Aerosol generator equipped with a susceptor having angled perforations.

Abstract

The present invention relates to an aerosol generator (102) comprising a first cavity (106) configured to receive a first aerosol-forming substrate. The device comprises a first airflow channel (110). The device comprises a heating arrangement comprising at least a first heating element (122). The first heating element comprises at least two or more first perforations (154). Each of the first perforations extends along the first perforation direction. The first perforation direction is angled with respect to the longitudinal axis of the first heating element. The first heating element is disposed between the first cavity and the first airflow channel. The heating element is disposed in contact with the first cavity and the first airflow channel. The first perforations are configured to fluidly connect the first cavity to the first airflow channel.

Description

Technical Field

[0001] The present invention relates to an aerosol generating device and an aerosol generating system.

Background Art

[0002] It is known to provide an aerosol generating device for generating an inhalable vapor. Such a device may heat the aerosol-forming substrate to a temperature at which one or more components of the aerosol-forming substrate volatilize without burning 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 rod shape for insertion of the aerosol-generating article into a cavity (such as a heating chamber) of the aerosol-generating device. The heating element may be disposed in or around a heating chamber for heating the aerosol-forming substrate once the aerosol-generating article is inserted into the heating chamber of the aerosol-generating device.

Summary of the Invention

Problems to be Solved by the Invention

[0003] It is desirable to provide an aerosol generating system having improved heating efficiency. It is desirable to provide an aerosol generating system that promotes improved aerosol generation. It is desirable to provide an aerosol generating system having improved air flow through the system. It is desirable to provide an aerosol generating system having improved aerosol delivery. It is desirable to provide an aerosol generating system that can be manufactured more efficiently. It is desirable to provide an aerosol generating device for use with a plurality of aerosol-forming substrates.

Brief Description of the Drawings

[0004] [Figure 1] FIG. 1 shows an aerosol generating system of the present invention. [Figure 2] FIG. 2 shows a stacked view of components of the aerosol generating system of the present invention. [Figure 3] Figure 3 shows a modular embodiment of the aerosol generator of the present invention. [Figure 4] Figure 4 shows an enlarged view of the intermediate section of Figure 3. [Figure 5] Figure 5 shows one embodiment of the aerosol generation system of the present invention using a resistance heating arrangement. [Figure 6] Figure 6 shows one embodiment of the aerosol generation system of the present invention using induction heating. [Figure 7] Figure 7 shows an embodiment of the aerosol generation system of the present invention using induction heating. [Figure 8] Figure 8 shows a magnified view of the aerosol generator. [Figure 9] Figure 9 shows an aerosol-generating article and a heating element having rounded edges and a rounded downstream end. [Modes for carrying out the invention]

[0005] According to a first aspect of the present invention, an aerosol generating device is provided. The device comprises a first cavity configured to receive a first aerosol forming substrate. The device comprises a first airflow channel. The device comprises a heating arrangement comprising at least a first heating element. The first heating element comprises at least two or more first perforations. Each of the first perforations extends along the first perforation direction. The first perforation direction is angled with respect to the longitudinal axis of the first heating element. The first heating element is disposed between the first cavity and the first airflow channel. The heating element is disposed in contact with the first cavity and the first airflow channel. The first perforations are configured to fluidly connect the first cavity to the first airflow channel.

[0006] According to one embodiment of the present invention, an aerosol generator is provided. The device may comprise a first cavity configured to receive a first aerosol-forming substrate. The device may comprise a first airflow channel. The device may comprise a heating arrangement comprising at least a first heating element. The first heating element may comprise at least two or more first perforations. Each of the first perforations may extend along the first perforation direction. The first perforation direction may be angled with respect to the longitudinal axis of the first heating element. The first heating element may be disposed between the first cavity and the first airflow channel. The heating element may be disposed in contact with the first cavity and the first airflow channel. The first perforations may be configured to fluidly connect the first cavity to the first airflow channel.

[0007] The first heating element may be arranged parallel to the first cavity. The first heating element may line at least a portion of the first cavity. The first heating element may be in thermal contact with the first cavity. The first heating element may be arranged parallel to the first airflow channel. The first heating element may line at least a portion of the first airflow channel. The first heating element may be arranged parallel to the first cavity and the first airflow channel. The first cavity and the airflow channel may sandwich the first heating element.

[0008] The first heating element may be configured to heat a first aerosol-forming substrate inserted into the first cavity. The first aerosol-forming substrate may be part of the first aerosol-generating article. The first cavity may be configured to receive the first aerosol-generating article. The first heating element may be configured to heat the first aerosol-forming substrate of the first aerosol-generating article inserted into the first cavity.

[0009] The first cavity may be located radially outward of the first heating element. Alternatively, the first heating element may be located radially outward of the first cavity. The first heating element may be located radially outward of the first airflow channel. Alternatively, the first airflow channel may be located radially outward of the first heating element.

[0010] The first cavity may be cubic in shape. The first cavity may have a rectangular cross-section. The first cavity may be planar. The first cavity may be flat. The first cavity may be configured to closely match the shape of the first aerosol-forming substrate. The first cavity may be configured to closely match the shape of the first aerosol-generating article. The first cavity may be configured to slidably receive the first aerosol-forming substrate. The first cavity may be configured to slidably receive the first aerosol-generating article.

[0011] The first heating element may be conical in shape. The first heating element may have a rectangular cross-section. The first heating element may be planar. The first heating element may be flat. The first heating element may be a sheet. The first heating element may be a perforated sheet.

[0012] The first airflow channel may be cubic in shape. The first airflow channel may have a rectangular cross-section. The first airflow channel may be planar. The first airflow channel may be flat.

[0013] Each of the two or more first boreholes may be configured to fluidly connect the first cavity to the first airflow channel.

[0014] The aerosol generator may heat the aerosol-forming substrate with improved efficiency. The aerosol generator may provide improved airflow. The aerosol generator may provide improved aerosol flow. The aerosol generator may provide improved draw resistance (RTD). The aerosol generator may provide improved aerosol generation. The aerosol generator may provide an improved user experience. The aerosol generator may provide improved airflow characteristics. The aerosol generator may provide improved mixing of ambient air and volatilized aerosol-forming substrate. The aerosol generator may provide improved homogeneity of the aerosol. The aerosol generator may provide improved aerosol delivery.

[0015] The longitudinal axis of the first heating element may be arranged parallel to the longitudinal axis of the aerosol generator.

[0016] The first drilling direction may be angled by 30° to 150° with respect to the longitudinal axis of the first heating element.

[0017] The first drilling direction may preferably be angled with respect to the long axis of the first heating element by 30° to less than 90°, or by more than 90° to 150°.

[0018] The first drilling direction may be defined by the angle between the longitudinal axis of the first heating element and the first drilling direction.

[0019] The angle between the longitudinal axis of the first heating element and the direction of the first drilling may be between 30° and 150°. The angular direction may depend on the direction of the airflow through the first airflow channel. The angular direction may be clockwise or counterclockwise. The angular direction may depend on the direction of the airflow through the first airflow channel. The net airflow through the first airflow channel may extend from the upstream end of the first airflow channel to the downstream end of the first airflow channel.

[0020] The angle between the long-axis direction axis of the first heating element and the first perforation direction is preferably 30° to less than 90°, or more than 90° to 150°.

[0021] The first perforation direction may be partially oriented downstream. The first perforation direction may be partially oriented upstream. The first perforation direction may be partially oriented in the direction of the airflow passing through the first airflow channel. The first perforation direction may be partially oriented in the direction opposite to the direction of the airflow passing through the first airflow channel. The first perforation direction may be partially oriented in the net direction of the airflow passing through the first airflow channel. The first perforation direction may be partially oriented in the direction opposite to the net direction of the airflow passing through the first airflow channel.

[0022] The first perforation direction in which the angle between the long-axis direction axis of the first heating element and the first perforation direction is less than 90° may be partially oriented upstream. The component of the first perforation direction in which the angle between the long-axis direction axis of the first heating element and the first perforation direction is less than 90° may be oriented upstream. The component of the first perforation direction in which the angle between the long-axis direction axis of the first heating element and the first perforation direction is less than 90° may be oriented in the direction opposite to the net direction of the airflow passing through the first airflow channel.

[0023] Each of the two or more first perforations may have an outlet that abuts against the first airflow channel. Each of the two or more first perforations may have an inlet that abuts against the first cavity. When the angle between the long-axis direction axis of the first heating element and the first perforation direction is less than 90°, the outlets of the two or more first perforations may be at least partially offset toward the upstream end of the first airflow channel with respect to the corresponding inlets of the two or more first perforations.

[0024] The first drilling direction, where the angle between the longitudinal axis of the first heating element and the first drilling direction exceeds 90°, may be partially oriented downstream. Components of the first drilling direction, where the angle between the longitudinal axis of the first heating element and the first drilling direction exceeds 90°, may be oriented downstream. Components of the first drilling direction, where the angle between the longitudinal axis of the first heating element and the first drilling direction exceeds 90°, may be oriented in the same direction as the net direction of the airflow through the first airflow channel.

[0025] When the angle between the longitudinal axis of the first heating element and the direction of the first drilling exceeds 90°, the outlets of two or more first drillings may be at least partially offset toward the downstream end of the first airflow channel with respect to the corresponding inlets of the two or more first drillings.

[0026] The first drilling direction, where the angle between the longitudinal axis of the first heating element and the first drilling direction is 90°, may be perpendicular to the net airflow direction through the first airflow channel. The first drilling direction, where the angle between the longitudinal axis of the first heating element and the first drilling direction is 90°, may be perpendicular to the longitudinal axis of the first airflow channel.

[0027] The first heating element may have at least two or more second perforations. The second perforations may extend along the direction of the second perforations. The direction of the second perforations may be angled with respect to the longitudinal axis of the first heating element. The second perforations may be configured to fluidly connect the first cavity to an airflow channel.

[0028] Each of the two or more second boreholes may be configured to fluidly connect the first cavity to the first airflow channel.

[0029] Each of the two or more second holes may extend along the direction of the second hole.

[0030] The second drilling direction may be angled by 30° to 150° with respect to the long axis of the first heating element.

[0031] Preferably, the second drilling direction may be angled with respect to the longitudinal axis of the first heating element by 30° to less than 90°, or by more than 90° to 150°.

[0032] The second drilling direction may be defined by the angle between the longitudinal axis of the first heating element and the second drilling direction.

[0033] The angle between the longitudinal axis of the first heating element and the direction of the second drilling may be between 30° and 150°. The angular direction may depend on the direction of the airflow through the first airflow channel. The angular direction may be clockwise or counterclockwise. The angular direction may depend on the net direction of the airflow through the first airflow channel. The net airflow through the first airflow channel may extend from the upstream end of the first airflow channel to the downstream end of the first airflow channel.

[0034] The angle between the longitudinal axis of the first heating element and the direction of the second drilling is preferably 30° to less than 90°, or greater than 90° to 150°.

[0035] The second drilling direction may be partially directed downstream. The second drilling direction may be partially directed upstream. The second drilling direction may be partially directed in the direction of the airflow through the first airflow channel. The second drilling direction may be partially directed in the opposite direction to the airflow through the first airflow channel. The second drilling direction may be partially directed in the net direction of the airflow through the first airflow channel. The second drilling direction may be partially directed in the opposite direction to the net direction of the airflow through the first airflow channel.

[0036] A second drilling direction in which the angle between the longitudinal axis of the first heating element and the second drilling direction is less than 90° may be partially oriented upstream. Components of the second drilling direction in which the angle between the longitudinal axis of the first heating element and the second drilling direction is less than 90° may be oriented upstream. Components of the second drilling direction in which the angle between the longitudinal axis of the first heating element and the second drilling direction is less than 90° may be oriented in the direction opposite to the net direction of the airflow through the first airflow channel.

[0037] Each of the two or more second perforations may have an outlet that abuts the first airflow channel. Each of the two or more second perforations may have an inlet that abuts the first cavity. When the angle between the longitudinal axis of the first heating element and the direction of the second perforation is less than 90°, the outlets of the two or more second perforations may be at least partially offset toward the upstream end of the first airflow channel with respect to the corresponding inlets of the two or more second perforations.

[0038] The second drilling direction, where the angle between the longitudinal axis of the first heating element and the second drilling direction exceeds 90°, may be partially oriented downstream. The components of the second drilling direction, where the angle between the longitudinal axis of the first heating element and the second drilling direction exceeds 90°, may be oriented downstream. The components of the second drilling direction, where the angle between the longitudinal axis of the first heating element and the second drilling direction exceeds 90°, may be oriented in the same direction as the net airflow through the first airflow channel.

