Aerosol generating device with a sealed chamber for accommodating a battery
The present invention relates to an aerosol generating device for delivering aerosol upon heating a liquid contained in the device including: an outside casing comprising a battery and a receiving cavity extending in an axial direction of the device; the receiving cavity being arranged for receiving a cartomizer at a first end of the device and supplying electrical power to the cartomizer, an internal frame for holding the battery in the outside casing, at least one electronic circuit board (PCBA), wherein the aerosol generating device further includes a sealed compartment in a region of the outside casing containing the battery; the sealed compartment being sealed by a leak-tight and pressure resistant sealing arrangement isolating the battery from the receiving cavity and from the at least one electronic circuit board.
1 . An aerosol generating device for delivering aerosol upon heating a liquid comprising:
an outside casing comprising a battery and a receiving cavity on a first side of the battery and extending in an axial direction of the device; the receiving cavity being arranged for receiving a cartomizer at a first end of the device and supplying electrical power to the cartomizer,
an internal frame for holding the battery in the outside casing, and
at least one electronic circuit board on a second side of the battery in the axial direction of the device,
wherein the device comprises a sealed compartment in a region of the outside casing containing the battery; the sealed compartment being sealed by a leak-tight and pressure resistant sealing arrangement isolating the battery from the receiving cavity on the first side and from the at least one electronic circuit board on the second side.
2 . The aerosol generating device according to claim 1 , wherein the sealing arrangement is at least partially formed by a front bulkhead and a rear bulkhead longitudinally distant relative to the axial direction and extending transversally in the outside casing and sealingly engaged against an inner surface of the outside casing.
3 . The aerosol generating device according to claim 2 , wherein the front and/or rear bulkhead is part of or attached to the internal frame.
4 . The aerosol generating device according to claim 2 , wherein the front and/or rear bulkhead comprises circumferential soft seals in sealing engagement against the outside casing.
5 . The aerosol generating device according to claim 2 , wherein the rear bulkhead separates the sealed compartment of the battery from the at least one electronic circuit board.
6 . The aerosol generating device according to claim 2 , wherein the front bulkhead forms a bottom of the receiving cavity for the cartomizer with electrical pins electrically connected to the battery via a second electronic circuit board.
7 . The aerosol generating device according to claim 6 , wherein the second electronic circuit board and the at least one electronic circuit board are connected by a flexible printed circuit traversing the sealed compartment.
8 . The aerosol generating device according to claim 2 , wherein the battery is mounted at least in the axial direction of the device in the sealed compartment.
9 . The aerosol generating device according to claim 8 , wherein the battery is mounted in the sealed compartment between first and second foam pads.
10 . The aerosol generating device according to claim 9 , wherein the first and/or second foam pads is/are positioned between the battery and the front and/or rear bulkhead, respectively.
11 . The aerosol generating device according to claim 1 , wherein the sealed compartment comprises a pressure relief member configured to open the sealed compartment when excessive pressure builds inside the sealed compartment.
12 . The aerosol generating device according to claim 11 , wherein said pressure relief member is configured to create an opening in an opening direction different from the axial direction of the device.
13 . The aerosol generating device according to claim 12 , wherein the opening direction is substantially transverse to the axial direction of the device.
14 . The aerosol generating device according to claim 1 , wherein the sealed compartment contains a liquid absorbing material.
15 . The aerosol generating device according to claim 1 , wherein the sealing arrangement includes silicone rubber.
16 . The aerosol generating device according to claim 1 , wherein the outside casing is formed of a rigid material.
17 . The aerosol generating device according to claim 5 , wherein the at least one electronic circuit board is a main electronic circuit board.
18 . The aerosol generating device according to claim 2 , wherein the front bulkhead and/or the rear bulkhead comprises silicone rubber.
19 . The aerosol generating device according to claim 1 , wherein the outside casing comprises a rigid thermoplastic material, glass or metal.