HEATING BLOCK WITH HEATER MOUNT

Claims

1. A heating unit for an aerosol generating device comprising a tubular heating chamber for heating an aerosol-forming substrate, the tubular heating chamber comprising a proximal flared end; and a heater body located around the heating chamber, wherein the heater body comprises a near wall, wherein the near wall comprises a circular groove extending in a near direction from the inner surface of the near wall, wherein the circular groove comprises a beveled inner side wall, wherein the beveled inner side wall and the near expanding end of the tubular heating chamber have corresponding shapes, and wherein the near expanding end of the tubular heating chamber is installed in the circular groove of the near wall.

2. The heating unit according to item 1, characterized in that the beveled inner side wall of the heater housing expands in the near direction.

3. A heating unit according to any one of the preceding claims, characterized in that the tubular heating chamber comprises a distal flared end, and preferably the heating unit further comprises a heater mount, and wherein the distal flared end of the tubular heating chamber is mounted in the heater mount.

4. The heating unit of claim 3, further comprising a heater mount, and wherein the distal flared end of the tubular heating chamber is mounted in the heater mount, wherein the heater mount comprises at its near end an additional circumferential groove extending in a distal direction from an inner near surface of the heater mount, wherein the circumferential groove comprises a beveled inner side wall, wherein the beveled inner side wall expands in a distal direction, wherein the beveled inner side wall and the distal flared end of the tubular heating chamber have corresponding shapes, and wherein the distal flared end of the tubular heating chamber is mounted in the circumferential groove of the heater mount.

5. A heating block according to any one of the preceding claims, characterized in that one or both of the beveled inner side wall of the near wall and the beveled inner side wall of the heater mount comprise at least one rib, preferably three ribs.

6. A heating unit according to any of the preceding claims, characterized in that the beveled inner side wall of the heater housing has the same bevel angle as the near flared end of the tubular heating chamber.

7. The heating unit according to claim 6, characterized in that the near expanding end of the tubular heating chamber and the beveled inner side wall of the heater body have a bevel angle of 20° to 45°, preferably from 25° to 40°, more preferably about 30°.

8. A heating unit according to any one of the preceding claims, characterized in that the length of the near flared end of the tubular heating chamber and the beveled inner side wall of the heater housing is from 0.5 to 5 millimeters, preferably from 0.5 to 3 millimeters, more preferably from 0.5 to 2 millimeters and most preferably about 1 millimeter.

9. A heating unit according to any of the preceding paragraphs, characterized in that the heater body comprises a near heater body and a far heater body, and wherein the near heater body comprises a near wall with a circular groove.

10. The heating unit of claim 9, wherein the tubular heating chamber comprises a distal flaring end, wherein the heating unit further comprises a heater mount, and wherein the distal flaring end of the tubular heating chamber is mounted in the heater mount, wherein the distal heater body comprises the heater mount, or wherein the heater mount is mounted in a distal opening of the distal heater body.

11. The heating block according to item 10, characterized in that the tubular heating chamber is located between the nearest heater body and the heater mount in a “sandwich” configuration or is pressed into them.

12. A heating unit according to any one of paragraphs 10 or 11, characterized in that the heater mount is installed in the distant opening of the distant heater housing, and wherein a seal is installed between the heater mount and the inner surface of the distant heater housing.

13. The heating unit of claim 12, wherein one or both of the beveled inner side wall of the near wall and the beveled inner side wall of the heater mount comprise at least one rib according to claim 5, preferably three ribs, and wherein the near heater body, the far heater body, the tubular heating chamber, the heater mount and the seal enclose an air space, wherein preferably the air space is an airtight space, more preferably said airtight space is hollow.

14. An aerosol generating device comprising a heating unit according to any of the preceding claims.

15. An aerosol generating system comprising an aerosol generating device according to claim 14 and an aerosol generating article comprising a substrate portion comprising an aerosol forming substrate, wherein the aerosol generating article is configured to be at least partially inserted into a tubular heating chamber.