[0039] When the angle between the longitudinal axis of the first heating element and the direction of the second perforation exceeds 90°, the outlets of two or more second perforations may be at least partially offset toward the downstream end of the first airflow channel with respect to the corresponding inlets of the two or more second perforations.

[0040] The second drilling direction, where the angle between the longitudinal axis of the first heating element and the second drilling direction is 90°, may be perpendicular to the net airflow direction through the first airflow channel. The second drilling direction, where the angle between the longitudinal axis of the first heating element and the second drilling direction is 90°, may be perpendicular to the longitudinal axis of the first airflow channel.

[0041] The first drilling direction may be the same as the second drilling direction. The first drilling direction may be different from the second drilling direction. The second drilling may be located proximal to the first drilling. Alternatively, the first and second drilling may be scattered.

[0042] The first perforation direction may be partially oriented upstream, and the second perforation direction may be partially oriented downstream. The second perforation direction may be partially oriented in the direction of airflow through the first airflow channel, and the first perforation direction may be partially oriented in the opposite direction to the direction of airflow through the first airflow channel. Two or more first perforations may be arranged upstream of two or more second perforations. Improved airflow through the system may be provided. Improved aerosol delivery may be provided.

[0043] The first drilling direction may be partially oriented downstream, and the second drilling direction may be partially oriented upstream. The first drilling direction may be partially oriented in the direction of the airflow through the first airflow channel, and the second drilling direction may be partially oriented in the direction opposite to the direction of the airflow through the first airflow channel.

[0044] The first drilling direction may be angled 30° to 90° with respect to the long axis of the first heating element. The second drilling direction may be angled 90° to 150° with respect to the long axis of the first heating element.

[0045] Preferably, the first drilling direction may be angled to less than 30° to less than 90° with respect to the longitudinal axis of the first heating element. Preferably, the second drilling direction may be angled to more than 90° to 150° with respect to the longitudinal axis of the first heating element.

[0046] The first drilling direction may be angled 30° to 85°, preferably 35° to 80°, more preferably 40° to 70°, and even more preferably 45° to 65° with respect to the longitudinal axis of the first heating element. The second drilling direction may be angled 95° to 150°, preferably 100° to 145°, more preferably 110° to 140°, and even more preferably 115° to 135° with respect to the longitudinal axis of the first heating element. The first drilling direction may be angled approximately 60° with respect to the longitudinal axis of the first heating element. The second drilling direction may be angled approximately 120° with respect to the longitudinal axis of the first heating element.

[0047] The first drilling direction may be angled 45° to 65° with respect to the long axis of the first heating element, and the second drilling direction may be angled 115° to 135° with respect to the long axis of the first heating element.

[0048] Two or more first perforations may be arranged upstream of two or more second perforations. Alternatively, the two or more first perforations and the two or more second perforations may be scattered.

[0049] Improved airflow through the system may be provided. Improved aerosol delivery may be provided. Improved aerosol homogeneity may be provided. Improved mixing may be provided.

[0050] The first perforation may be located upstream of the second perforation. The first perforation may be located in the first region of the first heating element. The second perforation may be located in the second region of the first heating element. The first region of the first heating element may be located upstream of the second region of the first heating element.

[0051] The heating arrangement may include a second heating element. The second heating element may have at least two or more third perforations. Each of the third perforations may extend along the direction of the third perforation. The direction of the third perforation may be angled with respect to the longitudinal axis of the second heating element.

[0052] The second heating element may be cubic in shape. The second heating element may have a rectangular cross-section. The second heating element may be planar. The second heating element may be flat. The second heating element may be a sheet. The second heating element may be a perforated sheet.

[0053] The second heating element may be in contact with the first cavity. Alternatively, the second heating element may be in contact with the second cavity.

[0054] The second heating element may be configured to heat the first aerosol-forming substrate inserted into the first cavity. Alternatively, the second heating element may be configured to heat the second aerosol-forming substrate inserted into the second cavity.

[0055] The second heating element may be configured to heat the first aerosol-forming substrate of the first aerosol-generating article inserted into the first cavity. Alternatively, the second heating element may be configured to heat the second aerosol-forming substrate of the second aerosol-generating article inserted into the second cavity.

[0056] The longitudinal axis of the second heating element may extend between the distal and proximal ends of the second heating element.

[0057] The longitudinal axis of the second heating element may be arranged parallel to the longitudinal axis of the aerosol generator.

[0058] The third drilling direction may be angled between 30° and 150° with respect to the longitudinal axis of the second heating element.

[0059] The third drilling direction may preferably be angled to less than 30° to less than 90°, or greater than 90° to 150°, with respect to the longitudinal axis of the second heating element.

[0060] The third drilling direction may be defined by the angle between the longitudinal axis of the second heating element and the third drilling direction.

[0061] The angle between the longitudinal axis of the second heating element and the direction of the third drilling may be between 30° and 150°. The angular direction may depend on the direction of the airflow through the first airflow channel. The angular direction may depend on the direction of the airflow through the second airflow channel. The angular direction may be clockwise or counterclockwise. The angular direction may depend on the net direction of the airflow through the first airflow channel. The angular direction may depend on the net direction of the airflow through the second airflow channel. The net airflow through the first airflow channel may extend from the upstream end of the first airflow channel to the downstream end of the first airflow channel. The net airflow through the second airflow channel may extend from the upstream end of the second airflow channel to the downstream end of the second airflow channel.

[0062] Preferably, the angle between the longitudinal axis of the second heating element and the third drilling direction may be 30° to less than 90°, or greater than 90° to 150°.

[0063] The third drilling direction may be partially oriented downstream. The third drilling direction may be partially oriented upstream. The third drilling direction may be partially oriented in the direction of the airflow through one of the first and second airflow channels. The third drilling direction may be partially oriented in the opposite direction to the airflow through one of the first and second airflow channels. The third drilling direction may be partially oriented in the net direction of the airflow through one of the first and second airflow channels. The third drilling direction may be partially oriented in the opposite direction to the net direction of the airflow through one of the first and second airflow channels.

[0064] A third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction is less than 90° may be partially oriented upstream. Components of a third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction is less than 90° may be oriented upstream. Components of a third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction is less than 90° may be oriented in the opposite direction to the net direction of the airflow through the first airflow channel. Components of a third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction is less than 90° may be oriented in the opposite direction to the net direction of the airflow through the second airflow channel.

[0065] Each of the two or more third perforations may have an outlet that abuts the first airflow channel or the second airflow channel. Each of the two or more third perforations may have an inlet that abuts the first cavity or the second cavity. When the angle between the longitudinal axis of the second heating element and the direction of the third perforation is less than 90°, the outlets of the two or more third perforations may be at least partially offset toward the upstream end of the corresponding airflow channel with respect to the corresponding inlets of the two or more third perforations.

[0066] A third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction exceeds 90° may be partially oriented downstream. Components of the third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction exceeds 90° may be oriented downstream. Components of the third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction exceeds 90° may be oriented in the same direction as the net airflow through the first airflow channel. Components of the third drilling direction in which the angle between the longitudinal axis of the second heating element and the third drilling direction exceeds 90° may be oriented in the same direction as the net airflow through the second airflow channel.

[0067] When the angle between the longitudinal axis of the second heating element and the direction of the third perforation exceeds 90°, the outlets of two or more third perforations may be at least partially offset toward the downstream end of the corresponding airflow channel with respect to the corresponding inlets of the two or more third perforations.

[0068] The third drilling direction, where the angle between the long axis of the first heating element and the third drilling direction is 90°, may be perpendicular to the net airflow direction through at least one of the first airflow channel and the second airflow channel.

[0069] The second heating element may have at least two or more fourth perforations. Each of the fourth perforations may extend along the direction of the fourth perforation. The direction of the fourth perforation may be angled with respect to the longitudinal axis of the second heating element.

[0070] The fourth drilling direction may be angled by 30° to 150° with respect to the longitudinal axis of the second heating element.

[0071] The fourth drilling direction may preferably be angled to less than 30° to less than 90°, or greater than 90° to 150°, with respect to the longitudinal axis of the second heating element.

[0072] The fourth drilling direction may be defined by the angle between the longitudinal axis of the second heating element and the fourth drilling direction.

[0073] The angle between the longitudinal axis of the second heating element and the direction of the fourth drilling may be between 30° and 150°. The angular direction may depend on the direction of the airflow through the first airflow channel. The angular direction may depend on the direction of the airflow through the second airflow channel. The angular direction may be clockwise or counterclockwise. The angular direction may depend on the net direction of the airflow through the first airflow channel. The angular direction may depend on the net direction of the airflow through the second airflow channel. The net airflow through the first airflow channel may extend from the upstream end of the first airflow channel to the downstream end of the first airflow channel. The net airflow through the second airflow channel may extend from the upstream end of the second airflow channel to the downstream end of the second airflow channel.

[0074] Preferably, the angle between the longitudinal axis of the second heating element and the direction of the fourth drilling may be 30° to less than 90°, or greater than 90° to 150°.

[0075] The fourth drilling direction may be partially oriented downstream. The fourth drilling direction may be partially oriented upstream. The fourth drilling direction may be partially oriented in the direction of the airflow through one of the first and second airflow channels. The fourth drilling direction may be partially oriented in the opposite direction to the airflow through one of the first and second airflow channels. The fourth drilling direction may be partially oriented in the net direction of the airflow through one of the first and second airflow channels. The fourth drilling direction may be partially oriented in the opposite direction to the net direction of the airflow through one of the first and second airflow channels.

[0076] A fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction is less than 90° may be partially oriented upstream. Components of a fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction is less than 90° may be oriented upstream. Components of a fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction is less than 90° may be oriented in the opposite direction to the net direction of the airflow through the first airflow channel. Components of a fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction is less than 90° may be oriented in the opposite direction to the net direction of the airflow through the second airflow channel.

[0077] Each of the two or more fourth perforations may have an outlet that abuts the first airflow channel or the second airflow channel. Each of the two or more fourth perforations may have an inlet that abuts the first cavity or the second cavity. When the angle between the longitudinal axis of the second heating element and the direction of the fourth perforation is less than 90°, the outlets of the two or more fourth perforations may be at least partially offset toward the upstream end of the corresponding airflow channel with respect to the corresponding inlets of the two or more fourth perforations.

[0078] A fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction exceeds 90° may be partially oriented downstream. Components of the fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction exceeds 90° may be oriented downstream. Components of the fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction exceeds 90° may be oriented in the same direction as the net airflow through the first airflow channel. Components of the fourth drilling direction in which the angle between the longitudinal axis of the second heating element and the fourth drilling direction exceeds 90° may be oriented in the same direction as the net airflow through the second airflow channel.

[0079] When the angle between the longitudinal axis of the second heating element and the direction of the fourth perforation exceeds 90°, the outlets of two or more fourth perforations may be at least partially offset toward the downstream end of the corresponding airflow channel with respect to the corresponding inlets of the two or more fourth perforations.

[0080] The fourth drilling direction, where the angle between the longitudinal axis of the second heating element and the fourth drilling direction is 90°, may be perpendicular to the net airflow direction passing through at least one of the first airflow channel and the second airflow channel.

[0081] The first drilling direction may preferably be angled obliquely with respect to the longitudinal axis of the first heating element. The second drilling direction may preferably be angled obliquely with respect to the longitudinal axis of the first heating element. The third drilling direction may preferably be angled obliquely with respect to the longitudinal axis of the second heating element. The fourth drilling direction may preferably be angled obliquely with respect to the longitudinal axis of the second heating element.

[0082] Preferably, the “angled” drilling direction may refer to a drilling direction that is angled at an oblique angle. An obliquely angled drilling direction may refer to a drilling direction that is partially oriented downstream. An obliquely angled drilling direction may refer to a drilling direction that is partially oriented upstream. Preferably, an obliquely angled drilling direction may exclude a drilling direction of 90°.

[0083] Angled perforations can improve airflow through a system. Angled perforations can improve airflow characteristics. Angled perforations can provide improved aerosol delivery. Angled perforations can provide an improved user experience. Angled perforations can provide improved aerosol quality. Angled perforations can provide improved mixing of volatile aerosol-forming substrates and air. Angled perforations can provide improved aerosol homogeneity. Angled perforations can generate turbulence. Angled perforations can improve heat transfer. Angled perforations can accelerate airflow. Angled perforations can decelerate airflow.

[0084] The third drilling direction may be the same as the fourth drilling direction. The third drilling direction may be different from the fourth drilling direction. The fourth drilling hole may be located proximal to the third drilling hole. Alternatively, the third and fourth drilling holes may be scattered.

