Power supply unit for aerosol generating device, aerosol generating device, and film heater

Abstract

A power supply unit for an aerosol generating device, the power supply unit comprising: a power supply; a film heater including a pair of electrically insulating bases and a conductive foil disposed between the pair of electrically insulating bases; and a temperature detection unit configured to detect a temperature of the film heater, in which the film heater includes a heater unit configured to heat at least one of an aerosol source and a flavor source, and a mounting portion on which the temperature detection unit is mounted, and a first conductive track and a second conductive track are formed in the conductive foil of the film heater, the first conductive track being provided on the heater unit, and the second conductive track being provided on the mounting portion and connected to the temperature detection unit.

What is claimed is: 
     
         1 . A power supply unit for an aerosol generating device, the power supply unit comprising:
 a power supply;   a film heater including a pair of electrically insulating bases and a conductive foil disposed between the pair of electrically insulating bases; and   a temperature detection unit configured to detect a temperature of the film heater, wherein   the film heater includes a heater unit configured to heat at least one of an aerosol source and a flavor source, and a mounting portion on which the temperature detection unit is mounted, and   a first conductive track and a second conductive track are formed in the conductive foil of the film heater, the first conductive track being provided on the heater unit, and the second conductive track being provided on the mounting portion and connected to the temperature detection unit.   
     
     
         2 . The power supply unit for an aerosol generating device according to  claim 1 , wherein
 the temperature detection unit is disposed on a front surface of the mounting portion.   
     
     
         3 . The power supply unit for an aerosol generating device according to  claim 1 , further comprising:
 a tubular accommodating portion configured to accommodate at least one of the aerosol source and the flavor source, wherein   the heater unit is wound around an outer periphery of the tubular accommodating portion, and   the mounting portion is disposed overlapping an outer periphery of the heater unit.   
     
     
         4 . The power supply unit for an aerosol generating device according to  claim 3 , wherein
 the temperature detection unit is disposed such that a longitudinal direction thereof is along an axial direction of the tubular accommodating portion.   
     
     
         5 . The power supply unit for an aerosol generating device according to  claim 4 , wherein
 a reinforcing plate is provided on the mounting portion, and   the reinforcing plate is disposed such that a longitudinal direction thereof is along the axial direction of the tubular accommodating portion.   
     
     
         6 . The power supply unit for an aerosol generating device according to  claim 3 , wherein
 the tubular accommodating portion accommodates a flavor source accommodating portion configured to accommodate the flavor source,   the flavor source accommodating portion is disposed to allow atomized aerosol to pass therethrough, and   the temperature detection unit is disposed downstream of a center of the heater unit in a flow direction of the aerosol.   
     
     
         7 . The power supply unit for an aerosol generating device according to  claim 1 , wherein
 the film heater is formed integrally with a flexible wiring board connected to the heater unit and the mounting portion.   
     
     
         8 . The power supply unit for an aerosol generating device according to  claim 7 , further comprising:
 a circuit substrate, wherein   a power conversion unit configured to convert electric power supplied from the power supply and a control unit configured to control the heater unit based on the temperature detected by the temperature detection unit are mounted on the circuit substrate,   the first conductive track is connected to the power conversion unit via the flexible wiring board, and   the second conductive track is connected to the control unit via the flexible wiring board.   
     
     
         9 . An aerosol generating device comprising:
 the power supply unit according to  claim 1 ;   a first cartridge storing the aerosol source; and   a second cartridge storing the flavor source.   
     
     
         10 . A film heater including a pair of electrically insulating bases and a conductive foil disposed between the pair of electrically insulating bases, the film heater comprising:
 a heater unit; and   a mounting portion on which a temperature detection unit configured to detect a temperature of the heater unit is mounted, wherein   a first conductive track and a second conductive track are formed in the conductive foil, the first conductive track being provided on the heater unit, and the second conductive track being provided on the mounting portion and connected to the temperature detection unit.   
     
     
         11 . The film heater according to  claim 10 , wherein
 a reinforcing plate is provided on the mounting portion.   
     
     
         12 . The film heater according to  claim 10 , wherein
 the film heater is formed integrally with a flexible wiring board connected to the heater unit and the mounting portion, and   the heater unit and the mounting portion are disposed on opposite sides of the flexible wiring board.