal direction of the base to distribute the heat supplied to the infrared radiation layer.
8 . The heater according to claim 7 , wherein an outer surface of the infrared radiation layer has at least a first area and a second area; and
a pitch of the resistive heating strip located in the first area is larger than the pitch of the resistive heating strip located in the second area.
9 . The heater according to claim 8 , wherein the first area is located upstream of the second area in a moving direction of the aerosol.
10 . The heater according to claim 3 , wherein the resistive heating layer comprises a continuous conductive film coated on an outer surface of the infrared radiation layer.
11 . The heater according to claim 2 , wherein the heating body further comprises a third electrode electrically connected with the resistive heating layer;
wherein the third electrode is arranged to divide the resistive heating layer into a first part of the resistive heating layer and a second part of the resistive heating layer along a longitudinal direction of the base, and
the electric power fed to the first part of the resistive heating layer and/or the second part of the resistive heating layer is independently controlled to heat different positions of the base such that segmented heating of the aerosol-forming matrix is realized.
12 . The heater according to claim 11 , wherein a length of the first part of the resistive heating layer along the longitudinal direction of the base is greater than a length of the second part of the resistive heating layer along the longitudinal direction of the base.
13 . The heater according to claim 12 , wherein the first part of the resistive heating layer is located upstream of the second part of the resistive heating layer in a moving direction of the aerosol.
14 . The heater according to claim 2 , wherein the resistive heating layer is deposited on the infrared radiation layer by a physical vapor deposition method.
15 . The heater according to claim 2 , wherein the heater further comprises an infrared reflecting layer formed by the resistive heating layer.
16 . The heater according to claim 2 , wherein the heater further comprises an infrared reflecting layer being flexible, wherein a metal material is deposited on a flexible substrate by a physical vapor deposition method, and the flexible substrate is coated on a periphery of the resistive heating layer to reflect the infrared rays radiated to an outside of a base back to the resistive heating layer.
17 . The heater according to claim 16 , wherein the heater further comprises a separator, which is arranged between the flexible substrate and the resistive heating layer to form a gap between the infrared reflecting layer and the resistive heating layer, so as to reduce heat loss in a direction away from the aerosol-forming matrix.
18 . The heater according to claim 1 , wherein the heating body comprises a heating piece separable from the infrared radiation layer and an electrode electrically connected with the heating piece;
wherein the electrode is configured to feed the electric power of the power supply to the heating piece.
19 . A smoking set comprising:
a housing assembly; and
a heater arranged in the housing assembly;
wherein the heater comprises:
a base, having an inner surface and an outer surface; the base comprising one or more of quartz glass, sapphire, silicon carbide, magnesium fluoride ceramic, yttrium oxide ceramic, magnesia-alumina spinel ceramic, yttrium aluminum garnet single crystal and germanium single crystal;
an infrared radiation layer, disposed on the outer surface of the base; and
a heating body, arranged at a periphery of the base, and being configured to receive electric power to generate heat, and wherein the infrared radiation layer is located between the heating body and the base, and the infrared radiation layer is configured to receive heat from the heating body, so that the infrared radiation layer is heated up by the heat to generate infrared rays configured to penetrate the base and at least heat the aerosol-forming matrix by radiation.
20 . The heater according to claim 1 , wherein the heating body is in direct contact with the infrared radiation layer.