[0085] The third perforation direction may be at least partially oriented upstream, and the fourth perforation direction may be at least partially oriented downstream. The third perforation direction may be at least partially oriented opposite to the airflow through one of the first and second airflow channels, and the fourth perforation direction may be at least partially oriented in the direction of the airflow through the corresponding one of the first and second airflow channels. The third perforation may be located upstream of the fourth perforation. Improved airflow through the system may be provided. Improved aerosol delivery may be provided.

[0086] The third drilling direction may be at least partially oriented downstream, and the fourth drilling direction may be at least partially oriented upstream. The third drilling direction may be at least partially oriented in the direction of the airflow through one of the first and second airflow channels, and the fourth drilling direction may be at least partially oriented in the direction opposite to the airflow through the corresponding one of the first and second airflow channels.

[0087] The third drilling direction may be angled 30° to 90° with respect to the long axis of the second heating element. The fourth drilling direction may be angled 90° to 150° with respect to the long axis of the second heating element.

[0088] Preferably, the third drilling direction may have an angle of 30° to less than 90° with respect to the longitudinal axis of the second heating element. Preferably, the fourth drilling direction may be angled by more than 90° to 150° with respect to the longitudinal axis of the second heating element.

[0089] The third drilling direction may be angled 30° to 85°, preferably 35° to 80°, more preferably 40° to 70°, and even more preferably 45° to 65° with respect to the longitudinal axis of the second heating element. The fourth drilling direction may be angled 95° to 150°, preferably 100° to 145°, more preferably 110° to 140°, and even more preferably 115° to 135° with respect to the longitudinal axis of the second heating element. The third drilling direction may be angled approximately 60° with respect to the longitudinal axis of the second heating element. The fourth drilling direction may be angled approximately 120° with respect to the longitudinal axis of the second heating element.

[0090] The third drilling direction may be angled 45° to 65° with respect to the long axis of the second heating element, and the fourth drilling direction may be angled 115° to 135° with respect to the long axis of the second heating element.

[0091] Two or more third holes may be arranged upstream of two or more fourth holes. Alternatively, the two or more third holes and the two or more fourth holes may be scattered.

[0092] Improved airflow through the system may be provided. Improved aerosol delivery may be provided. Improved aerosol homogeneity may be provided. Improved mixing may be provided. An improved user experience may be provided.

[0093] The third perforation may be located upstream of the fourth perforation. The third perforation may be located in the first region of the second heating element. The fourth perforation may be located in the second region of the second heating element. The first region of the second heating element may be located upstream of the second region of the second heating element.

[0094] A drilling direction angled 90° to 150°, preferably more than 90° to 150°, with respect to the longitudinal axis of one of the first and second heating elements can accelerate the airflow. A drilling direction angled 90° to 150°, preferably more than 90° to 150°, with respect to the longitudinal axis of one of the first and second heating elements can accelerate the airflow toward the downstream end of the device. A drilling direction angled 90° to 150°, preferably more than 90° to 150°, with respect to the longitudinal axis of one of the first and second heating elements can draw airflow from the cavity into the airflow channel. A drilling direction having an angle of 30° to 90°, preferably less than 30° to 90°, with respect to the longitudinal axis of one of the first and second heating elements can generate turbulence. A perforation direction having an angle of 30° to 90°, preferably less than 30° to 90°, with respect to the longitudinal axis of one of the first and second heating elements can decelerate the airflow. A perforation direction having an angle of 30° to 90°, preferably less than 30° to 90°, with respect to the longitudinal axis of one of the first and second heating elements can improve the mixing and heat transfer between the airflow entering the airflow channel directly from the air intake of the device and the airflow entering the airflow channel from one or both of the first and second cavities.

[0095] A perforation direction partially oriented downstream can accelerate the airflow. A perforation direction partially oriented downstream can accelerate the airflow toward the downstream end of the device. A perforation direction partially oriented downstream can draw airflow from the cavity into the airflow channel. A perforation direction partially oriented upstream may create turbulence. A perforation direction partially oriented upstream can decelerate the airflow. A perforation direction partially oriented upstream can improve mixing and heat transfer between the airflow entering the airflow channel directly from the device's air intake and the airflow entering the airflow channel from one or both of the first and second cavities. Improved airflow through the system may be provided. Improved aerosol delivery may be provided.

[0096] A perforation direction partially oriented in the net direction of the airflow through the first airflow channel and one of the second airflow channels may accelerate the airflow. A perforation direction partially oriented in the net direction of the airflow through the first airflow channel and one of the second airflow channels may accelerate the airflow toward the downstream end of the device. A perforation direction partially oriented in the net direction of the airflow through the first airflow channel and one of the second airflow channels may draw airflow from the cavity into the airflow channel. A perforation direction partially oriented in the opposite direction to the net direction of the airflow through the first airflow channel and one of the second airflow channels may generate turbulence. A perforation direction partially oriented in the opposite direction to the net direction of the airflow through the first airflow channel and one of the second airflow channels may decelerate the airflow. A perforation direction partially oriented opposite to the net direction of the airflow through one of the first and second airflow channels can improve mixing and heat transfer between the airflow directly entering the airflow channel from the air intake of the device and the airflow into the airflow channel from one or both of the first and second cavities.

[0097] The airflow may be regulated by providing perforations at different angles within the heating element, thereby adjusting the characteristics of the airflow through the airflow channel in contact with the heating element. The airflow may be regulated by providing a specific distribution of angled perforations in one or both of the first and second heating elements. The airflow may be regulated by providing a specific distribution of perforations having angles of 30° to 90°, preferably 30° to less than 90°, and 90° to 150°, preferably greater than 90° to 150°, in one or both of the first and second heating elements.

[0098] The airflow may be tuned by providing a specific distribution of perforations having a perforation direction partially oriented upstream, and perforations having a perforation direction partially oriented downstream in one or both of the first and second heating elements. The airflow may also be tuned by providing a specific distribution of perforations partially oriented in the opposite direction to the net direction of the airflow through the airflow channel, and perforations partially oriented in the net direction of the airflow through the airflow channel.

[0099] For example, providing a perforation at the downstream end that is angled 90° to 150°, preferably more than 90° to 150°, with respect to the long axis of one of the heating elements may help accelerate the airflow toward the downstream end. The downstream end may have low pressure. Providing a perforation at the upstream end that is angled 30° to 90°, preferably less than 30° to 90°, with respect to the long axis of the heating element may create turbulence at the upstream end. The upstream end may have high pressure.

[0100] Providing a perforation at the downstream end of an airflow channel with a perforation direction partially oriented downstream may help accelerate the airflow toward the downstream end. Providing a perforation at the downstream end of an airflow channel with a perforation direction partially oriented in the net direction of the airflow through one or both of the first and second airflow channels may help accelerate the airflow toward the downstream end.

[0101] Providing a perforation at the upstream end of an airflow channel with a perforation direction partially oriented upstream can generate turbulence at the upstream end. Providing a perforation at the upstream end of an airflow channel with a perforation direction partially oriented opposite to the net direction of the airflow through one or both of the first and second airflow channels can generate turbulence at the upstream end.

[0102] The apparatus may include a second airflow channel. A second heating element may be disposed between the first cavity and the second airflow channel. The second heating element may be disposed in contact with the first cavity and the second airflow channel. One or both of the third and fourth perforations may be configured to fluidly connect the first cavity to the second airflow channel. The second heating element may be configured to contact the first cavity. The second heating element may be configured to contact one or both of the first aerosol-forming substrate and the first aerosol-generating article inserted into the first cavity. The second heating element may be configured to heat the first aerosol-forming substrate.

[0103] Each of the two or more third perforations may be configured to fluidly connect the first cavity to the second airflow channel. Each of the two or more fourth perforations may be configured to fluidly connect the first cavity to the second airflow channel.

[0104] The second airflow channel may be cubic in shape. The second airflow channel may have a rectangular cross-section. The second airflow channel may be planar. The second airflow channel may be flat.

[0105] The second airflow channel may be arranged parallel to the second heating element. The second airflow channel may be arranged parallel to the first cavity. The second heating element may be arranged radially outward from the first cavity. The second airflow channel may be arranged radially outward from the second heating element.

[0106] The apparatus may include a second cavity configured to receive a second aerosol-forming substrate. The second cavity may be configured to receive a second aerosol-generating article comprising the second aerosol-forming substrate.

[0107] The second cavity may be disposed in contact with the second heating element. The second cavity may be in contact with the second heating element. The second heating element may be disposed between the second cavity and the first airflow channel. The second heating element may be disposed in contact with both the second cavity and the first airflow channel. One or both of the third and fourth perforations may be configured to fluidly connect the second cavity to the first airflow channel. The second heating element may be configured to be in contact with one or both of the second aerosol-forming substrate or the second aerosol-generating article. The second heating element may be configured to heat the second aerosol-forming substrate.

[0108] Each of the two or more third perforations may be configured to fluidly connect the second cavity to the first airflow channel. Each of the two or more fourth perforations may be configured to fluidly connect the second cavity to the first airflow channel.

[0109] The second cavity may be cubic in shape. The second cavity may have a rectangular cross-section. The second cavity may be planar. The second cavity may be flat. The second cavity may be configured to closely match the shape of the second aerosol-forming substrate. The second cavity may be configured to closely match the shape of the second aerosol-generating article. The second cavity may be configured to slidably receive the second aerosol-forming substrate. The second cavity may be configured to slidably receive the second aerosol-generating article.

[0110] The second cavity may be arranged parallel to the second heating element. The second cavity may be arranged parallel to the first airflow channel. The second heating element may be configured radially outward from the first airflow channel. The second cavity may be arranged radially outward from the second heating element.

[0111] The shapes of the first cavity and the second cavity may be the same. Alternatively, the shapes of the first cavity and the second cavity may be different.

[0112] The apparatus may include a second cavity configured to receive a second aerosol-forming substrate. The apparatus may also include a second airflow channel. A second heating element may be disposed between the second cavity and the second airflow channel. The second heating element may be disposed in contact with the second cavity and the second airflow channel. One or both of the third and fourth perforations may be configured to fluidly connect the second cavity to the second airflow channel.

[0113] The first cavity may have an open end. The open end of the first cavity may be located at the downstream end of the first cavity. The second cavity may have an open end. The open end of the second cavity may be located at the downstream end of the second cavity. The first airflow channel may have an open end. The open end of the first airflow channel may be located at the downstream end of the first airflow channel. The second airflow channel may include an open end. The open end of the second airflow channel may be located at the downstream end of the second airflow channel.

[0114] The first aerosol-forming substrate may be inserted into the first cavity through the first cavity open end. The first aerosol-generating article may be inserted into the first cavity through the first cavity open end. The second aerosol-forming substrate may be inserted into the second cavity through the second cavity open end. The second aerosol-generating article may be inserted into the second cavity through the second cavity open end.

[0115] One or both of the first and second heating elements may be resistance heating elements.

[0116] The first resistance heating element and the second resistance heating element may be in contact with the first cavity. The first cavity may be disposed between the first resistance heating element and the second resistance heating element. The first resistance heating element may be in contact with the first airflow channel. The second resistance heating element may be in contact with the second airflow channel. The first resistance heating element and the second resistance heating element may be in contact with the first cavity.

[0117] The heating arrangement may include a first planar induction coil. The first planar induction coil may be configured to contact the first cavity. The first induction coil may have a rectangular cross-section. The first induction coil may be flat. The first induction coil may be cubic in shape.

[0118] The first planar induction coil may line the first cavity. The first planar induction coil may be arranged parallel to the first cavity. The first planar induction coil may be arranged parallel to the first heating element. The first planar induction coil may be arranged parallel to the first airflow channel. The first planar induction coil may be arranged radially outward from the first cavity.

[0119] The first heating element may be a susceptor. The first heating element may be a perforated susceptor. The first heating element may be a first induction heating element. The first heating element may be a first perforated induction heating element.

[0120] Power may be supplied to a first planar induction coil. The first planar induction coil may be configured to heat a first heating element. The first planar induction coil may generate an alternating magnetic field that penetrates the first heating element.

[0121] The first planar induction coil may be sealed. The first planar induction coil may be disposed within the wall of the device housing.

[0122] The heating arrangement may include a second planar induction coil. The second planar induction coil may be configured to abut against the second cavity. The second induction coil may have a rectangular cross-section. The second induction coil may be flat. The second induction coil may be cubic in shape.

[0123] The second planar induction coil may line the second cavity. The second planar induction coil may be arranged parallel to the second cavity. The second planar induction coil may be arranged parallel to the second heating element. The second planar induction coil may be parallel to the first airflow channel. The second planar induction coil may be parallel to the second airflow channel. The second planar induction coil may be arranged radially outward from the second cavity.

