Heating Assembly, Aerosol-generating Device and A Method for Heating An Aerosol-forming Substrate

Content Provider	The Lens
Abstract	The present invention relates to a heating assembly (10) of an aerosol-generating device for heating aerosol-forming substrate. The heating assembly comprises a chemical heating device (200) configured to generate primary heat by an exothermic chemical reaction and to supply the primary heat to an aerosol-forming substrate for heating the substrate. The heating assembly further comprises an electrical heating device (100) configured to electrically generate and supply secondary heat to the aerosol-forming substrate for heating the substrate. The invention further relates to an aerosol-generating device including such a heating assembly. A method for generating an aerosol by heating aerosol-forming substrate comprises at least one of a sequential or a parallel performance of the following steps: generating primary heat by an exothermic chemical reaction and supplying the primary heat to the aerosol-forming substrate for heating the substrate; and electrically generating secondary heat and supplying the secondary heat to the aerosol-forming substrate for further heating the substrate.
Related Links	https://www.lens.org/lens/patent/010-982-081-658-574/frontpage
Language	English
Publisher Date	2019-09-05
Access Restriction	Open
Content Type	Text
Resource Type	Patent
Jurisdiction	United States of America
Date Applied	2017-11-17
Applicant	Philip Morris Products Sa
Application No.	201716348593
Claim	A heating assembly of an aerosol-generating device for heating aerosol-forming substrate, the heating assembly comprising: a chemical heating device configured to generate primary heat by an exothermic chemical reaction and to supply the primary heat to an aerosol-forming substrate for heating the substrate, an electrical heating device configured to electrically generate and supply secondary heat to the aerosol-forming substrate for heating the substrate, and a controller operatively connected at least to the electrical heating device for controlling the temperature of the aerosol-forming substrate. The heating assembly according to claim 1 , wherein the heating assembly is configured for at least one of: parallel heating of the aerosol-forming substrate by using the chemical heating device and the electrical heating device in combination; sequential heating of the aerosol-forming substrate using the chemical heating device and the electrical heating device sequentially. The heating assembly according to anyone of claim 1 , wherein the chemical heating device is configured for heating the substrate to a pre-target temperature, and the electrical heating device is configured for further heating the substrate to a target temperature above the pre-target temperature in addition to the chemical heating device. The heating assembly according to claim 1 , wherein the chemical heating device comprises a reaction chamber for executing the exothermic chemical reaction and a heat transfer element for transferring primary heat out of the reaction chamber. The heating assembly according to claim 1 , wherein the heating assembly comprises a controllable supply system for supplying at least one reactant to the exothermic chemical reaction and for controlling the generation of primary heat. The heating assembly according to claim 1 , wherein the electrical heating device comprises a resistive heating element. The heating assembly according to claim 1 , further comprising an energy converting device for converting heat generated by the chemical heating device into electrical power. The heating assembly according to claim 7 , wherein the energy converting device is operatively connected to the electrical heating device for supplying the electrical heating device with converted electrical power. An aerosol-generating device comprising a heating assembly according to claim 1 . A method for generating an aerosol by heating an aerosol-forming substrate, the method comprising at least one of a sequential or a parallel performance of the following steps: generating primary heat by an exothermic chemical reaction and supplying the primary heat to the aerosol-forming substrate for heating the substrate; electrically generating secondary heat and supplying the secondary heat to the aerosol-forming substrate for heating the substrate; and adjusting the temperature of the aerosol-forming substrate to a target temperature by controlling at least the generation of secondary heat. The method according to claim 10 , wherein the primary heat and the secondary heat are used for heating the aerosol-forming substrate during different phases of generating an aeroso The method according to claim 10 , wherein the primary heat is used for heating the aerosol-forming substrate to a pre-target temperature and wherein the secondary heat is used in addition to the primary heat for further heating the aerosol-forming substrate to the target temperature above the pre-target temperature. The method according to anyone of claim 10 , further comprising the step of converting heat from the exothermic chemical reaction into electrical power and providing the converted electrical power for electrically generating secondary heat.
CPC Classification	SMOKERS' REQUISITES;MATCH BOXES;SIMULATED SMOKING DEVICES ELECTRIC HEATING;ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR;CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES; IN GENERAL Devices For Introducing Media Into; Or Onto; The Body ;Devices For Transducing Body Media Or For Taking Media From The Body ;Devices For Producing Or Ending Sleep Or Stupor
Extended Family	182-641-643-582-13X 125-075-126-743-74X 177-531-192-865-131 057-024-398-510-857 096-314-030-093-880 158-571-860-292-250 012-790-456-269-193 138-161-174-032-902 181-059-406-474-792 113-820-040-258-323 181-319-046-015-821 010-982-081-658-574 042-751-911-940-433 132-071-388-367-532 015-513-322-870-120 030-387-133-564-369 050-467-989-106-248
Patent ID	20190269174
Inventor/Author	Robert Jacques Vollmer Jean-yves Bessant Michel
IPC	A24F40/20 A24F40/46 A24F40/50 A24F42/10 H05B3/04 H05B3/44
Status	Active
Owner	Philip Morris Products S.a
Simple Family	182-641-643-582-13X 125-075-126-743-74X 177-531-192-865-131 057-024-398-510-857 096-314-030-093-880 158-571-860-292-250 012-790-456-269-193 138-161-174-032-902 181-059-406-474-792 113-820-040-258-323 181-319-046-015-821 010-982-081-658-574 042-751-911-940-433 132-071-388-367-532 015-513-322-870-120 030-387-133-564-369 050-467-989-106-248
CPC (with Group)	A24F40/46 A24F40/00 A24F40/20 A24F40/50 A24F40/57 A24F42/10 H05B3/04 H05B3/44 H05B2203/021 H05B2203/022 A61M15/06 H05B11/00
Issuing Authority	United States Patent and Trademark Office (USPTO)
Kind	Patent Application Publication