Aerosol generating apparatus

Abstract

This application provides an aerosol generating apparatus. The aerosol generating apparatus includes: a chamber, configured to receive an aerosol generation product: a heater, configured to heat the aerosol generation product, where the heater includes a resistive heating element, the resistive heating element has at least two resistive heating layers formed by a sheet including a resistive metal or alloy wound or folded up. In the foregoing aerosol generating apparatus, the resistive heating element of the heater is formed by the sheet wound or folded up. This is more convenient than production of a spiral heating wire by winding a wire.

1 . An aerosol generating apparatus, configured to heat an aerosol generation product to generate aerosols, and comprising:
 a chamber, configured to receive the aerosol generation product; and   a heater, configured to heat the aerosol generation product, wherein the heater comprises a resistive heating element, the resistive heating element has at least two resistive heating layers formed by a sheet comprising a resistive metal or alloy wound or folded up.   
     
     
         2 . The aerosol generating apparatus according to  claim 1 , wherein the sheet comprises a foil layer made of the resistive metal or alloy. 
     
     
         3 . The aerosol generating apparatus according to  claim 2 , wherein the sheet further comprises:
 a stress compensation layer, configured to provide stress compensation during the winding or folding of the sheet, to prevent cracking or breakage of the foil layer made of the resistive metal or alloy.   
     
     
         4 . The aerosol generating apparatus according to  claim 2 , wherein the foil layer made of the resistive metal or alloy has a thickness of 0.5 μm to 200 μm. 
     
     
         5 . The aerosol generating apparatus according to any one  claim 1 , wherein
 the resistive heating layer is configured to generate heat due to Joule heat generated when a direct current flows through the resistive heating layer; or   the heater further comprises: an insulating laver, formed between two adjacent resistive heating lavers to provide insulation between the two adjacent resistive heating lavers: or   the sheet is continuous; or   the at least two resistive heating layers are connected in series; or   the resistive heating element is formed by the sheet wound or folded on a rigid base.   
     
     
         6 .- 10 . (canceled) 
     
     
         11 . The aerosol generating apparatus according to  claim 1 , wherein the heater further comprises: a first wire and a second wire, configured to supply power to the resistive heating element. 
     
     
         12 . The aerosol generating apparatus according to  claim 11 , wherein the resistive heating element is formed by the sheet wound around the first wire, which serves as an axis; and the first wire has a larger diameter than the second wire; or
 the first wire has a diameter of 0.5 mm to 1.5 mm; or   the resistive heating element is of a cylindrical shape formed by winding the sheet; and the first wire is at least partially inside the resistive heating element, and the second wire is located outside the resistive heating element.   
     
     
         13 .- 16 . (canceled) 
     
     
         17 . The aerosol generating apparatus according to  claim 1 , wherein the resistive heating element comprises a plurality of resistive conductor paths formed on the at least two resistive heating layers. 
     
     
         18 . The aerosol generating apparatus according to  claim 17 , wherein the plurality of resistive conductor paths are defined by at least one of holes, slits, or hollows formed in the at least two resistive heating layers; or wherein the plurality of resistive conductor paths are connected in series or in parallel. 
     
     
         19 . (canceled) 
     
     
         20 . The aerosol generating apparatus according to  claim 1 , wherein the heater further comprises: a housing, extending at least partially in the chamber and configured to be inserted into the aerosol generation product; and the resistive heating element is accommodated or held in the housing. 
     
     
         21 . The aerosol generating apparatus according to  claim 20 , wherein the heater comprises: a first wire and a second wire, configured to supply power to the resistive heating element; and
 the housing has a slot extending in a length direction, the first wire is at least partially located in the housing, and the second wire is at least partially held in the slot.   
     
     
         22 . The aerosol generating apparatus according to  claim 1 , wherein the heater is constructed to be in a shape of a sheet extending at least partially in the chamber; and
 the at least two resistive heating layers are spaced apart from each other in a thickness direction of the heater.   
     
     
         23 . The aerosol generating apparatus according to  claim 22 , wherein the resistive heating element further comprises:
 a connecting part, extending between two adjacent resistive heating layers in the thickness direction of the heater to provide an electrical connection between the two adjacent resistive heating layers.   
     
     
         24 . The aerosol generating apparatus according to  claim 22 , wherein the connecting part is located on at least one side of the heater in a width direction. 
     
     
         25 . The aerosol generating apparatus according to  claim 1 , wherein the sheet is provided with a plurality of holes, hollows, or slits, to cause the sheet to form a grid pattern. 
     
     
         26 . The aerosol generating apparatus according to  claim 1 , wherein the heater further comprises:
 a temperature sensor, configured to sense a temperature of the resistive heating element;   wherein the heater is constructed to be in a shape of a sheet extending at least partially in the chamber; and the heater has a slit or a hollow extending through the heater in a thickness direction, and the temperature sensor is accommodated in the slit or the hollow.   
     
     
         27 . (canceled) 
     
     
         28 . The aerosol generating apparatus according to  claim 1 , wherein the heater is constructed to be in a shape of a sheet extending at least partially in the chamber; and
 the resistive heating element is formed by the sheet folded in opposite directions alternately in a width direction of the heater.   
     
     
         29 . The aerosol generating apparatus according to  claim 1 , wherein resistance of the resistive heating element ranges from 0.1Ω to 5.0Ω. 
     
     
         30 . An aerosol generating apparatus, configured to heat an aerosol generation product to generate aerosols, and comprising: a heater, configured to heat the aerosol generation product, wherein
 the heater comprises a resistive heating element, the resistive heating element has at least two resistive heating layers formed by a sheet comprising a resistive metal or alloy wound or folded up, and the at least two resistive heating layers define a plurality of resistive conductor paths that extend forward and backward alternately in a length direction or a width direction of the resistive heating element.   
     
     
         31 . An aerosol generating apparatus, configured to heat an aerosol generation product to generate aerosols, and comprising:
 a chamber, configured to receive the aerosol generation product;   a magnetic field generator, configured to generate a changing magnetic field; and   a heater, configured to heat the aerosol generation product, wherein the heater comprises an induction heating element that is penetrated by the changing magnetic field to generate heat, and the induction heating element has at least two induction heating layers formed by a sheet comprising an inductive metal or alloy wound or folded up.