[0124] The second heating element may be a susceptor. The second heating element may be a perforated susceptor. The second heating element may be a second induction heating element. The second heating element may be a second perforated induction heating element.

[0125] Power may be supplied to a second planar induction coil. The second planar induction coil may be configured to heat a second heating element. The second planar induction coil may generate an alternating magnetic field that penetrates the second heating element.

[0126] The second planar induction coil may be sealed. The second planar induction coil may be disposed within the wall of the device housing.

[0127] One or both of the first and second planar induction coils may be provided with shielding. The shielding may be electromagnetic shielding. Electromagnetic shielding may at least partially shield the rest of the device from the electromagnetic field generated by both the first and second coils. The shielding may be thermal shielding. Thermal shielding may prevent a user holding the device from being burned by the heat generated by one or more of the first and second heating elements.

[0128] One or both of the first and second heating elements may be planar in shape.

[0129] One or both of the first and second heating elements may be produced by electrodeposition.

[0130] One or more of the first, second, third, and fourth perforations may be produced by electrodeposition. One or more of the first, second, third, and fourth perforations may be produced by sintering.

[0131] Heating elements produced using electrodeposition may have surfaces that provide low abrasion resistance. Using heating elements produced using electrodeposition may reduce the risk of damaging aerosol-forming substrates or aerosol-generating articles when inserting the substrate or article into the apparatus.

[0132] Electrodeposition can refer to an electrochemical process. A metal plate may be used as a master negative. To create a perforated heating element, an electrical insulating material may be used to cover the intended perforation locations on the master negative. The portion of the master negative not covered by the insulating material may be electroplated in an acid bath with a metal coating (first coating) and then passivated with, for example, a dichromate (second coating). The metal added to the master negative may form the final perforated heating element. The edges of the perforations created by electrodeposition may be rounded. The resulting perforated heating element may have low abrasion.

[0133] Electrodeposition can enable a wide range of hole shapes and distributions. Electrodeposition can also allow for adjustment of the coating thickness (affecting the final hole diameter). The porosity and draw-out resistance (RTD) of the heating element may be controlled with high precision.

[0134] One or both of the first and second heating elements may be metal foil.

[0135] Perforations may be made in the metal foil using a perforation tool or a laser. Perforations may also be made in the metal foil by electroplating.

[0136] One or more of the first, second, third, and fourth perforations may have rounded edges. Rounded edges can reduce the risk of damaging the aerosol-forming substrate or aerosol-generating article during insertion into the device.

[0137] One or both of the first and second heating elements may have rounded downstream ends. Rounded downstream ends can reduce the risk of damaging the aerosol-forming substrate or aerosol-generating article during insertion into the device. Rounded downstream ends can improve the ease of insertion of the aerosol substrate or aerosol-generating article.

[0138] The device may include an air intake. The device may include one or more of the following: a first cavity inlet configured to fluidly connect the air intake to a first cavity; a second cavity inlet configured to fluidly connect the air intake to a second cavity; a first airflow channel inlet configured to fluidly connect the air intake to a first airflow channel; and a second airflow channel inlet configured to fluidly connect the air intake to a second airflow channel.

[0139] The device may include a housing. The air intake of the device may be an opening within the housing of the device. The device may include an airflow distribution channel disposed between the air intake of the device and one or more of the first cavity inlet, the second cavity inlet, the first airflow channel inlet, and the second airflow channel inlet.

[0140] The first aerosol-forming substrate may be inserted into the first cavity through the first cavity inlet. The first aerosol-generating article may be inserted into the first cavity through the first cavity inlet. The second aerosol-forming substrate may be inserted into the second cavity through the second cavity inlet. The second aerosol-generating article may be inserted into the second cavity through the second cavity inlet.

[0141] One or both of the first and second cavities may have a length of 10 to 30 millimeters. One or both of the first and second cavities may have a width of 7 to 17 millimeters. One or both of the first cavities within the second cavity may have a height of 1 to 5 millimeters.

[0142] One or both of the first and second airflow channels may have a length of 7 mm to 21 mm. One or both of the first and second airflow channels may have a width of 7 mm to 17 mm. One or both of the first and second airflow channels may have a height of 1.5 mm to 3.5 mm.

[0143] The device may include a mouthpiece. The mouthpiece may include a housing. The mouthpiece may be detachably connected to the device. The mouthpiece may be fluidly connected to a first airflow channel via an open end of a first airflow channel. The mouthpiece may be fluidly connected to a second airflow channel via an open end of a second airflow channel. The mouthpiece may be fluidly connected to a first cavity via an open end of a first cavity. The mouthpiece may be fluidly connected to a second cavity via an open end of a second cavity. The mouthpiece may include an aerosol outlet. The user may inhale an aerosol through the aerosol outlet. The aerosol outlet may be fluidly connected to one or more of the first airflow channel, the second flow channel, the first cavity, and the second cavity.

[0144] The mouthpiece may include a chamber. The chamber may be fluidly connected to one or more of the first airflow channel, the second flow channel, the first cavity, and the second cavity. The chamber may be fluidly connected to one or more of the first airflow channel via the open end of the first airflow channel, the second flow channel via the open end of the second airflow channel, the first cavity via the open end of the first cavity, and the second cavity via the open end of the second cavity. The chamber may be fluidly connected to an aerosol outlet. The airflow from one or more of the first cavity, the second cavity, the first airflow channel, and the second airflow channel may be mixed within the chamber. The chamber may be a cooling chamber. One or both of the volatilized first aerosol-forming substrate and the second aerosol-forming substrate in the airflow entering the chamber may be cooled inside the chamber to form an aerosol. The chamber may be a mixing chamber. The airflow is from one or more of the first cavity, the second cavity, the first airflow channel, and the second airflow channel, and may be mixed within the chamber. A homogenized mixture may be obtained.

[0145] The mouthpiece may be located downstream of one or more of the first airflow channel, the second flow channel, the first cavity, and the second cavity. The mouthpiece may be located at the oral end. The mouthpiece may be located at the downstream end of the device. The mouthpiece may be a hinged mouthpiece.

[0146] The device may include a main body. The main body may include a controller. The main body may include a power supply. The power supply may be a battery. The main body may include one or more of the following: a heating arrangement, a first cavity, a second cavity, a first airflow channel, a second flow channel, a first cavity inlet, a second cavity inlet, a first airflow channel inlet, and a second airflow channel inlet. Alternatively, one or more of the following may be located in an intermediate section: a heating arrangement, a first cavity, a second cavity, a first airflow channel, a second airflow channel, a first cavity inlet, a second cavity inlet, a first airflow channel inlet, and a second airflow channel inlet. The main body may be configured to be detachably attached to a mouthpiece. The main body may include a housing.

[0147] The main unit may be equipped with an interface. The interface may be configured as a data port for transferring data. The interface may be configured to connect to an external energy source for recharging the power supply.

[0148] The mouthpiece may be removed from the main body in order to insert one or more of the first aerosol-forming substrate, the second aerosol-forming substrate, the first aerosol-generating article, and the second aerosol-generating article.

[0149] The intermediate section may include a housing. The main body may be configured to be detachably attached to the upstream end of the intermediate section. The intermediate section may be configured to be detachably attached to the upstream end of the mouthpiece. The mouthpiece may be configured to be detachably attached to the downstream end of the intermediate section.

[0150] By providing a removable mouthpiece, a removable intermediate section, and a removable body, the manufacturer may upgrade each component one at a time. By providing a removable mouthpiece, a removable intermediate section, and a removable body, access to one or both of the first and second cavities may be improved.

[0151] The main body may have a length of 30 mm to 70 mm. The main body may have a width of 12 mm to 35 mm. The main body may have a height of 5 mm to 15 mm.

[0152] The intermediate section may have a length of 20 mm to 45 mm. The intermediate section may have a width of 12 mm to 35 mm. The intermediate section may have a height of 5 mm to 15 mm.

[0153] The mouthpiece may have a length of 15 mm to 40 mm. The mouthpiece may have a width of 12 mm to 35 mm. The mouthpiece may have a height of 5 mm to 15 mm.

[0154] A second embodiment relates to an aerosol generating system comprising an aerosol generating device and a first aerosol generating substrate as described herein.

[0155] According to embodiments of the present invention, an aerosol generating system is provided which may include the aerosol generating apparatus and the first aerosol generating substrate described herein.

[0156] The first aerosol generating substrate may be a first planar aerosol generating substrate. The first cavity may be configured to receive the first planar aerosol forming substrate.

[0157] Planar aerosol-forming substrates may be manufactured more efficiently. Planar aerosol-forming substrates may be compact. Planar aerosol-forming substrates may be heated with improved efficiency.

[0158] The planar aerosol-forming substrate may be more compact. Providing a planar aerosol-forming substrate can improve thermal contact between the heating element and the aerosol-forming substrate.

[0159] Providing a planar cavity can improve the operational efficiency of the device. Providing a planar cavity can improve heating efficiency. The planar cavity may be more compact. Providing a planar cavity can improve thermal contact between the heating element and the aerosol-forming substrate.

[0160] Providing a planar heating element can improve the operating efficiency of the device. Providing a planar heating element can improve heating efficiency. A planar heating element may be more compact. Providing a planar heating element can improve thermal contact between the heating element and the aerosol-forming substrate.

[0161] The first aerosol-forming substrate may be cubic in shape. The first aerosol-forming substrate may have a rectangular cross-section. The first aerosol-forming substrate may be flat. The first aerosol-forming substrate may be cylindrical. The first aerosol-forming substrate may have a flat cylindrical shape. The first aerosol-forming substrate may have an elliptical cross-section. The first aerosol-forming substrate may be coin-shaped.

[0162] The first aerosol-forming substrate may be porous. The first aerosol-forming substrate may be configured to allow airflow through the substrate. At least a portion of the airflow through the first cavity may flow through at least a portion of one or both of the first aerosol-forming substrate and the first aerosol-generating article.

[0163] As used herein, a “porous” element may be an element through which air can pass when the applied pressure drop (draw resistance) is in the range of 80 to 130 mmH2O.

[0164] The first aerosol-forming substrate may be configured to slide within the first cavity. The first aerosol-generating article may be configured to slide within the first cavity.

[0165] The system may include a second aerosol generating substrate. The second aerosol generating substrate may be a second planar aerosol generating substrate. The system may include a second aerosol forming substrate. The second aerosol forming substrate may be a second planar aerosol forming substrate. The second cavity may be configured to receive the second planar aerosol forming substrate.

[0166] The second aerosol-forming substrate may be cubic in shape. The second aerosol-forming substrate may have a rectangular cross-section. The second aerosol-forming substrate may be flat. The second aerosol-forming substrate may be cylindrical. The second aerosol-forming substrate may be coin-shaped. The second aerosol-forming substrate may have the same shape as the first aerosol-forming substrate.

[0167] The second aerosol-generating substrate may be porous. The second aerosol-forming substrate may be configured to allow airflow through the substrate. At least a portion of the airflow through the second cavity may flow through at least a portion of one or both of the second aerosol-forming substrate and the second aerosol-generating article.

[0168] The second aerosol-forming substrate may be configured to slide within the second cavity. The second aerosol-generating article may be configured to slide within the second cavity.

[0169] A first aerosol-forming substrate may be configured to provide a first user experience. A second aerosol-forming substrate may be configured to provide a second user experience. The first user experience may differ from the second user experience. Power may be supplied to a first induction coil or a first resistance heating element to provide the first experience. A first heating profile may be supplied to a first induction coil or a first resistance heating element. The first heating profile may be adapted to the characteristics of the first aerosol-forming substrate. Power may be supplied to a second induction coil or a second resistance heating element to provide a second experience. A second heating profile may be supplied to a second induction coil or a second resistance heating element. The second heating profile may be adapted to the characteristics of the second aerosol-forming substrate.

[0170] A third user experience may be provided by supplying power to both the first and second induction coils. A third user experience may be provided by supplying power to both the first and second resistance heating elements. A third user experience may be a combination of the first and second user experiences. A third user experience may be adjusted by adapting one or both of the first and second heating profiles. A third user experience may be adapted to the individual preferences of the consumer.

[0171] The first aerosol-forming substrate may be configured differently from the second aerosol-forming substrate. The first aerosol-generating article may be configured differently from the second aerosol-generating article.

[0172] The shape of the first aerosol-forming substrate may differ from the shape of the second aerosol-forming substrate. The shape of the first aerosol-generating article may differ from the shape of the second aerosol-generating article.

[0173] By providing a first and second substrate of different shapes, users can easily distinguish between the first and second substrates. By providing a first and second article of different shapes, users can easily distinguish between the first and second article. By providing substrates of different shapes and matching the first and second cavities, the risk of consumers inserting the first substrate into the second cavity, or the second substrate into the first cavity, may be reduced. By providing articles of different shapes and matching the first and second cavities, the risk of consumers inserting the first article into the second cavity, or the second article into the first cavity, may be reduced.

