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CN-122003186-A - Aerosol generating device with ultrasonic atomizer

CN122003186ACN 122003186 ACN122003186 ACN 122003186ACN-122003186-A

Abstract

The present invention relates to an aerosol-generating device comprising a chamber for receiving an aerosol-forming substrate. The aerosol-generating device may further comprise a heating element configured for heating the aerosol-forming substrate received in the cavity for generating the inhalable aerosol. The aerosol-generating device may further comprise an ultrasonic atomizer. The ultrasonic atomizer may be configured to atomize excess water in the aerosol-forming substrate. The aerosol-generating device may further comprise a controller. The controller may be configured to control a heating operation of the heating element. The controller may be configured to control an excess water removal operation of the ultrasonic atomizer. The controller may be configured to perform an excess water removal operation of the ultrasonic atomizer prior to a heating operation of the heating element. The invention also relates to a method of removing excess water from an aerosol-forming substrate in an aerosol-generating device.

Inventors

  • M. Bologna

Assignees

  • 菲利普莫里斯生产公司

Dates

Publication Date
20260508
Application Date
20241028
Priority Date
20231102

Claims (14)

  1. 1. An aerosol-generating device comprising: a cavity for receiving an aerosol-forming substrate, A heating element configured for heating the aerosol-forming substrate received in the cavity for generating an inhalable aerosol, An ultrasonic atomizer, wherein the ultrasonic atomizer is configured to atomize excess water in the aerosol-forming substrate, and The controller is used for controlling the operation of the controller, Wherein the controller is configured to control a heating operation of the heating element, wherein the controller is configured to control an excess water removal operation of the ultrasonic atomizer, and wherein the controller is configured to perform the excess water removal operation of the ultrasonic atomizer prior to the heating operation of the heating element.
  2. 2. An aerosol-generating device according to claim 1, wherein the ultrasonic atomizer comprises a piezoelectric element, preferably configured as a piezoelectric element.
  3. 3. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer comprises an ultrasonic element, preferably configured as an ultrasonic element.
  4. 4. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer is disc-shaped or cylindrical.
  5. 5. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer is arranged at least partially around the cavity.
  6. 6. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer is arranged adjacent to a distal end of the lumen.
  7. 7. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer is fluid permeable.
  8. 8. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer comprises a perforated mesh disc.
  9. 9. An aerosol-generating device according to any of the preceding claims, wherein the aerosol-generating device further comprises an air flow channel upstream of and fluidly connected to the cavity.
  10. 10. An aerosol-generating device according to claim 9, wherein the ultrasonic atomizer is arranged to direct atomized excess water from the aerosol-forming substrate into an upstream airflow channel.
  11. 11. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer comprises a central aperture along a longitudinal central axis of the cavity.
  12. 12. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer comprises a plurality of perforations parallel to a longitudinal central axis of the cavity.
  13. 13. An aerosol-generating device according to any of the preceding claims, wherein the ultrasonic atomizer is arranged to contact the aerosol-forming substrate when the aerosol-forming substrate is received in the cavity, in particular wherein the ultrasonic atomizer is arranged to contact a distal face of the aerosol-forming substrate.
  14. 14. A method of removing excess water from an aerosol-forming substrate in an aerosol-generating device according to any of the preceding claims, comprising: in an excess water removal operation of the ultrasonic atomizer, operating the ultrasonic of the atomizer via the controller, -Subsequently operating a heating operation of the heating element via the controller.

Description

Aerosol generating device with ultrasonic atomizer Technical Field The present invention relates to an aerosol-generating device. The invention also relates to a method of removing excess water from an aerosol-forming substrate in an aerosol-generating device. Background It is known to provide an aerosol-generating device for generating inhalable vapour. Such devices may heat the aerosol-forming substrate to a temperature that volatilizes one or more components of the aerosol-forming substrate without combusting the aerosol-forming substrate. The aerosol-forming substrate may be provided as part of an aerosol-generating article. The aerosol-generating article may have a strip shape for inserting the aerosol-generating article into a cavity (such as a heating chamber) of an aerosol-generating device. The heating element may be arranged in or around the heating chamber for heating the aerosol-forming substrate upon insertion of the aerosol-generating article into the heating chamber of the aerosol-generating device. In humid climates, undesirable hot aerosol effects may occur in the first puffs of the consumer. In more detail, the aerosol-forming substrate of the aerosol-generating article may comprise excess water due to humid conditions. This excess water may be vaporised by the heating element of the aerosol-generating device prior to the first puff by the user. In the first puff, the user may inhale this vaporized excess water. This may create undesirable hot aerosol effects in the first puff. Disclosure of Invention It is desirable to have an aerosol-generating device that reduces or prevents the hot aerosol effect. It is desirable to have a method of reducing or preventing the hot aerosol effect. According to an embodiment of the present invention, an aerosol-generating device may be provided comprising a chamber for receiving an aerosol-forming substrate. The aerosol-generating device may further comprise a heating element configured for heating the aerosol-forming substrate received in the cavity for generating the inhalable aerosol. The aerosol-generating device may further comprise an ultrasonic atomizer. The ultrasonic atomizer may be configured to atomize excess water in the aerosol-forming substrate. The aerosol-generating device may further comprise a controller. The controller may be configured to control a heating operation of the heating element. The controller may be configured to control an excess water removal operation of the ultrasonic atomizer. The controller may be configured to perform an excess water removal operation of the ultrasonic atomizer prior to a heating operation of the heating element. According to an embodiment of the invention, an aerosol-generating device is provided comprising a chamber for receiving an aerosol-forming substrate. The aerosol-generating device further comprises a heating element configured for heating the aerosol-forming substrate received in the cavity for generating an inhalable aerosol. The aerosol-generating device further comprises an ultrasonic atomizer. The ultrasonic atomizer is configured to atomize excess water in the aerosol-forming substrate. The aerosol-generating device further comprises a controller. The controller is configured to control a heating operation of the heating element. The controller is configured to control an excess water removal operation of the ultrasonic atomizer. The controller is configured to perform an excess water removal operation of the ultrasonic atomizer prior to a heating operation of the heating element. Providing an ultrasonic atomizer and operating the ultrasonic operator by means of a controller in an excess water removal operation enables removal of excess water from the aerosol-forming substrate. Removal of excess water from the aerosol-forming substrate may prevent undesirable hot aerosol effects in the case of hot or humid climates. Performing the excess water removal operation prior to the heating operation of the heating element removes excess water prior to the user experience. In particular, aerosol-forming substrates may have a relatively high moisture content in a humid/hot environment. This relatively high moisture content may cause vaporization of a relatively large amount of these moisture during the pre-heating stage of the aerosol-generating device. Because of the relatively large amount of vaporized water inhaled, the first suction of the user may thus be affected unpleasant. This may be referred to as the hot aerosol effect. The excess water removal operation is preferably performed during a pre-heating mode of the aerosol-generating device. In any case, the excess water removal operation is preferably performed prior to the normal use process of the aerosol-generating device. The conventional use process may begin with a heating operation, i.e. the controller initiates heating of the heating element to heat the aerosol-forming substrate, thereby vaporising the aerosol-forming substrate fo