[0174] The first aerosol-forming substrate may be configured in the same way as the second aerosol-forming substrate. The first aerosol-generating article may be configured in the same way as the second aerosol-generating article.

[0175] The first aerosol-forming substrate may have a shape that closely conforms to the shape of the first cavity. The second aerosol-forming substrate may have a shape that closely conforms to the shape of the second cavity.

[0176] The first aerosol-forming substrate may form a part of the first aerosol-generating article. The first aerosol-generating article may be a first planar aerosol-generating article. The second aerosol-forming substrate may form a part of the second aerosol-generating article. The second aerosol-generating article may be a second planar aerosol-generating article. The first aerosol-generating article may have a shape that closely conforms to the shape of the first cavity. The second aerosol-generating article may have a shape that closely conforms to the shape of the second cavity.

[0177] The first aerosol generating article may have a cubic shape. The first aerosol generating article may have a rectangular cross-section. The first aerosol generating article may be flat. The first aerosol generating article may be cylindrical. The first aerosol forming article may have a flat cylindrical shape. The first aerosol forming article may have an elliptical cross-section. The first aerosol forming article may be coin-shaped. The first aerosol generating article may be porous. The first aerosol generating article may be configured to allow airflow through the article.

[0178] The second aerosol generating article may be cubic in shape. The second aerosol generating article may have a rectangular cross-section. The second aerosol generating article may be flat. The second aerosol generating article may be cylindrical. The second aerosol forming article may have a flat cylindrical shape. The second aerosol forming article may have an elliptical cross-section. The second aerosol generating article may be coin-shaped. The second aerosol generating article may be porous. The second aerosol generating article may be configured to allow airflow through the article.

[0179] The airflow through the first cavity may flow at least partially through the inserted first aerosol-generating article. The airflow through the first cavity may flow at least partially through the inserted first aerosol-forming substrate.

[0180] The airflow through the second cavity may flow at least partially through the inserted second aerosol-generating article. The airflow through the second cavity may flow at least partially through the inserted second aerosol-forming substrate.

[0181] The device may include a controller. A first induction coil may be connected to the controller. A second induction coil may be connected to the controller. The controller may be configured to control the first induction coil. The controller may be configured to control the second induction coil. The controller may be configured to control the operation of the first induction coil independently of the operation of the second induction coil. The controller may be configured to control a first power supply to the first induction coil. The controller may be configured to control a second power supply to the second induction coil. The first power supply may be different from the second power supply. The first power supply may differ from the second power supply in terms of one or more of the intensity and timing. The controller may be configured to provide a first heating profile to the first induction coil. The controller may be configured to provide a second heating profile to the second induction coil.

[0182] The controller may be connected to a first resistive heating element. The controller may be connected to a second resistive heating element. The controller may be configured to supply power to the first resistive heating element. The controller may be configured to supply power to the second resistive heating element. The controller may be configured to supply power to the first resistive heating element independently of supplying power to the second heating element. The power supplied to the first resistive heating element may be different from the power supplied to the second resistive heating element. The controller may be configured to provide a first heating profile to the first resistive heating element. The controller may be configured to provide a second heating profile to the second resistive heating element. The first heating profile may be different from the second heating profile.

[0183] The first heating profile may be adapted to the properties of the first aerosol-forming substrate. The second heating profile may be adapted to the properties of the second forming substrate.

[0184] The present invention allows users to flexibly adapt the user experience. For example, if a user experience having a first characteristic is desired, the user may insert a first aerosol generating article containing a first aerosol-forming substrate having a specific first characteristic, such as a first flavor or a first nicotine content. Alternatively, if a user experience having a second characteristic is desired, the user may insert a second aerosol generating article containing a second aerosol-forming substrate having a specific second characteristic, such as a second flavor or a second nicotine content. Alternatively, if a user desires a combination of the first and second characteristics, the user may insert both the first and second aerosol generating articles. The ratio between the first and second characteristics may be adjusted by adapting the heating profiles of the first and second heating elements. For example, if a user experience primarily having the first characteristic is desired, the intensity and / or length of the power supply to the first induction coil or first resistance heating element may be increased, while the intensity and / or length of the power supply to the second induction coil or second resistance heating element may be decreased.

[0185] During use, the consumer may insert one or both of the first aerosol generating article and the second aerosol generating article into the device. The user may inhale the device and draw air through the device's air intake. The airflow may be distributed between one or more of the first cavity, the second cavity, the first airflow channel, and the second airflow channel. A heating element in contact with the cavity may heat the aerosol-forming substrate inserted into the cavity, causing at least a portion of the substrate to volatilize. At least a portion of the volatilized substrate may flow into the mouthpiece chamber through the cavity open end. Another portion of the volatilized substrate may flow into the airflow channel in contact with the heating element through a perforation in the heating element disposed between the cavity and the airflow channel. The volatilized substrate may mix within the airflow channel with the airflow that directly enters the airflow channel through the airflow channel inlet. The distribution and direction of the perforations in the heating element in contact with the airflow channel may adjust the characteristics of the airflow through the airflow channel. The mixture in the airflow channel may flow into the mouthpiece chamber through the open end of the airflow channel. Different airflows entering the mouthpiece chamber may mix within the chamber. The mixture may cool within the chamber to form an aerosol. The aerosol may be inhaled by the consumer through the air outlet of the mouthpiece.

[0186] Where the angular ranges of the first, second, third, and fourth drilling directions are referred to herein, angles of about 90° may preferably be excluded. The first drilling direction of about 90° may be excluded. The second drilling direction of about 90° may be excluded. The third drilling direction of about 90° may be excluded. The fourth drilling direction of about 90° may be excluded. For example, a drilling direction having an angle of 30° to 150° may refer to a drilling direction having an angle of 30° to less than 90°, or greater than 90° to 150°. For example, a drilling direction having an angle of 30° to 90° may refer to a drilling direction having an angle of 30° to less than 90°. For example, a drilling direction having an angle of 90° to 150° may refer to a drilling direction having an angle of greater than 90° to 150°.

[0187] The airflow through the airflow channel may refer to the airflow through the airflow channel when the device is in use. The airflow through the airflow channel may refer to the airflow through the airflow channel when the user is inhaling the proximal end of the device.

[0188] The airflow through the first airflow channel may be directed from the distal end of the first airflow channel to the proximal end of the first airflow channel. The airflow through the second airflow channel may be directed from the distal end of the second airflow channel to the proximal end of the second airflow channel. The net airflow through the first airflow channel may be directed from the distal end of the first airflow channel to the proximal end of the first airflow channel. The net airflow through the second airflow channel may be directed from the distal end of the second airflow channel to the proximal end of the second airflow channel.

[0189] The airflow through the airflow channel may be directed from the upstream end of the airflow channel to the downstream end. The net airflow through the airflow channel may be directed from the upstream end of the airflow channel to the downstream end.

[0190] The longitudinal axis of a component may be along the longitudinal direction of the component or parallel to the longitudinal direction of the component. The longitudinal axis of a device may extend between the distal end and the proximal end of the device. The longitudinal axis of a first heating element may extend between the distal ends within the proximal end of the first heating element. The longitudinal axis of a second heating element may extend between the distal ends within the proximal end of the second heating element. The longitudinal axis of a first airflow channel may extend between the distal end and the proximal end of the first airflow channel. The longitudinal axis of a second airflow channel may extend between the distal end and the proximal end of the second airflow channel.

[0191] The longitudinal axis of the first heating element may extend between the distal and proximal ends of the first heating element. The longitudinal axis of the second heating element may extend between the distal and proximal ends of the second heating element.

[0192] As used herein, the terms “proximal,” “distal,” “downstream,” and “upstream” are used to describe the relative position of a component or part of a component of an aerosol generator with respect to the direction in which the user inhales the aerosol generator during use.

[0193] An aerosol generator may have an oral end through which, during use, aerosols exit the aerosol generator and are delivered to the user. The oral end may be called the proximal end. During use, the user inhales the proximal or oral end of the aerosol generator to inhale the aerosols generated by the aerosol generator. The aerosol generator has a distal end opposite to the proximal or oral end. The proximal or oral end of the aerosol generator may also be called the downstream end, and the distal end of the aerosol generator may also be called the upstream end. Components of the aerosol generator, or parts of components, may be described as being upstream or downstream of each other based on their relative positions between the proximal, downstream, or oral end of the aerosol generator and the distal or upstream end of the aerosol generator.

[0194] As used herein, “aerosol generator” refers to a device that generates an aerosol by interacting with an aerosol-forming substrate. The aerosol-forming substrate may be part of an aerosol-generating article, for example, part of a smoking article. The aerosol generator may be a smoking device that interacts with the aerosol-forming substrate of an aerosol-generating article to generate an aerosol that can be directly inhaled into the user's lungs through the user's mouth. The aerosol generator may be a holder. The device may be an electrically heated smoking device. The aerosol generator may comprise a housing, an electrical circuit, a power supply, and a heating arrangement.

[0195] As used herein in relation to the present invention, the term “smoking” in relation to apparatus, articles, systems, substrates, or otherwise does not refer to conventional smoking in which the aerosol-forming substrate is completely or at least partially burned. The aerosol-generating apparatus of the present invention is configured to heat the aerosol-forming substrate to a temperature below the combustion temperature of the aerosol-forming substrate, but above the temperature at which one or more volatile compounds of the aerosol-forming substrate are released, in order to form an inhalable aerosol.

[0196] The aerosol generator may include an electrical circuit. The electrical circuit may include a microprocessor, which may be a programmable microprocessor. The microprocessor may be part of a controller. The electrical circuit may include further electronic components. The electrical circuit may be configured to regulate the power supply to the heating arrangement. Power may be supplied to the heating arrangement continuously following the startup of the aerosol generator, or intermittently (e.g., with each smoke extraction). Power may be supplied to the heating arrangement in the form of current pulses. The electrical circuit may be configured to monitor the electrical resistance of one or both of the first and second heating elements, preferably depending on the electrical resistance of one or both of the first and second heating elements, in order to control the power supply to one or both of the first and second heating elements.

[0197] The aerosol generator may have a power source (typically a battery) within the body of the aerosol generator. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source may be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery (e.g., a lithium-cobalt battery, lithium iron phosphate, lithium titanate, or lithium polymer battery). The power source may be a lithium-ion polymer battery. Alternatively, the power source may be another form of charge storage device, such as a capacitor. The power source may be a supercapacitor. The power source may be a hypercapacitor. The power source may require recharging and may have a capacity that allows for the storage of sufficient energy for one or more use experiences. For example, the power source may have a capacity sufficient to continuously generate aerosol for about six minutes, or for a time that is a multiple of six minutes. In another embodiment, the power source may have a capacity sufficient to provide a predetermined number of fume extractions or discontinuous operation of the heating element.

[0198] The first cavity open end may be the proximal end. The second cavity open end may be the proximal end. The first cavity may have a base facing the first cavity open end. The second cavity may have a base facing the second cavity open end. The first cavity base may be closed except for providing a first cavity inlet disposed at the base. The second cavity base may be closed except for providing a second cavity inlet disposed at the base. The first cavity base may be flat. The second cavity base may be flat. The first cavity base may be rectangular. The second cavity base may be rectangular. The first cavity base may be located upstream of the first cavity. The second cavity base may be located upstream of the second cavity. The first cavity open end may be located downstream of the first cavity. The second cavity open end may be located downstream of the second cavity. The first cavity may have an elongated extension. The second cavity may have an elongated extension. The first cavity may have a central axis in the longitudinal direction. The second cavity may have a central axis in the longitudinal direction. The longitudinal direction may be a direction extending between the base and the open end along the central axis in the longitudinal direction. The central axis in the longitudinal direction of the first cavity may be parallel to the longitudinal axis of the aerosol generator.

[0199] The first cavity may be configured as a heating chamber. The second cavity may be configured as a heating chamber. The first cavity may have a hollow rectangular shape. The second cavity may have a hollow rectangular shape. The first cavity may have a shape corresponding to the shape of the first aerosol generating article received in the first cavity. The second cavity may have a shape corresponding to the shape of the second aerosol generating article received in the second cavity. The first cavity may have an inner diameter corresponding to the outer diameter of the first aerosol generating article. The first cavity may have an inner diameter corresponding to the outer diameter of the first aerosol forming substrate. The second cavity may have an inner diameter corresponding to the outer diameter of the second aerosol generating article. The second cavity may have an inner diameter corresponding to the outer diameter of the second aerosol forming substrate.

[0200] The heating arrangement may be a resistance heating arrangement. The first heating element and one of the second heating elements may include an electrical resistance material. Suitable electrical resistance materials include, but are not limited to, semiconductors such as doped ceramics, "conductive" ceramics (e.g., molybdenum disilide), carbon, graphite, metals, alloys, and composite materials made of ceramic and metallic materials. Such composite materials may include doped ceramics or undoped ceramics. An example of a suitable doped ceramic is doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum platinum, gold, and silver. Suitable metal alloys include stainless steel, nickel-containing, cobalt-containing, chromium-containing, aluminum-containing, titanium-containing, zirconium-containing, hafnium-containing, niobium-containing, molybdenum-containing, tantalum-containing, tungsten-containing, tin-containing, gallium-containing, manganese-containing, gold-containing, and iron-containing alloys, as well as nickel, iron, cobalt, and stainless steel-based superalloys, Timetal®, and iron-manganese-aluminum alloys. In composite materials, the electrical resistive material may be embedded in, encapsulated in, or coated with an insulating material, depending on the required energy transfer dynamics and external physicochemical properties, or vice versa.

[0201] The heating arrangement may be an induction heating arrangement. The induction heating arrangement may include a first induction coil and a first heating element. The induction heating arrangement may include a second induction coil and a second heating element. The induction heating arrangement may include a first induction coil, a second induction coil, a first heating element, and a second heating element.

[0202] One or both of the first and second heating elements may be susceptors. Both of the first and second heating elements may be made of a material capable of generating heat when penetrated by an alternating magnetic field. The first induction coil may generate an alternating magnetic field in the first cavity. The first induction coil may generate an alternating magnetic field penetrating the first heating element. The second induction coil may generate an alternating magnetic field in the second cavity. The second induction coil may generate an alternating magnetic field penetrating the second heating element.

[0203] When one or both of the first and second heating elements are conductive, eddy currents are typically induced by the alternating magnetic field. When one or both of the first and second heating elements are magnetic, another effect that typically contributes to heating is generally called hysteresis loss. Hysteresis loss is mainly caused by the movement of magnetic domain blocks within one or both of the first and second heating elements, because their magnetic field orientation aligns with the alternating magnetic induction field. Another effect that contributes to hysteresis loss is when magnetic domains expand or contract within one or both of the first and second heating elements. These changes in one or both of the first and second heating elements, occurring at or below the nanoscale, are generally called "hysteresis loss" because they generate heat in one or both of the first and second heating elements. Therefore, if one or both of the first and second heating elements are both magnetic and conductive, both hysteresis loss and eddy current generation will contribute to heating one or both of the first and second heating elements. If one or both of the first and second heating elements are magnetic but not conductive, hysteresis loss is the only means by which one or both of the first and second heating elements are heated when penetrated by an alternating magnetic field. According to the present invention, one or both of the first and second heating elements may be conductive or magnetic, or both conductive and magnetic. An alternating magnetic field generated by the first induction coil may heat the first heating element, which then transfers heat to the first aerosol-forming substrate. An alternating magnetic field generated by the second induction coil heats the second heating element, which then transfers heat to the second aerosol-forming substrate. Heat transfer may be mainly by conduction. This heat transfer is most efficient when one of the first and second heating elements is in close thermal contact with the aerosol-forming substrate.

[0204] As used herein, the term “aerosol-generating article” refers to an article comprising an aerosol-forming substrate having the ability to release volatile compounds capable of forming aerosols. For example, an aerosol-generating article may be a smoking article that generates an aerosol that can be directly inhaled into the user's lungs through the user’s mouth. An aerosol-generating article may be disposable.

[0205] As used herein, the term “aerosol-forming substrate” refers to a substrate having the ability to release one or more volatile compounds that can form aerosols. Such volatile compounds may be released by heating the aerosol-forming substrate. Conveniently, the aerosol-forming substrate may be part of an aerosol-generating article or a smoking article.

[0206] The aerosol-forming substrate may be a solid aerosol-forming substrate. The aerosol-forming substrate may contain both solid and liquid components. The aerosol-forming substrate may contain tobacco-containing materials that include volatile tobacco-flavoring compounds released from the substrate upon heating. The aerosol-forming substrate may contain nicotine. The aerosol-forming substrate may contain non-tobacco materials. The aerosol-forming substrate may contain an aerosol-forming agent that facilitates the formation of a high-density and stable aerosol. Examples of suitable aerosol-forming agents include glycerin and propylene glycol. The aerosol-forming substrate may also be a liquid aerosol-forming substrate. The aerosol-forming substrate may contain flavoring agents. The aerosol-forming substrate may contain plant components. The aerosol-forming substrate may contain cannabis for therapeutic purposes.

[0207] [Examples] The present invention is defined in the claims. However, a non-exclusive list of non-limiting embodiments is provided below. One or more features of these embodiments may be combined with one or more features of other embodiments, forms, or aspects described herein.

[0208] Example 1: A heating arrangement comprising: a first cavity configured to receive a first aerosol-forming substrate; a first airflow channel; and at least a first heating element, wherein the first heating element includes at least two or more first perforations, each of which extends along the direction of the first perforation, the direction of the first perforation is angled with respect to the longitudinal axis of the first heating element, the first heating element is disposed between the first cavity and the first airflow channel, the heating element is disposed in contact with the first cavity and the first airflow channel, and the first perforations are configured to fluidly connect the first cavity to the first airflow channel. Example 2: The aerosol generator according to Example 1, wherein the longitudinal axis of the first heating element is arranged parallel to the longitudinal axis of the aerosol generator. Example 3: An aerosol generator according to any one of Examples 1 to 2, wherein the first drilling direction is angled by 30° to 150° with respect to the long axis of the first heating element. Example 4: An aerosol generator according to any one of Examples 1 to 3, wherein the first heating element comprises at least two or more second perforations, the second perforations extending along the direction of the second perforations, the direction of the second perforations being angled with respect to the longitudinal axis of the first heating element, and the second perforations being configured to fluidly connect the first cavity to an airflow channel. Example 5: The aerosol generator according to Example 4, wherein the second drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the first heating element. Example 6: The aerosol generator according to either of Examples 4 and 5, wherein the first drilling direction is the same as the second drilling direction. Example 7: An aerosol generator according to either of Examples 4 and 5, wherein the first drilling direction is different from the second drilling direction. Example 8: An aerosol generator according to any one of Examples 4 to 7, wherein a second perforation is located proximal to the first perforation. Example 9: The aerosol generator according to Example 8, wherein the first drilling direction is angled 30° to 90° with respect to the long axis of the first heating element, and the second drilling direction is angled 90° to 150° with respect to the long axis of the first heating element. Example 10: An aerosol generator according to any one of Examples 1 to 9, wherein the heating arrangement comprises a second heating element, the second heating element comprising at least two or more third perforations, each of which extends along the third perforation direction, and the third perforation direction is angled with respect to the longitudinal axis of the second heating element. Example 11: The aerosol generator according to Example 10, wherein the longitudinal axis of the second heating element is arranged parallel to the longitudinal axis of the aerosol generator. Example 12: The aerosol generator according to either of Examples 10 or 11, wherein the third drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the second heating element. Example 13: The aerosol generator according to any one of Examples 10 to 12, wherein the second heating element comprises at least two or more fourth perforations, each of which extends along the direction of the fourth perforation, and the direction of the fourth perforation is angled with respect to the longitudinal axis of the second heating element. Example 14: The aerosol generator according to Example 13, wherein the fourth drilling direction is angled by 30° to 150° with respect to the long axis of the second heating element. Example 15: The aerosol generator according to either of Examples 13 and 14, wherein the third drilling direction is the same as the fourth drilling direction. Example 16: The aerosol generator according to either of Examples 13 and 14, wherein the third drilling direction is different from the fourth drilling direction. Example 17: An aerosol generator according to any one of Examples 13 to 16, wherein a fourth perforation is located proximal to the third perforation. Example 18: An aerosol generator according to any of Examples 13 to 17, wherein the third drilling direction is angled 30° to 90° with respect to the long axis of the second heating element, and the fourth drilling direction is angled 90° to 150° with respect to the long axis of the second heating element. Example 19: An aerosol generator according to any one of Examples 13 to 18, wherein the device comprises a second airflow channel, a second heating element disposed between the first cavity and the second airflow channel, the second heating element disposed in contact with the first cavity and the second airflow channel, and one or both of the third and fourth perforations are configured to fluidly connect the first cavity to the second airflow channel. Example 20: An aerosol generator according to any one of Examples 13 to 18, comprising a second cavity configured to receive a second aerosol-forming substrate, a second heating element disposed between the second cavity and a first airflow channel, a second heating element disposed in contact with the second cavity and the first airflow channel, and one or both of a third and a fourth perforation configured to fluidly connect the second cavity to the first airflow channel. Example 21: An aerosol generator according to any one of Examples 13 to 18, wherein the device comprises a second cavity configured to receive a second aerosol-forming substrate, the device comprises a second airflow channel, a second heating element disposed between the second cavity and the second airflow channel, the second heating element disposed in contact with the second cavity and the second airflow channel, and one or both of the third and fourth perforations are configured to fluidly connect the second cavity to the second airflow channel. Example 22: An aerosol generator according to any one of Examples 1 to 21, wherein one or both of the first and second heating elements are resistance heating elements. Example 23: An aerosol generator according to any one of Examples 1 to 21, wherein the heating arrangement comprises a first planar induction coil, and the first planar induction coil is configured to contact a first cavity. Example 24: An aerosol generator according to any one of Examples 1 to 18, 20, 21, and 23, wherein the heating arrangement comprises a second planar induction coil, and the second planar induction coil is configured to contact a second cavity. Example 25: An aerosol generator according to any of Examples 1 to 24, wherein one or both of the first and second heating elements are planar. Example 26: An aerosol generator according to any of Examples 1 to 25, wherein one or both of the first and second heating elements are produced by electrodeposition. Example 27: An aerosol generator according to any of Examples 1 to 26, wherein one or both of the first and second heating elements are metal foils. Example 28: An aerosol generator according to any of Examples 1 to 27, wherein the proximal ends of one or both of the first and second heating elements are rounded. Example 29: An aerosol generator according to any of Examples 1 to 28, wherein one or more of the first, second, third, and fourth perforations include a rounded edge. Example 30: An aerosol generator according to any one of Examples 1 to 29, wherein the device comprises an air intake, and the device comprises one or more of the following: a first cavity inlet for fluid connection between the air intake and a first cavity, a second cavity inlet for fluid connection between the air intake and a second cavity, a first airflow channel inlet for fluid connection between the air intake and a first airflow channel, and a second airflow channel inlet for fluid connection between the air intake and a second airflow channel. Example 31: An aerosol generating system comprising an aerosol generating device described in any of Examples 1 to 30, and a first aerosol generating substrate, preferably a first planar aerosol generating substrate. Example 32: The aerosol generating system according to Example 31, wherein the first aerosol generating substrate is porous. Example 33: An aerosol generating system according to any one of Examples 31 and 32, comprising the apparatus according to any one of Examples 20 to 30, wherein the system comprises a second aerosol generating substrate, preferably a second planar aerosol generating substrate. Example 34: The aerosol generating system according to Example 33, wherein the second aerosol generating substrate is porous. Example 35: The aerosol generating system according to either of Examples 33 and 34, wherein the first aerosol-forming substrate is configured differently from the second aerosol-forming substrate. Example 36: An aerosol generating system according to either of Examples 33 and 34, wherein the first aerosol-forming substrate is configured to be the same as the second aerosol-forming substrate. Example 37: An aerosol generating system according to any one of Examples 33 to 36, wherein a first aerosol-forming substrate is shaped to closely conform to the shape of a first cavity, and a second aerosol-forming substrate is shaped to closely conform to the shape of a second cavity. Example 38: An aerosol generating system according to any one of Examples 33 to 37, wherein a first aerosol-forming substrate forms a part of a first aerosol-generating article, preferably a first planar aerosol-generating article, and a second aerosol-forming substrate forms a part of a second aerosol-generating article, preferably a second planar aerosol-generating article, and preferably the first aerosol-generating article is shaped to closely conform to the shape of a first cavity, and the second aerosol-generating article is shaped to closely conform to the shape of a second cavity. Example 39: A heating element produced by electrodeposition, wherein the heating element comprises at least two or more first perforations, each of which extends along the first perforation direction, and the first perforation direction is angled with respect to the longitudinal axis of the heating element. Example 40: A method for manufacturing a heating element having at least two or more perforations, (a) A step of providing a master negative, (b) The step of applying an electrical insulating material to the master negative at the intended location of the perforation, (c) A method comprising the step of electrodepositing a master negative with a metal coating.

[0209] A non-exclusive list of non-limiting embodiments is provided below. One or more features of these embodiments may be combined with one or more features of other embodiments, forms, or aspects described herein.

[0210] Features described in relation to one embodiment may be equally applicable to other embodiments of the present invention.

[0211] The present invention will be further explained with reference to the following attached drawings, which are for illustrative purposes only.

[0212] Figure 1 shows a simplified diagram of the aerosol generation system 100. The system 100 includes an aerosol generator 102. The generator 102 includes a main body 104. The generator 102 includes a first cavity 106. The generator 102 includes a second cavity 108. The generator 102 includes a first airflow channel 110. The generator 102 includes a mouthpiece 112. The generator 102 includes an air intake 114.

[0213] The first cavity 106 is in contact with the first airflow channel 110. The second cavity 108 is in contact with the first airflow channel 110. The first airflow channel 110 is sandwiched between the first cavity 106 and the second cavity 108.

[0214] System 100 includes a first aerosol generating article 116 having a first aerosol-forming substrate. System 100 also includes a second aerosol generating article 118 having a second aerosol-forming substrate. The first aerosol generating article 116 may be different from the second aerosol generating article 118. For example, the first aerosol generating article 116 may have a different aerosol-forming substrate than the second aerosol generating article 118. The first aerosol generating article 116 may be inserted into the first cavity 106 as indicated by the arrow. The second aerosol generating article 118 may be inserted into the second cavity 108 as indicated by the arrow.

[0215] The mouthpiece 112 is a hinged mouthpiece. The mouthpiece 112 may be moved between a first position and a second position. Figure 1 shows the first position of the mouthpiece 112, which is positioned to allow the aerosol generating article to be inserted into the device 102. When one or both of the first aerosol generating article 116 and the second aerosol generating article 118 are inserted into the device 102, the mouthpiece 112 may be moved to a second position in which the mouthpiece 112 engages with the downstream end of the aerosol generating device 102.

[0216] In the second position, the mouthpiece 112 abuts against the downstream end of the main body 104 of the device 102. In the second position, the mouthpiece 112 is fluidly connected to the first cavity 106, the second cavity 108, and the first airflow channel 110.

[0217] The device 102 includes a perforated first heating element (not shown). The device 102 also includes a perforated second heating element (not shown).

[0218] During use, the user may inhale through the mouthpiece 112 to draw air into the air intake 114. The drawn air may be distributed between the first cavity 106, the second cavity 108, and the first airflow channel 110. The airflow through the first cavity 106 may partially enter the first aerosol generating article 116. The airflow through the second cavity 108 may partially enter the second aerosol generating article 118. The first heating element may heat the inserted first aerosol forming substrate. The first heating element may at least partially volatilize the first aerosol forming substrate. Additionally, or by other means, the second heating element may heat the inserted second aerosol forming substrate. The second heating element may at least partially volatilize the inserted second aerosol forming substrate.

[0219] The volatile first aerosol-forming substrate may flow into the first airflow channel 110 via a perforated first heating element. The volatile first aerosol-forming substrate may flow directly into the mouthpiece 112. The volatile second aerosol-forming substrate may flow into the first airflow channel 110 via a perforated second heating element. The volatile second aerosol-forming substrate may flow directly into the mouthpiece 112. The volatile first aerosol-forming substrate and the volatile second aerosol-forming substrate are mixed in the first airflow channel 110 with air drawn directly into the first airflow channel 110 through the air intake 114. This mixture may flow from the airflow channel 110 into the mouthpiece 112. The aerosol can be inhaled through the mouthpiece 112.

[0220] Figure 2 is a diagram showing the arrangement of the components of the present invention in a shifted manner. The components form a stack that may be included in the intermediate section of the device 102 or in the main body 104. The stack, from top to bottom, comprises a first planar induction coil 120, a first planar cavity 106, a first planar perforated induction heating element 122, a first planar airflow channel 110, a second planar perforated induction heating element 124, a second planar cavity 108, and a second planar induction coil 126.

[0221] The first cavity 106 has an open end 128. The airflow channel 110 has an open end 130. The second cavity 108 has an open end 132. The first cavity 106 may be fluidly connected to the mouthpiece 112 via the open end 128 of the first cavity 106. The second cavity 108 is fluidly connected to the mouthpiece 112 via the open end 132 of the second cavity 108. The airflow channel 110 may be fluidly connected to the mouthpiece 112 via the open end 130 of the airflow channel 110.

[0222] Figure 3 shows a modular aerosol generator 102. The device 102 comprises a main body 104. The device 102 comprises a mouthpiece 112. The device 102 comprises an intermediate section 134.

[0223] The main unit 104 includes a controller 136. The main unit 104 includes a power supply 138. The controller 136 may be configured to supply power from the power supply 138 to the intermediate section 134. The main unit 104 includes a housing 140. The main unit 104 includes an interface 142, which may be a data port or interface for connecting an external energy source to the rechargeable power supply 138.

[0224] The mouthpiece 112 includes a housing 144. The mouthpiece 112 includes a chamber 146. The mouthpiece 112 includes an aerosol outlet 148.

[0225] The device 102 is shown to be disassembled. The main body 104 may be detachably connected to the upstream end of the intermediate section 134, as indicated by arrow 150. The intermediate section 134 may be detachably connected to the upstream end of the mouthpiece 112, as indicated by arrow 152. Details of the intermediate section 134 are shown in Figure 4.

[0226] Figure 4 shows details of the intermediate section 134 of Figure 3. The intermediate section 134 comprises a first planar heating coil 120. The intermediate section 134 comprises a second planar heating coil 126. The intermediate section 134 comprises a first planar cavity 106. The intermediate section 134 comprises a second planar cavity 108. The intermediate section 134 comprises a first planar heating element 122. The first planar heating element 122 is an induction heating element. The intermediate section 134 comprises a second planar heating element 124. The second planar heating element 124 is an induction heating element. The intermediate section comprises an airflow channel 110.

[0227] The first heating element 122 is provided with first perforations 154. The first perforations 154 are angled at an angle of 90° to 150° with respect to the longitudinal axis of the first heating element 122. All first perforations 154 extend in the same first perforation direction.

[0228] The first drilling direction of the first hole 154 is partially oriented toward the downstream end of the airflow channel 110. The first hole 154 is angled at an oblique angle.

[0229] The second heating element 124 is provided with third perforations 156. The third perforations 156 are angled at an angle of 90° to 150° with respect to the longitudinal axis of the second heating element 124. All third perforations 156 extend in the same direction.

[0230] The third drilling direction of the third hole 156 is partially oriented toward the downstream end of the airflow channel 110. The third hole 156 is angled at an oblique angle.

[0231] The first cavity 106 has an open end 128. The second cavity 108 has an open end 132. The first airflow channel 110 has an open end 130.

[0232] The intermediate section 134 includes an air intake 114. The intermediate section 134 includes a first cavity inlet 160. The intermediate section 134 includes a second cavity inlet 162. The intermediate section 134 includes an airflow channel inlet 164. The intermediate section 134 includes a housing 166. The air intake 114 may be located inside the housing 166.

[0233] During use, the first aerosol generating article 116, which includes a first aerosol-forming substrate, may be inserted into the first cavity 106. Additionally, or by other means, a second aerosol generating article 118, which includes a second aerosol-forming substrate, may be inserted into the second cavity 108. The main body 104 may be connected to an intermediate section 134, which may be connected to a mouthpiece 112 to obtain an assembled aerosol generating system.

[0234] During use, the user may inhale through the aerosol outlet 148 of the mouthpiece 112 so that air enters the air intake 114. The airflow passing through the air intake 114 may be distributed between the first cavity inlet 160, the second cavity inlet 162, and the airflow channel inlet 164.

[0235] The airflow passing through the first cavity inlet 160 enters the first cavity 106. The airflow passing through the second cavity inlet 162 enters the second cavity 108. The airflow passing through the airflow channel inlet 164 enters the airflow channel 110.

[0236] A portion of the airflow passing through the cavity 106 enters the airflow channel 110 through the first perforation 154. When the first perforation 154 is angled between 90° and 150°, the airflow in the airflow channel 110 toward the downstream end of the device 102 is accelerated. A portion of the airflow passing through the first cavity 106 enters the mouthpiece 112 through the open end 128.

[0237] When the first perforation 154 is partially oriented toward the downstream end of the airflow channel 110, the airflow through the airflow channel 110 is accelerated toward the downstream end of the device 102. The airflow is improved. Aerosol delivery is improved.

[0238] A portion of the airflow passing through the second cavity 108 enters the first airflow channel 110 through the third perforation 156. When the third perforation 156 is angled between 90° and 150°, the airflow in the first airflow channel 110 toward the downstream end of the device 102 is accelerated. A portion of the airflow passing through the second cavity 108 enters the mouthpiece 112 through the open end 132.

[0239] When the third perforation 156 is partially oriented toward the downstream end of the airflow channel 110, the airflow through the airflow channel 110 toward the downstream end of the device 102 is accelerated. The airflow is improved. Aerosol delivery is improved.

[0240] The airflow passing through the first airflow channel 110 enters the mouthpiece 112 through the open end 130.

[0241] Figure 5 shows a part of the aerosol generating system 100 of the present invention. The system 100 comprises a device 102 (only a part of the device 102 is shown). The device 102 comprises a first planar heating element 122. The first planar heating element 122 is a resistance heating element. The device 102 comprises a second planar heating element 124. The second planar heating element 124 is a resistance heating element. The device 102 comprises a first aerosol generating article 116 comprising a first aerosol forming substrate. The first aerosol generating article 116 is inserted into a first cavity 106. The first cavity 106 is disposed between the first heating element 122 and the second heating element 124. The first heating element 122 is in contact with the first aerosol generating article 116. The second heating element 124 is in contact with the first aerosol generating article 116.

[0242] The device 102 includes a first airflow channel 110. The first heating element 122 is in contact with the first airflow channel 110. The device 102 also includes a second airflow channel 168. The second airflow channel 168 has an open end 170. The second heating element 124 is in contact with the second airflow channel 168.

[0243] The first heating element 122 is provided with first perforations 154. The first perforations 154 fluidly connect the first cavity 106 to the first airflow channel 110. The first perforations 154 are angled at an angle of 90° to 150° with respect to the longitudinal axis of the first heating element 122. All first perforations 154 extend in the same first perforation direction.

[0244] The first drilling direction of the first hole 154 is partially oriented toward the downstream end of the first airflow channel 110. The first hole 154 is angled diagonally.

[0245] The second heating element 124 is provided with third perforations 156. The third perforations 156 fluidly connect the first cavity 106 to the second airflow channel 168. The third perforations 156 are angled at an angle of 90° to 150° with respect to the longitudinal axis of the second heating element 124. All third perforations 156 extend in the same direction.

[0246] The third drilling direction of the third hole 156 is partially oriented toward the downstream end of the second airflow channel 168. The third hole 156 is angled at an oblique angle.

[0247] The first heating element 122 is positioned radially outward of the first cavity 106. The second heating element 124 is positioned radially outward of the first cavity 106. The first airflow channel 110 is positioned radially outward of the first heating element 122. The second airflow channel 168 is positioned radially outward of the second heating element 124.

[0248] During use, the consumer inhales the aerosol outlet 148 of the mouthpiece 112 so that air enters the device 102 through the air intake 114. The airflow is distributed through the airflow distribution channel 172, as indicated by the arrow 176, between the first airflow channel inlet 164, the second airflow channel inlet 174, and the first cavity inlet 160.

[0249] A portion of the airflow enters the first airflow channel 110 through the first airflow channel inlet 164. A portion of the airflow enters the second airflow channel 168 through the second airflow channel inlet 174. A portion of the airflow enters the first cavity 106 through the first cavity inlet 160.

[0250] The controller 136 may supply power to one or both of the first heating element 122 and the second heating element 124. One or both of the first heating element 122 and the second heating element 124 heat the aerosol-forming substrate of the inserted aerosol-generating article 116 to volatilize at least a portion of the aerosol-forming substrate. At least a portion of the airflow passing through the first cavity inlet 160 flows through at least a portion of the article 116 inserted into the cavity 106.

[0251] At least a portion of the volatile aerosol-forming substrate may flow into the first airflow channel 110 through the first perforation 154. The volatile aerosol-forming substrate may mix with the airflow passing through the first airflow channel 110. At least a portion of the volatile aerosol-forming substrate may flow into the second airflow channel 168 through the third perforation 156. The volatile aerosol-forming substrate may mix with the airflow passing through the second airflow channel 168. When the first perforation 154 is angled downstream, the airflow passing through the first airflow channel 110 toward the mouthpiece 112 is accelerated. When the third perforation 156 is angled downstream, the airflow passing through the second airflow channel 168 toward the mouthpiece 112 is accelerated.

[0252] The airflow containing the volatile substrate passes through the first airflow channel 110 and enters the chamber 146 of the mouthpiece 112 via the open end 130 of the first airflow channel 110. The airflow containing the volatile substrate passes through the second airflow channel 168 and enters the chamber 146 of the mouthpiece 112 via the open end 170 of the second airflow channel 168. A portion of the volatile substrate enters the chamber 146 of the mouthpiece 112 via the open end 128 of the first cavity 106.

[0253] The airflow from the first airflow channel 110, the first cavity, and the second airflow channel 168 mixes within the chamber 146. This mixing can improve aerosol quality. The mixing can improve aerosol homogeneity. Consumers may inhale the aerosol through the aerosol outlet 148.

[0254] Figure 6 shows an embodiment of the aerosol generation system 100 of the present invention using induction heating.

[0255] System 100 includes a device 102. Device 102 includes a first planar airflow channel 110. Device 102 includes a first planar heating element 122. System 100 includes a first planar aerosol generator 116 comprising a first aerosol forming substrate inserted into a first cavity 106. Device 102 includes a first planar induction coil 120. The induction heating arrangement includes the first heating element 122 and the first induction coil 120. The induction heating coil 120 includes a shield 178. The first heating element 122 is an induction heating element.

[0256] The first heating element 122 is in thermal contact with the first aerosol generating article 116. The first aerosol generating article 116 is positioned between the first heating element 122 and the first induction coil 120. The first heating element 122 backs the first airflow channel 110.

[0257] The first heating element 122 is provided with a first perforation 154. The first perforation 154 is angled toward the downstream end of the device 102. The first perforation 154 fluidly connects the first aerosol generating article 116 to the first airflow channel 110.

[0258] During use, the user may inhale through the aerosol outlet 148 and draw air through the air intake 114. The airflow is distributed between the first airflow channel inlet 164 and the first cavity inlet 160.

[0259] The first induction coil 120 may generate an alternating magnetic field that penetrates the first heating element 122. The first induction coil 120 may heat the first heating element 122. The first heating element 122 is in thermal contact with the first aerosol generating article 116. The first heating element 122 heats the first aerosol forming substrate to volatilize at least a portion of the first aerosol forming substrate.

[0260] At least a portion of the volatile first aerosol-forming substrate flows radially outward into the first airflow channel 110 through the first perforation 154. The flow of the volatile first aerosol-forming substrate mixes with the airflow entering the first airflow channel 110 through the first airflow channel inlet 164.

[0261] At least a portion of the volatile first aerosol-forming substrate may flow from the first aerosol-generating article 116 into the chamber 146 of the mouthpiece 112 through the first cavity open end 128. The mixture of the volatile first aerosol-forming substrate entering the first airflow channel 110 through the first perforation 154 and the airflow entering the first airflow channel 110 through the first airflow channel inlet 164 flows into the chamber 146 through the first airflow channel open end 130.

[0262] The volatilized first aerosol-forming substrate that enters the chamber 148 directly through the first cavity open end 128 and the mixed air stream that enters the chamber 148 through the first air flow channel open end 130 are mixed within the chamber. Such a mixture can have improved homogeneity. Such a mixture may be cooled within the chamber 146 to form an aerosol. A consumer may inhale the aerosol through the aerosol outlet 148.

[0263] Figure 7 shows the aerosol generation system 100 of the present invention using inductive heating arrangements. The system 100 includes the modular device 102 shown in FIGS. 3 and 4 in an assembled state. The system 100 of FIG. 7 includes an inserted first aerosol-generating article 116 and an inserted second aerosol-generating article 118. The first aerosol-generating article 116 includes a first aerosol-forming substrate. The second aerosol-generating article 118 includes a second aerosol-forming substrate.

[0264] The first heating element 122 is in close contact with the first aerosol-generating article 116. The second heating element 124 is in close contact with the second aerosol-generating article 118. The first induction coil 120 may generate an alternating magnetic field passing through the first heating element 122. The first induction coil 120 may heat the first heating element 122. The second induction coil 126 may generate an alternating magnetic field passing through the second heating element 124. The second induction coil 126 may heat the second heating element 124. The first heating element 122 may heat the first aerosol-forming substrate to volatilize at least a portion of the first aerosol-forming substrate. The second heating element 124 may heat the second aerosol-forming substrate to volatilize at least a portion of the second forming substrate.

[0265] The first induction coil 120 may operate independently of the second induction coil 126. The first induction coil 120 may be provided with a first heating profile. The second induction coil 126 may be provided with a second heating profile. The first heating profile and the second heating profile may be different. The first heating profile may be adapted to the characteristics of the first aerosol generating article 116. The second heating profile may be adapted to the characteristics of the second aerosol generating article 118.

[0266] At least a portion of the volatilized first aerosol-forming substrate may flow into the first airflow channel 110 through the first perforation 154. At least a portion of the volatilized second aerosol-forming substrate may flow into the first airflow channel 110 through the third perforation 156. The volatilized first aerosol-forming substrate, the volatilized second aerosol-forming substrate, and the airflow entering the first airflow channel 110 through the first airflow channel inlet 164 mix within the first airflow channel 110. This mixture may flow from the first airflow channel 110 into the chamber 146 through the first airflow channel open end 130.

[0267] At least a portion of the volatile first aerosol-forming substrate may flow into the chamber 146 of the mouthpiece 112 through the first cavity open end 128. At least a portion of the volatile second aerosol-forming substrate may flow into the chamber 146 through the second cavity open end 132.

[0268] The airflow from the first cavity 106 through the first cavity open end 128, the airflow from the second cavity 108 through the second cavity open end 132, and the airflow channel 110 through the first airflow channel open end 130 are mixed in the chamber 146. The mixture may be cooled in the chamber 146 to produce an aerosol. The user may inhale the aerosol through the aerosol outlet 148.

[0269] System 100 allows for the adjustment of the delivered aerosol. For example, the first aerosol-forming substrate may have a first specific characteristic, such as a first flavoring agent or a first nicotine content, and the second aerosol-forming substrate may have a second specific characteristic, such as a second flavor or a second nicotine content. The power supplied to the first induction coil 120 may be varied to produce varying amounts of volatile first aerosol-forming substrate. The power supplied to the second induction coil 126 may be varied to produce varying amounts of volatile second aerosol-forming substrate.

[0270] For example, if the user desires to have an aerosol that reflects the properties of only the first aerosol-forming substrate, power may be supplied only to the first induction coil 120 so that only the first aerosol-forming substrate volatilizes. If the user desires to have an aerosol that reflects the properties of only the second aerosol-forming substrate, power may be supplied only to the second induction coil 126 so that only the second aerosol-forming substrate volatilizes. If the user desires to have a blend of the properties of the first aerosol-forming substrate and the second aerosol-forming substrate in a specific ratio, power may be supplied to both the first coil 120 and the second coil 126 so that the desired ratio is achieved.

[0271] Figure 8 shows an enlarged view of the aerosol generating system 100. The above descriptions relating to Figures 5 and 6 apply in particular. However, the first heating element 122 comprises a first perforation 154 and a second perforation 180. The first perforation 154 extends in the first perforation direction 182. The second perforation 180 extends in the second perforation direction 184. The first perforation direction 182 is different from the second perforation direction 184. The first perforation 154 and the second perforation 180 are scattered.

[0272] The first drilling direction 182 is angled 188 degrees between 90° and 150° with respect to the long axis 186 of the first heating element 122. The second drilling direction 184 is angled 190 degrees between 30° and 90° with respect to the long axis 186 of the first heating element 122. The airflow through the airflow channel 110 is indicated by arrow 192.

[0273] The first drilling direction 182 is at least partially oriented in the direction of the airflow 192 passing through the airflow channel 110. The second drilling direction 184 is at least partially oriented in the direction opposite to the airflow 192 passing through the airflow channel 110.

[0274] When the first perforation direction 182 is at least partially oriented in the direction of the airflow 192 passing through the airflow channel 110, the airflow toward the mouthpiece 112 is accelerated. Because the second perforation direction 184 is at least partially oriented in the opposite direction to the airflow 192, the airflow passing through the second perforation 180 causes turbulence in the airflow channel 110.

[0275] The first perforation 154 and the second perforation 180 have rounded edges 194.

[0276] Figure 9 shows an aerosol-generating article 116 and a heating element 122 having a rounded edge 194 and a rounded downstream end 196. Figure 9 illustrates the insertion of the aerosol-generating article 116 into the cavity, as indicated by the arrows. Once the aerosol-generating article 116 is inserted into the cavity, it slides through the heating element 122. The rounded edge 194 reduces the risk of damage to the article 116 during insertion and improves the smoothness of the insertion process. The rounded downstream end 196 allows the article 116 to be inserted into the cavity more easily.

Claims

1. Aerosol generator, A first cavity configured to receive a first aerosol-forming substrate, Air intake and A first cavity inlet configured to fluidly connect the air intake port and the first cavity, The first airflow channel, A first airflow channel inlet is configured to fluidly connect the air intake port and the first airflow channel, A heating arrangement comprising at least a first heating element, wherein the first heating element includes two or more first perforations, each of the two or more first perforations extending along a first perforation direction, the first perforation direction being angled with respect to the longitudinal axis of the first heating element, the first heating element being disposed between the first cavity and the first airflow channel, the heating element being disposed in contact with the first cavity and the first airflow channel, and the two or more first perforations being configured to fluidly connect the first cavity to the first airflow channel.

2. The aerosol generating apparatus according to claim 1, wherein the first drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the first heating element.

3. The aerosol generator according to any one of claims 1 to 2, wherein the first heating element comprises two or more second perforations, the two or more second perforations extending along the second perforation direction, the second perforation direction being angled with respect to the longitudinal axis of the first heating element, and the two or more second perforations being configured to fluidly connect the first cavity to the first airflow channel.

4. The aerosol generating apparatus according to claim 3, wherein the second drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the first heating element.

5. The aerosol generating apparatus according to either claim 3 or 4, wherein the first drilling direction is different from the second drilling direction.

6. The aerosol generating apparatus according to any one of claims 3 to 5, wherein the first drilling direction is angled 30° to 90° with respect to the longitudinal axis of the first heating element, and the second drilling direction is angled 90° to 150° with respect to the longitudinal axis of the first heating element.

7. The aerosol generating apparatus according to any one of claims 1 to 6, wherein the heating arrangement comprises a second heating element, the second heating element comprises two or more third perforations, each of the two or more third perforations extends along the third perforation direction, and the third perforation direction is angled with respect to the longitudinal axis of the second heating element.

8. The aerosol generating device according to claim 7, wherein the third drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the second heating element.

9. The aerosol generator according to any one of claims 7 and 8, wherein the second heating element comprises two or more fourth perforations, each of the two or more fourth perforations extending along the direction of the fourth perforation, and the direction of the fourth perforation being angled with respect to the longitudinal axis of the second heating element.

10. The aerosol generating apparatus according to claim 9, wherein the fourth drilling direction is angled by 30° to 150° with respect to the longitudinal axis of the second heating element.

11. The aerosol generating apparatus according to either claim 9 or 10, wherein the third drilling direction is angled 30° to 90° with respect to the longitudinal axis of the second heating element, and the fourth drilling direction is angled 90° to 150° with respect to the longitudinal axis of the second heating element.

12. The aerosol generating apparatus according to any one of claims 9 to 11, wherein the apparatus comprises a second cavity configured to receive a second aerosol forming substrate, the second heating element disposed between the second cavity and the first airflow channel, the second heating element disposed in contact with the second cavity and the first airflow channel, and one or both of the two or more third perforations and the two or more fourth perforations are configured to fluidly connect the second cavity to the first airflow channel.

13. An aerosol generating system comprising an aerosol generating device according to any one of claims 1 to 12, and a first aerosol forming substrate, preferably a first planar aerosol forming substrate.

14. The aerosol generating system according to claim 13, comprising the apparatus according to claim 12, wherein the system comprises a second aerosol-forming substrate, preferably a second planar aerosol-forming substrate.

15. The aerosol generating system according to claim 14, wherein the first aerosol-forming substrate forms a part of the first aerosol-generating article, preferably the first planar aerosol-generating article, the second aerosol-forming substrate forms a part of the second aerosol-generating article, preferably the second planar aerosol-generating article, preferably the first aerosol-generating article is shaped to closely conform to the shape of the first cavity, and the second aerosol-generating article is shaped to closely conform to the shape of the second cavity.

Images